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주재훈,김기석 한국경영과학회 1991 經營 科學 Vol.8 No.1
This paper presents an efficient optimization algorithm for the crude oil tanker scheduling problem. The algorithm consists of two stages. In stage one, all the potentially optimal schedules (called 'candidate schedules') are generated from feasible schedules for each ship. In the second stage, a multiple ship scheduling problem is formulated as 0-1 integer programming problem considering only those candidate schedules. The efficiency of the suggested algorithm was improved by exploiting the special structure of the formulation. The algorithm was illustrated by a numerical example and tested on practical ship scheduling problems.
주재훈,김기석 한국경영과학회 1994 한국경영과학회지 Vol.19 No.2
A generalized network problem is a special class of linear programming problem whose coefficient matrix contains at most two nonzero elements per column. A generalized network problem with 0-1 flow restrictions is called an integer generalized network(IGN) problem. In this paper, we presented a branch and bound algorithm for the IGN that uses network relaxation. To improve the procedure, we develop various strategies, each of which employs different node selection criterion and / or branching variable selection criterion. We test these solution strategies and compare their effiencies with LINDO on 70 randomly generated problems.
기업 경쟁력의 새로운 원천으로써 비즈니스 생태계와 사회적 자본의 역할
주재훈,Matthew M. Shin,Mike Tae-In Eom 한국경영정보학회 2014 한국경영정보학회 학술대회논문집 Vol.2014 No.1
How can business ecosystems be a source of firm's competitiveness? Is corporate social responsibility (CSR) is an investment activity for building sustainable business ecosystems? The purpose of this research is to identify the relationship between CSR, social value, sustainable business ecosystems, and firm's competitiveness by introducing a mediating role of social capital. We conducted depth interviews with seven informants from two domestic firms and four oversea firms. Three propositions were drawn by analyzing qualitative data collected from the interviews and literature review. Various activities creating social value including CSR and CSV (Creating Shared Value) are positively associated with sustainable business ecosystems. Firm accumulates social capital of the business ecosystem through creation of social value. Finally, the social capital of business ecosystem has a positive influence on firm's competitiveness. Implications were suggested for academics and practitioners.
인터넷전문은행의 이용의도에 미치는 영향 요인: 편리성과 사회적 영향의 함의
주재훈 서비스사이언스학회 2018 서비스연구 Vol.8 No.2
Internet-only bank is one of the promising areas of Fintech industry. Kbank and Kakaobank launched services since 2017 in Korea. Experts estimated the younger generation including undergraduate students as target customers in the initial stage of the Internet-only bank in Korea. Thus, it is necessary to investigate factors influencing intention to use the Internet-only bank. Data were collected from undergraduate students studying in Seoul, Pusan, and Gyeongbuk province. The empirical study showed the evidence that four factors such as convenience, social influence, perceived privacy, and unverified risk had a significant influence on intention to use the Internet-only bank. However, economic benefit has no significantly influence on the intention. The present study focused on the influence of convenience and social influence and discussed the issues regarding convenience and social influence in more detail. 인터넷전문은행은 핀테크 산업의 핵심 서비스 분야이다. 2017년 국내에서도 케이뱅크와 카카오뱅크가 영업을 개시하였다. 특히 대학생을 중심으로 한 젊은 층이 초기 단계에서 인터넷전문은행의 목표고객이 될 것으로 예상된다. 인터넷전문은행이 영업을 개시한 이 시점에서 그 이용의 동기요인을 분석하여 이론적 관점은 물론이고 실무적 관점에서 시사점을 이끌어낼 필요가 있다. 따라서 본 연구에서는 대학생을 대상으로 TPB(Theory of Planned Behavior) 모형을 준용하여 인터넷전문은행의 이용의도에 영향을 미치는 요인을 실증분석한다. 분석결과, 사회적 영향과 편리성이 인터넷전문은행의 이용의도에 긍정적 영향을 미치고, 프라이버시와 초기 단계에서 검증되지 않은 전문서비스에 대한 불안과 염려가 부정적 영향을 미치는 것으로 나타났다. 그러나 경제적 혜택은 그 이용의도에 유의적 영향을 미치지 않는 것으로 나타났다. 본 연구에서 왜 편리성과 사회적 영향이 인터넷전문은행의 이용의도에 커다란 영향을 미치는가에 대해 논의하는데 역점을 두었다.