• Korean Management Science Review
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• v.10 no.1
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• pp.107-125
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• 1993

Modern telecommunication switching systems are SPC(Stored Program Control) machines handling voice, data and other kinds of traffic, in an environment which tends to be fully digital switching and transmission. The throughput of such systems is determined by the real time capacity of its centralized or distributed control processors and by the traffic capacity of the switching network. Designers must verify the traffic and call processing capacity of the switching system and check its performance under traffic load before it is put into service. Verification of traffic and call processing capacity of switching systems is one of the problems treated by teletraffic studies ; teletraffic studies are based on stochastic process, queueing theory, simulations and other quantitative methods of decision making. This study suggests the general methodology to evaluate the throughput and performance of the ISDN switching system. TDX-10 ISDN switching system are employed to give illustrative examples of the methodologies discussed in this study.

• Korean Management Science Review
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• v.21 no.2
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• pp.27-42
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• 2004

Assimilation is defined as the extent to which the use of a technology diffuses across organizational work processes and becomes routinized in the activities associated with those processes. Assimilation is an important construct in the casual chain of influence from the organizational adoption of an information technology to the evidence of its impacts on business performance. Given a wide range of experiences with the effective assimilation of Web technologies. there is a need to discover how firms can institutionally encourage the managerial activities that will result in greater levels of technology assimilation. This study analyzes or shows which organizational and strategical factors like management belief. management participation. strategic investment rationale and coordination mechanism have impact on the assimilation of web technologies. Moreover. this research is tried under the different types of firms. manufacturing and service firms. The result shows that the management belief among the determinants had a significant effect on the assimilation of web technology. However. the result would be generalized with the inclusion of the psychological factors to the current model.

• Korean Management Science Review
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• v.24 no.1
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• pp.25-34
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• 2007

In this study, we consider stationary waiting times in finite-buffer 3-node single-server queues in series with a Poisson arrival process and with either constant or non-overlapping service times. We assume that each node has a finite buffer except for the first node. The explicit expressions of waiting times in all areas of the stochastic system were driven as functions of finite buffer capacities. These explicit forms show that a system sojourn time does not depend on the finite buffer sizes, and also allow one to compute and compare characteristics of stationary waiting times at all areas under two blocking rules communication and manufacturing blocking. The goal of this study is to apply these results to an optimization problem which determines the smallest buffer capacities satisfying predetermined probabilistic constraints on stationary waiting times at all nodes. Numerical examples are also provided.

• Korean Management Science Review
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• v.30 no.2
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• pp.1-10
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• 2013

Case studies are made to investigate the relationship between the accuracy of energy production estimation and project feasibility indicators such as rate of return on equity (ROE) and debt service coverage ratio (DSCR) for three wind farm projects. It is found out that 1% improvement in the accuracy of energy production estimation may enhance the ROE by more than 0.5% in the case of P95, thanks to improved financing terms. AHP survey shows that MCP correlation of measured in situ wind data with long term wind speed distribution and hands-on experiences of flow analysis are more important than other factors for more precise annual energy production estimation.

• Journal of Korea Technology Innovation Society
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• v.8 no.2
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• pp.860-885
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• 2005

This study relates to develop a quantitative method through which promising technology-based business items can be discovered and selected. For this study, we utilized patent trend analysis, technology-industry concordance analysis, and keyword co-occurrence analysis of US patents. By analyzing patent trends and technology-industry concordance, we were able to find out the emerging industry trends : prevalence of bio industry, service industry, and B2C business. From the direct and co-occurrence analysis of newly discovered patent keywords in the year, 2000, 28 promising business item candidates were extracted. Finally, the promising item candidates were prioritized using 4 business attractiveness determinants; market size, product life cycle, degree of the technological innovation, and coincidence with the industry trends. This result implicates that reliable discovery and selection of promising technology-based business items can be performed by a quantitative, objective and low- cost process using knowledge discovery method from patent database instead of peer review.

• Proceedings of the Safety Management and Science Conference
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• 2005.05a
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• pp.485-498
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• 2005

In these days, there is doubt about the effectiveness of ISO-9000 and ISO-14000 which are generally introduced in korean corporation by the consensus and even by corporations themselves. In order to find out the reason about the doubt, we should understand the present situation, and consider what countermeasure shall we take. It's obvious that if there is no doubt about the effectiveness and availability for quality system authenticated and verified by the international, then all the authentication can be made from that excellent system. In that case, it is necessary to find out whether it only exists in Korea or it generally exists internationally. This thesis considers the problems and try to search for a system management project and measure which is suitable for Korea.

• Electronics and Telecommunications Trends
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• v.14 no.1 s.55
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• pp.36-52
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• 1999

본 고에서는 ATM 통신망에서 시험의 필요성, 종류 및 방법 그리고 시험 시스템의 기능 등에 대해서 기술하였다. ATM은 보다 높은 속도를 제공하고 통신망의 QoS(Quality of Service)를 제어하며 보다 효율적으로 통신망 자원을 사용할 수 있는 방법을 제공한다. 그러나 이러한 모든 서비스를 만족시키기 위해서는 신뢰성이 필요한데 큰 용량과 복잡한 특성을 갖는 ATM 통신망은 서비스 열화와 고장에 매우 민감하다. 이를 해결하기 위한 최선의 방법이 ATM 구성요소와 시스템 수준에서 엄격하고 표준화된 시험을 통해서 이루어진다. 본 고에서는 여러 국제 표준화 기관에서 ATM 통신망에 대한 시험의 표준화 동향에 대해서 기술하였다. 또한 표준화된 시험 방법을 수행하기 위해서 시험 수행방법과 통신망 및 시험 시스템에 대한 문제점을 기술하였으며, 이러한 문제점을 극복하기 위한 시험 자동화, 효율적인 시험 방법 등에 대해서도 기술하였다. 또한 ATM 통신망 시험에서 많이 사용되는 시험 시스템의 기능을 분류하고 시험실 수준의 테스트베드(testbed) 구축방법을 제안하였다.

• International Journal of Advanced Culture Technology
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• v.6 no.1
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• pp.32-41
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• 2018

The aim of this study is to formulate a trust-based business model of Internet services in so called the "trust economy." For it, firstly concepts of trust and trust economy are discussed. Then, we present previous literatures' review of trust in social science prism and trust economy in economic prism. This study classified the literatures' stances with two viewpoints of the 'system' and the 'user'. With this backdrop, we discuss three contradictory stances: Internal optimization vs. external interaction, personal data control vs. orchestration, and end-user vs. ecosystem value. In the result, we formulate a trust-based business model framework with three trust issues in user perspective and suggests three strategic directions related three issues along with representative use cases.

• Journal of Agricultural Extension & Community Development
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• v.16 no.2
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• pp.337-362
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• 2009

The purposes of this study are to review the community-based care programs for the elderly among NPOs, focused on the Regional Council on the Social Welfare and Elderly Club, in Japan and to examine the way these programs help the community elderly to live independently in their own home in the community. First, the community welfare policy for the aged and service delivery organizations in Japan are reviewed. Second, using the informations about the elderly support programs carried out by the Regional Council on the Social Welfare and Elderly Club, various kinds and processes of specific programs developed to meet the local characteristics are introduced. Applicability of these programs to rural Korea is discussed.

• International Commerce and Information Review
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• v.6 no.2
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• pp.171-191
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• 2004

Recently, RFID(Radio Frequency IDentification) is observed with government and connection enterprises as the central figure. RFID utilizing radio is a technology that enable exchange of information sensing and recognize object. RFID is expected that the practical use limits widens by territory that can form vast market such as logistics management according to RFID's low-cost aggravation as well as usage of life and improvement of performance because present R&D is gone vigorously. Because RFID is possible application everywhere if it is various service industries as well as logistics, industry spot, manufactory and place that flowing of goods is, is used, and is becoming big limelight from society several territories.