• 디지털콘텐츠학회 논문지
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• 제18권2호
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• pp.411-422
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• 2017

현재 정책은 대역폭 공유에 대하여 평균 처리량을 높이고 로컬 네트워크의 대역폭 사용률을 향상시킨다. 하지만 이러한 정책은 각각 네트워크 흐름에 대역폭을 할당해주는 중앙 관리에서 사용자 특성 기반의 리소스를 할당 할 수 없다. 따라서 사용자 특성기반의 서비스를 보장하지 않기 때문에 불평등한 대역폭 할당이 발생된다. 따라서 본 논문에서는 제한된 대역폭 네트워크에서 대역폭을 공유하는 새로운 방법을 제안한다. 제안한 방법은 이상적인 퍼지 시스템을 사용하여 제한된 장치의 현재 사용량에 따른 대역폭 요청여부를 추전하고 결정한다. 본 논문에서는 OPNET의 비디오 스트리밍 시뮬레이션과 WebRTC의 실시간 비디오 스트리밍으로 구성된 두 가지 실행을 수행한다. 수행한 실험 결과를 통해 제안 된 방법이 네트워크 환경에서 사용자의 요구사항을 기반으로 대역폭 사용을 유연하게 공유 할 수 있다는 것을 확인 할 수 있었다.

• Journal of Ship and Ocean Technology
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• 제11권2호
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• pp.34-45
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• 2007

Environment of marine transportation market is changing rapidly. Due to globalization of world economy, marine transportation of cargos, especially trade using container boxes, is increasing dramatically. Fierce competition in the global market of container transportation forces the shipping industry to seek the economy of scale to reduce transportation cost, and drives the merge and alliance of liner shipping companies. Mega-sized container ships, having capacity over 10,000 TEU, were introduced, and appeared recently, in order to reduce the unit transportation cost. Korean shipping and shipbuilding companies are competitive, and have considerable market share in the global market. Even though both industries are inter-connected through ships and have many common interests in order to enlarge the global market share, inter-relation between two industries is surprisingly insignificant. In this paper current issues in the process of environmental change of marine cargo transportation are reviewed, and inter-relation of shipping and shipbuilding industries is discussed. Suggestions for inter-related development of Korean shipping and shipbuilding industries are given, and means for mutually beneficial collaboration are suggested.

• 대한가정학회지
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• 제42권2호
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• pp.117-131
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• 2004

The purpose of this study was to examine the current situation of B2B fashion buying behavior (i.e., buying motives, product characteristics, buying processes), and to analyze the buying performance, buying problems and buying strategies. In depth, face-to-face interviews with structured questionnaire were conducted with three buyers and three vendors related to 18 buying items of C Company. Results of this research were as following:1. Buying motives were mainly reduction of buying costs, improvement of profits, and increased efficiency in buying process for retail buyers, while the selling motive was mainly improvement of market share for suppliers. Suitable items for B2B buying were basic items or bulk items. The B2B buying process included the following steps: selecting auction items, target prices, and suppliers ; setting the product specification and bidding niles; training the suppliers for preparing the auction; proceeding the auction by internet. 2. The perceived B2B benefits for buyers were profit improvement and cost reduction while those for suppliers were time saving and market share improvement. The indicated buying problems were as poor product quality, low product image, and difficulty in partnership. For B2B buying strategies, a quality management system, various auction tactics based on items, and a supplier management system were recommended.

• 경영과학
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• 제34권1호
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• pp.15-25
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• 2017

We evaluated industry growth and employment effects of every possible pairs of 22 manufacturing sectors and 16 regions (i.e, 352 region-sectors). We used annual data of manufacturing sectors from 2008 to 2014 for the evaluation. The evaluation comprises of two steps; We first find several region-sectors that outperform others with respect to the effects of industry growth and employment, which are measured by location quotient analysis, shift share method, employment to GDP ratio and employment elasticity. In addition, cross-efficiency analysis follows to classify region-sector pairs into two sub-categories : efficient region-sectors that deserve to hold the current level of investments and inefficient region-sectors where we should consider efficiency improvements. To examine the efficiency, R&D investment, employment size, and capital investment were used as input factors and production volume, added value, changes in employment size, changes in annual salary per capita were used as output factors. For region-sector pairs that have outstanding growth and employment effects but are inefficient, we employed a CCR DEA model and analyzed how much to adjust the values of input and output factors to improve the efficiency scores. The analysis results showed that inefficiency is mainly due to several factors such as R&D investment, changes in employment size and changes in annual salary per capita.

• 한국콘텐츠학회논문지
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• 제11권12호
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• pp.543-551
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• 2011

최근 다양한 휴대용 멀티미디어 기기가 많아지면서 사용자는 하나의 미디어 콘텐츠를 자신이 보유한 여러 기기에서 공유하고자 하는 욕구가 늘어나고 있다. 이러한 욕구는 N-스크린 서비스의 발전으로 이어지고 있는데, 현재 N-스크린 서비스를 위한 미디어 동기화 방식은 하나의 기기에서 재생중인 콘텐츠를 중지하고 새로운 기기로 전송하여 재생하는 형태로 이루어지고 있다. 본 논문에서 제안하는 기술은 다중 기기에서의 콘텐츠 동기화를 위해 하나의 기기에서 재생중인 미디어 콘텐츠의 URI 및 현재 재생 시점을 얻어온다. 얻어온 정보는 현재 재생 중인 기기와 새롭게 재생시킬 기기에 동시에 전송하여 여러 사람이 집 안 다른 공간에 있더라도 같은 미디어 콘텐츠를 다중 기기에서 재생할 수 있도록 한다. 동기화 기술은 UPnP를 기반으로 하는 DLNA 기술을 이용하였고 무선 홈 네트워크 시스템을 구축하여 테스트하였다.

• 유통과학연구
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• 제17권7호
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• pp.55-63
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• 2019

Purpose - This paper examines the value relevance of socially responsible activities in the Korean retail firms. Recent studies predict positive relationships between socially responsible activities and the value of corporation. Research design, data, and methodology - We use the environmental score, social score, governance score and the sum of these three scores to represent a fim's effectiveness of socially responsible activities. These scores are published by the Korean Corporate Governance Service. This paper adopts a share price valuation model to evaluate the effect of socially responsible activities on a firm's share price, which controls for the book value of assets and current earnings. The ordinary least square method is employed to examine the relationship. The sample of Korea retail firms is examined from 2011 to 2016. We also conduct sub-sample analysis based on the categorization of chaebol affiliates and non-chaebol affiliates. Results - The entire sample analysis finds neither negatively nor positively significant relationship between socially responsible activities and the value of a corporation. In contrast, our examinations find a significantly positive valuation effect of social score within non-chaebol retail firms. Conclusions - The results weakly support the positive valuation effect of socially responsible activities. The results are consistent with recent studies that highlight heterogeneous effects of socially responsible activities on corporate policies and valuation.

• 한국주거학회논문집
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• 제26권1호
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• pp.139-150
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• 2015

The number of 1 or 2 households is rapidly increasing due to the participants of women in the working society, the increment of unmarried men, and the change in family structure. The current housing market and the housing administration focuses more on the bigger number of households so that single person households are being neglected. As more individuals move to the capital, living in the city for a single person household has become very difficult. Sharing has become an important aspect among the society and shared housings have hit the minds of single person households as a new way of living. Comprehensive properties, boarding houses, housings for studying (Go-Si-Won), and officetels match the ideas of shared housings. The absent of clear standards on private rooms and shared facilities is making the living very challenging. This study aim to understand foreign (England, Australia, and Japan) institutional characteristics for shared housings to build foundations in order to bring in shared housings into Korea. The residential concept can not be applied to shared housings in Korea directly since the idea of living is different for each nation and its cultural distinctions. However, a clear classification and standards on shared housings depending on the size of the house and number of residents are needed alongside with an index of principles and residential criteria.

• 지식경영연구
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• 제2권1호
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• pp.25-44
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• 2001

There are two types of organizational knowledge in terms of its creation process: experiential and analytical knowledge. The experiential knowledge is created by repetitive experiences of an individual or team through task execution, while the analytical knowledge is acquired by analyzing accumulated data or information in the organization. The experiential knowledge often remains tacit or implicit in the organization because it is primarily acquired at an individual or team level. Therefore, the issue on the experiential knowledge is to share it actively within the organization. On the other hand, the analytical knowledge is explicit in its nature since it is extracted from data or information. Thus, it is important to guide a systematic creation of the analytical knowledge rather than encourage to share it. The current trend of "knowledge management" mainly focuses on the experiential knowledge - know-how, idea, case, etc - and neglects another important knowledge in the organization. i. e., analytical knowledge. This paper tries to shed a new light on the "knowledge management" arena by introducing rather new perspective in the concept of knowledge. The purpose of this study is to identify the factors affecting the analytical knowledge creation in the organization. We conducted an exploratory case study of three companies with a previously defined research framework and found some critical factors for the analytical knowledge creation. They are "organizational resource", "effectiveness of feedback process", "data source management", and "experimental mind set". Finally, we proposed research model and propositions regarding the analytical knowledge creation in the organization.

• 연구윤리
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• 제1권2호
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• pp.15-20
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• 2020

Purpose: The purpose of this paper is to examine the ethical considerations that must be addressed in journals and discern the strategies that will elevate the quality of the journals. Research design, data, and methodology: This study utilized the past studies that were conducted in this field. Examples of journals were used to mark some of the key features of reputable journals, as well as the guidelines for KODISA. Results: This study has showed the importance of ethical considerations in journals for the best interests of the scholars and journal community as a whole. A clear set of outlines makes the journal a place for scholars to share their knowledge, as well as elevate the journal into a good standing in the academic world. Some of the key strategies in improving KODISA include inviting notable members of a field to share their knowledge and encouraging more scholars to contribute to this network. Conclusion: KODISA has a strong set of ethical considerations for the scholars that publish in their journals and will continue to improve its quality for the future. It includes improving its strategies and keeping up to date with the trends in the current field of discipline.

• Journal of Information Technology Applications and Management
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• 제20권3호
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• pp.79-92
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• 2013

Word-of-mouths (WOMs) are now an important information source for purchase decision. Due to the advance in internet technology, people now can share online their consumption experience, both positive and negative, to others. The WOMs may diffuse to not only their friends but also enormous online users. When consumers dissatisfy the product or service, they may share the dissatisfactory experience to others as WOM, which may bring out discussions for the product or service. The discussions on the negative WOM may help to communicate the negative information to enormous others, which may damage the sale of the product or service. The diffusion and life cycle of negative WOM is an important issue for managers. However, few studies focus on it. Thus, the current study focuses on the discussion pattern and life cycle of negative WOMs by observing the 782 discussion articles in a large online community.