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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.
21

Interação genótipos x locais em cana-de-açúcar e perspectivas de estratificação ambiental / Genotypes by locations interaction in sugarcane and perspectives of environmental stratification

Santos, Éder Gustavo Dias dos 28 August 2008 (has links)
Este estudo foi realizado com base nos resultados experimentais relativos a genótipos RB da Série 92 do Programa de Melhoramento Genético da Cana-de-Açúcar da Universidade Federal de São Carlos (PMGCA UFSCar), tendo como finalidade avaliar a representatividade dos locais que compõe sua rede experimental. Para isso foram avaliados os caracteres Toneladas de colmo por hectare (TCH), Pol % da cana (PC) e Toneladas de Pol por hectare (TPH) de 15 genótipos em 13 locais, sendo estes locais referentes às Usinas : Santa Fé, Santa Luiza, Santa Terezinha, São Martinho, Cocal, Bonfim, Santa Elisa - 1, Cruz Alta, Iturama, Aralco, Lucélia, Sonora e Santa Elisa - 2. A partir das análises de variância individuais e conjuntas, foram realizados testes de agrupamento baseado na metodologia de Lin, que se baseia no quadrado da distancia euclidiana para agrupar locais que apresentem similaridade nas respostas dos genótipos; entretanto, com dois critérios de significâncias para a interação genótipos x locais, tais como: p 0,05 (original) e p 0,30 (modificada), para os três caracteres avaliados. A metodologia de Lin original (p 0,05) mostrou ser pouco confiável, podendo possibilitar o agrupamento de locais com valores de quadrados médios da interação genótipos x locais muito próximos da significância. Já a metodologia de Lin modificada mostrou ser mais confiável, apresentando, portanto, menos possibilidades de agrupamento. Assim, por meio da metodologia de Lin (1982) modificada, pode-se notar que se forem considerados os três caracteres simultaneamente (TCH, PC e TPH), apenas os locais referentes às Usinas Santa fé e Cruz Alta poderiam se juntar para formar um grupo, o que possibilitaria a redução de 13 locais para 12 locais. Isso mostra que os locais de experimentação da UFSCar são bem representativos das regiões estudadas. / This study was performed on the basis of experimental results concerning RB genotypes belonging to Series 92 of the sugarcane breeding program of the Universidade Federal de São Carlos (PMGCA - UFSCar), having as purpose to evaluate representativeness of the locations that compose its experimental net. This way, the characters tons of cane per hectare (TCH), Pol % sugar (PC) and Tons of Pol per hectare (TPH) of 15 RB genotypes cultivated in 13 locations, were evaluated. These locations belongs to the following Sugar factories: Santa Fé, Santa Luíza, Santa Terezinha, São Martinho, Cocal, Bonfim, Santa Elisa - 1, Cruz Alta, Iturama, Aralco, Lucélia, Sonora and Santa Elisa - 2. From the individual and joint analyses of variance, tests of grouping based on the methodology of Lin which is based on the Square of Euclidean distance for grouping locations that present similarity in behavior of the genotypes were carried out; however, with two significance criteria of the genotypes by locations interaction, such as: p 0,05 (original) and p 0,30 (modified), for those three parameters evaluated. The original Lin (p0,05) methodology was shown not to be very precise allowing grouping locations that presented average mean squares values of the interaction genotypes by locations very close to the significance. On the other hand, the modified Lin methodology (p 0,30) showed to be more precise, presenting, therefore, less possibilities of grouping. Thus, by using the modified Lin methodology (1982), it can be noticed that if the three characters (TCH, PC and TPH) are simultaneously considered , only the locations related to Santa Fé and Cruz Alta Sugar factories could be joined to form a group, and that would make possible the reduction from 13 to 12 experimental locations. This result show that the locations of experimentation of the UFSCar breeding program are well representative of the studied regions.
22

A FAULT LOCATION ALGORITHM FOR UNBALANCED DISTRIBUTION SYSTEM WITHOUT FAULT TYPE INFORMATION

Li, Yizhe 01 January 2018 (has links)
Power system faults normally result in system damage, profit loss and consumer dissatisfaction. Consequently, there is a strong demand on precise and fast fault location estimation for power system to minimize the system restoration time. This paper examines a method to locate short-circuit faults on a distribution system with unbalanced loads without fault type information. Bus impedance matrix technique was harnessed in the fault location estimation algorithm. The system data including line impedances, source impedance and distribution system layout was assumed to be known factors, hence pre-fault bus impedance can be calculated and implemented into the algorithm. Corresponding methods to derive system matrix information were discussed. Case studies were performed to evaluate the accuracy of the fault location algorithm and illustrate the robust performance under measurements errors influences, load variation impacts and load compensation implementations. Traditional fault location methods involve current and voltage measurements mandatorily locating at each ends of faulted section to locate the fault. The method examined finds fault location for distribution system utilizing impedance matrix accompanied with sparse measurements in the power network. This method fully considers the unbalance of distribution system.
23

A guide for IT companies in Sweden: How to succeed in the offshoring business

Bryborn, Sofia, Jantell, Marcus January 2005 (has links)
<p>This thesis focuses on how companies in Sweden should manage the processes of offshore outsourcing IT services to low-cost locations, but also how they should manage the planning and accomplishment to achieve their goals and the expected result in a good way. The thesis states that companies in Sweden need to put a lot of effort into planning and research considering potential location and vendor. Different aspects and phases of the offshoring processes will be stated, discussed and analyzed concerning a fictive</p><p>company called AbcIT. A visualization of internal strengths and weaknesses as well as external opportunities and threats is presented by a SWOT analysis regarding offshore outsourcing of IT-services to India.</p> / <p>Denna uppsats fokuserar på hur företag i Sverige skall gå tillväga när de överväger offshore outsourcing av IT-tjänster till lågkostnadsländer, hur de ska genomföra planeringsarbete och genomförande för att på bästa sätt uppnå både mål och resultat. I uppsatsen konstateras att företag i Sverige behöver lägga stor vikt vid planering och förundersökning av framtida område och affärspartner. Olika faktorer och delar av offshoringprocessen tas upp, diskuteras och analyseras med hjälp av det fiktiva företaget AbcIT. En SWOT-analys visualiserar interna styrkor och svagheter samt externa möjligheter och hot vid offshore outsourcing av IT-tjänster till Indien.</p>
24

Architecting the spatial enablement of a film location database for enhanced geographic analysis and query

Dickinson, Matthew G. Musser, Dale Roy, January 2009 (has links)
The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on March 19, 2010). Thesis advisor: Dr. Dale R. Musser. Includes bibliographical references.
25

Crossing locations, light conditions, and pedestrian injury severity

Siddiqui, Naved Alam 01 June 2006 (has links)
This study assesses the role of crossing locations and light conditions in pedestrian injury severity through a multivariate regression analysis to control for many other factors that also may influence pedestrian injury severity. Crossing locations include midblock and intersections, and light conditions include daylight, dark with street lighting, and dark without street lighting. The study formulates a theoretical framework on the determinants of pedestrian injury severity, and specifies an empirical model accordingly. An ordered probit model is then applied to the KABCO severity scale of pedestrian injuries which occurred while attempting street crossing in the years 1986 to 2003 in Florida. In terms of crossing locations, the probability of a pedestrian dying when struck by a vehicle, is higher at midblock locations than at intersections for any light condition. In fact, the odds of sustaining a fatal injury is 49 percent lower at intersections than at midblock locations under daylight conditions, 24 percent lower under dark with street lighting conditions, and 5 percent lower under dark without street lighting conditions. Relative to dark conditions without street lighting, daylight reduces the odds of a fatal injury by 75 percent at midblock locations and by 83 percent at intersections, while street lighting reduces the odds by 42 percent at midblock locations and by 54 percent at intersections.
26

Touring the screen : New Zealand film geographies and the textual tourist /

Leotta, Alfio. January 2009 (has links)
Thesis (PhD--Film, Television and Media Studies)--University of Auckland, 2009. / "A thesis submitted in fulfilment of the requirements for the degree of Dotor of Philosophy in Film, Television and media Studeis, the University of Auckland, 2009." Includes bibliographical references.
27

Interação genótipos x locais em cana-de-açúcar e perspectivas de estratificação ambiental / Genotypes by locations interaction in sugarcane and perspectives of environmental stratification

Éder Gustavo Dias dos Santos 28 August 2008 (has links)
Este estudo foi realizado com base nos resultados experimentais relativos a genótipos RB da Série 92 do Programa de Melhoramento Genético da Cana-de-Açúcar da Universidade Federal de São Carlos (PMGCA UFSCar), tendo como finalidade avaliar a representatividade dos locais que compõe sua rede experimental. Para isso foram avaliados os caracteres Toneladas de colmo por hectare (TCH), Pol % da cana (PC) e Toneladas de Pol por hectare (TPH) de 15 genótipos em 13 locais, sendo estes locais referentes às Usinas : Santa Fé, Santa Luiza, Santa Terezinha, São Martinho, Cocal, Bonfim, Santa Elisa - 1, Cruz Alta, Iturama, Aralco, Lucélia, Sonora e Santa Elisa - 2. A partir das análises de variância individuais e conjuntas, foram realizados testes de agrupamento baseado na metodologia de Lin, que se baseia no quadrado da distancia euclidiana para agrupar locais que apresentem similaridade nas respostas dos genótipos; entretanto, com dois critérios de significâncias para a interação genótipos x locais, tais como: p 0,05 (original) e p 0,30 (modificada), para os três caracteres avaliados. A metodologia de Lin original (p 0,05) mostrou ser pouco confiável, podendo possibilitar o agrupamento de locais com valores de quadrados médios da interação genótipos x locais muito próximos da significância. Já a metodologia de Lin modificada mostrou ser mais confiável, apresentando, portanto, menos possibilidades de agrupamento. Assim, por meio da metodologia de Lin (1982) modificada, pode-se notar que se forem considerados os três caracteres simultaneamente (TCH, PC e TPH), apenas os locais referentes às Usinas Santa fé e Cruz Alta poderiam se juntar para formar um grupo, o que possibilitaria a redução de 13 locais para 12 locais. Isso mostra que os locais de experimentação da UFSCar são bem representativos das regiões estudadas. / This study was performed on the basis of experimental results concerning RB genotypes belonging to Series 92 of the sugarcane breeding program of the Universidade Federal de São Carlos (PMGCA - UFSCar), having as purpose to evaluate representativeness of the locations that compose its experimental net. This way, the characters tons of cane per hectare (TCH), Pol % sugar (PC) and Tons of Pol per hectare (TPH) of 15 RB genotypes cultivated in 13 locations, were evaluated. These locations belongs to the following Sugar factories: Santa Fé, Santa Luíza, Santa Terezinha, São Martinho, Cocal, Bonfim, Santa Elisa - 1, Cruz Alta, Iturama, Aralco, Lucélia, Sonora and Santa Elisa - 2. From the individual and joint analyses of variance, tests of grouping based on the methodology of Lin which is based on the Square of Euclidean distance for grouping locations that present similarity in behavior of the genotypes were carried out; however, with two significance criteria of the genotypes by locations interaction, such as: p 0,05 (original) and p 0,30 (modified), for those three parameters evaluated. The original Lin (p0,05) methodology was shown not to be very precise allowing grouping locations that presented average mean squares values of the interaction genotypes by locations very close to the significance. On the other hand, the modified Lin methodology (p 0,30) showed to be more precise, presenting, therefore, less possibilities of grouping. Thus, by using the modified Lin methodology (1982), it can be noticed that if the three characters (TCH, PC and TPH) are simultaneously considered , only the locations related to Santa Fé and Cruz Alta Sugar factories could be joined to form a group, and that would make possible the reduction from 13 to 12 experimental locations. This result show that the locations of experimentation of the UFSCar breeding program are well representative of the studied regions.
28

A guide for IT companies in Sweden: How to succeed in the offshoring business

Bryborn, Sofia, Jantell, Marcus January 2005 (has links)
This thesis focuses on how companies in Sweden should manage the processes of offshore outsourcing IT services to low-cost locations, but also how they should manage the planning and accomplishment to achieve their goals and the expected result in a good way. The thesis states that companies in Sweden need to put a lot of effort into planning and research considering potential location and vendor. Different aspects and phases of the offshoring processes will be stated, discussed and analyzed concerning a fictive company called AbcIT. A visualization of internal strengths and weaknesses as well as external opportunities and threats is presented by a SWOT analysis regarding offshore outsourcing of IT-services to India. / Denna uppsats fokuserar på hur företag i Sverige skall gå tillväga när de överväger offshore outsourcing av IT-tjänster till lågkostnadsländer, hur de ska genomföra planeringsarbete och genomförande för att på bästa sätt uppnå både mål och resultat. I uppsatsen konstateras att företag i Sverige behöver lägga stor vikt vid planering och förundersökning av framtida område och affärspartner. Olika faktorer och delar av offshoringprocessen tas upp, diskuteras och analyseras med hjälp av det fiktiva företaget AbcIT. En SWOT-analys visualiserar interna styrkor och svagheter samt externa möjligheter och hot vid offshore outsourcing av IT-tjänster till Indien.
29

Development of Safety Performance Functions for SafetyAnalyst Applications in Florida

Lu, Jinyan 26 March 2013 (has links)
In 2010, the American Association of State Highway and Transportation Officials (AASHTO) released a safety analysis software system known as SafetyAnalyst. SafetyAnalyst implements the empirical Bayes (EB) method, which requires the use of Safety Performance Functions (SPFs). The system is equipped with a set of national default SPFs, and the software calibrates the default SPFs to represent the agency’s safety performance. However, it is recommended that agencies generate agency-specific SPFs whenever possible. Many investigators support the view that the agency-specific SPFs represent the agency data better than the national default SPFs calibrated to agency data. Furthermore, it is believed that the crash trends in Florida are different from the states whose data were used to develop the national default SPFs. In this dissertation, Florida-specific SPFs were developed using the 2008 Roadway Characteristics Inventory (RCI) data and crash and traffic data from 2007-2010 for both total and fatal and injury (FI) crashes. The data were randomly divided into two sets, one for calibration (70% of the data) and another for validation (30% of the data). The negative binomial (NB) model was used to develop the Florida-specific SPFs for each of the subtypes of roadway segments, intersections and ramps, using the calibration data. Statistical goodness-of-fit tests were performed on the calibrated models, which were then validated using the validation data set. The results were compared in order to assess the transferability of the Florida-specific SPF models. The default SafetyAnalyst SPFs were calibrated to Florida data by adjusting the national default SPFs with local calibration factors. The performance of the Florida-specific SPFs and SafetyAnalyst default SPFs calibrated to Florida data were then compared using a number of methods, including visual plots and statistical goodness-of-fit tests. The plots of SPFs against the observed crash data were used to compare the prediction performance of the two models. Three goodness-of-fit tests, represented by the mean absolute deviance (MAD), the mean square prediction error (MSPE), and Freeman-Tukey R2 (R2FT), were also used for comparison in order to identify the better-fitting model. The results showed that Florida-specific SPFs yielded better prediction performance than the national default SPFs calibrated to Florida data. The performance of Florida-specific SPFs was further compared with that of the full SPFs, which include both traffic and geometric variables, in two major applications of SPFs, i.e., crash prediction and identification of high crash locations. The results showed that both SPF models yielded very similar performance in both applications. These empirical results support the use of the flow-only SPF models adopted in SafetyAnalyst, which require much less effort to develop compared to full SPFs.
30

Analýza kritických míst v silniční dopravě ve vybraném regionu - Vyškovsko / Analysis of Critical Locations for Road Transport in a Chosen Region - Vyškovsko

Brtníková, Michaela January 2011 (has links)
This master thesis analyzes the bottlenecks on the terrestrial communications in the area Vyškovsko. The aim is to suggest organizational and engineering measures which lead to increase traffic safety in selected road sections of terrestrial communications.

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