• 국제학술발표논문집
• /
• The 8th International Conference on Construction Engineering and Project Management
• /
• pp.87-95
• /
• 2020

Generally, occupational safety and particularly construction safety is an intricate phenomenon. Industry professionals have devoted vital attention to enforcing Occupational Safety and Health (OHS) from the last three decades to enhance safety management in construction. Despite the efforts of the safety professionals and government agencies, current safety management still relies on manual inspections which are infrequent, time-consuming and prone to error. Extensive research has been carried out to deal with high fatality rates confronting by the construction industry. Sensor systems, visualization-based technologies, and tracking techniques have been deployed by researchers in the last decade. Recently in the construction industry, computer vision has attracted significant attention worldwide. However, the literature revealed the narrow scope of the computer vision technology for safety management, hence, broad scope research for safety monitoring is desired to attain a complete automatic job site monitoring. With this regard, the development of a broader scope computer vision-based risk recognition system for correlation detection between the construction entities is inevitable. For this purpose, a detailed analysis has been conducted and related rules which depict the correlations (positive and negative) between the construction entities were extracted. Deep learning supported Mask R-CNN algorithm is applied to train the model. As proof of concept, a prototype is developed based on real scenarios. The proposed approach is expected to enhance the effectiveness of safety inspection and reduce the encountered burden on safety managers. It is anticipated that this approach may enable a reduction in injuries and fatalities by implementing the exact relevant safety rules and will contribute to enhance the overall safety management and monitoring performance.

• 국제학술발표논문집
• /
• The 8th International Conference on Construction Engineering and Project Management
• /
• pp.188-197
• /
• 2020

Due to hazardous working environments at complex, unstructured, and dynamic construction sites, workers frequently face potential safety and health risks throughout the construction process. In this regard, addressing safety challenges remains one of the top priorities. Construction workers' ability to identify and assess risks is acquired through training, which is one of the primary key factors to determine their safety and wellbeing in hazardous working environments. As such, safety managers constantly focus on the effectiveness of the training materials provided to the workers. However, the construction workers are considerably at greater risk of injuries and fatalities compared to the workers in other industries. In this regard, further studies are required to build up a body of knowledge on the conventional safety training approaches as well as their evaluation techniques in order to boost up the adoption by the practitioners in a widespread manner. This paper provides a systematic review of the current safety training approaches and the various techniques for measuring their effectiveness. The attributes of the current safety training methods for construction workers and their evaluation techniques are identified and analyzed. Results indicated that: 1) immersive environment-based training methods are effective than the traditional safety training methods; 2) this effectiveness can be empirically supported by evaluation strategies, but the current techniques are subjective, intrusive, and error-prone. This research offers fresh opportunities to investigate the training strategies by objectively monitoring the physiological responses of construction crews. The results of this study can be used by researchers and practitioners to identify and determine optimal safety training programs that could potentially become ubiquitous in the construction industry.

• Journal of Veterinary Science
• /
• 제24권6호
• /
• pp.81.1-81.12
• /
• 2023

Background: The incidence of colic and the outcomes of colic surgery have not been surveyed in racetracks in Korea. Objectives: This study examined the incidence, mortality, and case fatality of colic and investigated the effects of age and sex after an exploratory celiotomy on the long-term survival rate (return to racing), subsequent racing performance, and career longevity. Methods: The incidence, mortality, and case fatalities of colic were examined over an 11-year period. The records of 40 horses that had undergone a celiotomy, after participating in at least one race and 75 race-matched control horses were analyzed. The racing performance and career length of the horses that returned to racing post-surgery were compared with a control group. Results: The annual incidence, fatality rate of colic, and annual mortality rate at Seoul Racecourse were 6.5, 2.8 per 100 horse-years, and 0.2 deaths cases per 100 horse-years, respectively. Of the 40 horses that underwent colic surgery, 26 (65%) returned to racing. The likelihood of returning to racing decreased with increasing age of the horses, and geldings had a lower probability of returning. While the performance in the five preoperative races between the two groups was not significantly different, a significant decrease in racing performance was observed after the surgery date (p < 0.01). Horses that underwent colic surgery did not show a significant decrease in career length. Conclusions: Surgical treatment for colic at the age of three and four years had a negative impact on the racing performance. On the other hand, there was no significant difference in career longevity between the two groups.

• 대한수의학회지
• /
• 제63권3호
• /
• pp.21.1-21.6
• /
• 2023

The increasing prevalence of toxic substance-exposure in pets in South Korea endangers the health and safety of numerous companion animals, and has become a cause for concern. Notably, the annual incidence of forensic analysis in pets has increased by more than 150% in South Korea, mainly in populous regions such as Seoul, Incheon, and Gyeonggi. In response to this growing issue, veterinary forensic examinations were conducted on 549 dogs and cats from 2019 to 2022. This study revealed the presence of various toxic substances, including pesticides, insecticides, and drugs such as analgesics, anesthetics, antidepressants, and muscle relaxants, in pets. Among the 38 different toxins identified in pets, coumatetralyl, methomyl, terbufos, and buprofezin were the most frequently detected. In this study, toxic substances for pets were identified based on the "toxic agent list for humans," developed by the National Forensic Services, because no list of toxic agents for animals currently exists and data regarding potentially toxic substances for dogs and cats is limited. This is one of the limitations of this study, and necessitates the establishment of a toxic agent list for animals. Continued monitoring and research is also recommended to reveal the incidence, causes, and solutions of toxicity in animals.

• 문화기술의 융합
• /
• 제9권5호
• /
• pp.605-611
• /
• 2023

건설 현장의 사고는 중증외상환자가 발생하기 쉬운 특성 탓에 사망으로 이어지는 비율이 매우 높다. 중증외상환자의 사망률을 줄이기 위해서는 빠른 대처가 필요하며, 빠른 사고 대처를 위해 인공지능 기술과 카메라를 이용하여 사고를 감지하는 시스템들이 개발되었다. 그러나 기존 사고 감지 시스템들은 단일 카메라만을 사용하여, 사각지대로 인해 건설 현장의 모든 사고를 감지하기에 한계가 있다. 따라서, 본 논문에서는 다수의 카메라를 사용하여 감지 사각지대를 최소화하는 시스템을 구현하였다. 구현된 시스템은 다수의 카메라의 영상에서 YOLO-pose 라이브러리로 특징점을 추출하고, 추출된 특징점을 장단기 메모리(Long Short Term Memory) 기반 순환신경망에 입력하여 사고를 감지하였다. 실험 결과, 우리는 제안하는 시스템이 복수의 카메라 사용으로 감지 사각지대를 최소화하면서도 높은 정확도를 가지는 것을 확인하였다.

• 한국산림과학회지
• /
• 제113권2호
• /
• pp.164-169
• /
• 2024

우리나라의 벌도작업은 가파르고 험한 산림지형으로 인해 기계톱을 이용한 인력작업으로 이루어지고 있다. 기계톱 벌도작업의 사망사고는 임업분야 전체 사망사고의 약 80%를 차지하며, 나무가 의도하지 않은 방향으로 쓰러지는 것이 주요원인으로 알려져있다. 이러한 이유에서 기계톱 벌도작업에서 발생하는 사고발생 위험요인을 통제하고, 이에 대한 개선방안 마련이 필수적이다. 본 연구에서는 쐐기작업 공정이 벌도 방향을 제어하는 효과와 작업 생산성에 미치는 영향을 분석하였다. 쐐기를 이용한 벌도 조건에서의 벌도 방향 오차와 작업 생산성은 각각 22°와 0.63 m³/min로 나타났으며, 쐐기를 이용하지 않은 작업에 비해 벌도방향 오차가 감소하고 작업 생산성은 낮아지는 것으로 평가되었다. 따라서 쐐기작업 공정에 따라 벌도작업의 생산성을 떨어뜨릴 수 있지만, 안전성을 높이기 위해 반드시 필요한 작업이라고 할 수 있다.

• Journal of Veterinary Science
• /
• 제25권3호
• /
• pp.38.1-38.16
• /
• 2024

Importance: Deaths due to neonatal calf diarrhea are still one of the most critical problems of cattle breeding worldwide. Determining the parameters that can predict diarrhea-related deaths in calves is especially important in terms of prognosis and treatment strategies for the disease. Objective: The primary purpose of this study was to determine mortality rates and durations, survival status, and predictive prognosis parameters based on vital signs, hematology, and blood gas analyses in neonatal diarrheic calves. Methods: The hospital automation system retrospectively obtained data from 89 neonatal diarrheic calves. Results: It was found that 42.7% (38/89) of the calves brought with the complaint of diarrhea died during hospitalization or after discharge. Short-term and long-term fatalities were a median of 9.25 hours and a median of 51.50 hours, respectively. When the data obtained from this study is evaluated, body temperature (℃), pH, base excess (mmol/L), and sodium bicarbonate (mmol/L) parameters were found to be lower, and hemoglobin (g/dL), hematocrit (%), lactate (mmol/L), chloride (mmol/L), sodium (mmol/L) and anion gap (mmol/L) parameters were found to be higher in dead calves compared to survivors. Accordingly, hypothermia, metabolic acidosis, and dehydration findings were seen as clinical conditions that should be considered. Logistic regression analysis showed that lactate (odds ratio, 1.429) and CI^- (odds ratio, 1.232) concentration were significant risk factors associated with death in calves with diarrhea. Conclusions and Relevance: According to the findings obtained from this study, the determination of lactate and Cl^- levels can be used as an adjunctive supplementary test in distinguishing calves with diarrhea with a good prognosis.

• 대한안전경영과학회지
• /
• 제25권4호
• /
• pp.57-65
• /
• 2023

The public safety management guidelines were introduced in 2019 and continue to be dedicated to advancing comprehensive measures for public safety management, with a primary focus on prioritizing the safety and well-being of the public within governmental institutions. To achieve this goal, our previous study developed a establishment procedure of risk assessment-based safety inspection system for public institutions that order construction projects and applied it to highway construction projects to evaluate its effectiveness. To enhance the practicality of the establishment procedure, it is essential to collect and analyze feedback from stakeholders regarding its performance and suitability. This study conducted a survey involving 200 participants who had experience with the establishment procedure, and performed statistical analyses to evaluate its performance and applicability. The survey results indicated that the participants reported a high level of satisfaction (scoring 4 and above on a 5-point Likert scale) in several areas: specialization of safety inspection items for different types of work (with a satisfaction rate of 65%), the evaluation process for safety ratings (64.5%), and their willingness to recommend the procedure to other institutions (75.5%). In the factor analysis with Varimax rotation, two factors emerged: (1) a specialization factor related to safety inspection items, and (2) a grading factor associated with safety evaluation results. Regression analyses of these factors unveiled significant positive relationships with improvements in safety and health performance, including the prevention of fatal accidents, heightened safety responsibility, and raised safety inspection standards. The establishment procedure of safety inspection system developed in our previous study can play a crucial role in reducing accidents resulting in fatalities and injuries at construction sites, ultimately contributing to a safer working environment for all involved parties.

• Fisheries and Aquatic Sciences
• /
• 제27권1호
• /
• pp.7-16
• /
• 2024

Fishing is considered one of the most dangerous industries alongside mining that needs further efforts to improve safety. In this study, we have investigated safety management of the gillnet fishing industry in South Korea through identifying safety level and classifying common accident types from the statements of accident com-pensation insurance payments for the last 5 years (2016-2020). There were in total 3,895 accidents and 159 fatalities with an average accident frequency of 5.34 × 10^-2 per year per fisher and an average fatality of 2.18 × 10^-3 fishers per year. We have also identified that 62.4% of the accidents occurred during Fishing (FS), and the most common and the most severe accident type is Slips and Trips (ST) and Other (OT) marine accidents such as collision and capsizing, respectively. The hand was most frequently injured. Finally, the risk assessment indicated that most of the accident types of gillnet fishing in South Korea have unacceptable levels of risks, and it is urgent to implement improved safety measures to reduce accidents during gillnet fishing operation. The findings of this study are expected to provide valuable data to create a safer working environment for fishers working on gillnet fishing vessels.

• 대한임상독성학회지
• /
• 제21권2호
• /
• pp.143-150
• /
• 2023

Purpose: This study aimed to compare the clinical features of methanol and ethylene glycol poisoning. Methods: This single-center retrospective observational study included patients with toxic alcohol poisoning who visited a regional emergency medical center. Patients with methanol and ethylene glycol poisoning from January 2004 to June 2023 were selected for the study using diagnostic codes. Results: Twenty-two patients with toxic alcohol poisoning visited during the study period, with 11 patients for each category. Compared to methanol poisoning, ethylene glycol poisoning patients were more likely to have consumed alcohol for suicidal purposes (n=4 [36.36%] vs. n=8 [72.73%]) and were more likely to be drowsy (n=0 vs. n=6 [54.55%], p=0.016). The anion gap (25.43±8.35 mmol/L vs. 13.22±6.23 mmol/L, p=0.001) and lactic acid levels (1.785 [1.3-2.785] mmol/L vs. 9.90 [4.20-11.81] mmol/L, p=0.007) were higher in ethylene glycol poisoning patients than in methanol poisoning patients. Among alcohol dehydrogenase blockers, oral ethanol was administered to 10 patients (45.45%) (n=4 [36.36%] vs. n=6 [54.55%]), and intravenous ethanol was administered to six patients (n=4 [36.36%] vs. n=2 [18.18%]). Fomepizole was administered to two patients (9.09%) each, and renal replacement therapy was non-significantly more common in patients with ethylene glycol poisoning (n=8 [72.73%] vs. n=3 [27.27%], p=0.128). Three patients had delays in diagnosis and treatment, and while there were no fatalities, one patient was left with permanent vision damage. Conclusion: Because these are uncommon types of poisoning and the clinical presentation is difficult to recognize early, healthcare providers should be familiar with toxic alcohol types and screen for them to ensure proper diagnosis and treatment.