• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 753
  • 209
  • 178
  • 143
  • 116
  • 88
  • 32
  • 31
  • 19
  • 16
  • 15
  • 14
  • 10
  • 6
  • 5
  • Tagged with
  • 1905
  • 367
  • 219
  • 114
  • 114
  • 113
  • 112
  • 112
  • 111
  • 97
  • 97
  • 94
  • 92
  • 90
  • 89
  • 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.
291

Three essays on securitization /

Mordel, Adi. Mason, Joseph. January 2010 (has links)
Thesis (Ph.D.)--Drexel University, 2010. / Includes abstract and vita. Includes bibliographical references (leaves 124-130).
292

Beach invertebrates of Cape Cod National Seashore : environmental factors and the effects of off-road vehicles /

Kluft. Jacqueline Michele. January 2009 (has links)
Thesis (Ph.D.) -- University of Rhode Island, 2009. / Typescript. Includes bibliographical references (leaves 125-135).
293

Prediction of circulation control performance characteristics for super STOL & STOL applications

Naqvi, Messam Abbas. January 2006 (has links)
Thesis (Ph. D.)--Aerospace Engineering, Georgia Institute of Technology, 2007. / Dimitri N. Mavris, Committee Chair ; Lakshmi N. Sankar, Committee Member ; Daniel P. Schrage, Committee Member ; Robert J. Englar, Committee Member ; Robert C. Michelson, Committee Member.
294

Entstehung und Entwicklung universitärer Spin-off-Aktivitäten in China : eine regional vergleichende Analyse /

Kroll, Henning. January 2006 (has links)
Thesis (doctoral)--Universiẗat, Hannover, 2005.
295

Off-road vehicle policy on USDA national forests : evaluating user conflicts and travel management /

Yankoviak, Brenda M. January 2005 (has links) (PDF)
Thesis (M.S.)--University of Montana, 2005. / Includes bibliographical references (leaves 64-70). Also available on the World Wide Web.
296

Off-road vehicle policy on USDA national forests evaluating user conflicts and travel management /

Yankoviak, Brenda M. January 2005 (has links) (PDF)
Thesis (M.S.)--University of Montana, 2005. / Title from PDF file as viewed on 5/17/2007. Includes bibliographical references (leaves 64-70). Also available in print.
297

Behaviour of demountable shear connectors in composite structures

Rehman, Naveed Ur January 2017 (has links)
The research presented in this thesis is to evaluate the feasibility of demountable shear connectors as an alternative to welded shear connectors in composite structures through push off tests and composite beam tests. Push off tests were conducted to examine the shear strength, stiffness and ductility of demountable shear connectors in composite structures. The experimental results showed that demountable shear connectors in composite structures have very similar shear capacity to welded shear connectors. The shear capacity was compared against the prediction methods used for the welded shear connections given in Eurocode 4 and AISC 360-10 and the methods used for bolted connections in Eurocode 3 and ACI 318-08. It was found that the AISC 360-10 and ACI 318-08 methods overestimated the shear capacity in some cases. The Eurocode method is conservative and can be utilised to predict the shear capacity of demountable connectors in composite structures. The experimental studies of two identical composite beams using demountable shear connectors and welded shear connectors showed very similar moment capacity. However, the specimen with demountable shear connectors was more ductile compared to the welded specimen. The experimental study suggests that the methods available in Eurocode 4 and BS 5950 for predicting moment capacity and mid span deflection can be adopted for composite beam with demountable shear connectors. In addition, a finite element analysis of push off test and beam test with demountable shear connectors was also conducted for parametric studies and results are used to evaluate the behaviour of composite structures.
298

Contribution à la connaissance du processus entrepreneurial au départ de l'Université : étude des représentations au travers des discours de créateurs et acteurs locaux du développement territorial / A contribution to the knowledge of the entrepreneurial process in the spin-off from University

Bares, Franck 07 December 2007 (has links)
This study proposes to contribute to the knowledge of the entrepreneurship from the spin-off from university. It aims to better understand the problems encountered by students and researchers in this process. A qualitative and longitudinal approach allowed for the examination of the performance and the evolutions of the support structures of firm creation in the territory of Nancy. During the five years of study, the behaviours and practices observed between the local territorial development actors changed considerably. This observation has allowed the carrier of innovative projects to integrate the characteristics of the milieu within which they are anchored. The longitudinal approach enabled for the consideration of the management structure within the organisations followed. One of the central elements rests on the analysis of the relationship between the members of the team of creators. This second section treats the different phases of the entrepreneurial situation along with the vision of the entrepreneur. The ensemble of the results sought to shed light on the theory of entrepreneurship and to make practical propositions to creators, public powers, and local actors of territorial development. / Cette recherche se propose de contribuer à la connaissance du processus entrepreneurial au départ de l'Université. Elle vise à mieux connaître les problèmes rencontrés par les créateurs étudiants et chercheurs de "spin-off". L'approche qualitative et longitudinale permet d'approcher tout d'abord les logiques de fonctionnement et les évolutions de l'accompagnement à la création d'entreprises sur le territoire nancéien. Sur près de cinq ans de suivi, les comportements et les pratiques observés entre ces acteurs locaux du développement territorial ont considérablement été modifiés. Ce constat invite les porteurs de projet innovant à intégrer les caractéristiques du milieu auquel ils sont ancrés. L'approche dans la durée permet ensuite d'envisager l'organisation de la conduite interne des entreprises retenues. Un des éléments centraux porte notamment sur l'analyse de la relation entre les membres de l'équipe de créateurs. Cette seconde partie traite des différentes phases de ces situations entrepreneuriales ainsi que de la vision de l'entrepreneur. L'ensemble des résultats observés a pour objet à la fois d'éclairer une lecture théorique et de faire des propositions pratiques aux créateurs, pouvoirs publics et acteurs locaux du développement territorial.
299

Ranking factors to increase your positionon the search engine result page : Theoretical and practical examples

Andersson, Viktor, Lindgren, Daniel January 2017 (has links)
Search engine optimization (SEO) is the way to improve the visibility of a website on thesearch engine result page (SERP). If the website is not on the first three result, then it will bemissing most of the traffic that could be generated. This report will go into detail on how towork with SEO and how to get a website to rank high. Both On-page, how to work with codeand content, and Off-page, how to get more links, methods will be discussed, with a higherfocus on On-page.This paper strives to find what methods and techniques to use with the results gathered fromscientific databases, interviews and three websites with different levels of SEOimplementation. How to structure the code, where and how to use keywords, domain name,links and much more will be discussed in this paper.
300

Comportamento de íons fora de centro em halogenetos alcalinos / Behaviour of off-center ions in alkali halides

Maximo Siu Li 24 November 1978 (has links)
Apresentamos resultados experimentais sobre o comportamento fora de centro do íon de Cu+ em cristais de RbCl, RbBr, RbI, NaI e em cristais mistos de KI +%KCl e KCl +%KI; como também do íon de Ag+ em RbI. Usamos técnicas de absorção ótica no ultra travioleta, corrente termoestimulada (ITC) e dicroísmo induzido por pressão uniaxial. Com estas técnicas, determinamos o comportamento da força do oscilador em dependência com a temperatura, energia de ativação, tempo de relaxação em dependência com a temperatura, momento dos dipolos elétricos, a mudança de configuração do íon de Cu + na reorientação num sistema de multipoço trigonal . puro para um multipoço ortorrómbico no crital misto de KI+1%KCl. Detetamos pela primeira vez a relaxação por ativação térmica de bandas de ITC a temperatura relativamente baixa, como é o caso do íon de Ag+ em RbI que acontece em 24ºK. Ainda, apresentamos alguns resultados sobre o comportamentp do íon de Li + que fica fora de centro no KC1, em cristais de KCl contendo centros U de H- e de D-, usando absorção ótica no infravermelho médio. / Experimental results are given on the off-center behavior of Cu+ ion in RbCl, RbBr, Hbl, NaI and in mixed crystals of KI+%KCl and KCl+%KI, as also on Ag+ in RbI. We use UV optical absorption, ionic thermal current (ITC) and uniaxial stress induced dichroism techniques. It is studied the temperature dependence of the oscillator strength, the relaxation time and the electric dipo1e moment are determined in the above crystals. We observe and discuss the change on the equi1ibrium configuration trigonal of the Cu+ ion in KI to the ortorrhombic in Kl+%KCl mixed crystal. For the first time we detect with the ITC measurements a thermal activated process at low temperature (24ºK), this behaviour occurs in RbI:Ag+. Using mid-infrared absorption measurements, we give several results and discussions on the U centers (either H- or D-) perturbed by Li+ ion in KCl crystals.

Page generated in 0.0192 seconds