Dissertations / Theses: '5250d'

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Johansson, Linus. "Konstruktion av Lastarstativ Lundberg 5250." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-86559.

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Wade, Matthew. "Investigating the origins of macroscopic variation in differential ethnic hair types." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/52502/.

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In the modern world hair plays a cultural and aesthetic role. The hair care industry accounts for a large portion of the cosmetic and dermatological industry generating large financial sums in sales, and consequently research and development into hair care products is important for companies seeking to increase their market share and profits. Currently there are very few products which specifically target certain ethnicities as the basis of knowledge underlying what nanoscopic and molecular factors cause the variation seen at the macroscale of human hair is circumscribed. Therefore a need exists within this industry to expand the information available on the origins of macroscopic variation in differential ethnic hair types. The work presented in this thesis is the embodiment of five different studies: a bulk X-ray scattering analysis of single hair fibres, a series of skin-core experiments utilising microfocus X-ray scattering, an attenuated total reflectance Fourier transform infrared spectroscopy study of the cuticle surface and a study of the lipids extracted from different spatial locations within hair fibres. The bulk X-ray scattering analysis on single hair fibres showed that the non-keratinous materials; namely the lipids and the amorphous/disordered material and interfaces present are responsible for the largest source of variation seen inter-ethnically at the nanoscopic and supramolecular levels. The lipids were found to be different amongst hair types with respect to their crystalline spacing, the total intensity and thus volume present and also in the preferential structural orientation of the lipid arrangement. The low angle diffuse scatter which is thought to be related to the keratin associated proteins varied with respect to the extent in q range, the angular behaviour and the behaviour of the diffuse scatter under hydration conditions. The azimuthal spread of the reflection arising from the inter-lateral packing of the keratin intermediate filaments was also found to differ between hair types. The skin-core experiments provide information on the textural variation of the hair fibre across the concentric subsections of hair enabling information to be sought on the structural components of the hair. The work presented shows that there are zonal differences in both the keratinous and non-keratinous structures present across the cross-section of the hair fibres both intra and inter-ethnically. The differences seen are in the size and location of specific hierarchical keratinous assembly structures and also in the ultra -structure of the hair fibre as whole. Attenuated total reflectance Fourier transform infrared spectroscopy is a bench top technique that is widely available to investigate the surface structure of materials. The study presented has shown differences related to the keratin conformational structure and the hydrophilic properties of the hair fibres. There are also variations seen in the products of the cysteine containing structures due to weathering which may be due to a difference in the geographical location of the source. Lipids that are present on either the surface of hair fibres or located within the hair fibre account for the largest non-proteinaceous component present in hair. An investigation characterising the lipids preferentially extracted from different spatial locations of the hair fibre has been performed. The work presented has revealed that there is significant variation both intra and inter-ethnically in the total lipid content present, the lipid classes and the fatty acid profiles. The variation in the fatty acid profiles may also possibly be related to the difference in signal seen in the X-ray diffraction study.

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Touchais, Emmanuelle. "Étude et développement d'une source de plasma micro-onde pour déposer des revetements par pulvérisation sur des grandes surfaces." Grenoble INPG, 1996. http://www.theses.fr/1996INPG0106.

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Les caracteristiques d'une nouvelle source de plasma pour le depot de revetements par pulverisation sur des grandes surfaces ont ete etudiees. Cette source utilise une onde electromagnetique de frequence 2. 45 ghz pour accelerer les electrons qui ionisent les atomes d'argon par impact electronique. Un champ magnetique permet de confiner les electrons pour d'une part optimiser le couplage avec l'onde en tout lieu ou il est egal a 875 gauss et d'autre part transporter le plasma vers une cible de pulverisation polarisee negativement. Une source produisant une nappe de plasma de section rectangulaire de 75 cm2 a ete realisee. La caracterisation du plasma a ete effectuee en termes de densite electronique par interforemetrie, de temperature electronique par mesure de sonde et de courant d'ions recueillis sur la cible en fonction des parametres puissance micro-onde, pression d'argon, champ magnetique. Les valeurs obtenues ont montre que ce plasma est dense, avec une independance entre les parametres de creation du plasma et ceux de la pulverisation. L'usure des cibles de pulverisation est uniforme et correspond a l'intersection entre les lignes de champ magnetique et la surface de la cible. L'etude des couches de chrome deposees par ce procede a montre que la diminution de la pression permet d'obtenir des couches de densite proche de celle du chrome massique, avec des vitesses de depot elevees, et des contraintes residuelles faibles. Sous pression reduite constante, l'incorporation de carbone dans les couches de chrome par pulverisation reactive a permis d'augmenter la durete de ces couches. La morphologie devient plus dense, avec des contraintes residuelles faibles et une resistivite electrique faible. D'autres revetements (fer, oxyde de chrome, oxyde d'aluminium) ont ete realises pour demontrer la potentialite de ce nouveau dispositif a deposer en tension de polarisation negative continue de la cible des materiaux magnetiques et des oxydes

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Alharbi, Mohammed Abdullah N. "Saudi Arabia and Communism during the Cold War : King Faisal's foreign policy towards the Soviet Union, 1962-1975." Thesis, Durham University, 2017. http://etheses.dur.ac.uk/5250/.

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This thesis examines "Saudi Arabian foreign policy towards Communism during the Cold War: King Faisal's foreign policy with the Soviet Union, 1962-1975." The goal of this project is to further our understanding of Saudi diplomacy towards Soviet communism during the Cold War. Drawing on a broad range of archival and published sources in Arabic and English, such as government papers, books and articles, this study investigates different attitudes and polices that shaped Saudi Arabian policy in containing Communism around its zenith in the Middle East in the 1960s and 1970s. Focusing on built strategies of fighting Communism; the policy process was also framed as a struggle against secular nationalism movements and hence Islamic diplomacy became a fundamental motivation for action. These were key features of Saudi policy during the Cold War and were utilised in an effort to mobilize domestic actors in Saudi Arabia. My thesis thus pays special attention to key characteristic of "encirclement syndrome" that enables a systematic assessment of this study. The thesis's main argument is that Saudi Arabia in the 1960s and 1970s fought Communism on all fronts as the results of wider political and religious factors, rather than the actions of an individual ruler or country.

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Serio, Ulises Daniel. "Energía solar." Bachelor's thesis, Universidad Nacional de Cuyo. Facultad de Ciencias Económicas, 2012. http://bdigital.uncu.edu.ar/5250.

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La energía solar posee un enorme potencial, por ejemplo, si un 10% del desierto de Sahara fuera instalado con paneles solares (suponiendo una efectividad de captación de radiación del 10%), produciría una cantidad de energía eléctrica equivalente al doble del consumo eléctrico mundial. De este modo no existe un problema de recursos o fuentes de energía, sino un problema de costos (actualmente, la energía solar es 10 veces más cara de producir que la provista por una central térmica tradicional) y las demás formas limpias de generar electricidad (hidroeléctrica, geotérmica, mareomotriz, eólica, etc.) no poseen la capacidad técnica de alimentar al planeta dado los recursos limitados de las mismas (Lackner y Sachs 2005). En Argentina el uso de este tipo de tecnología es todavía muy limitado. No obstante ha aumentado recientemente la popularidad del uso de la energía solar (y calefones solares) en la región de Cuyo haciendo verdaderamente importante un estudio sobre si esta tendencia es correcta y conviene a la sociedad o si sus recursos serían mejor invertidos en otras tecnologías o gastos (incluso dentro del ámbito energético). Un aspecto que resulta importante evaluar es la conveniencia de la implementación de estas tecnologías desde el punto de vista económico-privado ya que de esta manera se pueden direccionar acciones de políticas tendientes a incentivar el uso de las mismas.
Fil: Serio, Ulises Daniel. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas.

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Bam, June Catherine. "The current relevance of populist history in schools : the attitudes of Cape Town youth to history." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52503.

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Thesis (DPhil)--Stellenbosch University, 2001.
ENGLISH ABSTRACT: This thesis exanunes whether the historical consciousness of grade 10 youth would increase should there be an intervention facilitated for this purpose, that is that they would show a heightened consciousness of the relation between school history and current affairs, politics and other societal issues. This intervention comprises the My New World text produced within the populist historiographical tradition in South Africa. The notion of historical consciousness is defined as the complex relation between an interpretation of the past, a perspective of the present and expectations of the future ROsen (1989; 1994). The investigation comprised a theoretical and empirical component. The theoretical component is informed by the theories of epistemology, knowledge, schooling and curriculum. The empirical component is based on the Youth and History Survey conducted on historical consciousness amongst youth in Europe in the early 1990s. Both this study and the European study were conducted during periods of political transition. The chosen research methodology was that of triangulation, combining quantitative with qualitative methods. The quantitative component was based on the measurement used in the European study, and comprised an experimental pre-test and post-test research design, measuring "inside school" and "outside school" historical consciousness. The study was conducted in 8 grade 10 classrooms at 8 schools in Cape Town, representative of class, race, language and gender. The teachers acted as facilitators of the intervention. The conclusion reached in the research is that although the intervention resulted in an increased enthusiasm amongst individuals for school history and interest in political issues and an understanding for the present as in evidence from the qualitative data, this was not reflected in the quantitative data which showed no significant increase in the "inside school" nor "outside school" historical consciousness amongst youth of average 15 years in grade 10 history classrooms in Cape Town. It can therefore not be empirically concluded that when youth are exposed to populist history over a limited period that they would show an increased "outside school" or "inside school" historical consciousness even though an intervention might aim to increase such a consciousness. A significant finding is that the case for an already existent historical consciousness related to the variables of class and gender holds. Instead of increasing the levels of historical consciousness, the intervention resulted in a surfacing of long-held attitudes, perceptions and beliefs of people, society, the past, the present and the future. The intervention succeeded in bringing these complex layers of variables and related factors that impact on perceptions and attitudes to the surface. Given this complexity, it was also concluded that an empirical study of historical consciousness amongst youth through an intervention over a limited period of time is risky, if not of little value.
AFRIKAANSE OPSOMMING: Hierdie tesis ondersoek die vraag of die historiese bewussyn van graad 10-leerders sal toeneem indien daar vir hierdie doe I 'n intervensie sou plaasvind, met ander woorde of hulle 'n verhoogde bewussyn van die verhouding tussen die yak Geskiedenis op skool en sake van die dag, die politiek en ander gemeenskapsake sal aantoon. Die tersaaklike intervensie behels die teks van My New World wat daargestel is binne die raamwerk van die populistiese historiografiese tradisie in Suid-Afrika. Die begrip 'historiese bewussyn' kan omskryf word as 'n komplekse verhouding tussen die interpretasie van die verlede, 'n perspektief oor die hede, en verwagtinge oor die toekoms (Rusen 1989; 1994). Die ondersoek bevat 'n teoretiese sowel as 'n empiriese komponent. Die teoretiese komponent is gebaseer op epistemologiese, onderwys- en kurrikulumteoriee. Die empiriese komponent vind sy grondslag in die Youth and History Survey ondersoek oor historiese bewussyn wat in die vroee 1990' s onder Europese jongmense geloods is. Beide hierdie studie en die Europese navorsing is in tye van politieke oorgang onderneem. Die navorsingsmetode wat gebruik is, is die van triangulasie wat uit 'n kombinasie van kwantitatiewe en kwalitatiewe metodes bestaan. Die kwantitatiewe komponent lS gebaseer op die meting wat in die Europese studie gebruik is, en bestaan uit 'n eksperimentele voor- en natoets navorsingsontwerp wat die historiese bewussyn "binne" en "buite" skoolverband meet. Die studie is geloods in agt graad 10-klaskamers by agt skole in Kaapstad wat klas, ras, taal en geslag verteenwoordig het. Die betrokke onderwysers het as fasiliteerders vir die intervensie opgetree. Die gevolgtrekking waartoe in die ondersoek geraak is, is dat, alhoewel die intervensie tot verhoogde entoesiasme vir Geskiedenis as skoolvak en tot belangstelling in politieke kwessies en 'n begrip van die hede onder individuele leerders gelei het (soos afgelei kon word uit kwalitatiewe data), hierdie tendens nie weerspieel is deur die kwantitatiewe data nie: eersgenoemde het nie 'n beduidende verhoging in die historiese bewussyn "binne" of "buite" skoolverband onder leerders met 'n gemiddelde ouderdom van 15 jaar getoon nie. Daar kan dus nie empiries tot die gevolgtrekking geraak word dat wanneer leerders vir 'n beperkte tyd aan populistiese geskiedenis blootgestel word, hulle 'n verhoogde historiese bewussyn "binne" of "buite" skoolverband sal aantoon nie, selfs al sou so 'n intervensie dit weI ten doel he om so 'n bewussyn te verhoog. 'n Beduidende bevinding is dat daar 'n saak uitgemaak kan word vir 'n reeds bestaande historiese bewussyn wat in verband staan met die veranderlikes van klas en geslag. In plaas daarvan om die vlakke van historiese bewussyn te verhoog het die intervensie die gevolg gehad dat lank bestaande houdings, persepsies en oortuigings oor mense, die gemeenskap, die verlede, die he de en die toekoms, na die oppervlak beweeg het. Die intervensie het dus daarin geslaag om hierdie komplekse lae veranderlikes en verwante faktore wat persepsies en houdings beinvloed, na die oppervlak te bring. In die lig van die kompleksiteit hiervan, is daar ook tot die gevolgtrekking geraak dat 'n empiriese studie van historiese bewussyn onder jongmense oor 'n beperkte tyd deur middel van intervensie riskant is, indien nie van min waarde nie.

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Coosner, Carroll Diane. "The design and evaluation of a cognitive skills assessment checklist for educators." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52505.

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Thesis (MEd)--University of Stellenbosch, 2001.
ENGLISH ABSTRACT: Post-apartheid South Africa has seen a shift to process-centred, outcomesbased (OBE) education. Within this paradigm much has been written and recommended as regards assessment, specifically authentic assessment, which needs to be continuous. Within this transformatory model of teaching and assessment, it is vital for the educator to understand how the learner learns in order to assess him/her authentically. Because cognition has to do with how learners acquire, store and utilize information, the best way to assess cognitive ability is to assess those thought processes that are involved in arriving at the products of cognition directly. Being process-based and judging the learners' responsiveness to instruction, it becomes important for the educator to examine how a learner learns, before educators can hope to categorise and analyse the learners' ability to learn. The paucity of the data base search revealed that the design of such a cognitive checklist was imperative. The checklist had to be easily understood, practical and easily impiementabie. The researcher based the checklist on Feuerstein's (1980) model, which is underpinned by the concepts of structural cognitive modifiability (SCM) and the mediated learning experience (MLE). SCM is based on the assumption that human beings have the capacity to modify their cognitive functions and adapt to life's changing demands. They are thus open systems which are amenable to cognitive changes. Structural changes are pervasive and determine cognitive function in a broad series of mental activities. Feuerstein has suggested a list of deficient cognitive functions at the input, elaboration and output phases of the mental act. These serve as guidelines for observational and mediational efforts. The identification of the deficient cognitive function, the level of modifiability and the mediation required to change them are considered to be of vital importance to predicting future learning. This basic assumption shifts the responsibility for a person's modifiability from that individual to the mediator or educator. The basic parameters of the cognitive process are subsumed into the cognitive map. These include: content; operation; modality; phase (input, elaboration, output); level of complexity; level of abstraction and level of efficiency. The present researcher reframed all the basic components of the learning phases into easily accessible English and provided examples of sub-skills (150) necessary for the successful acquisition of learning at that phase of the learning process. The literature study was followed by a pilot-study. This was carried out in order to refine the checklist and make sure that it was, indeed, user-friendly, easily understood, impiementabie without training and that it yielded information which the educators found to be professionally beneficial and enriching. The results of the pilot-study were incorporated into The Checklist To Assess Cognitive Skills' (Chapter 4). The result of the research was unanimous as regards the above-mentioned goals. The educators all realised the necessity of linking assessment to instruction and understood how crucial it is that educators understand and appreciate how a learner learns and hence, develops.
AFRIKAANSE OPSOMMING: Na apartheid het Suid-Afrika 'n verskuiwing na prosesgesentreerde, uitkomsgebaseerde onderwys (UGO) beleef. Binne hierdie paradigma is baie geskryf en aanbevelings gemaak oor assessering, veraloor outentieke assessering wat deurlopend toegepas moet word. Binne hierdie transformatiewe model van onderrig en assessering is dit van besondere belang dat opvoedkundiges moet verstaan hoe die leerder leer ten einde hom of haar op 'n outentieke wyse te kan assesseer. Omdat kognisie te doen het met die verwerwing, prosessering, storing en aanwending van inligting, is die geskikste wyse om kognitiewe verweë te assesseer, om daardie denkprosesse te assesseer wat direk betrek word ten einde by die produkte van kognisie uit te kom. Aangesien dit proses gebaseerd is, en gaan om die beoordeling van leerders se responsiwiteit op onderrig, word dit belangrik vir die opvoedkundige om te ondersoek hoe 'n leerder leer, voordat die opvoedkundige met enige mate van sukses leerders se leervermoëns sal kan kategoriseer en analiseer. Die beperkte omvang van die databasis-soektog beklemtoon dat die ontwerp van 'n kognitiewe kontrolelys vir opvoedkundiges imperatief is. Die kontrole lys moet verstaanbaar, prakties en maklik implementeerbaar wees. Die navorser het die kontrolelys gebaseer op Feuerstein (1980) se model wat onderlê word deur die konsepte van strukturele kognitiewe modifieerbaarheid (SCM) en die gemedieerde leerervaring (MLE). Struktuele kognitiewe modifieerbaarheid (SCM) is baseer op die aanname dat mense oor die vermoë besit om hulle eie kognitiewe funksies te modifieer en om aan te pas by die veranderende eise van die lewe. Hulle is dus oopsisteme wat vatbaar vir kognitiewe veranderinge is. Struktuele veranderinge is deurdringend van aard en bepaal kognitiewe funksionering in 'n breë reeks van denkaktiwiteite. Feuerstein het 'n lys van ontoereikende kognitiewe funksies by die invoer-, uitbreidings- en uitvoerfases van die denkhandeling voorsien. Hierdie lys dien as riglyne by beide waargenome en gemedieerde pogings. Die identifikasie van ontoereikende kognitiewe funksies, die vlak van modifieerbaarheid en die mediëring om dit te wysig, word as van kardinale belang beskou in toekomstige leer. Die basiese parameters van die kognitiewe proses word gesubsumeer in die kognitiewe kaart. Dit sluit in: inhoud; operasie; modaliteit; fase (invoer, uitbreiding, uitvoer); vlak van kompleksiteit; vlak van abstraksie en vlak van effektiwiteit. Die navorser het al die basiese komponente van die leerfases in toeganklike Engels herskrywe en het voorbeelde van 150 subvaardighede, nodig vir suksesvolle verwerwing van leer in daardie spesifieke fase van die leerproses, voorsien. Die literatuuroorsig is deur 'n loodsstudie opgevolg. Die loodsstudie is uitgevoer ten einde die kontrolelys te verfyn en om te vergewis dat dit werklik gebruikersvriendelik, maklik verstaanbaar, en toepasbaar is sonder opleiding, en dat dit inligting voorsien wat 'n voordelige en verrykende professionele bydrae sal maak. Die bevindings van die loodsstudie is in die Kognitiewe Kontrolelys geïnkorporeer (Hoofstuk 4). Die navorsingsbevindings het op eenstemmige wyse die realisering van bostaande doelwitte onderskryf. Die opvoedkundiges het almal die noodsaaklikheid van die verbinding tussen assessering en onderrig verstaan en ook van die belangrikheid dat die opvoedkundige begrip en waardering toon van hoe 'n leerder leer en dus ontwikkel.

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Magano, Abram Tshwaro. "The design of a communication protocol for a distributed ADCS for SUNSAT 2." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52506.

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Thesis (MScEng)--University of Stellenbosch, 2001.
ENGLISH ABSTRACT: One of the main subsystems of SUNSAT is the Attitude Determination and Control System (ADCS), responsible for the orientation and positioning of the satellite. Due to the integrated architecture of the system, several shortcomings were identified. A possible solution to the problems is the implementation of a distributed system. The design of a communication protocol for a distributed system is the focus of this thesis. An investigation on different network topologies and communication protocols as well as error control techniques is carried out to establish a combination that meets the requirements of the ADCS. Based on defined protocol specifications a detailed protocol design is proposed. Then the protocol is implemented using a layered software structure that emanates from the OSI layering model, to provide well defined software structures and interfaces. A series of measurements have shown that the protocol meets the functional requirements of the ADCS and further provides reliable data transfer on the network.
AFRIKAANSE OPSOMMING: Een van die vernaamste dele van SUNSAT is die "Attitude Determination and Control System" (ADCS) wat verantwoordelik is vir die orientasie en posisionering van die satelliet. Verskeie tekortkomminge as gevolg van die geYntegreerde argitektuurvan die stelsel, is geYdentifiseer. 'n Moontlike oplossing vir die probleme is die implementering van 'n verspreide stelsel. Die ontwerp van 'n kommunikasie protokol vir 'n verspreide stelsel is die fokus van die tesis. 'n Ondersoek na verskeie netwerk topoloqie en kommukasie protokolle, asook foutbeheer tegnieke is uitgevoer om vas te stel watter kombinasie die ADCS se vereistes sal bevredig. 'n Gedetaileerde protokol ontwerp is voorgestel gebaseer op gedefineerde protokol spesifikasies. Hierdie protokol is toe geYmplementeer deur gebruik te maak van vlak gestruktureerde sagteware wat afkomstig is van die OSI model, met die oog op goed gedefineerde sagteware strukture en koppelvlakke. 'n Reeks meetings het aangedui dat die protokol die funksionele vereistes van die ADCS bevredig en dat dit verder betroubare data verplasing oor die netwerk verskaf.

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Conradie, P. A. (Petrus Alwyn). "The development of a dynamic engine-testing facility." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52509.

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Thesis (MScEng.)--University of Stellenbosch, 2001.
ENGLISH ABSTRACT: The last two decades have seen many changes within the automotive industry. Many advances have been made in the design, research and development of the internal combustion engine and technological progress made in the integrated-circuit and computer industry has resulted in the availability of reliable low-cost electronic components. These components have, over time, been incorporated into the very hearts of engines, thereby allowing for the accurate control of engine functions and processes to an extent that was previously impossible. Parallel to these developments is the growing concern for the environment and the realisation that resources are being consumed at ever-increasing rates. This has placed vehicle manufacturers under continual pressure to optimise their engines, not only for fuel efficiency, but also to reduce harmful emissions while continuing to deliver better performance and drivability characteristics. At the same time, engine testing equipment and facilities have had to keep abreast with these advances and this has required the development of more sophisticated testing facilities. One such facility is the dynamic engine test-bed. Among other features, this facility has the ability to subject test-bed mounted engines to loads similar to what would be experienced in a vehicle on the road. This approach allows for the optimisation of engine components and performance under more realistic conditions, yielding results far superior to those obtainable using more conventional steady-state testing and development procedures. This document discusses the development of such a dynamic engine test-bed at the Centre for Automotive Engineering at the University of Stellenbosch. The project was initiated by conducting a literature survey to establish the current state of technology in the field. The dynamic test-bed was developed around an existing direct-current electric motor and industrial speed controller configured in a regenerative manner. This setup enabled the unit to both absorb and deliver power, essential for the simulation of vehicle dynamics. Great care was taken to ensure that signals obtained from the test-bed were accurate and useful for further computer manipulation. Anti-aliasing filters were designed and manufactured to guarantee that signals could not be misinterpreted due to sampling effects. A computer-implemented vehicle model was developed to simulate, in real-time, vehicle response to torque developed by the engine on the test stand. The model included a manual transmission, clutch and a rigid drive-shaft. Driver input (accelerator, brake, clutch and gear selection) was by means of a set of pedals and hand-held gear selector switches. Various vehicle speed control strategies were investigated and recommendations made regarding their possible future implementation. System evaluation was accomplished by the simulated acceleration of a large truck. The simulations indicated that repeatable results could be obtained from the system. The system was also found to be adequately sensitive to reflect the effect of subtle changes made to engine parameters on vehicle acceleration. It was concluded that the dynamic engine test-bed did indeed offer the capability to conduct research and testing not previously available in South Africa. Finally, recommendations were made for the future improvement and expansion of the system's performance and capabilities.
AFRIKAANSE OPSOMMING: Die laaste twee dekades het baie veranderinge in die outomobiel industrie megebring. Groot vooruitgang is gemaak in die ontwerp, navorsing en ontwikkeling van die binnebrand enjin, terwyl tegnologiese vooruitgang in die geïntegreerde-stroombaan en rekenaar industrië betroubare elektroniese komponente teen lae koste beskikbaar gemaak het. Hierdie komponente is mettertyd in enjins geïnkorporeer en het die akkurate beheer van enjin funksies en prosesse moontlik gemaak. Saam met hierdie ontwikkeling, is daar toenemende kommer oor die omgewing en 'n bewuswording dat hulpbronne verbruik word teen 'n groeinde tempo. Hierdie feite plaas voertuig vervaardigers onder volgehoude druk om enjins te optimeer vir brandstof doeltreffendheid, maar ook om skadelike emissies te bekamp terwyl beter werksverrigting en bestuurbaarheid vereis word. Enjin toetstoerusting en fasiliteite moes terselfdetyd met hierdie vooruitgang byhou en het die ontwikkeling van meer gesofistikeerde toetsfasiliteite vereis. Een sodanige fasiliteit is die dinamiese enjin toetsbank. Een van die kenmerke van hierdie fasiliteit is dat dit toetsbank-gemonteerde enjins kan onderwerp aan 'n las soortgelyk as wat ondervind sou word in 'n voertuig op die pad. Hierdie benadering stel ingenieurs in staat om enjin komponente en werksverrigting te optimeer onder meer realistiese kondisies en lewer resultate van 'n baie hoër gehalte as wat verkry kan word deur gebruik te maak van meer konvensionele gestadigde-toestand toets- en ontwikkelings-prosedures. Hierdie dokument bespreek die ontwikkeling van so 'n dinamiese enjin toetsbank by die Sentrum vir Automobielingenieurswese aan die Universiteit van Stellenbosch. Die projek is geïnisieer deur 'n literatuurstudie te doen om die huidige stand van tegnologie in die gebied vas te stel. Die dinamiese enjintoetsbank is ontwikkel rondom 'n bestaande gelykstroom-motor en industriële spoed beheerder wat in 'n regeneratiewe konfigurasie opgestel is. Hierdie opstelling het die absorpsie en lewering van drywing moontlik gemaak, 'n vereiste vir die simulasie van voertuig dinamika. Baie tyd is gespandeer om te verseker dat seine afkomstig van die toetsbank akkuraat en bruikbaar was vir verdere rekenaar manipulasie. Anti-aliaseringsfilters is ontwerp en vervaardig om te verseker dat seine nie verkeerd geïnterpreteer kon word as gevolg van diskritiserings effekte nie. 'n Rekenaar ge-implementeerde voertuigmodel is ontwikkel om 'n voertuig se reaksie op draairnoment ontwikkel deur die enjin op die toetsbank intyds te simuleer. Die model het 'n handrat transmissie, koppelaar en starre dryf-as ingesluit. Bestuurder intree (vernellingspedaal, rem, koppelaar en rat seleksie) is bewerkstellig deur middel van 'n stel pedale en 'n hand geoperateurde rat skakelaar. Verskeie voertuig spoed-beheerders is ondersoek en aanbevelings is gemaak aangaande die toekomstige implementering daarvan. Die sisteem is geëvalueer deur die versnellingsimulasie van 'n groot vragmotor. Die simulasies het daarop gedui dat herhaalbare resultate van die sisteem verkry kon word. Daar is ook bevind dat die sisteem sensitief genoeg was om subtiele veranderinge aan enjinparameters in die resultate te weerspieël. Die gevolgtrekking is gemaak dat die dinamiese enjin toetsbank inderdaad die vermoëns gebied het om ontwikkeling en toetswerk te doen wat nie voorheen in Suid-Afrika moontlik was nie. Voorstelle is laastens gemaak aangaande die toekomstige verbetering en uitbreiding van die sisteem se vermoëns.

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Spies, Dorothea Janetta. "The coping mechanisms of low-income women : a grounded theory analysis of subjective descriptions of coping." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52501.

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Thesis (MA)--University of Stellenbosch, 2001.
ENGLISH ABSTRACT: The primary goal of this cross-cultural study was to determine how low-income female farm workers in the Western Cape of South Africa, describe their own coping mechanisms. Eight participants were asked to respond to an open-ended question on how they cope with life's difficulties. The current study formed part of a larger project entitled: "Forgotten women on farms". The psychological distress and resilience of female farm workers of colour in the Western Cape: exploring the possibilities for mental health support (Kruger, 1998). The coping interviews were analyzed by means of grounded theory. Analysis revealed that 28 coping mechanisms were identified by the participants themselves. A distinction was made between problem-focused coping mechanisms and emotion-focused coping mechanisms. Out of the 28 identified mechanisms, 8 were categorized as problem-focused coping mechanisms, while 20 were categorized as emotion-focused coping mechanisms, suggesting that the participants predominantly employ emotion-focused coping mechanisms. It was also found that the emotion-focused coping mechanisms employed by the participants often involved an avoidance of emotion. The findings were discussed by: (i) Critically discussing the way in which emotion-focused coping is traditionally defined within the coping literature. (ii) Comparing this to the conceptualization of the role of emotion by authors of trauma literature. Possible reasons for the prevalent use of emotion-focused coping mechanisms in this particular population were provided. The implications of these findings for assessment of coping strategies and for mental health care in this population were discussed.
AFRIKAANSE OPSOMMING: Ole hoofdoeisteiling van hierdie kruis-kulturele studie was om vas te stel hoe laeinkomste vroueplaaswerkers in die Wes-Kaap van Suid-Afrika hulle eie streshanteringsmeganismes beskryf. Agt deelnemers is gevra om op "n oop vraag oor hoe hulle lewensmoeilikhede hanteer, te reageer. Hierdie studie vorm deel van "n groter projek getiteld "Forgotten women on farms". The psychological distress and resilience of female farm workers of colour in the Western Cape: exploring the possibilities for mental health support (Kruger, 1998). Hierdie onderhoude oor streshantering is ontleed m.b.v. "grounded theory". Analise het getoon dat 28 hanteringsmeganismes deur die deelnemers self ge"ldentifiseer is. Onderskeid is gemaak tussen probleem-gerigte hanteringsmeganismes en emosioneel-gerigte hanteringsmeganismes. Uit die 28 gerdentifiseerde meganismes, is 8 gekategoriseer as probleem-gerigte hanteringsmeganismes, terwyl 20 gekategoriseer is as emosioneel-gerigte hanteringsmeganismes, duidend daarop dat deelnemers grootliks van emosioneel-gerigte hanteringsmeganismes gebruik maak. Daar is ook gevind dat die emosioneel-gerigte hanteringmeganismes dikwels "n vermyding van emosie behels het. Hierdie bevindinge is bespreek deur: (i) Die manier waarop emosioneel-gerigte hanteringsmeganismes tradisioneel in die literatuur gedefinieer word krities te bespreek. (ii) "n Vergelyking te tref met die wyse waarop die rol van emosie deur die outeurs van trauma literatuur gekonseptualiseer word. Moontlike redes vir die groter gebruik van emosioneel-gerigte hanteringsmeganismes in hierdie spesifieke populasie is voorsien. Die implikasies van hierdie bevindinge vir die meting van hanteringsmeganismes en vir geestesgesondheidsdienste binne hierdie populasie is bespreek.

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Govender, Dayalan. "The creation of an environment conducive to adult distance learning at Technikon Southern Africa." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52502.

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Thesis (MPhil)--University of Stellenbosch, 2001.
ENGLISH ABSTRACT: Distance education is increasingly being regarded as a possible solution for some of South Africa's educational problems. The Literature, however, illustrates no concrete research that has been conducted in terms of the creation of an environment conducive to adult distance learning institutions like Technikon Southern Africa. There are perhaps numerous reasons for this, however being a 'distance learning setting' is probably one the most prominent reasons for not seriously considering the learning environment as both an essential and vital determinant governing the learning process. In this research an interpretative study has been done of the programme group Police Practice of Technikon Southern Africa. The purpose of this study was to establish whether an environment conducive to adult learning does in fact exist in Police Practice and to develop a set of recommendations/criteria which could be used by this programme group of TSA. Various critical questions stimulated this study. These questions were in tum used to generate interview questions, which were used during the interview process. A qualitative approach was followed and data was obtained by means of interviews. The subjects of the study were educators of the programme group Police Practice of Technikon Southern Africa. There were a number .of conclusions drawn from this study. Some of the most prominent of them were as follows: • This is a lack of meaning given to the open / flexible approach. • Considering adult learning principles in distance learning IS of vital importance. • A more personalized approach to distance learning is necessary. • There is a crucial need for in-service training and staff development. • Technological advancements should be adopted with caution. • There exists a need to create a much more challenging environment for learners. Various recommendations were generated from both the conclusions and the literature study of this research. Some of the most important of them were as follows: • An open learning approach should be used. • The implications of adult learning principles should be carefully considered. • Personalising learning through the use of the text should be implemented. • Appropriate in-service training for educators should be made available. • A challenging environment should be created. In addition to this a possible checklist was proposed for the creation of an environment more conducive to adult learning (distance education).
AFRIKAANSE OPSOMMING: DIE SKEP VAN 'N OMGEWING WAT BEVORDERLIK IS VIR LEER AAN TECHNIKON SUIDER-AFRIKA Afstandsleer word toenemend beskou as 'n moontlike oplossing vir sekere Suid-Afrikaan onderwysprobleme. Volgens die literatuur is daar egter geen bewys van konkrete navorsing oor die skep van 'n omgewing wat bevorderlik is vir volwassene onderwysinstansies soos Technikon Suider-Afrika nie. Een van die hoofredes waarom die onderwysomgewing in afstandsonderwys nie as 'n noodsaaklike bepalende faktor in die leerproses beskou word nie is juis dat dit binne 'n "afstandsleer-konteks" val. In hierdie navorsing is 'n interpretatiewe studie van die Programgroep: Polisiepraktyk van Technikon Suider-Afrika uitgevoer. Die doel van die navorsing was om vas te stelof daar wel 'n onderwysomgewing wat bevorderlik is vir afstandsleer by polisiepraktyk bestaan. Verder was die doelook om riglyne te ontwikkel wat deur die Programgroep van Technikon Suider-Afrika gebruik sou kon word. Verskeie kritieke vrae het hierdie navorsing gestimuleer. Hierdioe vrae is op hulle beurt gebruik om vrae wat in die onderhoudproses gebruik sou word, te genereer. 'n Kwalitatiwe benadering is gevolg en die data is deur middel van onderhoude ingesamel. Fasiliteerders/dosente van die Programgroep: Polisiepraktyk van Technikon Suider- Afrika vir die onderhoude gebruik. Verskeie gevolgtrekkings/afleidings het uit die navorsmg gespruit. Van die mees prominente gevolgtrekkings sluit in: • Daar is 'n gebrek aan sinvolheid met betrekking tot oop/plooibare leer. • Dit is duidelik dat volwassene leerbeginsels in afstandsleer belangrik is. • 'n Meer persoonlike benadering tot afstandsleer is noodsaaklik. • Daar is 'n deurslaggewende behoefte aan indiensopleiding en ontwikkeling. • Omsigtigheid in die benadering tot tegnologiese vooruitgang is noodsaaklik. • Daar bestaan 'n behoefte aan die skep van 'n veel meer uitdagende omgewing vir leerders. 'n Aantal aanbevelings is op grond van die gevolgtrekkings en die literatuurstudie van hierdie navorsing gegenereer. Voorts is 'n moontlike kontrolelys vir die totstandkoming van 'n omgewing wat bevorderlik is vir volwassene afstandsleer, voorgestel. Die belangrikste daarvan was die volgende: • Die gebruik van 'n oop-leer-benadering • Die inagneming van die implikasies van volwassene leer-beginsels • Die verpersoonliking van leer deur die gebruik van die teks • Toepaslike indiensopleiding vir opvoeders • Die sken van 'n omgewing wat uitdagings bied.

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Van, Nieuwenhuyzen Bernard Jansen. "The determination of the elements of a strategy for the implementation of project management." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52507.

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Thesis (MBA)--Stellenbosch University, 2001.
ENGLISH ABSTRACT: Many organisations are in search of the most effective and efficient way to ensure strategic advantage over other organisations. Various management researchers and practicing managers agree that project management, with the holistic and systems approach thereof is an answer to above-mentioned problem. Introducing integrated project management practices and the related formalization of the project management function usually requires significant adjustments in attitudes, understanding, responsibilities, methods, and reporting relationships throughout the organisation. This necessitates a study of the implementation of project management. Strategy formulation and implementation is the responsibility of top management. Thus top management has to ensure that this process of strategy formulation is done with the utmost care and includes the elements that will promote successful strategy implementation. Strategy implementation is the means of putting the strategy to work. It involves the accomplishment of administrative tasks, allocation of necessary resources, and the development of appropriate organisational systems and competencies to support strategic plans. It is the task then of top management to determine the best organisational structure, leadership style, organisational culture and reward systems that will allow the organisation to implement and execute project management. Management needs to ask themselves what they can do to improve the environment for project management. It is the objective of this study to enlighten management by means of a literature study on the basics and best practices with regard to project management strategy implementation.
AFRIKAANSE OPSOMMING: Menige organisasies is op soek na meer effektiewe en doeltreffende metodes om 'n strategiese voordeel bo ander te bekom. Menige bestuursnavorsers en praktiserende bestuurders is van mening dat projekbestuur met die hollistiese en stelselsbenadering daarvan, die antwoord bied op bogenoemde kwessie. Die bekendstelling van geïntegreerde projekbestuurpraktyke en die verwante formalisering van die projekbestuurfunksie vereis wesenlike veranderings in houdings, begrip, verantwoordelikheid, metodes en rapporteringsverhoudings reg deur die organisasie. Dit noodsaak 'n studie van die implementering van projekbestuur. Strategieformulering en implementering is die taak van topbestuur. Topbestuur moet dus die proses van strategie formulering na behore aanpak en voorsiening maak vir verskeie elemente wat kan bydra tot die suksesvolle implementering van die strategie. Strategie implementering behels die toepassing van 'n strategie, asook die voltooiing van die administratiewe take, die toedeling van die noodsaaklike hulpbronne en die ontwikkeling van gepaste organisatoriese stelsels en vermoëns om die strategiese planne te steun. Dit is dus die taak van topbestuur om vas te stel watter organisasiestruktuur, vorm van leierskap, organisasiekultuur en vergoedingstelsels die beste daartoe gaan bydra om projekbestuur suksesvol te implementeer en uit te voer. Topbestuur behoort dus te vra wat gedoen kan word om 'n omgewing te skep wat voordelig is tot projekbestuur. Dit is dan die doel van hierdie studie om met behulp van 'n literatuurstudie topbestuur te kan inlig ten opsigte van die basiese en beste gebruike van projekbestuurstrategie implementering.

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Magobotiti, Chris Derby. "The contribution of social work to the prevention of crime by the criminal justice system in the Western Cape." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52500.

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Thesis (M.A.)--Stellenbosch University, 2001.
ENGLISH ABSTRACT: This study deals with crime prevention within the criminal justice system in response to the current crime situation in the Western Cape. It describes the structure and function of the criminal justice system and assesses crime prevention processes with specific reference to the role of social work within the criminal justice system. It further examines the criminal justice system as practised in the Western Cape, paying specific attention to the role of the police, criminal courts and prisons in the prevention of crime. In line with the nature of the study an exploratory approach was used. The data was collected from both primary and secondary sources. Interviews and observations were the main research techniques used for gathering primary data. Secondary data + was gathered by means of a study of the literature. Structured and unstructured interviews were conducted with social workers, magistrates, police officers, prosecutors, victims, offenders, community workers and other officials of the criminal justice system. These interviews were mainly conducted at Wynberg magistrates' court, Drakenstein Prison (formerly known as Victor Verster Prison) and organisations based in the metro areas and on the Cape Flats. The study was conducted over a period of three years with the interview schedule administered between May and August 2000. A sample of 21 respondents was selected on the basis of a purposive approach and procedure. The comprehensive interview schedule consisted of mainly open-ended and a few closed questions, generating information on the profiles of respondents, crime dynamics in the Western Cape, the sentencing process and prevention strategies, matters related to the criminal justice system and corrections, and the role of community justice in the prevention of crime. The generated qualitative data was analysed and interpreted. The findings suggested the necessity for social work to make a contribution to the prevention of crime in a sensitive and proactive way. The analysis has shown that criminal justice approaches can significantly enhance the process of crime prevention, but that the criminal justice system requires combined strategies and approaches for crime prevention to be effective. It is in this context that the contribution of social work can be much more effective. The recommendations of the study have demonstrated a need for social workers to promote approaches that are premised on a broader understanding of the role of the criminal justice system in the prevention of crime. It is important to state that the study's recommendations for the prevention of .crirne can also be implemented by other role-players, particularly within the criminal justice system.
AFRIKAANSE OPSOMMING: Hierdie ondersoek handeloor misdaadvoorkoming deur die strafregstelsel in reaksie tot die huidige misdaadsituasie in-die Wes-Kaap. Dit beskryf die struktuur en funksie van die stafregstelsel en beoordeel misdaadvoorkomingsprosesse met besondere verwysing na die rol van maatskaplike werk binne die strafregstelsel. Dit ondersoek verder die strafregstelsel soos beoefen in die Wes-Kaap deur veral aandag te gee aan die rol van die polisie, die howe en gevangenisse in die voorkoming van misdaad. Die aard van die ondersoek vereis dat 'n eksplorerende benadering gevolg is. Data is versamel uit primêre sowel as sekondêre bronne. Onderhoude en waarnemings + was die hoof navorsingstegnieke wat gebruik is om primêre data te versamel. Sekondêre data is weer verkry deur 'n studie van die literatuur. Gestruktureerde en ongestruktureerde onderhoude is gevoer met maatskaplike werkers, landdroste, polisie beamptes, openbare vervolgers, slagoffers, gevonnisde misdadigers, gemeenkapswerkers en ander beamptes van die strafregstelsel. Hierdie onderhoude is hoofsaaklik gevoer by die Wynbergse landdroshof, Drakenstein Gevangenis (voorheen Victor Verster Gevangenis) en organisasies werksaam in die metropolitaanse gebiede en die Kaapse Vlakte. Die ondersoek is onderneem oor 'n periode van drie jaar met die onderhoude gevoer tussen Mei en Augustus 2000. 'n Steekproef van 21 respondente is geselekteer op die grondslag van 'n doelgerigte benadering en prosedure. Die omvangryke onderhoudskedule bestaan uit oorwegend oop en 'n beperkte aantal geslote vrae, en het inligting gegenereer oor die respondent-profiel, misdaad-dinamika in die Wes-Kaap, die vonnisopleggingsproses en voorkomingstrategieë, sake rakende die strafregstelsel en korrektiewe optrede, en die rol van gemeenskapsreg in die voorkoming van suggereer die noodsaaklikheid daarvan vir maatskaplike werk om 'n bydrae te lewer ,- tot die voorkoming van misdaad op 'n sensitiewe en proaktiewe wyse. Die ontledings het aangetoon dat strafregbenaderings die proses van misdaadvoorkoming beduidend kan verhoog maar om misdaadvoorkoming effektief te laat geskied, vereis die strafregstelsel gekombineerde strategieë en benaderings. Dit is binne hierdie verband dat die bydrae van maatskaplike werk baie meer effektief kan wees. Die aanbevelings van die ondersoek wys op 'n behoefte by maatskaplike werkers om benaderings te bevorder wat gebaseer is op 'n breër begrip van die rol van die strafregstelsel in die voorkoming van misdaad. Dit is van belang om te stel dat die ondersoek se aanbevelings vir die voorkoming van misdaad ook geïmplementeer kan word deur ander rolspelers, veral binne die strafregstelsel.

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Josephy, Svea Valeska. "The development of a critical practice in post-apartheid South African photography." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52508.

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Thesis (MA)--Stellenbosch University, 2001.
ENGLISH ABSTRACT: South African photography in the 20th century was dominated by the documentary genre. This genre has its roots in 19th century Modernist and colonialist belief in the accuracy of the camera as a tool of representation, and faith in the camera's objectivity and ability to present empirical evidence and 'truth'. These positivist notions were carried into South African documentary practice during the apartheid era. Apartheid-era South African documentary photography was particularly focused on exposing the socio-political ills of apartheid in order to gain support for the liberation movement, both locally and abroad. It was serious and didactic in its purpose and did not allow for creative responses to the medium, as the camera was seen as a 'weapon' of the struggle. The 1990s saw the beginning of the emergence of a liberated South Africa. The documentary imperative to record and expose apartheid practices was now increasingly redundant. Photographers, particularly after the elections, were faced with a 'crisis' of sorts in documentary as the main focus of their subject had been removed. The upshot of this was that documentary photographers had to find new subjects, which they had to approach in different ways. The arrival of Postmodernism in South Africa coincided with the demise of apartheid. It had in essence been kept at bay by what seemed to be the more pressing issues of the struggle. Postmodern art and its theoretical base, post-structuralism, argued for an erosion of the previously fixed concepts of genre, and allowed for the mixing of the previously separate categories of 'documentary' and 'art'. There was a radical questioning of previously fixed constructs of race, identity, class and gender. The erosion of the documentary imperative to record allowed for more creative responses to the medium than ever before. Artists were able to experiment technically, with video, multi-media, digital photography, historical processes, colour, composite work and interactive pieces. In this thesis I explore the above-mentioned shift and situate my practical work within this contemporary paradigm.
AFRIKAANSE OPSOMMING: Op die gebied van fotografie is die toneel in Suid-Afrika in die 20ste eeu deur die dokumentêre genre oorheers. Die genre het sy oorsprong in 'n Modernistiese en kolonialistiese, 19de-eeuse siening, naamlik dat die kamera 'n objektiewe en akkurate voorstellingsmiddel is waarmee empiriese bewyse ingesamel en die "waarheid" uitgebeeld kan word. Hierdie positiwistiese uitkyk is tydens die apartheidsjare op die dokumentêre praktyk in Suid-Afrika oorgedra. Tydens hierdie era was dokumentêre fotografie daarop gemik om die sosiopolitieke euwels van Suid-Afrika onder apartheid bloot te lê, ten einde sowel binnelands as buitelands vir die bevrydingsbewegings steun te werf Met hierdie gewigtige en didaktiese doel voor oë, was daar min ruimte vir 'n kreatiewe hantering van die medium, aangesien die kamera as 'n "wapen" in die stryd teen apartheid gesien is. Die 1990's het die begin van Suid-Afrika se bevryding ingelui. Die dokumentêre imperatief om apartheidsdade op rekord te stel en aan die groot klok te hang, het vervaag. Fotograwe het 'n soort "krisis" in die gesig gestaar, veral na die verkiesing, want die onderwerp van hulle fokus het verdwyn. Die resultaat was dat dokumentêre fotograwe nuwe temas moes vind, wat hulle vanuit 'n ander oogpunt moes benader. In Suid-Afrika het die koms van Postmodernisme met die ondergang van apartheid saamgeval. Voorheen is dit in wese oorskadu deur oënskynlik belangriker kwessies rondom die "struggle". Postmoderne kuns en die teoretiese grondslag daarvan, naamlik post-strukturalisme, bepleit 'n beweging weg van die vaste begrip van genre wat voorheen gegeld het. Hiervolgens raak 'n vermenging van die voorheen afsonderlike kategorieë 'dokumentêr' en 'kuns' moontlik. Dit bring ook 'n radikale bevraagtekening mee van die konstrukte ras, identiteit, klas en geslag, wat voorheen as vaste indelings beskou is. Die verflouing van die dokumentêre imperatief om dinge op rekord te stel, maak dit moontlik om op 'n meer kreatiewe wyse as ooit tevore met die medium om te gaan. Kunstenaars kan nou met die tegniese sy van fotografie eksperimenteer: video, multimedia, digitale fotografie, historiese prosesse, kleur, saamgestelde werke en interaktiewe stukke. In hierdie tesis kyk ek op verkennende wyse na die veranderings waarna hierbo verwys word, en situeer ek my praktiese werk binne hierdie kontemporêre paradigma.

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Batool, Abeera. "Advanced Undersepage Analyses for Levees." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/52507.

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The events of Hurricane Katrina in 2005 prompted the US Army Corps of Engineers (USACE) to commission studies to identify the failure mechanisms of levees and I-walls. This involves updating of the current USACE Engineering Manual (EM) 1110-2-1913, "Design and Construction of Levees," which uses Blanket Theory for seepage analysis. Blanket Theory entails analytical methods for calculating seepage pressures and flows beneath levees. The revision of the manual will address the design seepage criteria for levees, with a focus on incorporating new seepage analysis procedures besides Blanket Theory. Finite element analysis is one such method that has more recently become the method of choice for general seepage analyses in geotechnical engineering. The focus of this research is mainly on underseepage analyses of levees in the lower Mississippi valley using numerical modeling, with a goal of helping engineers in making the transition from current Corps methods to finite element analysis. General guidelines are provided to conduct seepage analysis using finite element analysis for pre-defined Blanket Theory cases as well as for the design of seepage berms. In addition, the 3D finite element modeling is conducted for a full-scale field load test involving complex geometry and stratigraphy, which is useful in better understanding the response of levees and I-walls.
Ph. D.

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Koval, Valentyna. "The use of standardized communication protocol for patient handover in emergency department setting." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/52509.

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Patient handover has been recognized as a highly complex and dynamic process that relies heavily on effective communication. The lack of effective communication, particularly in an interprofessional Emergency Department (ER) setting, can compromise the quality of patient care. The goal of this project is to improve patient handover process by utilizing SBAR (Situation, Background, Assessment and Recommendation) technique to standardize interprofessional communication in the ER. It is hypothesized that the modified SBAR protocol will be well perceived by healthcare providers and will improve completeness and accuracy of the information transferred during ER patient handover between members of different professional groups. Three specific objectives guided the work of this project: 1) to modify the SBAR technique and adapt it for an interprofessional ER setting; 2) to study how the modified SBAR protocol is perceived by the students (Usability Study); 3) to design an experimental study to evaluate the effectiveness of the modified SBAR protocol (Effectiveness Study). Following the modification of the SBAR technique, 47 third-year medical students were invited to participate in the Usability Study. The students were randomly assigned into eight teams. One student from each team was randomly selected to verbalize the handover using the modified SBAR protocol, while the other students observed. The usability of the protocol was assessed using the following criteria: ease of learning; ease of use; perceived usefulness and satisfaction. Students found the protocol easy to learn (91%); simple to implement (85%); and useful during the handover (87%). Students were satisfied with the protocol, as it helps structure the verbal report; promotes common language amongst team members and decreases confusion during the communication (83%). Nonequivalent groups post-test only design was developed to assess the effectiveness of the modified SBAR protocol on completeness and accuracy of the patient information transferred during ER patient handover between members of different professional groups. We anticipate that use of the modified SBAR protocol will significantly improve ER interprofessional communication by ensuring complete and accurate information transfer during the patient handover. Further studies are needed to support this claim.
Graduate and Postdoctoral Studies
Graduate

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Etheridge, George Alexander. "Investigation of progressive damage and failure in IM7 carbon fiber/5250-4 bismaleimide resin matrix composite laminates." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/19669.

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Chatain, Franck. "Caractérisation de réacteurs à plasma basse pression-haute densité : étude de la cinétique des ions par fluorescence induite par laser." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10121.

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Les traitements de materiaux par plasma sont actuellement largement utilises dans la plupart des industries bien que les processus physiques qui regissent ces decharges ne soient pas totalement maitrises. Avec l'essor de nouvelles sources optiques, le diagnostic de fluorescence laser, non perturbatif vis a vis du milieu, associe aux diagnostics electriques, permet la caracterisation de sources a plasma basse pression. Grace a cet outil, on peut ainsi comprendre la cinetique des ions (production, excitation, diffusion) et mesurer les parametres critiques influant sur la qualite du traitement (flux, directionalite, fonction de distribution en energie des particules bombardant la surface, temperature du substrat)

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Pourkamali, Anaraki Siavash. "Electrically Coupled MEMS Bandpass Filters." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5250.

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This dissertation reports, for the first time, on the electrical coupling of microelectromechanical (MEM) resonators for high order bandpass filter synthesis. Electrical coupling of MEM resonators has a strong potential for extension of the operating frequency of MEM bandpass filters into the ultra high frequency (UHF) range and provides higher tunability and design flexibility compared to the mechanical coupling approach. Various schemes of electrical coupling are presented in this dissertation. Electromechanical models of clamped-clamped beam resonators, and various types of electrically coupled filters are presented. Lower frequency prototypes of electrically coupled filters with operating frequencies in the hundreds of kHz are implemented using micromechanical single crystal silicon clamped-clamped beam resonators. Measurement results are in good agreement with the developed electrical equivalent models of the filters. It is demonstrated that the characteristics of electrically coupled filters can be widely tuned by changing the DC polarization voltages.

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寺嶋, 由之介. "執筆回顧(<特集>五十年史編纂を終えて)." 名古屋大学史編集室, 1996. http://hdl.handle.net/2237/5250.

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Marín, Domine Marta. "Text i desig: una aproximació psicoanalítica a la traducció." Doctoral thesis, Universitat Autònoma de Barcelona, 2001. http://hdl.handle.net/10803/5250.

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La tesi té com a objectius principals:

- Reflexionar sobre la traducció -entesa com a pràctica i com a procés o acte -a partir del saber psicoanalític sobre el llenguatge.
- Qüestionar la teoria tradicional més estesa sobre la traducció.
- Introduir, en el marc general de la reflexió teòrica sobre la traducció, els conceptes generals de la
Psicoanàlisi tal i com els exposen Sigmund Freud i Jacques Lacan.
Per aconseguir els objectius esmentats la tesi s'ha dividit en dues parts:
Part I, on s'exposen els principis teòrics que permeten sostenir la relació entre psicoanàlisi i llenguatge a partir de les obres de Freud La interpretació dels somnis, L'acudit i la seva relació amb l'inconscient, Psicopatologia de la vida quotidiana, i de la col·lecció d'articles de Jacques Lacan publicats a Écrits.
Part II, on es problematitza els conceptes clàssics de Veritat, Sentit i Estil que configuren la visió tradicional de la traducció a partir del coneixement que aporta la psicoanàlisi lacaniana, contrastat amb un recorregut històric que permet analitzar la raó per la qual els conceptes esmentats perviuen com a visió canònica de la traducció.
La conclusió general és que introduir la hipòtesi de l'inconscient a la teoria i la pràctica de la traducció permet una aproximació nova al tema en la qual es desestabilitzen conceptualment els mites edificats al voltant de la traducció i es possibilita una nova lectura dels ideals clàssics i contemporanis que recorren aquesta activitat.
The dissertation has the following theoretical goals:
- To reflect on translation -understood as a practice and as a process or act- taking into account the psychoanalytic theory about language.
- To question the traditional theory of translation.
- To introduce, in the theory of translation, the main concepts of psychoanalysis as is given by Sigmund Freud and Jacques Lacan.
To achieve the above mentioned goals the thesis has been divided in two parts:
Part I, where are explained the main key concepts of psychoanalysis and language departing from the readings of Freud's works: The Interpretations of Dreams, The Wit and its relation to the unconscious, and Psicopatology of day to day life, along with the articles of Lacan published in Écrits.
Part II, where the traditional concepts of Truth, Sense and Style are problematized departing from the theory of psychoanalysis. This concepts are also analysed using a historical background that has made possible to analyse the prevalence of these traditional concepts within the canonical frame work of translation.
The general conclusion is that introducing the hypothesis of the unconscious into the theory of translation enables a new approach that desestabilizes the traditional concepts along with a new reading of the ideals that still permeate the canonical discourse on translation.

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Lu, Kang. "Modelling of Multicomponent Diffusion and Swelling in Protein Gels." Thesis, University of Canterbury. Chemical and Process Engineering, 2011. http://hdl.handle.net/10092/5250.

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Some protein gels are products of the dairy industry and some are used as pH-sensitive gels for the controlled delivery of biologically active substances. To understand the dynamics of drug delivery it is very important to establish a mathematical model of protein gel swelling. This required the identification and integration of theory and equations from a wide range of topics. The aim of this research was to develop a mathematical model of transport in polyelectrolyte gels (using the example of β-lactoglobulin protein gels). A complete mathematical model of protein gel swelling was established. The swelling process of protein gels in this thesis involved multicomponent diffusion, chemical ionisation and mechanical deformation. Diffusion of electrolyte solutions through protein gels was modelled using the generalised Maxwell-Stefan (GMS) equation. The swelling pressure as a driving force in the GMS equation was described by rubber elasticity theory. Thermodynamic factors including the charged protein effect were considered in the GMS equation. The model included pH as a variable so it could be applied to both acidic and alkaline cases. The model yielded a set of partial differential equations with algebraic equations for which COMSOL was selected as the simulation software. Although it was found that COMSOL could not always solve the model equations, numerical solutions were obtained for several cases. The model predicted that the equilibrium swelling degree of the gel decreased with high concentration of salts in the bulk solution. The model also predicted that the non-ideal effects were not always small and they depended on the activity coefficients of the species. Satisfactory solutions could not be obtained for all cases using commercial software such as COMSOL Multiphysics. It was shown that COMSOL did not conserve mass but conservativeness was critical in this application because pH and hence the net protein charge is very sensitive to the mass of hydrogen present. In the future, research should be carried out to improve the pressure model in the GMS equation. Theoretical research on Manning condensation theory should be done to modify Manning’s model for more robust prediction of activities of water and ions with protein, and experiments should be done to validate the performance of the modified Manning model. Efforts should be made to write the programming code for a finite volume method to solve the system in three dimensions.

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23

Webster, Ingrid. "The effect of creatine supplementation on myocardial metabolism and function in sedentary and exercised rats." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5250.

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Thesis (PhD (Biomedical Sciences. Medical Physiology))--University of Stellenbosch, 2010.
ENGLISH ABSTRACT: Background: There has been a dramatic increase in the use of dietary creatine supplementation among sports men and women, and by clinicians as a therapeutic agent in muscular and neurological diseases. The effects of creatine have been studied extensively in skeletal muscle, but knowledge of its myocardial effects is limited. Objectives: To investigate the effects of dietary creatine supplementation with and without exercise on 1) basal cardiac function, 2) susceptibility to ischaemia/reperfusion injury and 3) myocardial protein expression and phosphorylation and 4) mitochondrial oxidative function. Methods: Male Wistar rats were randomly divided into control or creatine supplemented groups. Half of each group was exercise trained by swimming for a period of 8 weeks, 5 days per week. At the end of the 8 weeks the open field test was performed and blood corticosterone levels were measured by RIA to determine whether the swim training protocol had any effects on stress levels of the rats. Afterwards hearts were excised and either freeze-clamped for biochemical and molecular analysis or perfused on the isolated heart perfusion system to assess function and tolerance to ischaemia and reperfusion. Five series of experiments were performed: (i) Mechanical function was documented before and after 20 minutes global ischaemia using the work heart model, (ii) A H2O filled balloon connected to a pressure transducer was inserted into the left ventricle to measure LVDP and ischaemic contracture in the Langendorff model, (iii) The left coronary artery was ligated for 35 minutes and infarct size determined after 30 minutes of reperfusion by conventional TTC staining methods. (iv) Mitochondrial oxidative capacity was quantified. (v) High pressure liquid chromatography (HPLC) and Western Blot analysis were performed on blood and heart tissue for determination of high energy phosphates and protein expression and phosphorylation. Results: Neither the behavioural studies nor the corticosterone levels showed any evidence of stress in the groups investigated. Hearts from creatine supplemented sedentary (33.5 ± 4.5%), creatine supplemented exercised rats (18.22 ± 6.2%) as well as control exercised rats (26.1 ± 5.9%) had poorer aortic output recoveries than the sedentary control group (55.9 ± 4.35% p < 0.01) and there was also greater ischaemic contracture in the creatine supplemented exercised group compared to the sedentary control group (10.4 ± 4.23 mmHg vs 31.63 ± 4.74 mmHg). There were no differences in either infarct size or in mitochondrial oxygen consumption between the groups. HPLC analysis revealed elevated phosphocreatine content (44.51 ±14.65 vs 8.19 ±4.93 nmol/gram wet weight, p < 0.05) as well as elevated ATP levels (781.1 ±58.82 vs 482.1 ±75.86 nmol/gram wet weight, p<0.05) in blood from creatine supplemented vs control sedentary rats. These high energy phosphate elevations were not evident in heart tissue and creatine tranporter expression was not altered by creatine supplementation. GLUT4 and phosphorylated AMPK and PKB/Akt were all significantly higher in the creatine supplemented exercised hearts compared to the control sedentary hearts. Conclusion: This study suggests that creatine supplementation has no effects on basal cardiac function but reduces myocardial tolerance to ischaemia in hearts from exercise trained animals by increasing the ischaemic contracture and decreasing reperfusion aortic output. Exercise training alone also significantly decreased aortic output recovery. However, the exact mechanisms for these adverse myocardial effects are unknown and need further investigation.
AFRIKAANSE OPSOMMING: Agtergrond: Die gebruik van kreatien as dieetaanvulling het in die afgelope aantal jaar dramaties toegeneem onder sportlui, sowel as mediese praktisyns wat dit as ‘n terapeutiese middel vir die behandeling van spier- en neurologiese siektes aanwend. Die effekte van kreatien op skeletspier is reeds deeglik ondersoek, maar inligting aangaande die miokardiale effekte van die preperaat is beperk. Doelwitte: Om die effekte van kreatien dieetaanvulling met of sonder oefening ten opsigte van die volgende aspekte te ondersoek: 1) basislyn miokardiale funksie, 2) vatbaarheid vir iskemie/herperfusie besering, 3) proteïenuitdrukking en -fosforilering in die miokardium en 4) mitochondriale oksidatiewe funksie. Metodes: Manlike Wistar rotte is ewekansig in kontrole of kreatien aanvullings groepe verdeel. Helfte van elke groep is aan oefening in die vorm van swemsessies, vir ‘n periode van 8 weke, 5 dae per week blootgestel. Gedrags- en biochemiese toetse is aangewend om die moontlike effek van die swemprotokol op die rotte se stres vlakke te bepaal. In hierdie verband is die oop area toets gebruik, asook bloed kortikosteroon vlakke gemeet deur radioaktiewe immuunessais. Harte is daarna uit die rotte gedissekteer en gevriesklamp vir biochemiese en molekulêre analise, of geperfuseer op die geïsoleerde werkhart perfusiesisteem om sodoende funksie en weerstand teen iskemie en herperfusie beskadeging te bepaal. Vyf eksperimentele reekse is uitgevoer: (i) Meganiese funksie is noteer voor en na 20 minute globale isgemie in die werkhart model; (ii) ‘n Water gevulde plastiek ballon, gekoppel aan ‘n druk omsetter, is in die linker ventrikel geplaas om sodoende linker ventrikulêre ontwikkelde druk (LVDP), asook iskemiese kontraktuur te meet; (iii) Linker koronêre arterie afbinding is vir ‘n periode van 35 minute toegepas en die infarktgrootte bepaal na 30 minute herperfusie deur gebruik te maak van standaard kleuringsmetodes; (iv) Mitochondriale oksidatiewe kapasiteit is gemeet; (v) Hoë druk vloeistof chromatografie (HPLC) en Western Blot analises is uitgevoer op bloed en hartweefsel vir die bepaling van hoë energie fosfate (HEFe), sowel as proteïenuitdrukking en -fosforilering. Resultate: Beide gedragsstudies en kortikosteroonvlakke het geen teken van stres in die betrokke groepe getoon nie. Die groep blootgestel aan kreatienaanvulling en oefening se harte het na iskemie funksioneel swakker herstel as harte van die onaktiewe kontrole groep (18.22±6.2% vs 55.9±4.35%; p<0.01), asook ‘n groter ikgemiese kontraktuur in vergelyking met die onaktiewe kontrole groep ontwikkel (31.63±4.74 mmHg vs 10.4±4.23 mmHg). Daar was geen verskille in infarktgrootte of mitochondriale suurstofverbruik tussen die verskillende groepe waargeneem nie. HPLC analise het verhoogde fosfokreatien (44.51±14.65 vs 8.19±4.93 nmol/gram nat gewig, p<0.05) en adenosientrifosfaat (ATP) bloedvlakke (781.1±58.82 vs 482.1±75.86 nmol/gram nat gewig, p<0.05) in kreatien aanvullings vergelyk met die kontrole groepe getoon. Daar was egter geen meetbare veranderings in HEF vlakke in hartweefsel nie. Gepaardgaande hiermee het kreatienaanvulling geen effek gehad op die uitdrukking va die kreatien transporter nie. In vergelyking met onaktiewe kontrole harte was GLUT4, en fosforileerde AMPK en PKB/ Akt beduidend hoër in harte van geoefende rotte met kreatienaangevulling. Gevolgtrekking: Hierdie data dui daarop dat kreatienaanvulling geen effek op basislyn miokardiale funksie het nie. Kreatienaanvulling het egter die miokardium se weerstand teen iskemiese skade verlaag in harte van rotte blootgestel aan oefening: iskemiese kontraktuur is verhoog en aorta-uitset tydens herperfusie is verlaag. Die presiese meganismes hierby betrokke is egter onbekend en vereis dus verdere studie.
Division of Medical Physiology (University of Stellenbosch), The National Research Foundation and the Harry Crossley Fund for financial support.

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Gibson, Jordan Leigh Russell Richard Rankin. "Through the lens of the land changing identity in the novels of Bernard MacLaverty /." Waco, Tex. : Baylor University, 2008. http://hdl.handle.net/2104/5250.

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Jacobs, Michael A. "Identification and characterization of a chloroplast-encoded His-Asp signal transduction protein in the toxic stramenopile Heterosigma akashiwo /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/5250.

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Gartman, Peggy Janell. "Social Referencing in Domestic Dogs: The Effects of Human Affective Behavior on Canines Point Following." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5250.

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A number of studies have examined the ability of dogs (Canis Familiaris) to follow human given cues. Dogs have been shown to reliably follow pointing cues. To date, few studies have investigated whether emotional cues are a factor in these canine choices. We tested dogs using a two-way object choice food task. Sixty large and medium breed dogs were tested in one of four conditions (positive baited, silent baited, negative non-baited and negative baited). Results showed that dogs reliably followed human pointing cues over emotional cues in three of the four conditions. In the negative non-baited bowl, dogs did not select the non-indicated, baited bowl over chance. This suggests that canines use pointing as a more salient cue than emotions in object choice tasks.

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Costa, Ricardo Mostardeiro. "O sacramento do matrimônio: manifestação da união esponsal Cristo-igreja." Pontifícia Universidade Católica do Rio Grande do Sul, 2007. http://hdl.handle.net/10923/5250.

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No primeiro capítulo do trabalho expõe-se breve exegese de diversos textos do Antigo e do Novo Testamento relativos ao tema: Cântico dos Cânticos; Salmo 44 (45); alguns textos dos profetas Isaías, Jeremias, Oséias e Ezequiel; Ef 5, 21-33 e Ap 12, 1-6; 19,5-8; 21, 1-2. 9-10. No segundo capítulo, apresenta-se o ensinamento da eclesiologia patrística acerca da esponsalidade da união entre Cristo e a Igreja. Nele, percebe-se que os Santos Padres apresentaram a Igreja como a Esposa Imaculada do Cordeiro, pela qual Ele se entregou com o fim de santificá-la. No capítulo terceiro, apresentam-se alguns elementos da doutrina ensinada pelo Magistério Eclesiástico a respeito do matrimônio, o qual expressa de forma visível a união nupcial entre Cristo e a Igreja. Estes textos são dos Concílios de Trento e Vaticano II, do Magistério de João Paulo II e da Deus caritas est, de Bento XVI. No quarto capítulo, a partir das idéias expostas nos precedentes, busca-se apresentar a realidade do matrimônio hoje como instituição, salientando sua sacramentalidade, a qual encontra sua raiz exatamente na relação esponsal entre Cristo e a Igreja. O matrimônio é um sacramento porque foi instituído por Jesus, recebeu sua eficácia pelo Seu sangue na cruz e expressa a relação esponsal Dele com a Igreja.

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Mwafulirwa, Boss. "Women's experiences of amenorrhea following Depo-Provera use at a district hospital in Malawi." University of the Western Cape, 2016. http://hdl.handle.net/11394/5250.

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Magister Curationis - MCur
Depo-Provera, an injectable contraceptive, is utilized by about 30% of married women in Malawi. Most women have reported their preference to use Depo-Provera due to its effectiveness in preventing pregnancy, reversibility and easy to use since it is given once at 12-weeks intervals. Despite the method having such advantages, it has menstrual effects, and one of the major concerns for women, particularly in Africa, is amenorrhea. In Malawi, 40% of Depo-Provera users report experiencing amenorrhea after one year of use. Despite the concern for amenorrhea, some women have continued using the method. Literature shows that there is limited information on women's experiences of amenorrhea following use of Depo-Provera. A descriptive phenomenological research design was used to explore and describe women’s experiences of amenorrhea following use of Depo-Provera in order to understand how women experience amenorrhea and give meaning to the experience. Data were collected through in-depth unstructured interviews with six women, who were selected using purposive sampling. The interviews were conducted in Tumbuka language. Data analysis was done using Colaizzi’s method of analyzing descriptive phenomenological data. Five themes and some sub-themes emerged from data analysis. The themes were: "Lack of knowledge on cause of amenorrhea", "Fear of pregnancy", "Misconceptions associated with Depo-Provera Induced Amenorrhea", "Lack of proper counseling on amenorrhea resulting from Depo-Provera use" and "Amenorrhea not perceived as a problem when midwives provide adequate information". The themes showed that women accessing family planning services from Chitipa district hospital were not provided with information on amenorrhea resulting from using Depo- Provera. Hence, they expressed fear when they experienced the side effect. Participants stated that they were afraid of becoming infertile after using the family planning method, getting pregnant as well as amenorrhea itself. Their intention to discontinue using the method was largely associated with negative rumors, beliefs and misconceptions. The conclusion of the study is that there is need for midwives to provide information on amenorrhea resulting from Depo-Provera use. This will assist clients to understand that amenorrhea could occur as a side effect, and hence improve continued utilization of the method.

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Heck, Márcia. "Casas modernas cariocas [1930-1965]." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2005. http://hdl.handle.net/10183/5250.

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Esta dissertação visa traçar um panorama representativo das casas modernas cariocas dentro do quadro da arquitetura moderna brasileira de 1930 a 1965. Para tanto, utiliza-se da reunião catalográfica de 145 exemplares de autoria de arquitetos nascidos ou radicados no Rio de Janeiro, localizadas no estado do Rio ou eventualmente fora dele. Os objetos de estudo são apresentados cronologicamente em sete períodos, correspondentes à incubação (1930-35), à eclosão (1936-39), à emergência (1940- 45), à consolidação (1946-50), à hegemonia (1951-55), à mutação (1956-60) e ao conseqüente ocaso (1961-65) da arquitetura moderna brasileira. A constituição do panorama é feita sistematicamente sobre dados extraídos da documentação publicada nacional e internacionalmente, através de tabulações e fichamentos. A identificação dos exemplares permite, primeiramente, ampliar e formatar um conjunto disperso; num segundo momento, a leitura dos dados facilita a análise e gera comentários que buscam somar um enfoque qualitativo à coletânea. As verificações corroboram a validade atemporal da arquitetura moderna brasileira e apontam para a necessidade de abertura de colunas intermediárias de classificação, que contemplem os ‘caminhos do meio’ entre o figurativo e o abstrato, o particular e o universal, o vernáculo e o erudito, o tradicional e o moderno.

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Freire, Emanuel Di'Stefano Bezerra. "Estudo de dois impactos da política monetária sobre a execução financeira do Tesouro Nacional (julho de 1994 a dezembro de 1998)." reponame:Repositório Institucional do FGV, 1999. http://hdl.handle.net/10438/5250.

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Analisa o impacto da senhoriagem e da esterilização sobre o resultado do Banco Central e, por conseqüência, do Tesouro Nacional. Aborda também, o impacto geral da taxa de juros sobre o estoque da dívida mobiliária federal fora do Banco Central e caracteriza o Plano Real e a política monetária adotada no período.

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Sardinha, Daniela Abreu. "Xerostomia e hipofunção das glândulas salivares: fisiopatologia e enquadramento clínico." Master's thesis, [s.n.], 2013. http://hdl.handle.net/10284/5250.

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Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária
A saliva desempenha múltiplas funções e tem um papel vital na proteção da saúde dos tecidos moles e duros da cavidade oral. A xerostomia é a sensação subjetiva de boca seca, um sintoma que pode ou não estar acompanhado de hipossalivação, descrita como redução do fluxo salivar estimulado ou não estimulado. Os pacientes com redução do fluxo salivar apresentam maior risco de cáries, infeções fúngicas orais, dificuldades na deglutição e alteração do paladar. As principais causas da hipofunção das glândulas salivares e da xerostomia são doenças sistémicas e os medicamentos. O diagnóstico é baseado em métodos simples, como a medição do fluxo salivar estimulado e não estimulado. Sendo que o tratamento da xerostomia é essencialmente realizado tendo em conta a sua causa e é dividido em quatro categorias: prevenção, tratamento sintomático, estimulação local ou tópica e terapias sistémicas ou estimulação sistémica. Cada categoria será aplicada dependendo da função glandular. Quando há alguma preservação da estrutura da GS os estimulantes salivares (estimulação local ou sistémica) são o mais indicado. Quando as GS encontram-se irreversivelmente danificadas a opção é o tratamento paliativo.
Saliva has multiple functions and plays a vital role in protecting the health of hard and soft tissues of the oral cavity. Xerostomia is the subjective sensation of dry mouth, a symptom that may or may not be accompanied by hyposalivation, described as a reduction of unstimulated and stimulated salivary flow. Patients with reduced salivary flow are at increased risk for caries, oral fungal infections, swallowing problems and altered taste. The principal causes of salivary gland hypofunction and xerostomia are systemic diseases and drugs. The diagnosis is based on simple methods, as measuring both unstimulated and stimulated salivary flow rate. Treatment of xerostomia essentially is carried out in regard to the cause and is divided in four main categories: palliative or symptomatic stimulation, local and systemic stimulation and prevention of complications. Which category will be applied, depending on salivary glands function. In cases when there is still some residual salivary function it was shown that saliva stimulans (local or systemic stimulation) is more appropriate. When salivary glands are irreversible damaged palliative treatment is the best option.

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32

Kneifer, Christopher John. "A Comparison Study on Violent Video Games: Explained by the Gamers Themselves." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5250.

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This qualitative focus groups analysis examines the harmful effects of violent video games on emotions and behavior by comparing violent video game player's responses to that of non-violent video game players of the same age group. Research on the effects of video games has been done since the 70s, yet more research is needed to better understand the potentially harmful emotional and behavioral effects of playing violent games, especially from the gamers' perspectives. This thesis presents a qualitative analysis of data obtained from focus group sessions among undergraduate college students. Results of the analysis supports the presence as well as absence of violent video game effects, according to violent and non-violent video gamers' personal experiences and in their own words.

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Hight, Terry L. "Do the Rich Get Richer? A Meta-analysis of Methodological and Substantive Moderators of Couple Enrichment." VCU Scholars Compass, 2000. https://scholarscompass.vcu.edu/etd/5250.

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This study examined the effectiveness of couple enrichment using currently-accepted standards of meta-analytic research, including analysis based upon both ﬁxed-effects and random effects models. Ninety published and unpublished studies comparing enrichment groups to control groups were included in the analyses. The overall mean effect size (0.23) for couple enrichment was heterogeneous, positive, and signiﬁcantly different than 0. Mean effect sizes for both post-treatment and follow-up did not differ signiﬁcantly. Methodological and substantive moderator variables associated with publication date, publication source, program type, program length, latency of measurement, mode of measurement, measure type, measure/program congruence, design quality, and researcher allegiance were examined. Effect sizes were signiﬁcantly greater for observation measures, studies with higher methodological quality, and studies with higher levels of researcher allegiance. Only one moderator, date of publication, failed to be associated with effect size. Limitations of the study were discussed and implications for future research were outlined.

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34

Phillips, Anna. "Perspectives of Racism Among Offenders Post Incarceration." ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/5250.

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Racial segregation in California prisons is a primary means of maintaining control and safety for inmates and correctional staff, yet little is understood about how racial segregation in prison impacts reentry of offenders into the community. The research question examined in this study focused on how living in the racial segregation of a California State prison, for 2 years or more might influence African-American, White, and Latino men's ability to interact with other races in a culturally diverse community upon release. Using Donald Clemmer's theory of prisonization as the foundation, the purpose of this phenomenological study was to understand the experiences of men who lived in a racially segregated environment in prison regarding post-release reintegration. Specifically, their experiences with interacting in a culturally diverse environment after prison were examined to understand how behaviors and attitudes in prison were adapted by formerly incarcerated men in community life. A sample of 15 formerly incarcerated males were interviewed in response to posted fliers and community presentations. Collected data were analyzed between and among races for similar responses to the interview questions according to the Van Kaam method. Fourteen of the 15 participants reported that racial reintegration added challenges such as difficulty trusting and interacting with races other than their own post release, and additionally they stated they were grateful to return to a culturally diverse community. Positive social change stemming from this study include recommendations to prison leaders to introduce social skill building training into reintegration programming that supports former inmates to more effectively interact with diverse populations as they transition to community life.

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35

Creswell, Megan. "A Study Comparing Musical Abilities of Stutterers and Nonstutterers." PDXScholar, 1995. https://pdxscholar.library.pdx.edu/open_access_etds/5250.

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Rhythm is a feature of both music and speech that has been successfully used in the treatment of speech disorders, particularly stuttering, for many years. The successful use of rhythm in the treatment of dysf luencies of speech may be due to stutterers' perceptual deficiencies in music and rhythm abilities. Research supports the view that there are differences between stutterers and nonstutterers in timing and rhythmic capabilities. This study, therefore, sought to determine whether there was a difference between the perceptual musical abilities of stutterers versus nonstutterers as measured by the Seashore Measures of Musical Talents, Revised (1960). Data collected were from two groups of subjects consisting of 10 stutterers and 10 nonstutterers. Groups were matched according to age and gender. Subjects were examined using the Seashore, a test which measures levels of musical ability in the areas of pitch, time, timbre, rhythm, tonal memory and loudness. Subjects listened to recorded tones on a cassette tape player while marking their answers on IBM answer sheets. For example, in the pitch test, fifty pairs of tones on a cassette tape were presented. The subject determined whether the second tone presented was higher (H) or lower (L) than the first. A mark was made in either the column headed H or L. Each subtest proceeded in a similar manner. A total score of level of musical function was then determined from the scores of each subtest. Total scores and individual subtest scores were compared using the Wilcoxon Signed Ranks Test for Paired Observations (.05 level of significance) to determine whether there were overall differences between groups or differences between groups in specific areas. Results show stutterers scoring significantly lower in the rhythm subtest (P=.0077) and in total scores (P=.0244). Other significant differences were not found. These results might suggest that further support should be given to the study of actual treatment(s) using rhythmic concepts. Since no studies exist that investigate the theory that stutterers have perceptual rhythmic/timing deficiencies, studies such as this would provide normative data on musical abilities of stutterers, with emphasis on rhythm and timing abilities.

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Bougaardt, G. "An investigation into the application of artificial neural networks and cluster analysis in long-term load forecasting." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/5250.

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Bibliography: leaves 105-108.
This thesis investigates the problem of electric long-tenn load forecasting based on weather conditions (specifically temperature) and also investigates load forecasting by segmenting customers according to their pattern of use using clustering techniques in order to produce an effective long-tenn load forecast.

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Cooke, Linda. "John Barth the humanising power of narrative." Thesis, University of Ottawa (Canada), 1988. http://hdl.handle.net/10393/5250.

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38

Vinagre, Tânia. "Hox genes control the specification of global vertebral domains." Doctoral thesis, Universidade Nova de Lisboa, Instituto de Tecnologia Química e Biológica, 2011. http://hdl.handle.net/10362/5250.

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Dissertação apresentada para obtenção do grau de doutor em Biologia pelo Instituto de Tecnologia Química e Biológica da Universidade Nova de Lisboa
The development of an animal from embryo to adult is an actively regulated process, largely controlled through differential gene expression. Hox genes are key modulators of embryonic development. Among other functions, they are essential for patterning the body plan by conferring identity to segments along the anterior-posterior axis. In vertebrates, Hox genes can specify the identity of both individual vertebrae and global vertebral domains in the axial skeleton. Hox group 10 is responsible for the layout of the lumbar region by inhibiting rib formation, while Hox group 11 defines the sacral domain of the skeleton. It was previously thought that ribs were set out by default. Hence, it was suggested that another Hox gene would have to inhibit rib formation in the cervical domain, similarly to Hox group 10 in the caudal part of the skeleton. We produced mice bearing ribs in every vertebrae by overexpressing Hoxb6 in the PSM under the control of the Dll1 promoter, showing that the thoracic area is formed through the activity of Hox group 6 genes that specifically induce rib formation, and that the cervical domain is defined as the area that precedes Hox group 6 expression. In this study, we used our two Hox over-expression mouse models with complementary rib phenotypes to study the molecular mechanisms of rib development.(...)

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Cáceres, Plascencia Juana Marisol. "Estilos de vida en pacientes del programa de hipertensión arterial del Hospital I Carlos Alcántara Butterfield." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2016. https://hdl.handle.net/20.500.12672/5250.

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Presenta los resultados de una investigación de tipo cuantitativa y método descriptivo simple referente a los estilos de vida de los pacientes hipertensos de un programa del Hospital Carlos Alcántara aplicado entre los meses de abril a julio del 2014. La muestra está conformada por 45 pacientes que pertenecen al programa de hipertensión arterial, los datos son recolectados a través de un formulario tipo cuestionario sobre alimentación y actividad física, de los cuales el 71% de los pacientes refieren practicar estilos de vida no saludables y solo el 29% estilos de vida saludables. Propone la presentación de los resultados de la presente investigación a las autoridades del hospital con la finalidad que permita tener elementos suficientes para argumentar políticas para la mejora de la atención.
Trabajo académico

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Passos, Rodrigo dos. "Formação e a prática dos orientadores pedagógicos do Colégio Catarinense: impasses, possibilidades e desafios." Universidade do Vale do Rio dos Sinos, 2016. http://www.repositorio.jesuita.org.br/handle/UNISINOS/5250.

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O trabalho de orientar pedagogicamente professores, buscando uma melhor relação entre o ensinar e o aprender, tem requerido do profissional que atua nessa função uma grande demanda de trabalho que, muitas vezes, não lhe permite realizar sua função da maneira como efetivamente gostaria e percebe como essencial. Diante disso, o presente trabalho buscou identificar os desafios e as possibilidades enfrentadas no dia a dia por um grupo de orientadores pedagógicos que faz parte do Serviço de Orientação Pedagógica (SOP) do Colégio Catarinense, em Florianópolis, SC. Essa equipe é composta de cinco pessoas que orientam, em média, 20 professores cada um. O grupo de orientadores pedagógicos foi acompanhado em algumas reuniões e foram realizadas entrevistas individuais com a intenção de ouvi-los a fim de registrar e encaminhar sugestões de melhorias para o exercício profissional. Contribuíram para dar sustentação teórica a esta pesquisa: Alarcão, Arroyo, Freire, Hypólito, Luck, Morin, Nóvoa, Paro, Rios, Saviani e Tardif. A investigação constatou que os orientadores pedagógicos, mesmo não tendo formação inicial específica para o exercício da função, têm uma grande sensibilidade frente às demandas de seus professores, e percebem que há uma distância entre a prática de orientação pedagógica que exercem, na maioria das vezes, e aquela que desejam e é preconizada teoricamente. Reconhecem a especificidade de saberes para o exercício profissional e os limites de sua formação, procurando supri-los individualmente ou em iniciativas institucionais. Exercem ações que podem ser sintetizadas em: a) de apoio didático-pedagógico; b) de organização do trabalho pedagógico; c) de mediação entre diferente instâncias; e d) de impulsionador de projetos de ensino. Entretanto, as demandas burocráticas têm preenchido a maior parte do tempo dos orientadores, e a formação pedagógica, o cerne do trabalho, nem sempre tem sido possível na qualidade que almejam. Os professores confirmam a qualidade infraestrutural da instituição e apostam em seu potencial de abertura a mudanças. As leituras e as discussões empreendidas apontam que precisamos de um novo olhar sobre esse serviço no Colégio, aprimorando-o para que cada encontro entre professor e orientador seja um momento de estudo e reflexão partilhados acerca da prática pedagógica.
The job of pedagogical guidance has required the professionals who act in this role a great demand of work. Although it seeks a better relationship between teaching and learning, the great demand does not allow them to perform their function the way they would like to or realize as essential. Thus, the present study sought to identify the challenges and possibilities faced on a daily basis by a group of pedagogical advisors which is part of the Educational Guidance Service of Catarinense School, in Florianópolis, SC. This team consists of five people that drive an average of 20 teachers each. The group of pedagogical advisors was accompanied in some meetings and individual interviews were carried out with the intention of listening to them in order to register and submit suggestions for improvements to the professional practice . Alarcão, Arroyo, Freire, Hypólito, Luck, Morin, Nóvoa, Paro, Rios, Saviani e Tardif contributed to give theoretical support to this research. The investigation found that even though the pedagogical advisors did not have specific initial training to the exercise of the function, they have a great sensitivity to the demands of their teachers. They realize that there is a gap between the practice pedagogical tutoring and what they aim in theory. The advisors recognize the specificity of knowledge to professional practice and the limits of their training, trying to supply the teachers individually or in institutional initiatives. They also carry out actions which can be summarized in: a) didactic pedagogical support; b) pedagogical work organization; c) mediation between different instances; and d) project booster. However, the bureaucratic demands have filled most of the advisors time, and the pedagogical training quality they aim, which is the core of the work, has not always been possible to be achieved. Teachers confirm the infrastructural quality of the institution and bet on its potential openness to change. The readings and discussions undertaken show that we need a new perspective on this service in school, improving it so that every meeting between teacher and guidance counselor is a moment of study and shared reflection about the pedagogical practice.

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41

Jeong, Kwang Jo. "Analysing the effects of fiscal policy and assessing its sustainability." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5250/.

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This thesis presents three empirical analyses of the macroeconomic effects and sustainability of fiscal policy. Three key issues are examined: the transmission mechanism for fiscal policy shocks in Korea, the sustainability of government debt in three selected countries (Korea, the UK, and the US), and the effects of fiscal consolidation on macroeconomic activity. The main findings are as follows. First, government spending has a positive effect on the economy. Capital spending is likely to boost the economy more effectively than current spending. Second, there is a cointegrating relationship between the variables in Korea and the US, but not in the UK. That means fiscal policy in Korea and the US is sustainable, while fiscal policy in the UK is not. Third, fiscal consolidation is not likely to be expansionary in terms of GDP growth. The results also show that fiscal consolidation in time of high debt-to-GDP ratios, the spending-base, or high sovereign risk has fewer negative effects on economic growth than fiscal consolidation in time of low debt-to-GDP ratios, the tax-base, or low sovereign risk. The economic growth rate, government spending-based fiscal consolidation, low long-term interest rates, and higher sovereign risk have significant effects on reducing debt-to-GDP ratio.

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Santos, Jonathas Silva dos. "Insumos para a utilização do critério de teste baseado em erros para aplicações móveis." Universidade Federal do Amazonas, 2016. http://tede.ufam.edu.br/handle/tede/5250.

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CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
In the context of current computing, mobile platforms have been presented as one of the most growth platforms, and this is mainly by the increased popularity of mobile devices. Furthermore, such applications are becoming indispensable in the routine of their users, assuming often critical roles, due to the data they handle. In this scenario, ensuring the quality of such applications is a usual purpose in recent academic work. For this, the Software Engineering field provides methods, techniques, standards and activities that seek to ensure software quality in general. Such activities are named Verification and Validation (V&V), and Software Testing is inserted into this context. However, some activities need to be adapted on account of the characteristics involving the mobile platform. In this adaptation, the knowledge of possible failures can provide important information to supplies for utilization of testing activities, specifically to mobile applications. This thesis presents the definition of the fault model MOBPI-FM (Mobile Platform Independent - Fault Model) specific for mobile applications platform. This model was generated systematically by using the HAZOP technique (Hazard and Operability Study) and consists of three levels of use (Fault, error and defect). The fault level proposed in MOBPI-FM model was evaluated in relation to actual fault coverage through a feasibility study with 58 mobile applications in the Android platform. The results indicated that 86% of the defects were evaluated covered by the model
No contexto da computação atual, plataformas móveis têm se apresentado como uma das plataformas de maior crescimento, e isso se deve principalmente pelo aumento da popularidade dos dispositivos móveis. Com isso, tais aplicações estão se tornando indispensáveis na rotina dos seus usuários, assumindo muitas vezes papéis críticos, por conta dos dados que manipulam. Diante desse cenário, garantir a qualidade de tais aplicações é uma busca constante em trabalhos acadêmicos mais recentes. Para isso, a Engenharia de Software fornece métodos, técnicas, critérios e atividades que buscam garantir a qualidade de software de um modo geral. Tais atividades são denominadas Verificação e Validação (V&V), sendo que Teste de Software está inserido nesse contexto. Porém algumas atividades necessitam ser adaptadas, por conta das características que envolvem a plataforma móvel. No contexto dessa adaptação, o conhecimento prévio de possíveis falhas pode fornecer informações importantes para fornecer insumos para aplicação de atividades de teste especificamente para o contexto de aplicações móveis. Esta dissertação apresenta a definição do modelo de falhas MOBPI-FM (MOBile Platform Independent – Fault Model) específico para aplicações construídas para plataforma móvel. Esse modelo foi gerado de forma sistemática utilizando a técnica HAZOP (Hazard and Operability Study) e é composto por três níveis de utilização (Falha, Erro e Defeito). O nível de falhas proposto no modelo MOBPI-FM foi avaliado em relação a cobertura de falhas reais por meio de um estudo de viabilidade realizado com 58 aplicações móveis da plataforma Android. Os resultados indicaram que 86% das falhas avaliadas foram cobertas pelo modelo.

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43

Rubin, Paloma Menezes. "Análise do Elemento Transponível copia em Espécies de Drosophila." Universidade Federal de Santa Maria, 2008. http://repositorio.ufsm.br/handle/1/5250.

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Transposable elements (TEs) are segments of DNA that have the ability to move up and replicate themselves within the genome. The retrotransposon copia belongs to the superfamily copia and was first sequenced in D. melanogaster. We used in part of this work, which corresponded to a populational analysis of element copia in the genomes of species of the group willistoni, the portion of 5'LTR-URL for its importance as a regulatory sequence that can give us relevant phylogenetic information. Data in silico were added to the work which sought in the twelve genomes of Drosophila available the complete sequence of the element copia and the sequence of LTRs that surround the element. The wide distribution of element copia in the genus Drosophila suggests the occurrence of several cases of horizontal transfer, one of them between D. melanogaster and D. willistoni. To investigate this case we amplify by PCR the region 5'LTR-URL of two strains of D. willistoni, which showed a 95 to 98% similarity with the element copia, but the same homology was not detected in the search made by Southern blot. Some assumptions can be considered to explain these results: the copia polymorphism in the host genome, a small number of copies in a few individuals of the population or the sequence of the copia element could be in a vector. But the data are still inconclusive. The results of the searches showed a wide distribution of element copia in the genome, despite uneven, and some inconsistencies were found related to the phylogenetic analysis of the host species. Of the species examined, only three of subgenus Sophophora and two of subgenus Drosophila did not show sequences related to copia element.
Elementos transponíveis (TEs) são segmentos de DNA que têm a capacidade de mover-se e replicar-se dentro dos genomas. O retrotransposon copia pertence à superfamília copia e foi primeiramente seqüenciado em D. melanogaster. Abordamos em parte deste trabalho uma busca por seqüências relacionadas ao elemento copia nos genomas de diversas linhagens de espécies do grupo willistoni. A região estudada corresponde a porção da 5 LTR-URL, escolhida pela sua importância como seqüência regulatória e que pode nos fornecer informações filogenéticas relevantes. Dados in silico foram adicionados ao trabalho onde buscamos nos doze genomas de Drosophila disponíveis a seqüência completa de copia e a seqüência das LTRs que flanqueiam o elemento. A ampla distribuição do elemento copia no gênero Drosophila sugere indícios da ocorrência de vários casos de transferência horizontal, um deles entre D. melanogaster e D. willistoni. Para investigarmos esse caso amplificamos por PCR a região 5 LTR-URL de duas linhagens de D. willistoni, que apresentaram de 95 a 98% de similaridade com o elemento copia, porém a mesma homologia não foi detectada em rastreamentos por Southern Blot. Algumas hipóteses podem ser levadas em consideração para explicarmos tais resultados: o polimorfismo de copia nos genomas hospedeiros, pequeno número de cópias em poucos indivíduos da população ou a seqüência do elemento copia estar em um vetor. No momento não podemos excluir nenhuma dessas hipóteses. Os resultados das buscas nos genomas seqüenciados mostraram uma ampla distribuição do elemento copia, porém desigual, e algumas incongruências foram encontradas com relação à análise filogenética das espécies hospedeiras. Das espécies analisada em somente três do subgênero Sophophora e duas do subgênero Drosophila não foram encontradas seqüências relacionadas a copia.

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Wanderley, Fábio da Silva. "Efeito de estímulos vibratórios aplicados na região plantar sobre o equilíbrio corporal de idosas." Universidade Federal de São Carlos, 2009. https://repositorio.ufscar.br/handle/ufscar/5250.

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Objective: To determine the effect of vibration stimuli with 100 Hz frequency, applied to the plantar region, the body balance in women aged less than 60 years. Method: We selected 30 women aged less than 60 years with lack of static balance measured by the test support Unipodal with eyes open. The participants were randomly divided into an experimental group and a control group. All subjects were evaluated by four additional tests: the test Unipodal support with eyes closed, the Time Up and Go test, the Functional Reach test adapted, and Static Posturography evaluated using the force platform. A study was conducted blind, and the evaluators did not know to which group subjects were. The subjects in the experimental group received vibration therapy applied directly in the plant with 100 Hz frequency and oscillation of 2 mm. We performed 24 sessions of vibration stimuli, applied by the same physiotherapist. We analyzed the changes of the average number of individuals by two-way ANOVA with Tukey test as post-hoc to the data showing normal, and for not presenting normality test was used to Friedman. The comparison of the averages of the groups, experimental and control, was done using the one-way ANOVA for data presented normal and Kruskal-Wallis test for those who did not show normality. Results: We found significant differences between experimental and control groups in the third assessment of the Functional Reach test adapted in the speed of oscillation of the center of anterior-posterior pressure with the eyes open and closed and the area of Oscillation of the center of pressure with eyes closed. In examining the three evaluations of the intervention group was found to improve body balance in the Functional Reach test adapted in the speed of oscillation of the center of anterior-posterior pressure with the eyes open and closed and the area of Oscillation of the center of pressure with eyes closed. In the control group there was no statistically significant difference in any of the tests. Conclusion: The vibration stimuli applied to the plantar region, with 100 Hz frequency, showed beneficial effects on body balance in women over 60 years, being more effective in postural control of anteriorposterior axis and during the deprivation of vision.
Objetivo: verificar o efeito dos estímulos vibratórios com 100 Hz de freqüência, aplicados na região plantar, sobre o equilíbrio corporal de mulheres com idade igual ou superior a 60 anos. Método: Foram selecionadas 30 mulheres com idade igual ou superior a 60 anos com déficit de equilíbrio estático avaliado pelo teste de Apoio Unipodal com os olhos abertos. As participantes foram divididas aleatoriamente em grupo Experimental e grupo Controle. Todos os indivíduos foram avaliados por mais quatro testes: o teste de Apoio Unipodal com os olhos fechados; o Time Up and Go test; o teste de Alcance Funcional adaptado; e a Posturografia Estática avaliada por meio da plataforma de força. Foi realizado um estudo cego, sendo que os avaliadores não sabiam em que grupo os indivíduos estavam. Os sujeitos do grupo Experimental receberam terapia vibratória aplicada diretamente na região plantar com 100 Hz de freqüência e oscilação de 2 mm. Foram realizadas 24 sessões de estímulos vibratórios, aplicados pelo mesmo fisioterapeuta. Foram analisadas as evoluções das médias dos indivíduos pelo two-way ANOVA com o teste de Tukey como post-hoc para os dados que apresentavam normalidade; e para os que não apresentavam normalidade foi utilizado o teste de Friedman. A comparação das médias dos grupos, experimental e controle, foi realizada por meio do one-way ANOVA para os dados que apresentaram normalidade e do teste de Kruskal-Wallis para os que não apresentaram normalidade. Resultados: Foram encontradas diferenças significativas entre os grupos Experimental e Controle na terceira avaliação do teste de Alcance Funcional adaptado, na Velocidade de Oscilação do centro de pressão ântero-posterior com os olhos abertos e fechados e na Área de Oscilação do centro de pressão com os olhos fechados. Ao analisar as três avaliações do grupo de Experimental foi detectada melhoria do equilíbrio corporal no teste de Alcance Funcional adaptado, na Velocidade de Oscilação do centro de pressão ântero-posterior com os olhos abertos e fechados e na Área de Oscilação do centro de pressão com os olhos fechados. No grupo controle não houve diferença estatisticamente significativa em nenhum dos testes aplicados. Conclusão: Os estímulos vibratórios aplicados na região plantar, com 100 Hz de freqüência, apresentaram efeitos benéficos no equilíbrio corporal de mulheres acima de 60 anos, sendo mais efetivo no controle postural do eixo ântero-posterior e durante a privação da visão.

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Cáceres, Plascencia Juana Marisol, and Plascencia Juana Marisol Cáceres. "Estilos de vida en pacientes del programa de hipertensión arterial del Hospital I Carlos Alcántara Butterfield." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2016. http://cybertesis.unmsm.edu.pe/handle/cybertesis/5250.

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Presenta los resultados de una investigación de tipo cuantitativa y método descriptivo simple referente a los estilos de vida de los pacientes hipertensos de un programa del Hospital Carlos Alcántara aplicado entre los meses de abril a julio del 2014. La muestra está conformada por 45 pacientes que pertenecen al programa de hipertensión arterial, los datos son recolectados a través de un formulario tipo cuestionario sobre alimentación y actividad física, de los cuales el 71% de los pacientes refieren practicar estilos de vida no saludables y solo el 29% estilos de vida saludables. Propone la presentación de los resultados de la presente investigación a las autoridades del hospital con la finalidad que permita tener elementos suficientes para argumentar políticas para la mejora de la atención.
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46

Paria, Christ Jesus Barriga. "Avaliação do efeito de escala no estudo da resistência ao cisalhamento de um estéril de minério de ferro." reponame:Repositório Institucional da UFOP, 2015. http://www.repositorio.ufop.br/handle/123456789/5250.

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Programa de Pós-Graduação em Geotecnia. Núcleo de Geotecnia, Escola de Minas, Universidade Federal de Ouro Preto.
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Pilhas de estéril em mineração são formadas pela disposição de material estéril, conforme a norma, para garantir a estabilidade em longo prazo. Geralmente, na fase de projeto os parâmetros de resistência obtidos em laboratório correspondem a faixas granulométricas diferentes daquelas do estéril disposto nas pilhas. Portanto, faz-se necessário determinar o efeito de escala granulométrica nos parâmetros de resistência. O objetivo principal desta dissertação é estudar o comportamento do estéril em função do efeito de escala granulométrica e aferir as variações nas suas propriedades geotécnicas. Durante o programa experimental foram utilizadas amostras obtidas a partir de ensaios de caracterização física adequados às normas vigentes. A metodologia adotada baseou-se no comportamento de um estéril submetido ao cisalhamento direto e sua relação com os parâmetros de resistência obtidos para várias faixas granulométricas. Com base nesta investigação foram obtidas correlações da granulometria com uma compacidade relativa empírica, que ressaltam a influência destes parâmetros no valor do ângulo de atrito deste estéril. A concordância e a reprodutibilidade dos resultados para as amostras com granulometrias variadas, comprovam e aferem a qualidade das moldagens propostas e realizadas. Não obstante, é evidente que uma reavaliação do diâmetro máximo dos grãos a ser utilizado para uma determinada altura do CP é necessário, o efeito do tamanho do grão durante o cisalhamento foi observado, cujas amostras apresentaram expansibilidade durante o cisalhamento. O efeito de escala na determinação do ângulo de atrito do estéril foi evidente, a dependência entre a granulometria das amostras de estéril e a resistência ao cisalhamento do estéril foi percebida pela tendência do decréscimo do ângulo de atrito com a redução do diâmetro das suas partículas. Ressalta-se que para pilhas dimensionadas a partir de ensaios realizados com granulometrias reduzidas quando comparadas àquelas presentes em campo o projeto caminha no sentido da segurança, pois se projetam estruturas baseadas em parâmetros conservadores. Não obstante, a avaliação do efeito de escala pode colaborar para minimização das áreas de disposição e, assim, em impactos ambientais consideravelmente menores. ____________________________________________________________________________
ABSTRACT: Waste rock dumps in a mining, are constructed by the disposal of waste rock material, as the standard to ensure, especially, the stability of the pile in the long term. Generally, in the design phase the strength parameters obtained in the laboratory correspond to different particle sizes of those sterile disposed. Therefore, it is necessary to determine the effect of particle size range in strength parameters. The main objective of this dissertation is to study the waste rock behavior as a function of particle size scale effect and measure the variations in their geotechnical properties. In implementing the experimental program samples were used obtained from physical characterization tests appropriate to current standards. The methodology adopted was based on the behavior of a waste rock sample subjected to direct shear and its relation to the strength parameters obtained for various particle sizes. Based on this research were obtained from particle size correlations with relative compactness known empirically that highlight the influence of these parameters on the value of the friction angle of the waste rock. The execution of shear tests for determining the resistance parameters, showed a consistent tool when applied to granular waste rock. The agreement and the reproducibility of the results for the different specimen with different grain sizes attest and certify the quality of impressions and proposals made. However, it is clear that a revaluation of the maximum grain diameter to be used for a given height of the specimen is required, the effect of grain size during the shear was observed, whose specimen showed expansion during shearing. The scale effect in determining the waste rock friction angle was evident the dependence between particle size of the waste rock specimen and waste rock shear resistance was realized by decreasing the tendency of the friction angle with the reduced diameter of its particles. It is noteworthy that for waste rock dumps designed considering reduced particle size compared to those particles in the field present the project moves towards safety because protrude in conservative parameters based structures. However, the scale effect evaluation can contribute to the minimization of disposal sites and, therefore, in significantly less environmental impact.

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Penteado, Eliane Villas Bôas de Freitas. "Tuberculose no ambiente hospitalar: uma questäo da saúde do trabalhador." reponame:Repositório Institucional da FIOCRUZ, 1999. https://www.arca.fiocruz.br/handle/icict/5250.

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Aborda as conseqüências sobre a saúde dos profissionais de enfermagem e medicina decorrentes do distanciamento entre o trabalho prescrito e o trabalho real. Analisa as dificuldades vivenciadas por estes profissionais no âmbito hospitalar frente ao recrudescimento da tuberculose e suas relaçoes com a organizaçao e o processo de trabalho. Trata-se de um estudo de caso, desenvolvido no serviço de tisiopneumologia de um hospital público universitário, localizado no Município do Rio de Janeiro. O referencial teórico-metodológico baseia-se em conceitos da saúde do trabalhador e da ergonomia contemporânea. O foco de discussao centra-se nas situaçoes de exposiçao ocupacional ao agente etiologico da tuberculose. A abordagem do campo orientou-se pela metodologia da Análise Ergonômica do Trabalho (AET), com ênfase na análise de demanda e da atividade. Observa-se que as condiçoes do ambiente de trabalho possuem determinantes relacionados aos aspectos organizacionais. A unidade de internaçao e o setor de broncoscopia foram identificados como as principais áreas do serviço que oferecem maior risco de exposiçao ocupacional ao Mycobacterium tuberculosis. Dentre os casos de tuberculose ocorridos em profissionais de saúde do hospital, estas foram as áreas do serviço que concentraram maior número de casos. Verificou-se que no serviço de tisiopneumologia as condiçoes do ambiente e a forma pela qual o serviço está organizado constituem os principais condicionantes das situaçoes de exposiçao ocupacional ao M. tuberculosis. Considera-se premente a necessidade de reestruturaçao tanto das instalaçoes físicas, como dos procedimentos assistenciais. No que diz respeito à estrutura física, ressalta-se a necessidade de maior número de áreas de isolamento. Quanto aos aspectos assistenciais, destaca-se a necessidade dos profissionais envolvidos tornarem-se mais sensíveis à problemática da tuberculose hospitalar, no sentido de agilizar a identificaçao de pacientes bacilíferos e ainstituir medidas de proteçao nos casos suspeitos até confirmaçao laboratorial.

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ANDRADE, R. C. "Samambaias e Licófitas da Floresta Atlântica do Espírito Santo, Sudeste do Brasil: similaridade e variação florística." Universidade Federal do Espírito Santo, 2016. http://repositorio.ufes.br/handle/10/5250.

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Made available in DSpace on 2016-08-29T15:38:25Z (GMT). No. of bitstreams: 1 tese_9680_Dissertacao Rafael Coelho.pdf: 1142318 bytes, checksum: fcab0e58556b37bbb8cb0df71beecf51 (MD5) Previous issue date: 2016-03-31
(SAMAMBAIAS E LICÓFITAS EM TRÊS FRAGMENTOS DE FLORESTA DE TABULEIRO NO NORTE DO ESPÍRITO SANTO: COMPOSIÇÃO E RELAÇÕES FLORÍSTICAS). Apresentamos as espécies de samambaias e licófitas de três áreas de Floresta Atlântica de fisionomia de florestas de Tabuleiro, no norte do estado do Espírito Santo e sua relação florística com outras fisionomias deste bioma neste Estado. Registramos 57 espécies, distribuídas em 35 gêneros contidos em 18 famílias nas áreas da Reserva Biológica do Córrego Grande, Floresta Nacional do Rio Preto e Reserva Biológica do Córrego do Veado. As famílias mais representativas foram Pteridaceae (17 spp.) e Polypodiaceae (8 spp.). Dentro os gêneros, Adiantum apresentou maior riqueza específica (8 spp.). A flora de samambaias e licófitas difere significativam ente entre as diferentes fisionomias florestais da Floresta Atlântica no estado do Espírito Santo, que apresentam espécies indicadoras para cada uma, assim como espécies que ocorrem preferencialmente em determinadas fisionomias. A análise de correspondência e a análise de agrupamentos utilizando a distância relativa de Sørensen indicaram a existência de quatro grupos florísticos, associados aos tipos fisionômicos da Floresta Atlântica que, por sua vez, estão relacionados ao gradiente altitudinal. Ocorre maior similaridade da flora dentro da mesma fisionomia, se destacando com maior consistência e homogeneidade florística as regiões abaixo dos 300 m de altitude, principalmente as florestas de Tabuleiro do norte do Estado.

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SILVA, Ana Cristina Goncalves Castro. "Metodologia para simulação numérica de sistemas de aquecimento de água utilizando coletores solares planos." Universidade Federal de Pernambuco, 2008. https://repositorio.ufpe.br/handle/123456789/5250.

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Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco
Os sistemas de aquecimento solar de água têm sido bastante utilizados para uso doméstico em residências, visto que, seu uso reduz custos de aquecimento de água e ainda é uma fonte renovável de energia. Todo coletor solar precisa ser caracterizado através de uma equação de desempenho. Para tal, deve ser analisado, numérica ou experimentalmente para que seja obtida sua curva característica de eficiência em função da temperatura de entrada e da radiação solar incidente no coletor. Neste trabalho foi desenvolvida uma ferramenta para simulação numérica de sistemas de aquecimento de água utilizando energia solar, baseado nos modelos apresentados na literatura. A metodologia para simulação apresentada neste trabalho permite calcular a radiação solar total incidente no coletor, levando em consideração as características da cobertura, a simulação do desempenho do coletor. O modelo matemático é composto das equações de balanço de energia para o coletor e equações complementares, como a equação da lei de resfriamento de Newton, as correlações para os coeficientes de convecção, e uma equação para o cálculo da vazão baseado na circulação natural devido ao efeito termo-sifão. A solução do sistema de equações foi obtida através do método de Newton-Raphson para funções de várias variáveis. O modelo do coletor foi validado com dados da literatura. Pelos resultados obtidos, pode-se observar que este se constitui numa ferramenta muito interessante na simulação de sistemas de aquecimento solar que utilizam coletores solares do tipo placa plana

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Freitas, Augusto dos Santos. "Estudo de sistemas magnéticos desordenados via modelos clássicos de spins por meio de técnicas analíticas." Universidade Federal de Sergipe, 2014. https://ri.ufs.br/handle/riufs/5250.

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In this work, we study the magnetic properties of classical spin models, namely spin-2 Ising model with site dilution and mixed-bond spin 1/2 Ising model by means of the Effective Field Theory (EFT), with applications to describe of the magnetic properties of Fe-Al, Fe-Mn and Fe-Mn-Al alloys. In here, we obtain the van der Waerden identity for a generic spin value S, for example, to be used in the description of spin-2 Ising model and expressions were used to phenomenological description of the dependence of exchange interaction on the concentration of aluminum and manganese atoms. Behavior of magnetization versus temperature, critical temperature as a function of the concentration of aluminum atoms and exchange interaction as a function of the concentration of aluminum atoms to the Fe-Al alloys were studied. Furthermore, this model allows for a more accurate determination of the critical values qc and Tc for q = 0. For the Fe-Mn alloys were described the M(T), zero field susceptibility as a function of temperature, critical temperature versus manganese concentration and average hyperfine field as a function of the manganese concentration. For the Fe-Mn-Al alloys, the magnetization as a function of temperature, magnetization as a function of the manganese concentration, critical temperature versus iron concentration and average hyperfine field as a function of the aluminum concentration were studied. It is shown that the EFT technique is not only a robust technique for the description of the thermodynamic properties of classical spin models and can also be widely applied to obtain phase diagrams of real magnetic systems, with the advantage of reduced computational cost compared to the other techniques. All phase diagrams described in this work were obtained through the numerical solution of the equations arising from the approximations made by the EFT approach. Finally, prospects of use of the other models are described, as well as other analytical techniques to the description of frustrated magnetic systems.
Neste trabalho, são estudadas as propriedades magnéticas de modelos clássicos de spins, a saber os modelos de Ising de spin 2 com diluição por sítios e de spin 1/2 com interações mistas, por meio da Técnica do Operador Diferencial (DOT), com aplicações à descrição das propriedades magnéticas de ligas Fe-Al, Fe-Mn e Fe-Mn-Al. Para tanto, foi descrito um método simples para obtenção da identidade de van der Waerden para um valor genérico de spin $S$, por exemplo, para ser utilizada na descrição do modelo de Ising de spin 2, e foram utilizadas expressões fenomenológicas para a descrição da dependência da interação de troca relativamente à concentração de átomos de alumínio e manganês para o estudo das propriedades das ligas consideradas. Os resultados obtidos indicam que os modelos clássicos utilizados, aliados à Técnica do Operador Diferencial, são alternativas viáveis para a descrição física de sistemas magnéticos reais. Diagramas de magnetização {it versus} temperatura, temperatura crítica como função da concentração de átomos de alumínio e interação de troca como função da concentração de átomos de alumínio, para as ligas Fe-Al, foram estudados. No caso do diagrama de magnetização como função da temperatura, os resultados para o modelo de spin 2 com diluição por sítios são qualitativamente idênticos aos do modelo de Ising de spin 1/2, com a diferença de que os valores obtidos para a magnetização por sítio no estado fundamental diferem daqueles obtidos para o modelo de Ising de dois estados. Além disso, tal modelo permite uma determinação mais precisa dos valores da concentração crítica de átomos de alumínio, $q_c$, acima da qual a magnetização espontânea vai a zero em $T>0$, e da temperatura crítica $T_c$ para $q=0$. Para as ligas Fe-Mn, foram descritos os diagramas magnetização {it versus} temperatura, susceptibilidade a campo nulo como função da temperatura, temperatura crítica {it versus} concentração de átomos de manganês e campo hiperfino médio como função da concentração de átomos de manganês. A comparação entre os resultados teóricos e experimentais demonstra boa concordância com o modelo utilizado. No caso das ligas Fe-Mn-Al, foram estudados os diagramas de magnetização como função da temperatura, magnetização {it versus} concentração de átomos de alumínio, magnetização como função da concentração de átomos de manganês, temperatura crítica {it versus} concentração de átomos de ferro e campo hiperfino médio como função da concentração de átomos de alumínio. A concordância teoria-experimento é excelente e demonstra a viabilidade dos modelos utilizados para a descrição das propriedades magnéticas de tais ligas. Neste trabalho, mostra-se que a Técnica do Operador Diferencial não é somente uma técnica robusta para a descrição das propriedades termodinâmicas de modelos clássicos de spins como também pode ser amplamente aplicada para obtenção de diagramas de fase de sistemas magnéticos reais, com grande vantagem de custo computacional em comparação com outras técnicas. Tal técnica também pode ser, como discutido neste trabalho, interpretada como caso particular de outra mais geral: o Método Variacional. Todos os diagramas de fase aqui descritos foram obtidos por meio da resolução numérica das equações oriundas das aproximações feitas por meio da Técnica do Operador Diferencial. A utilização do Método Variacional em sua aproximação de campo médio, aplicada ao modelo XY clássico em duas dimensões, no estudo de sistemas magnéticos frustrados, tais como as jarositas, surge como perspectiva de trabalhos futuros.

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