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Dissertations / Theses on the topic 'Ground Access'
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1
Wong, Jimmy Tsz Kwan 1975. "The use of APTS to improve intermodal passenger transportation, with applications to ground access to airports." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/47424.
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Horowitz, Daniel Austin 1978. "Ground access to domestic airports : the creation of a federal program to streamline enhancement and modernization projects." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/16917.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2003.Includes bibliographical references (p. 103-106).
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
With few exceptions, airport ground access tends to be an issue that is overlooked by airlines, airport operators, and metropolitan planning organizations. Given the current structure of federal aviation and surface transportation funding, little incentive is provided for these organizations to develop a comprehensive intermodal outlook towards airport access projects. Given the concurrent reauthorization during the next legislative session of several major pieces of authorizing legislation involving domestic transportation projects, including TEA-21 (surface transportation) and AIR-21 (aviation and airports), it would be the ideal time to implement a program for airport ground access projects that bridges these areas. Under such an intermodal system, a solitary federal office, such as the Office of Intermodalism, would become both a central repository for technical guidance, as well as a central source of regulation and interpretation of federal law. In addition, a mixture of local and federal funds should be used to encourage cooperation between the various entities involved with a ground access project, such as the airport owner/operator, regional transit operator, metropolitan planning organization, and the state highway authority. The proposed authorizing legislation would allow an airport operator to levy a Passenger Facility Charge (PFC) beyond current regulatory limits, subject to the approval of the Office of Intermodalism. Further, new categorized surface transportation funds would be authorized, which could be used by the Office of Intermodalism as a match to PFC funding. The remaining funding would be provided by local sources.
by Daniel Austin Horowitz.
S.M.
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Tran, Anthony. "Piracy on the Ground: How Informal Media Distribution and Access Influences Cultures in Contemporary Hanoi, Viet Nam." Thesis, University of North Texas, 2012. https://digital.library.unt.edu/ark:/67531/metadc149675/.
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This thesis explores how pirate cultures and “informal” distribution circuits operate on the ground level and integrate global media texts (mainly Hollywood films) into a small section of the local everyday society of Hanoi, Viet Nam. Situating the pirate stores and its components as active and central, this thesis will examine the physical flow of media through these store sites. In addition, by exploring the interactions between media texts, store owners and workers, customers, and the store’s design itself, this thesis will reveal how media piracy (as a form of distribution and “normal” access) influences and negotiates modernity, cultures, identities, and meanings in Hanoi and Viet Nam.
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Tam, Mei Ling. "Evaluating the demand and service quality of ground access modes and terminal facilities of Hong Kong International Airport." online access from Digital Dissertation Consortium, 2006. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?3252560.
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Sanguinetti, Joseph L., and Mary A. Peterson. "A behavioral task sets an upper bound on the time required to access object memories before object segregation." ASSOC RESEARCH VISION OPHTHALMOLOGY INC, 2016. http://hdl.handle.net/10150/622756.
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Traditional theories of vision assume that object segregation occurs before access to object memories. Yet, behavioral evidence shows that familiar configuration is a prior for segregation, and electrophysiological experiments demonstrate these memories are accessed rapidly. A behavioral index of the speed of access is lacking, however. Here we asked how quickly behavior is influenced by object memories that are accessed in the course of object segregation. We investigated whether access to object memories on the groundside of a border can slow behavior during a rapid categorization task. Participants viewed two silhouettes that depicted a real-world and a novel object. Their task was to saccade toward the real-world object as quickly as possible. Half of the nontarget novel objects were ambiguous in that a portion of a real-world object was suggested, but not consciously perceived, on the groundside of their borders. The rest of the nontargets were unambiguous. We tested whether saccadic reaction times were perturbed by the real-world objects suggested on the groundside of ambiguous novel silhouettes. In Experiments 1 and 2, saccadic reaction times were slowed when nontargets were ambiguous rather than unambiguous. Experiment 2 set an upper limit of 190 ms on the time required for object memories in grounds to influence behavior. Experiment 3 ruled out factors that could have produced longer latencies other than access to object memories. These results provide the first behavioral index of how quickly memories of objects suggested in grounds can influence behavior, placing the upper limit at 190 ms.
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Kerrick, Benjamin Carl. "Borrowed Ground: Evaluating the Potential Role of Usufruct in Neighborhood-Scale Foodsheds." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366380928.
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Kgomotso, Phemo Karen. "Global environmental agreements and local livelihoods : how the internationalisation of environmental resources shapes access to and control over wetland resources in the Okavango Delta, Botswana." Thesis, University of Sussex, 2011. http://sro.sussex.ac.uk/id/eprint/38451/.
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This thesis examines how global environmental crisis narratives and discourses have influenced environmental policy and practice in conservation programmes for the Okavango Delta, Botswana. In particular, it highlights the contested nature of biodiversity conservation and the embedded power relations in the framing, definition and crafting of solutions to the problem of biodiversity degradation at local, national and international levels. The thesis therefore examines, based on these framings, the consequences of global environmental agreements, such as the Ramsar Convention and the UN Convention on Biological Diversity, for local livelihoods in terms of access to and control over local environmental resources in the Okavango Delta. Using a political ecological conceptual lens and related literature on common pool resource management and community-based natural resource management, this thesis traces the changing perceptions, narratives and discourses relating to the Okavango Delta over time, and assesses how these have shaped changes in policy for the Delta's use and management. It specifically analyses the implementation of international programmes and their role in facilitating these changes. Through an in-depth study of dynamic human-environment interactions around fisheries and other wetland resources, this thesis shows how international interventions have not only increased conflicts but also facilitated the strict regulation of these resources. The thesis therefore analyses how framing these and other common pool resources as being of ‘international significance' alters control over them and affects the livelihood security of the local people that depend on these resources. It concludes that such restrictive conservation policies and management approaches have led to a transfer of control over wetland resources from local subsistence users to other, more powerful, commercial interests, especially those in the international tourism industry.
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Liston, John Anthony. "Identification and analysis of common ground between legal and economic perspectives which drive negotiation of land access arrangements between Traditional Owners and mining companies, in Australia." Thesis, University of Dundee, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505597.
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Herold, Fredrick W. "Total Border Security Surveillance." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/605061.
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International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, CaliforniaThis paper describes a system of Total Border Surveillance, which is cost effective, closes existing gaps and is less manpower intensive than the current techniques. The system utilizes a fleet of commercially available aircraft converted to unmanned capability, existing GPS and surveillance systems and autonomous ground stations to provide the desired coverage.
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Hořáková, Alžběta. "Hotel." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240342.
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The topic of this Diploma thesis is the project documentation of the new hotel building in Moravany u Brna. Hotel is designed as a detached building with 3 floors. In the first floor you can find an entrance hall, administrative part, restaurant and its background and the technical background. Another floors serve as accommodation for the guests. The building is designed with traditional building materials.
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Ćmielová, Petra. "Hotel." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409982.
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Diploma thesis deals with the design documentation of hotel building in the village of Dolní Lomná. The aim of the work was to create a unit that will be used for accommodation and catering of the guests and will not disturb the surroundings. The building was designed as a three-storey building. The hotel is devided to an operational part for staff, catering and accommodation for guests. The capacity of the beds is 32. The hotel is designed as a brick construction system. Roofing is as a saddle roof made of wooden truss above the 3rd floor. The thesis is divided into two parts. The first part contains the textual evaluation of the construction of the hotel, the second part consists of the project documentation itself. The project documentation includes architectural and layout design, drawing up of building drawings, design of a fire safety solution of the building, basic thermal technical assessment.
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Young, McGee Wester Andersen Kristi. "Achieving access groups, processes, and American political development /." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2004. http://wwwlib.umi.com/cr/syr/main.
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Wawreczka, Stefan. "Hotel." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265404.
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Diploma thesis deals with the design documentation hotel building in the village of Vendryně. The building is designed in accordance with the existing this area and the slope of the terrain. This is a two-tier four-storey building. Above the 1st floor is designed flat vegetation roof and above the 4th floor is gabled roof. The building contains part of the accommodation, dining area and facilities for staff. Work includes architectural and layout design, preparation of construction drawings, design of fire safety design of buildings, basic thermal technical assessment and calculation of a selected wooden truss and a draft air exchange for restaurants and kitchens. The entire work will be complemented by a text part.
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Ageron, Pierre. "L'intermodalité-voyageurs au prisme de la mondialisation : vers la structuration d'un méta-réseau intégré." Phd thesis, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00921666.
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La mondialisation induit l'émergence du monde comme échelle désormais pertinente pour l'analyse de mobilités en croissance. L'intermodalité-voyageurs entendue comme un système actoriel favorisant les déplacements transcalaires, devient alors l'outil majeur d'un possible changement d'analyse des mobilités. La juxtaposition de réseaux monomodaux fait place à un méta-réseau déployant des interfaces multiples entre petites et grandes échelles. Ce travail à l'échelle mondiale se concentre sur les manifestations intermodales liées à l'accessibilité aéroportuaire. En effet, les aéroports, joignant la petite échelle, le monde, à la grande échelle (la ville, la région ou le quartier), concentrent les enjeux de la mise en place d'un réseau intermodal intégré, érigé en système. Centré sur les plates-formes aéroportuaires dotées du statut de gateway et se déployant uniformément à l'échelle mondiale, ce nouveau méta-réseau ne se concrétise pas. Il apparaît encore largement fragmenté, dominé par des dynamiques d'échelles régionales ou supra-nationales, marquées par une intégration plus ou moins avancée des réseaux-supports et des réseaux-services. L'émergence de tels réseaux provient d'une même matrice : l'imitation (Europe, Amériques) voire le perfectionnement (Asie Orientale), plus ou moins assumés et selon des conditions diverses, du modèle pionnier rhénan. Trois facteurs principaux expliquent la force de ce modèle. Au fondement de son efficacité pratique apparaît le principe de transcalarité, définie comme la capacité des utilisateurs à profiter de toute la capillarité des réseaux. Ce modèle s'appuie également sur une approche systémique et territoriale, favorisant les interactions entre acteurs. Ceux-ci envisagent globalement les besoins du client et l'ensemble de son cheminement. Ce changement d'attitude est rendu possible par l'introduction des règles du marché, troisième facteur de ce modèle. Dès lors, l'intermodalité-voyageurs s'inscrit dans des stratégies de promotion territoriale au sein d'une mondialisation compétitive et inter-métropolitaine. Considérée alors comme un produit, elle génère des interdépendances entre acteurs. La gestion optimale de ces interdépendances fait le succès du système intermodal. Cette recherche met ainsi en évidence la complexité de l'objet intermodalité-voyageurs, à la confluence d'une triple dynamique de mondialité : rétistique et servicielle, discursive et iconique et enfin capitalistique par les firmes. L'intermodalité-voyageurs permet enfin de réfléchir à des concepts-clés de la géographie et des sciences sociales : le lieu, l'individu, le monde.
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Andersson, Kent-Inge. "Developing a theory of open access : a grounded theory based literature review." Thesis, Högskolan i Borås, Akademin för bibliotek, information, pedagogik och IT, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-10864.
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The thesis presents a conceptual literature review of the subject of open access as it is reflected in literature relevant to digital library research. An approach to the grounded theory method specifically created for the purpose of performing a literature review is applied to 70 articles and conference proceedings found in the databases LISA and LISTA. Through the coding of the literature five categories that conceptually order the subject of open access emerged; Open Access, Authors, Scholarly Communication, Libraries and Librarians, and Developing and Transitional Countries. The conceptual relations of the categories are discussed in the presentation of the categories. The emerged theory is then validated through a review of earlier literature, which focused on literature reviews on open access. A model of the emerged theory with explanatory narratives are then presented in the concluding chapter.
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Blaha, Jan. "Hotel v Přerově." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227522.
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The diploma thesis deals with a project documentation of hotel building in Přerov. The object is designed as a detached building with one basement and four floors. There is an underground garage and technical rooms of the hotel situated in the basement. In the first floor, there are entrance hall, administrative part, restaurant and its hinterland. Another ground floors are designed to accommodate guests. The structural system is reinforced concrete skeleton. The perimeter wall is building from clay bricks. The object is covered with two flat roofs.
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Groh, Ondřej. "Bytový dům." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227744.
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The master’s thesis deals with the project documentation of a flat building with sweet-shop in Brno - Štýřice. The object is designed as a detached building without basement with four floors. Floor plan of the building is L-shaped, fitted into the equal terrain. In the first floor is a sweet-shop, cellar, stroller storage, waste storage and two flat units. In the other floors are flat units. The structural system is bricks, two-way. The building is covered with a flat roof.
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Watters, Charles. "Asians and psychiatric services in Britain : avenues of access and parameters of treatment." Thesis, University of Sussex, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308888.
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Alves, Bianca Bianchi. "O comportamento de viagens de acesso a aeroportos considerando a confiabilidade do tempo de viagem." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/3/3138/tde-19032015-153303/.
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A confiabilidade do tempo de viagem é atualmente considerada como um fator de elevada importância nos estudos de demanda por transportes, com base no reconhecimento que sistemas congestionados são uma realidade inevitável nos grandes centros urbanos, gerando incertezas nas estimativas do tempo de viagem e tornando sua representação através de uma variável de tempo médio excessivamente simplista. O acesso terrestre aos aeroportos em São Paulo constitui um contexto interessante para o estudo da confiabilidade, considerando os altos custos atribuídos à eventual perda do voo e o ambiente de alta variabilidade de tempos de viagem na região. O estudo da confiabilidade do tempo de viagem tem sido em geral desenvolvido com um enfoque exclusivamente quantitativo, usando modelos matemáticos que se baseiam em teorias de maximização da utilidade estimados a partir de dados de preferência declarada. Em geral, são ignorados: (i) os efeitos de fatores latentes no comportamento, (ii) o fato de que o comportamento nem sempre reflete as intenções, (iii) a complexidade dos fatores envolvidos nas escolhas e (iv) os fatores que descrevem o contexto em que ocorre a decisão. O trabalho utiliza métodos mistos para a coleta e análise dos dados, procurando obter um conjunto abrangente de informações sobre o comportamento. Tanto a coleta de dados como os modelos estimados baseiam-se nos fundamentos da Teoria do Comportamento Planejado, que afirma que o comportamento revelado pode ser estimado a partir de uma intenção que, por sua vez, pode ser estimada a partir de atitudes, normas subjetivas e controle percebido. O controle percebido representa a percepção individual quanto à facilidade em desempenhar um comportamento. Neste estudo, a confiabilidade do tempo de viagem é incluída como um fator de controle percebido, assim como outros indicadores de controle não comumente considerados. A análise é conduzida usando-se uma técnica de Modelos de Equações Estruturais denominada Mínimos Quadrados Parciais. O uso desta técnica permitiu uma descrição abrangente dos mecanismos envolvidos no processo de escolha de acesso terrestre ao aeroporto e confirmou a importância dos fatores latentes na escolha, particularmente os relacionados ao controle percebido e real. Foi possível também verificar que conjuntos distintos de fatores influenciam a formação da intenção (e portanto a preferência declarada) e o comportamento propriamente dito (e portanto o comportamento revelado).Travel time reliability is now considered a major factor in explaining travel demand since its underlying cause congestion seems to be an unavoidable reality in large urban centers. This brings uncertainty to travel time estimates, rendering its representation through travel time averages excessively simplistic. Ground access to airports serving the city of São Paulo makes an interesting context to study reliability, given the considerable annoyance and cost associated with the possibility of missing a flight and the high variability of travel times prevailing in the area. Studies of the reliability of travel time have generally been based on a purely quantitative approach, using utility-based mathematical models, mostly estimated with stated preference data. They usually ignore: (i) the effects of latent factors on behavior, (ii) the fact that behavior does not always reflect intentions, (iii) the complexity of factors involved in choice processes and (iv) the factors describing the choice context. This study uses mixed methods for data collection and analysis, aiming to gather a comprehensive set of information about behavior. Both data collection and modeling are based on the Theory of Planned Behavior, which states that behavior can be predicted from intention; intention, by its turn, can be predicted from attitudes, subjective norms and perceived behavioral control. The latter refers to peoples perception of the ease or difficulty of performing the behavior of interest. In this study, we include travel time reliability as a perceived behavioral control factor, in addition to other indicators of control that are not commonly considered. Analysis is conducted using Partial Least Squares, a technique from the family of Structural Equations Models. The use of this technique allowed for a more complete description of the mechanisms involved in the choice process of ground access to airports and confirmed the importance of latent factors on choice, particularly those related to perceived and actual control. The results also indicate that different sets of factors affect the formation of intention (and thus the stated choice) and the behavior itself (and thus actual behavior).
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Baron, Pierre. "Contribution à l'étude anatomo-fonctionnelle du groupe musculaire ptérygoïdien chez quelques mammifères." Paris 5, 1990. https://eu.alma.exlibrisgroup.com/view/uresolver/33UAG_INST/openurl?u.ignore_date_coverage=true&portfolio_pid=53117410340005746&Force_direct=true.
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Xu, Junwei Xu. "Wi-Fi Direct Multi-Group Communication: Connect different Wi-Fi Direct groups with Access Point." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1511994424634554.
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Sesay, Sanie. "The evaluation of easy access groups as a tool for malaria surveillance in Chikhwawa, Malawi." Thesis, University of Liverpool, 2014. http://livrepository.liverpool.ac.uk/2009108/.
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Underhill, Les, and Dave Bradfield. "INTROSTAT (Statistics textbook)." Thesis, University of Cape Town, 2013. https://vula.uct.ac.za/access/content/group/23066897-bf3d-4a8d-9637-049c04424e24/IntroStat-%20Dr%20Underhill/.
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IntroStat was designed to meet the needs of students, primarily those in business, commerce and management, for a course in applied statistics. IntroSTAT is designed as a lecture-book. One of the aims is to maximize the time spent in explaining concepts and doing examples. The book is commonly used as part of first year courses into Statistics.
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Qazi, Hasham Ud Din. "Comparative Study of Network Access Control Technologies." Thesis, Linköping University, Department of Computer and Information Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8971.
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This thesis presents a comparative study of four Network Access Control (NAC) technologies; Trusted Network Connect by the Trusted Computing group, Juniper Networks, Inc.’s Unified Access Control, Microsoft Corp.’s Network Access Protection, and Cisco Systems Inc.’s Network Admission Control. NAC is a vision, which utilizes existing solutions and new technologies to provide assurance that any device connecting to a network policy domain is authenticated and is subject to the network’s policy enforcement. Non-compliant devices are isolated until they have been brought back to a complaint status. We compare the NAC technologies in terms of architectural and functional features they provide.
There is a race of NAC solutions in the marketplace, each claiming their own definition and terminology, making it difficult for customers to adopt such a solution, resulting in much uncertainty. The NAC paradigm can be classified into two categories: the first category embraces open standards; the second follows proprietary standards. By selecting these architectures, we cover a representative set of proprietary and open standards-based NAC technologies.
This study concludes that there is a great need for standardization and interoperability of NAC components and that the four major solution proposals that we studied fall short of the desired interoperability. With standards, customers have the choice to adopt solution components from different vendors, selecting, what is commonly referred to as the best of breed. One example for a standard technology that all four NAC technologies that we studied did adopt is the IEEE’s 802.1X port-based access control technology. It is used to control endpoint device access to the network.
One shortcoming that most NAC architectures (with the exception of Trusted Network Connect) have in common, is the lack of a strong root-of-trust. Without it, clients’ compliance measurements cannot be trusted by the policy server whose task is to assess each client’s policy compliance.
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Conocimiento, Dirección de Gestión del. "Guía de acceso para Best Practice." BMJ Publishing Group, 2021. http://hdl.handle.net/10757/655266.
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Demirdögen, İbrahim. "Comparison and Improvement of Different Access Methods in Femtocell Networks." Scholar Commons, 2010. https://scholarcommons.usf.edu/etd/1612.
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A variety of wide band wireless systems have been pushed towards their limits in order to meet growing interest for high data rate in wireless communications.In particular, the limit due to the spectrum scarcity forces communication systems to utilize the spectrum resource at maximum efficiency level. One of the methods that allow effective spectrum employing is to cover multiple systems over same spectrum source by allowing bearable interference to occur between them. Femtocells have been recently introduced as a remedy to spectrum scarcity and coverage problems in current cellular structures. Femtocells are personal use base stations and they share the spectrum in a way that they can coexist with the macrocell. This thesis provides a critical reviews of different access methods in femtocell networks and further introduces improvements related to these access methods. Simulation results validate capacity improvement of proposed techniques compared to the existing access methods.
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Fisk, Gemma. "A grounded theory approach exploring men's access to IAPT services and accounts of psychological help seeking." Thesis, University of Surrey, 2013. http://epubs.surrey.ac.uk/813029/.
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Background: Men are considered to be reluctant to seek help for their psychological distress, with men within the age ranges of 35 to 49 years old considered to be particularly vulnerable in tenns of their mental health (Her Majesty's Government, 2011; Moller-Leimkuhler, 2002). To date research has largely focused on trying to understand men's reluctance to utilise mental health services, resulting in a paucity of research exploring what men do to cope with psychological distress instead of accessing mental health services alongside how men overcome barriers to psychological help-seeking. This research aimed to explore the accounts of psychological distress and the pathways into IAPT services for men between the ages of35 to 49 years old. Method: Men within the age ranges of 35 years to 49 years who had been referred to an IAPT service were the target population. In-depth semi-structured interviews conducted with 11 men, obtained detailed narratives of episodes of mental distress and accounts of psychological help-seeking. An abbreviated version of GroW1ded Theory was adopted using the framework provided by Channaz (2006). Results: Stigma and endorsement of masculinity scripts informed the men's decisions at various stages of the pathway into psychological help-seeking and engaging with help-receipt. Disparaging or encouraging commentary from within social support networks played an important part in psychological help-seeking. The men's perception of the severity of their mental health symptoms alongside their perception of the risks of not seeking psychological help impacted on whether psychological help-seeking was initiated. GP communication style was highlighted as important in determining whether the men's mental health problems were recognised. Contribution to the Field: This research bridges an important gap in understanding how masculinity scripts, stigma and social support networks inform men's decision making around psychological help-seeking. This' research provides a tentative conceptual framework which outlines how men between the ages of 35 and 49 years old come to engage in psychological help-seeking, Clinical and research implications raised by this research are discussed.
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Stjernquist, Desatnik Marie. "Energy Access for the Most Vulnerable Groups : A Study on the Long-Term Effects of Energy Access in a Refugee Camp Context with Inclusion of the Host Community." Thesis, KTH, Energiteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-256230.
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The UN 2030 Agenda for Sustainable Development outlines 17 goals to end poverty and ensure the right to development for everyone. Previous research has found that 2/3 of the goals partly depend their success upon whether SDG 7 Ensure access to sustainable, affordable and modern energy for all is achieved or not. Given that the Agenda targets everyone it cannot be achieved without reaching the most vulnerable groups, among these groups are migrants, refugees and those internally displaced. Low- and middle-income countries host 84% of this group. Almost 30% of refugees live in managed camp settings and it has been estimated that 80% of these have minimal or no access to electricity. For cooking needs a majority depend on traditional cooking with firewood and charcoal. In many cases this spurs tensions and at times conflict with the local host community, -who often also heavily depend on this resource. On the national level energy is often seen as part of the long-term development planning and as refugee camps and humanitarian setting are recognized as temporary by the host country this creates a vacuum. However, the reality is that 2/3 of all refugees are in protracted refugee situations and the average lifespan of a camp is 17 years. This thesis studied the links between energy and the nexus of environment, social stability and economy in a refugee camp context, and outlined how different energy systems could impact the situations for both groups and also for the relationship between these groups. This was done using the Long-range Energy Alternative Planning systems (LEAP) and by creating a Multi Criteria Analysis template. The case study of Kakuma camp in Turkana County in the North of Kenya was used. The results showed that there are positive and negative aspects related to all energy systems studied here (for household energy access both for electricity and cooking). A refugee camp is a highly complex setting, operating both under the authority of local actors and of international humanitarian actors. For electricity access, Solar Home Systems was found to be a good choice due to the fast deployment time and the low level of infrastructure needed. For already existing households PV Hybrid mini-grids are to be recommended. For cooking options, it was found that for Turkana county, rather than just focusing on GHG emissions it is vital to mitigate deforestation seeing the county’s vulnerability to land-use change. However, changing from firewood and charcoal would affect the livelihood of the host community who depends on the income deriving from the charcoal business. This highlights some of the complexity of the study and the importance of knowing the local context before carrying out energy interventions in a refugee camp and surrounding area. The author’s conclusion is that this methodology could be implemented on any camp setting seeing that modern and clean energy access poses many benefits to people across the world, whether in an urban, rural or refugee camp setting. The thesis found that the main barriers identified for electricity projects of scale are the current funding structure of humanitarian organizations and national government’s attitude towards the camp.
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Igbinigie, Itohan. "A study of a local strategy to increase access to initial teacher education for minority ethnic groups." Thesis, Lancaster University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397049.
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Amaya, Orellana Manuel. "Ejido land : how low-income groups gain access to urban land a case study of Tegucigalpa, Honduras." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/76394.
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Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1985.MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCH.
Bibliography: leaves 52-57.
by Manuel Amaya Orellana.
M.C.P.
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Walsh-Felz, Aria Anna. "(Not) Everything is Good and Easy: Language-related Healthcare Experiences of Two Groups of Low-income Latina Mothers." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6776.
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This cross-sectional, comparative, qualitative study explored language-related issues experienced by low-income Spanish-speaking mothers navigating pediatric care for their children in Hillsborough County, Florida. Hospitals, pediatric clinics, specialists, and dental care have differing degrees of linguistic accessibility and accommodations for limited English proficient families. Two groups of mothers were interviewed: bilingual (n=9) and Spanish-speaking limited-English proficient (SSLEP) mothers (n=21). These groups perceived the effect of language on navigating pediatric healthcare differently, creating tension in perceptions and experience between them. Such tensions included SSLEP mothers expressing satisfaction with pediatric care simultaneously with shortcomings in communication. SSLEP mothers said that everything was easy, at the same time stating that navigating healthcare, and other aspects of their family life would be far easier if they spoke English. SSLEP expressions of self-sufficiency were countered by bilingual mothers who provided language support to SSLEP family members, friends, and strangers. This research points toward the need for consistent language services in healthcare settings as well as facilitation of effective English language acquisition opportunities for families.
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Conocimiento, Dirección de Gestión del. "Guía de acceso para Tourism Planning & Development." Taylor & Francis Group, 2021. http://hdl.handle.net/10757/655395.
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Laditka, James Nicholas. "Health outcome disparities associated with access to primary care for vulnerable groups: Hospitalization for ambulatory care sensitive conditions." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2002. http://wwwlib.umi.com/cr/syr/main.
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Mathekga, Abbey Mokwape. "Towards widening access to underrepresented groups in the biological sciences : a case study of the University of Pretoria." Thesis, University of Pretoria, 2012. http://hdl.handle.net/2263/24039.
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Since the dawn of democracy in South Africa, significant progress has been made with regards to access to higher education. However, widening participation to under-represented groups in science and technology fields, with special reference to Biological Sciences, still remains a challenge. Despite the growing number of black students in this programme, there is still a substantial gap in terms of the enrolment numbers of student from this racial group in the Biological Sciences. This research is a case study carried out in the faculty of Natural and Agricultural Sciences at the University of Pretoria, which is a historically white institution with a strong Afrikaans culture. The study used Osborne and Gallacher’s (2004) framework of getting in and getting through to explore access policy at this institution in relation to widening participation in Biological Sciences. The findings showed that, while there has been progress with regards to physical and epistemological access, getting in to Biological Sciences still proves difficult to attain, especially for black male students from under-represented groups, including those from township and rural areas. The challenges related to getting in are compounded by various factors. These include inadequate preparation of learners for university studies such as limited preparation for natural science studies, limited exposure to science laboratories, inadequate career guidance resulting in wrong subject mix, late submission of application forms and the ‘walk–in’ phenomenon. Funding is crucial for facilitating access to Biological Sciences but it is hard to come by and insufficient for students from low socioeconomic groups. The government initiated funding have potential to help needy students with talent but it is not sufficient to cover both tuition and residence fees. In addition to the financial assistance that the university offers, it also provides a strong academic and psychosocial support to students, particularly in first year in Biological Sciences. Both academic and psychosocial support are factors enabling access and widening participation in Biological Sciences. They also underpin getting through. However, students in residences tend to benefit more from these support initiatives.Thesis (PhD)--University of Pretoria, 2012.
Education Management and Policy Studies
unrestricted
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Limba, Edwin Mandlakayise. "Barriers Access to Housing Finance by the Low-Income Groups: National Housing Finance Corporation (NHFC) in South Africa." Master's thesis, Faculty of Commerce, 2019. http://hdl.handle.net/11427/30468.
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South Africa (SA) has been experiencing a serious challenge in terms of addressing housing problems and one of the factors is access to finance, mainly by the lower income earners. Government programmes like Financial Linked Individual Subsidy Programme (FLISP) that work through the National Housing Finance Corporation (NHFC) to provide affordable subsidy finance for housing to households who earn in the range of R3 501 and R15 000 do not make a significant impact necessary to improve access to affordable housing finance. The NHFC has approved and disbursed few and low amounts for FLISP hence questions have been raised as to the challenges that low-income earners experience when accessing affordable housing finance through the NHFC and its role in creating human settlements that is sustainable. The objective is therefore to undertake a descriptive and exploratory study of the FLISP program to enhance understanding of the effectiveness of NHFC in provision of affordable housing financing accessibility by the low-income groups in Johannesburg. The sample of participants was drawn from the beneficiaries of loans and NHFC officials using observations, questionnaires and semi structured individual interviews. The mixed research method is adopted using both the primary and secondary to collect data from NHFC and is analysed by means of descriptive statistics such as percentages, tables and frequencies. Data analysis showed that accessibility for housing finance remains an obstacle faced by the low-income households. Convergent mixed method is adopted in the study to understand why the NHFC has been not effective in addressing housing finance for low-income groups. The study found that the major challenges that low-income earners encounter in accessing affordable housing finance range from the deposit amount required, interest rates and affordability in repayments of loans. It is recommended that there should be an enhancement in the housing policy to focus on the low-income groups, also, alternative mechanism such as provision of serviced land and partnerships between government and commercial banks may improve the current conditions.
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Bellafkih, Said. "Exploitation de l'effet électro-calorique pour la réfrigération : optimisation des propriétés des matériaux et des processus associés." Thesis, Littoral, 2020. https://documents.univ-littoral.fr/access/content/group/50b76a52-4e4b-4ade-a198-f84bc4e1bc3c/BULCO/Th%C3%A8ses/UDSMM/These_BELLAFKIH_Said_Definitif.pdf.
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Pour répondre aux enjeux environnementaux (changement climatique, couche d'ozone...) et à l'accroissement des besoins de réfrigération (besoins sanitaires, agro-alimentaire, de confort...), la réfrigération électrocalorique est une alternative prometteuse : elle permet d'éviter l'utilisation des fluides réfrigérants nocifs pour l'environnement employés dans les réfrigérateurs conventionnels. L'effet électrocalorique est la variation de la température d'un matériau polaire suite à l'application ou la suppression d'un champ électrique. Cette thèse avait deux objectifs : le premier était l'élaboration et la caractérisation d'un matériau électrocalorique original, et le deuxième était de concevoir un démonstrateur de réfrigération électrocalorique. Ainsi, un nouveau matériau électrocalorique à base de titanate de baryum dopé par du samarium avec différents taux de concentration a été élaboré et ses propriétés microstructurales, thermiques, diélectriques et ferroélectriques ont été caractérisées. L'effet du taux de concentration en samarium dans les sites A de la structure pérovskite du BaTiO3 sur la température de transition ferroélectrique/paraélectrique a pu être mis en évidence. L'étude des propriétés électrocaloriques en fonction de la température et de l'intensité du champ électrique a été réalisée par mesure directe du flux de chaleur électrocalorique généré ou absorbé suite à l'application ou la suppression du champ électrique. Nous avons utilisé pour cela un calorimètre adiabatique développé au sein du laboratoire et adapté à l'étude de l'effet électrocalorique. Cette étude préliminaire a permis de mettre en évidence un effet électrocalorique même pour des champs faibles et l'influence de la température et de la concentration en samarium sur l'intensité de cet effet. Par ailleurs, un démonstrateur de réfrigération électrocalorique a été mis au point, les premiers résultats obtenus ont permis d'évaluer et de discuter les différentes solutions techniques proposées. Nous avons ainsi pu montrer la faisabilité de l'utilisation de l'effet électrocalorique pour la réfrigération, validant ainsi l'idée de l'exploitation de l'effet électrocalorique comme une solution alternative aux techniques usuelles de réfrigération. De par sa conception, ce démonstrateur peut être envisagé comme un banc d'essai permettant l'optimisation des propriétés des matériaux et des processus associés dans le cadre d'une application de l'effet électrocalorique pour la réfrigérationTo answer to the environmental issues (global warning, pollution), electrocaloric cooling can be considered as a promising approach as an environment friendly alternative to the conventional refrigeration other techniques. It avoids the use of environment harmful refrigerant used in conventional refrigerators. Electrocaloric effect is the charge of temperature of a polar material when an electric field is applied or removed. This thesis had two objectives. Firstly, the elaboration and characterization of an original electrocaloric material, and then the conception of an electrocaloric refrigeration demonstrator device. Thus a new electrocaloric material based on samarium doped barium titanate has been elaborated and its structural, thermal, electrical and ferrolectrical properties have been characterized. The effect of the dopant (samarium) amount on the ferroelectric/paraelectric transition temperature has been confirmed. The characterization of the electrocaloric properties as a function of temperature and electric field intensity have been realized by direct measurement of the isothermal heat flux upon application and removal of the electric field using a homemade calorimeter. Preliminary results showed that an electrocaloric effect can be detected even for low electric field intensity, and evidenced the effect of the temperature and the electric field intensity on the magnitude of the electrocaloric effect. Then an electrocaloric refrigeration device has been developed and built, first results allowing to evaluate the different solutions we have selected for the conception of the demonstrator. They showed that the electrocaloric effect can be used as an alternative to the conventional solutions for the refrigeration. By its conception, the device may also be considered as a testing bench for the optimization of the materials properties and associated process in Electrocaloric refrigeration applications
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Méausoone, Clémence. "Etude en Interface Air-Liquide de la toxicité des Composés Organiques Volatils lors d’expositions répétées : Cas du toluène, de ses homologues et des émissions issues de son traitement catalytique." Thesis, Littoral, 2019. https://documents.univ-littoral.fr/access/content/group/50b76a52-4e4b-4ade-a198-f84bc4e1bc3c/BULCO/Th%C3%A8ses/Toxicologie/these_Meausoone_Clemence.pdf.
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Le toluène est un solvant fréquemment utilisé par l’industrie manufacturière. Il appartient à la catégorie des composés organiques volatils (COV), dont nombre d’entre eux présentent des impacts néfastes sur la santé humaine et sont aujourd’hui classés cancérogènes, mutagènes et/ou reprotoxiques. Afin de diminuer la présence dans l’air de composés nocifs comme le toluène, il apparait essentiel d’envisager leur substitution dans les procédés industriels par des composés moins toxiques et/ou de réduire au maximum leurs émissions à la source. Dans ce contexte, le premier objectif du travail de recherche est d’étudier la toxicité aiguë et répétée du toluène, de ses homologues supérieurs, pouvant être utilisés comme composés de substitution, ainsi que de son homologue inférieur sur des cellules épithéliales bronchiques humaines à l’aide d’un dispositif d’exposition en interface air/liquide. Le deuxième objectif vise à évaluer le caractère toxique d’effluents gazeux issus de la dégradation du toluène par oxydation catalytique. Pour cela, les cellules BEAS-2B ont été exposées 1 heure par jour pendant 1, 3 et 5 jours au benzène, au toluène, au xylène ou au mésitylène, ainsi qu’aux effluents gazeux obtenus après traitement catalytique du toluène. Les effets toxiques ont été évalués au travers des paramètres de cytotoxicité, de réponse inflammatoire et d’expression génique des enzymes de métabolisation des xénobiotiques (EMX). L’exposition des cellules BEAS-2B au toluène et à ses homologues a révélé l’implication de voies métaboliques spécifiques à chaque composé. Une augmentation significative des marqueurs de l’inflammation a également été observée, avec une concentration plus importante pour le benzène et le xylène par rapport aux autres molécules. Concernant l’exposition aux effluents gazeux issus de l’oxydation catalytique du toluène, l’expression tardive de gènes impliqués dans le métabolisme des xénobiotiques organiques aromatiques, est compatible avec la présence de sous-produits, tels que le benzène ou les hydrocarbures aromatiques polycycliques. En conclusion, les résultats obtenus dans ce projet montrent l’intérêt de mener des expositions in vitro en condition répétée permettant de déceler de potentiels effets tardifs et la pertinence de la validation toxicologique des systèmes catalytiques avant leur formulation en pilote industrielToluene is a solvent widely used in manufacturing industries. It belongs to a family of volatile organic compounds (VOCs), many of which have adverse impacts on human health and are classified as carcinogenic, mutagenic or toxic for reproduction. Different measures have been implemented to reduce the emissions of toxic compounds, such as their replacement in the industry by less harmful compounds and/or reducing gas emissions at the source. In this context, the first objective of the research was to investigate the acute toxicity and the one after repeated exposure to toluene and its superior homologous solvents, which can be used as its substitution compounds, as well as its lower homologous on human bronchial epithelial cells using an air/liquid interface exposure device. The second objective was to assess the toxicity of gaseous effluents from the degradation of toluene by catalytic oxidation. For this purpose, BEAS-2B cells were exposed during 1 hour for 1, 3 or 5 days to benzene, toluene, xylene or mesitylene, and to the exhausts of catalytic oxidation of toluene. Toxic effects were evaluated through cytotoxicity, inflammatory response and gene expression of xenobiotic metabolism enzymes (XME). Exposure of BEAS-2B cells to toluene and its homologous compounds revealed the involvement of metabolic pathways specific to each compound. A significant increase in inflammatory marker response was also observed, with a higher concentration after cell exposure to benzene and to xylene compared to the other molecules. With regard to exposure to gaseous effluents from the catalytic oxidation of toluene, the late expression of genes involved in the metabolism of aromatic organic xenobiotics has made possible to highlight the presence of by-products, such as benzene or polycyclic aromatic hydrocarbons. In conclusion, the results obtained in this project show the interest of conducting repeated in vitro exposures to detect potential late effects, and the importance of toxicological validation of catalytic systems before scaling-up in industrial pilots
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Dib, Hadi. "Traitement catalytique des émissions issues de la combustion de la biomasse." Thesis, Littoral, 2019. https://documents.univ-littoral.fr/access/content/group/50b76a52-4e4b-4ade-a198-f84bc4e1bc3c/BULCO/Th%C3%A8ses/Toxicologie/These_DIB_Hadi.pdf.
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La combustion de la biomasse et en particulier du bois constitue une alternative intéressante à l'utilisation des combustibles fossiles pour l'approvisionnement en énergie. Elle présente l'avantage de pouvoir être renouvelable sans contribuer à une émission supplémentaire de CO₂. Cependant, il est connu que les appareils de chauffage utilisant la biomasse comme combustible peuvent générer certains polluants gazeux dont notamment les Composés Organiques Volatils (COV) et le monoxyde de carbone (CO). Le post-traitement catalytique se révèle comme une des technologies les plus prometteuses pour limiter ces émissions de polluants. Ce projet vise donc à développer des matériaux catalytiques actifs, sélectifs en dioxyde de carbone et stables, assurant une décomposition complète du mélange de COV et de CO. Les catalyseurs à base de métaux nobles, étant reconnus pour leur bonne activité pour ce type de réaction d'oxydation, engendrent cependant un coût important pour le développement d'un tel procédé. L'objectif de nos travaux sera donc basé sur la synthèse et le développement de nouveaux matériaux catalytiques peu onéreux à base d'oxydes de métaux de transition qui seront utilisés comme alternatifs aux catalyseurs à base de métaux nobles. Afin d'obtenir des oxydes performants, la synthèse des matériaux en utilisant la voie hydrotalcite a été choisie. Nous avons montré l'effet bénéfique de l'ajout du cérium dans les oxydes MgAl-O et CuAl-O vis-à-vis de l'oxydation du toluène et/ou du CO. Une relation entre la réductibilité et l'activité de ces solides pour ces réactions a été observée. Pour les catalyseurs MgAlCe-O, aucun effet sur la conversion du toluène n'a été observé, cependant un effet significatif sur la conversion du CO en présence de toluène a été mis en évidence. Ainsi, un oxyde du type CuAlCe-O s'est avéré actif et stable pour la destruction de mélanges de COV et de CO. De plus, l'intérêt d'utiliser la voie hydrotalcite pour synthétiser ces oxydes CuAlCe-O a été vérifié par comparaison avec d'autres voies de synthèses. L'activité supérieure du catalyseur CuAlCe-O peut être corrélée à un effet de synergie entre les éléments cuivre et cériumBiomass burning, in particular wood, is an attractive alternative to the utilization of fossil fuels for energy supply, as it is renewable and does contribute to any additional CO₂ emission into atmospher. However, it is known that heating appliances using biomass generate large amounts of Volatile Organic Compounds (VOCs) and carbon monoxide (CO) during the combustion cycle. A catalytic post-treatment is one of the most promising technologies to limit the emissions of these pollutants. This project aims to develop active and selective catalytic materials with enhanced redox properties in order to achieve the total oxidation of VOCs and CO at low temperature. Noble metals based catalysts are considered as good candidates for such types of reactions. However, these catalysts are very expensive for adaptation to domestic heating device. The objective of our work is focused on the synthesis and development of innovative and cheaper catalytic materials composed of transition metal oxides that could be used as alternatives to noble metal catalysts. In order to obtain efficient oxides, the hydrotelcite route was chosen for the synthesis of the catalysts. The beneficial effect of adding cerium to MgAl-O and CuAl-O oxides towards the oxidation of toluene and/or CO was demonstrated. A relationship between the reducibility and activity of these solids for these reactions has been also identified. For MgAlCe-O catalysts, a beneficial effect on the conversion of toluene in presence of CO was observed. Indeed, the temperature of toluene oxidation was shifted at lower temperatures in presence of CO. In contrary, no effect on toluene conversion was observed for the CuAlCe-O materials. However, a significant effect on the conversion of CO in presence of toluene was revealed. Briefly, a CuAlCe-O type oxide with high activity and stability has been synthesized for the destruction of VOCs and CO mixtures. In addition, the advantage of using the hydrotalcite route to synthesize these CuAlCe-O oxides has been verified by comparison with other synthetic routes. The high activity of the CuAlCe-O catalyst can be attributed to the synergic effect between copper and cerium elements
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Fayad, Layal. "Caractérisation de la nouvelle chambre de simulation atmosphérique CHARME et étude de la réaction d’ozonolyse d’un COV biogénique, le γ-terpinène." Thesis, Littoral, 2019. https://documents.univ-littoral.fr/access/content/group/50b76a52-4e4b-4ade-a198-f84bc4e1bc3c/BULCO/Th%C3%A8ses/LPCA/These_Fayad_Layal.pdf.
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L’étude des mécanismes et interactions atmosphériques est un des sujets majeurs actuels de recherches environnementales. La façon la plus directe et pertinente pour étudier la transformation des polluants et la formation des aérosols dans l'atmosphère est de simuler les processus dans des conditions contrôlées et simplifiées. Une nouvelle chambre de simulation CHARME (CHamber for the Atmospheric Reactivity and the Metrology of the Environment) a été développée au Laboratoire de Physico-Chimie Atmosphérique (LPCA) de l’Université du Littoral Côte d’Opale (ULCO). CHARME est également dédiée à la validation de dispositifs optiques utilisés pour la métrologie d’espèces atmosphériques stables et instables (radicaux). La première partie de ces travaux de recherche concerne la caractérisation de tous les paramètres techniques, physiques et chimiques de cette nouvelle chambre et l’optimisation des méthodes pour étudier la réactivité des composés organiques volatiles (COV) et simuler la formation d’aérosols organiques secondaires (AOS). Les résultats obtenus démontrent que CHARME est un outil adapté pour reproduire les réactions se produisant dans la troposphère. La deuxième partie est dédiée à l’étude de la réaction d’ozonolyse d’un COV biogénique, le γ-terpinène. La constante de vitesse à (294 ± 2) K et la pression atmosphérique a été mesurée et les produits d’oxydation identifiés dans la phase gazeuse. L’hygroscopicité des aérosols organiques secondaires a également été étudiée. A notre connaissance, ce travail représente la première étude sur la formation des AOS à partir de l’ozonolyse du γ-terpinèneThe study of atmospheric processes is among the central topics of current environmental research. The most direct and significant way to investigate the transformation of pollutants and the formation of aerosols in the atmosphere, is to simulate these processes under controlled and simplified conditions. In this regard, a new simulation chamber, CHARME (CHamber for the Atmospheric Reactivity and the Metrology of the Environment) has been designed in the Laboratory of Physico-Chemistry of the Atmosphere (LPCA) in the University of Littoral Côte d’Opale (ULCO). CHAE is also dedicated to the development and validation of new spectroscopic approaches for the metrology of atmospheric species including gases, particles and radicals.The first aim of this research was to characterize all the technical, physical and chemical parameters of this new chamber and to optimize the methods for studying the atmospheric reactivity of volatile organic compounds (VOCs) and simulating the formation of secondary organic aerosols (SOA). The results of numerous experiments and tests show that CHARME is a convenient tool to reproduce chemical reactions occurring in the troposphere. The second research objective was to investigate the reaction of the biogenic VOC, γ-terpinene, with ozone. The rate coefficient at (294 ± 2) K and atmospheric pressure was determined and the gas-phase oxidation products were identified. The physical state and hygroscopicity of the secondary organic aerosols was also studied. To our knowledge, this work represents the first study on SOA formation from the ozonolysis of γ-terpinene
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AlHaddad, Nancy. "Synthèse de nouvelles entités complexantes à base de calix[4]pyrrole pour la décontamination des milieux aquatiques en radionucléides naturels." Thesis, Littoral, 2020. https://documents.univ-littoral.fr/access/content/group/50b76a52-4e4b-4ade-a198-f84bc4e1bc3c/BULCO/Th%C3%A8ses/Toxicologie/Version_finale_These_Nancy_AlHaddad.pdf.
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Les radionucléides se retrouvent naturellement dans l'air, le sol, et l'eau et génère une radioactivité de l'environnement. Suite aux activités anthropiques récentes telle que l'extraction d'uranium ou la production de pétrole et de gaz naturel, des quantités plus importantes de radionucléides naturels ont été émises et induisent un risque pour la santé humaine. L'une des voies les plus importantes de contamination humaine aux radionucléides, en dehors de l'inhalation, passe par une contamination de l'eau résultant de l'hydrosolubilité importante de certains sels de radionucléides. De fait, des niveaux maximums de contamination en radionucléides, notamment dans les approvisionnements publics en eau, ont été internationalement réglementés. Afin de se conformer à ces exigences, des méthodes de décontamination en radionucléides de l'eau ont été développées et parmi elles, des extractants macrocycliques tels que les calixpyrroles. De structure cyclique préorganisée, ces macrocycles présentent des propriétés de chélation que l'on retrouve également chez leurs homologues de type phénoxycalix[4]pyrrole (PCP). Cependant, ce dernier présente un potentiel accru de fonctionnalisation chimique permettant l'introduction de sites supplémentaires de chélation de par la présence de quatre entités phénoliques. Dans ce contexte, la synthèse des dérivés de PCP ainsi que la capacité à complexer et extraire des éléments stables ou radioactifs ont été étudiées. Pour cela, la fonctionnalisation du PCP a été réalisée par des groupements tels que : acide carboxylique, acide hydroxamique, azide, amine et dérivés de type hétéroaryle. A l'issue de ces synthèses, l'étude des capacités de chélation du dérivé 2-pyridino-1,2,3-triazolo-PCP a été réalisée et l'existence d'une complexation sélective du fer ferreux et ferrique dans le DMSO a été mise en évidence par fluorescence moléculaire. L'étude des capacités de chélation des halogénures ont, quant à elles, étaient étudiées par titrage RMN ¹H ainsi que par fluorescence moléculaire et a montré une sélectivité pour le fluorure, habituelle pour ce type de structure. Une seconde partie de ce travail a été consacrée à la synthèse et l'étude des propriétés d'un nouveau polymère de phénoxycalix[4]pyrrole par l'épichlorohydrine (PCP-EP), ceci en vue de la décontamination des effluents aqueux chargés en radionucléides par extraction solide/liquide. Premier polymère référencé de la littérature dans cette série, sa structure a été déterminée par RMN, IRTF et ATG puis sa capacité de chélation envers les halogénures a été testée par chromatographie ionique. Les résultats ont démontré que ce polymère, contrairement à sa structure monomérique, possède une affinité supérieure pour l'iodure. Les capacités d'extraction solide/liquide des radionucléides par le PCP-EP ont été ensuite étudiées par spectromètre gamma couplé à un détecteur germanium de haute pureté, à l'aide de solutions aqueuses contenant des radionucléides et a abouti à un taux d'extraction de 22% en Ra-226. Le développement d'un plan d'expérience Doehlert a été par la suite mené afin d'optimiser les conditions d'extraction expérimentale. Lors de cette étape, l'étude du BA²⁺, métal stable et de comportement chimique similaire au RA²⁺, a été priorisée afin de réduire la production de déchets radioactifs. Les résultats de ce plan d'expérience ont abouti à des conditions d'extraction optimales de pH, température et de durée, qui translatée à une solution aqueuse radioactive, ont montré une capacité du PCP-EP à extraire 89% de Ra-226Radionuclides are found naturally in air, soil and water and generate radioactivity in the environment. As a result of recent anthropogenic activities such as uranium mining or the production of oil and natural gaz, larger quantities of natural radionucleides have been released and induce a risk to Human Health. One of the most important routes for Human contamination with radionucleides, other than inhalation, is water contamination that results from the high hydro-solubility of certain radionuclide salts. In fact, maximum contaminant levels for radionuclides contamination, especially in public water supplies, have been internationally regulated. In order to comply with these requirements, methods for decontaminating water from radionuclides have been developes, among which macrocyclic extractants such as calixpyrroles. With a preorganized cyclic structure, these macrocycles exhibit chelating properties that are also found in their phenoxycalix[4]pyrrole (PCP) homologs. However, the latter has an increased potential for chemical functionalization allowing the introduction of additional chelation sites due to the presence of four phenolic entities. In this context, the synthesis of PCP derivatives and the study of their ability to complex and extract stable or radioactive elements have been studied. For this, the functionalization of the PCP was carried out by functional groups such as : carboxylic acid, hydroxamic acid, azide, amine and heteroaryl-extended derivatives. At the end of these syntheses, the study of the chelation capacities of the derivative 2-pyridino-1,2,3-triazolo-PCP was carried out and the existence of a selective complexation of ferrous and ferric iron in DMSO was demonstrated by molecular fluorescence. As for the chelation capacities for halides, they were studied by ¹H NMR and molecular fluorescence titrations and showed a selectivity for fluoride. A second part of this work was devoted to the synthesis and study of the properties of a new polymerof PCP crosslinked by epichlorohydrin (PCP-EP), in the aim of engaging it into solid/liquid extractions, applied for the decontamination of aqueous effluents containing radionuclides. In this series of polymers, PCP-EP is the first to be reported in literature. Accordingly, its structure was determined by NMR, FTIR and TGA, then its chelation capacities towards halides was tested by ion chromatography after solid/liquid extractions. The results demonstrated that this polymer, unlike its monomeric structure, has a higher affinity for iodide. The solid/liquid extraction capacities of radionuclides by PCP-EP were then studied by a gamma spectrometer coupled to a High Purity Germanium detector, using aqueous solutions containing radionuclides and resulted in an extraction rate of 22% for Ra-226. The development of a Doehlert experimental design was then carried out in order to optimize the experimental extraction conditions. During this step, the study of BA²⁺, a stable metal with a chemical behavior similar to RA²⁺, was prioritized in order to reduce the production of radioactive waste. The results of this experimental design led to optimal extraction conditions of pH, temperature and time, which translated to an aqueous radionuclides-containing solution, showed the ability of PCP-EP to extract 89% Ra-226
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Conocimiento, Dirección de Gestión del. "Guía de acceso para The New England Journal of Medicine." NEJM Group, 2021. http://hdl.handle.net/10757/655392.
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Conocimiento, Dirección de Gestión del. "Guía de acceso para Journal of Global Fashion Marketing." Taylor & Francis Group, 2021. http://hdl.handle.net/10757/655336.
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Conocimiento, Dirección de Gestión del. "Guía de acceso para Interiors: Design, Architecture and Culture." Taylor & Francis Group, 2021. http://hdl.handle.net/10757/655317.
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Conocimiento, Dirección de Gestión del. "Guía de acceso para The Interpreter and Translator Trainer." Taylor & Francis Group, 2021. http://hdl.handle.net/10757/655393.
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Hunt, Halley Lambert. "IMPROVING EQUITY IN HOSPICE ACCESS BY REDUCING CULTURAL BARRIERS IN HOSPICE SERVICES AND HOSPICE DISCUSSIONS FOR NONWHITE US GROUPS." Master's thesis, Temple University Libraries, 2017. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/432978.
Full textAbstract:
Urban BioethicsM.A.
Though there is ample evidence in existing literature demonstrating racial inequity in end-of-life care, there is minimal examination of how the culturally mainstream values of hospice contribute to inequity and reduced access for nonwhite populations. This paper reviews participatory action research, interviews and chart reviews of nonwhite populations including African Americans, Latinx, Asians and Native Americans to determine what end-of-life values these groups report and how they differ from the values of hospice and western biomedicine. All of these groups reported unmet cultural needs with respect to hospice access ranging from differing communication style preferences to different religious beliefs to different ideas about what they dying process should look like. Contributing to these barriers was practitioner ignorance about cultural variance in end-of-life preferences, demonstrated by studies of physicians to identify barriers to effectively providing end-of-life care. To help foster better knowledge and understanding between practitioners and nonwhite patients whose cultural needs are not being met, I have created a value-assessment tool to add to the standard structure of end-of-life conversations. Using this tool with patients in end-of-life conversations could improve physician confidence in understanding the needs of patients and provide patients an opportunity to freely communicate their needs and therefore increase access to the hospice services that can meet those needs.
Temple University--Theses
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Conocimiento, Dirección de Gestión del. "Guía de acceso para Translation Studies." Taylor & Francis Group, 2021. http://hdl.handle.net/10757/655398.
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Conocimiento, Dirección de Gestión del. "Guía de acceso para Journal of Travel & Tourism Marketing." Taylor & Francis Group, 2021. http://hdl.handle.net/10757/655346.
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Flores, Michael D. S. B. Massachusetts Institute of Technology. "Analysis of the socio-economic factors that contribute to the access of medical care for different ethnic and racial groups." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36743.
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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006."June 2006."
Includes bibliographical references (leaves 24-32).
My review of the health services literature over the past decade and a half since the release of the Task Force Report revealed significant differences in access to medical care by race and ethnicity within certain disease categories and types of health services. Most studies have varied in their attempts to control for possible explanatory variables most important, SES (or some surrogate measure of social and economic status), insurance coverage, stage or severity of disease, comorbidities, and type and availability of health care services. In some cases, when important variables are controlled, racial and ethnic disparities in access are reduced and may even disappear under certain circumstances. Nonetheless, the literature shows that racial and ethnic disparities persist in significant measure for several disease categories and service types. Findings are irrefutably consistent for certain areas (invasive cardiac care), requires careful interpretation in some areas (cancer and HIV/AIDS), and are muddled in other areas (mental health). In specific health care settings (diabetes care) and under certain circumstances, no racial and ethnic disparities are observed. Altogether, findings from the published literature raise many questions about equity and fairness in health care delivery.
by Michael D. Flores.
S.B.
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McKenzie, Elizabeth. "A qualitative study exploring the experiences of access and pathways to health care among BME community groups residing in Ayrshire." Thesis, Queen Margaret University, 2017. https://eresearch.qmu.ac.uk/handle/20.500.12289/7731.
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A review of the literature showed that Black and minority ethnic (BME) communities carry a disproportionately higher burden of illness than the general population and experience greater inequalities in health and health care provision. A growing body of research confirms that BME groups are under-represented in research. The main objective of the present study was to gain insights into the perspectives of BME community groups' experiences of accessing general and sexual health care services in Ayrshire. Semi-structured interviews were conducted with 11 participants, n = 5 men (age range: 32-65; mean age = 52.4 years), and n = 6 women (age range: 27-60; mean age = 47.67 years). Data were analysed employing Interpretative Phenomenological Analysis (IPA). The analysis is illustrated through the use of four super-ordinate themes: ‘It’s a Trust Thing’, ‘Minding the Gap(s)’, ‘Sexual Health: a Culture of Silence’, and ‘Personal Perception of Risk’. The findings both support and add to the existing trust literature by presenting a heuristic model of trust, and by showing that participants trust is dynamic in character, has a role, and serves various roles and functions that impact decisions about accessing health services. Significant gaps in knowledge about available health services and unique communication challenges that prevent full access to health care and health promotion information were found, resulting in unmet needs. Analysis charted culturally driven factors that prohibit discussions about sexual health concerns and found complex cognitions involved in the personal perception of risk that was meaningfully understood by participants that direct towards understanding risk in terms of a heuristic model. The implications for clinical practice, health promotion, health service development, and the direction of future research will be discussed.
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Gruwell, Ammon Bradley. "High-Speed Programmable FPGA Configuration Memory Access Using JTAG." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6321.
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Over the past couple of decades Field Programmable Gate Arrays (FPGAs) have become increasingly useful in a variety of domains. This is due to their low cost and flexibility compared to custom ASICs. This increasing interest in FPGAs has driven the need for tools that both qualify and improve the reliability of FPGAs for applications where the reconfigurability of FPGAs makes them vulnerable to radiation upsets such as in aerospace environments. Such tools ideally work with a wide variety of devices, are highly programmable but simple to use, and perform tasks at relatively high speeds. Of the various FPGA configuration interfaces available, the Joint Test Action Group (JTAG) standard for serial communication is the most universally compatible interface due to its use for verifying integrated circuits and testing printed circuit board connectivity. This universality makes it a good interface for tools seeking to access FPGA configuration memory. This thesis introduces a new tool architecture for high-speed, programmable JTAG access to FPGA configuration memory. This tool, called the JTAG Configuration Manager (JCM), is made up of a large C++ software library that runs on an embedded micro-processor coupled with a hardware JTAG controller module implemented in programmable logic. The JCM software library allows for the development of custom JTAG communication of any kind, although this thesis focuses on applications related to FPGA reliability. The JCM hardware controller module allows these software-generated JTAG sequences to be streamed out at very high speeds. Together the software and hardware provide the high-speed and programmability that is important for many JTAG applications.