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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
81

Análise econômica dos indicadores de continuidade da Celg Distribuição / Economic analysis of the indicators of continuity of Celg Distribution

Lauro, Marcos Eduardo de Souza 13 July 2018 (has links)
Submitted by Liliane Ferreira (ljuvencia30@gmail.com) on 2018-07-20T11:48:13Z No. of bitstreams: 2 Dissertação - Marcos Eduardo de Souza Lauro - 2018.pdf: 2144486 bytes, checksum: e3297466fed7157ebeb44ccefd128da8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-07-23T12:04:22Z (GMT) No. of bitstreams: 2 Dissertação - Marcos Eduardo de Souza Lauro - 2018.pdf: 2144486 bytes, checksum: e3297466fed7157ebeb44ccefd128da8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-07-23T12:04:22Z (GMT). No. of bitstreams: 2 Dissertação - Marcos Eduardo de Souza Lauro - 2018.pdf: 2144486 bytes, checksum: e3297466fed7157ebeb44ccefd128da8 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-07-13 / The present dissertation aims to evaluate the quality of the service provided by Celg Distribuição, through its continuity indicators, in order to propose improvement actions for the company. The collective indicators of duration and the equivalent frequency of interruptions (DEC and FEC), using a database formed from more than 200 data sets, are evaluated through unpublished methodologies for the theme, spatial analysis and decomposition of Oaxaca, with 200 million of observations related to all interruptions between 2014 and 2016 in the concession area of ​​the distributor. The main results indicate that there is a structural problem with the extrapolation of the regulatory limits of the distributor's indicators, placing it as the worst distributor in Brazil in recent years, a problem that was accentuated by the transfer of control of the State of Goiás to the Union in 2011. This problem presents a heterogeneous problem along the 200,000 km² area of ​​the concession area, whose problem is concentrated in the interior regions of the State of Goiás. In addition, there are significant differences regarding the the Metropolitan Region of Goiânia (REMG) and the interior of the State regarding the durations of the power outages. With the research, four actions are proposed for the company, being they to apply actions of the best electrical assemblies to those where the situation is more critical; to request the regulatory body to redefine regulatory limits; identify the primary cause of the outage; define a specific maintenance policy for the interior of the state of Goiás, a region whose continuity problem is more pronounced than in Goiânia. / A presente dissertação tem o objetivo de avaliar a qualidade do serviço prestado pela Celg Distribuição, por meio de seus indicadores de continuidade, a fim de propor ações de melhoria para a empresa. Avalia-se, por meio de metodologias inéditas para o tema, análise espacial e decomposição de Oaxaca, os indicadores coletivos de duração e frequência equivalente das interrupções (DEC e FEC), por meio de uma base de dados formada a partir de mais de 200 milhões de observações, relativas à todas as interrupções ocorridas entre 2014 e 2016 na área de concessão da distribuidora. Os principais resultados apontam que há um problema estrutural com a extrapolação dos limites regulatórios dos indicadores da distribuidora, colocando-a como pior distribuidora do Brasil nos últimos anos, problema que foi acentuado a partir da transferência de controle acionário do Estado de Goiás para a União, em 2011. Este problema apresenta-se de forma heterogênea ao longo dos cerca de 200 mil km² da área de concessão, cujo problema se concentra nas regiões do interior do Estado de Goiás. Além disso, verifica-se diferenças relevantes no que tange a região metropolitana de Goiânia (REMG) e o interior do Estado quanto às durações das quedas de energia. Com a pesquisa, quatro ações são propostas para a empresa, sendo elas a de aplicar ações dos melhores conjuntos elétricos àqueles onde a situação é mais crítica; pleitear junto ao órgão regulador a redefinição dos limites regulatórios; identificar a causa primária da interrupção e; definir uma política de manutenção específica para o interior do estado de Goiás, região cujo problema da continuidade é mais acentuado que na Grande Goiânia.
82

Gender Based Inequalities in Labor Market Outcomes / Genderové rozdíly na trhu práce

Pecháčková, Monika January 2013 (has links)
This thesis focuses on gender based differences in occupational allocation in Central-European countries, i.e. in Croatia, the Czech Republic, Hungary, Poland, Slovakia and Slovenia. The main goal is to find out how much of the gender differences is related to women being equipped with higher/lower human capital in comparison to men. This thesis uses data from 2010 Life in Transition Survey provided by the European Bank for Reconstruction and Development. Focus will be placed on white/blue collar occupations split. For the empirical analysis an extension of the Oaxaca-Blinder decomposition for binary dependent variable model provided by Fairlie (2005) will be used.
83

Mining memory: contention and social memory in a Oaxacan territorial defense struggle

Macias, Anthony William 23 September 2014 (has links)
Faced with the profound social and ecological threats posed by extractivist projects such as large hydroelectric dams, wind farms, and mining operations, many indigenous communities and their allies in Mexico have articulated new forms of contentious politics into a broad territorial defense movement. This project explores the strategies of contention practiced by an anti-mining movement based in the Municipality of San José del Progreso in the southern state of Oaxaca. As a deeply-divided community that has suffered increased violence and conflict directly related to a Canadian-owned gold and silver mine operating in its vicinity, it presents a valuable case study in how strong social movements can still develop under conditions of disunity. This study combines ethnographic and archival research methods to uncover the deep historical roots of community division, and to develop a close analysis of the contentious strategies employed by the anti-mining movement. The historical record and local narratives show the central role that hacienda colonialism played in creating a salient geography of ethnic discrimination and division in the municipality whose effects can still be seen today. In response to the ongoing processes of colonization and dispossession in San José del Progreso, a legacy of contention has defined and defended both campesino (peasant farmer) and indigenous claims to local territory. More than a series of instrumental strategies designed to expel the hacienda and later mine project, this politics of contention operates as a form of social memory to produce a hybrid form of indigenous/campesino identity linked to healthy land stewardship, an interconnectedness between the earth and human subjects, and a shared history of struggle. As a result, the anti-mining movement in San José del Progreso has shown success in converting its troubled past and checkered present into the foundations of a healthy social and ecological commons, independent of its failure to fully-unite the municipality or close down the mine project in the short-run. / text
84

Carbon and nitrogen cycling in a tree-grass inter-cropping system in the humid tropics of Mexico

Hernández Daumás, Salvador January 2000 (has links)
This work aimed to contribute to the understanding of tree - grass inter-cropping interactions so that the productivity and sustainability of extensive livestock husbandry can be increased. The work was carried out in the context of a small farm in Oaxaca, Mexico, where increases in productivity are limited by shortage of capital and where the tree component would be used as green manure. It is difficult to investigate the effectiveness of such a system by only using conventional field trials. I constructed a mathematical model to simulate how the main components of the system function under conditions that would not be evaluated in the field. Issues such as how many trees to plant and what tree species combine with grass cattle and environment, can be answered with the model. The particular features of the model are: 1) It describes an agro-ecosystem where trees perform several biological functions like nitrogen capture for use in the silvopastoral system, 2) It links grass and trees with the animal and 3) Nutrient availability depends mainly on soil organic matter decomposition and mineralisation rather than on external inputs. The present research consisted of 1) constructing the model prototype using data from the literature, 2) conducting field experiments to investigate the actual performance of the silvopastoral system, 3) perform laboratory research and greenhouse experiments complementarily to the field experiments and 4) elaborate on the carbon and nitrogen balance of the silvopastoral experiment, by combining research results and the mathematical model. The field experiment consisted of an array of 13 plots with one of the tree species Gliricidia sepium, Leucaena leucocephala, Delonix regia and Lysiloma auritum in a gradient of plant densities within a Brachiaria decumbens paddock. Results showed that the presence of trees in pastures is potentially useful for retaining nitrogen and carbon that would be lost in the grass mono-crop. Trees did not incorporate nitrogen through biological fixation, perhaps because the lack of adequate nodulation and they did not established their rooting systems to a depth beyond the grass roots (> 1.20m) so as to recover leached nutrients. However, trees produced mulch that was rich in nitrogen (3.8%) and whose decomposition rate ensures a slow release to prevent leaching. At the plant density used, the tree population caused no harm to grass as to production and nutritive value. Further increments in tree density in order to improve the potential for nitrogen capture should be evaluated in terms of the reduction of grass production. Several biological attributes of the species were determined, in some cases for the first time: biomass productivity, specific leaf area, nutritive value, phenolic content, root biomass, grass root longevity, root vertical distribution, etc. Such characterisation is useful for the understanding of the system inter-cropping and specially for the parameterisation of the silvopastoral model. Even though the mixtures proved able to survive for the span of the experiment, the sustainability of tree - grass inter-cropping as to the stabilisation of soil fertility requires longer monitoring. Other limiting factors such as phosphorus availability and the management of grazing systems have to be incorporated for an adequate evaluation of the silvopastoral system.
85

Agricultural performance in northern Ghana: a gender decomposition

Gutierrez Pionce, Elizabeth Gabriela January 1900 (has links)
Master of Science / Department of Agricultural Economics / Vincent R. Amanor-Boadu / Women represent approximately 50 percent of the active labor force in Sub-Saharan Africa. Even though women are involved in a variety of agricultural activities, they have limited access to resources and have restricted decision-making power compared to their male counterparts (FAO, 2011). These limitations and restrictions are likely to have a significant effect on women’s performance levels compared to men. The present research measures the gender-based performance differences, identifies factors that influence the financial performance levels, and factors contributing to generate disparities between male and female smallholders performance in northern Ghana. Data used in this study are from the Agriculture Production Survey (APS) focusing on the 2013-2014 cropping season. The study uses the Oaxaca-Blinder decomposition method to measure and decompose the gender performance gap in two parts: endowment effect and structural effect. Gross margin is used to measure farmer’s financial performance. The endowment effect is attributed to differences in the explanatory variables, and the structural effect is associated with differences in returns of the explanatory variables. Results from the study indicate there is a gender gap between male and female smallholder farmers with male farmers outperforming females by 46 percent. Land area had the largest significant impact on the explained part of the gender gap, followed by tractor service. The endowment effect portion of the decomposition models is accounted for 35 percent of the gender gap, and the remaining 65 percent is associated with the structural effect. The larger structural effect part suggests that developing programs to establish equality among male and female smallholder producers in terms of access to resources will not close the gender gap. Additionally, factors contributing positively overall to gross margin of smallholder farmers were land area, and tractor services and crops produced. Based on the results of this research, policymakers and agribusiness stakeholders may look to reduce the gender gap existing between smallholder farmers in northern Ghana by empowering women by providing them access to land area and tractor services. Further research into factors affecting the gender gap in financial performance in agricultural activities is warranted.
86

Skillnaden i sannolikhet att vara arbetslös mellan inrikes- och utrikes födda

Ezzulddin, Omar, Haydari, Farid January 2019 (has links)
Drawing on European Social Survey, the main objective of this essay is to analyse the difference in the probability of being unemployed between natives and foreign born in Sweden. Using traditional statistical methods such as Linear Probability Model (LPM) and Blinder-Oaxaca decomposition and controlling for standard socio-economic variables we found that immigrants born in Europe have 5.3 percentage point higher likelihood of being unemployed compared to their Swedish counterpart. Regarding non-European we found that they have 5.2 percentage points higher probability of being unemployed compared to Swedish counterpart. An extension of BlinderOaxaca decomposition suggests that 4.9 percentage points of this gap is due to differences in endowment characteristics between immigrants born in Europe and Swedish counterpart. The difference in the characteristics between nonEuropean and natives amounts to 5.3 percentage points. On the other hand, approximately 1.5 and 10.3 percentage points of the differences in the unemployment probability between immigrants born in Europe and countries outside Europe and Swedish counterpart can be ascribe to different returns to those observable and/or unobservable characteristics that are not captured in the models.
87

Fatores socioeconômicos e psicossociais relacionados à prevalência da depressão no Brasil

Silveira, Eduardo Fernandes da January 2016 (has links)
Esta dissertação analisa os impactos de fatores socioeconômicos e psicossociais sobre a prevalência da depressão no Brasil através de modelos probit e da decomposição de Oaxaca-Blinder aplicados às bases de dados dos suplementos de saúde da Pesquisa Nacional por Amostra de Domicílios (PNAD Saúde) e da Pesquisa Nacional de Saúde 2013 (PNS 2013). Neste trabalho, foram usados dois critérios básicos de identificação de indivíduos deprimidos: os que referiram ter recebido o diagnóstico de depressão de algum profissional de saúde e os que obtiveram um escore superior a 4 no teste PHQ-9 (cujas perguntas constam na PNS 2013). Foram obtidos resultados estatisticamente significativos, evidenciando a maior probabilidade da depressão entre mulheres e a relação inversa do transtorno com as variáveis renda domiciliar, desemprego, escolaridade e idade. Fatores como doenças físicas, doenças mentais e deficiências demonstraram uma relação direta com a depressão, embora as quantificações de suas magnitudes tenham sido sensíveis à especificação dos modelos. Também mostraram uma relação direta com o transtorno depressivo variáveis associadas a traumas e estresse emocional (como ter perdido um filho, ter sofrido algum tipo de violência, ter um filho com problemas de saúde, etc.). Outras variáveis como raça e região geográfica apresentaram resultados ambivalentes, também sensíveis às diferentes especificações de modelo. Ainda, variáveis referentes ao mercado de trabalho como o tipo de vínculo empregatício e setor de atividade apresentaram resultados inconclusivos. Por fim, outra conclusão importante foi que o critério de identificação dos indivíduos com depressão é determinante nos resultados. / This dissertation analyses the impacts of socioeconomic and psychosocial factors over the prevalence of depression in Brazil through probit models and the Oaxaca-Blinder decomposition applied to the data in Brazilian National Household Survey Health Supplement (PNAD Saúde) and the National Health Survey (PNS 2013). In this dissertation, two basic criteria were used to identify individuals with depression: those who declared to have received a depression diagnosis from a health professional and those who scored more than 4 in the PHQ-9 depression test (whose questions are included in PNS 2013). Statistically significant results were found, showing a higher probability of depression among women and an inverse relationship between the disorder and household income, unemployment, education and age. Factors such as chronic physical diseases, mental illnesses and deficiencies have showed a direct relationship with depression, although the quantification of such effects had a rather high sensitivity to model specification. Also, variables associated with emotional stress (such as having lost a child, being victim of some sort of violence, having a child with health problems) showed a direct relationship with depressive disorder. Other variables such as race and geographic region showed ambivalent results also very sensitive to different model specifications. Furthermore, labor market variables like type of work contract and activity sector show inconclusive results. Finally, another important finding is that the criteria for identifying individuals with depression were determinant for the results and conclusions.
88

Coastal/highland interaction in prehispanic Oaxaca, Mexico the perspective from San Francisco de Arriba /

Workinger, Andrew G. January 2002 (has links) (PDF)
Thesis (Ph.D.)--Vanderbilt University, 2002. / Includes bibliographical references.
89

The San José project : mining, repression and resistance in Oaxaca

Williams, Edward Sansom 21 February 2011 (has links)
This report chronicles a conflict over a Canadian-owned silver and gold mine in San José del Progreso, Oaxaca, as told by the author’s first-hand experience, eyewitness interviews, and research. Beginning with the Mexican Federal Government’s concession of ejidal land for use by the mining company, without the consent or consultation of the surrounding population, elaboration of the Trinidad mine in San José del Progreso has resulted in division in the community and intense activism, sometimes resulting in violent conflict. / text
90

Grammatical sketch of Teotepec Chatino

McIntosh, Justin Daniel 29 July 2011 (has links)
Teotepec Chatino is a Zapotecan language of the Otomanguean stock, spoken in the Southeastern Sierra Madre, in the state of Oaxaca, Mexico. Although other varieties of the Chatino language family have been described - Panixtlahuaca (Pride, 1963; Pride and Pride, 2004), Yaitepec (Rasch, 2002), Quiahije (Cruz, E, 2004; Cruz, E. et al., 2008), Tataltepec (Pride and Pride, 1970; Pride, 1984), Zacatepec (Villard, 2008), Zenzontepec (Campbell, 2009; Carleton, 2000) - there are no previous descriptions of Teotepec Chatino. Among the many interesting features of Teotepec Chatino is an inventory of twelve lexical tones. These tones distinguish between lexical items and have grammatical func- tions. The basic word order is VSO, however the language exhibits the alternative orders of SVO and OVS. These orders have specific semantic and pragmatic functions. The language has aspectual prefixes and some derivational patterns. There is verbal and nominal com- pounding which plays an important role in the formation of complex concepts. Animate direct objects are optionally marked by 7įᴿ ‘to’. The presence or absence of this marker with nominal constituents encodes whether an object is alienably or inalienably possessed. Teotepec Chatino has a vigesimal number system - a common areal feature of other languages in the region. There is a complex set of motion verbs that encode spatial orientation and reference. There are several constructions that result in complex sentences. These include relative clauses, complement clauses, adverbial clauses and conjunctions. There are a number of interesting temporal adverbs that are used to define different time events. The description and analysis of these aspects of Teotepec Chatino is based on data gathered through elicitation and oral texts. This work is a preliminary sketch of the language and should not be considered exhaustive. / text

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