O museu das bandeiras - muban da cidade de goiás- brasil: espaços não formais na educação em ciências

Partindo da compreensão de que o ensino não deve ficar preso a uma única metodologia, e da necessidade de atender aos diferentes processos de aprendizagens, a formação de professores deve contemplar estas diferenças e acontecer em múltiplos espaços. Assim, o professor adquire saberes relativos à profissão que lhe possibilitem desenvolver diferentes ações. Nessa linha de pensamento, procuramos potencializar os Museus, numa perspectiva de uma formação profissional e de estratégias de ensino de conteúdos científicos. O Museu das Bandeiras, na cidade de Goiás –GO, é o espaço não formal em foco, que permite em meio as abordagens históricas apresentadas no mesmo levantar conteúdos e relações com o conhecimento cientifico e cultural para cada parada temática e ambiente disponível

Photonic crystal-driven spectral concentration for upconversion photovoltaics

International audienceThe main challenge for applying upconversion (UC) to silicon photovoltaics is the limited amount of solar energy harvested directly via erbium-based upconverter materials (24.5 W m(-2)). This could be increased up to 87.7 W m(-2) via spectral concentration. Due to the nonlinear behavior of UC, this could increase the best UC emission by a factor 13. In this paper, the combined use of quantum dots (QDs)for luminescent down-shiftingand photonic crystals (PCs)for reshaping the emissionto achieve spectral concentration is shown. This implies dealing with the coupling of colloidal QDs and PC at the high-density regime, where the modes are shifted and broadened. In the first fabricated all-optical devices, the spectral concentration rises by 67%, the QD emission that matches the absorption of erbium-based upconverters increases by 158%, and the vertical emission experiences a 680% enhancement. Remarkably, the PC redshifts the overall emission of the QDs, which could be used to develop systems with low reabsorption losses. In light of this, spectral concentration should be regarded as one of the main strategies for UC photovoltaics

Towards guidelines for building a business case and gathering evidence of software reference architectures in industry

Background: Software reference architectures are becoming widely adopted by organizations that need to support the design and maintenance of software applications of a shared domain. For organizations that plan to adopt this architecture-centric approach, it becomes fundamental to know the return on investment and to understand how software reference architectures are designed, maintained, and used. Unfortunately, there is little evidence-based support to help organizations with these challenges. Methods: We have conducted action research in an industry-academia collaboration between the GESSI research group and everis, a multinational IT consulting firm based in Spain. Results: The results from such collaboration are being packaged in order to create guidelines that could be used in similar contexts as the one of everis. The main result of this paper is the construction of empirically-grounded guidelines that support organizations to decide on the adoption of software reference architectures and to gather evidence to improve RA-related practices. Conclusions: The created guidelines could be used by other organizations outside of our industry-academia collaboration. With this goal in mind, we describe the guidelines in detail for their use.Peer ReviewedPostprint (published version

Sudden Death Circadian Rhythm in Chagasic Patients Compared to Non-Chagasic Patients

Chagas disease (Ch) affects 8–10 million people in Latin America. Sudden death is the major cause of death in patients with Ch. Objective: To compare the circadian rhythm of sudden death in Ch vs. non-Ch patients. Methods: Retrospective analysis of all the cases of sudden death (SD) is recorded in our department, including autopsied patients from 1963 until 2011. Pattern of death of 266 patients (116 Ch and 146 non-Ch), 56.7% men, average age 54, 6 years old, divided into four groups: Group A: Ch with SD (n = 38), Group B: non-Ch with SD (n = 58), Group C: Ch with non-SD (n = 81), and Group D: non-Ch with non-SD (n = 89). Results: 44.7% (17/38) of sudden deaths in Group A (Ch) occurred between 6 am and 5:59 pm, while for Group B (not Ch) 70.7% (41/58) died in that time (p < 0.005). Between 6 pm and 5:59 am occurred 55.3% (21/38) of the SD in Group A (Ch) compared with 29.3% (17/58) in Group B (p < 0.005). Conclusions: Circadian rhythm of SD in patient with Ch differs from those patients with non-CH. In CH patients, SD occurs predominantly during the night compared with non-Ch SD that occurs predominantly during the morning

PHYTOTHERAPY IN DENTISTRY: SURVEY OF PRODUCTS OF PLANT ORIGIN FOR HEALTH ORAL

Introduction: The National Policy of Integrative and Complementary Practices (PNPIC), of the Ministry of Health, inserts the use of medicinal plants and herbal medicine in the Unified Health System (SUS) and was the recognized practice of herbal medicine by the dentist regulated in 2008. by the Federal Council of Dentistry. However, for dentistry, this therapeutic option is still little used. Objectives: The aim of this study was to review and systematize data from the scientific literature on products of plant origin indicated for dentistry, contributing to promote their use by dentists. Methodology: The Medline and BIREME indexing bases on the theme of phytotherapics in dentistry were searched. 230 articles were found and 15 were selected, based on the impact factor of the publications. Conclusions: The difficulties of the use of Phytotherapy in the clinical routine are related to several aspects, such as the lack of qualification of professionals, difficulty of access to phytotherapeutic plants, cost, among others.Introduction: The National Policy of Integrative and Complementary Practices (PNPIC), of the Ministry of Health, inserts the use of medicinal plants and herbal medicine in the Unified Health System (SUS) and was the recognized practice of herbal medicine by the dentist regulated in 2008. by the Federal Council of Dentistry. However, for dentistry, this therapeutic option is still little used. Objectives: The aim of this study was to review and systematize data from the scientific literature on products of plant origin indicated for dentistry, contributing to promote their use by dentists. Methodology: The Medline and BIREME indexing bases on the theme of phytotherapics in dentistry were searched. 230 articles were found and 15 were selected, based on the impact factor of the publications. Conclusions: The difficulties of the use of Phytotherapy in the clinical routine are related to several aspects, such as the lack of qualification of professionals, difficulty of access to phytotherapeutic plants, cost, among others

OpenCL-Accelerated Simplified General Perturbations 4 Algorithm

The number of space objects such as satellites, spacecraft, and debris are increasing significantly, and so is the need for tracking them for security and collision avoidance purposes. In this context, as parallelism is becoming a new paradigm, the need of implementing high performance propagators remain unmet. For this, we implemented Simplified General Perturbations No. 4 (SGP4), a popular analytical orbital propagator, in OpenCL. OpenCL is a rising high performance and heterogeneous computation paradigm aimed to take the best of the processing elements on a given platform, in a paral- lel fashion, regardless of the underlying architecture. Despite some considerations had to be taken, we prove that our develop- ment shows no significant calculation differences, while not only being hardware independent, but also boosting the performance notably by two orders of magnitude in several scenarios.Sociedad Argentina de Informática e Investigación Operativ

OpenCL-Accelerated Simplified General Perturbations 4 Algorithm

The number of space objects such as satellites, spacecraft, and debris are increasing significantly, and so is the need for tracking them for security and collision avoidance purposes. In this context, as parallelism is becoming a new paradigm, the need of implementing high performance propagators remain unmet. For this, we implemented Simplified General Perturbations No. 4 (SGP4), a popular analytical orbital propagator, in OpenCL. OpenCL is a rising high performance and heterogeneous computation paradigm aimed to take the best of the processing elements on a given platform, in a paral- lel fashion, regardless of the underlying architecture. Despite some considerations had to be taken, we prove that our develop- ment shows no significant calculation differences, while not only being hardware independent, but also boosting the performance notably by two orders of magnitude in several scenarios.Sociedad Argentina de Informática e Investigación Operativ

GLOrbit: A 3D satellite orbit propagator for network topology analysis

Traditional networking protocols were developed for earth-based networks characterized by highly static topologies. In this scenario, erratic link failures were the most demanding change a network configuration could face. In the other hand, mobile networking protocols copes with dynamic topologies but assumes unknown trajectories and high connectivity. Neither of these applies to satellite constellations network paradigmwhere their orbiting nature describes a time-varying but highly predictive topology. To study satellite constellations networks we propose GLOrbit; a tool capable of propagate space nodes in time, create a 3D visual environment, and record the topology in different formats for further analytical studies. For this we implemented SGP4 propagation algorithm, OpenGL graphic library, and DOT language among other libraries interacting in a C++ program. This allows to obtain precise outputs for network graph and physical analysis while gaining visual intuition on satellite networks topologies for different orbital configurations. We demonstrate the tool capabilities with a first work on three representative low earth orbit topologies analysis generated by GLOrbit. Lineal, transversal, and different altitude scenarios are studied concluding that the first evidence an important strength in inter-satellite links while the second on ground to space contacts.Fil: Fraire, Juan Andrés. Universidad Nacional de Córdoba; Argentina.Fil: Ferreyra, Pablo. Universidad Nacional de Córdoba; Argentina.Fil: Marques, Carlos. Universidad Nacional de Córdoba; Argentina.Ingeniería Eléctrica y Electrónic

Patellofemoral osteoarthritis: how do patients behave?

Background: Patellofemoral osteoarthritis is detected in a large number of patients and is responsible for multiple symptoms and signs, among which pain predominates, its treatment is varied and ranges from conservative to surgical, in which the arthroscopic route stands out. Objective: Show the behavior of a group of patients with patellofemoral osteoarthritis. Material and methods: A descriptive observational study was carried out in 96 patients with the clinical and radiographic diagnosis of patellofemoral osteoarthritis from January 2015 to April 2017. The non-probabilistic and intentional sample consisted of 77 patients who met the selection criteria (inclusion and exclusion). Results: The average age was 52.2 years, the female sex, the right kneecap predominated and the cause that was most observed was primary.&nbsp;Pain during rest is one of its main manifestations.&nbsp;There is a correlation between the Iwano T and Outerbridge RE classification.&nbsp;In general, there are other affected compartments of the joint, the isolated presence is very rare, and arthroscopic treatment is very useful. Conclusions: Patellofemoral osteoarthritis is frequent, it generates symptoms and signs in a large group of patients.&nbsp;The presence of this condition is usually associated with other joint injuries, and patients can be treated arthroscopically.Background: Patellofemoral osteoarthritis is detected in a large number of patients and is responsible for multiple symptoms and signs, among which pain predominates, its treatment is varied and ranges from conservative to surgical, in which the arthroscopic route stands out. Objective: Show the behavior of a group of patients with patellofemoral osteoarthritis. Material and methods: A descriptive observational study was carried out in 96 patients with the clinical and radiographic diagnosis of patellofemoral osteoarthritis from January 2015 to April 2017. The non-probabilistic and intentional sample consisted of 77 patients who met the selection criteria (inclusion and exclusion). Results: The average age was 52.2 years, the female sex, the right kneecap predominated and the cause that was most observed was primary. Pain during rest is one of its main manifestations. There is a correlation between the Iwano T and Outerbridge RE classification. In general, there are other affected compartments of the joint, the isolated presence is very rare, and arthroscopic treatment is very useful. Conclusions: Patellofemoral osteoarthritis is frequent, it generates symptoms and signs in a large group of patients. The presence of this condition is usually associated with other joint injuries, and patients can be treated arthroscopically

Do happiness indexes truly reveal happiness? : measurin happiness using revealed preferences from migration flows

In this paper we attempt to establish a nexus between migration decisions and selfassessed happiness, where migration is taken as a mechanism for revealing preferences. The happiness literature has proposed both economic and non-economic determinants of happiness which are very similar to the factors that may be thought of as determinants of migration: absolute income, relative income, demographic and social characteristics, social development, relationship with others and characteristics of the place where we live. To these we add bilateral gravity variables, migration policies, and two survey-based happiness indexes. First, these two indexes are negatively correlated to net migration flows. Second, almost all the other explanatory variables are significant and as such survey-based happiness indexes fail to account for them. Third, we show how an international happiness ranking changes by taking into account those omitted factors. Finally, our migration-based ranking shows that, although many countries "truthfully" reveal happiness levels, in fact 19 countries are net migration senders even though they are self-proclaimed happy in surveys, whereas 23 countries are net migration recipients, even though in surveys they are self-proclaimed unhappy. We identify the sources of this mismatch and suggest where action could be taken to bring people’s self-assessment of happiness in line with revealed preference