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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Importance of the subsurface limestome and pockets of soil as sources of water for tree species in Yucatan, Mexico

Estrada, Hector, January 2009 (has links)
Thesis (Ph. D.)--University of California, Riverside, 2009. / Includes abstract. Includes bibliographical references. Issued in print and online. Available via ProQuest Digital Dissertations.
42

The christology of T.T. Shields : the irony of fundamentalism

Parent, Mark January 1991 (has links)
No description available.
43

Exploring the prospect that voluntary human shields can take a direct part in hostilities

Paris, Emma January 2024 (has links)
This doctrinal thesis centers around the topic of voluntary human shields as a complex phenomenon requiring further scholarly attention. Specifically, this paper acknowledges that the actions of certain voluntary shields renders their classification as civilians strenuous, in which it is explored if the notion of Direct Participation in Hostilities might apply. As such, the research question contemplates: To what extent, if at all, can voluntary human shields be considered as taking a direct part in hostilities when shielding lawful targets?  The analyses have concentrated on both a theoretical examination of the ICRC’s Interpretive Guidance, and on an empirical investigation into two cases of voluntary human shields: the Serbian citizens in 1999 and the Palestinian women in 2006. Evidently, the findings indicate that voluntary human shields can to some extent take a direct part in hostilities, while the generalizability of our results are appreciated. Ultimately, this thesis provides additional insights into the topic, as increasingly relevant and required within the contradictory and existing research field, while also anticipating avenues for future research.
44

Plačiajuosčių planariųjų lėtinimo sistemų modeliai ir jų tyrimas / Models of broadband planar slow-wave systems and their investigation

Metlevskis, Edvardas 19 June 2014 (has links)
Disertacijoje sprendžiama papildomų ekranų įtakos meandrinių lėtinimo sistemų dažninėms savybėms įvertinimo problema. Pagrindiniai tyrimo objektai – planariosios meandrinės lėtinimo sistemos (PMLS) su papildomais ekranais, jų modeliai ir analizės bei sintezės metodai. Darbo tikslas – ištirti PMLS su papildomais ekranais, sukurti naujus modelius ir jų tyrimo metodikas leidžiančias įvertinti lėtinimo sistemų kraštų bei galų efektus, sukurti tokių lėtinimo sistemų parametrinės sintezės metodiką. / The dissertation investigates the issues of influence of additional shields on frequency characteristics of meander slow-wave system. The main objects of research include planar meander slow-wave systems with additional shields, their models and the methods of analysis and synthesis. The primary purpose of this dissertation is to investigate the planar meander slow-wave systems with additional shields by creating new models and their investigation techniques which allow to evaluate the effects on the edges and ends of slow-wave systems and create the technique for parametric synthesis of such slow-wave systems.
45

The anxiety of feminist influence : concepts of voice in Margaret Atwood and Carol Shields

Stead, Nicola Jayne January 2009 (has links)
This thesis explores the concepts of “voice” and “influence” through the case studies of two famous English-speaking Canadian women writers, Margaret Atwood and Carol Shields. The “voice” is multiple, ambiguous and influenced, but it is also apparently unique. How, therefore, is it constructed and where does it come from? I examine, work with and adapt Harold Bloom’s paradigmatic study of influence to a feminist context, exploring the idea that a literary voice can be developed and influenced by Atwood and Shields. I discuss how these writers searched for an appropriate literary role model, exemplified by nineteenth-century English-Canadian writer Susanna Moodie, at the moment when Canadian nationalism and feminism coincided. Atwood and Shields are now canonical writers themselves and important in both the nationalist and women’s tradition, but have they gone on to influence new Canadian women writers? I test the pleasures and the anxieties of Shields’ influence with regard to her creative writing students and her own daughter, Anne Giardini, who has published her first novel. I compare Shields with Atwood, who has achieved a high level of fame, and examine what kind of influence each exerts. I discuss whether literary influence is politically different for women than men and whether there is any jealousy or power struggles between the sexes. Rivalry and competition between writers are not purely caused by the aesthetic issues that Bloom discusses, therefore I contextualise his concept of influence using literary celebrity studies to consider the economic basis of cultural production. This is in order to show that tensions are determined by market conditions, just as much as the new poet’s desire to overthrow a literary precursor. Finally, I examine fan letters to Atwood and Shields as another important source of literary influence. I discuss how fans are constructed through a commercial relationship and how they can also provide an amateur literary voice. Atwood and Shields have helped to create a network of writers across the globe. I explore whether both authors can be role models who will inspire the next literary generation.
46

Erosion des sédiments cohésifs en auto-consolidation

Ternat, Fabien 15 February 2007 (has links) (PDF)
Les polluants et les matières qui transitent dans les cours d'eau peuvent constituer des stocks dans la colonne sédimentaire. Ces dépôts, soumis aux processus d'autoconsolidation, sont sujets au vieillissement et à l'enfouissement, qui augmentent leur temps de résidence dans la colonne sédimentaire par augmentation de leur résistance à l'érosion. Les flux de polluants peuvent être ramenés aux flux de matières sédimentaires, dont l'érosion est décrite par des lois à seuil. Nous proposons une modélisation du seuil d'érosion d'un sédiment cohésif. Ce modèle considère les propri étés cohésives des matières qui composent les couches sédimentaires, en s'appuyant sur la force attractive électrodynamique de contact de Van der Waals. Cette force, que nous avons paramétrée par la granulométrie et la porosité, vient s'ajouter au bilan des forces généralement considéré pour modéliser le seuil d'érosion. Des expériences d'érosion artificielle ont été menées dans un canal à érosion, avec des sédiments naturels prélevés dans la partie en aval du Rhône, pour en évaluer le seuil d'érosion, la granulométrie et la porosité. Les résultats des expériences alimentent la littérature en données expérimentales sur l'érosion de sédiments cohésifs consolidés. Le modèle d'érosion ainsi développé est appliqué dans les conditions expérimentales. Il donne un bon accord avec les mesures. Nous illustrons sa prise en compte dans un modèle de consolidation, permettant de construire des diagrammes du type Mohr pour l'érosion d'un sédiment cohésif faiblement consolidé.
47

Exploring Polynomial Convexity Of Certain Classes Of Sets

Gorai, Sushil 07 1900 (has links) (PDF)
Let K be a compact subset of Cn . The polynomially convex hull of K is defined as The compact set K is said to be polynomially convex if = K. A closed subset is said to be locally polynomially convex at if there exists a closed ball centred at z such that is polynomially convex. The aim of this thesis is to derive easily checkable conditions to detect polynomial convexity in certain classes of sets in This thesis begins with the basic question: Let S1 and S2 be two smooth, totally real surfaces in C2 that contain the origin. If the union of their tangent planes is locally polynomially convex at the origin, then is locally polynomially convex at the origin? If then it is a folk result that the answer is, “Yes.” We discuss an obstruction to the presumed proof, and use a different approach to provide a proof. When dimR it turns out that the positioning of the complexification of controls the outcome in many situations. In general, however, local polynomial convexity of also depends on the degeneracy of the contact of T0Sj with We establish a result showing this. Next, we consider a generalization of Weinstock’s theorem for more than two totally real planes in C2 . Using a characterization, recently found by Florentino, for simultaneous triangularizability over R of real matrices, we present a sufficient condition for local polynomial convexity at of union of finitely many totally real planes is C2 . The next result is motivated by an approximation theorem of Axler and Shields, which says that the uniform algebra on the closed unit disc generated by z and h — where h is a nowhereholomorphic harmonic function on D that is continuous up to ∂D — equals . The abstract tools used by Axler and Shields make harmonicity of h an essential condition for their result. We use the concepts of plurisubharmonicity and polynomial convexity to show that, in fact, the same conclusion is reached if h is replaced by h+ R, where R is a nonharmonic perturbation whose Laplacian is “small” in a certain sense. Ideas developed for the latter result, especially the role of plurisubharmonicity, lead us to our final result: a characterization for compact patches of smooth, totallyreal graphs in to be polynomially convex.
48

Mikroföretags kreditpreferenser beroende på bransch och företagsstorlek : periodiseringsfonder kontra externa lån

Singh, Sumitpal January 2013 (has links)
Det här är en kvantitativ studie av hur kreditpreferenser hos mikrobolag med en årsomsättning om mindre än 10 miljoner SEK beror av branschtillhörighet och företagsstorlek. Mikrobolag är små bolag med mindre än 10 personer anställda och en årsomsättning på mindre än 2 miljoner euro. Det teoretiska ramverket utgår från asymmetrisk informationsteori och mer specifikt från pecking order theory, POT samt trade off-teorin. Kreditpreferenserna mäts genom två olika parametrar, dels genom mikrobolagens avsättning till periodiseringsfonder vilket kan ses som ett mellanting mellan extern och intern finansiering, dels genom förekomsten av externa lån från kreditinstitut. Branscherna som undersöks är tillverkning samt tjänster vilka anses skilja sig åt vad gäller kreditpreferenser. Tillverkningsbranschen har större anläggningstillgångar vilket anses göra det lättare för dem att få extern kredit enligt trade off-teorin. Tjänstebranschen däremot, med mer immateriella tillgångar skulle då föredra periodiseringsfonder eftersom enligt POT så föredrar mindre företag internt genererat kapital. Ett antal hypoteser ställs upp som sedan testas med chi-två. Resultatet motsäger delvis teorierna. Från studien framgår dock att de undersökta företagen i tjänstebranschen har större preferenser för användning av periodiseringsfond än tillverkningsbranschen. En slutsats från studien är alltså att branschtillhörighet har betydelse för kreditpreferenserna. För företagsstorlek går inte att dra några säkra slutsatser.
49

Desenvolvimento de método para caracterização de embalados de rejeitos radioativos / Development of a method for the radioisotopic characterization of waste packages

SOUZA, DAIANE C.B. de 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:41:39Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:07:26Z (GMT). No. of bitstreams: 0 / Dissertação (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
50

Desenvolvimento de método para caracterização de embalados de rejeitos radioativos / Development of a method for the radioisotopic characterization of waste packages

SOUZA, DAIANE C.B. de 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:41:39Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:07:26Z (GMT). No. of bitstreams: 0 / Atualmente, a caracterização dos resíduos radioativos gerados na operação do reator nuclear de pesquisas IEA-R1 está em curso. O reator IEA-R1 é um reator do tipo piscina aberta, moderado e refrigerado por água leve, utilizando dois leitos de resinas de troca iônica e de carvão ativado para purificação de água de refrigeração. Estes meios filtrantes são substituídos quando já não são capazes de manter a qualidade da água dentro dos limites exigidos e são tratados como rejeitos radioativos. Contendo produtos de fissão, ativação e actinídeos que escapam do núcleo do reator para a água da piscina, apresentam altas taxas de dose devido à quantidade de emissores gama de meias-vidas curtas e intermediárias, emissores alfa, elementos transurânicos de meia-vida longa bem como emissores beta puros. A caracterização destes rejeitos, consequentemente, requer métodos de análise radioquímica que incluem a amostragem e o processamento das amostras, resultando em doses elevadas para os trabalhadores. Nesse contexto, o objetivo deste trabalho consistiu em correlacionar os resultados das análises radioquímicas de amostras de rejeitos, com os resultados das medições radiométricas, utilizando a modelagem das taxas de dose em diferentes distâncias da superfície dos embalados. As taxas de dose medidas foram comparadas com os resultados de cálculos . Massa, volume e geometria das fases sólidas e líquidas de cada um dos tambores também foram determinadas, uma vez que o teor de água varia amplamente entre diferentes tambores, e são essenciais para estimar as atividades totais em cada tambor. / Dissertação (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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