• Journal of the Korean Physical Society
• /
• 제73권10호
• /
• pp.1589-1595
• /
• 2018

Similarity index measures the topological proximity of node pairs in a complex network. Numerous similarity indices have been defined and investigated, but the dependency of structure on the performance of similarity indices has not been sufficiently investigated. In this study, we investigated the relationship between the performance of similarity indices and structural properties of a network by employing a two-state random network. A node in a two-state network has binary types that are initially given, and a connection probability is determined from the state of the node pair. The performances of similarity indices are affected by the number of links and the ratio of intra-connections to inter-connections. Similarity indices have different characteristics depending on their type. Local indices perform well in small-size networks and do not depend on whether the structure is intra-dominant or inter-dominant. In contrast, global indices perform better in large-size networks, and some such indices do not perform well in an inter-dominant structure. We also found that link prediction performance and the performance of similarity are correlated in both model networks and empirical networks. This relationship implies that link prediction performance can be used as an approximation for the performance of the similarity index when information about node type is unavailable. This relationship may help to find the appropriate index for given networks.

• 분석과 대안
• /
• 제2권1호
• /
• pp.107-125
• /
• 2018

This paper aims to elucidate the historical significance and issues about DPRK-Japan relations in terms of the Korean Peninsula-Japan relations. The first issue is the 'Treaty on Basic Relations between Japan and the Republic of Korea', and DPRK-Japan relations during the Cold War. The Relations Order between the Korean Peninsula and Japan, of 1965 ("65 Order), was closely linked with inter-Korean relations. The second issue is a critical re-interpretation of previous studies on the Stockholm agreement. Previous studies have focused on analyzing the question "Why did North Korea and Japan agree to Stockholm?", In other words, what was the intention of North Korea and Japan in Stockholm? This paper adds to raise the question of "How Did the Stockholm can be agreed?", to critically review the analysis performed by the previous studies. Through the analysis of this question, this paper reveals that the relationship between North Korea and Japan is on the qualitative change. And, based on this analysis, this paper argue that the South Korean government should attempt more active engagement and deploy more comprehensive approach to improve the relationship between North Korea and Japan.

• 한국물환경학회지
• /
• 제27권6호
• /
• pp.932-937
• /
• 2011

Main objectives of this paper were; firstly, to explain impacts of suspended solid in the water body on the relationship between water quantity and water quality; secondly, study on the inter-relationship between organic materials, nutrients, pathogens, and suspended solids considering eco-friendly water resources. Relationship between water quality and water quantity is not easy to understand as it includes physicochemical-biological reactions and diffuse pollutions. Especially, suspended solid makes water resource management difficult. Eroded soil in the upper land transported to the downstream by water flows carrying biological and physicochemical information and sedimented in the downstream. As sediment scoured under high flow condition and environmental change, suspended solid and sediment should be emphasized for understanding the inter-relationship between water quality and water quantity. Knowledge gaps between known monitored data and management of suspended solid were identified as well for future study.

• 한국비블리아학회지
• /
• 제16권2호
• /
• pp.225-240
• /
• 2005

직업 및 직무변화를 심각하게 경험하고 있는 분야가 정보관리 및 서비스분야라고 할 수 있다. 본 논문에서는 정보관리 및 정보서비스분야 직업 8종의 직무분석을 기초로 하여, 직무간의 관련도를 밝히고, 직무중복도를 밝혔다 이로서 직업 간의 직업이동 가능성을 제시하고, 직업분류를 통하여 직업변화 동향을 밝혔다. KJ기법에 의한 분석결과 5개의 대분류항목이 제시되었고, 항목간의 관련업무를 제시하였다.

• 지식경영연구
• /
• 제10권3호
• /
• pp.35-49
• /
• 2009

The purpose of this study is to examine whether suppliers are able to benefit by means of constructing a relationship-specific intangible asset and participating in collaboration with purchasers to actively maintain value created while mutually using inter-organizational information systems. To achieve the purpose of this study. 82 questionnaires have been analyzed from suppliers which are using electronic transactions through inter-organizational information systems. As a result, business process specificity and domain knowledge specificity, which are relationship-specific intangible assets, affect operational collaboration and strategic collaboration, which are classified by level of decision-making. Although both types of collaboration are needed to achieve both strategic and operational benefits, we find each collaboration to be uniquely promoted by a specific types of relationship-specific intangible asset. Operational collaboration is found to be an antecedent to operational benefit and strategic collaboration is found to be an antecedent to strategic benefits. No crossover between collaboration and supplier's benefits is found. Consequently, the result of this study shows collaboration is needed for domestic suppliers, which have relatively low levels of collaboration, to keep maintain relationship-specific intangible assets and to prevent the relationship termination cost when transactions have been stopped between supplier and purchaser. Also the results imply the supplier can have advantages by participating in collaboration.

• 한국항공운항학회지
• /
• 제9권1호
• /
• pp.5-13
• /
• 2001

There are many studies which reveal most of the accidents are related to pilot errors. Looking at each phase of flight, the accidents which occurred at the segments of take-off and landing consist of 70%, cause these phases need precise cooperations between pilots and ATC specialists to make sure every instructions understood and instruments to be normal. Therefore, the accidents of these phases leave great regrets and the price was enormous to people and equipments. Until now, most of the studies investigate the accident itself and very few show the relationships between pilots and air traffic controllers. This study analyzes the impacts of inter-dependence to mutual trust, cooperations and relationship efficiency between them who play important parts in flight. Based upon the findings, the inter-dependence has an effect on mutual trust and the latter influences to cooperations. Also, mutual trust and cooperations have a leading role in the relationship efficiency. It implies that mutual trust, cooperations, and the degree of inter-dependence are important factors to improve the relationships between them.

• 경영과학
• /
• 제15권2호
• /
• pp.109-124
• /
• 1998

Recently, as the importance placed on the design phase of system development has increased, the use of diagrams to design the overall system before implementing the actual program code has seen a proportionate increase. This study focuses on the diverse diagrams depicting organizational processes when integrating multiple processes of individual organizations to form an Inter-Organizational System(IOS). In this study, we attempt to identify the critical representation features of process diagrams that enable the effective integration of Inter-Organizational processes. In particular, the effect of the mapping relationship between the representation features of different diagrams to be integrated was tested empirically in a laboratory setting. The experimental task consisted of integrating the processes of two organization based upon the given process diagrams. Actual business processes were selected from real world cases and process diagrams were formulated based upon existing object-oriented notation. An analysis of the errors committed by the subjects during the integration process indicated that the mapping relationship between the diagram features representing the respective organizational processes had a significant impact upon the final integration outcome. Based upon these results, the present study provides a guideline for process diagrams that are crucial to effective Inter-Organizational process implementation and maintenance.

• Journal of Communications and Networks
• /
• 제3권4호
• /
• pp.342-350
• /
• 2001

The Internet routing instability, or the rapid fluctuation of network reachability information, is an important problem currently facing the Internet engineering community. High levels of network instability can lead to packet loss, increased network latency, and delayed routing convergence. At the extreme, high levels of routing instability can lead to the loss of internal connectivity in wide-area networks. In this paper, we investigate the variation of domain degree and domain count of the inter-domain network over time by using linear regression model in order to analyze the topology variation of inter-domain network. We Also propose an efficient policy management model to reduce the instability in the inter-domain routing system. The proposed model can be used to identify whether a routing policy is adequate to reduce convergence time that is required to return to a normal state when BGP routing instability happens. Experimental analysis shows that the proposed model can be used to set up routing policy in domains for the purpose of minimizing the effects and the propagation of BGP routing instability.

• Journal of Korea Trade
• /
• 제25권3호
• /
• pp.134-152
• /
• 2021

Purpose - Our study aimed to examine the roles of conflict management in maintaining a sustainable good relationship between joint venture (JV) partners. Although the concepts of relational capital, mutual commitment, and cultural adaptation have been neglected in previous research on interorganizational relationships, we treated them as inter-partner fit mechanism capabilities of affecting the level of satisfaction in a relationship with a JV partner. Design/methodology - In order to test hypotheses, we sent a questionnaire to Japanese firms operating JVs in South Korea and asked whether their levels of satisfaction with their JV partners increase when conflict management techniques are used to reduce the conflicts that usually arise between partners. Findings - The results of our study suggested that it is important for firms participating in a JV to construct and reinforce an inter-partner fit mechanism that enables them to maintain a favorable partnership. In addition, we suggested that relational capital, cultural adaptation, and mutual commitment influence conflict reduction and the level of satisfaction experienced in JVs. Moreover, the results showed that conflict management has a significant effect on developing soild partnerships and performance in JV situations. Originality/value - We advanced a new paradigm about conflict management and suggested methods of research propositions that are well grounded in the latest findings in conflict management research pertaining to JVs.

• 한국유통학회지:유통연구
• /
• 제17권3호
• /
• pp.59-92
• /
• 2012

본 연구는 최근 인사조직 분야에서 집중적인 조명을 받고 있는 윤리적 리더십을 유통경로 연구에 적용함으로써, 그 동안 그 중요성에 비해 덜 조명되었던 유통경로 내 조직 간 리더십에 대한 이해를 증진시키고자 한다. 특히, 본 연구는 비교적 최근 밝혀지기 시작한 윤리적 리더십의 선행변수에 초점을 맞춤으로 유통경로의 구성원 간 관계에서 윤리적 리더십이 형성되기 위해서는 어떻게 해야 하는 지를 규명하고자 한다. 이를 위해 본 연구는 조직의 성격특성과 관계유지전략이라는 두 가지 이론적 차원의 변수들과 실무자들과의 심층면접을 통해 중요하게 언급된 공급업체 관리활동 변수들을 실증하였다. 국내 6대 할인점에 상품을 공급하는 공급업체 295개 사의 납품 담당자를 대상으로 설문조사를 실시하였고, PLS(Partial Least Square) 구조모형 분석을 통해 분석한 결과, 대형 할인점의 조직특성 중 양심이, 관계유지 전략 중 개방전략, 갈등관리전략, 사회망전략이, 공급업체 관리활동 중 교육훈련과 공정한 보상이 대형 할인점의 윤리적 리더십을 강화하는 것으로 나타났다. 반면, 대형 할인점의 정서적 불안정은 윤리적 리더십을 약화시켰고, 친절성과 보장전략, 조직간 커뮤니케이션은 윤리적 리더십에 유의적인 영향을 미치지 않았다.