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        • Pattern of Newspaper Readership: A Korean Case

          Auh, Taik Sup 연세대학교 동서문제연구소 1981 東西硏究 JOURNAL OF EAST AND WEST STUDIES Vol.10 No.1

          This report reviewed some new trends and techniques in newspaper readership research and offered some suggestions for what editors can do to make their newspapers more appealing to their readers. It was argued in the paper that simple readership percentages should not be used as the sole judgmental criterion in deciding which items to push and which to drop. Factor analysis should be employed to find out which items cluster with other items before deciding which ones to cut back or drop. Another model for deciding what to inclued in a newspaper is Philip Meyer's "prioritization" model. The model combines a measure of interest in various subjects with a measure of whether or not such interest is associated with reading the newspaper. Meyer's model looks like this : Meyer argues that subjects in category A, which have relatively high levels of interest and a positive association between interest and readership of the paper, should be watched carefully because they could represent small but important market segments whose coverage should be, at the very least, maintained. Finally, Meyer advocates passing over subjects in category D, where interest is low and what interest there is has little or no asociation with reading the newspaper To draw a comparision with the Meyer's model, the McCombs model looks at readership patterns to infer whether a certain subject is drawing people to newapaper. The Meyer model directly measures the association between interest in a subject and newspaper readership. Future readership studies may utilize both the McCombs and Meyer models in deciding what to cut back or eliminate. That is, one could use the McCombs method to identify which items have low readership and are usually read in combination with other items, and the Meyer method to check on the level of interest in these items and whether this interest is associated with reading the newspaper.

        • SCIESCOPUSKCI등재

          Development of Transient Simulation Code for Pressurized Water Reactors

          Auh, Geun-Sun,Ko, Chang-Seog,Lee, Sung-Jae,Hwang, Dae-Hyun,Kim, Dong-Su,Chae, Sung-Ki Korean Nuclear Society 1987 Nuclear Engineering and Technology Vol.19 No.3

          발전소 과도현상과 비냉각재 상실사고를 모의할 수 있는 가압경수로발전소 모의코드 MCSIM을 개발하였다. 원자로 냉각재계통은 에너지 방정식과 운동량 방정식을 분리 취급하면서 Drift Flux 2상 유동모델, 적분 운동량 방정식 등을 사용하여 모델링하였다. 증기발생기의 모사는 Pot Boiler 모델을 사용하였고, 2차계통을 위해서는 분리 취급된 정상상태 에너지 방정식과 운동량방정식을 핵출력 계산을 위해서는 점 동특성 방정식을 사용하였다. 현재의 코드성능을 시험하기 위해 완전 냉각재 유동상실사고와 제어봉 집합체 인출 사고를 계산하여 그 결과를 원자력 5/6호기 최종 안전 보고서의 결과와 비교하였다. A plant simulation code, MCSIM (Micro-Computer SIMulator), has been developed to simulate plant transient accidents for pressurized water reactors. Reactor coolant system is modeled using decoupled energy and momentum equations, drift flux two-phase flow model and integral momentum equation. A two-fluid pressurizer model is used to simulate the pressurizer dynamics. Pot Boiler model is used for steam generator, steady-state decoupled energy and momentum equations for secondary side system, and point kinetics equations for nuclear power calculation. For test of the present version of MCSIM, complete loss of flow and RCCA withdrawal accidents are calculated with MCSIM. The results are compared with those in FSAR of KNU 5 & 6.

        • KCI등재

          Current Status of Passive Solar Building Applications in the Republic of Korea

          Auh, Paul Chung-Moo 한국태양에너지학회 1987 한국태양에너지학회 논문집 Vol.7 No.2

          In the past few years, the subject of passive heating has been the major area of our concern due to the specific climate conditions prevailing in our region. More recently, however, other important issues such as retrofitting, passive cooling, optimized integration of conservation and passive solar, and daylighting have emerged as the areas of frequent discussions. KIER, the sole R&D organization in solar energy technologies, has accomplished significant results in passive building designs and actual demonstrations of experimental passive buildings. As a result of such endeavor by KIER, the passive solar buildings have been very well received by the Korean public. The current number of passive solar buildings in Korea is well over 1,600 (as of Dec. 1986). In this paper, broad aspects of the present status of passive solar technology utilization in Korea are presented.

        • SCIESCOPUSKCI등재

          Reactor Power Cutback Feasibility to a 12-Finger CEA Drop to Avoid Reactor Trips

          Auh, Geun-Sun,Yoo, Hyung-Keun,Lim, Chae-Joon,Kim, Hee-Cheol,Lee, Sang-Keun Korean Nuclear Society 1995 Nuclear Engineering and Technology Vol.27 No.1

          EPRI URD requires that the reactor be capable of accommodating an unintended CEA drop without initiating a trip and operating at a reduced power with ay single CEA fully inserted. YGN 3 and 4 reactors have 12-finger CEAs, and the CPCS will trip the reactor due to their large reactivities when one of them is dropped at a high power. The ABB-CE reactor power cutback system has been proposed to be used against the 12-Finger CEA drop to avoid the reactor trips. The results of study show that the reactor power cutback can prevent the reactor trips of the 12-Finger CEA drop when the CPCS has enough operating thermal margin (more than 9% for YGN 3&4 Cycle 1). It is noted, however, that the probability of a 12-Finger CEA drop is very low, less than one per 100 reactor years for YGN 3& and System 80$^{+}$ plants.

        • Aligning Benefits with Payments in a Consumer Financing Context - A Test of the Alignment Hypothesis

          Auh Seigyoung,Chuan Fong Shih 한국마케팅과학회 2006 한국마케팅과학회 학술대회 발표 논문집 Vol.- No.-

          '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

          This article extends the literature on consumer financing decisions by drawing on mental accounting and prospect theory. Specifically, the authors test the alignment hypothesis, which states that consumers prefer financing schemes that not only match the length of benefits with payments but also employ corresponding patterns. Through four studies, the authors find general support for the alignment hypothesis.

        • SCIESCOPUSKCI등재

          Margin Benefit Assessment of A Digital Monitoring System for Existing Analog Plants

          Auh, Geun-Sun,Yoon, Tae-Young Korean Nuclear Society 1994 Nuclear Engineering and Technology Vol.26 No.2

          운전중인 Westinghouse형 원자력 발전소에 디지탈 감시계통을 설치하였을 시의 정량적인 여유도 잇점을 계산하였다. 적용된 발전소는 영광 원자력 1호기 6주기이며 참조한 디지탈 감치계통은 ABB-CE 사의 COLSS이다. 고려된 핵연료 설계제한 한계는 DNBR과 LUCA Fq이다. 평가를 위해 기존 CAOC 한계내에서 200가지의 3-D 출력 분포를 계산하였다. 영광 1호기 6주기의 DNB 관련 가장 제한적인 사고인 CEA 인출사고를 해석하였다. 평가결과 DMS를 설치하면 DNB와 LOCA Fq 관점에서 모두 7%출력 증가 효과를 가져올 수 있을 것으로 나타났다. DMS를 설치하면 PCI 한계도 감시할 수 있다. Margin benefits are quantatively assessed when a Digital Monitoring System(DMS) is assumed to be installed to an operating Westinghouse analog type plant. Applied plant and cycle is YongGwang Unit 1 Cycle 6. The referenced digital monitoring system is the COLSS (Core Operating Limit Supervisory System) of ABB-CE. Considered fuel design limits are DNBR and LDCA Fq. 2003-D Power distributions within the present CAOC (Constant Axial Offset Control) limits are calculated for the analysis. The most limiting DNB prevention event of CEA Withdrawal is analyzed with the ROPM (Required OverPower Margin) concept of ABB-CE. The result show that the DMS can bring around 7% more margins for both DNB and LOCA Fq standpoints of view. The DMS can also monitor the PCI (Pellet-Cladding Interaction) limits.

        • SCIESCOPUSKCI등재

          Digital Dynamic Compensation Methods of Rhodium Self-Powered Neutron Detector

          Auh, Geun-Sun Korean Nuclear Society 1994 Nuclear Engineering and Technology Vol.26 No.2

          로듐 자기출력형 중성자계측기에 대하여 3가지 디지탈 동적 보상방법을 개발 및 적용하여 가장 우수한 방법을 제시하였다. 3가지 디지탈 동적 보상방법은 기존 COLSS의 Dominant POL Tustin 방법과 Direct Inversion 방법 및 Kalman Filter 방법이다. 이 논문에서는 D. Hoppe와 R. Maletti의 Direct Inversion 방법을 개선하였으며 Kalman Filter를 이용한 방법을 개발하였다. 3가지 방법론을 비교한 결과 같은 Noise 중가 조건하에서 Step 중성자속 입력에 대한 90% 도달 시간이 각각 28.1초, 17.2초 및 6.5초로 나타나 Kalman Filter 방법이 가장 우수함을 알 수 있었다. The best method is selected among the 3 digital dynamic compensation methods which are developed or applied for the Rhodium self-powered neutron detector. The three digital dynamic compensation methods are the existing Dominant Pol Tustin method of the COLSS(Core Operating Limit Supervisory System), the Direct Inversion method and Kalman Filter method. The Direct Inversion method is an improved method of D. Hoppe and R. Maletti and the Kalman Filter method is developed using the Kalman Filter. Response times of the compensated signals to achieve 90% of a step input are 28.1, 17.2 and 6.5 seconds respectively for the same noise gain telling that the Kalman Filter method is the best amens the 3 methods.

        • KCI등재

          Designing an Interdisciplinary Learning Environment for Conservatory Students: Using the Liberal Arts to Expand Education and Better Support Performance Interpretation

          Auh, Yoonil,Shin, Yeon Sook The Korea Contents Association 2014 International Journal of Contents Vol.10 No.2

          This paper discusses designing an interdisciplinary learning environment to promote learning of the liberal arts for advanced music students in order to expand the boundaries of their education experience beyond the technical mastery of their musical instruments. The paper discusses the utilization of salient features of information, communications, and technology and the use of instructional theory to promote the understanding of how individual pieces of music can be connected to knowledge of the context in which they were created to support the understanding of the relationship between experience in the world and musical composition.

        • SCIESCOPUSKCI등재

          A Steady-State Margin Comparison between Analog and Digital Protection Systems

          Auh, Geun-Sun,Hwang, Dae-Hyun,Kim, Si-Hwan Korean Nuclear Society 1990 Nuclear Engineering and Technology Vol.22 No.1

          아날로그와 디지탈 보호계통의 정상상태 여유도를 비교하였다. 비교된 예는 웨스팅하우스사의 OP Delta T 및 OT Delta T 계통과 CE사의 CPCS 계통이다. 안전해석 방법의 차이에 의한 여유도 영향을 제거하기 위해 Dynamic Offset은 고려하지 않았다. 핵연료봉 중심선의 용융을 방지하는데 있어서 디지탈 보호계통이 아날로그 보호계통보다 약 30% 출력 정도의 운전 여유도를 더 가졌다. DNB를 방지하는데 있어서는 주기말에서는 양 보호계통이 비슷한 여유를 가졌으나 주기초에서는 디지탈 보호계통이 약 10%의 더 많은 운전여유를 가지는 것으로 판단된다. A steady-state margin comparison study was performed between analog and digital protection systems. The systems compared are the thermal overpower and overtemperature delta T system of Westinghouse, and Core Protection Calculator System of Combustion Engineering, Inc. No dynamic offset was considered to eliminate the margin differences by different safety analysis methodologies. The result shows that the digital protection system has about 30% more rated power margin than the analog system in protecting against the fuel rod centerline melting. The digital protection system is shown to have almost same margin with the analog protection system in preventing the DNB at EOC (End of Cycle) even if the digital protection system has about 10% more margin at BOC(Beginning of Cycle).

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