Design and modeling of a hybrid database schema: transactional and analytical

Os sistemas de bases de dados em contexto organizacional estão segmentados em duas categorias: bases de dados operacionais e bases de dados analíticas. Como consequência da constante evolução tecnológica, vários esforços foram levados a cabo com o objetivo de reavaliar o paradigma atual. Assim, a conceção de bases de dados híbridas capazes de suportar o processamento transacional e analítico é vista como possível e viável. No entanto, é clara a presença de uma lacuna no que diz respeito à existência de abordagens que demonstrem como modelar esquemas conceptuais para este tipo de bases de dados. Neste póster é apresentada uma conceção e modelação de um esquema lógico de uma base de dados híbrida.Database systems in organizational context are segmented in two categories: operational databases and analytical databases. Several efforts have been undertaken to re-evaluate the current paradigm, based on the constant technological evolution. Thus, the design of hybrid databases, capable of supporting transactional and analytical processing is possible and feasible. Even so, it is clear a gap about the existence of approaches regarding the modelling of conceptual schema for this type of databases. In this poster, is presented a logical schema for a hybrid database.(undefined)info:eu-repo/semantics/publishedVersio

Symbolic Knowledge Extraction from Trained Neural Networks Governed by Lukasiewicz Logics

This work describes a methodology to extract symbolic rules from trained neural networks. In our approach, patterns on the network are codified using formulas on a Lukasiewicz logic. For this we take advantage of the fact that every connective in this multi-valued logic can be evaluated by a neuron in an artificial network having, by activation function the identity truncated to zero and one. This fact simplifies symbolic rule extraction and allows the easy injection of formulas into a network architecture. We trained this type of neural network using a back-propagation algorithm based on Levenderg-Marquardt algorithm, where in each learning iteration, we restricted the knowledge dissemination in the network structure. This makes the descriptive power of produced neural networks similar to the descriptive power of Lukasiewicz logic language, minimizing the information loss on the translation between connectionist and symbolic structures. To avoid redundance on the generated network, the method simplifies them in a pruning phase, using the "Optimal Brain Surgeon" algorithm. We tested this method on the task of finding the formula used on the generation of a given truth table. For real data tests, we selected the Mushrooms data set, available on the UCI Machine Learning Repository

Childhood Obesity Determinants of Childhood Overweight

Introduction The number of obese children has grown exponentially in the recent decades, which has been the subject of concern byseveral entities, health care and education. Thus we performed a framework, in theoretical terms, the concept of childhood obesity and its relationship with risk factors / protective, eating habits, physical activity and sedentary lifestyle, also recent studies with conclusions that are later confronted. Method Considering the issue under study, the participants in this study are children (n = 1424) born in the years 2006, 2007 and 2008, aged between 3 and 6 years enrolled in 2011–2012 school year in kindergartens districts of Viseu, Leiria, Évora and Vila Real - Portugal

Regular Physical Exercise as a Strategy to Improve Antioxidant and Anti-Inflammatory Status: Benefits in Type 2 Diabetes Mellitus

Over the last 30 years the combination of both a sedentary lifestyle and excessive food availability has led to a significant increase in the prevalence of obesity and aggravation of rates of metabolic syndrome and type 2 diabetes mellitus (T2DM). Several lines of scientific evidence have been demonstrating that a low level of physical activity and decreased daily energy expenditure leads to the accumulation of visceral fat and, consequently, the activation of the oxidative stress/inflammation cascade, which underlies the development of insulin resistant T2DM and evolution of micro, and macrovascular complications. This paper focuses on the pathophysiological pathways associated with the involvement of oxidative stress and inflammation in the development of T2DM and the impact of regular physical exercise (training) as a natural antioxidant and anti-inflammatory strategy to prevent evolution of T2DM and its serious complications

Opportunities and limitations of crop phenotyping in southern european countries

ReviewThe Mediterranean climate is characterized by hot dry summers and frequent droughts. Mediterranean crops are frequently subjected to high evapotranspiration demands, soil water deficits, high temperatures, and photo-oxidative stress. These conditions will become more severe due to global warming which poses major challenges to the sustainability of the agricultural sector in Mediterranean countries. Selection of crop varieties adapted to future climatic conditions and more tolerant to extreme climatic events is urgently required. Plant phenotyping is a crucial approach to address these challenges. High-throughput plant phenotyping (HTPP) helps to monitor the performance of improved genotypes and is one of the most effective strategies to improve the sustainability of agricultural production. In spite of the remarkable progress in basic knowledge and technology of plant phenotyping, there are still several practical, financial, and political constraints to implement HTPP approaches in field and controlled conditions across the Mediterranean. The European panorama of phenotyping is heterogeneous and integration of phenotyping data across different scales and translation of “phytotron research” to the field, and from model species to crops, remain major challenges. Moreover, solutions specifically tailored to Mediterranean agriculture (e.g., crops and environmental stresses) are in high demand, as the region is vulnerable to climate change and to desertification processes. The specific phenotyping requirements of Mediterranean crops have not yet been fully identified. The high cost of HTPP infrastructures is a major limiting factor, though the limited availability of skilled personnel may also impair its implementation in Mediterranean countries. We propose that the lack of suitable phenotyping infrastructures is hindering the development of new Mediterranean agricultural varieties and will negatively affect future competitiveness of the agricultural sector. We provide an overview of the heterogeneous panorama of phenotyping within Mediterranean countries, describing the state of the art of agricultural production, breeding initiatives, and phenotyping capabilities in five countries: Italy, Greece, Portugal, Spain, and Turkey. We characterize some of the main impediments for development of plant phenotyping in those countries and identify strategies to overcome barriers and maximize the benefits of phenotyping and modeling approaches to Mediterranean agriculture and related sustainabilityinfo:eu-repo/semantics/publishedVersio

Oropouche virus: clinical, epidemiological, and molecular aspects of a neglected orthobunyavirus.

Oropouche virus (OROV) is an important cause of arboviral illness in Latin American countries, more specifically in the Amazon region of Brazil, Venezuela and Peru, as well as in other countries such as Panama. In the past decades, the clinical, epidemiological, pathological, and molecular aspects of OROV have been published and provide the basis for a better understanding of this important human pathogen. Here, we describe the milestones in a comprehensive review of OROV epidemiology, pathogenesis, and molecular biology, including a description of the first isolation of the virus, the outbreaks during the past six decades, clinical aspects of OROV infection, diagnostic methods, genome and genetic traits, evolution, and viral dispersal

Treatment of injuries in emergency departments: characteristics of victims and place of injury, São Paulo State, Brazil, 2005

O objetivo deste estudo foi analisar as características e local de ocorrência dos atendimentos decorrentes de causas externas em unidades de emergência. Foram analisados 35.107 atendimentos, realizados em três unidades de emergência do Estado de São Paulo, Brasil, em 2005. Entre os resultados, a maioria das vítimas foi do sexo masculino (59,1%) e da faixa etária de 0 a 29 anos (62,1%). As causas mais freqüentes foram quedas (39,3%) e impacto acidental (16,5%). Na residência ocorreram 64,7% dos casos e na via pública 19,9%. Agressões foram mais freqüentes na via pública. Nas residências há maior probabilidade das mulheres sofrerem lesões que os homens (OR = 0,51; IC95%: 0,48-0,53). Na via pública, a probabilidade dos homens virem a ser vítimas de lesões é 1,34 vez a das mulheres, nos bares é 3,22 vezes, no local de trabalho é 2,82 vezes. Maior proporção de eventos em residências foi observada para as faixas de 0 a 9 anos e de 60 anos e mais. Esses resultados ressaltam a residência como importante local de ocorrência de lesões, devendo ser objeto de programas de prevenção específicos.The objective of this study was to analyze the characteristics and place of occurrence of injuries treated in emergency departments. A total of 35,107 emergency department visits for injuries were analyzed, excluding traffic injuries, in São Paulo State, Brazil, 2005. The majority of victims were male (59.1%), and from 0 to 29 years of age (62.1%). Leading causes were falls (39.3%) and accidental blows (16.5%). Most injuries occurred in the home (64.7%), followed by public places (19.9%). Assaults were more frequent in public. Women were more likely to suffer injuries at home, as compared to men (OR = 0.51; 95%CI: 0.48-0.53). Men were 1.34 times more likely to be injured in public places, 3.22 times in bars, and 2.82 times in the workplace. A higher proportion of events among children aged 0 to 9 and individuals 60 years or older occurred at home. The results highlighted the home as an important place for the occurrence of injuries, which should be considered when planning injury prevention programs.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Modelling fiber flow in fiberboard manufacturing

Resin weighs substantially on the costs associated with the manufacturing of MDF (medium-density fiberboard). It is thus important to ensure the efficiency of resin usage in production lines with the purpose of ensuring a given internal bond strength (IB) for specific products. Sonae has two MDF production lines using similar technologies and materials but which need different resin percentages to reach the same IB. It was asked of the study group to find out what were the determining factors responsible for this difference and, if possible, suggest alternatives which will improve resin efficiency