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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.
181

A regression modeling approach for describing patterns of HIV genetic variation /

Hamblett, Nicole Mayer. January 1999 (has links)
Thesis (Ph. D.)--University of Washington, 1999. / Vita. Includes bibliographical references (p. 121-128).
182

Molecular evidence of intraclonal variation and implications for adaptational traits of grape phylloxera populations (Daktulosphaira vitifoliae, Fitch)

Vorwerk, Sonja, January 2007 (has links)
Hohenheim, Univ., Diss., 2007.
183

Differentiation of sibling species in the ant genus Aphaenogaster; karyotypic, electrophoretic, and morphometric investigations of the Fulva-Rudis-Texana complex.

Umphrey, Gary John, Carleton University. Dissertation. Biology. January 1992 (has links)
Thesis (Ph. D.)--Carleton University, 1992. / Also available in electronic format on the Internet.
184

Mutabiliteit en Variabiliteit

Schouten, Albert Reinard. January 1908 (has links)
Thesis--Universiteit van Amsterdam.
185

Korrelations- und vererbungs-erscheinungen beim roggen, insbesondere die kornfarbe betreiffend ...

Geerkens, August Ferdinand, January 1901 (has links)
Inaug.-dis.--Jena. / Lebenslauf.
186

On the boundedness character of third-order rational difference equations /

Quinn, Eugene P. January 2006 (has links)
Thesis (Ph. D.)--University of Rhode Island, 2006. / Includes bibliographical references (leaves 175-178).
187

Implications of Longterm Diameter-Limit Harvesting: Effects on Radial Growth of Red Spruce (Picea rubens) and Genetic Diversity of White Pine (Pinus strobus)

Sokol, Kerry Ann January 2001 (has links) (PDF)
No description available.
188

La fluctuation en genre grammatical des substantifs inanimés en vieil-anglais / Grammatical gender variation in Old English inanimate nouns

Kharlamenko, Oxana 06 March 2015 (has links)
L’existence de noms vieil-anglais au genre variable a été signalée encore à la fin du 19e siècle. Alors que le nombre de noms assignés à plusieurs genres dans les dictionnaires du vieil-anglais est très élevé, il n’existe presque aucune étude approfondie du phénomène. La présente thèse tente de répondre à des questions de ce que l'on désigne comme les noms au genre variable, comment ces noms se distinguent d’autres types de fluctuation dans les documents en vieil-anglais et de ce qui se trouve à l’origine de la variation en genre.Après avoir défini la notion de l’accord et son expression dans les marqueurs, on propose une étude détaillée de toutes les occurrences de trente-six emprunts faits au latin et au vieux-norrois d’une part, et de soixante-dix-huit noms indigènes d’autre part, tous assignés à plusieurs genres dans les dictionnaires. Constatant des évolutions parfois importantes dans l’emploi des marqueurs en discours, on cherche à déterminer s’ils interviennent dans la décision des lexicographes ou s’ils reflètent une variabilité interne aux noms étudiés. La variation se présente ainsi sous deux angles et s’explique à travers deux notions, celle du désaccord, où tout lien entre le nom-contrôleur et les cibles d’accord est rompu, et celle de la variabilité, qui soutient le lien d’accord sur le plan cognitif et permet la transition d’un genre à l’autre selon le choix de l’énonciateur. / The existence of nouns of variable genre in Old English was brought to the linguistic community’s attention at the end of the 19th century. Despite the rather high number of nouns assigned to several genders in dictionaries dealing with Old English, to date there has been no substantial study of the phenomenon. This thesis is a usage-based study that explores the notion of nouns of variable gender by distinguishing them from other types of gender-variation in Old English texts. It also explores in detail the factors behind various grammatical gender assignments.It departs from the notion of agreement and its expression in gender-sensitive markers. A corpus of a hundred and fourteen nouns assigned to several genders in the dictionaries – seventy-eight native and thirty-six borrowed from Latin and Old Norse – are analysed in context in order to identify the various factors that influence the lexicographers’ decision-making. Some important developments in the usage of the formerly gender-sensitive markers in the discourse might have influenced the latter to a certain degree. Or, they might be a reflection of variability as an internal feature of the nouns analysed. This study deals with the notion of variation as a cover-term for disagreement, which reflects the discontinuity of the link between a controller and its agreement targets, and, on the other hand, for variability, maintaining the agreement on the cognitive level and allowing the transition from one gender to the other depending on the choice of the speaker.
189

Aspects of Grammatical Variation in Jordanian Arabic

Al-Shawashreh, Ekab January 2016 (has links)
This study investigates some aspects of grammatical variation in vernacular Jordanian Arabic (JA), namely word order variation and pro(noun)-drop variation. Much previous research on word order and subject expression in Arabic has been hampered by the use of eclectic methodologies (Bakir 1980; Eid 1983; El-Yasin 1985; Fassi Fehri 1993; Aoun & Li 1993; Brustad 2000). Conspicuously rare in contemporary studies of syntactic variation in Arabic are systematic analyses of spontaneous speech data (Edwards 2010: 94; but see e.g., Owens, Dodsworth & Rockwood 2009; Owens, Dodsworth & Kohn 2013). The dearth of quantitative studies of word order variation, as well as pro-drop variation, in colloquial Arabic provides the primary motivation for the present investigation. Drawing on the framework of variationist sociolinguistics (Labov 1972), I conduct an accountable analysis of word order variation, as well as pro-drop variation in a corpus of vernacular Jordanian Arabic recorded in the Irbid metropolitan area in 2014. The corpus is based on over 30 hours of digitized recordings obtained from 30 speakers stratified by age, sex, education, as well as urban/rural origin. I exploit these spontaneous speech data to: (i) assess the frequency of different word order and pro-drop variants in vernacular JA; (ii) ascertain which social and linguistic factors constrain the selection of major word order and pro-drop variants; and (iii) determine whether the apparent time component incorporated into the research design reveals any evidence of change in progress. Distributional and multivariate analyses of 4500 tokens (2049 for word order and 2422 for pro-drop) coded for the aforementioned social factors, in addition to an array of linguistic factors hypothesized to constrain variant choice (e.g., morphloexical class of subject, grammatical person and number, type of clause and transitivity) confirm that word order variation, as well as pro-drop variation, are subject to multiple constraints (Holes 1995; Owens et al. 2013). A first important finding concerns the quantitative preponderance of SV(O) word order in vernacular JA, which competes with less frequent VS(O). Another important finding is that null subject pronouns are the norm in vernacular JA. Statistical analyses of the linguistic factors conditioning the observed variability reveal that transitivity and definite subject pronouns are key predictors of SV(O) word order choice, while switch reference and person and number of subject are key predictors of overt subject pronouns, as determined by the relative magnitude of these effects. Particularly compelling is the social embedding of the variation in the case of word order variation. Age- and sex-differentiations in the data (Labov 1990), in addition to urban-rural split, reveal statistically significant differences, offering provisional indications that alternation between SV(O) and VS(O) word orders is implicated in ongoing change. Younger speakers, women and urban-origin speakers lead in the use of SV(O). The results foreground the utility of empirically accountable analyses of spontaneous speech in elucidating key issues relating to syntactic variation in modern varieties of spoken Arabic. The results generated by this approach reveal new findings not previously available from the intuited, elicited or written material on which much previous work on Arabic has been based.
190

Variation dialectale et orthographique en romani : étude à partir d'une page du réseaux social Facebook / Dialectal and orthographic variation in Romani language : study on a page from the Facebook social network site

Lecharpentier, Coralie 18 December 2018 (has links)
Le romani, ou romanes, est une langue parlée historiquement par des communautés qui s’autodénomment « Roms », « Sintos » et « Calos ». Dans cette thèse, on se propose d'analyser une page du réseau social Facebook, comportant de nombreux messages en langue romani. Dans un premier temps, nous identifierons les dialectes présents sur la page et étudierons la diversité des pratiques orthographiques. Puis, on analysera comment la variation est prise en compte par les locuteurs, en évoquant les problématiques d'intercompréhension, d'identité et de revitalisation. Le but de notre recherche est de faire un état des lieux des besoins, réussites et représentations des locuteurs du romani afin d’accompagner ce qui pourrait être un processus d’autogestion langagière. / Romani, also known as Romanes, is a language historically spoken by communities who call themselves “Roma”, “Sinti” and “Kalo”. The purpose of this thesis is to study a page of the social network Facebook which includes many messages written in Romani language. First of all, we will identify the dialects used on the page and we will describe the diversity of spelling practices. Then, we wil analyze the way variation is taken into account by the speakers, discussing the issues of mutual understanding, identity and revitalization. Our research focuses on determining the needs, successes and representations of the Romani speakers in order to support a possible linguistic self-management.

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