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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.
231

Sustainability of private sector in solid waste collection: a case of Dar es Salaam, Tanzania

Kassim, Salha M. January 2006 (has links)
This research examines the sustainability of private sector participation in urban service delivery in developing countries. The solid waste collection service in Dar es Salaam – Tanzania was used as a case study. Municipalities in Tanzania have not been able to cope with the rapid generation rate of solid waste coupled by the rapid urbanization. This resulted in a relatively large quantity of solid waste remaining poorly managed and uncollected, which left an obvious gap for other stakeholders to participate in service provision. The private sector took the opportunity, in the early 1960s, to fill the gap left by the public sector in service provision. The research found that there are factors affecting the sustainability of the private sector, which include: support from the public sector; capacity from the private sector in terms of collection vehicles and equipment; households’ attitudes and behaviour regarding the privatization of the service; the awareness and participation of households in the service; and involvement of households in decision-making. The research also identified that there is a missing-link between the households, public sector administration and the private sector. The research concludes that, taking into consideration the above factors, the proposed guidelines formulated in this study illustrate ways in which private sector involvement in solid waste collection in urban developing countries will be sustainable.
232

The MMPI-2 K scale studies of its structure and utility as a suppressor variable /

Herfkens, Kristine Marie. January 1993 (has links)
Thesis (Ph.D.)--University of Tulsa, 1993. / Includes bibliographical references (leaves 86-92).
233

The MMPI-2 K scale studies of its structure and utility as a suppressor variable /

Herfkens, Kristine Marie. January 1993 (has links)
Thesis (Ph.D.)--University of Tulsa, 1993. / Includes bibliographical references (leaves 86-92).
234

Contribui??es para estrat?gia de controle aplicada ? gera??o fotovoltaica interconectada ? rede el?trica

Rocha, Thiago de Oliveira Alves 09 December 2015 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-06-10T00:04:44Z No. of bitstreams: 1 ThiagoDeOliveiraAlvesRocha_TESE.pdf: 3728978 bytes, checksum: e47856c08795ec056c30763c0e338dad (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-06-10T23:32:23Z (GMT) No. of bitstreams: 1 ThiagoDeOliveiraAlvesRocha_TESE.pdf: 3728978 bytes, checksum: e47856c08795ec056c30763c0e338dad (MD5) / Made available in DSpace on 2016-06-10T23:32:23Z (GMT). No. of bitstreams: 1 ThiagoDeOliveiraAlvesRocha_TESE.pdf: 3728978 bytes, checksum: e47856c08795ec056c30763c0e338dad (MD5) Previous issue date: 2015-12-09 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Os sistemas de gera??o, que utilizam fontes renov?veis, est?o se tornando cada vez mais populares devido ? necessidade do incremento do uso da energia el?trica. Atualmente, as fontes renov?veis cooperam com a gera??o convencional, em decorr?ncia da limita??o do sistema na entrega da pot?ncia requerida, da necessidade da redu??o dos efeitos indesejados das fontes que utilizam combust?veis fosseis (polui??o) e a dificuldade de constru??o de novas linhas de transmiss?o e/ou distribui??o. Esta coopera??o se d? por meio da gera??o distribu?da. Desta forma, neste trabalho s?o propostas contribui??es para o sistema de controle utilizado para a interconex?o de sistemas PV (do ingl?s, Photovoltaic) de gera??o distribu?da com a rede el?trica trif?sica, por meio de filtros de conex?o do tipo LCL. A compensa??o da qualidade de energia no ponto de acoplamento comum (PAC) ? realizada garantindo-se que a rede el?trica forne?a, ou consuma apenas pot?ncia ativa e que suas correntes possuam baixo teor harm?nico. Diferentemente das t?cnicas tradicionais, que necessitam de esquemas para a detec??o harm?nica, a t?cnica utilizada realiza a compensa??o harm?nica sem a utiliza??o desses esquemas, controlando as correntes de sa?da do sistema de uma forma indireta. Para que haja um efetivo controle da tens?o do barramento CC (Corrente Cont?nua) ? utilizado o controlador robusto em modo dual DSM-PI (Proporcional Integral Dual em Modo Deslizante), que durante o transit?rio se comporta como um controlador em modo deslizante SM-PI (Proporcional Integral em Modo Deslizante), e em regime permanente se comporta como um PI (Proporcional Integral) convencional. Para o controle das correntes ? utilizado a estrat?gia de controle repetitivo, onde s?o utilizados controladores de dupla sequ?ncia (DSC) sintonizados na componente fundamental, no quinto e no s?timo harm?nico. As correntes de refer?ncia s?o alinhadas ao ?ngulo de fase do vetor tens?o da rede el?trica, obtido a partir do uso de um SRF-PLL (do ingl?s, Synchronous Reference Frame Phase-Locked-Loop). Com o intuito de obter a m?xima pot?ncia do array fotovoltaico ? utilizado um algoritmo de MPPT (do ingl?s, Maximum Power Point Tracking) sem a necessidade de adi??o de sensores. Resultados experimentais s?o apresentados para demonstrar a efic?cia do sistema de controle proposto. / Generation systems, using renewable sources, are becoming increasingly popular due to the need for increased use of electricity. Currently, renewables sources have a role to cooperate with conventional generation, due to the system limitation in delivering the required power, the need for reduction of unwanted effects from sources that use fossil fuels (pollution) and the difficulty of building new transmission and/or distribution lines. This cooperation takes place through distributed generation. Therefore, this work proposes a control strategy for the interconnection of a PV (Photovoltaic) system generation distributed with a three-phase power grid through a connection filter the type LCL. The compensation of power quality at point of common coupling (PCC) is performed ensuring that the mains supply or consume only active power and that his currents have low distorcion. Unlike traditional techniques which require schemes for harmonic detection, the technique performs the harmonic compensation without the use of this schemes, controlling the output currents of the system in an indirect way. So that there is effective control of the DC (Direct Current) bus voltage is used the robust controller mode dual DSMPI (Dual-Sliding Mode-Proportional Integral), that behaves as a sliding mode controller SM-PI (Sliding Mode-Proportional Integral) during the transition and like a conventional PI (Proportional Integral) in the steady-state. For control of current is used to repetitive control strategy, which are used double sequence controllers (DSC) tuned to the fundamental component, the fifth and seventh harmonic. The output phase current are aligned with the phase angle of the utility voltage vector obtained from the use of a SRF-PLL (Synchronous Reference Frame Phase-Locked-Loop). In order to obtain the maximum power from the PV array is used a MPPT (Maximum Power Point Tracking) algorithm without the need for adding sensors. Experimental results are presented to demonstrate the effectiveness of the proposed control system.
235

Directory scalability in multi-agent based systems

Hussain, Shahid, Shabbir, Hassan January 2008 (has links)
Simulation is one approach to analyze and model the real world complex problems. Multi-agent based systems provide a platform to develop simulations based on the concept of agent-oriented programming. In multi-agent systems, the local interaction between agents contributes to the emergence of the global phenomena by getting the result of the simulation runs. In MABS systems, interaction is one common aspect for all agents to perform their tasks. To interact with each other the agents require yellow page services from the platform to search for other agents. As more and more agents perform searches on this yellow page directory, there is a decrease in the performance due to a central bottleneck. In this thesis, we have investigated multiple solutions for this problem. The most promising solution is to integrate distributed shared memory with the directory systems. With our proposed solution, empirical analysis shows a statistically significant increase in performance of the directory service. We expect this result to make a considerable contribution to the state of the art in multiagent platforms.
236

Psychiatric Diagnosis: Rater Reliability and Prediction Using Psychological Rating Scale for Diagnostic Classification

McDowell, DeLena Jean 08 1900 (has links)
This study was designed to assess the reliability of the "Psychological Rating Scale for Diagnostic classification as an instrument for determining diagnoses consistent with DSM-III criteria and nomenclature. Pairs of raters jointly interviewed a total of 50 hospital patients and then independently completed the 70-item rating scale to arrive at Axis I and Axis II diagnoses which were subsequently correlated with diagnoses obtained by standard psychometric methods, interrater agreement was 88 per cent for Axis I and 62 per cent for Axis II, with correlations of .94 and .79 respectively.
237

Mental Health Problems in Parole Decisions: The Re-conceptualization of Mental Health Problems as Risk Factors

Stewart, Shannon Marie January 2016 (has links)
Deinstitutionalization has had an impact increasing the number of offenders with mental health problems within the correctional system. Furthermore, preliminary research claims that offenders with mental health problems are disproportionately denied when applying for parole. The reasons for this are not well understood. This exploratory qualitative research draws on 48 decisions from the Parole Board of Canada decision registry, four interviews with former parole board members, and observation data from 17 parole hearings to explore how mental health problems are constructed within the conditional release decision-making process. Against a risk logic back drop, this institutional ethnography analyzes the way parole board members understand and operationalize mental health within the decision-making process. Self-regulation, medication compliance, and the role of the expert were strong themes that emerged through a content analysis. By integrating symbolic interactionism and a governmentality framework, the current study explores how mental health in parole decision-making is influenced by individual, organizational, and macro-level risk rationalities that draw on neoliberal responsibilization strategies and "psy" expertise. The findings are presented within Hawkin’s (2002) legal decision-making framework. Policy and human rights implications are discussed.
238

ANÁLISIS DE INCERTIDUMBRE Y ANÁLISIS DE SENSIBILIDAD GLOBAL EN LA DURACIÓN DE PROYECTOS USANDO LA MATRIZ DE ESTRUCTURA DEPENDIENTE

Gálvez Ahumada, Edelmira Delfina 14 December 2015 (has links)
[EN] Scheduling is of critical importance to project management. Traditional project scheduling methods, such as PERT and CPM do not treat interdependence of activities; thus, the dependency structure matrix (DSM) has become a common tool for programming activities in recent years. The DSM has been useful for the analysis of systems with dependence among its components. In the context of scheduling, the DSM can be used to program activities, hence determining the project duration with and without communication times, as well as with and without overlapping of activities. However, the variables representing the DSM have usually been considered as deterministic, a situation that is not consistent with reality, thus limiting the effectiveness of the DSM. All input variables have uncertainties that are essential to the analysis the scheduling using the DSM. This thesis applies uncertainty analysis and global sensitivity analysis (GSA) to DSM-based scheduling. Specifically, the following objectives are explored: a) conduct uncertainty analysis using mathematical intervals (gray theory); b) perform uncertainty analysis using Monte Carlo simulation; c) apply GSA to identify significant variables in project scheduling; d) compare the various methods of GSA for identifying significant activities project scheduling; e) develop a methodology to identify activities and variables that are critical or influential in achieving a desired duration of the project. A conventional sensitivity analysis was conducted. The GSA was performed using scatter plots, partial correlation coefficients, rank partial correlation coefficients, standardized regression coefficients, rank standardized regression coefficients, Morris method, Sobol' method, and Monte Carlo Filtering method. In conclusion, uncertainty and sensitivity analysis should be an integral part of the DSM -based scheduling. This extension provides valuable information for project management that can improve the implementation of projects. From sensitivity analysis in particular, it has been found that the characterization of uncertainty of input variables is a key component in the sensitivity analysis of project duration. With regard to GSA standardized regression coefficients, Morris and Sobol' methods are best suited for GSA. Monte Carlo Filtering provides further assistance in identifying the critical variables. Restricting these critical variables can be used to compress the project duration. / [ES] La programación de actividades es una acción fundamental en la dirección y gestión de proyectos. Considerando que las técnicas tradicionales de planificación y programación de proyectos, PERT y CPM, no tratan bien la interdependencia de actividades, en los últimos años se ha incorporado la matriz de estructura dependiente (MED) como una herramienta para programar actividades. La MED ha mostrado ser una herramienta eficaz para el análisis de sistemas que presentan dependencia entre sus componentes. Su incorporación a la programación de actividades permite determinar la duración de proyectos sin y con tiempos de comunicación, sin y con solape de actividades. Sin embargo, las variables que representan la MED han sido consideradas como determinísticas, situación que no coincide con la realidad, y por lo tanto limitan su aplicación práctica. Todas las variables de entrada presentan incertidumbre que deben ser consideradas para analizar la programación de actividades usando la MED. Esta tesis busca reducir esa brecha de conocimiento estudiando el efecto de la incertidumbre en la programación de actividades basado en la MED realizando análisis de incertidumbre y análisis de sensibilidad global (ASG). Específicamente se plantean los siguientes objetivos: a) realizar análisis de incertidumbre usando matemática de intervalos (teoría gris); b) realizar análisis de incertidumbre usando simulación de Monte Carlo; c) aplicar ASG para identificar actividades y variables significativas en la programación de actividades; d) comparar los diferentes métodos de ASG como métodos para identificar actividades y variables significativas en la programación de actividades; y e) desarrollar una metodología que permita identificar las actividades y variables críticas o influyentes en lograr una duración de proyecto deseada. El análisis de sensibilidad fue realizado siguiendo los pasos convencionales de éste tipo de estudio. El ASG se realizó utilizando diagramas de dispersión, coeficientes de correlación parcial, coeficientes de correlación por rangos parciales, coeficientes de regresión estandarizados, coeficientes de regresión por rango estandarizados, método de Morris, método de Sobol' y método de Monte Carlo Filtering. La principal conclusión es: el análisis de incertidumbre y el análisis de sensibilidad deben ser parte integral de la programación de actividades usando la MED, estas técnicas suministran información valiosa para la dirección y gestión de proyectos que puede ser utilizada junto a otras informaciones para mejorar la ejecución de los proyectos. En particular en el análisis de sensibilidad es posible destacar que la caracterización de la incertidumbre de las variables de entrada es un componente clave en el análisis de sensibilidad en la duración del proyecto. En relación al ASG podemos destacar que los métodos de coeficientes de regresión estandarizados, método de Morris y el método de Sobol' son los más adecuados para realizar ASG. Además, la aplicación de Monte Carlo Filtering facilita la identificación de las variables críticas y su regionalización consigue comprimir la duración del proyecto. / [CAT] La programació d'activitats és una acció fonamental en la direcció i gestió de projectes. Considerant que les tècniques tradicionals de planificació i programació de projectes, PERT i CPM, no tracten bé la interdependència d'activitats, en els darrers anys s'ha incorporat la matriu d'estructura dependent (MED) com una eina per programar activitats. La MED ha mostrat ser una eina eficaç per a l'anàlisi de sistemes que presenten dependència entre els seus components. La seva incorporació a la programació d'activitats permet determinar la durada de projectes sense i amb temps de comunicació, sense i amb solapament d'activitats. No obstant això, les variables que representen la MED han estat considerades com determinístiques, situació que no coincideix amb la realitat, i per tant limiten la seva aplicació pràctica. Totes les variables d'entrada presenten incertesa que han de ser considerades per analitzar la programació d'activitats usant la MED. Aquesta tesi busca reduir aquesta bretxa de coneixement estudiant l'efecte de la incertesa en la programació d'activitats basat en la MED realitzant anàlisis d'incertesa i anàlisi de sensibilitat global (ASG). Específicament es plantegen els següents objectius: a) realitzar anàlisis d'incertesa utilitzant matemàtica d'intervals (teoria gris); b) realitzar anàlisis d'incertesa utilitzant simulació de Monte Carlo; c) aplicar ASG per identificar activitats i variables significatives en la programació d'activitats; d) comparar els diferents mètodes d'ASG com a mètodes per identificar activitats i variables significatives en la programació d'activitats; i e) desenvolupar una metodologia que permet identificar les activitats i variables crítiques o influents en aconseguir una durada de projecte desitjada. L'anàlisi de sensibilitat va ser realitzat seguint els passos convencionals d'aquest tipus d'estudi. L'ASG es va realitzar utilitzant diagrames de dispersió, coeficients de correlació parcial, coeficients de correlació per rangs parcials, coeficients de regressió estandarditzats, coeficients de regressió per rang estandarditzats, mètode de Morris, mètode de Sobol' i mètode de Monte Carlo Filtering. La principal conclusió és l'anàlisi d'incertesa i l'anàlisi de sensibilitat han de ser part integral de la programació d'activitats utilitzant la MED, aquestes tècniques subministren informació valuosa per a la direcció i gestió de projectes que pot ser utilitzada al costat d'altres informacions per a millorar la execució dels projectes. En particular en l'anàlisi de sensibilitat és possible destacar que la caracterització de la incertesa de les variables d'entrada és un component clau en l'anàlisi de sensibilitat en la durada del projecte. En relació a l'ASG podem destacar que els mètodes de coeficients de regressió estandarditzats, mètode de Morris i el mètode de Sobol' són els més adequats per a realitzar anàlisis de sensibilitat global. A més, l'aplicació de Montecarlo Filtering facilita la identificació de les variables crítiques i la seva regionalització aconsegueix comprimir la durada del projecte incloent. / Gálvez Ahumada, ED. (2015). ANÁLISIS DE INCERTIDUMBRE Y ANÁLISIS DE SENSIBILIDAD GLOBAL EN LA DURACIÓN DE PROYECTOS USANDO LA MATRIZ DE ESTRUCTURA DEPENDIENTE [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/58777 / TESIS
239

En kluven gestaltning av en delad karaktär : Skildring av dissociativ identitetsstörning i filmen Split (2016)

Götesson, Hanna January 2020 (has links)
Avsikten med denna uppsats är att undersöka hur dissociativ identitetsstörning (DID)gestaltas i filmen Split. Stereotyper och missuppfattningar har representerats länge i filmom psykiatriska sjukdomar och Split har blivit kritiserad för sin gestaltning avsyndromet, dock ser verkligheten med diagnosen olika ut. Analysen utforskar filmengenom de fyra DSM-IV kriterierna för DID. Scener analyseras med hjälp av Jens Ederskaraktärsklocka och representation av personer med DID som de andra, vilket innebärpersoner med psykiatriska sjukdomar ofta blir alienerade i film, och vi tillsammans, somfokuserar på hur de humaniseras och inkluderas samt stimulerar publikens medkänsla.Dessa metoder har använts för att komma fram till att filmen förhåller sig till DSM-IVkriterierna men att självaste gestaltningen av DID-karaktären är problematisk.Komplexa symptom i syndromet diskuteras i filmen men i slutändan framställs personermed DID som en fara för sig själva och andra, vilket kan bidra till att skada derassjälvbild
240

Psychometric Development of the Autism Trait Survey

Barnhart, Gwendolyn S. 18 May 2021 (has links)
No description available.

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