<p>Transitioning to cloud computing is a complex and major effort for large multinational corporations (MNCs). Automated cloud migration tools (ACMTs) have been developed and are evolving to streamline this process. The potential benefits of their use are reported to be significant in terms of cost, time, and business innovation. Academic research on ACMTs and the best leadership practices for their use has been limited. </p><p> </p><p>The purpose of the research was to identify the best leadership practices of MNCs in the use of automated migration tools for the adoption of commercial cloud computing platforms. Adoption of cloud computing is a major technological shift occurring globally, and is still in early stages of growth. Major providers of commercial cloud computing platforms include technological giants such as Microsoft, Amazon Web Services, Google, Oracle and IBM.</p><p> </p><p>A meta-analysis designed research approach focusing on the triangulation of case studies, cloud computing industry data and trends from cloud service providers (CSP) revealed that best practices of leaders within MNCs fall under three main categories: awareness, impact and actions. Further, it was determined that the ACMTs with the most advanced capabilities do not necessarily equate to faster realization of cloud value for the MNC. </p><p> </p>With the continued development of ACMTs and their growing adoption, further study on the role of automation in cloud migration solution deployment will be critical, as ACMT capabilities will continue to mature. No longer the sole domain of becoming a market leader alone, organizations that utilize ACMTs are increasingly doing so just to maintain competitive parity, as the true differentiator in organizational excellence is now in cloud optimization and not simply just getting to the cloud.

This diploma thesis analyzes the PLC communications in various scenarios. The first part of the thesis describes the principle of narrowband and broadband communication and the analysis of electrical lines. The next part describes the NS-3 framework, simulation scenarios for establishment the effect of branches and other parameters on the baud rate. The last part determines the minimum number of repeaters and their location on the extended topology.

This work presents steps in creation of remote position tracking application. Document introduces history of geographical positioning and navigation, and describes development of navigation from primitive utilities to complex radio navigation systems. Global Positioning System is described in more detail including NMEA protocol used by GPS receivers. This work also presents several current navigation applications. Based on obtained information work presents analysis, object-oriented design and implementation of remote position tracking system.

This Graduation Theses dissertate about a creation of a drawing documentation at the professional CAE EPLAN Electric P8 system. One original solution of a remote control and of motor-generator monitoring with a mobile phone, short SMS-aided in this case, was used as an example of the drawing documentation. As has allready been noted in previous Bachelor Thesis, this application can be use not only for a remote control of a motor-generator, but this solution is suitable for other electric devices too, which are out of reach of an attendance for example. In our case a generator with 6kVA power is concerned with rated output voltage 230Vac and rated current 25A. The system of a remote control has the advantage that it is created from standard components (electric instruments, a PLC – programmable automat, a GSM modem, an operating panel and the respective program in the PLC).

Dominant discourses on power, childhood and gender lead to power inequalities in social relationships in families and schools, allowing abuses of power (the subjugation and marginalisation of women and young people). These dominant structures of belief are often disrespectful of young people's experiences, stories and knowledges. This research attempted to respond to dilemmas in child relationships, to challenge belief structures that construct relationships between adults/young people, and to empower young people to stand up for their beliefs and make their voices heard. The research was guided by a post-modern, narrative pastoral approach. To deconstruct discourses that restrict young people within social institutions, social construction discourse, feminist post-structuralism, narrative theology and feminist theology were used. Narrative practices were used to look at depression, guilt, trouble and anger. Re-authoring conversations were used to construct preferred stories about young people's identities and to explore alternative stories and the not-yet-said on drugs. / Philosophy, Practical & Systematic Theology / M. Th. (Practical Theology (Pastoral Therapy))

Dominant discourses on power, childhood and gender lead to power inequalities in social relationships in families and schools, allowing abuses of power (the subjugation and marginalisation of women and young people). These dominant structures of belief are often disrespectful of young people's experiences, stories and knowledges. This research attempted to respond to dilemmas in child relationships, to challenge belief structures that construct relationships between adults/young people, and to empower young people to stand up for their beliefs and make their voices heard. The research was guided by a post-modern, narrative pastoral approach. To deconstruct discourses that restrict young people within social institutions, social construction discourse, feminist post-structuralism, narrative theology and feminist theology were used. Narrative practices were used to look at depression, guilt, trouble and anger. Re-authoring conversations were used to construct preferred stories about young people's identities and to explore alternative stories and the not-yet-said on drugs. / Philosophy, Practical and Systematic Theology / M. Th. (Practical Theology (Pastoral Therapy))

Submitted by Samira Prince (prince@ufpa.br) on 2012-10-11T14:46:39Z No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_HermesSoftwareModem.pdf: 1508763 bytes, checksum: 32b425ae50520bfbfc5e290bde849c12 (MD5) / Approved for entry into archive by Ana Rosa Silva(arosa@ufpa.br) on 2012-10-11T15:28:53Z (GMT) No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_HermesSoftwareModem.pdf: 1508763 bytes, checksum: 32b425ae50520bfbfc5e290bde849c12 (MD5) / Made available in DSpace on 2012-10-11T15:28:53Z (GMT). No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_HermesSoftwareModem.pdf: 1508763 bytes, checksum: 32b425ae50520bfbfc5e290bde849c12 (MD5) Previous issue date: 2011 / Esta dissertação tem como objetivo principal apresentar a implementação de um software-modem ADSL totalmente escrito em Java, utilizando o framework Ptolemy II, denominado de Hermes (de "A Handy Experimental Software Modem System"). Um software-modem é útil em ocasiões onde se precisem executar testes e simulações de sistemas de comunicação com um número grande de modens e quando os parâmetros desses sistemas precisem ser modificados com um alto grau de liberdade. Além disso, um software-modem possui características que tornam mais fácil a tarefa de acrescentar, eliminar, validar e analisar funções e algoritmos de processamento de sinais e de telecomunicações. Testes e simulações foram realizados para analisar a funcionalidade do Hermes, utilizando, inclusive, o Tracespan, um equipamento para análise não-intrusiva de redes DSL. A partir dos resultados obtidos em conjunto com o Tracespan, foi possível validar com sucesso as funções do Hermes. / This dissertation has as main objective to present the implementation of an ADSL software-modem totally written in Java, using the Ptolemy II framework, named Hermes (from \A Handy Experimental softwaRe ModEm System"). A software-modem is useful in cases where one needs to perform tests and simulations of communication systems with a large number of modems and when systems' parameters must be changed with high degree of freedom. Besides, a software-modem has features that make it easy to add, eliminate, validate and evaluate signal processing and telecommunications functions and algorithms. Tests and simulations were performed to evaluate the Hermes functionality, including the use of Tracespan, a non-intrusive analisys equipment for DSL networks. From obtained results together with Tracespan, it was possible to successfully validate the Hermes functions.

Submitted by Edisangela Bastos (edisangela@ufpa.br) on 2012-04-17T18:20:12Z No. of bitstreams: 2 Dissertacao_OtimizacaoSistemasDSL.pdf: 665935 bytes, checksum: edd3979f72236aaf631c220434f68f41 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Edisangela Bastos(edisangela@ufpa.br) on 2012-04-17T18:20:34Z (GMT) No. of bitstreams: 2 Dissertacao_OtimizacaoSistemasDSL.pdf: 665935 bytes, checksum: edd3979f72236aaf631c220434f68f41 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2012-04-17T18:20:34Z (GMT). No. of bitstreams: 2 Dissertacao_OtimizacaoSistemasDSL.pdf: 665935 bytes, checksum: edd3979f72236aaf631c220434f68f41 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2010 / Esta dissertação apresenta contribuições à algumas modalidades de gerenciamento de espectro em redes DSL que tem recebido pouca atenção na literatura : minimização de potência e maximização de margem de ruído. Com relação a minimização de potência, cerca de 60% da potência total consumida pelos modems DSL é utilizada na transmissão. A contribuição dessa dissertação nesse âmbito foi provar matematicamente que os algoritmos de maximização de taxa também podem ser usados para minimizar potência. Dessa forma, praticamente se elimina o atraso histórico entre o estado da arte em maximização de taxa e minimização de potência, colocando-os no mesmo nível de desenvolvimento. A segunda contribuição dessa dissertação é sobre a modalidade de maximização de margem de ruído, de modo a otimizar a estabilidade de redes DSL. Nessa linha de pesquisa, essa dissertação apresenta um novo alogoritmo para a maximização de margem multiusuário, que apresenta desempenho superior a um algoritmo publicado anteriormente na literatura especializada. / This dissertation presents contributions to some strategies of spectrum management which have received few attention in the literature: power minimization and noise margin maximization. Regarding power minimization, about 60% of the total power drained by the DSL transceivers are used in the transmission. The contribution of this dissertation with respect to this field was to prove mathematically that the algorithms of rate maximization can also be used to minimize power. This way, the development gap between these two modes of operation vanishes, turning them in the same level of development. The second contribution of this dissertation is about the noise margin maximization, in order to optimize the stability of DSL networks. In this direction, this dissertation presents a new algorithm of multiuser margin maximization, which shows superior performance when compared to a previous algorithm published in the specialized literature.

CAPES / Nesta Tese de Doutorado propõe-se um modelo de consumo de energia para redes acústicas subaquáticas que leva em consideração as especificidades do ambiente subaquático, como a comunicação utilizando ondas acústicas, a dependência da largura de banda do canal com a perda de percurso, que varia tanto com a distância quanto com a frequência, e o ruído. O desvanecimento, resultado do multipercurso, normalmente modelado pelas distribuições Rayleigh e Rice nas transmissões terrestres, é modelado pela distribuição K, que melhor representa a severidade do ambiente subaquático. O modelo considera uma rede subaquática linear de múltiplos saltos e a possibilidade de retransmissões para calcular a energia total consumida para cada bit de informação transmitido com sucesso entre a fonte e o destino. A fim de obter o menor consumo de energia, a SNR e a frequência de operação também são otimizadas, sendo considerado o uso de códigos convolucionais, cuja taxa ótima que leva ao menor consumo é determinada. Uma análise teórica é desenvolvida para cenários com e sem limitação de atraso. No primeiro caso avalia-se o consumo de energia quando retransmissões não são permitidas ou devem ser limitadas e, portanto, uma FER residual deve ser tolerada. No segundo caso infinitas retransmissões são permitidas até que um pacote seja recebido sem erros. Para ambos cenários o número ótimo de saltos que minimiza o consumo de energia é determinado, e na sequência o impacto do número de tentativas de transmissão é considerado. Resultados numéricos são apresentados, mostrando que o esquema de múltiplos saltos é mais eficiente em termos de consumo de energia que a transmissão direta. Além disso, os resultados mostram que um número pequeno de tentativas de transmissão é suficiente para alcançar uma redução considerável no consumo de energia em redes de múltiplos saltos, limitando o atraso médio por pacote transmitido, o que é muito interessante em aplicações reais. / In this Thesis, an energy consumption model for underwater acoustic networks is proposed. The model takes into account the specificities of the underwater environment, such as the use of acoustic waves for communication, dependence of the underwater acoustic channel bandwidth with the path loss, which varies with both the distance and frequency, and noise. The fading, usually modeled by Rayleigh and Rice distributions on terrestrial communications, in this work, is modeled by the K distribution, which best represents the severity of the underwater environment. The model considers a linear multi-hop underwater network and the possibility of retransmissions to calculate the total energy consumed for each bit of information successfully transmitted between the source and the destination. In order to obtain the minimum energy, the SNR and the operating frequency are also optimized. The use of convolutional codes is considered and the optimal code rate, which leads to the minimum energy consumption, is determined. A theoretical analysis was developed for two scenarios: delay constrained and delay unconstrained networks, indicating the optimal number of hops which minimizes energy consumption. Next, the impact of the number of transmission trials was considered. A numerical analysis was also performed for both the scenarios. The numerical results validate the theoretical analysis, showing that the multi-hop scheme is more efficient in terms of energy consumption when compared to direct transmission. Furthermore, the results show that a small number of transmission trials is sufficient to achieve a considerable reduction in energy consumption in multi-hop networks, limiting the average delay per packet transmitted, which is very interesting in real applications.

This thesis is concerned with the measurement of physical quantities. Thesis describes sensors in general terms and requirements, which delivers latest trends in the field of automation. The main theme of this thesis is sensors for meassuring pressure, and their connection to the automation chain. In the next part thesis describes the design of the converter for connecting SMART sensors for pressure measuring, that use HART communication protocol, to the automation systems managed by a communication protocol IO-link. First will be described in detail various communication standards by their ISO OSI model, and on this theoretical basis will be based design of converter between communication protocol HART and communication protocol IO-Link. The last part will be Designed software for this converter.