• 한국BIM학회 논문집
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• 제9권3호
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• pp.41-53
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• 2019

As a central part in smart construction, BIM has been rapidly spread in construction industry at large. However, the level of applying BIM in construction stage is still relatively lower than that in design stage due to unclear application method, inadequate design BIM model, technical faults of BIM itself, etc. Under these circumstances, public owners inevitably need to adjust the scope and pace in BIM application considering their internal support and capabilities of contractors. This study aims to suggest major BIM-applicable tasks during construction stage in the process of establishing gradual long-term and short-term introduction strategy for public apartment housing projects. Those major tasks were identified with the combination of the importance of tasks and the future benefits of BIM using IPA method. To do so, the degrees of contribution to achieving objectives in construction, current task execution, and communication requirement were investigated by internal site managers. On the other hand, the expected benefits and current level of using BIM were assessed by BIM experts. Among operational tasks by phases, design review, construction plan review, making as-built drawing, etc. were categorized as major tasks. In addition, progress control, regular meeting, master schedule development, work inspection, on-site quality check, etc. were also drawn as major tasks by management areas. The results of this study will provide the useful reference for owners concerned about the introduction of new technologies.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 추계 학술논문 발표대회
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• pp.130-131
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• 2018

The main purpose of this study is to analyze the importance of the construction work of apartment buildings. The construction work operation was divided into five major tasks, which include: Schedule Control (P'1 - P5) Construction Management (C'1 - C'5), Environmental Management (E'1 - E'3), and Quality Management. Finally, this study derived major construction execution tasks through correlation between construction work and the original index and t-test.

• 아동학회지
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• 제17권1호
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• pp.275-288
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• 1996

The purposes of this study were to investigate children's prosocial behavior by age and sex and to examine the relationship between children's prosocial moral reasoning and prosocial behavior by costs and types of tasks. The subjects were 300 3th-and 6th-graders enrolled in elementary schools in Seoul. The revised form of Prosocial Moral Dilemmas including costs and types of tasks was used. The tasks of prosocial behaviors included time-cost tasks, money-cost tasks and physical strength-cost tasks. For data analysis, the paired t-test, two-way ANOVA, and Pearson's Correlations were used. Major findings were as follows; (1)There was age difference in children's prosocial behavior. 6th-graders performed at a higher level than 3th-graders. Sex differences weren't significant. In low- and high-cost tasks and in time-, money-, and physical strength-cost tasks, there were (2) Scores on high-cost behavior tasks were higher than on low-cost tasks. (3) Children's prosocial moral reasoning was positively related to prosocial behavior; in low- and high-cost tasks, and in time-, money-, and physical strength-cost tasks.

• 대한인간공학회지
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• 제16권3호
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• pp.49-60
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• 1997

Although the tasks are being mechanized or automated today, many tasks are still performed manually in several industrial settings. Manual materials handling and improper sorking postures are known to be a major cause of low back injuries, which are one of the major problems in the economic and public health aspects. In this study, two machine repair shops of a manufacturing company in Pohang were recommended by the company health care center to investigate the potential risk factors that may cause low back injuries. Five machine repair tasks were selected from each machine repair shop, which are accountable for relatively high complaints of low back pain. The purpose of this study is to quantitatively evaluate the hazards of the tasks, and finally to recommend the improved methods and guidelines for safe work practices. In order to accomplish this goal, the questionnaire study and ergonomic evaluations were carried out and the results were analyzed. For most of the tasks under study, workers were found to be exposed to relatively high biomechanical stresses in low back, mainly due to the heaby objects handled and the improper working postures.

• 융합보안논문지
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• 제15권7호
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• pp.125-134
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• 2015

이 논문은 한반도 통일이 가시화되고 여건이 조성되어 남북한 군사통합을 추진하게 될 때 무엇을 준비하고 실행해야 하는가를 군사 과제를 중심으로 연구하는데 목적을 두었다. 현 상황에서 남북한 통일의 시기를 예단하기는 제한되나 군사적 폭력을 관리하는 군사통합은 평시부터 준비가 되어 있어야 한다. 만일 군사통합이 실패하면 통일 자체도 위태롭게 되기 때문에 실천적 측면에서 정교한 준비가 요구된다. 이 연구에서는 다음의 주제에 대한 해결방안을 제시하고자 한다. 한반도에 적합한 군사통합의 유형과 전제조건은 무엇인가? 남북한 군사통합 추진 시 군사적 과제는 무엇인가? 이 중 핵심과제와 중요과제는 무엇이고 실천적 측면에서 어떻게 준비되어야 하는가?

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 춘계 학술논문 발표대회
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• pp.165-166
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• 2018

The main focus of this study is the analysis of the importance of the planning work of apartment housing projects. Group the detailed work of the facility into five major tasks, categorize each into five major categories, organize the construction plans (P1 through P 6), name the plans (C4), and analyze the quality of the environmental management plans (E1 through E 4) Finally, this study derived major planning tasks from the correlation between planning and cost metrics and from the T-test.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2004년도 학술대회지
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• pp.671-674
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• 2004

We propose accurate classification method of EEG signals during mental tasks. In the experimental task, the tasks of subjects show 3 major measurements; there are mathematical tasks, color decision tasks, and Chinese phrase tasks. The classifier implemented for this work is a feed-forward neural network that trained with the error back-propagation algorithm. The new BCI system is proposed by using neural network. In this system, tr e architecture of the neural network is composed of three layers with a feed-forward network, which implements the error back propagation-learning algorithm. By applying this algorithm to 4 subjects, we achieved $95{\%}$ classification rates. The results for BCI mathematical task experiments show performance better than those of the Chinese phrase tasks. The selection time of each task depends on the mental task of subjects. We expect that the proposed detection method can be a basic technology for brain-computer interface by combining with left/right hand movement or yes/no discrimination methods.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 춘계학술대회 논문집
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• pp.502-506
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• 2007

Railway accidents/incidents occur because of many reasons. Human error by the railway staff or personnel takes a major part of those reasons. In order to reduce and prevent railway accidents/incidents, appropriate measures should be developed to remove root causes induced in human error. A systematic study for analysing causes of human errors and for developing an effective management is necessary. Detailed analysis of the railway traffic signaller's tasks should be preferentially performed for this purpose. This paper introduces the results of analysis for the types and characteristics of the railway traffic signaller's tasks. As a result of the analysis, the railway traffic signaller's tasks can be decomposed into 24 tasks in total, and also be divided into the general task and the emergency task. The railway traffic signaller's tasks are characterized to require continual confirmation and observation activities, and sometimes immediate decision and action.

• 한국건설관리학회논문집
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• 제20권2호
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• pp.60-67
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• 2019

본 연구의 주목적은 공동주택 설비 시공 단계에서 수행되는 업무들을 파악하고 성과지표에 영향을 줄 수 있는 주요 시공업무를 분석하여 프로젝트의 성과에 미치는 영향을 분석하는데 있다. 국내 외 연구동향을 비롯한 선행연구와 예비 데이터 수집(pilot data), 시공업무 데이터베이스 구축을 통한 전문가 의견을 바탕으로 시공업무를 크게 5개의 주요업무로 구분하고 각각을 공정관리(P'1~P'6), 시공관리(C'1~C'5), 환경관리(E'1~E'4), 품질관리(Q'1~Q'5), 안전관리(S'1~S'5)으로 명명하였다. 그 후, 각각의 주요 업무를 세분화 시켜 총 24개의 세부 시공업무로 분류하였다. 원가 및 공기에 대한 영향을 분석하기 위해 independent t-test를 실시하였다. 프로젝트 목표 달성에 따른 중요도를 비교하여 유의도 0.05 이하에 대해 원가뿐만 아니라 공기의 성과지표에 공통적으로 영향을 미치는 구체적인 중요 공사의 시공업무를 파악하였다.

• 대한인간공학회지
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• 제21권3호
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• pp.13-24
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• 2002

Reduction and prevention of human error is one of the major interests for the enhancement of system safety and availability in Nuclear Power Plants (NPPs). As human beings have become the weak point in the system safety, a systematic evaluation on human performance during emergency situation should be performed in advance to identify the potential vulnerability of human tasks. Though the data gathering and analysis from real field is an important precondition, there were no available data in nuclear field of korea. This paper presents the result of human performance analysis on emergency tasks in NNPs. Firstly, a task analysis was performed to identify the characteristics of operator tasks during emergency condition and to classify them into a set of generic emergency tasks. Secondly, simulation data were collected and analyzed for the emergency tasks using the full scope simulator of Younggwang NPPs. The analyzed human performance information cover the event diagnosis time, the execution time of each procedural step, observation parameters, typer of irrelevant response, pattern of communication among staffs, and so on. These performance data would be used for human reliability analysis and the research of human error as technical bases.