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Prostředí a podmínky života lidí s mentálním handicapem v letech 1969 - 1992 / Environment and Living Conditions of People with Learning Disabilities in 1969-1992Zdráhalová, Lucie January 2014 (has links)
The thesis tries to contribute to spread the consciousness about the people who had learning disabilities and who lived during the normalization. In our contemporary history this group was marginalized. The aim of this thesis is to try if and how the environment and living conditions of these people in the institutional care changed during the years 1969 - 1992. The research was realised by the oral history and worked with five testimonies of women who live in different parts of the Czech Republic and who worked with people with learning disabilities before 1989 and also in the nineties. The other sources which I used were publications devoted to special education. These publications contain the short process of evolution of care of people with learning disabilities. I used the publications which were published during the years 1969 - 1992 and also those which were published after 1989. The basic area of topics in the thesis includes the daily routine in the institutional care, the education (institutional and also non-institutional), employment, financial matters and the leisure time of people with learning disabilities. The others are: the view of the majority society to these people and how the special teachers were educated. The final chapter reflects the changes occurred after November 1989....
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Análise do desempenho operacional de sistemas fotovoltaicos de diferentes tecnologias em clima tropical – estudo de caso: sistema fotovoltaico comercial conectado à redeTORRES, Igor Cavalcante 04 February 2016 (has links)
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Previous issue date: 2016-02-04 / CAPEs / Este trabalho descreve a operação e desempenho de um sistema fotovoltaico ligado à
rede, alocado em um escritório comercial na cidade de Maceió, Alagoas. O gerador é composto
por três subsistemas independentes, totalizando potência total de 1,6 kWp e conectada à rede
elétrica local. Os subsistemas são compostos por tecnologias comerciais: Si-p e Si-m,
permitindo a avaliação do desempenho operacional dessas tecnologias na condição de clima
tropical marítimo. Para realizar a análise, o sistema foi particionado em três subsistemas
distintos, onde inicialmente os subsistemas I e II operavam com um fator de dimensionamento
de 1,42 e o subsistema III com um fator de 0,98. Cada arranjo dos geradores do subsistema I e
II opera com quatro módulos de 140 Wp totalizando uma potência total de 560 Wp, sendo as
células de silício policristalino e monocristalino, respectivamente. O subsistema III possui
quatro módulos de 130 Wp, de silício policristalino totalizando 520 Wp. Para as tecnologias
comerciais estudadas nos subsistemas I, II e III, sob as mesmas variabilidades climatológicas
(irradiância, temperatura ambiente e velocidade do vento), condições padrão de instalação
elétrica, FDI e inversores idênticos (800 W) os subsistemas I e II obtiveram os mesmo níveis
de eficiência de conversão fotovoltaica máxima (13%), produtividade mensal média (145
kWh/kWp), coeficientes de desempenho bem próximos (78%). A eficiência de conversão, CCCA,
para os inversores que estavam com FDI igual a 1,42, (subsistemas I e II) mostrou-se uma
boa eficiência em toda a faixa de operação, entre 89 – 94%. Em contrapartida, o inversor que
estava operando com um FDI igual a 0,87 (subsistema III), provou-se menos eficiente, tendo
uma eficiência em torno de 81%. O desempenho operacional do seguidor do ponto de máxima
potência mostrou-se ineficiente, porque o arranjo fotovoltaico estava trabalhando com tensão
fixa em quase todo o tempo de operação. / This paper describes the operation and performance of a photovoltaic system connected
to the network allocated on a commercial office in the city of Maceió, Alagoas. The generator
consists of three independent subsystems, adding up of 1.6 kWp output installed and connected
to the local power grid. The subsystems consist of commercial technologies: p-Si and m-Si,
allowing the evaluation of the operating performance of these technologies in the maritime
tropical climate condition. To perform the analysis the system has been partitioned into three
distinct subsystems which initially subsystems I and II operated with a scale factor of 1.42 and
subsystem III with a factor of 0.98. Each arrangement subsystems I and II operates four modules
of 140 Wp adding up a total output of 560 Wp, using cells polycrystalline and monocrystalline
silicon, respectively. The subsystem III has four modules of 130 Wp polycrystalline silicon
with a total of 520 Wp. For commercial technologies studied the subsystems I, II and III under
the same climate variability (irradiance ambient temperature, wind speed) electrical standard
conditions, FDI and inverters (800 W), subsystems I and II obtained the same level of maximum
photovoltaic efficiency conversion (13%), average monthly productivity (145 kWh / kWp),
coefficient of performance (78%). The conversion efficiency, DC-AC, for inversors with FDI
1.42 (subsystems I and II) had a good efficiency across the operating rate, between 89-94%.
However, the inverter were operating with a FDI equal 0.87 (subsystem III), was less efficient,
having an efficiency around 81%. The operating performance at the point of maximum power
proved to be inefficient, because the PV system array was working with fixed voltage for almost
all operating time.
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