• Proceedings of the Speleological Society Conference
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• 2001.06a
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• pp.39-43
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• 2001

최근에는 국토관리의 차원이나 관광 등의 목적으로 동굴에 관한 관심이 많아졌다. 특히 동굴이 매장문화재로서의 의미를 갖기 시작하면서 더욱 그렇다. 따라서 지금은 어느 때보다도 동굴에 대한 이해가 필요할 뿐 아니라 동굴자체에 대한 체계적인 조사 연구가 필요한 때이다. 따라서 동굴형성에 관한 이론적인 뒷받침이 확실하게 정리된 다음에야 동굴자원을 효율적으로 활용할 수 있는 기반이 마련되리라고 생각한다.(중략)

• Knowledge Management Research
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• v.24 no.1
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• pp.147-172
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• 2023

This study aims to review the competitiveness of 'TVING', a Korean OTT player in Korean market. For this, this study extracts core business resources of TVING focusing on resource-based theory, and analyzes their competitiveness under VRIO framework. TVING has 4 tangible and intangible resources respectively and 1 human resource. Tangible resources of TVING are technology(recommendation, compression), content(original, exclusive, discriminative non-exclusive), production studio, and paid-subscribers. Intangible resources are content planing capability, distribution network(local, global), marketing promotion·PR, sales), brand preference. And human resource of TVING creates IP professionalism of the company. As a result of VRIO analysis, discriminative non-exclusive content, production studios, and domestic service channels are the most powerful resources of TVING to 'sustain competitive advantage'. Technology, original content, planning capability and IT professionalism bring 'temporary competitive advantage', while exclusive content, the number of paid-subscribers, global service network, and promotion capabilities are not core resources with staying in competitive rank stages. By the way, TVING has potential users for sales of KT and LGU+ thanks to partnership and M&A, but this is not effectively used at the organization level yet. The meaning of this study can be found in that this evaluated competitiveness by each resource of TVING and arranged its implications.

• Korean System Dynamics Review
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• v.15 no.4
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• pp.85-100
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• 2014

We propose a composite make or buy decision model considering both the transaction cost theory and the resource based view in the Korean defense industry using System Dynamics. We analyze relationship between core variables(transaction frequency, technological uncertainty, the level of technological dependency, technological level and acquisition ability for market information) and 'Make or Buy decision' focused on technological innovation capability. Based on the result, we propose the implications as follows : First, the defence industry needs more R&D investment. Second, it needs a balance between domestic(Make) and overseas(Buy) to increase the technological capability rapidly.

• Knowledge Management Research
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• v.4 no.2
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• pp.35-53
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• 2003

In recent years, knowledge has emerged as a major source of competitive advantage due to the continuous development of information and communication technology, the acceleration of globalization, and the entry into knowledge-based society. Thus interests in knowledge management have been increased significantly. Nevertheless theoretical backgrounds of knowledge management are not actively discussed. Studies on the knowledge management of R&D groups initiating knowledge creation and sharing are not actively conducted either. This study, therfore, provides a research model of knowledge management to investigate relationships among resource and institutional characteristics, knowledge management activities, and knowledge management performance of R&D groups based on knowledge-based theories and institutionalization theories. This study further offers research propositions inherent in the model.

• International Area Studies Review
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• v.14 no.2
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• pp.229-248
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• 2010

This study is intended to empirically investigate determinants of the degree of standardization vs. adaptation in global marketing programs for Korea firms. Our study has two main focuses. First, our study takes a global perspective instead of a binational, i. e., home vs. foreign perspective. Second, we accommodated two conflicting veiws - contingency and resource-based views in explaining determinants of global marketing strategy. As such determinants, we considered global market dynamism and complexity from a contingency view and global marketing assets from a resource-based view. Surveys were conducted with 128 Korean firms engaged in global marketing. Our study found that Korean firms with global assets tend to engage in highly standardized global marketing programs. On the other hand, global market dynamism and complexity did not show statistically significant relationships with the degree of standardization vs. adaptation. The findings suggest that a resource-based view may be more powerful than a contingency view in explaining global marketing strategies of Korean firms.

• Journal of KIISE:Computer Systems and Theory
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• v.26 no.1
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• pp.64-71
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• 1999

본 논문에서는 공중 광역 ATM망 환경에서 비연결형 서비스 제공에 사용되는 CLS에 적용될 수 있는 홉 카운터를 이용한 우선 순위 제어 알고리즘(Priority Control Algorithm using Hop-Count : HC-PC)의 망 자원 손실 비용을 분석하였다. 분석을 통해 우선 순위가 없을 경우 (No Priority Controls Algorithm: NO-Pc) 의 평균 셀 손실률이 HC-PC 의 평균 셀 손실률의 가중 평균보다 크거나 같은 경우 항상 NO-PC 이 평균 망 자원 손실 비용이 HC-PC 의 평균 망 자원 손실 비용에 비해 크다는 사실을 보였다. 시뮬레이션 결과는 분석에 의해 찾아진 조건이 만족됨을 보여주며 HC-PC가 NO-PC에 비해 어떠한 환경에서든지 항상 낮은 평균 망 자원 손실 비용을 가짐을 보여 준다.

• The KIPS Transactions:PartC
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• v.18C no.2
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• pp.97-102
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• 2011

Since the game theory provides a theoretical ground to distribute a shared resource between demanding users in a fair and efficient manner, it has been used for the bandwidth allocation problem in a network. However, the bandwidth allocation schemes with different game theory assign different amount of bandwidth in the same operational environments. However, only the mathematical framework is adopted when a bandwidth allocation scheme is devised without quantitatively comparing the results when they applied to the bandwidth allocation problem. Thus, in this paper, we compare the characteristics of the bandwidth allocation schemes using the bankrupt game theory and the bargaining game theory when they applied to the situation where nodes are competing for the bandwidth in a network. Based on the numerical results, we suggest the future research direction.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.11b
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• pp.872-875
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• 2003

본 연구에서는 자원에의 접근성 측면에서 성인 학습자들의 학습 효율성을 제고하기 위하여 학습자들의 교수-학습 방법, 학습속도, 학습능력, 학습여건 등 개인차가 다른 학습자들에게 다양한 학습선택권을 충분히 보장할 수 있는 e-learning 환경에 대한 고찰과 성인학습이론을 기반으로 성인학습자의 특성에 적합한 교수-학습 전략을 제안 하고자 한다.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.46 no.4
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• pp.56-63
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• 2009

Resource reservation scheme is effective for better QoS guarantee to handover call for the next generation cellular systems where handover rate highly increases. However, resource reservation for handover call can incur negative impact on the new user admission. In this paper, we propose a random access based adaptive group-wise reservation to effectively reduce dropping rate of handover call, while protecting new local call. In the proposed scheme, target base station divides adaptively future handover users into groups based on the expected handover time, and then does group-wise reservation, where service allocation within each group is done on random access basis. Markov approach is also provided to analyze the performance of the proposed scheme. By computer simulation, it is shown that theoretical analysis on the performance is similar to the simulation results and the proposed reservation scheme outperforms the conventional scheme with respect to dropping probability of handover call.

• Korean Journal of Remote Sensing
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• v.21 no.2
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• pp.145-162
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• 2005

To improve the accuracy of land-cover discrimination in SAB data classification, this paper presents a methodology that includes feature extraction and fusion steps with multi-temporal SAR data. Three features including average backscattering coefficient, temporal variability and coherence are extracted from multi-temporal SAR data by considering the temporal behaviors of backscattering characteristics of SAR sensors. Dempster-Shafer theory of evidence(D-S theory) and fuzzy logic are applied to effectively integrate those features. Especially, a feature-driven heuristic approach to mass function assignment in D-S theory is applied and various fuzzy combination operators are tested in fuzzy logic fusion. As experimental results on a multi-temporal Radarsat-1 data set, the features considered in this paper could provide complementary information and thus effectively discriminated water, paddy and urban areas. However, it was difficult to discriminate forest and dry fields. From an information fusion methodological point of view, the D-S theory and fuzzy combination operators except the fuzzy Max and Algebraic Sum operators showed similar land-cover accuracy statistics.