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- 저자 : Won-Mo GAL(Won-Mo GAL) (검색결과 33 건)
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A Study on Improvement of Distribution Facility in Wholesale Agricultural Products Market
Won-Mo Gal,Ki-Tae Kwon,Woo-Sik Lee,Eun-Mee Choi,Lee-Seung Kwon,Seung-Hwan Seong,권우택 한국유통과학회 2018 유통과학연구 Vol.16 No.2
Purpose - The purpose of this study is to investigate the effect of gamma - irradiation on the effluent from food distribution in the large agricultural and marine products market. This study will contribute to the distribution process as well as the agricultural and fishery distribution facilities. Research design, data, and methodology - In order to reduce the odor, the smell was examined in the anaerobic digestion process by irradiating gamma rays to the wastewater of mixed food discharged from a large restaurant. An odor determination panel list was constructed to determine if the odor was present in the air dilution drainage and the odor concentration was analyzed by instrumental analysis. Results - It was confirmed that the sulfur content increased gradually from 3 months. Ammonia decreased from 33.57ppm at the initial measurement to 4.12 ppm at the end of the experiment. Methane production was highest at 100kGy when exposed to gamma rays of 0-200kGy at pH 12. In other words, it is considered that gamma irradiation doses are most effective at 100kGy and are suitable for large capacity wastewater treatment facilities in terms of economic feasibility. Conclusions - In pre-treatment of compound food wastewater, gamma irradiation is most cost effective when examined at 100kGy. The economic efficiency of the pre-treatment method by gamma irradiation is much higher than the wastewater treatment in the large-scale agricultural and marine products distribution market.
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휴먼에러 사고분석을 통한 DMI프로그램개발에 관한 기초연구
갈원모 ( Won-mo Gal ),염병수 ( Byeoung-soo Yum ),권우택 ( Woo-taeg Kwon ) 대한설비관리학회 2016 대한설비관리학회지 Vol.21 No.4
With a goal to establish a human error prevention system, the Ministry of Land, Infrastructure and Transport is currently devising a countermeasure to minimize human errors by establishing a railway safety innovation plan with key contents including national R&D expansion for railway safety technology development. Rolling stocks are playing a pivotal role among Korea`s urban transportation and also as a distinct means of public transportation. However, the layout inside a train operating room, such as locations and operating methods of devices, is differently designed according to the types of rolling stocks, operational tracks, signaling methods and display installation. This leads to a failure in prompt handling of unexpected situations and, accordingly, frequent occurrence of human errors that lead to accidents. Therefore, it is becoming urgently necessary to ensure safety for railway transportation. This study was aimed at developing a DMI program through accident analysis for the purpose of human error accident prevention.
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휴먼에러 저감을 위한 도시철도 운전실 레이아웃 표준화 연구
갈원모 ( Won-mo Gal ),염병수 ( Byeoung-soo Yum ) 대한설비관리학회 2021 대한설비관리학회지 Vol.26 No.2
Currently, locomotive cabs' layout differ depending on the type of train vehicles. In order to reduce human error of drivers, systematic research including analysis of the working conditions of urban railroads in Korea and standardization measures are needed accordingly. Through the survey of 247 drivers working Seoul Metro Lines 1, 2, 3 and 4 and interview with related experts, we will identify areas of vulnerability in the driver human error. Many drivers felt uncomfortable with the distinction between the handling buttons, the distance between switches, the movement and function, and the arrangement by operation frequency, It was also able to identify difficulties in identifying the display and operation by color and symbol when handling the control device, as the viewing range and physical conditions differed.
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갈원모 ( Won Mo Gal ),손기상 ( Ki Sang Son ) 대한설비관리학회 2009 대한설비관리학회지 Vol.14 No.2
Questionnaires have been distributed to the engineers who are currently working at building construction sites. The survey result has been introduced to determine reasonable cost for safety management. Questionnaire contains items that safety managers are asked for which one is reasonable question, in the survey. Throughout this survey, rate dependant variable, amount size independent variable are established for regression analysis to derive a model. It is found that significant level. Therefore, nonlinear regression model is shown. In the study, it is considered that safety cost rate is decreased, while with amount being increased. It is analyzed how much safety cost the field managers actually uses at their construction sites, based on site and amount of each project. Respondents are limited to the field engineers who have more than five year field experience. And responding items having many errors have been removed. They are classified as shown on in table(4). The items are questioned in the range of floor level such as 10th or less, 15fl, 20fl, 25fl, 30fl, 35fl, 40fl, 50fl, 53fl, more than 50fl; buildings in one site such as less than two, 2~5bldgs, 5~10, 10~15, 15~20, 20~25, 25~30, 30~35, 35~40, for more than 40bldgs; project amount such as ten million USD, 20 mil lion USD, 30 mil lion USD, 50 mil lion USD, 100 mil lion USD, 200 mil lion USD, 300 mil lion USD, 400 mil lion USD, 500 mil lion USD, more than 500 ml lion USD. The existing statistic package program was used for extracting out the most reasonable regression equation appropriate for the rate of each project. It is shown that results from multi regressions analysis deviated from significance level and correlation ship, so that they can not be put into practical use. And, divergence shape shows that they can be reasonable as shown in table 3. Another approach general method also has been introduced to the study in order to verify the reasonability of the previous one. It is shown that the new formula that encompasses the variables of building sizes and floors can not be reasonably applied to practical field situation due to the actual cost discrepancies at sites. They are the reasons why there might be many buildings with usually more than ten stories high. Therefore, safety management cost can be considered more practical, rather than theoretical. It is thought that only project amount-based equation with r-square 98.5 and p value 0.0000 can be applied to determine safety management cost for building work. More verification using current rate system has been made in order to compare and analyze as shown in determination model of safety management cost by each project type. First, each project amount on the questionnaire survey has been used in verifying the model which is made in the study, such as 100 billion USD or less, 200 billion USD, 300 billion USD, 500 billion USD, trillion USD, 2 trillion USD, 3 trillion USD, 4 trillion USD, 5 trillion USD, 8 trillion USD. For example, rate comparison between current one and new system for such as apartment, office, hospital, mart buildings are shown in table 10 in the building work. The first questionnaire survey contains size, number of floors and buildings and project amount of apartment building, office building, in making new modes. Simple and multi regression equations have been made to verify their practical efficiency, using two apartment project cases (15, 20 stories) and one office building with 58 stories. Generally, Excel function equations have some errors when they are practically verified. But it is proved that the applicability of log functions is practical. It is analyzed that the existing rates do not satisfactorily cover needs in the actual field situation. Current rates consider only project type without consideration of independent variables of project amount, size efficiently. Some conclusions are summarized as follows: It is found that estimation model, based on the project amount rather than size as shown on the current cost rate system, can be more useful and significant, statistically and practically. Buildings such as apartment, office building and hospital, should be classified as a new group for application a new model of cost rate in accordance with occupational safety and health law. Modification on the existing rate should reflect a sense of reasonability. New models can be alternatives of the existing one.
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PSM 제도의 발전을 위한 RBPS 시스템 도입에 관한 연구
성승환 ( Seung-hwan Seong ),갈원모 ( Won-mo Gal ) 대한설비관리학회 2018 대한설비관리학회지 Vol.23 No.3
With 20 years of introduction of PSM along with changes in domestic industry, the need for improvement of the system is emerging. Based on the definition and significance of each of the eight components of RBPS, we compared and analyzed with the PSM system in order to investigate the extent to which the introduction of RBPS is effective for domestic companies in order to improve the efficiency of the PSM system. In this paper, we tried to compare and analyze the RBPS and PSM system, and implemented a focus group interview (FGI) on the PSM practitioners. In terms of improving the PSM system, we will actively review the elements of RBPS 'first pillar (Commit to process safety) to ensure that the process safety culture, process safety capability, We expect that the PSM workplace safety culture will be settled if the improvement of the system is checked to evaluate the status of the PSM site.
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