• Industrial Engineering and Management Systems
• /
• 제14권1호
• /
• pp.32-43
• /
• 2015

This study suggests an electronic brokerage system that has the capability of efficiently matching dispatching delivery tasks with trucks. In the brokerage system, individual truck drivers and shippers are allowed to participate in the dispatching process through the internet or wireless communication. An auction-based dispatching method for the electronic brokerage system is suggested. The basic rationale of the auction-based dispatching method-which is a distributed decision-making process-is discussed. The performance of the suggested algorithms is evaluated by a simulation study.

• 한국정보처리학회논문지
• /
• 제7권5S호
• /
• pp.1687-1695
• /
• 2000

Recently, many researchers have tried to establish EC framework EC framework for automated contract and brokerage using agent technologies in electronic commerce. Traditional researches, however, often enforced the user's participations during the automated brokerage process of agents an did not supported the procedures and methodologies for satisfying various user's requirements. In this paper, we propose a brokerge framework based on multi-agent to overcome the defects of the previous researches. For the optimal brokerage, the proposed framework is divided into tow layers, which are called competition layer and constraint satisfaction layer. The Agents process behaviors of brokerage through two layers accroding to th proposed message driven communication protocol. W also apply CSP (Constraint Satisfaction Problems) techniques to brokerage process to satisfy various preferential requirements from the user. That is, e model the relationship between buyer agents and seller agents using CSP and propose efficient CSP models for the optimal brokerage as the types of brokerage. Finally, e implemented prototype systems applying the proposed framework and showed the efficiency of he proposed framwork with the experimental results.

• 신재생에너지
• /
• 제18권3호
• /
• pp.32-42
• /
• 2022

Rapid spread of intermittent renewable energy has amplified the instability and uncertainty of power systems. The Korea Power Exchange (KPX) promoted efficient management by opening the power brokerage market in 2019. By combining small-scale intermittent renewable energy with a flexible facility through the power brokerage market, the KPX aims to develop a virtual power plant system that will allow the conversion of existing intermittent renewable energy into collective power plants. However, the participation rate of renewable power owners in the power brokerage market is relatively low because other markets such as the small solar power contract market or the Korea Electric Power Corporation power purchase agreement are more profitable. In this study, we used a choice experiment to determine the attributes affecting the participation rate in the power brokerage market for 113 renewable power owners and estimate the value of the power brokerage market. According to the estimation results, a low smart meter installation cost, low profit variations, long contract periods, and few clearances increased the probability of participation. Moreover, the average value of the power brokerage market was estimated to be 2.63 million KRW per power owner.

• 한국전자통신학회논문지
• /
• 제7권2호
• /
• pp.357-364
• /
• 2012

본 연구는 고객이 부동산중개서비스 품질요인을 어떻게 평가하며, 중요한 품질요인으로 선호하는지에 관해 연구한 내용이다. 부동산중개서비스 품질요인으로 중개업자의 전문지식, 중개업자의 영업능력, 중개업자의 책임의식, 중개사무소의 입지, 프랜차이즈 가맹여부를 선정하였다. 연구결과를 살펴보면, 고객들은 다섯 가지 부동산중개서비스 품질요인 중 중개업자의 책임의식을 가장 중요한 품질요인으로 선호하는 것으로 분석되었으며, 그 다음으로 중개업자의 전문지식, 중개업자의 영업능력, 중개사무소의 입지, 프랜차이즈 가맹여부 순으로 분석되었다. 본 연구의 결과에서 보듯 중개업자는 중개업자로서의 책임의식과 전문지식을 향상시키는 데 노력해야 하며, 친절한 서비스와 적극적 중개행위로 영업능력을 향상시켜야 할 것이다. 중개사무소의 입지는 지속적인 홍보가 중요하다고 보여 지며, 프랜차이즈 가맹업소의 효율적인 활용을 위해서는 인터넷 정보망의 개선이 필요하다고 보여 진다. 본 논문은 부동산중개 계약을 경험한 고객들이 어떤 서비스를 필요로 하는지를 알아보기 위해 직접 면담을 통해 얻은 자료를 실증적으로 분석한 결과이다. 따라서 국토해양부의 업무관련부서와 중개협회에서는 본 자료를 참고하여 대책을 강구하는데 조금이나마 기여하였으면 한다. 아울러 중개업계와 중개업자들 스스로 경쟁에 치우쳐 한 치 앞만 보지 말고 중개업의 발전을 위해 지속적으로 노력하여야 할 것이다.

• 산업공학
• /
• 제18권4호
• /
• pp.390-401
• /
• 2005

In this paper, we propose an efficient internet-based logistics brokerage concept which can overcome the weakness of the traditional off-line method to intermediate between vehicle owners and shippers for matching empty vehicles and freights. For defining a business model based on the new concept and implementing an information system, it is necessary to analyze the business process for the internet-based logistics brokerage using a modeling methodology. In this paper, we analyze the logistics brokerage process using the UN/CEFACT Modeling Methodology (UMM) being utilized as a standard modeling methodology in the area of electronic commerce. After analyzing the business process, we can expect that the UMM can be used as a useful tool for modeling the business process of electronic commerce in which the description of the collaborative work is very important.

• 한국전자통신학회논문지
• /
• 제5권6호
• /
• pp.657-663
• /
• 2010

본 연구는 부동산중개업을 하는데 필요한 중요 구성요소를 도출하여 서비스 가치, 고객의 재이용의도, 구전효과와의 관계를 검증하여 고객들이 원하는 구성요소가 무엇인지를 분석하였다. 그 결과 중개업자의 능력과 중개업자의 신뢰성, 중개업소의 위치가 중요한 구성요소임을 검증한 반면 중개업소의 환경은 그다지 중요하지 않는 것으로 검증되었다. 따라서 고객들이 생각하는 가장 중요한 요소는 중개업자의 능력이므로 이에 대한 대비책 강구가 필요하였다.

• Management Science and Financial Engineering
• /
• 제13권1호
• /
• pp.93-113
• /
• 2007

In the previous research, we considered a logistics brokerage problem with the objective of minimizing total transportation lead time of freights in a logistics e-marketplace, in which a logistics brokerage agent intermediates empty vehicles and freights registered by car owners and shippers [7]. However, in the logistics e-marketplace, transportation due date tardiness is more important than the transportation lead time, since transportation service level is critically determined by whether the due date is met or not. Therefore, in this paper, we deal with the logistics brokerage problem with the objective of minimizing total tardiness of freights. Hungarian method based matching algorithms, real time matching(RTM), periodic matching(PM), and fixed matching(FM), are used for solving the problem considered in this paper. In order to test performance of the proposed algorithms, we perform computational experiments on a various problem instances. The results show that the waiting-and-matching algorithms, PM and FM, also give better performance than real time matching strategy, RTM, for the total tardiness minimization problem as the algorithms did for the total lead time minimization problem.

• 산업공학
• /
• 제23권2호
• /
• pp.164-175
• /
• 2010

In logistics e-marketplaces, brokerage agents intermediate empty vehicles and freights registered by car owners and shippers. In the previous research, we proposed constant periodic/fixed matching algorithms for the logistics brokerage agents with the objective of minimizing the total transportation lead time and the transportation due date tardiness of freights(Jeong, 2004; Jeong, 2007). However, the constant type algorithms cannot consider changes in the balance status of an e-marketplace, i.e. the difference between the numbers of freights and vehicles to wait for matching, because they use non-changing matching periods and amounts. In this paper, we propose variable type algorithms for the logistics brokerage agent, in which the matching periods and amounts are changed continuously by considering the balance status between the freights and vehicles. In order to compare performance of the variable type algorithms to the previous constant type algorithms, we carried out computational experiments on various problem instances. The results show that the variable type algorithms give better performance than the constant type algorithms. We can expect that the logistics brokerage agents can improve their performance by using the proposed variable periodic/fixed matching algorithms.

• 디지털융복합연구
• /
• 제14권6호
• /
• pp.151-156
• /
• 2016

본 연구의 목적은 선행연구를 통해 도출한 부동산중개서비스품질 요소들 중 핵심적인 부동산중개서비스품질 요인을 찾아내고 이들 요인들의 재이용의도에 대한 관련성 정도를 파악하는 것이다. 이를 위해 본 연구에서는 부동산중개서비스품질 변수(전문지식, 태도, 상호작용)와 신뢰 및 재이용의도 정도를 포함한 설문을 작성하여 부동산중개사무소를 이용한 경험자를 대상으로 설문조사를 통해 자료를 수집하고, 이 자료를 이용하여 탐색적 요인분석과 구조방정식모형을 이용한 확인적 요인분석을 실시하였다. 분석결과 상호작용은 신뢰에 양의 영향을 미치고 신뢰는 다시 재이용의도에 양의 영향을 미치고 있으며 동시에 상호작용은 재이용의도에 직접적으로도 양의 영향을 미치는 것으로 나타났다. 그러므로 본 분석결과, 부동산중개사무소의 경영자는 고객의 재방문의도를 높이기 위해 부동산중개서비스품질 요인들 중 상호작용에 관심을 두어야함을 알 수 있다. 본 연구를 위한 설문을 전국규모로 하여 분석결과의 일반화는 향후연구과제로 남긴다.

• 산업공학
• /
• 제16권4호
• /
• pp.473-484
• /
• 2003

In this paper we deal with the logistics brokerage process in which a logistics agent intermediates between vehicle owners and shippers for matching empty vehicles and freights. Based on the Multi-Criteria Decision Making (MCDM) methodology, the proposed agent system matches the most preferred empty vehicle to the shipper and the most preferred freight to the vehicle owner. In the proposed agent system, an MCDM based sensitivity analysis is also used for supporting decision makers under negotiations. Among various MCDM methodologies, Analytic Hierarchy Process (AHP) is utilized in this paper. Although AHP is one of the most popular MCDM methodologies, AHP needs a number of pair-wise comparisons for assessing alternatives and hence may give excessive decision making burden to the decision makers. In this paper, in order to reduce the decision making burden, a preference function based estimation method is proposed. We can expect that the MCDM based logistics brokerage agent can be used as an efficient and effective tool for e-logistics marketplaces on the internet.