• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.25 no.7
• /
• pp.363-370
• /
• 2013

HVAC&R systems are the most energy consuming building services, representing approximately half of the final energy use in the building sector. Despite their significant energy use, there is a lack of a consistent and homogeneous framework to efficiently guide research. This research is about the energy consumptions of HVAC&R systems, with the aim of establishing a common idea for the analysis of building energy efficiency. Our approach deals with the concept of an HVAC&R set that is composed of subsystems. A matrix combination evaluation is examined, and a total of 960 sets can be implemented in a large scale office building. A method as a tool for energy evaluations of HVAC&R systems, and HEET as a energy simulation program, were developed.

• Korean Medical Education Review
• /
• v.15 no.3
• /
• pp.120-124
• /
• 2013

The clinical clerkship focuses students on developing their ability to perform comprehensive diagnosis and management of patients with common undifferentiated problems by the integration of knowledge and clinical reasoning. Therefore, the clerkship evaluation system should assess their actual problem solving and professional behavior. However, concern remains that clerkship evaluations are imprecise and highly variable. This review is designed to provide faculty members with concepts, options, and a methodology to actively teach and evaluate the clinical clerkship, as well as offer encouragement and inspiration to medical students. We reviewed past and current clinical clerkship evaluations and discuss several tips to improve clinical excellence such as continuity, transparency of the evaluation process, a faculty development program, practical examination of clinical skills, implementation of a checklist for recording exposure and skills, providing prompt and constructive feedback to students, self-evaluation of professional performance, varying multi-faceted assessment combinations, being outpatient clinic-centered, and having dedicated faculty members who give students one-on-one contact with a preceptor.

• Environmental Analysis Health and Toxicology
• /
• v.17 no.2
• /
• pp.95-107
• /
• 2002

This study was designed to investigate the characteristics of atmospheric concentrations of toxic volatile organic compounds (VOCs) in Korea. Target compounds included 1,3-butadiene, aromatics such as BTEX, and a number of carbonyl compounds. In this paper, as the first part of the study, the performance of sampling and analytical methods was evaluated for the measurement of selected VOCs and carbonyl compounds in the ambient air. VOCs were determined by the adsorbent tube sampling and automatic thermal desorption coupled with GC/MSD analysis, while carbonyls by the DNPH-silica cartridge sampling with HPLC analysis. The methodology was investigated with a wide range of performance criteria such as repeatability, linearity. lower detection limits, collection efficiency, thermal conditioning, breakthrough volume and calibration methods using internal standards. In addition, the sampling and analytical methods established in this study were applied to real field samples duplicately collected in various ambient environments. Precisions for the duplicate samples appeared to be comparable with the performance criteria recommended by USEPA TO-17. The overall precision of the sampling and analytical methods was estimated to be within 20 ∼ 30% for major aromatic VOCs such as BTEX, whereas the precision for major carbonyl compounds such as formaldehyde and acetaldehyde was within 10 ∼ 20% for field samples. This study demonstrated that the adsorbent sampling and thermal desorption method can be reliably applied for the measurement of BTEX in ppb levels frequently occurred in common indoor and ambient environments.

• Journal of Digital Contents Society
• /
• v.18 no.7
• /
• pp.1259-1265
• /
• 2017

While there is consensus on the educational potential of serious games, there is still a lack of methodology and tools to support analysis and evaluation as well as design. This paper intends to explore the new methodology or design direction by analyzing pedagogy-related research required for serious games. To do this, we analyzed 4DF(Four Dimensional Framework), GOM(Game Object Model), LM(Learning Mechanics)-GM(Game Mechanics) and a framework for teacher. One of the biggest issues faced by educational games is the inadequate integration of education and game principles. This is due to a variety of factors, including the fact that game designers and educational professionals do not share a common vocabulary or work domain perspective.

• The KIPS Transactions:PartD
• /
• v.11D no.4
• /
• pp.917-928
• /
• 2004

Common Criteria as ISO/IEC 15408 is used to assure and evaluate IT system security. As the Prime class of security assurance requirement, CM Configuration Management needs the more principled quality activities and practices for developer must be supported. So in this paper, we propose the well-defined CM method as guideline for TOE developer based on Process model including common criteria and develop the CMPET a quantitative process evaluating tool for CM using checklist. It can support useful process analyzing data to developer, evaluator and user.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2001.05a
• /
• pp.214-217
• /
• 2001

This paper presents an implementation methodology of common Rf- integrated PCS base station system which, is capable of providing PCS services for 3 PCS carriers concurrently and wireless system performance evaluation data is shown. We have built up a common PCS base station system using a commonization module, which is consisted of a multi-channel combiner, duplexer, LNA, power divider, feeder line, and a common set of antennas. It was shown that the performance of the system within the total 30MHz PCS frequency range is uniformly acceptable and measured signal quality and coverage are equivalent to that of the individual PCS base station. It is expected that PCS carriers are able to save a huge amount of installation and maintenance expenses by installing and sharing this base station system. This paper forms a groundwork for deploying efficient and economical IMT-2000 network.

• 한국경영정보학회:학술대회논문집
• /
• 2007.06a
• /
• pp.576-581
• /
• 2007

The purpose of this paper is to strengthen trust on the automated collaborative filtering system. Automated collaborative filtering system is quickly becoming a popular technique for recommendation system. This elaborative methodology contributes for reducing information overload and the result becomes index of users' preference. In addition, it can be applied to various industries in various fields. After it collaborative filtering system was developed, many researches are executed to enhance credibility and to apply in various fields. Among these diverse systems, collaborative filtering system which uses Pearson correlation coefficient is most common in many researches. In this paper, we proposed new process diagram of collaborative filtering algorithm and new factors which should improve the credibility of system. In addition, the effects and relationships are also tested.

• Korean Institute of Interior Design Journal
• /
• no.33
• /
• pp.90-98
• /
• 2002

The purpose of this study is total analysis which is satisfied factors to users to object of inservice training institute in large enterprise. Common factors are inservice training building, outer space and unit of abode. Those are deduced in the planing stage by important degree. Methods of statistical analysis are enforced by analysis of primary factor, correlation and multiple regression. The result of this shows a difference between important orders to users according to character of influenced factors of the inservice training building and abode.

• Proceedings of the Korean Information Science Society Conference
• /
• 2002.10d
• /
• pp.73-75
• /
• 2002

기존에 수행되어 왔던 방법론들을 새롭게 바꾸는 것은 쉬운 일이 아니다. 기존의 보증방법론을 활용하여 CC기반의 정보보호시스템의 보안성 평가를 하는 것이 필요하다. 본 연구에서는 CC기반의 정보보호시스템의 보안성 평가를 위한 기존 보증 방법론의 접근 방안을 연구하기 위한 첫 단계로, 기존 보증 방법론을 조사 및 분석하여 활용하기에 적합한 방법론들의 목록을 도출한다. 본 연구에서 도출한 CC와 상호호환이 가능한 기존 보증 방법론을 이용하여 CC기반의 보안성 평가를 위한 기존 보증 방법론의 접근 방안의 연구는 평가를 효율적으로 수행할 수 있을 것이다.

• Journal of the Korean Institute of Telematics and Electronics B
• /
• v.30B no.7
• /
• pp.1-13
• /
• 1993

In this paper, the problems of the conventional special-purpose array processor such as the deficiency of flexibility have been investigated. Then, a new modified methodology has been suggested and applied to obtain the common solution of the three typical App algorithms like SP(Shortest Path), TC(Transitive Closure), and MST(Minimun Spanning Tree) among the various APP algorithms using the similar method to obtain the solution. In the newly proposed APP parallel algorithm, real-time Processing is possible, without the structure enhancement and the functional restriction. In addition, we design 2-demensional bit-parallel low-triangular systolic array processor and the 1-PE in detail. For its evaluation, we consider its computational complexity according to bit-processing method and describe relationship of total chip size and execution time. Therefore, the proposed processor obtains, on which a large data inputs in real-time, 3n-4 execution time which is optimal o(n) time complexity, o(n$^{2}$) space complexity which is the number of total gate and pipeline period rate is one.