• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.491-491
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• 2017

K-water에서는 가뭄으로 인한 피해를 완화시키기 위해 '댐 용수공급 조정 기준'을 만들어 전국 다목적 댐들을 대상으로 시범적으로 적용하고 있다. 그런데 가뭄 기간(2008~2009)에 대하여 합천댐의 용수공급 조정기준을 이용해 저수지를 모의운영한 결과, 이 기준은 가뭄에 효과적으로 대응하지 못할 수도 있다고 판단되었고, 그에 따라 대안 기준을 제시하고자 한다. 용수공급 조정기준은 가뭄 대응 단계를 4단계(관심, 주의, 경계, 심각)로 나누고 있으며, 순단위로 각 단계별 감량공급 실행 저수량과 감량 공급량을 제시하고 있다. 이기준을 이용한 합천댐의 모의 운영 결과, 가뭄기간동안 용수공급에 실패한 경우가 발생하였다. 이는 K-water의 합천댐 용수공급 조정 기준이 가뭄 대응에 적합하지 못할 수도 있다는 것을 의미한다. 본 연구에서 제시하고자 하는 대안은 이산화 용수 감량공급 기법에서 도출된 용수 감량공급 현 저수량 기준곡선이다. 과거 심각한 가뭄이 발생한 1994년과 1995년을 대상으로 하여 기준곡선을 도출하였으며, 각 단계별 감량공급 실행 저수량은 혼합정수계획법을 이용해 결정하였다. 또한, 이 기준곡선을 이용하여 동일한 가뭄 기간 (2008~2009)에 대해 저수지 모의운영을 실시하였다. 그 결과 K-water의 합천댐 용수공급 조정 기준을 적용한 모의운영 결과에서는 용수공급 실패가 발생한데 비해 대안으로 제시하는 기준곡선을 적용한 모의운영 결과에서는 용수공급을 실패한 경우가 없었다. 이는 대안으로 제시한 기준곡선이 K-water의 기준곡선에 비해 가뭄 대응에 보다 적합한 것을 의미한다. 그 이유로는 대안으로 제시한 기준곡선의 감량공급 실행 저수량이 댐 용수공급 조정 기준의 값들보다 커 미리 감량공급이 이루어지기 때문이다.

• Journal of Korean Library and Information Science Society
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• v.49 no.4
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• pp.93-117
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• 2018

KORMARC format for holdings data is a standard for expressing and exchanging holdings information-who they have, what copies are owned, where they are held, etc. As the need of resource sharing grows, such holdings information that informs the user to the availability and the location of a bibliographic item is becoming increasingly important. However the KORMARC format for holdings data has been used much less than KORMARC for bibliographic and authority data, and has attracted little attention from Korean libraries. Under these circumstances, this study intends (1) to analyze various standards for holdings information including MARC21 format for Holdings data (update No.26) and its applications, (2) to investigate the types of holdings data and description regulations used in Korean libraries and bibliographic utilities, and (3) to suggest the revision of existing KORMARC format for holdings data.

• Convergence Security Journal
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• v.19 no.2
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• pp.137-146
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• 2019

This study seeks into an education goal and an achievement level based on investigating relationships between NCS communication abilities and communication educations for petty officer major students. Also, the study looks deep into approriate Integrated document training materials. A goal of the petty officer's communication education, which is supposed to achieve more than the average standard is improving abilities to understand documents and create documents related to the real petty officer's life. The goal of this communication study is designed with considering the petty officers' ability factors and the detailed weekly achievement goals based on characteristics of petty officers. the proper way to reach the goal of the Integrated document training materials is constructed as three step process; Presenting subject - group activity - handing in final activity report. Also, the education is designed to write evaluation forms continuously for students to keep eyes on their achievement levels. As the importance of NCS is emphasized these days, the Integrated document training materials present the ways how this education is needed to go on, and this shows ways to improve students' document writing abilities. For the last, the study mentions a proposal for further tasks on this field.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.6
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• pp.757-765
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• 2021

To carry out multi-domain operations included in the U.S. Department of Defense's national security strategy in 2018, timely data sharing between C4I systems is critical. Several studies of the Korean military have also raised the problems of interface and standardization between C4I systems, and it is necessary to establish a new plan to solve this problem. In this study, a solution to the problem was derived through case analysis that the U.S. Department of Defense has been pursuing for about 20 years to implement the data strategy after establishing the data strategy in 2003. and by establishing a data strategy suitable for the ROK military C4I system operating environment, developing a data model, selecting a standard for data sharing, and proposing a shared data development procedure, we intend to improve the data sharing capability between ROK military C4I systems.

• Journal of Korean Society of Water and Wastewater
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• v.35 no.3
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• pp.187-196
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• 2021

When evaluating the extent of the impact of water pollutants on the surrounding area, we would like to present the target level (proposal) of the quality of the environment, which is the standard for evaluation. We propose the environmental quality target level for substances that need to be applied domestically by investigating overseas cases operating the integrated environmental management system and the implications of domestic environmental pollutant management. The appropriateness of the environmental quality target level reviewed in this study was determined using data from the water quality measuring network, and future improvement measures were proposed. We review the available methodologies for setting quality objectives for the environment. It proposed the environmental quality target level for 21 substances that have domestic water pollutant emission standards and do not have environmental standards, and proposed future improvement measures. If it is necessary to add quality target-level items of the environment in the future, it is believed that expansion will be possible based on the methodology presented in this study.

• Journal of radiological science and technology
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• v.44 no.4
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• pp.367-373
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• 2021

A quality assurance of computed tomography(CT) have done seven items that were water attenuation coefficient, noise, homogeneity, spatial resolution, contrast resolution, slice thickness, artifact using by standard phantom. But there is no quality assurance items and methods for CT simulator at domestic institutions yet. Therefore the study aimed to access the CT dose index(CTDI), table tilting, image distortion, laser accuracy, table movement accuracy and CT seven items for CT simulator quality assurance. The CTDI at the center of the head phantom was 0.81 for 80 kVp, 1.55 for 100 kVp, 2.50 for 120 mm, 0.22 for 80 kVp at the center of the body phantom, 0.469 for 100 kVp, and 0.81 for 120 kVp. The table tilting was within the tolerance range of ±1.0° or less. Image distortion had 1 mm distortion in the left and right images based on the center, and the laser accuracy was measured within ±2 mm tolerance. The purpose of this study is to improve the quality assurance items suitable for the current situation in Korea in order to protect the normal tissues during the radiation treatment process and manage the CT simulator that is implemented to find the location of the tumor more clearly. In order to improve the accuracy of the CT simulator when looking at the results, the error range of each item should be small. It is hoped that the quality assurance items of the CT simulator will be improved by suggesting the quality assurance direction of the CT simulator in this study, and the results of radiation therapy will also improve.

• Journal of Digital Convergence
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• v.19 no.11
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• pp.439-444
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• 2021

In the modern society, people live in an environment while sharing a space with each other and secure their own space for the safety. As interest in "Crime Prevention Through Environmental Design (CPTED)" securing the safety of citizens from crime through environmental design is increasing, this research studies the public space design realized in public environments which is explored through the understanding of the concept of public design. Through the various case studies conducted with the concept and cases of public design, a standard for proceeding with crime prevention design has been established. The research analyzes the results of successful cases with ten extracted keywords, and finally three design solutions for crime prevention were proposed through extracted keywords. Each design solution was evaluated by 25 CPTED researchers who participated in this project with Likert's 5-point scale. Based on final evaluation results, the research will further investigate better and safe approaches and solutions for CPTED.

• Journal of the Korean Society of Marine Environment & Safety
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• v.28 no.5
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• pp.791-799
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• 2022

Among excursion and ferry boats, small boats with a length of less than 12 m are exempted from the stability standard according to the ship safety act. The boarding capacity of these small excursion and ferry boats is calculated by the seating area according to the excursion ship and ferry business act. Many excursion and ferry boats have installed deck structures such as awnings after launching. Therefore, this study attempted to analyze the cause of the accident by estimating the stability based on the case of an actual ferry boat capsizing accident. The analysis results indicated that passengers stood up to disembark at the same time while the boarding capacity was exceeded. However, even if the ferry boat complied with the boarding capacity, a possibility of capsize existed if the passengers on one side of the boat stood up. Therefore, the following were suggested to improve the safety: calculating the boarding capacity using the stability test and recommending the maximum total weight for the boarding capacity.

• International conference on construction engineering and project management
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• 2007.03a
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• pp.289-298
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• 2007

The development of construction industry has led to the increase in the number of criteria imposed by project clients for selecting contractors. For example, clients often request tenderers to satisfy various conditions such as tight programme, financial strength, managerial ability, relevant work experiences, technical strength, high workmanship standard, safety requirement, quality specification, and yet others. This trend has attracted research interests of devising various methods for helping project clients to assess contractors' bids. For example, in recent development, the Works Bureau of the Hong Kong Government has introduced two mechanisms in tender evaluation for various public work contracts, namely, the Marking Scheme effective from June 2002 and the Formula Approach effective from November 2002 [1], [2]. These approaches evaluate a contractor's tender by considering collectively its tender price and performance attributes, the latter including contractor experience, past performance, technical resources and technical content of his proposal. The tender with the highest combined price and performance score (CPPS) will be normally recommended for acceptance. It appears, however, that there is little existing research in helping contractors to identify a competition strategy that enables the contractor to offer his most competitive bid collectively taking into account his resource capacities and project client's multiple performance criteria. This paper examines the factors affecting contractor's competition strategy to compete for works in Hong Kong. The understanding about the factors will contribute to identifying effective competition strategy. The data used for the analysis were collected from Hong Kong construction industry. The research findings may provide valuable references for investigating effective competition strategies in other construction industries outside the region.

• Design Convergence Study
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• v.15 no.1
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• pp.233-246
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• 2016

Mobile health industry has been combined with IT technology and is attracting attention. The health application has been developed to provide users a healthy life style. First of all, 5 mobile health applications were selected and reviewed in terms of their service trend. It turned out that none of those applications had any emotional data but physical one. Secondly, to extract users' emotion, technological researches were sorted into different categories. And the result implied that text-based emotion recognition technology is the most suitable for the mobile health service. To implement the service, the application was designed and developed the process of emotion recognition system based on the contents of the research. One-dimension emotion model, which is the standard of classifying emotional data and social network service, was set up as a source. In last, to suggest the usage of health application has been combined with persuasive technology. As a result, this paper prospered a overall service process, concrete service scheme and a guidelines containing 15 services in accordance with the five emotions and time. It is expected to become a direction for indicators considering a psychological individual context.