Dissertations / Theses on the topic 'Group-up'
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Selvaraj, Poorani. "Group Method of Data Handling – How Does it Measure Up?" Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1479421385631538.
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Zhang, Xiao, and 張曉. "Who will make up for weaknesses?: motivational effects of group norms, identification, and ability." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43085398.
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Jervis, Teresa Ann. "Picking up the pieces : a group therapy plan for adult survivors of childhood incest." Thesis, Kansas State University, 1986. http://hdl.handle.net/2097/9922.
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Zhang, Xiao. "Who will make up for weaknesses? motivational effects of group norms, identification, and ability /." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43085398.
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Dabrowski, J. M. "A 12-month follow-up study evaluating group interventions for children with Tourette Syndrome." Thesis, University College London (University of London), 2016. http://discovery.ucl.ac.uk/1517979/.
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This thesis consists of three parts: a systematic literature review, an empirical paper and a critical appraisal. It aims to contribute to the evidence base for psychological interventions for Tourette Syndrome (TS). TS is a neurodevelopmental condition characterised by the presence of both motor and vocal tics. Tics typically first present in childhood and are associated with psychiatric co-morbidity, social and emotional difficulties, impaired school functioning and a diminished quality of life. The literature review explores the efficacy and effectiveness of currently available psychological interventions for TS. It reviews both traditional behavioural approaches as well as newer adaptations of existing treatment protocols. The empirical paper evaluates the long-term outcomes of two group treatments (Comprehensive Behavioural Intervention for Tics and psychoeducation) for children with TS. It assesses the effect of these treatments on tic severity, neuropsychological functioning, quality of life and school attendance. Finally, the critical appraisal reflects on the process of conducting the research study. Specifically, it comments on the unique advantages and disadvantages of joining a larger research project, further explores the strengths and limitations of the study’s methodology and finally reflects on the experience of working with children with a neurodevelopmental disorder.
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Zhang, Jingshu Ph D. Massachusetts Institute of Technology. "A bottom-up prospective dynamic materials flow assessment for platinum group metals (PGM) global demand forecast." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/93048.
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Thesis: S.M., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2014.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 71-77).
by Jingshu Zhang.
S.M.
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Reichstein, Z., B. Youssin, and zinovy@math orst edu. "Equivariant Resolution of Points of Indeterminacy." ESI preprints, 2000. ftp://ftp.esi.ac.at/pub/Preprints/esi943.ps.
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Aharon, Sara. "Addiction-specific support group use, personality characteristics and recovery status in substance abusers, a follow-up study." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ49799.pdf.
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Firth, David. "An algorithm to find normal subgroups of a finitely presented group, up to a given finite index." Thesis, University of Warwick, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417029.
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Seth, Ernest L. "FASPEC, a program to determine group constants for up to 47 groups in a fast neutron spectrum." Thesis, Virginia Tech, 1985. http://hdl.handle.net/10919/45665.
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In reactor core design, a gap exists between the manual calculation of few-group constants and the many-group calculation, by large computer programs. A method is needed by which group constants may be calculated easily and quickly. The FASPEC program is designed to reduce the amount of manual calculation and to complement the large program by reducing the number of times the large program must be run to achieve desired results.
The program calculates group constants from 940 microgroups, collapsing to any user-specified number of macrogroups up to 47. FASPEC is based on group-averaged flux calculations by a solution of the Infinite medium neutron transport equation. Flux contributions from inelastic scatter are included while those from neutron upâ scatter are not. The energy spectrum considered is from 10 MeV to 0.625 eV. Required input is the atomic number density of each isotope, the number of macrogroups desired and the upper and lower microgroup numbers of each macrogroup. Input is facilitated by prompting in each case. Cross section look-up tables were provided by the Very Improved Monte Carlo code (VIM) for a mid-range Infinite hexagonal lattice. Self-shielding effects are included indirectly. A brief user's guide is provided.
Group constants calculated and stored for either terminal display or printed output are group number, lowest energy of the group, macroscopic removal cross section, macroscopic absorption cross section, diffusion coefficient, flux, macroscopic fission cross section, v, the average number of neutrons emitted per fission, and vΣf.
Master of Science
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Sharp, Sarah Elizabeth. "Digging up the kirkyard : death, readership and nation in the writings of the 'Blackwood's group', 1817-1839." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/31030.
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This dissertation examines the use of images of graveyards and death in the writings of the ‘Blackwood’s group’, a coterie of authors and poets who published their writing either within the influential Tory periodical Blackwood’s Edinburgh Magazine or with the publisher William Blackwood and Sons in the early decades of the nineteenth century. I argue that Blackwoodian texts like Lights and Shadows of Scottish Life (1822) by John Wilson imagined the rural Scottish graveyard as a repository for the traditional values and social structures which appeared to be under threat in the rapidly modernising British nation. In these texts the kirkyard functions as a key symbolic space, creating an imagined national ‘home’ for British readers in the idealised Scottish village graveyard. This nostalgic pastoral image of the eternal kirkyard is however in opposition to Blackwood’s Magazine’s reputation for violent, urbane wit and sensational gothic stories. The Noctes Ambrosianae and Tales of Terror articulate a modern, masculine and elite image of the magazine which seem at odds with the domestic, pastoral Scottishness offered in the ‘Scotch novels’ and regional tales. William Blackwood’s publishing house and magazine are at once synonymous with two apparently opposing world views and target readerships, and this tension is most strongly articulated in the tidy Scots graves and unburied corpses of the magazine’s fiction. I examine works published by John Wilson, J.G. Lockhart, James Hogg, D.M. Moir, Henry Thomson, Robert McNish, John Galt, Samuel Warren, James Montgomery and Thomas de Quincey, between the magazine’s foundation in 1817 and the increasing defection of these original Blackwoodians to other periodicals and the retirement of the Noctes Ambrosianae series in the late 1830s. I identify a series of conventions associated with an idealised Blackwoodian rural death before examining the ways in which tales where the conventions of this 'good death' and burial are disrupted by crime, bodysnatching, epidemic disease and suicide challenge or reinforce the world view the rural texts articulated. Chapter one focuses on eighteenth-century ideas about death and sociability. Looking at a group of texts which span from Robert Blair’s The Grave (1746) to Edmund Burke’s revolutionary period writings of the 1790s, it traces what Ester Schor has termed a ‘transition from the “natural” sympathies of the Enlightenment to the “political” sympathies of a revolutionary age’ (75). I argue that in particular Edmund Burke’s creation of a conservative image of nation based on tradition and ancestry acted as a foundation for the type of politicised engagement with the dead which characterised the work of the Blackwood’s group. Chapter two builds upon recent identifications of a Blackwoodian regional tale tradition by highlighting the crucial role of death and the kirkyard in this provincial fiction. Placing John Wilson’s highly popular story series Lights and Shadows of Scottish Life in relation to contemporary debates about Evangelical religion, readership and nation, reveals a series of ideas and conventions which can be identified in other rural writing by John Galt, J.G. Lockhart and James Hogg. Having established an image of what a ‘good death’ might look like and stand for within the Blackwoodian imagination, I turn my attention to deaths which do not follow these conventions. Chapter three explores Blackwood’s Edinburgh Magazine’s well-documented fascination with spectacular violence in three of the magazine’s signature Tales of Terror and Thomas De Quincey’s ‘On Murder’ essays (1827, 1839). Chapter four looks at three stories from the magazine which feature bodysnatching, focusing on the role which doctors and provincial communities play within these texts. Chapter five compares responses to the 1832 cholera epidemic by James Montgomery and James Hogg. Finally, Chapter six argues for a reading of James Hogg’s Confessions of a Justified Sinner (1824) which foregrounds the role of the suicide’s body within the narrative based on the representations of suicide in contemporary discussion and in Galt’s Annals of the Parish (1821).
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Moggia, Narváez Danilo Orlando. "Patterns of Change and Their Relationship to Outcome and Follow-up in Group and Individual Psychotherapy for Depression." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/666746.
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The study explored the presence of different patterns of change in a sample of patients who received cognitive therapy for depression in group and individual sequential formats. Our hypothesis was that some patients would respond better to group than to individual therapy, and that for others the opposite trend would be found. OBJECTIVE: To identify differential patterns of response, to describe the differences in the patients’ characteristics in each pattern, and to predict pattern membership from these characteristics. Also, we wanted to gauge the relationship between each pattern and treatment outcome at termination and follow-up. METHOD: 108 adults who met criteria for major depressive disorder and/or dysthymia completed the treatments included in a randomized controlled trial combining group and individual therapy. They were assessed with the Structured Clinical Interview for DSM-IV Axis I Disorders, the Beck Depression Inventory-II, the Clinical Outcome in Routine Evaluation, the Global Assessment of Functioning, and the Repertory Grid Technique. Growth mixture modeling was used to identify the patterns of change in each treatment phase. Mixed linear models and repeated measures analysis of variance were performed to compare patients’ characteristics in each pattern. Multinomial logistic regression was used to compute predictive models for the patterns from patients’ baseline characteristics.
Finally, hierarchical linear regression was used to establish the power of each pattern to predict treatment outcome at termination and at 3-month and 1-year follow-up. Results: A 3-class solution was obtained: group therapy improvers, individual therapy improvers and non-improvers. Patients in each pattern differed in terms of initial symptom severity, psychological distress, functioning, self-ideal discrepancy, perception of social isolation, and conflictual construction of the self. Some of these variables also worked as predictors for pattern membership. More than half of the explained variance of the outcome at termination and at 1-year follow-up was accounted for by initial depression scores and pattern of change. CONCLUSIONS: The results supported the hypothesis of differential patterns of response to cognitive therapy. Profiles of patients who obtained better results in group or individual therapy for depression could be identified as well.El estudio exploró la presencia de diferentes patrones de cambio en una muestra de pacientes que recibió terapia cognitiva para la depresión en dos formatos secuenciales: grupal e individual. Nuestra hipótesis fue que algunos pacientes responderían mejor a la terapia grupal que a la individual, y que para otros pacientes se encontraría el patrón opuesto. OBJETIVO: Identificar patrones diferenciales de respuesta, describir las diferencias entre las características de los pacientes en cada patrón y, desde estas características, predecir la pertenencia de los pacientes a cada patrón. También quisimos evaluar la relación entre cada patrón y el resultado de la terapia al final del tratamiento y al seguimiento. MÉTODO: 108 adultos que cumplieron criterios para el diagnóstico de trastorno depresivo mayor y/o distimia completaron los tratamientos como parte de un ensayo clínico aleatorizado que combinaba terapia grupal e individual. Los pacientes fueron evaluados con la Entrevista Clínica Estructurada para los Trastornos del Eje I del DSM-IV, el Inventario de Depresión de Beck – II, el Clinical Outcome in Routine Evaluation, la Escala de Evaluación de la Actividad Global, y la técnica de la rejilla. Se utilizaron modelos de crecimiento mixtos para identificar los patrones de cambio en cada fase de tratamiento. Se utilizaron modelos lineales mixtos y análisis de la varianza de medias repetidas para estimar las diferencias en las características de los pacientes entre cada patrón. A través de regresión logística multinomial se estimaron modelos predictivos de los patrones de cambio desde las características iniciales de los pacientes. Finalmente, a través de regresión lineal jerárquica se estimó el poder predictivo de cada patrón para explicar los resultados de la terapia al final del tratamiento, al seguimiento a los tres meses y al seguimiento a un año. RESULTADOS: Se obtuvo una solución de tres clases: quienes mejoraron en terapia grupal, quienes mejoraron en terapia individual y quienes no mejoraron. Los pacientes pertenecientes a cada patrón se diferenciaron en el nivel inicial de sintomatología, malestar psicológico, funcionamiento, discrepancia yo-ideal, aislamiento social auto- percibido y construcción conflictiva del sí-mismo. Algunas de estas variables también funcionaron como predictores de la pertenencia de los pacientes a cada patrón. Más de la mitad de la varianza explicada del resultado de la terapia al final del tratamiento y al seguimiento a un año fue representada por las puntuaciones iniciales de depresión y los patrones de cambio. CONCLUSIONES: Los resultados tendieron a apoyar nuestra hipótesis acerca de patrones diferenciales de respuesta en terapia cognitiva. Los perfiles de los pacientes que obtuvieron mejores resultados en terapia grupal que en terapia individual para depresión pudieron ser identificados.
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Shubik, Elena. "Marketing strategy for start-up company Didogo group in CEE region with focus on new media and communications." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-71769.
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This master thesis focuses on e-commerce, online marketing and Social Media marketing potential from theoretical factual and practical perspective. On the example of real start-up e-shop Didogo Group Ltd. it aims to show various possibilities how to enhance the company's and brands' recognition while implementing various online marketing and advertising tools. Particular focus is put on Social Media as up to date platforms suitable for marketing and advertising usage. After providing general theoretical and factual overview of e-commerce in the world as well as in Czech Republic, detailed description of various internet marketing tools and Social Media, it analysis Didogo's current state and marketing tools used up to date, and further provides list of recommendations for future marketing communication strategy of this company. Master thesis contains 79 pages, 10 figures, and 7 Appendixes.
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Harrington, Carolyn D. "Critical friends group effects on teacher practice and collaboration /." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-2/harringtonc/carolynharrington.pdf.
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Arvidsson, Hans. "After the 1995 Swedish mental health care reform : a follow-up study of a group of severely mentally ill /." [Mullsjö : Göteborg : Hans Arvidsson] ; Department of Psychology, Göteborg University, 2004. http://hdl.handle.net/2077/46.
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TAVEIRA, DAYSE MARIA OLIVEIRA DOS SANTOS. "WHAT’S UP? COME JOIN US: INVESTIGATING THE DYNAMICS OF ADOLESCENT PEER GROUP FORMATION IN NARRATIVES OF INCLUSION AND EXCLUSION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=21051@1.
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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROPROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
Esta pesquisa põe seu foco principal na dinâmica de inclusão e exclusão em grupos de adolescentes no contexto escolar. Os grupos são construídos como pequenos agrupamentos de amigos cuja estrutura tem um caráter fluido e dinâmico e que se relacionam entre si, formando tramas ou redes de relacionamentos. Nessa dinâmica, o adolescente precisa se encaixar e ser aceito, o que nem sempre ocorre com êxito, pois o grupo que funciona como elemento agregador, também é aquele que pode promover a exclusão. Nesse sentido, a pesquisa busca ouvir os adolescentes sobre a dinâmica da formação desses agrupamentos, assim como sobre questões relacionadas aos processos de inclusão e exclusão. Trata-se de um estudo de cunho etnográfico que procura aliar a perspectiva sócio-histórica de construção de identidades, na qual as mesmas são construídas dentro de um contexto social, cultural e histórico, a uma abordagem microanalítica com enfoque na análise de narrativas em interação. Para a análise de narrativas, a pesquisa utiliza categorias labovianas de forma flexível, em especial a de avaliação. É observada a performance narrativa/identitária, com foco na avaliação, e tal análise se faz com base no método de análise de posicionamentos, o qual permite observar como os indivíduos se posicionam em relação às suas identidades e às identidades de seus interlocutores. A pesquisa, enfim, dimensiona a comunidade aqui estudada como microcosmo que possibilita uma perspectiva local e cria inteligibilidade sobre questões ligadas à cultura adolescente, mormente sobre os processos de inclusão e exclusão que se dão na dinâmica de formação de grupos de adolescentes na escola.
This research puts its main focus on the dynamic process of inclusion and exclusion in adolescent peer groups in the school context. Peer groups are constructed as fluid and dynamic small groupings of friends, which relate to one another, forming relationship nets. In this dynamic process, adolescents have to fit in and be accepted. This does not always occur successfully because the same group which functions as a binding element, may also promote exclusion. In this sense, the research aims at listening to adolescents not only about the dynamic formation of those groupings, but also about inclusion and exclusion processes. This ethnography-based study allies a socio-historical perspective on identity construction in which identities are constructed within a social, cultural and historical context, with a focus on the analysis of narratives in interaction. For the analysis of narratives, this research uses Labovian categories flexibly, namely, evaluation. It also observes narrative/identity performance with a focus on evaluation and that observation is based on the positioning approach to narrative analysis, which allows for the analysis of the ways individuals position themselves in relation to their identities and the identities of their interlocutors. The research frames the small community studied here as a microcosmos which gives rise to a local perspective as well as intelligibility about issues concerning youth culture, especially those concerning the processes of inclusion and exclusion that take place within the dynamics of adolescent peer group formation in school.
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Barillas, Danielle (Danielle Celeste). "Analysis of human coordination patterns between a younger and older age group during the timed up and go test." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112568.
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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.Cataloged from PDF version of thesis.
Includes bibliographical references (page 25).
An experimental study was performed to understand lower limb movement patterns between older and young adults, and to explore a new metric of coordination. Lower limb and torso movement in an older and younger population was captured using both IMU sensors and an optical tracking system. Only data from the optical method was processed and analyzed for this thesis. The participants executed several trials of a Timed-Up-and-Go test (TUGT), a 10 meter Walk Test (10MWT), and a Standing Balance Test (SBT). This paper specifically analyzed data from seven of the participants when executing the TUG test. The Relative Coordination Metric (RCM) from Hip to Knee and from Knee to Ankle was briefly explored for one subject from each age group. Several qualitative differences in motion were seen between the younger subject and the older subject for the Hip-Knee RCM, while similarities were identified for the Knee-Ankle RCM. The TUG time for the younger age group (M = 11.48s, SD = 1.26s) and the older age group (M = 12.06s, SD = 0.69s) was also compared and it was found that they were significantly different (t =1.998, p = 0.017).
by Danielle Barillas.
S.B.
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Tanaka, Yuichi. "Intragraft expression of recipient-type ABO blood group antigens : long-term follow-up and histological features after liver transplantation." Kyoto University, 2006. http://hdl.handle.net/2433/143871.
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Fu, Yiyong. "On Group-Sequential Multiple Testing Controlling Familywise Error Rate." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/336844.
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StatisticsPh.D.
The importance of multiplicity adjustment has gained wide recognition in modern scientific research. Without it, there will be too many spurious results and reproducibility becomes an issue; with it, if overtly conservative, discoveries will be made more difficult. In the current literature on repeated testing of multiple hypotheses, Bonferroni-based methods are still the main vehicle carrying the bulk of multiplicity adjustment. There is room for power improvement by suitably utilizing both hypothesis-wise and analysis- wise dependencies. This research will contribute to the development of a natural group-sequential extension of the classical stepwise multiple testing procedures, such as Dunnett’s stepdown and Hochberg’s step-up procedures. It is shown that the proposed group-sequential procedures strongly control the familywise error rate while being more powerful than the recently developed class of group-sequential Bonferroni-Holm’s procedures. Particularly in this research, a convexity property is discovered for the distribution of the maxima of pairwise null P-values with the underlying test statistics having distributions such as bivariate normal, t, Gamma, F, or Archimedean copulas. Such property renders itself for an immediate use in improving Holm’s procedure by incorporating pairwise dependencies of P-values. The improved Holm’s procedure, as all stepdown multiple testing procedures, can also be naturally extended to group-sequential setting.
Temple University--Theses
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Bustos, Cristina E. 1979. "Parent experiences of a family-centered intervention: Examining ethnocultural group differences." Thesis, University of Oregon, 2011. http://hdl.handle.net/1794/11228.
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xiii, 101 p.Ensuring that psychological interventions are well received and effective among ethnically and culturally diverse groups is at the forefront of psychological research. This study is a nonexperimental, posttest evaluation of differences between European American and ethnocultural group parents' perceptions of the Family Check-Up (FCU), a family-centered, ecologically and community-based intervention that provides family assessment, support, and motivation to change for families coming to counseling. Research has demonstrated the effectiveness of the FCU but has yet to evaluate parent perceptions of the FCU. This study examines features of intervention implementation that lead to treatment satisfaction and adherence by evaluating parent perceptions of (a) the FCU intervention, (b) therapist interpersonal qualities, and (c) therapist multicultural competence. Both parent and observational coder ratings of the intervention were assessed along these dimensions. In the first year of a longitudinal study of the FCU, data were collected from parents of children who attended three public middle schools in a metropolitan area of the Pacific Northwest. Within-subjects analyses were conducted to assure measurement validation and treatment fidelity. A between-subjects multivariate analysis of variance was utilized to examine ethnocultural group differences. Results revealed that all measures demonstrated high internal consistency reliability, high interscale correlations, and good construct validity. Results revealed high interrater agreement between parent ratings of treatment receipt and coder ratings of treatment delivery, indicating treatment fidelity. Results revealed no statistically significant differences in parent perceptions of the FCU intervention, regardless of parent ethnocultural group. Additional analyses demonstrated that observational coders rated family consultants who worked with ethnocultural group parents higher in multicultural competence than those who worked with European American parents. In summary, study results suggest (a) that the measures developed and adapted for this investigation were reliable and valid, and (b) that we found no evidence of perceived differences in the FCU intervention across ethnocultural group and European American parents. The FCU continues to be an intervention that can be successfully implemented among ethnically and culturally diverse families.
Committee in charge: Dr. Benedict McWhirter, Chair; Dr. Elizabeth Stormshak, Member; Dr. Joseph Stevens, Member; Dr. Thomas Dishion, Outside Member
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Wang, Rongzhang. "To build up a pure land in the world : a study of the formation of the Tz'u Chi Buddhist group in Taiwan." Thesis, Lancaster University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403925.
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Nelson, Richard W. "A follow-up study of the reasons involved in teacher turnover using a sample group of marketing education graduates from 1995-1999." Online version, 2001. http://www.uwstout.edu/lib/thesis/2001/2001nelsonr.pdf.
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Merrill, Theresa R. "Rise up singing, a model for consciousness through the therapist's reflections on an improvisational music therapy group for persons with end stage dementia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0015/MQ57913.pdf.
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Hornblower, Kathryn. "Don't stand by, stand up : a peer group anti-bullying intervention to increase pro-defending attitudes and behaviour in students that witness bullying." Thesis, University of Exeter, 2014. http://hdl.handle.net/10871/15576.
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Psychological research into bullying has highlighted the importance of considering the role of bystanders within this complex social interaction (see literature review). The aim of this paper was to apply this research to develop an anti-bullying intervention programme that increases pro-defending attitudes and behaviour, and consequently reduces bullying. The methodology was a design experiment; in this first iteration, the intervention programme was designed, implemented, and evaluated in collaboration with staff and students at a secondary school. Data were collected using a mixed methods approach via questionnaires, focus groups, an interview, and observation. The results showed that there was no significant difference in prevalence estimates of defending or bullying pre and post intervention. However, two thirds of participants reported that their attitudes and behaviour had become more supportive of defending victims since the intervention. Qualitative data revealed a diversity of perspectives regarding the effects and value of the programme. A model outlining factors that influence decisions to defend a victim of bullying was developed from the results and previous literature. The findings from this paper were used to inform modifications to the design of the intervention programme for implementation in the second iteration in paper 2.
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Ho, Tai-wai David. "A study on the corporate strategy of the Bank of China Group in Hong Kong in the run-up to the twenty-first century /." [Hong Kong : University of Hong Kong], 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13731051.
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何大偉 and Tai-wai David Ho. "A study on the corporate strategy of the Bank of China Group in Hong Kong in the run-up to the twenty-first century." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1993. http://hub.hku.hk/bib/B31265662.
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Mohamoud, Aweys O. "Growing up Somali in Britain : the experience of a group of young Somali men and women coming of age in London and their parents." Thesis, University College London (University of London), 2011. http://discovery.ucl.ac.uk/10020621/.
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This study tells the story of Britain's single largest group of refugee children - the children of Somali refugees - as they have experienced growing up amidst marginal working class communities and inner-city neighbourhoods. It focuses on the major themes in the lives of these children and their families and the challenges confronting them in terms of adjustment to a new society, family and school life, education, employment, identity, goals, and aspirations (see Rumbaut & Portes 2001:12). In addition to data gathered through qualitative interviewing in London in two different time periods over a decade apart, the study pulls together existing research that bears directly or indirectly on children's immigrant experiences and adaptational outcomes in both the US and the UK. On the whole, it is suggested that the environments created by a combination of immigrant's human and social capital and the context that receives them dominate the process of adaptation and its prospects for success. There is much evidence in this research to support the assertion that 'family resources, family strategies, and parental expectations' are significant factors in the success of immigrant young people. Where that was weak or nonexistent, some of the young people concerned could not escape from the external challenges that confronted them in schools and neighbourhoods. A few of them fell prey to a social context that promoted a set of undesirable outcomes such as dropping out of school, joining youth gangs, and using and selling drugs. As Alejandro Portes and Ruben Rumbaut (2001) found out elsewhere, a tentative explanation from this research is that there is a patterned sequence of adaptation conditioned by predictable social forces: refugee human and social capital, first, and opportunities and barriers in the host society, second. These sets of factors play themselves out over time conditioning the adaptation of first generation immigrants, and the academic performance and career horizons of their offspring (ibid.). The background of war, flight and exile also continue to influence the lives of these children and their families.
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Webb, Robert W. "Accomplishing an effective transition into the role of pastor of Memorial Baptist Church of Columbia, Missouri through the utilization of a pastor's start-up support group." Theological Research Exchange Network (TREN), 1995. http://www.tren.com.
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Obaid, Mehnaz, and Zina Hussein. "Quality of life, jaw function and aesthetics in patients treated with orthognathic surgery in comparison with a control group - A controlled and long-term follow-up study." Thesis, Malmö högskola, Odontologiska fakulteten (OD), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-19780.
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Objective: To study the quality of life, jaw function and aesthetics in patients, at least 10 years after they have completed orthognathic treatment, in comparison with a control group. Material and Methods: The sample was retrieved from a previous study by Abrahamsson et al. The treatment group consisted of 94 consecutive patients (59 women and 35 men) with dentofacial deformities who were referred to Department of Oral Maxillofacial Surgery, Malmö University Hospital, Sweden for orthognathic surgery. The average age of the treatment group was 22.4 ±7.6 years. The control group consisted of 53 individuals (30 women and 23 men, with mean age 23.4 ± 7.3) and was recruited from the Department of Oral Diagnostics in Dentistry University in Malmö and at the Public Dental Service in Oxie. A questionnaire including Oral health impact profile (OHIP-14), Jaw functional limitation scale (JFLS-8) and Orofacial aesthetic scale (OAS-8) supplemented with two questions directed to the treatment group was sent out to both the treatment and the control group. Result: The response rate was 57% (n=54) in the treatment group and 53% (n=28) in the control group. According to the result from OHIP-14 the quality of life was better in the treatment group in comparison with the control group. However, jaw function and orofacial aesthetics were comparable between the groups according to the results from JFLS-8 and OAS-8. The majority of the patients in this study were very satisfied with the result of orthognathic surgery at 10 years follow-up.Conclusion: Orthognathic treatment has been shown to be a successful treatment not only in term of jaw function and aesthetic but also in enhanced quality of life.
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Havelková, Iveta. "Princip partnerství na příkladu společných projektů místních akčních skupin Pardubického kraje." Master's thesis, Vysoká škola ekonomická v Praze, 2017. http://www.nusl.cz/ntk/nusl-359478.
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The diploma thesis The partnership on examples of joint projects of the local action groups of the Pardubice region approaches one of the forms of cooperation in which decentralization of the decision-making power is at the level of local actors. The theoretical part focuses on rural areas, local rural development actors, the LEADER method, including Community-Led Local Development, partnerships and local action groups. Rural development groups are made up of representatives of public administration, local entrepreneurs, non-profit organizations and the public. Support is provided by the LEADER method, which works on the bottom-up principle. This method contributes to better targeting of support to rural areas to the well-defined local needs of the population. The practical part focuses on local action groups from the region with a focus on the period of 2007-2013 and the implementation of cooperation projects. The aim of the diploma thesis is to identify the attitudes of local development actors towards cooperation projects, to clarify the relations between groups of local events in the Pardubice Region, to evaluate their elementary cooperation and to identify the bottom-up application rate.
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Borges, Cenita Pereira. "Estudo longitudinal de pacientes com transtorno obsessivo compulsivo após cinco anos de tratamento com sertralina ou terapia cognitivo-comportamental em grupo." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/25110.
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Objetivo: Avaliar a resposta ao tratamento em longo prazo de pacientes com transtorno obsessivo-compulsivo (TOC) após cinco anos de terapia cognitivocomportamental em grupo (TCCG) ou sertralina 100mg/dia. Método: Em um estudo naturalístico foram acompanhados após cinco anos cinquenta pacientes que completaram 12 sessões semanais de duas horas de TCCG ou utilizaram 100mg de sertralina/dia pelo mesmo período. A intensidade dos sintomas foi avaliada cinco anos após o tratamento pela Yale-Brown Obsessive- Compulsive Scale (Y-BOCS), Impressão Clínica Global (CGI), Beck Anxiety Inventory (BAI), Beck Depression Inventory (BDI) e a qualidade de vida através do World Health Organization Quality of Life Assesment – Abreviated Version (WHOQOL-bref). Resultados: Tanto os pacientes tratados com TCCG como os tratados com sertralina apresentaram redução significativa na gravidade dos sintomas e manutenção dos ganhos terapêuticos cinco anos após o término do tratamento. Observamos também no período de seguimento um aumento no uso de medicação no grupo TCCG (p<0.001) e busca por atendimento psicoterápico no grupo que usou sertralina (p=0,084) embora este último em nível não significativo. Os resultados indicaram que 61,9% dos pacientes seguiram usando ou iniciaram o uso de medicamentos, e 41,5% iniciaram ou continuaram a TCC. Houve um aumento significativo de pacientes em remissão no grupo da sertralina (p=0,046), não ocorrendo o mesmo no grupo da TCCG (p=0,083). Houve aumento nos escores dos diferentes domínios da qualidade de vida independente do grupo. Conclusões: Nossos resultados demonstram que tanto o grupo que realizou TCCG como o que usou sertralina mantiveram a melhora alcançada logo após o término do tratamento, cinco anos após. Além disto, observou-se uma melhora em todos os domínios da QV. Talvez isso se deva ao fato de que mais da metade dos pacientes terem continuado em tratamento durante o seguimento.Objective: Assess obsessive-compulsive disorder (OCD) patients' long term response to treatment after five years of cognitive-behavioral group therapy (CBGT) or sertraline 100mg/day. Methods: Fifty patients who completed 12 two-hour weekly CBGT sessions or had sertraline 100 mg/day for the same period were followed up in a naturalistic study. The severity of symptoms were evaluated after five years from the conclusion of treatment by Yale-Brown Obsessive-Compulsive Scale (Y-BOCS), Clinical Global Impressions Scale - Severity underscore (CGI-S), Beck Anxiety Inventory (BAI), Beck Depression Inventory (BDI), and quality of life with World Health Organization Quality of Life Assesment – Abreviated Version (WHOQOL-bref). Results: Both patients treated with CBGT and those treated with sertraline showed a significant reduction in the severity of symptoms and maintained therapeutic gains five years after the end of treatment. We also noticed an increase in the use of medication in the CBGT group (p<0.001) during the follow-up period and a search for psychotherapeutic treatment in the group who took sertraline (p=0.084), although this latter occurred at a non-significant level. Results indicated that 61.9% of patients continued using or started using the medication and 41.5% started or continued with the CBT. There was a significant increase of remissive patients in the sertraline group (p=0.046), while the same did not occur in the CBGT group (p=0.083). There was an increase in the scores of different quality of life domains (QL) regardless of the group. Conclusions: Our results showed that both the group that underwent CBGT and the one that took sertraline maintained their levels of improvement at the end of the five-year treatment. As well, an increase in all QL domains was noticed. Perhaps this may be put down to the fact that over half the patients continued with the treatment during the follow-up period.
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Wendav, Torsten. "Modeling of SiGeSn-based semiconductor heterostructures for optoelectronic applications." Doctoral thesis, Humboldt-Universität zu Berlin, 2017. http://dx.doi.org/10.18452/18139.
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In den letzten Jahren gibt es großes Interesse am SiGeSn Materialsystem aufgrund seines Potentials für die Verwendung in der Optoelektronik, Elektronik und Photovoltaik. Während jedoch die binären Verbindungshalbleiter Si(x)Ge(1-x) und Ge(1-y)Sn(y) schon intensiv untersucht wurden, sind die Materialeigenschaften des ternären Verbindungshalbleiters Ge(1-x-y)Si(x)Sn(y) und Nanostrukturen basierend auf diesem Verbindungshalbleiter noch weitgehend unbekannt. In dieser Arbeit werden drei theoretische/theoretisch-experimentelle Studien zur Untersuchung des SiGeSn Materialsystems vorgestellt.
In einer Studie wird die Abhängigkeit der Größe der direkten Bandlücke von der Zusammensetzung des Ge(1-x-y)Si(x)Sn(y) Verbindungshalbleiters untersucht. Basierend auf Messungen der Rutherford Rückstreuung, Röntgenbeugung und Photolumineszenz (PL) von Ge(1-x-y)Si(x)Sn(y) Proben mit an Ge angepassten Gitterkonstanten wird die Abhängigkeit von Größe der direkten Bandlücke und der Materialkomposition mit einer quadratischen Gleichung beschrieben.
Weiterhin wird die Bandanordnung der elementaren Halbleiter Si, Ge und Sn an Grenzflächen untersucht. Anhand von Kohn-Sham basierter Density Functional Theory (DFT) in Kombination mit Local Density Approximation (LDA) berechneten Bandstrukturen von Grenzflächen zwischen Elementarhalbleitern wird der Versatz im Valenzband zwischen Si, Ge und Sn untersucht. Es wird gezeigt, dass aufgrund zu kleiner Bandlücken resultierend aus dem Kohn-Sham-Ansatz in Verbindung mit der LDA ein unphysikalischer „Broken Gap“ Versatz zwischen Ge und Sn Bändern entsteht.
In einer dritten Studie werden die PL-Spektren von Ge Quantentöpfen mit Si Barrieren untersucht. Um die Abhängigkeit der PL-Spektren von Anregungsintensität und Temperatur zu verstehen, wird ein selbstkonsistentes Effektives-Massen-Model entwickelt. Mit diesem Model ist es möglich den Einfluss von Temperatur und Bandauffüllung auf das PL-Spektrum zu untersuchen.The SiGeSn semiconductor material system has recently attracted great interest due to its prospective potential for use in optoelectronics, electronics, and photovoltaics. While the binary alloy Si(x)Ge(1-x) and Ge(1-y)Sn(y) have already been well studied, the properties of bulk and heterostructures involving the Ge(1-x-y)Si(x)Sn(y) ternary alloy are largely unknown. In this thesis, we present the results of three theoretical/experimental-theoretical investigations concerning the SiGeSn material system. First, we investigate the compositional dependence of the direct band-gap of Ge(1-x-y)Si(x)Sn(y) alloys. Based on Rutherford backscattering, x-ray diffraction, and photoluminescence (PL) measurement of Ge(1-x-y)Si(x)Sn(y) alloys lattice-matched to Ge, we describe the compositional dependence of the band gap using a quadratic equation. We predict Ge(1-x-y)Si(x)Sn(y) alloys lattice-matched to Ge to be direct-band-gap semiconductors for Sn concentrations larger than 12%. Secondly, we investigate the band alignment between the elemental semiconductors Si, Ge, and Sn. Performing bulk and interface calculations using density functional theory (DFT) in combination with the local density approximation (LDA), we attempt to calculate the valence band offset between the elemental semiconductors. We find that the Kohn-Sham based DFT-LDA calculations are flawed by the underestimation of the band-gaps of the elemental semiconductors, which leads to a false broken gap band alignment between Ge and Sn. Third, we study the PL of ultrathin Ge multiple quantum well (multiple-QW) structures grown on Si. To understand the excitation density and temperature related shifts of the PL spectra of the sample, we develop a self-consistent multivalley effective mass model. Using second-order perturbation theory, we calculate the indirect phonon-assisted radiative spontaneous recombination rate together with the no-phonon peak energy and compare our results to the experimental results.
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Waltereit, Patrick. "(Al, Ga, In)N heterostructures grown along polar and non-polar directions by plasma-assisted molecular beam epitaxy." Doctoral thesis, [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963284975.
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Kleinfehn, Alex Patrick. "Scale-Up of Modifiable Poly(propylene fumarate) and Surface Functionalization of Additive Manufactured Scaffolds for Bone Tissue Regeneration." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1562679460809562.
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De, Beer Annemarie. "Interpersonal and inter-group trust levels of a group of students at a tertiary institution." Diss., Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-01092009-154838/.
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Barré, Geneviève. "Le rôle des capacités dynamiques dans le processus d’internationalisation des entreprises chinoises : le cas de Haier, Huawei et TCL." Thesis, Paris, CNAM, 2014. http://www.theses.fr/2015CNAM0952.
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Cette thèse porte sur le rôle des capacités dynamiques dans le processus d’internationalisation des entreprises chinoises depuis l’entrée de la Chine dans l’Organisation mondiale du commerce en 2001 alors que ces entreprises ne disposaient pas d’avantages concurrentiels préalables clairs par rapport à leurs concurrents occidentaux. L’étude de trois multinationales chinoises – Haier Group, Huawei Technologies et TCL Corporation – est menée dans le cadre théorique des capacités dynamiques (Dynamic Capability View - DCV). Elle vise à identifier la nature et les fondations des capacités dynamiques développées par ces entreprises au cours de leur processus d’internationalisation. Ce processus est caractérisé par la combinaison d'un investissement très significatif en innovation technologique et d’une internationalisation accélérée contribuant conjointement à la création d’un avantage concurrentiel durable. Ces deux dimensions de la stratégie des entreprises bénéficient d'un fort soutien du gouvernement chinoisThis thesis focuses on the role of dynamic capabilities in the internationalization process of Chinese corporations since China’s entry into the World Trade Organization in 2001, even though these companies did not have a clear prior competitive advantage over their Western competitors. The study of three Chinese multinational enterprises – the Haier Group, Huawei Technologies and TCL Corporation – is conducted in the framework of the Dynamic-Capability View (DCV). It aims at identifying the nature and the foundations of the dynamic capabilities developed by these corporations during the internationalization process.This process is characterized by the combination of a significant investment in technological innovation and an accelerated internationalization, jointly contributing to creating and sustaining of competitive advantage. These two elements of the corporate strategies benefit from the strong support of the Chinese government
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Valicenti, Elizabeth Anne. "The Tangled Web: How Nonprofit Board Members Experience Organizational Crisis." Antioch University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=antioch1337818367.
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Olofsson, Viveca. "Child prevention and group based parenting programs : effectiveness and implementation." Doctoral thesis, Örebro universitet, Institutionen för juridik, psykologi och socialt arbete, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-46973.
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Approximately 10–25% of children and youth suffer from mental health problems, such as depression, emotional difficulties, and disruptive behaviors. The evidence base of the effectiveness of preventive interventions targeting youth mental health currently delivered in regular care is weak. Also, little is known about what is needed for continued delivery of preventive programs in regular care. Hence, there is an evident need of effectiveness evaluations of preventive interventions and their implementation in regular care. In childhood, parenting is an important risk or protective factor for child development, and many programs to improve parents’ parenting has been developed used as preventive interventions. Using an ecological approach to prevention and the prevention research cycle as the theoretical framework this dissertation aim to investigate: 1) the long-term effectiveness of four parenting programs (Cope, Comet, Connect, and the Incredible Years); 2) whether the programs work better for some compared to others; 3) if it matters where parents attend the programs; 4) the field of implementation research regarding group based parenting programs ; and 5) implementation challenges specifically related to such parenting programs. Overall, the long-term results reveal that there are no significant difference in effectiveness across the programs over time. Also, the programs does not seem work better for some compared to others, and neither does it seem as if program effectiveness is much influenced by the sectors delivering the programs (child and adolescent psychiatry, social care, or school). Concerning the implementation of preventive interventions the research base is small, and conclusive evidence concerning implementation aspects of group based parenting programs are non-existing. Thus, it was not possible to draw firm conclusions about their implementation. Nonetheless, existing research clearly suggest that program specific challenges can influence the implementation of group based parenting programs. Implications for practice and research are discussed, for instance, adaptations to the prevention research cycle.
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Fischer, Tobias. "Development of dual mode labels for the quantitative analysis of surface functional groups with XPS and fluorescence." Doctoral thesis, Humboldt-Universität zu Berlin, 2017. http://dx.doi.org/10.18452/17764.
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In dieser Arbeit sollte eine Derivatisierungsmethode entwickelt werden, die die duale Quantifizierung funktioneller Gruppen an Oberflächen mittels Röntgenphotoelektronenspektroskopie (XPS) und Fluoreszenz ermöglicht. Verschiedene Farbstoffe, die robuste Fluoreszenzeigenschaften mit hohen Fluorgehalten für XPS kombinieren, wurden auf ihre selektive Reaktion mit Aminogruppen getestet und der Prototyp einer tiefergehenden Analyse auf einer Oberfläche unterzogen. Durch Fluoreszenzlöschung konnten die Möglichkeiten der bimodalen Analyse nur begrenzt abgeschätzt werden, obwohl in XPS und Fluoreszenz intensive Signale gemessen wurden. Die Herstellung der Modelloberflächen mittels Gasphasenabscheidung von Silanen konnte durch Kontaktwinkelmessungen schrittweise optimiert werden. Die Kombination zweier Monoalkoxysilane ermöglichte die Herstellung von Oberflächen mit variabler Funktionalgruppendichte. Nach Reaktion mit dem dualen Marker ließen sich die Messungen aus XPS und Fluoreszenz mindestens über eine Größenordnung korrelieren. Durch Synchrotron-XPS (SR-XPS) und Röntgenfluoreszenz unter Totalreflektion (TXRF) konnte eine absolute und rückführbare Quantifizierung erzielt werden. Weitere Modelloberflächen auf Basis von Trialkoxysilanen zeigten, dass bei anwendungsnahen Proben Fluoreszenzlöschung auftritt. Diese konnte in einem gewissen Maße mittels Fluoreszenzlebensdauer berechnet werden. Darüberhinaus konnte mit der Photometrie eine unabhängige Methode gefunden werden, die die Quantifizierung des Farbstoffs an der Oberfläche in hoher Präzision ermöglicht und mit Hilfe der XPS auch der funtionellen Gruppen. Die Cavity Ring-Down Spektroskopie (CRDS) wurde als Laserbasierte Methode zur empfindlichen und ortsaufgelösten Messung der Absorption auf transparenten Substraten untersucht und erste vielversprechende Ergebnisse gewonnen. Weiterhin wurde ein modulares Farbstoffsystem entwickelt, das sowohl Variation der spektralen als auch der Bindungseigenschaften erlaubt.This work aimed on the development of dual-mode labelling method that combines X-ray photoelectron spectroscopy (XPS) with fluorescence measurements for surface functional group quantification. Label dyes combining robust fluorescence properties with high fluorine contents were investigated towards their selective reaction with surface amino groups and the lead candidate subjected to detailed analysis on a surface. Fluorescence quenching precluded a detailed investigation of the capabilities of dual-mode labelling, despite providing sufficient signal in XPS and fluorescence scanning. The fabrication of surfaces using vapour deposition (VD) of silanes in toluene was optimized under aid of contact angle measurements. Binary mixtures of mono-alkoxy silanes were used to prepare surfaces with variable functional group density. Treatment with the label dye showed that XPS and fluorescence provide a linear overlap in signal generation over at least one order of magnitude. The combination of synchrotron radiation XPS (SR-XPS) and total reflection X-ray fluorescence spectroscopy (TXRF) provided an absolute and traceable quantification . Different model surfaces based on trialkoxy silanes showed strong fluorescence quenching. A fluorescence lifetime based correction was developed to account for such quenching effects. Additionally, the application of spectrophotometry provided a independent method of quantification for the surface bound dye and in combination with information obtained from XPS, to determine the surface functional group density. With cavity ring-down spectroscopy (CRDS), a laser based technique for highly sensitive and spatially resolved absorption measurements on transparent substrates could be developed and applied in a proof-of-concept. A modular system for the fabrication of label dyes with adjustable spectral properties and different binding sites was investigated using prototype candidates to prove the general applicability of such systems.
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Lähnemann, Jonas. "Luminescence of group-III-V nanowires containing heterostructures." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2013. http://dx.doi.org/10.18452/16797.
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In dieser Dissertation wird die spektrale und örtliche Verteilung der Lumineszenz von Heterostrukturen in selbstorganisierten Nanodrähten (ND) mit Hilfe von Kathodolumineszenz-Spektroskopie (KL) im Rasterelektronenmikroskop untersucht. Diese Methode wird ergänzt durch Messungen der kontinuierlichen und zeitaufgelösten Mikro-Photolumineszenz. Drei verschiedene Strukturen werden behandelt: (i) GaAs-ND bestehend aus Segmenten der Wurtzit (WZ) bzw. Zinkblende (ZB) Kristallstrukturen, (ii) auf GaN-ND überwachsene GaN-Mikrokristalle und (iii) (In,Ga)N Einschlüsse in GaN-ND. Die gemischte Kristallstruktur der GaAs-ND führt zu komplexen Emissionsspektren. Dabei wird entweder ausschließlich Lumineszenz bei Energien unterhalb der ZB Bandlücke, oder aber zusätzlich bei höheren Energien, gemessen. Diese Differenz wird durch unterschiedliche Dicken der ZB und WZ Segmente erklärt. Messungen bei Raumtemperatur zeigen, dass die Bandlücke von WZ-GaAs mindestens 55 meV größer als die von ZB-GaAs ist. Die Lumineszenz-Spektren der GaN-Mikrokristalle enthalten verschiedene Emissionslinien, die auf Stapelfehler (SF) zurückzuführen sind. SF sind ZB Quantentöpfe verschiedener Dicke in einem WZ-Kristall und es wird gezeigt, dass ihre Emissionsenergie durch die spontane Polarisation bestimmt wird. Aus einer detaillierten statistischen Analyse der Emissionsenergien der verschiedenen SF-Typen werden Emissionsenergien von 3.42, 3.35 und 3.29 eV für die intrinsischen (I1 und I2) sowie für extrinsische SF ermittelt. Aus den entsprechenden Energiedifferenzen wird -0.022C/m² als experimenteller Wert für die spontane Polarisation von GaN bestimmt. Die Bedeutung sowohl der piezoelektrischen Polarisation als auch die der Lokalisierung von Ladungsträgern wird für (In,Ga)N-Einschlüsse in GaN-ND gezeigt. Hierbei spielt nicht nur die Lokalisierung von Exzitonen, sondern auch die individueller Elektronen und Löcher an unterschiedlichen Potentialminima eine Rolle.In this thesis, the spectral and spatial luminescence distribution of heterostructures in self-induced nanowires (NWs) is investigated by cathodoluminescence spectroscopy in a scanning electron microscope. This method is complemented by data from both continuous and time-resolved micro-photoluminescence measurements. Three different structures are considered: (i) GaAs NWs containing segments of the wurtzite (WZ) and zincblende (ZB) polytypes, (ii) GaN microcrystals overgrown on GaN NWs, and (iii) (In,Ga)N insertions embedded in GaN NWs. The polytypism of GaAs NWs results in complex emission spectra. The observation of luminescence either exclusively at energies below the ZB band gap or also at higher energies is explained by differences in the distribution of ZB and WZ segment thicknesses. Measurements at room temperature suggest that the band gap of WZ GaAs is at least 55 meV larger than that of the ZB phase. The luminescence spectra of the GaN microcrystals contain distinct emission lines associated with stacking faults (SFs). SFs essentially constitute ZB quantum wells of varying thickness in a WZ matrix and it is shown that their emission energy is dominated by the spontaneous polarization. Through a detailed statistical analysis of the emission energies of the different SF types, emission energies of 3.42, 3.35 and 3.29 eV are determined for the intrinsic (I1 and I2) as well as the extrinsic SFs, respectively. From the corresponding energy differences, an experimental value of -0.022C/m² is derived for the spontaneous polarization of GaN. The importance of both carrier localization and the quantum confined Stark effect induced by the piezoelectric polarization is shown for the luminescence of (In,Ga)N insertions in GaN NWs. Not only localized excitons, but also electrons and holes individually localized at different potential minima contribute to the observed emission.
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Knelangen, Matthias. "Nucleation and growth of group III-nitride nanowires." Doctoral thesis, Humboldt-Universität zu Berlin, 2013. http://dx.doi.org/10.18452/16855.
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Diese Arbeit beschreibt das MBE-Wachstum und die Charakterisierung von Gruppe-III-Nitrid-Nanostrukturen. Die Arbeit beginnt mit dem katalysatorfreien Wachstum von GaN-Nanowires (NW) auf Si(111) mittels MBE. Es wird gezeigt, dass GaN NW als sph\"arische Inseln nukleieren und im weiteren Wachstum in eine NW-Geometrie übergehen. Die amorphe Zwischenschicht führt zum Verlust der epitaktischen Ausrichtung und somit zu gekippten Säulen und Koaleszenz. Diese Koaleszenz führt zur Enstehung von Versetzungen und Stapelfehlern in den Nanosäulen, welche einen starken Einfluss auf die optischen Eigenschaften haben: Während Versetzungen die Säulen optisch passivieren, haben Stapelfehler charakteristische Emissionen. Durch Kombination von Elektronenmikroskopie und Cathodolumineszenz wird die charateristische Wellenlänge eines Stapelfehlers gemessen. Epitaktisches Wachstum von GaN auf Si(111) kann durch die Verwendung einer AlN-Pufferschicht erreicht werden. Die Nukleation von GaN auf AlN/Si geschieht als linsenförmige Inseln. Im weiteren Verlauf des Wachstums erfolgen mehrere charakteristische Formübergänge, bei denen Facetten gebildet werden, um die Verspannung durch Gitterfehlanpassung elastisch zu relaxieren. Bei einer kritischen Inselgröße (und damit bei einem kritischen Spannungszustand) tritt eine platische Relaxation ein und es wird eine Versetzung an der AlN/GaN-Grenzfläche gebildet. Daraufhin tritt ein Übergang zur NW-Geometrie ein. Der dritte Teil dieser Arbeit beschreibt das Wachstum von (In,Ga)N/GaN NW Heterostrukturen. Mit MBE werden GaN NW mit zwei (In,Ga)N-Einschlüssen gewachsen. Die chemische Zusammensetzung wird mittels einer Kombination von hochauflösender Röntgenbeugung und einer Gitterverzerrungsanalyse von hochaufgelösten transmissionselektronenmikroskopischen Aufnahmen bestimmt. Die Strukturanalyse zeigt, dass die (In,Ga)N-Einschlüsse vollkommen in die GaN-Matrix eingebettet sind, und dass keine plastische Relaxation stattfindet.This work covers the MBE growth and characterization of group III-nitride nanostructures. The work begins with the catalyst-free growth of GaN nanowires (NWs) on Si(111) by plasma-assisted MBE. The importance of substrate preparation and the formation of an amorphous SiN interlayer are described. GaN NWs are shown to nucleate as spherical islands and to furhter undergo a shape transition towards the NW geometry. The amorphous interlayer leads to a loss in epitaxial alignment and thus to NW tilt and coalescence. Coalescence leads to the formation of dislocations and stacking faults (SFs) in the NWs which greatly affect their optical properties. Dislocations are shown to have a detrimental effect on the optical quality, whereas SFs are shown to have a characteristic emission wavelength. Epitaxial growth of GaN on Si(111) can be achieved by using an AlN buffer layer. The nucleation and growth GaN NWs on AlN-buffered Si(111) is shown to happen via the pseudomorphical nucleation of spherical islands. As these islands grow, they undergo several characteristical shape changes, with the formation of facets in order to elastically relieve the lattice-mismatch induced strain. At a critical island size (and thus strain level), plastic relaxation happens by the formation of a misfit dislocation at the AlN/GaN interface. A subsequent transition to the NW geometry is observed, driven by the anisotropy of surface energies. The third part of this work covers the growth of (In,Ga)N/GaN NW heterostructures. GaN NWs with two stacked (In,Ga)N insertions are grown by MBE. The chemical composition is assessed by combining synchrotron-based HRXRD and a geometrical phase analysis of HRTEM micrographs. The structural analysis reveals that the (In,Ga)N insertions are embedded in the GaN matrix and that no plastic relaxation happens. The In content is shown to vary within a single insertion: The top region is more In rich due to In segretation during growth.
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Petrone, Robert Anthony. "Shreddin' it up re-thinking "youth" through the logics of learning and literacy in a skateboarding community /." Diss., Connect to online resource - MSU authorized users, 2008.
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Yoon, Bong Sup. "A study of effective strategies for bringing up new believers in faith from the early stage of faith to discipleship." Online full text .pdf document, available to Fuller patrons only, 2004. http://www.tren.com.
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McCoy-Hall, Tessa. "Up on the Mountain, Down in the Valley: An Examination of the Impacts of Maternal Incarceration." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etd/3385.
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This research examines the effects of maternal incarceration in the United States with a specific focus on the short- and long-term risks to which children are exposed when they live with their mothers pre-incarceration. It synthesizes the pre-existing body of research concerning the effects of maternal incarceration and places it in dialogue with the author’s unfolding personal narrative—a story of resilience. Employing an autoethnographic approach and analyses of the letters her mother wrote to her while in a state penitentiary, the author examines her own life relative to the relational communication patterns between her and her mother before, during, and after her mother’s incarceration.
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Burji, Carla. "Evaluating feedback during the Step It Up! game to increase physical activity exhibited by elementary school students during recess." Scholarly Commons, 2019. https://scholarlycommons.pacific.edu/uop_etds/3629.
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Children who are physically inactive are more likely to suffer numerous health complications such as obesity, cardiovascular disease, and diabetes. The Good Behavior Game (GBG) has been identified as an effective method for decreasing inappropriate behaviors and increasing appropriate behaviors in a variety of settings; however, few studies have used the GBG to increase physical activity. Furthermore, no previous research has evaluated the effects of feedback while playing the GBG to increase physical activity. Some research suggests certain characteristics of feedback tend to produce consistent changes in behaviors such as providing feedback immediately and privately. The purpose of the current study was to extend previous research and evaluate whether the addition of feedback to the Step it UP! Game, a modified version of the GBG has an impact on children’s step counts. A reversal (ABCAB) design was used to examine the number of steps students took during baseline (A), the Step it UP! Game (B), and the Step it UP! Game with feedback (C). Sealed pedometers were distributed to 21 students from a fifth-grade general education classroom. The results of this study suggest that the Step it UP! Game with feedback did not enhance the number of steps taken during recess. Additionally, the Step it UP! Game (with and without feedback) did result in a slight increase in mean steps per min during recess initially but, these steps did not maintain overtime.
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Vogt, Patrick. "Growth Kinetics, Thermodynamics, and Phase Formation of group-III and IV oxides during Molecular Beam Epitaxy." Doctoral thesis, Humboldt-Universität zu Berlin, 2017. http://dx.doi.org/10.18452/18036.
Full textAbstract:
Die vorliegende Arbeit präsentiert eine erste umfassende Wachstumsstudie, und erste quantitative Wachstumsmodelle, von Gruppe-III und IV Oxiden synthetisiert mit sauerstoffplasmaunterstützter Molekularstrahlepitaxie (MBE). Diese entwickelten Modelle beinhalten kinetische und thermodynamische Effekte. Die erworbenen Erkenntnisse sind auf fundamentale Wachstumsprozesse in anderen Syntheseverfahren übertragbar, wie zum Beispiel der Laserdeposition oder metallorganische Gasphasenepitaxie.
Die Wachstumsraten und Desorptionsraten werden in-situ mit Laser-Reflektometrie
bzw. Quadrupol-Massenspektrometrie (QMS) bestimmt. Es werden die transparenten halbleitenden Oxide Ga2O3, In2O3 und SnO2 untersucht. Es ist bekannt, dass sich das
Wachstum von Gruppe-III und IV Oxiden, aufgrund der Existenz von Suboxiden, fundamental
von anderen halbleitenden Materialien unterscheidet. Es stellt sich heraus, dass
die Wachstumsrate der untersuchten binären Oxide durch die Formierung und Desorption
von Suboxiden flussstöchiometrisch und thermisch limitiert ist. Es werden die Suboxide
Ga2O für Ga2O3, In2O für In2O3 und SnO für SnO2 identifiziert. Ein Suboxid ist
ein untergeordneter Oxidationszustand, und es wird gezeigt, dass die untersuchten Oxide
über einen Zwei-Stufen-Prozess gebildet werden: vom Metall zum Suboxid, und weiterer
Oxidation vom Suboxid zum thermodynamisch stabilen festen Metalloxid. Dieser
Zwei-Stufen-Prozess ist die Basis für die Entwicklung eines ersten quantitativen, semiempirschen MBE-Wachstumsmodells für binare Oxide die Suboxide besitzen. Dieses
Model beschreibt und erklärt die gemessenen Wachstumsraten und Desorptionsraten. Es
wird die Kinetik und Thermodynamik des ternären Oxidsystems (InxGa1−x)2O3 untersucht.
Die gemittelten Einbauraten von In und Ga in ein makroskopisches Volumen
von (InxGa1−x)2O3 Dünnschichten werden ex-situ mit energiedispersiver Röntgenspektroskopie gemessen. Diese Einbauraten werden systematisch analysiert und im Rahmen kinetischer und thermodynamischer Grenzen beschrieben. Es wird gezeigt, dass Ga den In-Einbau in (InxGa1−x)2O3 aufgrund seiner stabileren Ga–O Bindungen thermodynamisch verhindert. In diesen Zusammenhang wird ein neuer katalytisch-tensidischer Effekt des In auf den Einbau von Ga gefunden. Eine Folge dieses katalytisch-tensidischen Effektes ist die Formierung der thermodynamisch, metastabilen hexagonalen Ga2O3 phase mit sehr hoher Kristallqualität. Ein thermodynamisch induziertes, kinetisches Wachstumsmodel für (InxGa1−x)2O3 wird entwickelt, mit dem sich alle makroskopischen Metall-Einbauraten und Desorptionsraten vorhersagen lassen. Mögliche (InxGa1−x)2O3 Strukturen gewachsen mit MBE werden mittels Röntgenkristallographie bestimmt. Mit Hilfe der Röntgenstrukturanalyse wird ein erster makroskopischer Ansatz zur Bestimmung der mikroskopischen In Konzentration X in möglichen (InXGa1−X)2O3 Phasen hergeleitet. Es werden Löslichkeitsgrenzen von In bzw. Ga in monoklinem und kubischem (InXGa1−X)2O3 bestimmt.The present thesis presents a first comprehensive growth investigation and first quantitative growth models of group-III and IV oxides synthesized by oxygen plasma-assisted molecular beam epitaxy (MBE). The developed models include kinetic and thermodynamic effects. The obtained findings are generally valid for fundamental growth processes in other growth techniques, such as pulsed laser deposition and metal-organic vapor phase-epitaxy. The growth rates and desorption rates are measured in-situ by laser reflectometry and quadrupole mass spectrometry (QMS), respectively. The binary transparent semiconducting oxides Ga2O3, In2O3, and SnO2 are investigated. It is known that the growth of group-III and IV oxides is fundamentally different as compared to other semiconductor compounds and due to the existence of suboxides. It is found that the growth rate of the binary oxides investigated is flux-stoichiometrically and thermally limited by the formation and desorption of their respective suboxide. These suboxides are identified as Ga2O for Ga2O3, In2O for In2O3, and SnO for SnO2. A suboxide is a lower oxidation state, and it is shown, that the investigated oxides grow via a two-step oxidation process. That means, all metal oxidizes to the suboxide, and the suboxide can be further oxidized to the thermodynamic stable solid metal-oxide. This two-step oxidation process is the basis for the development of a first quantitative semi-empirical MBE growth model which predicts and explains the measured growth rates and desorption rates, for binary oxides possessing suboxides. The kinetics and thermodynamics of the ternary oxide system (InxGa1−x)2O3, grown by MBE, is investigated. The average In and Ga incorporation rates into a macroscopic volume of (InxGa1−x)2O3 are measured ex-situ by energy dispersive X-ray spectroscopy. These incorporation rates are systematically analyzed and explained in the framework of kinetic and thermodynamic limitations. It is shown that Ga thermodynamically inhibits the incorporation of In into (InxGa1−x)2O3 due to its stronger Ga–O bonds. In this context, a new catalytic-surfactant effect of In on the formation of Ga2O3 is found. As a consequence of this catalytic-surfactant effect the metastable hexagonal Ga2O3 with very high crystal quality is formed. A thermodynamically induced kinetic growth model for (InxGa1−x)2O3 MBE is developed. It predicts all macroscopic metal incorporation rates and desorption rates. Possible (InxGa1−x)2O3 phases grown by MBE are investigated by X-ray crystallography. By means of X-ray diffraction analysis, a first macroscopic approach to determine the microscopic In concentration X in possible (InXGa1−X)2O3 phases is derived. The solubility limits of In and Ga in monoclinic and cubic (InXGa1−X)2O3 phases, respectively, are identified.
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Darestani, Mostafa Yousefi. "Response of concrete pavements under moving vehicular loads and environmental effects." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16662/1/Mostafa_Yousefi_Darestani_Thesis.pdf.
Full textAbstract:
The need for modern transportation systems together with the high demand for sustainable pavements under applied loads have led to a great deal of research on concrete pavements worldwide. Development of finite element techniques enabled researchers to analyse the concrete pavement under a combination of axle group loadings and environmental effects. Consequently, mechanistic approaches for designing of concrete pavements were developed based on results of finite element analyses. However, unpredictable failure modes of concrete pavements associated with expensive maintenance and rehabilitation costs have led to the use of empiricalmechanistic approach in concrete pavement design. Despite progressive knowledge of concrete pavement behaviour under applied loads, concrete pavements still suffer from deterioration due to crack initiation and propagation, indicating the need for further research. Cracks can be related to fatigue of the concrete and/or erosion of materials in sub-layers. Although longitudinal, midedge and corner cracks are the most common damage modes in concrete pavements, Austroads method for concrete pavement design was developed based on traditional mid-edge bottom-up transverse cracking introduced by Packard and Tayabji (1985). Research presented in this thesis aims to address the most common fatigue related distresses in concrete pavements. It uses comprehensive finite element models and analyses to determine the structural behaviour of concrete pavements under vehicular loads and environmental effects. Results of this research are supported by laboratory tests and an experimental field test. Results of this research indicate that the induced tensile stresses within the concrete pavement are significantly affected by vehicle speed, differential temperature gradient and loss of moisture content. Subsequently, the interaction between the above mentioned factors and concrete damage modes are discussed. Typical dynamic amplifications of different axle groups are presented. A new fatigue test setup is also developed to take into consideration effects of pavement curvature on fatigue life of the concrete. Ultimately, results of the research presented in this thesis are employed to develop a new guide for designing concrete pavements with zero maintenance of fatigue damage.
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Darestani, Mostafa Yousefi. "Response of concrete pavements under moving vehicular loads and environmental effects." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16662/.
Full textAbstract:
The need for modern transportation systems together with the high demand for sustainable pavements under applied loads have led to a great deal of research on concrete pavements worldwide. Development of finite element techniques enabled researchers to analyse the concrete pavement under a combination of axle group loadings and environmental effects. Consequently, mechanistic approaches for designing of concrete pavements were developed based on results of finite element analyses. However, unpredictable failure modes of concrete pavements associated with expensive maintenance and rehabilitation costs have led to the use of empiricalmechanistic approach in concrete pavement design. Despite progressive knowledge of concrete pavement behaviour under applied loads, concrete pavements still suffer from deterioration due to crack initiation and propagation, indicating the need for further research. Cracks can be related to fatigue of the concrete and/or erosion of materials in sub-layers. Although longitudinal, midedge and corner cracks are the most common damage modes in concrete pavements, Austroads method for concrete pavement design was developed based on traditional mid-edge bottom-up transverse cracking introduced by Packard and Tayabji (1985). Research presented in this thesis aims to address the most common fatigue related distresses in concrete pavements. It uses comprehensive finite element models and analyses to determine the structural behaviour of concrete pavements under vehicular loads and environmental effects. Results of this research are supported by laboratory tests and an experimental field test. Results of this research indicate that the induced tensile stresses within the concrete pavement are significantly affected by vehicle speed, differential temperature gradient and loss of moisture content. Subsequently, the interaction between the above mentioned factors and concrete damage modes are discussed. Typical dynamic amplifications of different axle groups are presented. A new fatigue test setup is also developed to take into consideration effects of pavement curvature on fatigue life of the concrete. Ultimately, results of the research presented in this thesis are employed to develop a new guide for designing concrete pavements with zero maintenance of fatigue damage.
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Rodríguez, Sánchez Elena Inés. "A new spelling of "Newscast" -- with an "Ñ" : how local television stations in the U.S. can set up a newscast for Hispanics and why /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1422960.
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Benzerga, Mohamed. "Structures réelles sur les surfaces rationnelles." Thesis, Angers, 2016. http://www.theses.fr/2016ANGE0081.
Full textAbstract:
Le but de cette thèse est d’apporter des éléments de réponse au problème de la finitude du nombre de classes de R-isomorphisme de formes réelles d’une surface rationnelle projective complexe lisse X quelconque, i.e. du nombre de classes d’isomorphisme de R-schémas dont le complexifié est isomorphe à X. Nous étudions ce problème en termes de structures réelles (ou involutions antiholomorphes, généralisant la conjugaison complexe) sur X : l’intérêt de cette approche est qu’elle permet une réécriture du problème faisant intervenir les groupes d’automorphismes de surfaces rationnelles, à travers la cohomologie galoisienne. Grâce à des résultats récents concernant ces groupes et en nous appuyant sur de la géométrie hyperbolique et aussi dans une moindre mesure sur de la dynamique holomorphe et de la géométrie métrique, nous prouvons plusieurs résultats généraux de finitude qui dépassent largement le seul cadre des surfaces de Del Pezzo et peuvent s’appliquer à certaines surfaces rationnelles à grands groupes d’automorphismesThe aim of this PhD thesis is to give a partial answer to the finiteness problem for R-isomorphism classes of real forms of any smooth projective complex rational surface X, i.e. for the isomorphism classes of R-schemes whose complexification is isomorphic to X. We study this problem in terms of real structures (or antiholomorphic involutions, which generalize complex conjugation) on X: the advantage of this approach is that it helps us rephrasing our problem with automorphism groups of rational surfaces, via Galois cohomology. Thanks to recent results on these automorphism groups, using hyperbolic geometry and, to a lesser extent, holomorphic dynamics and metric geometry, we prove several finiteness results which go further than Del Pezzo surfaces and can apply to some rational surfaces with large automorphism groups