• 제목/요약/키워드: Adequacy Analysis

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A Combined Bulk Electric System Reliability Framework Using Adequacy and Static Security Indices

  • Billinton, Roy;Wangdee, Wijarn
    • Journal of Electrical Engineering and Technology
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    • 제1권4호
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    • pp.414-422
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    • 2006
  • Deterministic techniques have been applied in power system planning for many years and there is a growing interest in combining these techniques with probabilistic considerations to assess the increased system stress due to the restructured electricity environment. The overall reliability framework proposed in this paper incorporates the deterministic N-1 criterion in a probabilistic framework, and results in the joint inclusion of both adequacy and security considerations in system planning. The combined framework is achieved using system well-being analysis and traditional adequacy assessment. System well-being analysis is used to quantify the degree of N-1 security and N-1 insecurity in terms of probabilities and frequencies. Traditional adequacy assessment is Incorporated to quantify the magnitude of the severity and consequences associated with system failure. The concepts are illustrated by application to two test systems. The results based on the overall reliability analysis framework indicate that adequacy indices are adversely affected by a generation deficient environment and security indices are adversely affected by a transmission deficient environment. The combined adequacy and security framework presented in this paper can assist system planners to realize the overall benefits associated with system modifications based on the degree of adequacy and security, and therefore facilitate the decision making process.

도시주부의 계획행동유형과 관련변인에 관한 연구 (A Study on the Planning Styles of Urban Wives and Related Variables)

  • 구혜령;조영희;이기영
    • 가정과삶의질연구
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    • 제10권1호통권19호
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    • pp.191-205
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    • 1992
  • The purpose of this study was to investigate the planning styles and the differences of the level of planning styles according to individuals, family related variables and perceived adequacy of resources. The subjects of the study were 560 wives living in seoul and Daejeon. Survey methods were questionnaire. Data analysis strategies were percentile, frequency, Pearson's correlation, factor analysis, oneway analysis and multiple classification analysis. The major findings were as follows : 1) Planning styles were categorized into three factors. They were labeled resource-centered, goal-centered, constrained planning style. 2) wives tended to more frequently use a goal-centered planning style. 3) The perceived adequacy of health resource, the perceived adequacy of inter-personnal resource and occupation of husband were significant predictors of the level of resource-centered planning style. 4) The perceived adequacy of money resource was significant predictors of the level of constrained planning style. 5) The perceived adequacy of money resource and the age of youngest child were significant predictors of the level of goal-centered planning style.

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대학 반도체 교과품질의 지식충족 수준분석에 관한 실증 연구 (Level Analysis of Knowledge Adequacy based on Quality of Semiconductor Subject in University;An Empirical Study)

  • 이재하
    • 한국품질경영학회:학술대회논문집
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    • 한국품질경영학회 2007년도 춘계학술대회
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    • pp.373-379
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    • 2007
  • The purpose of this study is to examine the level of knowledge adequacy of semiconductor subjects of university. The sample was 287 graduates, graduated Bachelor degree in semiconductor within recently 5 years. Analyzing the level of knowledge adequacy, we could assure that the completion rate of major semiconductor subjects is about 40% and the rate of their knowledge adequacy is approximately 35%.

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인지기능응용척도의 타당화를 위한 기초 연구 (A Preliminary Study for the Application of Cognitive Function Scale(ACFS) in Korean Setting)

  • 조은래;황해익
    • 아동학회지
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    • 제31권3호
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    • pp.235-254
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    • 2010
  • The purpose of this study was to examine the feasibility and validity of the Application of Cognitive Function Scale as developed by Lidz and Jepsen (1997). Data were collected from 4 to 5-years-old children. The analysis for item adequacy indicated that the passing rate increases according to age. Futhermore the analysis for test adequacy indicated that internal consistency reliability was .85 in the pre-test and .80 of post-test in terms of the cognitive function scale, and .90 of pre-test and .93 in the post-test in relation to the behavior observation scale. In conclusion, our analysis of the ACFS shows sufficiently high scores in terms of both validity and reliability, so as to indicate that this test is an appropriate way to measure the cognitive function and non-intellective function of young Korean children.

An Adequacy Based Test Data Generation Technique Using Genetic Algorithms

  • Malhotra, Ruchika;Garg, Mohit
    • Journal of Information Processing Systems
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    • 제7권2호
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    • pp.363-384
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    • 2011
  • As the complexity of software is increasing, generating an effective test data has become a necessity. This necessity has increased the demand for techniques that can generate test data effectively. This paper proposes a test data generation technique based on adequacy based testing criteria. Adequacy based testing criteria uses the concept of mutation analysis to check the adequacy of test data. In general, mutation analysis is applied after the test data is generated. But, in this work, we propose a technique that applies mutation analysis at the time of test data generation only, rather than applying it after the test data has been generated. This saves significant amount of time (required to generate adequate test cases) as compared to the latter case as the total time in the latter case is the sum of the time to generate test data and the time to apply mutation analysis to the generated test data. We also use genetic algorithms that explore the complete domain of the program to provide near-global optimum solution. In this paper, we first define and explain the proposed technique. Then we validate the proposed technique using ten real time programs. The proposed technique is compared with path testing technique (that use reliability based testing criteria) for these ten programs. The results show that the adequacy based proposed technique is better than the reliability based path testing technique and there is a significant reduce in number of generated test cases and time taken to generate test cases.

치매노인 부양주부의 가정자원이 부양스트레스에 미치는 영향 (The Influences of Family Resources on Caregiving Stress for Dementia Elderly in Homemakers)

  • 장윤옥;정서린
    • 대한가정학회지
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    • 제42권6호
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    • pp.73-88
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    • 2004
  • The purpose of this study was to explore the influences of family resources, i.e. objective resources, perceived adequacy of resources, locus of control, social support, family cohesion, and family adaptability on caregiving stress for dementia elderly in homemakers. The subjects of this study were 141 married women who had cared for dementia elderly. The survey method was a questionnaire. And the data was analyzed by means of Cronbach's, factor analysis, and multiple regression. The main findings were as follows: First, Homemakers' caregiving stress was positively correlated to their academic background and monthly income, but negatively correlated to perceived adequacy of human resources, perceived adequacy of material resource, psychical support resource from relatives, and internal locus of control. Second, caregiving stress of homemakers was affected by family cohesion, monthly income, psychical support resource from relatives, perceived adequacy of human resources, and external locus of control.

실시간 관개수로 수위 모니터링을 활용한 논 관개용수 공급적정성 평가 (Evaluation of Water Supply Adequacy using Real-time Water Level Monitoring System in Paddy Irrigation Canals)

  • 홍은미;남원호;최진용;김진택
    • 한국농공학회논문집
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    • 제56권4호
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    • pp.1-8
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    • 2014
  • Appropriate amount of water supply to paddy fields in proper time is important to achieve efficient agricultural water management. The purpose of this study is to evaluate the irrigation water supply adequacy for paddy fields using water level data in irrigation canals. For the evaluation, the real-time water level data were collected from main canals in the Dongjin irrigation district for 2 years. Using the water level data, delivered irrigation water amounts at the distribution points of each canal were calculated. The water balance model for paddy field was designed considering intermittent irrigation and the irrigation water requirement was estimated. Irrigation water supply adequacy was analyzed from main canals to the irrigation blocks based on the comparison between estimated requirement and delivered irrigation water amounts. From the adequacy analysis, irrigation water supply showed poor management condition in 2012 with low efficiency except the Daepyong canal section, and the adequacy in 2013 was good or fair except the Yongsung canal section. When irrigation water for paddy fields was insufficient, water supply adequacy was affected by irrigation area, but when irrigation water was enough to supply, adequacy was affected by distance from main canal to distribution points. These results of the spatial and temporal dimensions of the irrigation adequacy could be utilized for efficient irrigation water management to improve the temporal uniformity and equity in the water distribution for paddy fields.

은행규제의 세계적 수렴에 대한 고찰 (Rethinking Global Convergence in Bank Regulation)

  • 박인섭
    • 무역상무연구
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    • 제36권
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    • pp.195-262
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    • 2007
  • This paper attempts to assess the Basel Committee's bank supervisory standards and capital adequacy rules, and thereby rethink whether global convergence in banking regulation is desirable. To that end, it seeks to address the impetus for the creation of the Basel Committee, and explore driving forces behind the internationalization of bank regulatory and supervisory standards. Following the historical and theoretical analysis of the internationalization of bank regulatory standards, the movement toward global standards in banking is reviewed. More importantly, this paper seeks to explore the origins of the Basel Accord on bank capital adequacy. To do so, it largely relies on current theories on the process of negotiating the capital adequacy standards in the areas of political science and international political economy. At this point, this study takes a position as a break against the force of international market failure logic that has enjoyed an exceptionally positive reception among economists, political scientists, and legal experts. Nonetheless, it does not intend to freeze the international coordination and cooperation of banking regulation. Given the understanding of the politics behind the creation of the Basel Accord, this paper evaluates the Basel Accord of 1988 and the new capital adequacy framework(Basel II), and then moves beyond the assessment of the capital adequacy standards In doing so, this study draws lessons from Basel in search of a just world order in the global finance.

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Roles of Capital Adequacy and Liquidity to Improve Banking Performance

  • MARGONO, Hery;WARDANI, Mursida Kusuma;SAFITRI, Julia
    • The Journal of Asian Finance, Economics and Business
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    • 제7권11호
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    • pp.75-81
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    • 2020
  • This study aims to empirically test the effect of liquidity and adequacy on bank performance through interest rate risk and credit risk. Capital adequacy and liquidity are variables that can affect the ups and downs of opinion, where the bank's performance in this study is the dependent variable. Good credit distribution can minimize the occurrence of defaults. This study uses banking companies in Indonesia that are listed on the Indonesian stock exchange, with a total number of 43 banking companies, this study however, uses only 30 companies ranging from years 2014 to 2019, primarily due to the availability of the limited data. The data analysis techniques used in this study is PLS-SEM with the WarpPLS application. The research results show that capital adequacy and liquidity has a positive effect on bank performance, interest rate risk and credit risk can mediate capital adequacy on bank performance, interest rate risk can mediate liquidity on bank performance, and interest rate risk has a positive effect on bank performance. However, credit risk can't mediate liquidity on bank performance and credit risk does not have a positive effect on bank performance. This is in line with the commercial loan theory, shiftability theory and the doctrine of anticipated income, which explains how best to give credit, both in longer and the shorter term.

Tissue Adequacy and Safety of Percutaneous Transthoracic Needle Biopsy for Molecular Analysis in Non-Small Cell Lung Cancer: A Systematic Review and Meta-analysis

  • Bo Da Nam;Soon Ho Yoon;Hyunsook Hong;Jung Hwa Hwang;Jin Mo Goo;Suyeon Park
    • Korean Journal of Radiology
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    • 제22권12호
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    • pp.2082-2093
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    • 2021
  • Objective: We conducted a systematic review and meta-analysis of the tissue adequacy and complication rates of percutaneous transthoracic needle biopsy (PTNB) for molecular analysis in patients with non-small cell lung cancer (NSCLC). Materials and Methods: We performed a literature search of the OVID-MEDLINE and Embase databases to identify original studies on the tissue adequacy and complication rates of PTNB for molecular analysis in patients with NSCLC published between January 2005 and January 2020. Inverse variance and random-effects models were used to evaluate and acquire meta-analytic estimates of the outcomes. To explore heterogeneity across the studies, univariable and multivariable metaregression analyses were performed. Results: A total of 21 studies with 2232 biopsies (initial biopsy, 8 studies; rebiopsy after therapy, 13 studies) were included. The pooled rates of tissue adequacy and complications were 89.3% (95% confidence interval [CI]: 85.6%-92.6%; I2 = 0.81) and 17.3% (95% CI: 12.1%-23.1%; I2 = 0.89), respectively. These rates were 93.5% and 22.2% for the initial biopsies and 86.2% and 16.8% for the rebiopsies, respectively. Severe complications, including pneumothorax requiring chest tube placement and massive hemoptysis, occurred in 0.7% of the cases (95% CI: 0%-2.2%; I2 = 0.67). Multivariable meta-regression analysis showed that the tissue adequacy rate was not significantly lower in studies on rebiopsies (p = 0.058). The complication rate was significantly higher in studies that preferentially included older adults (p = 0.001). Conclusion: PTNB demonstrated an average tissue adequacy rate of 89.3% for molecular analysis in patients with NSCLC, with a complication rate of 17.3%. PTNB is a generally safe and effective diagnostic procedure for obtaining tissue samples for molecular analysis in NSCLC. Rebiopsy may be performed actively with an acceptable risk of complications if clinically required.