• Smart Structures and Systems
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• 제25권5호
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• pp.631-641
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• 2020

To meet the urgent requirements of safety surveillance from civil engineering management authorities, this study proposes a refined and efficient approach to generate full-field high-resolution panorama of construction sites using camera-amounted UAV (Unmanned Aerial Vehicle). GPS (Global Position System) information extraction for pre-registration, feature points filtering for efficient registration and optimal seaming line seeking for fusion are performed in sequence to form the full-field panorama generation framework. Advantages of the proposed method are as follows. First, GPS information can sort images for pre-registration, avoiding inefficient repeated pairwise calculations and matching. Second, the feature points are filtered according to the characteristics of the construction site images to reduce the amount of calculation. The proposed framework is validated on a road construction site and results demonstrate that it can generate an accurate and high-quality full-site panorama for the safety supervision in a much efficient manner.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권5호
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• pp.1058-1076
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• 2013

The WBAN(Wireless Body Area Network) supplies mobile convenience to our medical services. But if we have few effective control variables across this service deployment, the hidden distortions or defects of the system might threaten the lives and rights of the stakeholders. Therefore we need to increase the service credibility, to get WBAN effective. This study proposes a governance mechanism using feasible variables that are currently in use in practices in WBAN environments against medical incidents. Control variables were tested in Seoul National University hospital and related medical industries of South Korea. We assume that WBAN systems would be open based on integrating patients, medical employees and law enforcements to get smart theater operations against medical incidents by implementing proposed MJA(Multilateral Joint Analysis) model. MJA model also contributes to the convergence of computer systems and medical services by demonstrating flexible SOA(Service Oriented Architecture) dashboard of healthcare services with credibility factors in medicine. The important components in MJA model across WBAN, were found to be "Safety, Accuracy and Reliability" in priority order. Factor analysis, correlations and ANOVA were used to evaluate this model and an IT dashboard with a realization of mobile application, was used to support participants' decision-making.

• 대한안전경영과학회지
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• 제25권2호
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• pp.71-83
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• 2023

Since last year, the government has enforced the 'Act on the Punishment of Severe Accidents, Etc.' (hereafter referred to as the 'Serious Accident Punishment Act'), which punishes business owners and business managers who fail to fulfill their duty of safety measures with 'imprisonment of one year or more' and the Occupational Safety and Health Act. Based on this, various occupational safety and health policies were developed, including the operation of a system related to entrusting the work of safety managers. Despite these efforts, the effect of implementing the Severe Accident Punishment Act is a groundbreaking change in the current disaster prevention policy, which has increased by 0.02%P and 0.03‱P, respectively, from the previous year to 0.65% of the total accident rate and 1.10‱ of the death rate per 10,000 people as of 2022. As the need emerged, attention was paid to 'collaboration and governance with safety management institutions' in the 'Severe Disaster Reduction Roadmap' announced by the Ministry of Employment and Labor in November 2022. In this study, a meaningful result was derived by comparing and analyzing the industrial accident status of workplaces entrusted by "A" safety management institutions with the national average based on the industrial accident survey table, and the types of industrial accidents that occurred in consigned workplaces were selected as intensive management targets. The policy direction for industrial accident prevention was established. It is necessary to develop safety management work manuals based on the results of this study, expertise, discover best cases of risk assessment and develop guides, and educate and train consigned workers. In addition, it suggests that the government's guidance and supervision are needed to advance the professionalism of safety management entrusted tasks, and that safety management institutions should strengthen their roles and functions for preventing and reducing industrial accidents. However, due to difficulties in disclosing information of specialized safety management institutions, the limitation of the provision, collection, and viewing of research-related data to "A" specialized safety management institutions remains a limitation of the research. It seems likely that more thorough research will be conducted.

• Safety and Health at Work
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• 제8권1호
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• pp.67-71
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• 2017

Background: Job stress and job satisfaction are important factors affecting workforce productivity. This study was carried out to investigate the job stress, job satisfaction, and workforce productivity levels, to examine the effects of job stress and job satisfaction on workforce productivity, and to identify factors associated with productivity decrement among employees of an Iranian petrochemical industry. Methods: In this study, 125 randomly selected employees of an Iranian petrochemical company participated. The data were collected using the demographic questionnaire, Osipow occupational stress questionnaire to investigate the level of job stress, Job Descriptive Index to examine job satisfaction, and Hersey and Goldsmith questionnaire to investigate productivity in the study population. Results: The levels of employees' perceived job stress and job satisfaction were moderate-high and moderate, respectively. Also, their productivity was evaluated as moderate. Although the relationship between job stress and productivity indices was not statistically significant, the positive correlation between job satisfaction and productivity indices was statistically significant. The regression modeling demonstrated that productivity was significantly associated with shift schedule, the second and the third dimensions of job stress (role insufficiency and role ambiguity), and the second dimension of job satisfaction (supervision). Conclusion: Corrective measures are necessary to improve the shift work system. "Role insufficiency" and "role ambiguity" should be improved and supervisor support must be increased to reduce job stress and increase job satisfaction and productivity.

• 한국항해항만학회지
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• 제38권2호
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• pp.141-146
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• 2014

2014년 1월부터 아 태지역 Tokyo-MOU에서는 새로운 점검체제인 NIR를 도입하여 항만국통제(PSC)를 시행하고 있다. NIR의 가장 큰 특징은 기존 TF방식과 달리 회사의 안전관리수준까지 평가하여 선박의 위험도 수준을 고위험, 표준위험, 저위험 선박 등 3단계로 분류하고 그 수준에 따라 PSC 점검주기를 달리하는 것이다. 특히, 국제안전경영(ISM)코드의 안전관리체제(SMS)와 관련된 결함과 6개이상의 결함수, 출항정지이력 등은 선박의 위험도수준 평가에 큰 영향을 미치게 되었다. 이에 따라 선박과 회사들은 변화된 PSC환경에 대비하기 위하여 종전과는 다른 안전관리체제의 적절한 이행과 시스템 보장이 각별히 요구된다. 정부대행기관 및 주관청에서도 기존과는 다른 새로운 PSC 대응방안이 필요하다. 구체적으로는 선박과 회사간 유기적인 협력과 지원체제 강화, 심사주체와 객체의 변경을 통한 타성 극복, 정부대행기관에 대한 주관청의 관리감독 강화 그리고 민 관 협력체제 운영을 위한 네트워크 구축 등의 방안이 있다.

• International Journal of Aeronautical and Space Sciences
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• 제10권1호
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• pp.91-97
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• 2009

It is undertaken systematization of results of satellite and ground observation parameters characterizing a current condition and climatic variability of two selected geographical areas. One of them covers territory of Azerbaijan and another covers a wide area of Caspian See region. Average values and mean square deviations of following values are investigated: outgoing long wave radiation during a day and night (in nebulosity and cloudless). absorbed within a day of the stream of a sunlight of the system in "a terrestrial surface-atmosphere". degree of a covering by clouds of the selected areas during a day and at night, ground temperature values of air. pressure and speed of a wind. Monthly average values of corresponding parameters create a basis of suggested investigations. It has been presented features of a time course of investigated parameters for each month and year in the whole due to the continuously observations since 1982-2000. The scientific problem consists that there are no existed models which authentically would be cover the main aspects of a realities specified changes: they are identified by economic activities. growth of the population and other features of development of a human society or internal fluctuations of biogeophysical/climatic system. Possibilities of predictability of biosphere and climate changes depend on available timely supervision. adequacy of construction of appropriate models. understanding of mechanisms of direct and feedback influences in such complicated systems.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2009년도 추계 학술논문 발표대회
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• pp.213-217
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• 2009

Weather factors affect cost increases and progress management under construction. Because progress schedule is delayed by weather factors, the construction costs are increased. It is an essential element to control the progress schedule applying weather factors to the progress management. This study applies monthly working-day percentages which is estimated by databases of past weather information to RTPM system. Through do progress management in construction projects exactly, will try to minimize risk of process control that do that is to weather factors. Also, will compare calamity in safety supervision side that do that is to weather factors beforehand. Based on the factors and the expected impact of factors together with the weather data during the last 50 years in Seoul region gathered from Korea. Through it, calculated number of month working day of RCA's structural steel work. Studied way that apply to RTPM system.

• 해양환경안전학회지
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• 제28권2호
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• pp.334-345
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• 2022

「재난 및 안전관리 기본법」시행령 제3조의2에 따르면, 현행 해양사고 주관기관이 이원화되어 있다. 해양사고 주관기관이 사고 현장대응기관인 해경과 정부 부처인 해양수산부로 나뉘어져 있어 혼선이 일어날 여지가 있다. 대규모 해양사고 대응에서는 전권을 가진 전문성 있는 인사를 선임하고 권한과 책임의 명확화, 주도-지원 관계 설정의 명확화 그리고 지휘체계의 단순화를 보장한다면 효율적인 선박재난 대응이 이루어질 수 있다. 해양 선박재난 관리에서 예방-대비-대응-복구의 모든 단계가 유기적이며 일관성 있게 추진되는 것이 바람직하다. 재난상황에서 신속하고 효율적인 대응을 위해 의사결정과 지휘체계를 단순화하는 것은 중요하다. 또한 지휘체계의 구축과 의사결정이 전문성에 기반하고 독립적으로 이루어지도록 하는 것도 중요하다. 미국의 경우에는 재난의 양태와 무관하게 연방재난관리청에서 주관하고, 해안경비대(USCG)에서 ICS(Incident Command System) 혹은 UC (Unified Command) 사고관리체계를 근간으로 사령탑을 구성하면서 대응한다. 영국은 해양경비청(MCA)에서 연안경비대(HMCG)를 지휘하며 해양재난대응을 하며, 선박구난관리대표부(SOSREP)라는 해양재난의 지휘·조정 역할을 독립적으로 수행할 수 있는 전권을 가진 직책을 두고 있다. 이러한 제도를 두는 것은 유관기관들 간의 대립 등으로 재난대응이 비효율적으로 흐르는 것을 막고자 하는 취지도 있다. 우리나라도 사례로 든 외국의 경우처럼 해양선박재난대응의 표준화 및 단순화를 추구해야 한다. 이 연구에서는 새로운 대응제도에 대한 검토와 함께 법률(안) 제시가 이루어질 것이다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2009년도 추계학술대회
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• pp.276-279
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• 2009

최근 선박의 안전과 작업환경 개선을 위해 선박 자동화 시스템을 도입하고 있다. IMO에서 표준기술 및 안전관리측면의 규제를 강화하여 해상안전과 해상 화재 방지를 위하여 노력을 하고 있으나 해양사고와 선박화재는 계속 발생하고 있다. 본 논문에서는 선박의 화재에서 Robot을 이용하여 Risk에 대응하고 관리하는 연구를 하였다. Robot의 Risk대응을 위한 화재 감지 센서를 부착하고, Robot에서 장착되어 수행되는 적외선 센서, TOUCH SWITCH, 소리감지 센서, 가스 감지 센서, 빛감지 센서를 이용하여 Robot을 컨트롤 하였으며, Robot에게 Risk 대응을 지시 할 때의 소리출력 사용과 DC MOTOR의 속도와 COM SEN에 Low~High 값을 설정하여 Robot의 Risk 대응관리 동작을 설정하였다.

• 한국재난정보학회 논문집
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• 제8권2호
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• pp.119-137
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• 2012

본 연구는 서울시 도로포장의 구조적 개선을 위하여 포장관리시스템을 이용하여 도로파손 발생과 도로포장 상태를 분석하였다. 심층면접조사에서는 플랜트, 시공 및 감리 분야 실무자 의견을 통하여 서울시 도로포장 관리의 문제점을 도출하였으며, 선진 도로포장 관리 사례를 조사하여 서울시 도로포장 관리의 개선방안을 모색하였다. 주요 결론으로는 서울시 중하중과 여름철 집중호우에 대한 도로파손에 대한 대책이 필요하고 생애주기비용 분석을 통하여 획일적인 덧씌우기 공법으로 인한 도로포장의 조기파손의 문제점을 확인하였다. 설문조사결과, 실무자에 대한 교육의 강화와 아스팔트 혼합물 생산 및 시공시 보다 철저한 온도 관리의 필요성이 제기되었다.