Análise e projeto de superfícies seletivas em frequência multibanda e/ou banda larga

Frequency selective surfaces (Frequency Selective Surface - FSS) are often used in various applications in telecommunications. Some of these applications may require that these structures have response with multiple resonance bands. Other applications require that the FSS response have large frequency range, to meet the necessary requirements. FSS to design with these features there are numerous techniques cited in the scientific literature. Thus, the purpose of this paper is to examine some common techniques such as: Overlap of FSS; Elements combined; Elements Elements convolucionados and fractals. And designing multiband FSS and / or broadband selecting simple ways in terms of construction and occupy the smallest possible space, aiming at practical applications. Given these requirements, three projects FSS were performed: a technology applied to IEEE 802.11 a/b/g/n and two projects for application in UWB. In project development, commercial software Ansoft DesignerTM and experimental results were satisfactory was used

Projeto e Implementação em Ambiente Foundation Fieldbus de Filtragem Estocástica Baseada em Análise de Componentes Independentes (M175)

This work considers the development of a filtering system composed of an intelligent algorithm, that separates information and noise coming from sensors interconnected by Foundation Fieldbus (FF) network. The algorithm implementation will be made through FF standard function blocks, with on-line training through OPC (OLE for Process Control), and embedded technology in a DSP (Digital Signal Processor) that interacts with the fieldbus devices. The technique ICA (Independent Component Analysis), that explores the possibility of separating mixed signals based on the fact that they are statistically independent, was chosen to this Blind Source Separation (BSS) process. The algorithm and its implementations will be Presented, as well as the results

Aperfeiçoamento no projeto de um protótipo de misturador-decantador à inversão de fases visando aplicação na indústria do petróleo

In the oil industry the mixture oil/water occurs in the operations of production, transportation and refining, as well as during the use of its derivatives. The amount of water produced associated with the oil varies and can reach values of 90% in volume in the case of mature phase of the production fields. The present work deals with the development of new design of the Mixer Settler based on Phase Inversion (MDIF) in a laboratory scale. We envisage this application in industrial scale so the phases of project, construction and operation are considered. The modifications most significant, in comparison with the original prototype, include the materials of construction and the substitution of the equipment used in the mixing stage of the process. It was tested the viability of substitution of the original system of mechanical mixing by a static mixer. A statistical treatment by means of an experimental design of composed central type was used in order to evaluate the behavior of the main variables of the separation process as function of the efficiency of separation for the new device. This procedure is useful to delimit an optimal region of operation with the equipment. The variables of process considered on the experimental design were: oil concentration in the feeding water (mg/L); Total volumetric flow rate (L/h); Ratio organic/water on volumetric basis (O/A). The separation efficiency is calculated by comparison of the content of oil and greases in the inlet and outlet of the equipment. For determination of TOG (Total Oil and Grease), the method used was based in the absorption of radiation in the infra-red region. The equipment used for these determinations was InfraCal® TOG/TPH Model HATR-T2 of the Wilks Enterprise, Incorporation. It´s important to stand out that this method of measure has being used by PETROBRAS S.A. Results of global efficiency of separation oil/water varied from 75.3 to 97.7% for contaminated waters containing up to 1664,1 mg/L of oil. By means of tests carried out with a real sample of contaminated water supplied by PETROBRAS we have got an effluent specified in terms of the legal standards required for discharging. Thus, the new design of equipment constitutes a real alternative for the conventional systems of treatment of produced water in the oil industry

Projeto e Operação em Escala Semi-Industrial de um Equipamento para Tratamento de Águas Produzidas na Indústria do Petróleo Utilizando Nova Tecnologia: misturador-decantador à inversão de fases - MDIF

The aim of this work is to use a new technology in the treatment of produced wastewaters from oil industry. An unit for treat produced waters called UTMDIF, was designed, installed and operated in an industrial plant for treatment of effluents from oil industry. This unit operates by means of the method of separation of phase inversion and can become a promising alternative to solve the problem of oil/water separation. This method constitutes the basis of the working of a new design of mixersettler of vertical configuration which occupies small surface area. The last characteristic becomes specially important when there is limitation on the lay-out of the plant, for example, over maritime platforms to explore oil. This equipment in a semi-industrial scale treats produced wastewaters contaminated with oil at low concentrations (ranging from 30 to 150 mg/L) and throughputs of 320 m3/d (47,4 m3 m-2 h-1). Good results were obtained in oil/water separation which leads to the necessary specification to discharge those wastewaters. Besides, the non dependence of the efficiency of separation in spite of the salinity of the medium becomes the equipment an attractive new technology to treat wastewaters containing oil at low concentrations

Projeto cartográfico e implementação de um protótipo de atlas escolar interativo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Diagnóstico do usuário no aprimoramento dos serviços de tecnologia da informação: um projeto de intervenção para o Ministério Público do Estado do Rio Grande do Norte

The information tecnology (IT) has, over the years, gaining prominence as a strategic element and competitive edge in organizations, public or private. In the judiciary, with the implementation of actions related to Judiciário Eletrônico, information technology (IT), definitely earns its status as a strategic element and significantly raises the level of dependence of the organs of their services and products. Increasingly, the quality of services provided by IT has direct impact on the quality of services provided by the agency as a whole. The Ministério Público do Estado do Rio Grande do Norte (MPRN) deployments shares of Electronic Government, along with an administrative reform, beyond these issues raised, caused a large increase in institutional demand for products and services provided by the Diretoria de Tecnologia da Informação (DTI), a sector responsible for the provision of IT services. Taking as starting point strategic goal set by MPRN to reach a 85% level of user satisfaction in four years, we seek to propose a method that assists in meeting the goal, respecting the capacity constraints of the IT sector. To achieve the proposed objective, we conducted a work in two distinct and complementary stages. In the first step we conducted a case study in MPRN, in which, through an internal and external diagnosis of DTI, accomplished by an action of internal consulting and one research of the user satisfaction, we seek to identify opportunities of change seeking to raise the quality perceived of the services provided by the DTI , from the viewpoint of their customers. The situational report, drawn from the data collected, fostered changes in DTI, which were then evaluated with the managers. In the second stage, with the results obtained in the initial process, empirical observation, evaluation of side projects of quality improvement in the sector, and validation with the managers, of the initial model, we developed an improved process, gazing beyond the identification of gaps in service a strategy for the selection of best management practices and deployment of these, in a incremental and adaptive way, allowing the application of the process in organs with little staff allocated to the provision of information technology services

Ensino e orientação para projeto de conversores CC-CC através de aplicativos em java

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

O significado do trabalho entre os jovens na transição de estudante universitário a profissional

The present study analyses the variability of the meaning of the work among young people on the transition from university to professional life, divided according to: university levels, knowledge area and graduation course. A hundred seventeen young people answered the questionaries structured on the components of the meaning of work. Semi-structured interviews were also made with parts of the sample about the themes related to the meaning of work on this way the information of the questionaries became complete. The answers of the interviews were studied through the analysis of the thematic contents. The results of such analysis and the answers of the questionaries were registered on the data base SPSS for Windows. The results of the statistic analysis made indicated that: (1) the centrality of work and the articulations among stronger spheres do not present variability according to level, area or course; (2) the course makes more difference values factors and descriptives factors than area and level; (3) the hierarchy of values presents variability according to area and the descriptive hierarchy presents variability according to course; (4) the level makes more difference specific attributes of the meaning of the work than area and course; (5) the standards of the meaning of work do not present variability according to level, area and course, but present variability according to type of the work market evaluation and planning the future work. In summary, the meaning of work present variability according to level, area and course of the young people, when studied in facets, except for the work centrality

Sensoriamento remoto na identificação do uso e ocupação da terra na área do projeto Conquista da Água, Ilha Solteira - SP, Brasil

A cidade de Ilha Solteira está propondo o projeto Conquista da Água, visando ao desenvolvimento sustentável do Município, a partir do turismo, da cultura e da ciência e tecnologia. Para atingir esse objetivo, os planejadores do meio físico-ambiental necessitam de dados que possam auxiliá-los na seleção dos melhores locais onde serão instalados as avenidas, o aeroporto e os demais espaços que comporão esse projeto. A elaboração do mapa de uso e cobertura do solo da área de interesse do projeto constitui um dos temas necessários ao banco de dados a ser utilizado pelos planejadores. Neste trabalho, é apresentado o estado de degradação dessa área, o que auxiliará na definição das estratégias de conservação ambiental.

Projeto pedagógico: abordagens e implicações no âmbito da formação em odontologia

Proposals that aim a redirection of current health attention models in Brazil are indispensible due to the need of health issues and its challenges imposed by society. These issues come forth in Higher Education Institutions in an attempt to devise ways to face these demands. The research aims to analyze the Pedagogical Project (PP) present in the Dentistry Graduation Course in the Federal University of Rio Grande do Norte in Brazil-(UFRN). This is done in coherence the Brazilian National Curricular Guidelines considering main competences established in the PP. This research was approved by the Ethics Committee at UFRN under document number 285/201. The work is of descriptive nature and was realized with 30 students in the Dentistry Graduation Course. Interviews were realized with the use of problem situation approach. The research was also supported by documental studies that dealt with syllabus present in the disciplines taught at UFRN. Data were processed with the use of the ALCESTE 4.9 software. It is possible to acknowledge that some conservative conceptions arise, even though there is use of active methodologies and innovation that aim to promote reflection and articulation for general competence development such as proposed in the Pedagogical Project in Dentistry Graduation Course at UFRN. These conceptions are mainly present in the teaching-learning process where students do not have full participation. Thus it is possible to conclude that even though there are advances and breakthroughs. This is seen with that fact that there was inclusion of multidisciplinary clinical work as well optional courses in the curriculum. It was also seen that there was occasional use of active teaching methodologies in Dentistry at UFRN. But there is still a need for a didactical and methodological resizing. These actions require the need for progressive development of competences and abilities during the formative process according to what was established in the Brazilian National Curricular Guidelines

O estágio não-obrigatório na formação profissional dos(as) assistentes sociais: trabalho precarizado ou processo didático-pedagógico?

Coexisten, en el universo académico, prácticas curriculares obligatorias y no obligatorias que pueden ser remuneradas o no. Delante de la constatación de lagunas en la concepción, gestión y operacionalización de las prácticas no obligatorias remuneradas, escogimos este tema como objeto de nuestra investigación, tratando de analizarlo en el contexto de los cambios sociohistóricos contemporaneos y su influencia en la cualidad de la formación profesional del estudiante de la carrera de Servicio Social. Este estudio tiene como ¨locu¨ de investigación la Facultad de Servicio Social del Estado de Rio Grande del Norte (FASSO/UERN). Este estudio se caracteriza por la adopción de una perspectiva de análisis cualitativa, con la expectativa de develarlo mucho más allá de lo que se muestra en su aparecncia. Para esto, realizamos revisión de literatura, análisis de documentos, observación asistemática y entrevistas con estudiantes y profesionales de las entidades que ofrecen prácticas a los estudiantes. Además se incluyó, en los procedimientos metodológicos, la aplicación de encuestas y conversaciones informales. Constatamos la existencia de lagunas en el desarrolllo de las prácticas no obligatorias remuneradas, ocasionadas por la ausencia de supervisión y por la inclusión de pasantes en sectores y/o actividades desvinculadas de su futura profesión. La investigación nos permitió desvelar situaciones en las que la oferta de plazas ocurre en detrimento de la contratación de empleados, lo que configura un distanciamento de este componente curricular del área de formación profesional, desvirtuando su carácter educacional. Cientes de la coexistencia contradictoria entre situaciones ventajosas y problemáticas en las prácticas no obligatorias remuneradas para el proceso de formación profesional de los asistentes sociales, concluimos que esta modalidad de práctica cuando vinculada a la intervención de la facultad y bajo la supervisión de asistentes sociales, independiente de sus implicaciones en los intereses del mercado, potencializa el desarrollo de competencias y habilidades intrínsecas al proceso de formación profesional; pero si distanciada del área de formación y/o sin el debido acompañamiento didáctico-pedagógico establece poca o ninguna relación con la formación de los asistentes sociales. Pero, incluso distanciadas del ejercicio y de la formación académica en el área de servicio social y/o (llenas de aspectos frágiles) llenas de fallas en el proceso de enseñanza y aprendisaje, estas experiencias ejercen profunda influencia en la formación de los asistentes sociales, pudiendo fragilizar el compromiso con el proyecto ético-político, diseminar el aspecto subalterno de la profesión y hacer confuso y conflictivo el proceso de construcción de la identidad profesional. En este sentido, las inversiones de capital para reducir los gastos con mano de obra, las dificultades vividas por las universidades públicas brasileñas para garantizar la cualidad de la enseñanza delante de la insuficiencia de recursos humanos y materiales y la desvalorización de los componentes no obligatorios del proceso de formación profesional de los asistentes sociales, son factores que obstaculizan el reconocimiento y la materialización del potencial didáctico-pedagógico de las prácticas

Serviço Social Audit Saúde no SUS/RN: projeto ético político profissional e de reforma sanitária

Health policies in Brazil, the decentralization of SUS management responsibilities for the three spheres of government has driven the creation and regulation of the audits of health services in the National Audit Office, this is a trend of neoliberal policies imposed by international bodies like the World Bank and IMF to peripheral countries characterized by productive restructuring and reforming the state focuses on the presence of two competing projects in the area of health: Health Sector Reform Project which is based on the democratic rule of law with the assumption of health as social right and duty of the State in defending the extension of the conquest of rights and democratization of access to health care guaranteed through the public financing strategies and the effective decentralization of decisions pervaded by social control and privatized Health Project which is based on the state minimum, with a reduction in social spending or in partnerships and privatization, stronger nonprofit sector, subject to capitalist interests, is made effective through strategies targeting health policy and refilantropização actions. In this context, the present study is an analysis on the work of social audits of public health in infants from a qualitative and quantitative approach, embodied by the critical method of dialectical Marxist social theory that enabled us to unveil the characterization, the demands, challenges and outline the profile of Social Work in teams inserted audits of SUS in RN, but also provided evidence to demonstrate the prospects and possibilities of this area of activity of social workers. It was also found that through the audit work that the state fulfill its role as bureaucratic and regulator of health services with efficiency, effectiveness and economy. Yet, paradoxically, the audits of SUS may provide a vehicle for enforcing rights and ensuring the fundamental principles contained in the project of health reform, because it can be configured in a space of political struggle as representing a new field of knowledge production that needs to be appropriate for a theoretical critic able to redirect the social interests in favor of the user. From this perspective, it is concluded that the work of social audits of public health in infants despite the social relevance that prints, as they constitute an activity study of reality and its transformation proposition requires a transformative political action guided the discussion Marxist theory holds that the ethical project professional politician of Social Work

O trabalho dos assistentes sociais no âmbito hospitalar: as particularidades da sua inserção no Hospital Universitário Onofre Lopes (HUOL), em Natal/RN/

This study aimed to analyze the work of social workers at the Hospital Universitário Onofre Lopes (HUOL), with the analytical approach the contracting process with the HUOL with the National Health System (SUS), which is set from 2004. Thus, this study sought in times of state reform, restructuring and tension between enlargement / reduction of social and labor rights, understanding the limits and possibilities of social work in HUOL, analyzing how these determinations bounce in the practice of social workers included in the collective process of health work. From a theoretical and methodological historical and dialectical materialism, we conducted literature search, in which developed book report and readings of texts, articles, books that focus on the central categories of the study, namely: Work, Social Work, Health, Health Reform , Project ethical and professional politician. Operationalized also a documentary research, on the Brazilian Public Health Policy, (SUS) and of the Education, as well as research field in which we conducted interviews with 11 social workers, employees packed the HUOL. We conclude that social workers did not participate in the discussion process of contracting the HUOL with the Municipal Health Secretariat of Natal, RN, manager of health and full resetting of user access, via reference setting - counter-referral services provided by the hospital brought the main demands on Social Work guidance regarding the functionality of SUS, and the social intervention in the struggle to guarantee such access. However, the data show that the expansion of demands that require the intervention of the social worker at HUOL is not associated with quantitative growth of these professionals need. Such conditions inflect the possibilities of materialization of the professional ethical-political project, even though that these professionals worry and seek the intellectual improvement, quality of service and to guarantee the social rights of users in the professional practice everyday

Projeto criança saudável, educação dez: resultados com e sem intervenção do nutricionista

OBJETIVO: Planejar e aplicar um programa de orientação em nutrição, realizado por nutricionista e destinado a professores de 1ª a 4ª série do ensino fundamental, visando analisar a contribuição desse profissional no resultado do projeto Criança Saudável, Educação Dez quanto ao conhecimento dos escolares. MÉTODOS: O trabalho foi realizado em duas escolas públicas, A e B, nas quais foi desenvolvido o projeto educativo, sendo que na primeira os professores foram apoiados por um programa de orientação realizado por profissional nutricionista. Antes e depois do desenvolvimento do projeto educativo foi aplicado um instrumento para avaliar o conhecimento dos escolares sobre alimentação e nutrição. RESULTADOS: Os escolares da Escola A apresentaram mudança significante (p<0,01) no conhecimento de alimentação e nutrição após o desenvolvimento do projeto educativo, o que não ocorreu entre os estudantes da Escola B (p>0,05). CONCLUSÃO: Os resultados obtidos sugerem que a realização de programa de orientação, prestada por nutricionistas aos professores para desenvolverem o projeto educativo, maximizou os resultados, gerando mudança significante no conhecimento dos escolares sobre alimentação e nutrição. Tais resultados apontam a importância da capacitação do nutricionista para atuar em educação nutricional, indicando que o campo pedagógico merece aprofundamento nos cursos de graduação, de modo a permitir ao aluno e futuro profissional uma compreensão alicerçada e sólida do processo educativo.

Construir com os professores do 2º ciclo práticas letivas inovadoras: um projeto de pesquisa sobre o ensino do tema curricular 'alimentação humana'

O propósito neste texto é divulgar um projeto de investigação que foi desenvolvido com professores do 2º ciclo, no qual se utilizou uma metodologia do tipo investigação-ação. Por intermédio deste projeto foi possível avaliar o impacto do uso de estratégias do Ensino por Pesquisa (EPP), com vista ao desenvolvimento de novas competências científico-didáticas (atitudes e saberes). Tais estratégias foram desenvolvidas com base em preceitos da Nova Didática e no âmbito de um programa de formação. Os dados levantados e analisados mostraram que esse tipo de metodologia contribui para a superação de dificuldades de aprendizagem inerentes a processos de formação profissional (inicial e continuada), como a de aprender por meio do trabalho cooperativo na Escola.