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Woodruff, Sylvia. "Sherpa women." CSUSB ScholarWorks, 1988. https://scholarworks.lib.csusb.edu/etd-project/402.
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Hall, Oliver Alexander. "Perturbative corrections in SHERPA." Thesis, Durham University, 2014. http://etheses.dur.ac.uk/10557/.
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The use of Monte Carlo event generators for the simulation of LHC collider experiments, has in recent years driven a demand for greater accuracy of predictions in such generators. This thesis will be concerned with the addition of certain perturbative corrections in the event generator SHERPA. In this vein a framework for the automatic calculation of the real correction terms is presented, based on the the subtraction mechanism of of Frixione, Kunszt and Signer. This resulting framework is implemented in the matrix element generator Amegic, which will then allow the calculation of the real components of an NLO QCD for any process; this can be supplemented with virtual corrections to provide a full NLO QCD prediction. This implementation is then rigorously tested and found to be consistent with known NLO results. This subtraction framework is then utilized to perform a series of tests on the relative efficiency of the FKS and Catani Seymour subtraction methods; these tests are conducted over multiple processes and the affect of the multiplicity of the state is investigated. In addition the contribution of photon induced processes to lepton and W boson production is discussed, taking into account contributions from the QED part of parton distribution functions and from equivalent photons in the Weizsaecker Williams approximation. Typically these processes contribute on the per cent level compared to standard quark and gluon-induced processes; however, when applying various cuts this picture may change and the photon induced processes may become significant.
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Archibald, Jennifer. "An automated NLO framework in Sherpa." Thesis, Durham University, 2011. http://etheses.dur.ac.uk/3286/.
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There has recently been a strong drive towards next-to-leading order (NLO) accuracy in Monte Carlo event generators. This thesis is concerned with the implementation of a framework for NLO calculations within the matrix element generator AMEGIC++, which forms part of the Monte Carlo event generator Sherpa. An interface is presented for the connection of one-loop matrix elements to Sherpa, conforming with the Binoth Les Houches Accord. Automated Catani-Seymour dipole subtraction is presented for the cases of QCD corrections for processes involving massive final state particles, and the supersymmetric partners of quarks and gluons, namely squarks and gluinos. Similar dipole subtraction techniques are also applied to the case of photonic corrections. An automated implementation of on-shell subtraction, relevant for separating real-emission NLO corrections from leading order production and decay processes, is also presented. With the completion of this work, the event generator Sherpa, when interfaced to suitable one-loop code, is equipped to calculate all necessary components of QCD and electroweak NLO calculations.
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Skublics, Suzanne Carole Carleton University Dissertation Computer Science. "Sherpa: guiding students up the Smalltalk mountain." Ottawa, 1991.
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Thompson, Jennifer Mary. "High precision simulations of electroweak physics with Sherpa." Thesis, Durham University, 2015. http://etheses.dur.ac.uk/11294/.
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One vital theoretical tool in the ever-improving description of particle physics is Monte Carlo event simulation. With the CERN LHC currently exploiting the highest energies in any human-made experiment, with unprecedented precision for a range of processes, very precise theoretical models are strongly motivated. This thesis introduces an implementation of Sudakov logarithms, which are a high-energy approximation to the exact NLO calculation of the electroweak quantum theory, within the Sherpa Monte Carlo framework. As well as this, it validates and applies the Sherpa + OpenLoops interface to a range of interesting electroweak processes at NLO in QCD. One key area of study in the electroweak sector is that of high multiplicities of weak bosons in the final state, which are motivated by the insight these studies could provide into the recently discovered 125 GeV particle, with properties consistent with the Standard Model Higgs boson. Furthermore, several electroweak processes are key backgrounds in searches for physics beyond the Standard Model. In addition, leading order results are presented for more complex electroweak processes for which such a high level of precision has not yet become necessary. The thesis is concluded with studies at a potential future 100 TeV proton-proton collider.
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Skog, Lindsay Ann. "Beyul Khumbu: Sherpa Constructions of a Sacred Landscape." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/2183.
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Khumbu, part of Sagarmatha (Mt. Everest) National Park in eastern Nepal and an UNESCO World Heritage site, is home to the Sherpa people, ethnic Tibetan Buddhists who migrated to the region more than 500 years ago. Sherpas animate the landscape with localized water, tree, rock, and land spirits, identify sacred mountains, mainly associated with the Bönpo and Tibetan yullha traditions, and some view the landscape as a beyul, a sacred place and hidden valley protecting Buddhist people and beliefs in times of turmoil and need. These beliefs protect the natural environment through religious practices and taboos against environmentally harmful behaviors and activities. Associated ritual practice, perceptions, and mythology encode Sherpa culture and beliefs in the landscape. This research contributes to discussions of place, sacred landscapes, and conservation by documenting older Sherpa residents’ constructions of Khumbu as a sacred landscape in two Khumbu villages. Interviews and participant observations reveal a socially constructed sacred landscape expressing a distinct Khumbu Sherpa identity.
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Ronan, Carah Dawn. "AnOther language." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/ronan/RonanC1207.pdf.
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Sergiadis, Ashley D. R. "Evaluating Zotero, SHERPA/RoMEO, and Unpaywall in an Institutional Repository Workflow." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/etsu-works/4739.
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East Tennessee State University developed a workflow to add journal publications to their institutional repository and faculty profiles using three tools: Zotero for entering metadata, SHERPA/RoMEO for checking copyright permissions, and Unpaywall for locating full-text documents. This study evaluates availability and accuracy of the information and documents provided by Zotero, SHERPA/RoMEO, and Unpaywall for journal publications in four disciplines. The tools were less successful with works authored by arts and humanities and education faculty in comparison to works authored by medicine and health sciences and social and behavioral sciences faculty. The findings suggest that publisher practices contributed to the disciplinary differences.
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Adhikari, Bidhya. "A syntactic contrastive study of Sherpa and English with occasional reference to Nepali and Hindi and a brief Sherpa-English dictionary data interpretation based on a linguistic fieldwork research project." Berlin Viademica-Verl, 2008. http://d-nb.info/988160994/04.
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Vasconcelos, Ticiana Paiva de. "A atitude clínica no plantão psicológico : composição da fotografia experimental do terapeuta-sherpa." Universidade de Fortaleza, 2009. http://dspace.unifor.br/handle/tede/82766.
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Previous issue date: 2009-10-26<br>Esta pesquisa objetivou elucidar as atitudes clínicas desenvolvidas e sustentadas pelo psicoterapeuta que atende no Plantão Psicológico. A modalidade clínica denominada Plantão Psicológico, quando praticada sob o referencial da Abordagem Centrada na Pessoa, propõe que o plantonista adote a tríade de condições facilitadoras ao crescimento (empatia, congruência e apreço positivo incondicional) e possibilite um campo de atualização para a pessoa em emergência emocional. A Atitude Clínica, que seria o conjunto de características, capacidades e proficiências que são pertinentes ao atendente de Plantão, referem-se ao posicionamento global em relação ao outro, ao modo de se inclinar ao sofrimento do outro. Através do método heurístico, pode-se adentrar a experiência de ser um terapeuta no universo do Plantão, sorvendo sentidos e possibilitando a recriação e apreensão da experiência. Althea, plantonista colaboradora desta pesquisa, foi acompanhada por mim em oito turnos de Plantão. Assim, elucidou-se três dimensões pertinentes a atitude clínica do plantonista: intra-subjetiva (o plantonista em relação a si, descrevendo aspectos da constituição de sua congruência); inter-subjetiva (a relação dele com o outro, desvelando aspectos da relação de cuidado) e trans-subjetiva (para além do plantonista, explorando porções formativas pertinentes ao atendimento). Desta forma, pode-se constituir a fotografia experiencial da atitude clínica do plantonista, desbravando as nuances e contornos do terapeuta-sherpa. Conclui-se que é necessário investigar e construir novas fotografias experienciais para uma compreensão global do Plantão Psicológico enquanto uma modalidade de intervenção psicológica, bem como desenvolver novas metodologias para a formação de terapeutas-sherpas.
Palavras-chave: 1. plantão psicológico; 2. atitude clínica; 3. método heurístico; 4. abordagem centrada na pessoa; 5. atendimento de emergência
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Sergiadis, Ashley D. R., and Ethan Reynolds. "Sustaining Workflows and Budget: Using Zotero, SHERPA/RoMEO, and Unpaywall to Input Faculty Works." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/2418.
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Charles C. Sherrod Library was tasked with inputting faculty works in the open access institutional repository, Digital Commons@East Tennessee State University (https://dc.etsu.edu). In order for this project to remain sustainable with limited staffing and funding, they created a workflow around the integration of Zotero and SHERPA/RoMEO to input data and check copyright in addition to Unpaywall to locate open access documents. This presentation will detail the technical aspects and workflow of using these freely available products so that attendees can replicate all or relevant parts of this project. After a year of using the products, Sherrod Library completed a quantitative study on the quality records available in Zotero based on disciplines and document types. The study discovered that the education and arts/humanities fields were poorly represented in contrast to the social/behavioral sciences and medicine/health sciences fields. Furthermore, journal articles, books, and book contributions were better represented in Zotero than newsletters and magazine articles, conference proceedings, and music albums. Consequently, Sherrod Library continues to use the products primarily for journal articles, books, and book contributions by STEM faculty. The outcomes of this study can inform content providers on how to best sustain open data through their websites’ structures and metadata practices.
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Puschiasis, Ornella. "Des enjeux planétaires aux perceptions locales du changement climatique : pratiques et discours au fil de l’eau chez les Sherpa du Khumbu (région de l’Everest, Népal)." Thesis, Paris 10, 2015. http://www.theses.fr/2015PA100157.
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La région de haute montagne népalaise de l’Everest (Khumbu) est devenue un lieu emblématique de la diffusion des discours scientifiques et médiatiques sur le changement climatique en Himalaya. Les images de fonte des glaciers y alimentent une rhétorique alarmiste sur l’avenir de la ressource en eau et de sa disponibilité pour les populations himalayennes, cependant de nombreuses incertitudes demeurent. L’interprétation des modèles climatiques se heurte au manque de fiabilité des données et aux échelles appréhendées. Dans cette thèse, en interrogeant les habitants sur leurs pratiques impliquant la ressource en eau et sur leur perception du climat, nous apportons un éclairage susceptible de compléter ces modèles. Les variations du climat et leurs conséquences sur les usages et la gestion de l’eau sont étudiés en combinant les échelles et les disciplines, en confrontant des données relevant de l’hydrologie comme de la géographie, et en les replaçant dans un contexte où les changements sont aussi d’ordre social, économique et culturel. Les Sherpa ne se réduisent plus seulement à l’image de bouddhistes et de guides de haute montagne, ils constituent aujourd’hui une société fortement interconnectée depuis le virage touristique du Khumbu engagé dans les années 1950. L’étude de la gestion de l’eau révèle des logiques d’organisation et de restructuration d’un espace touristique fortement orienté vers l’international. Et il apparaît que les changements d’usages de l’eau au cours des dernières décennies sont davantage associés à l’insertion des habitants dans cette économie touristique qu’à des réponses au changement climatique. Les variations climatiques semblent donc être des préoccupations minimes à l’échelle locale tandis qu’elles alimentent les inquiétudes à une échelle mondiale. Ce décalage et les déformations discursives qui s'opèrent contribuent à alimenter un climat de tension dans la région où se pressent chercheurs, journalistes et experts internationaux<br>The region of the Everest high mountains in Nepal (Khumbu) became an emblematic place of the broadcast of science and media narratives about climate change in the Himalayas. The pictures of the glaciers melting feed an alarmist rhetoric on the future of water resources and its availability for the population of the Himalayas. However there are many uncertainties. The interpretation of climate models faces the lack of reliability of the data and at the featured scales. In this thesis, by questioning the population about their habits on water resource and their perception of climate, we bring a highlight prone to fill these models. The climate change and its consequences on water use and management are studied by combining the scales and disciplines, by comparing some data from hydrology as well as geography and by replacing them in a context where the changes are also of social, economic and cultural order. The Sherpas are not only seen as Buddhists and high mountains guides but are nowadays a highly interconnected society since the touristic turn that happened in Khumbu in the 1950’s. The study of water management reveals some organisational and restructuring logics of a touristic space highly headed for the international. It appears that the changes of water use during the last decades are rather lied to the insertion of inhabitants in this touristic economy than a response to the climate change. The climate variations seem to be minor concerns at the local scale whereas they feed worries at the global scale. This discrepancy and the ongoing narratives’ distortions contribute to create a climate of tensions in this region where researchers, journalists and international experts are rushing
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Heydon, Susan, and n/a. "Modern medicine and the Sherpa of Khumbu : exploring the histories of Khunde Hospital, Nepal 1966-1998." University of Otago. Department of History, 2006. http://adt.otago.ac.nz./public/adt-NZDU20070119.122329.
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The celebrated Sherpas of Himalayan mountaineering, who lived in the rugged high-altitude environment of the Everest area of Nepal, lacked Western style medical services and so iconic New Zealander, Sir Edmund Hillary, 'hero' of Everest, built them a small hospital in 1966. He administered Khunde Hospital through the Himalayan Trust, but with substantial support, since the late-1970s, from the Sir Edmund Hillary Foundation in Canada. Overseas medical volunteers assisted by local staff provided a range of outpatient and inpatient, curative and preventive services. The history of Khunde Hospital, therefore, provides a case study for the introduction of modern medicine, as Sherpas referred to Western or biomedicine, and for the implementation of an overseas aid project.
In my analysis I have moved away from a binary, oppositional examination of a cross-cultural encounter and have situated Khunde Hospital in a conceptual device of 'worlds'. I argue that the hospital existed and operated simultaneously within multiple separate yet interconnected worlds, but do not privilege one discourse over another. These worlds work beyond culture, encompassing institutions, political structures and knowledge communities and were physical, social and intellectual spaces within which there were rules and norms of behaviour that structured action.
In order to explore the histories of Khunde Hospital I set it within four distinct but overlapping worlds: that of Sir Edmund Hillary, the Sherpa, Western medicine and international aid. These are worlds that I have identified as being important for the questions I am looking at. My central discussion is the ongoing encounter between Sherpa beliefs and practices about sickness and modern medicine, particularly looking at the individual patient�s use and non-use of the hospital and how staff there responded. The response was neither a one-way diffusion of Western medical practice, nor a collision between the spirit-suffused system of the Sherpa and scientific biomedicine. People used the hospital for some things but not others, based on their perception as to whether the hospital was the effective, appropriate option to take. Over the years, the hospital and community became used to each other in a relationship that was in practice a coexistence of difference. Each acknowledged and could incorporate aspects of the other�s beliefs and practices when dealing with a person�s sickness, but remained separate.
Using the conceptual device of worlds, however, suggests the need for this example of the introduction and spread of Western medicine to be grounded in a consideration of Hillary�s particular form of aid, the shifting discourse of international medical aid between the 1960s and the 1990s and the unique world of the Sherpa of Khumbu. All of these worlds influenced the provision of health care at and from Khunde Hospital in different ways, sometimes separately but often simultaneously, and at some times and for some issues more than others. People, place and relationships often had as much influence as - and sometimes more than - the medicine. If the key to understanding Khunde Hospital is the relationship between Sherpas and Hillary and the respect that began in a partnership on the mountains in the 1950s, then the multiple worlds of Khunde Hospital underscore the complexities of implementing Sherpa requests to build a hospital in their rugged home near the world�s highest mountain.
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Jacobson, Calla. "Sociable poetics : representing and interpreting culture and difference in Nepal's Middle Hills /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
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Damini, Enrico. "Implementazione di un algoritmo di navigazione autonoma di alto livello e sviluppo software di una Control Ground Station." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10390/.
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Caratteristiche hardware di un rover terrestre (progetto SHERPA).
Implementazione tramite il framework ROS di un algoritmo di alto livello di navigazione autonoma basato su due possibili algoritmi di basso livello: LOS (Lightweight Object Streaming developed by BlueBotics) o Navigation Stack.
Sviluppo di una Control Ground Station (Java) basata su: protocollo SSH2 oppure sfruttando la libreria LOS.
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McGinsky, Elizabeth Ann. "Analyses of Sex Ratios among Residents of the Khumbu of Nepal Support the Trivers-Willard Hypothesis." Master's thesis, Temple University Libraries, 2011. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/120545.
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Anthropology<br>M.A.<br>The Trivers-Willard hypothesis predicts a sex ratio bias contingent on maternal condition in species characterized by variation in male reproductive success. A male-biased sex ratio among mothers in good condition, and a female-biased sex ratio among mothers in poor condition is expected. Studies in humans have thus far provided mixed answers to the question of whether or not sex ratio is affected by maternal condition. The present study assessed whether or not the introduction of a western cash economy influenced the observed secondary sex ratio in Nepal's Khumbu region. Because acculturated villages provided better access to the cash economy and to health facilities, residence in an acculturated village was used as a proxy for "good" maternal condition. I analyzed demographic data gathered by survey in 1971 and 1982. The sample included 734 children from the 1971 survey and 1598 children from the 1982 survey. Using Poisson regression I analyzed the extent to which the sex ratios in age-stratified groups differed between the acculturated and unacculturated villages. In the 1971 dataset, the younger women in the acculturated villages displayed a significantly higher (p=.014) proportion of male offspring. It is likely that older women were subjected to minimal acculturation effects during their child-bearing years and among these data there was a lack of significant deviation between acculturated and unacculturated post-menopausal women. The rapid overall increase in acculturation between 1971 and 1982 likely made conditions in the two sets of villages much more similar by 1982. The results of this study underscore the impact that the transition to a market economy had on women in Nepal's Khumbu region.<br>Temple University--Theses
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Jacquemet, Etienne. "La société sherpa à l’ère du « Yak Donald’s » : lutte des places pour l’accès aux ressources dans la région touristique de l’Everest (Népal)." Thesis, Bordeaux 3, 2018. http://www.theses.fr/2018BOR30026/document.
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Au-delà des représentations et des pratiques des alpinistes et trekkeurs, toujours plus nombreux, les conditions du développement et de la pérennisation du système touristique associées à la région népalaise de l’Everest – le Khumbu – semblent de plus en plus reposer sur la valorisation de ressources comme l’eau, l’électricité et l’emplacement foncier. Source de revenus considérables pour les populations locales, et plus particulièrement pour les hébergeurs touristiques, l’accès à ces différentes ressources ne va pourtant pas de soi. Tous les acteurs n’occupent pas les mêmes positions, ni ne possèdent les mêmes moyens pour les valoriser. Cet accès aux ressources, et par extension à de nouvelles positions socio-spatiales, donne lieu à de multiples stratégies fondées sur les capitaux, compétences et intérêts de chacun. Dans cette petite région, néanmoins hautement symbolique, ces stratégies d’accès aboutissent à une lutte des places entre d’une part les membres de la communauté sherpa – qui revendiquent une position d’insiders mais se déploient à l’extérieur du Khumbu par des modes d’habiter très polytopiques –, et d’autre part, de nouvelles populations originaires des basses vallées, en position d’outsiders, qui cherchent à s’y implanter. Dans le contexte d’un espace de plus en plus ouvert sur le monde, en pleine recomposition sociodémographique et culturelle, ce qu’incarne le « Yak Donald’s » – l’un des nombreux nouveaux pubs implantés dans la région –, se pose ainsi la question du partage et de la gouvernance des ressources et des revenus de ce haut-lieu du tourisme. Loin d’être passifs, mais plutôt à l’origine de ces nouvelles dynamiques, cette thèse montre comment les manipulateurs de symboles sherpas contrôlent encore largement le territoire et l’économie du tourisme<br>Beyond the representations and practices of mountaineers and trekkers, conditions for the development and functioning of the touristic system linked to the Nepalese Mount Everest area (the Khumbu region) seem to be increasingly based upon resources such as water, electricity and property. With the rise of tourism, these various resources are source of considerable incomes for local populations, especially for lodge owners. However, sharing these resources is not simple. First, the different actors do not occupy the same positions in relation to them. Second, they don’t have the same capacities (i.e., capital and skills) to exploit them. Eventually, they do not have the same interests depending on their social status, so their cooperation is not always guaranteed. In this small but highly symbolic region, local access to resources leads to “locational struggles” (Lussault, 2009). This struggle opposes members of the Sherpa community - who claim to be deeply rooted inhabitants, but whose ways of life are very polytopic – and on the other hand, new populations from the lower valleys, who seek to establish themselves within the Khumbu region. In the context of intense interrelations with the rest of the world, as well as wide socio-demographic and cultural changes, which is embodied in one of the many new pubs established in the region; the "Yak Donald's", this questions the good resources governance of this tourist hub. Far from being passive, but rather very proactive, this thesis shows how the Sherpas still control the territory and its touristic economy
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Viarchi, Isabella. "Progetto e sviluppo di un automa per la gestione ed il controllo di sistemi a pilotaggio remoto." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016.
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L’attenzione di questa tesi si pone sulla progettazione e lo sviluppo di un automa per il controllo di sistemi a pilotaggio remoto.
Punto di partenza dell'intero progetto è stata l'analisi del quadrirotore programmato ed utilizzato dai ricercatori del progetto SHERPA.
Le funzionalità evidenziate dall'analisi sono state poi elaborate secondo l'approccio con Attuatore Generalizzato ed implementate in Codesys.
Questo software si compone di una parte di controllo, una di simulazione ed una o più interfacce grafiche dedicate all'interazione con l'utente.
L'utilizzo di Codesys ha permesso di implementare un automa modulare e riusabile, base di partenza per i futuri progetti di automi aerei.
L'automa realizzato consente infine di simulare il comportamento di un generico sistema a pilotaggio remoto e di osservarne la sequenza logica con cui le azioni vengono eseguite.
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Křížek, Stanislav. "Vliv bíle a žlutě kvetoucí řepky na výskyt přirozených nepřátel škůdců." Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-259140.
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The insect society living in oilseed rape is large. Change of the crop characteristics affects both harmful species and beneficious ones. The latter group consists of a lot of members of order Hymenoptera. This work focuses on the evaluation of impact of white oilseed rape cultivation on the insect society in comparison with two yellow winter varieties. Newly bred winter oilseed rape line variety Witt was compared to two hybrid varieties of yellow rape; Sherpa and DK Sensei. The experiment was carried out in 2015 and its plots were placed at Ruzyně at Crop Reserach Institute (VÚRV, v. v. i.) and also at the Experimental Unit of Czech University of Life Sciences (ČZU) in Uhříněves. The insects were collected by sweeping net, soil larvae traps and soil emergence traps. The occurrence of serious pests (pollen beetle Brassicogethes aeneus, brassica pod midge Dasineura brassicae, cabbage seed weevil Ceutorhynchus obstrictus, stem flea beetle Psylliodes chrysocephalus and cabbage flea beetles Phyllotreta sp.) was recorded. Dominant parasitoid species were Tersilochus heterocerus, Platygaster subuliformis, Trichomalus perfectus, Mesopolobus morys and Omphale clypealis. The level of pest mortality was evaluated. Numbers of species identified by key were processed using generalized linear model method in R statistical software. The results confirm suitability of the assessed varieties in the white oilseed rape cultivation system, notably in the combination of Sherpa and Witt. They give an insight into parasitoid community of oilseed rape in Czech republic, which is useful for management of serious pest species.
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Schönherr, Marek. "Improving predictions for collider observables by consistently combining fixed order calculations with resummed results in perturbation theory." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-83876.
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With the constantly increasing precision of experimental data acquired at the current collider experiments Tevatron and LHC the theoretical uncertainty on the prediction of multiparticle final states has to decrease accordingly in order to have meaningful tests of the underlying theories such as the Standard Model. A pure leading order calculation, defined in the perturbative expansion of said theory in the interaction constant, represents the classical limit to such a quantum field theory and was already found to be insufficient at past collider experiments, e.g. LEP or Hera. Such a leading order calculation can be systematically improved in various limits. If the typical scales of a process are large and the respective coupling constants are small, the inclusion of fixed-order higher-order corrections then yields quickly converging predictions with much reduced uncertainties. In certain regions of the phase space, still well within the perturbative regime of the underlying theory, a clear hierarchy of the inherent scales, however, leads to large logarithms occurring at every order in perturbation theory. In many cases these logarithms are universal and can be resummed to all orders leading to precise predictions in these limits. Multiparticle final states now exhibit both small and large scales, necessitating a description using both resummed and fixed-order results. This thesis presents the consistent combination of two such resummation schemes with fixed-order results. The main objective therefor is to identify and properly treat terms that are present in both formulations in a process and observable independent manner.
In the first part the resummation scheme introduced by Yennie, Frautschi and Suura (YFS), resumming large logarithms associated with the emission of soft photons in massive Qed, is combined with fixed-order next-to-leading matrix elements. The implementation of a universal algorithm is detailed and results are studied for various precision observables in e.g. Drell-Yan production or semileptonic B meson decays. The results obtained for radiative tau and muon decays are also compared to experimental data.
In the second part the resummation scheme introduced by Dokshitzer, Gribov, Lipatov, Altarelli and Parisi (DGLAP), resumming large logarithms associated with the emission of collinear partons applicable to both Qcd and Qed, is combined with fixed-order next-to-leading matrix elements. While the focus rests on its application to Qcd corrections, this combination is discussed in detail and the implementation is presented. The resulting predictions are evaluated and compared to experimental data for a multitude of processes in four different collider environments. This formulation has been further extended to accommodate real emission corrections to beyond next-to-leading order radiation otherwise described only by the DGLAP resummation. Its results are also carefully evaluated and compared to a wide range of experimental data.
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Santoni, Alessandro. "A ROS-based Workspace Control and Trajectory Planner for a seven degrees of freedom Robotic arm." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10919/.
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In this Bachelor Thesis I want to provide readers with tools and scripts for the control of a 7DOF manipulator, backed up by some theory of Robotics and Computer Science, in order to better contextualize the work done.
In practice, we will see most common software, and developing environments, used to cope with our task: these include ROS, along with visual simulation by VREP and RVIZ, and an almost "stand-alone" ROS extension called MoveIt!, a very complete programming interface for trajectory planning and obstacle avoidance.
As we will better appreciate and understand in the introduction chapter, the capability of detecting collision objects through a camera sensor, and re-plan to the desired end-effector pose, are not enough. In fact, this work is implemented in a more complex system, where recognition of particular objects is needed.
Through a package of ROS and customized scripts, a detailed procedure will be provided on how to distinguish a particular object, retrieve its reference frame with respect to a known one, and then allow navigation to that target.
Together with technical details, the aim is also to report working scripts and a specific appendix (A) you can refer to, if desiring to put things together.
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Wathall, Paul. "A randomised controlled trial to explore the effects of components of a self-help intervention to promote exercise and psychological adjustment in homebased rehabilitation patients with stable angina (SHERPA Trial)." Thesis, University of York, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.441056.
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Cinesi, Andrea. "Installazione del navigation stack su rover terrestre e applicazione del kinect nello human-robot interaction." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/10392/.
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Progetto SHERPA.
Installazione e configurazione del Navigaton Stack su Rover terrestre.
Utilizzo e configurazione di LMS151 Sick.
Utilizzo e configurazione di Asus Xtion Pro.
Progettazione di software per la localizzazione e l'inseguimento di persone tramite camera di profondita.
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Ricciardi, Francesco. "Automatic search of missing people in avalanches." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15282/.
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One of the main source of danger for people practising activities in mountain environments is avalanches. In the early 70s has been commercialized the first model of avalanche beacon transceiver: a device, composed by a transmitter and a receiver, specialized to the purpose of finding people buried under the snow. Since 2013, project SHERPA is working to develop ground and aerial robots to support human in the search of missing people in avalanches.
The aim of this dissertation is to provide a way to interface an avalanche beacon receiver (ARTVA) with the autopilot module mounted on a quad-copter drone, and to study and realize a software implementation of two automatic search algorithms, with the intention of speeding up search operations with drones.
First we will focus on interfacing the ARTVA system with a quad-copter autopilot module, named Pixhawk. This module embed a software, named PX4, which runs on a real-time operating system (RTOS), and have several connection ports, among which there is the serial one that we will use for our purpose. Then we will analyse how to use the data coming from the ARTVA receiver to construct and implement the two search algorithms. The idea is to generate set-points, based on the information coming from the avalanche beacon receiver, and use them to feed the position controller which is implemented in the PX4 firmware. Finally, we will execute simulations, provide results, and investigate if a practical implementation is possible and what are the relative issues.
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Lundberg, Molly. "Error Identification in Tourniquet Use : Error analysis of tourniquet use in trained and untrained populations." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-171588.
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The number of prehospital deaths caused by large bleedings could be decreased if civilian people would act in time to help the injured patient. One way to help is to stop the bleeding with a tourniquet application. However, the tourniquet needs to be placed correctly in order to stop the bleeding. Therefore laypersons need to be educated in bleeding control to increase the rate of successful tourniquet application. This study used human error identification techniques such as Hierarchical Task Analysis and Systematic Human Error Reduction and Prediction Approach to identify possible errors of four commonly used tourniquet models: the CAT-7, Delfi-EMT, SAM-X and SWAT-T. The results show that many predicted errors are time-oriented and critical. Video analysis of tourniquet application was performed to map occurred use errors from the videos with the predicted ones. The goal was to identify problems that could be solved by training or redesigns of the tourniquets. The results show that the most common errors for all participants during tourniquet application were of six error types. The errors were to not check time or write down time of application, to take too much time to place the tourniquet around the limb, to place the tourniquet upside down, to place the tourniquet band over the securing mechanism instead of between and lastly to not secure the tourniquet correctly before transporting the patient. The untrained laypersons made more errors than the trained laypersons and professional emergency personnel group. The trained laypersons also made fewer errors in a calm setting than in a stressed setting, comparing to the professional group who did the same error types in both settings. The results indicate that untrained laypersons not only make more errors but also more critical errors than trained laypersons and professional emergency personnel. Future research should empirically test other tourniquet models than the CAT in the goal of finding use errors to be reduced. Overall the results are in line with previous studies that show the need for education of bleeding control techniques in the civilian population.
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Bergander, Henrik. "Utvärdering av kvalité och dess behov inom förprovtryck." Thesis, Högskolan Dalarna, Grafisk teknik, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:du-3519.
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It always has been a need for the abiltiy to create color proofs. When an error occurs late in the production process, itis allways complicated and difficult to correct the error. In this project, digital proofs been made and discussions havebeen held with several people in the printing industry, in order to examine how well excisting digital proofs, meet thedemand of the market. And how close the digital proofs can come to the actual printsheat from the press. The study hasbeen shown that the one thing that has had the most influence on the outcome for the quality of a digital proof, is theprintshop operator’s knowledge about color management and proofing systems. Many advertising agencies in the graphicindustry think rasterised proofs are not necessesary and expensive. Therefor they prefer a cheaper alternative, whichdoesn’t show colors as well as the rasterised proof, but well enough to be content with it. There are a good awarenessconcerning lack of communication between printshop, reproduction and advertising agency. Advertising agencies thinkthat printshop rarely listen to what they have to say, while the printshop think that the advertising agency doesn’t understandwhat they are trying to tell them. The outcome of the printed proofs in this study can’t be representive for howgood digital proofs are conducted in regular basis in the industry. The divergence between the print press sheat and thedigital proof that was made was bigger than expected. This shows that implementation of ICC profiles in a color managementflow, not alone is the answer to making perfect digital proofs. There are so many other issues that has to be examined,like color management software, measure tools and correct color management module. In order to make a perfectproof, you have to look at the whole picture. In the end, the human eye finally has the last word on wheather theproof is good or not.
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Doan, Thi Kieu Oanh. "Mesure de la section efficace différentielle de production du boson Z se désintégrant en paires électron-position, dans l'expérience ATLAS." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00846877.
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La première mesure du spectre en phi*_eta du boson Z à 7 TeV a été réalisée dans cette thèse. Cette variable permet de sonder la dynamique de production des Z de façon fine. L'échantillon complet des données enregistrées par ATLAS en 2011 a été utilisé ce qui correspond à 4.7/fb de luminosité intégrée. Les résultats de cette mesure sont publiés dans la Ref. [18] fondé sur la note interne Ref. [69]. La section efficace différentielle de Z->ee en fonction phi*_eta a été mesurée et comparée aux calculs perturbatifs à ordre fixé, avec/sans resommation pour la région des petits phi*_eta. Le code RESBOS fournit la meilleure description des données, cependant il est incapable de reproduire, à mieux de 4%, la forme détaillée de la section efficace mesurée. La section efficace différentielle a également été comparée aux prédictions de différents générateurs Monte Carlo interfacés avec un algorithme de parton shower. Les meilleures descriptions du spectre en phi*_eta mesuré sont données par les générateurs SHERPA et POWHEG+PYTHIA8. La mesure précise de la section efficace différentielle en phi*_eta fournit des informations précieuses pour l'ajustement des codes Monte Carlo. La précision expérimentale typique de cette mesure (~0.5%) est dix fois meilleure que la précision des calculs théoriques et elle est donc aussi précieuse pour contraindre la théorie. La mesure du spectre en ptZ a également été faite pour quantifier l'incertitude systématique de cette mesure en utilisant la grande statistique de l'échantillon de données. Cela permet de comparer deux mesures qui traitent de l'impulsion transverse du boson Z. Dans la plupart du domaine en phi*_eta l'incertitude systématique de la mesure de ptZ est deux fois plus grande que celle de la mesure de phi*_eta. Cette comparaison confirme l'intérêt de la variable phi*_eta. Les résultats présentés dans cette thèse ont beaucoup d'implications pour les études futures. Ajustant les générateurs Monte Carlo en utilisant les résultats de la mesure précise du spectre en phi*_eta minimisera l'incertitude sur leurs paramètres. Une mesure de la section efficace doublement différentielle en ptZ et phi*_eta est intéressante pour mieux comprendre la corrélation entre ces deux variables. La mesure précise du spectre en ptZ utilisant la variable phi*_eta peut être appliquée au spectre en ptW et on sait que des mesures plus fines du ptW sont importante pour une détermination précise de la masse du boson W. De plus, une compréhension précise du spectre en ptZ est importante pour comprendre les propriétés cinématiques de la production du boson de Higgs.
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Thümer, Ingrid. "Open Access an der Technischen Universität Chemnitz." Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200601865.
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Mit der Sonderausgabe des Newsletters 2/2006 möchte die Universitätsbibliothek ergänzend zum Rundschreiben des Rektors 02/2006 den Angehörigen der TU Chemnitz weitere Informationen zum Thema Open Access (OA) geben. Die Universitätsbibliothek begrüßt den Beschluß von Rektorat und Senat zur Unterstützung von Open Acces an der TU Chemnitz mit dem Wortlaut - Rektorat und Senat der TU Chemnitz fordern die Autoren der Universität nachdrücklich auf, ihre wissenschaftlichen Publikationen als Pre- oder Postprintversion, soweit rechtliche Bedenken der Verlage nicht entgegenstehen, auf dem Publikationsserver MONARCH der TU Chemnitz abzulegen. - Rektorat und Senat ermutigen die Wissenschaftler der TU Chemnitz, in bestehenden Open-Access-Zeitschriften zu publizieren. Gerade die Bibliothek der TU Chemnitz als Dienstleister für Wissenschaftler und Studierende hat die Auswirkungen der Zeitschriftenkrise bitter zu spüren bekommen. Eine drastische Reduzierung des Zeitschriftenbestandes seit Mitte der 90er Jahre ist die Folge. Schon lange beklagen die Wissenschaftler diese Situation. Die Universitätsbibliothek ist der Auffassung, dass langfristig und durch eine weltweite Unterstützung von Open Access diese Entwicklung korrigiert und die Krise im System der wissenschaftlichen Kommunikation überwunden werden kann. Die Etablierung des "Prinzips des offenen Zugangs" setzt jedoch die aktive Beteiligung jedes einzelnen Produzenten von wissenschaftlicher Information voraus. Entscheidend für die erfolgreiche Umsetzung der geplanten Open Access Aktivitäten an der TU Chemnitz ist die Akzeptanz unter den Wissenschaftlern und vor allem deren aktive Unterstützung<br>This is a special issue of the library's newsletter. In addition to the rector-circular 02/2006 we would like to give you further information about open access publishing at our university. The library welcomes the joint resolution recently made by the university's rectorate and its senate to support open access publishing at Chemnitz University of Technology. - Rectorate and Senate of Chemnitz University of Technology invite the authors to publish their scientific works as pre- or postprintversion in MONARCH, under attention of the copyright. - Rectorate and Senate encourage the scientists to publish in open access journals. The library as a service provider for scientists and students is confronted with the effects of journal crisis. A dramatically reduction of acquired journal titles is the result. The university library is in the conviction that a long-term and world-wide support of Open Access can corrected and negotiate this development. Therefore is the activity of each individual producer of scientific information important. The acceptance and assistance from our authors is the base for transposition Open Access to the Chemnitz University of Technology
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Pires, Michele Porto [UNESP]. "Planejamento e implementação de um programa de melhoramento genético de ovinos no oeste paulista." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/92565.
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pires_mp_me_jabo.pdf: 1499100 bytes, checksum: 36601d48bc1009bc104fa6338a8ec4ee (MD5)<br>Os objetivos desse estudo foram planejar e implementar um programa de melhoramento genético de ovinos no oeste paulista e estimar parâmetros genéticos de características de crescimento e de carcaça em ovinos Suffolk, afim de traçar estratégias de seleção para programas de melhoramento genético. Os dados analisados para a realização do primeiro objetivo, foram coletados da prova de ganho de peso realizada em 2009, sendo os animais oriundos de 11 propriedades próximas a região de Dracena. As características avaliadas foram peso ajustado aos 150 dias de idade (P150) e ganho de peso médio diário (GPD). Para o auxílio da classificação dos cordeiros um índice da prova de ganho de peso (Ipgp) foi elaborado e 5 reprodutores foram indicados para a seleção. Entretanto, por falta de interesse dos produtores, nenhum dos animais indicados para a reprodução foram utilizados, sendo estes, vendidos para o abate. Desta forma, para o início de um programa de melhoramento genético de ovinos na região, será necessário a formação de um rebanho com mérito genético superior, adequado ao sistema de manejo adotado na região e ao mercado consumidor, através de produtores interessados em selecionar seus animais ou então pela faculdade, se responsabilizando pelo fornecimento de material genético para a região. Para a realização do segundo objetivo, os dados avaliados foram coletados entre os anos de 2007 e 2009, oriundos de uma propriedade localizada no Estado de São Paulo, participante do programa de melhoramento Ovigol, desenvolvido pela empresa Aries Reprodução e Melhoramento Genético Ovino – Ltda em parceria com a empresa AbacusBio Limited da Nova Zelândia. As estimativas dos componentes de (co)variâncias e dos parâmetros genéticos foram obtidos pelo software REMLF90, que usou...<br>The objectives of this study were to design and implement a program of genetic improvement of sheep in western São Paulo state and estimate genetic parameters for growth traits and carcass in Suffolk sheep in order to trace selection strategies for genetic improvement programs. The data analyzed to achieve the first objective, we collected evidence of weight gain took place in 2009, and the animals from 11 properties near the Dracena.These characteristics were adjusted weight at 150 days of age (P150) and average daily weight gain (ADG). To aid the classification of lambs an index of evidence of weight gain (IPGP) was developed and five players were nominated for selection. However, due to lack of interest of producers, none of the animals listed were used for reproduction, the latter being sold for slaughter.Thus, for the beginning of a breeding program for sheep in the region will require the formation of a herd with superior genetic merit, appropriate to the management system adopted in the region and to the consumer market by producers interested in selecting their animals or for college, taking responsibility for providing genetic material for the region. To achieve the second objective, the data evaluated were collected between 2007 and 2009, coming from a property located in the State of São Paulo, participant Ovigol improvement program, developed by Aries Reproduction and Breeding Sheep - Limited in AbacusBio partnership with New Zealand Limited. Estimates of (co) variances and genetic parameters were obtained by REMLF90 software, which used the restricted maximum likelihood method under multi-trait animal model. The predicted heritability for BW, GPPré, PD, GPPós, AOL and EGS were 0.06, 0.48, 0.45, 0.16, 0.10 and 0.07, respectively. Genetic correlations between weight traits ranged from -0.67 to 0.98... (Complete abstract click electronic access below)
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Sherman, Heidi M. "Hydrogeochemical controls on uranium in aquifers of the Jacobsville Sandstone /." "Available online. Click here.", 2004. http://sunshine.lib.mtu.edu/ETD/DISS/shermanh/Sherman/Sherman.pdf.
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Lloyd, Sheree. "What 'sparks' innovation in rural health settings: A case study." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/134390/1/Sheree%20Lloyd%20Thesis.pdf.
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Rural health settings face challenges in delivering and sustaining health services for their communities. Performance in rural health settings can be constrained by resources, staffing and the tyranny of distance from major centres. This research set out to determine how innovation might contribute to solutions and used a case study methodology to understand the organisational and contextual factors that support innovation in rural health settings. Further, the research examined how publicly available health data can be used to describe performance in rural health services through visualisation and the assembly of measures reflecting access, equity, quality, safety, sustainability and employee engagement.
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Slagel, Joseph Tanner. "The Sherman Morrison Iteration." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/52966.
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The Sherman Morrison iteration method is developed to solve regularized least squares problems. Notions of pivoting and splitting are deliberated on to make the method more robust. The Sherman Morrison iteration method is shown to be effective when dealing with an extremely underdetermined least squares problem. The performance of the Sherman Morrison iteration is compared to classic direct methods, as well as iterative methods, in a number of experiments. Specific Matlab implementation of the Sherman Morrison iteration is discussed, with Matlab codes for the method available in the appendix.<br>Master of Science
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Amorim, Graciele. "A identidade de Sherman." Florianópolis, SC, 2009. http://repositorio.ufsc.br/xmlui/handle/123456789/93156.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-graduação em Matemática e Computação Científica<br>Made available in DSpace on 2012-10-24T17:26:52Z (GMT). No. of bitstreams: 1
264144.pdf: 489637 bytes, checksum: 8c0af27f0aa3c157bf281eec26ac4b59 (MD5)<br>Neste trabalho investigam-se os aspectos combinatoriais e algébricos da identidade de Sherman no caso genérico. Obtêm-se fórmulas para o cálculo do número de classes de equivalência de caminhos fechados não periódicos sobre o grafo onde a identidade está definida e, com base nelas, uma nova prova da identidade _e obtida. Ademais, as possíveis relações da identidade com as _álgebras de Lie são elucidadas. Neste contexto, prova-se que a identidade de Sherman é uma conseqüência da identidade de Witt generalizada de uma álgebra de Lie.
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Garrido, Marín Eduardo. "Altitud y riesgo neurológico: alpinistas europeos versus sherpas del Himalaya." Doctoral thesis, Universitat de Barcelona, 1997. http://hdl.handle.net/10803/1116.
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La exposición humana a grandes altitudes puede provocar diversos grados de deterioro funcional y orgánico, presentando el sistema nervioso una gran sensibilidad frente a cambios en la presión parcial de oxígeno.<br/><br/>Mediante una historia clínica especialmente confeccionada, exploración física neurológica y resonancia magnética (RMI) craneal se estudió a varios grupos de alpinistas de élite que hubieran escalado por encima de los 7.000 m. de altitud en utilizar equipos de oxígeno en una ocasión como mínimo. Éstos fueron comparados (en diferentes fases de estudio) contra ellos mismos, con un grupo de nativos del Himalaya de la etnia Sherpa que poseían un historial excepcional en cuanto al número de ascensos a montañas mayores de 8.000 m. y con un grupo control que nunca había sobrepasado los 2.500 m. de altitud.<br/><br/>Mientras todas las exploraciones físicas fueran normales, prácticamente todos los alpinistas presentaron clínica de orden neuropsicológico a gran altitud y el 44-58% también tras las expediciones, mostrando el 46-61% alteraciones RMI cerebrales (atrofia cortical y/o leucoaralosis preferentemente posteriores). En ningún sujeto del grupo control se detectó cambios RMI y tan sólo el 14% de Sherpas presentó clínica neurológica y cambios RMI similares. <br/><br/>Las diferencias respeto a la aparición de alteraciones RMI cerebrales fueron altamente significativas entre haber o no sido expuesto a grandes altitudes, así como entre ser nativo del Himalaya o de nivel del mar. No hubo correlación estadísticamente significativa entre las imágenes RMI patológicas y la edad, la sintomatología, el número de ascensiones superiores a 7.000 y 8.000 m., el tiempo de exposición a gran o extrema altitud y la máxima cota alcanzada. No obstante, parece haber una relación entre la tolerancia a la altitud extrema y a la aparición de alteraciones RMI, entre el tiempo transcurrido desde la última escalada superior a 8.000 m. y la presentación de atrofia cortical, entre el sexo femenino y la menor frecuencia de RMI alteradas. <br/><br/>Ascender a grandes alturas, no necesariamente extremas, provoca la aparición de sintomatología neuropsicológica y alteraciones en la imagen de la estructura cerebral en un elevado porcentaje de humanos de nivel de mar pero no en los nativos del Himalaya estudiados. Esta supuesta protección étnica frente a la hipoxia ambiental puede justificarse por la existencia de peculiares adaptaciones, especialmente del metabolismo aeróbico, derivadas de una permanencia crónica bajo presiones barométricas notablemente reducidas. Los hallazgos detectados por RMI sugieren la presencia de lesión degenerativa, no obstante, permanece desconocido su predominio cerebral posterior, así como su evolución e implicación clínica a largo plazo.<br><i>Exposure to high-altitude may induce functional and organic disturbances in humans. Central nervous system showing the highest sensibility to changes in oxygen pressure. <br/><br/>Three groups of elite European mountaineers, who ascended over 7000 m. without oxygen supplement, were studied by magnetic resonance (MRI) of the brain and evaluated by a complete clinical history and neurological testing. These groups were compared with themselves before and after a single climb, with an outstanding group of Himalayan Sherpa climbers and with a healthly control group which had never been exposed to above 2500 m. <br/><br/>While almost all of European climbers suffered neuropsychological symptoms during high-altitude exposure, 44-58% during post-expeditions and 46-61% showed MRBI brain abnormalities (cortical atrophy and/or leuko-araiosis), only 14% of highlanders showed MRI brain changes. <br/><br/>In a high percentage of lowlanders, ascend to extreme altitude may produce neurological disorders and structural brain abnormalities, when after only one exposure to a hypoxic environment. The severity of this impact appears to be much smaller in Himalayan natives who may have a cerebral protection associated with special adaptations to chronic hypoxia. The type of MRI changes observed in these sportsmen suggest a degenerative brain damage, although its evolution and long-term clinical repercussion remain unknown, and deserves further investigation.</i>
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Chirivì, Giulia [Verfasser], Sherry [Akademischer Betreuer] Suyu, Eiichiro [Gutachter] Komatsu, and Sherry [Gutachter] Suyu. "Gravitational Lensing in 3D / Giulia Chirivì ; Gutachter: Eiichiro Komatsu, Sherry Suyu ; Betreuer: Sherry Suyu." München : Universitätsbibliothek der TU München, 2020. http://d-nb.info/123006107X/34.
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Urquidi, Nicole Lauren. "Cindy Sherman| Portraits in question." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527024.
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<p> Since her <i>Untitled Film Stills</i> of the 1980s, Cindy Sherman has assumed the roles of artist and model to present a continuum of complex female personas that are embedded within our cultural unconscious. Though we are often reminded that her photographs are not self-portraits, Sherman continues to employ many stylistic conventions of portrait photography. I use this as a means to re-contextualize Sherman's practice within a critical study of portrait photography that will open up new possibilities in reading her work. Using the photographic index, Charles Sanders Peirce's classification of signs, Charcot's nineteenth century photographs of hysterics, and Jacques Lacan's four discourses, I locate Sherman's practice within a complex history of photographic portraiture from the nineteenth century to today's digital landscape to ask where portraiture has been and where it is headed. </p>
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Corke, M. J. "The welfare of sheep with sheep scab (Psoroptes ovis infestation)." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598003.
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The effects of sheep scab, (<I>Psoroptes ovis</I> infestation) on the welfare of sheep were studied. Flocks of sheep naturally infested with sheep scab and flocks of uninfested sheep, were studied before and after treatment with acaricides. A group of sheep, experimentally infested with <I>Psoroptes ovis</I> mites, were studied throughout the infestation. Behaviour was studied using focal and scan sampling techniques. Sheep scab resulted in increases in rubbing, scratching and biting. Rubbing and scratching in infested sheep were sometimes accompanied by non-functional mouthing, considered to be a stereotypy. Times spent grazing, cudding and idling were not affected by sheep scab, but the bout lengths of grazing and idling were reduced. The experimental group showed an increasing neutrophilia through the infestation, with erratic increases in eosinophil count and fibrinogen, while haemoglobin concentration and haematocrit decreased. Naturally infested flocks showed lymphopenia after treatment. Serum globulin concentrations increased through the infestation, with a concurrent decline in serum albumin. The serum globulin started to decline within one month after treatment. Some lactate dehydrogenase isoenyzme fractions increased during the infestation. Prolactin decreased and β- endorphin increased throughout the experimental infestation, although seasonal factors may have influenced these results. There was no change in pressure nociceptor threshold due to sheep scab. A questionnaire survey of sheep farmers suggested that sheep scab in Britain had increased in incidence and distribution over the last decade. The welfare of sheep infected with sheep scab and the control of sheep scab are discussed in the context of the experimental findings.
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Glendinning, Laura. "Sheep lung microbiota." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/29541.
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Until recently it was assumed that the healthy mammalian lung did not harbour a microbiota, unlike other body sites. However, through the use of sequencing based technologies this has been shown to not be the case. Low biomass communities of microbes can be identified in the healthy lung and the lung microbiota in various diseases states has been shown to differ form these 'healthy' communities. The sheep respiratory microbiota is of interest from both an animal health perspective and due to the potential use of the sheep as a large animal model for studying the lung microbiota. In this thesis I seek to characterise the composition and variability of the sheep lung microbiota; the differences between the sheep upper and lower respiratory tract bacterial communities and to assess whether exhaled breath condensate collection can be used as a non-invasive lung microbiota sampling method. To study the bacterial communities present in samples I have used 16S rRNA gene sequencing and analysis. In Chapter 3 I examine the inter-individual and spatial variability present within the sheep lung microbiota. Protected specimen brushings were collected from three lung segments in six animals at three time-points. In a separate sheep a greater number of brushings was taken (n=16) in order to examine the amount of variability over a smaller spatial scale. I find that there can be large differences between the bacterial communities isolated from different locations within the lung, even over short distances. Samples also cluster by the sheep from which they were taken, indicating a host specific influence on the lung microbiota. In Chapter 4 I compare whole lung washes and oropharyngeal swabs from 40 lambs in order to examine the differences between the upper and lower respiratory tract microbiotas. I find that oropharyngeal swabs separate into rumen-like or upper respiratory tract-like bacterial communities. Despite the fact that in humans the upper and lower respiratory microbiotas have been shown to have similar compositions, the sheep lung microbiota samples in this study do not resemble either oropharyngeal samples or reagent only controls. In my first two results chapters, lung sampling methods were used which involved either anaesthesia combined with a bronchoscopic procedure (Chapter 3) or samples being taken from dead animals (Chapter 4). In Chapter 5 I assess whether there is a less invasive way of taking lung microbiota samples from a living individual, both to minimise the procedural stress on animals used as models and to increase the pool of potential volunteers for human lung microbiota studies. I compared samples taken via protected specimen brushings to samples taken via exhaled breath condensate collection, a less invasive sampling technique. I find that condensate samples contain less bacterial DNA and different bacteria than brushing samples, indicating that it is unlikely they could be used as a replacement for invasive sampling methods. In my final results chapter I compare the results across Chapters 3, 4 and 5 to identify bacteria which occur consistently in the sheep lung and could therefore potentially be described as core lung microbiota members. In conclusion, while I have found that there are large differences between the sheep lung microbiota and that which has previously been described in humans, the sheep can still be of use as a model in studies where these differences would not have a significant impact, such as in Chapter 5 of this thesis. I have identified several bacterial members of the core sheep lung microbiota which in future it would be interesting to better characterise and to assess whether they play a role in sheep health.
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Abdulkhaliq, Ahed. "Estimation of phenotypic and genetic parameters for some reproductive traits in Columbia, Suffolk and Targhee sheep breeds." Connect to resource, 1986. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1244132589.
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Gilbert-Kawai, E. T. "Microcirculatory blood flow in hypoxia : a comparative study between Sherpas and Lowlanders." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1473428/.
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Sherpas are the direct descendants of nomadic Tibetans, a population known to have resided at altitude for well over 500 generations. As such, it is plausible that their genome has adapted, through natural selection, to cope with the surrounding hypobaric hypoxic environment. The resultant phenotypic changes, which could account for their anecdotal extraordinary hypoxic tolerance, remain poorly described. By comparing Sherpas and an altitude-naïve population - ‘Lowlanders’- this thesis attempts to investigate whether improved microcirculatory flow is a physiological mechanism utilised by indigenous high altitude native populations to aid successful adaptation (and thus tolerance) to hypoxia. Five studies were undertaken to assess the effects of acute, subacute, and sustained hypoxia on the microcirculation. In a normobaric hypoxic chamber study, Sherpas were seen to maintain significantly greater finger microcirculatory blood flow upon acute hypoxic exposure, as compared to Lowlanders. On ascent to Mount Everest Base Camp, Sherpas demonstrated greater resting sublingual, peripheral (finger) and forearm blood flow, in addition to increased sublingual capillary density. Lastly, when Lowlanders were exposed to sustained hypobaric hypoxia, their microcirculatory vessel density increased to levels indistinct from Sherpa values; however their microvascular blood flow remained significantly lower. The results from this thesis thus support the hypothesis that at the microcirculatory level, phenotypic differences exist between an indigenous high- altitude population and an altitude-naïve population. Accordingly, the findings sustain the notion that augmentation of oxygen delivery at the level of the microcirculation may be one physiological mechanism, sanctioned through evolutionary selection pressure, to aid successful adaptation to hypoxia.
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Regnault, Timothy Robert Hume. "Orchestrated partitioning of maternal nutrients during ovine pregnancy /." View thesis View thesis, 1997. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030513.111110/index.html.
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Thesis (Ph. D. of Philosophy)--University of Western Sydney, Hawkesbury, 1997.<br>"A thesis submitted to the School of Agriculture and Rural Development, Faculty of Agriculture and Horticulture, University of Western Sydney Hawkesbury, in part fulfilment of the requirements for the Degree of Doctor of Philosophy." Includes bibliographical references (p. 236-267).
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Anger, Philipp. "Probing Electroweak Gauge Boson Scattering with the ATLAS Detector at the Large Hadron Collider." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-151612.
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Electroweak gauge bosons as central components of the Standard Model of particle physics are well understood theoretically and have been studied with high precision at past and present collider experiments. The electroweak theory predicts the existence of a scattering process of these particles consisting of contributions from triple and quartic bosonic couplings as well as Higgs boson mediated interactions. These contributions are not separable in a gauge invariant way and are only unitarized in the case of a Higgs boson as it is described by the Standard Model. The process is tied to the electroweak symmetry breaking which introduces the longitudinal modes for the massive electroweak gauge bosons. A study of this interaction is also a direct verification of the local gauge symmetry as one of the fundamental axioms of the Standard Model. With the start of the Large Hadron Collider and after collecting proton-proton collision data with an integrated luminosity of 20.3/fb at a center-of-mass energy of 8 TeV with the ATLAS detector, first-ever evidence for this process could be achieved in the context of this work.
A study of leptonically decaying WWjj, same-electric-charge diboson production in association with two jets resulted in an observation of the electroweak WWjj production with same electric charge of the W bosons, inseparably comprising WW->WW electroweak gauge boson scattering contributions, with a significance of 3.6 standard deviations. The measured production cross section is in agreement with the Standard Model prediction.
In the course of a study for leptonically decaying WZ productions, methods for background estimation, the extraction of systematic uncertainties and cross section measurements were developed. They were extended and applied to the WZjj final state whereof the purely electroweakly mediated contribution is intrinsically tied to the scattering of all Standard Model electroweak gauge bosons: Wγ->WZ and WZ->WZ. Three charged leptons and a neutrino from the decay of the final state bosons allow inferences about the scattering process. A distinct signature is provided by the two accompanying tagging jets as remnants of the incoming quarks radiating the initial electroweak gauge bosons. The cross section of the electroweak WZjj production was measured to σ(fiducial, observed) = (0.63 +0.32 -0.28 (stat.) +0.41 -0.24 (syst.)) fb and was found to be consistent with the Standard Model prediction at next-to-leading order in perturbative quantum chromodynamics, σ(fiducial, theory) = (0.31 +0.03 -0.05) fb. Unfolded differential cross sections of kinematic variables sensitive to models of new physics were derived. Anomalous quartic electroweak gauge couplings are introduced as dimensionless coupling parameters of additional operators within an effective field theory approach. Constraints on the parameters of operators with dimension eight were set employing a unitarization prescription based on form factors.
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Binchy, Alice. "The status and functions of Shelta." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358426.
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Alink, Frances. "Maternal and peri-ovulatory nutritional effects on the expression of the Inverdale (FecX1) fecundity gene in texel X Scottish hillbreed sheep." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25795.
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Paquet, Pierre-Alexandre. "Vivre l'Éverest : La coproduction des corps, du paysage et de l'espace propre au Khumbu népalais." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28608/28608.pdf.
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Ce mémoire porte sur la production des corps, du paysage et de l’espace dans le Khumbu népalais, région mieux connue par les touristes nombreux qui s’y rendent sous le nom de région de l’Everest et où les Sherpas ont établi leur résidence depuis près de cinq siècles. L’analyse qui étaye cette étude puise conceptuellement dans le champ de l’anthropologie de l’environnement.
Si d’un coté le paysage du Khumbu témoigne de la riche texture des pratiques traditionnelles des Sherpas, d’un autre côté le développement actuel des moyens touristiques au nom du dyptique de la conservation et du développement multiplie les agents responsables de sa production et agrège le Khumbu dans un espace balayé par le capitalisme. Ce mémoire témoigne des effets de la respatialisation du Khumbu sur la vie de ses habitants et sur leur environnement. La gestion des ressources et la propriété du sol sont des thèmes centraux à l’argumentaire.<br>This thesis scrutinizes the production of body, landscape, and space in the Khumbu region of Nepal, better known internationally as the Everest region, where the Sherpas people have established themselves for nearly five centuries. The analysis underpinning this study draws its concepts from the field of the anthropology of the environment.
If on the one hand the Khumbu landscape mirrors the rich texture of traditional Sherpa practices, on the other hand the current development of touristic means of production and the engagement of both conservation and development initiatives multiply the total numbers of social agents accountable for its production and aggregate the Khumbu in a space swept by the capitalist mode of production. This thesis demonstrates the impacts of the respatialisation of the Khumbu on the lives of its inhabitants and on their environment. Moreover, natural resource management practices and land ownership count among the central themes in the arguments.
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Stockman, Catherine Ann. "The physiological and behavioural responses of sheep exposed to heat load within intensive sheep industries." Thesis, Stockman, Catherine Ann (2006) The physiological and behavioural responses of sheep exposed to heat load within intensive sheep industries. PhD thesis, Murdoch University, 2006. https://researchrepository.murdoch.edu.au/id/eprint/437/.
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The live export and feedlotting industries are the major intensive sheep industries in Australia. During live shipment, sheep are exposed to prolonged periods of high heat and humidity, with little relief for several days, while environmental conditions in a Western Australian sheep feedlot have not yet been assessed. The research described in this thesis was conducted to determine the physiological responses of sheep to conditions within the live export and feedlotting industries, with particular focus on that of heat stress.
Merino wethers and Awassi rams developed significant change in physiological variables when exposed to prolonged periods of high heat and humidity, such as during long haul, live export voyages to the Northern Hemisphere. Physiological changes such as increased core temperature, respiratory rate, panting score and associated changes in blood gas variables were apparent in Merino wethers. However, Awassi rams showed exceptional ability to maintain homeostasis under the same environmental conditions, with no significant changes in core temperature and only slight alteration in blood gas variables. Results from this study indicated that electrolyte supplementation of sheep during live export would not be warranted because plasma electrolytes did not drastically change and blood gas variables quickly returned to normal following the heat.
Further studies developed methods to determine the critical wet bulb temperature, otherwise known as the heat stress threshold (HST) of Merino rams, ram lambs and wethers exposed to live export conditions. These studies found that ram lambs had a lower HST than both adult rams and wethers. However, both adult rams and wethers had a similar HST. Heat stress thresholds determined from these studies have been used in a model to predict high risk shipments for particular classes of sheep (Stacey 2003).
This thesis also details the environmental conditions within a Western Australian summer feedlot and the physiological responses of cross bred ewes and wethers to these conditions when fed feedlot rations. This study found that temperatures in a typical Western Australian feedlot in summer increased above 40 degrees C with low humidity; however, temperatures generally decreased to be within the sheep's thermoneutral zone at night. Both ewes and wethers had significantly increased core temperatures in response to these conditions, with sheep spending significantly more time in the shade than in the sun during the day. Both ewes and wethers had increased respiratory rates and panting scores during an intensive climate room experiment with similar environmental conditions. However, feed intake did not decrease even when climate room temperatures increased at night and humidity levels were higher than that found in typical feedlot conditions in Western Australia.
Work completed within this thesis has led to a greater understanding of the physiological responses of sheep to prolonged and continuous high heat such as during live export and to conditions of a typical Western Australian summer feedlot. This research has set a foundation for further study of management of sheep during live export and feedlotting.
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Stockman, Catherine Ann. "The physiological and behavioural responses of sheep exposed to heat load within intensive sheep industries." Stockman, Catherine Ann (2006) The physiological and behavioural responses of sheep exposed to heat load within intensive sheep industries. PhD thesis, Murdoch University, 2006. http://researchrepository.murdoch.edu.au/437/.
Full textAbstract:
The live export and feedlotting industries are the major intensive sheep industries in Australia. During live shipment, sheep are exposed to prolonged periods of high heat and humidity, with little relief for several days, while environmental conditions in a Western Australian sheep feedlot have not yet been assessed. The research described in this thesis was conducted to determine the physiological responses of sheep to conditions within the live export and feedlotting industries, with particular focus on that of heat stress.
Merino wethers and Awassi rams developed significant change in physiological variables when exposed to prolonged periods of high heat and humidity, such as during long haul, live export voyages to the Northern Hemisphere. Physiological changes such as increased core temperature, respiratory rate, panting score and associated changes in blood gas variables were apparent in Merino wethers. However, Awassi rams showed exceptional ability to maintain homeostasis under the same environmental conditions, with no significant changes in core temperature and only slight alteration in blood gas variables. Results from this study indicated that electrolyte supplementation of sheep during live export would not be warranted because plasma electrolytes did not drastically change and blood gas variables quickly returned to normal following the heat.
Further studies developed methods to determine the critical wet bulb temperature, otherwise known as the heat stress threshold (HST) of Merino rams, ram lambs and wethers exposed to live export conditions. These studies found that ram lambs had a lower HST than both adult rams and wethers. However, both adult rams and wethers had a similar HST. Heat stress thresholds determined from these studies have been used in a model to predict high risk shipments for particular classes of sheep (Stacey 2003).
This thesis also details the environmental conditions within a Western Australian summer feedlot and the physiological responses of cross bred ewes and wethers to these conditions when fed feedlot rations. This study found that temperatures in a typical Western Australian feedlot in summer increased above 40 degrees C with low humidity; however, temperatures generally decreased to be within the sheep's thermoneutral zone at night. Both ewes and wethers had significantly increased core temperatures in response to these conditions, with sheep spending significantly more time in the shade than in the sun during the day. Both ewes and wethers had increased respiratory rates and panting scores during an intensive climate room experiment with similar environmental conditions. However, feed intake did not decrease even when climate room temperatures increased at night and humidity levels were higher than that found in typical feedlot conditions in Western Australia.
Work completed within this thesis has led to a greater understanding of the physiological responses of sheep to prolonged and continuous high heat such as during live export and to conditions of a typical Western Australian summer feedlot. This research has set a foundation for further study of management of sheep during live export and feedlotting.
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Hou, Xian Zhi. "Diet selection in sheep." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/28250.
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Ezaz, Zere. "Studies in Menz sheep." Thesis, Bangor University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.276196.
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Mason, Sam. "Toxoplasma gondii in sheep." Thesis, University of Leeds, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.556024.
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Toxoplasma gondii infects sheep horizontally (from cat faeces) or vertically (transplacentally). Vertically infected lambs sometimes die. Here, transmission and performance impacts were considered in one Charollais flock and one Swaledale flock. B1-PCR was performed on umbilical cord, heart and brain. MAT was performed on blood and pleural effusion. IgG-ELISA was performed on colostrum. B1-PCR was more sensitive than four other methods, producing a band in 50% of replicates when each replicate contained 0.02 parasite genome copies. 16/243 (6.6%) viable Charollais, 30/263 (11.4%) viable Swaledale, 3/54 non-viable Charollais and 0116 non-viable Swaledale were PCR-positive, showing no difference between flocks. At age four months 64/524 (12.2%) Charollais and 10/329 (3.0%) Swaledale were seropositive, showing relatively high seroprevalence in Charollais. 5/44 non-viable Charollais and 1114 non-viable Swaledale were seropositive. Colostrum ELISA was 75% sensitive and 100% specific relative to serum MAT. 15/408 (3.7%) Charollais and 31139 (2.2%) Swaledale were colostrum ELISA-positive, showing no difference between flocks. PCR positivity was not associated with seropositivity. PCR positivity was randomly dispersed between litters. In Charollais seropositivity was overdispersed between litters, seroprevalence was higher than PCR prevalence, young ewes' lambs were frequently PCR-positive and large litters frequently contained seropositive lambs. Those results might have been due to vertical transmission. In Swaledale, PCR positivity was not associated with ewe age and seropositivity was rare. Those results suggested little transmission. Lamb seroconversion, and colostrum ELISA positivity, were not associated with ewe age. Overall, it is suggested that ewes ingested oocysts but vertical transmission was sometimes interupted by lambing, especially in Swaledale. In eight cases clinical toxoplasmosis was suspected. No evidence was found suggesting subclinical effects of T. gondii leading to reduced lamb survival. Charollais born PCR-positive were relatively light at age two months but that association was not found in Swaledale. Serology did not confirm any stunting effect.