• Title/Summary/Keyword: Resource adequacy

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Incorporating Resource Dynamics to Determine Generation Adequacy Levels in Restructured Bulk Power Systems

  • Felder, Frank A.
    • KIEE International Transactions on Power Engineering
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    • v.4A no.2
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    • pp.100-105
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    • 2004
  • Installed capacity markets in the northeast of the United States ensure that adequate generation exists to satisfy regional loss of load probability (LOLP) criterion. LOLP studies are conducted to determine the amount of capacity that is needed, but they do not consider several factors that substantially affect the calculated distribution of available capacity. These studies do not account for the fact that generation availability increases during periods of high demand and therefore prices, common-cause failures that result in multiple generation units being unavailable at the same time, and the negative correlation between load and available capacity due to temperature and humidity. A categorization of incidents in an existing bulk power reliability database is proposed to analyze the existence and frequency of independent failures and those associated with resource dynamics. Findings are augmented with other empirical findings. Monte Carlo methods are proposed to model these resource dynamics. Using the IEEE Reliability Test System as a single-bus case study, the LOLP results change substantially when these factors are considered. Better data collection is necessary to support the more comprehensive modeling of resource adequacy that is proposed. In addition, a parallel processing method is used to offset the increase in computational times required to model these dynamics.

New-generation Married Women결s Joint Participation in Decision-Making and Home Management Satisfaction (신세대 기혼여성의 의사결정 공동참여와 가정관리만족도)

  • 이정우;박은아
    • Journal of Family Resource Management and Policy Review
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    • v.5 no.1
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    • pp.97-110
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    • 2001
  • This study was designed to examine the effect of joint participation in decision-making on the home management satisfaction of new-generation married women, which will issue basic data for improving the quality of new-generation home life. The sample was composed of 371 married women under 39years old, selected by age and the local distribution. Major findings are as follows. 1) New-generation married women’s joint participation in decision-making showed a significant difference by degree of communication, perception of the adequacy of resources, perception of the level of living. Home management satisfaction shoed a significant difference by state of employment, existence of children, sex role attitudes, degree of communication, perception of the adequacy of resources, perception of the level of living. 2) The more a couple participated in decision-making about eating and children, the higher level a new-generation married women showed in home management satisfaction. 3) The main variables predicating new-generation married women’s home management satisfaction was perception of the adequacy of resources, perception of the level of living, gender role attitudes, existence of children, joint participation in decision-making about eating and children. They accounted for 36% of the variance.

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A Study on Development of the Perceived Adequacy of Resorces Scale (자원적정지각 척도 개발에 관한 연구)

  • 조영희
    • Journal of Families and Better Life
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    • v.9 no.2
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    • pp.241-251
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    • 1991
  • The Purpose of this study was the development of scale to measure the Perceived Adequacy of Resources(PAR). A 38-item instrument was analysed with responses form 300 wives dwelling in Seoul. PAR was categorized housing, health, time money, interpersonal, knowledge/skills, community resources, Data were analysed by the method of Pearson's Correlation, Factor Analysis and Multiple Regression. Items were loaded eight resource categories such as time housing, money , health, knowledge, social support, community, psychological relationship. Internal consistency of the scale was high(Cronbach's α=.85) The result proposed PAR constructed 28 items.

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A Critique of Designing Resource Adequacy Markets to Meet Loss of Load Probability Criterion

  • Yoon, Yong T.;Felder, Frank A.
    • KIEE International Transactions on Power Engineering
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    • v.3A no.1
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    • pp.35-41
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    • 2003
  • To ensure resource adequacy in restructured electricity markets, policymakers have adopted installed capacity (ICAP) markets in some regions of the United States. These markets ensure that adequate generation exists to satisfy regional Loss of Load Probability(LOLP) criterion. Since the incentives created through ICAP mechanisms directly impact new generation and transmission investment decisions we examine one important factor that links ICAP markets with LOLP calculations;, determining the amount of ICAP credit assigned to particular generation units. First, we review and critique the literature on electric power systems' market failure resulting from demand exceeding supply. We then summarize the method of computing (the LOLP) as a means of assessing reliability and relate this method to ICAP markets. We find that only the expected value of available generation is used In current ICAP markets while ignoring the second and higher order moments, which tends to mis-state the ICAP value of a specific resource. We then consider a proposal whose purpose is to avoid this ICAP assignment issue by switching from ICAP obligations to options. We find that such a proposal may fail to not provide the benefits claimed and suffers from several practical difficulties. Finally, we conclude with some policy recommendations and areas for future research.

Comparative Assessment of a Self-sampling Device and Gynecologist Sampling for Cytology and HPV DNA Detection in a Rural and Low Resource Setting: Malaysian Experience

  • Latiff, Latiffah A;Ibrahim, Zaidah;Pei, Chong Pei;Rahman, Sabariah Abdul;Akhtari-Zavare, Mehrnoosh
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.18
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    • pp.8495-8501
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    • 2016
  • Purpose: This study was conducted to assess the agreement and differences between cervical self-sampling with a Kato device (KSSD) and gynecologist sampling for Pap cytology and human papillomavirus DNA (HPV DNA) detection. Materials and Methods: Women underwent self-sampling followed by gynecologist sampling during screening at two primary health clinics. Pap cytology of cervical specimens was evaluated for specimen adequacy, presence of endocervical cells or transformation zone cells and cytological interpretation for cells abnormalities. Cervical specimens were also extracted and tested for HPV DNA detection. Positive HPV smears underwent gene sequencing and HPV genotyping by referring to the online NCBI gene bank. Results were compared between samplings by Kappa agreement and McNemar test. Results: For Pap specimen adequacy, KSSD showed 100% agreement with gynecologist sampling but had only 32.3% agreement for presence of endocervical cells. Both sampling showed 100% agreement with only 1 case detected HSIL favouring CIN2 for cytology result. HPV DNA detection showed 86.2%agreement (K=0.64, 95% CI 0.524-0.756, p=0.001) between samplings. KSSD and gynaecologist sampling identified high risk HPV in 17.3% and 23.9% respectively (p=0.014). Conclusion: The self-sampling using Kato device can serve as a tool in Pap cytology and HPV DNA detection in low resource settings in Malaysia. Self-sampling devices such as KSSD can be used as an alternative technique to gynaecologist sampling for cervical cancer screening among rural populations in Malaysia.

Nurses' Perception of Organizational Commitment, Nursing Work Environment, and Social Support in a General Hospital (일개 종합병원 간호사의 조직몰입, 간호업무환경, 사회적 지지)

  • Im, Sook Bin;Lee, Mi Young;Kim, Se Young
    • Journal of Korean Academy of Nursing Administration
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    • v.21 no.1
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    • pp.1-9
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    • 2015
  • Purpose: This study was done to identify the influence of nursing work environment and social support on multidimensional organizational commitment among nurses. Methods: The survey was conducted in August 2012 with self-report questionnaire. Participants were 480 registered nurses working in one general hospital. Data were analyzed with descriptive statistics, t-test, ANOVA, Pearson correlation, and multiple regression using SPSS/WIN(16.0). Results: The average scores were; for affective commitment 2.84, for continuance commitment 2.48, and for normative commitment 2.57. There were significant relationships between affective, continuance, normative commitment and sub-factors of nursing work environment and social support. The affective, continuance, and normative commitment were all influenced by 'staffing and resource adequacy' and 'nursing foundations for quality of care', sub-factors of nursing work environment. Distinctively, affective commitment was influenced by 'staffing and resource adequacy', nurses' age, 'nurse-doctor relations', 'supervisor's emotional support', 'nurse participation in hospital affairs', 'nursing foundations for quality of care', and 'supervisor's informational support', which explained 30.9% of variance in affective commitment(F=31.57, p<.001). Conclusion: The findings show that programs which promote supervisors' emotional and informational support are important to enhance nurses' affective commitment. Also, it is necessary to improve nursing work environment to improve nurses' organizational commitment.

Urban middle-aged housewives도 decision-making and their family life satisfaction in ecological approach (생태학적 관점에서 본 도시 중년기 주부의 의사결정 및 가정생활만족)

  • 이정우;정진희
    • Journal of Family Resource Management and Policy Review
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    • v.2 no.2
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    • pp.53-65
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    • 1998
  • This study was designed to examine the decision-making and family life satisfaction of the urban middle-aged housewives from the ecological perspective. The main purpose of this study was to investigate the effects of ecological enviornment variables(ie, natural physical-biological environment·social-cultural environment·human-built environment) and their dicision-making on their family life satisfaction. Also, it is to provide some fundamental information that helps to elevate the family life satisfaction of the unban middle-aged housewives. The subjects of this study were 305 housewives living in Seoul and Inchon area, whose age was from 40 to 59. The significant results were as follows: 1) Their decision-making was affected by the following variables in the order of health condition, fate-control orientation, husband’s support, monthly family income and the perception of the adequacy of household income. 2) The ecological environment variables which had an influence on family life satisfaction were the perception of the adequacy of household income, husband’s support, fate-control orientation, health condition and educational level. 3) From the regression analysis, the model was found to be highly significant, accounting for 44% of the variance. Thus, husband’s support was the strongest predictor variable.

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The Influences of Family Resource Locus of Control and Coping Styles on the Stress from the Family Resource Management in Housewives (가정자원, 통제소재 및 스트레스 대처방법이 주부의 가정자원관리 스트레스에 미치는 영향)

  • 장윤옥
    • Journal of Families and Better Life
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    • v.15 no.4
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    • pp.287-300
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    • 1997
  • The purpose of this study was to explore the degree of the stress from the family resources management according to objective resources and to investigate the relative importance of the variables which affect the stress from the family resources management in housewives. The subjects of this study were 565 married women who lived in apartment in Taegu. A questionnaire was used as survey method. The data was analyzed by means of factor analysis, t-test, ANOVA, Scheffe test and multiple regression analysis. The main findings were as follows First there was significant difference in the degree of the stress from the family resources management according to the objective resource. Second, the stress from the family resources management were more affected by perceived adequacy resource, the passive coping style, size of apartment than other variables.

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Strategic Electricity Resource Planning using EGEAS Model (EGEAS 모형을 활용한 전략적 전원개발 계획)

  • Kwon, Y.H.;Kim, C.S.
    • Proceedings of the KIEE Conference
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    • 1993.07a
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    • pp.144-147
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    • 1993
  • The long-term electricity resource planning of electric utility has undergone significant change during the past decade. The current resource planning can be considered as multi-objective decision making procedure under the various uncertainties such as demand growth, construction cost, fuel price, environmental regulation, plant site, financial adequacy, new technology advent and so on. This paper presents a standardized electricity resource planning scheme using the strategic planning concept. EGEAS computer model was fully applied to indentify feasible alternative plans and simulate various attribute values corresponding each alternative plan and future. As a case study, a hypothetical long-ten capacity expansion planning problem is analyzed.

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Performance Testing Methodology for Web based University Resource Planning Systems (웹 기반 대학종합정보시스템의 성능 테스트 수행 방법론)

  • Lee Won-Jae;Ryu Sang-hoon
    • Proceedings of the Korea Information Processing Society Conference
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    • 2004.11a
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    • pp.279-282
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    • 2004
  • In this paper, we present the methodology of performance testing for web based university resource planning systems. The methodology contains an adequate procedure and workload assessment method. We execute real performance testing to the university resource system during system test stage. To verify the adequacy of the methodology, We compare the result between testing system's hardware utilization and operating system's. The result is nearly the same. Empirical experiments are also shown.

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