Efficient utilization of frequency bands has attracted more and more attention. Most of the licensed spectrum nowadays is under-utilized and some unlicensed services are allowed to use the available spectrum without causing harmful interference to the primary users. Therefore, unlicensed users should be able to detect spectrum holes reliably. Spectrum sensing and estimation is an important factor to achieve this. In this thesis, several spectrum sensing and estimation methods are compared based on receiver operating characteristics. Simulation results show that there is a trade-off among different methods.

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Made available in DSpace on 2017-07-10T18:17:57Z (GMT). No. of bitstreams: 1 Roseane Cleide de Souza.pdf: 2278087 bytes, checksum: a07fa8eda390a5422868e9c34b1b1952 (MD5) Previous issue date: 2016-01-19 / This inquiry takes as an object of study the Special Social Protection of middle Complexity in the frontier and like general objective apprehends the peculiarities of the Special Social Protection of Middle complexity from the CREAS in the frontier of Mouth of river of the Iguaçu/PR. The adopted methodology went to field work with use of itinerary of questions that was applied near the hard-working professionals of HIS what act in CREAS in the frontier of Mouth of river of the Iguaçu/PR. For referenciar theoretically the studies object bibliographical texts revisions were carried out on Work, social question , Social, and Political Politics of Social work. The conclusions point to the absence of conditions of work, to the nonexistence of a methodology built for the work with families / individuals of the PSE of middle complexity, besides the lack of articulation with international public organisms that make possible the service in CREAS of the frontier of Mouth of river of the Iguaçu/PR. / Esta pesquisa tem como objeto de estudo a Proteção Social Especial de media Complexidade na fronteira e como objetivo geral apreender as particularidades da Proteção Social Especial de Media complexidade a partir dos CREAS na fronteira de Foz do Iguaçu/PR. A metodologia adotada foi a pesquisa de campo com uso de roteiro de questões que foi aplicado junto aos profissionais trabalhadores do SUAS que atuam nos CREAS na fronteira de Foz do Iguaçu/PR. Para referenciar teoricamente o objeto de estudos foram realizadas revisões bibliográficas de textos sobre Trabalho, questão social , Política Social, e Política de Assistência Social. As conclusões apontam para a ausência de condições de trabalho, para a inexistência de uma metodologia construída para o trabalho com famílias/indivíduos da PSE de media complexidade, além da falta de articulação com organismos públicos internacionais que possibilitem o atendimento nos CREAS da fronteira de Foz do Iguaçu/PR.

<p>The stability and the receptivity of three-dimensional flat plate boundary layers is studied employing parabolised stability equations. These allow for computationally efficient parametric studies. Two different sets of equations are used. The stability of modal disturbances in the form of crossflow vortices is studied by means of the well-known classical parabolised stability equations (PSE). A new method is developed which is applicable to more general vortical-type disturbances. It is based on a modified version of the classical PSE and describes both modal and non-modal growth in three-dimensional boundary layers. This modified PSE approach is used in conjunction with a Lagrange multiplier technique to compute spatial optimal disturbances in three-dimensional boundary layers. These take the form of streamwise oriented tilted vortices initially and develop into streaks further downstream. When entering the domain where modal disturbances become unstable optimal disturbances smoothly evolve into crossflow modes. It is found that non-modal growth is of significant magnitude in three-dimensional boundary layers. Both the lift-up and the Orr mechanism are identified as the physical mechanisms behind non-modal growth. Furthermore, the modified PSE are used to determine the response of three-dimensional boundary layers to vortical free-stream disturbances. By comparing to results from direct numerical simulations it is shown that the response, including initial transient behaviour, is described very accurately. Extensive parametric studies are performed where effects of free-stream turbulence are modelled by filtering with an energy spectrum characteristic for homogeneous isotropic turbulence. It is found that a quantitative prediction of the boundary layer response to free-stream turbulence requires detailed information about the incoming turbulent flow field. Finally, the adjoint of the classical PSE is used to determine the receptivity of modal disturbances with respect to localised surface roughness. It is shown that the adjoint approach yields perfect agreement with results from Finite-Reynold-Number Theory (FRNT) if the boundary layer is assumed to be locally parallel.  Receptivity is attenuated if nonlocal and non-parallel effects are accounted for. Comparisons to direct numerical simulations and extended parametric studies are presented.</p>

Submitted by Maicon Juliano Schmidt (maicons) on 2015-07-17T13:50:54Z No. of bitstreams: 1 Miria Trentin Cargnin_.pdf: 3021619 bytes, checksum: ff4937858c71c1020f0674ace1809dcf (MD5) / Made available in DSpace on 2015-07-17T13:50:54Z (GMT). No. of bitstreams: 1 Miria Trentin Cargnin_.pdf: 3021619 bytes, checksum: ff4937858c71c1020f0674ace1809dcf (MD5) Previous issue date: 2015-03-09 / Nenhuma / Esta tese tem o objetivo de problematizar a relação saúde e educação no Programa Saúde na Escola (PSE) e o entendimento da escola como espaço de difusão de práticas de saúde na população. Esta pesquisa foi desenvolvida com base na implantação do Programa Saúde na Escola (2007), política que se desenvolve na educação escolar pública. A pesquisa analisou os seguintes documentos relativos ao Programa: Orientações sobre o Programa Saúde na Escola para a Elaboração dos Projetos Locais (2008); Agenda – Educação e Saúde (2010); Passo a Passo PSE – Tecendo Caminhos da Intersetorialidade (2011); Orientação para Elaboração do Projeto Municipal PSE (2011); e Manual Instrutivo – PSE (2013). Como metodologia analítica, foi utilizado o referencial teórico dos estudos foucaultianos, com os conceitos ferramenta de governamento e de discurso. As análises empreendidas sobre os materiais de pesquisa permitiram mostrar que o Programa Saúde na Escola é uma estratégia de disseminação de saúde, principalmente para a população mais vulnerável socialmente. Por meio do PSE, é possível, além de promover a saúde, prevenir os riscos de doenças, sendo um importante instrumento para conhecer, vigiar e controlar o educando e, consequentemente, a população como um todo. Neste estudo, demonstro que a disseminação de saúde é facilitada por meio de intersetorialidade (educação e saúde), capacitação dos recursos humanos, distribuição de recursos humanos e materiais, ampliação do número de instituições escolares, participação popular, atuação que envolve desde educandos até a comunidade local, produção de desejo por saúde e mudança de condições de vida. Constato que o PSE é uma estratégia de governamento que propõe determinados comportamentos para fazer com que o educando assuma os investimentos na sua própria condução de saúde, ou seja, para que desenvolva competências a fim de tornar-se gestor dos riscos de sua saúde e também multiplicador para a sua família e comunidade. / This thesis aims to problematize the relationship between health care and education in the School-Based Health Care Program (PSE) and the understanding of school as a place to spread health care practices among the population. This research is based on the implantation of the School-Based Health Care Program (2007), a policy that takes place in public schools. The research analyzes the following documents related to the Program: Guidelines of the School-Based Health Care Program for Local Projects (2008); Agenda - Education and Health Care (2010); PSE Step by Step - Opening Ways towards Inter-Sectoriality (2001); Guidelines for PSE Municipal Project (2011); and Instruction Handbook - PSE (2013). The theoretical reference of Foucauldian studies has been used as analytical methodology, by employing the tool concepts of government and discourse. The analyses of the research materials hasled to the understanding that the School-Based Health Care Program is a strategy to spread health care, particularly among socially vulnerable populations. Besides promoting health care, PSE allows the prevention of risk of diseases, and it is an important tool to know, oversee and control students and, consequently, the population as a whole. In this study, I have shown that spreading health care has been facilitated by inter-sectoriality (education and health), human resources qualification, material and human resources distribution, increased number of schools, popular participation, action involving students and the local community, production of a desire for health, and change of living conditions. I have found that PSE is a governing strategy that proposes certain behaviors in order to have students to invest in the conduction of their own health care, i.e. for them to develop skills to manage their health risks and spread such knowledge among their families and communities.

Nucleic acids are macromolecules in cells for storing and transferring genetic information. Moreover, nucleic acids, especially RNAs, can fold into well-defined 3D structures and catalyze biochemical reactions. As ubiquitous biological molecules in all living systems, nucleic acids are important drug targets, and they can also be used in diagnostics and therapeutics. Structural information of nucleic acids provides the foundation for DNA and RNA function studies. X-ray crystallography has been a useful tool for structural studies of bio-macromolecules at atomic level. There are two major problems in macromolecular crystal structure determination: phasing and crystallization. Although selenium derivatization is routinely used for solving novel protein structures through the MAD phasing technique, the phase problem is still a critical issue in nucleic acid crystallography. The covalent selenium-derivatization of nucleic acids has been proven to be a useful strategy for solving the phase problem in nucleic acid X-ray crystallography. Besides the facilitation of nucleic acid crystallography, there is also a wide range of other applications for selenium-derivatized nucleic acids (SeNA). The investigation presented in this dissertation mainly focuses on the following research subjects (1) Synthesis and characterization of selenium-derivatized nucleic acids for X-ray crystallography, especially phosphoroselenoate RNAs. They are generated and used for crystallization. (2) Application of selenium-derivatized RNA for RNA interference. Phosphoroselenoate RNAs are tested for RNAi activities. (3) Synthesis and characterization of the uridine 5’-triphosphate modified with selenium at position 4. (4) Facile synthesis and antitumor activities of selenium modified deoxyribonucleosides. MeSe-thymidine nucleosides have shown antitumor activity in cell assays.

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Comparison of pig?s stunning (by electricity or CO2) at slaughterhouse and monitoring the occurrence of quality variance PSE during 48 hours post mortem was main goal of this work. Basic indicators such as pH1, drip loss of water and meat colour (lightness) were determined to assess PSE. In addition to these indicators have been also evaluated values of pH24 and pH48. The result of those indicators is that during stunning by CO2 gas value of pH1 was higher by 0,3 degree (P < 0,001), value of pH24 was higher by 0,243 (P < 0,001) and average drip loss of water was lower by 2,16 % (P < 0,001). Changes in other evaluated indicators were statistically non-significant. Occurrence of quality variance which tends to PSE (PSEi) and PSE was evaluated at slaughterhouse which is using electricity for stunning as higher by 7,843 % at PSEi and 1,961 % at PSE based on value of pH1. As higher was evaluated also drip loss of water by 23,810 % at PSEi respectively 4,762% at PSE. Difference between occurring of PSEi and PSE based on meat colour was not observed. The highest correlation dependence was found between pH1 and drip loss of water (r = 0,586, R2 = 34,315 %).

The main aim of the present thesis was to compare different types of slaughter lines and their influence on the occurence of meat defects with emphasis on PSE defect. The research has been concentrated mainly on the slaughter lines which use the technology of stunning the animals with electricity and concentrated CO2. The research monitors the rate of PSE defect from the slaughter to the cutting of the pig (approximately 48 hours). For considering the difference in quality of the meat the basic identification indicators of both pH1 and the draining of meat were created. Furthermore, we monitored pH24 and pH48, too. Analyzing of the above mentioned indicators shows that stunning with concentrated CO2 is more suitable with regard to the quality of the meat. The average pH1 value was 0,3 (p < 0,001) higher, pH24 value was 0,243 (p < 0,001) higher and the average value of meat juice drainage was 2,16% lower (p < 0,001). The anylysis of the PSEi and PSE quality difference based on pH1 when stunning with the use of concentrated CO2 shows lower frequency of PSEi (7,843% lower) and PSE (1,961% lower). Based on meat juice drainage, PSEi frequency was 23,810% lower and PSE 4,762 % lower.

Master‘s thesis is focused on the possibility of financing a company through entering the alternative market of the Prague Stock Exchange Ltd. The alternative market of the Prague Stock Exchange is the START Market, which is suitable for smaller and innovative czech companies. This is about an unregulated market, which means that the conditions of admission conditions and trading rules are set by the stock exchange. The thesis defines the basic starting points, which are connected with the capital market, the market organizer and the initial public offering of stocks (IPO).