Thesis (M.P.A.)--University of Hong Kong, 1992.

Thesis (M.P.A.)--University of Hong Kong, 1992. / Also available in print.

Made available in DSpace on 2014-06-12T17:16:59Z (GMT). No. of bitstreams: 2 arquivo3487_1.pdf: 1817342 bytes, checksum: 1faa3d30f1582bb331b81dbfc2ea3cc6 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2008 / Maia de Faria, Bruna; Barrantes Hidalgo, Álvaro. Migração internacional de trabalho qualificado e o fenômeno do brain drain no Brasil. 2008. Dissertação (Mestrado). Programa de Pós-Graduação em Economia, Universidade Federal de Pernambuco, Recife, 2008.

No Brasil, os solos hidromórficos são basicamente utilizados no cultivo de arroz, principalmente na região Sul do Brasil. O plantio de outras culturas em substituição ao arroz, pode ser uma alternativa viável para a melhor exploração destes solos durante o inverno e no pousio da área. O presente trabalho foi realizado em casa de vegetação do Departamento de Engenharia Rural da Escola Superior de Agricultura "Luiz de Queiroz" em Piracicaba, SP, tendo como objetivos avaliar os efeitos do rebaixamento do nível freático no desenvolvimento e na produtividade de plantas de soja, cv. BR-16 e de ervilha, cv. Axé, pelos parâmetros produtivos: altura e massa seca da parte aérea da planta, número de vagens e de grãos produzidos e peso total de grãos por planta; determinar o estádio de desenvolvimento das culturas mais sensível ao excesso de umidade no solo e determinar a velocidade de rebaixamento do nível freático mais adequada ao desenvolvimento das plantas de soja e de ervilha, dentro das condições experimentais propostas. As plantas foram conduzidas em lisímetros construídos em tubos de concreto preenchidos com Latossolo Vermelho-Amarelo Álico. Os ensaios foram realizados nos estádios vegetativo e reprodutivo das culturas, com o rebaixamento do nível freático (NF) em 10, 20, 30, 40 e 60 cm por dia e comparando-se com um tratamento de controle, somente irrigado. O delineamento experimental adotado foi inteiramente casualizado, arranjado em esquema fatorial [(2x5)+1], com 4 repetições. Os efeitos do rebaixamento do NF foram observados na massa seca da parte aérea das plantas, número de vagens, número de grãos por planta e peso de grãos em soja e ervilha, em comparação com as plantas testemunhas. O peso de grãos de soja produzidos em plantas inundadas durante o estádio reprodutivo, foi 3% maior do que verificado na testemunha, indicando que certos períodos de inundação podem aumentar o peso de grãos. Já as plantas de soja inundadas no estádio vegetativo apresentaram reduções significativas de 37% do peso do grão, demonstrando maior susceptibilidade à inundação neste estádio. Foram observadas reduções no peso de grãos de ervilha em ambos os estádios, sendo o reprodutivo o mais afetado (52%). Os efeitos causados pela inundação do solo, observados no número de vagens e de grãos produzidos pelas plantas de soja e de ervilha foram proporcionais ao tempo em que as raízes permaneceram submersas e variaram com a cultura e com estádio de desenvolvimento da planta. Acredita-se que velocidades de rebaixamento do NF superiores a 30 cm por dia são capazes de promover uma adequada aeração do solo, situação observada na rápida recuperação das plantas de soja inundadas no estádio vegetativo e submetidas ao rebaixamento do NF em 30 cm por dia e também no aumento da taxa de transpiração das plantas de ervilha submetidas à inundação do solo no estádio vegetativo e reprodutivo, após o rebaixamento de 30 cm do NF. O maior prejuízo à produtividade das culturas foi causado pela velocidade de rebaixamento do NF em 10 e 20 cm de profundidade. / In Brazil, most of hidromorfic soils are cultivated with rice. The growth of alternative crops to rice, is a feasible option for better use of hidromorfic soils. The present work was realized in the Department of Rural Engineering of Escola Superior de Agricultura "Luiz de Queiroz" in Piracicaba, São Paulo – Brazil. The objectives were to study the effects of the water table drawdown in the growth and crop yield of soybean, cv. BR-16, and pea, cv. Axé, at specific stages of their cycle. Yield parameters for these crops were valuated, such as: plant height, dry shoot weight, number of pods per plant, number of seed per plant and seed weight per plant. Also, to determine the growth stage of crop clycle more sensitive to waterlogging and the more appropriate velocity of water table lowering for to development of soybeans and peas plants, by the analysis of the yield parameters, in the experimental conditions proposed. Both crops were cultivated in lysimeters in a greenhouse. The soil used was the Orthic Hapludent. The study was realized in the vegetative and reproductive crop stages. The water table was lowered by 10, 20, 30, 40 e 60cm per day, from initial level. Control plants where only irrigated without flooding. The statistical experimental design was a randomized complete in factorial arrange [(2x5) + 1] with four replications. The effects from different drawdown velocity of water table, were observed in the all parameters in comparison with the control. For soybean, waterlogging during reproductive stage, caused a higher seed weight than control without waterlogging, showing that short waterlogging periods may increase seed weight. The waterlogging of plants at the vegetative stage crop cycle, showed significant reductions in seed weight in all treatments, indicating low waterlogging tolerance. In pea, the seed weight showed for all treatments was lower than control plants. The effects caused by waterlogging of the soil the number of the pods and soybean and pea seed, were proportional to root flooding time and to development stage of the plant. By physiologic responses of the soybeans and pea plants, was possible to determine that the lower limit of reduction of the water table was the 30 cm per day. The water table lowering by 10 and 20 cm per day severely affected the growth and seed yield, in the experiment conditions.

Stone column treatment is commonly used to mitigate liquefaction hazard in sandy soils. Research and experience indicate that this method is effective for clean sands but that it may not be effective for silts and sands with fines contents greater than 15-20%. An alternative to the stone column method involves supplementing stone column treatment with pre-fabricated vertical wick drains installed prior to the stone columns installation. Although this method is used in practice, there has not been a formal academic study of its effectiveness. This thesis evaluates seven different case histories where wick drains were used and one where wick drains were not used, for comparison purposes. The site locations varied as well as the soil properties and treatment plans. CPT testing was done at 3 sites and SPT testing was performed at the other 5 sites. CPT data were correlated to SPT data to facilitate comparisons. One of the case histories includes a unique study in which three different variations of the stone column treatment were applied at the same site, providing a direct comparison of the effectiveness of each method. A 26% area replacement ratio (Ar) with drains was determined to be more effective overall than a 26% Ar without drains and more effective in increasing low initial blow counts than the 34% Ar without drains. The areas with drains were more likely to exceed the minimum project criteria consistently throughout the site. Significant scatter were observed in the results and probable causes for the scatter are noted. Final blow count coefficients of variation ranged from 28% to 77%. Increased fines contents required increased Ar in order to maintain similar average final blow counts. Site improvements were evaluated separately and collectively. Individual site results were compared to clean sand curves developed by Baez (1995). Sites with average fines contents less than 20% which were improved using drains and an 11-15% Ar treatment were comparable to clean sand sites without drains and with 5-10% Ar. To achieve similar improvement at sites with 40-46% fines necessitated drains and Ar values of 23-26%. Design recommendations are provided.

by Ng Chi-kwong. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1991. / Bibliography: leaf 75. / ABSTRACT --- p.ii / TABLE OF CONTENTS --- p.iii / LIST OF TABLES --- p.v / ACKNOWLEDGMENTS --- p.vi / Chapter I. --- THE 1997 ISSUE --- p.1 / Chapter II. --- EMIGRATION AND BRAIN DRAIN --- p.4 / The Extent of Emigration --- p.4 / The Characteristics of the Emigrating People --- p.7 / The Reasons for Emigration --- p.8 / The Impact of Emigration Turnover on Organizations --- p.10 / Chapter III. --- THE DEMAND OF GRADUATE MANPOWER --- p.13 / Chapter IV. --- RESEARCH OBJECTIVES --- p.16 / Chapter V. --- METHODOLOGY --- p.19 / Research Stages --- p.19 / Research Basis for Stage One --- p.20 / Research Basis for Stage Two and Three --- p.20 / The Sample --- p.21 / Data Collection and Analysis --- p.22 / Chapter VI. --- RESULTS OF THE FIRST STAGE DISCUSSION AND THE GUIDELINES FOR THE IN-DEPTH INTERVIEWS IN THE THIRD STAGE OF PROJECT --- p.24 / Chapter VII. --- RESULTS OF THE STAGE TWO QUESTIONNAIRE SURVEY --- p.33 / Chapter VIII. --- RESULTS OF THE FINAL STAGE IN-DEPTH INTERVIEWS --- p.39 / The Understanding on the 1997 Issue --- p.39 / The Satisfaction About the Present Arrangements for Hong Kong's Future --- p.40 / The Participation in the Local Political Development --- p.41 / The Perceived Functions of Building the Airport --- p.42 / The Emigration Phenomenon in the Profession --- p.43 / The Perceived Effective-ness of the Existing Government Policy to Solve the Brain-drain Problem --- p.47 / The Perceived Impact of the 1997 Issue on the Profession --- p.48 / The Impact on the Trainees' Motivation to Get Recognition in the Profession --- p.52 / Top Management Involvement in the Professional Organization --- p.52 / Chapter IX. --- DISCUSSION --- p.54 / Limitation of the Study --- p.54 / The Difference in the Questionnaire Survey and the In-depth Interviews --- p.55 / Chapter X. --- CONCLUSION --- p.57 / The Reactions and the Opinions of the Civil Engineering Trainees Concerning the1997 Issue --- p.57 / Suggestion for Further Study --- p.58 / Recommendations --- p.59 / Chapter APPENDIX 1: --- QUESTIONNAIRE --- p.61 / Chapter APPENDIX 2: --- THE RESULTS IN THE QUESTIONNAIRE SURVEY --- p.65 / BIBLIOGRAPHY --- p.75

by Andrew Fung Chak Yan & Danny Chan Ka Keung. / Thesis (M.B.A.)--Chinese University of Hong Kong, 1989. / Bibliography: leaves [1]-[2]

Magister Public Health - MPH / Objectives: To document the distribution of medical doctors between the National Health System (NHS), NGOs and the Private Sector over the period 2000-2010; (2) To explore the perceptions of medical doctors (MDs) and human resources managers (HRMs) regarding factors that influence MD internal brain drain in Maputo city, Mozambique, more specifically, the movement of doctors from the Mozambican NHS to NGOs and the private sector within Mozambique.

The continuous evolution of digital technology we enjoy today is the result of ever shrinking, faster and cheaper transistors that make up the ubiquitous integrated circuits of our devices. Over the decades, the industry has gone from purely geometrical scaling to innovative solutions like high-k dielectrics combined with metal gates and FinFETs. A possible future is the use of high mobility materials such as Germanium for the active areas of a transistor instead of Silicon. As a step towards building devices on Ge, we characterize a gate last process with epitaxial deposition of Si0.75Ge0.25 source and drain areas on bulk Si wafers. Devices fabricated are proof-of-concept PMOSFETs and NMOSFETs with channel widths of 10 µm and 40 µm and channel lengths between 0.6 µm and 50 µm. The gate electrode of the fabricated devices is insitu doped polycrystalline Silicon. The devices are electrically characterized through I-V measurements and exhibit a yield of 95%. / Den konstanta utvecklingen av digital teknik som vi åtnjuter idag drivs av den ständiga utvecklingen av transistorer. Dessa blir mer kompakta, snabbare och kostar mindre för varje generation och bygger upp de integrerade kretsar som driver all vår vardagsteknik. Under ett tidsspann på flera decennier har krympningen gått från enbart geometrisk skalning till mer innovativa lösningar. Gate-oxiden har gått från rent kiseldioxid till material med lägre relativ permittivitet vilket möjliggjort en tunnare ekvivalent elektrisk tjocklek än vad som varit möjligt för kiseloxid. FinFet eller så kallade ’tri-gate’ transistorer har ersatt den plana varianten för att öka den ledande arean utan att enheterna sväller ut över substratet. En framtida möjlighet är även att använda material med högre mobilitet för elektroner och hål än kisel där en möjlig kandidat är Germanium. Som ett steg mot målet at bygga Germanium-transistorer tillverkar vi här gate last transistorer med source och drain i in-situ dopad kisel-germanium. Dessa konceptenheter används för att definiera och utveckla tillverkningsprocessen och tillverkas i flera omgångar. Varje skiva innehåller transistorer med en bredd på 40 µm och 10 µm. Kanallängden på transistorerna går mellan 0.6 µm och 50 µm för båda bredderna och av varje enhet finns 101 stycken per kiselskiva (100 mm diameter). Gate-elektroden består i samtliga fall av in-situ dopat poly-kristallint kisel. Enheterna karaktäriseras därefter genom elektriska mätningar och mätdata analyseras och sammanställs. Det visas genom dessa mätningar att ett utfall om över 95% fungerande enheter kan uppnås med processen.

The pre-hospital industry is faced with many challenges, one of which is the skills shortage of advanced life support paramedics in the country. The industry has naturally dictated competition both nationally and internationally for the recruitment of these advanced life support paramedics. Staff turnover has increased as a result of this issue which also has financial implications on the individual business of constant recruitment and turnover. The purpose of this study is to investigate problems that currently exist in the industry with regards to the advanced life support paramedic employment which will provide valuable information on retention strategies and reduce staff turnover.