• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 13
  • 7
  • 2
  • 1
  • Tagged with
  • 25
  • 25
  • 13
  • 7
  • 6
  • 6
  • 5
  • 5
  • 5
  • 4
  • 4
  • 4
  • 4
  • 4
  • 3
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Poruchy paměti ve stáří / Memory disorders in old age

KROUPOVÁ, Jitka January 2010 (has links)
Memory changes or disorders are typical for old age. The ability to absorb new information, to store it in memory and the subsequent information processing decline in old age. The dividing line between memory impairment and dementia is very vague. Czech Alzheimer Society deals with people affected by dementia. The organisation was launched in June 2008 under a project called Days of memory, project of the early memory disorders detection promotion. The practical part of my thesis deals with the project Days of memory. The first goal of the practical part is to find the reasons why clients suffering from memory disorders seek help at the ČALS contact point {--} the Centre for the Elderly PATUP in ZSF JU. The second aim of the practical part is to compare experiences of the ČALS contact point workers who are involved in the Project of the early memory disorders detection promotion, "Days of Memory", in memory scanning. The data required for the practical part of the thesis were obtained by a combination of a qualitative and quantitative research.
22

Důchodový systém ČR,jeho problémy a možnosti reformy / The Czech pension system, its problems and possibilities of the reform

Machalová, Silvie January 2007 (has links)
The main aim of this diploma thesis is to give a complex view of the Czech pension system to the reader. In recent years pensions and their associated problems have been the main theme of many discussions. We often hear politicians and experts speaking about the financial problems of the Czech pension system and its unavoidable reform. The preamble of this thesis deals with different situations in the Czech pension system, the rules under which it operates and its history. The body of this work is focused on the analysis of fundamental problems and their effects on the contemporary pension system in the Czech Republic. The emphases in the thesis are on demographic trends; the ageing process; receipts and expenditures of the Czech pension system; the political situation and public opinion in the Czech Republic. The conclusion of this thesis describes various reforms for the Czech pension system and mentions basic information about the Slovak pension system.
23

Využití stejnosměrných elektrických metod v diagnostice izolačních materiálů / The use DC electrical method in diagnostics of insulating materials

Volf, Michal January 2008 (has links)
In this work describe to the Dielectric relaxation spectroscopy for the evaluation of the actual status of insulation systém. The used methods of quantifying the dielectric response in time domain are polarization-depolarization current and recovery voltage measurement and in frequency domain the loss factor and the complex capacitance measurement. Influence of thermal ageing and temperature dependences of charge and dischage currents are observed.
24

Analogue Circuit for Detection of Ageing Phenomena in Electric Drives / Analog krets för detektering av åldringsfenomen i elektriska drivsystem

Lin, Yudong January 2023 (has links)
This master thesis presents an analogue peak holder circuit design aimed at facilitating the non-invasive inspection of the ageing process in electric drives. The ageing process of electric drives is a crucial aspect that demands accurate monitoring to ensure their long-term performance and reliability. The proposed peak holder circuit is specifically designed to detect fast and narrow-width pulses of ringing current present in the PWM drive current. By capturing and measuring the peak values of these pulses, the circuit provides valuable insights into the ageing characteristics of electric drives. Experimental results demonstrate the remarkable efficiency of the peak holder circuit in accurately detecting and quantifying the peak values of the ringing current pulses. The circuit exhibits a stable output swing within a specified effective input swing range, with low mean-squared error (MSE) values. This signifies a strong linear correlation between the input and output signals, enhancing the reliability of the ageing detection process. The ability of the peak holder circuit to effectively detect and analyze the ageing process of electric drives offers numerous advantages. By focusing on peak detection, which captures the highest values of the ringing current, the circuit provides a more efficient and targeted approach to inspecting the ageing process. This enables engineers and maintenance personnel to gain crucial insights into the degradation and performance of electric drives, allowing for timely interventions and proactive maintenance. / Detta examensarbete presenterar en nyutvecklad kretslösning för toppvärdesdetektering hos elektriska drivsystem, med målet att underlätta ickeinvasiv övervakning av åldrandesprocessen hos eldrivsystem. Åldrandet hos eldrivsystem är en avgörande faktor som kräver noggrann övervakning för att säkerställa deras långsiktiga prestanda och tillförlitlighet. Den föreslagna kretsen för att detektera toppvärden är specifikt utformad för att detektera snabba och kortvariga ringningar i PWM-modulerade strömmar. Genom att mäta toppvärdena ger kretsen värdefull information om åldrandekaraktären hos eldrivsystemen. Experimentella resultat visar på den enastående effektiviteten hos spetsdetekteringskretsen för att noggrant detektera och kvantifiera toppvärdena hos ringningarna i strömmen. Kretsen uppvisar en stabil utsignal inom ett specificerat ingångsintervall, med låga medelkvadratiska felvärden (MSE). Detta indikerar en stark linjär korrelation mellan ingångs- och utgångssignalerna, vilket förbättrar tillförlitligheten hos åldersdetektionsprocessen. Krestsens förmåga att effektivt detektera och analysera åldrandeprocessen hos eldrivsystem erbjuder flera fördelar. Genom att fokusera på toppvärdesdetektering, som fångar de högsta värdena av ringströmmen, ger kretsen ett mer effektivt och riktat tillvägagångssätt för att inspektera åldrandet. Det möjliggör för ingenjörer och underhållspersonal att få viktig information om nedbrytning och prestanda hos eldrivsystem, vilket möjliggör tidiga insatser och proaktivt underhåll.
25

O Mestre em gerontologia e a perspectiva da própria velhice

Calderoni, Sila Zugman 09 October 2006 (has links)
Made available in DSpace on 2016-04-27T18:47:21Z (GMT). No. of bitstreams: 1 GER - SILA ZUGMAN CALDERONI.pdf: 4541296 bytes, checksum: 5c4af17a5a9270efacb3e402c9cded1d (MD5) Previous issue date: 2006-10-09 / The contact with someone s old age mobilizes personal contents in middle-aged professionals dealing with the elderly, which produces effects on these professionals´ own lives. This research aimed at examining in what ways Masters in Gerontology conceive and perceive their own ageing process and future old age in the light of their personal and professional experiences. Interviews were carried out with Masters from the Post-graduate Studies Program in Social Gerontology, at PUC-SP, in the 40-60 age group and working in the area of Gerontology. Through a qualitative approach, the interviews were open and organized in a matricial reading for subsequent interpretation. This study has shown that the interviewees contact with the ageing process and the perspective of their own old age is a source of tension. Although they can already notice signs of ageing in themselves, they have not yet fully realized any limitations in their daily lives, despite half of the professionals interviewed having referred to a feeling of discomfort as a result of the awareness that they will eventually move into the aged population group themselves. Personal and professional experiences, all sorts of crises and suffering which these Masters in Gerontology have been through play a major role in the views and feelings they have towards their own ageing process. Paradoxically, they imagine themselves growing old, but without the limitations that old age brings. The knowledge acquired by the professionals interviewed associated with professional work contributed not only to reduce anguish in relation to their own future but also to produce changes in their daily practices, consequently helping improve their present life and future old age / O contato com a velhice do outro mobiliza conteúdos pessoais naqueles que se encontram na meia-idade e trabalham com idosos, o que repercute sobre suas vidas. Esta pesquisa teve como objetivo verificar como os Mestres em Gerontologia pensam e sentem o próprio processo de envelhecimento e futura velhice à luz de seu percurso pessoal e profissional. Entrevistei Mestres, titulados pelo Programa de Estudos Pós Graduados em Gerontologia Social, da PUC-SP, que atuam profissionalmente na área da Gerontologia e se situam na faixa etária entre 40 e 60 anos. Numa abordagem qualitativa, utilizei entrevistas abertas, organizadas numa leitura matricial para posterior interpretação. O estudo revelou que o contato dos entrevistados com o processo de envelhecimento e a perspectiva da própria velhice constitui-se em fonte de tensão. Reconhecem em si sinais de envelhecimento, mas ainda não percebem, em sua plenitude, restrições em seus cotidianos, embora a metade dos entrevistados já refira a sensação de incômodo em face dessa consciência. O percurso pessoal e profissional, as crises e os sofrimentos vividos, permeiam as visões e sentimentos que os Mestres em Gerontologia, na meia-idade, têm em relação ao seu próprio processo de envelhecimento e futura velhice. Paradoxalmente, sem perceber, imaginam-se idosos, até longevos, mas sem as limitações da idade avançada. Os conhecimentos adquiridos pelos estudos agregados ao trabalho profissional contribuíram para acalmar angústias em relação ao próprio futuro e modificar práticas quotidianas, tendo a função de contribuir para melhorar o presente e a futura velhice

Page generated in 0.0883 seconds