• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.3
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• pp.35-42
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• 2019

Risk assessment and analysis for a medium-to-small sized chemical plant that manufactures a polyester resin by the process of batch-type condensation reaction was conducted using K-PSR technique which is one of the risk assessment methods used to implement the Process Safety Management System (PSM). K-PSR is a risk assessment technique developed by KOSHA to compensate for difficulties caused by the lack of infrastructure of medium-to-small sized chemical plants in the re-evaluation. To apply the K-PSR technique, the entire process of a selected chemical palnt was classified in two review sections, i.e., the condensation reaction process and the dilution/filtration process, and the potential risks of the process about these review sections were identified and classified based on the four guide-words (release, fire.explosion, process trouble, and injury). As the results of the research, refer to recommend of risk rating has been confirmed that non-destructive testing of old facilities and the preparation of LOTO procedures for the electrical equipments are necessary as specific measures to prevent the risk of release and fire.explosion. It was also shown that pressure gauges and thermometers should be installed on the hot-oil supply piping to minimize the process trouble, and exhausting hood should be installed to prevent potential injury.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.18 no.6
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• pp.41-55
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• 2023

In order to secure sustainable competitiveness of startups, business model innovation is an important task to achieve competitive advantage by transforming the various elements that make up the business model. This study conducted a multi-case analysis study on leading smart farm companies around the world using an analysis framework based on business model theory. Through this, we sought to identify business model types and their constituent elements. For this, 19 companies were selected from the list of top 10 investment startups of the year for the past three years published by Agfunder, a global investment research company specializing in AgTech. Then data collection and analysis of the company cases were conducted according to the case study protocol. As a result of the study, the business model types were analyzed into four types: large-scale centralized production model, medium-to-large local distributed production model, small-scale hyperlocal modular FaaS model, and small-scale hyperlocal turnkey solution supply model. A comparative analysis was conducted on five business model components for each type, and strategic implications were derived through this. This study is expected to contribute to improving the competitiveness of domestic smart farm startups and diversifying their strategies by identifying the business models of overseas leading companies in the smart farm field using an academic analysis framework.

• Korean journal of food and cookery science
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• v.23 no.5
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• pp.650-663
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• 2007

The purpose of this study was to identify the sanitation management items of school foodservice suppliers that require improvement, by assessing their sanitation practices with food commodities. Our field assessment was performed using a total of 20 vendors supplying agricultural products, meat products, seafoods and processed products; all were located in the Seoul and Gyeonggi areas. The assessment tool for sanitation management was composed of 93 checklist items and was used to evaluate seven different categories; the facility and environment, management of the facility and equipment, food materials management, process control, water management, personal hygiene management, and laboratory instrument management. A score of two was given for "satisfactory", one for "fair", and zero for "unsatisfactory". The overall average supplier score was 1.7/2.0 (85.8%). The score of the seafood vendors was highest at 1.9 (95.4%), while the lowest score of 1.3 (65.7%) occurred with the processed product suppliers. Among the sanitation management categories, water management was scored at 2.0, while inspection management was lowest at 1.4. The subcategories indicating needed improvements for the processed product suppliers were raw materials, storage, transport and recall. For the agricultural product suppliers it was preparation management. furthermore, one item within the laboratory instrument management category was unsatisfactory for both the agricultural and processed product suppliers. In conclusion, these results can be used to develop sanitation management procedures for suppliers, as well as by administration agencies to evaluate and guide those suppliers.

• Journal of Educational Research in Mathematics
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• v.23 no.2
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• pp.193-212
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• 2013

This paper aims to identify factors to elevate the effectiveness of a high school mathematics teacher's training program focused on the construction of test items, and to make a blueprint for the training program development of high school mathematics teachers. This study created and executed a teacher's training program, and then twice applied focus group interviews with the teachers who participated in the program. As a result, this study identifies four factors that elevate the effectiveness of a high school mathematics teacher's training program focused on the construction of test items: the structure of the training program that allows teachers to concentrate on constructing test items, the recognition and revision of their habits related to the construction of test items, the formation of a consensus among the participants, and self-reflection on the teachers' specialties in the construction of the test items.

• Journal of the Korea institute for structural maintenance and inspection
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• v.19 no.1
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• pp.13-22
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• 2015

In this study, a new RCSF (Reinforced Concrete Steel Frame) external connection method is proposed for seismic strengthening of medium-and low-rise reinforced concrete buildings. The RCSF method, proposed in this study, is capable of carrying out the seismic retrofitting construction while residents can live inside structures. The method is one of the strength design approach by retrofit which can easily increase the ultimate lateral load capacity of concrete buildings controlled by shear. The pseudo-dynamic test, designed using a existing school building in Korea, was carried out in order to verify the seismic strengthening effects of the proposed method in terms of the maximum load carrying capacity and ductility. Test results revealed that the proposed RCSF strengthening method installed in RC frame enhanced conspicuously the strength and displacement capacities, and the method can resist markedly under the large scaled earthquake intensity level.

• Journal of the Korean Association of Geographic Information Studies
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• v.11 no.2
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• pp.13-27
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• 2008

This paper aim to reorganize zoning areas for decreasing first-flush runoff contamination in a separated sewer system via suitability analysis, and to simulate the discharge pollution loads of first-flush runoff using SWMM. For these purposes, diffuse pollution, which is accumulated on a surface and first-flush runoff flow were investigated. Suitability conditions for zoning were defined using the results of these investigation and suitable zoning areas were analyzed for the each condition. AHP analysis was conducted to establish weights of the suitability conditions. The most suitable zoning areas were analyzed via overlaying weights and suitability conditions. From the result, it was noted that the most suitable zones for detached houses & apartments are location they already occupied. Some school areas analyzed were found to be suitable as commercial centers. Some zones within the area analyzed were found to be suitable for commercial zones. From results obtained from simulation, the zone re-organization showed BOD and SS concentration to reduce from 91.2% to 0.09% ans 72.74% to 0.31% respectively.

• Proceedings of the KAIS Fall Conference
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• 2010.05b
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• pp.937-940
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• 2010

21세기 정보화 세계화 사회에서 창의적이고 자율적인 인간양성을 위한 교육개혁으로 창의적 인재양성, 자기주도적 학습능력 배양이 강조되어지고 있다. 그럼에도 불구하고 제주지역 농어촌의 경우 인구 집중이 도시로 이루어지면서 농어촌의 인구가 감소되어지고 그러한 결과로 소규모 학교는 통폐합이되면서 교육여건은 악화되고 있는 실정이다. 이에 제주지역 농어촌 교육문제를 해소하여 학생들의 이농현상을 줄일 수 있으며, 창의적이고 자기주도적인 학습 능력을 배양할 수 있는 프로그램 개발의 필요성을 느끼게 되었다. 본 연구에서는 도시와 농어촌의 서로 다른 교육여건에 기반하여 교육내용을 특성화함으로써 제주지역 농어촌 학생의 창의적 문제해결력 향상을 위한 통섭적 활동 모형과 프로그램을 개발하기 위한 이론적 고찰을 하였다. 도시와 농어촌의 학력격차를 해소하기 위해서는 농어촌 학생에게 적절한 교육내용과 활동으로 재편성하여 가르칠 필요가 있다. 특히 제주도는 농촌과 어촌, 도시형이 특별히 구분되어지는 것이 아니라 하나의 통합된 생활문화의 특징을 가지고 있다. 앞으로 본 연구의 이론적 고찰을 바탕으로 제주지역 농어촌 학생들의 일상적인 생활환경에서 접하게 되는 다양한 활동 속에서 창의적으로 문제해결을 할 수 있도록 통섭적 활동 모형과 프로그램을 개발하여 적용하게 되면 학생의 역량을 강화시키고 잠재해 있는 창의적 문제해결력을 개발하여 학력향상에 기여할 수 있을 것이다.

• Korean Journal of Construction Engineering and Management
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• v.2 no.1 s.5
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• pp.98-106
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• 2001

The Ministry of Education and Human Resource Development has implemented the Construction Cost Saving Policy since 1998. The National Universities and Regional Education Committee have been required to follow the details of the Policy in constructing educational facilities in their jurisdiction. While the Policy has positive effect on construction cost saving of the entities, it has been criticized from the beginning of the Policy implementation because of its negative impact on project quality, education quality, trust in the public sector construction business, and solvent operation of the private construction companies which build the educational facilities in the entities. The research aims at investigating the pitfalls of the Policy and suggesting more reasonable approaches that can satisfy both the governmental entities and the private companies.

• Journal of the Korea Concrete Institute
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• v.27 no.2
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• pp.147-155
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• 2015

A new SRCF (Steel Reinforced Concrete Frame) external connection method for seismic strengthening of medium-and low-rise reinforced concrete buildings is reported in this paper. The SRCF method, proposed in this study, is capable of carrying out the seismic retrofitting construction while residents can live inside building. The method is one of the strength design approach by retrofit which can easily increase the ultimate lateral load capacity of concrete buildings controlled by shear. The pseudo-dynamic test, designed using a existing school building in Korea, was carried out in order to verify the seismic strengthening effects of the proposed method in terms of the maximum load carrying capacity and deformation. Test results revealed that the proposed SRCF strengthening method installed in RC frame enhanced conspicuously the strength and deformation capacities, and the method can resist markedly under the large scaled earthquake intensity level.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.25 no.5
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• pp.628-636
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• 2021

This paper contains the implementation and performance evaluation results of a system that collects environmental data at the time when the wild animal intrusion occurred at farms and then predicts future wild animal intrusions through a machine learning-based Vector Autoregression(VAR) model. To collect the data for intrusion prediction, an IoT-based hardware prototype was developed, which was installed on a small farm located near the school and simulated over a long period to generate intrusion events. The intrusion prediction service based on the implemented VAR model provides the date and time when intrusion is likely to occur over the next 30 days. In addition, the proposed system includes the function of providing real-time notifications to the farmers mobile device when wild animals intrusion occurs in the farm, and performance evaluation was conducted to confirm that the average response time was 7.89 seconds.