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1
Fuller, Christopher. "Tracing environmental processes using cold dust with the Herschel Space Observatory". Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/70414/.
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This thesis presents an investigation into the effect of environment on a galaxy's ISM. I have used new data from the Herschel Space Observatory, which detects the peak of far-infrared (FIR) emission from cold dust (20 K) in nearby galaxies. Using data from the Herschel Fornax Cluster Survey (HeFoCS) and the Herschel Astrophysical Large Area Terahertz Survey (H-ATLAS) I have measured the FIR fluxes of galaxies in the nearby Fornax cluster and Coma region. In order to measure these FIR fluxes I used the optical shape and size of galaxies as a starting point. In the case of Fornax there was already a high quality optical catalogue, the Fornax Cluster Catalogue (FCC; Ferguson, 1989). However, in the case of the Coma cluster and filament I created my own using data from the SDSS spectroscopic survey, selecting galaxies based on position and velocity. Thus, creating the Coma Cluster Catalogue (CCC) and Coma Filament Catalogue (CFC). For galaxies detected in at least 3 and 5 Herschel bands for the HeFoCS and H-ATLAS galaxies, respectively, I fitted a modified blackbody with a fixed beta emissivity index of 2, yielding dust masses and temperatures for 22 and 198 HeFoCS and H-ATLAS galaxies, respectively. All Early-type galaxies showed a lower mean dust mass and hotter temperature than found for late-types. When comparing early-type galaxies across all sampled environments, their FIR properties are found to be statistically identical. I only find a significant difference in dust-to-stellar mass for late-type galaxies between the filament and a field sample. This may suggest that the effect of the cluster and filament is more subtle than previously thought and that the evolution of the ISM components has mostly taken place well before the cluster was assembled. I use a method to compare multiple parameters for the Coma cluster and filament galaxies and how each is a�ected by local environmental density. Late types show a moderate change in most parameters with the exception of gas-to-stars, which is strongly affected by environmental density. I suggest that late-types' lower sSFRs and higher stellar masses in the cluster when compared to the filament indicate that the galaxies in the cluster formed earlier and are hence more evolved. In order to understand how the baryonic components of the galaxies change as a whole between the cluster and filament I have created mass functions. Using Schechter function fits to stellar, gas and dust mass density ratios for the Coma cluster and filament I calculated the ratio of gas-to-stellar and dust-to-stellar mass densities for each environment finding that Virgo, Fornax, Coma and the filament were gas deficient when compared to the field, but all their dust mass functions appeared identical. This further demonstrates that dust is largely invariant to environment, whereas, gas is affected well before entry into the cluster.
2
Torlesse, Harriet. "Parasitic infection and anaemia during pregnancy in Sierra Leone". Thesis, University of Glasgow, 1999. http://theses.gla.ac.uk/7014/.
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The role of intestinal nematode infections in the aetiology of iron deficiency and anaemia in pregnant women was investigated in peri-urban and rural areas of Western Sierra Leone. A randomised placebo-controlled field trial was carried out to evaluate the efficacy of a single course of albendazole (400 mg) and daily iron-folate supplements (36 g iron and 5 mg folate), administered after the first trimester, as control interventions for intestinal nematode infections and anaemia during pregnancy. At baseline, in the first trimester of pregnancy, the prevalence (and geometric mean intensity) of intestinal nematodes was as follows: Ascaris lumbricoides 21.1% (267 eggs per gram); Necator americanus 66.5% (191 epg); and Trichuris trichiura 71.9% (93 epg). Chronic undernutrition (height < 150 cm) and chronic energy deficiency (body mass index < 18.5 kg/m2) was found in 5.4% and 8.2% of women respectively. Anaemia (Hb < 110 g/l) was diagnosed in 58.7% of women and associated with iron deficiency (serum ferritin < 20 μg/l) in 21.2% of women. Iron deficiency is likely to have a dietary basis in these women. The dietary iron intake was predominantly non-haem, and was estimated to supply less than 1 g of absorbable iron daily. High fertility and closely spaced pregnancies placed additional stress on iron stores. The findings of this study indicate that anthelminthic treatment should be included in strategies to control maternal anaemia in Western Sierra Leone. It is recommended that pregnant women routinely receive a single course of anthelminthics after the first trimester, alongside daily iron-folate supplements, to minimise the decline in maternal Hb concentration during pregnancy. These interventions could be implemented through the existing primary health care system, although the use of traditional birth attendants should be investigated as a means of improving compliance and coverage. The implications of these findings for public health policy in other antenatal populations will depend on the local epidemiology of intestinal nematode infections and on the extent of underlying maternal iron deficiency and anaemia.
3
Bamarouf, Yasser Ahmad A. "Enhancing the e-commerce experience through haptic feedback interaction". Thesis, Durham University, 2012. http://etheses.dur.ac.uk/7014/.
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The sense of touch is important in our everyday lives and its absence makes it difficult to explore and manipulate everyday objects. Existing online shopping practice lacks the opportunity for physical evaluation, that people often use and value when making product choices. However, with recent advances in haptic research and technology, it is possible to simulate various physical properties such as heaviness, softness, deformation, and temperature. The research described here investigates the use of haptic feedback interaction to enhance e-commerce product evaluation, particularly haptic weight and texture evaluation. While other properties are equally important, besides being fundamental to the shopping experience of many online products, weight and texture can be simulated using cost-effective devices. Two initial psychophysical experiments were conducted using free motion haptic exploration in order to more closely resemble conventional shopping. One experiment was to measure weight force thresholds and another to measure texture force thresholds. The measurements can provide better understanding of haptic device limitation for online shopping in terms of the availability of different stimuli to represent physical products. The outcomes of the initial psychophysical experimental studies were then used to produce various absolute stimuli that were used in a comparative experimental study to evaluate user experience of haptic product evaluation. Although free haptic exploration was exercised on both psychophysical experiments, results were relatively consistent with previous work on haptic discrimination. The threshold for weight force discrimination represented as downward forces was 10 percent. The threshold for texture force discrimination represented as friction forces was 14.1 percent, when using dynamic coefficient of friction at any level of static coefficient of friction. On the other hand, the comparative experimental study to evaluate user experience of haptic product information indicated that haptic product evaluation does not change user performance significantly. However, although there was an increase in the time taken to complete the task, the number of button click actions tended to decrease. The results showed that haptic product evaluation could significantly increase the confidence of shopping decision. Nevertheless, the availability of haptic product evaluation does not necessarily impose different product choices but it complements other selection criteria such as price and appearance. The research findings from this work are a first step towards exploring haptic-based environments in e-commerce environments. The findings not only lay the foundation for designing online haptic shopping but also provide empirical support to research in this direction.
4
Fabbri, Alan. "Studio degli effetti della stimolazione transcranica a corrente diretta (tdcs) sui potenziali evocati visivi steady state". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7014/.
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I potenziali evocati visivi steady state (ssVEPs) consistono in una perturbazione dell’attività elettrica cerebrale spontanea e insorgono in presenza di stimoli visivi come luci monocromatiche modulate sinusoidalmente. Nel tracciato EEG si instaurano oscillazioni di piccola ampiezza ad una frequenza pari a quella dello stimolo.
L’analisi nel dominio delle frequenze permette di mettere in evidenza queste oscillazioni che si presentano con un picco ben distinto in corrispondenza della frequenza dello stimolo.
L’obiettivo di questo lavoro è quello di capire se la stimolazione transcranica in corrente continua (tDCS) ha degli effetti a breve e a medio termine sui SSVEPs. Si è studiato gli effetti della stimolazione anodica utilizzando un montaggio di stimolazione extra-cefalico (anodo posizionato su Oz e catodo sul braccio destro).
L’esperimento prevede il flickering a 3 frequenze di interesse (12, 15, 20 Hz) di 3 quadrati colorati (rosso e giallo) su sfondo nero. Sono state quindi messe a confronto 4 condizioni operative: baseline, stimolazione sham, stimolazione anodica, condizione Post Anodica.L’esperimento è stato sottoposto a 6 soggetti di età tra i 21 e i 51 anni. Il segnale è stato acquisito da due canali bipolari localizzati nella regione occipitale (O1-PO7 e O2-PO8). È stato effettuato un filtraggio tra 3-60 Hz e a 50 Hz. Si sono stimate le PSD normalizzate rispetto alla condizione di riposo in baseline e le potenze nell’intorno della frequenze di interesse (12,15,20 Hz). I dati chiaramente artefattuali sono stati scartati mediante un’analisi esplorativa. Da qui è stato deciso di non includere nella statistica la stimolazione anodica. L’analisi statistica considera tre aspetti: effetto stimolazione, effetto frequenza ed effetto colore. In alcune configurazioni la stimolazione post anodica si è rivelata significativamente differente con ranghi medi delle colonne inferiori alle altre stimolazioni. Non ci sono differenze significative tra le frequenze. Il colore giallo è risultato significativamente maggiore al colore rosso.
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Mattioli, Elena <1983>. "Negoziazioni intergenerazionali dell'autonomia abitativa in contesti di working class". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7014/.
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Nell’ambito della riflessione sui processi di riproduzione e trasmissione intergenerazionale delle disuguaglianze sociali, la presente tesi dottorale propone un’analisi in prospettiva intersezionale dei percorsi verso l’indipendenza abitativa dei giovani bolognesi di origine popolare, e il ruolo svolto dalle loro famiglie in questi percorsi. Nell’approfondimento teorico si offre una ricostruzione del dibattito sociologico nazionale e internazionale sul tema delle disuguaglianze sociali e abitative delle giovani generazioni, nonché dello studio della classe sociale e i principali approcci presenti in letteratura. La ricerca sul campo si concentra, in particolare, sui modi in cui le famiglie appartenenti ad una determinata classe sociale, intesa nel senso conferito al termine da Bourdieu, negoziano e sostengono la transizione all’indipendenza abitativa dei loro figli. L’approfondimento empirico consiste in una ricerca qualitativa longitudinale retrospettiva, condotta nel bolognese nel 2013-2014 su un campione di famiglie working class. Ai giovani-adulti coinvolti e ai loro genitori è stato chiesto di ricostruire le loro biografie attraverso lo strumento delle life histories. La ricerca evidenzia il delinearsi di “micro sistemi economici” familiari specifici e creativi. Le molteplici forme di sostegno genitoriale nei percorsi di autonomizzazione dei figli, individuate nel corso dell’analisi del materiale raccolto, si innestano quindi all’interno di un più ampio sistema di supporto intergenerazionale, che continua anche dopo l’uscita dalla famiglia di origine, a conferma dello stretto legame che caratterizza le famiglie italiane. Nello studio una particolare attenzione viene rivolta alle logiche di legittimazione del sostegno genitoriale, adottate dalle famiglie per orientare i propri interventi di aiuto. Infine, mettendo a confronto la concezione di indipendenza dei giovani adulti con quella dei loro genitori, l’indagine rileva l’esistenza di una apparente contraddizione tra le rappresentazioni dell’indipendenza e dell’autonomia abitativa e i comportamenti attuati nella vita quotidiana, contraddizione che trova una risoluzione nella negoziazione, tra le due diverse generazioni, del concetto stesso di indipendenza.The present doctoral thesis offers an intersectional analysis of the housing pathways of working class young people in Bologna, and of the role played by their family in the transition towards independent living, within a broader reflection on processes of reproduction and intergenerational transmission of social inequalities. The first part sets out the national and international sociological debate on youth’ social and housing inequalities, as well as the debate on social class. In the second part, the focus is on the empirical research. In particular, questions are raised on how families belonging to a particular social class, as understood in Bourdieu’s terms, negotiate and support the transition to independent living of their adult-children. The empirical study consists of a retrospective longitudinal qualitative research, carried out in Bologna in 2013-2014 on a sample of working-class families. Through life histories, young-adults and their parents were asked to reconstruct their biographies and housing experiences. The research highlights the emergence of specific and creative "micro-economic family systems". Through analysis on the collected materials, it was possible to identify several forms of parental support in young-adults’ pathways towards independent living, embedded in a wider system of intergenerational support, which continues even after leaving the family nest and confirms once again the strong ties characterizing Italian families. In the study, particular attention is given also to logics of legitimacy of parental support, underlying working class families' decisions of helping their adult-children. Finally, by comparing young adults’ idea of independence with that of their parents, the research reveals an apparent contradiction between representations of autonomy and independent living and everyday life practices, which is being solved by negotiating, between the two generations taken in exam, the meaning of independence itself.
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Maquelin, Kyra Nicole. "Platelet activation and microparticles in the pericardial cavity during cardiopulmonary bypass". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2003. http://dare.uva.nl/document/70014.
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Yoon, Lana E. (Lana Eunjoo) 1972. "Mixed culture : experienced through a center for the mind and body". Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/70714.
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Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1998.Includes bibliographical references (p. 87-89).
The term "Mixed Culture" refers to the sociological condition experienced by those who have a cultural heritage which is different from the culture in which they were raised or live in. In this mixture, there are characteristics from either that remain distinct, yet coexist. I identify myself and my culture as an American, but I was also raised with and practice certain traditional Korean customs which were passed down to me by family. I find that I am constantly moving between two states, where I identify with either of my two cultures, sometimes distinctly separate or at other times both concurrently. This constant moving between two different states or cultures, as well as being able to simultaneously identify with two different positions describes the experience of being part of a mixed culture. This thesis takes these definitions and sociological characteristics as the starting point to defining Asian American architecture. Instead of continuing to base Asian American architecture on applied decorations, the architecture will draw upon the spatial characteristics found in traditional architectural examples, as well as juxtapose different elements within one building. This center and hotel has three components: a health center offering instruction and treatments based upon East Asian medicinal practices such as acupuncture, herbal pharmacology, massage, yoga, and tai chi, a tea cafe for service to the street and a small hotel whose residents will be registered users of the center from outside of the Bay Area. In addition to the architectural elements and the program, the site, located in between Nob Hill and the historic core of Chinatown in San Francisco, California, acts as another arena to address the mixing between two different neighborhoods.
by Lana E. Yoon.
M.Arch.
8
Spikol, Daniel. "Digital diorama". Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/70214.
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Thesis (M.S.V.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1992.Includes bibliographical references (leaves 57-58).
Digital Diorama may be briefly presented as: a historical exploration of the vision devices, performances, and installations of the nineteenth century, and their influences on the project. These histories of the magic lantern, the panorama, and the diorama are investigated in relation to forming a context for creating an interactive environment with digital video on a personal computer. Critical theories of the late twentieth century are used to illustrate the change of vision from classical to modern and present a framework for understanding the potentials of digital technology.
by Daniel Spikol.
M.S.V.S.
9
Francis, Nikolas A. (Nikolas Alejandro). "Auditory task-dependent control of human cochlear responses to sound". Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/70814.
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Thesis (Ph. D.)--Harvard-MIT Program in Health Sciences and Technology, 2012.Vita. Cataloged from PDF version of thesis.
Includes bibliographical references.
Accurate sensory perception in noisy environments requires physiological mechanisms that reduce sensory interference. In the auditory system, it has been hypothesized that attentional control of cochlear responses to sound facilitates listening in noisy environments by modulating the effects of medial olivocochlear (MOC) efferent activity in the cochlea. However, conclusive support for this hypothesis has been elusive over the past 50 years. We investigated this issue using a novel experimental paradigm in which human subjects performed auditory tasks on transient sounds presented in acoustic noise, while we recorded click-evoked otoacoustic emissions (CEOAEs) in the task ear. CEOAEs are low-level sounds that are generated in the cochlea, recorded in the ear-canal and provide a non-invasive measure of the MOC effects on cochlear mechanical responses to sound. Our results show clear evidence that attending to transient sounds in noise caused an increase in MOC activity during the auditory task. MOC activity was greater on trials with correct responses compared to trials with incorrect responses, which provides evidence that the MOC activity brought about a perceptually beneficial change in cochlear operation. In addition, the task-dependent MOC activity scaled with auditory task difficulty and varied with task instructions. These results indicate the existence of a dynamic task-dependent interaction between the cochlea and the brain that has the function of optimizing cochlear operation to enhance auditory perceptual accuracy in noisy acoustic environments.
by Nikolas A. Francis.
Ph.D.
10
Turkel, Joel A. (Joel Abram) 1969. "Arctic house". Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/70314.
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Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1999.Includes bibliographical references (p. 67-[69]).
Currently available housing in the Arctic is limited to solutions that have been adapted from designs for less severe climates. This thesis has developed a new manner of residential construction designed specifically for the Arctic climate and culture. The system invented ensures a variety of building options for traditional cultural requirements, while also improving on the level of amenity expected of contemporary dwellings. It has developed a sustainable and responsible building system that represents definite and quantifiable improvements through the use of appropriate technologies.
by Joel A. Turkel.
M.Arch.
11
Sengupta, Annis Whitlow. "Politics on parade : immigration, ethnicity and national identity in Chicago, IL". Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/70414.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 2012.Cataloged from PDF version of thesis.
Includes bibliographical references.
Parades are many things. They are treasured annual traditions, community gatherings, expressions of identity and pride. Parades interrupt the daily flow of city life, rerouting traffic, crowding sidewalks and public transportation, and interrupting business activities. Parades are revealing. They are a stage for the performance of identities and interests that are otherwise invisible to the average city resident. Parades are deceptive. They present an image of unity and order that belies the messy and contested nature of collective identity formation. They appear to be emergent cultural practices, but they are more likely aggregate culture than to produce it. They embody stable relationships as much as they inspire spontaneous participation. Parades are public expressions of communities' identities, interests, and values. As such they are like distorted mirrors reflecting the hopes and fears of not just one community but many communities and ultimately of the larger society. This dissertation examines one type of parade - the American ethnic parade - to understand the shifting meaning of ethnicity and nationalism in Chicago, Illinois, from its origins in the nineteenth century to its present twenty-first century context. The question driving this research is how national identities can accommodate change and incorporate new members (such as immigrants and minorities). More specifically, it examines what ethnic parades in one American city can tell us about this process. An in-depth historical analysis uses the history of ethnic parades in Chicago to explore the shifting politics of immigrant incorporation from 1860 until 1990. Drawing on thirty-seven interviews conducted with parade organizers, local scholars, and city officials as well as observation of parades, parade planning meetings and other community events, analysis of Chicago's contemporary ethnic parades illuminates the myriad functions of ethnic during Chicago's transition to a global city. Specifically, it explores how expressions of hybridized nationalism in ethnic parades disguise a complex interplay among local political integration, economic advancement, and transnational political activism that is shaping Chicago's local ethnic communities.
by Annis Whitlow Sengupta.
Ph.D.
12
Bolduc, Sara. "Évaluation des différences inter-régionales de la diète de l'omble chevalier anadrome (Salvelinus alpinus) au Nunavik et ses liens avec les indicateurs de sa qualité nutritive". Master's thesis, Université Laval, 2021. http://hdl.handle.net/20.500.11794/70314.
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Peruffo, Luiza. "Integração monetária e financeira na América do Sul : a perspectiva brasileira em um sistema internacional multimonetário". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/70014.
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A ideia da criação de uma moeda única remonta às origens do Mercosul e perpassa, ainda hoje, o imaginário de diversas lideranças políticas de países da América do Sul (UNCTAD, 2007; BICHARA, CUNHA e LÉLIS, 2008; DEOS, MENDONÇA e WEGNER, 2010). A despeito da distância entre as intenções e a prática, o período recente está repleto de novidades. A crise financeira global testou os limites da liderança estadunidense e do modelo neoliberal. Em seu rastro cresceu o poder das nações emergentes. O G8 perdeu prestígio para o G20. Antes da crise, o forte crescimento da economia mundial, sob a liderança chinesa, propiciou a elevação no preço das commodities, favorecendo a emergência de um ciclo de crescimento com melhoria na situação financeira externa e interna da maioria das economias sul-americanas. Se, depois da crise da dívida externa dos anos 1980, a instabilidade e a divergência cíclica marcaram a interação entre os países sul-americanos, a primeira década do século XXI testemunhou uma convergência mais virtuosa. Neste contexto, foram ganhando força novas iniciativas de cooperação monetária e financeira, com destaque para a proposta do Banco do Sul, a criação do Fundo para Convergência Estrutural do Mercosul e do Sistema de Pagamentos em Moedas Locais, dentre outras iniciativas. Portanto, parece estar se criando um espaço de inovação em meio a um cenário internacional marcado pela “ascensão do resto” e pela decadência relativa dos Estados Unidos. Considerando-se o caso sul-americano, a partir da ótica brasileira, esta pesquisa pretende analisar a possibilidade, os custos e as vantagens de se aprofundar a cooperação monetária e financeira em nível regional. Assumindo que não há horizonte de reformas substanciais no sistema monetário internacional no curto prazo (UNCTAD, 2007; OCAMPO, 2006) e observando-se uma tendência de emersão de um sistema multimonetário (EICHENGREEN, 2011), o objetivo geral é o de responder as seguintes perguntas: (i) seria viável o surgimento de um subsistema monetário sul-americano centrado na economia brasileira? (ii) dadas as assimetrias regionais, como se pode avançar na integração sem comprometer o desenvolvimento nacional? e (iii) os mecanismos de cooperação monetária e financeira hoje existentes podem garantir o avanço na integração regional?The idea of creating a single currency dates back to the origins of Mercosur and still pervades the imagery of various political leaders in South America (UNCTAD, 2007; BICHARA, CUNHA and LÉLIS, 2008; DEOS, MENDONÇA and WEGNER, 2010). Despite the distance between intentions and practice, the recent period is packed with new features. The global financial crisis has tested the limits of American leadership and the neoliberal model. In its wake the power of emerging nations has grown. The G8 lost prestige to the G20. Before the crisis, the strong global economic growth, under the Chinese leadership, led to the rise in commodity prices, favoring the emergence of a growth cycle combined with a better internal and external financial situation of most South American economies. If after the debt crisis in the 1980s instability and cyclical divergence marked the interaction between the South American countries, the first decade of the 21st century witnessed a convergence more virtuous. In this context, new initiatives of monetary and financial cooperation are gaining strength, especially the proposal of the Bank of the South, the creation of the Structural Convergence Fund for Mercosur and the Local Currency Payment System, among other initiatives. Therefore, it seems to be surging a space for innovation in the midst of an international scenario marked by the "rise of the rest" and the relative decline of the United States. Considering the case of South America, from the Brazilian perspective, this research aims to study the possibility, costs and benefits of further monetary and financial cooperation at the regional level. Assuming that short-term substantial reforms are not expected for the international monetary system (UNCTAD, 2007; OCAMPO, 2006) and observing a trend of emergence of a multimonetary system (EICHENGREEN, 2011), the main goal is to answer the following questions: (i) would be viable the emergence of a South American monetary subsystem focused on the Brazilian economy? (ii) given the regional differences, how integration can progress without compromising national development? and (iii) the mechanisms of monetary and financial cooperation that exist today can ensure progress in regional integration?
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Carvalho, Alexsandro Marian. "Dinâmica de doenças infecciosas em redes complexas". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/70414.
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Fenômenos como a rápida propagação de epiderriias em escala mundial têm chamado a atenção 'para a importância da estrutura da rede de contatos, através da qual os membros de uma comunidade interagem entre. si. O efeito da topologia das redes de contatos sociais na dinâmica de epidemias tem sido .estudado recentemente de maneira geral em redes paradigmáticas (inundo pequeno, livre de escala, etc), mostrando efeitos que dão outra dimensão aos resultadps típicos de campo médio, ou seja, ausência de limiar de epidemia e limiar de epidemia dependente da topologia. Motivados por estes resultados, analisamos e implementamos: modelos teóricos 'e computacionais de propagação de epidemias. Em termos de contribuição,' primeiramente, apresentamos uma solução algébrica para o modelo SIR. na aproximação de campo médio. Em seguida; desenvolvemos um modelo de rede de interação. dinâmica a qual se desenvolve uma epidemia. *Entre os resultados, achamós que o tempo característico de formação da rede frente ao ternpo da doença influencia na dinâmica da epi demia. Por fim, utilizando dá dinâmica da doença, comparamos uma rede real de, contatos amorosos com as redes paradigmáticas. Concluímos, que estrutura estática real comporta-se como uma rede aleatória e que a inserçãO da formação dinâmica das interações atenua os efeitos da epidemia.Phenomena such as the rapid spread of epidermes on a global scale have drawn attention to the importante of the structure of the network, through which members of a cornmunity interact. The effect of 'the network topology of social contacts the dyriamics of ,epidemics has been studied recently in general network models (small world, scale free, etc), showing effects that give another dimension to the results of typical mean field, or absence of epidemic threshold and epidemic threshold depends on the topology. Motivated by these results; we analyze and implement theoretical and computational fflodels for the sprea,d of epidermes. In terms of contribution, first, we present an algebraic solution for the SIR model in the mean field approximátion. Further, we develop a network model for the dynarnic interaction between individuais in which develops an epidemic. Among the results, we found that the characteristic time of formation of the network against the time of disease infiuences the dynamics of the epidemic. Finally, using the dynamics of the disease, we cornpáred a real network of loving contacts with the network model. We conclude that real static structure behaves like a random network and that the insertion of the formation dynamies of interactions attenuates the effects of the epidernic..
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Gomes, Martina Pereira. "Um estado da arte do trabalho infanto-juvenil nas universidades do estado do Rio Grande do Sul". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/70614.
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A partir da Revolução Industrial, a exploração do trabalho infanto-juvenil se configura como um elemento mutilador da vida (Fonseca, 2008) de crianças e adolescentes, perpetuando-se até hoje. No Brasil atualmente, cerca de 2,97 milhões de pessoas entre 5 e 17 anos exercem algum tipo de trabalho (PNAD,2011). A materialidade da exploração da força de trabalho de crianças e adolescentes é um fenômeno social que tem seus atravessamentos no processo educacional. Nesta faixa-etária, estes sujeitos devem encontrar-se em processo de formação na educação básica, lócus de nossa profissão. Este trabalho de mestrado configura-se enquanto uma sequência de uma pesquisa de Iniciação cientifica BIC/UFRGS relacionada ao grupo de Pesquisa NIEPE/FACED/UFRGS. O estado da arte é uma metodologia utilizada com objetivo principal de organização teórica de um campo e/ou temática específica; que comporta também a utilização de metodologia revisão bibliográfica, revisão teórica e análise de conteúdo. O objetivo foi apontar mediações possíveis para apreender o fenômeno trabalho infanto-juvenil , a partir da análise da produção acadêmica entre 1990 (promulgação do ECA) e 2011 (ano em que se inicia este trabalho) de nível de pós-graduação nas Universidades do Estado do Rio Grande do Sul sobre o tema trabalho infanto-juvenil. Como eixos temáticos que fazem parte da construção do trabalho infanto-juvenil nas produções discentes analisadas temos questões como: programas sociais, sentidos e representações, escola, brinquedo, trabalho educativo, saúde e velhice.Ao final buscamos apontar emergências que surgem da estruturação do campo de pesquisa, a partir de vinte e um anos analisados de produções sobre o tema em nosso Estado.After the Revolution, the exploitation of the child labor is considered to mutilate the lives of children and adolescents, a practice still perpetrated nowadays. In Brazil currently, an estimate of 2.97 milion people aging from 5 to 17 are employed in some kind of labor (PNAD,2011). The materiality of the exploration of the labour-power of children and adolescents is a social phenomenon that has its crossings in the educational process. In this age range, these subjects are usually students at basic education schools, locus of our research. This dissertation set up as a result of a scientific research Initiation BIC/UFRGS related to the Research Group NIEPE/FACED/UFRGS. The state of the art is a methodology used with the main objective of organizing the theory, a field and/or specific thematic; which involves usage of the methodology review of the bibliography, review of the theory and content analysis. The goal was to point to possible mediation to apprehend the phenomenon of child labor, from the analysis of research conducted from 1990 (promulgation of the ECA) to 2011(year that this work begun) on graduate level at the Universities of the State of the Rio Grande do Sul on the topic child labor. As themes that are part of the construction of the child labor in the analyzed students productions we posed questions regarding: social programs, directions and representations, school, toys, educational work, health and old age. At the end we seek to point out emergencies that arise from the structuring of the research field, from twenty-one years of the productions on the topic analyzed in our State.
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Tekiela, Daniel. "Toward a More Integrative Approach to Quantifying the Ecological Impacts of Invasive Plants". Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/70914.
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Invasive species are reported as one of the top current and future concerns for the health and functioning of native ecosystems. In response, identification of invasive plant impacts are one of the top most studied aspects of plant invasions. Yet we still know very little about invasive plant impacts, and many land managers remove invasive plants not because of known negative impacts, but because of the general negative connotation associated with invasions. Here, I develop and utilize integrative methods to more holistically measure the ecological impacts of invasive plants. I develop a meta-analysis of current invasive plant impact literature, I integrate independent ecosystem metrics into holistic measures of total ecological impact, I examine the potential for legacy and temporal effects in newly established and recently managed invasions, and I measure ecological impact of co-invaded ecosystems. Through these studies, I find that magnitude, and not direction, of impact better represents actual ecosystem changes when evaluating invasions holistically. I also find invasive plant management may not only fail to remove long term legacy effects, but may in some cases further negatively impact the plant community. Finally, I find that co-invaded systems are not intrinsically worse off than single invaded systems. Collectively, these studies help to better our understanding of the impacts of invasive plants and their implications for management, and show that simple attempts at eradication may not always be desirable.Ph. D.
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Shimul, Md Anwar Sadat. "Conceptualising Luxury Brand Attachment". Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/70514.
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This research conceptualises luxury brand attachment and develops a measurement scale for the construct. Underpinned with self-expansion and social identity theory, a research model is proposed with a set of hypotheses to investigate the inter-construct relationships. The self-congruity aspect within the luxury brand attachment construct is postulated to be moderated by the influence of consumers’ public self-consciousness and the product’s private/public status. The findings of this research will provide meaningful insights for academics and practitioners.
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Esparza, Lorente Amable Vicente. "Análisis del potencial riesgo de ocurrencia de mareas negras procedentes del mar abierto, por el tráfico de hidrocarburos, en el litoral mediterráneo español". Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/7014.
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El objetivo fundamental de este artículo es el de analizar, identificar y posteriormente cuantificar, las áreas de la costa Española Mediterránea, con mayor riesgo de sufrir un derrame de hidrocarburos procedente del tráfico marítimo de hidrocarburos. En el estudio que fundamenta este artículo, se han tomado en consideración una serie de variables, de entre las que destacamos, las peculiaridades geográficas, climáticas o la densidad de tráfico, que alimenten una función aleatoria. Esta función objetiva ponderará los diferentes puntos de la costa e identificando los que tengan una mayor probabilidad de riesgo.En la investigación aquí presentada, se pretende evidenciar dónde pueden ubicarse las áreas del Mediterráneo Occidental español donde puede haber mayor riesgo de derrame potencialmente.
EL ESCENARIO GEOGRÁFICO
El Mar Mediterráneo se extiende sobre unos 3.800 Km. de Este a Oeste y unos 800 Km. de Norte a Sur, cubriendo una superficie aproximada de 2,5 millones de Km2, lo cual representa unas cinco veces la de España. Su cuenca alberga un volumen de 3,7 millones de Km3 con una profundidad media de unos 1.500 metros, la cual es claramente inferior a la media oceánica. Morfológicamente, el Mar Mediterráneo aparece separado del Océano Atlántico por el Estrecho de Gibraltar, de unos 14 Km. de anchura y 300 metros de profundidad. Otras comunicaciones, aunque menos importantes desde el punto de vista hidrológico, conectan el mar Mediterráneo con el Mar Negro y con el Océano Índico a través del Mar Rojo. Se trata, respectivamente de los estrechos del Bósforo y de los Dardanelos, entre los que queda delimitado el pequeño Mar de Mármara y el Canal de Suez, éste último de carácter artificial y de relativamente reciente apertura (1867). A grandes rasgos, podemos afirmar que el Mediterráneo está compuesto de dos grandes cuencas, separadas entre sí por el Canal de Sicilia y denominadas Cuenca Oriental y Cuenca Occidental.
La cuenca Mediterránea se caracteriza por los limitados recursos agrícolas, forestales, ganaderos e incluso pesqueros. Por otro lado, también son limitados los recursos energéticos en la margen septentrional, aunque, por el contrario, hay una importante cantidad de gas natural e hidrocarburos en la margen meridional. Ante el mencionado panorama de recursos, nos encontramos con una importante población, la cual se prevé que rondará los 500 millones de habitantes y cerca de 300 millones de turistas anuales, a mediados de la próxima década.
En la cuenca meridional se encuentran los principales puertos exportadores de hidrocarburos, destacando Libia como país mediterráneo con mayores reservas. En la margen europea, destaca el puerto de Marsella, con unas importaciones de crudo del orden de 65 millones de toneladas anuales, además de Italia, donde se localizan tres de los principales puertos en este tipo de tráficos, los cuales suman unas 90 millones de toneladas de crudo anuales.
Pollution risks coming from the shipping traffic is one of the real risks that Spanish coast can face. It is much closed the remember of the Fedra bulk carrier in the strait of Gibraltar, the Prestige tanker in Finisterre or the Castor near accident off the Almeria coast. The main objective of this paper is to analyse, identify and further to quantify, the areas in the Mediterranean Spanish coast, with biggest risk of suffering a hydrocarbons spill coming from the tankers maritime traffic. The study, in which this paper is based, has been considered a set of variables among which we can remark the geographic particularities, the climatic issues, the ships' age or the traffic density; that are going to feed an algorithm. This objective function will weight those different parameters in the entire coast and will identify the ones with the biggest risk probability. The results are going to put in evidence where are the most critical areas in the Spanish coast, when talking about its risk of spill.
THE GEOGRAPHICAL SCENARIO
The Mediterranean Sea extends approximately on 3,800 km from East to West and 800 km from North to South, covering a surface of 2.5 millions of km2 which represents 5 times the surface of Spain. Its basin keeps a volume of 3.7 million of km3 with an average depth of 1,500 km which is clearly lower than the ocean average. The Mediterranean Sea is linked to the Atlantic Ocean through the Gibraltar Strait that is about 14 km wide and 300 metres deep. Other secondary passes from the hydrological point of view, is the connection with the Black Sea and the Indic Ocean through the Red Sea. From a general point of view we can identify two clear basins in the Mediterranean, limited by the Sicily canal and called Eastern and Western Mediterranean...
The Mediterranean basin, is identified by the limited agricultural, forest, cattle and even fishing, resources, including the energetic ones at least in the Northern coast, but with large reserves of natural gas and hydrocarbons in the Southern coast. In a parallel sense we find a population of 500 millions of persons and around 300 millions of tourists per year that are expected in this decade. Also in this coast there are the main hydrocarbons export ports, most of all in Libya, the Mediterranean country with the biggest reserves. In the European coast we must remark the port of Marseilles, as the biggest import port in terms of volume, with 65 millions of metric tonnes per year or Italy where there are placed the three main ports of such kind of traffic, with an added volume of 90 millions of metric tonnes.
The Mediterranean hydrocarbon traffic routes, from a internal point of view, are the ones from North to South and East to West, but we should add the crude oil traffic in transit that in the year 2006 sum up to 421 millions of metric tonnes only of crude oil, from which 72 millions where among non intra Mediterranean ports [1].
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Lopes, Orlando. "O Plano de actividades como instrumento de gestão: aplicação a uma U/E/O do Exército". Master's thesis, Academia Militar. Direção de Ensino, 2011. http://hdl.handle.net/10400.26/7014.
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O Sector Público tem vindo, nos últimos anos, a caminhar para uma aproximação da sua gestão com o Sector Privado. É verdade que se torna difícil medir a actividade e os resultados alcançados por alguns organismos públicos. Contudo, a sociedade espera cada vez mais uma maior transparência das informações financeiras e prestação de responsabilidades (Accountability) por parte dos organismos públicos. Aliás, é esta ideologia que caracteriza o que hoje se designa por Nova Gestão Pública (New Public Management). É certo que esta nova gestão, implica novos procedimentos e sistemas de informação que possibilitem uma melhor afectação dos recursos escassos postos à disposição dos organismos públicos. Mas, também se espera que estes procedimentos e sistemas de informação, possam contribuir para o apoio à tomada de decisão dos órgãos decisores. Este trabalho visa analisar o planeamento no Exército Português, consubstanciado pelo Plano de Actividades inserido no SIG, determinando o seu contributo como instrumento de gestão no apoio à tomada de decisão.
O presente trabalho de investigação divide-se em duas partes. Na primeira parte efectuou-se um enquadramento teórico, abordando o Sector Público, a gestão financeira pública e o Planeamento de Actividades. A segunda parte, o trabalho de campo, diz respeito à apresentação e análise dos resultados obtidos e às conclusões e recomendações.
Para a recolha de dados, procedeu-se à realização de um inquérito por questionário, um estudo de caso e um inquérito por entrevistas. Como resultado desta investigação, poderemos referir que o Plano de Actividades tem as condições necessárias para se constituir como instrumento de gestão. Contudo, existem ainda algumas dificuldades que terão de ser ultrapassadas, nomeadamente, no que diz respeito à avaliação do plano e ao seu controlo.Abstract The Public Sector has, in recent years, moving towards an approach of its management with the Private Sector. It’s true that is difficult to measure the activity and results achieved by some public organisms. However, the society increasingly expects a greater transparency of information and provision of financial responsibility (Accountability) by the public organisms. Indeed, is this ideology that characterizes what is today known as the New Public Management. It’s true that this new management requires new procedures and information systems that could allow a better allocation of scarce resources, made available to the public organisms. But it is also expected that these procedures and information systems can help support the decisions of the decisions organisms. The current work aims to analyze the planning work in the Portuguese Army, embodied by the Activities Plan inserted into the Integrated Management System, determining its contribution as a management tool to support decision making. This research work is divided in two parts. In the first part was carried out a theoretical framework, addressing the Public Sector, Public Financial Management and Planning Activities. The second part, which consists, in field work research methods, concerns the presentation and analysis of results, conclusions and recommendations. For data collection, was made a survey, a case study and survey interviews. As a result of this investigation, we noted that the Activities Plan has the necessary conditions to be qualified as a management tool. However, there still are some problems to be overcome, particularly regarding the evaluation of the plan and its control.
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Brogdon, Brian N. "Effects of ethanol media on chlorine dioxide and extraction stages for kraft pulp bleaching". Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/7014.
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Stephens, Sonia H. "Effects of light and nutrients on the community composition of Benthic Algae in a Hawaiian stream". Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/7014.
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Dedge, Parks Dana M. "Defining Data Science and Data Scientist". Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/7014.
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The world’s data sets are growing exponentially every day due to the large number of devices generating data residue across the multitude of global data centers. What to do with the massive data stores, how to manage them and defining who are performing these tasks has not been adequately defined and agreed upon by academics and practitioners. Data science is a cross disciplinary, amalgam of skills, techniques and tools which allow business organizations to identify trends and build assumptions which lead to key decisions. It is in an evolutionary state as new technologies with capabilities are still being developed and deployed. The data science tasks and the data scientist skills needed in order to be successful with the analytics across the data stores are defined in this document. The research conducted across twenty-two academic articles, one book, eleven interviews and seventy-eight surveys are combined to articulate the convergence on the terms data science. In addition, the research identified that there are five key skill categories (themes) which have fifty-five competencies that are used globally by data scientists to successfully perform the art and science activities of data science.
Unspecified portions of statistics, technology programming, development of models and calculations are combined to determine outcomes which lead global organizations to make strategic decisions every day.
This research is intended to provide a constructive summary about the topics data science and data scientist in order to spark the dialogue for us to formally finalize the definitions and ultimately change the world by establishing set guidelines on how data science is performed and measured.
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White, Carmen Irene. "A self-study examining the effectiveness of creative dramatics with Urban youth". College Park, Md. : University of Maryland, 2007. http://hdl.handle.net/1903/7014.
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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.Thesis research directed by: Curriculum and Instruction. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Nicholson, Diana Jayne. "Knowing "knowledge": explorations with youth and other thinking friends". Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/7014.
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This thesis sketches my foray into an inquiry with youth; an inquiry which aimed to inquire into beliefs about “knowledge” while simultaneously inquiring into how I enacted knowledge in my research practices. Inquiry into beliefs about knowledge – what knowledge means, where knowledge comes from, who knows (and who doesn’t) – was undertaken to gain insight into how knowledge is known and the effects of conceptions of knowledge on daily living. Beginning with the assumption that beliefs about abstract concepts, such as knowledge, tend to be held implicitly and therefore elude critique and revision, I created an experimental inquiry process to explore the possibility of surfacing beliefs about knowledge with youth through the use of interactive activities. The interactive activities were designed to reduce the abstraction of “knowledge” and facilitate thinking about knowledge as situated concretely in day-to-day life. Feminist pragmatism supported the impetus for the inquiry and the interactive imperative for the inquiry explorations, and also informed the interpretation of texts generated in the inquiry. Through bringing together the voices of youth with the voices of other thinking friends, the relevance and significance of youth’s insights into how knowledge is known is made apparent, and is also foregrounded in proposed considerations for teaching-learning encounters. The inquiry also served to transform how I think about and respond to the enduring challenges associated with the knowledge work of my research practice.
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Nosho, Yosuke, Yutaka Ohno, Shigeru Kishimoto y Takashi Mizutani. "n-type carbon nanotube field-effect transistors fabricated by using Ca contact electrodes". American Institute of Physics, 2005. http://hdl.handle.net/2237/7014.
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Walls, Frances Grace. "Dual-response approach to work stress: An investigation of organisational stressors, individual moderators and wellbeing outcomes". Thesis, University of Canterbury. Psychology, 2012. http://hdl.handle.net/10092/7014.
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This study demonstrates the complex place stress has in the workplace by investigating both positive (eustress) and negative (distress) stress responses. An international sample of 140 individuals was recruited from various industries and organisational levels and these individuals participated in a confidential online survey. A moderated mediation model was proposed in which organisational stressors (person-job fit and role overload) influenced employee affective wellbeing directly and indirectly through stress responses, moderated by individual factors (work-family conflict and self-efficacy). Person-job fit influenced eustress which had positive effects on employee affective wellbeing. Role overload influenced distress which negatively impacted affective wellbeing. Self-efficacy moderated these relationships, with high levels increasing stress responses both negative and positive. Work-family conflict moderated relationships by reducing the positive effect of eustress and increasing the negative effect of distress. The findings not only advance current knowledge but have implications for organisational stress management practices.
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Tang, Tang. "Towards sustainable use : design behaviour intervention to reduce household environment impact". Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/7014.
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The use of electrical products has a significant environmental impact, mainly determined by user behaviour, which has overridden the energy efficiency gains in the household from technological and educational solutions. Designers are identifiably in a position to plan and shape the way in which consumption occurs and to fill the gap between values and everyday user actions. Despite this, the literature demonstrates that the use phase of the product life cycle is often neglected in sustainable design. Few attempts have been made to change user behaviour through design-led interventions to limit its environmental burdens. In addition, there is a lack of understanding of users perceptions of environmental issues with reference to the specific context: actual use, habits and fundamental needs of the product as well as the behaviour changing products. This makes creating sustainable use of the household appliance lessen the significance of its original purpose. The aim of this research is to seek the role that design could play in influencing more sustainable actions to reduce environmental household impacts. Based on a comprehensive literature review in diverse disciplinary fields of enquiry, a Design Behaviour Intervention Model has been established to bridge the social-psychological theories of behaviour and the behaviour intervention approaches. To inform this enquiry, a single product type (household cold appliance) was chosen as a case study to explore the capacity of a qualitative behaviour study to identify unsustainable aspects of product use. Two design activities were carried out: one examining the designer s ability to respond to the design brief and the other applying the findings that emerged from the in-depth behaviour analysis and the model into the design process. The selected outcomes from the design study are evaluated by a focus group to uncover the users acceptance level of these concepts and the behaviour intervention approaches applied. The collective findings are discussed along with the usefulness and effectiveness of the Design Behaviour Intervention Model in Design for Sustainable Behaviour. This research highlights that a detailed user study is not only the first step for improving energy efficiency in product use but also the origin of innovative design concepts to tap the market by providing better and greener use experiences. Useful insights on primary findings have emerged: the effectiveness of applying the social-psychological theory in the Sustainable Design domain; principles of improving effectiveness and acceptability of the behaviour interventions; and a guide for Design for Sustainable Behaviour.
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Solomon, Clell J. Jr. "Discrete-ordinates cost optimization of weight-dependent variance reduction techniques for Monte Carlo neutral particle transport". Diss., Kansas State University, 2010. http://hdl.handle.net/2097/7014.
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Doctor of PhilosophyDepartment of Mechanical and Nuclear Engineering
J. Kenneth Shultis
A method for deterministically calculating the population variances of Monte Carlo particle transport calculations involving weight-dependent variance reduction has been developed. This method solves a set of equations developed by Booth and Cashwell [1979], but extends them to consider the weight-window variance reduction technique. Furthermore, equations that calculate the duration of a single history in an MCNP5 (RSICC version 1.51) calculation have been developed as well. The calculation cost, defined as the inverse figure of merit, of a Monte Carlo calculation can be deterministically minimized from calculations of the expected variance and expected calculation time per history.The method has been applied to one- and two-dimensional multi-group and mixed material problems for optimization of weight-window lower bounds. With the adjoint (importance) function as a basis for optimization, an optimization mesh is superimposed on the geometry. Regions of weight-window lower bounds contained within the same optimization mesh element are optimized together with a scaling parameter. Using this additional optimization mesh restricts the size of the optimization problem, thereby eliminating the need to optimize each individual weight-window lower bound. Application of the optimization method to a one-dimensional problem, designed to replicate the variance reduction iron-window effect, obtains a gain in efficiency by a factor of 2 over standard deterministically generated weight windows. The gain in two dimensional problems varies. For a 2-D block problem and a 2-D two-legged duct problem, the efficiency gain is a factor of about 1.2. The top-hat problem sees an efficiency gain of 1.3, while a 2-D 3-legged duct problem sees an efficiency gain of only 1.05. This work represents the first attempt at deterministic optimization of Monte Carlo calculations with weight-dependent variance reduction. However, the current work is limited in the size of problems that can be run by the amount of computer memory available in computational systems. This limitation results primarily from the added discretization of the Monte Carlo particle weight required to perform the weight-dependent analyses. Alternate discretization methods for the Monte Carlo weight should be a topic of future investigation. Furthermore, the accuracy with which the MCNP5 calculation times can be calculated deterministically merits further study.
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Melo, Joanna Maria. "Relatório de prática de ensino supervisionado". Master's thesis, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa, 2011. http://hdl.handle.net/10362/7014.
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Relatório de Estágio apresentado para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Ensino de Filosofia no Ensino SecundárioA primeira parte do seguinte documento concerne um relatório da nossa experiência prática supervisionada de aprendizagem do ensino de Filosofia no Ensino Secundário. Apresentamos uma auto-avaliação: das nossas planificações de aulas e unidades temáticas, dos nossos planos de actividades de Núcleo de Estágio, da nossa aprendizagem de métodos avaliativos, da caracterização da escola e de uma turma de 10º ano e uma turma de 11º ano. A segunda parte consagra-se a uma didáctica a partir d’O Banquete de Platão.
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Garcia, Elga. "Comparação da eficiência reprodutiva da inseminação artificial cervical e da inseminação artificial pós-cervical em suínos". Master's thesis, Instituto Politécnico de Bragança, Escola Superior Agrária, 2009. http://hdl.handle.net/10198/7014.
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O presente trabalho tem como objectivo comparar os resultados reprodutivos de
uma nova técnica de inseminação artificial (IA), inseminação arlificial pós cervical
(IPC) com a técnica de inseminação artificial cervical (IC), e verificar a viabilidade
técnica e económica da introdução desta nova téc1úca numa exploração de suínos.
Para a realização do trabalho, utilizaram-se 100 porcas resultantes de
cruzamentos com as seguintes raças: Landrace, Large White e Chinois e 2 varrascos
resultantes do cruzm11ento de Pietrain e Dmoc. Todas as porcas eram multíparas, sendo
distribuídas de fonna aleatória pelas duas téc1úcas. Foram utilizadas doses de sémen do
mesmo varrasco e do mesmo lote de recolha, nas duas técnicas, contendo um número de
espem1atozóides (SPZ) por dose de 4 * 1 09 (I C) e 2 * 1 09 (IPC).
Não foram observadas diferenças significativas entre tratamento.s para os
principais parâmetros reprodutivos estudados entre as duas técnicas, sendo: a taxa de
fertilidade de 82% para (IC) e 88% para (IPC); a média de leitões nascidos vivos foi
10,9 para (I C) e 1 I ,3 para (IPC), a média de leitões nascidos mortos foi 1,2 para (TC) e
1,0 para (IPC) e a média de leitões mumificados foi 0,4 para (IC) e 0,7 para (IPC).
Em termos económicos a inseminação artificial pós cervical pode permitir obter
uma receita líquida superior quando comparada com a inseminação artificial cervical ..
Estas receitas superiores devem-se à necessidade de um número inferior de
espermatozóides por dose, sendo necessário um menor número de varrascos, permitindo
trabalhar apenas com reprodutores de maior potencial genético. The aim of the present study is the comparison of reproductive results with the
use of one new technique of artificial insemination (AI); post cervical insemination
(IPC) with the technique of cervical insemination (IC). and check technical anel
economical viability of introducing this new teclmique in a swine fam1.
For the accomplislm1ent of this work we have used 100 sows resul1ing from the
cross of Landrace, Large White and Chinois races and two boaTs resulting from the
cross of Pietrain and Duroc. All the sows had one or more farrows, they've been
distri buted randomly by the two lA techniques. We have used sperm doses from the
same boar and the same lote in the two teclmiques, containing the same mm1ber of
spermatozoa per dose of 4*1 09(IC) and 2* 1 09(IPC).
No significant differences were noticed between the treatments for the main
reproductive parameters studied, being: the fanowing rate of 82% (IC) and 88% (IPC),
the litter size of 10,9 (IC) and 11,3 (IPC) piglets bom per inseminated sow, 1,2 (IC) and
1 ,O (IPC) born dead piglets and 0,4 (I C) and 0,7 (IPC).
In economical terms the IPC teclmique, may reach a lúgher profits compared
with the IC teclmique. These higher profits are dueto the need of a smaller number of
spermatozoa per dose, being needed a smaller number of boars, what allows us to work
only with boars of higher genetic potential.
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Pacheco, Neyra Gianella Gabriela. "Identidad cultural y cambios: La producción de chicha de año en el distrito de Magdalena de Cao". Master's thesis, Universidad Nacional Mayor de San Marcos, 2017. https://hdl.handle.net/20.500.12672/7014.
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Expone los resultados de la investigación etnográfica realizada en el distrito de Magdalena de Cao, ubicado en el departamento de la Libertad. La investigación pretende aportar a la comprensión de los cambios que se han generado en la producción, tradición, e identidad de los productores de chicha de año. Esta es una bebida alcohólica tradicional que junto al descubrimiento arqueológico de la “Señora de Cao”, constituye uno de los elementos emblemáticos del distrito. A partir de la llegada de instituciones vinculadas a proyectos de desarrollo y puesta en valor, los cambios en la tradicional producción de chicha de año se han vuelto más dinámicos. En este proceso se han identificado un grupo de chicheros con disposición a los cambios en el discurso y en las técnicas de producción, y un grupo de chicheros renuentes. Se analizaran los factores sociales y económicos que influyen en este proceso.Tesis
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Stenzel, Gabriela Quadros de Lima. "História de vida e características de personalidade de agressores conjugais: um olhar psicanalítico". Pontifícia Universidade Católica do Rio Grande do Sul, 2014. http://hdl.handle.net/10923/7014.
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Previous issue date: 2014Domestic violence against women is considered a serious public health problem in Brazil and worldwide. Studies with marital aggressors seem to be fundamental to the understanding of such violence so common nowadays. The main goal of this thesis was to investigate life history and personality characteristics of men who perpetrated violence against women, held in the Central Prison of Porto Alegre. It consists of three sections: one theoretical and two empirical. The first section is theoretical, and aimed to search subsidies to understand how traumatic events in this men childhood may influence on the relations they will establish with others and their capacity to control the free expression of aggressiveness (death drive) in adult’s romantic relationships. The concept of narcissism, as an organizer or deconstructive process of the psyche, was used to understand the psychological functioning of the marital aggressor. The second section, empirical (developed from qualitative methodological assumptions), introduced the study that aimed to cover the research project main objective, which was conducted with the participation of three men (marital aggressors). All men answered to a Personal and Socio-Demographic Data Sheet, MINI Interview, the Rorschach Method and a series of three semi-structured interviews guided by three main topics, respectively:a) the participant's life story; b) marital choices and the presence of violence in romantic relationships and c) the current situation in prison as a result of violence committed. The results were examined through Interpretative Analysis and grounded on assumptions of psychoanalytic theory. Three assertions have been identified: a) helplessness and violence as marks in the life history and psychic constitution of marital aggressors; b) marital choice and the perpetuation of violence as manifestations of narcissistic failure and c) Maria da Penha Law and the recover experience of the feeling of abandonment. It was possible to understand the violence committed as a result of a life story marked by traumatic experiences that produced narcissistic failure and the free expression of aggressiveness (death drive). The third and final section, also of empirical nature, explored the interconnections between trauma, narcissism and death drive through a clinical case analysis of one of the research participants. The influence of life history in the marital relationship and in the violent act committed by this man was explored, as well as his personality characteristics. The presence of helplessness and violence in his life story were identified, producing marks on his psychic constitution that influenced in his romantic relationship. It is proposed the term psychic imprisonment as a means of understanding the violence perpetrated.
A violência doméstica contra a mulher é considerada um sério problema de saúde pública no Brasil e no mundo. Estudos realizados com agressores conjugais parecem ser fundamentais para a compreensão desse tipo de violência tão frequente nos dias de hoje. Esta Tese tem como objetivo principal investigar características da história de vida e de personalidade de homens que perpetraram violência contra a mulher, detidos no Presídio Central de Porto Alegre. É composta por três seções: uma teórica e duas empíricas. A primeira seção é de cunho teórico e teve o objetivo de buscar subsídios para auxiliar na compreensão da influência de acontecimentos traumáticos durante a infância na forma de se relacionar e de controlar (ou não) a livre expressão da agressividade (pulsão de morte) na vida amorosa adulta. O conceito de narcisismo, como processo organizador ou desestruturante do psiquismo, foi utilizado para auxiliar na compreensão do funcionamento psicológico do agressor conjugal. A segunda seção, empírica (desenvolvida a partir de pressupostos metodológicos qualitativos), apresenta o estudo que responde ao projeto de pesquisa e que foi realizado com a participação de três homens (agressores conjugais). Todos os homens responderam a uma Ficha de Dados Pessoais e Sociodemográficos, a Entrevista MINI, ao Método de Rorschach e a uma série de três entrevistas semiestruturadas norteadas por três grandes eixos, respectivamente: a) a história de vida do participante; b) as escolhas conjugais e a presença da violência nos relacionamentos amorosos e c) a situação atual de cárcere como consequência da violência cometida. Os achados foram examinados pelo método da Análise Interpretativa e embasados nos pressupostos da teoria psicanalítica. Foram identificadas três asserções: a) o desamparo e a violência como marcas na história de vida e na constituição psíquica de agressores conjugais; b) a escolha conjugal e o exercício da violência como manifestações da falha narcísica e c) a Lei Maria da Penha e a reedição do sentimento de abandono. Os resultados encontrados permitiram compreender a violência cometida como decorrente de uma história de vida marcada por vivências traumáticas que produziram falhas narcísicas e a livre expressão da agressividade (pulsão de morte). A terceira e última seção, também de cunho empírico, explorou as interligações existentes entre trauma, narcisismo e pulsão de morte por meio da análise do caso clínico de um dos participantes da pesquisa. Explorou-se a influência da história de vida na escolha e relacionamento conjugal e no ato violento cometido por este homem contra sua companheira, assim como características de personalidade do mesmo. Identificou-se a presença do desamparo e da violência em sua história de vida, produzindo marcas em sua constituição psíquica que influenciaram em seu relacionamento amoroso. Propõe-se a expressão aprisionamento psíquico como forma de compreensão da violência perpetrada.
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Giacomoni, Márcio Hofheinz. "Estimativa da evapotranspiração regional por meio de técnicas de sensoriamento remoto integradas a modelos de balanço de energia : aplicação no estado do Rio Grande do Sul". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2005. http://hdl.handle.net/10183/7014.
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A evapotranspiração (ET) abrange todos os processos que envolvem a mudança de fase líquida ou sólida para vapor de água. Globalmente, suas principais componentes são a evaporação nos oceanos, corpos d’água e solo e a transpiração pela cobertura vegetal. O conhecimento da ET da superfície terrestre para a atmosfera é muito importante para a resolução de inúmeras questões relacionadas aos recursos hídricos. Dentre essas questões, destacam-se planejamento de bacias hidrográficas e, em especial, o manejo da irrigação. Esse tipo de informação é igualmente relevante para estudos climáticos uma vez que, por meio da ET, ocorre redistribuição de umidade e calor da superfície para a atmosfera.As metodologias convencionais de estimativa da ET, em geral, apresentam muitas incertezas. Essas incertezas aumentam muito quando o interesse é o comportamento espacial da mesma. A única tecnologia que permite acessar esse tipo de informação, de forma eficiente e econômica, é o sensoriamento remoto. Por meio de dados derivados de imagens de satélite é possível calcular o balanço de energia de uma região e acessar as reais taxas de ET. A literatura internacional apresenta alguns modelos para estimar a ET por meio de sensoriamento remoto. A verificação dessas estimativas é feita por medidas dos termos do balanço de energia realizadas por sensores colocados em torres meteorológicas. Esse tipo de informação, no entanto, é de alto custo e de difícil aquisição. Após revisão de literatura, foram escolhidos os algoritmos SEBAL (Surface Energy Balance Algorithm for Land) e SSEBI (Simplified Surface Energy Balance Index). O primeiro foi adotado por ser um dos mais utilizados e o segundo pela sua simplicidade.Dessa maneira, a partir de 44 imagens de satélite, praticamente livres de cobertura de nuvens, do sensor AVHRR (Advanced Very High Resolution Radiometer), a bordo do satélite NOAA-14, e dados climatológicos de algumas estações, foram geradas séries de coberturas de ET real para o Estado do Rio Grande do Sul em nível diário, durante o ano de 1998. Para efeito de simplificação, na análise dos resultados foram escolhidas algumas áreas representativas das principais classes de cobertura do Estado: área cultivada, campo, área urbana, banhado, lagoa e floresta. Os resultados demonstraram que, para o SEBAL, asperdas médias anuais (mm ano-1) ocorrem, em ordem decrescente nas classes banhado (827), lagoa (732), floresta (686), área cultivada (458), campo (453) e área urbana (276). Para o S-SEBI, esta ordem é a seguinte: floresta (918), banhado (870), lagoa (669), área cultivada (425), campo (403) e área urbana (363). Ficou evidente que as classes com as menores influências antrópicas apresentaram as maiores taxas de ET. Outra observação feita é que, em média, as estimativas do S-SEBI superestimam a ET em relação ao SEBAL, na porção leste do Estado, e o oposto na porção oeste. Foi verificado, ainda, um eixo de decréscimo da ET na primeira metade do ano da porção noroeste para sudeste, e posterior crescimento na segunda metade do ano, em sentido oposto.As verificações foram feitas de forma indireta por meio de um balanço hídrico anual simplificado em algumas bacias hidrográficas do Estado, por meio de valores de ET real para a cultura do milho em algumas localidades do Estado e medidas de evaporação de tanque do tipo Classe A. Em geral, os resultados foram considerados coerentes, o que confere à metodologia utilizada um grande potencial de uso, uma vez que possibilita acessar a distribuição espacial da ET.
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Mendes, Susana Margarida das Neves. "Cumulus momentum fluxes in cloud-resolving model simulations of toga-coare". Doctoral thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/7014.
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Doutoramento em FísicaO objectivo deste trabalho científico é o estudo do transporte vertical de momento linear horizontal (CMT) realizado por sistemas de nuvens de convecção profunda sobre o oceano tropical. Para realizar este estudo, foram utilizadas simulações tridimensionais produzidas por um modelo explícito de nuvens (CRM) para os quatro meses de duração da campanha observacional TOGA COARE que ocorreu sobre as águas quentes do Pacífico ocidental. O estudo foca essencialmente as características estatísticas e à escala da nuvem do CMT durante um episódio de fortes ventos de oeste e durante um período de tempo maior que incluí este evento de convecção profunda. As distribuições verticais e altitude-temporais de campos atmosféricos relacionados com o CMT são avaliadas relativamente aos campos observacionais disponíveis, mostrando um bom acordo com os resultados de estudos anteriores, confirmando assim a boa qualidade das primeiras e fornecendo a confiança necessária para continuar a investigação. A sensibilidade do CMT em relação do domínio espacial do model é analisada, utilizando dois tipos de simulações tridimensionais produzidas por domínios horizontais de diferente dimensão, sugerindo que o CMT não depende da dimensão do domínio espacial horizontal escolhido para simular esta variável. A capacidade da parameterização do comprimento de mistura simular o CMT é testada, destacando as regiões troposféricas onde os fluxos de momento linear horizontal são no sentido do gradiente ou contra o gradiente. Os fluxos no sentido do gradiente apresentam-se relacionados a uma fraca correlação entre os campos atmosféricos que caracterizam esta parameterização, sugerindo que as formulações dos fluxos de massa dentro da nuvem e o fenómeno de arrastamento do ar para dentro da nuvem devem ser revistos. A importância do ar saturado e não saturado para o CMT é estudada com o objectivo de alcançar um melhor entendimento acerca dos mecanismos físicos responsáveis pelo CMT. O ar não saturado e saturado na forma de correntes descendentes contribuem de forma determinante para o CMT e deverão ser considerados em futuras parameterizações do CMT e da convecção em nuvens cumulus. Métodos de agrupamento foram aplicados às contribuições do ar saturado e não saturado, analisando os campos da força de flutuação e da velocidade vertical da partícula de ar, concluindo-se a presença de ondas gravíticas internas como mecanismo responsável pelo ar não saturado. A força do gradiente de pressão dentro da nuvem é também avaliada, utilizando para este efeito a fórmula teórica proposta por Gregory et al. (1997). Uma boa correlação entre esta força e o produto entre efeito de cisalhamento do vento e a perturbação da velocidade vertical é registada, principalmente para as correntes ascendentes dentro da nuvem durante o episódio de convecção profunda. No entanto, o valor ideal para o coeficiente empírico c*, que caracteriza a influência da força do gradiente de pressão dentro da nuvem sobre a variação vertical da velocidade horizontal dentro da nuvem, não é satisfatoriamente alcançado. Bons resultados são alcançados através do teste feito à aproximação do fluxo de massa proposta por Kershaw e Gregory (1997) para o cálculo do CMT total, revelando mais uma vez a importância do ar não saturado para o CMT.
The aim of the proposed research is the investigation of vertical cumulus momentum transport (CMT) in tropical oceanic deep convective cloud systems. Our approach is to use a unique four month three-dimensional cloud resolving model (CRM) simulations of TOGA COARE - a major field experiment over the warm waters of the west Pacific. Emphasis is given to the study of cumulus-scale characteristics of convective momentum transport during the December westerly wind burst and a longer time interval encompassing this specific deep convective event. The analysis of vertical and time-height distributions are evaluated against observations confirming the good quality and reliability of CRM simulations. Good agreement with previous studies is found. The CMT sensitivity to spatial domain size is analyzed using two data sets produced by different horizontal domain sizes, suggesting a nondependency of this field upon the dimension of model spatial domain. The skill of the downgradient mixing-length parameterization is tested, highlighting the tropospheric regions where the momentum fluxes are downgradient and where they are upgradient. The upgradient transports are linked to an unexpected poor correlation between the fields involved in this parameterization, suggesting that formulations of updraft cloud mass flux and entrainment should be revisited. The role of saturated and unsaturated drafts on CMT is investigated in an attempt to reach a better understanding of their underlying physical mechanisms. The unsaturated air via downdrafts, and the saturated downdrafts have an important contribution to CMT, and they must be considered in future CMT and cumulus convection parameterizations. Binning methods are applied to these saturated and unsaturated contributions, through the analysis of buoyancy force and vertical velocity fields, suggesting the presence of internal gravity waves driving the unsaturated air. The cloud pressure-gradient force is also evaluated using the theoretical formula proposed by Gregory et al. (1997), exhibiting a strong correlation to the product mean vertical shear by vertical velocity perturbation, especially in cumulus updrafts during the strong convective event. However, an optimal value for the empirical coefficient c*, which characterizes the role of the cloud pressure-gradient force on the vertical variation of cloud horizontal velocity, is not satisfactorily achieved. Good results are accomplished by Kershaw and Gregory (1997) proposed mass flux approximation to total CMT, which has a fairly good performance in parameterization the total CMT and in identifying the regions of greater variability. Testing this particular approach revealed once again the important role of unsaturated air to the total CMT, which must be considered in future CMT and deep cumulus convection parameterizations.
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McDowell, Luke K. "Meaning for the masses : theory and applications for Semantic Web and Semantic Email systems /". Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/7014.
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Benner, Kalea Kelly Michael Joseph. "Legalized orphans parental relinquishment to child welfare /". Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/7014.
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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 26, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dissertation advisor: Dr. Michael J. Kelly. Vita. Includes bibliographical references.
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Hamnca, Siyabulela. "Nanostructured polyamic acid electrocatalysts for reliable analytical reporting of sulphonamides as contaminants of emerging concern". University of the Western Cape, 2019. http://hdl.handle.net/11394/7014.
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Philosophiae Doctor - PhDPolyamic acid (PAA) nanostructured materials were successfully produced by electrochemical deposition and electrospinning using polyvinlypyrrolidone (PVP) as supporting polymer. Polyamic acid thin film and nanofibers were deposited directly at the surface of a screen-printed carbon electrode (SPCE) as electro-catalysts for reliable analytical reporting of sulphonamide as contaminants of emerging concern by electrochemical techniques. Fourier transform infrared (FTIR) spectroscopy was used to confirm the structural integrity of the PAA electrospun nanofibers compared to the chemical synthesized PAA. Brunauer-Emmett-Teller (BET) was used to determine the surface area of the nanofibers. The surface morphology and surface thickness of the polyamic acid (PAA) nanofibers on the screen-printed electrodes was studied using scanning electron microscopy (SEM) and atomic force microscopy (AFM). Cyclic voltammetry (CV) was used to study redox behavior of the nanostructured PAA modified screen-printed carbon electrodes. Electrochemical parameters surface concentration, diffusion coefficient, formal potential and peak separation were determined. Three sulphonamides were selected based on the United States of protection agency (US EPA) and World Health Organization (WHO) list of emerging contaminants and detected sulphonamides in environmental waters in South Africa and other African regions. The selected sulfonamides were evaluated at the unmodified and modified screen-printed carbon electrodes. The sulphonamides were evaluated in three different supporting electrolytes at pH < 7 and >7 to enhance electrochemical signal reporting. Sulfadiazine (SDZ), sulfamethoxazole (SMX) and sulfamethazine (SMZ) displayed peaks at 0.80 V vs Ag/AgCl in 0.1 M tris-HCl using square wave voltammetry at the unmodified transducer. At the PAA thin film transducer, SDZ, SMX and SMZ displayed well-defined analytical oxidative peaks at 0.77 V 0.82 V and 0.83 V vs Ag/AgCl respectively. The LOD (n=3) for SDZ was found to be 12.14 ųM with a correlation coefficient of 0.9950. The LOD (n=3) for SMX and SMZ was found to 14.59 ųM (R2 =0.9928) and 10.41 ųM (R2 =0.9963). These sulphonamides were also electro-analytical evaluated at the screen-printed carbon PAA nanofiber modified transducer. SDZ, SMX and SMZ produced well-defined analytical signals at 0.79 V, 0.81 V and 0.78 V vs Ag/AgCl respectively. The determined LOD (n=3) for the individual sulphonamides was 8.26 ųM, 16.59 ųM and 8.81 ųM SDZ, SMX and SMZ respectively. The linearity correlation coefficient (R2) was determined to be 0.9977, 0.9956 and 0.9974 respectively. The efficacy of the proposed nanostructured PAA thin film modified screen-printed carbon sensor was evaluated by performing recovery studies for the selected sulphonamides using square wave voltammetry. Tap water was used to simulate environmental matrix. The recoveries of SDZ with respect to each concentration were 98.84% (RSD 4.98%) to 40.58% (RSD 6.74%). For SMX the recoveries were 154.17% (RSD 11.00%) to 111.03% (RSD 16.80%). The recoveries for SMZ with respect to each concentration were 184% (RSD 8.19%) to 90.26 (RSD 18.26%) indicating the reliability of the analytical results.
2021-09-01
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Renda, C. Renee. "Changing Nonhuman Impulsive Choice". DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7014.
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Preference for smaller-sooner over larger-later rewards characterizes one type of impulsivity—impulsive choice. Impulsive choice is related to a number of maladaptive behaviors including substance abuse, pathological gambling, and poor health behaviors. As such, interventions designed to reduce impulsive choice may have therapeutic benefits. The purpose of this dissertation was to explore two methods to change nonhuman impulsive choice. In doing so, we hope to provide a baseline that future research can use to assess variables that are less amenable to human research (e.g., drug self-administration following reductions in impulsive choice). In Chapter 2, we failed to reduce nonhuman impulsive choice using working-memory training, a finding both inconsistent and consistent with the extant human literature. Chapters 3-5 sought to better understand a training regimen that generates large between-group differences in nonhuman impulsive choice—delay- and immediacy-exposure training. The results from Chapters 3 and 4 suggest that prolonged exposure to delayed food rewards produces large and long-lasting reductions in impulsive choice. Chapter 5 showed that the delay-exposure training effect can be obtained in fewer sessions than has previously been employed. A better understanding of the effects of delay-exposure training on nonhuman impulsive choice may have implications for the design and implementation of a human analog.
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Hurtado, Eduardo. "Job Transitioning Experiences of Blue-Collar Employees After Federal Downsizing". ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7014.
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Downsizing, realignment, and closure of military bases have forced many low-skilled, blue-collar federal employees into involuntary job loss and job transition. The impact of involuntary job loss on blue-collar workers has been linked to stress and other adverse psychological effects. There is gap in the literature regarding the lived experiences of federal blue-collar employees following downsizing of military bases. The purpose of this qualitative, interpretive phenomenological study was to examine lived experiences of job loss and job transition for federal blue-collar employees following downsizing of military bases. Schlossberg's transition theory provided a conceptual framework for the study. Ten ex-federal blue-collar employees were recruited through purposeful sampling and interviewed using a semistructured interview strategy. The modified Moustakas and Stevick-Coliazzi-Keen method of analysis was used to analyze the data and report emergent themes. The following 7 themes emerged from the data: transition was associated with negative feelings, employer was unprepared for transition process, support provided by employer, emotional support from family and significant others, engaged in other activities, accepted the transition process, and drew motivation from family. The findings from this study may contribute to positive social change by providing important information that human resource managers, industrial/organizational psychologists, and government agencies can use to advocate for the need for developing programs that support civilian job transition services to individuals who are affected by federal downsizing.
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Peterson, Katherine Elizabeth. "Topics in supramolecular chemistry: nanococrystals, chiral cocrystals, and acoustic mixing". Diss., University of Iowa, 2019. https://ir.uiowa.edu/etd/7014.
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The synthesis of new molecules is often initiated with the desire to create unique materials that have specific functions and/or properties. The materials are often used in areas such as pharmaceuticals, medical imaging, and energetics. Preparation of these materials utilizes fundamental rules that define how molecules interact with each other in a solid. My research focuses on employing the established concepts to predict how certain molecules interact and assessing the solid form that results (crystal structure) from these interactions.
The solids investigated in my research are composed of two different molecules that can combine in various ways based on complementary interactions. Once the two molecules interact to form a crystal structure, external stimuli, such as heat, can cause the atoms within the crystal to move in specific directions to allow for events such as water loss, or it can initiate atoms to rearrange completely to form a new molecule. My work evaluates how the crystal structure changes when the atoms move and how the interactions between the molecules are impacted. The results of my research indicate the crystal structure can be controlled by aspects such as physical size and the properties of the individual molecules within the crystal.
Additionally, my work involves assessing new ways to synthesize the described molecules by using technology that avoids the use of harmful solvents. My research has demonstrated a new mixing method that can prepare molecules in the lab and production facilities that reduces the amount of solvent needed and improves sustainability through chemistry.
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Hazell, Cassie M. "Is 16 the magic number? : Guided self-help CBT intervention for Voices Evaluated (GiVE)". Thesis, University of Sussex, 2017. http://sro.sussex.ac.uk/id/eprint/70214/.
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Hearing distressing voices (also known as auditory verbal hallucinations) is a common symptom associated with a number of mental health problems. Psychological therapies, specifically cognitive behaviour therapy (CBT) can be an effective intervention for this patient group. The aim of CBT for voices (CBTv) is to reduce the distress associated with the experience, by encouraging the patient to re-evaluate their beliefs about the voice's omnipotence, omniscience, and malevolence. Despite the evidence for CBTv, very few patients are offered this therapy; largely due to a lack of resources. The aim of this thesis was to develop and begin to evaluate a CBT-based intervention for voices that was resource-light; in the hope that it could be more easily be implemented into clinical services, and therefore increase access. This thesis begins with an introduction to the research area, and is followed by a review and evaluation of the methods used in this thesis. Chapter 6 is a systematic review and meta-analysis of the current literature on brief (< 16 NICE recommended sessions) CBT for psychosis (CBTp). Chapters 7 and 8 describe the process of developing a brief CBT intervention for voices, based on the CBT self-help book ‘Overcoming Distressing Voices'. Both people who hear voices, and mental health clinicians were consulted on the intervention concept and design. The outcome of these studies was guided self-help CBTv, and an accompanying therapy workbook to guide the intervention. Chapters 9 and 10 detail the design and findings of a randomised controlled trial of guided self-help CBTv delivered by Clinical Psychologists, versus a wait-list control group. Data was collected at baseline (pre-randomisation) and 12 weeks post-randomisation. The primary outcome was voice-related distress. The findings across all of the studies are then summarised and reflected upon within the Discussion chapter – including consideration of the extent to which the overall aim of this thesis (increasing access) has been achieved.
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Alnomsy, Ayed Khalaf. "Synthesis and properties of pyridine containing drugs and heterocycles". Thesis, University of Sussex, 2017. http://sro.sussex.ac.uk/id/eprint/70414/.
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Chapter 1 provides an overview on the chemistry of pyridines and aminopyridines, their biological activities and their synthesis using Bohlmann-Rahtz, Hantzsch and Chichibabin methodology. It discusses the application of modern alternative reaction platforms, such as microwave-assisted synthesis and flow chemistry, of relevance to the synthesis and reactions of pyridine derivatrives. Chapter 2 discusses Lewis acid catalysis in the Bohlmann-Rahtz pyridine synthesis and describes new one-pot, two- and three-component methodologies that have been developed for the synthesis of natural products containing the pyridine motif. These methods have been compared and contrasted and applied to the use of tetranuclear coordination clusters as Lewis acid mixed metal catalysts for Bohlmann-Rahtz cyclodehydration and pyridine synthesis. Chapter 3 discusses the use of the Bohlman–Rahtz pyridine synthesis for the preparation of a range of fused heterocycles containing the pyridine moiety in high yield, including 1,3,7-trimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione, 1,3-dimethyl-7-phenylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione, 1,7-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)dione and 1-methyl-7-phenylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione. Chapter 4 describes new substrate scope for the Bohlmann-Rahtz pyridine synthesis by incorporating an amino group at the 2-position of the products. The synthesis of a range of 2,3,6-trisubstituted and 2,3,4,6-tetrasubstituted pyridines was accomplished with total regiocontrol using this new method under microwave-assisted conditions. Chapter 5 describes a new microwave-assisted method for the synthesis of poly-deuterated pyridines. The microwave mediated deuteration of aminopyridine derivatives both with and without the presence of DCl has been studied. The regioselectivity and yields for these processes were compared. Following discovery of a new method for single cycle H/D exchange at multiple positions, high yield and high levels of deuterium incorporation have been found for a range of substrates.
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Costa, Nhandeyjara de Carvalho. "O lado duro da vida fácil a exploração sexual de meninas adolescentes da periferia de Fortaleza-CE e o resgate da cidadania". Universidade de Fortaleza, 2005. http://dspace.unifor.br/handle/tede/70214.
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Previous issue date: 2005-01-28The infant-juvenile sexual exploration is a world problem that uses children and adolescents for prostitution and lucrative ends, transforming them in mere goods, suspending the children's dreams and they are forced to turn women preconciously and stealing them the human dignity. This study had as general objective: to understand the meaning of to be adolescent girl and to live in prostitution situation in a neighborhood of the periphery of the city of Fortaleza-CE. The specific objectives are: 1) to investigate the noticed problems, felt and lived by the adolescents, which influence in their lives in the local context in that they are inserted, 2) to identify existent competences for a healthy sexual life promotion, 3) to subsidize educational strategies that empower the adolescents for the health promotion, through the education and prevention. The study had a descriptive character, with qualitative approach and based in presupposed of the interpretative anthropology. The places of the study were: Vicente Pizon neighborhood - known popularly as Serviluz - where the semi-structured interviews were collected, Beira-Mar Avenue and Light of Porto do Mucuripe where accomplished the free observation on the problem in subject. The data collection period corresponded to the months of August to November of 2004. The subjects were eight adolescent girls from thirteen to seventeen years of age that lived the reality of the prostitution and that they agreed with good grace in participating in the study. The data were analyzed starting from the theoretical referential proposed by Bardin thematic analysis - taking as backdrop theoretical knowledge on Interpretative Anthropology, and others already worked in the literature revision. The results revealed that all the informers possessed life histories marked by pain, suffering and losses front to a reality that shelters the poverty of the slum and the luxury of Beira-Mar Avenue at the same time. There isn´t an only cause, but a multiplicity of factors that push and seduce the adolescents for the life in the street as for instance the affected family structure, the mother prostitute, the financial need and on the other hand the friend´s influences, the work in the street and the seduction of the newspaper announcements that seek girls. The loss of the virginity was mentioned as one experiences loving and a ritual of passage for the prostitution. In spite of the society imagines the life in the prostitution it´s not easy and the adolescents are exposed the every violence type, from beatings until the real death tentative for the customers. Allied the financial need, there is a relationship of power and dominance of the customer on the girl that impedes her of practicing the safe sex. Front the life that the informers take they manifested a low self-esteem and they developed solemnity-protection mechanisms. Finally, they are not noticed how pieces of a power and money game that is sex market. I understand that they need to have conscience of themselves how a thinking and active being in the world that they live, so the girls will have conditions of to exercise their citizenship and to ransom the dignity that the life in the prostitution stole them. As instrument for that conscience decision should have an educational and emancipated action on the part of the government and civil society, each one with the portion of social responsibility for the problem.
A exploração sexual infanto-juvenil é um problema mundial que utiliza crianças e adolescentes para fins prostituidores e lucrativos, transformando-as em meras mercadorias, ceifando os sonhos de crianças que são obrigadas a se tornarem mulheres precocemente e roubando-lhes a dignidade humana. Este estudo teve como objetivo geral: compreender o significado de ser menina adolescente e viver em situação de prostituição num bairro da periferia da cidade de Fortaleza-CE. São objetivos específicos: 1) investigar os problemas percebidos, sentidos e vividos pelas adolescentes, os quais influenciam nas suas vidas no contexto local em que estão inseridas; 2) identificar competências para a promoção de uma vida sexual saudável; 3) subsidiar estratégias educativas que empoderem (empower) as adolescentes para a promoção da saúde, através da educação e prevenção. O estudo é de caráter descritivo, com abordagem qualitativa e embasado em pressupostos da Antropologia Interpretativa. Os locais do estudo foram: o Bairro Vicente Pízon - conhecido popularmente como Serviluz - onde foram aplicadas as entrevistas semi-estruturadas, a avenida Beira-Mar e farol do Porto do Mucuripe, onde se realizou a observação livre sobre o problema em foco. O período de coleta de dados correspondeu aos meses de agosto a novembro de 2004. Os sujeitos foram oito meninas adolescentes de treze a dezessete anos de idade que viviam a realidade da prostituição e que concordaram, de livre e espontânea vontade, em participar do estudo. Os dados foram analisados a partir do referencial teórico proposto por Bardin análise temática tomando como pano de fundo conhecimentos teóricos sobre Antropologia Interpretativa e outros já trabalhados na revisão de literatura. Os resultados revelaram que todas as informantes possuíam histórias de vida marcadas por dor, sofrimento e perdas frente a uma realidade que abriga ao mesmo tempo a pobreza da favela e o luxo da av. Beira-Mar. Não há causa única, mas uma multiplicidade de fatores que empurram e seduzem as adolescentes para a vida na rua como, por exemplo, a estrutura familiar abalada, a mãe prostituta, a necessidade financeira e, por outro lado, a influencia da amiga, o trabalho na rua e a sedução dos anúncios de jornal que procuram garotas. A perda da virgindade foi citada como uma experiência amorosa e um ritual de passagem para a prostituição. Ao contrário do que a sociedade imagina, a vida na prostituição não e fácil e as adolescentes estão expostas a todo tipo de violência, desde espancamentos até a real tentativa de morte pelos fregueses. Aliada à necessidade financeira, há uma relação de poder e dominação do freguês sobre a garota que a impede de praticar o sexo seguro. Frente à vida que levam, as informantes manifestaram baixa auto-estima e desenvolveram mecanismos de autoproteção. Enfim, elas não se percebem como pecas de um jogo de poder e dinheiro, que é o mercado do sexo. Entende-se que somente a partir de uma tomada de consciência de si mesmas como seres pensantes e ativos no mundo em que vivem, é que as meninas terão condições de exercer sua cidadania e reaver a dignidade que a vida na prostituição lhes roubou. Assim, deve haver uma ação educativa e emancipadora por parte do governo e sociedade civil, cada um com sua parcela de responsabilidade social pelo problema.
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Schneider, Frank. "Musikwissenschaft zwischen Ost und West: Eine persönliche Erinnerung". Gudrun Schröder Verlag, 2019. https://ul.qucosa.de/id/qucosa%3A70714.
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Für die Frage nach Kontakten zwischen Musikwissenschaftlern aus Ost und
West kann man von der grundlegenden Beobachtung ausgehen, dass während
der Jahrzehnte des ‚Kalten Krieges‘ trotz der beiden politisch sich feindlich gegenüberstehenden Lager im Bereich der Musik auch sie – wie Komponisten, ausübende Künstler oder Manager in beiden Teilen Deutschlands – in allen Jahrzehnten (allerdings mit großen Schwankungen) kommunikative Beziehungen pflegten.
Sie zwangen damit den vielbeschworenen ‚Eisernen Vorhang‘ zu Durchlässigkeiten, deren Charakter sich im Lauf der Zeiten widerspruchsvoll und krisenreich, aber zielstrebig in Richtung ‚friedlicher Koexistenz‘ veränderte.
Von westdeutscher Seite aus beobachtet man, solange beide Seiten noch in der Gesellschaft für Musikforschung zusammengebunden waren, ein gleichbleibendes Interesse an den Verhältnissen im Osten.
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Drygala, Tim. "Non-Payment of Rent due to the Corona Pandemic: Legally and Ethically Justifiable?" Universität Leipzig, 2020. https://ul.qucosa.de/id/qucosa%3A70814.
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Колентєєва, Н. І. "Формування фінансово-економічної стратегії з метою запобігання банкрутства підприємства". Master's thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/70014.
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Мета роботи - розробка методик та практичних рекомендацій з формування фінансово-економічної стратегії з метою запобігання банкрутства підприємства та забезпечення ефективного антикризового управління.
Об’єктом дослідження – фінансовий механізм формування фінансово-економічної стратегії антикризового управління підприємством.
Предмет дослідження - фінансово-економічні процеси, спрямованих на зміцнення фінансової стійкості, запобігання негативних явищ в бізнесі, відвернення небезпеки кризи і загрози банкрутства та фінансового оздоровлення підприємства.
Методи дослідження - абстрактно-логічний, порівняльний, горизонтальний, вертикальний та коефіцієнтний аналіз.
Основна частина магістерської роботи складається з трьох розділів. У першому розділі наведено концептуальні основи формування фінансово-економічної стратегії з метою запобігання банкрутства підприємства, що передбачає основні складові системи діагностики кризових явищ та антикризового управління підприємством.
В другому розділі розглянуті методика діагностики банкрутства різноманітні показники, які використовуються для аналізу фінансового стану підприємства. Ці показники умовно були розділені на шість груп у відповідності до їх призначення: оцінка активів і зобов’язань підприємства; аналіз ліквідності майна; аналіз фінансової стійкості; аналіз ділової активності; аналіз та оцінка ринкової активності та аналіз рентабельності підприємства.
У третьому розділі проведено аналіз результатів фінансово-господарської діяльності ПАТ «Технологія» за 2017 рік, визначені ризики банкрутства підприємства та запропоновано стратегії із запобігання банкрутства підприємства і конкретні заходи щодо антикризового управління.
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Іваніна, О. В. "Моделювання блогу як спеціалізованого носія масової інформації (на прикладі власного жіночого блогу "Красуня-Style"". Master's thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/70614.
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У роботі розглянуто процес моделювання блогу як спеціалізованого носія масової інформації на прикладі власного жіночого блогу "Красуня-Style". Досліджено проблематику жіночого блогінгу, визначено ефективні методи створення власного-інтернет ресурсу та правила подачі інформації в інтернет-журналістиці.
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Ferreira, Adriana Maria do Nascimento. "ARTE CONTEMPORÂNEA E EXPERIÊNCIAS: UM DIÁLOGO COM PROFESSORAS DE EDUCAÇÃO INFANTIL E ENSINO FUNDAMENTAL". Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/7014.
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This task s purpose was to discuss the experiences of four female teachers, being teacher 1 a pedagogue of child education, teachers 2 and 3 pedagogues of initial years and teacher 4 a bachelor in art education. Monthly meetings were used to promote a dialog with their experiences and with contemporary art. It was a qualitative study, through the Education Cultural Studies theoretical-methodological approach. This research results from the need to think a formative process which may address contemporary questions about art and education. A conclusion is that despite their lack of profound experiences with contemporary art, there are inquietudes which lead to glimpses of such experience, allowing, then, discussions about it.A proposta deste trabalho foi problematizar as experiências de quatro professoras, sendo a professora 1, pedagoga de educação infantil, a professora 2, pedagoga dos anos iniciais, a professora 3, pedagoga também dos anos iniciais e a professora 4, licenciada em educação artística. A partir de encontros mensais buscou-se um diálogo entre a experiência dessas professoras e a arte contemporânea. O estudo foi de cunho qualitativo, a partir da abordagem teórico-metodológica dos Estudos Culturais em Educação. Este estudo decorre da necessidade de se pensar um processo formativo que contemple as questões da contemporaneidade no que se refere à arte e à educação. Conclui-se que apesar de não existir uma experiência aprofundada com a arte contemporânea, há inquietações que vislumbram tal experiência, permitindo, assim, problematizá-las.
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Brandão, Alexandre Fonseca. "Exercício físico progressivo e equilíbrio ácido-base em sangue capilar". Universidade Federal de São Carlos, 2010. https://repositorio.ufscar.br/handle/ufscar/7014.
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Previous issue date: 2010-12-17The analysis of gases and metabolites in arterial and venous blood reflects the condition of homeostasis of the organism and which instantaneous energy demand required, indicating how biological systems behave in front of some physical stress, including the variation of intensity and volume of physical activity performed. Reactions of these compounds maintenance of constant blood pH by neutralization and / or elimination of organic acids derived from the metabolism momentary. It was an objective method, minimally invasive, to evaluate the acid-base resulting from the progressive increase of physical exercise from 100μL of blood capillary. The methodology used was the Balke protocol for cycle ergometer adapted to the operational needs of the equipment Gas Analyzer Radiometer ABL 800. The progressive increase of the load was 50 by 50 Watts until voluntary exhaustion with collecting and analyzing samples of capillary blood. Volunteers are 13 active students (5 women and 8 men) and three amateur athletes UFSCar aged between 20 and 30 years 25 ± 2, and body mass index 24 ± 4. The results are presented in the acid base nomogram Siggaard-Andersen, developed by the pH values between 7.43 ± 0.02 and 7.35 ± 0.04, ABE (Excess Base Real) between 4.16 ± 1 44 and -7.75 ± 3.17 mmol / L, pCO2 between 35.48 ± 2.61 and 37.20 ± 4.67 mmHg and [HCO3-] between 24 and 17 ± 0.6 ± 2.2 mmol / L with analysis of statistical tools ANOVA and Student's t test. The concentration of gases and metabolites present in blood capillary, presents the characteristic behavior expected during graded exercise as the exponential increase of lactate concentration and pH of the linear decay.
A análise de gases e metabólitos, de sangue arterial e venoso, reflete a condição de homeostase instantânea do organismo e qual a demanda energética exigida, indicando como os sistemas biológicos se comportam frente a algum stress físico, entre eles a variação da intensidade e volume da atividade física executada. Reações destes analitos garantem a manutenção do pH sanguíneo através da constante neutralização e/ou eliminação dos ácidos orgânicos derivados do metabolismo momentâneo. Foi objetivo um método, minimamente invasivo, para avaliar o equilíbrio ácido base conseqüente do aumento progressivo do exercício físico a partir de 100μL de sangue capilar. A metodologia utilizada contempla o protocolo de Balke para ciclo ergômetro adaptado as necessidades operacionais do equipamento Analisador de Gases ABL 800 Radiometer. O incremento progressivo da carga foi de 50 em 50 Watts até a exaustão voluntária com coleta e análise das amostras de sangue capilar. Os voluntários são 13 universitários ativos (5 mulheres e 8 homens) e 3 atletas amadores da UFSCar com idade entre 20 e 30 anos 25±2, e índice de massa corporal 24±4. Os resultados são apresentados no nomograma ácido base de Siggaard- Andersen, desenvolvidos através dos valores de pH entre 7,43±0,02 e 7,35±0,04, ABE (Excesso de Base Real) entre 4,16±1,44 e -7,75±3,17 mmol/L, pCO2 entre 35,48±2,61 e 37,20±4,67 mmHg e [HCO3 -] entre 24±0,6 e 17±2,2 mmol/L com análise das ferramentas estatísticas ANOVA e Teste T de Student. A concentração dos gases e metabólitos, presentes no sangue capilar, apresenta comportamento característico ao esperado durante o exercício físico progressivo como o crescimento exponencial da concentração de lactato e o decaimento linear do pH.
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Lippmeier, James Casey. "Fatty acid metabolism of marine microalgae". Thesis, University of Hull, 2007. http://hydra.hull.ac.uk/resources/hull:7014.
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Pathways for the biosynthesis of docosahexaenoic acid (DHA) and other polyunsaturated fatty acids (PUFA) were elucidated in two heterotrophic, marine microalgae; Schizochytrium sp. and Crypthecodinium cohnii. PUFA-requiring auxotrophs of both of these algae were created and used as tools for studying PUFA biosynthetic pathways. Additionally, equilibrium radio-labeling techniques were applied to algal cultures fed 14C-fatty acids. Both organisms were found to possess two distinct pathways for PUFA biosynthesis. One pathway, mediated by classical elongases and desaturases, was incomplete in both organisms and was not capable of complementing PUFA auxotrophic phenotypes or of producing PUFA de novo, but could produce DHA from simpler PUFA precursors. The second PUFA pathway in each organism was desaturase and elongase independent. In C. cohnii, this pathway was distinguished by a capacity to produce DHA from acetate, in a manner similar to that of Schizochytrium which was shown to employ a polyketide synthase (PKS) complex for primary DHA biosynthesis. Additionally, genes of the Schizochytrium PUFA-PKS were successfully expressed in transgenic yeast, which produced DHA. Candidates for genes encoding C. cohnii PUFA-PKS components and other genes of C. cohnii PUFA biosynthesis were identified and discussed.