• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 2563
  • 1073
  • 779
  • 356
  • 271
  • 251
  • 93
  • 66
  • 54
  • 41
  • 37
  • 36
  • 34
  • 34
  • 32
  • Tagged with
  • 6668
  • 870
  • 779
  • 718
  • 638
  • 577
  • 550
  • 545
  • 406
  • 374
  • 354
  • 343
  • 334
  • 294
  • 260
  • 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.
431

An Electronic Ballast with Automatic Identification of Rated Power for Metal Halide Lamps

Tsai, Wen-Tien 31 July 2008 (has links)
The research searches for an identification strategy which is able to recognize three small-wattage metal halide lamps rated at powers of 20-W, 35-W and 70-W from three world-wide prominent brands of GE, OSRAM and PHILIPS. A two-stage constant-power starting scenario is adopted to successfully start all three kinds of lamps without causing a tremendous power during the identification process. At the first stage, the tested lamps are started by a constant power of 25 W. The 20-W lamps can be distinguished from the others by their relatively high lamp voltages at the 30th seconds after being ignited. Then, the other lamps are driven up to 35 W to manifest the voltage difference of between the 35-W and 70-W lamps, and thus can be recognized at the 40th seconds. After being made out, the lamps are operated at their rated powers. Eventually, a verification checking with protection is introduced to prevent the tested lamps from over power operation. Experiments have been done on numerous new and aged lamps. The experimental results evidence that the electronic ballast with the proposed identification strategy can recognize three lamps¡¦ rated powers correctly during the starting transition, and drive the lamp to its rated power before entering the steady-state.
432

The effect of orgnizational identification on job involvement- a comparison between regular workers and dispatched workers

Lin, Mei-Chun 11 August 2008 (has links)
While enterprises are facing competitions from the business environment, they not only rely on progress and innovation but also should understand how to maintain their competitive advantages in order to survive in the fierce and capricious business world. Nowadays, the labor market has been changing rapidly. Decreasing personnel costs and increasing the flexibility in using manpower is a critical factor contributing enterprises¡¦ adoption of dispatched workers. Ever since the business of dispatched manpower has been legally taking effect in Taiwan in 1999, the business already becomes one of the channels for job seekers to look for appropriate jobs. Moreover, enterprises also take advantage of dispatched workers to look for workers fit for their organizations and meanwhile, cut down costs. However, as dispatched workers are widely accepted, it is important to know how to effectively manage dispatched workers within an organization, how to increase their organizational identification and job involvement and furthermore increase overall work performance. There are numerous studies of dispatched workers, such as studies of the welfare condition and job satisfaction of dispatched workers. This study aims at understanding whether or not dispatched workers have different organizational identification and job involvement due to their different employment status. Research results can serve as references for enterprises to manage dispatched workers. This study targets at the high-tech industry in Taiwan and distributed 620 questionnaires to regular employees and dispatched workers in the high-tech company. There are 440 questionnaires for regular employees and 180 questionnaires for dispatched workers. 305 valid questionnaires were collected. Research results suggest that¡G 1. The regular workers have higher organizational identification than the dispatched workers. 2. The regular workers have higher job involvement than the dispatched workers. 3. There is the significant effect of organizational identification on job involvement. 4. There is the significant difference between the regular workers and the dispatched workers on the effect of organizational identification on job involvement. Key words: organizational identification, job involvement, dispatched worker.
433

Biometrics in practice : The security technology of tomorrow's airports

Salavati, Sadaf January 2006 (has links)
<p>The biometric technology is a method for authentication which has been used since several centuries back. This is a technology which offers several different techniques where the human’s unique characteristics are used for identification and verification of the individual. Biometrics are today at a stage of development that is pointing upwards and many individuals that are well aware of the biometric world believes that this is the technology that will take over the security systems used today.</p><p>Ever since the terror attacks against USA at 2001, USA demanded that all 45 countries that today are not required to have visa when entering the United States must until the end of 2006 implement passports that contains biometrics information. The UN’s air traffic group on the other hand thinks that all counties in the world should use passports with biometric data. The biometric data in the passports are going to be stored in a chip and is in the first hand an image of the individuals face in a cryptic jpg format, but can also be complemented with fingerprints or even signature recognition. Sweden is currently using passports which contain biometric data but so far haven’t any machines that can read this passports been bought. Ulf Hägglund at Precise Biometrics AB believes that as soon as the real use of the biometric passports gets going the biometric technique will be used in a greater extension in the airports.</p><p>Even though several Swedish airports consider the security technique used in airports today being enough, biometrics can increase the security and at the same time simplify many security processes. Falsification can be reduced when at same time one can be sure that the same passenger who has checked-in is the passenger who boards the airplane and the employee security control can be totally automatized. Generally it can be said that “biometrics is a decent way to increase security in different areas”.</p> / <p>Den biometriska teknologin är en äkthetsbevisningsmetod som har används sedan flera århundraden tillbaka. Detta är en teknologi som erbjuder flera olika tekniker där människans unika karateristiska kännetecken används för identifiering och verifiering av individen. Biometrin befinner sig idag i ett utvecklingsstadie som pekar uppåt och flera personer som är insatta i biometrins värld anser att detta är den teknologi som kommer att ta över det nuvarande säkerhetssystemet.</p><p>Sedan terrorattentatet mot USA år 2001 har USA begärt att alla 45 länderna som idag inte behöver visum för att komma in till USA måste innan slutet av år 2006 införa pass som innehåller biometrisk information. FN; s luftfartsgrupp anser däremot att alla världens länder bör införa pass med biometrisk data. Den biometriska data som ska finnas i passen ska lagras i ett chip och är främst en avbildning av individens ansikte i krypterad jpg format men kan även tänkas bli kompletterat med fingeravtryck och eventuellt signatur igenkänning . I dagsläget använder sig Sverige av pass med biometrisk data, men än så länge har inte några maskiner som kan avläsa dessa pass köpts in. Ulf Hägglund på Precise Biometrics AB tror att så snart användandet av de biometriska passen kommer igång på riktigt kommer även den biometiska tekniken att användas i större utsträckning på flygplatser.</p><p>Trotts att flera svenska flygplatser idag anser att den säkerhetsteknik som används på flygplatserna idag räcker, kan man genom att använda sig av biometri öka säkerheten samtidigt som man förenklar många säkerhetsprocesser. Falsifieringen minskar samtidigt som man kan försäkra sig om att det alltid är samma passagerare som checkat- in som stiger på planet och säkerhetskontrollerna för de anställda kan bli total automatiserad. I stort kan man säga att ”biometrin är ett hyggligt steg mot att förbättra säkerheten inom olika områden”.</p>
434

Baba-s und Alekh-s - Askese und Ekstase einer Religion im Werden : vergleichende Untersuchung der asketischen Tradition Mahima Dharma in zwei Distrikten Orissas (Dhenkanal und Koraput) / östliches Indien /

Guzy, Lidia, January 2002 (has links)
Diss.--Politik- und Sozialwissenschaft--Berlin--Freie Universität, 2002. / Bibliogr. p. 315-335. Index.
435

Contribution à la modélisation dynamique d'ordre non entier de la machine asynchrone à cage

Canat, Sylvain Faucher, Jean. January 2005 (has links)
Reproduction de : Thèse de doctorat : Génie électrique : Toulouse, INPT : 2005. / Titre provenant de l'écran-titre. Bibliogr. 38 réf.
436

Etude comparative des empreintes labiales et digitales chez les jumeaux monozygotes

Clerc, Sabine Amador del Valle, Gilles. January 2009 (has links)
Reproduction de : Thèse d'exercice : Chirurgie dentaire : Nantes : 2009. / Bibliogr.
437

Interreligious similarities : predicting differences in religious outgroup bias /

Haji, Reeshma. January 2008 (has links)
Thesis (Ph.D.)--York University, 2008. Graduate Programme in Psychology. / Typescript. Includes bibliographical references (leaves 95-101). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:NR39013
438

Aerial remote radio frequency identification system for small vessel monitoring

Appler, Jason A. Finney, Sean M. McMellon, Michael A. January 2009 (has links) (PDF)
"Submitted in partial fulfillment of the requirements for the degree of Master of Business Administration from the Naval Postgraduate School, December 2009." / Advisor(s): Dew, Nicholas ; Hudgens, Bryan. "December 2009." "MBA Professional report"--Cover. Description based on title screen as viewed on January 26, 2010. Author(s) subject terms: RFID, Radio Frequency Identification, airborne, vessel monitoring. Includes bibliographical references (p. 103-110). Also available in print.
439

Object localization using passive RFID tags

Jayaraman, Ramprabhu, January 2009 (has links)
Thesis (M.S.)--Rutgers University, 2009. / "Graduate Program in Electrical and Computer Engineering." Includes bibliographical references (p. 69-70).
440

Gabor wavelets for human biometrics = Gaibo xiao bo zai ren ti shi bie zhong de ying yong /

Amin, Md. Ashraful. January 2009 (has links) (PDF)
Thesis (Ph.D.)--City University of Hong Kong, 2009. / "Submitted to the Department of Electronic Engineering in partial fulfillment of the requirements for the degree of Doctor of Philosophy." Includes bibliographical references.

Page generated in 0.3202 seconds