• Journal of the Korea Academia-Industrial cooperation Society
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• v.6 no.5
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• pp.378-383
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• 2005

Traffic engineering is a technology that guarantees quality of service that users want and maximize inflection degree of network resources at the same time as evenly distributing traffic to whole network. To improve performance of network at traffic and resources level, traffic engineering aims at utilizing network resource efficiently and effectively and must be satisfied performance requirement concerned with traffic. In this paper, two models to embody traffic engineering are analyzed and finally functional structure of IP/WDM traffic engineering is explained.

• The Transactions of the Korean Institute of Electrical Engineers D
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• v.50 no.1
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• pp.45-50
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• 2001

With increasing complexity of digital logic circuits, fast and accurate verification of functional behaviour becomes most critical bottleneck in meeting time-to-market requirement. This paper presents several techniques for accelerating a cycle-based logic simulation. The acceleration techniques include parallel pattern logic evaluation, circuit size reduction, and the partition of feedback loops in sequential circuits. Among all, the circuit size reduction plays a critical role in maximizing logic simulation speedup by reducing 50% of entire circuit nodes on the average. These techniques are incorporated into a levelized table-driven logic simulation system rather than a compiled-code simulation algorithm. Finally, experimental results are given to demonstrate the effectiveness of the proposed acceleration techniques. Experimental results show more than 27 times performance improvement over single pattern levelized logic simulation.

• Journal of the Korean Institute of Landscape Architecture
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• v.15 no.3
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• pp.1-10
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• 1988

The initial selection of plants is the decisive step in the ultimate success of any landscape planting. This study intended to establish a reasonable selecting criteria of tree in the landscape through the holistic consideration of aesthetic, functional, cultural, operational and ecological viewpoints. The matrices of evaluating the fitness of tree were modulated to 10 categories ; availability from the established nursery. aesthetic value, indigenous to the locality, maintenance, soil fertility requirement, environmental tolerances. growth rate. wild-life food production. use of plants in design and user's likes. This 10 categories were weighted to their fitness as high(10 points), medium(8 points) and low(5points). Thus suitable plants were identified which got 70 more points from total 100 points. Such a method was believed as a rational process to get trust from client. to persuade uneducated client and to be free from designer's prejudice through a case study. But it is important to landscape designer to recognize the relationship between the rationality which prevails throughout the modern technical world and the intuitive aspects of design that are essential for developing creative solutions to encourage creativity as well as analytical responsibility.

• Annual Conference of KIPS
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• 2014.11a
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• pp.621-624
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• 2014

클라우드 서비스가 다양해지고 그 수가 급격히 증가하면서 클라우드 서비스 사용자에게 적합한 서비스를 제공하기가 어려워지고 있다. 이러한 문제를 해결하기 위해 서비스 사용자와 제공자 사이에서 클라우드 서비스를 중개해주는 클라우드 서비스 브로커라는 개념이 제시되었다. 클라우드 서비스 브로커의 핵심적인 역할은 사용자의 요구사항에 적합한 서비스를 찾아주는 것이다. 그러나 현재 제시된 클라우드 서비스 브로커 대부분은 클라우드 서비스 전문가의 도움으로 사용자의 요구사항을 분석하는 수동적인 과정이 수행되고 있으며, 체계적으로 기능적 요구사항을 분석하는 과정이 미흡하다. 따라서 유사한 기능을 가지고 있는 클라우드 서비스들 중 사용자의 요구사항의 중요도를 분석해서 가장 근접한 서비스의 선택을 지원해 줄 수 있는 요구사항 분석 기법이 필요하다. 본 논문은 AHP(Analytic Hierarchy Process)의 쌍대비교법을 응용하여 클라우드 서비스에 대한 사용자의 기능적 요구사항을 분석하고 그 결과에 따라 클라우드 서비스를 선택하는 방법을 제시한다.

• Journal of the Korean Society for Precision Engineering
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• v.15 no.9
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• pp.15-24
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• 1998

In this research. we have proposed a new technique to determine .the combination of design parameters for the process design of a hot forged product using artificial neural network(ANN) and statistical design of experiments(DOE). The investigated problem involves the adequate selection of the aspect ratio of billet, the ram velocity and the friction factor as design parameters. An optimal billet satisfying the forming limitation, die filling, load and energy as well as more uniform distribution of effective strain, is determined by applying the ability of artificial neural network and considering the analysis of mean and variation on the functional requirement. This methodology will be helpful in designing and controlling parameters on the shop floor which would yield the best design solution.

• Journal of the Korean Society for Precision Engineering
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• v.16 no.9
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• pp.82-88
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• 1999

In order to execute the major role as the high density large capacity data storage device, which is one of the major characteristics of DVD(Digital Versatile Disk), there must be a method to effectively absorb the external impact or internal vibration. The DVD which has been developed until now tries to control two different types of vibrations, using only one absorber. But this goes against the independence Axiom of Axiomatic Approach which makes the design to be coupled. And in fat most of the malfunctions occurring during DVD data input/output is due to impact or vibration. Therefore in this paper, the vibration absorption system and operation reliability of DVD will be evaluated with the Axiomatic Approach and plans and feasibility to design an improved vibration absorption system will be provided also based on the Axiomatic Approach.

• Annual Conference of KIPS
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• 2012.04a
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• pp.702-705
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• 2012

공통평가 기준(CC, Common Criteria)은 정보 보호 제품, 즉 IT제품에 대한 보안성을 평가하기 위한 국제 평가 기준이다. 그러나 개발자 측면에서는 CC 에서 정의된 보안 기능 사항 중 IT제품 개발에 있어서 어떤 보안기능을 요구하며, 적용 가능한 IT기술에는 무엇이 있는지 알기 어렵다. 이 때문에 평가를 받고자 할 때 제출물을 작성하거나 IT제품 개발에 있어서 많은 시간과 인력이 필요하게 된다. 본 논문은 IT제품 개발자를 위해 공통평가 기준에서 정의하여 서술된 보안기능항목을 이해하고 적용 가능한 IT기술에는 어떤 것 들이 있는지 제시하기 위한 도구를 개발하기 위해 CC(Ver3.1)2부 보안기능 요구사항 중 프라이버시 클래스만을 해결할 수 있는 S/W를 개발 및 프로토타이핑 하였다.

• Annual Conference of KIPS
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• 2013.11a
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• pp.731-734
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• 2013

클라우드 컴퓨팅이 활성화됨에 따라 다양한 클라우드 서비스가 대중적으로 보급되고, 그에 따른 클라우드 컴퓨팅 관련 제품들을 IT시장에서 쉽게 접할 수 있게 되었다. 일반적으로 IT 제품군에 대해서 보안성평가를 수행하고, 그 결과 값을 통해 소비자에게 객관적인 지침으로 활용될 수 있는 국제 표준인 공통평가기준에서는 보안 제품군에 대한 보안목표명세서인 보호프로파일을 제공하고 있다. 하지만 현재 일반적인 IT제품군에 대한 보호프로파일은 존재하나 클라우드 관련 제품군에 대해서는 보호프로파일이 존재하지 않아 보안성평가를 위한 방법이 없는 실정이다. 따라서 본 논문에서는 공통평가기준을 준수하는 클라우드 환경에 적용 가능한 보안기능요구사항을 도출하고자 한다. 도출한 보안기능요구사항을 통해 클라우드 제품군에 대한 보안성을 적용하기 위한 평가 방법으로 사용될 수 있다.

• Annual Conference of KIPS
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• 2024.05a
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• pp.75-78
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• 2024

민간, 공공을 막론하고 디지털 혁신이 필수인 현재 데이터의 중요성은 갈수록 높아지고 있다. 그간 정부의 대규모 지원사업과 민간의 자체 투자로 공급 측면의 데이터는 상당량 축적되어 있으나 막상 수요자가 필요한 데이터를 적시에 구해서 활용할 수 있는 기반은 여전히 미흡한 수준이다. 본 연구에서는 민간-공공을 거쳐 데이터의 유통과 거래를 활성화하고, 수요자와 공급자의 참여를 확대할 수 있는 국가 차원의 통합 데이터 인프라를 제안하고 그 기능적 요구사항과 추진 방향을 제시한다.

• Korean Institute of Interior Design Journal
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• v.24 no.3
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• pp.156-164
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• 2015

Nursing Homes do not have a defined standard in the space area nor does it have a detailed standard facility requirement by law. This can possibly lead to the deterioration of the facility and the system. This directly affects the medical treatment space area within the nursing home. The medical treatment area provides medical treatment to seniors and this is where the seniors get most of their daily services. Therefore, this is research is about the study of the space area of the medical center and the ratio trend of the space area for the medical treatment facility located in senior nursing homes. Ten facilities have been selected in this study to analyze the correlation factors between space area and its trends. The analysis performed includes the conditions relating to the area and what affects the center. We have followed up with a proposal for improvement of the facility and area configuration for the medical treatment facility. Based on the analysis, the following conclusion can be made: First, the senior welfare centers are mostly used as a residence purpose followed a temporary stay of residence facility for the seniors. Second, research indicates that the bigger the facility, nursing and public functions took a larger portion of the space area compared to other services within the senior welfare centers. Third, the study shows the management space area took up about 1%~6% of the entire medical center within the nursing home which is a narrow space area because of the integrated management. Fourth, analysis based on the trend in the time-series indicate after the adoption of the system, there is a continued decline in the space area of nursing, management and public areas. Lastly, since before and after 2008, the space area composition of the nursing facility shows a continuous decline in our study. We can safely conclude that the revised senior welfare act's construction plan has an effect in the facility and is effectively working to meet its requirement. Therefore, the revision of the law is required to reflect the social needs of the residents.