• Proceedings of the KAIS Fall Conference
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• 2007.05a
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• pp.165-167
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• 2007

최근 웹서비스의 사용은 응용 칸 통신과 상호운용성의 필요가 증가됨에 따라 빠르게 확장되고 있다. 웹 서비스는 SOA의 참조아키텍처로서 필요한 복잡한 연산 수행 컴포넌트를 표준인터페이스를 사용하여 결합하도록 한다. 그러나 웹서비스에 대한 분산 기업응용에 적용이 요구되고 있으며 이를 위해 위험요소분석, 대응정책 및 해결책에 대한 방안이 부재한 상태이다. 본 논문에서는 다양한 웹서비스의 품질관리를 위한 지능형 웹 서비스 품질 관리 아키텍처를 설계하고 웹서비스의 관리를 위해 온톨로지를 적용하여 운영할 수 있는 아키텍처를 제안한다.

• 한국IT서비스학회:학술대회논문집
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• 2007.05a
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• pp.197-202
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• 2007

서비스 지향 아키텍쳐(SOA: Service Oriented Architecture)는 기업의 모든 컴퓨팅 자원을 서비스제공 및 사용체계로 전환하게 함으로써, 복잡하고 다양한 시스템간의 유기적인 결합과 IT 자원의 활용율을 극대화시킬 수 있는 프레임워크이다. SOA 시스템을 구현하기에 가장 적합한 체계로써, 웹 서비스 표준이 제시되고 있는데, 이는 웹 서비스가 서비스 기술, 발견, 활용에 있어 SOA의 기본 사상을 충분히 반영하고 있기 때문이다. 웹 서비스의 현실적 적용을 위해 가장 중요한 요소는 웹 서비스의 품질보장이며, 이를 위해 OASIS 국제표준기구의 WSQM 기술위원회에서는 WSQM(Web Service Quality Model) 스펙을 제시하였다. WSQM은 웹 서비스 품질요소와 품질관계자, 그리고 그들간의 품질행위를 추상적 관점에서 모델링하고 있다. 여기서, 특히 품질요소는 웹 서비스의 품질 상태를 직접 표현한다는 측면에서 가장 중요한 항목이라 할 수 있다. 하지만, WSQM에서는 모델링에 중점을 두고 있으므로, 현실세계에서 웹 서비스 품질요소의 값을 구체적이고, 표준화된 형태로 표현하기 위해서는 웹서비스 품질기술언어와 같은 XML 형태의 정규화된 형태가 제시되어야한다. 본 논문에서는 이를 작성하기 위한 기본 개념과 이를 적용한 웹 서비스 품질기술언어의 구성항목에 대해 설명하고자 한다.

• KIEAE Journal
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• v.7 no.1
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• pp.15-22
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• 2007

Indoor air quality(IAQ) problems are not limited to large office buildings that are inadequately operated. In fact, many school buildings have significant potentials of air pollution and indoor air pollutants may be of particular concern because it is estimated that most young students who are physically weak to the pollutants spend about 90% of their time in classrooms. The goal of the study is to provide academic and architectural information on the major factors that influence indoor air quality in the elementary school. In order to gain a better understanding of IAQ problems in schools, a series of measurement studies of indoor air quality were designed and 3 different elementary school buildings located in Chuncheon were selected. The levels of CO, $CO_2$, and total volatile organic compounds(TVOCs) including formaldehyde(HCHO), major concern of this study, were measured in absence of students after class. As the results, it is noticeable that most indoor air pollution comes from sources inside the building, which are, for example, adhesives, upholstery, manufactured wood products, art and scientific supplies. The level of CO was measured similarly to that of outdoors, which means no impact on the indoor air problems since it is lower than the code. Ventilation played an important role in the level of $CO_2$ of which difference was 1.7 times in rough and 230 % of difference in the level was detected among the 3 school buildings. This concludes that indoor air problems might be result of poor building design with inadequate location of corridors within space organization or occupant activity patterns of ventilation.

• Korean Journal of Human Ecology
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• v.20 no.3
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• pp.691-711
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• 2011

This study examines the preliminary license and approval facilitation standards for improvements in quality for childcare centers focusing on the number of children, building space standards, facilities and equipment, and childcare program. Data from 48 caese was collected from childcare centers nationwide in Korea through a questionnaire and building plan. The first step for starting care licensing is to work out the ages and numbers of children within four or five age ranges. The second step is to work out the number of children as small, medium, or large considering staff to child ratios and building size. The Nnext step is to make a choice about childcare service quality classification as minimum, fair, or good, considering space requirements per child for the building, the classroom and the outdoor playground. The next step is to make a choice of space organization relating to service programs, considering the sleeping and eating area, indoor play area, toilet & washing facilities, classroom layouts such as cluster type, double zone type, single zone type, and others. Also, each room and entrance, office, kitchen, storage, laundry, teacher's area, and chilldren's area, need to be checked for space requirements and performances. The last step is to arrange the childcare program with the building and site plan. In conclusion childcare service quality will get better by upgrading of license regulation especially in minimum space requirements per child, corresponding with an increase in GNP and housing area per person. This is needed for childcare licensing in order to determine the quality level of childcare service.

• Journal of Korean Society for Quality Management
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• v.45 no.4
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• pp.981-994
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• 2017

Purpose: In this study, the reliability growth management procedures for armed vehicle is suggested and an illustrative case study of launcher system is given. Methods: Crow-AMSAA model is adopted to manage reliability growth of armed vehicle using failure data acquired from development test phase to field operation phase. Between the development test phase and the production phase, the suggested reliability growth procedures for armed vehicle entails accelerated life test of the selected module whose design is changed to improve its reliability for assuring the target system reliability. And it can be verified through estimating the system reliability based on the failure data of field operation phase. Results: It is shown that the proposed reliability growth management procedures are effective for armed vehicle based on the case study of launcher system. After estimating the reliability of launcher system at every development test, some items are selected to change their designs for improving reliability. Accelerated life test is performed to prove the reliability improvement and finally it is verified through the field operation. Conclusion: The reliability growth management procedures for armed vehicle is suggested and the case study of launcher system shows it can be effective for managing the reliability growth of the armed vehicle.

• Journal of the Korean Society of Urban Environment
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• v.18 no.4
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• pp.439-453
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• 2018

The purpose of this study is to evaluate water quality characteristics of main drinking waters in natural parks, for providing the basic information of water quality and to propose the appropriate management method. to maintain the water quality standards. As a result of the analysis, microorganisms were mostly detected in the nature of natural park. And some sites are currently using UV sterilizer and ozone treatment, and it is considered appropriate to extend the use to other main drinking water. It is also good to boil drinking water at home. Turbidity is expected to improve through environmental cleanup. Overall, the main drinking water in the natural park is suitable for water quality standards, and it is considered that maintenance such as cleaning is necessary.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.7
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• pp.1575-1584
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• 2009

Improvement of service quality and to be caused by with high re-use result expandability, the importance of SOA softwares to be coming to be high recently, according to the [thu] your (Gartner) group from 2006 until 2011 CAGR (yearly average complex growth rate: Compound it is a tendency where in Annual Growth Rate) these 35% the domestic and foreign SOA software markets are increasing suddenly at this degree. It follows hereupon and in about quality rating of SOA softwares the demand is augmented in about development of the quality rating method which it follows international standard. In order to evaluate the use characteristic quality of SOA softwares a quality and about the use frost requirement from the research which it sees and escape with the scale box it examined it measured and in about the method which it decides and an evaluation instance a research the result according to the standard which is appropriate it accomplished it presented. The research which it sees it leads and it induces strategic engineering development it leads and with the fact that it will be the possibility of raising an objectivity and an application degree it expects the use characteristic quality increase of SOA softwares.

• KIEAE Journal
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• v.4 no.3
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• pp.203-210
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• 2004

This dissertation identifies and investigates the possible control modes of hybrid ventilation system in applying to general apartments. It evaluates range of hybrid ventilation control modes in terms of indoor air quality, thermal comfort, and energy consumption in a living room and a kitchen of the $1000m^2$ apartment. The TRNSYS simulation program was used for evaluating the following four ventilation types : A ventilation mode relying on only infiltration for supplying air, A natural ventilation mode considering with weather condition, A hybrid ventilation (natural + mechanical ventilation) mode allowing minimum ventilation with no heat exchange, and a hybrid ventilation mode with heat exchange. This study shows the following results. As temperature being controlled by heating cooling equipments, there is without significant difference in thermal performance among ventilation types. Regarding Indoor Air quality, Indoor air contamination level of the hybrid ventilation case consistently keep the lower levels. The hybrid ventilation modes consume more energy by a 49% as compared to the A ventilation mode relying on only infiltration for supplying air. It is caused by the continuous ventilation for keeping good indoor air quality; the increase of energy consumption can be attributable to the increase of the heating energy. Therefore, the heat exchange between indoor and outdoor air is required during heating season in severe weather conditions. During the cooling seasons, Introducing natural ventilation can achieve energy saving by 40 ~ 45%. Thus, it can be an effective strategies for energy saving. Based on these results, a hybrid ventilation system can be suggested as an effective ventilation strategy for archiving high level of indoor air quality, thermal comfort, and energy consumption.

• Journal of Korean Society on Water Environment
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• v.23 no.2
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• pp.260-265
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• 2007

This study was carried out to complement water quality standards and to establish new concept for water quality standards reflecting current state of water quality in small streams. By this purpose, discriminant analysis was performed and Water Quality Level Model (WQLM) was developed using the data such as EC, BOD, $COD_{Mn}$, SS, T-N, T-P, $NH_3-N$ in 224 agricultural streams. To give water quality level for water quality parameters, it divided into 20% respectively in the order of excellent water quality. On the basis of the lowest water quality level, water quality level of small streams is granted. As a result of it, number of stream corresponding to Level I was no, Level II was 2 streams, Level III was 22 streams, Level IV was 70 streams, and Level V was 130 streams. Average of water quality in each level was the highest in Level V. EC, SS, and T-N of 7 parameters were selected in variance concerned water quality level. By standardized canonical discriminant function coefficient, EC of three variances was the highest in 0.625 at the discriminant power. The next was T-N (0.509), SS (0.414). By discriminant function for water quality level, Level II was equal to $-2.973+19.376{\times}(EC)+0.647{\times}(T-N)+0.009{\times}(SS)$, Level III was equal to $-3.288+19.190{\times}(EC)+0.733{\times}(T-N)+0.041{\times}(SS)$, Level IV was equal to $-4.462+27.097{\times}(EC)+0.792{\times}(T-N)+0.053{\times}(SS)$, and Level V was equal to $-9.117+40.040{\times}(EC)+1.305{\times}(T-N)+0.111{\times}(SS)$. As a result of test at real agricultural watershed of Jeongan and Euidang in Gongju city, the fitness of WQLM was high to 88.78%. But, to get accomplished water quality assessment more exactly in agricultural streams, we had to concentrate and get vast data, and WQLM was modified and complemented continually.

• The KIPS Transactions:PartD
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• v.13D no.5 s.108
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• pp.699-708
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• 2006

The latest biometric field have marched fast with security technology of IT. As importance of present biometrics is realized, internal and external biometrics software market is trend that is soaring. Accordingly, high reliability of biometric software and request of high quality software are enlarged. Evaluation items and criteria must be established for biometric software quality assurance. In this paper, we development the evaluation module for biometric software test based on ISO/IEC 12119 that is the standard about software quality requirement and test, and ISO/IEC 9126 that is standard about evaluation of software product, and ISO/IEC 14598-6 that is the standard about construction of the evaluation module. Constituents of biometric software products(product descriptor, user document program and data) is subject to the quality evaluation module that we developed in this paper, we can expect improvement in the quality of software by using with a standard such as ISO/IEC 9126-3 that can be used in software development process.