• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권4호
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• pp.1817-1836
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• 2020

Network convergence is considered as one of the key solutions to the problem of achieving future high-capacity and reliable communications. This approach overcomes the limitations of separate wireless technologies. Efficient interface selection is one of the most important issues in convergence networks. This paper solves the problem faced by users of selecting the most appropriate interface in the heterogeneous radio-access network (RAN) environment. Our proposed scheme combines a hierarchical evaluation of networks and game theory to solve the network-selection problem. Instead, of considering a fixed weight system while ranking the networks, the proposed scheme considers the service requirements, as well as static and dynamic network attributes. The best network is selected for a particular service request. To establish a hierarchy among the network-evaluation criteria for service requests, an analytical hierarchy process (AHP) is used. To determine the optimum network selection, the network hierarchy is combined with game theory. AHP attains the network hierarchy. The weights of different access networks for a service are calculated. It is performed by combining AHP scores considering user's experienced static network attributes and dynamic radio parameters. This paper provides a strategic game. In this game, the network scores of service requests for various RANs and the user's willingness to pay for these services are used to model a network-versus-user game. The Nash equilibria signify those access networks that are chosen by individual user and result maximum payoff. The examples for the interface selection illustrate the effectiveness of the proposed scheme.

• Asia pacific journal of information systems
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• 제25권2호
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• pp.239-264
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• 2015

This study aims to investigate the effect of message content and source user identity on information diffusion in Twitter networks. For the empirical study, we collected 11,346 tweets pertaining to the three major mobile telecom carriers in Korea for three months, from September to December 2011. These tweets generated 59,111 retweets (RTs) and were retweeted at least once. Our analysis indicates that information diffusion in Twitter in terms of RT volume is affected primarily by the type of message content, such as the inclusion of corporate social responsibility activities. However, the effect of message content on information diffusion is heterogeneous to the identity of the information source. We argue that user identity affects recipients' perception of the credibility of focal information. Our study offers insights into the information diffusion mechanism in online social networks and provides managerial implications on the strategic utilization of online social networks for marketing communications with customers.

• 한국산학기술학회논문지
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• 제12권8호
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• pp.3446-3451
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• 2011

지역경쟁력 확보 및 지역경제활성화를 위한 중요한 결정 요소로서 산업 클러스터가 관심을 받고 있는 현 시점에서 한국의 산업단지 클러스터들의 전략적 포지셔닝을 평가하여 경쟁전략을 수립할 필요가 있다. 이를 위하여 7개 지역 산업단지 클러스터의 근접성, 네트워크, 상호관계, 매출성과 등과 관련된 보유역량과 생산성과 성장성을 기준으로 파악된 잠재적 매력도를 기준으로 분석한 전략적 포지셔닝을 제시하고 문제점과 전략방향을 제시하고자 한다. 또한 한국의 지역 산업클러스터의 경쟁전략을 수립하는데 시사점을 주고자 세계 각국의 선진 산업 클러스터를 분류하고 현황 및 전략적 포지셔닝을 분석하였다.

• The Journal of Asian Finance, Economics and Business
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• 제5권2호
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• pp.119-128
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• 2018

A primary goal of transnationals is to offer their vision for selling products or services so that they are relevant to local cultures. The purpose of this study is to provide a solution for how transnational companies face various environments and how they can utilize and overcome them and survive strategically. This study will present strategic recommendations for transnational organizations. First, transnational organizations should identify the core areas where organizational can invest or allocate its precious resources to get full advantage of the attractive opportunities form the market and focus on building strong networks with the key stakeholders. Second, they should manage the knowledge flows and provide strategic direction in cooperative venture for the long term successful future and ensure that every department has an effective coordination with other departments in order to bring about the organizational change. Lastly, they should overcome the challenges managers face in a transnational business environment when companies expand their operations into international markets. The managers need to assess the organization's strengths and weaknesses and evaluate different forces which are present in the external environment. And then, Managers have to ensure that the company has sufficient resources, core competencies and capabilities.

• 대한산업공학회지
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• 제37권4호
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• pp.304-310
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• 2011

The express courier business in Korea has been recognized as one of promising business sectors with the annual growth rate of over 10 percent since 2001. As such many domestic and foreign companies have been established and are fiercely competing to extend their own market share. The severe competition has forced them to focus on achieving cost competitiveness and high level of customer service. Small and medium-sized enterprises( SMEs) with relatively poor network infrastructure in particular are facing tougher challenges to cost reduction and efficiency improvement in their logistics networks. Strategic alliances among SMEs may be an effective way to cope with these challenges. Therefore this study proposes an integer programming model for compromised network design and its solution procedure based on maxmin and maxsum criteria for strategic alliances. The applicability and efficiency of the proposed model are demonstrated through an illustrative numerical example.

• 한국언론정보학보
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• 제46권
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• pp.387-419
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• 2009

유사한 자원을 가지고 유사한 전략을 사용하는 기업들의 집합체로 정의되는 '전략 집단 (strategic group)' 개념은 기업과 산업의 중간에 위치하여 산업조직론과 전략경영의 접점이 되고 있다. 본 연구는 경영학 분야에서 주로 적용되었던 '전략 집단'의 개념을 방송채널사용 사업자(Program Provider) 산업에 적용하였다. 본 연구는 국내 PP시장에는 몇 개의 전략 집단이 존재하며, 집단 간 전략적 변수의 차이는 무엇이며, 전략 집단별 PP의 성과는 어떤 차이가 있는지를 살펴보고자 하였다. 이러한 목적을 위하여 40개 상업 PP를 분석하였다. 전략 집단 분류 변수를 이용, 군집 분석을 실시한 결과 9개의 군집으로 분류되었다. 전략 집단 구분시 군집 형성에 상대적으로 기여도가 큰 변수는 운영 효율성(4.05), 가격(3.83), 규모, 즉 SO 송출수(3.56), 수신료 의존도(2.58), 수평 결합(2.16) 등의 순이었다. 전략 집단간 재무성과 간의 관계를 조사하기 위해서, 성과 변수 간에 분산 분석을 실시한 결과, 전략 집단 간에 가입자당 매출액은 유의적 차이가 있었지만, 매출액 영업 이익률, 현금흐름 비율은 통계적으로 유의미하지 않았다. 기존 연구에서는 역사가 오래된 PP가 성과가 높거나 전략 집단 형성에 크게 기여한다고 하였다. 그러나 이번 연구에서는 역사 변수 역시 집단 구분이나 성과에 큰 영향을 미치지는 않는 것으로 나타났다.

• Journal of Biosystems Engineering
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• 제36권6호
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• pp.491-499
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• 2011

The objective of this study was to develop the export strategic core technologies for IT fusion next generation agricultural machines by the analysis of comprehensive and cooperative systems of industries, universities, and institutes. In order to achieve the objective of this study, an expert panel was formed and operated. The first survey was conducted by the Delphi method. For this the export strategic core technologies were surveyed and analyzed using the questionnaire. Based on the results of the first survey, the second survey was conducted. The questionnaire used for the second survey was designed by results of the first survey. The results of the second survey was analyzed by AHP method. The third survey was conducted based on the second one, and the final results were analyzed and the export strategic core technologies were developed through the expert meeting. The study results showed six export strategic core technologies as the followings : 1) environment-friendly engine technology for high performance 2) high performance/high efficiency power transmission system technology 3) development of measurement system technology for safety of agricultural products 4) field application of sensor networks 5) large size combine development technology for high performance 6) quality evaluation technology for agricultural products.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1387-1390
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• 2005

Recently, foreign utilities emphasize the importance of the value-added services based on Information Technology(IT) as one of the strategic technologies for establishing a new power system in the future digital society. They develop many different types of the value-added services and apply the systems for customer. In domestic case, the data from the Automatic Meter Reading (AMR) System is used only for calculating the tariffs. Data from the AMR system can be strategic assets for utilities to provide the value-added services for customer. Development of the value-added services for utilities and customer needs processing and managing the AMR data. In this paper, the energy consulting service, which is adequate to new power system environment, is suggested for development of the value-added services. The application of the suggested service will bring the effect of reducing the monthly bill for customer. Also the service will give not only the effective demand side management(DSM) and load control, but also reduction of the investment for utilities.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2006년도 가을 학술발표논문집 Vol.33 No.2 (D)
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• pp.199-204
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• 2006

오버레이 멀티캐스트는 IP 멀티캐스트의 대안으로 많은 관심을 받아 왔다. 본 논문에서는 오버레이 멀티캐스트에서 각 단말의 특성에 따라 적응적으로 멀티미디어를 전송하는 기법을 연구하였다. 데이터 기반으로 컨텐츠를 전달하는 피어-투-피어 형태의 전송 구조를 사용하여 각 단말이 네트웍 특성에 따라 데이터를 요청하는 형태로 구성되었다. 이웃 노드 선택, 버퍼 맵 교환, 필요한 데이터를 전송 요청하는 과정으로 구성되는 피어-투-피어 형태의 전송 구조에서 적응적인 멀티미디어 전송을 지원하기 위하여 전략적 세그먼테이션을 통한 버퍼 맵 교환, Fine-grained 적응 스케줄러를 통한 데이터 교환을 제안하였다. 본 연구에서 적용된 기법의 특성을 분석하기 위하여 정성적인 분석 모델을 제시하고 이를 통해 결론을 도출하였다.

• Safety and Health at Work
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• 제4권2호
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• pp.87-94
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• 2013

Background: In times of continuous change and volatile markets, organizations are increasingly characterized by downsizing, work intensification, and resource rationalization. This has resulted in diversification, and the emergence of newrisks within the field of occupational health and safety, with an important impact. This paper focuses on one such type of risk in the modern workplace-psychosocial risks. The current study aimed to explore stakeholder perspectives, regarding the extent to which psychosocial risks are incorporated into strategic risk management practices, at both the business and policy level. Methods: Semi-structured interviews were conducted with 14 professionals, representing employer, expert, policy maker, and trade union stakeholder perspectives. Results: It was found that the majority of organizations do not sufficiently, if at all, understand and incorporate psychosocial risks into strategic decision making, whereby the key barrier related to practical difficulties of not knowing how to manage psychosocial risks adequately. Conclusion: The study found that there is a need to close the gap between policy and practice on a number of levels. Future recommendations comprise a policy framework and infrastructure underpinned by educational initiatives, partnerships, and networks to drive a shift in attitudes toward recognizing the duality of the concept of risk (including both potential negative and positive outcomes) and moving beyond simple regulatory compliance.