Application of Integrated Wind Energy Conversion System (WECS) and Photovoltaic (PV) Solar Farm as STATCOM to Regulate Grid Voltage During Night Time

AbstractThis paper presents the integration of wind energy conversion system (WECS) with photovoltaic (PV) solar farm (SF) which acts as flexible ac transmission system controller-static synchronous compensator during night time, to regulate the point of common coupling voltage and to rectify faults when SF is not producing any active power. The proposed control will enable increased connections of WECS. MATLAB/Simulink based simulation results are presented for validation of the system

Adding value to laboratory medicine: a professional responsibility

Laboratory medicine is a medical specialty at the centre of healthcare. When used optimally laboratory medicine generates knowledge that can facilitate patient safety, improve patient outcomes, shorten patient journeys and lead to more cost-effective healthcare. Optimal use of laboratory medicine relies on dynamic and authoritative leadership outside as well as inside the laboratory. The first responsibility of the head of a clinical laboratory is to ensure the provision of a high quality service across a wide range of parameters culminating in laboratory accreditation against an international standard, such as ISO 15189. From that essential baseline the leadership of laboratory medicine at local, national and international level needs to ‘add value’ to ensure the optimal delivery, use, development and evaluation of the services provided for individuals and for groups of patients. A convenient tool to illustrate added value is use of the mnemonic ‘SCIENCE’. This tool allows added value to be considered in seven domains: standardisation and harmonisation; clinical effectiveness; innovation; evidence-based practice; novel applications; cost-effectiveness; and education of others. The assessment of added value in laboratory medicine may be considered against a framework that comprises three dimensions: operational efficiency; patient management; and patient behaviours. The profession and the patient will benefit from sharing examples of adding value to laboratory medicine

Mathematical algorithm for selection of spt resistance value in foundation design

Thesis (Ph. D.)--Michigan State University. Department of Civil and Environmental Engineering, 1990Includes bibliographical references (pages 239-250

Taller "Aprendamos a comer y el rendimiento académico de los niños de cuarto grado "E" de Educación Primaria de la I.E. N° 1140 de Lima - 2017"

El presente trabajo de investigación tiene como propósito fundamental aplicar una propuesta metodológica orientada a disminuir el consumo de comida "chatarra" y mejorar el rendimiento académico de los niños y niñas del cuarto grado "E" de primaria de la I.E.P. N° 1140 "Aurelio Miro Quesada" de la ciudad de Lima. La presente investigación es de tipo libre y obedece la elección del investigador de realizar un estudio sobre como orientar los hábitos alimenticios a través del taller "aprendamos a comer" para mejorar el rendimiento académico de los niños del cuarto grado "E" de la I.E.P. 1140 "Aurelio Miro Quesada" Lima a fin de cambiar los malos hábitos alimenticios de los niños, buscar cambios de conducta y alternativa de solución para mejorar el rendimiento académico y la tarea educativa en general. Para los resultados se utilizado las medidas de tendencia central como: media aritmética, mediana, moda, también se ha utilizado las medidas de dispersión como son: desviación estándar, varianza y el coeficiente de variación y para la comprobación de la hipótesis se ha utilizado la T de estudent, con tipo de investigación experimental, con un pre y pos test. Donde se ha demostrado un gran avance respecto al rendimiento académico aplicando el taller aprendamos a comer como se demuestra en el trato estadístico quedando comprobada positivamente la hipótesis propuesta; entonces se logró determinar que la aplicación de talleres "aprendamos a comer" influye directamente en el rendimiento académico de los niños y niñas del 4º grado de la IE. N° 1140 "Aurelio Miro Quesada", de la Provincia de Lima -2017.Tesi

O ensino e a aprendizagem de estatística por meio de oficinas em laboratório de informática no centro de ensino medio castelo branco.

The aim of this work was to provide students with theoretical and practical knowledge about the statistics, stimulating curiosity, interest and creativity of the student. The activities were carried out in a public school in the town of Araguaina-TO. In this way he pointed out this research, the importance of the student be able to analyze information, read statistical data, build charts and graphs. In this sense, the National Curricular Parameters (PCN ́s), Brazil (1997), justify the teaching of statistics, orienting to the need of the individual to understand the information conveyed, learn to make decisions and make predictions that influence your personal life and in the community. Thus, the methodology used for this study was a qualitative and quantitative-oriented approach of descriptive and explanatory nature, based on field research carried out in the Centre of White Castle high school, where two workshops were developed; a using ruler and compass and another in the computer lab of the school, using the Excel Software for building worksheets and charts of statistical data searched. It was used also as instruments: questionnaire, testimonials and pictures for collection and documentation of information and facts. The results obtained, it is concluded that the math teachers, still do not have the habit of driving students to the computer lab this school to make statistics activities and/or mathematics, in this interactive space for teaching and learning. So, the students carry out the proposed activities in the workshops, became able to do a spreadsheet, build a graph and interpret statistical data.O objetivo deste trabalho foi de proporcionar aos alunos conhecimentos teóricos e práticos sobre a Estatística, estimulando a curiosidade, o interesse e a criatividade do aluno. As atividades foram realizadas numa escola pública na cidade de Araguaína - TO. Desta forma ressaltou-se nesta pesquisa, a importância do aluno ser capaz de analisar informações, ler os dados estatísticos, construir tabelas e gráficos. Neste sentido, os Parâmetros Curriculares Nacionais (PCN ́s), Brasil (1997), justificam o ensino da Estatística, orientando para a necessidade do indivíduo, compreender as informações veiculadas, saber tomar decisões e fazer previsões que influenciam sua vida pessoal e em comunidade. Assim, a metodologia empregada para este estudo foi uma abordagem de cunho qualitativa e quantitativa de natureza descritiva e explicativa, apoiada em pesquisa de campo realizada no Centro de Ensino Médio Castelo Branco, onde foram desenvolvidas duas oficinas; uma usando régua e compasso e outra no Laboratório de Informática da escola, utilizando o Software Excel para construção de planilhas e gráficos estatísticos dos dados pesquisados. Utilizou-se, também, de instrumentos como: questionário, depoimentos e fotos para obtenção e documentação de informações e fatos. Pelos resultados obtidos, conclui-se que os professores de Matemática, ainda não têm o hábito de conduzir os alunos para o Laboratório de Informática dessa escola para fazer atividades de Estatística e/ou Matemática, nesse espaço interativo de ensino e aprendizagem. De modo que, os alunos ao realizarem as atividades propostas nas oficinas, tornaram-se aptos a fazer uma planilha, construir um gráfico e interpretar dados estatísticos

Fatores relacionados ao desuso do captopril e seu uso para tratar tumores

A hipertensão arterial sistêmica (HAS) é um grave problema de saúde pública. De acordo com a OMS em 2013, cerca de 9,4 milhões de óbitos ocorreram em decorrência dessa doença. Na maioria das vezes a hipertensão se apresenta de forma assintomática e que pode ser desenvolvida por vários fatores. O captopril, fármaco da classe dos iECA foi por muito tempo considerado padrão ouro para tratamento da HAS sendo utilizado desde a sua descoberta na década de 60. A partir de 2003 o captopril começa a ser substituído por outros fármacos de outras classes de anti-hipertensivos. Este artigo fez uma revisão bibliográfica em artigos, livros e revistas, para compreender melhor a diminuição do uso do captopril como anti-hipertensivo e seu potencial terapêutico para outras patologias. O desuso do captopril foi incentivado pelos diversos efeitos colaterais e interações medicamentosas. Fármacos de outras classes de anti-hipertensivos, como a losartana, apresentam eficiência e segurança até melhores que o captopril. Antes mesmo da diminuição do uso do captopril, diversos autores demonstraram sua possível atividade antitumoral em diversos tipos de tumores.&nbsp

The Evolution of the South African Science, Technology and Innovation System 1994-2009: An Exploration

Atlanta Conference on Science and Innovation Policy 2009This presentation was part of the session : Other PapersThis material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. ©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.This paper is part of a longitudinal project on the evolution of the South African science, technology and innovation (STI) system since 1994, the year that marked the end of apartheid government. Given that the overarching national (and international) commitment of the post-1994 government has throughout been the normalisation and correcting of past discrimination, it was hypothesised that changes to the STI system would entail reforming it to become an inclusive system by changing the three pillars of the STI system, viz. national objectives, the human resource composition (race and gender equity) and steering/control mechanisms. The primary level of analysis focussed on initiatives (including allocation of resources) of the Ministry of Science and Technology, with cross-references to developments in two other ministries also involved in the STI system, viz. (Higher) Education and Trade and Industry. The analyses showed, firstly, that the core STI missions were changed substantially over time. Secondly, extensive transformation has been brought about on the human resource dimension in terms of both race and gender equity, although the gender distribution remains skewed at management level. Thirdly, the government has introduced a range of new steering mechanisms and significantly tightened its control on both public universities and research institutions. The paper concludes by identifying four imminent challenges confronting the STI system, viz. the distribution of public financial support; finding the balance between advanced postgraduate studies and professional/technical training/skilling of unemployed youth; proving the benefits of STI for improving the lot of the still very large deprived section of the population; and improving the country's international competitiveness