• Journal of Information Processing Systems
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• 제18권3호
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• pp.389-401
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• 2022

The business of Internet of Vehicles (IoV) is growing rapidly, and the large amount of data exchange has caused problems of large mobile network communication delay and large energy loss. A strategy for resource allocation of IoV communication based on mobile edge computing (MEC) is thus proposed. First, a model of the cloud-side collaborative cache and resource allocation system for the IoV is designed. Vehicles can offload tasks to MEC servers or neighboring vehicles for communication. Then, the communication model and the calculation model of IoV system are comprehensively analyzed. The optimization objective of minimizing delay and energy consumption is constructed. Finally, the on-board computing task is coded, and the optimization problem is transformed into a knapsack problem. The optimal resource allocation strategy is obtained through genetic algorithm. The simulation results based on the MATLAB platform show that: The proposed strategy offloads tasks to the MEC server or neighboring vehicles, making full use of system resources. In different situations, the energy consumption does not exceed 300 J and 180 J, with an average delay of 210 ms, effectively reducing system overhead and improving response speed.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.155.2-155
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• 2001

A heavy duty power manipulator consisting of high reduction ratio joints is usually used in heavy duty tasks. When the heavy duty power manipulator is used as the slave manipulator in the teleoperated bilateral control system, the position control performance of the slave manipulator and the system stability tend to deteriorate due to the windup phenomenon caused by actuator saturation. KAERI has developed a teleoperated bilateral control system for the study of the remote handling of a spent fuel mockup bundle, which has an enhanced bilateral control algorithm improving the position tracking performance of the slave manipulator while compensating for the windup phenomenon. In this paper, the developed bilateral control system ...

• 한국직업건강간호학회지
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• 제11권2호
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• pp.121-131
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• 2002

Objective: The purpose of this study was to determine the physical load by identifying harmfully working postures and to develop recommendations for improving the existing situation with nurses in ICU, thereby to provide the basis for development of work-related musculoskeletal preventive program. Method: Various types of tasks were recorded with a video camera to chart and analyze different postures by OWAS(Ovako Working Posture Analysing System). Collected data showed that poor postures were adopted, not only for lifting or repositoning a patient, but also for other tasks. Data Analysis: The performed activities were then divided into Nursing Intervention Classification. Altogether 128 postures were selected for analysis. Then they were classified into different OAC (OWAS Action Categories). From all the observation, unhealthy postures, for which corrective measures had to be considered immediately (i.e., 75% classified as OACII+III+IV) were found. Collected data were analyzed in terms of percentage, 2-tail Mann-Whitney U test. Result: Poor postures mainly occur during 'positioning the patient' and 'airway suctioning' in NIC. No difference was found (p=0.060) between the percentage of harmful posture adopted during the patient handling tasks and non-patient handling tasks. Conclusion: This study shows, that in the nursing profession with ICU not only occur during patient handling, but also during other activities. The OWAS method was useful in determining the physical load by locating potential activities due to harmfully working postures, providing a detailed description with analysis, and suggesting successful means to reduce postural load.

• 한국멀티미디어학회논문지
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• 제2권4호
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• pp.378-389
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• 1999

분산 실시간 시스템에서 타스크들은 여러 개의 서브 타스크들로 분할되어지고 그들의 실시간 특성들에 따라 병렬로 실행되지만, 이러한 서브 타스크들의 마감시간 분실을 최소화하면서 타스크 마감시간을 서브 타스크에 할당하는 최적의 해를 얻기란 어렵다. 본 논문에서는 주기적 타스크들의 통신시간과 수행시간을 이용해서 각 서브 타스크들의 속성에 따라 마감시간을 할당하는 알고리즘을 제시한다. 또한, 처리기들간의 통신시간을 고려한 처리기 사상 알고리즘과 서브 타스크들간의 통신시간을 개선하기 위해 동일한 처리기에 할당하는 효율적인 중복 알고리즘을 제시한다 결과적으로 FUTD(Fully connected, Unbounded Task Duplication) 알고리즘에 효율적인 실시간 특성을 적용함으로써 IPC(Inter-Processor Communication) 시간을 줄이고 유휴 처리기를 이용해서 평균 처리기 이용률을 개선하였다

• 정보관리학회지
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• 제25권1호
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• pp.129-148
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• 2008

능력중심의 사회가 도래함에 따라 사서직이 고숙련의 전문직으로 전문성강화를 하기 위하여 직무분석을 통하여 국립중앙도서관사서의 핵심직무를 도출하고, 전문사서의 유형을 개발하였다. 직무분석 결과 국립중앙도서관사서의 업무는 22개의 책무와 216개의 작업이며, 96개의 핵심업무로 구성되었다. 이를 체계적 교육과정개발을 위한 교육과정 우선순위 결정도구에 의하여 분석하고, 현장의 수요를 반영한 결과 기능별 10종, 이용대상별 2종을 제안하였다. 제안된 유형은 다음과 같다:장서개발전문사서, 분류 목록전문사서, 정보조사제공전문사서, 독서전문사서, 국제표준(ISO/TC, ISBN, ISSN, CIP)연구전문사서, DB전문가 및 시스템전문사서, 국내협력지원전문사서, 국제교류전문사서, 도서관마케팅전문사서, 교육설계전문사서, 어린이 전문사서, 장애인서비스 전문사서.

• 한국건설관리학회논문집
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• 제11권2호
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• pp.137-146
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• 2010

최근 건설 프로젝트는 대형화, 복잡화, 고층화 그리고 발주방식의 다앙화에 따라 사업 초기단계부터 설계, 입찰, 계약, 시공 유지관리의 모든 과정을 연계하는 업무의 통합관리가 중요시되고 있다. 특히, 설계와 시공단계의 시공성 분석은 프로젝트의 목표와 성능의 극대화에 필수적인 주요 업무로 인식되고 있다. 하지만, 국내 건설실무에서의 현행 시공성 분석 업무는 2D 도면과 문서를 기반으로 수행되고 있으며, 프로젝트 단계별로 분석되어야 할 업무수행 범위, 방법과 절차가 체계적이지 못하고 또한 실무자의 경험적 지식에 의존하여 생성되는 분석정보의 일관성의 유지와 축적 및 활용이 어렵고, 효율적인 업무 수행을 위한 적절한 기술이나 기법의 활용이 미비한 실정이다. 이에 븐 연구는 현재 국내 건설 산업에서 수행되고 있는 시공성 분석의 업무내용을 규명하고, 그 실무적 한계를 파악하여, 최근 전 세계적으로 건설프로젝트에 활발히 도입 및 활용되고 있는 BIM의 개념과 기술의 시공성 업무에의 적용성을 분석하였고, 현행 시공성 분석 실무에의 적용 기대효과를 제시하였다.

• 농촌지도와개발
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• 제17권3호
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• pp.527-548
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• 2010

The objective of this study is to suggest the developmental tasks for the successful fostering the Farmer's Study Group which have been guided by the agricultural extension work since 1994 in Korea. The 3,278 farmers study groups with 148,420 memberships have been organized in field of grains, cash crop, horticulture, livestock, improving living conditions, food processing and so on. Although the number of study groups have rapidly expanded, there also are tasks to be secured for their successful development in terms of (a) desirable phase of the study groups and goals of its fostering, (b) managements / administration of them, (c) long-term tasks to be reviewed. With regard to the desirable phase of the study groups and goals of its fostering, they should secure differential mission and the way of works compare to the other farmer's groups. Also, there should be consensus on the proper number of study groups to be fostered with a agricultural technical center at local level. With regard to the managements / administration of the study groups, there should be the different support, assistance and guidance according to the developmental level of the groups. For these, there should be evaluation works on the groups, and guidance manuals for the extension workers. Also extension works should facilitate the establishment of networks among groups over the counties. Finally, to establish the nationwide association in hierarchy and to make the cooperative works with similar farmer's group, doing the value-added activities rather than mere information exchange, and the introduction of capacity building programs for the extension workers are long-term tasks needed to review for the successful fostering study groups.

• 한국병원경영학회지
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• 제10권4호
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• pp.1-22
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• 2005

Quality of care and patient safety have become today's agenda for healthcare industry in worldwide. This paper describes experiences to improve quality of care and patient safety in USA and identifies some future tasks for better implementation of quality improvement efforts. The paper concludes with a discussion of the implications for Korean healthcare system.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.802-807
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• 2005

For linear projects, it has long been known that resource utilization is important in improving work efficiency. However, most existing scheduling techniques cannot satisfy the need for solving such issues. This paper presents an optimization model for solving linear scheduling problems involving resource assignment tasks. The proposed model adopts constraint programming (CP) as the searching algorithm for model formulation, and the proposed model is designed to optimize project total cost. Additionally, the concept of outsourcing resources is introduced here to improve project performance.

• Annals of Occupational and Environmental Medicine
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• 제35권
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• pp.42.1-42.4
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• 2023

ChatGPT has the potential to revolutionize occupational medicine by providing a powerful tool for analyzing data, improving communication, and increasing efficiency. It can help identify patterns and trends in workplace health and safety, act as a virtual assistant for workers, employers, and occupational health professionals, and automate certain tasks. However, caution is required due to ethical concerns, the need to maintain confidentiality, and the risk of inconsistent or inaccurate results. ChatGPT cannot replace the crucial role of the occupational health professional in the medical surveillance of workers and the analysis of data on workers' health.