• Journal of the Korean Data and Information Science Society
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• 제26권2호
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• pp.487-493
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• 2015

Time series data sometimes show violation of normal assumptions. For cases where the assumption of normality is untenable, more exible models can be adopted to accommodate heavy tails. The exponential power distribution (EPD) is considered as possible candidate for errors of time series model that may show violation of normal assumption. Besides, the use of exible models for errors like EPD might be able to conduct the robust analysis. In this paper, we especially consider EPD as the exible distribution for errors of autoregressive models. Also, we represent this distribution as scale mixture of uniform and this form enables efficient Bayesian estimation via Markov chain Monte Carlo (MCMC) methods.

• Journal of Periodontal and Implant Science
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• 제45권1호
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• pp.2-7
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• 2015

A fundamental problem in analyzing complex multilevel-structured periodontal data is the violation of independency among the observations, which is an assumption in traditional statistical models (e.g., analysis of variance and ordinary least squares regression). In many cases, aggregation (i.e., mean or sum scores) has been employed to overcome this problem. However, the aggregation approach still exhibits certain limitations, such as a loss of power and detailed information, no cross-level relationship analysis, and the potential for creating an ecological fallacy. In order to handle multilevel-structured data appropriately, mixed effects models have been introduced and employed in dental research using periodontal data. The use of mixed effects models might account for the potential bias due to the violation of the independency assumption as well as provide accurate estimates.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 하계학술대회 논문집 C
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• pp.880-883
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• 1998

In this paper, sensitivity based approach to estimate BITC(bilateral interchange transfer capacity) considering the real power flow control function of FACTS device is presented. The real power flow setting of the FACTS device is adjusted so that it transfer the power flow from the first violation point of transmission capacity to other transmission lines in the power system, thus allowing more power to be transferred from the specified generator bus to the specified load bus. The transfer between the two bus locations is increased from this new operating condition until a violation of transmission capacity limits occurs or until the setting of the FACTS device can no longer be adjusted. The proposed algorithm is illustrated using examples of small and real life power system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 A
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• pp.256-258
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• 2003

Recently, electric power demands tend to be increased continuously. In this situation, current states of power systems must be definitely recognized to operate power systems stably and economically. Also, corrective actions must be performed for the violation of bus voltage and line overload. It is desirable that the situations of violation are promptly removed to operate power systems effectively. This paper deals with the development of guidance system for voltage and overload correction on base case using Generator-Voltage Sensitivity List(GVSL) and Generator Shifter Factor List(GSFL). Also, to show the superiority and economical efficiency of the proposed application, we applied the proposed guidance system to the Kwangyang Steel Works' Power Systems.

• 의료법학
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• 제13권1호
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• pp.91-123
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• 2012

Doctors and patients for the purpose of healing and treatment of disease through the contract will make a relationship. Doctors perform the medical practice for the state and illness of patient. Given that the patient did not cooperate in the doctor's medical practice, it is difficult to achieve the goal of disease healing. If the patient don't cooperate the medical care, and it is linked with a doctor's medical malpractice, patient's violation of obligation in medical cooperation is considered with negligence on the part of patients. However, this negligence should be limited to obvious cases that the patient's behavior is unreasonable although the doctor provides medical information to patients and induced the patient's response. Also, patient's violation of obligation in medical cooperation must result in adjusting the indemnification via a setoff of fault except the cases having causal relationship between doctor's fault and malpractice.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2011년도 제44차 하계학술발표논문집 19권2호
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• pp.149-153
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• 2011

2010년에는 국내에 Smart Phone이 확산되면서, Smart Phone은 단순한 음성통신정보 전달 이외에 기존의 인터넷 PC가 정보를 전달 할 수 있는 전자책, 영화, 음악, 콘텐츠 영역으로 확장되고 있다. 하지만 Smart Phone 사용자들은 멀티미디어 저작권 콘텐츠를 불법으로 이용하고 있다. 또한 이동통신 단말로서 Smart Phone관련 범죄 증거의 생성, 저장된 디지털 증거는 증거의 활용도가 높아 모바일 포렌식 연구가 필요하다. 본 논문에서 Smart Phone에서 저작권 위반 내용들을 전자책, 영화, 음악, 콘텐츠 영역으로 조사한다. 저작권 위반 Smart Phone 증거자료를 추출하고 분석하기 위한 SYN 방식과 JTAG 방식을 연구한다. Smart Phone SYN 방식과 JTAG 방식으로 Smart Phone의 저작권 위반 자료를 추출하여 복원하고, 자료를 분석하였다. 본 연구 결과는 저작권위반 단속 기술 향상과 포렌식 수사 기술 발전에 기여 할 수 있을 것이다.

• 한국광학회:학술대회논문집
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• 한국광학회 2006년도 동계학술발표회 논문집
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• pp.281-282
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• 2006

• 의료법학
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• 제12권2호
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• pp.295-316
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• 2011

If the medical staff privileges, which mean the eligibility to practice at open hospitals, are excluded in the United States, antitrust claims based on the violation of the Sherman Act have been raised a lot. The proliferation of these lawsuits in the United States, which are characterized as antitrust lawsuits, can be understandable situation. The reason is because doctors who don't belong to specific hospitals are seriously damaged, if the medical staff privileges are excluded and doctors cannot use facilities of open hospitals. In order to decide to allow the privileges of certain doctors, hospitals have to rely on peer review to maintain high quality of medical services, and it is not easy to find alternative of peer review in the professional areas like healthcare. However, there are possibilities that members of the peer review can abuse power to unfairly exclude privileges of potential competitors. In this sense, it is asserted in the U.S. antitrust lawsuits that the restraint of medical staff privilege can be the illegal restraint of trade in violation of section 1 of Sherman Act and can be monopolization or an attempt to monopoly by hospitals in violation of section 2 of Sherman Act. As Korea adopted open hospital system quite recently, there is still no case related with the exclusion of medical staff privileges. However, medical staff privilege system of Korea is not different from that of the United States in principle. Thus, the U.S. jurisprudence on the exclusion of medical staff privileges can be referred in the interpretation of "practice that interferes with or restricts the activities or contents of the business" based on Article 19.1.9 of Monopoly Regulation and Fair Trade Law of Korea.

• Asian Pacific Journal of Cancer Prevention
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• 제17권9호
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• pp.4341-4347
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• 2016

Background: Patient safety is one of the key components of nursing care for cancer cases. Valid and reliable context-based instruments are necessary for accurate evaluation of patient safety in oncology units. The aim of the present study was to develop and evaluate the psychometric properties of the Patient Safety Violation Scale in medical oncology units in Iran. Materials and Methods: In this methodological study, a pool of 58 items was generated through reviewing the existing literature. The validity of the 58-item scale was assessed through calculating impact score, content validity ratio, and content validity index for its items as well as conducting exploratory factor analysis. The reliability of the scale was evaluated by assessing its internal consistency and testretest stability. Study sample consisted of 300 oncology nurses who were recruited from thirteen teaching hospitals affiliated to Tehran University of Medical Sciences, Tehran, Iran. Results: Sixteen items were excluded from the scale due to having low impact scores, content validity ratios, or content validity indices. In exploratory factor analysis, the remaining 42 items were loaded on five factors including patient fall, verification of patientidentity, harm during care delivery, delay in care delivery, and medication errors. These five factors explained 62% of the total variance. The Cronbach's alpha of the scale and the test-retest interclass correlation coefficient were equal to 0.933 and 0.92, respectively. Conclusions: The 42-item Patient Safety Violation Scale is a simple and short scale which has acceptable validity and reliability. Consequently, it can be used for assessing patient safety in clinical settings such as medical oncology units and for research projects.

• 대한교통학회지
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• 제28권4호
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• pp.61-73
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• 2010

본 연구는 승용차요일제에 참여한 운전자를 대상으로 승용차요일제를 준수하고 위반하는데 미치는 영향을 분석하고 그 중에서 인센티브 혜택을 받았던 운전자들을 대상으로 인센티브에 대한 만족도에 영향을 미치는 요인을 분석하였다. 그 결과 행정구역인 동단위통행 에너지 소비량이 높은 지역에 거주하고, 버스정류장당 잠재이용수요가 낮은 지역에 거주하며, 주택호수당 승용차통행발생량이 낮은 지역에 거주하는 운전자일수록 승용차요일제를 위반할 확률이 높으며, 교통정책 중에 버스노선조정과 확충을 최우선으로 추진해야한다고 판단하는 운전자일수록, 한 달 평균 차량운영비가 높은 운전자일수록, 유류비 증가분이 5~10% 인상되어도 적극적으로 참여하지 않겠다고 응답한 운전자일수록 위반할 확률이 높게 추정되었다. 인센티브 만족도 분석은 혼잡통행료 요금을 50% 감면하는 현제도에 대하여 분석하였는데, 주택호수당 승용차통행발생량이 높은 지역에 거주하고, 인구1인당 발생통행량이 낮은 지역에 거주하는 운전자일수록 만족도를 높게 평가하였으며, 승용차요일제에 운휴일에 이용하는 대체교통수단이 버스이고 승용차요일제 참가이유가 인센티브 혜택을 받기 위함이 아니었던 운전자일수록 만족도가 높게 추정되었다.