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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.
271

Implantação de terminal portuário no corredor logístico de exportação do Arco Norte: fatores de decisão entre porto público e terminal de uso privado. / Implantation of port terminal in Arco Norte export logistics corridor: decision factors between public port and private use terminal.

Pereira, Felipe George Gomes 08 December 2017 (has links)
O desempenho satisfatório da produção e exportação de soja e milho nos últimos anos, e projeções futuras do agronegócio, firmam o Brasil no cenário mundial como um dos maiores produtores e exportadores destas commodities. Para atender a demanda de escoamento das safras nos próximos anos, o Brasil precisará desenvolver e modernizar as rodovias, ferrovias, hidrovias, terminais portuários e plataformas logísticas. A produção das safras dos grãos destinada à exportação, embora cultivadas em épocas distintas, causam em determinados períodos congestionamento nos portos do sul e sudeste. Com a expectativa de crescimento da produção e exportação destas oleaginosas, as plataformas logísticas localizadas no norte e nordeste tornaram-se as principais alternativas para a redução dos custos logísticos no escoamento das safras, apesar de ainda apresentarem deficiências na infraestrutura de transporte. O incentivo ao investimento privado em portos públicos, através de decretos que regulamentam a Lei dos Portos (Lei Nº 12.815/2013), é uma estratégia importante para Governo Federal desenvolver novas rotas logísticas mais eficientes. Posto isso, a pesquisa baseou-se no método Analytic Hierarchy Process (AHP) para identificar e avaliar os principais critérios analisados por decisores na escolha de investimentos, visto as alternativas de arrendamento de área e infraestrutura em porto organizado e implantação de terminal de uso privado. / The satisfactory performance of the production and export of soybean and corn in the last years and future projections of the agribusiness, makes Brazil in the world scenario as one of the biggest producers and exporters of these commodities. In order to meet export demand in the coming years, Brazil will need to develop and modernize highways, railways, waterways, port terminals and logistics platforms. The production of grains for export, although developed at different times, causes in certain periods congestion in the ports of the south and southeast. With the expectation of increasing the production and export of these oleaginous products, the logistic platforms located in north and northeast have become the main alternatives for the reduction of logistical costs, although they still present deficiencies in the transport infrastructure. The encouraging private investment in public ports, through decrees that regulate the Law of Ports (Law Nº 12.815/2013), is an important strategy for the Federal Government to develop new routes and to provide an efficient logistics. Thus, the research was based on the Analytic Hierarchy Process (AHP) method to identify and evaluate the main criteria analyzed by decision-makers in the choice of investments, seeing the alternatives of area and infrastructure leasing in organized port and implementation of private use terminal.
272

Estratégias pedagógicas e gerenciamento aberto: uma análise cartográfica dos novos formatos de acompanhamento de ações pedagógicas no campo da formação continuada de professores.

Dolzane, Maria Ione Feitosa 27 February 2015 (has links)
Submitted by Alisson Mota (alisson.davidbeckam@gmail.com) on 2015-06-17T19:41:20Z No. of bitstreams: 1 Dissertação - Maria Ione Feitosa Dolzane.pdf: 3020459 bytes, checksum: 3d03c826ee61134d0699b7c6e4d69ad3 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-06-18T18:04:06Z (GMT) No. of bitstreams: 1 Dissertação - Maria Ione Feitosa Dolzane.pdf: 3020459 bytes, checksum: 3d03c826ee61134d0699b7c6e4d69ad3 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-06-18T18:24:50Z (GMT) No. of bitstreams: 1 Dissertação - Maria Ione Feitosa Dolzane.pdf: 3020459 bytes, checksum: 3d03c826ee61134d0699b7c6e4d69ad3 (MD5) / Made available in DSpace on 2015-06-18T18:24:50Z (GMT). No. of bitstreams: 1 Dissertação - Maria Ione Feitosa Dolzane.pdf: 3020459 bytes, checksum: 3d03c826ee61134d0699b7c6e4d69ad3 (MD5) Previous issue date: 2015-02-27 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The current work presente the cartographic study‟s result developed during the period between 2012 and 2014, at Education College of Amazonas Federal University, in order to map and discuss the pedagogical practices performed in a open environment with the aid of technological mediators. More accurately, the research presents the cartographic letter of the performed way by a training teachers program, known as PNAIC, developed in this open management format with the aid of technological mediators and points to new practices that reconfigure the educational institute function with regard of the training programs management through the use of Digital Communication Technologies, allowing a transparent e participative work of the actions through the digital platforms open management. / O presente trabalho apresenta o resultado de um estudo cartográfico desenvolvido no período entre 2012 a 2014, na Faculdade de Educação da Universidade Federal do Amazonas, com o objetivo de mapear e discutir as práticas pedagógicas realizadas em ambiente aberto com auxílios de mediadores tecnológicos. Mais precisamente a pesquisa apresenta a carta cartografada do caminho realizado por um Programa de Formação de Professores, o PNAIC, desenvolvido nesse formato de gestão aberta com o auxilio de mediadores tecnológicos e aponta para novas práticas que reconfiguram o papel das instituições de ensino no que se refere à gestão de programas de formação a partir do uso de Tecnologias de Comunicação Digital, as TCD‟s, permitindo um trabalho transparente e participativo das ações a partir da gestão aberta em plataformas digitais.
273

A evolução das plataformas no setor de software: uma análise na perspectiva das capacitações das organizações. / The evolution of the platforms in the software industry: an analysis in the capabilities perspective of organizations.

Facin, Ana Lucia Figueiredo 29 August 2017 (has links)
O conceito \"plataforma\" tem sido explorado em pesquisas sobre desenvolvimento de produtos, estratégia tecnológica e economia industrial. O uso de plataformas dentro das empresas e, mais recentemente, para mediar atividades de aglomerados ou ecossistemas de empresas têm sido reconhecidos como de grande importância na gestão de novos negócios, no desenvolvimento de novos produtos e na inovação. Google, Facebook, SAP, Microsoft e Apple são exemplos de empresas do setor de software cujas plataformas têm inspirado muitas outras empresas a desenvolverem produtos e serviços complementares. Ao analisar sistematicamente a literatura sobre plataformas, combinando análises bibliométricas e de conteúdo, foi possível verificar a existência de lacunas a serem estudadas no que se refere à teoria da evolução das plataformas e às adaptações organizacionais das empresas que se baseiam em plataformas para o desenvolvimento de seus produtos. Visando estender essa teoria, o objetivo desta tese foi investigar capacitações vinculadas ao relacionamento entre proprietárias de plataformas e desenvolvedores que complementam estas plataformas, como meio para compreender como elas evoluem de internas para externas. A abordagem metodológica escolhida foi a pesquisa qualitativa realizada mediante estudo de casos múltiplos em empresas nacionais e internacionais que atuam no setor brasileiro de software. Foram analisadas seis plataformas em organizações que são proprietárias de plataformas de software, e dezesseis empresas desenvolvedoras que contribuem com produtos ou serviços complementares a estas plataformas. Os resultados trouxeram algumas contribuições; a revisão sistemática da literatura, por exemplo, permitiu uma melhor compreensão e clareza sobre a evolução do conceito plataforma com identificação de tendências e temas emergentes para pesquisa. O estudo de casos realizado contribuiu com a identificação e a classificação de um conjunto de capacitações por tipo de plataforma, considerando a perspectiva do proprietário da plataforma e dos desenvolvedores. E como principal contribuição deste trabalho, tanto para teoria como para prática, fica a proposição de um quadro teórico estendido, que indica que para evoluir de uma plataforma interna para uma plataforma externa, as proprietárias de plataformas desenvolvem determinadas capacitações vinculadas ao relacionamento com desenvolvedores de software, de acordo com o tipo de plataforma. Em relação aos desenvolvedores, esse quadro aponta para o desenvolvimento de capacitações adaptadas ao tipo de plataforma. Espera-se que este trabalho contribua para o debate sobre plataformas e capacitações. / The concept of \"platform\" has been explored in many studies on product development, technology strategy, and industrial economy. The use of platforms within companies and, more recently, in mediating the activities within clusters or ecosystems of businesses, has been recognized as highly significant for the management of new businesses, for the development of new products, and for innovation. Google, Facebook, SAP, Microsoft and Apple are examples of companies in the software industry whose platforms have inspired many other businesses to develop complementary products and services. By systematically analyzing the literature on platforms, combining bibliometric analyses with content analyses, it was possible to observe the existence of gaps to be filled concerning the theory of the evolution of platforms, and the processes of organizational adaptation that platform-based companies undergo in the development of their products. Aiming at extending the theory, the objective of this work has been that of investigating capabilities associated to the relationships between platform owners and developers as a means to understand how platforms evolve from internal platforms to external platforms. The methodology chosen for this work was a qualitative study conducted via case study of multiple cases with national and international companies present in the Brazilian software industry. Six examples of software platform owners were examined, along with sixteen developers that contribute with products and services that extend those platforms. The results of the study make a few contributions to this topic; the systematic review of the literature, for example, allows a better, clearer understanding of the evolution of the concept of platform, identifying trends and emerging themes for research. The case studies contribute to identify and classify a set of capabilities by type of platform, considering the perspective of the owner and that of the developers. And as the main contribution of this work, both for theory and for practice, we have the proposition of an extended theoretical framework that indicates that, in order to evolve from an internal platform to an external one, the platform owners develop certain capabilities associated to their relationship with software developers, according to the type of platform. Regarding developers, this framework points to the development of capabilities adapted to the type of platform. We hope that this work will contribute to the ongoing debate about platforms and capabilities.
274

Pullout behaviour of suction embedded plate anchors in clay

Song, Zhenhe January 2008 (has links)
In recent years oil and gas mining has moved into increasingly deeper water in search of undeveloped fields. As water depths approach and exceed 3000 m conventional offshore foundation systems become inefficient and ineffective in stabilising platforms and floating production storage units. The trend of supporting structure design in deep water has been to install catenary and taut leg mooring systems. Consequently, many types of anchoring systems are being developed and used in order to withstand large mooring forces. The SEPLA (Suction Embedded Plate Anchor) is ideal for use in this situation. This project has employed advanced numerical techniques and centrifuge testing to study pullout behaviour of plate anchor foundations in different soil profiles and suction caisson installation effect with the aim of generating a robust framework for design. The behaviour of strip and circular plate anchors during vertical pullout in uniform and normally consolidated clays has been studied by means of small strain and large deformation finite element analyses. Both fully bonded (attached), and ‘vented’ (no suction on rear face), anchors have been considered. The current numerical results were compared with existing laboratory test data, finite element results and analytical solutions. This study showed that the ultimate pullout capacity factors (Nc) for deep embedment were 11.6 and 11.7 for smooth and rough strip anchors and 13.1 and 13.7 for smooth and rough circular anchors respectively. When the anchor base was vented, the soil stayed attached to the anchor base for deep embedment, and the pullout capacity was therefore the same as for the attached anchor. The separation depth ratio, Hs/B or Hs/D was found to increase linearly with the normalised strength ratio, su/γ'B or su/γ'D. / Numerical simulation has been conducted to assess the bearing capacity for inclined pullout plate anchors. This bearing capacity analysis was performed by embedding the anchors in clay with different initial inclinations and different embedment ratios. Both the attached anchor base and vented base were evaluated. The results showed that the bearing capacities of the inclined plate anchors were associated with the inclination angles and base conditions. The separation depth of the plate anchors can be assessed by a simple equation from vertically pulled out plate anchors. Large deformation finite element analyses of plate anchor keying in clay has been performed. The effects of anchor thickness, anchor padeye eccentricity, anchor-soil interface roughness, soil shear strength, anchor submerged weight and soil disturbance have been studied with anchors in uniform or normally consolidated clays. The numerical results were compared with transparent soil test and existing centrifuge test data. The study showed that the RITSS method works well in simulating the anchor keying process. Anchor padeye eccentricity played an important role in anchor keying. A normalised anchor geometry ratio was used to estimate the loss in embedment during plate anchor’s keying. Both finite element analysis and centrifuge tests have been conducted to study the suction caisson installation effect. In finite element analysis, the soil disturbed zone varied from 3 times the caisson wall thickness to a full area inside a caisson. / Centrifuge tests of suction embedded plate anchors were conducted in normally consolidated kaolin clay and transparent uniform soil. It can be concluded that the reduction in anchor capacity due to soil disturbance after suction caisson installation depends on re-consolidation time and soil sensitivity. The soil disturbance also reduced the loss of embedment during the anchor keying process.
275

En studie av mobilplattformen Android : med implementering av musikigenkännings- och lokaliseringstjänster / A study in the Android mobile platform : with implementations of music recognition and localization services

Larsson, Hampus, Fleischhacker, Martin January 2010 (has links)
<p>Mobilmarknaden idag består av ett antal aktörer, Nokia är störst, med Samsung, Motorola, LG, Sony Ericsson och HTC bakom sig. Nokias telefoner bygger på operativsystemet Symbian som idag är det största operativsystemet på marknaden för smartphones. Open Handset Alliance har utvecklat ett eget operativsystem för främst mobiltelefoner, kallat Android, som är bygger på Linuxkärnan. Android är framtaget som ett gratisalternativ till de dyra konkurrerande operativsystemen.</p><p>Examensarbetets syfte är att studera utvecklingsmiljön till Android och se vilka kunskaper som krävs för att effektivt kunna utveckla applikationer. I detta ingår även att identifiera vilka möjliga problem som kan uppstå under utveckling, samt dokumentera vilka utvecklingsverktyg som finns tillgängliga.</p><p> </p><p>Målet har varit att utreda hur applikationer utvecklas effektivt, det innebär att ta reda på svaren till vad som krävs av utvecklare för att kunna utveckla applikationer, vilka utvecklingsverktyg som finns, samt vilka problem som kan identifieras under utveckling. Studien valdes att genomföras med en kartläggning, för på djupet beskriva operativsystemet och hur dess delar samspelar med varandra.</p><p> </p><p>I studien undersöktes hur plattformen är uppbyggd och vilka fundamentala delar som en applikation består av, samt vilka verktyg som används för att utveckla applikationer. I studien ingick även att utveckla två stycken testapplikationer, en musikigenkänningstjänst och en lokaliseringstjänst.</p><p>Förutom erfarenhet av utveckling i språket Java krävs förståelse för hur plattformen fungerar och är uppbyggd. Förståelse för plattformen man utvecklar för är alltid viktigt, men Android skiljer sig markant från klassiska plattformar. En utvecklare bör därmed ha specifik förståelse för hur plattformen fungerar, hur applikationer är uppbyggda och hur de körs. Vidare lider Android även av att vara ett ungt operativsystem med bristfällig dokumentation och buggar som kan medföra problem under utveckling av applikationer. Som utvecklare för Android är man förvisad till att använda Eclipse som verktyg, något som fungerar smidigt då de flesta utvecklare i Java är bekanta med Eclipse. Till Eclipse finns även ett debugverktyg som man som utvecklare har stor nytta av. Den viktigaste lärdomen att ha när man utvecklar för Android är som nämnts ovan, att Android skiljer sig markant från klassiska plattformar och på vilket sätt måste ses som grundläggande kunskap för en utvecklare.</p>
276

Continuity of Service in Design for a Specific Platform : Combining service- and interaction design perspectives in a multiple platform environment

Nilsson, Linus January 2006 (has links)
<p>This thesis presents a design work in which one platform specific User Interface (UI) is redesigned to fit into the multiple platform range of a software application. Among other design methods a service design analysis and a platform general UI framework are used. The thesis aims to study the impact of these methods.</p><p>The service design analysis starts with a workshop which outcome is used as reference point during the design process and later in the analysis of the results. The general framework is extracted from existing mobile implementations of the software and is used as a guideline in the design of the platform specific solution.</p><p>The results presented show that the service design perspective added high level priority tools to the process, and there are indications that this method can be even more valuable in earlier stages of adaptation of software to new platforms. The general framework is shown to have contributed on a more detailed level and there is indication that this method can facilitate the work of obtaining continuity between platforms.</p>
277

Performance Analysis Of A Digital Communication System On Sea Platforms

Senol, Gokberk 01 November 2012 (has links) (PDF)
The transmission rate and reliability are the most crucial elements of a communication system on sea platforms. In this thesis, the performance of a high speed and reliable communication system that can be used on ship to ship sea platforms will be evaluated. The two ray channel model is used in order to characterize the channel considering the refraction and reflection. Using the channel model, the path loss and the Shannon channel capacities are obtained for different systems. In order to increase the system performance, frequency diversity technique is used and a detailed comparison of diversity combining techniques is provided. As an alternative to Shannon channel capacity, cut off rate analysis is considered to get more realistic results about the rate of the communication system in that it takes modulation into account and the results are compared with the channel capacity. Block fading model and jamming effects on the achievable rate of the system is considered for different linear modulation techniques. Finally, an OFDM system design is given as an example using the tools obtained in this work.
278

A generic information platform for product families

Sivard, Gunilla January 2001 (has links)
The research work detailed in this dissertation relates to the computer representation of information which concerns product families and product platforms. Common to competitive companies today, is the quest of designing products and processes to meet a large variety of customer needs, in short time, and based on few resources. One way to succeed with this endeavor is to plan for the variety and design a modular, or adaptive, product family based on a common platform of resources. To further increase the efficiency in delivering customized products in time, a computer processible model of the family is created, which is used to realize a customer specific product variant during the order phase. The objective of this research is to define a generally applicable model of product family information for the purpose of supporting various applications, and for achieving an efficient utilization of information. The approach is to define a model of the product family according to the theory of Axiomatic Design, which reflects the trace from various requirements to functions and different properties and components of the product. By representing information from design in a generally applicable format, this information can be reused when building the configuration models of the order phase. By adapting the model to an existing standard, information exchange between systems is supported, and access is provided to information concerning detailed physical parts as well as constructs addressing various use and version management. Contributions include a description of a model architecture with reusable functional solutions, interfaces, structures and interrelations between platform solutions and product family. Further, it is described how to extend and model the domains and interrelations of axiomatic design in an information model, which is adapted to the product modeling standard of ISO10303-214. / QC 20100812
279

Ungdomars musikvanor : En studie i hur och var svenska ungdomar upptäcker och konsumerar musik ur ett mottagarperspektiv. / Music consumption habits in youth : A study on music discovery and consumption habits from a receivers perspective in Swedish youth

Pazooki, Parham, Tauber, Andreas January 2011 (has links)
This essay is a study of the various attitudes and behavioral habits for music consumption and discovery of new music amongst young people in Sweden from a receivers perspective. The aim of the study is to review and map out the current trends, habits and cultural views on music consumption. An online survey was posted and spread on Facebook with 195 respondents as a result. The analyzed result and conclusions of the survey was then to be of use for understanding how to market and spread new music more efficiently. The study showed that there are three dominating sources of music for youth in Sweden. Whether it is discovering new music, sharing music, or just consuming music through media platforms, the three dominating trends are; friends, social media and streaming services. The traditional media channels such as TV and radio are losing power compared to earlier generations but are still vital for music marketing when working in symbiosis with positive audience response. Most of the young people in our study use the combination computer-streaming service to listen to music and discover new music through friends. They also value music recommendations from friends the most. A lot of the young people also discover music through social media, such as Facebook. The study showed that the people who discovered music through social media also used social media for sharing music. Ergo, we believe the most important channels to focus on, if you want to reach as many recipients as possible when marketing and spreading new music with young people in Sweden as the target audience, is Facebook and Spotify, while also keeping in mind the importance of Word Of Mouth and Buzz Marketing.
280

Jammer Cancelation By Using Space-time Adaptive Processing

Uysal, Halil 01 October 2011 (has links) (PDF)
Space-Time Adaptive Processing (STAP) has been widely used in spaceborne and airborne radar platforms in order to track ground moving targets. Jammer is an hostile electronic countermeasure that is being used to degrade radar detection and tracking performance. STAP adapts radar&rsquo / s antenna radiating pattern in order to reduce jamming effectiveness. Jamming power that enters the system is decreased with respect to the adapted radiation pattern. In this thesis, a generic STAP radar model is developed and implemented in simulation environment. The implemented radar model demonstrates that, STAP can be used in order to suppress wideband jammer effectiveness together with ground clutter effects.

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