• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 49545
  • 25691
  • 13212
  • 7941
  • 3956
  • 2255
  • 630
  • 576
  • 522
  • 515
  • 408
  • 406
  • 373
  • 327
  • Tagged with
  • 15149
  • 9690
  • 6988
  • 6130
  • 5410
  • 5043
  • 4982
  • 4952
  • 4872
  • 4348
  • 4199
  • 3848
  • 3759
  • 3670
  • 3636
  • 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

臺灣戰後政經環境變遷與國土發展之硏究--台灣經驗分析(1949-2000) / A Study on Taiwan's Post-War .Political-Economical Transformation and National Land Development--Analysis of Taiwan Experience (1949-2000)

梁又文 January 1991 (has links)
No description available.
2

阮籍「自然與名教」思想析論 / The analysis of Roan Jyi''s liberty and ethics

林宴寬, Lin, Yan-Kuan January 1986 (has links)
在魏晉玄學史中,常會提到阮籍、嵇康兩人,但若仔細玩味,嵇阮二人的玄思實不如王弼和郭象,尤其是阮籍,學者們給他的評價紛歧不一,更值得探討。多數學者已能看透阮籍「非毀禮教」的「姿態」,體會到他何以要標舉自然、批判名教的「本心」;大部份的學者都從時代背景及政治環境來解釋阮籍「非毀禮教」的無奈及苦心,這個解析方向是正確的,阮籍的確是面對魏晉之交的亂世,內心激憤而故作怪態。不過,除了社會政治等外在因素,阮籍何以標舉自然、批判名教,應有其思想脈絡可探索。本文即打算以阮籍的文章為主要研究對象,從中釐清阮籍的思想脈絡,並希望藉此,能瞭解他的思想,在玄學史上所代表的意義。既然以阮籍的自然與名教思想為主要探究內容,本文首章便先討論「自然」與「名教」之衝突與會通,以期瞭解在阮籍之前,玄學家們對「自然」與「名教」這個課題所做的努力。第二章、第三章探究阮籍的名教觀。由於阮籍的前後期思想明顯不同,所以學者們對於他的儒道性格頗有爭議,第二章擬由阮籍早期的<通易論>、<樂論>及晚期<大人先生傳>等文章為主,來探討阮籍對名教看法的轉變。第三章則試圖說明阮籍的思想,其實無法以先儒後道、先老後莊或儒道互補等說法來強加歸類。阮籍前後思想的轉折,自有脈絡可尋。早期阮籍對名教 抱持肯定的態度,但是他因為自己的個性及整個時代思潮的關係,就像子貢、荀子一樣,雖崇信孔子思想,但卻無法體會仁心德性的精微妙義,由是,才會有晚期「非毀禮教」的行為出現。第四章、第五章探討阮籍的自然觀。藉由剖析〈大人先生傳〉、〈達莊論〉的思想,可以發現阮籍的自然觀,和《莊子》外、雜篇的關係十分密切。阮籍以「自然」為天地萬物的體性,發展到郭象則成為「自生論」;阮籍特別強調「萬物一體」的思想,但比起《莊子》,阮籍所嚮往的只是一分原始的混沌和諧,而這種嚮慕原始純樸的想法,到了郭象,便發展成「性分自足」的理論了。此外,藉由阮籍的自然觀,也可看出道家思想在魏晉時代的演變 軌跡。最後一章則是對阮籍的思想做個總結,並期盼透過前幾章的剖析,明白阮籍所扮演的過渡角色,仍具有他的特殊意義。 / /
3

高溫穩定之二次非線性光學聚雙馬來醯胺 / Stable Second-order Nonlinear Optical Polymeric Materials Based on Bismaleimides

蔡孟洲 January 1986 (has links)
本研究之主要目的是合成一具有高溫穩定之非線性光學材料, 我們首先合成出具有高溫穩定之二次非線性發色團基,分別為亞醯 化之DO3(簡稱MIDO3)及丙烯化之DR1-DR19(簡稱AllylDRl、 AllylDR19),其熱重分析(TGA)圖顯示出5%之熱重損失(5%weight loss)溫度皆高於250℃,比一般之發色團基高出甚多,再將合成出之 發色團基與雙馬來醯胺共聚合成新的光學高分子材料,因雙馬來醯 胺(bismaleimide)比一般的聚亞醯胺(polyimide)容易加工處理, 較一般常用的環氧樹脂具有更高的熱安定性,故所形成之共聚物有 更高之高溫穩定性。 在二次非線性發色團基分子設計上主要分成兩大類進行。第一 部份主要是合成具有馬來醯胺(Maleimide)結構之發色團基,利用 此馬來醯胺結構以形成網狀交鏈之非線性高分子。在這一部份中使 用馬來醯胺作為高分子主鏈主要是因為馬來醯胺為一可直接熱交鏈 之官能基,因此在極化/熟化的過程中可以減少溶劑、起始劑等雜質 之影響,且交鏈後之馬來醯胺結構相當地堅硬,通常具有相當高的 熱安定性。 另外,本研究之第二部份主要是合成具有丙烯基(Allyl group) 結構之發色團基,利用此丙烯基結構以形成網狀交鏈之非線性高分 子。在這一部份中之所以使用丙烯基結構之發色團基作為高溫穩定 之高分子主鏈,主要是因為丙烯基結構之發色團基本身具有高的二 次非線性係數,而利用發色團基中烯丙基本身可與雙馬來醯胺共單 體直接熱交鏈形成網狀交鏈結構,交鏈後之共聚體具有很高之熱安 定性,且可期望其有更高之二次非線性值。 藉由上述之研究中可得到調節高分子中發色團基的含量與交鏈 密度的方法以得到高非線性係數以及高溫穩定之非線性高分子材 料。 由熱分析顯示,由於共振結構對發色團熱安定性的貢獻,因此 由TGA圖可發現亞醯胺化之DO3發色團基,其熱裂解溫度已由原 本DO3的220℃提升到279℃。另外,雖然丙烯化之DR1及DR19 發色團,其丙烯基無法對DR1及DR19結構提供足夠的穩定性,但 仍較一般常用的發色團基要高出許多。含Allyl DR19與兩當量之雙 馬來醯胺(Allyl DR1/BDM=1/2)之共聚體,其二階非線性光學係 數d33值為20(pm/V)。而此丙烯基結構與雙馬來醯胺,藉由熱交鏈 所得到之網狀結構已將材料的時間穩定性大幅地提高,因此材料的 時間穩定性由賓主系統的9000分鐘48%衰減,降至網狀交鏈結構相 同時間下18%的衰減。 / /
4

Effect of bioaugmentation and diesel fuel type on soil bioremediation

Chua-Chiaco, Barrie Wu 08 1900 (has links)
The enhancement of bioremediation by bioaugmentation in soil contaminated with diesel fuel No. 2 and No. 6 (Bunker C) is uncertain. A clayey soil was contaminated with 6,000 mg of either diesel fuel per kg of soil and seeded (5 x 10-7 cells/g of soil) with a Hawaii soil bacterium (UH138) known to utilize several hydrocarbons. The soil was limed, fertilized, and incubated in jars at 30°C for several months. The concentrations of total petroleum hydrocarbons (TPH) and of polycyclic aromatic hydrocarbons (PAH) in soil were measured by gravimetry and immunoassay, respectively. Poisoned controls (0.6% HgCl2) were used to determine the extent of hydrocarbon degradation due to microbial activity. A rapid first order biodegradation of TPH (84% in 23 days) occurred in soil contaminated with diesel fuel No. 2, regardless of bacterial seeding. Biodegradation of PAH was linear and reached 84% by day 98 in both seeded and unseeded treatments. Bioaugmentation had no effect on bioremediation of diesel fuel No.2. The decrease in TPH and PAH was paralleled by an increase in populations of total bacteria, phenanthrene-degrading bacteria and microorganisms capable of utilizing hexadecane and diesel fuel No. 2 as well as by an enhancement in CO2 evolution by the soil. Indigenous Zygomycetes grew profusely in diesel fuel No. 2 contaminated soil. Cunninghamella echinulata var. echinulata was isolated from the soil and was shown to be able to utilize several hydrocarbons. Thus, Zygomycetes may have contributed to the rapid decrease in contaminant. In soil contaminated with diesel fuel No. 6, the measurements of TPH and PAH were more variable due to the uneven distribution of the product. No biodegradation of the contaminant occurred over a period of 138 days. The growth of Zygomycetes was scant. The counts of total bacteria remained unchanged after the addition of diesel fuel No. 6. However, counts of the indigenous phenanthrene-degrading bacteria increases dramatically ( 4 log units) during the first 54 days whereas the level of the seeded bacteria remained stable. The counts of mineral oil degraders decrease by 2 log units after day 2. Co2 evolution from the soil confirmed that diesel fuel No. 6 was not degraded by either the indigenous microflora or the seeded bacterium. Thus, diesel fuel No. 2 was highly degradable by the indigenous population, however, diesel fuel No. 6 was recalcitrant. / Thesis (M.S.)--University of Hawaii at Manoa, 1998. / Includes bibliographical references (leaves 106-117). / Available also on microfiche. / Department of the Interior; U.S Geological Survey via Water Resources Research Center
5

La dynamique du traitement des visages : du percept à la familiarité

Barragan-Jason, Gladys 18 February 2013 (has links) (PDF)
Reconnaître rapidement les visages familiers est une fonction fondamentale qui joue un rôle important dans nos interactions sociales. D'un point de vue évolutionniste, il semble en effet crucial de pouvoir rapidement déterminer si la personne qui nous fait face est amie ou ennemie pour adapter son comportement en conséquence. C'est sans doute pour cela que, dans l'opinion publique, mais également dans la littérature scientifique, la reconnaissance des visages est supposée être un processus très rapide, efficace et exécuté sans effort. Cependant, la reconnaissance des visages familiers est-elle réellement si rapide ? Ne serait-ce pas simplement une idée reçue ? Rapide, admettons, mais à quelle vitesse ? En adaptant des protocoles de catégorisation visuelle rapide (tâche de go/no-go) développés initialement pour étudier la rapidité du système visuel et en mettant en place de nouveaux protocoles de catégorisation ultra-rapide (" Speed and Accuracy Boosting procedure " ; SAB), nous avons pu déterminer les latences comportementales et électrophysiologiques les plus précoces pour reconnaître explicitement un visage célèbre. Nous nous sommes intéressés d'une part à la reconnaissance de type " bottom-up " (reconnaître plusieurs visages célèbres sans savoir au préalable de qui il s'agit) et d'autre part à la reconnaissance " top-down " (reconnaître une personne en particulier parmi des inconnus). Le temps de réaction minimum pour reconnaître des visages célèbres parmi des inconnus (reconnaissance " bottom-up ") est d'environ 360-390 ms, ce temps de réponse ne pouvant être amélioré ni par un apprentissage intensif des stimuli (Article 1), ni par un protocole de catégorisation ultra-rapide (Article 2). Ce temps de réaction est environ 100 ms plus tardif que lors d'une tâche de détection de visage (Article 1) ou de genre (Article 1). Ces latences sont très différentes lorsque la procédure SAB est appliquée à une reconnaissance de type " top-down ", descendant à environ 300 ms contre 270 ms dans une tâche de détection de visages (Article 3). De plus, en appliquant une méthode de MVPA (Multi-Variate Pattern Analysis) à des données d'EEG de surface, nous avons montré que l'activité neuronale liée à la reconnaissance des visages célèbres était disponible dès 230 ms après la présentation du stimulus (voire 200 ms pour le sujet les plus rapides) alors que l'activité neuronale liée à a détection d'un visage humain parmi des visages d'animaux était disponible dés 80 ms (Articles 4 et 5). L'activité neuronale était de plus fortement corrélée aux temps de réponses minimales en reconnaissance, confirmant ainsi son rôle dans la prise de décision. Nous discutons ces latences au regard des modèles de la voie visuelle ventrale et des modèles de la reconnaissance des visages. Nous distinguons trois modèles différents pouvant théoriquement être à l'origine de la familiarité et en favorisons un en particulier.
6

Inteligência artificial e a ilusão do percepto afetivo

Fusaro, Alberto Cabral 02 April 2018 (has links)
Submitted by Filipe dos Santos (fsantos@pucsp.br) on 2018-06-06T12:05:21Z No. of bitstreams: 1 Alberto Cabral Fusaro.pdf: 927659 bytes, checksum: ef5aba7d663a9eee92192d1756b51a25 (MD5) / Made available in DSpace on 2018-06-06T12:05:21Z (GMT). No. of bitstreams: 1 Alberto Cabral Fusaro.pdf: 927659 bytes, checksum: ef5aba7d663a9eee92192d1756b51a25 (MD5) Previous issue date: 2018-04-02 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / Our investigation fits into a branch of Artificial Intelligence research, namely the Weak AIs subset, aiming to figure out the way that these AIs are applied in videogames development – we call it just “games”, referring to all games that run on any form of electronics platform. Our focus bears on a strict human-behavior simulation system that goes on the market by the name of Drivatar, a system-controlled virtual-entity whose operation is based on machinelearning technology. They were developed by Microsoft and Turn10 Studios to perform as “simulated human” pilots in their Forza Motorsport automotive-racing franchise games. Our goal is to identify the main AI elements and their application strategies that enable them to create the illusion of humanity, making the players believe that they are their human counterparts instead of simulations / Nossa pesquisa se enquadra em um segmento do ramo de estudos de Inteligência Artificial, mais especificamente o das IAs Fracas, investigando o modo como são utilizadas no desenvolvimento de games – jogos que operam em uma plataforma de tecnologia eletrônica. Focalizamos a investigação em um sistema de simulação restrita de comportamento humano nomeado comercialmente como Drivatar, uma entidade virtual controlada pelo sistema que opera com base em aprendizagem de máquina, desenvolvida em parceria pelas empresas Turn10 Studios e Microsoft para atuar como simulações de pilotos humanos nos games do gênero de corrida de carros da franquia Forza Motorsport. Nosso objetivo é a identificação dos principais elementos de IA, bem como das estratégias utilizadas em sua aplicação, que habilitam esses agentes inteligentes a causar nos jogadores humanos a ilusão de que os Drivatars são os próprios indivíduos que estão simulando
7

Aqua percept: A successful program from multiple perspectives

Boudreau, Mylène January 2014 (has links)
This study investigated the components of an adapted physical activity program perceived to be successful from multiple perspectives, those being the adolescents, the instructors, and the parents. Their personal experiences and interpretations were ascertained by interviews, and field observations. The literature review involved arguments from topics such as individuals with disabilities and physical activity, research in sport and recreation programs, research gaps in the study of APA programs, program success and program components, instructors and training, and intervention models. Evidence-based practice was the main theoretical framework that guided this study. An interpretative phenomenological analysis (IPA) confirmed that the Aqua Percept program is a successful program. Specifically, the following components were considered to play a significant role in the success of the program by all three groups: instructors, facilities, atmosphere, and program outcomes. The structure/organization of the AP program and training were important components according to the parents and the instructors only. In addition, another theme emerged for all three groups during the analysis: challenges and recommendations. The Aqua Percept program is a successful program within its community and over the years has evolved to adapt to the individual needs of its participants. The model of success of the Aqua Percept program can be use to inspire the creation of new programs or the improvement of older programs. / Cette étude a examiné les composantes d'un programme d'activité physique adaptée perçu comme étant couronné de succès à partir de plusieurs points de vue, ceux-ci étant des adolescents, des instructeurs et des parents. Leurs expériences personnelles et interprétations ont été constatées par des interviews et des observations de terrain. La revue de la littérature a impliqué des sujets tels que les personnes handicapées et l'activité physique, la recherche dans les programmes de sport et de loisirs, les lacunes de la recherche dans l'étude des programmes d'APA, la réussite du programme et les composantes du programme, la formation, et des modèles d'intervention. La pratique fondée sur les preuves est le cadre théorique principal qui a guidé cette étude. Une analyse phénoménologique interprétative a confirmé que le programme Aqua Percept est un programme couronné de succès. Plus précisément, les éléments suivants ont été considérés par les trois groupes de participants comme jouant un rôle important dans le succès du programme: les instructeurs, les installations, l'atmosphère, et les résultats du programme. La structure / organisation du programme et la formation AP étaient des éléments importants selon les parents et les instructeurs seulement. De plus, un autre thème a émergé au cours de l'analyse: défis et recommandations. Le programme Aqua Percept est un programme couronné de succès au sein de sa communauté et qui a su, au fil des années, évoluer pour s'adapter aux besoins individuels de ses participants. Le modèle de la réussite du programme Aqua Percept peut être utilisé pour inspirer la création de nouveaux programmes ou l'amélioration de programmes plus anciens.
8

Experiência Perceptiva - M. Merleau-Ponty e G. Ryle

Sâmara Araújo Costa 02 January 2020 (has links)
No description available.
9

Aqua percept: A successful program from multiple perspectives

Boudreau, Mylène January 2014 (has links)
No description available.
10

Entre processos e perceptos - Arquiteturas contemporâneas, multiplicidade e heterogeneidade de expressões estéticas

Silva, Ariadne Moraes Silva 04 June 2013 (has links)
Submitted by Francisco Costa (xcosta@ufba.br) on 2013-06-03T15:42:58Z No. of bitstreams: 1 Entre Processos e Perceptos_Ariadne_PPGAU-FAUFBA.pdf: 34506471 bytes, checksum: 9f55de37c6201e20915b4bd658bd0a58 (MD5) / Approved for entry into archive by Edilene Costa(ec@ufba.br) on 2013-06-04T23:56:33Z (GMT) No. of bitstreams: 1 Entre Processos e Perceptos_Ariadne_PPGAU-FAUFBA.pdf: 34506471 bytes, checksum: 9f55de37c6201e20915b4bd658bd0a58 (MD5) / Made available in DSpace on 2013-06-04T23:56:33Z (GMT). No. of bitstreams: 1 Entre Processos e Perceptos_Ariadne_PPGAU-FAUFBA.pdf: 34506471 bytes, checksum: 9f55de37c6201e20915b4bd658bd0a58 (MD5) / Os processos de projeto e arquiteturas contemporâneas são entendidos a partir de sua multiplicidade e heterogeneidade de conexões e contaminações com outras esferas do pensamento, seja a arte, a ciência e a filosofia. Entre as mais diferentes tramas de expressões estéticas na produção de arquiteturas (diagramas, hibridizações, desconstruções, experimentações, tecnologias virtuais, fluxos, transversalidades, micro-ações, desejos, imprevisibilidades, etc), verifica-se seus intensos processos de transformação em meio ao caráter heterogêneo de suas formações e de suas diferenças de grau e/ou nível, embora, poucas vezes, mudem de natureza. As problematizações provocadas ao longo do trabalho podem indicar contribuições críticas ao fazer arquitetônico e potencializar o arranque de metodologias “mutantes” e subjetivas que não se curvem a uma geometria meramente cartesiana. Este trabalho também aponta outras formas perceptivas, afetivas, sensoriais, intempestivas e “corporais” de se compreender o espaço da cidade e suas arquiteturas - territórios que não se deixam simular apenas pelo mundo da representação, mas que se delineiam entre traços de conteúdo e de expressão, em seus universos moleculares. Palco de complexas coexistências de uma multiplicidade de arquiteturas que atendem aos mais diversos setores e poderes, mas que sugerem a emergência de pequenos focos de resistência a um pensamento dominante/convencional e que possibilite quebras das linhas de segmentaridade dura, abrindo espaço para outros campos da criação. / Salvador

Page generated in 0.1499 seconds