워크플로우관리시스템 (Workflow Management System, WFMS)은 기업의 비즈니스 프로세스를 컴퓨터화하고 이를 자동으로 실행해주는 소프트웨어이다. BPR 이후 계속된 기업의 프로세스에 대한 관심은 WFMS의 중요성을 부각시켜주었으며, 최근에는 ERP, CRM, EAI 등과 같은 기업 정보시스템의 핵심모듈로서 기존 시스템 통합의 필요성을 널리 인정받고 있다. 본 논문에서는 먼저 WFMS의 소개를 통해 WFMS의 이해를 돕고, 이를 토대로 그 필요성과 중요성을 설명하고자 한다. 또한, WFMS가 가지는 장점을 현재 국내외 워크플로우 시스템의 현황을 통해 살펴보고, 저자들의 다년간 연구, 개발 경험을 토대로 한 WFMS의 연구분야를 소개한다. 이를 통해, 앞으로 WFMS의 향후 전망과 정보시스템의 미래를 조망하는 것이 본 논문의 목표이다.

The development of information communication technology leads the growth of logistic industry including delivery service as well as electronic commerce. The researchers predict that it will be still improving for the next several years. The logistic information system of railroad courier has been growing for a long time with small-package delivery transportation which is similar to the land-road delivery system. Despite of the long-time growth, it is recently in pain of the great loss since the 1990's, due to the failure to satisfy the customer's need for door-to-door delivery service. But the logistic information system of railroad still has the great potential. There are so many benefits such as timeliness, Punctuality, speed, multi-node storage base, transportation efficiency, energy frugality, environmental sociability, and so on. If the railroad logistic system plays a role of a portion of the nation-wide logistic with other logistic system, the synergy through the balancing logistic will also get much of international competitive advantages. So the objective of this research is to design the model and prototype of the web-based logistic system from which railroad service provider(Korean National Railroad), delivery service providers, and the customers can share the best effective delivery information.

A systematic construction and re-use of technology related to the product development and production has been the most important for the semiconductor industry dependent on process and equipment. Therefore, numerous outputs in the form of paper has been produced in the process of information management ranging from the creation to recycling and disposal of technologies. In this research, the technology and documents necessary for the business management in the field of semiconductor manufacturing were classified in an effort to solve problems while the modeling of document management architecture at the enterprise level was performed by properly setting up the security system to prevent the unauthorized disclosure of the product development technology to the third parties. Especially, the product and process specification are designed in such a way as to ensure a real-time response in interface with the production system in order to shorten the development lead-time and improve the productivity. This paper is to discuss the modeling approach, the strategy to construct the system and its results.

본 연구는 통합생산시스템의 정비정책에 따른 시스템 가용 도를 비교 분석한 연구로서 시스템의 평균 고장기간(MTBF)과 정비정책에 따른 시스템 가용 도를 산정하고 최적 정비정책을 수립하는데 목적을 두고 있다. 시스템가용도와 시스템 생산능력을 산정을 위한 시뮬레이션모델을 개발하고 이를 위한 전산프로그램을 개발하여 사용하였다. 사용자를 위한 일련의 사례를 들고 각 정비정책에 따른 시스템 가용도 산정 결과를 보였다.

This study is concerned with the development of efficient p-median approach to nondegenerate cell formation(CF) in group technology(GT) manufacturing. Unlike most of existing CF methodologies allowing degenerate cells or families that contains no parts or machines, this study attempts to find cell configuration where each machine cell contains at least two or more machines processing at least two or more parts so as to fully utilize the similarity in designing and processing parts. Nondegenerate CF seeks to minimize both the exceptional elements outside the diagonal block and the voids within the diagonal block. To find nondegenerate cells, a two-phase p-median methodology is proposed. In phase 1, the classical p-median model is implemented to find initial cells. In phase 2, bottleneck machines and parts are reassigned until no further degenerate cells and families are found. Test results on moderately medium-sized CF problems show the substantial efficiency of the proposed approach.

Today enterprises are bringing forward the strong needs for the Global Work Space that is able to realize the collaboration of the virtual enterprise in order to achieve the rapid entrance to market, the quality improvement as well as the cost reduction of their new products. Especially, they are building the efficient Product Management Infrastructure in parallel with the real-time knowledge management for the information generated in the course of a product lifecycle and the Process Innovation making the Concurrent Engineering possible. Building a system in the web environment cannot be the entire effort to realize the Global Work Space within an enterprise that is an essential factor for the reduction of a product development period which in turn contributes to Time to Market. Various work models and processes are found in enterprises and many different application programs are developed and utilized to support these. This study proposes a scheme for the optimized Collaborative Workflow System Architecture that is able to take in and apply various application programs accompanied by the product development work process. Through this, we are to examine various limits and problems existing in the real-time collaborative system between enterprises and to reform these.

The customer unsatisfaction in the new products exists, though the most of enterprises using QFD. It is mainly caused by the failure of corrective determination of technical importance rating(TIR). To derive the technical importance rating, the impact of the fulfillment of design requirements on the satisfaction of customer requirements must first be quantified. This has been accomplished through the use of a 1-3-9 or a 1-5-9 scale and ignored the peak of the house of quality(HOQ). In this paper we suggested the methodology reflecting effectiveness among engineering characteristics and adjusting the relationship strength between customer attribute(CA) and engineering characteristic (EC), by using limit probability and PCMR(pairwise comparison and median rank). With using this method, the determination of TIR would be more suitable for the voice of customers objectively. Here negative correlation is ignored.

This study was conducted a comparative study to identify the differences in service quality between Incheon and Kimpo international Airport and critical factors influencing satisfaction of airport customers. According the results of this study, all service quality factors except the service factor of geographical location of Incheon international airport are better than those of Kimpo international airport. However, all of service quality factors of Incheon airport are evaluated as inferior to those of american, western european and japanese international airports by both the airport visitors and the employees of one korean airliner. In addition the service factors such as response, safety, airport facility and geographical location are found as critical factors influencing satisfaction of the airport visitors and the airliner's employees. Among them the service quality factor of geographical location of Incheon airport is much inferior to that of Kimpo airport comparing with other service quality factors. Thus, the results of this study suggest that the managing team implement TQM and six sigma to enhance the service quality level of the Incheon international airport up to that of the american and western european international airport. Especially, it is strongly required that the Korean governmen deliberate in deciding the geographical location in case of planning new international airport because geographical location is related to not only traffic to airport but also safety of landing, taking off and flying.

에너지 산업 환경의 변화와 정부의 공기업 평가에 대한 대응책으로 시도된 대한석탄공사(KoCoal)의 균형성과관리(Balanced Scorecard, BSC) 프로젝트는 공기업의 가치제고와 조직원들에 대한 성과 평가의 신뢰성을 제고하기 위한 노력의 일환으로 추진되었다. 본 연구에서는 대한석탄 공사가 새로운 비전과 전략으로부터 균형 잡힌 성과 영역을 판별하고 각 성과영역의 주요성공요인(CSFs) 및 주요 성과지표(KPIs)를 개발하여 연계하는 과정을 제시하고, 균형성과관리 시스템을 조직구성원의 성과 평가와 연결하는 방법을 제안한다. 또한 대한석탄공사의 균형성과관리시스템의 기대효과를 제시하고 시행상의 문제점 및 개선방안을 모색한다.

Success in Knowledge Management depends critically on the evaluation system that managers of an organization evaluate objectively performance of members of the organization. In particular, the differences in the standard of Performance evaluation used by managers in Governmental Institution or Agency of make an issue of the standardization of Performance evaluation. Therefore, in this paper we propose the alternative evaluation method, which minimizes the bias resulted from the different standards by measuring ranking of knowledge workers, instead of quantitative analysis, using Median Rank method in Reliability and verify our proposition using the analysis of examples.

Information systems development entails planning, analysis, design and construction phases. The analysis phase identifying user requirements is the most important of these phases. Since unidentified defects in the early phase causes increased work and costs as development proceeds, the quality of analysis results affects the quality of the resultant system. Major tasks in the analysis phase are data modeling and process modeling. Research on building a knowledge-based system for data modeling have been conducted much, however, not sufficiently for process modeling. As a system environment with high user interaction increases, research on process modeling methods and knowledge- based systems considering such environment are required. In this research, a process modeling framework for information systems with high user interaction is suggested and a knowledge-based system for supporting the suggested framework is implemented. A proposed model consists of the following tasks: event analysis, process analysis, and event/process interaction analysis. Event analysis identifies business events and their responses. Process analysis break down the processes of an enterprise into progressively increasing details. Decomposition begins at the function level and ends when the elementary process level is reached. Event/process interaction analysis verifies the results of process analysis and event analysis. A knowledge-based system for supporting a proposed process modeling framework is implemented in a web-based environment.

It is more important than ever for companies to distinguish themselves through knowledge management strategies. Without a constant creation of knowledge, a business is condemned to poor performance. However, it is still unclear how these strategies affect knowledge creation. Knowledge management strategies can be categorized as being either human or system oriented. This paper proposes a model to illustrate the link between the strategies and its creating process. It is found that human strategy is more likely to be effective for socialization while system strategy is more likely to be effective for combination. Furthermore, the result suggests that managers should adjust knowledge management strategies in view of the characteristics of their departments.

We propose a message-based communication protocol for software agents. An emphasis is placed on the problems of sharing and exchanging information through agent communication. We adopt the Resource Description Framework (RDF) schema for information modelling in business domain. The eXtensible Markup Language (XML) serialization is used to generate messages for agent communication. The use of XML and RDF enables software agents to understand the contents of messages correctly and consistently. We believe that the approach can provide a promising way to the automation of business processes through seamless communication among the partners.

In e-Marketplace, many companies are participating frequently either as supplier or as customer. Thus, electronic processing of transactions and flexible integration with participating companies' processes are required. These situation requires process integration using workflow and the exchange of transaction document using XML(eXtensible Markup Language). This paper presents methodologies to model business processes in e-Marketplace where many companies are participating and to exchange electronic messages using ebXML that have become a standard in electronic commerce. These methodologies can integrate and manage processes in electronic commerce environment, and can process ebXML standard documents efficiently, making electronic commerce more harmoniously in global market. The system constructed in this research supports business processes between companies by exchanging XML messages conforming Wf-XML and ebXML standards using SOAP protocol.

서비스 품질의 향상을 기하기 위해서는 제품의 고장에 따른 부품의 적시 공급이 매우 중요하다. 이를 위해서는 항시 서비스 부품의 수요를 어느 정도 정확히 예측해야 한다. 본 논문은 주 제품(prime product)에 부분 의존적인 서비스 부품의 수요 예측 방법을 제시한다. 부분 종속적인 서비스 부품은 특정 부품이 장착되는 주 부품이 여러 개인 경우를 지칭한다. 기존의 방법은 주로 판매되는 부품의 수량에 의거하여 미래의 부품 수요량을 예측하는 단순 시계열이나 수요 확산 및 대체 모형에 근거하고 있는 실정이다. 본 논문은 주 제품의 폐기율과 부품의 고장율의 추정을 통한 부품의 수요 예측 방법을 제시한다. 부품 수요에 대한 다양한 수식 개발을 통해 부품 수요의 구간 추정식이 제시된다. 또한 주 제품에 장착되는 부품의 고장율이 주 제품에 무관하다는 가정하에 부품의 총 수요를 추정하는 절차를 제시하고 시뮬레이션을 통해 이러한 가정의 타당성을 고찰한다.

This paper presents a sophisticated mixed-integer linear programming model that may help regional decision-maker to develop long term plan of solid waste management The model revises Ni-Bin Chang(1996)'s integrated waste management models to fit Korean solid waste management system We apply this model to evaluate impact of facility sharing and coordinated operation among three self-governing districts in Seoul city Our study results indicate that facility sharing and coordinated operation among districts eliminate unnecessary landfilling and facility expansion.

The wide use of Information Technology(IT), especially the rapid diffusion of the internet, brings us a new paradigm, called "Electronic Commerce", or "Digital Economy." The paradigm is regarded as a business strategy essential to organization's competitive advantage. Because very few studies have been performed in the area of e-strategy, especially in the combined strategy of clicks and mortars, a research on this area is needed. The main questions of this study are empirically to validate the usefulness and the applicability of a decision roadmap and to analyze the situation of Korean firms based on the decision roadmap. Major results of this study are as follows; First, there is an evidence that the roadmap can be applied to firms regardless of its industry and size. Second, usefulness of the roadmap is proved since companies that followed the prescription of the decision roadmap showed high degree of satisfaction with online sales amount. Third, Korean firms in general do not achieve the ideal degree of integration (or separation), especially in terms of management and operation. In conclusion, this study provides e-business strategy planners some guidelines about how to achieve right mix of on-line and off-line business.

There have been several attempts to describe the recent phonemona of e-tailing and the competition of e-tailers with traditional retailers. However, it appears that the previous models exhibit some shortcomings. With an extension of the well-known circular city model, this paper attempts to relax those limiting assumptions and addresses various issues around electronic commerce: whether e-tailing will eventually drive out traditional retailing, whether e-tailing will necessarily increase competition and lead to lower prices, and whether all the consumers will be better off with more alternatives to choose from.

One of the most important challenges facing companies in the age of internet business is the proper alignment customers needs with internet business system that allaws them to react rapidly and continuously. This paper proposes a methodo1ogy to align analyzing customer's requirements with implementing Internet business system The methodology consists of five Phases. It covers from customer analysis to Internet business system implementation, and each of the five phases has its own activities and outputs. A real- world case is proposed to illustrate the application of the methodology.

The exponential growth of the Internet usage has motivated the launching of many commercial business web sites. Internet as a purchasing medium shows several unique characteristics because of its customer- driven technologies and absence of physical products. Thus, new commercial medium provokes a reclassification of products. Twenty five types of commercial Products are empirically tested in the Internet retailing and found to be grouped into four categories. This classification framework is investigated in the view of involvement and web technology Furthermore, this paper proposes four business web implementation strategies - impressive, simple, sensory, and semantic - based on the product classification. Proposed guidelines on business web might increase customer satisfaction.

제조 기업의 가치사슬 최적화를 위한 전략적, 운영상 의사결정 문제는 수리적 모델을 이용한 DSS의 효과적인 활용을 통하여 해결 될 수 있다. 의사결정 프로세스는 필연적으로 공급사슬의 여러 성과 목표와 관련 조직간의 Trade-off 및 연계관계(Interaction)가 고려되므로 복수의 DSS 활용이 필요하게 된다. 이와 관련하여 본 논문에서는 공급 사슬 전체의 최적화를 위한 다수의 전략적 목표 및 의사결정 프로세스, 연계된 수리적 모델들을 정의하고, 관련 조직 및 성과 지표 별 부분적 최적화(Local Optimality)를 지양하고 전체최적화 (Global Optimality)를 달성하기 위한 DSS Logic을 철강산업 프로세스를 대상으로 수리적 모델들의 분할(Decomposition) 및 통합개념을 통하여 제시하였다.

This paper is to illustrate the possibility to use organizational knowledge and data warehouse simultaenously for a decision maker. Organizational knowledge is produced for qualitative decision-making process and data warehouse is used for quantitative decision-making process. However, two things are currently implemented separately in many organizations although being needed for decision makers. This research shows a model for building integrated system and a prototyping system based on the model. And its effectiveness is discussed.

The Analytic Hierarchy Process (AHP) is well suited to group decision making and offers numerous benefits as a synthesizing mechanism in group decisions. To date, the majority of AHP applications have been in group settings. In general, aggregation methods employed in AHP can be largely classified into two methods: geometric mean method and (weighted) arithmetic mean method. In a situation where there do not exist clear guidelines for selection between them, two methods do not always guarantee the same group decision result. Thus we suggest a simulation approach for building group consensus as a complementary tool, even when just group judgments are required. Without any efforts to make point estimates from individual diverse preference judgments, a simulation approach suggests the process how the individual preference judgments are aggregated into consensus, displaying possible disagreements as is natural in group members' different viewpoints.

A good business performance measurement system is an effective tool io sustained growth in profits. Although interest in creating performance measurement models is widespread, a well-designed system is rare. To be successful in today's competitive environment, a performance measurement system should incorporate strategic success factors and contain financial and non-financial measuring index to carry out strategic management. In the 1990s, Kaplan & Norton introduced a concept called the Balanced Scorecard. The Balanced Scorecard supplements traditional financial measures with criteria that measured performance from three additional perspectives - those perspectives of customers, internal business processes, and learning and growth. This paper presents five measuring index criteria for each perspective. To calculate the relative priority for These measuring index, we investigate weights investigated by interviews with management consultant. Then, AHP method is employed for calculating priority weight. Our evaluation model may be referred to as the Balanced Analytic Hierarchical Performance Model(BAHPM) in the sense that the analytic hierarchical scheme, along with the AHP, is applied. The BAHPM is the first kind of analytical model to cover a wide variety of measures. In comparison with previous evaluation models, our model shows strengths in structural flexibility, ease of incorporating feedback, group evaluation capacity, participation promotion, sensitivity analysis, and computational simplicity. A prototype based on the BAHPM can be applied to various industry sectors.

The CDMA system with time division duplex mode (CDMA/TDD system) is a highly attractive solution to support the next generation cellular mobile systems providing multimedia services where the traffic unbalance between downlink and uplink exists. In this paper, the capacity of the CDMA/TDD system is analyzed in general multicell environments. For this analysis, the interference for a time slot is analyzed, and a time slot and channel allocation problem is mathematically formulated and solved using simulated annealing technique. Computational experiments provide a promising result.

We consider the routing and wavelength assignment problem in survivable WDM transport network without wavelength conversion. We assume the single-link failure and a path protection scheme in optical layer. When a physical network and a set of working paths are given, the problem is to select a link-disjoint protection path for each working path and assign a wavelength for each working and protection path. We give an integer programming formulation of the problem and propose an algorithm to solve it based on column generation technique and variable fixing. We devise a branch-and-price algorithm to solve the column generation problem. We test the proposed algorithm on some randomly generated data and test results show that the algorithm gives very good solutions.

With the advent of the Internet, data centric computing applications, and e-business applications, virtually all network-stored data has become mission critical in nature. This increasing reliance on the access to enterprise data is challenging the limitations of traditional server-storage solutions. As a result, the ongoing need to add more storage, serve more users and back up more data has given rise to the concept of a SAN(Storage Area Network), “a network whose primary purpose is the transfer of data between computer systems and storage elements and among storage elements.” The purpose of this article is to help the managers and researchers make the understanding of a SAN as the possibility of new data repository in e-business era. This paper provides a thorough literature review on this new concept including its structure, its benefits and disadvantages, and its underlying issues.

마이크로셀 시스템에서 트래픽(통화량) 성능은 가입자(사용자)들의 이동성에 민감한 영향을 받는다. 셀 내 체류시간 및 채널점유시간은 이동 속도 및 방향의 추계적인 변화에 의하여 특성지어진다. 셀 내 체류시간은 채널점유시간과 같은 통화량 성능을 분석하는데 기초적으로 이용되는 중요한 정보를 제공한다. 차세대 이동통신 네크워크로 진화해 가는 과정에서 증가하는 사용자들의 접속요청을 수용하고 주파수 효용도를 높이기 위하여 셀의 크기는 매우 작아진다. 셀의 크기가 작아질수록 통화량 성능은 사용자들, 특히 보행자들의 가변적인 이동성에 더욱더 영향을 받게된다. 단순화된 모형을 이용한 기존연구는 제2세대 이동통신에서는 수용할만한 정확성을 보였으나, 통화량 분포의 변화가 시간적으로 크고, 보행자의 이동성에 영향을 많이 받는 picocell (피코셀)의 특성을 적절히 반영하지 못하여 성능분석의 정확성을 기대하기 어렵다. 보행자의 가변적인 이동성을 수리적으로 분석하기 '위하여 랜덤 웍 (random-walk)모형을 적용하여 기존의 연구보다 개선시킨 확률모형을 제안한다. 제안된 모형으로 추계적 상관관계가 있는 보행자 이동성의 가변적 특성을 분석할 수 있다. 주요 통화량 성능지표를 제안된 모형으로 분석하였다.

This study suggests an approach for determining fleet size for container road transportation with dynamic demand in Korea. With the forecasted monthly container transportation data a year, a heuristic algorithm is developed to determine the number of company-owned trucks, mandated trucks, and rented trucks in order to minimize the expected annual operating cost, which is based on the solution technologies used in the aggregate production planning and the pickup-and-delivery problem. Finally the algorithm is tested for the problem how the trucking company determines the fleet size for transporting containers.

본 연구는 생산-운송시스템에서 수요자와 생산시설 및 운송네트워크이 주어질 경우 최소의 비용으로 고객을 지원할 수 있는 시스템의 결정을 위한 GIS(Geographic Information System) 기반의 차량 운송시스템의 연구이다. 주요 결정 변수는 생산공장의 위치, 운송네트워크, 운영할 창고 및 재고유지수준 등이 포함된다. 본 연구에서는 다-품목 생산 및 공급문제를 비 선형문제로 정식화하고 이를 선형문제로 변환하여 정수계획문제(IP)로 해를 구하였다. 이를 위한 전산 프로그램을 개발하고 예제들을 응용하고 그 결과를 보였다.

Customer centered supply chain Management is becoming a very important issue for manufacturing and distribution company. Increasingly, leading companies improve their competitiveness by shorting the time to delivery from warehousing to delivering, increasing the level of customer service. They also do their best to collaborate with suppliers and customers based on the information sharing. This case introduces a integrated approach to develop a logistics automation and information system for the spare parts distribution center of L electronics. We pursue to optimize the supply chain by implementing intelligent logistics system which has the capabilities of responding to the changes in market demands. This would provide many implications to the clients in solving logistics problems and secure superior competitiveness.

The selection of the optimal partners in supply chain management is one of the most critical success factors. In the past, partners for outsourcing production were selected repeatedly within a closed group of candidates due to the limited information and location of partners. But, the wide use of internet and the development of electronic commerce make it possible that the partners capable of providing the optimal services are selected regardless of their location or nationality. And the concept of partners was limited to the provider of production resources. In the supply chain management, the concept should be extended to the provider of transportation and warehouse due to the high portion of transportation cost among the total production cost Therefore, In this study, we propose an analytical approach to the selection of Production and transportation partners in supply chain management. For this purpose a mathematical model is developed, and then a heuristic algorithm based on tabu search is presented since the model belongs to the NP hard problem.

Firms pursue new business opportunities for growth. Market development strategy is one of the growth strategies, which develops new market segments with current products. However, new market generally has high uncertainty, or high risk. Firms should consider the risk in making and implementing the market development strategy. In this paper, an optimal marketing resource allocation model is developed, taking into account the risk attitude of a firm in market development. Under the assumption of exponential utility function, the global optimal solution is derived, and the implications are provided.

본 연구에서는 할부금융시장에서의 고객신용예측을 위한 모형으로 여러 가지 인공신경망(Neural Network) 모형들을 유전자 알고리즘(Genetic Algorithm)을 이용하여 통합한 신용예측모형을 제안한다. 10개의 학습된 인공신경망 모형들을 유전자알고리즘을 이용하여 종류별로 통합하여 MLP(Multi-Layered Perceptrons), Linear, RBF(Radial Basis Function) 세 가지의 대표모델을 얻고 이를 다시 하나의 인공신경망 모델로 통합하였다. 이를 통합되기 이전의 각각의 인공신경망 모형들과 성능을 비교, 분석하여 본 연구에서 제안한 통합모형의 유효성과 통합방법의 타당성을 제시하였다.

정보기술의 발전은 기업의 마케팅 방식과 고객 정보를 관리하는 방법을 변환시키고 있다. 급속도로 확산되는 인터넷 환경은 데이터의 수집 과정을 쉽게 만들었으며, 대량의 데이터를 기업에 제공할 수 있게 하였다. 새로운 정보기술 도구로 인해 가능해진 대량의 고객 정보는 기업에게 경쟁 우위를 얻기 위한 도전과 기회를 제공하고 있다. 많은 조직에서는 의사 결정 지원을 위하여 이들 거대한 데이터베이스에 내재된 지식의 중요성을 인식하고 있다. 특히, 이들 데이터베이스로부터 추출된 고객에 대한 지식은 마케팅에 매우 중요하게 사용될 수 있다. 본 연구에서는 데이터웨어하우징을 이용한 CRM 아키텍처를 제안한다. 고객 중심의 전사적인 CRM 아키텍처를 제시하고 CRM 시스템 구성에 필요한 주요 기능을 제안한다. 제안된 아키텍처 내에서 고객 데이터는 다양한 애플리케이션 데이터 소스로부터 데이터전송 시스템을 이용하여 데이터웨어하우스로 통합된 뒤, 다시 마케팅 데이터 마트로 구성되어 CRM 활동에 사용될 수 있다. CRM은 고객 인식(Customer Identification), 고객 분석(Customer Analysis), 상품분석(Product Analysis), 고객 서비스(Customer Service)의 주요 기능을 갖는다.

This study investigates the differences in critical dimensions which impact on operations and strategy in Internet EC of service related intangible product. For this purpose, services are newly classified by two selected dimensions such as 1)the proportion of substitute by on-line, and 2)the needs of interaction and customization. Secondly, on the classification of services, the differences of 1) customer needs of geographical accessibility, 2) needs of cooperation with off-line functions, and 3) customer purchase intention in Internet EC are tested among classified groups. Finally, implementations on operations and strategy in Internet EC are suggested, based on the results of analysis. Data are collected by the survey on the customer groups, and analyzed by statistical method, such as mean score plot, cluster analysis, and analysis of variance.

본 연구의 주요 목적은 인터넷 뱅킹의 사용 패턴 (사용의 다양성과 강도)에 영향을 미치는 요인들을 탐색하고 검증하는데 있다. 자기효능 이론, 혁신수용이론, 그리고 기술수용모형을 기초로 인터넷 뱅킹 사용자의 사용 패턴에 영향을 줄 수 있는 5개의 요인 (혁신성, PC에 대한 자신감, 인터넷 경험, 인지된 용이성, 인지된 보안성)을 찾아내서, 그 요인들이 인터넷 뱅킹의 사용에 어떤 영향을 미치는지를 탐색하였다. 본 연구를 통하여 실증적으로 각 요인의 영향을 검증한 결과, 사용자의 인터넷 경험과 인터넷 뱅킹 시스템에 대한 사용자의 인지된 보안성은 사용의 다양성과 강도에 유의적인 영향을 미쳤고, 개인의 혁신성은 사용의 다양성에만 유의적인 영향을 미치는 것으로 조사되었다.

Direct marketing in the form of Internet Commerce and TV Home Shopping became the focus of concern for Korean companies. Despite the importance of research in these interactive systems, few studies have been performed on the consumer behavior in TV Home Shopping. This study explores what factors consumers perceive critical in these interactive systems, and analyzes the difference in consumer perception with respect to these critical factors.

The purpose of this study is to find the perceived risk which influences consumers' purchase attitudes so that consumers' participation in electronic commerce could be enhanced. Consumer behavior involves risk in the sense that any action of a consumer will produce consequences which one cannot anticipate, and some of which are at least likely to be unpleasant. The types of perceived risks are financial risk, performance risk, social risk, psychological risk, time loss, opportunity loss, privacy risk, fashion loss, delivery risk, seller's response risk and seller's fraud risk The findings are as follows: $\circled1$ The financial risk, performance risk, time loss, delivery risk, seller's response risk and seller's fraud risk have negative effects on the consumers' purchase attitudes. $\circled2$ There is no difference in the level of perceived risk according to the demographic factors such as age, education and income level.

We consider a postal transportation planning in the transportation network of the form of hub and spoke. Given mail sorting centers and an exchange center, available vehicles and amount of mails to be transported between mail sorting centers, postal transportation planning is to make a transportation plan without violating various restrictions. The objective is to minimize the total transportation cost. To solve the problem, a tabu search algorithm is Proposed. The algorithm is composed of a route construction procedure and a route improvement procedure to improve a solution obtained by the route construction procedure using a tabu search. Computational results show that the proposed algorithm can solve practically sized problems within a reasonable time and the quality of the solution is acceptable.

인터넷의 사용자가 급증하면서 고가용성(High Availability)과 확장성(Scalability)를 지닌 고성능 인터넷 서버들이 요구되고 있다. 클러스터 시스템은 이러한 요구사항을 만족시킬 수 있는 시스템으로 실제 작업을 처리하는 서버(Server)와 시스템 외부에서 유입되는 사용자 요구를 시스템에 속한 서버 노드에 분배하는 디렉터 (Director)로 이루어져 있다. 디렉터는 사용자가 요구한 작업을 서버노드에 분배하는 로드밸런서(Load-Balancer)의 역할을 하게 되는데, 작업을 분배하는 방법으로는 Round-Robin, Least-Connection 등의 방법이 주로 사용되고 있다. 본 논문에서는 각 작업분배 방법 중 효과적인 방법을 비교 선택하기 위해 대기이론을 적용하여 시뮬레이션을 통해 검증하였다.

This article deals with stochastic reliability systems that include a repair facility and unreliable machines: the main facility of working and an auxiliary facility of "super-reserve" machines. The number of super-reserve machines are random number with a arbitrarily distribution and working machines break down exponentially. Defective machines line up for repair, whose durations are arbitrarily distributed. Refurbished machines return to the main facility. If the main facility is restored to its original quantity, the repair facility leaves on routine maintenance until all of super-reserve machines are exhausted. Then, the busy period is regenerated. The whole system also falls into the category of closed queues, with more options than those of basic models. The techniques include two-variate Markov and semi-regenerative processes, and a duality principle, to find the probability distribution of the number of intact machines. Explicit formulas obtained demonstrate a relatively effortless use of functionals of the main stochastic characteristics (such as expenses due to repair, maintenance, waiting, and rewards for higher reliability) and optimization of their objective function. Applications include computer networking, human resources, and manufacturing processes.

Finding the optimal solution in the river water quality management system is very hard with the non-linearity of the water quality model. Many suggested methods for that using the linear programming, non-linear programming and dynamic programming, are failed to give an optimal solution of sufficient accuracy and satisfaction. We studied a method to find a solution optimizing the river water quality management in the aspect of the efficiency and the cost of the waste water treatment facilities satisfying the water Quality goals. In the suggested method, we use the QUAL2E water quality model and the genetic algorithm. A brief result of the project to optimize the water quality management in the Youngsan river is presented.

To have competitive advantage over competing telecommunications services, it is crucial to provide higher value with lower cost. In this study, CUP (Cost-Utility-Preference) chart is developed to analyze the market competition dynamically. It considers both the competition and customers' preference of each service to explain the change of the competitive landscape over time. Conjoint analysis is used for detailed analysis. Using the chart, we can analyze the currently competing services, predict the future scenarios of the competition, develop new services, and understand the causes of successes or failures of telecommunications services.

This paper deals with the estimation of efficiency of Telecommunication Operators(TOs) using DEA (Data Envelopment Analysis). The measure of efficiency using DEA accomplishes next two steps. First, the efficient frontier is derived using the data of input and output. And then the efficiency of the decision making units are measured by the distances from this frontier To measure efficiency, we consider a one-output, three-input production function. We use the tangible assets, investment cost, the number of employees for input data and measure the output by the revenue. After measuring the efficiency, We can compare the domestic TOs with the international TOs and the wire TOs with wireless ones by average efficiency. After accomplishing the analysis of efficiency, the internal/external efficiency is measured simultaneously through correlation between efficiency and profitability, quality level.

최근 전통적인 경제의 디지털경제로의 이행을 주도하고 있는 주요 요인들은 정보통신분야의 급격한 기술발전, 이와 관련된 새로운 비즈니스 창출 등 관련 시장의 성장 및 새로운 기술·시장에 대한 새로운 정책 전개 등 정보통신 관련 기술·시장 및 정책 환경에서 구분하여 파악될 수 있다. 본 연구에서는 정보통신산업을 중심으로 산업의 분류체계를 가치체계와 연관하여 기반계층·전달망계층·접속서비스계층·사용자계층·응용계층 등의 5단계로 제시한 후, 각 계층별 기술·시장· 정책 환경의 변화를 정리하였다. 또한, 계층별로 나타나는 각 환경 요인들의 변화가 다른 계층 및 타 환경요인에 미치는 영향을 분석하고, 이를 바탕으로 산업의 종합적인 구조변화를 전망하였다. 이에따라 정보통신산업은 향후 기반계층에 가까울수록 기술적 독과점이 강화되고, 응용계층에 가까울수록 핵심역량에 기반한 전략적제휴가 두드러질 것으로 볼 수 있다.

Policy introducing open access to the wireless network has been under discussion in the Korean mobile telecommunications industry. The policy, which directs mobile operators to allow mobile portals other than their own ones to access their network and subscribers, is expected to vitalize mobile Internet market through competition among portals. This study analyzes the impact of the policy in terms of welfare of mobile Internet users and profit of mobile contents providers. We also cover the influence of mobile Internet fee on anticipated results of the policy

Owing to handset subsidies, large growth in the Korean mobile telephony subscribers has occurred. While most of firms create artificial switching costs by rewarding customers for repeated purchases to retain their customers, mobile telephone carriers discriminate against loyal customers through handset subsidies. This article examines the effect of switching cost on the prices and profits in a two-period, differentiated product duopoly model.

This study explores on the static and dynamic growth patterns of high-tech ventures in Korea. We developed an integrative framework with target market (local vs. global), product/market maturity (existing vs. emerging), and technological capability (follower vs. pioneer). We also identified seven new ventures strategies as follows: i) reactive imitation, ii) proactive localization, iii) import substitution, iv) creative imitation, v) early market-entry, vi) global niche, and vii) global innovation. With five successful Korean new ventures, we found different competitive behaviors and performance among new venture strategic types. This study also observed two different growth patterns: growth through strategic replication and growth through strategic change. It depends on whether they are pursuing similar strategy over time or different strategy within for growth. In addition, we found that creative imitation plays a stepping-stone role in two-step internationalization processes. Although this study is exploratory and needs more empirical studies, it can provide new ventures with meaningful guidelines for growth and internationalization with a dynamic perspective.

우리 나라와 세계 경제에서 모험기업이 차지하는 비중이 날로 높아져 가고 있다. 모험기업의 전략과 성과에 관한 연구는 1980년대 이후로 경영학 분야인 마케팅, 조직 등에서 꾸준히 진행되어 왔다. 그러나 기술전략 분야에서는 상대적으로 소홀히 되어 온 점이 다분하다. 이러한 연구의 필요성에 부응하여 마케팅 전략과 더불어 어떠한 기술전략이 모험기업의 성과에 어떠한 영향을 미치는지를 연구함으로써 향후 이 분야의 연구에 대한 방법론적 틀을 제공하고자 하는 것이다. 연구 내의 독립 변수는 크게 기술전략, 마케팅전략, 산업 환경의 세 부분으로 분류하였다. 조절변수로는 벤처연구소에서 실시한 벤처기업의 유형 분류(하이테크형, 우량기업형, 부띠크형, 일반기업형)를 사용하였고, 모험기업의 성과를 종속변수로 사용하였다. 이러한 변수들이 모험기업의 성과에 미치는 상대적 영향력을 연구자료를 확보하기 위하여 서베이가 행하여졌는데, 대상은 중소모험기업의 자본시장인 코스닥에 등록된 모험기업업체로 선정하였다. 연구 결과, 위에서 열거한 변수들의 대부분이, 각 전략의 종류에 따라 차이가 있지만, 모험기업의 성과에 유의적인 영향력을 행사하고 있다는 사실이 밝혀졌다. 또한, 분류된 모험기업의 종류에 따라 추구하는 전략이 달라진다는 사실도 밝혀졌다

This study is aimed to design a priority setting algorithm necessary for evaluating and selecting interdependent R&D planning system alternatives. In case that the relationship of technology alternatives is interdependent, a relative importance as occurrence or nonoccurrence of the technology alternatives viewed from the future time varies. So, we are subject to design the evaluation process considering a cross- impact of future technology alternatives. Thus, we apply the cross impact analysis (CIA) model to consider the cross-impact among interdependent system alternatives. Also, the analytic hierarchy process(AHP) model is applied to determine the priority of alternatives by taking the pair-wise comparison among factors.

In this study we propose a technology selection model, which captures technology seeds for new business area by a fuzzy structural modeling method and then, design a model, which evaluates the validity of New Business Development plans for the selected technology seeds with regard to the properties of manufacturing, product, market, and economy as well. Finally, a fuzzy inference system is designed in order to decide the degree of success of New Business Development plans based on the preceding validity evaluation.

Today's rapid development in the computer and network technology makes the environment which enables the companies to consider their decisions on the wide point of view and enables the software vendors to make the software packages to help these decisions. To make these software packages, many algorithms should be developed. The production and distribution planning problem belongs to those problems that industry manufacturers daily face in organizing their overall production plan. However, this combinatorial optimization problem can not be solved optimally in a reasonable time when large instances are considered. This legitimates the search for heuristic techniques. As one of these heuristic techniques, genetic algorithm has been considered in many researches. A standard genetic algorithm is a problem solving method that apply the rules of reproduction, gene crossover, and mutation to these pseudo-organisms so those organisms can Pass beneficial and survival-enhancing traits to new generation. This standard genetic algorithm should not be applied to this problem directly because when we represent the chromosome of this problem, there may exist high epitasis between genes. So in this paper, we proposed the hybrid genetic algorithm which turns out to better result than standard genetic algorithms

The primary objective of Supply Chain Management (SCM) is to optimize the cash, material and information flow considering all components of Supply Chain (SC) . The plan, established for achieving such objective, is called Supply Chain Planning (SCP) . This SCP gives each SC component specific volume or operation task, should be done in specific due date, for optimizing SC. In detail, the degree of accomplishment for SCP, depends on the SCP achievement of each SC components, is very close to successful SCM. However, this achievement is affected by uncertainties about time and volume. In general, reliability concepts means the probability that a product or system will perform its specified function under prescribed conditions without failure for a specified period of time. Therefore, the concept of Supply Chain Reliability (SCR) and an analytic methodology to calculate the degree of achievement SCP using reliability concept are proposed in this paper. SCR means that the degree of achievement for SCP considering all SC components in due date. SCR can be used to measure the performance of whole supply chain and indicate the direction of SCP.

제조업의 e-Transformation을 통한 경쟁력 향상 방안은 닷컴 기업의 수익성 향상 등과 함께 e-비즈니스 모델 설계의 주요 이슈이다. 본 논문에서는 제조기업의 e-Business화라는 포괄적인 주제에 대하여 철강산업을 대상으로 변화에 대한 주요 요소와 관련된 실증적 사례를 제시하는데 초점을 두었다. 주요 변화관리(Change Management) 요소로는 기업의 내,외부 공급사슬 최적화, 고객관계관리, 구매 및 판매 관련 전자상거래와 정보시스템 활용 등을 정의하고, 이와 관련된 AS-IS 대비 TO-BE의 성과 향상을 위한 개선가능요인(Improvement Potential)과 달성방안을 전개하였다. 본 논문의 특징은 재고 등 내부 효율성 관련 성과 및 고객과 관련된 서비스 수준 향상을 위한 공급사슬 상에서의 Electronic 가치사슬의 재구성과 Logic 개선요소를 철강산업의 실증적 사례를 통하여 제시한데 있다.

As growing the electronic commerce there are significant changes in the products/services catalog into the on-line environment. Advertent of e-catalog business opportunity for their own product/services enlarges the market volume and there are diverse methods for the presentation of its product/services. A method for the presentation of product/services features one uses identification and classification system. This study constructs a classification system and database layout for the product/services classification system as a part of e-catalog system. We consider the specific method for the GDAS-based dataset and UNSPSC classification system in the distribution industry.

In this paper, we presents a systematic methodology for minimizing tardiness and maximizing resource utilization in a multi-plant supply chain. A methodology is represented to a multi-objective mathematical program model. The model offers flexible and efficient multi-plant planning and scheduling. Also, We develope a realistic and flexible planning model using the genetic algorithm to solve the model.

TOC(Theory of Constraints) - the emphasis of this philosophy was on identifying and eliminating constraints(bottle-necks) in the system. TOC solves this and optimizes whole system by improving manufacturing constraints that limit system result. In this paper, it is shown that the concept of the "delayed differentiation" can be applied for enhancing the efficiency of the time buffer and thus reducing the of the time buffer.

This paper is concerned with Vehicle Routing Problem to minimize the total delivery waiting time of customers. The delivery waiting time is the time taken to travel from the depot to the customer, which is important for the delivery of the perishing products or foods requiring freshness. We construct a mixed integer linear programming formulation of this problem, and CR(Clustering first Routing second) heuristic and SPH(set partitioning heuristic) are suggested. the results of computational experiments showed that these heuristics find successfully favorable solutions, in much shorter time than optimal.

The most work-space invest much time and labor for optimal arrangement. The work-plates of the work-space should be arranged, processed and assembled under the restricted work space. The optimal arrangement under the terms of a restriction arrange the maximum work-plates in appointed work-space. It's the central aim. The work-plates arrangement scheduling of the most work-space are achieved through the experience of the planner. Like this, if the work-plates arrangement is worked by hand, there spend much time for the training planner. And the burden of the personnel expenses occur for using the master worker, also there are dangerous factors to be able to bring the bottleneck circumstance for the process planning, because the quick work planning does not accomplish. With such problems, the biggest problem is inferior the value of the plan. For solved the such problem of hand-operating, some work-spaces developed and used the work-plate arrangement scheduling system for the special quality of themselves. This paper make research into a plan to develop the work-plate arrangement scheduling system efficiently.

This paper deals with the procedures of effective mid-term Operation Planning establishment for painting shop in shipbuilding. and develop prototype system. In general, the block painting process consists of two stages such as blasting operation for surface preparation and painting operation for paint application for blocks. Weather condition is a potent Influence on those operations. The procedures consists of four steps, Load analysis, Generate alternative simulation plan. Implementation of Allocation automation module and Compare result of each simulation plan. Explain of each step. as follows, 1.step, Load analysis measure amount of assigned workload and manhour. 2.step, simulation scheme include alterable control variable such as overtime, weather. Auto allocating module carry out feasibility of simulation plan. 3.step, Allocation automation module are composed of three algorithms, as followings: - the block allocation algorithm that determines the number of blocks to be processed each day, - the team allocation algorithm that allocates blocks to worker groups. - the block arrangement algorithm that arrange blocks in blasting and painting cells. Since the block arrangement algorithm is conducted simultaneously with the team allocation algorithm, the total structure of the operating algorithms is considered to have two phases: first, daily load balancing with capacity limit and second, team allocation considering arrangement each day 4 step, Comparing result of each simulation plan. and select best simulation plan.

The mid-schedule planning of the ship is making a schedule about the process from cutting to erection. The ship consists of lots of blocks. This block has different process because of the shape of the block varies in accordance with the ship-type and the part position of the ship. The type and order of each block process initially must be generated for the mid-schedule planning. In this paper, the process planning, described as above is preparing the basic information before scheduler make a plan with the prepared manhour. The scheduling is done with this process planning which includes the information of the process order. This paper shows the research about three methods to design the process planning. First, investigate the expression method about information of the process planning for the mid-schedule planning in real workplace. Second, design the object of the process planning on the basis of investigating the expression method. Finally, develop the prototype of object on the basis of this designed process planning and then find the practical use in the mid-schedule planning. The object, which is developed in this paper, contains the main algorithm. In case of developing The Mid-Schedule Planning System, this object is expected to be utilized very easily as consisting another object.

SNS는 MRP의 부품전개 방식을 SN(Sequential Number : 누계)으로 적용하여 개량한 시스템으로, 계획과 실적을 이원화한 진도관리 중심으로 개발되었으며, 정보처리 로직이 간단하여 대기업뿐만 아니라 중소기업에 활용하기에 적합하다. 그러나, 소프트웨어 구현에 있어서 불량품 정보를 반영할 수 있는 로직이 불분명하여 정보의 정확성이 결여되고, 결국에는 소프트웨어에서 제공하는 정보를 활용하지 못하는 단점이 있다. 따라서, 본 논문은 SNS의 생산 및 재고관리의 실적입력 시 불량품 정보를 처리하는 알고리즘을 개발하여 현실적으로 재고와 진도를 파악할 수 있는 누계시스템의 불량품 정보의 처리방법을 제공한다.

In semiconductor manufacturing, wafer fabrication is the most complicated and important process, which is composed of several hundreds of process steps and several hundreds of machines involved. The productivity of the manufacturing mainly depends on how well they control balance of WIP flow to achieve maximal throughput under short manufacturing cycle time. In this paper mathematical formulation is suggested for the stepper scheduling, in which cycle time reduction and maximal production is achieved.

전자상거래에서의 성공은 고객과의 관계형성을 통한 지속적인 상거래의 발생을 통해서 가능하다. 기반 기술의 발달로 인해 웹상에서 조직의 프로세스를 구현함으로써 고객의 경험을 소프트웨어화시킬 수 있게 되었다. 그러나 고객과의 신뢰 있는 관계구축을 위해서는 시스템의 구현뿐만 아니라 비즈니스 규칙들이 처리하지 못하는 부분, 즉 고객이 느끼는 예외적인 상황을 얼마나 탁월하게 처리하느냐가 중요한 변수라고 볼 수 있다. CRM을 위한 많은 도구들이 개발되고 실제로 사용되고 있지만 많은 기업들이 예외처리 프로세스에 대해서는 그 중요성을 간과하고 있다. 본 논문은 소프트웨어에서 다루는 예외처리가 아닌 기업 프로세스의 예외상황에 대한 프로세스에 대해 탐색적인 통찰을 제공한다.

B2B(business to business) using the WWW have been quickly increased by the advance of the internet. Up to the Present, HTML have been used as the technology for representation of the WWW documents. HTML have a good transplantation and convenience. But HTML have a lot of constraints in the processing of the trade information between enterprises, because HTML use the fixed tag. In recently, a great number of technology appear to improve this problem. XML is one of them. XML published by W3C in 1998 is a standard for representation and interchange of WWW documents. So XML can be applied to interchange of information between enterprises in internet-based B2B. In this paper, we proposed the method for the order processing using the XML, applied the proposed method to 'H' company which product a part of marine engine, and then we implemented the prototype system. we described the effect of application.

A collaboration supporting system, which enables multi-user collaboration and communication in Internet environment, is being a new indispensable tool to compete and collaborate with business peers. A collaboration supporting system in distributed environment requires scalable and open system architecture to rapidly deploy a new technology and trends. In this paper, we propose such a collaboration supporting system where communication API is using XMI(Extended Markup Language)-based SOAP(Simple Object Access Protocol)protocols, which is independent on programming language and platform. In our system, sever components are developed with EJB(Enterprise Java Beans). System analysis, design, and development are based on UML(Unified Modeling Language).

This paper is focused on the development of the DFX system which can support the task that designer or project teams analyse and evaluate the feasibility of the product concept quickly, and then improve the problem of the product and process design before the manufacture in the M-T-O (make-to-order) environments. In this paper, we importantly treated three points for the effective development of the DFX system. The first, we proposed the procedure and architecture of the DFX system which fit with the M-T-O environments. The second, we designed and implemented the DFX prototype system on the WWW, in order to allow the multi-accessing and multi-processing regardless of time and position. The last, we described the benefits of the Web-based DFX system.

정보기술의 발전은 기업이 혁신적으로 비용을 감축하거나, 고객에게 전혀 다른 차원의 서비스를 제공할 수 있는 등의 과거에 갖지 못했던 새로운 능력을 제공하고 있다. 이러한 기업에게 요구되는 정보 시스템 (Information System : IS)의 새로운 능력들이 성공적으로 확보하기 위해서는 기업 IS 자체의 혁신이 선행적으로 요구된다. 최근에 이러한 IS 혁신 및 IS를 통한 경쟁적 우위의 확보를 위해서 IS 인적자원 혁신의 중요성이 강조되고 있다. 그러나 IS 인적자원 혁신에 대한 연구는 초기 단계에 있어 IS 인적자원 혁신을 위한 영향요인에 대한 연구는 전무한 실정이다. 따라서 본 연구는 조직혁신, IS 혁신, 인적자원 혁신에 대한 문헌 연구를 통하여 IS 인적자원 혁신의 영향 요인을 환경적 요인, 전략적 요인, 조직적 요인, 개인적 요인으로 분류하여 IS 인적자원 혁신의 영향 요인을 도출하고, 이들 영향 요인들이 IS 인적자원 혁신과정에 어떠한 메커니즘을 통해 영향을 미치는지 나타낸다.

his paper describes the framework of integrating the business processes of different organizations through the interoperability of workflow management systems. In particular, this framework can be applied to developing B2B systems, in which each trade partner has its own heterogeneous workflow system on the Internet. We propose an approach to implementing an interoperable workflow system which can be integrated with other heterogeneous workflow systems through the four scenarios suggested by WfMC(Workflow Management Coalition), and we developed XML message-based prototype systems, which using SOAP(Simple Object Access Protocol), is applicable to standard e-business framework such as ebXML.

기존의 통신사업자는 전통적 음성서비스를 고도화하기 위한 백방의 노력을 기울이고 있다. 여러 가지 부가서비스의 개발 등을 통해 차별화 전략을 구사하고 있는데, 이중에서도 결합서비스의 제공은 가격측면이나 마케팅적 측면에서 가장 손쉬운 서비스 고도화전략이라고 볼 수 있다. 그러나 현재 우리나라의 경우, 시장지배적 기간통신사업자의 결합 서비스 제공은 원천적으로 금지되어 있다. 이에 본 논문에서는 결합서비스의 전반적 상황을 총괄해보고, 결합서비스의 제공에 관한 개념적 확립 및 세계 각국의 현황과 국내 제도적 현황을 분석해봄으로써 향후 나아가야 할 올바른 방향에 대해 다각적인 고찰을 해보고자 한다.

본 연구는 현재 정부의 규제완화 및 다양한 대체서비스의 등장으로 인해 점차 시장내 경쟁이 심화되어 가고 있는 기업용 전용선 서비스 시장에 있어 향후 경쟁상황이 어떻게 진행될지에 대한 연구를 통하여 이에 속한 기업들의 향후 시장전략을 제시하는 것을 목적으로 하고 있다. 향후 경쟁상황을 예측하는데 있어 본 연구에서는 사용하는 방법론으로 첫째, 기업용 전용선 서비스 시장의 전체 수요예측을 우선적으로 실시한 후 둘째, 전체 시장의 수요를 바탕으로 이에 속하는 개별 서비스간의 경쟁관계와 대체관계에 의한 개별 서비스 수요를 예측하게 된다. 이상과 같은 서비스간의 수요를 도출함으로써 시장내 경쟁상황과 경쟁정도를 파악하게 된다. 현재 기업용 전용선 서비스 시장의 경우 가장 큰 특징이 바로 신규 대체 서비스들의 등장이고, 이들 서비스에 의해 전체 시장규모가 얼마나 성장할 것인지, 전체 시장에서 개별 서비스들의 기여도는 어느 정도가 되는지가 최대 관심사이다. 이에 대한 문제를 해결하기 위해 본 연구에서는 신규 대체 서비스가 시장에 진입하였을 때 파급효과가 얼마나 되는지를 추정하여 수요를 예측하였다. 이에 대한 추정결과 연구대상으로 하고 있는 전용회선서비스, 프레임릴레이서비스, 가상사설망서비스에서 전용회선서비스에 대한 타 유사서비스들의 영향력은 그리 크지 않는 것으로 나타났으며, 이에 반해 가상사설망서비스는 프레임릴레이서비스를 대체하고 있는 것으로 분석되었다. 연구 결과를 통해 사업자들은 향후 시장경쟁 상황을 예측할 수 있기 때문에 이에 대해 적절한 사업전략을 수립하는데 큰 도움을 얻게 되리라 기대한다.적 분할납품 전략 적용 수요지로 선택하고 사이버 거래를 통해 생성된 물류가 부분적 분할납품 전략 적용 수요지에 분배되게 함으로써 각 분배 센타의 재고 완충역할을 수행하게 한다. 이에 따라 안전 재고 및 역 배송을 최소화 할 수 있을 뿐 아니라 미 출고로 인한 손실을 최소화하며 고객의 서비스를 일정하게 유지시킬 수 있을 것으로 기대된다.증진, 페기물 발생 억제 분야에 상당한 성공을 거두었으며, 지금도 지속적으로 유지 관리 및 미비한 부분(CAER, 등)의 향상에 노력하고 있다. Dow Korea의 수입 판매 부분에 주로 관련된 Product Stewardship 및 Distribution Code는 여러 사업부 및 여러 지역(미국, 유럽, 아시아 등)에 위치한 담당자가 관련된 까닭에 가장 복잡한 부분이어서 많은 인력과 시간을 소비하면서 노력하고 있으나 아직까지 소정의 목표에 도달하지 못했으며, 2000년 말에 모든 실행지침이 실행되도록 목표, 실행 계획 및 조직을 수정하여 노력하고 있다.lumn density at distant position from MD5 is larger than that in the (:entral region. We have deduced that this hot-core has a mass of 10sR1 which i:s about an order of magnitude larger those obtained by previous studies.previous studies.업순서들의 상관관계를 고려하여 보다 개선된 해를 구하기 위한 연구가 요구된다. 또한, 준비작업비용

Telecommunication services are distinctive in that their adoptions are influenced by network effect resulting in 'the late take-off Phenomenon' and the 'critical mass' problem. In this paper we examined, so called, 'the late take-off phenomenon' in the diffusion process of telecommunication services. We compared the parameters of the diffusion process of consumer durables with those of fax services in the US and Korea. By analyzing the parameters of a new diffusion model based on the threshold model proposed by Markus, We found that 'the late take-off phenomenon' resulted from the low heterogeneity of the threshold distribution for the potential adopters.

As intensifying competition alters the dynamics of the wireless industry and carriers begin to tap out traditional subscribers-business users and early adopters-wireless operators have come under pressure to begin expanding their target subscriber base. While alternative market segments such as youths, senior citizens, and lower-income or credit-challenged customers often offer less compelling fundamentals (i.e., lower average revenue per user and higher churn rates), carriers, in their race to increase market share, can no longer overlook these potential market segments. In particular, the youth market is a very appealing market segment for carriers to focus on for several reasons. Carriers in many parts of the world have already begun recognizing the compelling advantages of concentrating on youths and teens. This paper will examine the dynamics of the youth/teen population and what attributes make this group an appealing market for wireless carriers. In addition, it will take a look at new emerging technologies that may help carriers attract the youth market especially mobile data, entertainment applications, and wireless messaging. This paper also studies the sensation that carriers in Europe and Japan are achieving with the youth population and suggests how carriers in Korea can emulate that success.

As different service classifications for existing and new business data services, it is hard to gather necessary data for the service providers to set their strategies and regulations are also applied asymmetrically to each service provider. Therefore an appropriate market classification is required for the business data services. The Hendry model is selected in this paper to analyze substitution degree among services and then Hendry model is applied to competition among four business data services. As a result, it is shown that these services compete directly and future market shares of services are forecasted and positioning strategy for new services is considered.

Optical transport has been sucessfully developed as a fast information transfer since 1970s, and a WDM system, based on the wavelength division multiplexing technique, was implemented to the backbone network. The WDM technique is able to improve its data traffic by utilizing its optical fiber efficiently, and is suitable for an easy network operation and management. Therefore, trend for DWDM, which is known to be one of DWM system being currently used, and the direction for optical network development will be investigated in this study.

Fixed-mobile convergence services can be defined as the combination of previously separate fixed and mobile services, and networks and commercial practices. Examples of fixed-mobile convergence services include single voicemail box, single number and unified messaging across fixed and mobile networks. Recently as more voice is transferred to mobile networks, convergence services between fixed and mobile become more important. In Korea convergence services are only starting to become established, and are likely to become an important part of any operator's offering. In this paper, I search the different levels of fixed-mobile convergence services and the trends and regulations for fixed-mobile convergence services in major countries. And at the same time I also try to find a new direction of future regulatory principles related to fixed-mobile convergence services.

Human, physical damage is happened frequently to consumer's safety accident by product defect on modern industrial society. Accordingly, advanced nation including the United States of America enforce product liability law and is protecting consumer more actively from danger of product defect. Our country(Korea) may enforce product liability law since July, 2002, and if business does not grope effective confrontation way about PL, capital strength weak smaller enterprise and venture business corporation's competitive power may affect much corporation's competitive power enfeeblement and survival. This research supplement based on induction and operating QMS in smaller enterprise essential factor that corporations must equip according to product liability law enforcement. And we present integration quality management system model of Product liability to do so that smaller enterprises may can cope effectively at force of Product liability law.

한정된 무선 채널로 보다 많은 가입자에게 이동통신 서비스를 제공하기 위해서는 무선 채널의 효율을 높여야 하며 이를 위해 효율적인 위치등록 방법이 필수적이다. 본 연구에서는 이동기준 위치등록(movement-based registration, MBR)과 거리기준 위치등록(distance-based registration, DBR)의 성능을 평가하고 두 위치등록 방법의 성능을 비교한다. 본 연구에서는 육각형 셀 환경하에서 2차원 랜덤워크 모형 (2-dimensional random walk model)에 기반을 둔 이동성 모형을 이용하여 MBR과 DBR의 위치등록 부하를 구한다. 특히 기존의 수식과는 다른 형태의 DBR의 위치등록 부하에 대한 식을 제시하고 이를 이용하여 DBR이 MBR에 비하여 항상 우수한 성능을 나타냄을 보인다. 또한 다양한 경우에 대한 수리적 결과를 통하여 무선 채널에서의 신호 트래픽을 최소로 해 주는 최적 제어변수의 값을 제시한다. 본 연구의 결과는 시스템의 운용환경에 따라 적절한 위치등록 방법을 평가하는 데에 효과적으로 이용될 수 있다.

본 연구는 확률 프런티어(stochastic frontier) 분석방법을 사용, 1995년부터 1999년까지 한국, 미국, 일본의 136개 상업은행을 대상으로 효율성을 추정하였다. 분석결과에 의하면, 국내 은행의 효율성은 미국, 일본에 비하여 큰 차이가 나지 않았으나 금융위기 이후 급격히 떨어졌으며, 이후 다시 효율성이 향상된 모습을 보이고 있다. 반면 같은 기간에 국내 은행만을 대상으로 추정한 결과는 효율성의 큰 변동을 감지하지 못하고 있다. 이는 지역경제 전반에 걸친 충격이 있을 경우 국제비교를 하는 것이 타당함을 시사하고 있다.

현재까지 행해진 주식시장 거품에 관한 연구들은 주가를 형성하는 근본요인으로서 현금배당만을 고려하고 있다. 그러나 현금배당은 경영자에 의해 조정가능하므로 진정한 기업가치를 나타내는 신호로 보기 어렵다. 따라서 본 연구에서는 기업가치를 더 정확히 반영하기 위하여 기업의 자본상에 나타나는 자금변동을 고려한 '순현금배당'을 도입한다. 상태-공간 모형과 칼만필터링 추정법을 이용하여 KOSPI 시장 자료에 대해 실증분석한 결과, 현금배당만 고려할 때와 '순현금배당'을 고려했을 때 추정된 거품이 매우 다른 양상을 보였다. 특히 한국의 금융위기시점을 고려하여 볼 때 '순현금배당'을 이용한 것이 실제 현상과 더 잘 부합하는 것으로 나타났다. 이는 주식시장의 거품을 연구하는데 있어 현금배당과 자금변동을 함께 고려하는 것이 더 정확한 추정결과를 얻을 수 있음을 시사한다.

In this paper, we propose a new personalized information service method using multiple regression analysis for Internet shopping malls. We then apply the proposed method to Internet bookstore, and compare personalized Internet bookstore providing personalized book information with ordinary Internet bookstore providing random book information. Experiment results show that the personalization of Internet bookstore increases satisfaction and purchasing intent of customers.

e-Business는 최근 IT산업에서 가장 빈번히 등장하는 화두이다. 인터넷이 빠른 속도로 보급되고 시간과 공간의 한계를 극복할 수 있는 가능성을 제공함에 따라 기존의 오프라인 시스템들의 인터넷과 연동이 추구되고 있다. 인터넷과의 연동은 단순한 정보의 공유뿐만 아니라 지식, S/W, E/W 등의 거의 모든 IT자원들에 대한 공유를 촉발시키고 있다〔1〕. 1990년대 정보기술 아웃소싱은 괄목할 만한 성장을 가져왔다. 최근 새로운 종류의 아웃소싱 비즈니스 모델인 ASP(Application Service Providers)의 등장으로 정보기술 시장의 주요 이슈로 주목받고 있다. 하지만 아직 초기단계이기 때문에 수요층의 인식부족, 효과에 대한 확신 부족 등과 같은 여러 걸림돌이 있지만 e-Business의 핵심영역으로 발전할 것으로 전망된다. ASP는 e-Business관련 소프트웨어 및 어플리케이션을 배송하는 하나의 방식이다. 즉, ASP는 e-Business를 가능하게 하는 Enabler라고 볼 수 있다〔3〕. 본 연구는 ASP(Application Service Provider, 이하 ASP)의 서비스 품질의 차원을 분류하여 고객에게 보다 중요한 품질 요인을 찾기 위한 측정의 개념적 틀을 제시하고자 한다.

본 연구에서는 기업이 ASP(Application Service Provision)도입을 추진할 때, 사용자 입장에서 인지될 수 있는 위험요인들을 기존의 정보시스템 아웃소싱과 ASP의 문헌연구를 통해 도출하여 각각을 차원별로 범주화하고, 둘 간에 어떤 차이점과 유사점이 있는지를 알아봄으로써 기업이 성공적으로 ASP를 추진할 수 있는 토대를 제시함을 목적으로 한다.

Studies on quantity discounts have been in two directions since Buchanen[1] published that suppliers provide quantity discounts for price discrimination and for channel efficiency. The quantity discounts for price discrimination have been treated in economics. On the contrary, the quantity discounts for channel efficiency have been studied in production management with assumptions and focuses different from economics. In this paper, the differences in each area are analyzed and purchasing situations that supplier's motivation on quantity discounts occurs is analyzed and the purchasing situations for two-stage quantity discounts are specified. In conclusion, we suggest that suppliers can enhance channel coordination through two stage quantity discounts in these purchasing situations.

본 연구의 목적은 물류 네트워크의 구성을 원가 관점으로 최적화하는 것이다. 원가 관점에서 최적 물류 네트워크를 구성하기 위해서 제시한 모델링은 다음과 같이 구성되어있다. 먼저 각 공장의 생산 제품별 데이터를 기본으로 생산원가를 산출하고 흑은 가상(생산이 가능하지만 현재 생산하지 않은) 제품에 대해 생산원가를 추정한다. 둘째, 전 단계에서 산출한 생산원가 및 지역창고의 제품별 재고비, 거리에 따른 수송비용 등과 같은 물류 관련 비용 등을 이용하여 효과적인 수배송 양과 주어진 환경 하에서의 최적 네트워크 경로에 대한 모델링을 제시한다. 본 논문에서는 원가비용을 고려하여 생산단계에서 생산량을 구하고, 생산단계에서 구해진 생산량을 이용하여 네트워크 단계에서 최적의 경로를 결정하는 모델링을 제안하였다

eBusiness 환경속에서 기업들의 주요한 관심사는 eSCM 통합을 통한 경쟁력 획득에 있다. 파트너쉽에 기반한 성공적인 eSCM 통합을 이루고, 궁극적으로는 고객 만족을 달성하기 위해서는 eSCM에 대한 참여 기업 간 공동 성과 측정 시스템을 만들고, 이를 통해 공급사슬 통합에 관련된 비용/효과에 대해 명확하게 이해하도록 하는 것이 핵심이다. 이러한 참여 기업들 사이의 공동의 성과 측정시스템을 활용하기 위해서는 재무적 그리고 비재무적 성과 사이의 균형을 성취하기 위한 강력한 도구인 Balanced Scorecard와 eSCM의 연계에 기반한 드릴다운(drill-down) 방식의 성과 측정을 통해 공급사슬의 다른 수준에 대한 성과 측정이 이루어져야 한다. 본 연구에서는 BSC와 eSCM의 연계를 위해 BSC를 eSCM관점에서 재정립하고, 드릴다운(drill-down)방식에 기반한 eSCM 성과 측정 시스템 활용을 위한 기본 틀을 제시하고자 한다.

주어진 계획량을 최소의 비용으로 생산하는 것이 제조 공장의 최대 관심사이다. 단일 공장의 경우 제품의 종류에 따른 최적의 생산량만을 결정하면 되지만, 복수의 공장의 경우 각 공장에 따라 제품별 생산원가의 차이가 발생하기 때문에 복수의 공장일 경우 단일 공장과 같이 간단하게 제품별 최적 생산량을 결정할 수 없다. 이에 본 연구에서는 몇 가지 현실적인 가정 하에 복수의 공장에서 제품별 최적 생산량을 결정하는 알고리즘을 제안하였다. 즉 현재 생산이 가능하지만 현실적인 조건으로 인하여 생산하지 않는 제품의 생산 원가를 추정하고, 이를 바탕으로 각 공장별로 제품의 최적 생산량을 결정하는 문제에 대한 모델을 제시하였다.

Advances in computer and sensor technology have made it possible to obtain superlarge manufacturing process data in real time, letting us to extract meaningful information from these superlarge data sets. We propose a systematic data analysis procedure which field engineers can apply easily to manufacture quality products. The procedure consists of data cleaning and data analysis stages. Data cleaning stage is to construct a database suitable for statistical analysis from the original superlarge manufacturing process data. In the data analysis stage, we suggest a graphical easy-to-implement approach to extract practical information from the cleaned database. This study will help manufacturing companies to achieve six sigma quality.