• Proceedings of the Korean Information Science Society Conference
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• 1999.10b
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• pp.151-153
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• 1999

한번의 질의로 사용자가 모든 요구를 표현하기 어렵고 만족시킬 수 없기 때문에 질의를 확장하는 연구가 계속되고 있다. 본 논문에서는 LSI(Latent Semantic Indexing)에서 사용자의 질의와 의미공간에서의 용어들간의 유사도를 구해 최상위의 용어들을 순서를 정해 질의확장을 하는 방법과 LCA(Local Context Analysis)을 이용하는 방법을 제안한다. 그리고 문서 집합에 대해 3가지 가중치를 적용한 결과를 분석하고 질의확장시의 문제점과 향후 연구과제에 대해 설명한다.

• Communications of the Korean Mathematical Society
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• v.25 no.2
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• pp.313-325
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• 2010

General models for the relaxed proximal point algorithm using the notion of relative maximal accretiveness (RMA) are developed, and then the convergence analysis for these models in the context of solving a general class of nonlinear inclusion problems differs significantly than that of Rockafellar (1976), where the local Lipschitz continuity at zero is adopted instead. Moreover, our approach not only generalizes convergence results to real Banach space settings, but also provides a suitable alternative to other problems arising from other related fields.

• Geomechanics and Engineering
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• v.32 no.2
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• pp.137-144
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• 2023

The current article studied wave propagation in a nonlocal porous thermoelastic half-space with temperature-dependent properties. The problem is solved in the context of the Green-Lindsay theory (G-L) and the Lord- Shulman theory (L-S) based on thermoelasticity with memory-dependent derivatives. The governing equations of the porous thermoelastic solid are solved using normal mode analysis with an eigenvalue approach. In order to illustrate the analytical developments, the numerical solution is carried out, and the effect of local parameter and temperature-dependent properties on the physical fields are presented graphically.

• Journal of Communications and Networks
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• v.7 no.2
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• pp.207-221
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• 2005

The proliferation of wireless local area networks (WLANs) offering high data rate in hot spot area have spurred the demand for possible WLANs and third-generation (3G) cellular network integration solutions as the initiative step towards 4G systems. This paper provides a novel architecture for seamless location-aware integration of WLANs into 3G cellular networks and also an analysis for the efficient handover techniques. We introduce location as a key context in secure roaming mechanism for context-aware interworking in 4G systems. The fast secure roaming with location-aware authentication is implemented at an entity called location-aware service (LAS) broker that utilizes the concepts of direction of user and pre-warming zone. The location-ware interworking architecture supports seamless roaming services among heterogeneous wireless networks including WLANs, wireless metropolitan area networks (WMANs), and 3G cellular networks. This paper also includes a description of procedures needed to implement efficient mobility and location management. We show how the LAS broker with pre-warming and context transfer can obtain significant lower latency in the vertical handover.

• School Mathematics
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• v.17 no.3
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• pp.493-513
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• 2015

This study is based on the perspective that tasks in local and global contexts are important to raise students' ability to mathematically analyze and solve diverse phenomena and social issues as members of future civil society. Therefore, this study analyzes 880 real world tasks from 13 types of 7th grade textbook based on 2009 revised Curriculum. As a result of analyzing tasks by using 3 types of context category and 9 types of ways as analysis framework and allowing repetitive coding, personal context was most frequent in the context of Younbokhap. In level of Integrated ways of Yungbokhap, sequential model in which other subjects' topics were not directly related to mathematics problem or presented in simple description is most frequent. The result shows that the textbooks are too limited to develop learner's competencies. Through such analysis result, we discuss about the necessity and methods of developing tasks which allow learners to study further in future society and global context and which connect other subjects' knowledge and social issue with mathematics in deeper level.

• Journal of Korea Society of Digital Industry and Information Management
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• v.6 no.3
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• pp.191-201
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• 2010

The Korean central government has been investing a lot of efforts to promote performance of local governments. For example, the Ministry of Public Administration and Security (MOPAS) supported the local governments to develop and provide with a 'balanced score card' and a 'customer satisfaction innovation. ' Many other central ministries also conducted individual evaluations for local governments in their substantive policy areas. These evaluation systems of 78 appraisals for local governments conducted by the MOPAS and other ministries had made the local governments to work harder. However, most local governments have appealed their 'reform fatigue' caused by the overlapping evaluation systems. In this context, the MOPAS initiated merging the evaluations into a co-evaluation system under the new Government Performance Evaluation Act of 2006. In this process of introduction of new evaluation system, there are two significant movements. Firstly, as Korean Government has strong information technology, MOPAS has developed 'Virtual Policy Studio (VPS)' which evaluates the performance of each local government with on line. In other words, in the co-evaluation system for local government performance most evaluation steps are implemented by computer and Internet. So most stakeholder can access and work on the VPS in real time when they want to. And the other thing is that cooperation among stakeholders has been occurred in the co-evaluation system. Furthurmore the cooperative governance is systemized and sustain for a long time because MOPAS made IT based co-evaluation system. Therefore this paper intends to illustrate the process of introduction of VPS, main process of co-evaluation system based on VPS and analyze collaborative governance of the co-evaluation system.

• Journal of the Korean association of regional geographers
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• v.12 no.1
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• pp.108-123
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• 2006

This study attempts to analysis the roles of national laboratories in the context of regional innovation systems and the contribution to local economic development in the case of Taedok Science Park in Korea. It also tries comparative studies between Taedok Science Park and some European experiences. Recently the role of national laboratories as key innovation agents for regional development strategies is emphasized in European countries. In the similar context, national laboratories have explicit missions to assist in the formations of new firms and to support existing small and medium-sized enterprises in their localities. It is found that these functions are largely present and become more important in Taedok, but that the linkages between national laboratories and local firms are still weaker than some European countries. This study concludes that national laboratories in Korea should reinforce the industry-research linkages with local economic activities in the region to stimulate cooperation activities.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.31 no.6D
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• pp.819-828
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• 2011

Due to emergence of large discount mart and on-line shopping, and the resulting shrinkage of market share, traditional market that is typically having operational disadvantages is facing a predicament. However, considering the total sales volume and the consumer traffic, it is true that traditional market still plays an important role. In this context, traditional market should be vitalized through an improved management system as well as restructuring, and seek a balanced growth in the distribution industry. In order to provide competitiveness to the local traditional market of Jeung-Pyung Province and to vitalize the local economy, an analysis was preformed for the local market environment, and the vitalization plans, which can be referenced in determining the local economic policies, are suggested in this paper.

• Proceedings of the KSR Conference
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• 2001.10a
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• pp.104-110
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• 2001

During the last several years, the high speed railway system has been constructed and it is scheduled to open sometime in 2004. To fulfil its duties, it is essential to view intermodalism in the context of broader technological developments in easy access to high speed railway station. And also, to understand the economic importance of intermodal transportation, continual research is needed on the costs and distributional effects of alternative intermodal mechanisms for public works, including direct service to local station or easy transfer to other mass transportation modes. In this paper, necessary courses for local governments involvement are taken, and additional resources must be found that will benefit the entire railway system.

• Journal of the Korean Statistical Society
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• v.33 no.4
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• pp.367-379
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• 2004

This article deals with the nonparametric analysis of longitudinal data when there exist possible correlations among repeated measurements for a given subject. We consider a quasi-likelihood regression model where a transformation of the regression function through a link function is linear in time-varying coefficients. We investigate the local polynomial approach to estimate the time-varying coefficients, and derive the asymptotic distribution of the estimators in this quasi-likelihood context. A real data set is analyzed as an illustrative example.