Orientação exterior de imagens orbitais usando modelos rigorosos com feições retas

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Undergraduate research in medical education: a descriptive study of students' views

Background: Medical students engage in curricular and extracurricular activities, including undergraduate research (UR). The advantages, difficulties and motivations for medical students pursuing research activities during their studies have rarely been addressed. In Brazil, some medical schools have included undergraduate research into their curriculum. The present study aimed to understand the reality of scientific practice among medical students at a well-established Brazilian medical school, analyzing this context from the students' viewpoint.Methods: A cross-sectional survey based on a questionnaire applied to students from years one to six enrolled in an established Brazilian medical school that currently has no curricular UR program.Results: The questionnaire was answered by 415 students, 47.2% of whom were involved in research activities, with greater participation in UR in the second half of the course. Independent of student involvement in research activities, time constraints were cited as the main obstacle to participation. Among students not involved in UR, 91.1% said they favored its inclusion in the curriculum, since this would facilitate the development of such activity. This approach could signify an approximation between the axes of teaching and research. Among students who had completed at least one UR project, 87.7% said they would recommend the activity to students entering the course.Conclusion: Even without an undergraduate research program, students of this medical school report strong involvement in research activities, but discussion of the difficulties inherent in its practice is important to future developments.

Análise de processos de uma empresa de comércio exterior para viabilizar maior produtividade

The easy access to information has been accelerating even more business competitiveness nowadays. To turn a foreign trade company into a more competitive company by improving its services, this work aims the analysis of the Supply Chain processes to enable greater productivity. Using powerful tools of great historical success in the business world – such as Flowcharts, VSM Lean and PDCA –, a structure was created that adapted its main concepts and produced a method which enabled not only improvements on modified processes but also on the subsequent ones. Productivity data were collected, where evidence of quantitative improvements were found in the expedition macro process. Due to a process analysis theme, this paper gives also the thought about process approach, vital step to create a future Quality Management System

Barreiras comerciais e meio ambiente: o comércio exterior brasileiro diante dos regulamentos ambientais estabelecidos pela Comunidade Europeia, Estados Unidos e Japão no período de 1995-2010

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Estratégias Produtivas e Tecnológicas das empresas da Indústria Farmacêutica do Brasil e da Índia: um exame a partir de indicadores aplicados aos fluxos de comércio exterior

This work aims to evaluate the different trajectories in terms of production structure, technological capabilities and performance in international trade of pharmaceutical industries in Brazil and India. For this, we build international trade indicators, based on data provided by the COMTRADE, the UN database for trade. Through the indicators, it is observed that the countries have different results in the catch-up process of the pharmaceutical industry. India has built a productive structure strongly based on generic drugs, with which it is able to greatly meet domestic demand and export to many countries worldwide. Brazil remains in a position of dependence of foreign production, with a high level of imports and exports to the region of Latin America

Interior-exterior point method with global convergence strategy for solving the reactive optimal power flow problem

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Is the internal connection more efficient than external connection in mechanical, biological, and esthetical point of views? A systematic review

This systematic review aimed to evaluate if the internal connection is more efficient than the external connection and its associated influencing factors. A specific question was formulated according to the Population, Intervention, Control, and Outcome (PICO): Is internal connection more efficient than external connection in mechanical, biological, and esthetical point of views? An electronic search of the MEDLINE and the Web of Knowledge databases was performed for relevant studies published in English up to November 2013 by two independent reviewers. The keywords used in the search included a combination of dental implant and internal connection or Morse connection or external connection. Selected studies were randomized clinical trials, prospective or retrospective studies, and in vitro studies with a clear aim of investigating the internal and/or external implant connection use. From an initial screening yield of 674 articles, 64 potentially relevant articles were selected after an evaluation of their titles and abstracts. Full texts of these articles were obtained with 29 articles fulfilling the inclusion criteria. Morse taper connection has the best sealing ability. Concerning crestal bone loss, internal connections presented better results than external connections. The limitation of the present study was the absence of randomized clinical trials that investigated if the internal connection was more efficient than the external connection. The external and internal connections have different mechanical, biological, and esthetical characteristics. Besides all systems that show proper success rates and effectiveness, crestal bone level maintenance is more important around internal connections than external connections. The Morse taper connection seems to be more efficient concerning biological aspects, allowing lower bacterial leakage and bone loss in single implants, including aesthetic regions. Additionally, this connection type can be successfully indicated for fixed partial prostheses and overdenture planning, since it exhibits high mechanical stability.

Gestão das línguas no século XXI: para uma introdução à política linguística exterior

The objective of this work is to stimulate a debate about the idea of a possible foreign language policy. It seeks to do so from an overview of the structural changes of recent decades - those affecting the economy, information and communication technologies, geopolitics and identities - in order to draw attention to the renewed importance and the role that the language management issues are assuming in this new context. Considering the foreign language policy a theoretical and practical essential tool for the management of language in a globalized world, the focus of the discussion rests on four main aspects: the origins of the notion of foreign language policy; the relationship with the foreign policy of the State; its effectiveness through the intervention on corpus, status and acquisition of the language; and the possibility of their formulation by agents other than the State

Gestão das línguas no século XXI: para uma introdução à política linguística exterior

The objective of this work is to stimulate a debate about the idea of a possible foreign language policy. It seeks to do so from an overview of the structural changes of recent decades - those affecting the economy, information and communication technologies, geopolitics and identities - in order to draw attention to the renewed importance and the role that the language management issues are assuming in this new context. Considering the foreign language policy a theoretical and practical essential tool for the management of language in a globalized world, the focus of the discussion rests on four main aspects: the origins of the notion of foreign language policy; the relationship with the foreign policy of the State; its effectiveness through the intervention on corpus, status and acquisition of the language; and the possibility of their formulation by agents other than the State

Produção Científica em Turismo: análise de estudos referenciais no exterior e no Brasil

Pesquisa documental, de caráter exploratório, que descreve e analisa os enfoques e resultados de um conjunto de estudos sobre a produção científica em Turismo no exterior e no Brasil, com base em levantamento bibliográfico e análise de conteúdo. Com o objetivo de discutir a relevância e o estágio evolutivo do conhecimento turístico, apresenta uma amostra de estudos referenciais sobre o tema no exterior e mapeia 24 estudos produzidos nessa temática no Brasil de 1993 a 2008, destacando diferentes objetivos, objetos de estudo, metodologias e resultados. A maioria das pesquisas no exterior apresenta-se como quantitativa, centra-se em periódicos científicos e destaca-se pelo referencial teórico e a metodologia adotada. No Brasil, embora a maioria das pesquisas privilegie as dissertações e teses acadêmicas enquanto objeto de estudo há maior diversidade deste; nota-se, porém, certo distanciamento em relação ao referencial teórico e metodológico dos estudos do exterior.

An in vitro comparison of subjective image quality of panoramic views acquired via 2D or 3D imaging

Objectives: The objective of this study is to compare subjective image quality and diagnostic validity of cone-beam CT (CBCT) panoramic reformatting with digital panoramic radiographs. Materials and methods: Four dry human skulls and two formalin-fixed human heads were scanned using nine different CBCTs, one multi-slice CT (MSCT) and one standard digital panoramic device. Panoramic views were generated from CBCTs in four slice thicknesses. Seven observers scored image quality and visibility of 14 anatomical structures. Four observers repeated the observation after 4 weeks. Results: Digital panoramic radiographs showed significantly better visualization of anatomical structures except for the condyle. Statistical analysis of image quality showed that the 3D imaging modalities (CBCTs and MSCT) were 7.3 times more likely to receive poor scores than the 2D modality. Yet, image quality from NewTom VGi® and 3D Accuitomo 170® was almost equivalent to that of digital panoramic radiographs with respective odds ratio estimates of 1.2 and 1.6 at 95% Wald confidence limits. A substantial overall agreement amongst observers was found. Intra-observer agreement was moderate to substantial. Conclusions: While 2D-panoramic images are significantly better for subjective diagnosis, 2/3 of the 3D-reformatted panoramic images are moderate or good for diagnostic purposes. Clinical relevance: Panoramic reformattings from particular CBCTs are comparable to digital panoramic images concerning the overall image quality and visualization of anatomical structures. This clinically implies that a 3D-derived panoramic view can be generated for diagnosis with a recommended 20-mm slice thickness, if CBCT data is a priori available for other purposes.