• Proceedings of the Korean Institute of Building Construction Conference
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• 2019.05a
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• pp.123-124
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• 2019

In the labor-intensive construction site, potential threats of the musculoskeletal diseases mainly caused by various repetitive physical tasks, vulnerable environment, and the aging of the labor worker exist. However, quantitative measuring method of construction labor worker's work posture has not been improved yet. This study proposed musculoskeletal measuring method by using wearable motion recognition sensor for quantitative evaluation and analysis of working posture of construction workers. This method is expected to be used as a basic data for posture analysis and prevention construction safety accidents, as well as physical workload and labor productivity analysis by labor work type.

• Convergence Security Journal
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• v.11 no.5
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• pp.31-40
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• 2011

As new technologies emerge and threats become increasingly complex and unpredictable, security professionals who are living in the age of information face an increasingly complex array of challenges. In recent, virtually all organizations with physical and IT assets protect those assets in a variety of methods. There are physical systems to protect facilities and their contents from unlawful trespassing. It is important to note that the integration of physical and IT security is to be required: When done correctly, the integration starts with laws, strategies, policies and procedures. Integration of physical and IT security systems is done not for its own sake but in support of security policies and procedures. Significant security improvements can be made by integrating physical and IT security management without necessarily integrating physical and logical electronic security systems. Up to now, the private security industries of the Republic of Korea have been operated and developed by the separation of physical security and industrial security. However, considering the fast changing security environments, physical security companies should turn their attention to security convergence field to cope with the new trends in the security matters. At the same time, governmental supports on the improvement of various laws, regulations and policies in such a way to meet the realistic needs of the industries should be followed.

• The Korean Journal of Health Service Management
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• v.10 no.1
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• pp.93-104
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• 2016

Objectives : The purpose of this study was to identify the determinants of the long-term influence of violence on hospital nurses. Methods : Three-hundred hospital nurses were recruited in B city, South Korea. They were asked to complete a questionnaire, and 282 data- sets were included in the multiple regression analysis. Results : Subjects experienced more episodes of verbal violence than that of physical threats or physical violence. Assailants tended to be patients and their caretakers rather than internal customers. Nurses who had religion, worked in a surgical ward, and a 3-6 year career perceived a high level of violent experiences compared to their counterparts. The determinants of the long-term influence of violence were physical violence (t=-2.705, p=.007), emotion-focused coping (t=3.049, p=.003), and emotional response (t=3.611, p<.001). The model was statistically significant explaining 13.0% of the variance (F=14.981, p<.001). Conclusions : Nurse managers should help nurses who are victims of hospital violence by teaching them not to depend on emotion-focused coping and by alleviating their emotional response to violence.

• Korean Security Journal
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• no.15
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• pp.221-242
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• 2008

Protection is to maximize the protectee's physical security by minimizing the threats and minimizing the damages caused by the threats. From this point of view, the assassination case of Israel's former Premier Yitzhak Rabin who devoted himself to proceed peace process in Middle East, on November 4, 1995, gives us a lot of lessons on protection. At that time, Israeli society was chaotic with anti-Rabin and anti-government demonstrations which is against Rabin's peace process, and they openly threatened to assassinate Premier Rabin. However, Shin Bet, Israeli Protective Agency, didn't reacted against the assassination threats effectively. Also they have to try to secure friendly public to widen the width of selection in case of crisis and to secure the credibility of the organization. They have to prevent harmful activities in advance by securing wide intelligence networks to collect and analyze various protective intelligences and preparing proper protective countermeasures. Intelligence is a basic element in protection and any protective measures not supported by intelligence activities are not useful and effective. Potential attackers study their target thoroughly and make an elaborate plan before their attack. Advance team is required to conduct security measures on a basis of analysis of vulnerability and threat factors, and close protection team should be prepared for the changing situations with crisis-consciousness. Is security, 100% perfection is not possible. However, Shin Bet failed to analyze and approach to the existing threats. They forgot the fact that security environment reflects social situations. Protection agents should be conscious of the fact that today is different from yesterday. So we have to expect what is not expected when not expected.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.21 no.1
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• pp.153-166
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• 2011

Recent trends in mobile device market whose services are rapidly expanding to provide wireless internet access are drawing people's attention to mobile security. Especially, since threats to information leakage are reaching to the critical level due to the frequent interchange of important data such as personal and financial information through wireless internet, various encryption algorithms has been developed to protect them. The encryption algorithms confront the serious threats by the appearance of side channel attack (SCA) which uses the physical leakage information such as timing, and power consumption, though the their robustness to threats is theoretically verified. Against the threats of SCA, researches including the performance and development direction of SCA should precede. Among tile SCA methods, the power analysis (PA) attack overcome this misalignment problem. The conventional methods require large computational power and they do not effectively deal with the delay changes in a power trace. To overcome the limitation of the conventional methods, we proposed a novel alignment method using peak matching. By computer simulations, we show the advantages of the proposed method compared to the conventional alignment methods.

• Health Policy and Management
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• v.26 no.4
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• pp.325-332
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• 2016

Background: Workplace violence was recognized to be social problems that might impact the health status and the job satisfaction of employee in hospitals. This study investigated the current status of violence and job stress among hospital employees working at administration and discharging department. Methods: The study subjects were 213 administrative employees working at 20 general hospitals. Data were collected by self-administered questionnaire that included information such as demographics, job-related characteristics, experience of violence, and job stress. The violence was classified as verbal violence, physical threat, and physical violence occurred by patients and caregivers. Analysis of variance, t-tests, correlation analysis, and multiple linear regression analysis were performed to examine the associated factors with job stress. Results: The levels of verbal violence, physical threat, and physical violence were $1.64{\pm}1.08$, $0.54{\pm}0.67$, and $0.04{\pm}0.17$, respectively. The score of job stress was $2.74{\pm}0.50$ and it was associated with age, existence of spouse, drinking frequency, subjective health status, disease history, night-time treatment, and public health administration career in simple analysis. In multiple linear regression analysis, the level of verbal violence experience was significantly associated with job stress (B=0.09, p=0.001). Also physical threats (B=0.18, p<0.001) and physical violence (B=0.48, p=0.008) showed positive association with job stress. Conclusion: This study attempted to examine the association between experience of violence and job stress in administrative employees at medical institutions. Levels of violence showed positive correlation with the job stress. Environment improvement to protect employee from violence and management of employees who experienced workplace violence are needed to reduce the job stress.

• Journal of Korean Clinical Nursing Research
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• v.21 no.1
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• pp.92-104
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• 2015

Purpose: The purpose of this study was to identify the types of violence and coping methods experienced by general hospital nurses. Methods: Data were collected from March 17 to 24, 2014, using self-report questionnaires. Responses from 449 nurses were analyzed. Results: The majority of the respondents experienced violence from patients, visitors, doctors, and other nurses. Verbal violence was more frequent than physical threats and physical violence. Most violence happened in ERs, followed by surgical units, and ICUs. The most frequent response by nurses after violence was an emotional response, especially 'anger' ($4.01{\pm}1.059$). Based on general characteristics, the responses were significant for professional experience (F=2.935, p=.013) and work areas (F=2.290, p=.021). The most frequent coping method for nurses after violence had occurred was to 'just complete their duties as if nothing happened'. Conclusion: Most nurses are exposed to frequent violence, but they feel defenseless. These results suggest that hospital should improve the respective organizational cultures and develop promotional programs and administrative policies to prevent violence. In addition, educational programs should be provided for nurses to improve their attitudes and abilities to cope with violence. Also, hospitals should offer sufficient support, stress reduction programs and counseling programs for nurses.

• Journal of Korean Academy of Nursing Administration
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• v.21 no.5
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• pp.489-500
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• 2015

Purpose: The purpose of this study was to identify the relation between violence experiences and the professional quality of life for hospital nurses. Methods: The participants for this study were 212 nurses in one general and three special hospitals located in the metropolitan area of Seoul, South Korea. Data gathered through October and November 2013 were analyzed using descriptive statistics and $x^2$ test. Results: Nurses experienced verbal violence, physical threats and physical violence more frequently from patients and their families rather than from doctors or peer nurses. Nurse's compassion satisfaction was low when nurses experienced violence from peer nurses. Burnout was high when nurses experienced violence from doctors, peer nurses, patients and their families. Secondary traumatic stress was affected by violence from patients and their families. The professional quality of life of nurses was associated with violence from doctors, peer nurses, patients and their families. Of the nurses, 69.3% answered that formation of a positive organizational culture would be the most effective measure for prevention of violence in hospitals. Conclusion: The formation of positive organizational culture, development of violence intervention policies and education are crucial to improve the professional quality of hospital nurses' life.

• International Journal of Computer Science & Network Security
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• v.21 no.4
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• pp.264-271
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• 2021

From an information security perspective, protecting sensitive data requires utilizing algorithms which resist theoretical attacks. However, treating an algorithm in a purely mathematical fashion or in other words abstracting away from its physical (hardware or software) implementation opens the door to various real-world security threats. In the modern age of electronics, cryptanalysis attempts to reveal secret information based on cryptosystem physical properties, rather than exploiting the theoretical weaknesses in the implemented cryptographic algorithm. The correlation power attack (CPA) is a Side-Channel Analysis attack used to reveal sensitive information based on the power leakages of a device. In this paper, we present a power Hacking technique to demonstrate how a power analysis can be exploited to reveal the secret information in AES crypto-core. In the proposed case study, we explain the main techniques that can break the security of the considered crypto-core by using CPA attack. Using two cryptographic devices, FPGA and 8051 microcontrollers, the experimental attack procedure shows that the AES hardware implementation has better resistance against power attack compared to the software one. On the other hand, we remark that the efficiency of CPA attack depends statistically on the implementation and the power model used for the power prediction.

• The Journal of Korean Academic Society of Nursing Education
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• v.28 no.3
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• pp.268-283
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• 2022

Purpose: The purpose of this study is to identify the trends related to nursing students' experiences of violence and to propose a method to build a practice environment safe from violence in nursing students' practicums. Methods: Using three databases, data on the experiences of violence in nursing student practice recorded in domestic studies from 2011 to 2022 were collected and analyzed. Results: In this study, 23 studies were analyzed, of which 19 were quantitative, four were qualitative study. In a survey conducted on the experiences of violence among nursing students during practice, verbal and physical violence, sexual harassment, and physical threats were found, and the perpetrators of the violence were patients, guardians, nurses, doctors, and hospital staffs. It was also found that the experiences of violence in nursing students' practice were negatively related to occupational identity, depression, burnout, and stress. Conclusion: It is necessary to develop an intervention program to reduce depression and increase self-esteem in order to better establish a student's career identity and to prepare a plan to build safe practices for nursing students.