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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.
431

Swedish as multiparty work : Tailoring talk in a second language classroom

Åhlund, Anna January 2015 (has links)
This dissertation examines classroom conversations involving refugee and immigrant youth in a second language (L2) introduction program, exploring how L2 Swedish emerges as a multiparty accomplishment by both the teacher and the students. Drawing on forty hours of video-recorded Swedish L2 classroom conversations, as well as on observations and informal interviews, it focuses on talk as a form of social action. Theoretically and methodologically, the dissertation primarily combines insights from language socialization and social constructionist frameworks and detailed transcriptions informed by conversation analysis. Study I documents how schooled Swedish as a second language (SSL) student identities emerged as performative effects of how the students in school activities were addressed as “ethnic” students, and how they managed to handle, adopt, and contest being positioned as the Other. Study II records classroom performances and the formation of a community of practice. The analyses cover how students’ verbal improvisations (repetitions, stylizations, and laughter) and alignments to local registers authenticate SSL identities. The findings show how stylizations were important resources for metalinguistic reflections on correctness, and for the establishment of a local language ideology. Study III documents the interactional nature of classroom repair work. Detailed analyses of correction sequences and trajectories show that both the teacher and the students produced ambiguous other-corrections, illuminating the intricate multiparty work in correction trajectories. In brief, this dissertation illuminates multiparty aspects of classroom L2 socialization. The analyses of classroom talk show how both teacher and student investments in language competencies and local ideologies of correct Swedish or style, as well as participation and identity work, are co-constructed through participants’ tailoring of talk. / <p>At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 1: Manuscript. Paper 3: Accepted.</p>
432

Panoramic distortions : understanding the culture of girls in a military structured residential treatment facility

Hernandez, Jessica, 1982- 16 June 2011 (has links)
Current research on girls and delinquency has brought to awareness the often stressful and traumatic lives of girls. Furthermore, the last three decades have seen an increase in the proportion of girls entering the Juvenile Justice System and an increase in the proportion of girl’s court ordered to attend military structured treatment programs. Developed with boys in mind, many researchers in the area of female delinquency believe that military structured treatment programs are less effectiveness for girls. Thus, the goal of the current study is to consider the experience of girls in a military structured residential treatment facility. Additionally, this study sought to answer the following questions posed by the administrative personnel of this program: 1) Why do staff members report more difficulties when working with the girls? 2) Why are girls more emotionally labile than boys? 3) What changes can be made to the program to increase girls’ success in the program? Participants in this study were referred to a military structured residential treatment program. At the time of the study, four girls, ages 14 to 16, participated in the study. In addition to the girls’ participation, staff members including drill instructors, program officers, teachers, health professionals, and administrative staff participated in the study. The current study utilized an ethnographic approach to explore and identify information that may be useful in better understanding the research questions. The Listening Guide Method (Brown & Gilligan, 1992) was utilized to conduct a narrative analysis of the interviews with both the girls and staff members. Results demonstrated that while in the program, services provided were uneven in both scope and quality. For example, lack of training among staff members resulted in missed opportunities to teach the girls necessary skills that would enable them to tolerate emotional distress while in the program and at home. In order to better meet the needs of the girls, it is recommended that this program strive to integrate both military and therapeutic programming, and educate and train all its staff members in the delivery of gender-responsive programming. / text
433

An analysis of the administration of rewards and punishments in correctional institutions of the Department of Social Welfare

Chan, Yuen-ching, Grace., 陳婉貞. January 1999 (has links)
published_or_final_version / Public Administration / Master / Master of Public Administration
434

The halfway house program in Hong Kong corrections: the case of Phoenix House

Chan, Kin-chung, Mathias., 陳建中. January 1990 (has links)
published_or_final_version / Sociology / Master / Master of Social Sciences
435

Caractérisation vibro-acoustique d'une cascade de distribution poids lourd

Carbonelli, Alexandre 08 November 2012 (has links) (PDF)
L'objectif de ce travail est la compréhension et la modélisation des phénomènes physiques qui gouvernent la réponse vibro-acoustique d'une cascade de distribution de poids lourd. On s'intéresse en particulier au bruit de sirènement d'une cascade de six engrenages, qui correspond à la réponse aux excitations internes générées par le processus d'engrènement et au bruit de claquement, qui correspond à la réponse aux vibro-impacts entre dentures sous charge induits par les fluctuations des efforts extérieurs couplées aux excitations internes. Dans un premier temps, les corrections de denture sont optimisées par une méthode méta-heuristique (essaims particulaires), afin de minimiser les fluctuations des erreurs statiques de transmission en prenant en compte la large plage de couples de fonctionnement et les dispersions géométriques induites par les tolérances de fabrication des engrenages. Le bruit de sirènement est alors modélisé à partir d'une méthode spectrale qui prend en compte le couplage entre les différentes excitations internes de la cascade de dentures. Le gain apporté par l'optimisation des corrections sur le bruit de sirènement de la cascade de dentures a pu être estimé. Dans un second temps, le bruit de claquement est analysé à partir de modèles non linéaires prenant en compte les jeux entre dentures. Une méthode de continuation couplée à une discrétisation par la méthode des différences centrées et une méthode d'intégration temporelle directe sont mises en oeuvre. Le comportement dynamique de la cascade induit par la fluctuation des efforts extérieurs couplée aux excitations internes est complexe : les réponses des différents pignons peuvent être périodiques, pseudo-périodiques ou chaotiques avec possibilité d'observer des pertes de contact multiples, et notamment des chocs entre les flancs rétros des dentures si l'acyclisme moteur est élevé. Les régimes de type vibro-impacts peuvent être établis sur une large plage de vitesses de fonctionnement.
436

Classical and Quantum Descriptions of Proteins, Lipids and Membranes

Tjörnhammar, Richard January 2014 (has links)
In this thesis the properties of proteins and membranes are studied by molecular dynamics simulations. The subject is decomposed into parts addressing free energy calculations in proteins, mechanical inclusion models for lipid bilayers, phase transitions and structural correlations in lipid bilayers and atomistic lipid bilayer models. The work is based on results from large scale computer simulations, quantum mechanical and continuum models. Efficient statistical sampling and the coarseness of the models needed to describe the ordered and disordered states are of central concern. Classical free energy calculations of zinc binding, in metalloproteins, require a quantum mechanical correction in order to obtain realistic binding energies. Classical electrostatic polarisation will influence the binding energy in a large region surrounding the ion and produce reasonable equilibrium structures in the bound state, when compared to experimental evidence. The free energy for inserting a protein into a membrane is calculated with continuum theory. The free energy is assumed quadratic in the mismatch and depend on two elastic constants of the membrane. Under these circumstances, the free energy can then be written as a line tension multiplied by the circumference of the membrane inclusion. The inclusion model and coarse grained particle simulations of the membranes show that the thickness profile around the protein will be an exponentially damped oscillation. Coarse-grained particle simulations of model membranes containing mixtures of phospholipid and cholesterol molecules at different conditions were performed. The gel-to-liquid crystalline phase transition is successively weakened with increasing amounts of cholesterol without disappearing even at a concentration of cholesterol as high as 60%. A united atom parameterization of diacyl lipids was constructed. The aim was to construct a new force field that retains and improves the good agreement for the fluid phase and at the same time produces a gel phase at low temperatures, with properties coherent with experimental findings. The global bilayer tilt obtains an azimuthal value of 31◦ and is aligned between lattice vectors in the bilayer plane. It is also shown that the model yield a correct heat of melting as well as heat capacities in the fluid and gel phase of DPPC. / <p>QC 20140919</p>
437

Coannihilation neutralino-stop dans le MSSM : violation de saveur, corrections radiatives et leur impact sur la densité relique de matière noire

Le Boulc'h, Quentin 23 September 2013 (has links) (PDF)
Le Modèle Standard Supersymétrique Minimal (MSSM), le plus étudié des modèles de Nouvelle Physique, contient un candidat à la matière noire : le neutralino. Un des mécanismes qui permet de réduire la densité relique de neutralino jusqu'à l'intervalle expérimental de WMAP et de Planck est la coannihilation entre le neutralino et le stop. Dans cette thèse nous étudions deux aspects différents liés à la prédiction de la densité relique dans la région de coannihilation neutralino-stop, ainsi qu'au calcul des sections efficaces d'annihilation et de coannihilation correspondantes. Nous présentons tout d'abord la matière noire en tant que WIMP ainsi que le Modèle Standard de la Physique des Particules, puis nous abordons le MSSM ainsi la phénoménologie de la densité relique de neutralino. Nous étudions ensuite la phénoménologie de la violation de saveur non minimale dans le secteur des squarks dans le contexte de la densité relique de neutralino. Nous considérons des termes violant la saveur dans le secteur des squarks up et down de chiralité droite et de troisième génération et montrons qu'ils peuvent avoir un impact important sur les sections efficaces d'annihilation et de coannihilation du neutralino, et en conséquence sur la densité relique. Finalement, nous nous intéressons à la possibilité d'améliorer la précision avec laquelle la densité relique est prédite, en calculant les sections efficaces d'annihilation et de coannihilation à l'ordre supérieur dans la théorie des perturbation. En se basant sur des travaux antérieurs qui ont montré que l'impact des corrections SUSY-QCD à une boucle pour l'annihilation de neutralino était supérieur à l'incertitude expérimentale, nous avons calculé de telles corrections dans le cas de la coannihilaiton neutralino-stop en bosons de jauge électrofaibles et bosons de Higgs.
438

Diagnosing dementia with cognitive tests: are demographic corrections useful?

O'Connell, Megan Eleine 02 January 2008 (has links)
Diagnostic biases against individuals of advanced age or few years of formal education exist because age and education are commonly related to performance on cognitive tests, thus, demographic corrections for these tests are used. Corrections are complicated, however, by an association between demographic variables and dementia diagnoses. This dissertation examined the dementia diagnostic accuracy of demographic corrections for cognitive tests. Experiment I tested whether, in the context of skewed tests that violate the statistical assumptions of linearity and homoscedasticity, the accuracy of demographically-corrected test scores would be reduced. Experiment II tested whether demographic corrections would only be appropriate for biased factors instead of the total score for multifactorial tests. Experiment III explored whether demographic corrections would be inappropriate under conditions where the dementia pathology overrides the association between cognitive test scores and demographic variables. Experiment IV explored whether demographic corrections would be inappropriate in conditions where the demographic variables were, in themselves, risk factors for dementia, as this would remove predictive variance. Experiment V explored aspects particular to regression-based demographic corrections that might adversely affect diagnostic accuracy. Experiments I to V were simulation-based; consequently Experiment VI explored replication of these findings using regression adjusted scores in a previously collected clinical database. Finally, Experiment VII used clinical data in conjunction with published clinical normative data with demographic-stratification to test the generalizability of these findings to clinical practice. Using area under the receiver operating characteristic curve comparisons, the use of demographically-corrected scores repeatedly failed to improve upon the dementia diagnostic accuracy of uncorrected cognitive test scores, regardless of whether these corrections were regression-based or based on demographically stratified normative data. Demographic corrections reduced dementia diagnostic accuracy when cognitive test scores were skewed or when adjustments were regression-based and demographic variables were risk factors for dementia. The use of demographic corrections when dementia pathology supersedes any association between cognitive test scores and demographic variables does not impact the relative diagnostic accuracy of demographically-corrected versus uncorrected test scores. Overall, these results suggest that the use of demographic corrections for cognitive test scores is highly cautioned when the goal is to maximize dementia diagnostic accuracy.
439

Gladue through wahkotowin: social history through cree kinship lens in corrections and parole

2013 March 1900 (has links)
ABSTRACT This thesis explores the R. v. Gladue (1999) decision and whether it is applicable to federal corrections and parole release. I outline a Cree relational approach—wahkotowin—that can be employed as a Gladue method of analysis to help us understand Cree history through a kinship relational lens. In Chapter 1, I share an overview of the teachings of wahkotowin, as taught by knowledge keeper and respected author Maria Campbell. With the help of her circle teachings diagrams, I outline our relationships and obligations to one another. I also outline the shattering of wahkotowin through imposed colonial and present-day policies, programs, and legislation, and the resulting inherited intergenerational trauma. Chapter 2 locates my personal story, exploring family and community history, and its connection with First Nations and Métis history on the prairies. Chapter 3 reviews the Supreme Court of Canada’s R. v. Gladue and R. v. Ipeelee (2012) decisions, the duty to properly consider the unique social history of Aboriginal peoples, and the applicability of Gladue to section 84 of the Corrections and Conditional Release Act. Chapter 4 outlines the qualitative data, including interviews with legal experts working with Aboriginal Legal Services of Toronto and the Gladue Court. The data explore best practices of interviewing, researching, and report writing necessary for obtaining Gladue evidence. In Chapter 5, I propose a Gladue-through-wahkotowin approach that explores how Gladue’s duty to consider social history evidence can be expanded to all phases of the criminal justice system, from sentencing to parole release, and can include a Cree relationship-based way of interviewing an offender, carrying out in-depth family and community interviews, attaining oral and documentary historical research, and applying a broad Indigenous approach to interviewing and the writing of Gladue Reports.
440

Magnetic Properties Studied by Density Functional Calculations Including Orbital Polarisation Corrections

Neise, Carsten 20 July 2011 (has links) (PDF)
Mit Hilfe der Dichtefunktionaltheorie wurden magnetische Eigenschaften an 3d Elementen und Legierungen und 5f Verbindungen untersucht. Dabei wurde auf die Wichtigkeit von Orbitalpolarisationskorrekturen eingegangen und diese näher erörtert. Im ersten Anwendungsteil wurden magnetische Momente und die Magnetokristalline Anisotropie Energie an 3d Elementen untersucht. Des Weiteren wurden FeCo Legierungen als mögliche Bestandteile in der Festplattenindustrie diskutiert. Im letzten Abschnitt wurden Uranverbindungen in Hinsicht auf Ihre Orbitalpolarisation untersucht.

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