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Desempenho acadêmico de alunos que se submeteram a tratamento psiquiátrico no serviço de saúde mental para estudantes de uma universidade brasileira
Full text linkUniversity students are generally at the typical age of onset of mental disorders that may affect their academic performance. We aimed to characterize the university students attended by psychiatrists at the students’ mental health service (SAPPE) and to compare their academic performance with that of non-patient students. Cross-sectional study based on review of medical files and survey of academic data at a Brazilian public university. Files of 1,237 students attended by psychiatrists at SAPPE from 2004 to 2011 were reviewed. Their academic performance coefficient (APC) and status as of July 2015 were compared to those of a control group of 2,579 non-patient students matched by gender, course and year of enrolment. 37% of the patients had had psychiatric treatment and 4.5% had made suicide attempts before being attended at SAPPE. Depression (39.1%) and anxiety disorders/phobias (33.2%) were the most frequent diagnoses. Severe mental disorders such as psychotic disorders (3.7%) and bipolar disorder (1.9%) were less frequent. Compared with non-patients, the mean APC among the undergraduate patients was slightly lower (0.63; standard deviation, SD: 0.26; versus 0.64; SD: 0.28; P = 0.025), but their course completion rates were higher and course abandonment rates were lower. Regarding postgraduate students, patients and non-patients had similar completion rates, but patients had greater incidence of discharge for poor performance and lower dropout rates. Despite the inclusion of socially vulnerable people with severe mental disorders, the group of patients had similar academic performance, and in some aspects better, than, that of non-patients.13512328Estudantes universitários geralmente estão na faixa etária típica do início de transtornos mentais que podem afetar seu desempenho acadêmico. Tivemos como objetivos caracterizar os estudantes atendidos por psiquiatras em serviço universitário de saúde mental para alunos (SAPPE) e comparar seu desempenho acadêmico com o de alunos não pacientes. Estudo transversal baseado em revisão de prontuários e levantamento de dados acadêmicos em uma universidade pública brasileira. Prontuários de 1.237 estudantes assistidos por psiquiatras do SAPPE entre 2004 e 2011 foram revisados. Seu coeficiente de rendimento (CR) e status acadêmicos em julho de 2015 foram levantados e comparados aos de um grupo de controle com 2.579 alunos não pacientes, pareados por sexo, curso e ano de matrícula. 37% dos pacientes tiveram acompanhamento psiquiátrico e 4,5% fizeram tentativas de suicídio prévios ao atendimento pelo serviço. Os diagnósticos mais frequentes foram depressão (39,1%) e transtornos fóbico-ansiosos (33,2%). Transtornos mentais graves, como o psicótico (3,7%) e o bipolar (1,9%), foram menos frequentes. Entre os pacientes dos cursos de graduação, o CR médio foi levemente inferior (0,63; desvio padrão, DP: 0,26; versus 0,64; DP: 0,28; P = 0,025) que o de não pacientes, mas suas taxas de conclusão do curso foram maiores e as de evasão, menores. Na pós-graduação, as taxas de conclusão foram semelhantes, mas pacientes tiveram maior frequência de desligamento por baixo desempenho acadêmico e menor de desistência. Mesmo incluindo pessoas socialmente vulneráveis e com transtornos mentais graves, o grupo de pacientes teve desempenho acadêmico semelhante e, em alguns aspectos melhor, do que o de não pacientes
The state and prospects of renewable energy in Cuba
No full textCuba is a nation with a high dependence on imported energy. About 53% of its energy is supplied by imported fuels. On the other hand, its location in the Caribbean Sea offers excellent geographical features for efficient exploitation of renewable energy resources. This article details the state of renewable energy development in Cuba, in terms of its sources, utilization, prospects and energy policy. At present, renewable energy in exploitation reaches around 2.042 million tonnes of oil equivalent, which is about 54.5% of Cuban annual crude oil production in 2009, and a total installed capacity of 400 MW, contributing about 4% of the national electricity generation. The main energy sources are concentrated in biomass (99.3%), followed by hydroelectric energy (0.6%), and in lesser proportions solar energy (photovoltaic and thermal; 0.06%) and wind energy (0.04%). The relevant points of the Renewable Energy Development Plan 2010–2030 include: the implementation of research and development projects on renewable energy technologies, infrastructure and technological capacities, development of human resources, use of different financing models, and encouragement of private sector investment Also, the Cuban government announced its desire to reach a goal of 2,075 MW installed from renewable energy by 2030, which will cover approximately 24% of the national electrical energy production11211111
Plato. Hippias Major
Full text linksem informaçãoTrata-se de tradução do Hípias Maior de Platão para o Português, com algumas notas de elucidação e justificação das opções.26sem informaçãosem informaçãosem informaçã
Socialism, social struggles and the new way of life in Latin America
Full text linksem informaçãoO objetivo deste texto é refletir sobre a experiência recente do socialismo com o olhar voltado para a América Latina. Se ao longo do século XX, a tese do “socialismo em um só país” sofreu uma derrota profunda, mesmo em seu espaço ampliado de8322122226sem informaçãosem informaçãosem informaçã
Reduction of blood nitric oxide levels is associated with clinical improvement of the chronic pelvic pain related to endometriosis
Full text linkThe objective of this prospective study was to determine the plasma levels of nitric oxide (NO) in women with chronic pelvic pain secondary to endometriosis (n=24) and abdominal myofascial pain syndrome (n=16). NO levels were measured in plasma collected before and 1 month after treatment. Pretreatment NO levels (μM) were lower in healthy volunteers (47.0±12.7) than in women with myofascial pain (64.2±5.0, P=0.01) or endometriosis (99.5±12.9, P<0.0001). After treatment, plasma NO levels were reduced only in the endometriosis group (99.5±12.9 vs 61.6±5.9, P=0.002). A correlation between reduction of pain intensity and reduction of NO level was observed in the endometriosis group [correlation = 0.67 (95%CI = 0.35 to 0.85), P<0.0001]. Reduction of NO levels was associated with an increase of pain threshold in this group [correlation = -0.53 (-0.78 to -0.14), P<0.0001]. NO levels appeared elevated in women with chronic pelvic pain diagnosed as secondary to endometriosis, and were directly associated with reduction in pain intensity and increase in pain threshold after treatment. Further studies are needed to investigate the role of NO in the pathophysiology of pain in women with endometriosis and its eventual association with central sensitization.484363369CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQSem informaçã
Update on ultraviolet A and B radiation generated by the sun and artificial lamps and their effects on skin
No full textSolar radiation, especially ultraviolet A (UVA) and ultraviolet B (UVB), can cause damage to the human body, and exposure to the radiation may vary according to the geographical location, time of year and other factors. The effects of UVA and UVB radiation on organisms range from erythema formation, through tanning and reduced synthesis of macromolecules such as collagen and elastin, to carcinogenic DNA mutations. Some studies suggest that, in addition to the radiation emitted by the sun, artificial sources of radiation, such as commercial lamps, can also generate small amounts of UVA and UVB radiation. Depending on the source intensity and on the distance from the source, this radiation can be harmful to photosensitive individuals. In healthy subjects, the evidence on the danger of this radiation is still far from conclusive.37436637
Lymphatic function in the early postoperative period of breast cancer has no short-term clinical impact
No full textTo evaluate by lymphoscintigraphy the lymphatic function in the preoperative period up to 2 months after surgery for breast cancer, and the relationship between the lymphatic function with clinical features and physical complications. Methods: One hundred and five women were studied before and 2 months after surgery to treat breast cancer. On each occasion, inspection and palpation of surgical wound, upper limb circumference, and lymphoscintigraphy were performed. Lymphatic function analysis consisted of velocity of axillary lymph node (LN) visualization; intensity of LN uptake; collateral circulation; dermal backflow; and hepatic uptake. Results: In the postoperative period, there was a significant worsening of the degree of LN uptake (p = 0.0003) and in the velocity of LN visualization (p = 0.01). No significant differences in dermal backflow (p = 0.4) and collateral circulation (p = 0,07) were observed. There was a significant increase in liver absorption (p = 0.0002). 37.1% of the patients developed seroma, 11.2% dehiscence, and 25.8% infection. No relationship was found between lymphoscintigraphy changes and postoperative complications or clinical characteristics. Conclusion: Lymphoscintigraphy, performed 60 days post surgery for breast cancer, can detect a worsening in lymphatic drainage and some sign of lymphatic changes. These changes are not related to clinical characteristics and physical complications14422022
Deep neural networks under stress
No full textIn recent years, deep architectures have been used for transfer learning with state-of-the-art performance in many datasets. The properties of their features remain, however, largely unstudied under the transfer perspective. In this work, we present an extensive analysis of the resiliency of feature vectors extracted from deep models, with special focus on the trade-off between performance and compression rate. By introducing perturbations to image descriptions extracted from a deep convolutional neural network, we change their precision and number of dimensions, measuring how it affects the final score. We show that deep features are more robust to these disturbances when compared to classical approaches, achieving a compression rate of 98.4%, while losing only 0.88% of their original score for Pascal VOC 2007CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ8,248/9123rd IEEE International Conference on Image Processing (ICIP
Methodology, modeling and simulation for analyzing the processing capacity of a cloud-based reservation system
No full textOrientadores: Paulo Sérgio Martins Pedro, Edson Luiz UrsiniTese (doutorado) - Universidade Estadual de Campinas, Faculdade de TecnologiaResumo: Nos últimos anos tem-se observado um aumento no volume em consultas de dados e na solicitação de serviços dos mais diversos tipos de sistemas disponíveis, e essas demandas também incluem sistemas de reservas baseados em nuvem. Esses sistemas atendem a um grande número de solicitações e podem atingir milhões de usuários espalhados pelo mundo. As falhas de tais sistemas podem representar um risco relativamente alto, com consequências financeiras, econômicas ou até mesmo sociais. Uma maneira de mitigar essas preocupações é desenvolver modelos de simulação por eventos discretos. O presente trabalho apresenta uma metodologia, modelos analíticos e de simulação para planejamento, análise e validação de um sistema de reservas baseado em nuvem. A metodologia considera o modelo computacional, o modelo de tráfego de dados, o modelo analítico, o modelo de simulação e a validação desses modelos. Além da metodologia, este trabalho apresenta um caso prático de modelos analíticos e de simulação a fim de avaliar o tempo médio de processamento e capacidade de utilização do servidor associado a seus gargalos considerando o servidor, o canal de disco e os arquivos de disco. Adicionalmente este trablaho apresenta a modelagem e simulação para avaliar os tempos de espera das mensagens no sistema até a resposta para o usuário e o tempo de espera das mensagens no armazenamento central até a saída do sistema, além de avaliar a quantidade de blocos de memória necessários de acordo com o número de mensagens. Esta abordagem utiliza-se de medições, do modelo analítico aproximado, de modelos de simulação e até de uma mistura de modelo de simulação-analítico, sendo que um modelo valida o outro. Uma vez validados, os modelos são analisados considerando outras distribuições de probabilidade\ (pois em casos reais, com novas medidas, e / ou maior conhecimento do sistema real, outras distribuições podem / devem ser mais adequadas)Abstract: In recent years, there has been an increase in the volume of data queries and service requests for the most diverse types of systems available, and these demands also include cloud-based reservation systems. These systems handle a large number of requests and can reach millions of users around the world. Failures of such systems can represent a relatively high risk, with financial, economic or even social consequences. One way to mitigate these concerns is to develop discrete event simulation models. This work presents the methodology, analytical and simulation models for planning, analyzing and validating a cloud-based reservation system. The methodology considers the computational model, the data traffic model, the analytical model, the simulation model and the validation of these models. In addition to the methodology, this work presents a practical case of analytical and simulation models in order to evaluate the average processing time and capacity of the server associated with its bottlenecks considering the server, the disk channel and the disk files. Additionally this work presents the modeling and simulation to evaluate the waiting times of the messages in the system until the reply to the user and the waiting time of the messages in the central storage until the system leaves, besides evaluating the number of memory blocks needed according to the number of messages. This approach uses measurements, the approximate analytical model, simulation models and even a mixture of simulation-analytical model, one model validating the other. Once validated, the models are analyzed considering other probability distributions \ (since in real cases, with new measures, and / or greater knowledge of the real system, other distributions may / should be more appropriate)DoutoradoSistemas de Informação e ComunicaçãoDoutor em Tecnologia001CAPE
Does renal denervation fit all resistant hypertension? the role of genetics
No full textSem informação18216116