• Journal of the Korean Institute of Gas
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• v.25 no.2
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• pp.52-63
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• 2021

Analysis of risky behavior factors for workers in the manufacturing industry enables effective human error prevention and systemization of an efficient safety management system. This study examines the relationship between the effects of workers' work psychology, work environment, and work deviation factors on risky behavior intentions and the effects of such risky behavior intentions on risky behaviors. Among the small and medium-sized manufacturing industries, the analysis was focused on a survey of 80 workers in the manufacturing and processing industry. Looking at the results, it was found that work psychology and work deviation had an effect on the intention of risky behavior, but the work environment factors corresponding to job satisfaction and workload did not affect the intention of risky behavior. The relationship with colleagues, the degree of satisfaction or dissatisfaction with the job, the degree of importance of the job that the worker feels, and the tightness of time to digest a large amount of work do not affect intentionally inducing dangerous work, but they do affect risky behavior. In the absence of intention, the work environment factor was found to accompany dangerous behavior.

• Korean Journal of Construction Engineering and Management
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• v.18 no.2
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• pp.38-48
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• 2017

Finding causes of workers' unsafe behaviors is important to prevent construction accidents because 80 percent of accidents occur by workers' unsafe behaviors. In this regard, this research aims to investigate possible reasons of workers' unsafe behaviors based on workers' cognitive process model using System dynamics. This study is based on two ways of workers' cognitive process which are in relation to hazard perception and failure of hazard perception. Based on existing literature, causal loops for workers' cognitive process are developed to explain workers' habituation by staying out of accidents, safety learning by experience, failure of hazard perception, and attitude change by accidents. The interactions between the developed loops provide managerial insights to reduce workers' unsafe behaviors from a safety manager's perspective including increasing the probability of workers' hazard perception through knowledge management, maintaining workers' positive attitude toward safety, and controlling first-line supervisors to eliminate workers' unsafe behavior. The research allows us to better understand the causes and solutions of workers' unsafe behaviors in workers' cognitive perspectives.

• Journal of Korean Society of Forest Science
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• v.112 no.2
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• pp.217-229
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• 2023

Forest projects often apply construction industry labor rates, without considering the demanding work conditions and labor intensity unique to forest operations, resulting in workplace issues. This study aims to analyze forest operations' characteristics and wage survey methods in other fields to establish a framework for surveying the wages of forest workers. The developed framework was tested through direct surveys conducted with all forest operation companies. Survey items included actual wages by occupation, identification and removal of outliers using quartile deviation, and occupation-based wage calculation. Results revealed that the appropriate wages for 2022 were as follows: KRW 163,376 for general workers, KRW 221,407 for special workers, KRW 250,045 for work leaders, and KRW 239,863 for wood cutters. These figures were 16.27% higher than those derived from the standard construction wage survey. The developed framework was validated by comparing the appropriate wages with both the standard construction wage survey and the forestry workers' wage. The results indicated that the wages calculated using the developed framework were 4.5% more similar to the forestry workers' wage compared with those from the standard construction wage survey. Consequently, the standard construction wage survey was deemed unsuitable for forest projects. To ensure efficient forest operations, it is imperative to conduct wage surveys using the developed framework over multiple years to accumulate sufficient data.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10b
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• pp.547-549
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• 1998

CASE도구의 일부로 제공되는 기존의 문서화 도구들은 개발자들을 위한 편리한 기능을 제공했지만, 문서화 참여자들 사이의 협동작업 및 정보교환을 효과적으로 지원해 주지 못했다. 협동작업 환경 및 정보교환 도구 지원의 미비로 인한 문서화 참여자들 사이의 의사소통 부족은 문서 사이의 불일치(Inconsistency), 누락(Incompleteness), 애매모호함(Ambiguity)을 발생시킨다. 소프트웨어 문서가 사용자 및 개발자를 위한 중요한 자료로 활용되기 위해서 협동 문서화 작업 환경의 구축과 정보 교환 도구의 지원은 필수적인 요소이다. 본 논문에서는 문서 상태와 사건을 중심으로 한 문서화 프로세스를 정의하고 문서 변경이나 삭제가 발생했을 경우, 이를 탐지하여 자동으로 개발자들에게 메시지를 보내주는 메시지 에이전트(Message Agent) 기반의 협동 문서화 작업 환경을 제안한다. 협동 문서화 작업 환경은 여러 명의 문서화 참여자들이 서로의 문서를 공유하며 작업할 수 있는 환경을 제공하며, 메시지 에이전트를 통한 메시지의 자동 전송으로 문서화 도중에 개발자가 직접 메시지를 작성하던 번거로움을 줄이고 문서의 질적인 향상을 기할 수 있는 장점이 있다.

• Proceedings of the ESK Conference
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• 1995.04a
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• pp.175-180
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• 1995

산업계를 중심으로 많은 직장에서 교대제 근무가 실시되고 있으나, 교대작업에 관한 작업시간의 단축이 요구되고 있는 실정이다. 교대제근무의 도입에 따라 직장내에서 취하는 수면과 이러한 수면후 아침 일찍 작업을 계속하는 경우도 일반화 되고 있다. 일반적으로, 수면시간은 적어도 7시간 정도 취하는 것이 이상적 이라고 일본 후생성 등에서 권장하고 있지만, 직장에 따라서는 심야 근무의 종료시간등의 문제때문에, 반드시 이러한 수면의 장려시간이 지켜지는 경우는 많지 않다. 따라서, 수면량의 부족 및 그에 따른 수면의 질적 저하가 다음날 작업시에 작업자의 심신반응에 좋지않은 영향을 미치게 될것이라는 것은 쉽게 예상할 수가 있다. 이러한 점을 배경으로, 본 연구는 신경감각작업의 대표적인 예의 하나인 열차운전에 종사하는 운전사을 대상으로 새벽에 하는 작업에 대해 전날밤에 취한 수면의 양.부가 작업시에 작업자의 자각적 피로감에 양향을 미친는 가를 사례적으로 연구하여 분석한 것이다.

• Journal of the Institute of Convergence Signal Processing
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• v.20 no.2
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• pp.91-98
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• 2019

Accidents of worker that occur in isolated places are difficult to rescue, unlike general construction accidents. There is a problem of communication limitation when an accident occurs in an isolated place. Also, it is difficult to search the accident place due to the absence of CCTV. In order to solve these problems, this paper proposes a device that combines IoT technology with a safety helmet, which must be worn in the workplace. The proposed device additionally designs and implements a real-time PPG(Photoplethysmography) sensor, body temperature sensor, accelerometer sensor and a camera sensor on the helmet. The proposed helmet system allows the user and the control center to monitor the state of the worker. In addition, when an abnormal biological signal or fall occurs to the worker, the image is transmitted to the control center. By using the proposed system, it is possible to check the status of the worker in real time, so that it has an advantage that it can cope with the accident quickly.

• Industry Promotion Research
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• v.8 no.4
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• pp.29-36
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• 2023

In order to prevent industrial accidents, this study presented a methodology to ensure that risk aggravating factors are reflected in risk assessments at manufacturing sites and demonstrated it by applying it to actual manufacturing sites. As a result of a statistical analysis of all 242,906 accidents that occurred in the manufacturing industry over the past 10 years, new workers less than 6 months old, foreign workers, older workers over 55 years old, and jobs where hands and arms are exposed to risk areas, Non-routine work performed from 9 o'clock to 12 o'clock showed a significantly high accident rate. In addition, a weighted value was applied to estimate the possibility of an accident at the risk determination stage through focus group interviews. Through the results of this study, risk weighting factors can be quantitatively reflected in risk assessment, which is meaningful in preventing accidents by evaluating the size of the identified risk closer.

• Korean Journal of Construction Engineering and Management
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• v.21 no.3
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• pp.65-75
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• 2020

In this study, the purpose of the study was to verify the relationship between the company's construction safety management system and workers' safety consciousness and safety observance behavior. A survey of 357 workers was conducted and a statistical analysis was performed using the SPSS 25.0 program. As a result, the following main results were obtained: First, it was found that supervisor's capability, inner construction safety management, construction safety education, and construction disaster evaluation have significant effects on the worker's safety consciousness. Second, it was revealed that the worker's safety consciousness had a significant positive effect on the safety observance behavior. Third, it was shown that supervisor's capability, inner construction safety management, construction safety education, and construction disaster evaluation have significant effects on safety observance behavior. In addition, this study confirmed that the management supervisor's ability to handle safety at the work site is the most important factor in safety management in order to enhance the worker's safety consciousness and safety observance behavior.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.928-931
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• 2018

고립된 해상 작업 환경에서의 작업자의 건강상태 관리와 혹시 모를 추락탐지는 작업자의 안전을 위해 매우 중요하다. 본 논문에서는 이러한 고립공간 작업자의 안전을 모니터링하기 위한 헬멧에 부착할 수 있는 IoT 시스템을 위한 알고리즘을 제안한다. 이는 장치가 작업 중에 긴급 상황인지 신속하게 판단할 수 있다. 스마트폰은 누구나 들고 다니기 때문에 사용자 환경은 스마트폰을 이용하여 적용되었다. 작업자들이 착용할 용도이기 때문에 PPG 센서는 불편하지 않도록 귀에 부착한다. PPG 센서를 단독으로 사용하여 스트레스 정도를 파악한다. 3축 가속도 센서는 헬멧에 부착되고 추락을 감지하는데 사용된다. 우리는 여러 센서와 블루투스 통신을 이용하여 발전된 센서 시스템을 만든다. 또한, 우리는 3축 가속도 샘플을 분석하고 정규화하는 알고리즘을 JAVA에서 구현하였다. 스마트 폰을 사용하는 이점은 신호 처리를 위해 별도의 마이크로프로세서(mcu)가 필요하지 않으며 내부 통신 시스템을 통해 제어 센터에 정보를 전송할 수 있다는 것이다.

• Journal of the Korea Institute of Building Construction
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• v.23 no.6
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• pp.863-873
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• 2023

This research explores the efficacy of safety vest colors at construction sites to enhance worker safety. Utilizing the Munsell color system and the Korean Standard Color Analysis program(KSCA), the study developed a prototype safety vest tailored to specific types of construction work. A safety vest with a color contrasting the site's environment significantly improves worker visibility and intuitiveness in identification, potentially reducing safety incidents. The study determined the optimal color specifications(hue, value, chroma) for safety vests in various construction roles, such as 10GY, 8, 8 for rebar placement, 8.75B, 7, 8 for Euroform, 3.75B, 2, 4 for Gangform, and 6.25BG, 5, 10 for steel erection. Feedback from construction experts on these prototypes, particularly regarding the safety vests for rebar placement and steel framework, was overwhelmingly positive(90% approval). Consequently, the proposed safety vest color scheme is deemed highly effective.