Optimal reactive power dispatch using stochastic chance-constrained programming

Deterministic Optimal Reactive Power Dispatch problem has been extensively studied, such that the demand power and the availability of shunt reactive power compensators are known and fixed. Give this background, a two-stage stochastic optimization model is first formulated under the presumption that the load demand can be modeled as specified random parameters. A second stochastic chance-constrained model is presented considering uncertainty on the demand and the equivalent availability of shunt reactive power compensators. Simulations on six-bus and 30-bus test systems are used to illustrate the validity and essential features of the proposed models. This simulations shows that the proposed models can prevent to the power system operator about of the deficit of reactive power in the power system and suggest that shunt reactive sourses must be dispatched against the unavailability of any reactive source. © 2012 IEEE.

Synthesis, structural characterization and photophysical properties of highly photoluminescent crystals of Eu(III), Tb(III) and Dy(III) with 2,5-thiophenedicarboxylate

Lanthanide compounds of general formula [Ln2(2,5-tdc) 3(dmf)2(H2O)2] ·2dmf·H2O (Ln = Eu(III) (1), Tb(III) (2), Gd(III) (3) and Dy(III) (4), dmf = N,N′-dimethylformamide and 2,5-tdc2- = 2,5-thiophedicarboxylate anion) were synthesized and characterized by elemental analysis, X-ray powder diffraction patterns, thermogravimetric analysis and infrared spectroscopy. Phosphorescence data of Gd(III) complex showed that the triplet states (T1) of 2,5-tdc2- ligand have higher energy than the main emitting states of Eu(III), Tb(III) and Dy(III), indicating that 2,5-tdc2- ligand can act as intramolecular energy donor for these metal ions. An energy level diagram was used to establish the most relevant channels involved in the ligand-to-metal energy transfer. The high value of experimental intensity parameter Ω2 for the Eu(III) complex indicate that the europium ion is in a highly polarizable chemical environment. The emission quantum efficiency (η) of the 5D0 emitting level of Eu(III) was also determined. The complexes act as possible light conversion molecular devices (LCMDs). © 2013 Elsevier B.V. All rights reserved.

Structure, characterization and near-infrared emission of a novel 6-connected uninodal 3D network of Nd(III) containing 2,5-thiophenedicarboxylate anion

The novel coordination polymer with the formula {[Nd2(2,5-tdc)3(dmf)2(H2O)2].dmf.H2O}n (2,5-tdc2-=2,5-thiophedicarboxylate anion and dmf=dimethylformamide) has been synthesized and characterized by thermal analysis (TG/DTA), vibrational spectroscopy (FTIR) and single crystal X-ray diffraction analysis (XRD). Structure analysis reveals that Nd(III) ions show dicapped trigonal prism coordination geometry. The 2,5-tdc2- ligands connect four Nd(III) centers, adopting (κ1 - κ1) - (κ1 - κ1) - μ4 coordination mode, generating an interesting 6-connected uninodal 3D network. Photophysical properties were studied using diffuse reflectance spectroscopy (DR) and excitation/emission spectra. The photoluminescence data show the near infrared emission (NIR) with the characteristic 4F3/2→4IJ (J=9/2, 11/2 and 13/2) transitions of Nd(III) ion, indicating that 2,5-tdc2- is able to act as a sensitizer for emission in NIR region. © 2013 Elsevier B.V.

Efeito da prática no controle de torque isométrico em crianças com transtorno de desenvolvimento de coordenação

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Emergência e estabilidade de padrões de coordenação intermembros em crianças com dificuldades motoras

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A preparação e a execução de tarefa de alcance ao alvo em crianças com transtornos do desenvolvimento da coordenação

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Evaluación del Programa de Cooperación Técnica de la Agencia Española de Cooperación Internacional para el Desarrollo (AECID) y la Comisión Económica para América Latina y el Caribe (CEPAL) 2010-2012. Informe de evaluación

El desempeño del Programa fue considerablemente satisfactorio. Se trató de una intervención sumamente pertinente y alineada con las necesidades de los países de la región, que presentó un buen grado de eficiencia y altos niveles de eficacia, sobre todo si esta se mide sobre la base de los tres tipos de transformaciones que emanan de su Teoría del Cambio (TdC), esto es, las transformaciones personales, las organizacionales y las relativas a las políticas públicas. El diseño del Programa fue coherente con la TdC, pero careció de un marco de resultados en que se reflejaran de manera apropiada la naturaleza y el alcance de la intervención. Los niveles de sostenibilidad varían en función de la faceta que se analice y del componente considerado. En cambio, se observan transformaciones más duraderas en lo que respecta a la capacitación personal y al posicionamiento de temáticas en las agendas regionales. La transversalización de género del Programa fue débil (con excepción del componente 1 sobre igualdad de género). Por otra parte, se lograron avances en el trabajo interdivisional, aunque la ejecución conjunta de tareas sustantivas sigue siendo un reto. El grado de aprovechamiento institucional de los resultados del Programa ha sido bajo, sobre todo por parte de la Cooperación Española y, especialmente, por parte de las Oficinas Técnicas de Cooperación (OTC)

A realidade virtual na intervenção motora em crianças com transtorno do desenvolvimento da coordenação

Pós-graduação em Desenvolvimento Humano e Tecnologias - IBRC

O efeito da intervenção com realidade virtual em indivíduos com dificuldades de coordenação motora

Pós-graduação em Desenvolvimento Humano e Tecnologias - IBRC

Modulação do sistema nervoso autônomo no desempenho motor de crianças com Transtorno do Desenvolvimento da Coordenação

Pós-graduação em Desenvolvimento Humano e Tecnologias - IBRC

Integrated analysis environment for the Movement Assessment Battery for Children

Developmental Coordination Disorder (DCD), a chronic and usually permanent condition found in children, is characterized by motor impairment that interferes with a child's activities of daily living and with academic achievement. One of the most popular tests for the quantitative diagnosis of DCD is the Movement Assessment Battery for Children (MABC). Based on the Battery's standardized scores, it is possible to identify children with typical development, children at risk of developing DCD, and children with DCD. This article describes a computational system we developed to assist with the analysis of results obtained in the MABC test. The tool was developed for the web environment and its database provides integration of MABC data. Thus, researchers around the world can share data and develop collaborative work in the DCD field. In order to help analysis processes, our system provides services for filtering data to show more specific sets of information and present the results in textual, table, and graphic formats, allowing easier and more comprehensive evaluation of the results.

Intervenção e identificação precoce do Transtorno do Desenvolvimento da Coordenação em escolares no início da alfabetização

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Synthesis, structural characterization, luminescent properties and theoretical study of three novel lanthanide metal-organic frameworks of Ho(III), Gd(III) and Eu(III) with 2,5-thiophenedicarboxylate anion

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Transtorno do desenvolvimento da coordenação: efeito do foco de atenção em tarefa bimanual

Pós-graduação em Desenvolvimento Humano e Tecnologias - IBRC

Transtorno dismórfico corporal: uma revisão de literatura

This study aimed to review articles about BDD published from 1980 to 2008, indexed in Lilacs, Francis, Scielo, Psychinfo and Ovid's databases. The main categories of analysis in the study were bibliography, method, results and their specifications. Among the results it is emphasized the considerable increase of publications from 1996 on and the low frequency of national publications on this topic. The articles consulted were mostly of characterization, their designs were more frequent as the non-experimental and experimental and used the verbal report as the main source of data collection. The results of the investigated studies focus mainly the typical behaviors and characteristics of the population diagnosed with BDD. This paper discusses the articles consulted, their contributions to the area and knowledge gaps.