Thesis (Ph.D.)--University of Hong Kong, 1988. / Also available in print.

Thesis (Ph.D.) - University of Queensland, 2004. / Includes bibliography.

Thesis (Ph.D. (Economics))-University of Pretoria, 2005. / Summary in English. Includes bibliographical references. Available on the Internet via the World Wide Web.

The goal of this paper is to outline the existing perspectives of work-life balance, and to examine how they impact individual well-being and organizational productivity. The benefit of approaching work-life balance through the lens of personal and professional satisfaction is discussed. In addition, the author looks at the relationship between job satisfaction and job performance. The literature shows that satisfaction, well-being, and job performance are all related, and this poses greater implications for organizations. The author concludes with arguments in the present literature on the individual and organizational benefits of organizations adopting work-life balance policies.

ix, 88 p. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. / This dissertation addresses the high disease burden in developing countries today by examining the role of disease in economic development through its impact on productivity, fertility and human capital investment. In the second chapter of this dissertation, I model the impact on labor productivity of a change in disease susceptibility that results from intellectual property rights (IPR) reform. I develop a North-South model in which the disease environments differ between the rich and poor countries, and individuals consume innovated health goods to avoid the cost (labor time lost) of getting a disease. Southern welfare is shown to increase with the imposition of IPR protection when health needs in the South differ sufficiently from those in the North, and when health goods are accessible (in terms of adequate health care infrastructure) and effective (in counteracting disease). In the third chapter of this dissertation, I model the impact of child disease burden on fertility and human capital investment. The fertility response to a decline in child mortality depends on the morbidity effect of the disease, the level of disease burden, and whether prevalence rates or case fatalities decline. Fertility rates follow mortality and morbidity, but since mortality and morbidity do not always move in the same direction, the fertility response may be dampened or non-monotonic. Using a 20-year panel data set on malaria prevalence for 44 countries in sub-Saharan Africa, I find empirical support for the cases defined by the model; changes in malaria prevalence affect fertility more in non-endemic areas, where cases are more severe and more fatal relative to endemic areas. Historical and biological evidence suggest a link between (infectious) diseases early in life and (non-infectious) diseases later in life. In Chapter IV I model this link using a three-period overlapping generations model in which childhood disease outcomes affect longevity. Simulations in a general equilibrium framework duplicate the defining characteristics of the epidemiological-demographic transition as it occurred in many industrialized countries: as disease declines parents engage in a quantity-quality tradeoff for children, longevity rises and population declines after an initial jump. This dissertation includes unpublished co-authored material. / Committee in charge: Shankha Chakraborty, Chairperson, Economics; Bruce Blonigen, Member, Economics; Peter Lambert, Member, Economics; Laura Leete, Member, Planriing Public Policy & Mgmt; Jean Stockard, Outside Member, Planning Public Policy & Mgmt

No description available.

Individual monetary incentive systems usually include performance feedback as part of the intervention package. However, there is no experimental evidence to suggest that feedback has any functional effect on work performance above and beyond the effects of the incentive systems. It may be that incentive systems have such powerful effects on work behavior that the additional contingencies provided by a feedback system are unnecessary. The present laboratory study investigated the supplemental effects of feedback on work performance under a monetary incentive system. Four subjects were hired to work seven hours a day for four and a half weeks. The experimental work task was a simulation of a proof operator’s job at a bank and involved typing dollar values of “checks” into a computer. Subjects were paid a base salary per session plus incentive money for performance above a criterion. The main dependent variable was the number of correctly completed checks per session. The amount of time off task and rate of responding were also investigated. Subjects were exposed to an ABA experimental design involving; (A) the monetary incentive system without performance feedback, (B) the incentive system with performance feedback, and (A) return to the incentive system without performance feedback. The introduction of feedback resulted in small to moderate performance improvements in two of the four subjects. Possible reasons for the small and inconsistent effects were explored with special attention paid to the functional role of feedback and monetary incentives. It was proposed that small amounts of incentive money and performance feedback may not improve productivity in the absence of other stimulus events inherent in real organizational settings, such as the possibility for pay raises, promotions, and/or the threat of being fired. These variables may have function-altering effects on incentive money and performance feedback. Future laboratory simulations might experimentally manipulate these variables to further investigate the efficacy of monetary incentive systems. / Graduate

Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico / O experimento foi conduzido em condiÃÃes de sequeiro, no perÃodo de abril a setembro de 2010, na Fazenda Lavoura Seca, QuixadÃ, CE, no intuito de avaliar a eficiÃncia dos herbicidas diuron (diuron SC), pendimethalin (herbadox 500), e metolachlor (dual gold), em trÃs doses, no controle das plantas daninhas no consÃrcio mamona e feijÃo caupi e o efeito fitotÃxico desses herbicidas sobre a mamona e o feijÃo caupi. No consÃrcio utilizou-se a mamona, cv. BRS ENERGIA e o feijÃo caupi, cv. EPACE 10. As culturas foram plantadas em fileiras alternadas, com os arranjos seguintes: mamona em fileiras no espaÃamento 1,00 x 1,00 m, com uma fileira de feijÃo caupi entre duas fileiras de mamona. As fileiras de feijÃo caupi distaram 0,5 m das de mamona e as plantas dentro da fileira de 0,25 m. Os herbicidas e respectivas doses de ingrediente ativo avaliados foram: metolachor nas doses de (600 g ha-1, 1200 g ha-1 e 1800 g ha-1) diuron (1000 g ha-1, 2000 g ha-1 e 3000 g ha-1) e pendimenthalin (500 g ha-1, 1000 g ha-1 e 1500 g ha-1). Utilizou-se um delineamento experimental de blocos ao acaso, com arranjo fatorial e dois tratamentos adicionais (3x3+2) com 4 repetiÃÃes, exceto na anÃlise da matÃria seca das plantas daninhas onde utilizou-se um arranjo fatorial (3x3+1) com um tratamento adicional (testemunha sem capina). Os herbicidas diuron, pendimethalin e metolachlor foram nÃo seletivos a cultura da mamona causando atrasos na emergÃncia de plÃntulas, crescimento inicial, reduÃÃo dos estandes inicial e final, reduÃÃo da altura das plantas e decrÃscimos significativos na produtividade da cultura. No entanto, os mesmo herbicidas foram seletivos à cultura do feijÃo caupi, nÃo alterando a altura das plantas, nÃmero de vagens por planta e estande final. Quanto ao controle das plantas daninhas, avaliado atravÃs do peso da matÃria seca, os melhores resultados foram obtidos com o metolachor e diuron com destaque para a dose de 1800 g de i.a ha-1 do metolachlor, que reduziu de forma significativa o peso seco das plantas daninhas. / The experiment was conducted under rainfed conditions in the period April to September 2010, at Farm Lavoura Seca, QuixadÃ-CE, in order to evaluate the efficiency of diuron (Diuron SC), pendimethalin (herbadox 500), and metolachlor ( Dual Gold) in three doses on weed control in cowpea and castor bean intercropping and the phytotoxic effect of herbicides on the castor bean and cowpea. In the intercropping used the castor bean, cv. BRS ENERGY and the cowpea, cv. EPACE 10. The crops were planted in alternate rows, with the following arrangements: castor beans in rows with spacing 1.00 x 1.00 m, with a row of cowpea between two rows of castor oil. The rows of cowpea were far from castor 0.5 m and the plants within the row of 0.25 m. The herbicides and doses of active ingredient were: metolachor at doses (600 g ha-1, 1200 g ha-1 and 1800 g ha-1) diuron (1000 g ha-1, 2000 g ha-1 and 3000 g ha-1) and pendimenthalin (500 g ha-1, 1000 g ha-1 and 1500 g ha-1). We used a randomized block design, with factorial arrangement and two additional treatments (3x3 +2) with four replications, except in the analysis of dry matter of weeds where we used a factorial arrangement (3x3 +1) with a additional treatment (control without weeding). The herbicides diuron, metolachlor and pendimethalin were not selective castor bean crops causing delays in seedling emergence, early growth, reducing the initial and final stands, reduced plant height and significant decreases in yield. However, the same herbicides were harmless to the crop of cowpea, not changing the plant height, number of pods per plant and final stand. As for weed control as measured by the dry weight, the best results were obtained with diuron metolachor and especially a dose of 1800 g ai ha-1 of metolachlor, which significantly reduced the dry weight of weeds.

Qual a idéia de história anunciada nos últimos textos de Merleau-Ponty? Que impasses ela procura resolver? Pareceu-nos que responder a essas questões exigia, de início, reavaliar os limites da filosofia da história presente no existencialismo de ju-ventude de Merleau-Ponty, ainda preso aos marcos de uma certa filosofia da consciên-cia. A partir da análise desses limites, procuramos reconstruir o trajeto que levou Merle-au-Ponty a reescrever seu conceito de história. Tentamos fazê-lo em dois momentos. No primeiro, trata-se de recompor o modo pelo qual, nos anos 50, Merleau-Ponty pensará a racionalidade do mundo da cultura, através das idéias de instituição de sentido e de estrutura diacrítica. A ela corresponderá uma idéia do sentido da história (pública, cultural) como núcleos inteligíveis ou afinidades eletivas. No segundo momento, será preciso perguntar em qual concepção de experiência podem se estribar aquelas no-vas análises acerca do mundo cultural. No lógos silencioso operante no mundo sensível, descobriremos a produtividade ontológica de uma Natureza já significante antes dos atos da consciência, o que retira da produtividade humana o papel de protagonista que lhe era dado nos textos de juventude. Tentaremos, por fim, esboçar que contornos isso acarretaria para idéia de uma história ontológica, anunciada pelos tetos finais de Mer-leau-Ponty. / Which idea of history is announced in Merleau-Pontys last writings? Which difficulties it intends to solve? In order to answer those questions, it seemed necessary to reexamine the limits of the philosophy of history characteristic of the philosophers early existentialism, still attached to a certain philosophy of consciousness. Once those limits were established, we tried to retrace the path that led Merleau-Ponty in rewrit-ing his concept of history. We tried to do it in two moments. Firstly, we analyzed the way in which Merleau-Ponty, in the early fifties, understood the cultural worlds ration-ality through the concepts of institution of meaning and diacritical structure. This goes along with an idea of history that is centered on the notion of elective affinities. Secondly, we tried to establish the concept of experience presupposed by these new analysis of the cultural world. In the sensible worlds silent lógos, Nature proved itself to be already meaningful independently of the acts of consciousness. That alters the role attributed to human productivity in Merleau-Pontys earlier texts. Finally we tried to comment on the notion of an ontological history, which can be found in the later texts of Merleau-Ponty.

M.Sc. (Botany) / Eight sampling points were selected on the Jukskei River so that the impact of inflows from various localities on the quality of the river water could be determined. Samples were taken every two weeks from the 4th April 1983 to 19th March 1984. The temperature, conductivity, dissolved oxygen and pH of the water were determined on site. Determinations of total phosphorus (as p-po1-), nitrate (NO), chloride (C11 and chlorophyll a were done. After filtration the water of each sample was inoculated with Euglena gracilis and incubated for four days under controlled conditions after which the Euglena chlorophyll-content, primary productivity and biological growth potential were measured...