• Journal of the Korea Convergence Society
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• v.11 no.9
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• pp.405-415
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• 2020

This cross-sectional study investigated the relationship among three factors related to patient safety activities: (1) Experiences, (2) Perceptions, and (3) Willingness to Participate. An online survey was administered to 195 people in November 2019. Participants were admitted to a general hospital within the past year. Patient safety activity experience had a significant direct effect on patient safety perception, and patient safety perception had a significant direct effect on willingness to participate. Patient safety perception thus significantly mediates the relationship between patient safety activity experience and willingness to participate. It is necessary to increase patient safety perception through publicity of and educating on patient safety activities performed by hospitals. Doing so may increase willingness to participate in patient safety activities.

• Korean Journal of Construction Engineering and Management
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• v.9 no.6
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• pp.185-193
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• 2008

As buildings become higher and larger, the possibility of accident also increases, and recurrent accidents and serious accidents are also increasing. However, it is not possible to control all the hazardous activities in construction site. Therefore, hazardous activities with higher possibility should be identified and prioritized in advance so engineers and managers can control the activities in safe manner. For this purpose, this research adopts FMEA technique, which has been widely utilized in manufacturing industry. In order to apply FMEA technique in construction safety management, the process of construction work is divided into sub-processes or activities. Then FMEA technique is applied to quantitatively analyze the importance of each activity from the safety perspective.

• International conference on construction engineering and project management
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• 2017.10a
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• pp.80-88
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• 2017

Although hazard identification is one of the most important steps of safety management process, numerous hazards remain unidentified in the construction workplace due to the dynamic environment of the construction site and the lack of available resource for visual inspection. To this end, our previous study proposed the collective sensing approach for safety hazard identification and showed the feasibility of identifying hazards by capturing collective abnormalities in workers' walking patterns. However, workers generally performed different activities during the construction task in the workplace. Thereby, an additional process that can identify the worker's walking activity is necessary to utilize the proposed hazard identification approach in real world settings. In this context, this study investigated the feasibility of identifying walking activities during construction task using Wearable Inertial Measurement Units (WIMU) attached to the worker's ankle. This study simulated the indoor masonry work for data collection and investigated the classification performance with three different machine learning algorithms (i.e., Decision Tree, Neural Network, and Support Vector Machine). The analysis results showed the feasibility of identifying worker's activities including walking activity using an ankle-attached WIMU. Moreover, the finding of this study will help to enhance the performance of activity recognition and hazard identification in construction.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.43 no.3
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• pp.188-194
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• 2010

The in vitro antioxidant activities of five melania snails in the genus Semisulcospira (S. coreana, S. forticosta, S. libertina, S. tegulata and S. gottschei) were tested in detail. The total phenolic contents of the snails ranged from $32.3{\pm}1.0$ to $87.9{\pm}6.9$ mg gallic acid equivalent (GAE)/g dry sample. The $EC_{50}$ values for the 2,2-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activities were $2.245{\pm}0.179$ mg/mL for S. coreana and $9.319{\pm}1.276$ mg/mL for S. gottschei and differed significantly (P<0.05) among the tested species. The superoxide dismutase (SOD)-like activity was highest for S. gottschei at 67.2% and lowest for S. forticosta at 4.7%. However, no significant differences among the species were recognized for the peroxynitrite anion scavenging activity. Comparing the correlation coefficients between the total phenolic contents and the DPPH radical and peroxynitrite anion scavenging activities, there was a low level relationship between each activity.

• Journal of the Korean Society of Safety
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• v.8 no.4
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• pp.82-90
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• 1993

Manual lifting, as a part of Manual Materials Handling Activities, is recognized by authorities in the field of occupational health and safety as a major hazard to industrial workers. The most important problem in applying fuzzy model of manual materials lifting is the decision of membership functions on each approaches. : Biomechanical, Physiological, Psychophysical. The primary objectives of this paper suggests to process deciding the most acceptable membership functions for establishing permissible weights on manual lifting activities using fuzzy sets.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.42 no.5
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• pp.434-441
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• 2009

This study was conducted to compare the biological activities of 7 melania snails from the family Pleuroceridae (Semisulcospira coreana, Koreanomelania nodifila, Semisulcospira forticosta, Koreoleptoxis globus ovalis, Semisulcospira libertina, Semisulcospira tegulata and Semisulcospira gottschei) in Korea. Among the 7 species, S. coreana, Korean. nodifila, S. forticosta and S. gottschei showed over 80% cytotoxicities on three cancer cell lines (SNU-1, A549 and Hep 3B) compared to the non-treatment, whereas S. libertina and S. tegulata showed almost no growth inhibition activities on the same cancer cell lines. In relation to ACE inhibition activity, only S. coreana, Korean. nodifila, and S. forticosta showed over 60% ACE inhibition activities, whereas other melania snails exhibited inhibition activities of lower than 25%. DPPH radical scavenging activities were also determined, and used to categories melania snails into three groups based on Duncan's multiple range test at P<0.05. The amount of TNF-${\alpha}$ produced by in vitro mouse peritoneal macrophage was determined according to bioactivity on L-929 cells. Three melania snails, S. coreana, Korean. nodifila and S. gottschei, exhibited 95.2%, 89.7% and 93.7% cell death(%) on L-929 cells, respectively. Glucose-6-phosphate dehydrogenase inhibitory activity was also obtained in the extract of S. coreana (31.9%) and Korean. nodifila (28.1%), showing that these extracts can be used as supplemental dietary health foods. In conclusion, we believe that the extracts of melania snails should be given due consideration in functional health food development.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.5
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• pp.372-383
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• 2019

The purpose of this study was to investigate the efforts of Knowledge, Attitude and Perceptions of Patient Safety Culture on Fall Prevention Activities in Mental Hospital Nurses. This study is a descriptive research study of 153 nurses working in Busan and Gyeongnam mental health hospitals, the data were collected from April 4 to December 31, 2018. Data were analyzed using IBM SPSS/win 24.0 program, which included t-test, ANOVA and multiple regression analysis. As a result, The attitude toward falls differed depending on subject's license or qualifications, the higher the education level. The higher the level of perceptions of patient safety culture, and the higher the work experience, the more prevention activities toward falls. The higher the perception of patient safety culture, the higher the attitude toward falls. The higher the prevention activities toward falls, the higher the attitude of falls and the perceptions of safety culture. As a result of multiple regression analysis of factors affecting Knowledge, Attitude and Perceptions of Patient Safety Culture on Fall Prevention Activities were 12.5%. Therefore, in order to promote fall prevention activities of mental hospital nurses, the knowledge needs to be expanded through continuous education. Education programs should be developed and provided to change attitudes toward falls. and At the hospital organization level, a wide range of support is required, including changes in the overall human and institutional environment for safety.

• Journal of Software Assessment and Valuation
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• v.16 no.2
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• pp.87-98
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• 2020

Recently, IoT, artificial intelligence, cloud, big data, and mobile fields have converged, leading to a new industrial era called the 4th industrial revolution. This 4th industrial revolution has been expanded to all industry area and Software has been taken as important role in this revolution. Thus Software Safety is the huge factor because Software is highly relevant to human safety in accordance with Software expansion. However this Software Safety has been focused on not organization improvement activities but current design/development, In this paper, to solve this issue, Software Safety Maturity level and relevant Process Area is defined. This study is expected to contribute to systematic software safety activities.

• KIISE Transactions on Computing Practices
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• v.23 no.6
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• pp.335-342
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• 2017

In the verification and validation procedures regarding the safety-critical software of nuclear power plants for the attainment of the requisite license from the regulatory body, it is difficult to judge the safety and dependability of the development, implementation, and validation activities through a simple reading and review of the documentation. Therefore, these activities, especially safety assurance activities, require systematic evaluation techniques to determine that software faults are acceptable level. In this study, a safety case methodology is applied in an assessment of the level and depth of the results of the development and validation of a manufacturer in its targeting of the bistable processor of a digital reactor protection system, and the evaluation results are analyzed. This study confirms the possibility of an effective supplementation of the existing safety demonstration method through the application of the employed safety case methodology.

• Journal of the Korean Society for Railway
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• v.14 no.2
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• pp.121-129
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• 2011

This paper presents the methods to acquire the Safety Certificate from Independent Safety Assessment based on the IEC or EN standard which is commonly applied to railway system for Automatic Train Protection (ATP) system in accordance with ERTMS/ETCS Level 1 system. This also shows approach methods and relative activities for project lifecycle to accomplish and ensure the system requirements of ATP system, RAMS and system quality activities. These kind of activities for quality assurance of ATP system to obtain Safety Certificate could improve the quality of domestic railway system based on On-Board system of ERTMS/ETCS Level 1 and also contribute to the growth of railway business.