• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권5호
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• pp.1912-1931
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• 2018

In future wireless network, user experience and energy efficiency will play more and more important roles in the communication systems compared to their roles at present. Quality of experience (QoE) and Energy Efficiency (EE) become the widely used metrics. In this paper, we study a combinatorial problem of QoE and EE and investigate a fair power allocation in heterogeneous networks. We first design a new metric, QoE-aware EE (QEE) to reflect the relationship of QoE and energy. Then, the concept of Utopia QEE is introduced, which is defined as the achievable maximum QEE in ideal conditions, for each user. Finally, we transform the power allocation process to an optimization of ratio of QEE and Utopia QEE and use invasive weed optimization (IWO) algorithm to solve the optimization problem. Numerical simulation results indicate that the proposed algorithm can get converged and efficiently improve the system energy efficiency and the QoE for each user.

• 정보처리학회논문지D
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• 제9D권4호
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• pp.651-658
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• 2002

본 논문에서는 명세를 기반으로 한 통합 테스트를 수행할 때 사용되는 시나리오 작성지원 절차를 제시하고, 시나리오 작성지원 도구를 구현하였다. 이를 위해 기본적으로 요구사항 정의테이블, 프로세스 정의테이블, 프로그램 대 테이블 상관도를 사용한다. 추가로 앞의 3가지 테이블 기능을 요구분석, 설계, 테스트 단계별로 나누어 한곳에서 신속·정확하게 체크할 수 있는 요구사항 추적테이블을 생성한다. 본 연구의 통합 테스트를 위한 시나리오 작성지원 도구의 출력물은 시나리오 작성을 위한 지침서 역할을 한다. 그 결과 검사팀의 시나리오 작성노력을 상당부분 줄일 수 있을 뿐만 아니라 요구사항의 누락을 방지하고, 해당 프로세스에 대한 테이블 정보를 알 수 있으므로 테스트할 때 잘못된 값을 입력하는 것도 방지할 수 있다.

• 산업공학
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• 제21권1호
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• pp.43-50
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• 2008

Understanding consumers' latent desires for product form has now become a critical issue in product design. Accordingly, product development processes is rapidly changing from product-oriented development to user-centered development. Driver visibility is considered as an important element of driving posture packaging in automobile interior design. This study presents a systematic process for driver visibility analysis approached from affective engineering method that provides design variable selection and screening with respect to the image/impression element of the human visibility. Also, the analysis of front visibility, often called the feeling of "openness", in motor vehicle interior design, is selected and practiced a case study using the systematic process proposed in this study. Twenty six participants evaluated the feeling of openness for thirty motor vehicles following the perceived scale of affective design factors. The results showed that variables such as the height of head lining, the height of cluster housing, the gradient of windshield and the volume of A-pillar were the critical design variables which affect the feeling of openness in a motor vehicle.

• 한국실내디자인학회논문집
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• 제20권5호
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• pp.160-169
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• 2011

In Korea, the construction company has provided houses through apartment sales system. Residents have obtained a variety of information about their future house by visiting a sample house called "the model house" before they purchase home. Advanced technology such as web-based VOD or Virtual Model in recent years has gradually replaced those built environment. In 2009, the Ministry of Land, Transport and Maritime Affairs announced the restraint to the construction of sample houses. Instead, they highly recommended a Virtual Model House as an alternative solution. This study aimed to propose how to design the user-oriented virtual model house through the experiment and survey research. The 3D virtual model house of 85m$^2$ apartment was built and presented by two types (Type A: Bird's Eye View, Type B: Walk through View) on the web page. The subjects evaluated presence, spatial perception and cognition, and usability of each type after exploring them. The results are as follows. (1) The subjects' evaluation of presence showed Type B has more negative effects than Type A such as feeling dizzy or tired even if their values were not so high. (2) The subjects perceived and cognized both types of virtual model house more realistic for the expression of volume of space, the size of opening, and the arrangement of furniture than that of wall finishes and materials. (3) The usability of Type A was significantly higher than that of Type B.

• 한국CDE학회논문집
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• 제9권1호
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• pp.77-91
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• 2004

Integrating computer-aided design with computer-aided fabrication and construction will fundamentally redefine the relationship between design and construction. Rapid prototyping(RP) is evaluated as one of the integration method available but it has been regarded as very expensive and complex design evaluation tool and is only suitable for large mechanical design shops in automobile and aerospace industry. However current status of rapid prototyping is changing since the new generation of RP equipment, less expensive and more user-friendlier, now can be installed and use in design firms. Simultaneously increasing use of 3D CAAD software is also helping to use rapid prototyping widely. It is crucial to acknowledge rapid prototyping technologies are not only for avant-garde architect such as Frank O. Gehry but ordinary 90% architects, who can have benefit from fast and cost-effective technology. With its fast development and adaptation in architectural industry, it is quite necessary to include rapid prototyping education in regular CAAD courses either undergraduate or graduate level.

• 한국가정과학회지
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• 제7권1호
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• pp.69-80
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• 2004

The purpose of this study is to suggest methods for the community design through users' behavior study in apartment housing. This study was approached by using both theoretical investigation and empirical research. The theoretical investigation actualized the concept of community design in apartment housing through a literature survey. The empirical survey focused on seeking out a user-oriented design criteria based on the analysis of residents' usage behavior and mental map. The results of this study are as follow: First. regarding the analysis of the residents' attitude toward the share community space(SCS), it was found that the SCS made a sense as community facilities in apartment housing. Second, regarding the SCS through the metal map, it was shown that the sketch map analysis was a useful research method for the community design by actualizing the residents' behavior characteristics. Third. as to the results of analyzing the metal map, it was found that the considered characteristics in recognition of the SCS were related to the liking with the main paths, cross nodes of the moving line, the location of center. and the complexity. In conclusion, the SCS is the main of community design in apartment housing and the above characteristics in recognition are useful as the guidelines in the SCS planning.

• 한국CDE학회논문집
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• 제13권4호
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• pp.265-272
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• 2008

The flow of technology is going to human-oriented direction, from the time when the computer was first invented, to now where new computing environment using mobile and global network are everywhere. On that technology flow, ubiquitous is being suggested as new paradigm of computing environment. Augmented Reality is one of ubiquitous technologies that provide the interactions between human and computer. By adding computer-generated information to real information and their interaction, user can get the improved and more knowledgeable information about real world. The purpose of this paper is to show the possibility of applying vision based augmented reality to maintenance of product system.

• 한국실내디자인학회논문집
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• 제21권1호
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• pp.170-176
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• 2012

Korean living culture raised the users' needs for sub-kitchen. In the traditional Korean house, there was large space related to kitchen area for preparing food and stock big and bulky housing stuffs. As apartment housing became dominant as Korean dwelling, sub-kitchen has been planed in the balcony that is not included in the sales area. In this study, the case of the apartment housing in Esiapolis, Daegu was analyzed. To plan the user-oriented sub-kitchen, the consumer research was carried out. Consumers needed a pantry, more storage near the kitchen, and wanted to place washing machine and washing stand in a sub-kitchen. Sub-kitchens were planed to meet those consumers' needs. Through this case study and former studies analysis, sub-kitchen's function unit was derived: wash, storage, auxiliary work. By combining each function unit, sub-kitchen was classified into 3 types, wash & auxiliary work, wash & storage, and wash & storage & auxiliary work. For each sub-kitchen type, components of function units, available layouts, and minimum size were recommended.

• 한국컴퓨터산업학회논문지
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• 제9권4호
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• pp.177-182
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• 2008

컴퓨터의 발달과 정보통신의 확대로 인하여 사회 각 분야에 대한 변화와 함께 교육환경에도 많은 변화가 이루어지고 있다. 본 논문에서는 사용자의 변화 요인을 점검하여 학습의 진행에 효율적으로 참여할 수 있는 학습체계를 개발하고자 한다. 본 논문에서 제시하는 교육시스템은 관리자가 프로젝트의 주관자적인 입장에서 교육을 진행하고, 학습자는 사용자 중심의 비교 학습 및 패턴 설계의 장점을 극대화시켜 인터넷/인트라넷 상에서 실행되는 프로젝트 교육의 설계와 구현 방법에 관해 논한다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2002년도 추계학술발표논문집 (하)
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• pp.2059-2062
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• 2002

본 논문에서는 사용자 주도형의 웹 기반 원서접수 어플리케이션을 객체 지향 언어인 UML을 이용하여 설계 및 구현하였다. 즉, 개발 단계별 모델링 패턴을 정의하여 소프트웨어의 재사용 및 유지보수의 효율성을 감안하여 설계하였으며, 기존의 원서접수 어플리케이션과는 전혀 다른 사용자가 전적으로 참여하여 등록하고 접수하는 방식의 소프트웨어 응용기법을 제안하고 있다.