• Explosives and Blasting
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• v.23 no.1
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• pp.1-8
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• 2005

Explosive blasting performance is composed of charging, tamping and connecting performance, which need lots of power and time. Thus, operator's inconvenience and muscle load are increased by their pose. Then it's unavoidable for one to make a human error. As a result, blasting accidents and disasters of explosives may happen. So we need to have systematic study. According to their pose's changing we have OWAS, RULA, REBA, OSHA, ISI, NLE, TVAV, BLUE-X. In this article, OWAS, RULA, REBA have been evaluated. As a result of this research, it is shown that work-related musciloskeletal disorders are related to the second accident's happening.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.947-952
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• 2007

The construction project is composed of individual trade which is consists of each activity. and the performance of each activity is the lowest level to influence the project performance. Consequently, It is essential to measure and evaluate the performance of the each assignment. But the existing performance measurement have mainly focussed on company level and project level. Therefore, this paper select PPC as the indicator of a activity and, suggests the analysis method of indicators for a goal-oriented management and continuous improvement through a statistical control techniques.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.661-662
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• 2020

현대사회의 산업 현장에서 작업효율과 안전사고예방은 기업의 이익과 직결된다. 현장에서의 인력의 사용으로 인한 한계점을 가지고 있기 때문에 효율적이고 안정적으로 작업 효율을 내며 현장의 많은 안전사고를 미연에 방지하기 위해 많은 산업현장들은 4차 산업 혁명을 통해 수많은 작업들을 로봇을 이용한 자동화로 대체해 오고 있다. 단순히 짐을 옮기고 재고를 파악할 뿐인 간단한 작업임에도 불구하고 물류 피킹/분류 작업은 아직까지 인력을 사용한다. 인력을 한계를 극복하기 위해 작업 현장을 라인 트레이서를 통해 이동하고, 영상분석을 이용해 로봇 암으로 원하는 물건을 정확하게 피킹하고자 적재 하도록 설계한 '영상분석을 이용한 자동 피킹.분류시스템' 기술을 제안한다. 기존의 단순 반복 노동의 피킹/분류 작업을 수행하며 영상분석을 통해 어플리케이션을 이용하여 재고 관리또한 가능하다,

• Journal of Digital Contents Society
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• v.18 no.7
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• pp.1411-1418
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• 2017

The batch job scheduler recognizes the computational resources configured in the cluster environment and plays a role of efficiently arranging the jobs in order. In order to efficiently use the limited available resources in the cluster, it is important to analyze and characterize the characteristics of user tasks. To do this, it is important to identify various scheduling algorithms and apply them to the system environment. Most scheduler software reflects the user's work environment, from job submission to termination, as well as the state of the inventory and system status of the entire managed object. It also stores various information related to task execution, such as job scripts, environment variables, libraries, wait for tasks, start and end times. In this paper, we analyze the execution log of the scheduler such as user 's success rate, execution time, and resource size through information related to job execution through batch scheduler. Based on this, it can be used as a basis to optimize the system by increasing the utilization rate of resources.

• Journal of Digital Contents Society
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• v.16 no.5
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• pp.691-697
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• 2015

Supercomputers are used for many different areas including new product design of industries as well as state-of-the-art science and technology for large amount of computational needs. Tachyon is a 4th supercomputer built at KISTI that is a high-performance parallel computing system with 3,200 computing nodes and infrastructures. This system is currently about 10,000 users and over 170 organizations are used, the number of jobs they are performing work in batch type form through a scheduler. Also, this system logs lots of job scripts, execution environment, library, job status from the job submit to end. In this paper, we analyzed batch jobs information from Sun Grid Engine, that use as a scheduler in Tachyon system, and job executed information in Tachyon System. In particular, we distinguished the fail jobs from the all tasks that users perform and we analyzed the cause of failure. Among them, we can extracted some of jobs that can be regarded as normal jobs through the improvement in those works logged as all of fail jobs.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.74-76
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• 2013

컨테이너 터미널은 비용 절감과 생산성 향상을 위해 무인 야드 크레인을 운영하고 있다. 그러나 무인 야드 크레인이 상하차 작업을 안전하고 원활하게 수행하기 위해서는 작업자의 원격 통제가 필요하다. 상하차 작업은 다수의 야드 크레인에게 불규칙적으로 발생하며 다수의 원격 통제 작업자들은 교대로 작업 요청을 배정받아 원격 작업을 수행한다. 본 연구는 상하차 작업의 적정 서비스 수준을 고려하여 작업인력 비용과 대기비용의 합을 최소화하는 인력 산정 방법을 다루었다. 대기이론을 이용하여 원격작업 인력과 비용 요소의 변화에 따른 작업대기를 분석하였다.

• Therapeutic Science for Rehabilitation
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• v.12 no.3
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• pp.45-59
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• 2023

Objective : This study aims to identify the status of education in cognitive rehabilitation (CR) in occupational therapy departments of Korean universities/colleges and to analyze the educational needs for professional competencies. Methods : This study was conducted by distributing a questionnaire to professors. The questionnaire extracted items related to professional competencies from the results of a previous Delphi study. A total of 39 respondents from 32 (51.6%) of 62 universities/colleges were analyzed. The questionnaire analysis was conducted using Excel 2010 and SPSS 18.0 to analyze the Borich requirements and the priority of education through the Locus for focus model. Results : The priority of competency in CR was followed by "clinical reasoning ability to explain cognitive problems from the occupational performance perspective", "ability to manage insurance billing for CR", "ability to establish a CR plan based on outcome evaluation", "ability to perform occupation-oriented CR", and "ability to solve problems that occur during CR evaluation and intervention". In the Locus for focus model, items such as occupation-based cognitive assessment, intervention, and skills for documentation were high priorities for education. Conclusion : This study is expected to reflect educational competencies for CR and establish a plan for CR specialists through continuing education.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.513-516
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• 2003

With the size of construction projects getting larger and more complex, the amount of information is increased exponentially. Although there are a lot of construction companies that try to accumulate as-built information from construction sites. it has not been quite satisfactory. This is due to the lack of task information framework that can measure project performance and collect as-built information. Therefore the objective of the paper is to identify the information that can be derived from daily reports and to suggest a unit task information framework to accumulate as-built information.

• Journal of Korean Society of Forest Science
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• v.87 no.1
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• pp.82-89
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• 1998

This study was carried out to investigate working time, performance, and to predict performance that related to the factor of forest road in earth work using excavator. It was found that the real working time was 503 minutes in a day. The ratio of real working time and allowance per total working time was approximately 85.7% and 14.3% individually. The rate of soil movement(Sm) to net working time was 38.6%, and earth cutting(Ec) was 32.5%. According to performance analysis, performance of earth work using excavator($0.8m^3$) in straight part was 1.4 times larger than curve part and rock work using excavator($0.8m^3$) which had breaker in straight was 9.1 times larger than earth work using excavator($0.8m^3$) which had bucket. Performance of earth work using excavator($1.0m^3$) was 1.3 times larger than using excavator($0.8m^3$) in straight and curve part. Working performance in earth work using excavator($0.8m^3$) was influenced by the conditions of radius of curve, width of roadway, slope gradient. It is not influenced by diameter and number of root stock.

• Proceedings of the Korean Nuclear Society Conference
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• 1996.05a
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• pp.565-570
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• 1996

국내 원자력발전소에서 발생한 발전정지 사건사례를 분석한 결과로써 획득한 고장원인, 문제점, 유사한 문제점 재발방지 방안 등의 분석정보를 효과적으로 공유하기 위한 발전정지사례 분석정보 시스템을 개발하고 있다. 이 시스템의 기반구조인 관계형 데이타베이스 화일들은 입력작업 지원 분류정보, 발전정지 사례분석정보, 검색작업 지원정보 둥의 저장을 위한 세가지 화일 그룹으로 나눌 수 있다. 각 그룹의 화일간에 정의된 상관관계성을 기반으로 발전정지사례 분석정보시스템의 입력, 검색, 출력작업이 수행된다. 시스템의 사용자는 제공되는 메뉴를 사용하여 관심있는 주제별로 데이타베이스에 저장된 발전정지사례 분석정보를 검색하고 출력할 수 있다.