http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
전재호(Jaeho Juhn) 한국산업경영시스템학회 2012 한국산업경영시스템학회지 Vol.35 No.2
In this paper, it is examined how the amount of review time per applicant to a college admission officer system is connected with the performance of the selected students after they enter the college. About five years ago, college admission officers system has been introduced to Korea as a government policy. Thus, for most Korean college, there is not enough number of admission officers, while it takes substantial time to find out whether an applicant has potential ability or not. Thus, it is required to find out some policy alternatives to solve this discrepancy. In this paper, a simulation model is built using System Dynamics theory and simulated to understand the relation between the amount of review time and the performance of the selected students. Finally, some implications and policy suggestions are derived from the simulation results.
도박중독의 동태적 분석: 중독에 이르는 과정과 함의를 중심으로
전재호 ( Juhn Jaeho ) 한국시스템다이내믹스학회 2020 한국시스템다이내믹스 연구 Vol.21 No.1
The purpose of this study is to identify the procedures leading to gambling addiction and its implications. To achieve this goal, a causal map and System Dynamics (SD) simulation model of gambling addiction were constructed firstly. Second, the implications for the current gambling addiction policies were derived using the results of causal map and SD simulation analysis. The implications could be summarized as follows. Primarily, the current policy for developing legal gambling should be changed to policy to control the total amount of gambling and to research on the prevention of gambling addiction. Next, efforts should be made to apply the anti-addiction measures created through the research to the illegal gambling industry.
게임정책 분석: 온라인 게임 등급심사, 게임시간 선택, 확률형 아이템 자율 규제의 인과순환구조 분석을 중심으로
전재호 ( Juhn Jaeho ) 한국시스템다이내믹스학회 2022 한국시스템다이내믹스 연구 Vol.23 No.1
In this study, a causal map analysis is conducted and policy implications are derived for three policies about game culture establishment: Age Rating(AR), Game Time Selection(GTS), and Loot Box Self-regulation(LBS). Since these policies play a regulatory role, they mainly have stabilizing or stagnating feedback loops. However, counterintuitively, it is found that there are also reinforcing feedback loops that can promote the game industry. In other words, AR and GTS can promote the game industry by establishing a healthy game culture, and LBS can develop the game industry through improving the satisfaction of gamers. Other implications, including the age rating through IARC, to weaken or eliminate the stagnating loops inherent in above-mentioned policies are also proposed. Finally, it is suggested to share the results of this study with game industry to improve effectiveness of policies.
전재호(Jaeho Juhn),윤상흠(Ik Sun Lee),이익선(Ik Sun Lee) 한국산업경영시스템학회 2012 한국산업경영시스템학회지 Vol.35 No.1
본 논문은 (1 : 1 : N) 재고모형에 대한 복수제품의 순환생산 및 배송 일정계획을 수립하는 연구를 수행하였다. 세부적으로 공급자가 원자재를 생산자에게 배송하면, 생산자는 순환생산방식을 활용하여 복수의 제품을 생산하여 N 구매자에게 배송하는 상황을 고려하고 있다. 본 연구의 목적은 공급자, 생산자, 구매자를 포함하는 시스템 전체의 비용을 최소화하는 계획을 수립하는 것이다. 최적해가 가지는 몇 가지 특성들을 분석하고, 이를 통해서 단계적인 휴리스틱 절차를 제시할 것이다. 테스트 실험을 통해서 제시된 휴리스틱 절차가 매우 효과적이면서도 효율적이라는 점을 입증하게 될 것이다.
부동산 정책 분석: 문재인 정부의 아파트 분양가, 세금, 대출, 임대차 정책에 대한 인과순환구조 분석을 중심으로
전재호 ( Juhn Jaeho ) 한국시스템다이내믹스학회 2023 한국시스템다이내믹스 연구 Vol.24 No.1
The study aims to explore the cause of the failure of the Moon Jae-in government’s housing policy and derive its implications. Causal map analysis is conducted on the principal housing policies. Through causal map analysis, feedback loops that work as intended by policies (Intended Loop; IL) and others that works oppositely (Opposite Loop; OL) are found. Then, some measures to maintain or strengthen IL and suppress OL are derived. Some of the measures are as follows. First, price regulated apartments must be supplied to right people and builders must be managed to fulfill the supply. Second, official price realization rate should be set cautiously. Third, government should guarantee the return of rental deposit only when the deposit-to-price ratio is low enough. Fourth, to protect tenants, rental business registration policy should be maintained and developed.
유튜브 성장 분석: 유튜브 성장 촉진과 억제의 인과순환구조 분석을 중심으로
전재호 ( Juhn Jaeho ) 한국시스템다이내믹스학회 2021 한국시스템다이내믹스 연구 Vol.22 No.1
This study attempts to identify the structure in which YouTube has been able to grow rapidly. Also, this study seeks to find out the structure that constrains YouTube’s growth. Several entities were involved in YouTube’s growth, so a causal map analysis was used to consider them as a system. The results are as follows. Five partial causal maps and one comprehensive causal map related to YouTube are drawn. A few implications are derived from these causal analysis. First, YouTube’s credibility plays an important role in YouTube growth. Second, the discrimination ability of YouTube algorithms should be improved quickly. Third, if YouTube constrains a YouTuber, detailed explanations are needed on why and how to solve it. Fourth, it is also necessary to consider increasing reliability by improving video recommendation algorithm that only pursue advertising revenue currently. Fifth, YouTube needs to increase the subscription service ratio. Sixth, improving the mobile interface is required to maintain viewing time of YouTube.
인과지도를 활용한 4년제 대학 NCS 도입 활성화 방안 연구
전재호 ( Juhn Jaeho ) 한국시스템다이내믹스학회 2016 한국시스템다이내믹스 연구 Vol.17 No.3
The Korean government has constructed the national competency standards (NCS) rapidly since the year 2013. Also, it has pushed 2-year colleges to adopt NCS-based educational programs and public institutions to hire new employees by using NCS. It expects that NCS will deplete the mismatch between the requirements of employers and the abilities of employees. The purpose of this paper is to find correct accelerating policies for universities to adopt NCS-based educational programs. In order to achieve the purpose, primarily the government policies for NCS were analyzed by using causal map. And then, three accelerating policy recommendations for universities to adopt NCS were drawn by using the results of causal map analysis. The three recommendations are as follows. First, the quality of NCS should be kept highly. Secondly, the NCS-based hiring system of public institutions should also be standardized. Finally, the authorities of universities should be guaranted whenever they make educational programs.
이익선(Ik Sun Lee),전재호(Jaeho Juhn),윤상흠(Sang Hum Yoon) 한국생산관리학회 2006 韓國生産管理學會誌 Vol.17 No.3
본 연구는 주문일정계획문제에서 주문에 포함된 일부제품이 자체 생산되지 않고 외부의 협력업체를 통해 조달되는 경우를 고려하고 있다. 각 주문은 자체생산제품과 외부조달제품으로 구성되고, 자체생산제품에 대해서는 독자적인 생산일정계획이 필요하지만, 외부조달제품의 경우에는 외부에서 생산되며 제품의 도착시점이 바로 조달제품의 생산완료시점이 되는 것이다. 따라서 각 주문이 충족되는 시점은 각 주문에 포함된 모든 제품을 생산 및 조달하여 모두 완비되는 최초시점으로 모델링 된다. 본 연구는 이러한 상황에서 모든 고객주문을 충족시키는데 소요되는 총 가중완료시간(total weighted completion time)을 최소화하기 위한 생산일정계획문제를 다루고 있다. 문제의 분석에서 작업간의 우선순위관계를 규명할 수 있는 우월성질이 제시되고, 이를 바탕으로 분지한계법과 그리디 형태의 휴리스틱을 제안한다. 제안된 우월성질, 휴리스틱, 분지한계법의 성능은 다양한 수치데이터를 활용한 실험을 통해 평가된다. This paper considers a scheduling problem to meet some orders from customers. Each order is composed of two types of products. One product is manufactured by a single facility under make-to-order environment, the other product is supplied from the outside facility(or, contractor), so given as an available time data. The completion time of each order is measured by the time when both of the corresponding products are completed(or, available). The problem is to obtain the optimal sequence of orders to minimize the total weighted completion time. In the problem analysis, we first derive a powerful property to determine the sequence of two consecutive orders. And then, two lower bounds of objective are derived and tested along with the derived property within a branch-and-boundscheme. An efficient heuristic algorithm based on a greedy manner is also developed. The overall performance of the proposed property, branchand-bound and heuristic is evaluated through numerical experiments.