• Title/Summary/Keyword: hub network

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A Social Network Analysis of Research Topics in Korean Nursing Science (한국 간호학 연구주제의 사회 연결망 분석)

  • Lee, Soo-Kyoung;Jeong, Senator;Kim, Hong-Gee;Yom, Young-Hee
    • Journal of Korean Academy of Nursing
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    • v.41 no.5
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    • pp.623-632
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    • 2011
  • Purpose: This study was done to explore the knowledge structure of Korean Nursing Science. Methods: The main variables were key words from the research papers that were presented in the Journal of Korean Academy of Nursing and journals of the seven branches of the Korean Academy of Nursing. English titles and abstracts of the papers (n=5,936) published from 1995 through 2009 were included. Noun phrases were extracted from the corpora using an in-house program (BiKE Text Analyzer), and their co-occurrence networks were generated via a cosine similarity measure, and then the networks were analyzed and visualized using Pajek, a Social Network Analysis program. Results: With the hub and authority measures, the most important research topics in Korean Nursing Science were identified. Newly emerging topics by three-year period units were observed as research trends. Conclusion: This study provides a systematic overview on the knowledge structure of Korean Nursing Science. The Social Network Analysis for this study will be useful for identifying the knowledge structure in Nursing Science.

A basic Research on the Euro-Asian Continental Rail Corridor for Effective Connection and Operation (대륙횡단철도 연계운영의 효율화를 위한 기초조사)

  • Na Hee-Seung;Son Ji-Eon;Cho Young-Geol
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.534-541
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    • 2004
  • To boost the Korean peninsula as a logistical hub of North-East Asia in 21st century is an important part of Korean development strategies. This research has been conducted on the premise that the connection and operation of the Korean Peninsula break-railway and Euro-Asian railway network will be a great drive for Korean economy and railway technology development. For the preparation to do a further research on this subject, this paper introduces the general condition and related basic material for the railway network operation through the countries along the corridor. It also provides the basic data of railway and actual operation condition in the involved Euro- Asian areas, such as Russia, China, Mongolia, Kazakh-stan, etc.

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Mobile Home Network Service (모바일 홈 네트워크 서비스)

  • Shin Yong-Sik;Lee Jung-Su;Park Yong-Gil;Jung Won-Suk
    • 한국정보통신설비학회:학술대회논문집
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    • 2003.08a
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    • pp.329-331
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    • 2003
  • 본 논문에서는 통합 및 유비퀴터스(Ubiquitous) 환경의 실현을 위한 첫 단계 서비스라 할 수 있는 모발일 홈 네트워크 서비스에 대해 살펴본다. 따라서 모바일 홈 네트워크(mobile Home Network, mHN) 서비스의 개념 및 이를 제공하기 위해 존재하는 가치사슬, 서비스 모델 및 필요기술 등을 제시한다. 본 논문에서는 서비스 모델을 크게 P2P, Semi P2P, 통합형 (Hub & Spoke)으로 구분하여 각 모델의 특징을 살펴본다. 특히, 통합형 모델을 위한 서버의 서비스, 제어 및 관리 기능과 관련 노드들과의 연동을 위한 인터페이스 등을 나타낸다. 뿐만 아니라 댁내와 댁내의 연결 노드인 홈 게이트웨이의 구조 및 기능 들을 살펴보고 마지막으로 다양한 모바일 홈 네트워크 서비스의 예를 제시한다.

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System Thinking for Increasing the Operational Efficiency of Door-to-door Delivery Network (택배네트워크의 운영효율성 증진을 위한 시스템 사고)

  • Choi, Kang-Hwa
    • Korean System Dynamics Review
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    • v.12 no.1
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    • pp.89-114
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    • 2011
  • With steady increase in the demand for door-to-door delivery services, courier service providers are facing a constant pressure to reduce delivery price in order to secure quantity order and to improve the efficiency and reliability for customer service. The objective of this research is to explain the structure of the door-to-door delivery including door-to-door delivery service demand, sorting capacity in the hub-terminal, and the system performance measures such as service reliability networks using causal loop diagram(CLD). Based on causal relation, this research describes a comprehensive approach to examine how capacity reliability contributes to the renewal of the firm's competences through its reciprocal relationship with travel time reliability and connectivity reliability. Also, this research suggests the policy alternatives to improve effectiveness and efficiency of door-to-door delivery network in response to increase customer satisfaction and profit maximization of the courier service providers: operational, tactical, and strategic levels.

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Designing hierarchical ring-star networks under node capacity constraints (설비용량을 고려한 계층적 네트워크의 설계 및 분석)

  • 이창호;윤종화;정한욱
    • Journal of the Korean Operations Research and Management Science Society
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    • v.19 no.1
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    • pp.69-83
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    • 1994
  • This paper deals with a capacitated ring-star network design problem (CRSNDP) with node capacity constraints. The CRSNDP is formulated as a mixed 0-1 integer problem, and a 2-phase heuristic solution procedure, ADD & VAM and RING, is developed, in which the CRSNDP is decomposed into two subproblems : the capacitated facility location problem (CFLP) and the traveling sales man problem (TSP). To solve the CFLP in phase I the ADD & VAM procedure selects hub nodes and their appropriate capacity from a candidate set and then assigns them user nodes under node capacity constraints. In phase II the RING procedure solves the TSP to interconnect the selected hubs to form a ring. Finally a solution of the CRSNDP can be achieved through combining two solution of phase I & II, thus a final design of the capacitated ring-star network is determined. The analysis of computational results on various random problems has shown that the 2-phase heuristic procedure produces a solution very fast even with large-scale problems.

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Reengineering the Structure of Knowledge Sharing Network

  • 남수현
    • 한국디지털정책학회:학술대회논문집
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    • 2005.11a
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    • pp.209-220
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    • 2005
  • 지식경영은 기업의 지속적 경쟁력을 제공하는 중요한 경영기법으로 인식되고 있다. 그러나 많은 기업에서 know-how 지식이나 know-where 지식을 축적하여 놓고 관련 평가체계를 잘 정립하면 향후 사용될 것이라는 전제하에 지식관리를 하고 있는 실정이다. 이러한 관점에서 본 논문은 지식관리를 조직업무형태에 따른 체인, 허브, 웹 유형으로 구분, 관리함이 효과적일 것이라는 가설을 기존 논문을 근거로 도출하였다. 이 중에서 가장 관리하기가 어렵다고 판단된 웹 혹은 네트워크 유형의 지식관리를 체계적으로 하기 위해서는 네트워크의 구조 자체에 대한 분석이 클러스터링 계수와 네트워크를 확장하는 역할을 담당할 수 있는 구성원에 대하여 이루어져야함을 e-Business 모델을 이용하여 제시하였다. 이러한 네트워크의 선행분석은 기존의 지식관리방법론을 보다 적극적인 관점에서 계획 및 통제할 수 있는 수단을 제공할 수 있을 것으로 판단된다.

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A New Sort of Study upon Devices Life Span Advancement Techniques with Wireless Sensor Communities

  • KRISHNA, KONDA HARI;NAGPAL, TAPSI;BABU, Y. SURESH
    • International Journal of Computer Science & Network Security
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    • v.22 no.7
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    • pp.51-56
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    • 2022
  • In the previous years, Wireless Sensor Networks (WSNs) have increased expanding consideration from both the clients and scientists. It is utilized as a part of different fields which incorporate ecological, social insurance, military and other business applications. Sensor hubs are battery fueled so vitality imperatives on hubs are extremely strict. At the point when battery gets released, sensor hub will get detached from remaining system. This outcomes in connection disappointment and information misfortune. In a few applications battery substitution is likewise impractical. Consequently, vitality proficient strategies ought to be outlined which will upgrade lifetime of system and precise information exchange. In this paper, diverse wellsprings of vitality dissemination are recorded trailed by vitality effective systems to improve lifetime of the system.

A Study of China's Condition as the Logistics Hub of Northeast Asia and a Development Strategy (중국의 동북아 물류중심화 현황과 발전전략에 관한 연구)

  • Oh, Moon-Kap
    • Journal of Distribution Science
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    • v.12 no.2
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    • pp.95-103
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    • 2014
  • Purpose - Korea has a better geographical location than other nations in the Northeast Asian region. This means that Korea has an opportunity to become the center of international physical distribution in Northeast Asia. Korea should take advantage of this opportunity by exploring appropriate strategies to achieve this goal, assuming government willingness, with a view to capitalizing on the geographical advantage of the Korean peninsula and constructing a comprehensive physical distribution network system. If we prepare for this scenario, Korea could become the center of international physical distribution in Northeast Asia. Research design, data, and methodology - This study has the purpose of determining how shipping companies form partnerships with third-party logistics providers, and the relevant implications. The survey methods used were personal interview and a questionnaire distributed through e-mail, fax, mail, and telephone. A total of 600 questionnaires were distributed, out of which 285 were returned. Of the collected questionnaires, 10 were excluded because of insufficient content, leaving 275 to be used in the study as available valid samples. The data that was collected from these samples was analyzed using the data coating process and by employing a statistical package program. Results - Flexible policies, administration, and systems will be needed to create better business practices. In this dissertation, first and foremost, the results reveal that in order to become the center of Northeast Asian logistics, Korea must transition into a new paradigm based on the current economic and social systems that have stemmed from bureaucracy, inflexibility, chauvinism, and egalitarianism. Flexible policies, administration, and systems will be required to create better business practices. Domestic logistics corporations need to occupy a strategic logistics hub, create a logistics network, and activate value-added logistics business strategies by ensuring significant manpower and by building a logistics information system to strengthen their competitive edge, creating an improved system. Conclusions - In this dissertation, first and foremost, we point out that in order to become a center of North East Logistics, Korea should change to a new paradigm from the old one based on current economic and social systems that have stemmed from bureaucracy, inflexibility, chauvinism, and egalitarianism. More reasonable business laws, systems, and policies based on market-driven flexibility and transparency should be created. Moreover, social norms and rules should be reasonably established, to accomplish political and social security. Korea has to cultivate a culture of tolerance for foreign companies. This involves a change of paradigm for the development of the capital city and satellite cities. It will take a powerful task force or organization to plan and execute the vision that aims to meet these needs, accomplish the necessary goals, use the appropriate system effectively, and make Korea a key country in the field of Northeast Asian logistics.

A Study on the Selecting Factors of Manufacturing and Logistic Hub in Far Eastern Area (극동지역 제조 및 물류거점 선정요인 중요도 분석에 관한 연구)

  • Kim, Hak-so;Han, Ji-young
    • Journal of Korea Port Economic Association
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    • v.32 no.4
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    • pp.29-39
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    • 2016
  • As geopolitical, archaeological and strategic interests on cooperation with countries in the Far Eastern Area is gradually increased, countries are competing to attract or install a logistics or manufacturing hub in their countries. In this study, we investigated the relative importance of factors on the main three and nine detailed criteria from the domestic and overseas experts on Far Eastern Area. Using AHP(Analytic Hierarchy Process) analysis, priority importance of factors was derived. As a result, we find that the most important factor was economic factor. In detail, industrial complex creation was the highest factor and the institutional guarantees for the investment on policy and transportation network was second highest factor. Based on analysis result, specific competitiveness level in the 10 region of Far East was follows. Hunchun, Vladivostok, Yanji, Tumen, Rajin, Hassan, Ussuriysk, Cheongjin, Mihaylov Skiing, Nije Jeuchinski were showed in order. Hunchun showed the highest competitive level in location, topography, compliance to the around cities, transportation network, industrial complex, excellence in logistics facilities, long-term investment plans, institutional guarantees for investment, customs efficiency and political stability. However, in other factors such as population and number of households, public facilities, potential demand and resource utilization, Vladivostok showed the highest level.

The Strategy for the Position and Development of the Land Logistics System of the Korean Peninsula (한반도의 동북아 육상물류체계 위상과 발전 전략에 관한 연구)

  • Kim, Hong-Seop
    • Journal of Korea Port Economic Association
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    • v.32 no.2
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    • pp.1-24
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    • 2016
  • Northeast Asia is changing rapidly, including becoming an increasingly important part of the world economy. Various logistical systems and networks are being established in this area, including South and North Korea, China, Japan, Russia, and Mongolia. Thus, a new systematic logistical network and development strategy is required. The division of the Korean peninsula has for a long time made the region ineffective in terms of land logistics. South Korea's connection to Eurasia is blocked by North Korea, which means it is essentially treated as an island. Furthermore, South Korea does not have an efficient logistics system or effective vision and strategy. Northeast Asia has the potential to be one of the largest economic communities in the world, similar to the EU and North America. Thus, a united Korea can play an important role as the land bridge of Northeast Asia and the logistical hub of the region. This study reviews the logistical position, tasks, and problems of the Korean peninsula and suggests a desirable development strategy and vision. Specifically, after examining the conditions for a land logistical system, focusing on railways, this study proposes several future-oriented development strategies and tactics that will position the peninsula as a logistical hub in Northeast Asia. We anticipate that this study will serve as the basis for future research that will investigate the topics presented here in more detail.