Memoria (licenciado en ciencias jurídicas y sociales) / No autorizada por el autor para ser publicada a texto completo / Sentencias emanadas de la Corte Suprema, recopiladas en los Archivos de dicho Tribunal durante el período comprendido entre entre el 14 de octubre de 1997 al 4 de Noviembre del mismo año. Total de documentos analizados: 300.

Orientador: Paulo R. Davidoff C. Cruz / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Economia / Made available in DSpace on 2018-07-23T20:13:28Z (GMT). No. of bitstreams: 1 Buratini_Ricardo_M.pdf: 5357713 bytes, checksum: e75bba87d945c9a7e355d794af3935c2 (MD5) Previous issue date: 1998 / Resumo: Não informado / Abstract: Not informed. / Mestrado / Mestre em Economia

Superconductivity continues to be of great theoretical and practical interest and remains a challenging area of scientific inquiry. Most superconductors of practical utility are of type-II, i.e., they allow the penetration of magnetic fields in the form of tubes of flux that are referred to as "vortices." Motion of these vortices due to, e.g., applied currents, induce a loss of perfect conductivity. Knowing how vortices move and arrange themselves in lattice structures, how their movement is suppressed by pinning mechanisms, and how their movement is affected by thermal fluctuations is critical to understanding how to maintain resistanceless current flow. We study a variety of Ginzburg-Landau type models for superconductivity that can account for inhomogeneous and isotropy materials, grain boundaries, and thermal fluctuations. We develop robust, accurate, and efficient numerical codes and apply them to numerous studies of how vortex motions are affected by the various mechanisms mentioned above. We also examine some analytical aspects of type-II superconductors under the influence of thermal fluctuations. / Ph. D.

The world is shifting into an unprecedented technological age. Towns such as Blacksburg, Virginia, are now being called "electronic villages" with electronic infrastructure which not only ties together all aspects of the town but also connects the town to the world. Reality becomes "virtual" with information unimpeded by time and distance. This rapid advancement in electronical technology is having an impact on world educational systems. Those planning the future of education have a need to know what directions this new technology might take in order to interface such technologies with the schools. The purpose of this study was to predict which present and emerging electronic technologies would be in significant use in the K-12 schools of the year 2000. The Delphi technique was used to gather predictions from an expert panel of teachers, administrators, electronic media specialists, and those working in the technology industries. The predictions were gathered from winter 1994 to fall 1995 for the year 2000, taking into account the need for a reasonably accurate prediction which could be used for those now engaged in short-term planning and those engaged in generating the appropriate technologies for the schools. The types of present and emerging electronic technologies "to be found in K-12 schools of the year 2000 were solicited in round one of the study. Rounds two and three identified which technologies would indeed be in significant usage. Using a scale of 1 to 4 (1= very unimportant, 2= unimportant, 3=important, 4= very important), a group mean and standard deviation were calculated for each identified technology. Those technologies with a mean score of 3.00 or higher in round three were predicted to be those likely or very likely to be used in the K-12 schools of the year 2000. / Ed. D.

The purpose of this study was to determine how three female superintendents attained their positions given the notable underrepresentation of women in superintendency positions. The research questions to be investigated were: (1) What are the forces or factors that have assisted those three women who have become superintendent? (2) What are the forces or factors that have served as barriers in the process those three women went through in achieving appointments as superintendents? (3) What strategies did they use in overcoming barriers to their achievement of appointment as superintendent? (4) What situations or events have been beneficial to their achievement of appointment as superintendent? A multiple-case study design and multiple data gathering methods were utilized in this study. The career paths of three women employed as public school superintendents in Virginia were investigated. A questionnaire was developed to collect data for the study. The instrument consisted of twenty-five questions with open-ended responses. Data were collected through interviews and document analysis to determine the barriers these female superintendents perceived, the strategies they employed to overcome barriers, and the factors which had an impact on their obtaining the position of superintendent. Material gathered during the interviews were transcribed and coded using the Ethnograph software program. Common patterns, themes and concepts emerged, and key statements and important stories shared by the participants were summarized. The researcher presented a descriptive narrative case study profile of each superintendent. Recommendations for further research were provided. / Ed. D.

Rap music and its affect on the lives of adolescents has been a controversial topic since the mid-1970s. The celebratory and inflammatory aspects of rap and the often negative media coverage of rap music and rap artists have placed the questionable art form at the forefront of popular controversy. Rappers often struggle with the tension between fame and rap's gravitational pull toward inner city narratives; generally, rappers craft stories that represent the creative fantasies, perspectives, and experiences of racial marginality in America. Effort to make meaning of this art form and its perceived affect on contemporary American youth is at best obscure. Rap music is often deemed noisy, nonsensical, and absent of sustenance by strongholds of popular culture. Rap's controversial landscape tends to be inundated with the following questions in regard to its affect on the lives of adolescents: Can violent images incite violent action; can music enhance the political mobilization of the disenfranchised; and whether or not sexually explicit lyrics contribute to the moral "decay" of contemporary American society? / Ph. D.

This study investigated the effects of access to a test item pool on student achievement and study habits in an Introduction to Microcomputers class at Southwest Virginia Community College. The class was planned, delivered, and evaluated using Vogler's Curriculum-Pedagogy-Assessment (CPA) model. The study was designed as a quasi-experimental study. Three groups were used in the study: two treatment groups and a control group. A test item pool was furnished as study questions for the two treatment groups defined as unlimited access and just-in-time access groups. A control group did not have access to the study questions. The unlimited access group received all questions on computer disk at the beginning of the course. The questions were not grouped by topic but rather were grouped by question type. The just-in-time access group received a group of questions each week that pertained to the topic being studied for the week. / Ed. D.

Studies were conducted to determine the macrohabitat factors structuring high quality mussel habitat in the Clinch and Little rivers. In the first habitat study, 4 substratum variables, 7 channel morphology variables, and 3 stream and valley variables were compared between high and low mussel density aggregations from 6 study reaches. Wilcoxon rank-sum tests were conducted separately for all transects, unbraided (without islands) transects, and braided (anastomosing river channels with islands) transects. Stepwise discriminant analysis (SDA) was used in the first habitat study to identify variables which best differentiated high and low mussel density transect groups. Percent bedrock (PBR) (p>F=0.002), d50 particle size (p>F=0.03), and mean depth (MDEP) (p>F=0.11) were the most useful predictors (cumulative average squared canonical correlation (ASCC) = 0.30) when SDA was performed on all transects (n = 66). The ASCC values improved substantially when unbraided and braided transects were analyzed separately. PBR (p>F=0.0001), d84 particle size (p>F=0.05), MDEP (p>F=0.03), and direction of streamflow (DIR) (p>F=0.05) were selected by SDA (cumulative ASCC = 0.52) for unbraided transects (n = 43), and proximity to floodplain (PROX) (p>F=0.0008) and PBR (p>F=0.005) were selected by SDA (cumulative ASCC = 0.61) for braided transects (n = 23). In the second habitat study, 14 habitat variables were compared between high and low quality mussel sites documented in a TVA survey (1986). The variables PBR (p>F=0.0001), d84 (p>F=0.0001), DIR (p>F=0.09), and valley floor width (VFW) (p>F=0.05) were selected by SDA (cumulative ASCC = 0.69) when all sites were included in the analysis; and PBR (p>F=0.0095), d84 (p>F=0.004), d50 (p>F=0.15), and DIR (p>F=0.07) were selected (cumulative ASCC = 0.62) when only unbraided sites were included in the analysis. Mussels were associated with areas of smaller mean particle size with low exposed bedrock in the channel cross-section. Site location patterns for the entire TVA data set (n = 141 sites) were examined for patterns relative to streamflow direction. The greatest frequency of high quality unbraided sites occurred where the river flows in the direction of geologic dip. High quality braided sites occurred where the river flows along the line of geologic strike. The orientation of bedrock ledges relative to direction of streamflow seemingly determines the long-term stability of mussel habitat in unbraided reaches by retaining streambed alluvium during high discharge events. / Ph. D.

The purpose of this study was to explore the funding patterns and sources of adult basic education (ABE) provided by community based organizations (CBOs) and to determine their success in attracting funding from external sources such as corporations, foundations, charitable and philanthropic organizations. This study sought to develop an understanding of the involvement of community based organizations in delivering adult basic education services, their funding sources and patterns by identifying who the funders were, and why they made financial contributions to CBOs. This study was exploratory and descriptive in nature, designed to deal with the lack of methodical inquiry regarding the funding pattern and sources of CBOs who deliver ABE. It was designed to bridge the gap iii between the assumed notions of the importance of CBOs and their actual levels of funding from a variety of sources. / Ph. D.

The major purpose of this study was to determine the extent that school board policy dealing with police involvement in public high schools in the Commonwealth of Virginia matched policy and rules suggested by the NASSP. An additional purpose was to identify pertinent criteria to guide school divisions in the construction of policy pertaining to the police-school relationship. The study had two phases. Phase I included a questionnaire that was mailed to all public school superintendents. The superintendents were asked: (1) if there were police assigned to their high schools, (2) if police were utilized in dealing with specific situations in their high schools, and (3) if their school division had policy, rules and regulations governing the actions of the principals when they interact with the police in their buildings. The superintendents were also asked to provide copies of their division’s policy and regulations. In Phase II of the study, principals and police officers from four high schools were interviewed to determine administrative practices when interacting with the police. The questionnaire results, returned copies of policy and regulations, and interviews were analyzed to determine the extent that each of the items matched suggested criteria presented in the NASSP Legal Memorandum, School Administrators and Law Enforcement Officials (Bartlett, 1994). This study found that twenty four percent of the high schools in the state had full time police officers. Even if police were not assigned to specific schools, law enforcement activities took place in over half of the divisions in the Commonwealth. Eighty percent of the superintendents felt that it is important to have school board policy governing the police-school relationship. There was a wide range of school board policy dealing with the police-school relationship. All data collected were utilized to identify criteria to be considered when developing school board policy and regulations that reflect the needs and practices of Commonwealth of Virginia high school principals. / Ed. D.