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Akhoudas, Camille. "Un nouveau regard sur la dynamique de l’océan Austral et ses interactions avec la cryosphère révélé par une approche isotopique". Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS464.
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L’océan Austral est un acteur central de la circulation océanique mondiale et du système climatique terrestre. Malgré l’essor des observations in situ dans cette région reculée du globe depuis les années 1990 (avec notamment le début de « l’ère satellitaire » et des grands programmes internationaux d’observations tel que WOCE, CLIVAR, GO-SHIP, ou ARGO), ce vaste océan reste encore aujourd’hui largement méconnu. Il est pourtant nécessaire de parvenir à mieux observer et comprendre les mécanismes de sa dynamique océanique ainsi que sa variabilité afin de prédire au mieux l’évolution future du système climatique. Notamment, une des particularités qui rend l’océan Austral essentiel dans le système climatique est qu’il est l’un des principaux lieux de ventilation de l’océan profond, qui permet une redistribution et un stockage de chaleur, d’eau douce, de carbone, d’oxygène, et de nutriments, entre autres. Cette ventilation est en partie dirigée par une circulation verticale unique connectant la surface aux abysses océaniques, mise en mouvement par les intenses interactions et échanges de flux d’énergie et de flottabilité entre atmosphère, océan et cryosphère. Je me penche dans cette thèse sur certains aspects de la dynamique australe en m’efforçant d’apporter une vue mécanistique de la circulation grande échelle et des changements en cours. Un fil rouge méthodologique que j’emploie sur l’ensemble de cette thèse est l’utilisation d’observations des isotopes stables de l’eau, traceur passif utilisé couramment dans un grand nombre de disciplines des sciences de la terre, mais jusque récemment assez peu en océanographie physique. La mesure des isotopes de l’eau constitue un outil, qui en tant que traceurs de l’origine de l’eau, permet de mieux caractériser les différentes composantes du cycle hydrologique ainsi que son évolution. En particulier, la composition isotopique de l’eau de mer représente une empreinte importante des masses d’eau, contenant des informations sur les conditions de leur formation et leur évolution. Dans cette thèse, au-delà du travail méthodologique important sur le terrain et en laboratoire pour l’échantillonnage, l’analyse et la calibration des mesures isotopiques, j’utilise les isotopes de l’eau en combinaison avec d’autres traceurs plus conventionnels pour aborder avec un nouveau regard, les questions du rôle des interactions entre océan et calotte polaire à la circulation grande échelle, de la signature des eaux de surface dans les abysses, ou encore de l’impact des changements de régimes atmosphériques ou de fonte de la cryosphère sur l’océan de surface. Au-delà de la seule utilisation des isotopes stables de l’eau, les approches que j’ai mises en place m’ont permis de documenter la quantité de fonte et de regel d’une des plus grandes cavités glaciaires au monde, qui influence les caractéristiques des masses d’eau denses, précurseurs des eaux abyssales se formant en mer de Weddell. Mes résultats mettent également à jour la proportion que représente, in fine, ces eaux denses dans la production des eaux abyssales dans le secteur Atlantique de l’océan Austral. Je détaille les processus qui mènent à la formation des eaux abyssales et avec cette nouvelle force, je montre que des estimations passées de la production d’eaux abyssales en apparente contradiction, s’attaquaient en réalité à différents processus. Finalement, je quantifie les changements des apports en eau douce lors des trois dernières décennies sur les tendances des propriétés de surface dans le secteur Indien de l’océan Austral. Mes résultats démontrent que des changements dans le régime des précipitations expliquent les changements des caractéristiques de l’océan surface affectant la stratification avec des conséquences sur la formation des masses d’eau et la circulation de retournement de l’océan Austral à grande échelleThe Southern Ocean is a key component in global ocean circulation and the Earth's climate system. Despite the increase of in situ observations in this remote region since the 1990s (notably with the « satellite era » and major international observation programs such as WOCE, CLIVAR, GO-SHIP, or ARGO), this immense ocean remains largely unknown. However, it is essential to observe and understand the mechanisms of its dynamics as well as its variability with the aim to predict the future evolution of the climate system. In particular, one important characteristic of the Southern Ocean is that it is one of the main sites of deep ocean ventilation, which allows redistribution and sequestration of heat, freshwater, carbon, oxygen, and nutrients. This ventilation process is mainly associated with a vertical circulation connecting the ocean surface to the abyss, fueled by intense interactions and exchanges of energy and buoyancy fluxes between atmosphere, ocean and cryosphere. In this thesis, I apprehend some aspects of the Southern Ocean dynamics by providing a mechanistic view of large-scale circulation and its ongoing changes. The approach I use throughout this thesis is based on observations of stable water isotopes, a passive tracer commonly used in a large number of earth science disciplines, but until recently only sparsely used in physical oceanography. Stable water isotopes constitute a robust tool which, as a tracer of the origin of water, help to better characterize the different components of the hydrological cycle as well as its evolution. In particular, the isotopic composition of seawater represents an important imprint of water masses, containing information on the conditions of their formation and their evolution. In this thesis, beyond the important methodological work at sea and in the laboratory for the sampling, analysis and calibration of isotopic measurements, I use the stable water isotopes in combination with other more conventional tracers to apprehend, with a new perspective, the questions of the role of interactions between the Southern Ocean and the Antarctic Ice Sheet in large-scale circulation, the signature of surface waters in the abyss, or even the impact of changes in atmospheric or cryosphere regimes on the surface ocean. Beyond the only use of stable water isotopes, original approaches have allowed me to document melting and refreezing of one of the largest ice shelves in the world, which influences the characteristics of the dense waters, precursors of abyssal waters produced in the Weddell Sea. My results also reveal the proportion of these dense waters in bottom water formation in the Atlantic sector of the Southern Ocean. We detail the processes that lead to the formation of bottom waters and with this new insight, we demonstrate that past estimates of bottom water production, in apparent contradiction, were actually focusing on different processes. Finally, I propose to quantify the changes in freshwater inputs over the past three decades that influence the trends in surface properties in the Indian sector of the Southern Ocean. The results demonstrate that changes in the precipitation regime explain changes in the surface ocean characteristics impacting stratification with consequences for large-scale water mass formation and overturning circulation in the Southern Ocean
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O'Neil, Lillian Pearl. "The peak of the abyss". Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/12453.
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This studio research examines processes of collecting, arrangement and collage. It looks into the relationship between memory and collecting to consider how we order and construct meaning. It investigates how when used as a medium collage can function to bring latent content to a conscious plane
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Wood, David L. "Health Care Transition: Bridge or Abyss?" Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etsu-works/5175.
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Prescott-Steed, David John. "The import of the sensation of the abyss". Connect to thesis, 2006. http://portal.ecu.edu.au/adt-public/adt-ECU2007.0020.html.
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Oscar, Sara. "Into this wild abyss learning through fabricated photographs /". Connect to full text, 2007. http://hdl.handle.net/2123/3965.
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Thesis (Ph. D.)--University of Sydney, 2007."Photomedia"--T.p. Title from title screen (viewed February 18, 2007) Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy (Visual Arts) to the Sydney College of the Arts. Includes bibliography. Also available in print form.
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Prescott-Steed, David J. "The import of the sensation of the abyss". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2006. https://ro.ecu.edu.au/theses/92.
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This research argues the significance of the concept of the abyss as a means to understanding key contemporary ideas such as the self, identity, reflexivity, indeterminacy, ideology, radical doubt, lack, and xenophobia. Proposing the analysis of interpretations of the abyss as informative in developing an understanding of ourselves in terms of our cultural, geographical and historical contexts, I draw on a range of visual images, explorations of language use, research into cultural constructs, religious practices and historical events. The reflections on the abyss contained in this thesis contribute to broader research by connecting the developing concept of the abyss to aspects of the material and cultural contexts of the historical periods examined. Self-reflexive creative production is the modus operandi for my critical engagement with the subject matter. The claim that research and creative practice inform one another dialogically is exemplified by a discussion of the role of research as a tool for contextualising my own visual art practice, as well as for acknowledging both my intellectual and my emotional negotiation of the theory.
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Filipe, Elisabete Magalhães. "Adaptação cultural do produto : o caso Abyss & Habidecor". Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/2788.
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Mestrado em Línguas e Relações EmpresariaisCom a mudança dos negócios nacionais para internacionais e globais, emergem novos desafios para os gestores envolvidos nestas actividades. A complexidade das tarefas envolvidas no marketing internacional requer uma abordagem que demonstre sensibilidade cultural. O processo de globalização não está a levar à homogeneização do comportamento do consumidor entre países. Pelo contrário, o comportamento do consumidor está a tornar-se mais heterogéneo devido às diferenças culturais. As estratégias de venda para um país não podem ser estendidas a outros países sem adaptação, adaptação do produto e/ou publicidade. Este fenómeno torna cada vez mais importante compreender os valores das diferentes culturas e o seu impacto no comportamento do consumidor. A presente dissertação centra-se nestas questões, explorando conceitos e princípios teóricos e realizando um estudo de caso sobre uma empresa portuguesa, a Abyss & Habidecor. Os resultados mostram que, neste caso, os consumidores de diferentes países têm necessidades e gostos diferentes, pois compram diferentes modelos, cores e medidas de tapetes e toalhas. Deste modo, pode afirmar-se que, de facto, não parece que a globalização esteja a levar à homogeneização do comportamento do consumidor. ABSTRACT: With the shift from national to international and global business, new challenges have emerged for managers engaged in these activities. The complexity of the tasks involved in international marketing requires an approach that demonstrates cultural sensitivity. The process of globalization is not leading to homogenization of consumer behavior across countries. Rather, it seems that consumer behavior will become more heterogeneous because of cultural differences. Retailing strategies for one country cannot be extended to other countries without adaptation. This phenomenon makes it increasingly important to understand values of different cultures and their impact on consumer behavior and the products acquired. This dissertation aims to shed light on these issues by exploring the theoretical and carrying out a case study with a Portugal-based company, Abyss & Habidecor. Our results show that, in this case, consumers across countries have different needs and tastes, since they are buying different models, colors and sizes of rugs and towels. Thus, we can say that, indeed, it does not seem that globalization is leading to homogenization of consumer behavior.
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Rosenberg, Melinda. "Antagonistic Allies: Bridging the Abyss Between Nietzsche and Democracy". [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000415.
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Floryshak, Barbara C. "Sustaining hope in the abyss through the world of story". Chicago, Ill : McCormick Theological Seminary, 1997. http://www.tren.com.
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Snow, Marcus. "Into the abyss : a study of the mise en abyme". Thesis, London Metropolitan University, 2016. http://repository.londonmet.ac.uk/1106/.
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As no single English study of the mise en abyme with its examples in our late-modern world has been undertaken, this thesis concerns the mise en abyme in English literature. In approximately the last third of the twentieth century, the concept has increasingly been associated with ‘postmodernism’ and the essential groundlessness of all claims to general or universal truth. In this thesis, I argue that the mise en abyme has become such a broad staple of character and narrative study that its meaning is diffuse in the extreme. First celebrated in the 1980s and 1990s, by several literary thinkers as a figure capturing the spirit of postmodernism, the eventual symptomatic dissipation of the mise en abyme in literary studies resulted from critical suggestions that the mise en abyme was after all, perhaps, bogus. It subsequently became associated with aesthetic phenomena far beyond its initial characterisation by André Gide in 1893. I argue that it has now become a trope of things wider than Gide’s initial allusion and has become a metaphor for abyssal - and abysmal - things. This thesis seeks to consider the history of the mise en abyme and to offer a contemporary account of what it might mean: it does this by uncovering the latent rhetorical figures which preceded the name ‘mise en abyme’. Formal readings of the play within the play in Hamlet and the gothic story read in The Fall of the House of Usher are both starting points to relink Gide’s idea to its, more common, metaphorical applications. Thus, metaphors of the abyss, the dark, the occulted, the uncanny and, most precisely, the ‘sinister’ are examined in this dissertation. The thesis first evaluates the theoretical inheritance of Gide’s work and then, in the second part, applies, through close reading, the meaning of Gide’s idea to recent, and representative literary examples. The thrust of the argument is that the reason many definitions, and applications, of the mise en abyme are such a source of problems, is because the mise en abyme, as an English literary phenomenon supporting the broad thesis of postmodern Gothic aesthetics, is concerned with representing abyssal metaphors. A clear delimitation of the mise en abyme is difficult whenever connotations of the abyss, the dark, the occult and the sinister are overlooked. So, this dissertation gives a circumspect view of what is designated as mise en abyme, and argues that, in late-modernity, its meaning is closest to the rhetorical figures named ekphrasis, metalepsis, and epanalepsis. This study concludes that, realistically, there is probably no such thing as the mise en abyme and instead, there are only rhetorical figures and metaphors of the sinister and of the abyss.
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Black, Thierry. "Away from the Abyss: Borgesian Translation Reconsidered through Buddhist Philosophy". Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/26244.
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The English-language translations of Jorge Luis Borges’s Spanish-language works undertaken by the author and Norman Di Giovanni went above and beyond what is generally perceived as acceptable in traditional Western practices. Their work, together with Borges’s thoughts on translation itself, garnered criticism from within Western Translation Studies for its rejection of the status of the original text and the blurring of the distinction between author and translator.
Yet the pair’s actions and Borges’s views on translation cease to appear scandalous under the light of Buddhist philosophy, particularly through the use of the Buddhist principles that all phenomena are impermanent and interdependent. This thesis will seek to use these ideas to legitimize the actions of Borges and Di Giovanni.
To do so, it will trace the history of opposing and convergent theories from Western philosophy and describe our Buddhist concepts in detail. In order to better understand Borges, it will examine the array of philosophies that influenced the writer and how they both align themselves and differ from Buddhist ideas. This thesis will end by directly applying impermanence and interdependence to the translation practices of Borges and Di Giovanni and considering what potential effect legitimacy for such practices would have on translation overall.
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Latham, Jr G. Eric. "From Within the Abyss: Drug Users in Areas of Rural Poverty". TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1323.
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This research was completed to deal with many unanswered questions regarding drug use, specifically drug use in areas of rural poverty. Look at any "Faces of Meth" billboard or listen to any corporate-news program and one might assume there is a drug epidemic in rural areas. Without research, this allows the viewer to assume that poverty is the fault of the drug user who happens to live in rural places. This study sought to take a qualitative and ethnographic methodology to "embed" the researcher in this setting to see for himself whether these views were valid or invalid. The questions of functional drug use were at the forefront of the study, as was the possible relationship between drug use and rural poverty. This study transformed into a serious analysis of a network of drug users in the town of Mulch Valley. While standard sociological (and policy issues) concerns are dealt with, this thesis moves beyond such concerns. Theoretical concerns are brought into questions as new concepts, such as: cultural narrative of addiction, master sociality, slave sociality, and Derridity." "Crushing. Cheating. Changing. Am I deaf or dead? Is this constricting construction or just streets with rusty signs of something violent coming?" (Manson, 2012)
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Oswald, Rikus. "Constructing Africa(ns) in international relations theory: bridging a theoretical abyss". Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/4066.
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Thesis (MA (Political Science))--University of Stellenbosch, 2009.ENGLISH ABSTRACT: Africa(ns) are currently marginalised within the discipline of International Relations. This thesis explores the possibility that employing a constructivist approach could facilitate the inclusion of Africa as an object of study and Africans as potential agents of IR knowledge within the discipline by bridging a theoretical abyss. Two discourses, namely the rationalist and Africanist, are identified. They frame the sides of the theoretical abyss to which Africa(ns) have been marginalised within IR. These discourses adhere to the opposing analytical approaches which constitute the Third Debate, namely rationalism and reflectivism. This thesis proposes two theoretical reconstructions that can facilitate the bridging of this theoretical abyss. The theoretical reconstructions are explicated by employing different research stances. The researcher is situated within the intellectual space afforded by the boundaries of the discipline in order to propose the first reconstruction. The second theoretical reconstruction is proposed by problematising the boundaries the discipline of IR. This study found that constructivism facilitates the process of establishing the middle ground between rationalism and reflectivism and in so doing could include Africa as an object of study. It also found that the intervention of constructivism facilitated a necessary change in the culture of the discipline to create the possibility of extending the notion of engaged pluralism and re-imagining the discipline as a disciplinary community of difference. This leads to the opening up of the necessary dialogical space to include Africans as potential agents of IR knowledge. Constructivism is therefore the mutually constituting link between the two proposed theoretical reconstructions as they are made possible by its intervention in the discipline.
AFRIKAANSE OPSOMMING: Afrika(ne) word huidiglik gemarginaliseer binne die dissipline van Internasionale Betrekkinge. Hierdie tesis ondersoek die moontlikheid dat die gebruik van ‘n konstruktiwistiese benadering die insluiting van Afrika as ‘n onderwerp van studie of Afrikane as potensiële agente van IB kennis deur die oorbrugging van ‘n teoretiese kloof kan fasiliteer. Twee diskoerse, naamlik die rasionalistiese and die Afrikanistiese, word geïdentifiseer. Hierdie diskoerse stel die sye van die teoretiese kloof voor waarin Afrika(ne) gemarginaliseer word binne IB. Hulle hou verband met die twee opponerende analitiese benaderings van rasionalisme en reflektiwisme wat die Derde Debate uitmaak. Hierdie tesis stel twee teoretiese rekonstruksies voor wat die oorbrugging van die teoretiese kloof kan fasiliteer. Hierdie teoretiese rekonstruksies word ontvou deur verskillende navorsingsposisies in te neem. Die navorser plaas homself binne die intellektuele spasie wat deur die grense van die dissipline toegelaat word om sodoende die eerste rekonstruksie voor te stel. Die tweede rekonstruksie word voorgestel deur die problematisering van die grense van die dissipline. Hierdie studie het gevind dat konstruktiwisme die proses van die opstelling van ‘n middelgrond tussen rasionalisme en reflektiwisme fasiliteer en sodoende Afrika as ‘n onderwerp van studie kan insluit. Die studie het ook gevind dat die toetrede van konstruktiwisme die nodige verandering aan die kultuur van die dissipline veroorsaak het wat die moontlikheid skep dat die begrip van ‘engaged pluralism’ uitgebrei en die hervoorstelling van die dissipline as a dissiplinêre gemeenskap van diversiteit kan word. Hierdie hervoorstelling lei tot die skepping van die nodige dialogale spasie om Afrikane as potensiële agente van IB kennis in te sluit. Konstruktiwisme is dus die onderliggende skakel wat die twee voorgestelde teoretiese rekonstruksies moontlik maak deur die benadering se toetrede tot die dissipline.
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Hourigan, Daniel. "The Phantasmatic Subject of Technology: Slavoj Zizek, Techne, and the Abyss". Thesis, Griffith University, 2009. http://hdl.handle.net/10072/365491.
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This critique of technology takes up the thought of Slavoj Žižek to engage in a psychoanalytic and philosophical exploration, critique, and redemption of the human subject under the sway of post-modernity’s politic of technophilia. By first establishing the persistence of the subject as an aporia in the discourse of knowledge-production, this discussion unravels the philosophical, political, and psychoanalytic difficulties hidden by the fetishisation of technology and the globalised lie of its vulgar materialism that entraps the subject in a technological phantasia coordinated by the ‘metaphysics’ of technology: technicity. Interrogating this phantasia of technology, we will intervene in the overdetermination of the ontology of the subject by the perverse social order of a mystical deadlock between the ‘treatment’ of the subject’s existence by the perverse order of technical rationalisation through its annihilation and fabrication of the embodiment of the subject. This intervention aims to reveal the dark contingency at the core of the subject, and to develop this Cause as the site of a rupture and reordering of the symbolic universe maintained by the ideology of technological over-determination. This Cause will be shown through techne, the jettisoned ontological element of technology, and herein this demonstration will unveil the possibility for redeeming the subject from the overdetermination of the technological through the ideology-critique of the phantasia of knowledge-production that covers over the importance of ontology to the self-conception of the human subject. The moment of redemption will be shown to begin from the subject who emerges in and through the university discourse of knowledge-production that Žižek has criticised as the epochal mode of post-modernity.
In attending to this thesis the dissertation engages with Žižek’s critique against the tide of post-modern critique that paralyses the critical gaze of the subject, especially in the consideration of the critical role fantasy plays in maintaining the perverse psychosocial order of knowledge-production that leads to the structuring of the phantasmagoria of technicity. Here the critique with which this dissertation is engaged demonstrates that the fetishisation of knowledge maintaining the ‘lie’ of this phantasmagoria betrays its overdetermination of the subject through the vulgar materialism and the repressed metaphysical mania of annihilation and fabrication that allows technicity to substitute its raison d’étre for the Cause at the core of the subject. By attending to the return of the repressed techne alongside the subject who has been substituted by technicity and excluded from the Symbolic and exiled to the Abyss of the Real, this dissertation will propose the rupture and rearrangement of the authorial order maintained through technicity’s binary of annihilation and fabrication. And to this end the dissertation aims to show how the ontological emergence of the subject at the heart of the dialectical materialist tussle with philosophical idealism can serve to be given a voice in a techne phantasmagoria of open possibility that is not reduced to mere ‘virtuality’ by technicity’s spurious presentism and anti-metaphysical prejudice.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Arts
Faculty of Arts
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Fjellborg, Anders. "Energieffektiv ventilation". Thesis, Linköpings universitet, Energisystem, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-76910.
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Syftet med detta examensarbete är att konkretisera och visa på de grundläggande problemen med inomhusklimatet i Brogårdsfabriken i Vetlanda, för att utifrån detta komma fram med åtgärdsförslag för att minska dem. Detta samt att utreda möjligheterna att ta till vara den i fabriken internt genererade överskottsvärmen och minska energianvändningen. Arbetet har skett i ett top-down-perspektiv, vilket betyder att fabriken ses som ett slutet system där tillförd energi in i systemet ställs mot bortförd energi ut ur systemet. Stor del av arbetet har bedrivits i simuleringsprogrammet IDA – Indoor Climate and Energy till vilket data samlats in genom fysiska mätningar i fabriken och genom intern dokumentation på företaget. Problemen med inomhusklimatet för de anställda ute i produktionen är av olika karaktär i olika delar av fabriken och varierar även i intensitet beroende på vilken tid på året som studeras. Dock är de bakomliggande orsakerna till problemen alltid desamma. Det handlar bland annat om bristfällig processventilation, stora öppna lokaler som är svårkontrollerade, problem med infiltration genom portar och andra öppningar i klimatskalet. Förslag att återskapa en tidigare befintlig vägg rekommenderas för att lösa problemet med kalldrag i packhallen. Väggen skulle förhindra luftrörelser i områden där problemen upplevs och nästintill eliminera dem. Fokus på att minska energianvändningen har skett genom att titta på en optimering av ventilationsdriften vilket har resulterat i en kostnadsbesparing på cirka 370 tkr/år vid reducering av driften under enbart helger. Det finns ytterligare potential till kostnadsbesparingar för ventilationsdriften under andra tillfälliga driftstopp eller semesterstängningar av fabriken, om ventilationsdriften anpassas efter detta.
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Bengtsson, Patrik y Joel Blomfelt. "Variabel Ventilation". Thesis, KTH, Energiteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-190163.
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A lot of people today spend most of their lives indoors. Both at home and at work time is spent in areas where the climate is not governed by the weather but by ventilation systems meant to create a suitable indoor climate. Despite having such a central part in society the subject of ventilation seldom gets very much attention, and in the current situation it is not a foregone conclusion that indoor air quality and climate is satisfactory. Those who build the homes and premises normally explain this as a result of cost considerations, but essentially the situation originates from other issues. A more accurate explanation is that there are some problems concerning the planning stage of ventilation systems, which implies both a highly simplified designing approach and the price, not the function and quality, being decisive. The problems have been confirmed by several sources and research is in progress within the area in order to address the underlying issues. Among other things, various types of test-bed housing is constructed in several parts of the world, designed for measurement and data collection in a real living environment. Such projects can both verify different system´s function and promote the development of new innovations, but also help in creating well-justified research material regarding, among other things, different ventilation solutions such as for example variable ventilation. One of these projects, called KTH Live-in Lab, is located at KTH in Stockholm. This report presents a work regarding comparisons of different ventilation solutions for such a student apartment as constructed in the ongoing research project KTH Live-in Lab. The work focuses on both finding a suitable system and then link the results to an adequate combination for use with variable ventilation. In order to deal with today´s problems within the area, the work is focused on deviating from the current conventional approach and ventilation design. The result is illustrated digitally in the form of computer simulations of air flow in a virtual model of the apartment, and comparisons led both to a number of conclusions, and proposals of suitable and unconventional solutions. For non-variable ventilation systems, a suitable system consisted of one ventilation inlet placed at ceiling level and two outlets whereof one at ceiling level and one at floor level. For variable ventilation, the results showed that the system solution should suitably be combined with the ability to switch to an inlet at floor level at nights and other scenarios without activity and movement in the apartment. Other conclusions are mainly about findings regarding how certain design variations affect the characteristics of the ventilation system.Många människor spenderar idag större delen av sitt liv inomhus. Det är vanligt att man både hemma och på jobbet vistas i utrymmen där klimatet inte styrs av väder och vind utan av ventilationssystem som är tänkta att skapa ett lämpligt inomhusklimat. Trots ventilationens centrala del av samhället hamnar ämnet dock ofta i skymundan, och i dagens läge är det ingen självklarhet att inomhusklimaten och dess luftkvalité är tillfredställande. Av dem som bygger bostäderna och lokalerna förklaras detta ofta bero på kostnadsaspekter, men i grund och botten är det annat som ligger till grund för dagens situation. En bättre förklaring är att det finns viss problematik kring ventilationens planeringsskede, vilket innebär ett väldigt förenklat arbetssätt och att kostnad prioriteras framför funktion och kvalité. Problemen har bekräftats från flera håll och forskning pågår inom området i syfte att möta de bakomliggande orsakerna. Bland annat uppförs på flera håll i världen olika typer av testbädd-bostäder utformade för mätning och datainsamling i en verklig boendemiljö. Med hjälp av dessa kan man både verifiera olika systems funktion och gynna framtagning av nya innovationer och välgrundat forskningsmaterial gällande bland annat olika ventilationslösningar som exempelvis variabel ventilation. Ett av dessa projekt, med namnet KTH Live-in Lab, utförs på KTH i Stockholm. I denna rapport presenteras ett arbete gällande jämförelser av olika ventilationslösningar för en sådan studentlägenhet som uppförs i det pågående bygg- och forskningsprojektet KTH Live-in Lab. Arbetet fokuseras på att dels hitta en lämplig ventilationslösning och sedan även koppla resultatet till en möjlig kombination att använda för variabel ventilation. I syfte att möta dagens problematik fokuserades på att frångå dagens konventionella arbetssätt och ventilationsdesign. Resultatet illustreras digitalt i form av datorsimuleringar av luftflöden i en virtuell modell av bostaden, och jämförelserna ledde till ett antal slutsatser och förslag på lämpliga okonventionella lösningar. För icke-variabel ventilation var det lämpligt att placera ett inlopp i taknivå, samt två utlopp varav ett i taknivå och ett i golvnivå. För variabel ventilation visade det sig att denna systemlösning bör kombineras med möjlighet att växla inloppet till lågt inlopp på nätter och andra scenarion utan aktivitet och rörelse i bostaden. Övriga slutsatser gäller vilka egenskaper som bör varieras beroende på vad man vill uppnå med ventilationen.
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Hammash, Muna Hassan. "CARDIAC RHYTHM DURING MECHANICAL VENTILATION AND WEANING FROM VENTILATION". UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_diss/56.
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The transition from mechanical ventilation (MV) to spontaneous ventilation during weaning is associated with hemodynamic alterations and autonomic nervous system (ANS) alterations (reflected by heart rate variability [HRV]). Although cardiac dysrhythmias are an important manifestation of hemodynamic alterations, development of dysrhythmias during MV and weaning and subsequent impact on length of MV has received little attention.
The purposes of this dissertation were to 1) evaluate the relationship of heart rate variability (HRV) during weaning to the development of cardiac dysrhythmias and 2) determine the relationship of cardiac dysrhythmias to length of MV.
A convenience sample of 35 patients (66.7% men; mean age 53.3 years) who required MV was enrolled in this study. Continuous 3-lead electrocardiographic data were collected for 24 hours at baseline during MV and for the first 2 hours during the initial weaning trial. HRV was evaluated using spectral power analysis.
Twenty- seven patients out of 30 were exposed to a combination of pressure support (8-15 cm H2O) and continuous positive airway pressure 5 cm H2O during weaning trial. Three patients self- extubated and received supplemental oxygen through either a partial rebreathing or non-rebreathing mask. Low frequency (LF) power HRV decreased, while high frequency (HF) and very low frequency (VLF) power HRV did not change during weaning. Multiple regression analyses showed that LF and HF HRV were significant predictors of occurrence of ventricular and supraventricular ectopic beats during weaning, while VLF power predicted occurrence of ventricular ectopic beats only. The mean of occurrence of supraventricular ectopic beats per hour during weaning was double the mean at baseline, while the mean of ventricular ectopic beats per hour did not change. Mean number of supraventricular ectopic beats per hour during weaning was a significant predictor of length of MV.
This dissertation has fulfilled an important gap in the evidence base for cardiac dysrhythmias during weaning from MV. Cardiac dysrhythmias and HRV alterations should be systemically evaluated during MV and weaning trials in order to decrease length of MV.
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Hope, Alexander James. "Returning to the abyss : metaphor, or the negotiation between sensible and intelligible". Thesis, Lancaster University, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658052.
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This thesis aims to make an intervention in contemporary metaphor studies. It eschews the problematic simplifications of most of the research stemming from cognitive linguistics, and also challenges the view of the relations between sensible and intelligible as a 'correlationist circle' put forward following the publication of Quentin Meillassoux's After Finitude. In contrast, it argues that a further development of the projects of philosophers such as Paul de Man, Jacques Derrida and Jean-Francois Lyotard offers a way to re-examine the relationship between sensible and intelligible, to explore what metaphor might tell us about a properly post-Kantian materiality. That is to say, this thesis aims to develop a materiality different to that of positivism, a materialism which embraces the vertigo induced by attempting to leap the abyss between intelligible and sensible, sensible and intelligible. To achieve this aim, it starts with a simple hypothesis: that what we call 'metaphor' is the privileged manifestation of the abyssal relationship between sensible and intelligible, and that, to cite Jean-Francois Lyotard, 'one never touches the thing itself but metaphorically'. We then proceed to work through a number of examples to try to follow the folds and reversals of this relationship, or perhaps rather these relationships. First, we re-examine the ninth of Walter Benjamin's 'Theses on the Philosophy of History', in Harry Zohn's idiosyncratic but now iconic translation, to examine not how it expresses or relates to Benjamin's wider corpus, but rather how the relationship of this text with its textual double serves to resist the repeated imprint of cliche. Secondly, we return to the scene of Jacques Derrida's 'Khora' and investigate how the 'metaphorical' schema of Plato's Timaeus, a creation myth about the construction of the universe from the intelligible eidos, seems to open up a fissure in one of the foundation stones of metaphysics. In order to help dispel one of the persistent metaphysical fallacies about metaphor, we then attempt to follow the return of this text to the sensible, in the form of architecture, as Peter Eisenman and Derrida's proposed garden for Bernard Tschumi's Pare de Ia villette in Paris. Finally, we examine Catherine Malabou's reworking of Hegelian 'plasticity' in relation to neuroscience and try to work through the ways in which she attempts to control the disseminative and metaphorical properties of the concept and its relation to capital. Throughout this text we seek to push logos to master a rhetoric or muthos to which it is not adequate, and thus both show the fissures through which we might feel the draft of the abyss below and better understand the phantasmal bridge that constitutes that abyss in the very movement of its construction.
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Podmore, Simon David. "The anatomy of the abyss : Kierkegaard, modernity and the self before God". Thesis, King's College London (University of London), 2005. https://kclpure.kcl.ac.uk/portal/en/theses/the-anatomy-of-the-abyss--kierkegaard-modernity-and-the-self-before-god(52cef225-b06d-4ff1-b835-6d7ee676b7eb).html.
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Gudeman, Edward James. "The view from below : a study of the abyss in John's Apocalypse". Thesis, University of Bristol, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.738197.
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Jerräng, Carlstedt Ludwig. "A comparison between emergency ventilation systems semi-transvers ventilation and natural ventilation in Road Tunnel A". Thesis, Luleå tekniska universitet, Byggkonstruktion och brand, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65671.
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Krapivner, Vera. "The Abyss Gazes Also : A psychological analysis of Rorschach in Alan Moore’s Watchmen". Thesis, Stockholms universitet, Engelska institutionen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-61598.
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Abstract There is a common assumption that graphic novels belong to the category of children’s literature, however that statement is no longer true. Indeed, the genre of the graphic novel has progressed and taken on a more serious approach, this due to largely one author, Alan Moore. Despite ever-increasing research on Moore’s famous graphic novel Watchmen, not many have touched upon Gothic influences on the novel and what effect this genre has on the characters, especially the character of Rorschach. Instead, Watchmen is often associated with such genres as political thriller, science fiction and postmodern literature. This essay will show the presence of Gothicism through an analysis of one of the main protagonists, Walter Kovacs, better known as Rorschach. I employ the well-known theories of psychoanalysis developed by Sigmund Freud. I discuss conceptual implications of the method called the Rorschach test developed by Herman Rorschach in order to deepen the psychoanalytic relevance for the Gothic elements. Furthermore, Freudian analysis of the uncanny proved to be especially useful in the analysis. Uncanny is the fearful recognition of unsettling thoughts that tell you to give in to the animalistic urge to kill, destroy and exact vengeance. The uncanny is largely the common ground between the Gothic genre and psychoanalysis, and is crucial for a deeper understanding of the novel and of Rorschach.
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Marubbio, M. Elise 1963. "The edge of the abyss: Metamorphosis as reality in contemporary Native American literature". Thesis, The University of Arizona, 1993. http://hdl.handle.net/10150/291692.
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The edge of the abyss: Metamorphosis as reality in contemporary Native American literature, approaches the concept of metamorphosis from a metaphysical and philosophical perspective as a culturally defined reality. It focuses on the works of contemporary Native American writers: Leslie Silko, Scott Momaday, Gerald Vizenor, and Louise Erdrich, who address the metamorphic properties of Time and the metamorphic abilities of Man as a continuing link to the supernatural and natural worlds through stories which descend from a history of oral traditions. The Edge of the Abyss explores the use of language and stories as a cultural survival technique for the retention of tribal ideology and world view. It addresses the fine line which exists between Western and Native American concepts of reality in order to re-define metamorphosis within a cultural context. This thesis uses an interdisciplinary approach utilizing anthropological, sociological, shamanistic, literary, and cultural materials in a comparative analysis.
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Jutila, Alexander Lee. ""An Abyss of Anarchy, Nihilism, and Despair"| Historical Representations of Anarchists in Britain". Thesis, The University of North Carolina at Charlotte, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=13419186.
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Studies on historical representations of anarchists tend to focus on terrorist depictions and how they compare to the actual activities of the anarchist movement. Using British print media, this thesis explores other political, cultural, and social representations of anarchists in an effort to expand the field beyond a strict focus on terrorism. In addition, this thesis will also investigate the ways Cesare Lombroso and Havelock Ellis shaped discussions of anarchists in the British public sphere.
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Todd, Susan Katharine. "Shock assisted ventilation". Thesis, University of Surrey, 1999. http://epubs.surrey.ac.uk/843314/.
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Respiratory distress syndrome is the major cause of mortality in premature babies. Increasing numbers of neonates are now surviving the disease due to advances in techniques used in neonatal intensive care units. Mechanical ventilation is an essential part of the treatment for respiratory distress syndrome and is an area in which improvements and modifications are constantly being made. In the early 1980's a new infant ventilator was introduced involving ventilation by a distal jet. As yet, the mechanisms by which the distal jet ventilator enhances gas exchange are unknown. Original experiments are carried out to record the attenuation and speeds of the pressure wave produced by the distal jet ventilator. The observed changes in wave shape and the high wave speed imply that the ventilator produces waves operating within an acoustic regime. An understanding of the gas exchange mechanisms active in shock assisted ventilation is initiated by a comprehensive investigation of the transport properties of acoustic waves. The advection and diffusion that result from a linear concentration gradient in an acoustic flow are analysed, from the Eulerian and Lagrangian viewpoints. The Eulerian investigation shows that the total flux of tracer through a given pipe can be optimized by choosing the frequency appropriately. The Lagrangian transport is increased as both frequency and radius increase. For all values of parameters, Lagrangian streaming is observed, with a steady net flow in the pipe core away from the tube entrance and an opposing net flow near the tube walls.
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CHAIPRASIT, KRIRKPHAN. "Designing for Ventilation". The University of Arizona, 1989. http://hdl.handle.net/10150/555319.
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Bergman, Eric y Emma Gahne. "Ventilation av inomhusskjutbanor". Thesis, KTH, Byggteknik och design, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-257747.
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Skytte med eldhandvapen skapar buller, utsläpp av farliga ämnen och risk för att avlossade projektiler missar sina mål och istället hamnar utanför skjutbanan. Att förlägga skjutbanor inomhus löser vissa av dessa problem. Samtidigt kan risken för att utsättas för farliga ämnen öka för dem som brukar skjutbanan. En nyckelfaktor för att omhänderta dessa farliga ämnen och därmed skapa en god arbetsmiljö på inomhusskjutbanan är att ventilationen fungerar på rätt sätt. Syftet med detta arbete är främst att utvärdera hur ventilationen på inomhusskjutbanor bör utformas för att ventilera bort de hälsofarliga ämnen som uppstår. Arbetet har särskilt fokuserat på blyföroreningar men resultatet är generaliserbart även för många andra föroreningar som är aktuella. Arbetet är en del av Fortifikationsverkets pågående projekt om framtidens inomhusskjutbanor. Gränssättande för ventilationen är att arbetsmiljön på en inomhusskjutbana måste uppfylla relevanta arbetsmiljökrav. Utöver frågan om ventilation belyses även andra aspekter som är av vikt för att säkra en god arbetsmiljö. Arbetet har baserats på en forskningsöversikt där material från 1975 och fram till idag har studerats. Sökningarna har skett både strukturerat och riktat. Den strukturerade sökningen har skett i Web of Science och Scopus. Arbetet har identifierat de normer som används internationellt och som också har legat till grund för många av de skjutbanor som uppförts i Sverige. Vidare har arbetet identifierat den ursprungliga rapport som merparten av den tillgängliga litteraturen baserats på. I denna ursprungliga rapport har vi även identifierat viktiga frågetecken angående vilka grundförutsättningar som denna rapport baserats på. Resultatet av forskningsöversikten är att skjutbanor bör projekteras med laminärt flöde (“kolvströmning”) från skyttarna och mot kulfånget. Ventilationen bör projekteras med ett flöde på mellan 0,25 och 0,4 m/s. Ett bra verktyg under projekteringen är CFD-simuleringar. Med dessa kan olika tekniska lösningar utvärderas och för befintliga skjutbanor kan även orsak till eventuella problem undersökas. CFD-simuleringsresultaten bör i görligaste mån verifieras mot uppmätta värden. Vidare är både städning och personlig hygien viktiga faktorer för att arbetsmiljön på en inomhusskjutbana skall vara god. Ytskikt som är lätta att städa skall väljas och förutsättningar för att hantera både tvätt av arbetskläder och personlig hygien skall finnas. Dessa resultat knyts ihop under diskussionskapitlet där två grundläggande scenarier formuleras, ett för en nybyggnation och ett för en ombyggnad av en befintlig inomhusskjutbana.The use of firearms creates noise pollution, release of toxic elements and a risk that the projectiles miss the targets and end up outside of the firing range. One of the solutions to these issues is to erect walls and a roof around the range, and thus create an indoor firing range. This might however increase the range users’ exposure to toxic elements related to the discharge of firearms. To mitigate this the indoor firing range needs a properly designed and well-functioning ventilation system. The purpose of this study is to evaluate how ventilation systems for indoor firing ranges should be designed in order to remove the toxic elements released when shooting. The study is primarily focused on lead pollution, but the results can also be generalised for a multitude of other relevant pollutants. The study is part of the Swedish Fortifications Agency (Fortifikationsverket) project regarding the design of future indoor firing ranges. The design parameters for ventilation systems at indoor firing ranges are regulated by the occupational safety and health regulations. In the final part of the study the authors also address other important aspects to create a safe working environment at indoor firing ranges. This study is conducted as a research review where literature from 1975 up until today has been studied. Search terms based on permutations of “shooting”, “firing”, “range”, “ventilation” and “firearm” have been used in the Web of Science and Scopus databases. The resulting list, after being culled for duplicates and “false positives”, contained approximately 70 articles. Reviewing these articles let us identify the design parameters used both internationally and nationally in Sweden. We also identified the original report that most of the internationally available literature is based upon. In this Bachelor of Science thesis, we also raise some questions related to the original report and the prerequisites it was based upon. The result of the research survey is that the ventilation for indoor firing ranges should be designed for laminar flow (piston flow) in the direction from the shooters towards the bullet trap. The air flow should be between 0,25 and 0,4 m/s (50 to 75 feet per minute). A good tool when designing the range ventilation is CFD simulations. CFD simulations allow for early phase evaluation of different design solutions. Similar simulations can also be used when problem solving problems on already existing ranges, if any. Furthermore, both cleaning and personal hygiene are crucial components to achieve a safe working environment at indoor firing ranges. To facilitate cleaning the range should have surface materials that are non-porous and easy to clean. Washing facilities for work clothes and personal hygiene should be present. These results are addressed as part of the discussion chapter in the Bachelor of Science thesis where two basic scenarios are formulated, one for building a new indoor firing range, and one for redesigning an existing indoor firing range.
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Pálsson, Daði Snær. "Hybrid Ventilation : Simulation of Natural Airflow in a Hybrid Ventilation System". Thesis, KTH, Installations- och energisystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146761.
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This thesis investigates the possibilities of using hybrid ventilation in an office building in Stockholm. The focus is on simulating the natural airflow to find out for which conditions it is sufficient. The thesis is done at White Arkitekter AB in cooperation and under the supervision of environmental specialists working there. A literature study is carried out to study what has been done before in Sweden as well as in other countries. Computer simulations are used to simulate the airflow to examine the conditions and architecture. A synthetic computer model representing a realistic office building is built up as a starting point. The ventilation method for the natural ventilation part is to take air in through the fa\c{c}ade and use the stack effects in an atrium for natural ventilation. By altering the architecture and the sizes of the openings according to the results from the simulations the building is dimensioned and formed to cope with the rules and requirements about the indoor air quality in workplaces. The simulations are done with a multi zone energy performance simulation tool that can simulate airflows and indoor air climate conditions in the zones as well as the energy consumption. Computational fluid dynamics calculations are then used to more closely simulate the conditions within the zones. The results from those simulations suggest that the natural ventilation as a part of a hybrid ventilation works for all the floors of the building for up to 10$\,^{\circ}\mathrm{C}$. The computational fluid dynamics simulations showed that the thermal comfort of all the occupants is fulfilled for these conditions but there is a risk of occupants experiencing draught because of to high velocities in the air especially for the colder outdoor temperatures. For the higher outdoor temperatures the airflow needs to be enforced to ensure sufficient conditions for the occupants and for the colder temperatures mechanical ventilation is needed to decrease heat losses and avoid the risk of draught.
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Lofaso, Frédéric. "Effet de la ventilation mécanique sur le contrôle de la ventilation". Paris 12, 1996. http://www.theses.fr/1996PA120064.
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Jusqu'a ces dernieres annees les modifications de l'activite respiratoire au cours de la ventilation mecanique avaient ete peu explorees chez l'homme. Nous avons donc etudie les mecanismes physiologiques qui expliquent une diminution de l'activite inspiratoire et une modification de l'activite expiratoire sous ventilation mecanique. En effectuant une augmentation progressive du co#2 inspire sous ventilation mecanique, nous avons pu mettre en evidence l'existence d'une inhibition extra-humorale (non liee a la capnie) de l'activite inspiratoire. En montrant qu'au cours de la ventilation mecanique, l'inhibition extra-humorale de l'activite inspiratoire est moins presente chez les transplantes bipulmonaires que chez les sujets normaux, nous avons pu evoquer l'importance du role des recepteurs bronchiques a l'etirement dans la genese de cette inhibition extra-humorale. Nous avons observe que l'importance de l'inhibition de l'activite inspiratoire depend de l'importance du debit inspiratoire initial insuffle par le ventilateur. Ainsi, l'activite inspiratoire peut etre reduite a une valeur proche de zero et la compliance thoracopulmonaire peut etre mesuree chez des sujets eveilles. Nous avons egalement pu mettre en evidence l'apparition d'une activite expiratoire sous certains modes d'assistance ventilatoire, responsable de l'apparition d'une pression expiratoire positive intrinseque. Ainsi, nous avons observe qu'une ventilation en pression positive continue peut induire, du fait de l'augmentation de volume pulmonaire, une activite expiratoire remplacant l'activite inspiratoire ; et que cette activite expiratoire disparait si l'augmentation de volume pulmonaire est prevenue par une contrepression thoraco-abdominale
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Nöjd, Mathilda y Emma Petersson. "Parallelltak med mekanisk ventilation : En jämförelse mellan mekanisk och naturlig ventilation". Thesis, Uppsala universitet, Institutionen för samhällsbyggnad och industriell teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-415713.
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To build and conserve the moisture proof roof constructions is a central problem in the building industry. Outdoor ventilated roof constructions is considered to be a riskful construction that can be burdened with moist damages. It is problematic to build parallel roof with low energy consumption that are resistant to moist. New demands of energy efficient buildings has contributed to an increased amount of insulation in roof constructions. Well insulated roof constructions in combinations with moist and cold winters is the main cause to the current moisture problematic in Sweden. High relative humidity in air gap and high moisture in materials increases the risk for mold growth. The winter is a critical period of time due to outside air containing high amount of moisture that can be harmful for roof constructions that are ventilated by outside air. Organic materials like wood is sustained a risk for mold growth by a relative humidity of 75%. Duration and a favorable temperature are also required for mold growth to take place. Parallel roofing usually consists of wood materials that can be attacked by mold at favorable conditions. Tongue and groove and battens have a position close to the outer layers in a parallel roofing that contributes to them being exposed to mold growth that should be especially consider. There is a large need for technical solutions to be able to handle the current moist problems in Swedish constructions. Mechanical ventilation is one of the technical solutions that is controlled by sensors that regulates the ventilations in roof constructions air gap. The mechanical ventilation is controlled by sensors and fans. Sensors measure and compares the current temperature and vapour content of the outside air and the air in the air gap. At appropriate conditions the ventilation activates and at inappropriate conditions the ventilation is limited. This report is focused on comparing outdoor ventilated parallel roofing to mechanical ventilated parallel roofing. This report studies an existing building outside Norrtälje with parallel roofing. This system is equipped with sensors that logs the temperatures, relative humidity and moisture on the tongue and groove and battens in the air gaps in both the part of the roof that is mechanically ventilated and outdoor ventilated. The collected data have been analyzed in a risk analysis and a mold analysis. The risk analysis compares data from 2 or more measuring points to be able to analyze the difference in result. The mold analysis consists of a simulation in the program: WUFI Bio and delivers an index of calculated mold growth per year. This study indicates that roof constructions with outdoor ventilation runs a big risk of mold growth during the winter season. The mechanically ventilated roof construction shows a trend that reduces the risk of mold growth in all orientations and in the ridge. The measuring points with southern orientations shows a trend that, of a mechanically ventilated roof, will reduces mold growth in a higher degree compared to the other orientations. Even though the reduced effect of mold growth in mechanically ventilated roof constructions the results indicates a result where mold growths on tongue and groove and battens. Although the risk is not as extensive as in naturally ventilated roofs.Att bygga och bibehålla fuktsäkra takkonstruktioner är ett centralt problem inom byggbranschen. Utomhusventilerade takkonstruktioner anses vara en riskkonstruktion som kan drabbas av fuktskador. Det är problematiskt att bygga parallelltak med låg energiförbrukning som är beständigt mot fukt. Nya krav på energieffektiviseringar har bidragit till ökade mängder isolering i takkonstruktioner. Välisolerade takkonstruktioner i kombination med fuktiga och kalla vintrar är den huvudsakliga orsaken till den rådande fuktproblematiken som finns i Sverige. Hög relativ fuktighet i luftspalten och hög fuktkvot i materialet ökar risken för mikrobiell påväxt. Vinterhalvåret är en kritisk period eftersom utomhusluften innehåller hög mängd fukt som kan vara skadlig för takkonstruktioner som utomhusventileras. Organiska material som trävirke löper risk för mikrobiell påväxt vid en relativ fuktighet på 75 %. Det krävs även varaktighet och en gynnsam temperatur för att mikrobiell påväxt ska kunna uppstå. Parallelltak består vanligtvis av trämaterial som kan angripas av mögel vid gynnsamma förutsättningar. Råspont och läkt har en position långt ut i parallelltaket som bidrar till att de löper stor risk för mögelpåväxt och bör särskilt beaktas. Det finns stort behov av tekniska lösningar för att kunna lösa den rådande fuktproblematiken i svenska bostäder. Mekanisk ventilation är en teknisk lösning som styr och reglerar ventilationen i takkonstruktionens luftspalt. Den mekaniska ventilationen styrs av sensorer och fläktar. Sensorerna jämför temperatur och ånghalt i utomhusklimatet med klimatet i luftspalten. Vid goda klimatförhållanden tillåts ventilation i luftspalten och vid sämre förhållanden begränsas ventilationen. Syftet med den mekaniska ventilationen är att parallelltaket endast ventileras när det leder till uttorkning. Rapporten har fokus på att jämföra utomhusventilerat parallelltak (naturlig ventilation) med mekanisk ventilation. Rapporten studerar en befintlig byggnad med parallelltak belägen utanför Norrtälje. Parallelltaket är utrustat med loggrar som mäter relativ fuktighet, temperatur och fuktkvot i råspont eller läkt i luftspalter med naturlig och mekanisk ventilation. Mätdata har analyserats i en riskanalys och en mögelanalys. Riskanalysen jämför mätdata från två eller flera mätpunkter för att kunna analysera skillnader i resultatet. Mögelanalysen består av simuleringar i programmet WUFI Bio och anger ett fiktivt mögelindex för beräknad påväxt i millimeter per år. Studien indikerar att luftspalter med naturlig ventilation löper stor risk för mögelpåväxt under vinterhalvåret. Den mekaniska ventilationen uppvisar en trend som reducerar risken för mögelpåväxt i samtliga väderstreck, inklusive taknock. Mätpunkter med mekaniska ventilation orienterad mot söder och väster uppvisar en trend som procentuellt reducerar mögelpåväxten i högre grad jämfört med resterande väderstreck. Trots den reducerande effekten med mekanisk ventilation indikerar resultatet att det finns risk för mögelpåväxt även på råspont och läkt i luftspalter med mekanisk ventilation. Däremot är risken inte lika omfattande.
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Walsh, Brian Kendall. "Computer-aided mechanical ventilation". Thesis, Rush University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10111109.
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Statement of the problem: The systematic implementation of evidence-based practice through the use of guidelines, checklists and protocols has been shown to mitigate the risks associated with MV, yet variation in practice remains prevalent. Recent advances in MV, physiologic monitoring, device-to-device communication, computer processing and software engineering have allowed for the development of an automated point-of-care access to real-time goal setting and practice variance identification. Our aim was to assess the utility of a computer-aided MV (CAMV) system that displays variances and scores the overall MV course. Methods: A retrospective categorization of the ventilation and oxygenation statuses of patients within our pediatric intensive care unit (PICU) over a 2 '/z years period utilizing 15 rule-based algorithms was initiated as a proof of concept. Goals were predetermined based on generally accepted values. All patient categories were calculated and presented as a percent of recording time. Following the feasibility study, a retrospective observational study (baseline), followed by two sequential interventions made over a 2-month period was conducted. Phase I comprised a survey of goals of MV by clinicians caring for patients being monitored by the CAMV system. Phase II intervention was the setting and monitoring of goals of MV with a web browser based data visualization system (T3). An outcome measurement tool was developed to score each MV course. The MV score (MVS) evaluated four outcomes: (1) acceptable ventilation, (2) acceptable oxygenation, (3) barotrauma free and (4) volutrauma-free states as a percent of recording time. Results: Pilot consisted of 222 patients. The Baseline phase evaluated 130 patients, Phase I enrolled 31 patients and Phase II enrolled 36 patients. There were no differences in demographic characteristics between cohorts. One hundred and seventy-one surveys were completed in Phase I. An increase in the use of T3 by 87% was observed in Phase II from Phase I. MVS improved by 8.4% in Phase I and 11.3% in Phase II from Baseline. The largest improvement was in the volutraumafree category. MVS was 9% higher on average in those who survived. Conclusion: The use of CAMV was associated with an improvement in MVS. Further research is needed to determine if improvements in MVS through a targeted, process-oriented intervention such as CAMV will lead to improved patient outcomes.
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Patel, Deena. "Optimisation of neonatal ventilation". Thesis, King's College London (University of London), 2014. https://kclpure.kcl.ac.uk/portal/en/theses/optimisation-of-neonatal-ventilation(020793ce-af66-48de-b969-bc0d702a673f).html.
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Background: Infants born prematurely or at term may unfortunately suffer morbidity from ventilator related complications. New ventilation techniques have been developed aimed at reducing that morbidity, but have yet to be fully evaluated. Aim: To optimise the delivery of new techniques using physiological outcome measures. Methods: A series of studies were undertaken. The objectives were: • In prematurely born infants with acute respiratory distress, to determine the optimal level of volume targeted ventilation. • In term and prematurely born infants, to assess the effect on work of breathing of the addition of pressure support (PSV) to synchronised intermittent mandatory ventilation (SIMV) during weaning and then compare the efficacy of PSV to assist control (ACV) in a randomised trial. • To perform in vitro and in vivo assessments of proportional assist ventilation (PAV). • The physiological outcome measures were the transdiaphragmatic pressure time product (PTPdi), respiratory muscle strength, thoracoabdominal asynchrony, tension time index of the diaphragm and assessment of asynchronous events. Results: A volume target of 4ml/kg in comparison to 6ml/kg or no volume targeting resulted in a higher PTPdi (p <0.001). In infants weaning from the ventilator, the PTPdi was 20% lower (p <0.001) during SIMV with PSV in comparison to SIMV alone. No significant difference in the duration of weaning was demonstrated between PSV and ACV. The in vitro PAV study highlighted abnormalities of airway pressure waveform and higher than excepted airway pressures during both elastic and resistive unloading. Conclusions: Low levels of volume targeting even within the ‘physiological’ range significantly increased the work of breathing. A triggered mode supporting all the infant breaths was superior to when a limited number of breaths were supported. When similar inflation times were used, triggered modes supporting all breaths were equally efficacious. Unloading levels affect the efficacy of PAV; these may be determined by using the ventilator calculated respiratory mechanics.
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Shetty, Sandeep Krishnanand. "Optimisation of neonatal ventilation". Thesis, King's College London (University of London), 2018. https://kclpure.kcl.ac.uk/portal/en/theses/optimisation-of-neonatal-ventilation(4bf50e9a-9ef5-41f9-baff-db581cf231d2).html.
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Background: Survival of neonates requiring respiratory support has improved over the last two decades, but unfortunately many suffer morbidity from ventilator related complications. Aim: To undertake a series of studies using physiological measurements as outcomes in infants with evolving or established bronchopulmonary dysplasia (BPD) to test the following hypotheses and carry out a national survey. Hypotheses: Proportional assist ventilation (PAV) compared to assist control ventilation (ACV) would improve oxygenation as assessed by the oxygenation index (OI). Neurally adjusted ventilatory assist (NAVA) compared to ACV would improve oxygenation. Use of heated, humidified, high flow nasal cannula (HHFNC) would not have increased given the results of recent randomised trials. Continuous positive airway pressure (CPAP) would reduce the work of breathing (WOB) and thoraco-abdominal asynchrony (TAA) and improve oxygen saturation (SaO2) compared to HHFNC. Methods: Four studies were undertaken. The OI was calculated from measurement of blood gases and the level of respiratory support. A survey was undertaken of lead practitioners in all UK neonatal units. The WOB was assessed by measurement of the pressure time product of the diaphragm (PTPdi) and TAA using respiratory inductance plethysmography (RIP).
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Howe, Kimberly Palazzo. "Mechanical Ventilation Antioxidant Trial". Case Western Reserve University School of Graduate Studies / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=case1112877564.
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Chowdhury, Olie. "Optimisation of neonatal ventilation". Thesis, King's College London (University of London), 2015. http://kclpure.kcl.ac.uk/portal/en/theses/optimisation-of-neonatal-ventilation(eac22c4d-b74f-4e29-8a7f-995a5c17c8a9).html.
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Background: Survival of neonates requiring intensive care has improved, but many suffer ventilator-related complications. This thesis aims to optimise use of ventilation techniques, with a focus on infants born at term. Hypotheses: In infants with acute respiratory failure, volume-targeted ventilation (VTV) will be superior to pressure-limited ventilation (PLV). Proportional assist ventilation (PAV) will be effective in reducing elastic and resistive work of breathing (WOB) in an in vitro experiment. Methods: A series of studies were undertaken. National survey of practice in relation to respiratory support in term infants. Comparison of WOB at different levels of volume-targeting in term infants. Randomised comparison of VTV and PLV in preterm infants. Analysis of spontaneous respiratory activity in ventilated term infants. In vitro study of effect of elastic and resistive unloading on WOB during PAV. Results: Respiratory support practices for term-born infants differed between different levels of care. In term infants, WOB was higher at 4ml/kg compared to 5 and 6ml/kg. In preterm infants, there was no difference in time to achieve weaning criteria on VTV versus PLV. Fewer infants on VTV experienced hypocarbia. Patterns of patient-ventilator interaction were described for term-born infants. Active expiration was more common on SIMV versus CMV, and less common on triggered ventilation at 4ml/kg compared to 6ml/kg or no volume-targeting. Using PAV, elastic unloading was more effective than resistive unloading in reducing WOB.
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Mallya, Prashant Moodabidri. "Pressure support ventilation or synchronised intermittent mandatory ventilation for weaning premature babies on mechanical ventilation : a multi centre randomised controlled trial". Thesis, University of Newcastle upon Tyne, 2017. http://hdl.handle.net/10443/3820.
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Mechanical ventilation is life saving as a respiratory support for preterm infants with respiratory distress syndrome. There is good evidence now that any form of volume-targeted modality of mechanical ventilation is superior over pressure-targeted modality to reduce chronic lung disease and death. It is perceived by minimising the duration of mechanical ventilation would reduce the exposure to positive pressure breaths and thereby could reduce long term morbidities such as chronic lung disease. An area of lacunae is defining what is weaning on mechanical ventilation. Whilst most clinicians will agree when to commence mechanical ventilation there is paucity of consensus on when to commence weaning on mechanical ventilation and the best way for weaning to prevent extubation failure. Pressure support ventilation (PSV) is pressure-targeted modality of ventilation designed to support spontaneous breathing. It was designed as a weaning mode to facilitate extubation. Pure PSV has no back up rate. Currently, PSV is used in combination with other modes such as SIMV to provide some back up respiratory rate for the unreliable respiratory drive due to apnoea in preterm infants. However, there is inadequate understanding of the appropriate PSV level for weaning preterm infants on mechanical ventilation. Clinicians routinely use 50%-70% of peak inflation pressures used prior to commencing the weaning mode. Use of Pressure support ventilation (PSV) could be variable- with one extreme utilising minimal pressure to just overcome the tube resistance (PSmin) with the aim to prevent fatigue and avoid extubation failure. The other extreme is augmenting spontaneous breathing effort to provide a full tidal volume breath (PSmax). Features of flow triggering and flow cycling aid synchrony at inspiration and expiration and this allows greater autonomy to the infant to control all aspects of its breathing cycle. Addition of some PSV to aid spontaneous breaths has shown to reduce the duration of weaning. A randomised controlled study was designed to compare duration of weaning using PSmax and SIMV. Infants less than 32 weeks gestation at birth with respiratory distress syndrome from surfactant deficiency were eligible to participate. 93 infants stratified in three groups based on their gestation at birth were randomised over 30-month period. Weaning was commenced in the randomised mode when infants reached a set priori of MAP < 10 cm H2O, FiO2 < 40% and had a reliable respiratory drive for at least 2 consecutive hours. In the control arm (SIMV with PSmin)– clinicians reduced the back up rate to wean. In the intervention arm (PSmax with ten SIMV breaths)- clinicians reduced the PSVmax to PSVmin for weaning. A minute ventilation test was performed to assess readiness to extubation when both arms reached PSmin with ten back up SIMV breaths. Primary outcome for the study was duration of weaning on mechanical ventilation. Our study suggests there is no difference between the two groups but there is a trend towards faster extubation in the PSV arm (the median time to extubate in the SIMV arm was 42 (95%CI, 28.23 to 55.76) hours and the median time to achieve the primary outcome in the PSV arm was 31 (95% CI, 12.59 to 49.40) hours). The survival distribution between the interventions was statistically not significant, Chi-square 0.768, p 0.381. This effect was more evident in bigger infants weighing at least 1500 grams. There was no difference in the secondary outcomes between the two groups and common preterm morbidities were equally balanced. There were no adverse events during the study period to report. Contrary to the general belief, infants are not disadvantaged by weaning on PSVmax. Clinical outcomes were comparable with the traditional SIMV method of weaning on mechanical ventilation.
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Tomasi, Roberta. "Energy performance, comfort and ventilation effectiveness of radiant systems coupled with mechanical ventilation". Doctoral thesis, Università degli studi di Padova, 2012. http://hdl.handle.net/11577/3422467.
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This work presents the results of different numerical and experimental studies about energy performance, thermal comfort and ventilation effectiveness of radiant systems combined with different types of mechanical ventilation. Experimental studies have been carried out in Italy, in a test room in the laboratories of the company RHOSS S.p.A in Codroipo (Udine) and in Denmark, in a test room in the laboratories of the International Centre for Indoor Environment and Energy (ICIEE), at DTU (Danish Technical University), in Lyngby.
Radiant systems in residential and in office buildings are increasingly used because of the low heating or cooling demand and, at the same time, for the good thermal comfort they assure.
The thermal output estimation of radiant system in steady state condition needs the determination of the convective heat transfer coefficient from the surface to the room; a critical review among the correlations available in literature have been carried out and correlations for heated ceiling and cooled floor have been presented. Furthermore the variation of convective heat transfer coefficients, depending on the considered ventilation systems, has been estimated by means of the Computational Fluid Dynamics (CFD) technique.
The energy performance and thermal behavior of radiant systems during transient conditions have been predicted by using experimental tests and numerical calculations with the software Digithon that was developed by the University of Padua. In this work the validation of this software by comparison with experimental data has been presented.
In new and renovated buildings the high tightness and high insulation determine a potential risk of poor indoor air quality and condensation at the surfaces; for this reason an efficient ventilation system is necessary to provide for fresh air in the rooms. In a low polluted building air quality depends on human bioeffluents, among which carbon dioxide is considered the most significant one. By using numerical simulations (CFD) the effects of the supply and extract air terminals on contaminants distribution in offices equipped with a cooled ceiling has been investigated. Besides, in order to fully characterize the indoor climate of residential rooms or offices, an extensive experimental study has been carried out in a test room to determine both thermal comfort and ventilation effectiveness for different solutions of mixing ventilation and displacement ventilation combined with floor radiant systems. In particular, the effects of supply and extract air terminals positions by using low air change rates in mixing ventilation and the effects of different ventilation rates with displacement ventilations terminals have been analyzed. Results from experiments have been used for the validation of a CFD model for the prediction of air distribution in rooms equipped with mixed or displacement ventilation, combined with heating/cooling floor systems.In questo lavoro di dottorato vengono presentati i risultati di uno studio sui sistemi radianti per il raffrescamento ed il riscaldamento in ambito civile e sulla loro integrazione con opportuni sistemi di ventilazione meccanica. Le prestazioni energetiche in regime stazionario e transitorio, così come le prestazioni di comfort termico e di qualità dell’aria garantita, sono state studiate mediante l’ausilio di prove sperimentali, di simulazioni fluidodinamiche e di altri codici di calcolo. Gli studi sperimentali sono stati realizzati in parte in Italia, presso i laboratori dell’azienda RHOSS S.p.A di Codroipo (Udine), e in parte presso i laboratori dell’ICIEE (International Centre for Indoor Environment and Energy), dell’Università Tecnica di Danimarca, (DTU) a Lyngby (DK). L’aspetto più rilevante di questo lavoro è legato alla sempre maggiore diffusione dei sistemi radianti come soluzione per il riscaldamento ed il raffrescamento di ambienti interni, in quanto combinano vantaggi energetici ad elevati livelli di comfort termico. Per ragioni dovute alla piccola differenza di temperatura tra l’ambiente e il fluido termovettore, i sistemi radianti si interfacciano molto bene con caldaie a condensazione, pompe di calore, sistemi free cooling, collettori solari e altre sorgenti rinnovabili e soluzioni ad alta efficienza energetica. Il calcolo della resa termica di tali sistemi viene eseguito mediante le equazioni valide per la convezione in regime stazionario, come quelle fornite dalle norme Europee EN 1264 ed EN 15377. In letteratura esistono numerose correlazioni valide per il calcolo della potenza convettiva di superfici orizzontali e verticali e di superfici interne di stanze reali; le norme EN 1264 ed EN 15377 consigliano correlazioni diverse e lo stesso accade per codici si simulazione energetica degli edifici. Ad oggi non è disponibile una chiara definizione di coefficiente di scambio termico convettivo per i sistemi radianti, specialmente per quanto riguarda pavimenti freddi e soffitti caldi. Il primo obiettivo di questa tesi è stato di realizzare un’analisi critica delle correlazioni disponibili in letteratura adatte ai sistemi radianti e di proporre delle equazioni per ogni configurazione di riscaldamento o raffrescamento da soffitto, pavimento o parete. In ambito residenziale il pavimento radiante rappresenta una delle soluzioni più richieste grazie all’elevato livello di comfort termico garantito; tuttavia, al fine di migliorare la qualità dell’aria e specialmente a causa della necessità di deumidificare l’aria in estate per evitare formazione di condensa, accanto al sistema radiante andrebbe installato un sistema di ventilazione meccanica. L’aria primaria in estate è solitamente a temperatura più bassa della temperatura della stanza e dotata di una certa velocità; nel caso di immissione da bocchette installate vicino ad una superficie radiante, lo scambio convettivo potrebbe venire variato rispetto ad una soluzione senza ventilazione. Mediante uno studio con simulazioni fluidodinamiche CFD è stato possibile valutare l’incremento dello scambio convettivo da un soffitto freddo mediante lo sfruttamento di aria primaria. I sistemi radianti, in particolare i sistemi a soffitto, rappresentano un’ottima soluzione per rimuovere i carichi termici degli uffici durante il periodo estivo, ma allo stesso tempo possono essere usati per il riscaldamento invernale degli stessi con buone prestazioni energetiche e di comfort termico. La differenza sostanziale è che durante la stagione invernale il sistema radiante si trova a lavorare prevalentemente in regime stazionario, mentre durante la stagione estiva i carichi esterni dovuti alla radiazione solare e all’escursione diurna, accompagnati da carichi interni dovuti all’occupazione umana, determinano condizioni piuttosto variabili durante la giornata. Il comportamento di sistemi radianti a regimi stazionari e transitori sono state studiate mediante prove in camera climatica; inoltre un modello di calcolo chiamato Digithon, sviluppato all’interno del Dipartimento di Fisica Tecnica dell’Università di Padova, è stato validato mediante un confronto con dati sperimentali. Seguendo un’opportuna procedura, riportata nella tesi, è stato possibile impostare dei profili di carico che simulano una tipica giornata estiva o invernale su una parete della stanza ed è stato studiato come il soffitto radiante reagisca per cercare di mantenere una certa temperatura di comfort nella stanza. Al fine di mantenere una buona qualità dell’aria, evitare la formazione di condensa, ma anche per incrementare la capacità di raffrescamento quando richiesto, i sistemi radianti per gli uffici andrebbero sempre associati a sistemi di ventilazione meccanica. Accanto ai tradizionali sistemi a soffitto con ventilazione a miscelazione, le soluzioni con ventilazione a dislocamento accoppiate a sistemi a pavimento o a soffitto sono alternative di crescente interesse per gli uffici. In edifici dove sia bassa la quantità di inquinanti emessi dai materiali edili, dai mobili e dalle attrezzature, la quantità di bioeffluenti dagli occupanti, dei quali l’anidride carbonica CO2 è normalmente usata come principale indicatore, è determinante per la qualità dell’aria interna. La capacità di rimozione dei contaminanti e, parallelamente, la capacità di immettere aria pulita negli ambienti sono espresse dall’efficienza di ventilazione (ventilation effectiveness). Mediante simulazione fluidodinamiche CFD è stato possibile confrontare l’efficienza di rimozione dei contaminanti utilizzando diverse soluzioni di ventilazione a dislocamento piuttosto che soluzioni tradizionali a miscelazione. La qualità di un ambiente interno andrebbe misurata in termini sia di comfort termico garantito all’occupante che di qualità dell’aria. Attraverso prove sperimentali in laboratorio, i principali indici di comfort termico e di efficienza di ventilazione sono stati determinati per diverse configurazioni di ventilazione a miscelazione e di ventilazione a dislocamento in ambienti rappresentativi di applicazioni residenziali o del terziario. I risultati sono stati in seguito utilizzati per effettuare una validazione di un modello fluidodinamico (CFD) creato per la previsione del movimento dell’aria in ambienti residenziali o uffici.
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Rettkowski, Elisabeth. "The Abyss of the Past : A Freudian Reading of Mo Hayder's The Devil of Nanking". Thesis, Linnéuniversitetet, Institutionen för språk och litteratur, SOL, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-16874.
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The aim of this bachelor's thesis is to submit the character of Grey in Mo Hayder's novel, The Devil of Nanking to a Freudian reading with focus on repression and trauma and their impact on sexual development and obsessive behavior. The analysis of to what extent Grey's past and present experiences form the cornerstone to her mental and sexual development including repression and obsession will be based on Sigmund Freud's psychoanalytic theories. The claim is that Grey's obsessiveness and sexuality can be explained and seen in terms of a Freudian view of trauma resulting in repression.
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Uzukwu, Elochukwu Eugene. "Book Review: Joe Egan, "From Misery to Hope: Encountering God in the Abyss of Suffering"". Bulletin of Ecumenical Theology, 2011. http://digital.library.duq.edu/u?/bet,278.
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Uzukwu, Elochukwu Eugene. "Book Review: Joe Egan, "From Misery to Hope: Encountering God in the Abyss of Suffering"". Bulletin of Ecumenical Theology, 2013. http://digital.library.duq.edu/u?/bet,1179.
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Horne, Larissa O. "On the brink of the abyss, the German focus of Russian official ideology, 1890-1914". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq37549.pdf.
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Collins, Ryan H. "Transistion through the abyss: archaeological interpretations of the iconographic raised-heel in classic Maya sculpture". Honors in the Major Thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1248.
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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.Bachelors
Sciences
Anthropology
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Addo, Mary Aku. "The unseen abyss : registered nurses' experience in working with sex offenders : a hermeneutic phenomenological study". Thesis, University of Aberdeen, 2006. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=167846.
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This thesis reports a study that aimed to generate a description and (an understanding) of registered nurses’ experiences in working with sex offenders in two high secure settings in the United Kingdom (UK). Nurses, it is argued, play a pivotal role in the rehabilitation of sex offenders (Scheela 1997). Faced with the responsibility for working with sex offenders, nurses encounter a challenging task (Addo 2002). Sexual offence is an emotive subject that engenders many prejudices and blind spots (Prins 1986; O’Rourke 1997). Little evidence exists in the nursing literature regarding this topic in the UK context. This study set out to address this gap. The methodological approach used is that of hermeneutic and phenomenology (Gadamer 1976). A purposeful sample of nine trained nurses working with sex offenders in two high secure settings in the UK participated. Data were collected by in-depth tape-recorded interviews in the participants’ place of work, and analysed using an interpretive approach. The central finding in the present study suggests that the nurses experienced a complex interplay of personal and professional difficulties, and emotional reactions in working with the sex offenders that goes beyond their professional life. This includes Entering the Job, Engaging with Clients; Naivety; Work Environment; Dilemmas; Stress; Personality Change; Feeling Unsupported; Gender Vulnerability; Survival Strategies and Job Rewards. The findings illuminate the impact of these on the realities of the nurse’s work with sex offenders which are described as “The Unseen Abyss- walking into the dark”. It is concluded that the nurses’ narratives provide a thick, rich and meaningful insight into their work with sex offenders, and their need for effective specialist education, supervision and support for such practice. It is recommended that further research is undertaken to examine issues raised in this study, in order to devise and evaluate methods for achieving this preparation for nurses, and the effective provision of support systems to safeguard their practice and occupational health.
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Owens, Lewis. "Creative destruction : Nikos Kazantzakis, the abyss of rebirth and the transitional age to authentic existence". Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621684.
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Akbarian, Shaida Shaida. "The Thirst of the World: Blackness and Ontology Between Earthly Sovereignty and the Oceanic Abyss". The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1619134492233873.
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Kan, Tabitha G. "Renderings of the abyss : some changing nineteenth-century literary perceptions of the animal/human divide". Thesis, University of Essex, 2016. http://repository.essex.ac.uk/19458/.
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The aim of this thesis is to amalgamate philosophy and history of science with literature to achieve an overview of changing ideas of the animal/human divide during the nineteenth century. Drawing on the ideas of Jacques Derrida, Friedrich Nietzsche, Julia Kristeva and Giorgio Agamben. I consider this divide and its contents, often regarded as an abyss. The study is written like a time line, starting at the beginning of the nineteenth century and finishing at the end. I split the nineteenth century into four time periods centred around the emergence of Darwinian theory, considered by this study to be the single most prolific scientific event to have occurred during the nineteenth century. These time frames are the pre-Darwinian, the early Darwinian, the late Darwinian and the post-Darwinian. The study is split into four chapters which coincide with these time frames, covering four different novels which exemplify contextually relevant ideas of the abyss. These are Frankenstein by Mary Shelley, Moby-Dick by Herman Melville, Crime and Punishment by Fyodor Dostoevsky and The Island of Doctor Moreau by H.G. Wells. During the course of this study I consider various ideas applied by the authors about the abyssal limits and what they consist of. These include considerations on reason, society, morality and spirituality, all ideas used in various different manners to attempt to explain the abyss. From these various deliberations I formulate a conclusion which takes into account the various nuances which would have effected each of the writer’s formulations of the abyss.
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Clark, Craig. "Use of hybrid ventilation techniques for improved energy efficiency of fan systems". Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33962.
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The goal of this thesis was to improve the energy efficiency of building ventilation systems by exploring new methods of applying natural ventilation concepts. Strictly natural systems have limitations in which climates they can function or can provide optimal performance; these limitations lead to the use of mechanical or hybrid ventilation. This study looked at methods of combining the operation of the systems, such that the natural components improve the efficiency of the mechanical system.
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Booth, Derrick W. "An evaluation of industrial ventilation troubleshooting methods /". Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/10105.
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Hermand, Eric. "Contrôle ventilatoire à l'exercice et en hypoxie : mise en évidence d'une périodicité constitutionnelle". Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCD037/document.
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L’instabilité de la ventilation est un phénomène connu chez l’homme. Elle était jusqu’à présent observée chez l’homme sain en altitude et chez les patients souffrant d’insuffisance cardiaque (IC) et de syndrome d’apnées du sommeil (SAS), d’origine centrale, obstructive ou mixte, le plus souvent pendant le sommeil. Une analyse spectrale rétrospective de tests d’effort en hypoxie a mis à jour une instabilité ventilatoire lorsque le système de contrôle de la ventilation est soumis à une double contrainte, physiologique (exercice modéré) et environnemental (hypoxie simulant une altitude de 2000 à 4800 m d’altitude). Des protocoles prospectifs ont corrélé positivement l’amplitude de ces oscillations de la ventilation au débit cardiaque (Q̇c) et au niveau de ventilation (V̇E), tandis que la période est raccourcie lorsque V̇E et Q̇c augmentent. À l’opposé d’une période des apnées d’environ 1 minute chez les patients IC et SAS, nos observations ont permis de mesurer la période des oscillations ventilatoires à l’exercice et en hypoxie entre 11 et 12 secondes. Les sujets montrant une plus forte réponse ventilatoire à l’hypoxie et une sensibilité plus élevée au CO₂ exhibent une plus grande instabilité ventilatoire. L’hyperoxie et l’hypercapnie ont des effets opposés : alors que l’inhalation d’O₂ ne modifie pas la stabilité du système (vs normoxie), l’hypercapnie hyperoxique exacerbe le phénomène oscillatoire. Un traitement pharmacologique par acétazolamide (ACZ) améliore la stabilité ventilatoire, appuyant ainsi, en regard des données précédentes, le rôle central des chémorécepteurs périphériques dans la survenue des oscillations de la ventilation. Un modèle mathématique du contrôle de la ventilation intégrant, parmi de nombreux paramètres cardiorespiratoires, les sensibilités à l’O₂ et au CO₂, et les interactions périphérique-central, confirme l’implication du niveau d’hypoxie et du délai de convection sanguine entre les poumons et les chémorécepteurs périphériques dans la période des oscillations. Il souligne également le rôle potentiel de l’espace mort dans la survenue de l’instabilité respiratoireBreathing instability is a well-known phenomenon in human. Until now, it was observed in healthy subjects at altitude et in patients suffering from chronic heart failure (CHF) or sleep apnea syndrome (SAS), central, obstructive or mixed, mostly during sleep. A retrospective spectral analysis of standard hypoxic exercise test evidenced a ventilatory instability when the control system is submitted to a double stress, physiological (moderate exercise) and environmental (hypoxia, from 2000 to 4800m simulated altitudes). Prospective analyses positively correlated magnitude of the ventilatory oscillations to cardiac output (Q̇c) and ventilation (V̇E), whereas their period is shortened with increasing V̇E and Q̇c. Unlike the one-minute period apneas in CHF and SAS patients, we observed a much shorter period at exercise in hypoxia, between 11 and 12 seconds. Subjects with a higher ventilatory response to hypoxia and a greater sensitivity to CO₂ showed a deeper breathing instability. Hyperoxia and hypercapnia have opposite effects : O₂ inhalation does not alter the system stability, hypercapnia enhances the oscillatory phenomenon. A pharmacological treatment by acetazolamide (ACZ) improves breathing stability, supporting a major role of peripheral chemoreceptors in the genesis of ventilatory oscillations. A mathematical model of ventilation control including, among numerous cardiorespiratory parameters, sensibilities to O₂ and CO₂, peripheral-central interactions, confirms the contribution of hypoxia level and the delay of blood convection between lungs and peripheral chemoreceptors in the oscillations period. It also highlights a potential role of dead space in the onset of breathing instability
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Chowdhury, Patrik. "Aspekter som avgör anestesisjuksköterskans val av peroperativ ventilation vid bukkirurgi, volym eller tryckkontrollerad ventilation?" Thesis, University of Gävle, Ämnesavdelningen för vårdvetenskap, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-4864.
Texto completoResumen
Bakgrund. Enligt den nya kompetensbeskrivningen för anestesisjuksköterskor framgår bland annat att anestesisjuksköterskan ska ha kompetens att övervaka och följa upp ventilation och cirkulation hos sina patienter. Det har länge varit vanligt att använda volymkontrollerad ventilation (VCV) till patienter som genomgår bukkirurgi. Nu finns det ett annat alternativ, tryckkontrollerad ventilation (PCV). Det är ett omdiskuterat ämne huruvida det mer traditionella VCV eller det senare PCV ska tillämpas på patienter som genomgår bukkirurgi. Syfte. Syftet med denna studie var att beskriva de aspekter som avgör anestesisjuksköterskans val av ventilationsmode vid bukkirurgi. Metod. Studien har en deskriptiv design med en kvalitativ ansats. Tio anestesisjuksköterskor fick svara på en frågeguide. Frågeguiden var konstruerad med öppna frågor. Svaren analyserades utifrån ett innehållsanalytiskt perspektiv. Resultat. Svaren på frågeguiden redovisas utifrån följande subkategorier: patientens bakgrund, operationsberoende aspekter, operationens förlopp, patient instabilitet, utbildning samt patientsäkerhet. Diskussion. Det visade sig att det fanns aspekter som påverkade anestesisjuksköterskan inför valet av ventilationsmode så som: patientens ålder, tidigare sjukdomar, operationsteknik samt kunskap om anestesiapparaten.