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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.
1

Deterioration of oxide-coated cathodes under low duty-factor operation

January 1950 (has links)
J.F. Waymouth, Jr. / "July 20, 1950." / Bibliography: p. 15. / Army Signal Corps Contract No. W36-039-sc-32037 Project No. 102B Dept. of the Army Project No. 3-99-10-022
2

Avaliação assistida informatizada : indicadores do potencial cognitivo de crianças com deficiência

Oliveira, Jucineide Della Valentina de 28 August 2009 (has links)
Submitted by Elizabete Silva (elizabete.silva@ufes.br) on 2014-10-09T22:50:10Z No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Dissertacao.Texto.Jucineide.pdf: 2598917 bytes, checksum: 1e2d46651a88fa5691d485180a5bf7e5 (MD5) / Approved for entry into archive by Elizabete Silva (elizabete.silva@ufes.br) on 2014-11-18T18:51:08Z (GMT) No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Dissertacao.Texto.Jucineide.pdf: 2598917 bytes, checksum: 1e2d46651a88fa5691d485180a5bf7e5 (MD5) / Made available in DSpace on 2014-11-18T18:51:08Z (GMT). No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Dissertacao.Texto.Jucineide.pdf: 2598917 bytes, checksum: 1e2d46651a88fa5691d485180a5bf7e5 (MD5) Previous issue date: 2009 / A identificação e a avaliação de crianças com desenvolvimento atípico configuram um processo muito importante para subsidiar as estratégias de ensino voltadas para a promoção do potencial de aprendizagem. O interesse em relação ao prognóstico de crianças com deficiência tem impulsionado o desenvolvimento de novas tecnologias e pesquisas relacionadas à avaliação, prevenção e intervenção. Nesse contexto, torna-se relevante verificar com instrumentos adequados indicadores linguísticos, cognitivos e comportamentais, para assim traçar metas a partir daquilo que as crianças podem aprender. Dessa forma, esta pesquisa teve por objetivo verificar se a avaliação assistida informatizada se apresenta como uma modalidade de diagnóstico mais prescritivo do desenvolvimento cognitivo, quando comparada à avaliação psicométrica, na aplicação em crianças com deficiência. Na modalidade assistida há ajuda do examinador para conduzir a criança a um melhor nível de desempenho cognitivo. Participaram 11 crianças que frequentam uma instituição de atendimento clínico, em saúde, para crianças com deficiência, na Grande Vitória. Na avaliação psicométrica foram utilizados a Escala de Maturidade Mental Colúmbia computadorizada – Colúmbiacomp e o Teste de Vocabulário por Imagens Peabody - TVIPcomp. Na avaliação assistida informatizada foram aplicadas três provas voltadas para as habilidades de classificação e raciocínio analógico: Exclusão de Objetos, Exclusão de Figuras Geométricas e Jogo de Analogia de Figuras, no ambiente informatizado SINDAPSI. Protocolos de registro de fatores afetivo-motivacionais e de operações cognitivas foram utilizados durante as tarefas assistidas. Na avaliação do comportamento, o Child Behavior Checklist – CBCL foi respondido pelas mães. Dados documentais e dos instrumentos foram submetidos à análise estatística descritiva para verificar o desempenho das crianças nas duas formas de avaliação informatizada (psicométrica e assistida). Nos testes psicométricos, 64% das crianças alcançaram índice “abaixo da média” no TVIPcomp, e 55% “médio-inferior” no Colúmbiacomp. Em relação ao perfil de desempenho cognitivo, na Prova de Exclusão de Objetos computadorizada 55% das crianças foram avaliadas como “não-mantenedoras”. Na Prova de Exclusão de Figuras Geométricas computadorizada 55% da amostra foi classificada no perfil “alto-escore”, e no Jogo de Analogias de Figuras computadorizado 45% apresentou o perfil “ganhador”. A amostra demonstrou níveis de dificuldade na realização dos testes,tanto na modalidade psicométrica quanto assistida. Contudo, o desempenho nos testes assistidos foi relativamente melhor, evidenciando que o grupo se beneficiou da mediação,implementada na fase de assistência, para melhorar as habilidades cognitivas. Além disso, a apresentação informatizada dos testes apresentou-se como fator motivador para a realização e persistência nas tarefas. / The identification and assessment of children with atypical development constitute a very important process to support the strategies of education aimed at promoting the potential of learning. The interest regarding the prognosis of children with disability has been stimulating the development of new technologies and researches with regard to assessment, prevention and intervention. In this context, it is important to check with appropriate instruments indicators linguistic, cognitive and behavioral, in order to delineate goals from what they can learn. This way, this study aims to verify whether computerized dynamic assessment is a modality of diagnosis more prescribing of the cognitive development than the traditional tests in the application on children with disability. In assisted mode should help the examiner to conduct the child to a better level of cognitive performance. Participated in this study 10 children who attend an institution of clinical care, in health, for children with disabilities in the Grande Vitória. In traditional tests were used the Columbia Mental Maturity Scale Computed (CMMScomp) and the Peabody Picture Vocabulary Test (PPVTcomp) with computerized system. Were applied three assessment assisted towards the skills of classification and analogical reasoning: Object Exclusion, Exclusion of geometric figures and Game Analogy of Figures, in the computerized software SINDAPSI. We also used the protocols of record affective-motivational factors and cognitive operations made during the task. In assessing the behavior, the Child Behavior Checklist - CBCL was completed by mothers. The documental data and instruments were subjected to descriptive statistical analysis, to verify the performance of the children in the two methods of assessment (psychometric and dynamic). In the psychometrics tests 64% of the children scored “below average” in PPVTcomp, and 55% “below average” in Colúmbiacomp. With regard to the cognitive performance in the Exclusion of Evidence Objects 55% of the children were assessed as “non maintainer”, in the Exclusion of Evidence in Geometric Figures computed 55% as “high-score” and in the Game Analogies of Figures 45% like “winner”. The sample showed levels of difficulty in the realization of the tests such in the psychometric modality as in the dynamic assessment. However, the performance in the dynamic tests was relatively better attended, showing that the group has benefited from the mediation, implemented in the phase of assistance, to improve cognitive skills. Furthermore, the computerized presentation of the tests offered a tool for motivating performance and persistence in tasks.
3

Momentos magnéticos de estados nucleares do \'ANTPOT.159 Tb\'. / Magnetic moments of nuclear states of 159Tb.

Medina, Nilberto Heder 09 October 1992 (has links)
Foram medidos os momentos magnéticos dos estados da banda rotacional do estado fundamental do ANTPOT 159 Tb, através da técnica da distribuição angular perturbada, utilizando-se o campo magnético transiente. Os estados do ANTPOT. 159 Tb foram populados via excitação coulombiana com feixe de ANTPOT. 35 Cl a 88 Me V, sendo os raios -y, emitidos na desexcitação dos estados, observados em coincidência com as partículas retroespalhadas do feixe. Os momentos magnéticos medidos neste trabalho, foram comparados com as previsões de modelos híbridos (rotor+partícula e rotor triaxial+quase-partícula), nos quais a hamiltoniana do núcleo é separada em uma parte fenomenológica que descreve o caroço e uma parte microscópica que leva em conta o movimento da partícula desemparelhada. Os resultados experimentais também foram interpretados com um cálculo puramente microscópico, baseado no modelo de camadas com projeção de momento angular. Os níveis de energia da banda do estado fundamental são bem descritos pelos modelos, embora o staggering em energia previsto pelo modelo rotor triaxial+quase-partícula apresente uma fase de oscilação oposta à observada. Os momentos magnéticos experimentais são bem reproduzidos pelos modelos, nos quais a inclusão de outras configurações sugere uma pequena oscilação, observada nos resultados experimentais. As probabilidades de transição magnéticas B(M1) não são bem descritas por nenhum dos modelos, nos quais a inclusão de várias configurações atenua os valores calculados. / Magnetic moments of the levels in the ground state rotational band of 159Tb were measured using the transient magnetic field perturbed angular distribution technique. The levels in 159Tb were populated by Coulomb excitation with an 88 MeV beam and the deexciting rays were observed in coincidence with backscattered projectiles. The magnetic moments measured in this work were compared with hybrid models (rotor+particle and triaxial rotor+quasiparticle) in which the Hamiltonian of the nucleus is separated in a phenomenological part describing the core and a rnicroscopic part which takes into acconnt the movement of the unpaired particle. The experimental results were also interpreted with a purely microscopic calculation based on the angular momentum projection shell model. The energy levels in the ground state band are well described by the models, although the energy staggering predicted in the triaxial rotor+quasi-particle calculation has a phase opposite to the observed one. The experimental magnetic moments are well reproduced by the models, with the band miring suggesting a slight oscillation as observed in the experimental data. The magnetic transition probabilities B(M1) are not well described by the models, in which the band mixing attenuates the calculated values.
4

Momentos magnéticos de estados nucleares do \'ANTPOT.159 Tb\'. / Magnetic moments of nuclear states of 159Tb.

Nilberto Heder Medina 09 October 1992 (has links)
Foram medidos os momentos magnéticos dos estados da banda rotacional do estado fundamental do ANTPOT 159 Tb, através da técnica da distribuição angular perturbada, utilizando-se o campo magnético transiente. Os estados do ANTPOT. 159 Tb foram populados via excitação coulombiana com feixe de ANTPOT. 35 Cl a 88 Me V, sendo os raios -y, emitidos na desexcitação dos estados, observados em coincidência com as partículas retroespalhadas do feixe. Os momentos magnéticos medidos neste trabalho, foram comparados com as previsões de modelos híbridos (rotor+partícula e rotor triaxial+quase-partícula), nos quais a hamiltoniana do núcleo é separada em uma parte fenomenológica que descreve o caroço e uma parte microscópica que leva em conta o movimento da partícula desemparelhada. Os resultados experimentais também foram interpretados com um cálculo puramente microscópico, baseado no modelo de camadas com projeção de momento angular. Os níveis de energia da banda do estado fundamental são bem descritos pelos modelos, embora o staggering em energia previsto pelo modelo rotor triaxial+quase-partícula apresente uma fase de oscilação oposta à observada. Os momentos magnéticos experimentais são bem reproduzidos pelos modelos, nos quais a inclusão de outras configurações sugere uma pequena oscilação, observada nos resultados experimentais. As probabilidades de transição magnéticas B(M1) não são bem descritas por nenhum dos modelos, nos quais a inclusão de várias configurações atenua os valores calculados. / Magnetic moments of the levels in the ground state rotational band of 159Tb were measured using the transient magnetic field perturbed angular distribution technique. The levels in 159Tb were populated by Coulomb excitation with an 88 MeV beam and the deexciting rays were observed in coincidence with backscattered projectiles. The magnetic moments measured in this work were compared with hybrid models (rotor+particle and triaxial rotor+quasiparticle) in which the Hamiltonian of the nucleus is separated in a phenomenological part describing the core and a rnicroscopic part which takes into acconnt the movement of the unpaired particle. The experimental results were also interpreted with a purely microscopic calculation based on the angular momentum projection shell model. The energy levels in the ground state band are well described by the models, although the energy staggering predicted in the triaxial rotor+quasi-particle calculation has a phase opposite to the observed one. The experimental magnetic moments are well reproduced by the models, with the band miring suggesting a slight oscillation as observed in the experimental data. The magnetic transition probabilities B(M1) are not well described by the models, in which the band mixing attenuates the calculated values.
5

Pojištění cestovních kanceláří na českém pojistném trhu / Insurance of travel agencies on the Czech insurance market

Budilová, Michala January 2012 (has links)
This diploma thesis focuses on insurance against failure of travel agencies, more precisely on the problems aroused on the Czech insurance market. The main problem is a gap in the law 159/1999 Coll., which should be amended in the future. However, this thesis should highlight these problems, assess them and find a sufficient solution to them, or eventually, find someone responsible for this situation. Shortcomings are investigated from several perspectives - from the point of view of the travel agencies, insurance companies, Ministry of Regional Development as well as from the point of view of the clients of these travel agencies.
6

Návrh křidélka z kompozitních materiálů / Design of Aileron of Composite Materials

Dvořák, Vlastimil January 2008 (has links)
This diploma thesis called „Aileron Design of Composite Materials” deals with the technologies of production used in aricraft industries. It shows appropriate conceptions of composite structures for the airplane aileron of Aero L-159A/B as well as a proposal of an accetable structure for RTM process.
7

State Formation and Ethnic Identity in the Late-Seleucid Levant (200–63 BCE)

Ish-Shalom, Tal A. January 2023 (has links)
This dissertation provides a model for understanding the relation between shifting imperial and post-imperial geopolitics and cultural change in diverse local communities. Specifically, I offer a new perspective on the debate in ancient history regarding “Hellenization,” i.e., the adoption and adaptation of Greek cultural idioms by non-Greek communities. Despite recent advances in emphasizing local communities’ agency in the “Hellenization” process, scholars tend to maintain a rigid dichotomy of monolithic “Greek” vs. “local” culture, and do not offer a comprehensive model accounting for variations in changes, and continuity, by region or time. I propose such a model for the late- and post-Seleucid Levant, and offer significant insights into Hellenistic, Phoenician and Jewish history. I argue that following the Seleucid conquest in the early second century BCE, diverse local communities began competing against each other for imperial favor by often resorting to a form of particularistic ethnic discourse, which emphasized claims to ancestral, pre-Hellenistic identities. In a paradoxical process, however, competing communities often adopted Greek cultural idioms to support these particularistic claims. While it is shown how the specific Greek cultural idioms adapted, varied according to sub-region and period, leadership, and geopolitical situation, it is argued that the idiosyncratic competitive dynamic, fostered by Seleucid power, incentivizing both particularistic discourse and the adoption of new Greek cultural idioms, proved pivotal in allowing diverse communities to develop a Greek cultural “infrastructure.” The political-cultural analysis allows us to broaden and nuance our understanding of subsequent Seleucid disintegration. By better integrating the literary and epigraphical sources with a fresh approach to the numismatic evidence (including the study of some unpublished collections) and taking into account the dramatic archaeological advances of the past two decades, I propose a new model for Seleucid decline. The “concessionist” dynamic outlined by recent scholarship, according to which local elites exploited Seleucid dynastic rivalries to extract privileges, needs to be qualified. While describing well the situation in some communities, such as Hasmonaean Judaea, it is not adequate for cities on the Phoenician coast. Rather, I propose an alternative “loyalist-secessionist” model, stressing the greater importance of external actors, especially the underappreciated role of the Ptolemies and a new understanding of Rome’s indirect involvement. The cultural implications for this novel political-historical model come to the fore following a watershed in Seleucid political history, the death of King Antiochus VII in 129 BCE. In an anarchic late-Hellenistic world, smaller cities, such as Tyre and Sidon, upon becoming independent, sought new alliances by re-utilizing their Greek cultural “infrastructure” towards greater institutional and cultic homology with Greek peer polities. In the absence of Seleucid pressure towards particularism, by contrast, traditional elements were rendered obsolete or even counterproductive to these new efforts. Thus, only at this stage of independence from Hellenistic empire non-Greek cultural elements atrophied, explaining the loss of Phoenician language in this period and the decline in sites of native cult. In other words, it was not a long, linear process of “Hellenization” but concrete, largely contingent, historical factors that explain this development in the specific time and place. In the neighboring Hasmonaean kingdom, by contrast, a series of contingent events (e.g., the “Judaization” of the Idumaeans) created a power-multiplier that put the kingdom onto a different trajectory. Prioritizing imperialistic ambitions, and shifting their own Greek “infrastructure” accordingly, they were not incentivized to similarly abandon traditional language and cult. Rather, by adopting a new ethos of a Hellenistic court, the kingdom facilitated the coalescing of newly-Judaized elites around the Hasmonaean dynasty and Jerusalem, fostering a metrocentric imperialistic outlook which paradoxically complemented and cemented rather than replaced the Yahwistic cult and a sense of Jewish particularism. This, I argue, is a key, hitherto overlooked, factor in the continuity of particularistic Jewish identity, which may help historicize and elucidate the seeming Jewish “exceptionalism” in the region. Put differently, the observed cultural divergence between Levantine communities, clearly apparent by the Roman period, can, in fact, be traced to, and elucidated by a specific historical moment, the common experiences of Seleucid imperial domination and the contingent effects of it collapse in the course of the 2nd century BCE.
8

An assessment of metabolic bone disease in the skeletal remains of Chinese indentured mine labourers from the Witwatersrand

Meyer, Anja January 2014 (has links)
An essential part of bioarchaeology is the study of diet and nutrition and its effects on the general health of a person. Interpretation of nutritional and metabolic disease related pathologies often provide additional insight into the daily social and cultural practices of people. It is therefore also an essential part of understanding differences amongst past populations from archaeological contexts and provides an alternative means for cross referencing historical accounts. In this study the skeletal remains of 36 Chinese indentured mine labourers, who worked and died on the Witwatersrand mines during the period AD 1904-1910, were assessed for any signs of metabolic or nutritionally related signs of disease. Historical information suggests that these indentured Chinese labourers came from poverty stricken communities in China where disease and malnutrition were often encountered. Once in South Africa they were again subjected to the harsh living and working conditions associated with mining. Analyses suggest that all 36 individuals were males between the ages of 16 and 45 years, with the majority being of young adult age (20-34 years). Pathology that could be observed included a high prevalence of nutrition-related changes and linear enamel hypoplasia which suggests that the Chinese miners had been subjected to long periods of malnutrition and illness throughout childhood continuing into adulthood. Nevertheless, a large proportion of lesions associated with malnutrition showed some degree of healing. A high frequency of traumatic lesions, specifically peri-mortem fractures, was observed and may have contributed to the death of many of the Chinese miners. It therefore seems that even though the healing of pathological lesions associated with malnutrition indicated a period of improved nutritional intake, possibly during their time on the Witwatersrand mines, the high prevalence of peri-mortem fractures attests to the hazardous working conditions associated with deep-level mining. In order to aid in the interpretation of skeletal pathology associated with metabolic and nutritional diseases non-specific signs of disease observed in a cadaver skeletal sample with known causes of death (related to specific metabolic or nutritional diseases) were compared to pathology observed in the Chinese miners. This provided pathological patterns which enabled a better interpretation of the pathology observed in the Chinese skeletal remains. / Dissertation (MSc)--University of Pretoria, 2014. / am2014 / Anatomy / unrestricted
9

A ira na Hecyra de TerÃncio

Stefanie Cavalcanti De Lima Silva 00 December 2018 (has links)
CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior / O presente trabalho propÃe investigar a ira na Hecyra (160 a.C.) de TerÃncio (185-159 a.C.) por meio de uma leitura estoica. A delimitaÃÃo desse corpus de anÃlise decorre da significativa recorrÃncia na peÃa de um campo lexical atrelado à noÃÃo de ira (ira, iniuria, iniquitas), em especial em episÃdios que envolvem os senes Laques e Fidipo. Julgando possÃvel examinar a presenÃa da ira na Hecyra por um prisma estoico, nosso objetivo à analisar a peÃa à luz da teoria das paixÃes. Para atingir esse objetivo, elaboramos uma pesquisa bibliogrÃfica e entÃo estudamos textos filosÃficos que discutam a teoria das paixÃes, principalmente à luz do estoicismo, em seguida aplicamos os resultados obtidos Ãs hipÃteses de nossa pesquisa e realizamos uma anÃlise mais fundamentada do texto de TerÃncio. Para desenvolver esta pesquisa, utilizamos como fundamentaÃÃo teÃrica em especial obras filosÃficas que discutam a teoria das paixÃes, sobretudo a ira, como Rhetorica e Ethica Nicomachea, de AristÃteles, Tusculanae disputationes, de CÃcero, e De ira, de SÃneca. AlÃm de textos antigos, tambÃm utilizamos estudos modernos a respeitos da teoria das paixÃes, como os de Martha C. Nussbaum e Margareth Graver. Na IntroduÃÃo, comentamos a relaÃÃo do teatro com a filosofia e como essa relaÃÃo se dava desde Menandro, contextualizamos TerÃncio e sua obra e discutimos a relaÃÃo de seu teatro com a filosofia e sua presenÃa no CÃrculo dos CipiÃes; no capÃtulo seguinte, apresentamos a teoria das paixÃes e a concepÃÃo de ira nas escolas peripatÃtica e estoica; no terceiro capÃtulo, analisamos a presenÃa de um lÃxico vinculado à noÃÃo de ira na Hecyra à luz do estoicismo. Esperamos, ao fim desta investigaÃÃo, descortinar um pouco mais o diÃlogo da literatura com a filosofia e o teatro de TerÃncio, em particular a Hecyra. / The present work proposes to investigate anger in Hecyra (160 BC), play by Terence (185- 159 BC), through a Stoic reading. The delimitation of analysis corpus stems from a significant recurrence of a lexical field linked to the anger notion (ira, iniuria, iniquitas) in the play, especially in episodes that involve the senes Laques and Fidipo. Judging the possibility to examine the presence of anger in Hecyra by a Stoic prism, our aim is to analyze the play in light of Theory of the Passions. To reach this goal, we elaborate a bibliographical research and then study philosophical texts that discuss the Theory of the Passions, mainly in the light of stoicism, then apply the results obtained to our research hypothesis and make a more reasoned analysis of Terenceâs text. To develop this research, we use as theoretical foundation, especially philosophical works, that discuss the Theory of Passions, especially Anger, such as Rhetorica and Ethica Nicomachea, by Aristotle, Tusculanae disputationes, by Cicero, and De ira by Seneca. In addition to ancient texts, we also use modern studies concerning the theory of passions, such as Martha C. Nussbaum and Margareth Graver. In the Introduction section, we comment on the relationship between theater and philosophy and how this relationship was given since Menander, we contextualize Terence and his work, discuss his theater relationship with philosophy, and his presence in the Scipionic Circle; in the following chapter, we present the theory of passions, the conception of anger in both peripatetic and stoic schools; in the third chapter, we analyze the presence of a lexicon linked to the notion of anger in Hecyra in the light of Stoicism. We hope, at the end of this investigation, to discover a little more on the dialogue of literature with philosophy and theater by Terence, in particular Hecyra. .

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