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특성불안이 높은 성인과 낮은 성인에서 알코올이 정신운동성 수행과 주관적 평가에 미치는 영향
용화영,윤보현,윤진상 大韓神經精神醫學會 1996 신경정신의학 Vol.35 No.5
Objectives : The purpose of this study was to evaluate effects of alcohol on psychomotor performance and subjective assessments in normal adults with high and low trait anxiety. Methods : The subjects consisted of 11 men in each group were tested with two doses of alcohol(0.25g/㎏ and 0.75g/㎏). Blood alcohol concentration(BAC), psychomotor performance(critical flicker fusion threshold, CFFT ; choice reaction time, CRT) and subjective assessment were measured at pre-alcohol baseline and 20, 40, 80, and 160 minutes after intake of alcohol. Results : 1) There was no significant difference in BACs between two groups at any time points after intake of each dose of alcohol. 2) After intake of 0.25g/kg alcohol, high anxiety group, compared to low anxiety group, reported less anxious and more relaxed feelings. In psychomotor performance test, however, there was no significant difference between the two groups. 3) After intake of 0.75g/kg alcohol, CFFT was increased in high anxiety group while it was decreased in low anxiety group. In subjective assessment, only high anxiety group tended to show more positive response. Conclusion : These results imply that alcohol may be more beneficial in individuals with high trait anxiety than those with low trait anxiety in terms of objective performance and subjective feelings. Furthermore, these suggest that the alcohol benefits might contribute to drinking more alcohol and frequently in individuals with high trait-anxiety.
이용화 忠州大學校 2009 한국교통대학교 논문집 Vol.44 No.-
This paper reports on a priority decision making model analysis in order for program directors who are in charge of Corporate Social Contribution to make the optimal decision. This empirical analysis focuses on discovering the most significant area among current various programs of Corporate Social Contribution Activities. The Analytical Hierarchy Process (AHP) is employed to test the priority preference. More specifically, it attempts to demonstrate how the priority decision making model helps providing better choices in Corporate Social Contribution Activities practices. The priority preferences of Corporate Social Contribution Activities programs among corporate social contribution practitioners, PR professors and NGO activists are examined. In conclusion, the priority decision making model for Corporate Social Contribution Activities programs should be integrated as the key part of corporate strategic plan. Moreover, it should be considered as a part of overall social welfare including environmental preservation.
Midazolam의 백서 기관평활근 이완효과와 Flumazenil의 길항작용
윤석화,신용섭,손수창,이원형,김혜자,최세진 충남대학교 의과대학 지역사회의학연구소 1995 충남의대잡지 Vol.22 No.2
Midazolam have been used widely as adjuvants in both regional and general anesthesia and in high risk patients in the intensive care unit. In the present study we evaluated the effect of midazolam and antagonistic effect of flumazenil on isolated rat tracheal preparations mounted for recording isometric contractile force. Trachea smooth muscle were contracted with acetylcholine (10^-5M, Ach) and potassium chloride (40mM KC1). Midazolam 5x10 exp (-6)M and 5x10 exp (-5)M produced dose-dependent relaxation and flumazenil (3.2 x 10 exp (-7)M), central antagonist of benzodiazepine, pretreatment had no significant change midazolaminduced relaxation. Midazolam probably did not relax airway smooth muscle by activatong central benzodiazepine receptors, as flumazenil did not block the concentration-related relaxation of midazolam. Our study suggests that flumazenil may be used satety for asthmatic patients who have been with midazolam, as flumazenil did not antagonize airway relaxation elicited by midazolam.
장기화,우용태 國立 昌原大學校 精報通信硏究所 1998 精報通信論文集 Vol.2 No.-
In this paper, we propose a new type of gateway system for WWW-Oracle interface. It supports various types of relational queries on the WWW such as join between two tables, one level nested queries, ORDER BY and GROUP BY operations in conditional clause. In addition, an application designer can suggest an access method for a table by query selection with a hint option on the WWW. It causes the Oracle optimizer to chose the specified access path. By this function, an application designer can choose more efficient way than the optimizer can determine. The designer can also check the execution time of the SQL statement on the WWW.
강용태,김화석,조용현 東亞大學校 海洋資源硏究所 2002 硏究論文集 Vol.14 No.1
Experimental study of Pilot-plant scale has been performed with ASA system connected with Sand filter, GAC, and RO as wastewater reusing system. As the results of the batch test performance of ASA + Sand filter +GAC connecting with RO, CI^-, COD NH_4-N and PO4-P were over 99% in all cases of 20 bar, 30 bar and 40 bar. Especially, CI^- level was shown with excellent removal rate of over 99%. It was sure that all the items had over 90% removal. 20 bar selected in RO batch test was adopted to continuous test. The results have it that CI^-, COD, NH_4-N, PO4-P and Ca^2+ except for turbidity were over 91%. Through the assessment of wastewater reuse, only the treatment by ASA + sand filter or ASA + Sand filter + GAC system is applicable to toilet flushing or cleaning. Particularly, it is considered that ASA + Sand filter plus RO system is very effective as dyeing industy water which need high water quality. key words : Advanced Step Aeration (ASA) system, Wastewater Reuse, Sand Filter, GAC, RO system.
邊龍聖,洪慶和,金東奭,崔雲行 弘益大學校 1989 弘大論叢 Vol.21 No.2
The purpose of this paper is to improve General Mathematics education programs for engineering students based on an experimental study in the fall semester of 1988. Freshmen classes for General Mathematics course were divided into two groups. One of them, "Special class," was for highly motivated students and the other "Ordinary class," for less motivated students. Both classes had the same basic calculus textbooks. "Special class" students, however, had an extra textbook on elementary linear algebra. Analyzing two examinations and surveys on other university curricula, we concluded that there was no significant difference between two groups. It is suggested that one or two chapters on differential equations and elementary linear algebra should be included in the freshmen general mathematics course.