<p>The present Master Thesis analyzes the DVB-H radio Frequency Network Planning</p><p>problematic, studying the influence of a propagation model used in the calculation of</p><p>network coverage. In this way, the aim of this work is the design of a procedure and</p><p>algorithm to adjust a propagation model considering measurement campaigns performed in</p><p>different environments (dense-urban, urban, sub-urban and rural).</p><p>The methodology relies on the adjustment of the Xia-Bertoni propagation model</p><p>parameters using the Least Mean Square (LMS) method, considering the collected</p><p>measurements and the simulation model parameters obtained from a Geographic</p><p>Information System (GIS). Coverage simulations and measurement results are compared</p><p>using a 3-Dimensional city model (terrain and buildings) for different terrain topologies</p><p>(flat, hills and canyons) and environments.</p><p>The resulting adjusted model has been tested and compared with other common</p><p>models (COST231 and Okumura-Hata) using specific metrics, thus proving its validity for</p><p>different frequencies, environments and terrain topologies. In order to validate the</p><p>procedure and designed algorithm, this Master Thesis gathers real data from measurement</p><p>campaigns carried out in different cities: Gävle (Sweden), Bucaramanga (Colombia),</p><p>Valencia (Spain) and Munich (Germany). Besides, this work provides an insight on best</p><p>practices to perform measurement campaigns.</p><p>The outcome of this work is a useful tool in radio network planning for DVB-H</p><p>systems, which ensures reliable results in all environments and terrain topologies.</p>

College is recognized by many researchers to be an exceptionally stressful period of development. Despite considerable theoretical and empirical attention, many questions still remain regarding the experience of stress among college students. There is a dearth of multivariate investigations in this area and, to date, no clear consensus exists among researchers as to which coping strategies best attenuate negative affect, and whether male and female students cope with stress in different ways. As such, the purpose of this study was two-fold: (a) to examine the goodness of fit of a model depicting multivariate relations among self-report measures of appraised stress (Cohen, Kamarch, & Mermelstein, 1983), dispositional coping strategies (Carver, 1997), and negative affect (Lovibond & Lovibond, 1997); and (b) to identify, whether the model relations varied by gender. The model, based on previous research with college students (e.g., Dunkley et al., 2000; Soderstrom et al., 2000), specified that students' appraised stress would predict their negative affect, and that coping would partially account for the relation between these variables. Results derived from a large sample (N=1088) of college students (females, n=562; males, n=526) indicated that the model fit the data well, with no observed gender differences. The model pulled together common observations in the stress literature, and a more comprehensive and parsimonious understanding of college student stress has emerged. Overall, the model is a useful heuristic device (a) to understand, assess, and diagnose college student stress, as well as (b) to identify and target specific areas for intervention to promote well-being among college students. / Graduation date: 2004

The ability to distribute signals everywhere in a circuit with controlled and known delays is essential in large, high-speed digital systems. We present a technique by which a signal driver can adjust the arrival time of the signal at the end of the wire using a pair of matched variable delay lines. We show an implemention of this idea requiring no extra wiring, and how it can be extended to distribute signals skew-free to receivers along the signal run. We demonstrate how this scheme fits into the boundary scan logic of a VLSI chip.

Thesis (MA(Clinical Psychology))-University of Pretoria, 2006. / Abstract in English. Includes bibliographical references.

Thesis (M.A.)--York University, 2004. Graduate Programme in Psychology. / Typescript. Includes bibliographical references (leaves 40-47). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: LINK NOT YET AVAILABLE.

This research was undertaken to identify variables that accounted for major changes in academic performance between high school and college. Differences between predicted and actual college GPA were used to classify students as gainers or decliners among a group of sophomores and a group of seniors at a medium-sized research university. A model composed of nine variables was developed to explain the change in performance. Each variable was classified as an Environmental Triggering Mechanism (environmental stimulus), an Internal Psychological state (a cognitive response to the stimulus), or an Academic Behavior. Seven of the variables were derived from the literature of academic achievement in college. Two of the variables were identified in the course of exploratory interviews with senior performance changers. Two-way discriminant function analysis was performed to determine which of the variables contributed most to classifying students as gainers or decliners. Correlation analysis was performed to examine the relationships between variables. Academic expectancies, the number of terms required to adjust to college academically, and the students' approach to study (consistency and priority of study) emerged as making the strongest contribution to the discriminant function for both sophomores and seniors. Significant correlations were found between some, but not all, of the variables in each category, supporting the basic structure of the model. Variables categorized as Environmental Triggering Mechanisms played a secondary role with respect to those Internal Psychological States and Academic Behaviors that contributed most to academic performance change. / Graduation date: 1991

This research aimed to study the academic adjustment of Kaohsiung county junior high PE class students. The goal was to understand the students¡¦ adjustment in school and further to explore whether there were remarkable differences when various backgrounds changed. The research adopted survey research methodology, using ¡§Academic Adjustment Scales¡¨ compiled by the researcher as an overall survey to the PE class students in Kaohsiung county junior high schools. 1435 copies had been sent out and 1064 valid questionnaires were received, with a valid return rate of 74%. Data were analyzed by the package software SPSS 14, using £\¡Õ.05 as a remarkable level, and the analytical methods included descriptive statistics, t-test, and one-way ANOVA etc. The findings of the research are as follows: 1.The overall academic adjustment of the Kaohsiung county junior high PE class students indicated in a fine condition. 2.The total scale and sub scales of the first-year (7th grader) junior high PE class students showed remarkable higher scores. 3.The total scale of academic adjustment and sub scale of learning adjustment indicated remarkable higher scores for female students. 4. For elementary graduates of non-PE classes, the total scale of academic adjustment and sub scale of learning adjustment demonstrated remarkable higher scores. 5.The total scale of academic adjustment and sub scale of learning adjustment for students who received more than five-day specialty training in a week showed remarkable lower scores. 6.The total scale of academic adjustment and sub scale of learning adjustment for students who received less than three-class specialty training in a day showed remarkable higher scores. 7.The total scale of academic adjustment and sub scales of learning adjustment and of teacher-student relationship were remarkable lower for students who had participated more than 11 competitions for this semester. 8.Students spent less than one hour afterschool study showed remarkable lower scores on the total scale of academic adjustment and each sub scale of all categories. 9.Students having five study classes showed remarkable lower scores on the total scale of academic adjustment, sub scales of learning adjustment and of physical training adjustment.

This dissertation, containing two journal-formatted manuscripts, examines factors associated with international students' psychosocial adjustment to life in the United States. In the first manuscript, I systematically reviewed 64 studies reporting predictors of international student adjustment, which were published in English language peer-reviewed journals from 1990 to 2008. I summarized predictors by adjustment outcomes and assessed the methodological quality of individual studies. In the second manuscript, I investigated mechanisms through which acculturation influenced psychosocial adjustment of Chinese international students, by electronically surveying a sample of 508 Chinese international students from four universities in Texas. Specifically, the mechanisms investigated in this report refer to the mediating and moderating effects of social interaction and social connectedness with host nationals upon the acculturation-adjustment linkages. Results portrayed in the first manuscript showed stress, social support, English language proficiency, region/country of origin, length of residence in the United States, acculturation, social interaction with Americans, self-efficacy, gender, and personality were among the most frequently reported predictors of international students' psychosocial adjustment. The mean methodological score of the reviewed studies was 6.25 (SD=1.8; maximum possible score=11). The reviewed studies overcame selected methodological limitations pointed out by Church in his review, but show room for continued improvement. Results portrayed in the second manuscript showed social connectedness with Americans mediated the links between adherence to the host culture (acculturation dimension) and psychosocial adjustment. Social interaction with Americans moderated the association between adherence to the home culture (acculturation dimension) and depression. Findings from this dissertation have implications for health promotion research and practice. First, this dissertation calls for a revision in the sojourner adjustment framework to address the shared elements underlying both adjustment domains (psychological and sociocultural). Second, more studies are needed to a) examine macro-level factors and currently under-investigated micro-level factors, b) test theories that integrate micro- and macro-level factors, c) examine mediation and moderation effects, and d) systematically employ longitudinal designs and comparison groups. Third, health promotion professionals would do well to address predictors and mechanisms found in this dissertation when developing evidence-based interventions for international students.

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This study is targeted on the high grade elementary school students in Kaohsiung City¡Aand aims to look into the relation of parenting styles¡Aattachment relationship¡Aand life adjustment . Based on the discussion on relevant literatures,the theory,framework,and research tools adoptted in the research are thus developted.In this research, 1160 elementary school students are targeted to fill in this questionnaires and 1058 effetcive questionnaires are acquired.The research tools consist of ¡§Parenting Styles Scale¡¨, ¡§Attachment Relationship Scale¡¨, and ¡§Life Adjustment Scale¡¨.The effective samplings are analyzed by t-test, One-way ANOVA, Pearson Product¡Ðmoment Correlation and ,Multiple Regression. The conclusions are as follows: 1. The whole performance of the elementary school students¡¦ parenting styles is good.Among the sectional scores,the dimension of demands is the highest. 2. The whole performance of the elementary school students¡¦ attachment relationship is good.Among the sectional scores, the dimension of alienation is the highest. 3. The whole performance of the elementary school students¡¦ life adjustment is good.Among the sectional scores, the dimension of family¡¦s adjustment is the highest. 4. The students of the fifth grade¡Atwo parents family¡Amiddle SES have a higher sense of the awareness of the parenting styles . 5. The girls,the fifth grade¡Amiddle SES have a higher sense of the awareness of the attachment relationship . 6. The girls,the fifth grade¡Ahigh and middle SES have a higher sense of the awareness of the life adjustment . 7. The clearer the students¡¦ parenting styles will be,the better attachment relationship will be. 8. The clearer the students¡¦ parenting styles will be,the better life adjustment will be. 9. The clearer the students¡¦ attachment relationship will be,the better life adjustment will be. 10. Students¡¦ backgrounds, parenting styles and attachment relationship have predicative efficacy for students¡¦ life adjustment. ¡§Mother¡¦s trust ¡¨can predict students¡¦ life adjustment best.