• Title/Summary/Keyword: Quality assurance systems

Search Result 303, Processing Time 0.034 seconds

Recent Trends in Domestic Landfill Liners (국내폐기물 매립장 치수재 현황조사 연구)

  • 정하익;홍성완
    • Proceedings of the Korean Geotechical Society Conference
    • /
    • 1994.03a
    • /
    • pp.65-74
    • /
    • 1994
  • In this paper, various aspects of landfill liners such as guide of liner installation, type of bottom liners and vertical barriers, domestic companies producing and dealing liners, quality assurance and control of liners, are investigated. Although sanitary landfilling of domestic municipal wates has begun at the last decade, we still need to strengthen the regulation for designing and constructing the liner systems and to diversify the types of liners used in the landfills. Technologies of quality control for selecting and installing landfill liners should be improved as soon as possible. In order to develop the technologies and to slove th problems related to landfill liners, more efforts should be taken among the engineers and the agencies who are interested in maintraining safe subsurface environments.

  • PDF

Handling Failures in Semantic Web Service Composition Through Replacement Policy in Healthcare Domain

  • Lakshmana Kumar Ramasamy;Seifedine Kadry;M. Amala Jayanthi;Wei Wei;Seungmin Rho
    • Journal of Internet Technology
    • /
    • v.21 no.3
    • /
    • pp.733-741
    • /
    • 2020
  • Consistency of web service composition is a challenge for developing business applications. As web services are naturally changeable, the way to deliver consistent web services composition over unreliable web services could pose a significant problem. We propose a framework for semantic web services in healthcare domain that automatically performs web service discovery, composition and quality of service assurance, and, performs error handling through the replacement policy and fault-tolerant composition of web services that mixes both exception managing and transaction approaches. The framework enables the development of personalized healthcare systems.

A Study on the Development of Rolled Dry Floor Heating System for Improving Workability (현장 시공성 개선을 위한 롤타입 건식바닥난방시스템 개발)

  • Lee, Gyu-Dong;Kim, Jun-Ho;Jeong, Chang-Ho;Kim, Dong-Woo;Ogawa, Keiichiro
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2012.11a
    • /
    • pp.177-180
    • /
    • 2012
  • Korea residential housing generally use wet floor heating system 'Ondol' which consist of insulation cushioning, lightweight foamed concrete, hot water pipe and mortar on top of reinforced concrete slab. Wet floor heating system's installation process is too complicate and difficult to supervise field for continuing assurance quality. Also, this method has a huge impact on the progress of construction because it take a long time to cure finishing mortar and lightweight foamed concrete. Therefore, it is considered a disturbance factor of reduction of construction duration for enhancing competitiveness. In this study, we conducted an experiment about the radiant heat performance and temperature difference on upper panel of rolled dry floor heating systems which is jointly developed by Kolon global and Sumisho Metalex for remodeling housing, studio apartment and the urban-life housing.

  • PDF

Durability and Reliability Improvement for the Rubber Mount of Industrial Trucks (산업용차량 고무마운트 부품에 대한 내구성 및 신뢰성개선)

  • Jung, Won
    • Journal of Korean Society of Industrial and Systems Engineering
    • /
    • v.30 no.3
    • /
    • pp.127-134
    • /
    • 2007
  • Predicting fatigue life of rubber components is an important issue in design procedure for industrial trucks to assure the durability and reliability. Main considerations in designing rubber components against fatigue failure are the compounding technology, shape design, and manufacturing process. Among them the rubber compounding technology is one of the most critical factor to determine more than 50% of component's quality. This paper presents how to improve the durability and reliability of industrial rubber mount during its design, development and prototype testing. The data presented illustrates explicitly the prediction of reliability growth in the product development cycle. The application of these techniques is a part of the product assurance function that plays an important role in rubber components reliability improvement.

Application of SE Management Techniques for Space Launch System Development (우주 발사 시스템 개발에 있어서의 SE 관리기법 적용)

  • Joh, Miok;Cho, Byoung-Gyu;Oh, Bum-Seok;Park, Jeong-Joo;Cho, Gwang-Rae
    • Journal of the Korean Society of Systems Engineering
    • /
    • v.1 no.1
    • /
    • pp.53-60
    • /
    • 2005
  • System engineering(SE) management techniques applied for space launch system development are introduced to assess the current status and address the effectiveness of these techniques. Management plans and guides are prepared for the work breakdown structure, data, configuration, interface control, quality assurance, procurement, reliability, risk and verification/validat ion. Further improvement is required for the system engineering management plan(SEMP) to merge the international cooperation into current engineering management system.

  • PDF

A Study on the Improvement of Defense Specification Suitability Review System (국방규격 적합성 검토체계 개선에 대한 고찰)

  • Kim, Sungkyung;Hur, Jangwook
    • Journal of the Korea Institute of Military Science and Technology
    • /
    • v.19 no.5
    • /
    • pp.662-668
    • /
    • 2016
  • Defense specification suitability review task means to examine whether to need enactment, amendment or abolition of defense specification, and realistic and efficient review environment are urgently needed by improving system. For the promotion of efficient tasks, the cycle of defense specification suitability review needs to be changed to 5 years for active specifications and 10 years for inactive specifications. To simplify the standards of defense specification suitability review, the distinction between prior management items and general management items should be abolished and the number of review items need to be reduced from ten to three. Also, in order to promote substantial defense specification suitability review, a system improvement is needed to utilize retired professionals from defense acquisition related agencies.

Development of Diesel Generator Excitation System in the Nuclear Power Plant (원전 비상디젤발전기 여자시스템 개발)

  • Shin, Man-Su;Ryu, Ho-Seon;Lee, Joo-Hyun;Im, Ik-Heon;Jeong, Tae-Won
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.59 no.2
    • /
    • pp.397-406
    • /
    • 2010
  • Because diesel generator excitation systems in the nuclear power generating station are included among safety related c1asses(and Class 1E), they have been supposed to apply in the nuclear power generating stations through equipment qualification by nuclear law and so on. So, they has been controlled and assured completely by quality assurance throughout the total development journey. This paper looks into the journey of development of diesel generator excitation systems in the nuclear power generating station.

A Case Study on Small Group Activities for Total Innovation (전사적 혁신을 위한 소집단활동에 대한 사례연구)

  • Sung, Su-Gyeong;Kim, Joon-Seok;Yun, Tae-Hong;Kim, Chang-Yeol;Byun, Jai-Hyun
    • IE interfaces
    • /
    • v.22 no.2
    • /
    • pp.135-143
    • /
    • 2009
  • Six sigma innovation activities have been deployed in the engineering, management, and R&D sectors in an aerospace production company. For the success of total innovation, the company realized that it is necessary to involve the field workers in the six sigma innovation activities. In this paper small group activities in the aerospace production company is introduced. The implementation system, project evaluation and compensation system, and future directions are presented.

Quasi-static Analysis of Vehicle Seatbelt Using Analysis of Variance and Improvement of Tensile Test Correlation (분산 분석을 이용한 자동차 안전벨트 준정적 해석과 인장시험 상관성 개선)

  • Lee, Kwangseop;Eo, Youngwoo;Kim, Samsung;Kim, Dooyong;Song, Taeckrim;Lee, Kyeongsang
    • Transactions of the Korean Society of Automotive Engineers
    • /
    • v.24 no.3
    • /
    • pp.273-278
    • /
    • 2016
  • This study makes a relative comparison of the results of tensile test and quasi-static analysis using AGL(Adjuster Guide Loop) model that plays a role in adjusting the height of shoulder belt, of the components of the vehicle seatbelt system and attempts to propose a method of reducing the error rate of the quasi-static analysis technique effectively. This study selects two major factors affecting the result of an analysis, draws the result of analysis through the method of experimental design, one of the statistical techniques and understands the contribution rate of the major factors affecting the result of the analysis through ANOVA(Analysis of Variance).

Present Status of the Quality Assurance and Control (QA/QC) for Korean Macrozoobenthic Biological Data and Suggestions for its Improvement (해양저서동물의 정량적 자료에 대한 정도관리 현실과 개선안)

  • CHOI, JIN-WOO;KHIM, JONG SEONG;SONG, SUNG JOON;RYU, JONGSEONG;KWON, BONG-OH
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
    • /
    • v.26 no.3
    • /
    • pp.263-276
    • /
    • 2021
  • Marine benthic organisms have been used as the indicators for the environment assessment and recently considered as a very important component in the biodiversity and ecosystem restoration. In Korean waters, the quantitative data on marine benthos was used as one of major components for the marine pollution assessment for 50 years since 1970s. The species identification which is an important factor for the quantitative biological data was mainly performed by the marine benthic ecologists. This leads to the deterioration of the data quality on marine benthos from the misidentication of major taxonomic groups due to the lack of taxonomic expertise in Korea. This taxonomic problem has not been solved until now and remains in most data from national research projects on the marine ecosystems in Korean waters. Here we introduce the quality assurance and control (QA/QC) system for the marine biological data in UK, that is, NMBAQC (Northeast Atlantic Marine Biological Analytic and Quality Control) Scheme which has been performed by private companies to solve similar species identification problems in UK. This scheme asks for all marine laboratories which want to participate to any national monitoring programs in UK to keep their identification potency at high level by the internal quality assurance systems and provides a series of taxonomic workshops and literature to increase their capability. They also performs the external quality control for the marine laboratories by performing the Ring Test using standard specimens on various faunal groups. In the case of Korea, there are few taxonomic expertise in two existing national institutions and so they can't solve the taxonomic problems in marine benthic fauna data. We would like to provide a few necessary suggestions to solve the taxonomic problems in Korean marine biological data in short-terms and long-terms: (1) the identification of all dominant species in marine biological data should be confirmed by taxonomic expertise, (2) all the national research programs should include taxonomic experts, and (3) establishing a private company, like the Korea marine organism identification association (KMOIA), which can perform the QA/QC system on the marine organisms and support all Korean marine laboratories by providing taxonomic literature and species identification workshops to enhance their potency. The last suggestion needs more efforts and time for the establishment of that taxonomic company by gathering the detailed contents and related opinions from diverse stakeholders in Korea.