• KIEAE Journal
• /
• v.16 no.4
• /
• pp.63-69
• /
• 2016

Purpose: This preliminary study investigated a potential of the water wall systems that provide heat storage and natural lighting control simultaneously. Method: In order for transparency of the water wall to be controlled, the study first proposed two measures: to adjust transparency of the water wall; to control transparency of water wall surface. The performance of two measures then was verified and compared by experiments. In addition, a trade-off between heat collect and heat storage resulting from using additive for adjusting transparency was investigated. Result: The experiment showed that the two measures are similar in performance. The investigation of trade-off relation showed the additive should have the same heat storage as the water to prevent decrease in thermal performance of the water wall. As an economical measure to control transparency of the water wall, this study suggested a measure of secondary heat transfer systems using shading device that first absorbs solar radiation and then transfers heat to the water wall. The experiment show that performance of the proposed measure is similar to controlling transparency of water wall surface. In conclusion, it is expected that the performance of the water wall can be economically maximized by using the proposed mean in terms of heating, cooling and lighting energy saving.

• Korea Trade Review
• /
• v.48 no.1
• /
• pp.83-126
• /
• 2023

The revenue histogram of venture businesses is shifting from bell-shaped normal distribution to power-law distribution, which implies that the fitness landscape of the venture businesses ecosystem is changing to be more rugged terrain. We argue that the firm should adopt both exploitation (fast follower) and exploration (or first mover) strategies not to get stuck in local maxima in the rugged fitness landscape from the complex system perspective. By designing and performing agent-based modeling simulation experiments which consist of three types of agents (new technologies, entrepreneurs, and consumers), we demonstrated that the ambidexterity strategy showed the highest performance score in three of four different environment except 'Fast Widening' case where the exploitation strategy showed the highest performance score under low technology appropriation and fast disruptive technology development speed. By investigating the financial and other statistics of 617 top venture businesses who have earned 100B won or higher annual revenue, we concluded that 82% and 9% of firms are bent on the exploitation and exploration strategy.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.36 no.12C
• /
• pp.764-773
• /
• 2011

Despite enormous performance gain with multi-antenna transmission in the single cell environment, its gain diminishes out in the multi-cell environment due to interference. It is also very hard to solve the efficient downlink beamforming with low complexity in multi-cell environment. First, this paper shows that the asymptotically sum rate optimal downlink beamformings at low and high SNR are maximum ratio transmit (MRT) and zero forcing (ZF) beamforming in the multi-cell system, respectively. Secondly, exploiting the asymptotically optimal downlink beamforming, we develop simple two types of near optimal downlink beamforming schemes having the form of minimum mean squared error (MMSE) beamforming obtained from the dual uplink problem. For each type, three different subclasses are also considered depending on the computational complexity. The simulation results show that the proposed near optimum algorithms provide the trade-off between the complexity and the performance.

• Ocean and Polar Research
• /
• v.33 no.3
• /
• pp.223-233
• /
• 2011

The Korean government has acknowledged the importance of Dokdo Island and has consequently taken various measures for the effective management of it. There has, however, been little quantitative information about the value of Dokdo Island and this study, therefore, attempts to assess the Islands non-market value. To this end, this study estimated the non-market value by MAUT/CVM. The non-market value estimated by MAUT/CVM includes historic value, military value, ecological value, and geological value. According to the results, the values calculated by the price in market is about 10.37 trillion won and the values estimated by MAUT/CVM is about 1.72 trillion won annually.

• International Commerce and Information Review
• /
• v.8 no.4
• /
• pp.301-322
• /
• 2006

The change of the global environment, especially the development of the communication and transportation and the decrease of the trade barrier promotes the progress of globalization. Under this background, the globalization progress of Chinese electronic firms is also pushed forward, compared with the early firms, which is being quickly shortened. This study has some purposes. First, this tries to investigate the growth process of the Chinese electronics firms, by which reveals the progress of the global competition ability and the background of promoting their rapid globalization. Second, this study estimates and analyzes the implemented process of Haier's globalization strategy, which is the Chinese most representative global Firm. Finally, this article elaborates the globalization of Chinese firms and the apocalypse of the Korean firms and also shows the corresponding projects for them.

• Asian Journal of Business Environment
• /
• v.4 no.2
• /
• pp.23-29
• /
• 2014

Purpose - This study aims to find ways to create win-win market strategies for department stores, vendors, and customers by studying the operation of the Teukyakmeip system-the distinctive trade system of Korean department stores-and preceding cases. Research design, data, and methodology - We simultaneously examined various materials, analyzed preceding research, and interviewed department store managers (the parties to the Teukyakmeip transaction). Results - We examined whether the Teukyakmeip transactions are really beneficial to department stores, but unfavorable to vendors. Significant results emerge including figures and tables. Conclusions - Department stores will implement and develop the system to advance the win-win partnership by minimizing errors and drawbacks from the system.

• International Commerce and Information Review
• /
• v.10 no.4
• /
• pp.553-577
• /
• 2008

Various export supporting systems of Korean government have affected Korean economy to be 13th in the world and over US$ seven hundred trillion in terms of the volume. Especially, export insurance system use to cover the commercial risks of Korean exporter. That is why Korean exporter have been able to do their best in exporting and expand overseas market actively. On the other hand, China who use to drive strong export expansion policy after joining WTO, have also very focused on export insurance system and developed its applicable items. From the point of view above, It is very meaningful study to compare the export insurance system between Korea and China. It is suggested that government funds for export insurance should be raised to give exporters more benefits. New kinds of export insurance items, also, should be developed to actively face international trade environment change.

• Proceedings of the Korean Information Science Society Conference
• /
• 2004.04a
• /
• pp.274-276
• /
• 2004

기존의 컴퓨팅환경에서 유비쿼터스 컴퓨팅 환경으로의 전환이 이루어지면서 사용자는 언제 어디서나 네트워크에 연결될 수 있다. 이는 역으로 말하면 언제 어디서나 사용자의 정보가 네트워크에 유출될 수도 있다는 것을 의미한다. 컴퓨팅 환경에서 보안성과 편리성의 추구는 서로 상반되는 Trade-off 문제이다. 이 논문에서는 오토노믹 컴퓨팅(Autonomic Computing)의 개념 [1, 2］을 이용, 정해진 개인정보 보호정책(Privacy Policy)에 기반 하여 개인정보를 보호하고 서비스 사용자의 환경 변화에 대안 상황인지(Situation-Aware)를 통해 유연한 개인정보 보호정책을 적용할 수 있는 아키텍쳐를 제안함으로서 보안성(개인정보보호)과 편리성(사용자 개입의 최소화)의 문제를 다루어보았다.

• Human Ecology Research
• /
• v.55 no.6
• /
• pp.675-687
• /
• 2017

This study is to apply a goal-directed model for ethical consumption behavior and to see which factors influence consumers' boycott intention. We identify factors related to a goal-directed model for consumers, level of ethical consumption tendency, and boycott desire; in addition, factors that affect boycott intentions were also analyzed. The results of this study are as follows. First, consumers' boycott intentions are not high and public intention motivation is relatively low. Second, negative anticipated emotion shows an indirect effect with boycott desire as a mediator. Third, ethical consumption tendency has a significant effect on boycott desire and boycott intention. Therefore, we have to let consumers know that boycott actually shows a consumer's right and that it is also necessary to conduct various ethical consumption education.

• Journal of Distribution Science
• /
• v.19 no.4
• /
• pp.15-24
• /
• 2021

Purpose: This study deals with the strategic direction of platform business in the 4th Industrial Revolution. In a changing industrial environment, companies that leverage platform businesses can benefit greatly. Platform business is especially important in the distribution industry, so a variety of case analysis studies are needed. In this study, the Shinsegae Group, a platform leader, was selected and case-analyzed to learn more about the growth and development of platform businesses in the distribution industry. Research design, data and Methodology: Various literature research on platform business and secondary data of the distribution industry were reviewed. In this study, additionally, the interview method was used to discuss the development of more platform businesses through the Shinsegae and E-mart related departments. Results: This study investigated the development process and success of distribution platforms. First, a successful platform business builds multi distribution channels. Second, a successful distribution platform business attracts many participants. Third, a successful distribution develops various private label products to build a sustainable platform system. Conclusions and Implications: This study could provide a good example for the growth of companies with distribution platform business. Further implications were discussed.