583 research outputs found

    Business Intelligence in the Vineyard

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    The evolution that is nowadays taking place in the information and communication fields, namely in mobile computing and remote monitoring, constitutes a very interesting challenge to the agricultural sector. This reality places agronomic knowledge in centre stage as these technologies are dramatically improving data collection and storage capacities, challenging the farmers and the agricultural field experts to develop processes that efficiently transform data into information and knowledge and are able to support the everyday decision making at farm level. In this work we will present a demonstration project under way in a vineyard in Portugal where we are exploring the potential of the most recent technological innovations available in the market to build the i-Farm, the information and knowledge society intelligent farm. i-Farm (intelligent farm) applies at farm level the potential offered by using in an integrated way mobile solutions, sensor networks, wireless communication and digital imagery materialized in a information system that supports farmer real time decision making in the field and in the office. The i-Farm project creates a unique knowledge repository containing information from multiple sources (crop, environment, soil, operations, market, etc.) enabling accurate and timely decisions. For the project development a Business Intelligence approach is used. In the context of this paper this broad term is used to refer to the process of aggregating, processing and building rich and relevant information which is made available dynamically in real time to managers in an interactive way to support decisions and planning activitiesinfo:eu-repo/semantics/publishedVersio

    Tourism And Urbanization: Environmental Problem Of The Araruai Lagoon, State Of Rio De Janeiro, Brazil

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    The Araruama Lagoon (Rio de Janeiro) is known for its scenic beauty and natural resources, factors that have led to the economic expansion of the region. In recent decades, tourism and property speculation have been key to the urban development of the municipalities surrounding this Lagoon. Using secondary data and a theoretical framework based on Political Ecology and Critical Environmental Education, this article seeks to analyze the correlations between the development processes of the towns surrounding the Lagoon and the impact of these processes on the environmental quality of its ecosystem. In recent years, the evolution of parameters studied revealed that the imbalance in terms of the sustainable development of the region has damaged the health of this body of water. Large quantities of fresh water, as well as domestic and industrial effluents discharged without appropriate treatment in the Lagoon, have overloaded the ecological system, with negative effects for the entire economy in the surrounding area.194598

    Eventos espeleogenéticos do alto vale do Rio Ribeira de Iguapé - SP

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    PREMIVM – improving grape quality with multiparametric field analysis of grapes and leaves in vineyards

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    European wine industry is a strategic economic sector that is nowadays facing a growing competition in the international market at the same time it as to deal with predictable lower support from the CAP. Taking into consideration that the use of ICT can support the development of new tools and devices that can reduce costs and increase final product quality/quantity an international consortium that comprises 3 technical companies and 3 winegrowers together with 3 research groups setup the EU Project PREMIVM. In this work will present the PREMIVM decision support system that was developed including the field device for data collection - WINEPEN, the web information management system for data storage, processing and information visualization, and the smartphone interface for information deliveryinfo:eu-repo/semantics/publishedVersio

    Effect of escitalopram on the processing of emotional faces

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    Serotonin has been implicated in the neurobiology of depressive and anxiety disorders, but little is known about its role in the modulation of basic emotional processing. The aim of this study was to determine the effect of the selective serotonin reuptake inhibitor, escitalopram, on the perception of facial emotional expressions. Twelve healthy male volunteers completed two experimental sessions each, in a randomized, balanced order, double-blind design. A single oral dose of escitalopram (10 mg) or placebo was administered 3 h before the task. Participants were presented to a task composed of six basic emotions (anger, disgust, fear, happiness, sadness, and surprise) that were morphed between neutral and each standard emotion in 10% steps. Escitalopram facilitated the recognition of sadness and inhibited the recognition of happiness in male, but not female faces. No drug effect on subjective measures was detected. These results confirm that serotonin modulates the recognition of emotional faces, and suggest that the gender of the face can have a role in this modulation. Further studies including female volunteers are needed

    i-Farm: A exploração vitícola inteligente da sociedade da informação e do conhecimento

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    www.i-Farm.pt.Neste trabalho iremos explorar o potencial das mais recentes inovações tecnológicas disponíveis no mercado para construir a i-Farm, a exploração vitícola inteligente da sociedade da informação e do conhecimento. O projecto i-Farm foi financiado pelo Programa DEMTEC da Agência de Inovação, apesar de passível de ser aplicado em qualquer actividade agrícola, é apresentado para o caso concreto da vinha, pois a viticultura foi considerada estratégicas no âmbito do Plano Estratégico Nacional para o Desenvolvimento Rural Português (GPP, 2007), numa lógica de aumento da competitividade do sector agrícola, conforme previsto no Eixo 1 da referida estratégia. A viticultura, mais concretamente a viticultura de precisão, tem vindo a receber uma atenção crescente da comunidade científica e empresarial na medida em que é efectivamente uma actividade capital intensivo em que a realização de investimentos em tecnologias de informação e comunicação podem ser justificados numa análise custo/benefício rigorosa. É hoje possível encontrar na literatura científica e nas empresas de prestação de serviços especializados exemplos concretos da aplicação das mais recentes tecnologias de monitorização remota sem fios na vinha (Camilli et al., 2007, Morais et al., 2008, Neto et al. 2007). Neste projecto quisemos ir mais longe na utilização das tecnologias disponíveis para construir um sistema integrado de apoio à decisão numa abordagem de Business Intelligence e estudar a utilização de digital dashboards para suportar a tomada de decisão ao nível da exploraçãoinfo:eu-repo/semantics/publishedVersio

    MAXIMUM NUMBER OF REPETITIONS, TOTAL WEIGHT LIFTED AND NEUROMUSCULAR FATIGUE IN INDIVIDUALS WITH DIFFERENT TRAINING BACKGROUNDS

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    The aim of this study was to evaluate the performance, as well as neuromuscular activity, in a strength task in subjects with different training backgrounds. Participants (n = 26) were divided into three groups according to their training backgrounds (aerobic, strength or mixed) and submitted to three sessions: (1) determination of the maximum oxygen uptake during the incremental treadmill test to exhaustion and familiarization of the evaluation of maximum strength (1RM) for the half squat; (2) 1RM determination; and (3) strength exercise, four sets at 80�0of the 1RM, in which the maximum number of repetitions (MNR), the total weight lifted (TWL), the root mean square (RMS) and median frequency (MF) of the electromyographic (EMG) activity for the second and last repetition were computed. There was an effect of group for MNR, with the aerobic group performing a higher MNR compared to the strength group (P = 0.045), and an effect on MF with a higher value in the second repetition than in the last repetition (P = 0.016). These results demonstrated that individuals with better aerobic fitness were more fatigue resistant than strength trained individuals. The absence of differences in EMG signals indicates that individuals with different training backgrounds have a similar pattern of motor unit recruitment during a resistance exercise performed until failure, and that the greater capacity to perform the MNR probably can be explained by peripheral adaptations

    i-Farm: A exploração vitícola inteligente da sociedade da informação e do conhecimento

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    Neste trabalho explora-se o potencial das mais recentes inovações tecnológicas disponíveis no mercado para construir a i-Farm, a exploração agrícola inteligente da sociedade da informação e do conhecimento, aplicada à viticultura. A i-Farm, projecto financiado pelo Programa DEMTEC da Agência de Inovação, aplica ao nível da exploração agrícola, o potencial da utilização integrada de soluções móveis, redes de sensores, comunicações sem fios e imagens aéreas materializado num sistema de informação geo-referenciado que apoia, no campo ou no escritório, a tomada de decisão do empresário agrícola em tempo real. A i-Farm é suportada por um sistema de informação integrando de forma modular múltiplas funcionalidades, tais como sensores ambientais, fito-sensores, câmaras de vídeo e fotográficas, assistentes pessoais digitais, etc., acessíveis num ponto de acesso único na Web. A lógica modular que a i-Farm adopta permite assegurar a possibilidade de, a prazo, agregar ao sistema de informação sistemas de apoio à decisão de natureza diversa, como sejam ferramentas de apoio à gestão da rega, previsão de ocorrência de problemas com pragas e doenças, cálculo de necessidades de nutrientes, previsão de colheita, etc. Este sistema consegue “falar” com os restantes sistemas de informação sectoriais existentes na exploração, com sejam a gestão de stocks, facturação, contabilidade, recursos humanos, etc. Por último, sendo suportado pelas tecnologias Internet, assegura a possibilidade de recolher, armazenar e disponibilizar informação com origem no ambiente externo da exploração, incluindo informação de mercado, legal, administrativa, etc. O acesso à informação é efectuado numa interface amigável, sempre em ambiente Web, para duas plataformas distintas - computadores de secretária / portáteis e assistentes pessoais digitais com ligação à Internet, com ou sem fios. No caso dos assistentes pessoais digitais, o acesso à Internet sem fios permitirá o acesso através da própria rede local sem fios da i-Farm na exploração oferecendo, assim, a possibilidade do próprio técnico / empresário aceder ao sistema quando está a realizar a sua visita ao terrenoinfo:eu-repo/semantics/publishedVersio

    Psychometric properties of the Brazilian version of the Pittsburgh Sleep Quality Index Addendum for PTSD (PSQI-A)

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    Objective: Sleep disturbances play a fundamental role in the pathophysiology posttraumatic stress disorder (PTSD), and are not only a secondary feature. The aim of this study was to validate and assess the psychometric properties of the Brazilian version of the Pittsburgh Sleep Quality Index Addendum for PTSD (PSQI-A-BR), a self-report instrument designed to assess the frequency of seven disruptive nocturnal behaviors, in a sample of participants with and without PTSD. Methods: PSQI-A was translated into Brazilian Portuguese and applied to a convenience sample of 190 volunteers, with and without PTSD, who had sought treatment for the consequences of a traumatic event. Results: The PSQI-A-BR displayed satisfactory internal consistency (Cronbach's coefficient of 0.83 between all items) and convergent validity with the Clinician Administered PTSD Scale (CAPS), even when excluding sleep-related items (r = 0.52). Test-retest yielded high agreement in the global PSQI-A-BR, with good stability over time (r = 0.88). A global PSQI-A-BR cutoff score of 7 yielded a sensitivity of 79%, specificity of 64%, and a global score of 7 yielded a positive predictive value of 93% for discriminating participants with PTSD from those without PTSD. Conclusion: The PSQI-A-BR is a valid instrument for PTSD assessment, applicable to both clinical and research settings.Universidade Federal de São Paulo (UNIFESP) Department of PsychiatryUniversity of Pittsburgh School of Medicine Department of PsychiatryUniversidade Federal de São Paulo (UNIFESP) Department of PsychobiologyUNIFESP, Department of PsychiatryUNIFESP, Department of PsychobiologySciEL

    Pairing and Density Correlations of Stripe Electrons in a Two-Dimensional Antiferromagnet

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    We study a one-dimensional electron liquid embedded in a 2D antiferromagnetic insulator, and coupled to it via a weak antiferromagnetic spin exchange interaction. We argue that this model may qualitatively capture the physics of a single charge stripe in the cuprates on length- and time scales shorter than those set by its fluctuation dynamics. Using a local mean-field approach we identify the low-energy effective theory that describes the electronic spin sector of the stripe as that of a sine-Gordon model. We determine its phases via a perturbative renormalization group analysis. For realistic values of the model parameters we obtain a phase characterized by enhanced spin density and composite charge density wave correlations, coexisting with subleading triplet and composite singlet pairing correlations. This result is shown to be independent of the spatial orientation of the stripe on the square lattice. Slow transverse fluctuations of the stripes tend to suppress the density correlations, thus promoting the pairing instabilities. The largest amplitudes for the composite instabilities appear when the stripe forms an antiphase domain wall in the antiferromagnet. For twisted spin alignments the amplitudes decrease and leave room for a new type of composite pairing correlation, breaking parity but preserving time reversal symmetry.Comment: Revtex, 28 pages incl. 5 figure
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