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박재훈(Jaehun Park),박여삼(Yeosam Park),유재규(Jaekyu Yoo),정영식(Youngsik Jeong),한성국(Sungkook Han) 한국정보과학회 2007 한국정보과학회 학술발표논문집 Vol.34 No.1C
현재의 웹 서비스 표준 기술은 XML, SOAP, WSDL, 그리고 UDDI를 중심으로 매우 기본적인 상호작용 모델을 가지고 있다. 위의 기술들을 이용해 단일 웹 서비스에 대한 정의와 비즈니스 레지스트리에 등록된 웹 서비스를 이용할 수 있다. 현재 일반적으로 개발되고 사용되고 있는 웹 서비스는 사용자의 요청이 발생하면 작업처리의 결과를 반환할 때까지 기다리는 동기적인 방식을 사용하고 있다. 즉, 사용자가 처리요청을 하면 그 결과가 반환될 때까지 기다리는 동안 손실이 발생하게 된다. 본 논문에서는 동기식 웹 서비스로 인해 발생할 수 있는 손실을 최소화 할 수 있는 비동기 웹 서비스를 시스템에 접목한다. 간단한 사칙연산을 동시에 비동기 방식으로 호출하는 웹 서비스의 구현을 통해 다른 영역에도 적용할 수 있는 기반 시스템을 구축한다.
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박재훈(Jaehun Park),김용정(Yong-Jeong Kim) 한국무역연구원 2020 무역연구 Vol.16 No.1
Purpose- The aim of this study is to suggest the diversification model for the growth of trucking companies through actual case research which have previously proceeded the diversification under the unique situation of Korea. Design/methodology/approach- This study delves into two real cases of trucking companies and tracking their progress relative to their business diversification using unique corporate growth strategies. The case approach qualitative research methodology was used including site visits, and in-depth interviews with the key informants. Findings- Results of the case study reveal that, the trucking companies have demonstrated strength in promoting business diversification specializing in the function of transportation as its core competence and this is where the growth strategy of the company is focused on. It was determined that business diversification progressed towards route cargo transportation, then parcel delivery service and eventually did international express delivery. Research implications or Originality- The case study presents evidence of a business model showing the use of an effective growth strategy of a trucking company through diversification. This study has suggested the orientation of logistics diversification of trucking companies corresponding with the reality based on cases of diversification, and it has the meaning in which it provides the foundation to growth strategy of trucking companies in future.
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Multi-Criteria ABC Inventory Classification Using the Cross-Efficiency Method in DEA
Jaehun Park(박재훈),Hyerim Bae(배혜림),Sungmook Lim(임성묵) 대한산업공학회 2011 대한산업공학회지 Vol.37 No.4
Multi-criteria ABC inventory classification, which aims to classify inventory items by considering more than one criterion, is one of the most widely employed techniques for inventory control. The weighted linear optimization (WLO) model proposed by Ramanathan (2006) solves the problem of multi-criteria ABC inventory classification by generating a set of criterion weights for each inventory item and assigning a normalized score to the item for ABC analysis. However, the WLO model has some limitations. First, many inventory items can share the same optimal score, which can hinder a precise classification of inventory items. Second, the model allows too much flexibility in weighting multiple criteria; each item is allowed to choose its own weights so that it can maximize its score. As a result, if an item dominates the others in terms of a certain criterion, it may be classified into a higher class regardless of other criteria by assigning an overwhelming weight to the criterion. Consequently, an item with a high value in an unimportant criterion and low values in others may be inappropriately classified as class A, leading to an inaccurate classification of inventory items. To overcome these shortcomings, we extend the WLO model by using the cross-efficiency method in data envelopment analysis. We claim that the proposed model can provide a more reasonable and accurate classification of inventory items by mitigating the adverse effect of flexibility in the choice of weights and yielding a unique ordering of inventory items.
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한국뷰티산업(K-Beauty)의 성장과정 고찰과 발전방향에 대한 소고(小考)
박재훈 ( Jaehun Park ),이주희 ( Ju Hee Lee ),김용정 ( Yong Jeong Kim ),송영욱 ( Young Wook Song ) 한국유통물류정책학회 2020 유통물류연구 Vol.7 No.1
한국의 경제발전과 글로벌 한류열풍으로 한국뷰티산업(K-Beauty)에 대한 세계적인 관심도 증가하고 있다. 따라서 본 연구는 시기적으로 그 중요성이 높아지고 있는 뷰티산업을 제조와 서비스 분야로 구분하여 실태를 진단하고 현실성 있는 발전방향을 제시한다. 연구목적에 부합하는 실효성 있는 연구를 위해서 연구방법은 질적인 방법에 의한 연구가 적합할 것으로 판단된다. 따라서 뷰티산업의 현장방문을 통해 화장품 및 미용업체의 전문가를 대상으로 개별 심층인터뷰 (In-depth Interview)를 진행하였다. 연구결과, 화장품제조업 분야의 전문가 인터뷰에서는 해외기업과의 제휴와 다양한 추출기법을 접목하여 독창적인 원료개발, 생산설비 자동화와 공정개선으로 비용절감, 일관된 제품성상의 유지와 품질적합성을 위한 철저한 품질관리, 전문물류업체와의 제휴를 통해 납기의 신뢰성 보장 등이 중요한 것으로 식별되었다. 그리고 미용서비스업 분야의 전문가 인터뷰에서는 종사원 근무환경 미흡, 감정노동, 높은 이직률, 서비스 비즈니스모델로서 수익구조의 취약성, 뷰티산업 성장을 위한 실효성 있는 법률체계 미비와 같은 문제점의 해결을 중요하게 생각하고 있었다. 본 연구의 전문가 인터뷰결과를 활용한다면 정부와 기관, 뷰티업계, 그리고 관련 단체에서 뷰티산업 발전을 위한 실효성 있는 전략방향 수립을 위해 어떠한 부분에 중점을 두어야 하는지에 대한 시사점을 줄 수 있을 것이다. 또한 본 연구는 그동안 학술적으로 연구가 활성화되지 않았던 분야인 뷰티산업을 대상으로 제조와 서비스 부문으로 구분하고 그 성장과정을 고찰하여 시기적으로 부합하는 실효성 있는 발전방향의 토대를 제시하고자 했다는 점에 그 의미가 있다. Korea’s beauty industry is a future growth sector that is evaluated to create high value-added products with a high level of synergy with the national interest aligned with the Korean culture, art and tourism industries. The purpose of this study is to present concrete directions for the development of Korea’s beauty industry fitting the current Korean circumstances. This study succinctly examines the experts’ views on the beauty industry. The research methodology is to select managers from the representative cosmetic and beauty treatment firms in Korea, aims to apply the qualitative research methodology through the site visit, and an in-depth interview with these experts. First of all, the result of cosmetic field shows that the crucial factors are listed such as product creativity, efficacy effect, raw material price, and suitability to specification. It is an overall consensus that the product quality is the most important factor due to cosmetic’s natural features. Branded companies regard creativity as the most important factor from the marketing point of view; thus, it is necessary to offer raw materials with patents and monopolistic supply. The result of beauty treatment field interviews proposes improving employees’ working conditions and implementing institutional devices such as consumption ethics and fair trade rights to protect employees from emotionally-offended labor, and establishing action guidelines and internal regulations to protect employees from customers. Additionally, this study proposes developing programs to manage employees’ level of stress. This study contributes to help grasp key critical issues as it analyzes opinions of beauty industry experts through in-depth interview; as such, the result of the analysis is effectively applicable to the industrial practice. Also, it is timely and meaningful for governmental policy makers in that this research presents the directions of effective developmental strategy.
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Jaehun Park(박재훈),Sungmook Lim(임성묵),Hyerim Bae(배혜림) 대한산업공학회 2014 대한산업공학회지 Vol.40 No.6
Stepwise efficiency improvement in data envelopment analysis (DEA)-based benchmarking is a realistic and effective method by which inefficient decision making units (DMUs) can choose benchmarks in a stepwise manner and, thereby, effect gradual performance improvement. Most of the previous research relevant to stepwise efficiency improvement has focused primarily on how to stratify DMUs into multiple layers and how to select immediate benchmark targets in leading levels for lagging-level DMUs. It can be said that the sequence of benchmark targets was constructed in a myopic way, which can limit its effectiveness. To address this issue, this paper proposes an optimization approach to the construction of a sequence of benchmarks in DEA-based benchmarking, wherein two optimization criteria are employed : similarity of input-output use patterns, and proximity of input-output use levels between DMUs. To illustrate the proposed method, we applied it to the benchmarking of 23 national universities in South Korea.
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