• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 226275
  • 52774
  • 51272
  • 29308
  • 24846
  • 21510
  • 8183
  • 4474
  • 3404
  • 3036
  • 1932
  • 1862
  • 950
  • 922
  • Tagged with
  • 107186
  • 49579
  • 48692
  • 34925
  • 33579
  • 32291
  • 18445
  • 18105
  • 16702
  • 12839
  • 12796
  • 12746
  • 11770
  • 10991
  • 10449
  • 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

Rol van die biblioteek in 'n probleemgebaseerde leer-kurrikulum

Lombard, Huibrecht Christiana 01 1900 (has links)
Information Science / M. A. (Information Science)
2

Wavefront aberration correction in medical ultrasound imaging

Varslot, Trond January 2004 (has links)
<p>Medisinsk ultralydavbildning er et relativt rimelig verktøy som er i utstrakte bruk på dagens sykehus og tildels også legekontor. En underliggende antakelse ved dagens avbildningsteknikker er at vevet som skal avbildes i grove trekk er homogent. Det vil i praksis si at de akustiske egenskapene varierer lite. I tilfeller der denne forutsetningen ikke holder vil resultatet bli betraktlig reduksjon av bildekvaliteten. Prosjektet har fokusert på hvordan man best mulig kan korrigere for denne kvalitetsforringelsen. Arbeidet har resultert i et styrket teoretisk rammeverk for modellering, programvare for numerisk simulering. Rammeverket gir en felles forankring for tidligere publiserte metoder som "time-reversal mirror", "beamsum-correlation" og "speckle brightness", og gir derfor en utvidet forståelse av disse metodene. Videre har en ny metode blitt utviklet basert på egenfunksjonsanalyse av et stokastisk tilbakespredt lydfelt. Denne metoden vil potensielt kunne håndtere sterk spredning fra områder utenfor hovedaksen til ultralydstrålen på en bedre måte enn tidligere metoder. Arbeidet er utført ved Institutt for matematiske fag, NTNU, med professor Harald Krogstad, Institutt for matematiske fag, som hovedveileder og professor Bjørn Angelsen, Institutt for sirkulasjon og bildediagnostikk, som medveileder.</p>
3

Collected studies

Noakes, Timothy January 2002 (has links)
Includes bibliographical references. / A collection of published studies establishing the central governor model of exercise physiology, and the aetiology of the hyponatraemia of exercise.
4

La décision médicale / The medical decision

Veron, Paul 09 December 2015 (has links)
La relation médicale est traditionnellement abordée par la doctrine privatiste au prisme de la figure du contrat. Cette étude vise à proposer une lecture renouvelée, centrée sur un autre paradigme : la décision. L’ordre juridique ne régit pas tant un accord de volontés créateur d’obligations qu’une décision de soins ayant pour objet la réalisation d’un acte médical sur la personne d’un patient, avant tout saisi comme personne humaine. La démarche peut a priori se réclamer d’un certain bon sens : la médecine n’est-elle pas, au fond, avant tout un art – en partie devenu une science – de la décision ? L’approche du concept de décision dans le champ du droit médical impose cependant de s’émanciper de la signification dominante accordée à ce terme dans les diverses disciplines juridiques. Figure bien connue du droit public et du droit processuel, émergente endroit privé, la décision est très largement assimilée à l’acte juridique unilatéral. Une telle conception stricte ne saurait prévaloir pour appréhender notre objet d’étude : d’une part, la décision médicale n’est pas un acte juridique ; d’autre part, elle peut être unilatérale ou bilatérale, individuelle ou partagée. Il apparaît alors préférable, en droit médical, d’en revenir à l’une des significations courantes du terme de décision, non proprement juridique : elle est un processus de choix orienté vers la réalisation d’une action. La manière dont le droit appréhende la décision médicale peut être résumée en quatre questionnements. Qui décide ? C’est la question de l’identification des décideurs. Comment la décision doit-elle être prise ? C’est la question de la procédure décisionnelle. Pourquoi et pour quoi une décision est-elle prise ? C’est la question des motifs et des finalités qui fondent et orientent la décision médicale. Enfin, que peut-on décider ? Quels moyens peut-on mettre en œuvre pour soigner ? C’est la question de l’objet de la décision. Alors que les deux premiers points sont relatifs à la prise de décision, les deux derniers se rapportent à la décision prise. Cette approche présente essentiellement un double intérêt. D’une part, elle offre un modèle de lecture unique de la relation de soins, quel que soit le contexte de la prise en charge (hôpital public, clinique privée ou médecine libérale), ce qui apparaît nécessaire au vu des évolutions juridiques de ces deux dernières décennies. D’autre part, elle permet d’inscrire la relation médicale dans une théorie du pouvoir, la décision médicale s’analysant, sous cet angle, comme l’expression d’une puissance privée. / The medical relationship is traditionally addressed by the private law academia through the prism of the of the contract concept. In line with another part of the academia, this study aims to put forth a renewed reading, centered on another paradigm: the decision. The law does not govern here a meeting of minds producing obligations but rather a care decision whose purpose is performing a medical procedure on a patient, primarily taken as a human being. The approach can a priori rest on a certain degree of common sense: isn’t medicine, after all, primarily an art – which partly became a science – of the decision?To approach the concept of decision in the field of medical law requires to give up the dominant meaning given to that term in the various legal disciplines. Well-known figure of public law and procedural law, emerging in private law, the notion of decision is largely identified with a unilateral legal action. Such strict interpretation cannot prevail for understanding our object of study: first, the medical decision is not a legal action; secondly, it may be unilateral or bilateral, or, to be precise, it can be individual or shared. It appears to be preferable, in the field of medical law, to return to a common meaning of this notion of decision, as opposed to strictly legal: it is a selecting process geared towards the implementation of a deed.The way the law addresses a medical decision can be summarized in four questions : Who decides? Addressing the issue of identifying the decision makers. How should the decision be taken? Addressing the decision-making procedure. Why and to what aim is a decision taken? Addressing the question of reasons and purposes on which the medical decision is based. Finally, what can we decide? Which means can we implement to cure? This addresses the question of the purpose of the decision. While the first two points are related to the process of decision-making, the last two refer to the issue of decision taken.This approach essentially has dual benefits. First, it offers a unique mean of interpreting the medical care relationship, regardless of the context (public hospital, private clinic or private practice), which appears necessary in view of the legal developments in the last two decades. Second, it allows the conceptualisation of the medical relationship in a theory of power, medical decisions being analysed, in this aspect, as the expression of private power.
5

Medical rehabilitation

Sommerville, J. G. January 1958 (has links)
No description available.
6

Caring machines : Emerging practices of work and coordination in the use of medical emergency communication technology

Tjora, Aksel Hagen January 1997 (has links)
<p>Stadig mer forskning fokuserer på utviklingen og bruken av teknologi, ikke minst i forbindelse med den stadige mer utbredte bruken av informasjons- og kommunikasjonsteknologi. Mange av disse studiene har vært motivert av ønsket om å vise til de fantastiske mulighetene som organisasjoner (særlig bedrifter) har ved å nyttiggjøre seg nyvinningene (se f.eks. Davidow og Malone, 1992 og Scott Morton, 1991). Mange samfunnsvitenskapelige studier har imidlertid inntatt en mye mer kritisk holdning til de teknologiske nyvinningene. Innenfor sosiologien er det flere slike tilnærminger.</p><p><b>Sosiologiske perspektiver på teknologi</b></p><p>I de funksjonalistiske tilnærmingene fokuseres det på hvilke effekter de tekniske systemene har på brukerne av dem, og spesielt hvordan alle systemer medfører uintenderte konsekvenser, blant annet ved at de nye systemenes <i>latente funksjoner</i> (Merton, 1967) trer fram i dagen etterhvert som systemene kommer i bruk. I disse studiene betrakter man de tekniske systemene som makrostrukturer som følger sin egen utvikling mer eller mindre uavhengig av brukerne (dvs de er teknologideterministiske). </p><p>I Marxistiske tilnærminger unngår man en ensidig determinisme ved at teknologiene antas å være i <i>dialektisk</i> motsetning til de sosiale systemene. Spesielt betraktes teknologiske nyvinninger som kapitalistenes middel for å beholde sitt herredømme over arbeiderklassen. I nyere perspektiver (se f.eks. Winner, 1977; 1986, Hirschorn, 1984; Feenberg, 1991) påpeker man at det er de <i>kulturelle</i> <i>verdiene</i> som er knyttet til teknologidesign som medfører uheldige konsekvenser (som for eksempel degradering av arbeidskraft), og ikke teknologien i seg selv.</p><p>Tilsvarende fokuserer de sosialkonstruktivistiske studiene (Bijker, Hughes og Pinch, 1987; Bijker og Law, 1992; Law, 1991) på hvordan den teknologiske utviklingen eller de teknologiske nnovasjonene ikke følger naturlige utviklingsveier, men konstrueres i nettverk av aktører som hver på sin måte presser fram sine interesser i forhold til et teknologisk artefakt. Mange av konstruktivistene benekter et skille mellom tekniske og sosiale systemer (eller aktører). De mener at det er umulig å egentlig separere det tekniske og sosiale, og velger i stedet å betrakte de totale relasjonene som et <i>sømløst vev</i>. Konstruktivistene bruker spesielt historiske studier av teknologi-utvikling for å identifisere aktører i slike vev, og dermed undersøke hva som ligger bak de løsninger som velges i utviklingen av tekniske artefakter.</p><p>I de senere årene er det blitt flere forskere som ved å bruke etnografiske studier av teknologisk praksis undersøker hvordan tekniske og sosiale aktører samhandler. I disse studiene er man i motsetning til de konstruktivistiske tilnærmingene mer opptatt av bruken av teknologi enn utviklingen av den. Men i samme ånd som konstruktivistene er man opptatt av å vise hvordan den teknologiske praksis i sterk grad utvikles ved hjelp av sosiale mekanismer, for eksempel i arbeidsgrupper, og hvordan tekniske praksisimperativer rekonstrueres i daglig sosial praksis (se f.eks. Suchman, 1987; Hutchins, 1988; 1990; 1995; Hutchins og Klausen, 1996; Heath og Luff, 1992; 1996; Orr, 1996; Engeström og Middleton, 1996).</p><p>Alle disse tilnærmingene har viktige bidrag til sosiologiske studier av utvikling og bruk av teknologi. Imidlertid ser det ut til at det er vanskelig å skape en teoretisk syntese av teorier som bygger på såpass forskjellige antakelser. I denne avhandlingen kombinerer jeg imidlertid deler fra teoriene ved et feltstudium der én type teknologi benyttes i flere ulike kontekster, slik at både aktør-perspektiver og struktur-perspektiver blir relevante. Et empirisk felt som gir denne muligheten er bruken av <i>medisinske nødmeldesentraler </i>i Norge.</p> / <p>The study of technology has recently become more focused in various schools of sociology. However, Marxist, functionalist, social constructivist, and ethnographic research, have tended to explain technological development either from macro or micro perspectives. Further research is needed to increase our understanding of technology as situated in its social and institutional contexts, where individual and professional relations are considered. In this thesis, elements from several approaches are applied to the study of communication technology in Norwegian medical emergency communication centres.</p><p>About ten years ago, LV (doctor-on-call) centres, each manned by one nurse to handle local requests for a doctor, were established in nursing homes. AMK (acute medical communication) centres were introduced in hospitals, and are manned by teams of two to four nurses and ambulance coordinators to handle medical emergency calls (113), internal hospital alarms and local requests for a doctor. Even though the intensity and work loads are very different between the LV and AMK centres, the technical artefacts that are used are basically similar in both types of centre.</p><p>Using a comparative case approach, the use of technology was studied through interviews with nurses, doctors and administrative personnel and by observations of the work in six LV and three AMK centres.</p><p>There are three main findings in this thesis. First, the operation of LV centres in nursing homes conflicts with the general nursing home practice, and many LV centres are redefined by its users as switchboards to decrease the burden that is placed upon them.</p><p>Second, the nurses who work with requests for doctors in a similar way in the AMK centres in fact manage to solve many problems on the phone. The thesis discusses how these differences have emerged from performing the same job with the same technological tools.</p><p>Third, the handling of emergency calls at the AMK centres is accomplished through intense social and technically coordinated work. An ideal model of this kind of coordination, “the coordinated climate”, is developed from the observations in the AMK centres, and results from control room studies are applied.</p><p>The three findings are summarised in a discussion of how structures constrain and facilitate social and technological practice.</p>
7

Die rol van die biblioteek in 'n probleemgebaseerde leer-kurrikulum

Lombard, Huibrecht Christiana 01 1900 (has links)
Information Science / M. A. (Information Science)
8

Etude de l'aspect génétique des irradiations médicales

Wagner, Robert January 1977 (has links)
Doctorat en Sciences / info:eu-repo/semantics/nonPublished
9

The detection of drug resistant mutations in mycobacterium tuberculosis strains using anyplex MTB/NTM/MDR-TB plus assay in Limpopo Province

Mpanyane, Disego Mmatau January 2015 (has links)
Thesis (MSc. (Medical Sciences)) -- University of Limpopo, 2015 / Introduction: Multidrug-resistant tuberculosis (MDR-TB) caused by resistance to at least rifampicin (RIF) and isoniazid (INH) drugs is a growing public health concern in South Africa. The detection of MDR-TB still relies on culture despite advancement in molecular diagnostic technology. Currently MTBDRplus and GeneXpert are the only available assays used in rapid diagnosis of MDR-TB using chromosomal mutations in drug target regions. Some strains are missed by these assays due to their limitation in mutational detection profile. Novel Seegene Anyplex assays simultaneously detect TB and resistance to RIF and INH using fifteen and six mutational probes, respectively within 3 hours. Limpopo Province has limited information on the circulating strains of TB. Aim: To determine drug-resistant Mycobacterium tuberculosis (M. tuberculosis) mutations using Anyplex™ MTB/NTM/MDR-TB real time assay and characterise the drug-resistant strains. Methods: We prospectively collected 204 clinical samples at Modimolle MDR-TB unit and retrospectively used 104 culture isolates from MRC laboratory in Pretoria. The MTBDRplus assay was used to screen for M. tuberculosis and drug resistant mutations to RIF and INH drugs. Anyplex™ MTB/NTM/MDR-TB assay was used for rapid detection of M. tuberculosis and drug resistance to RIF and INH within 3 hours. The discordance between phenotypic and genotypic assays was resolved by sequencing and the Anyplex™ resistant profiles were spoligotyped. Diagnostic data was collected from NHLS and MRC databases and analysed using the Microsoft excel and Epi Info version 3.5. Descriptive statistics (percentages and frequencies) were used to explain proportions. Results: The Anyplex™ MTB/NTM assay detected M. tuberculosis in 69/111(62%) and 100/104 (96%) of clinical and culture samples respectively. The sensitivities, specificity, PPV and NPV obtained for both RIF and INH resistance by Anyplex™ MDR-TB assay were 67%, 59%, 67%, 55% and 15%, 100%, 100% and 17%, respectively. Anyplex™ MTB/NTM/MDR-TB resolved 23/45 (51%) of discordant vi samples. Sequencing of remaining discordant isolates revealed L511P, L533P and D516Y mutations within rpoB gene. A novel R385W mutation within katG was also detected. Spoligotyping of Anyplex™ MDR-TB resistant clinical isolates revealed Euro American clade with 20% followed by 15% Manu2, 5% East African Indian, 5% H37Rv, 5% atypical and 50% were orphans. Conclusion: The novel Anyplex™ MTB/NTM/MDR-TB assay is a rapid and valid technique for detecting M. tuberculosis and most common mutations conferring resistance to RIF and INH. However further investigations are required, as the assay has a lower sensitivity as compared to already endorsed techniques. / National Research Foundation (NRF) and University of Limpopo TB Grant
10

Lexical macrostructure in science text

Phillips, M. K. January 1983 (has links)
No description available.

Page generated in 0.5484 seconds