Made available in DSpace on 2014-06-12T17:37:53Z (GMT). No. of bitstreams: 2 arquivo3955_1.pdf: 668196 bytes, checksum: 10e69a660bbbf0c6e4c94ddabed4e260 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2008 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Atualmente, Tecnologia da Informação (TI) tem assumido um importante papel para o sucesso e a sobrevivência das organizações. Normalmente, as empresas com melhor desempenho implementam uma Governança de TI eficiente para suportar suas estratégias. O aumento da competitividade, a globalização dos mercados, a evolução da tecnologia, a redução de custos, entre outros, contribuem para a contratação de serviços junto a fornecedores externos, através do outsourcing. Acordo de níveis de serviço (Service Level Agreement SLA) é um dos elementos integrados aos contratos de outsourcing e aos mecanismos de governança de TI. Ter um SLA negociado e bem escrito é essencial para o sucesso do outsourcing de TI. O presente trabalho propõe um modelo de negociação integrativa de SLA tendo como base a incorporação de princípios de negociação integrativa nas etapas de um projeto de outsourcing. A relevância do modelo proposto deve-se ao preenchimento da lacuna de pesquisas que associem estes princípios às negociações do SLA. Estes princípios são mais adequados nos ambientes organizacionais sujeitos às relações estáveis ao longo do tempo, onde a comunicação e a confiança entre as partes resultam em elemento de vantagem competitiva, contribuem para um melhor relacionamento e mantêm atitude cooperativa que tendem a criar condições de ganhos mútuos

Este proyecto tiene como propósito presentar, de manera estructurada, tendencias de tecnologías de información hacia los próximos años. Asimismo, identificar cuáles son las principales tecnologías que van a ser más relevantes y, a partir de esta fuente, elaborar una cartera de proyectos orientado a los conocimientos que se proveen dentro de la EISC. A través de esto, se podrá contribuir al desarrollo de futuros proyectos en la Universidad Peruana de Ciencias Aplicadas. Las fuentes de referencia de las tendencias de TI serán las que brindan Gartner, Forrester e IDC. Asimismo, realizar un benchmarking sobre las metodologías que brindan cada una de estas organizaciones. El proyecto se desarrolla en diferentes etapas, las cuales serán plasmadas dentro del documento a través de capítulos, donde se define la descripción del proyecto, objetivo de estudio, problemática y planteamiento de la solución. Esto se verá reflejado en el desarrollo de la investigación tomando como base las tecnologías y profundizando el contexto y su aplicación hacia el futuro. Asimismo, el desarrollo del proceso metodológico para la obtención de resultados y la gestión debida para estos. / This project aims to present in a structured, trends of information technology to the next five years. Also, identify key technologies that will be more relevant and, from this source, develop a portfolio of projects oriented knowledge are provided within the EISC are. Through this, it will contribute to the development of future projects in the Peruvian University of Applied Sciences. Reference sources IT trends will be providing Gartner, Forrester and IDC. Also, perform benchmarking on methodologies that provide each of these organizations. The project is developed in different stages, which will be reflected in the document through chapters, where the description of the project, study objective, problem and approach of the solution is defined. This will be reflected in the development of the research based on the technologies and deepening the context and its application to the future. Likewise, the development of the methodological process for the obtaining of results and the due management for these. / Tesis

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The mode of Ti and Sn action of anticancer compounds is still poorly understood. For each octahedral Ti(bzac)2 X2 and Sn(bzac)2 X2 (Hbzac = 1-benzoylacetone) complexes there are five possible isomers. It is not known which of these isomers is responsible for the anticancer activity. One of the Ti complex Ti(bzac)2(OEt)2 whose trade name is budotitane® is a anticancer drug on clinically trial base. Therefore we use VT-NMR (low temperature to high temperature) studies and their crystal structures (1a, 1b, and 2a) to examine their isomerization behavior, conversion rate constant k, and conversion barrier energy £GG‡. We suspect the antitumor activity of Ti and Sn compounds strongly depends on the unsubstituted phenyl rings of the £]-diketonato ligands in the outer sphere of the molecule. If these phenyl rings are replaced by methyl groups, the activity totally disappears. Therefore we propose that the anticancer activity of budotitane may be determined by a DNA intercalating mechanism. We further changed the ligand from Hbzac to FHnpac (FHnpac = 4, 4, 4-trifluoro-1-(naphthalen-3-yl) butane-1, 3-dione) in order to monitor their isomers exchange via 1H NMR. The related crystal structures (1a-NF, 1b-NF, and 2a-NF) were obtained fortunately. The stereochemistry of Ti and Sn complexes as well as their controlling factors is discussed.

Titanium (Ti) and its alloys have been widely used in aerospace, biomedical, chemical processing, marine facilities, and sports equipment because of their low density, very high tensile strength and toughness, and high corrosion resistance. However, the poor tribological properties has been a major problem and limited their widespread applications. Deposition of wear/corrosion resistant diamond-like carbon (DLC) coatings on Ti alloys is promising to significantly enhance the durability and service performances of these materials. However, the adhesion between DLC coatings and Ti alloy substrates is too weak to meet the application requirements. Up to now, approaches including optimization of deposition conditions, surface treatment of the substrate, deposition of an interlayer, and incorporation of metallic or nonmetallic elements have been used for adhesion enhancement of DLC on Ti alloys. In this research, a new method, nanodiamond particles incorporation, was developed for adhesion enhancement of DLC coatings on Ti alloys. In order to achieve high diamond nucleation without damaging the Ti alloy, nucleation enhancement of diamond on Ti alloys by nanodiamond seeding, tungsten (W) interlayers, and high methane concentration were studied. Diamond, DLC and W deposition were carried out by microwave assisted chemical vapor deposition, direct ion beam deposition and hot filament assisted chemical vapor deposition, respectively. Scanning electron microscopy, Atomic force microscopy, X-ray diffraction, Raman spectroscopy and synchrotron-based near edge extended X-ray absorption fine structure spectroscopy were used to characterize the microstructure and chemical bonding of the as-deposited particles and films, and indentation testing was used to evaluate the adhesion of the as-deposited coatings. By nanodiamond seeding or applying a W interlayer, significantly enhanced diamond nucleation has been obtained on Ti alloys, and consequently high quality nanocrystalline diamond thin films have been obtained on Ti alloys at decreased deposition temperature and reduced deposition time, which mitigates the deterioration of Ti alloy substrates due to hydrogen diffusion during diamond deposition and also enhances the adhesion of diamond on Ti alloys. Based on these results, nanodiamond particles (NDP) with high nucleation density and high adhesion were deposited on Ti alloys initially to enhance the adhesion of DLC films on Ti alloys. Results show that the pre-deposited NDP can significantly increase the adhesion of DLC on Ti6Al4V, probably due to the increased interfacial bonding, mechanical interlocking, and stress relief by the incorporation of NDP into DLC to form NDP/DLC composite films.

Todays modern warfare puts high demands on military equipment. Where soldiers are concerned, types of communication equipment such as radios, displays and headsets play a central role. A modern soldier is often required to maintain communication links with other military units. These units can, for example, consist of platoon commanders, headquarters and other soldiers. If the soldier needs to make a report to several units, the message needs to be sent to several radio networks that are connected to these separate units. This multiplicity in turn requires several items of radio equipment connected to the radio network frequencies. Considering all the communication equipment that is used by a modern soldier, the parallel data flow and all the weight a soldier needs to carry, can get quite extensive.  \noindentAt Saab AB it has been proven that a combination of powerful embedded hardware platforms and cross platform software fulfills the communication needs. However, the weight issue still remains as these embedded platforms are quite bulky and hard to carry. In order to increase the portability, a tailored Android application for smaller low-power embedded hardware platform has been developed at Saab AB. Saab AB has also developed a portable analogue interconnection unit for connecting three radios and a headset, the SKE (Sammankopplingsenhet). \noindentSaab AB intends to develop a new product for soldiers, the RPCS (Rugged Portable Communication System), with capacities of running the Android application and combining the audio processing functionality of the SKE. This thesis focuses on developing a hardware platform prototype for the RPCS using Beagleboard. The SKE audio processing functionality is developed as a software application running on the Beagleboard.

Surface-induced osseointegration and antibacterial capability are very important criteria for the clinical success of titanium implants. To enhance these two criteria, an architectural hybrid system is constructed onto Ti-6Al-4V with a rough surface. First, thermal oxidation (TO), treatment with hydrogen peroxide (H2O2) and a mix of TO and H2O2 (Mixed) are used to modify the surface topography and chemistry of Ti-6Al-4V disks. Surface characterizations by the use of microscopes and spectroscopes indicate that TO can induce more favorable topography, roughness, wettability and hydroxyl group concentration on Ti-6Al-4V surfaces. Therefore, an alginate/chitosan LBL film that incorporates antibacterial nano-silver is bridged onto thermally oxidized Ti-6Al-4V alloy by mussel-inspired dopamine. The microscopies and spectrometers confirm that the hybrid system is successfully fabricated onto the Ti-6Al-4V surface while the sub-micron topography induced by TO is maintained. Bone marrow stem cell (BMSC) adhesion, proliferation and differentiation are up-regulated by the synergy of sub-micron surface produced by TO and alginate/chitosan LBL film. The incorporation of nano-silver into the hybrid system is demonstrated to inhibit the growth of Escherichia coli and Staphylococcus aureus, but not jeopardize the enhanced BMSC activities. Taken together, this thesis presents a promising strategy to fabricate novel Ti-6Al-4V implants with enhanced osseointegration and antibacterial capability.

Thesis (M. Soc. Sc.)--University of Hong Kong, 1995. / Includes bibliographical references (leaf 155-163).

Thesis (M.Soc.Sc.)--University of Hong Kong, 1995. / Includes bibliographical references (leaf 155-163) Also available in print.

Made available in DSpace on 2016-08-29T15:33:11Z (GMT). No. of bitstreams: 1 tese_3336_.pdf: 1706812 bytes, checksum: 0e20b14431a3c7991d5dea936b8b6193 (MD5) Previous issue date: 2009-08-21 / A tecnologia da informação (TI) vem se tornando essencial para as organizações. Nesse contexto, o gerenciamento de TI, vem evoluindo para incluir gerenciamento de serviços e governança de TI, apontando para paradigmas de gerenciamento de TI orientado ao negócio. Dessa forma, o alinhamento entre a TI e o negócio tem sido considerado como um dos fatores preponderantes para a efetividade de tais paradigmas. Em adicional, são mencionadas as contribuições provenientes da automação das atividades de gerenciamento.Acompanhando essa evolução, o gerenciamento de configuração desempenha um papel fundamental, fornecendo informações precisas da TI a todos os envolvidos no gerenciamento. Todavia, em função desse estreito relacionamento com todos os agentes envolvidos no gerenciamento, a interoperabilidade entre esses agentes tem sido caracterizada como um dos principais desafios de pesquisa em gerenciamento de redes e serviços.Nesse sentido, o uso de ontologias, em especial, ontologias fundacionais, tem sido indicado como uma maneira promissora de se obter interoperabilidade semântica no domínio de gerenciamento de configuração, uma vez que elas expressam o significado dos conceitos do domínio, bem como os relacionamentos existentes entre eles, de forma clara e explícita. Além disso, ontologias permitem que esse significado seja definido em um formato legível por máquinas, tornando o conhecimento compartilhado por humanos e também por sistemas computacionais, permitindo a automação de processos.Assim, este trabalho apresenta uma proposta de modelagem conceitual do domínio de gerenciamento de configuração, no contexto do gerenciamento de serviços e governança de TI, baseada em ontologias fundacionais. O propósito dessa ontologia é prover um modelo conceitual desse domínio, comprometido em maximizar a expressividade, a clareza e a veracidade dos conceitos pertencentes a ele. Ademais, este trabalho apresenta uma proposta de modelo de implementação, derivado do modelo conceitual desenvolvido. O objetivo é realizar uma prova de conceito da ontologia e também demonstrar como essa ontologia pode apoiar as atividades de gerenciamento de maneira automatizada.