• 한국보건간호학회지
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• 제19권2호
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• pp.359-370
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• 2005

The purpose of this study is to provide basic data for prevention of VDT syndrome by confirming VDT syndrome according to the type of computer use. The subjects recruited for the research were 518 students who were in the 4, 5, 6 grades from 5 schools in Seoul. The data were collected during the period from October 8 through October 18, 2004. The results were as follows; 1. The mean value of the VDT syndrome was 1.55 (SD=.52) for the 5th graders. 2. The degrees of VDT syndrome according to the characteristics of the subjects shows higher scores for the 5th and 6th graders, boys, students with more than 4 online friends, students with a low degree of school life satisfaction, and for students with parents who had a negative attitude for their children. 3. The degree of VDT syndrome according to the type of computer use showed higher scores when the students used computers for game more than for study, more than 11 hours in a week, more than 2 hours at one time, not having any rest, in dark places, with the monitor less than 40 an distance from the eyes, sitting with their legs crossed and when the keyboard was in a higher position than their elbows. The internet absorbed group showed higher scores than the unabsorbed group. 4. There was positive correlation between the hours of computer use and VDT syndrome. Also, internet addiction and VDT syndrome had positive correlation. Therefore, each home and society needs to pay consistent attention to correct computer use by their students. Especially, schools will have to educate about computer utilization and VDT syndrome.

• International Journal of Quality Innovation
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• 제9권3호
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• pp.71-91
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• 2008

The definition of cycle time is the time from the wafer start to the wafer output. It usually takes one or two months to get the product since customer decides to produce it. The cycle time is a critical factor for customer satisfaction because it represents the response time to the market. Long cycle time reflects the ineffective investment for the capital. The cycle time is very important for foundry because long cycle time will cause customer unsatisfied and the order loss. Consequently, all of the foundries put lots of human source in the cycle time improvement. Usually, we make decisions based on the experience in the cycle time management. We have no mechanism or theory for cycle time management. We do work-in-process (WIP) management based on turn rate and standard WIP (STD WIP) set by experiences. But the experience didn't mean the optimal solution, when the situation changed, the cycle time or the standard WIP will also be changed. The experience will not always be applicable. If we only have the experience and no mechanism, management will not be work out. After interview several foundry fab managers, all of the fab can't reflect the situation. That is, all of them will have an impact period after product mix or utilization varied. In this study, we want to develop a formula for standard WIP and use statistical process control (SPC) concept to set WIP upper/lower limit level. When WIP exceed the limit level, it will trigger action plans to compensate WIP Profile. If WIP Profile balances, we don't need too much WIP. So WIP level could be reduced and cycle time also could be reduced.

• 한국융합학회논문지
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• 제6권4호
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• pp.153-159
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• 2015

우리나라의 구강보조인력 중 치과위생사 업무와 치과 근무 간호조무사의 업무가 상당히 겹쳐 있고, 진료실 내부로 치과기공사 및 병원코디네이터가 깊숙이 들어와 있어 각 직종간의 업무영역으로 인해 마찰을 빗고 있다. 그리하여 이러한 직종 간 명확한 업무의 구분과 업무범위에 대한 정책적 방안을 제시할 목적으로, 치과 병 의원에 근무하는 치과보조인력의 업무 실태에 대해서 치과위생사의 법정업무를 중심으로 한 10개의 업무를 빈도분석 및 분산분석을 이용하여 비교 제시하였다. 치과위생사의 법정 업무를 중심으로 한 10개의 업무 중 대표적인 항목 스켈링을 비교한 결과, 치과기공사가 9(75%)명, 간호조무사가 64(87.67%)명, 기타에 체크한 사람이 11(64.71%)명이 시행하고 있어, 치과위생사를 제외한 치과보조인력이 치과위생사의 법정고유 업무를 많이 시행하고 있는 것으로 나타났다. 따라서 치과의료기관이 필요한 인력을 충분히 갖추고, 구강보조인력의 역할과 업무범위에 대한 정책적 방안이 제시될 필요성이 권장된다.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2009년도 춘계 종합학술대회 논문집
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• pp.208-214
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• 2009

의학기술의 발달과 건강에 관한 관심도 증가가 투자로 이어지면서 사회 평균 수명이 늘어나게 되었고 이로 인해 노인층이 증가하게 되었다. 노인의 여가 활동으로 컴퓨터를 이용한 멀티미디어 콘텐츠 활용도가 증가함에 따라 실버 세대의 디지털 문화 정착에 대한 연구가 활발히 진행되고 있다. 본 논문에서는 이러한 노인들의 디지털 콘텐츠 활용을 위해 노인용 문자 입력 시스템을 제안한다. 문자 입력 관련 인터페이스는 전통적으로 키보드에 의존하고 있다. 하지만 노인들의 사용에 있어 많은 키들의 분산된 형태 때문에 인식에 오래 걸리게 되고 모니터와의 분산을 일으켜 집중도를 떨어뜨리는 문제점이 발생한다. 이러한 문제점을 해결하기 위해 본 논문에서는 콘솔 게임에서 자주 사용하고 있는 그립형 컨트롤러 인터페이스를 사용하였으며 이에 맞는 문자 배치 알고리즘을 개발하였다. 이를 검증하기 위해 시뮬레이터를 개발하여 20명의 노인들을 대상으로 실시한 테스트에서 그립형 인터페이스에 대한 만족도와 편리성이 증가했음을 나타내는 결론을 도출하였다.

• 정보화연구
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• 제10권4호
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• pp.423-433
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• 2013

본 연구의 목적은 정부기관에서 운영되고 있는 EA(Enterprise Architecture)를 활성화시키기 위한 실용적인 가이드라인을 제시하는 것이다. 이를 위해 공공기관에서 EA가 운영되고 있는 실태를 IT 거버넌스 관점에서 분석하고 EA 담당자의 입장에서 EA 활성화에 필요한 과제를 도출하였다. 또한 각 기관별로 차이가 있는 EA성숙도수준을 고려하여 실행업무를 비교하고 그 차이를 분석하였다. 그 결과 EA의 도입이 IT관리체계의 구축과 개선에 기여하고 있음을 알 수 있었다. 또한 EA의 성숙도가 높을수록 IT 관리체계의 개선뿐 아니라 사용자 만족도와 활용도, 그리고 업무개선 등 다른 성과도 뚜렷하게 산출됨을 알 수 있었다. 결과적으로 EA 성숙도 수준이 일정수준에 도달해야만, 즉 EA가 활성화되어야만, IT 관리체계를 개선하는 성과를 달성할 수 있으며 궁극적으로 다양한 IT 성과(사용자 만족도와 IT 활용도, 업무개선)에 도달할 수 있음을 밝혀냈다.

• 산업경영시스템학회지
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• 제42권3호
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• pp.80-88
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• 2019

Recently, automobile manufacturing companies, which are major customers of them, are requiring IATF 16949 (ISO/TS 16949) certification as a mandatory requirement to secure product quality. In particular, IATF 16949 : 2016, revised in October 2016, was reinforced product traceability requirements for production information management by lot in the production process. Therefore, small and medium-sized precision parts processing companies in the automobile industry are very difficult to survive due to quality and price competition for customers satisfaction. MES (Manufacturing Execution System) is required to solve this problem. However, small and medium sized precision parts processing enterprises are reluctant to introduce the MES which is not suitable for the manufacturing environment of them such as high cost and low utilization. Even if the system is introduced, it is difficult to operate and maintain the system because the lack of computer manpower. In this paper, we propose a method for building a lot tracking system for small and medium precision parts processing companies by reviewing relevant literature and analyzing cases. In addition, by managing the production history for each lot of the final product in the system, we will grasp the effect of reducing the quality failure cost obtained by minimizing the range of defect selection.

• 한국수산과학회지
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• 제48권2호
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• pp.187-192
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• 2015

The dietary fiber alginic acid has no nutritional value; however, it decreases the utilization of nutrients by the body and can prevent obesity, hyperlipidemia, arteriosclerosis, constipation, and colon cancer. The low-molecular-weight alginic acid polymannuronate improves serum and liver lipid metabolism by decreasing cholesterol levels in high-cholesterol groups and may be used to control high blood pressure. Previously, we showed that polymannuronate, a physiologically active agent from seaweed, has a lipid-lowering effect and preventative role in colon cancer. In addition, the differentiation of polymannuronate-treated adipocytes was inhibited, triggering decreased leptin expression. This study examined ways to increase dietary satisfaction with and improve the nutritional quality of polymannuronate using hamburger buns supplemented with polymannuronate. Twenty male Sprague-Dawley rats were divided into two groups: the control group was fed hamburger buns containing 6% gluten, while the experimental group was fed hamburger buns containing 6% gluten and 10% polymannuronate. The serum triglyceride, phospholipid, and total and free cholesterol levels of the rats in the experimental group were decreased compared with those of the controls. The serum aspartate aminotransferase activity levels did not differ between the two groups. This study demonstrates that polymannuronate has beneficial effects on lipid metabolism and may be commercially useful.

• 한국IT서비스학회지
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• 제22권4호
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• pp.111-122
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• 2023

Since the organization of civil servants has been divided and stratified according to the characteristics of the bureaucracy, it is inevitable that the organization and personnel will increase when new tasks arise. Even in the process of informatization, only the processing method was brought online while leaving the existing business processing procedures as they were, so there was no reduction in manpower through informatization. In order to maintain or upgrade the current administrative services while reducing the number of civil servants, it is inevitable to use AI technology. By using data and AI to integrate the 'powers and responsibilities assigned to the officials in charge', manpower can be reduced, and the reduced costs can be reinvested in the collection, analysis, and utilization of on-site data to further promote intelligent informatization. In this study, as a way for the government's success in intelligent informatization innovation, we proposed a 'Civil Servants-AI Collaboration Platform'. This Platform based on the civil servant proposal system as a reward system and the characteristics of intelligent informatization that are different from the informatization. By establishing a 'Civil Servants-AI Collaboration Platform', the performance evaluation system of the short-term evaluation method by superiors can be improved to a data-driven always-on evaluation method, thereby alleviating the rigid hierarchy of government organizations. In addition, through the operation of Collaboration Platform, it will become common to define and solve problems using data and AI, and the intelligence informatization of government organizations will be activated.

• 한국정보컨버전스학회논문지
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• 제5권2호
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• pp.91-99
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• 2012

본 논문에서는 정부지원 소규모 유통점포인 나들가게를 대상으로 POS(point of sale) 등의 정보시스템 도입 및 활용현황을 살펴보고, 이에 따른 PDS(POS data service) 구축에 따른 기능 요구사항 및 경영성과에 대해 논의한다. 소매 점포의 POS와 연계되어 있는 공동정보시스템은 점포의 유통정보와 외부 연계정보를 수집하여 관리하고 분석정보를 제공한다. 본 연구에서는 나들가게의 POS 활용 현황을 실태조사 결과를 활용하여 분석한다. 또한, PDS의 기능 요구 사항을 살펴보고 소규모 유통점포에서 정보시스템의 활용 방안을 고찰한다. 결론적으로, 소규모 유통점포에 POS 도입이 직접적으로 성과로 나타나지는 않지만, POS의 원활한 활용과 점포 운영에 필요한 분석정보를 PDS 분석서비스를 통해 적극적으로 활용하는 경우에 고객에게 제공되는 서비스의 품질과 만족도 향상으로 나타나 경영성과에 미치는 영향이 어느 정도 관계가 있다고 할 수 있다.

• 산업경영시스템학회지
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• 제39권4호
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• pp.60-66
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• 2016

Compound logistics is a service aimed to enhance logistics efficiency by supporting that shippers and consigners jointly use logistics facilities. Many of these services have taken place both domestically and internationally, but the joint logistics services for e-commerce have not been spread yet, since the number of the parcels that the consigners transact business is usually small. As one of meaningful ways to improve utilization of compound logistics, we propose a brokerage service for shipper and consigners based on the hybrid recommendation system using very well-known classification and clustering methods. The existing recommendation system has drawn a relatively low satisfaction as it brought about one-to-one matches between consignors and logistics vendors in that such matching constrains choice range of the users to one-to-one matching each other. However, the implemented hybrid recommendation system based brokerage agent service system can provide multiple choice options to mutual users with descending ranks, which is a result of the recommendation considering transaction preferences of the users. In addition, we applied feature selection methods in order to avoid inducing a meaningless large size recommendation model and reduce a simple model. Finally, we implemented the hybrid recommendation system based brokerage agent service system that shippers and consigners can join, which is the system having capability previously described functions such as feature selection and recommendation. As a result, it turns out that the proposed hybrid recommendation based brokerage service system showed the enhanced efficiency with respect to logistics management, compared to the existing one by reporting two round simulation results.