• 전자공학회논문지CI
• /
• 제45권5호
• /
• pp.74-84
• /
• 2008

지역적으로 분산되어 있는 지식 노동자들 간에 진보된 협업을 지원하기 위해서, 유비쿼터스 컴퓨팅의 범위 내에서 많은 연구가 진행되어 왔다. 특히 전통적인 회의실 기반의 협업 환경 (편리하지 못한 시청각 자료의 공유, 협업 도구의 어려운 조작 등)에서 이미 알려진 여러 문제점 들을 해결하기 위해, 개념적인 프레임워크들이 설계되었다. 실용적이고 편리한 협업 환경 구성을 위해, 본 논문에서는 에이전트 기반의 서비스 합성 모델을 개념적으로 설계한다. 사용자 입장에서 복잡한 협업 환경의 내부 구조를 알 필요 없이, 상위 수준의 작업 지시를 하면 협업 환경에서 주어진 작업을 수행하기 위한 서비스들을 자동적으로 발견하고, 연결하기 위한 모델을 설계한다. 본 서비스 합성 모델을 기반으로 다중 에이전트 시스템 기반의 다자간 협업 환경관리 툴킷을 개발하여, 직관적인 GUI를 통해 협업 노드 상의 다양한 서비스들을 설정, 운용하는 방법을 제공하고, 주어진 작업을 수행하기 위해 필요한 서비스들을 발견하고 연결하는 기능을 제공한다. 구현된 툴킷의 실용성을 실증하기 위하여, 개발된 툴킷을 기반으로 영상 회의를 위한 기능을 제공하는 협업 서비스들을 구현한다.

• 한국통신학회논문지
• /
• 제24권12B호
• /
• pp.2262-2274
• /
• 1999

본 논문은 최근 다자간 멀티미디어 응용들의 출현과 더불어 중요한 전송 방식으로 대두되고 있는 멀티캐스트 통신환경의 다양한 관리 문제들을 해결하기 위한 통합 관리 플랫폼(IPME)을 제안한다. 이를 위해서 본 논문은 먼저 대부분이 다자간 멀티미디어 응용들에서 사용하는 멀티캐스트 통신환경의 문제점 및 관련 연구들을 기술하고, 관리플랫폼의 구현을 위한 설계 요건들을 기술 한 후, 이러한 요건들을 기반으로 멀티캐스트 통신환경을 통한 통합 관리하기 위한 플랫폼의 일반적 구조를 제안한다. 또한 제안된 관리 플랫폼이 제공할 수 있는 멀티캐스트 관리서비스들, 시스템 일반 구조, 기능 모듈들, 이를 실행하기 위한 관리절차, 관리설정단계, 관리 정책 및 관리 정보의 저장을 위한 관리정보베이스(MIB)구조 등의 관리 구조들도 제안한다. 제안된 IPME 구조의 타당성을 검증하기 위해서 멀티캐스트 통신환경을 이용하는 H.263 부호화 복호화 시스템에 대한 멀티캐스트 QoS 관리서비스에 적용하여 설계하고 이에 대한 프로타입 시스템을 구현한다.

• 한국실내디자인학회논문집
• /
• 제28호
• /
• pp.68-76
• /
• 2001

Owing to the mass-housing policies of high-density and high-rise, the residential environments in Korea have come to be uniform and monotonous. Nevertheless, the design competitions introduced for th first time in 1980s have played significant roles in developing the fresh ideas and concepts in housing design. It is important to review the ideas played proposed in competitions until now in order to spread them into other housing developments. In this context, this study classified the types of unit plan and analyzed their design characteristics in the proposals of housing design competitions in 1990s.

• 한국주거학회논문집
• /
• 제19권4호
• /
• pp.21-29
• /
• 2008

The purpose of this study is to evaluate preferences for spatial composition by urban design guidelines of detached housing areas using CG simulation, with the aim of contributing to the improvement and management of residential townscapes. The list of urban design guidelines for detached housing areas was derived from an analysis of urban design guidelines and landscape regulations from the U.S.A, Japan, and Korea. These guidelines comprise building guidelines, landscape guidelines, street guidelines, and sign guidelines. Through the preferences revealed by CG simulation, an optimum presentation method for the urban design guidelines was determined. Based on the results of preferences, an appropriate management system and regulation standards were proposed. In conclusion, the efforts carried out on the study and legislation of a management system and regulation standards for the urban design guideline will accomplish the amenity of residential environments.

• 한국실내디자인학회논문집
• /
• 제38호
• /
• pp.173-181
• /
• 2003

This study was intended to investigate the satisfaction degree of users with ward design, and on the basis of this, to suggest the design guidelines of user-oriented general hospital ward. A general hospital in Busan was case-studied. Subjects were 49 patients, 50 families, 50 nurses in this hospital. The results were as follows; The satisfaction degree of users with the psychological factors of ward design was relatively low, while the user satisfaction degree with the functional aspects was relatively high. As for the difference among users, the satisfaction degree of patients and their families with the functional aspects of ward design was higher than that of nurses, and there were no many cases to show the difference among users' satisfaction degree with the psychological factors.

• KIEAE Journal
• /
• 제5권1호
• /
• pp.11-18
• /
• 2005

The optimized HVAC system design in tall buildings enable owners to save unnecessary energy consumption and residents to have comfort environments. The purpose of this study is to develop design process for optimized HVAC system design in tall buildings. As basic researches, literature researches and case studies of HVAC system design in tall buildings were performed. Survey was processed among expert in the field and key considerations on HVAC system design were drew as conclusions. With these conclusions, studies were performed on effects of wind velocity, outdoor air temperature, and solar radiation that are main factors of load calculation in tall buildings. Finally, air-tightness and stack effect were analyzed and estimated by literature studies, field measurements and computer simulations.

• Journal of Ship and Ocean Technology
• /
• 제4권4호
• /
• pp.1-18
• /
• 2000

The paper describes a formalisation of a Design for Safety methodology in an integrated envi-ronment, outlines early developments of a software tool, and presents the results of an appli-cation of the methodology to a case study. The approach adopted attempts link safety per-formance prediction through the utilisation of appropriate technical tools, safety assessment deriving from risk-based methodologies and disparate design activities and issues. Black-board systems have been utilised as the platform in the development of the integrated design environment, allowing safety assessment to become an integral part of the design process. Finally, the case study addresses the application of the developed methodology to three dif-ferent arrangements of a conventional passenger Ro-Ro vessel, with the aim to demonstrate the validity of the process and methodology adopted. The findings are presented and dis-cussed, and recommendations given for the way forward.

• 한국CDE학회논문집
• /
• 제4권3호
• /
• pp.180-189
• /
• 1999

Solid freeform fabrication technology, widely known as rapid prototyping an rapid tooling, can create physical part directly from digital model by accumulating layers of a given material. Providing a tremendous flexibility of a part geometry that they can fabricate, these technologies present a opportunity or the creation of new products that can not be made with existing technologies. For this to be possible, however, various design environments including different fabrication processes needs to be considered at the time of design, and finding an appropriate design solution for the new product by combining necessary design communications become increasingly complex as environmental condition become diverse. This paper proposes a geometric modeling paradigm for design and fabrication of a new product, honeycomb structural geometry.

• 한국BIM학회 논문집
• /
• 제5권1호
• /
• pp.16-24
• /
• 2015

The kinetic façade system is an interactive building envelope which is adaptive to environmental condition by transforming the behaviour of its components. The design process of kinetic façade system calls for a novel approach. It needs to support designers to adopt technologies from multidisciplinary fields such as physical computing and robotics. In this paper, prototyping method is introduced as a useful technique for implementing kinetic façade systems. In order to incorporate prototyping method into architectural design process, two aspects are investigated in digital design studio: (1) The interactions between digital and analogue environments (2) The role of traditional design tools. Furthermore, the role of BIM is investigated by analyzing two aspects.

• 전자통신동향분석
• /
• 제35권2호
• /
• pp.69-78
• /
• 2020

Small portable devices such as mobile phones and laptops currently display a trend of high power consumption owing to their characteristics of high speed and multifunctionality. Low-power SoC design is one of the important factors that must be considered to increase portable time at limited battery capacities. Popular low power SoC design techniques include clock gating, multi-threshold voltage, power gating, and multi-voltage design. With a decreasing semiconductor process technology size, leakage power can surpass dynamic power in total power consumption; therefore, appropriate low-power SoC design techniques must be combined to reduce power consumption to meet the power specifications. This study examines several low-power SoC design trends that reduce semiconductor SoC dynamic and static power using EDA tools. Low-power SoC design technology can be a competitive advantage, especially in the IoT and AI edge environments, where power usage is typically limited.