• The KIPS Transactions:PartB
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• v.10B no.1
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• pp.87-94
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• 2003

A study on the characteristics of server workloads based on user access pattern offers insights for the strategies on continuous media caching and network workloads distribution. This paper analyses characteristics of continuous media filet in each fervor and user access requests to each of them, using log data of three commercial sites, which are providing continuous media files in the form of real time streaming on the Internet. These servers have more continuous files than ones in the previously reported studies and are processing very large number of user access requests. We analyse the characteristics of continuous media files in each server by the size of files. playback time and encoding bandwidth. We also analyse the characteristics of user access requests by the distribution of user requests to continuous media files, user access time, access rate based on the popularity of the files and the number if access requests to serial continuous media files.

• Journal of Korean Library and Information Science Society
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• v.52 no.1
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• pp.179-202
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• 2021

This study was started on the premise that it was necessary to analyze the users and their needs of the national bibliography in order to develop a new national bibliographic service strategy. Based on this premise, the main purpose of this study is to analyze the users' situation and needs on the Korean national bibliography, and to establish a new service strategy that reflects the user's perspective. In addition, it has a secondary purpose to find the basis for justifying the value and persistence of the national bibliography from user. To this end, first, identified the main user groups of national bibliography through literature and case studies. The data were collected from a interview with 51 people from 4 groups (librarian, researcher, publishing distributor, end user) that are expected to use national bibliography. As a result of the interview, it was possible to confirm very low awareness and utilization of the national bibliography. In addition, the interview results revealed that there is a need for improvement in terms of the method of operating the national bibliography, the content to be provided, and service.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.46 no.3
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• pp.109-122
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• 2023

As platforms become primary decision making tools, platforms for decision have been introduced to improve quality of decision results. Because, decision platforms applied augmented decision-making process which uses experiences and feedback of users. This process creates a variety of alternatives tailored for users' abilities and characteristics. However, platform users choose alternatives before considering significant quality factors based on securing decision quality. In real world, platform managers use an algorithm that distorts appropriate alternatives for their commercial benefits. For improving quality of decision-making, preceding researches approach trying to increase rational decision -making ability based on experiences and feedback. In order to overcome bounded rationality, users interact with the machine to approach the optional situation. Differentiated from previous studies, our study focused more on characteristics of users while they use decision platforms. This study investigated the impact of quality factors on decision-making using platforms, the dimensions of systematic factors and user characteristics. Systematic factors such as platform reliability, data quality, and user characteristics such as user abilities and biases were selected, and measuring variables which trust, satisfaction, and loyalty of decision platforms were selected. Based on these quality factors, a structural equation research model was created. A survey was conducted with 391 participants using a 7-point Likert scale. The hypothesis that quality factors affect trust was proved to be valid through path analysis of the structural equation model. The key findings indicate that platform reliability, data quality, user abilities, and biases affect the trust, satisfaction and loyalty. Among the quality factors, group bias of users affects significantly trust of decision platforms. We suggest that quality factors of decision platform consist of experience-based and feedback-based decision-making with the platform's network effect. Through this study, the theories of decision-making are empirically tested and the academic scope of platform-based decision-making has been further developed.

• Proceedings of the Korea Society of Design Studies Conference
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• 2004.10a
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• pp.186-187
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• 2004

• Proceedings of the Korea Society of Design Studies Conference
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• 2004.10a
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• pp.232-233
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• 2004

• Proceedings of the Korea Society of Design Studies Conference
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• 2004.10a
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• pp.94-95
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• 2004

• Proceedings of the Korea Society of Design Studies Conference
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• 2004.10a
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• pp.132-133
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• 2004

• Proceedings of the Korea Society of Design Studies Conference
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• 1999.05a
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• pp.86-87
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• 1999

최근 유니버살디자인(UNIVERSAL DESIGN)에 대한 관심이 증가하고 있는 가운데 인간 각각의 다양한 연령의 차이로 인한 신체적 특성의 고려는 다양한 디자인의 연구와 적용으로 많은 성과를 가져오고 있다.(중략)

• Proceedings of the Korea Society of Design Studies Conference
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• 2000.11a
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• pp.10-11
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• 2000

사용자 인터페이스가 최근 디자인 분야에서 중요한 역할을 수행하고 있다. 그리고 이러한 인터페이스를 설계하기 프로세스 및 방법들도 날로 세련되어지고 또한 새롭게 개발되고 있다. 그러나 인터페이스를 개발하기 위한 체계는 주변의 유관 영역에서 적절한 방법 및 프로세스를 도입하여 이제 막 그 체계를 정립해 나아가고 있는 단계라고 할 수 있다. (중략)

• Proceedings of the Korea Society of Design Studies Conference
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• 2000.11a
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• pp.12-13
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• 2000

우리의 주변에는 사용자가 움직이는 도구나 기계는 많아도 도구 스스로가 움직이는 그리 많은 편이 아니다. 또한 움직이는 도구라 하더라도 안전을 위하여 가동부를 감추거나 가동부를 직접 볼 수 있는 경우는 드물다. (중략)