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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.
101

Socialização da informação: intersecções temáticas entre ciência da informação e educação

Silva, Márcio Felipe Albuquerque Prazim da 11 February 2014 (has links)
Made available in DSpace on 2015-04-16T15:23:37Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 726804 bytes, checksum: 68baf93b70b0372b26150cecfc7df974 (MD5) Previous issue date: 2014-02-11 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / Analyzes the field interface between Information Science (SI) and Education relating the information socialization to the Paulo Freire scontributions, mainly from procedures specified in Pedagogy of the Oppressed, which can guide the formation of communicative context. At the end, encourages conceptual map is based on the discussion of information socialization. This is theoretical research in interthematic part, and also focuses on interdisciplinary relationships between fields of knowledge. Regarding the objectives, initiallyis defined as exploratory research and, after, as a descriptive, qualitative approach. SI believes that education and built a fruitful interface, which motivates a deeper reflection on the contributions that emerged at the heart of this dialogic space of contemporary society, in the study, understood as learningsociety or learning network society. The information socialization comprises studies of SI and can relate to the field of Education through Paulo Freire s theoretical and procedural guidance, since the formation of the communicative context to creating informational products. / Analisa o campo de interface entre a Ciência da Informação (CI) e a Educação, relacionando a socialização da informação às contribuições de Paulo Freire, principalmente, a partir de procedimentos explicitados na Pedagogia do Oprimido, com base na investigação de temas geradores, que pode nortear a formação de contexto comunicativo. Ao final, fomenta-semapa conceitual fundamentado na discussão sobre socialização da informação. Trata-se de pesquisa teórico-conceitual, em parte intertemática, e que se centra também em relações interdisciplinares entre campos do conhecimento. No tocante aos objetivos, define-se, a priori, como pesquisa exploratória e, a posteriori, como descritiva, com abordagem qualitativa. Entende que a CI e a Educação construíram uma interface fecunda, o que motiva uma reflexão mais profunda acerca das contribuições surgidas no cerne desse espaço dialógico da sociedade contemporânea, no estudo, denominada de sociedade do aprendizado contínuoou do aprendizado em rede. A socialização da informação compreende estudos de CI e pode se relacionarao campo da Educação por meio de orientações teóricas e procedimentais de Paulo Freire, da formação de contexto comunicativo até a criação de produtos informacionais.
102

Efektivní správa serverové infrastruktury / Efective server infrastructure management

Váša, Lukáš January 2009 (has links)
The purpose of this diploma is to describe the IT server infrastructure and map out ways in which it may be find. In addition, aims to clarify the concept of management of infrastructure and describe the processes and activities required to manage server infrastructure. Subsequently, examine options and software features to support the management and benefits of their use. On the basis of these findings are developed and described models of effective managements for the particular states of server infrastructure. In detail are also explained the concepts, which can be achieved by changes in infrastructure. Models of effective management is established with regard to the need and level of implementation of various management activities, in different stages of maturity infrastructure. Some of the requirements arising from the level and condition of infrastructure must be support by the appropriate software. Models, therefore, also contain requirements for software at various levels of infrastructure maturity. Described and discussed are also other influences, which are the size of infrastructure, skills of managers and environmental influences. Part of this work is also a practical demonstration of software for managing server infrastructure, and a description of its properties.
103

Quality of Service and Predictability in DBMS

Sattler, Kai-Uwe, Lehner, Wolfgang 03 May 2022 (has links)
DBMS are a ubiquitous building block of the software stack in many complex applications. Middleware technologies, application servers and mapping approaches hide the core database technologies just like power, networking infrastructure and operating system services. Furthermore, many enterprise-critical applications demand a certain degree of quality of service (QoS) or guarantees, e.g. wrt. response time, transaction throughput, latency but also completeness or more generally quality of results. Examples of such applications are billing systems in telecommunication, where each telephone call has to be monitored and registered in a database, Ecommerce applications where orders have to be accepted even in times of heavy load and the waiting time of customers should not exceed a few seconds, ERP systems processing a large number of transactions in parallel, or systems for processing streaming or sensor data in realtime, e.g. in process automation of traffic control. As part of complex multilevel software stack, database systems have to share or contribute to these QoS requirements, which means that guarantees have to be given by the DBMS, too, and that the processing of database requests is predictable. Todays mainstream DBMS typically follow a best effort approach: requests are processed as fast as possible without any guarantees: the optimization goal of query optimizers and tuning approaches is rather to minimize resource consumption instead of just fulfilling given service level agreements. However, motivated by the situation described above there is an emerging need for database services providing guarantees or simply behave in a predictable manner and at the same time interact with other components of the software stack in order to fulfill the requirements. This is also driven by the paradigm of service-oriented architectures widely discussed in industry. Currently, this is addressed only by very specialized solutions. Nevertheless, database researchers have developed several techniques contributing to the goal of QoS-aware database systems. The purpose of the tutorial is to introduce database researchers and practitioners to the scope, the challenges and the available techniques to the problem of predictability and QoS agreements in DBMS.
104

Problematika hodnocení optimality a vyváženosti podnikových IS / Aspects of Optimality and Balance Evaluation of Corporate IS

Neuwirth, Bernard January 2009 (has links)
This doctoral thesis deals with the aspects of evaluation of balance and optimality of corporate information systems. The initiative for this specialization was given by the increasing importance that is being laid on the perception of information systems from the point of view of a business company. More and more resources are being invested in the domain of information systems, but afterwards, it is not always ascertained that the information system is such a system, one could characterize as balanced and optimal for the company today as well as in the future. Often this is because there does not exist for the company an available and easily applicable methodic how to evaluate the system. As one of the main starting points of this doctoral thesis I have chosen the methodic HOS8 that was published 5 years ago on our faculty. The newly proposed methodic HOS2009 is trying to clear up the weak points of the original HOS8 methodic that were discovered during its practical use. This is done mainly by using the information feedback from the applicants of the methodic. Within the scope of this thesis the factors influencing the level of the particular areas of the system and the influence of these areas on its general balance are being examined. With regard to the evaluation of the balance and optimality of the information system, in this thesis the problematic of determination of a balanced and optimal state of information system for a company nowadays as well in the future are being examined. As a part of the methods output the thesis presents also charts representing the general state of the system, the imbalance of the particular parts of the IS and the relationship between the areas of hardware and software. Based on the evaluation of the current state and its comparison to the balanced optimal state for the present day as well for the future, the new possible directions and strategies of further development of the IS in the company are being proposed. I see the best exploitation of the methodic HOS2009 in the company in the support of managerial decisions with impact on: the discovery of potentially problems within the scope of IS of the company, the design of a possible course of development useful for their solution, but also the usage of the methodic as a simple control mechanism.
105

The requirements for the development of a spatial information system for the Tlokwe Local Municipality water catchments area / Sydney Peter Riekert

Riekert January 2014 (has links)
The problem facing the Tlokwe Local Municipality is that it is Constitutional and legislatively obliged to avoid and/or mitigate the impact of potential disasters within its boundaries, through the effective management of potential disaster risks and disasters. The lack of effective risk management tools is especially concerning in the context of the water catchment management of the Mooi River, which is the main water supply of the Tlokwe local Municipality. The Mooi River is exposed to many potential catchment related hazards that could affect the municipality of which the origins are both anthropogenic and natural. Although, many of the impacts on the catchment arise beyond the boundaries and the control of the municipality, this does not relieve the municipality from the responsibility to develop tools to manage the risks. The aim of the study is to assist in addressing the above stated problem through establishing the requirements for a conceptual model for an effective spatial information system that will assist the municipality in effectively managing the potential disaster risks and disasters that may arise in the Mooi River Catchment area that could impact on the Tlokwe Local Municiaplity. The aim gives rise to three-research questions that are formulated as research objectives that are used to identify the conceptual model requirements. The first is to identify and conceptualise the constitutional and legislative obligations in respect of disaster risk management in general and specifically those governing the disaster disk management in the water catchment area for the Mooi River. The study of this objective not only highlight the constitutional and legal obligations that the local municipality is subject to, but provides legislatives remedies that the local municipality can utilise to assist with disaster risks reduction. The second is to identify and conceptualise the generic hazards that are related to water catchment areas (including the related groundwater compartments) and those specific in the Mooi River catchment area. In this section, potential anthropogenic and natural hazards are listed, a methodology for risk and vulnerability analyses is provided, and a concise study of quaternary catchment C23D is provided. The third is to identify and conceptualize the requirements for an effective conceptual model of GIS for Disaster Risk Management in the Tlokwe Local Municipality. An overview of a GIS is provided. The essential components of a generic information system namely, people, software, hardware, procedures and processes, data and telecommunications or networks are discussed. The information and system requirements cumulating from the analyses of the three research questions, serve as the drivers of the goal, outcomes and transformation process of the system as well as the requirements for the conceptual model. In this section: a comparison of the Systems Development Life Cycle (SDLC), Framework for Applied Systems Thinking (FAST), problem solving and the phases addressed in this study; the identification of the conceptual model requirements; and a concise systems conceptualisation of an effective GIS is provided. As the, mini-dissertation focuses on the needs for a conceptual model, the additional activities required before the system can be implemented are identified and formulated as recommendation that provide the opportunity for future research. / M Development and Management, North-West University, Potchefstroom Campus, 2014
106

The requirements for the development of a spatial information system for the Tlokwe Local Municipality water catchments area / Sydney Peter Riekert

Riekert January 2014 (has links)
The problem facing the Tlokwe Local Municipality is that it is Constitutional and legislatively obliged to avoid and/or mitigate the impact of potential disasters within its boundaries, through the effective management of potential disaster risks and disasters. The lack of effective risk management tools is especially concerning in the context of the water catchment management of the Mooi River, which is the main water supply of the Tlokwe local Municipality. The Mooi River is exposed to many potential catchment related hazards that could affect the municipality of which the origins are both anthropogenic and natural. Although, many of the impacts on the catchment arise beyond the boundaries and the control of the municipality, this does not relieve the municipality from the responsibility to develop tools to manage the risks. The aim of the study is to assist in addressing the above stated problem through establishing the requirements for a conceptual model for an effective spatial information system that will assist the municipality in effectively managing the potential disaster risks and disasters that may arise in the Mooi River Catchment area that could impact on the Tlokwe Local Municiaplity. The aim gives rise to three-research questions that are formulated as research objectives that are used to identify the conceptual model requirements. The first is to identify and conceptualise the constitutional and legislative obligations in respect of disaster risk management in general and specifically those governing the disaster disk management in the water catchment area for the Mooi River. The study of this objective not only highlight the constitutional and legal obligations that the local municipality is subject to, but provides legislatives remedies that the local municipality can utilise to assist with disaster risks reduction. The second is to identify and conceptualise the generic hazards that are related to water catchment areas (including the related groundwater compartments) and those specific in the Mooi River catchment area. In this section, potential anthropogenic and natural hazards are listed, a methodology for risk and vulnerability analyses is provided, and a concise study of quaternary catchment C23D is provided. The third is to identify and conceptualize the requirements for an effective conceptual model of GIS for Disaster Risk Management in the Tlokwe Local Municipality. An overview of a GIS is provided. The essential components of a generic information system namely, people, software, hardware, procedures and processes, data and telecommunications or networks are discussed. The information and system requirements cumulating from the analyses of the three research questions, serve as the drivers of the goal, outcomes and transformation process of the system as well as the requirements for the conceptual model. In this section: a comparison of the Systems Development Life Cycle (SDLC), Framework for Applied Systems Thinking (FAST), problem solving and the phases addressed in this study; the identification of the conceptual model requirements; and a concise systems conceptualisation of an effective GIS is provided. As the, mini-dissertation focuses on the needs for a conceptual model, the additional activities required before the system can be implemented are identified and formulated as recommendation that provide the opportunity for future research. / M Development and Management, North-West University, Potchefstroom Campus, 2014
107

Capacidade implanta????o-TI e vantagem competitiva: um estudo explorat??rio no Brasil

Sant???Anna Junior, Rubens 30 October 2015 (has links)
Submitted by Elba Lopes (elba.lopes@fecap.br) on 2016-05-04T20:57:57Z No. of bitstreams: 2 Rubens_Santanna_Junior.pdf: 651868 bytes, checksum: 37ccb1fbac0e554051327465270028f3 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Made available in DSpace on 2016-05-04T20:57:57Z (GMT). No. of bitstreams: 2 Rubens_Santanna_Junior.pdf: 651868 bytes, checksum: 37ccb1fbac0e554051327465270028f3 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2015-10-30 / We examine with an empirical study the hypothesis that the IT Deployment Capabilities impacts are positively associated with competitive advantage in Brazilian companies. The study uses the conceptual research model proposed by Tian et al. (2009). As part of this study, some of the main theoretical concepts of Resource Based View are reviewed, establishing a link between these concepts and the explanation about competitive advantage. The three constructs that set up the IT Deployment Capabilities are identified and investigated: Strategic Flexibility Partnership Business and Business Alignment. This is a descriptive exploratory research with a quantitative approach. The data collection instrument answered by the employees was a survey with a 7-point Likert scale available through Electronic Link on the Internet, using the website Survey Monkey. The study used public or private companies, national or international companies headquartered in Brazil as criteria for population, within various segments, and sample included the following functions: CEOs and Directors, Managers and Coordinators working at Information Technology areas in their companies. 320 e-mails were sent, yielding 192 responses. Of these 108 were selected as surveys with the desired research profile. To provide validation to the study, a statistical tool validation was used performing exploratory factor analysis tests (FAT) and multiple linear regression (MLR). The results showed that the constructs Strategic Flexibility and Business Partnership are positively associated with the perception of the impact of information technology competitive advantage, while the construct Business Alignment had no significant results to corroborate the studies by Tian et al. (2009) in Chinese companies. / O principal objetivo deste trabalho ?? examinar, com um estudo emp??rico, se os impactos da Capacidade Implanta????o-TI est??o positivamente associados ?? vantagem competitiva nas empresas brasileiras. O estudo utiliza o modelo conceitual de pesquisa proposto por Tian et al. (2009). Como partes deste estudo s??o revistos, dentre eles alguns dos principais conceitos te??ricos da Vis??o Baseada em Recursos, estabelece-se um elo entre esses conceitos e a explica????o da vantagem competitiva, identificando-se e investigando-se os tr??s constructos que comp??em a Capacidade Implanta????o-TI: Flexibilidade Estrat??gica, Parceria de Neg??cio e Alinhamento do Neg??cio. Trata-se de uma pesquisa explorat??ria descritiva, com uma abordagem quantitativa. O instrumento de coleta de dados empregado foi um Survey, utilizando-se a escala Likert com 7 pontos de Link eletr??nico, dispon??vel na Internet atrav??s do site Monkey Survey. O estudo utilizou como crit??rio de popula????o empresas nacionais ou internacionais sediadas no Brasil, de capital aberto ou fechado, e seus diversos segmentos, sendo que a amostra envolveu as fun????es de: CEOs, Diretores, Gerentes e Coordenadores que estavam ligados ?? ??rea de Tecnologia da Informa????o nas empresas onde colaboram. Foram enviados 320 e-mails, obtendo-se 192 respostas. Desse total, foram selecionadas 108 respostas com o perfil desejado da pesquisa. Para proporcionar garantia ao estudo, foi utilizado o instrumento estat??stico de valida????o, no qual foram realizados os testes de an??lise fatorial explorat??ria (AFE) e regress??es lineares m??ltiplas (RLM). Os resultados mostraram que os constructos Flexibilidade Estrat??gica e Parceria de Neg??cio est??o positivamente associados ?? percep????o dos impactos da Tecnologia da Informa????o na vantagem competitiva, enquanto o constructo Alinhamento do Neg??cio n??o apresentou resultados significativos, corroborando os estudos realizados por Tian et al. (2009) nas empresas chinesas.
108

Technology and meaning in natural resource management : the story-making role of GIS in the CLAMS project

Duncan, Sally 17 November 2004 (has links)
The working hypothesis for this study is that the introduction of GIS technology into the ancient procedures of map-making has changed the map-making context sufficiently to require a revision of the way we think about, learn from, and use maps, specifically in the public involvement process in natural resource management. The assumption that we jointly know what maps mean, and how to use them, has been carried unchallenged into the vastly changed arena of digital, information-dense, and highly technical map-making, courtesy of Geographic Information Systems (GIS). It has remained unchallenged even as the social context for environmental policy-making is undergoing historic upheaval. GIS fundamentally changes how information is viewed, literally, by many different groups, for its maps and databases contain varying levels of uncertainty, multiple embedded assumptions, potentially privileged knowledge, and considerable power as story-makers, along with unintended and unexplored social consequences. GIS maps/databases are used here as the central refractor of ideas about relationships between scientists and lay audiences; between the post-modern understanding of privilege and social change; and ultimately between technology and meaning, where changing expectations about the role of science in natural resource management resonate most profoundly. Key research questions are: (1) How can GIS maps contribute to mutual learning in the natural resource management arena?, and (2) Which consequences of GIS development could change approaches to natural resource management? The exploratory case study used to address these questions examines GIS maps from the Coastal Landscape Analysis and Modeling Study (CLAMS), a landscape-scale bioregional assessment in western Oregon that draws heavily on GIS technology to illustrate ecological and socioeconomic dynamics and interactions. Findings suggest that use of GIS through time may change the realm of designing and structuring decision problems, adjusting it from a largely science-driven exercise in natural resource management to a more collaborative story-making one. While epistemological differences between scientists and lay audiences remain, they can be offset through such collaboration, with concomitant shifts in power structures that could affect a range of conditions including rates of technology diffusion, and management of a broad transition in how natural resources are perceived and utilized. / Graduation date: 2005
109

Creating an emergency management system for an airborne chemical spill along a rail line in Delaware County, Indiana using GIS

Golagani, Rajashekar January 2005 (has links)
Every year thousands of tons of chemicals are transported by railroad in Delaware County, Indiana. All the rail lines pass through the geographical center of Muncie. Because of population densities close to rail lines is high, the vulnerability is substantial for any kind of chemical spill.To respond to possible emergency problems, the latest technology is needed which can be used in the most efficient and fastest way, so that lives can be protected. GIS can provide detailed, and time sensitive information before and after the disaster, thereby increasing the ability to make better decisions during the time of emergency.According to Gosnell (2004), the Emergency Management Agency of Delaware County is least prepared for any kind of action plan if a chemical spill situation occurs. This research is intended to create an Emergency Management System for a hypothetical chemical spill involving all the five phases of operation using GIS so that it can be a demonstration for the emergency management agency of Delaware County of how such a situation can be planned from its initial stage to final stage of operation thereby the life, property and environment can be protected. / Department of Geography
110

Modeling the impact of buffer strips on phosphorus concentration in Buck Creek Watershed, Indiana : a GIS approach

Gopinath, Raju 29 June 2011 (has links)
This study has attempted to model and quantify the impacts of Beneficial Management Practices (BMP) like buffer strips on the phosphorus concentration and loading in the Buck Creek Watershed of Central Indiana. The GIS based modeling was done using the Soil and Water Assessment Tool (SWAT) developed by the U.S. Department of Agriculture-Agricultural Research Services (USDA-ARS). The results from the EPA funded two year (2002-2004) Upper White River Watershed Project (UWRWP) for the Buck Creek Watershed were used as the measured base data for the modeling evaluation. These measured data were compared against the data generated out of the model simulation based on two different scenarios which took into consideration the combinations of land use, agricultural management practices, point source pollutions and BMPs. Scenario-1 simulated all the aspects of land use intensity, moderate agricultural management practices and moderate point source pollutions taking place in the Buck Creek watershed. While running the model in scenario-1, there was a noticeable increase in the phosphorus loading to the sub-watersheds ranging from 10% in the lowland sub-watershed of BC-4 to 39% in the highland sub-watershed of BC-7. In scenario-2, BMPs were implemented in the model which added 100 acres of vegetated buffer strips uniformly in all sub-watersheds and 3 acres of grassed buffers along the streams except BC-3. On re-running the model in scenario-2, there was a drastic decline in the phosphorus loading to the stream. It has been noted that there was at least 15% reduction in the loading of phosphorus to the stream where buffer strips were implemented. The present GIS modeling study helped to quantify the changes in the loading of sediments and nutrients which are induced by any parametric changes in the watershed including soil, slope, land use, agricultural management practices and BMPs. / Department of Geography

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