• 환경영향평가
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• 제26권6호
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• pp.479-494
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• 2017

후쿠시마 사태 이후 형성된 원전에 대한 부정적인 여론은 몇몇 국가에서 '탈원전'이라는 정책으로 표출됐다. 한국도 문재인 정부가 들어서면서 원전의 비중을 단계적으로 낮추는 에너지 정책 전환 계획을 발표했다. 이로써 기후변화와 에너지 안보라는 두 가지 문제를 동시에 해결할 주요 에너지원으로 꼽혔던 원전 사용에 제한이 발생했다. 이 연구는 원전의 단계적 폐쇄를 주요 내용으로 하는 에너지 정책 전환 이행과 기후변화체제라는 상황 속에서 2016년부터 2030년까지 한국의 최적전력구성비를 찾는 것이 목적이다. 최적전력구성비는 시간당 전력수요와 INDC를 최소비용으로 만족하는 구성비를 의미한다. 이 연구에서는 선형계획법을 통해 에너지 정책 전환을 이행하는 시나리오와 원전을 2017년 수준으로 유지하는 시나리오로 나누어 비용을 비교분석했다. 그 결과 두 시나리오 모두 풍력은 2018년부터 꾸준히 증가하는 반면 태양광은 2021년부터 경제성을 갖춰 발전량이 대폭 늘어났다. 한편 총 비용은 에너지 전환 시나리오가 약 56조원으로 원전 유지 시나리오에 비해 약 5.5조원 더 비싼 것으로 나타났다.

• 한국IT서비스학회지
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• 제19권5호
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• pp.33-47
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• 2020

In recent years, due to the demand for operating efficiency and cost reduction of industrial facilities, remote access via the Internet is expanding. the control network accelerates from network separation to network connection due to the development of IIoT (Industrial Internet of Things) technology. Transition of control network is a new opportunity, but concerns about cybersecurity are also growing. Therefore, manufacturers must reflect security compliance and standards in consideration of the Internet connection environment, and enterprises must newly recognize the connection area of the control network as a security management target. In this study, the core target of the control system security threat is defined as the network boundary, and issues regarding the security architecture configuration for the boundary and the role & responsibility of the working organization are covered. Enterprises do not integrate the design organization with the operation organization after go-live, and are not consistently reflecting security considerations from design to operation. At this point, the expansion of the control network is a big transition that calls for the establishment of a responsible organization and reinforcement of the role of the network boundary area where there is a concern about lack of management. Thus, through the organization of the facility network and the analysis of the roles between each organization, an static perspective and difference in perception were derived. In addition, standards and guidelines required for reinforcing network boundary security were studied to address essential operational standards that required the Internet connection of the control network. This study will help establish a network boundary management system that should be considered at the enterprise level in the future.

• Nutrition Research and Practice
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• 제2권2호
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• pp.121-129
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• 2008

This study was conducted to develop the NutriSonic Web Expert System for Meal Management and Nutrition Counseling with Analysis of User's Nutritive Changes of selected days and food exchange information with easy data transition. This program manipulates a food, menu and meal and search database that has been developed. Also, the system provides a function to check the user's nutritive change of selected days. Users can select a recommended general and therapeutic menu using this system. NutriSonic can analyze nutrients and e-food exchange ("e" means the food exchange data base calculated by a computer program) in menus and meals. The expert can insert and store a meal database and generate the synthetic information of age, sex and therapeutic purpose of disease. With investigation and analysis of the user's needs, the meal planning program on the internet has been continuously developed. Users are able to follow up their nutritive changes with nutrient information and ratio of 3 major energy nutrients. Also, users can download another data format like Excel files (.xls) for analysis and verify their nutrient time-series analysis. The results of analysis are presented quickly and accurately. Therefore it can be used by not only usual people, but also by dietitians and nutritionists who take charge of making a menu and experts in the field of food and nutrition. It is expected that the NutriSonic Web Expert System can be useful for nutrition education, nutrition counseling and expert meal management.

• 산업경영시스템학회지
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• 제42권2호
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• pp.69-77
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• 2019

As information technology advances, the penetration of smart devices connected to the Internet, such as smart phone and tablet PC, has rapidly expanded, and as sensor prices have fallen the Internet of Things has begun to be introduced in the industry. Today's industry is rapidly changing and evolving, requiring companies to respond to the new paradigm of business. In this situation, companies need to actively manage and maintain customer relationships in order to acquire loyal customers who bring them a high return. The purpose of this study is to suggest a method to manage customer relationship using real time IoT data including IoT product usage data, customer characteristics and transaction data. This study proposes a method of segmenting customers through RFM analysis and transition index analysis. In addition, a real-time monitoring through control charts is used to identify abnormalities in product use and suggest ways of differentiating marketing for each group. In the study, 44 samples were classified as 9 churn customers, 10 potential customers, and 25 active customers. This study suggested ways to induce active customers by providing after-sales benefit for product reuse to a group of churn customers and to promote the advantages or necessity of using the product by setting the goal of increasing the frequency of use to a group of potential customers. Finally, since the active customer group is a loyal customer, this study proposed an one-on-one marketing to improve product satisfaction.

• Journal of Animal Science and Technology
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• 제64권6호
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• pp.1013-1023
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• 2022

Body condition score (BCS) at calving is a vital indicator of the effectiveness of the beginning of lactation in dairy animals. The purpose of this study was to examine the effect of BCS at calving on milk production and transition success in dairy buffaloes. Thirty-six (36) Nili Ravi buffaloes were enrolled at 40 days of expected calving and followed through 90 days of lactation. The buffaloes were categorized into three groups according to their BCS (on a scale of 1-5 with 0.25 increments) as follows: 1) low, buffaloes with BCS ≤ 3.0; 2) medium, buffaloes with BCS 3.25-3.5; and 3) high, buffaloes with BCS ≥ 3.75. All buffaloes were fed a similar diet ad libitum. The lactation diet had increased concentrate allowance according to milk yield. The results revealed that the BCS at calving did not affect milk yield; however, fat percentage (fat%) was lower in the low-BCS group. Dry matter intake (DMI) was similar among the treatment groups, although post-calving BCS loss was greater in the high-BCS group compared to the medium- and the low-BCS groups. Similarly, the buffaloes in the high-BCS group had higher non-esterified fatty acids (NEFA) concentration compared to the low- and medium-BCS groups. No cases of metabolic disorders were observed during the study. The present results suggest that the buffaloes in the medium-BCS group appeared to perform better compared to the low- and the high-BCS groups with respect to milk fat% and blood NEFA concentration.

• 보건행정학회지
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• 제33권4호
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• pp.479-488
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• 2023

Background: By applying the suggested criteria for needs-based chronic medical care and long-term care delivery system for the elderly, the current status of delivery system was identified and regional delivery systems were categorized according to quantity and quality of delivery system. Methods: National claims data were used for this study. All claims data of medical and long-term care uses by the elderly and all claims data from long-term care hospitals and nursing homes in 2016 were analyzed to categorize the regional medical and long-term care delivery system. The current status of the delivery system with a high possibility of transition to a needs-based appropriate delivery system was identified. The necessary and actual amount of regional supply was calculated based on their needs, and the structure of delivery systems was evaluated in terms of the needs-based quality of the system. Finally, all regions were categorized into 15 types of medical and care delivery systems for the elderly. Results: Of the total 55 regions, 89.1% of regions had an oversupply of elderly medical and care services compared to the necessary supply based on their needs. However, 69.1% of regions met the criteria for less than two types of needs groups, and 21.8% of regions were identified as regions where the numbers of institutions or regions with a high possibility of transition to an appropriate delivery system were below the average levels for all four needs groups. Conclusion: In order to establish an appropriate community-based integrated elderly care system, it is necessary to analyze the characteristics of the regional delivery system categories and to plan a needs-based delivery system regionally.

• 한국콘텐츠학회논문지
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• 제20권9호
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• pp.659-671
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• 2020

중증 선천성 심장병은 환자의 삶의 질을 높이기 위해 지속적이고 전인적인 건강관리가 필요한 만성질환이다. 본 연구는 한국 중증 선천성 심장병 청소년의 건강관리 경험을 탐색하기 위하여 시도되었으며, 질적 연구방법을 적용하여 중고등학생 9명을 대상으로 심층 면담을 수행하였다. 수집된 자료를 분석한 결과, 4개의 범주와 12개의 하위 범주가 도출되었다. 중증 선천성 심장병 청소년들은 자신의 건강상태와 건강관리의 필요성에 대한 이해가 다소 부족하였다. 그러나 심장 기능, 자아정체성, 사회적 지지의 영향을 받으며 부분적인 건강관리를 실천하고 있었다. 중증 선천성 심장병 청소년들은 신체적인 제한이나 주변의 차별적인 시선에 영향을 받기도 하였지만, 질병정보 관리, 또래와의 동질성 추구, 자신의 질병에 대한 긍정적인 수용을 통해 정상화를 이루려고 노력하였다. 건강관리 프로그램에 대한 요구로는 질병지식과 정신건강 내용을 선호하였고, 청소년 캠프와 스마트폰 애플리케이션을 이용한 전달방식을 선호하였다. 본 연구결과를 바탕으로 중증 선천성 심장병 청소년의 건강한 성인기로의 전환을 도울 수 있는 건강관리 중재가 필요할 것이며, 체계적이고 장기적인 건강관리를 위한 정책적 방향에 대한 논의가 필요할 것으로 고려된다.

• 한국항해항만학회지
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• 제27권3호
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• pp.329-333
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• 2003

Study of the background and state of Osaka's waterfront space development and analysis of the functions of 22 chosen major facilities of development project reveals the following four types: amenity-oriented development, large-scale synthesis type development, renewal compound area type development, exchange communication promotion type development. Osaka bay area has served primely as the base of harbors, industry and energy, while analysis of the ongoing project has found that the city has been making a functional transition to a type of development to live up to the needs of the times, suggesting that is wise that Korea's future direction of waterfront development be oriented toward environmental-friendly development by taking advantage of low-density area's natural resources. Given the plurality and complexity of the law of coastal zone, what is needed is a legal maintenance for coastal zone's clear-cut coordinating function and for environmental-friendly development with the limitations of seaside and coastal functions in mind.

• 경영과학
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• 제15권2호
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• pp.71-81
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• 1998

ERP is a new concept which attempts to combine the applications of BRP and information technology in order to enhance the competitive positions of the firms in a rapidly changing environment. It is expected that a paradigm transition will take place which transforms the current practice of in-house development into the introduction of ERP packages. In response to this trend. ERP introduction strategies need to be investigated. This paper reports the case study of Standard Telecom Co. in successfully implementing Oracle ERP applications package. It describes the background, implementation strategy, project management, benefits, and the critical success factors of the Vanguard Project.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2004년도 춘계공동학술대회 논문집
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• pp.71-74
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• 2004

The organizations registered ISO 9000:1994 have upgraded to ISO 9001:2000 family through transition period by December, 2003. Some features of ISO 9001:2000 family are that it merged three ISO 9000 series, reduced 20 requirements to five major clauses, and focused on Plan-Do-Check-Act improvement cycle. We interviewed quality managers and staffs of 37 companies certified ISO 9001:2000 in Busan and Kyungnam provinces where most machine, metalwork, and manufacturing companies in South Korea are located. Using statistical analysis, we find out which status of firms are related with the requirements of five clauses. We also discover if there is any difference in performing the requirements depending on top managership, reasons for seeking ISO 9001:2000 certification, and ISO 9001:2000 operating period.