• Title/Summary/Keyword: Operation and maintenance

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The Standardization and effect analysis of core business process of the digital production information management system (integrated POP system) through case construction of chemical manufacturing industry (화학제조업의 사례구축을 통한 디지털 생산정보관리시스템 (통합 POP 시스템) 핵심 업무 프로세스 표준화 및 효과분석)

  • Kim, ChiGon;Kwon, HeeChoul;Zun, Hyungdo;Yoon, KyungBae
    • The Journal of the Convergence on Culture Technology
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    • v.3 no.3
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    • pp.43-49
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    • 2017
  • The purpose of this study is to study the standardization of the core business process in the chemical manufacturing industry and to establish a production information management system for the purpose of establishing the production information management system that can achieve mid -To be applied. The development methodology for the standardization of the chemical manufacturing information system is applied to the production information management system development methodology (PSDM) that was developed and developed by the Agency for Technology and Information Promotion of Small and Medium Enterprises. The standardization target is the system structure, It is a core business process that becomes a skeleton during construction. In this study, the chemical manufacturing SMEs and related professional IT companies who want to build the production information management system can apply the standardized core business process more effectively to build the system more effectively, and provide ease of installation and reliability to the system, In order to maximize the utilization of processes, follow-up education training and maintenance measures are suggested. Applying the results of this study, it is possible to eliminate the unreasonable elements of the production process, improve the quality of production product, and reduce production cost.

Comparative Studies on the Analysis of Pesticide Residues. in Rice, Barley and Wheat (주곡중의 잔류농약분석에 관한 연구)

  • Park Seung Heui
    • Korean journal of applied entomology
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    • v.13 no.4 s.21
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    • pp.235-243
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    • 1974
  • Recenty, the pesticides Pollutions in connection with the maintenance of dietary life are poised as serious sanitary problems. Author have established an appropriate analysis method in this connection and, at the same time, analysed the levels of pesticides residues, such as organochloride pesticides and organic mercurials, contained in main cereals (rice, barley, and wheat) collected throughout the country. Using gas liquid chromatography method, comparative analyses were made of organochloride Pesticides with electron capture detector, and organic mercurials with electron capture detector and the Dithizone Method. As a result, the organic mercurials analysis using gas liquid chromatography is believed to hold out an especially good method for both in terms of its sensitivity and its Practical applications. The summary obtained from these results is as follows; The detectable limit of organochloride pesticides is $5\times10^{-10}$ grams and that of organic mecurials is $5\times10^{-9}$ grams. The detections using the Dithizone Method are difficult. The gas liquid chromatographic analysis of organic mercurials is very simple in its operation and high in its sensitivity, compare with the analysis using the Dithizone Method. Therefore, this analysis is expected to be a good method applicable to the pesticide residues analysis. The levels of pesticide residues contained in samples are very little for tolerance and, therefore, no problem i.: foreseen for eating. The appropriate conditions of gas liquid chromatographic analysis obtained from these results are expected very useful for the date establishing an officially authorized analysis method.

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Geo-Morphological Study of Sand Dune for Railway Project in UAE (UAE 내 철도프로젝트 수행을 위한 사막 사구의 지형학적 특성 연구)

  • Moon, Joon-Shik;Kim, Jae-Young;Lee, Seung-Bok
    • Journal of the Korean Geotechnical Society
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    • v.28 no.9
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    • pp.17-22
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    • 2012
  • Wind blown sand is expected to disrupt the operation of the railway as the presented railway project in this paper consists of large earthworks in extreme topography of the mega dune fields. For successful railway construction in sand dune area, effective mitigation measure is the most important factor to protect the track from wind blown sand. The effective mitigation measure requires an integrated consideration of the earthworks geometry and the direct control measures such as fence system. Basically there's no perfect measure protecting railway track from wind blown sand, and it would be more economical and effective to develop robust, deliberate maintenance program for track and direct control measure on the basis of geo-morphological study. The purpose of this study is to identify the large scale geo-morphological terrains and specific sand dune morphology in the project area in UAE and estimate the direction and migration rate for sand dunes with the local variations in prevailing wind directions by undertaking literature review, and aerial photographs, satellite images, and ground studies.

Development of Time-Dependent Reliability-Based Design Method Based on Stochastic Process on Caisson Sliding of Vertical Breakwater (직립방파제의 케이슨 활동에 대한 확률과정에 기반한 시간의존 신뢰성 설계법 개발)

  • Kim, Seung-Woo;Cheon, Sehyeon;Suh, Kyung-Duck
    • Journal of Korean Society of Coastal and Ocean Engineers
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    • v.24 no.5
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    • pp.305-318
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    • 2012
  • Although the existing performance-based design method for the vertical breakwater evaluates an average sliding distance during an arbitrary time, it does not calculate the probability of the first occurrence of an event exceeding an allowable sliding distance(i.e. the first-passage probability). Designers need information about the probability that the structure is damaged for the first time for not only design but also maintenance and operation of the structure. Therefore, in this study, a time-dependent reliability design method based on a stochastic process is developed to evaluate the first-passage probability of caisson sliding. Caisson sliding can be formulated by the Poisson spike process because both occurrence time and intensity of severe waves causing caisson sliding are random processes. The occurrence rate of severe waves is expressed as a function of the distribution function of sliding distance and mean occurrence rate of severe waves. These values simulated by a performance-based design method are expressed as multivariate regression functions of design variables. As a result, because the distribution function of sliding distance and the mean occurrence rate of severe waves are expressed as functions of significant wave height, caisson width, and water depth, the first-passage probability of caisson sliding can be easily evaluated.

Determination of Design Basis for a Storage System for Spent Fuel in Korea (국내 사용후핵연료 저장시스템의 설계기준 설정 인자 고찰)

  • Yoon, Jeong-Hyoun;Lee, Eun-Yong;Woo, Sang-In;Kim, Tae-Man
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.9 no.2
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    • pp.113-119
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    • 2011
  • Safe operation and maintenance of engineered dry storage systems for spent fuel from nuclear power plants basically depends on adequately adopted design requirements. The most important design target of the system are those which provide the necessary assurances that spent fuel can be received, handled, stored and retrieved without undue risk to health and safety of workers and the public. To achieve these objectives, the design of the system incorporates features to remove spent fuel residual heat, to provide for radiation protection, and to maintain containment over the lifespan of the system as specified in the design specifications. The features also provide for all possible anticipated operational occurrences and design basis events in accordance with the design basis as guided by the designated regulations. The general performance requirements of a projected storage system are introduced in this paper. The storage system is designed to store fuel assemblies in associated with designated regulatory requirements. Small increases/decreases in maximum burnup can be adjusted with cooling time. These variations are compensated for by a corresponding small site-specific increase/decrease in the design basis-cooling period, as long as the maximum heat load and radioactivity of loaded fuel assemblies are met. Generic design basis events considered for the storage system are summarized. Shielding and radiological requirements along with mechanical and structural are derived in this study.

Design and Implementation of an Adaptive User Interface for Home Network Environments (홈 네트워크 환경을 위한 적응형 사용자 인터페이스 설계 및 구현)

  • Jung, Jae-Hwan;Jang, Hyun-Su;Ko, Kwang-Sun;Kim, Gu-Su;Eom, Young-Ik
    • The KIPS Transactions:PartB
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    • v.15B no.1
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    • pp.37-44
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    • 2008
  • With the growing proliferation of mobile computing devices, several industrial and academic research groups have a vigorous studying to remote control for various appliances with mobile devices such as Notebooks, PDAs, and Smartphones in home network environments. We can utilize the good points of mobile devices such as portability and usability so that we can remote control and manage the mobile devices connected on home networks anytime, anywhere. However, mobile devices use different languages. Therefore, they cause some problems because their interfaces and the methods of operation are different each other. To solve these problems, there are two consideration. First, we may be solved development of the user interface and difficulty of maintenance in order to control various heterogeneous devices. Second, we may provide the user interface which is dynamically adapting user's preferences and device characteristics. To satisfy these considerations, we describe the design of an adaptive user interface for home network environments using the UIML (User Interface Markup Language) based on XML (eXtensible Markup Language) and the profile information of the user and device. Therefore, we present several implementation examples that show how the framework can form the basis of prototypical applications.

An Exploratory Study on the "Trust" Operational Scheme for Income Security and Asset Management for People with Developmental Disabilities in Adulthood (성인기 발달장애인의 소득보장과 재산관리를 위한 「신탁」 운영방안에 대한 탐색적 연구)

  • Kim, Seong-Cheon;Kang, Ji-Hyun
    • 재활복지
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    • v.21 no.2
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    • pp.29-62
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    • 2017
  • The purpose of this study is to find out the main operational scheme of the "financial planning" and "the trust" for people with developmental disabilities as a means of property protecting and managing for them. The results are as follows; Regarding to "Financial planning", it is necessary to establish a measure to meet the financial needs for people with developmental disabilities in future plan; Issues to be taken care of in the point of financial planning include plan for the maintenance and use of property for their independent life; and public and private resources and support for the disabled. Obstacles are lack of national awareness of the financial planning for the disabled. In relation to the contents of the "trust" of people with developmental disabilities, the principles of operation are assuring universality, publicness, stability, self-decision making, and individuality; operating system is a mixture of public and private; subjects of target are people with developmental disabilities with no parents or caring family as well as income. The required support is a supervisory system for the secure management of asset to entrusted institutions; the decision support system for people with developmental disabilities; maintaining the qualification of government receipt of public assistance for those who do not redeem up to a certain amount of personal property utilizing the trust system.

Economic analysis of integrated data analysis at variety marine protocols (다양한 해양 프로토콜의 분류 및 통합 데이터를 분석한 독립서버에 대한 경제적 분석)

  • Jang, Hyun-Young;Jang, Jong-Wook
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2016.10a
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    • pp.243-246
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    • 2016
  • Data transfer technique is one of the key elements of the IT infrastructure, in accordance with each environment and function, using some kind of protocol. Using the three protocols such as WCDMA, AIS, and TRS at sea IT industry. so It uses three protocols saw has a problem that the operation of each protocol-specific server. so server maintenance costs increase and sea Device Manager has been placed in a situation which operates to develop each of the protocol-specific analysis program. The reason of the protocol is divided into three, marine equipment (lighthouses, buoys, light buoy) manufacturing companies and the date of manufacture, such as, communication environment (distance, communication speed) because such is wrong all, trying to unify this and enormous cost and time is a situation that can not be the exchange occurred when. So in the Ministry of Maritime Affairs and Fisheries, the number of frequency of use is low, communication performance is seeking to refrain from Kure each local organizations and companies the use of low TRS protocol. his paper is intended to conduct research on the basis of the actual data to analyze whether the method is how economical to store a single DB by analyzing other types of protocols. This reduces the shortage of marine IT industry, even a little, shall helps reduce administrative costs.

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Consistency Analysis between Predicted and Measured PM10 and NO2 Air Quality During Environmental Impact Assessment of Linear Construction Projects (선형사업에 대한 환경영향평가 시 대기질 예측치와 실측치의 정합성 분석 - PM10과 NO2를 중심으로 -)

  • No Ol, Lim;Hyun Chan, Sung;Sun Jeong, Kim;Ji Young, Kim;Seong Woo, Jeon
    • Journal of Environmental Impact Assessment
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    • v.31 no.6
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    • pp.378-387
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    • 2022
  • Since air pollution has become a global issue to be managed, the Republic of Korea (ROC) is protecting air quality by predicting the air condition before a construction project starts through EnvironmentalImpact Assessment (EIA) and measuring the air condition afterwards the construction project ends through Post-environmental Impact Assessment (PEIA). The aim of this study consists on verifying the predicted and measured concentration data and analyzing their consistency in order to deduce improvement directions. Linear EIA projects which the investigation during operation period have been concluded between years 2017 and 2019 were used. As a result, the following improvement directions were suggested: reduction of EIA air quality standards, strengthen the management of projects with construction duration longer than 5 years, incorporation of first or second quarter (winter or spring) into the investigation period, consideration of construction equipment or conditions for better prediction. The strength of this study is that we arranged and utilized EIA predicted and PEIA measured data to understand the present EIA procedure and made meaningful suggestions through the consistency analysis contributing to air quality maintenance and investigation methodology enhancement.

Surgical Treatment of Osteoporotic Vertebral Compression Fractures at Thoraco-Lumbar Levels: Only Pedicle Screw Constructs with Polymethylmethacrylate Augmentation (흉요추부 골다공증성 척추 압박 골절의 수술적 치료: 골시멘트 보강술을 이용한 척추경 나사 고정)

  • Jun, Deuk Soo;Baik, Jong-Min;Park, Ji Hyeon
    • Journal of the Korean Orthopaedic Association
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    • v.54 no.4
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    • pp.327-335
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    • 2019
  • Purpose: To investigate the radiological efficacy of polymethylmethacrylate (PMMA) augmentation of pedicle screw operation in osteoporotic vertebral compression fractures (OVCF) patients. Materials and Methods: Twenty OVCF patients, who underwent only posterior fusion using pedicle screws with PMMA augmentation, were included in the study. The mean follow-up period was 15.6 months. The demographic data, bone mineral density (BMD), fusion segments, number of pedicle screws, and amount of PMMA were reviewed as medical records. To analyze the radiological outcomes, the radiologic parameters were measured as the time serial follow-up (preoperation, immediately postoperation, postoperation 6 weeks, 3, 6 months, and 1 year follow-up). Results: A total of 20 patients were examined (16 females [80.0%]; mean age, 69.1±8.9 years). The average BMD was -2.5±0.9 g/cm2. The average cement volume per vertebral body was 6.3 ml. The mean preoperative Cobb angle of focal kyphosis was 32.7°±7.0° and was improved significantly to 8.7°±6.9° postoperatively (p<0.001), with maintenance of the correction at the serial follow-up, postoperatively. The Cobb angle of instrumented kyphosis, wedge angle, and sagittal index showed similar patterns. In addition, the anterior part of fractured vertebral body height averaged 11.0±5.0 mm and was improved to 18.5±5.7 mm postoperatively (p=0.006), with maintenance of the improvement at the 3-month, 6-month, and 1-year follow-up. Conclusion: The reinforcement of pedicle screws using PMMA augmentation may be a feasible surgical technique for OVCF. Moreover, it appears to be appropriate for improving the focal thoracolumbar/lumbar kyphosis and is maintained well after surgery.