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Tarkhanov, Nikolai. "A fixed point formula in one complex variable." Universität Potsdam, 2003. http://opus.kobv.de/ubp/volltexte/2008/2649/.
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We show a Lefschetz fixed point formula for holomorphic functions in a bounded domain D with smooth boundary in the complex plane. To introduce the Lefschetz number for a holomorphic map of D, we make use of the Bergman kernal of this domain. The Lefschetz number is proved to be the sum of usual contributions of fixed points of the map in D and contributions of boundary fixed points, these latter being different for attracting and repulsing fixed points.
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Fuller, Amanda Jane. "The aerodynamics of Formula One car cooling ducts." Thesis, University of Cambridge, 2004. https://www.repository.cam.ac.uk/handle/1810/265465.
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Formula One teams expend a large amount of effort optimising the aerodynamics of the exterior of the cars. However, there is comparatively little understanding of the mechanisms governing the flow through the sidepod ducts. These contain the heat exchang,ers for cooling the engine and gearbox. The aim of this thesis is to investigate features of the flow through the sidepod ducts, to provide a base of understanding from which further optimisation can be undertaken. When designing the sidepod ducts and the heat exchangers, the aim is to provide the required cooling rate, whilst minimising weight, centre of gravity and incurring the smallest possible aerodynamic penalty. An idealised lD model of the flow through a sidepod is presented and used to assess which geometric features have the largest effect on duct performance. A numerical investigation of the effect of a non-uniform flow distribution through a heat exchanger is also undertaken. Experiments are conducted to quantify the loss of stagnation pressure associated with inclining a radiator within a duct. Inclination loss is divided into incidence lo~s and loss due to the duct shaping immediately downstream of the radiator. An actuator-disc type model of the radiator performance is added to one of the in-house CFD codes. This modified code is used to carry out further investigation into the effects of shaping the downstream duct. A study of the use of metal or graphite foams in a Formula One heat exchanger is performed. It is shown that a foam radiator could only deliver comparable performance to the current louvered fin radiator if it had a much larger volume. It is recommended that no further investigative work is conducted into the use of such foam heat exchangers. The components of this investigation are drawn together to provide some design recommendations for the future optimisation of sidepod ducts. These include the shaping of the inlet duct in order to reduce incidence losses and the shaping of the downstream duct immediately adjacent to the heat exchangers in order to minimise any detrimental flow interactions.
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Morgan, Claire Elizabeth. "Unsteady vortex interactions related to a Formula One car front wing and wheel." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608608.
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Font, Carlos Alejandro. "Feasibility of helically stiffened construction for a formula racing car structural shell." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-08222009-040305/.
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Johns, Timothy Andrew. "The effect of cognitive workload on a racing driver's steering and speed control." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.707978.
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Dow, Kirsten T. "Manufacturing speed, a factory for the design of the Formula One race car." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ42328.pdf.
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Jones, Charles W., Kevin K. Byon, and Haiyan Hung. "Service Quality, Perceived Value, and Fan Engagement: Case of Shanghai Formula One Racing." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/5565.
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The purpose of this study is to examine the influence of controllable service quality factors as firm-based antecedents to two dimensions of customer engagement behavior among Formula One racing spectators. This study uses the theory of customer engagement (van Doorn et al., 2010) as a guiding framework and applies Bettencourt’s (1997) model of customer voluntary performance (CVP) to examine how perceptions of ancillary services and value can prompt management cooperation and prosocial behavior among spectators of a recurring mega sport event. Findings suggest that spectator interactions with event personnel and the physical environment can positively impact consumer perceptions of value and lead to greater fan engagement. Event organizers should focus management and marketing efforts on the utilitarian value (price/value for money) associated with attending a mega event and promote physical environment factors that can enhance the overall event experience.
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Summ, Benjamin [Verfasser], Michael Akademischer Betreuer] Krämer, and Robert V. [Akademischer Betreuer] [Harlander. "One formula to match them all : The bispinor universal one-loop effective action / Benjamin Summ ; Michael Krämer, Robert V. Harlander." Aachen : Universitätsbibliothek der RWTH Aachen, 2020. http://d-nb.info/1229213929/34.
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Freiman, Viktor, and Danis Michaud. "One mathematical formula in the science textbook: looking into innovative potential of interdisciplinary mathematics teaching." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-79834.
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Our paper presents some preliminary observation from a collaborative exploratory study linking mathematics, science and reading within a technology enhanced problem-based learning scenario conducted at one French Canadian Elementary and Middle School. Presented in a form of dialogue between teacher and researcher, our findings give some meaningful insight in how an
innovative mathematics teaching can be developed and implemented using a real-world problem solving. Instead of a traditional presentation of material about lighting up homes, participating
mathematics, science and French teachers were working collaboratively with the ICT integration mentor and two university professors helping students investigate a problem from various
perspectives using a variety of cognitive and metacognitive strategies, discussing and sharing the finding with peers and presenting them to a larger audience using media tools. Our preliminary results may prompt further investigation of how innovation in teaching and learning can help students become better critical thinkers and scientifically empowered citizens.
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Evans, Claire Anne. "The media representation of Formula One as 'spectacle' : constructing sport as a live mediatised event." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/44837/.
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Using data from the 2008 Formula One motor racing World Championship, this thesis theorises live, televised sports events as discursively constructed "spectacles". The two key aims of the study are; (1) to contribute to our understanding of the organising principles and broadcast values in televisual representations of sports; and (2) to demonstrate how "spectacle‟ is created as a textual accomplishment. Data includes verbal commentaries, interviews, video footage, and onscreen graphics. The analysis is primarily informed by the notion of the „activity types‟ concept (Levinson, 1979), "recontextualisation‟ (Linell, 1998), and follows broadly the principles of grounded theory (Strauss and Corbin, 1998) and multimodal discourse analysis (Kress and van Leeuwen, 2006; Machin, 2007). The broadcasts are shown to be constructed as a sports-magazine that consists of a variety of mediatised activities and the study examines the mediatised event in relation to the organising principles of these activities. The study also explores three intrinsic elements found in live televised broadcasts, namely "liveness‟, "domain‟ and "bimodality‟. These refer to the interplay between the „live‟ and "non-live‟ segments of the coverage; shifts across the "physical‟ and "mediatised‟ domains; and the relationship between the "visual‟ and "verbal‟ tracks respectively. Overall the thesis demonstrates how the sports-magazine format allows the programmes to introduce thematic diversity, while retaining coherence. Furthermore, the centrality of liveness is found to be problematic in the broadcasts due to live motor sport‟s potential to turn into tragedy, should a life-threatening or fatal crash occur. However, the analysis reveals that the broadcasters manage moments of great tension by foregrounding the notion of "safe-danger‟ throughout the programmes, and when an accident does take place; they use a number of reporting strategies to compensate for the lack of information during the live event.
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Nichols, Rachel. "Material characterisation, testing, and modelling of finite element analysis of impact structures." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/10425.
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Formula One race cars have to pass rigorous safety tests before they are
allowed on track. This type of testing has been in place for years but the
requirements for testing are continually increasing in order to reduce the
amount of risk to the drivers’ safety during a race. The number of structures that
need to be made and tested can quickly make this process an expensive one.
Additionally, it is necessary to pass the mandated tests within a reasonable
amount of time so as not to have an impact on the development on the rest of
the car. There is a desire to reduce the number of structures needed for testing
through finite element analysis (FEA), and as such, to reduce the time needed
to pass the safety tests. FEA of laminated composites can be complex and is a
balance between accuracy and the time it takes to find a solution.
The current project looks into increasing understanding of the requirements for
material characterisation, experimental impact testing, and explicit simulation of
a carbon fibre fabric pre-impregnated with epoxy resin. Mercedes-Benz Grand
Prix (MGP) Formula One Team has provided a pre-preg material for evaluation.
Material experiments were performed per the American Society for Materials
and Testing (ASTM) in order to find the tensile modulus, tensile strength,
Poisson’s ratio, compressive strength, shear modulus, and shear strength of the
material. Nine tubes were manufactured at MGP and tested in the drop tower at
the Cranfield Impact Centre (CIC) ... [cont.].
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Andersson, Linus, and Thomas Norrmalm. "Finding the formula for sustainable ICT : Lessons from the One Laptop per Child project in Rwanda." Thesis, Uppsala University, Department of Social and Economic Geography, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-119636.
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This thesis identifies threats to, and strengths in, the One Laptop per Child (OLPC) deployment in East African developing country Rwanda, and discusses what effect these characteristics may have on the long-term sustainability of the project. The main data collection method used is interviews, performed during a two month field study in the Rwandan capital of Kigali. By using a framework based in the field of technology transfer, a comprehensive picture of the project is presented, covering the whole process from early decision making and acquisition to the potential assimilation and development of the technology. The most important strength in the OLPC project has proven to be a strong will and commitment of the local organization as well as the country’s government to see it through. A well-adapted organization of support and technical assistance has also proven to work well so far. However, as the project increase in size over the next few years, several threats are also identified. These threats include a lack of financial means and skilled personnel, strong technical dependency on the OLPC organization and insufficient plans for the future expansion. We argue that the project would become more sustainable if expansions were to cease and a larger focus was put on securing the current deployments.
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Capparelli, R. Cary. "The World Formula One Championship and North America : the development of a globalized industrial sports complex?" Thesis, Birkbeck (University of London), 2016. http://bbktheses.da.ulcc.ac.uk/212/.
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This research seeks to recognize the World Formula One Championship as a global industrial sports complex through both its direct and indirect connections with North America. The study analyses the visibly linked and imperceptible separate commercial, cultural, political, and technological inputs from data retrieved from several accepted disciplines that can be prejudiced based on the sport’s respective nationalism. The study examines the entangled but corresponding economic and social engines that constitute the global framework of the World Formula One Championship. It does this by examining those commercial, cultural, political, and technological dimensions that form this autonomous industrial sports complex. This thesis presents research that scrutinizes how the World Formula One Championship cannot be understood as strictly a European enterprise and discovers intricate global relationships, particularly North American contributions, which are often disregarded, despite its historical existence on the continent and the more recent presence of the sport in the United States. These connections include a vast array of shared relationships that reveals how the World Formula One Championship is a globalized and evolving industrial sports complex of its own significance. Competition from other major league sports, lack of media coverage, and a small, isolated audience has caused the World Formula One Championship to be misunderstood in much of North America. The verified associations that materialize in this study demonstrate its importance and influence as an all-encompassing business and worldwide sport, in fact, one of three Mega Sports.
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Gordon, Brett Ryan. "Behind the Visor: A Qualitative Exploration of the Psychological Skills of Formula One Race Car Drivers." Master's thesis, Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/315738.
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KinesiologyM.S.
This qualitative study examined the psychological demands of Formula One Racing, and the psychological skills former Formula One drivers utilized to meet those demands. The participants were nine former drivers, from six different countries, who have competed in at least one Formula One World Drivers Championship grand prix. The qualitative data were gathered using a semi-structured interview framework, developed by the researcher, to explore the psychological skills established from other validated psychological skills questionnaires, such as the Test of Performance Strategies, (Thomas, Murphy, & Hardy, 1999). Eight of the interviews were done via Skype, and one interview was performed in person. The interviews were transcribed verbatim, and then sent to the participants to make any edits or corrections. Once the transcriptions were approved, the data were coded by the researcher using constant comparative methods as described in Charmaz (2006). Three phases of coding resulted in four themes and 14 sub-themes. The themes that emerged include: (1) Applied Sport Psychology in Formula One, (2) Psychological Skills, (3) Uncontrollable Aspects of Competition, (4) Career Components. Drivers used various psychological skills in a focused effort to aid their performance. Drivers discussed the important role psychology plays in their sport, and the psychological resources available to them during their career. Drivers discussed the danger element of their competition, and how they and their competitors managed the fear associated with racing. The drivers in this study competed in an era that was much more dangerous than the current era of Formula One racing (Barnes, 2013). The drivers' use of psychological skills, and perceptions of sport psychology, may guide consultants working with race car drivers and those working with other populations that have similar psychological and physical demands.
Temple University--Theses
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Fredline, Elizabeth. "Host Community Reactions to Major Sporting Events: The Gold Coast Indy and the Australian Formula One Grand Prix in Melbourne." Thesis, Griffith University, 2000. http://hdl.handle.net/10072/366728.
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It is a widely held and not unfounded belief, that major events stimulate the local economy and 'showcase' the region to the world, potentially promoting future tourism and business activity. This is one of the major reasons that there is increasing private and public sector support for events based economic development strategies. There are other important positive impacts that are often associated with the staging of events, many of which may directly benefit the local population, including the development of facilities and infrastructure, entertainment and social opportunities, and a sense of pride brought about by playing host to a major event.
However, it is also clear that there are outcomes of staging an event that have a negative impact on the local population. Any event attracting large numbers of visitors to a relatively small area is likely to create some problems with noise, traffic, crowding and disruption. There are also likely to be other costs specific to the event or its implementation.
While some of the costs and benefits of an event may affect the whole community, others tend to impact on certain subgroups of the population. For example, residents who are involved in tourism may receive a direct economic benefit, and those who have a particular interest in the theme of the event socially and psychologically benefit, to the extent that they are entertained by it. Similarly, some subgroups are more affected than others by the negative impacts, particularly those living (or conducting their routine activities) closest to the event's focal point. The issue of the relative costs and benefits is therefore compounded by concerns about distributive justice.
This dissertation examines the ways in which local residents react to the staging of a major sporting event within their community. Two case studies, involving the Formula One Grand Prix in Melbourne and the Gold Coast Indy Car Race, were examined within a framework that combined aspects of traditional methods of investigating host community perceptions of tourism with social representations theory. Social representations are the ways in which people perceive various phenomena in the world around them. By identifying these different 'patterns' of perceptions, and profiling the subgroups of the community who hold them, it is possible to gain a better understanding of both the tangible and intangible impacts of events, and how they differentially affect the quality of life of local residents.
Through a combination of quantitative and qualitative methods, five different ways of perceiving the impacts of these events were examined. The five levels can be regarded as points along a continuum, ranging from extremely negative to very positive. The largest group identified, in the middle of the continuum, demonstrated ambivalence in terms of their views on the impact of the event on their quality of life. However, given that they perceived a slightly positive overall community impact, and were largely in favour of the continuation of the event, they can be regarded as being more similar to the positive groups.
In profiling the residents who held each of the representations identified, it was found that the most negative group was generally comprised of those residents whose routine activity space regularly included the focal points of the respective events. Very few members of this group had any financial involvement in tourism, and almost all of them were totally disinterested in motor racing.
At the other end of the continuum, in the most positive group, very high levels of interest in motor sport were observed, and more than half of this group worked in tourism or at least perceived some boost to levels of trade in their industry because of the event. The ambivalent group was characterised by low levels of contact with the areas around the respective tracks. They generally lived a long distance away and rarely travelled to the region.
The investigation of the spatial variation in the perception of event impacts was supplemented through a Geographic Information Systems Analysis, which mapped the perceptions of a number of impacts across the two cities. Finally, an examination of qualitative data, collected via open-ended questions presented to each respondent, provided greater depth of understanding of the basis for differing social representations. It also provided insight into the most salient issues that residents consider when contemplating the impact of an event.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Tourism and Hotel Management
Griffith Business School
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Zemleckienė, Jolanta. "Vienos skaičių sekos modeliavimas ir tyrimas." Bachelor's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110804_090735-12354.
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Sukonstruota ir nagrinėta specialiųjų skaičių seka, kurią sudaro vieno pirminio skaičiaus laipsnis, t. y. pirminiai ir stiprieji sudėtiniai skaičiai. Aproksimacinės formulės pirminio ir sudėtinio skaičiaus radimui, kompiuterinių programų kodai sekai sudaryti ir jos narių skaičiui rasti.Constructed and analyzed the specific sequence, which consists of one prime rate, etc. y. primary and strong composite numbers. Approximation the original formula for finding the number and combination of computer program code sequences and a number of its members to find.
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Akanni, Saïf-Deen. "Air jet vortex generator flow control applied to the rear multi element high downforce wing of a Formula One racing car." Thesis, City University London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269298.
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Maier, Markus. "Formel 1-Sponsoring : ökonomische und juristische Probleme /." Hamburg : Kovac, 2010. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=018987313&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Brand, Janetta Debora. "A quantum hall effect without landau levels in a quasi one dimensional system." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71643.
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Thesis (MSc)--Stellenbosch University, 2012.ENGLISH ABSTRACT: The experimental observation of the quantum Hall effect in a two-dimensional electron gas posed an intriguing question to theorists: Why is the quantization of conductance so precise, given the imperfections of the measured samples? The question was answered a few years later, when a connection was uncovered between the quantum Hall effect and topological quantities associated with the band structure of the material in which it is observed. The Hall conductance was revealed to be an integer topological invariant, implying its robustness to certain perturbations. The topological theory went further than explaining only the usual integer quantum Hall effect in a perpendicular magnetic field. Soon it was realized that it also applies to certain systems in which the total magnetic flux is zero. Thus it is possible to have a quantized Hall effect without Landau levels. We study a carbon nanotube in a magnetic field perpendicular to its axial direction. Recent studies suggest that the application of an electric field parallel to the magnetic field would induce a gap in the electronic spectrum of a previously metallic carbon nanotube. Despite the quasi onedimensional nature of the carbon nanotube, the gapped state supports a quantum Hall effect and is associated with a non zero topological invariant. This result is revealed when an additional magnetic field is applied parallel to the axis of the carbon nanotube. If the flux due to this magnetic field is varied by one flux quantum, exactly one electron is transported between the ends of the carbon nanotube.
AFRIKAANSE OPSOMMING: Die eksperimentele waarneming van die kwantum Hall effek in ’n twee-dimensionele elektron gas laat ’n interessante vraag aan teoretiese fisikuste: Waarom sou die kwantisasie van die geleiding so presies wees al bevat die monsters, waarop die meetings gedoen word, onsuiwerhede? Hierdie vraag word ’n paar jaar later geantwoord toe ’n konneksie tussen die kwantum Hall effek en topologiese waardes, wat verband hou met die bandstruktuur van die monster, gemaak is. Dit is aan die lig gebring dat die Hall geleiding ’n heeltallige topologiese invariante is wat die robuustheid teen sekere steurings impliseer. Die topologiese teorie verduidelik nie net die gewone kwantum Hall effek wat in ’n loodregte magneetveld waargeneem word nie. Dit is ook moontlik om ’n kwantum Hall effek waar te neem in sekere sisteme waar die totale magneetvloed nul is. Dit is dus moontlik om ’n gekwantiseerde Hall effek sonder Landau levels te hˆe. Ons bestudeer ’n koolstofnanobuis in ’n magneetveld loodreg tot die aksiale rigting. Onlangse studies dui daarop dat die toepassing van ’n elektriese veld parallel aan die magneetveld ’n gaping in die elektroniese spektrum van ’n metaliese koolstofnanobuis induseer. Ten spyte van die een-dimensionele aard van die koolstofnanobuis ondersteun die gapings-toestand steeds ’n kwantum Hall effek en hou dit verband met ’n nie-nul topologiese invariante. Hierdie resultaat word openbaar wanneer ’n bykomende magneetveld parallel tot die as van die koolstofnanobuis toegedien word. Indien die vloed as gevolg van hierdie magneetveld met een vloedkwantum verander word, word presies een elektron tussen die twee kante van die koolstofnanobuis vervoer.
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Jackson, Thomas William. "The cost effectiveness of electronic communication." Thesis, Loughborough University, 2001. https://dspace.lboro.ac.uk/2134/7555.
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Electronic communication is becoming an integral part of the communication structure within organisations, but the costs and benefits are not being assessed. Communication by email is usually assumed to be an efficient and effective means of sending messages. However, on analysis the process is seen to be much more complex and much less efficient than is normally assumed. Communication is carried out in many different forms, but the common underlying motive of communication is to improve working practices and to increase productivity. As communication pervades nearly everything we do, even small improvements in the effectiveness and cost of our communication processes can have significant benefits. The aim of this research was to analyse the cost effectiveness of using email and to suggest ways in which the cost effectiveness can be improved. A number of studies have been conducted into the cost effectiveness of email within organisations. The studies were carried out mainly at the Danwood Group, the company sponsoring the author's PhD research. The Danwood Group has just over 500 employees at 19 sites around the UK and its head office is based in Lincoln, where all of the email case studies in this thesis where undertaken. The Danwood Group retails office equipment, predominately photocopiers. Email behaviour was monitored by the use of software at the Danwood Group. This raised a number of questions on the ethical issues of electronic monitoring. This thesis explores these issues and proposes a set of guidelines to allow electronic monitoring within strict professional and ethical guidelines. The Danwood Group studies examined how and when email was used. It was found that, when the company first started using email, over two thirds of messages were non-business-related, though this dropped to less than half in a few months. It was also found that many messages could be delivered in one line of text. A one-line message service was introduced and this was found to save employee time for both senders and receivers of the messages. A costing formula was developed measuring the human cost of operating email messaging. The final study was to determine how long it took employees to recover and return to normal work after an email interruption and this was compared with published data for telephone interrupts. From these results a set of guidelines were developed to enable companies to make the most efficient use of email. The thesis concludes by identifying further areas of research into email usage that would help give a better understanding of methods to enable email to become even more cost effective.
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FANELLI, SERGIO. "Procedure per la valutazione della tensione normale interlaminare in laminati curvi in composito modellati agli elementi finiti: valutazioni critiche e applicazioni su componenti di Formula Uno." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2020. http://hdl.handle.net/11380/1210715.
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I materiali compositi come polimeri rinforzato con fibra di carboniosono spesso utilizzati in molti campi industriali, specialmente dove una progettazione volta alla riduzione del pesoè la prerogativa per estrarre performance da conmponenti strutturali, alcuni esempi sono campo automotive, aerospaziale, o equipaggiamenti sportivi. Riguardo i materiali compositi, una delle loro caratteristica più rilevante è l'anisotropia. Se da un lato questa caratteristica viene intelligentemente utilizzata per ottenere un rapporto performance/peso ragguardevole, dall'altro non bisogna sottovalutare la complessa valutazione del loro stato tensionale. Il presente contributo si occupa della valutazione della componente normale dell'interlaminar stress nei laminati curvi in materiale composito soggetti a forze esterne. anche se queste componenti dello stato tensionale sono di solito più piccole rispetto alle loro controparti nel piano, la limitata resistenza adesiva delle interfacce tra le lamine è causa di delaminazioni, specialmente in laminati curvi, ciò comporta una riduzione della rigideza e della resistenza delle componenti strutturali, ed anche un aumento della probabilità di rottura o il bisogno di una sostizione prematura del componente. Al giorno d'oggi, durante la fase di progettazione, si fa spesso ricorso a modelli agli elementi finiti per valutare il comportamento a rigidezza e resistenza delle componenti in composito. i modelli shell agli elementi finiti sono spesso utilizzati su componenti in composito a causa della loro efficienza computazionale e flessibilità di modellazione con in aggiunta una discreta accuratezza in termini di risultati riguardanti gli spostamenti e la stima degli stress nel piano. Ma la formulazione shell agli elementi finiti trascura ilcontributo dell'interlaminar Normal Stress (ILNS) all energia interna e alla caratterizzazione dello stato tensionale. Una buona stima di come si presenta lo stato tensionale interlaminare di un componente in composito si può ottenere con modelli solidi FE o con modelli misti 2D/3D, on con l'utilizzo di elementi o superfici coesivi. Tuttaviaun modello sviluppato per l'utilizzo nel post-processing e implementato con elementi shell lineari potrebbe rappresentare una buona opportunità di mantenere la complessità di un modello FE a livelli ragionevoli. Il modello sotto esame per ricavare l' ILNS richiede informazioni riguardanti le curvature del componente che possono essere ottenute da un modello shell agli elementi finiti. Questo modello è applicato ad un test di flessione a quattro punti che viene tipicamente usato per valutazioni rigrado l'ILNS su provini in composito. i risultati sperimentali sono messi a confronto con il modello per la valutazione dell'ILNS e un modello solido agli elementi finiti. Inoltreè stata studiata l'applicabilità del modello su casi più complessi come un'ala anteriore di Formula Uno. Un primo test consiste in un caricamento statico dell'ala ed infine è stato valutato un caso di carico dinamico con l'ausilio di un'analisi Modal Transient.Composite materials as carbon fiber reinforced polymer are often used in many industrial fields, specially where lightweight design is the prerogative to extract performance from structural components, some examples are automotive, aerospace, or sports equipment structures. Anisotropy is the main feature of composites materials, on one side this property is cleverly used to obtain a remarkable performance/weight ratio on, but on the other side there's a complex stress state to evaluate. The present contribution deals with the evaluation of the normal component of interlaminar stress in curved composite laminates subject to remote loads. Although those stress components are usually smaller than their in-plane counterparts, the comparably limited adhesion strength of the interlaminar interfaces causes the experience of delaminations, specially in curved laminates, resulting in reduced stiffness and strength of the structural component, and even a higher probability of failure or need for premature component substitution. A Finite Element (FE) model is nowadays usually required during the design phase in order to evaluate composite components behavior by a stress and stiffness point of view. Shell finite elements models are often used for composite components due to their computational efficiency and modeling flexibility mixed with discrete accuracy in terms of displacements results and in-plane stresses estimation. Nevertheless, the customary shell finite element formulation neglects the contribution of the Interlarminar Normal Stress (ILNS) component to internal energy and to the stress state characterization. A good estimation of what is the interlaminar stress state of a composite component could be obtained with solid FE models, or mixed 2D/3D FE models, or cohesive elements and surfaces. But a model developed for post-processing and implemented with linear shell element types may represent a good opportunity to maintain the FE model complexity at reasonable levels. The model for the evaluation of ILTS under investigation requires information about curvatures that can be obtained by a simple shell FE model, and it is applied on a four point bending test case which is usually adopted for ILNS evaluation of composite components. The experimental results and the model results are compared and a solid FE model is added to the comparison. Furthermore, the applicability of the model on a more complex matrix is investigated, using as a case study a Formula One front wing. A test case consisting in a static loading is evaluated and also a dynamic load case involving a modal transient analysis.
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Shepherd, Juliet. "Theoretical studies of slow collisions : elastic electron scattering from positive ions, charge transfer in one-electron ion-ion systems and mutual neutralization of Hâ»/Dâ» and Hâºâ‚‚." Thesis, University of Newcastle Upon Tyne, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366574.
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Masouleh, Mehdi Imani. "Optimal control and stability of four-wheeled vehicles." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:c55c3e9c-270c-4d47-b5f8-e86621608b24.
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Two vehicular optimal control problems are visited. The first relates to the minimum lap time problem, which is of interest in racing and the second the minimum fuel problem, which is of great importance in commercial road vehicles. Historically, minimum lap time problems were considered impractical due to their slow solution times compared with the quasi-steady static (QSS) simulations. However, with increasing computational power and advancement of numerical algorithms, such problems have become an invaluable tool for the racing teams. To keep the solution times reasonable, much attention still has to be paid to the problem formulation. The suspension of a Formula One car is modelled using classical mechanics and a meta-model is proposed to enable its incorporation in the optimal control problem. The interactions between the aerodynamics and the suspension are thereby studied and various related parameters are optimised. Aerodynamics plays a crucial role in the performance of Formula One cars. The influence of a locally applied perturbation to the aerodynamic balance is investigated to determine if a compromise made in design can actually lead to lap time improvements. Various issues related to minimum lap time calculations are then discussed. With the danger of climate change and the pressing need to reduce emissions, improvements in fuel consumption are presently needed more than ever. A methodology is developed for fuel performance optimisation of a hybrid vehicle equipped with an undersized engine, battery and a flywheel. Rather than using the widely used driving cycles, a three-dimensional route is chosen and the optimal driving and power management strategy is found with respect to a time of arrival constraint. The benefits of a multi-storage configuration are thereby demonstrated. Finally, the nonlinear stability of a vehicle model described by rational vector fields is investigated using region of attraction (RoA) analysis. With the aid of sum-of-squares programming techniques, Lyapunov functions are found whose level sets act as an under-approximation to the RoA. The influence of different vehicle parameters and driving conditions on the RoA is studied.
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Khoury, Michael John Jr. "Multiplicity One Results and Explicit Formulas for Quasi-Split p-adic Unitary Groups." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1218567821.
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Pereira, Maur?cio Rodrigues. "Estudo da adi??o de argila expandida na formula??o de concretos leves." Universidade Federal do Rio Grande do Norte, 2008. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12669.
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Previous issue date: 2008-11-10Lightweight concrete has been the subject of several studies towards the development of new building materials. Emphasis has been given on the particle size effect and nature of aggregates used as raw materials. The present study includes an analysis of the materials that make this kind of concrete, analyzes of mechanical properties such as compressive and tensile strength, in addition to assessments of the interface concrete aggregate/matrix interface, porosity and absorption profile of chloride ions in lightweight concrete based on expanded clay. The experiments were carried out by molding cylindrical samples 100 mm in diameter and 200 mm in height. The dosage experiments were performed without additives or with the addition of minerals: (T1) 1: 2.01: 1.10: 0.78 (T2) 1: 2.00: 1.32 : 0.62 - (T3) 1 :1.93 :1.54: 0.47 (cement : sand : expanded clay 0500 : expanded clay 1506).The water to cement ratio was set to 0.43. Expanded clay minerals with different average particle sizes were used, i.e., 9.5 mm/0500 and 19 mm/1506. The larger aggregate was coated by a glassy layer, yielding lower water absorption characteristics to the concrete. The results showed that the use of light expanded clay aggregates is a technically interesting solution to the production of lightweight concrete for construction applications
Considerando-se as tend?ncias de novos materiais na Constru??o Civil, o concreto leve tem sido objeto de v?rios trabalhos, com ?nfase na granulometria e suas mat?rias primas. Incluem-se neste estudo a altera??o de tra?os e dos materiais que comp?em esse concreto, analisando altera??es nas propriedades mec?nicas como resist?ncia ? compress?o e tra??o por compress?o diametral, al?m da interface agregado/matriz, porosidade e perfil de absor??o de ?ons cloreto no concreto leve ? base de argila expandida. Os experimentos foram realizados atrav?s de moldagem de corpos de prova cil?ndricos, com 100 mm de di?metro e 200 mm de altura. A dosagem experimental foi efetuada sem aditivos ou adi??es minerais, nos tra?os unit?rios em massa: (T1) 1 : 2,01 : 1,10 : 0,78 (T2) 1 : 2,00 : 1,32 : 0,62 - (T3) 1 : 1,93 : 1,54 : 0,47 (cimento : areia : argila expandida 0500 : argila expandida 1506); fixando-se a rela??o ?gua/cimento em 0,43. Para tanto, utilizou-se como agregado gra?do uma argila expandida, nas gradua??es 9,5 mm/0500 e 19 mm/1506. A argila de gradua??o maior era revestida com uma camada vitrificada, o que propiciou menor absor??o de ?gua pelo concreto. Os resultados mostraram que a utiliza??o da argila expandida como agregado leve ? uma solu??o tecnicamente vi?vel na produ??o de concreto leve para Constru??o Civil.
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Deleveaux, Gia. "Critical edutainment : an in-depth look at informal education at one facility." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103194.
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Through the lenses of critical pedagogy, cognitive psychology, marketing, curriculum development, traditional and informal education, and Black education, how one centre constructed and implemented critical edutainment is reviewed and scrutinized. The ethnographic study took place in a hyperreal (Baudrillard) setting using a bricolage of research methods: Seidman's 3-part interview protocol with workers and administrators; McMillan's focus group interview process with 9-12 year olds; participant-observation; field and reflective notes; and artefacts from external sources such as television broadcasts, newspapers, and official documents to gather and analyse data. In spite of its noble intentions, Gramsci's hegemony was witnessed and maintained through the centre's structure and organisation hence causing stress on the workers. Although the children and adults approved of the teaching and disciplinary acts, close regulation of their actions was done. Critical edutainment employs Vygotsky's zone of proximal development as it acknowledges the indigenous knowledges of adults and children and asks them to co-construct a curriculum that is cognitively, affectively, and socially relevant. It shows how curriculum construction, teamwork, accountability, and lessons learned from Black educators can be used to make a viable critical edutainment site that incites learning and fun.
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Dal, Borgo Martina. "Mimicking the one-dimensional marginal distributions of stochastic diffusions." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6309/.
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In the large maturity limit, we compute explicitly the Local Volatility surface for Heston, through Dupire’s formula, with Fourier pricing of the respective derivatives of the call price.
Than we verify that the prices of European call options produced by the Heston model, concide with those given by the local volatility model where the Local Volatility is computed as said above.
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Adnerhill, Therese. "One committee - two institutions? : The Committee of European Affairs in Sweden and Denmark." Thesis, Växjö University, School of Social Sciences, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-1891.
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In order to have some say and to scrutinise the government all member states of the EU today has established an institution within their national parliaments, the Committee of European Affairs. This institution, however, has very different rights and regulations depending on the country it is established in. This study uses two rather similar countries, Sweden and Denmark, and investigates what differences and similarities the two committees show.
By constructing a comparative case study of four units of analysis, the governments and committees of European Affairs in Sweden and Denmark, the formal and informal power relationship between government and committee in each country were studied in order to determine similarities and differences and whether the committee had an impact on the governments’ EU policies. Further they were compared, assessing whether the Danish Committee of European Affairs was more powerful than its Swedish counterpart because of its legal basis in an EU document.
The theoretical framework was built on empirical institutionalism and Lukes’ first and second dimension of power. The similarities and differences were accounted for and compared. In conclusion, the Danish Committee of European Affairs has more formal power than its Swedish counterpart but regarding informal power the Swedish Committee of European Affairs has a slight advantage. Both committees have an impact on the way their government handle negotiations with the EU.
Keywords: formal power, informal power, the Committee of European Affairs, Sweden, Denmark
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Maslin, Kate. "The effect of a cows' milk exclusion diet and substitute formula in infancy on childhood eating habits." Thesis, University of Portsmouth, 2015. https://researchportal.port.ac.uk/portal/en/theses/the-effect-of-a-cows-milk-exclusion-diet-and-substitute-formula-in-infancy-on-childhood-eating-habits(1569431d-cee8-462d-a86b-636bb0445966).html.
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Cows’ milk allergy is the most common infant food allergy, requiring a strict exclusion diet usually for the first year of life. This exclusion of a main food group occurs at a critical time in the development of food preferences and eating habits. It is known that infants are born with an innate predisposition to prefer and reject certain tastes. However, these innate preferences can be altered with exposure to (and exclusion of) different foods. The aim of this research was to determine if the use of substitute formula and exclusion of milk products in the management of cows’ milk allergy affects fussy eating and food preferences in the short or long term. This research consisted of two separate cross-sectional studies that measured eating behaviours in children currently and previously consuming an exclusion diet for cows’ milk allergy. Two different age groups were assessed; infants and school-aged children. The outcome measures were: fussy eating, food neophobia, feeding difficulties, dietary variety, nutritional intake, food preference, taste preference and growth. The main findings were that children currently consuming an exclusion diet for cows’ milk allergy have higher levels of fussy eating, feeding difficulties and food neophobia compared to a control group. These levels were associated with the number and type of allergic symptoms. Children who had consumed an exclusion diet for cows’ milk allergy in infancy had significantly higher levels of avoidant eating behaviour and a lower preference for dairy products than the control group, several years after cows’ milk had been reintroduced. Significant differences in dietary variety and the intake of some micronutrients were observed, but there was no difference in growth measurements between groups at either age. This research has identified some novel findings, which have implications for health professionals and researchers working in food allergy and childhood nutrition. Whilst consuming an exclusion diet is essential for symptomatic relief in the management of cows’ milk allergy, it is clear that it can have secondary effects on fussy eating and food preferences. These secondary effects can persist into adolescence. It therefore underlines the importance of ensuring exclusion diets for food allergy are not initiated unnecessarily or implemented for too long. The diagnosis of cows’ milk allergy needs to be robust and monitoring of both exclusion diets and fussy eating should be timely.
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Göransson, Gustav, and Mathias Johnson. "Optimering av lagernivåer vid distributionscentralen Bygg Ole." Thesis, KTH, Optimeringslära och systemteori, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188980.
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Detta examensarbetes syfte var att undersöka möjligheter till förbättring av hantering av lagernivåer för Bygg Ole Saltsjö-Boo. En kombination av aspekter från både systemteknik och industriell ekonomi har använts. I rapporten applicerades Guaranteed Service-Level modellen baserad på historisk försäljning i kombination relevanta teorier om lagerkostnad. Rapporten var begränsad till att behandla utvalda produkter med hög omsättning från två utvalda leverantörer till Bygg Ole. Efterfrågan för alla produkter i rapporten utom en är icke säsongsberoende. Särskild hänsyn har dessutom tagits till servicenivå, kapitalkostnader och variation i efterfråga. Resultatet gav att en implementering av modellen skulle ge lägre lagernivåer och därmed lägre lagerkostnader. Slutsatsen från rapporten var att modellen skulle kunna implementeras, eventuellt med höga administrativa kostnader i början. Bygg Ole har också en möjlighet att använda ett ordersystem baserat på den matematiska GSL-modellen (Guaranteed Service-Level) i kombination med prognoser över efterfrågan producerade av försäljningsavdelningen på Bygg Ole. Detta skulle potentiellt kunna öka precisionen i lagerhanteringen. Den nuvarande lagerräntan är relativt lågt bestämd och därför minskas de beräknade besparingarna från implementering av modellen. Om lagerräntan skulle vara högre skulle den ekonomiska fördelen med implementeringen vara tydligare. Rekommendationen till Bygg Ole är att tillämpa den rekommenderade GSL-modellen i kombination med ett system för prognos över efterfrågan på några utvalda produkter och sedan utvärdera resultatet.The aim of this thesis was to examine possible improvements in the inventory management and procedure of ordering at Bygg Ole Saltsjö-Boo. A combination of aspects from both Systems Engineering and Industrial Engineering and Management has been used. In the report, a Guaranteed Service-Level model based on historical data of sales in combination with relevant theories about inventory carrying cost has been applied. The study was limited to specific chosen products with high sales from two selected suppliers of Bygg Ole. All these products in the study except one experienced low seasonal variety in demand. Furthermore special consideration was taken to service level, cost of capital and variability of demand. The result was that an implementation of the model would yield lower inventory levels and therefore lower carrying costs of inventory. The conclusion from the report was that the model could be implemented, although with possibly high administrative costs in the beginning. Bygg Ole also has a possibility of using an ordering system based on the mathematical GSL-model (Guaranteed Service-Level) in combination with forecasts of demand conducted by the sales department of Bygg Ole. This could potentially increase precision in the inventory management. The current inventory carrying charge is compounded relatively low and therefore decreases the calculated savings from implementing the model. If the carrying charge would be higher, the benefits of implementation would be more evident. The recommendation for Bygg Ole is to apply the recommended GSL-model in combination with a demand forecast planning system on a few selected products and then evaluate the result.
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Neiger, Vincent. "Bases of relations in one or several variables : fast algorithms and applications." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEN052.
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Dans cette thèse, nous étudions des algorithmes pour un problème de recherche de relations à une ou plusieurs variables. Il généralise celui de calculer une solution à un système d’équations linéaires modulaires sur un anneau de polynômes, et inclut par exemple le calcul d’approximants de Hermite-Padé ou d’interpolants bivariés. Plutôt qu’une seule solution, nous nous attacherons à calculer un ensemble de générateurs possédant de bonnes propriétés. Précisément, l’entrée de notre problème consiste en un module de dimension finie spécifié par l’action des variables sur ses éléments, et en un certain nombre d’éléments de ce module ; il s’agit de calculer une base de Gröbner du modules des relations entre ces éléments. En termes d’algèbre linéaire, l’entrée décrit une matrice avec une structure de type Krylov, et il s’agit de calculer sous forme compacte une base du noyau de cette matrice. Nous proposons plusieurs algorithmes en fonction de la forme des matrices de multiplication qui représentent l’action des variables. Dans le cas d’une matrice de Jordan,nous accélérons le calcul d’interpolants multivariés sous certaines contraintes de degré ; nos résultats pour une forme de Frobenius permettent d’accélérer le calcul de formes normales de matrices polynomiales univariées. Enfin, dans le cas de plusieurs matrices denses, nous accélérons le changement d’ordre pour des bases de Gröbner d’idéaux multivariés zéro-dimensionnelsIn this thesis, we study algorithms for a problem of finding relations in one or several variables. It generalizes that of computing a solution to a system of linear modular equations over a polynomial ring, including in particular the computation of Hermite- Padéapproximants and bivariate interpolants. Rather than a single solution, we aim at computing generators of the solution set which have good properties. Precisely, the input of our problem consists of a finite-dimensional module given by the action of the variables on its elements, and of some elements of this module; the goal is to compute a Gröbner basis of the module of syzygies between these elements. In terms of linear algebra, the input describes a matrix with a type of Krylov structure, and the goal is to compute a compact representation of a basis of the nullspace of this matrix. We propose several algorithms in accordance with the structure of the multiplication matrices which specify the action of the variables. In the case of a Jordan matrix, we accelerate the computation of multivariate interpolants under degree constraints; our result for a Frobenius matrix leads to a faster algorithm for computing normal forms of univariate polynomial matrices. In the case of several dense matrices, we accelerate the change of monomial order for Gröbner bases of multivariate zero-dimensional ideals
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Mandetta, Fernanda de Araújo. "Jovens : da ONG para o trabalho? = escolarização, trabalho e trajetórias de jovens de classes populares de Campinas/SP." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/251417.
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Orientador: Aparecida Neri de SouzaDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação
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Resumo: O objetivo desta pesquisa é reconstruir a trajetória de jovens de camadas populares, analisando suas experiências de escolarização, educação não formal, inserção no mercado de trabalho, assim como as expectativas quanto ao futuro. Metodologicamente, a pesquisa trabalha com história oral registrando as múltiplas visões sobre o passado que permitem construir ou reconstruir os processos identitários de um grupo de jovens da periferia urbana do distrito de Sousas em Campinas, no Estado de São Paulo. Os jovens entrevistados foram selecionados dentre aqueles que tiveram participação no projeto Educação Não Formal, Memória e Cidadania: os Distritos de Campinas/SP e nas oficinas de educação não formal desenvolvidas, em 2005, pelo Centro de Memória da Unicamp (CMU) e que continuam ligados à organização não governamental Centro Comunitário Irmãos André (Cecoia), localizado no distrito de Sousas (Campinas, Estado de São Paulo). Estes jovens, oriundos de grupos sociais de baixa renda, habitam espaços urbanos degradados, têm percursos escolares dispares, com inserção intermitente no mercado de trabalho, sonham em poder ter empregos estáveis e decentes, isto é, trabalho que seja portador de sentido, qualificado. Também sonham em continuar estudando, como possibilidade de mobilidade social e de conquista de uma profissão. Finalmente, a pesquisa evidencia que a metodologia da história oral possibilita transformações não só no pesquisador, mas também nos sujeitos pesquisados.
Abstract: This present research aims to reconstruct the trajectory of the lower classes youth by means of analyzing not only their schooling experiences, non-formal education, insertion in the work market, but also their expectations to the future. The research is carried out using the oral history, recording the multiple views about the past which allows to construct and reconstruct the identity processes of a youth group from the urban suburb of Sousas in the city of Campinas, State of São Paulo. The interviewed youths were selected from the ones who attended the project Non Formal Education, Memory and Citizenship: the Districts of Campinas/SP and in the non formal education workshops carried out in 2005 by Centro de Memória da Unicamp (Memory Center of Unicamp - CMU) and are still linked to the non governmental organization Centro Comunitário Irmãos André (Cecoia), located in the district of Sousas (Campinas, State of São Paulo). These youths coming from lower income social groups live in degraded urban places, where the routes to school are calamitous, with intermittent insertion in the work market, dreaming of getting stable and decent jobs, that means, significant and qualified job. They also dream about continuing studying as a possibility of social mobility and achievement in getting a job. Ultimately, the research evidences that the oral history methodology allows transformation not only to the individual subjected to this research but also to the researchers.
Mestrado
Educação, Sociedade, Politica e Cultura
Mestre em Educação
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Öksuz, Ekin Meliha, and Katarzyna Beata Dankowska. "Anhörigas medverkan på särskilt boende." Thesis, Linnéuniversitetet, Institutionen för socialt arbete, SA, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-24452.
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This is a qualitative study that explores the involvement of the relatives in the special housing based on the perspective of fourteen interviewees working in elderly care, at special housing. The purpose of this study is to analyze the nursing staff's view of the involvement of the relatives and the presence of care provision at special housing. The study is to find out what can constitute support or obstacles to the relatives. Three questions have been presented as the structural basis upon which the objective finds its conclusion. These questions try to explore and identify the forms of support that can help relatives in their involvement in elderly care. There are opportunities and obstacles for the involvement of the relatives in the care of the elderly as well as expectations of nursing staff on the role of the relatives in the care of the elderly which the following study focuses on. The research reflected in this study involves the care staff and their experiences and views on the relatives who have their older live permanently in residential care. In conclusion, the study identifies similar reasoning among respondents regarding to key aspects of the relatives at the special housing. They emphasizes that relatives are needed there and they are important resource for both the residents and the staff. The results indicate that there may be both opportunities and obstacles for the involvement of the relatives. On one side, factors that prevent relatives from their involvement are lack of communication, poor attitude, different views of relatives and staff about care and conflicts between them. On the other side, there are opportunities that can facilitate relatives' involvement, namely the fact that they need support from the staff. The interviewees pointed out that the relationship between relatives and the elderly is the basis of the relatives' involvement.
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O'Cleirigh, Rebecca Jennifer. "An in vitro study of the biological actions of a Chinese herbal formula on selected haematological and vascular processes related to endometrial receptivity." Thesis, University of Portsmouth, 2017. https://researchportal.port.ac.uk/portal/en/theses/an-in-vitro-study-of-the-biological-actions-of-a-chinese-herbal-formula-on-selected-haematological-and-vascular-processes-related-to-endometrial-receptivity(da1779ff-6b27-46a7-b472-320b3b7cd298).html.
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Chinese herbal medicines are used by women across the world to treat infertility in natural and assisted reproductive cycles. Randomised control trials and systematic reviews have shown the clinical efficacy of these medicines, but there remains a paucity of information as to the mechanisms by which they exert their effect. The herbal formula in this study, Gui Shao Di Huang Wan comprises eight herbs and is used to treat infertility. It is a base formula from which practitioners create a personalised medicine. The observed fertility benefits may be due to improvements in the receptivity of the endometrium, and a key aspect of this is haematology. The blood is a concept where the western and Chinese perspectives on fertility converge. Aqueous extracts of the whole formula and the individual herbs were used. Prothrombin time and activated partial thromboplastin time were used to evaluate time to clot formation. An MTT assay was used to look at proliferation of human umbilical vein endothelial cells. A 2D differentiation assay was performed on matrigel using human umbilical vein endothelial cells and human uterine microvascular endothelial cells. Lysates of Ishikawa endometrial cells exposed to the herb extracts were used in immunoblotting to explore changes in oestrogen and progesterone receptor expression. Haemostasis, proliferation and differentiation of endothelial cells and expression of steroid receptor proteins on an endometrial cell line have all been shown to be affected by the herb extracts in in vitro assays modelling these functions. Prothrombin time (Welch’s F (8,14.57) =50.21, p < 0.0005) and activated partial thromboplastin time (Welch’s F (8,13.77) =38.79, p < 0.0005) were both increased. The whole formula led to an increase in proliferation at concentrations between 0.68 and 5.47 μg/mL at 48 and 72 hours. Metrics of tubule number, length, junctions, and mesh size were increased in endothelial cells. All parameters of Human Umbilical Vein Endothelial Cells were statistically significantly increased by the whole formula but not the individual herbs. The Human Uterine Microvascular Endothelial Cell mesh was increased by all herb extracts, total length, and segment number by Radix Paeoniae Alba, Sclerotium Poria. Cocos, Radix Rehmanniae Preparata, Rhizoma Dioscoreae, Fructus Corni, and Rhizoma Alismatis, total length and junction number for Fructus Corni. Modifications to expression of ERα and PRβ were observed. Down-regulation of Estrogen receptor alpha after 24 hour exposure to the herbs for Radix Paeoniae Alba, Radix Angelicae Sinensis, Sclerotium Poria Cocos, and Cortex Moutan. Progesterone receptor beta was upregulated by treatment with Radix Paeoniae Alba, Radix Angelicae Sinensis, Sclerotium Poria Cocos and Radix Rehmanniae Preparata after 48 hours exposure to the herb extract. This study adds a new perspective to the limited evidence available through clinical trials which examine Chinese herbal medicines and their potential for use in treating female infertility. The observed effects of the herbs may be mediated by the influence on the identified haematological and vascular processes related to endometrial receptivity.
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Ghelardi, Vania Galliciano. "Candomblé, práticas educativas e as relações de gênero no espaço social onde filhas e filhos de santo aprendem e ensinam por meio da oralidade." Universidade Estadual do Centro-Oeste, 2015. http://repositorio.utfpr.edu.br/jspui/handle/1/2754.
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O foco do presente trabalho está nas ações educativas, práticas de convivência de Mães e Pais de Santo, frequentadores das Casas de Àse e nas relações de gênero. Os resultados foram obtidos por meio de visitas e entrevistas no período entre dezembro de 2013 a fevereiro de 2014, momento em que a pesquisadora conviveu por três semanas com membros da Casa de Àse, participou de rituais, assim como na preparação dos mesmos, incluindo o processo de iniciação de um Ìyáwó. Nessa experiência ocorreram diálogos formais e informais com os membros da casa. As observações geraram respostas inesperadas às questões propostas. A pesquisa investigou, por meio de relatos de Pais, Mães e filhos de Santo, instituições específicas da Religião Afro-brasileira. Analisaram-se os métodos, ensino da cultura, doutrina, relações de gênero e suas influências no processo de ser e fazer no contexto dessas Casas de Àse. Para tanto, devido ao caráter investigativo, buscou-se informações sobre o passado religioso dos entrevistados, seus ancestrais, origens, entre outros.The present article focuses on the educational actions, and relationship practices on the part of “Mães e Pais de Santo”, who are frequenters of the Houses of Àse, and on gender relations. Results were obtained by means of visits and interviews carried out from December, 2013 to February, 2014. During this period, the researcher spent three weeks with the House of Àse’s members. She took part in rituals, as well as on their preparation, including the initiation process of Ìyáwó. Throughout this experience formal and informal dialogues were exchanged among the houses’ members. Observations yielded unexpected answers to the questions posed. The study investigated specific institutions of the AfroBrazilian religion through verbal reports from Pais, Mães and filhos de Santo. Methods, the teaching of culture, the doctrine and gender relations were analyzed, as well as their influence on the process of “being” and “doing” in the context of the Houses of Àse. Bearing that in mind, and given the investigative character of this study; one searched for information about the interviewed, as well as their ancestors’ religious past and origins amongst other background information.
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Carneiro, Juliana Daros. "Desafios da avalia??o em um projeto s?cio-educativo: assist?ncia social, ONG e escola p?blica." Pontif?cia Universidade Cat?lica de Campinas, 2011. http://tede.bibliotecadigital.puc-campinas.edu.br:8080/jspui/handle/tede/679.
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Previous issue date: 2011-02-18This is a study of a partnership between the Municipal Secretariat of Citizenship, Welfare and Social Inclusion (SMCAIS), a nongovernmental organization (NGO) and a public school in a town in the state of S?o Paulo (SP) . This partnership is developed through socio-educational activities for children and male adolescents, aged between 6 and 14 years, against the school schedule. The overall objective is to identify as non-formal education has been conceived and proposed within this partnership. Specifically, it aims to examine what they are and who should receive these socio-educational; discuss the presence of instruments and valuation models, both of public policy interest in the field of non-formal education and, finally, to identify the ( s) form (s) of existence of dialogue between the various bodies that compose this public assistance policy. The research methodology consists of: (i) review of key concepts such as non-formal education, evaluation, non-governmental organization, public and social policies, (ii) research on documentary material relating to the partnership, especially SMCAIS and NGOs (Resolution No. 01/2009 municipal, annual management reports, news articles, bylaws, work plans for 2009 and 2010 annual technical report of 2009 activities, organization chart) and (iii) semi-structured interviews with one representative from each of the institutions that make up this partnership (the educational coordinator of the NGO, a psychologist at the City Office and vice director of the school). We used a qualitative approach and the empirical material has been reviewed and organized according to categories constructed along the analytical process. As final results, we found that the non-formal education in our case, seems to be designed in ways contradictory, since while he assumed the defense speech of social transformation, in practice this character is not evident. These contradictions were analyzed in so-called socio-educational activities, forms of dialogue established between the institutions and instruments of evaluation. With regard to assessment procedures used were able to identify weaknesses and limitations, when it is adopted as reference the concept of formative evaluation: the tools are focused on the bureaucratic, technical, financial and quantitative development of the project, and are is centralized by a single institution, the SMCAIS. We believe that this research will bring significant contributions to advancing the discussions on educational concepts present in the forms of partnership between state public sector and private sector, from a broad view of education.
Trata-se de um estudo sobre uma parceria entre a Secretaria Municipal de Cidadania, Assist?ncia e Inclus?o Social (SMCAIS), uma organiza??o n?o-governamental (ONG) e uma escola p?blica estadual de uma cidade do interior do estado de S?o Paulo (SP). Esta parceria ? desenvolvida por meio de a??es s?cio-educativas destinadas a crian?as e adolescentes do sexo masculino, com idade entre 6 e 14 anos, no contra turno escolar. O objetivo geral da pesquisa ? identificar como a educa??o n?o-formal vem sendo concebida e proposta dentro desta parceria. Especificamente, pretendemos verificar o que s?o e a quem se destinam estas a??es s?cio-educativas; problematizar a presen?a de instrumentos e modelos de avalia??o, tanto da pol?tica p?blica como das a??es no campo da educa??o n?o-formal; e, por fim, identificar a(s) forma(s) de exist?ncia de di?logo entre as diferentes inst?ncias que comp?em essa pol?tica p?blica assistencial. A metodologia de pesquisa ? composta por: (i) a revis?o bibliogr?fica dos conceitos chaves, tais como educa??o n?o-formal, avalia??o, organiza??o n?o-governamental, pol?ticas p?blicas e sociais; (ii) pesquisa documental sobre materiais referentes ? parceria, especialmente da SMCAIS e da ONG (resolu??o municipal n?01/2009, relat?rios anuais de gest?o, reportagens, estatuto social, Planos de trabalho de 2009 e 2010, relat?rio t?cnico anual de atividades de 2009, organograma da entidade) e (iii) entrevistas semiestruturadas com um representante de cada uma das institui??es que comp?em esta parceria (a coordenadora pedag?gica da ONG, a psic?loga da secretaria municipal e o vice-diretor da escola). Utilizamos uma abordagem qualitativa e o material emp?rico foi examinado e organizado de acordo com categorias constru?das ao longo do processo anal?tico. Como resultados finais, identificamos que a educa??o n?o-formal no caso em estudo, parece ser concebida de formas contradit?rias, uma vez que ao mesmo tempo em que assume o discurso de defesa da transforma??o social, na pr?tica este car?ter n?o ? evidenciado. Estas contradi??es foram analisadas nas chamadas a??es s?cioeducativas, nas formas de di?logo estabelecidas entre as institui??es e nos instrumentos de avalia??o. No que se refere aos procedimentos de avalia??o utilizados foi poss?vel identificar fragilidades e limita??es, quando adota-se como refer?ncia o conceito de avalia??o formativa: os instrumentos est?o focalizados em aspectos burocr?ticos, t?cnicos, financeiros e quantitativos do desenvolvimento do projeto; e, encontram-se centralizados por uma ?nica institui??o, a SMCAIS. Consideramos que a presente pesquisa trar? contribui??es importantes para fazer avan?ar as reflex?es sobre concep??es educacionais presentes nas formas de parceria entre setor p?blico estatal e setor privado, a partir de uma vis?o ampla de educa??o.
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Palma, Luciane Vieira. "No Morumbi, entre meninos, meninas e tambores : reflexões sobre a educação a partir da vivencia no/do cotidiano de uma ONG em São Paulo." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/252993.
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O exemplar da FE é acompanhado de 1 CD-R, com vídeoOrientador: Maria Teresa Egler Mantoan
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação
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Resumo: Este estudo teve como objetivo conhecer e analisar o cotidiano dos trabalhos desenvolvidos por uma importante e conhecida ONG (organização não-governamental) de São Paulo, a Associação Meninos do Morumbi, para retirar possíveis implicações de sua metodologia de trabalho para a educação formal, de modo que os êxitos por ela obtidos em termos educacionais apontassem caminhos e/ ou alternativas para a melhora da qualidade do ensino nas nossas escolas. Para a escrita desta dissertação recorri a diferentes linguagens, dentre as quais destaco a linguagem literária, através de crônicas sobre minha vivência na Associação, e a linguagem plástica, através de códigos ilustrativos. Além disso, em anexo há um CD Rom que ilustra o ambiente acadêmico em que este trabalho foi defendido. Trata-se de uma mostra artística que se concretizou a partir da interpretação do conteúdo do trabalho por uma artista plástica. A intenção de apresentar este estudo rompendo as formas usuais adotadas pela Universidade, tem a ver com a pesquisa no/ do cotidiano e com a confluência que quis fazer entre várias linguagens para abordar um mesmo assunto, no caso a educação, através de outra escrita que ¿não seja o seja o aprisionamento e a morte das significações¿ (AMORIM, 2004, p). A vivência no cotidiano desta ONG mostrou que mesmo que se parta do pressuposto de que a educação não-formal é complementar à educação formal, que seus objetivos são diferentes, ambas devem buscar a construção de um fazer próprio, local, atrelado a uma visão de ensino inovadora
Abstract:This study aimed at knowing and analyzing the day-to-day work developed by an important and well known NGO (non-governmental organization) from São Paulo, the Associação de Meninos do Morumbi - Boys Association of Morumbi, in order to withdraw possible implications from its working methodology for the formal education, so that the success they have reached in educational terms could indicate ways and/or alternatives to improving the quality of teaching in our schools. For the writing of this dissertation different kinds of language were used, among which the literary language, through narratives of my experience in the Association, and the plastic language, through illustrative codes . Besides that, there is an attached CD Rom which illustrates the academic environment in which this work was carried out. It regards an art exhibition that was made real from the interpretation of this work¿s content made by a fine artist. The intention of presenting this study by breaking with the usual forms adopted by the University, has to do with the research in / of the day-t0-day life and with the confluence of several kinds of language to approach the same subject, in this case education, through a different kind of writing that ¿ is not the imprisonment and death of the significations¿ (AMORIM, 2004) The experience in the day-to-day life of this NGO showed that even when one assumes that the non formal education is complementary to the formal education, and that their objectives are different, both must aim at building their own, local way of doing things, coupled with an innovative vision of teaching
Mestrado
Mestre em Educação
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Rasamimanana, Prosper. "Contribution à l'étude structurale et ultrastructorale de l'épithélium séminifère d'animaux hybrides, dont les géniteurs ont une formule chromosomique différente : étude des variations circannuelles chez les lémuriens et de l'effet du vieillissement chez la souris." Nancy 1, 1996. http://www.theses.fr/1996NAN10368.
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Carter, Rebekah. "Verification of liveness properties on hybrid dynamical systems." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/verification-of-liveness-properties-on-hybrid-dynamical-systems(8817319c-a63f-4cf3-927d-a2ddf69139b4).html.
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A hybrid dynamical system is a mathematical model for a part of the real world where discrete and continuous parts interact with each other. Typically such systems are complex, and it is difficult to know how they will behave for general parameters and initial conditions. However, the method of formal verification gives us the ability to prove automatically that certain behaviour does or does not happen for a range of parameters in a system. The challenge is then to define suitable methods for proving properties on hybrid systems.This thesis looks at using formal verification for proving liveness properties on hybrid systems: a liveness property says that something good eventually happens in the system. This work presents the theoretical background and practical application of various methods for proving and disproving inevitability properties (a type of liveness) in different classes of hybrid systems. The methods combine knowledge of dynamical behaviour of a system with the brute-force approach of model checking, in order to make the most of the benefits of both sides. The work on proving liveness properties is based on abstraction of dynamical systems to timed automata. This thesis explores the limits of a pre-defined abstraction method, adds some dynamical knowledge to the method, and shows that this improvement makes liveness properties provable in certain continuous dynamical systems. The limits are then pushed further to see how this method can be used for piecewise-continuous dynamical systems. The resulting algorithms are implemented for both classes of systems.In order to disprove liveness properties in hybrid systems a novel framework is proposed, using a new property called deadness. Deadness is a dynamically-aware property of the hybrid system which, if true, disproves the liveness property by means of a finite execution: we usually require an infinite execution to disprove a liveness property. An algorithm is proposed which uses dynamical properties of hybrid systems to derive deadness properties automatically, and the implementation of this algorithm is discussed and applied to a simplified model of an oilwell drillstring.
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Inglesi, Ana Shitara. "A leitura nas organizações não-governamentais e inter-relações com a escola pública: um estudo de caso." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/48/48134/tde-18062008-162359/.
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Tendo em vista o baixo grau de letramento entre os alunos do ensino fundamental e médio no Brasil e, concomitantemente, o crescimento espantoso do número de organizações não- governamentais (ONGs) trabalhando no campo da educação nas últimas décadas, o presente trabalho procura estabelecer uma ponte entre estas duas faces da educação no Brasil. Pretendemos, então, compreender a dinâmica e a influência das ONGs no Brasil no campo da educação e, mais especificamente, no campo da leitura, tendo em vista o desenvolvimento do letramento. Para tanto, fizemos um estudo qualitativo com características etnográficas baseado, sobretudo, em observações feitas em campo das atividades de uma organização e que foram analisadas a partir de concepções de leitura propostas pelos teóricos da psicolingüística (Smith, 1989,1999) e da Estética da Recepção (Jauss, 2002). Com isso, esperamos contribuir com os estudos sobre leitura e, principalmente, avançar nestas novas possibilidades educativas que nos são, hoje, apresentadas pela sociedade civil e que nos direcionam em busca de uma solução alternativa para um problema que vem afligindo os educadores há décadas no Brasil. Nossa principal hipótese seria que a escola pública poderia beneficiar-se e melhorar o grau de letramento de seus alunos, bem como ampliar o número de leitores proficientes/competentes, se pudesse estabelecer uma parceria com as instituições da sociedade civil/ONGs que já possuem um projeto consistente. Assim, por meio de troca de idéias e experiências, as instituições educacionais não-governamentais poderiam contribuir para o desenvolvimento de uma escola pública de qualidade, sem, no entanto, substituí-la de forma alguma, deixando para o Governo a responsabilidade que lhe cabe.In view of the low level of literacy among students of elementary and middle schools in Brazil and, meanwhile, the astonishing growth of nongovernmental organizations (NGOs) working in the educational field in recent decades, this work tries to establish a connection between those two faces of education in Brazil. We intend to understand the dynamics and influence of NGOs in Brazil, and more specifically, in the field of reading for the development of literacy. Therefore, we did a qualitative study with ethnographic characteristics founded, above all, in remarks made at the field of the activities we saw, which later were examined/analyzed using the reading conceptions proposed by the psycholinguistics scholars (Smith, 1989, 1999) and the Aesthetics of Reception scholars (Jauss, 2002). In this way, we hopefully wish to contribute to the many studies on reading and, in particular, to move forward with these new educational possibilities that are, today, presented by the civil society which is searching for alternative solutions to a problem that has been worrying educators for decades in Brazil. Our main hypothesis would be that public schools could benefit themselves and improve the level of literacy of their students, as well as expand the number of proficient readers / competent, if they could establish a partnership with institutions of civil society / NGOs who already have a consistent project. Thus, by means of an exchange of ideas and experiences, the non-governmental educational institutions could contribute to the development of the quality of our public school, without, however, replace it in any way, leaving what is the governmet responsibility for the government itself.
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Silva, Helena Maria Boschi da. "A constituição da fórmula discursiva "cultura de paz": circulação e produção dos sentidos." Universidade Federal de São Carlos, 2014. https://repositorio.ufscar.br/handle/ufscar/5793.
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Previous issue date: 2014-08-22Universidade Federal de Minas Gerais
Ce travail s inscrit dans le cadre théorique de l Analyse du Discours (AD) française de base énonciative, qui voit la langue comme étant opaque et polysémique et les discours comme des pratiques discursives qui s établissent et se matérialisent dans les dires et les actions, obéissant à des systèmes sémantiques définis historiquement et socialement (cf. MAINGUENEAU, [1984] 2008). Plus spécifiquement, cette recherche a comme base principale la proposition théorico-méthodologique d Alice Krieg-Planque (2003; 2010) sur la notion de formule discursive, qui instrumentalise l analyse de la circulation et de la production de sens de syntagmes qui, linguistiquement figés, se révèlent, dans leurs usages, des lieux de tension, des points de convergence sur diverses questions sociales débattues dans l espace publique. De manière complémentaire, des lectures parallèles dans d autres disciplines contribuèrent à l analyse et à l interprétation des données, parmi lesquelles nous relevons celles liées à la Nouvelle Géographie de Milton Santos (1994; 2000) et ses réflexions sur ce qui est tangent à la période technico-scientifique informationnelle et à l importance des techniques et des pratiques dans notre conception de temps, d espace et, enfin, de société. Nous cherchons à retracer le parcours de ―cultura de paz‖ dans l espace publique brésilien depuis sa genèse institutionnelle jusqu à nos jours, en passant par les conditions de production qui permirent son émergence en 1989, lors du Congrès International sur la Paix dans l Esprit des Hommes, organisé par l UNESCO à Yamoussoukro (Côte d Ivoire), et en vérifiant sa consolidation et son fonctionnement en tant que formule discursive durant la période connue comme étant la Décennie Internationale de la Promotion d'une Culture de la Non-violence et de la Paix au Profit des Enfants du Monde (2001-2010 - ONU). Ainsi, nous souhaitons montrer comment un effet de consensus est produit dans la surface linguistique d un syntagme qui, en circulant, est mobilisé par diverses interprétations qui partent majoritairement du sème central ―vivre ensemble‖ (des personnes, des religions, des partenaires sexuels, avec la nature, etc.). Comme point de départ, nous avons fait un recensement de ses occurrences dans les journaux Folha de S.Paulo, O Estado de S. Paulo et Brasil de Fato, diffusés à l échelle nationale, vérifiant ensuite une circulation plus expressive via une vaste recherche réalisée sur des moteurs de recherche, parmi lesquels principalement Google Search décision qui impliqua des considérations d ordre méthodologique qui firent partie de la recherche. Il convient de souligner que nous considérons plus important la diversité de sources plutôt que la quantité et la répétition d occurrences, considérant les cas de plus grande dispersion comme indices importants de la propagation sémantique de ―cultura de paz‖dans l interdiscours et, par conséquent, de sa condition de formule discursive. De cette manière, nous analysons les différentes interprétations qui caractérisent les discours d acteurs sociaux qui mobilisèrent le syntagme, largement utilisé lors de rencontres et dans des documents internationaux et nationaux, englobant diverses questions politiques et sociales, cherchant à vérifier les pratiques qui le figent et qui sont, en même temps, instituées par lui-même, dans un paradoxe constitutif.
Este trabalho se inscreve no quadro teórico da Análise do Discurso (AD) francesa de base enunciativa, que vê a língua como constitutivamente opaca e polissêmica e os discursos como práticas discursivas que se estabelecem e se materializam nos dizeres e nas ações, obedecendo a sistemas semânticos histórica e socialmente definidos (cf. MAINGUENEAU, [1984] 2008). Mais especificamente, tem como base principal a proposta teórico-metodológica de Alice Krieg-Planque (2003; 2010) acerca da noção fórmula discursiva, instrumentalizadora da análise da circulação e da produção de sentidos de sintagmas que, linguisticamente cristalizados, mostram-se, em seus usos, como lugares de tensão, pontos de convergência de questões sociais diversas debatidas no espaço público. De maneira complementar, contribuíram para a análise e a interpretação dos dados leituras paralelas de outras disciplinas, dentre as quais destacamos as referentes à Geografia Nova de Milton Santos (1994; 2000) em suas considerações no que tange ao período técnico-científico informacional e à importância das técnicas e das práticas em nossa concepção de tempo, de espaço e, enfim, de sociedade. Buscamos rastrear o percurso de ―cultura de paz‖ no espaço público brasileiro desde sua gênese institucional, passando pelas condições de produção que permitiram sua emergência em 1989, no Congresso Internacional sobre a Paz na Mente dos Homens, organizado pela UNESCO em Yamoussoukro (Costa do Marfim), e verificando sua consolidação e seu funcionamento como fórmula discursiva durante o período que ficou conhecido como Década Internacional de uma Cultura de Paz e Não Violência para as Crianças do Mundo (2001-2010 - ONU) até o momento atual, a fim de mostrar como é produzido um efeito de consenso na superfície linguística de um sintagma que, ao circular, é convocado por interpretações diversas que partem majoritariamente do sema central "convivência" (entre pessoas, com a natureza, entre as religiões, entre parceiros sexuais etc.). Como ponto de partida, fizemos um levantamento das ocorrências desse termo nos jornais Folha de S.Paulo, O Estado de S. Paulo e Brasil de Fato, de abrangência nacional, verificando posteriormente uma circulação mais expressiva do sintagma com uma vasta pesquisa realizada em buscadores, dentre os quais, destacadamente, o Google Search decisão que implicou considerações de ordem metodológica que fizeram parte da pesquisa. Cabe enfatizar que consideramos mais importante a diversidade de fontes do que a quantidade e a repetição de ocorrências, entendendo os casos de maior dispersão como indícios importantes do espraiamento semântico de ―cultura de paz‖ no interdiscurso e, portanto, de sua condição de fórmula discursiva. Desse modo, analisamos as diferentes interpretações que caracterizam os discursos de atores sociais que mobilizaram o sintagma, amplamente utilizado em encontros e documentos internacionais e nacionais, abrangendo questões políticas e sociais diversas, procurando verificar as práticas que o cristalizam e que são, ao mesmo tempo, por ele instituídas, num paradoxo constitutivo.
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Baschenis, Félix. "Minimizing resources for regular word transductions." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0810/document.
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Cette thèse a eu pour objectif d'étudier des questions naturelles de définissabilité autour des transducteurs bidirectionnels.Il est bien connu que les transducteurs bidirectionnels définissent une plus grande classe de transductions que celles des transducteurs unidirectionnels. La première question que nous avons étudiée est donc de décider si un transducteur bidirectionnel est définissable par un transducteur unidirectionnel. Il a été montré en 2013 que cette question est décidable pour des transducteurs fonctionnels (nous montrons aussi en paralèlle que cette question devient indécidable si les transducteurs ne sont plus fonctionnels) mais la complexité de la procédure de décision était non-élémentaire.Nous proposons une caractérisation de la "définissabilité par transducteur unidirectionnel" décidable en espace doublement exponentiel. Cette caractérisation est effective en ce sens qu'elle produit en temps triplement exponentiel le transducteur équivalent. De plus, nous avons étudié ce problème aussi pour les transducteurs "sweeping", pour lesquels la procédure de décision et la construction du transducteur équivalent requièrent une exponentielle de moins. Comme nous avons par ailleurs montré qu'il existe des familles de fonctions réalisables de façon unidirectionnelle avec au minimum deux sauts exponentiels, notre procédure est optimale dans le cas "sweeping".Le fait d'avoir particulièrement étudié les transducteurs"sweeping" nous a poussé à étudier d'autres questions dedéfinissabilité~: est-ce qu'un transducteur donné estréalisable par un transducteur sweeping ? Et par un transducteursweeping réalisant au maximum k passages ? Nous montrons que cesquestions sont décidables avec les mêmes complexitésobtenues précédemment. Comme nous avons montré qu'ilexiste une borne sur le nombre de passages nécéssaires pourréaliser avec un transducteur sweeping une transductiondonnée, cela nous permet aussi de minimiser le nombre de passages d'untransducteur sweeping.Enfin nous avons cherché à caractériser la classe destransductions sweeping dans d'autres modèles de transductions,les Streaming String Transducers (SST) et lestransductions MSO. Cela a en autres permis, en établissant unecorrespondance entre le nombre de passages des transducteurssweeping et le nombre de registres d'une sous-classe de SST, deminimiser le nombre de registres pour une classe intéressantede SST. Dans l'ensemble, notre travail a permis de couvrir l'ensembledes relations entre ces modèles, et les questions dedéfinissabilité qui se posent naturellementThe goal of this thesis was to study definability questionsabout finite-state transducers and in particular two-waytransducers. It is known that two-way transducers cover a larger classof transductions than one-way transducers. Then the first question wetackled is the one-way definability problem: is it possible torealize a given two-way transduction by a one-way transducer? Thisproblem was shown to be decidable for functionaltransducers (we also show as a side result that one-way definability becomes undecidable for non-functional transducers) but the decision procedure had non-elementary complexity.We proposed a characterization of one-way definability thatallows us to decide it in double-exponential space, and provide anequivalent one-way transducer of triple-exponential size. We firststudied this question for a restricted class, namely sweepingtransducers, for which the decision procedure and the construction ofthe one-way transducer take one less exponential. For suchtransducers, our procedure is optimal in the sense that we have shownthat there exists a family of functions that are one-way definable andfor which an equivalent one-way transducer requires doubly exponentialsize.The study of sweeping transducers raised other definability questions: Is a given transducer equivalent to some sweeping transducer? And to some sweeping transducer that performs at most k passes? We showed that those questions are decidable and the decision procedure, as well as the equivalent transducer, have the same complexity as in the one-way case. Moreover, as we have shown that there exists a bound on the number of passes required to realize a transduction by a sweeping transducer, we managed to obtain a procedure to minimize the number of passes of a sweeping transducer.Finally we tried to characterize sweeping transducers in other models for regular transductions such as Streaming String transducers (SST) and MSO transductions. As we obtained an equivalence between the number of passes of a sweeping transducer and the number of registers of the equivalent SST we provided a minimization procedure for the number of registers of a large class of SST's. To conclude, our work allowed us to provide a good overall understanding of the definability questions between the models for regular transductions and in particular regarding the resources, whether it is the number of passes (and of course one-way definability is crucial in that aspect) or the number of registers
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Sehnalová, Pavla. "Stabilita a konvergence numerických výpočtů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2011. http://www.nusl.cz/ntk/nusl-261248.
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Tato disertační práce se zabývá analýzou stability a konvergence klasických numerických metod pro řešení obyčejných diferenciálních rovnic. Jsou představeny klasické jednokrokové metody, jako je Eulerova metoda, Runge-Kuttovy metody a nepříliš známá, ale rychlá a přesná metoda Taylorovy řady. V práci uvažujeme zobecnění jednokrokových metod do vícekrokových metod, jako jsou Adamsovy metody, a jejich implementaci ve dvojicích prediktor-korektor. Dále uvádíme generalizaci do vícekrokových metod vyšších derivací, jako jsou např. Obreshkovovy metody. Dvojice prediktor-korektor jsou často implementovány v kombinacích modů, v práci uvažujeme tzv. módy PEC a PECE. Hlavním cílem a přínosem této práce je nová metoda čtvrtého řádu, která se skládá z dvoukrokového prediktoru a jednokrokového korektoru, jejichž formule využívají druhých derivací. V práci je diskutována Nordsieckova reprezentace, algoritmus pro výběr proměnlivého integračního kroku nebo odhad lokálních a globálních chyb. Navržený přístup je vhodně upraven pro použití proměnlivého integračního kroku s přístupe vyšších derivací. Uvádíme srovnání s klasickými metodami a provedené experimenty pro lineární a nelineární problémy.
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Rennison, Susan M. "Student engagement with formal lectures on the MPharm programme at the University of Portsmouth." Thesis, University of Portsmouth, 2011. https://researchportal.port.ac.uk/portal/en/theses/student-engagement-with-formal-lectures-on-the-mpharm-programme-at-the-university-of-portsmouth(6895c161-da05-462b-a154-151b5c1b198c).html.
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Lectures have been used as a teaching method for many centuries and remain a standard on most university courses. More than twice as many teaching hours are devoted to lectures on the MPharm course at the University of Portsmouth than to all other teaching methods. Lecturers frequently express concern however, at low levels of attendance at lectures and, during 2007-8, registers were taken at approximately 15% of MPharm lectures. The aims of the research were to ascertain whether any correlation existed between lecture attendance and exam performance, and to investigate both lecturers’ and students’ attitudes towards and opinions of lectures as a method of teaching. A Scoping Exercise was used to put the work into context with other UK Schools of Pharmacy (SoPs).
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Chakir, El-Alaoui El-Houcine. "Les métriques sous riemanniennes en dimension 3." Rouen, 1996. http://www.theses.fr/1996ROUES055.
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Cette thèse est consacrée essentiellement à l'étude des métriques sous-riemanniennes dites de contact en dimension 3. Bien que cette étude soit faite localement, on observe des différences fondamentales avec les métriques riemanniennes. En particulier, les lieux conjugue et cut d'un point p contiennent p dans leur adhérence. Ce travail se divise en deux parties : 1. On montre, dans un premier temps, qu'on peut associer à toute métrique sous-riemannienne de contact formelle une forme normale formelle. Ensuite, dans un deuxième temps, on montre que cette forme normale est actuellement lisse (i. E. C, c) si la métrique l'est. Aussi, cette forme normale permet de définir des invariants associés aux métriques sous-riemanniennes de contact. 2. A l'aide de cette forme normale on prouve que l'application exponentielle d'une métrique sous-riemannienne de contact générique est déterminée par un certain jet fini de la métrique. Et on en déduit une classification générique de ces singularités (i. E. Lieux conjugués).
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Alzetto, Florent. "Contribution à la théorie des gaz de fermions froids." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00808195.
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Cette thèse traite du problème à N corps dans les gaz de fermions ultra froids. La première partie est dédiée aux collisions à 3 et 4 fermions en interaction de contact dans le vide. Nous montrons comment calculer diagrammatiquement l'amplitude de diffusion dimère-fermion et la longueur de diffusion dimère-dimère. Par un développement en puissances du rapport des masses et à basse énergie, nous obtenons une expression analytique de l'amplitude de diffusion dimère-fermion en onde s dans la limite de grand rapport des masses entre deux espèces. En utilisant la même méthode, nous obtenons un développement analytique de la longueur de diffusion dimère-dimère en onde s dans la limite de grand rapport des masses entre deux espèces. Dans la seconde partie, nous considérons le problème à N corps dans la transition BEC-BCS. Nous dérivons la formule de Tan dans la limite d'interaction de contact, puis nous généralisons ce résultat à des mélanges bosoniques ainsi qu'à 2 dimensions. Nous calculons également l'équation d'état à l'unitarité dans l'approximation de la matrice T en utilisant 3 formules exactes pour l'énergie. Finalement, nous obtenons un développement de l'équation d'état en puissances de la densité dans la limite BEC. Le résultat est obtenu, dans le cas général où les deux espèces ont des masses différentes et sont présentes en quantité différente, en prenant en compte diagrammatiquement les vertex de diffusion à 3 et 4 corps exacts.
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Zemek, Petr. "Jednostranné gramatiky s nahodilým kontextem." Doctoral thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2014. http://www.nusl.cz/ntk/nusl-261236.
Full textAbstract:
Tato disertační práce zavádí jednostranné gramatiky s nahodilým kontextem jako řízené gramatiky založené na bezkontextových gramatikách. V těchto gramatikách je ke každému pravidlu přiřazena množina povolujících symbolů a množina zakazujících symbolů a množina pravidel je rozdělena na množinu levých pravidel s nahodilým kontextem a množinu pravých pravidel s nahodilým kontextem . Levým pravidlem s nahodilým kontextem lze přepsat neterminál pokud se všechny povolující symboly vyskytují vlevo od přepisovaného neterminálu a žádný zakazující symbol tam přítomen není. Pravé pravidlo s nahodilým kontextem lze aplikovat analogicky, ale ona kontrola na přítomnost a nepřítomnost symbolů je provedena doprava od přepisovaného neterminálu. Práce je rozdělena na tři části. První část uvádí motivaci za zavedením jednostranných gramatik s nahodilým kontextem a umisťuje materiál pokrytý v této práci do vědeckého kontextu. Poté dává přehled základů teorie formálních jazyků a některých méně známých oblastí, jejichž znalost je nutná pro pochopení studovaného tématu. Druhá část tvoří jádro práce. Formálně definuje jednostranné gramatiky s nahodilým kontextem a studuje je z mnoha pohledů. Mezi studovaná témata patří generativní síla, vztah k jiným typům gramatik, redukce, normální formy, nejlevější derivace, zobecněné a LL verze těchto gramatiky. Třetí část této práce zakončuje diskusi několika poznámkami. Mezi ně patří poznámky týkající se aplikovatelnosti zavedených gramatik v praxi, bibliografie a otevřených problémů.
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Utgof, Darja. "The Perception of Lexical Similarities Between L2 English and L3 Swedish." Thesis, Linköping University, Department of Culture and Communication, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15874.
Full textAbstract:
The present study investigates lexical similarity perceptions by students of Swedish as a foreign language (L3) with a good yet non-native proficiency in English (L2). The general theoretical framework is provided by studies in transfer of learning and its specific instance, transfer in language acquisition.
It is accepted as true that all previous linguistic knowledge is facilitative in developing proficiency in a new language. However, a frequently reported phenomenon is that students see similarities between two systems in a different way than linguists and theoreticians of education do. As a consequence, the full facilitative potential of transfer remains unused.
The present research seeks to shed light on the similarity perceptions with the focus on the comprehension of a written text. In order to elucidate students’ views, a form involving similarity judgements and multiple choice questions for formally similar items has been designed, drawing on real language use as provided by corpora. 123 forms have been distributed in 6 groups of international students, 4 of them studying Swedish at Level I and 2 studying at Level II.
The test items in the form vary in the degree of formal, semantic and functional similarity from very close cognates, to similar words belonging to different word classes, to items exhibiting category membership and/or being in subordinate/superordinate relation to each other, to deceptive cognates. The author proposes expected similarity ratings and compares them to the results obtained. The objective measure of formal similarity is provided by a string matching algorithm, Levenshtein distance.
The similarity judgements point at the fact that intermediate similarity values can be considered problematic. Similarity ratings between somewhat similar items are usually lower than could be expected. Besides, difference in grammatical meaning lowers similarity values significantly even if lexical meaning nearly coincides. Thus, the obtained results indicate that in order to utilize similarities to facilitate language learning, more attention should be paid to underlying similarities.
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Yang, Mingming. "Development of the partition of unity finite element method for the numerical simulation of interior sound field." Thesis, Compiègne, 2016. http://www.theses.fr/2016COMP2282/document.
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Dans ce travail, nous avons introduit le concept sous-jacent de PUFEM et la formulation de base lié à l'équation de Helmholtz dans un domaine borné. Le processus d'enrichissement de l'onde plane de variables PUFEM a été montré et expliqué en détail. L'idée principale est d'inclure une connaissance a priori sur le comportement local de la solution dans l'espace des éléments finis en utilisant un ensemble de fonctions d'onde qui sont des solutions aux équations aux dérivées partielles. Dans cette étude, l'utilisation des ondes planes se propageant dans différentes directions a été favorisée car elle conduit à des algorithmes de calcul efficaces. En outre, nous avons montré que le nombre de directions d'ondes planes dépend de la taille de l'élément PUFEM et la fréquence des ondes à la fois en 2D et 3D. Les approches de sélection de ces ondes planes sont également illustrés. Pour les problèmes 3D, nous avons étudié deux systèmes de distribution des directions d'ondes planes qui sont la méthode du cube discrétisé et la méthode de la force de Coulomb. Il a été montré que celle-ci permet d'obtenir des directions d'onde espacées de façon uniforme et permet d'obtenir un nombre arbitraire d'ondes planes attachées à chaque noeud de l'élément de PUFEM, ce qui rend le procédé plus souple.Dans le chapitre 3, nous avons étudié la simulation numérique des ondes se propageant dans deux dimensions en utilisant PUFEM. La principale priorité de ce chapitre est de venir avec un schéma d'intégration exacte (EIS), résultant en un algorithme d'intégration rapide pour le calcul de matrices de coefficients de système avec une grande précision. L'élément 2D PUFEM a ensuite été utilisé pour résoudre un problème de transmission acoustique impliquant des matériaux poreux. Les résultats ont été vérifiés et validés par la comparaison avec des solutions analytiques. Les comparaisons entre le régime exact d'intégration (EIS) et en quadrature de Gauss ont montré le gain substantiel offert par l'EIE en termes de temps CPU.Une 3D exacte Schéma d'intégration a été présenté dans le chapitre 4, afin d'accélérer et de calculer avec précision (jusqu'à la précision de la machine) des intégrales très oscillatoires découlant des coefficients de la matrice de PUFEM associés à l'équation 3D Helmholtz. Grâce à des tests de convergence, un critère de sélection du nombre d'ondes planes a été proposé. Il a été montré que ce nombre ne pousse que quadratiquement avec la fréquence qui donne lieu à une réduction drastique du nombre total de degrés de libertés par rapport au FEM classique. Le procédé a été vérifié pour deux exemples numériques. Dans les deux cas, le procédé est représenté à converger vers la solution exacte. Pour le problème de la cavité avec une source de monopôle située à l'intérieur, nous avons testé deux modèles numériques pour évaluer leur performance relative. Dans ce scénario, où la solution exacte est singulière, le nombre de directions d'onde doit être choisie suffisamment élevée pour faire en sorte que les résultats ont convergé.Dans le dernier chapitre, nous avons étudié les performances numériques du PUFEM pour résoudre des champs sonores intérieurs 3D et des problèmes de transmission d'ondes dans lequel des matériaux absorbants sont présents. Dans le cas particulier d'un matériau réagissant localement modélisé par une impédance de surface. Un des critères d'estimation d'erreur numérique est proposé en considérant simplement une impédance purement imaginaire qui est connu pour produire des solutions à valeur réelle. Sur la base de cette estimation d'erreur, il a été démontré que le PUFEM peut parvenir à des solutions précises tout en conservant un coût de calcul très faible, et seulement environ 2 degrés de liberté par longueur d'onde ont été jugées suffisantes. Nous avons également étendu la PUFEM pour résoudre les problèmes de transmission des ondes entre l'air et un matériau poreux modélisé comme un fluide homogène équivalentIn this work, we have introduced the underlying concept of PUFEM and the basic formulation related to the Helmholtz equation in a bounded domain. The plane wave enrichment process of PUFEM variables was shown and explained in detail. The main idea is to include a priori knowledge about the local behavior of the solution into the finite element space by using a set of wave functions that are solutions to the partial differential equations. In this study, the use of plane waves propagating in various directions was favored as it leads to efficient computing algorithms. In addition, we showed that the number of plane wave directions depends on the size of the PUFEM element and the wave frequency both in 2D and 3D. The selection approaches for these plane waves were also illustrated. For 3D problems, we have investigated two distribution schemes of plane wave directions which are the discretized cube method and the Coulomb force method. It has been shown that the latter allows to get uniformly spaced wave directions and enables us to acquire an arbitrary number of plane waves attached to each node of the PUFEM element, making the method more flexible.In Chapter 3, we investigated the numerical simulation of propagating waves in two dimensions using PUFEM. The main priority of this chapter is to come up with an Exact Integration Scheme (EIS), resulting in a fast integration algorithm for computing system coefficient matrices with high accuracy. The 2D PUFEM element was then employed to solve an acoustic transmission problem involving porous materials. Results have been verified and validated through the comparison with analytical solutions. Comparisons between the Exact Integration Scheme (EIS) and Gaussian quadrature showed the substantial gain offered by the EIS in terms of CPU time.A 3D Exact Integration Scheme was presented in Chapter 4, in order to accelerate and compute accurately (up to machine precision) of highly oscillatory integrals arising from the PUFEM matrix coefficients associated with the 3D Helmholtz equation. Through convergence tests, a criteria for selecting the number of plane waves was proposed. It was shown that this number only grows quadratically with the frequency thus giving rise to a drastic reduction in the total number of degrees of freedoms in comparison to classical FEM. The method has been verified for two numerical examples. In both cases, the method is shown to converge to the exact solution. For the cavity problem with a monopole source located inside, we tested two numerical models to assess their relative performance. In this scenario where the exact solution is singular, the number of wave directions has to be chosen sufficiently high to ensure that results have converged. In the last Chapter, we have investigated the numerical performances of the PUFEM for solving 3D interior sound fields and wave transmission problems in which absorbing materials are present. For the specific case of a locally reacting material modeled by a surface impedance. A numerical error estimation criteria is proposed by simply considering a purely imaginary impedance which is known to produce real-valued solutions. Based on this error estimate, it has been shown that the PUFEM can achieve accurate solutions while maintaining a very low computational cost, and only around 2 degrees of freedom per wavelength were found to be sufficient. We also extended the PUFEM for solving wave transmission problems between the air and a porous material modeled as an equivalent homogeneous fluid. A simple 1D problem was tested (standing wave tube) and the PUFEM solutions were found to be around 1% error which is sufficient for engineering purposes
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Bessit, C. S. "South African Formula One Grand Prix: a dream or nightmare." Thesis, 2008. http://hdl.handle.net/10210/261.
Full textAbstract:
In 2004 a group of South African based companies submitted a bid to the Formula One Management to host a South African Formula One Grand Prix, from 2009 in Cape Town. The group approached the government to establish a public-private partnership, due to the: • escalating hosting and infrastruture development cost, resulting in very few Formula One Grand Prix host countries undertaking hosting without government involvement; and • believe that the economic benefits of hosting the event would stretch further than the business realm of its members, in particulary in the toursim industry. A literature review of the hallmark sporting events revealed that sport has become a major business industry and a perceived tool for improving the economies of host countries, regions or cities. This has empowered the owners of mega sporting events to generate bidding wars amongst prospective host countries. Paying the price has commonly led local event organisers to motivate the allocation of public funding, emphasising the indirect economic benefits that the event will generate. This motivation is though seldom accompanied by a detailed and independent economic impact assessment, to substantiate the claimed benefits. The findings of this study based on a literature survey indicate that: (i) There is a relationship between hallmark events, such as the FIA Formula One Grand Prix Championship, and tourism. However, the increased tourism post the event may be exaggerated, either with regard to the percentage growth or effective period or a combination thereof. If increased tourism is the basis for the subsidy it should be noted that the Western Cape, in particular Cape Town, is already SA’s premier tourist destination. Whereas cities like Johannesburg and Welkom, that have existing motor racing facilities requiring upgrading, do not have Cape Town’s tourism icons. It could further be argued that the tourists visiting SA for the F1 GP event would more likely tour to the Western Cape than vice versa. (ii) Although the SA F1 Bid Company has provided indicative numbers with regard to job creation and expected tourists as a result of the event, they rely on industry norms and experiences with other current F1 GP event host countries rather than critically assessing the economic and social impact of the event in a South African context. The overall lack of a detailed economic impact assessment and the reluctant feedback from the Government has made it impossible to assess conclusively whether the event will have positively or negatively impact on South Africa. However, literature sources reveal that in the majority of cases and mainly for the government partner, the hosting mega sporting events do not yield a profitable return.Mr. S.M. Nchabaleng