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A DATABASE FOR HUMAN PERFORMANCE UNDERSIMULATED EMERGENCIES OF NUCLEAR POWERPLANTS
박진균,정원대 한국원자력학회 2005 Nuclear Engineering and Technology Vol.37 No.5
Reliable human performance is a prerequisite in securing the safety of complicated process systems such as nuclear power plants. However, the amount of available knowledge that can explain why operators deviate from an expected performance level is so small because of the infrequency of real accidents. Therefore, in this study, a database that contains a set of useful information extracted from simulated emergencies was developed in order to provide important clues for understanding the change of operators’ performance under stressful conditions (i.e., real accidents). The database was developed under Microsoft WindowsTM environment using Microsoft Access 97TM and Microsoft Visual Basic 6.0TM. In the database, operators’ performance data obtained from the analysis of over 100 audio-visual records for simulated emergencies were stored using twenty kinds of distinctive data fields. A total of ten kinds of operators’ performance data are available from the developed database. Although it is still difficult to predict operators’ performance under stressful conditions based on the results of simulated emergencies, simulation studies remain the most feasible way to scrutinize performance. Accordingly, it is expected that the performance data of this study will provide a concrete foundation for understanding the change of operators’ performance in emergency situations.
박진균,전호준,김재환,김남철,박성규,이승우,이용석 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.5
Probabilistic safety assessments (PSA) have been used for several decades to visualize the risk level ofcommercial nuclear power plants (NPPs). Since the role of a human reliability analysis (HRA) is to providehuman error probabilities for safety critical tasks to support PSA, PSA quality is strongly affected by HRAquality. Therefore, it is important to understand the underlying limitations or problems of HRA techniques. For this reason, this study conducted a survey among 14 subject matter experts who representthe HRA community of domestic Korean NPPs. As a result, five significant HRA issues were identified: (1)providing a technical basis for the K-HRA (Korean HRA) method, and developing dedicated HRA methodsapplicable to (2) diverse external events to support Level 1 PSA, (3) digital environments, (4) mobileequipment, and (5) severe accident management guideline tasks to support Level 2 PSA. In addition, anHRA method to support multi-unit PSA was emphasized because it plays an important role in theevaluation of site risk, which is one of the hottest current issues. It is believed that creating such a catalogof prioritized issues will be a good indication of research direction to improve HRA and therefore PSAquality.
박진균,김희은,장인석 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.6
The contribution of degraded human performance (e.g., human errors) is significant for the safety ofdiverse social-technical systems. Therefore, it is crucial to understand when and why the performance ofhuman operators could be degraded. In this study, the occurrence probability of human errors wasempirically estimated based on the complexity of proceduralized tasks. To this end, Logistic regressionanalysis was conducted to correlate TACOM (Task Complexity) scores with human errors collected fromthe full-scope training simulator of nuclear power plants equipped with analog devices (analog environment). As a result, it was observed that the occurrence probability of both errors of commission anderrors of omission can be soundly estimated by TACOM scores. Since the effect of diverse performanceinfluencing factors on the occurrence probabilities of human errors could be soundly distinguished byTACOM scores, it is also expected that TACOM scores can be used as a tool to explain when and why theperformance of human operators starts to be degraded
후두개비대의 경부측면 X선사진에서 Three Lines 소견
박진균 대한영상의학회 1991 대한영상의학회지 Vol.27 No.3
On a neck lateral radiograph of normal person with the neck in full extension and with the best inspiratory effort, we could demonstrate three straight lines in the epiglottic area. The first line was the anterior margin of the epiglottis, which was well enhanced by air contrast in the vallecula. The second line was the posterior margin of the epiglottis, enhanced by air contrast in the larynx. The third line was the aryepiglottic fole. The purpose of this article is to provide objective signs for prompt recognition of epiglottic enlargement. We studied 150 cases without epiglottic enlargement and 10 cases with epiglottic enlargement. The result were as follows: The three lines were clearly seen as straight lines in 150 cases without epiglottic enlaargement. In 10 cases with epiglottic enlargement, line I showed obliteration(8) and anterior bulging (2), line II showed posterior bulging(7), blurring(2), and irregularity(1), and line III showed posteroproximal bulging(7) and irregularity(3). The causes of epiglottic enlargement were acute epiglottitis(7), hematoma(1), penicillin allergy(1), and carcinoma(1). In conclusion, any change in the three lines can allow the radiologist or emergency room physician to accurately suspect and alert the clinician to diagnose acute epiglottitis or other causes of epiglottic enlargement.
박진균 한국사립대학교 도서관협의회 2011 사대도협회지 Vol.12 No.-
본 연구는 정보공유공간에 대한 이용자 연구이며 다음과 같은 목적을 가지고 있다. 첫째, 정보공유공간 이용 행태 분석을 통하여 정보공유공간 설치 목적과 이용 행태가 일치 하는지 살펴보았으며 둘째, 정보공유공간을 이용하는 이용자의 성별, 신분별 특성에 따라 이용 행태와 만족도에 차이가 있는지 살펴보았다. 셋째, 이용자 만족도 조사를 통하여 이용자 만족도에 영향을 미치는 요인을 분석하고 만족도간의 관계 분석을 통하여 만족도를 높일 수 있는 방안을 살펴보았다.
"한국판 학령전기 기질성격검사[K-psTCI]" 의 신뢰도 및 타당도 검사
박진균,김지웅,기선완,신의진 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.4
Objectives : The purpose of this study was to evaluate the reliability and validity of the Korean version of Preschool Temperament and Character Inventory (K-psTCI), a questionnaire based on Cloninger's seven-factor model of personality. Methods : The psTCI was translated into Korean and administered to 266 children aged 2-6 years. α test-retest study of the K-psTCI was conducted across a 4-month interval, Internal consistency was calculated by Cronbach a. Test-retest and reliability was analyzed by Pearson correlation analysis. Factor analyses for the temperament and character dimensions were performed using principal component analysis, rotating factors by varimax. The psTCI scores of Korean and United States preschoolers were compared Results : Cronbach α values for the K-psTCI scales ranged from .62 to .78 for each dimensions. Test-retest correlations (r) ranged from .50 to .77 for each dimensions. Explorative factor analysis with the condition of eigenvalue greater than 2 produced four factors for the temperament items and three factors for the character items like the US original version of psTCI. Through factor analyses, five items in the K-psTCI were categorized differently from the US version of psTCI. Korean preschoolers had higher mean scores on Cooperativeness (CO) in males as compared to a sample of US preschoolers. Conclusion : The results of this study suggests that the Korean preschool TCI is satisfactory in reliability and validity.