• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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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.

• 융합보안논문지
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• 제11권5호
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• pp.31-40
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• 2011

시큐리티 환경이 급변하고 있다. 위협의 종류가 복합화 되고 다양한 채널과 방법으로 발생하고 있으며, 신종위협이 발생하고 있다. 또 보안기술이 비 IT산업에 활용되고 있고 정보통신기술과 스마트폰의 등장으로 비즈니스 환경이 변화하고 있다. 이에 적절하게 대응하기 위해 융합보안이 대두고 있다. 융합보안은 융합관제, 통합인증, 출력물보안 등의 형태로 진전되고 있다. 융합보안 시대를 맞이하여 물리보안 사업자도 보안환경 변화 속에서 새로운 비즈니스 기회를 찾아야 할 것이다.

• 보건의료산업학회지
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• 제10권1호
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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.

• 시큐리티연구
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• 제15호
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• pp.221-242
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• 2008

경호가 효율적이기 위해서는 단순히 눈앞에 보이는 위해를 방어하는 수준에서 벗어나, 위해의 빌미를 제공하는 원인에 대한 관심과 대응책 마련에 많은 노력을 경주해야 한다. 이러한 관점에서 1995년 11월 4일 밤, 중동에서의 평화 정착을 위해 동분서주하던 이스라엘의 라빈 수상이 암살당한 사건은 많은 경호적 교훈을 제공한다. 당시 라빈수상에 대한 암살 위협이 공공연히 자행되고 있었음을 감안하면, 이스라엘의 경호기관인 신베트의 대응은 정말로 무사안일하였다. 경호조직이나 경호관계자는 경호에 유용하고 경호활동을 지원할 수 있는 법과 제도를 정비하여 경호에 유익한 경호환경을 조성하여야 한다. 더불어 우호적인 공중을 확보하여 위기가 발생하였을 경우 대응할 수 있는 선택의 폭을 넓히고, 위기에 대응하는 경호조직의 신뢰도를 확보하여야 한다. 광범위한 정보네트워크를 구성하여 다양한 경호정보를 수집 분석하고, 위협의 평가에 기초한 경호계획을 수립함으로써 효과적이고 효율적인 경호조치로 위해행위를 사전에 예방하여야 한다. 위해기도자는 위해대상자에 대한 철저한 연구와 치밀한 계획 수립으로 위해를 기도한다. 항상 수동적으로 대응할 수밖에 없는 경호로서는 보다 주도면밀하고 체계적인 경호조치로 범행의 성공기회를 최소화하여야 한다. 또한 항상 위기의식을 갖고 우발상황에 대비한 행동지침과 상황에 따른 시나리오가 준비되고, 부서간 역할 분담과 지휘체계가 확립되어 있어야 한다.

• 정보보호학회논문지
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• 제21권1호
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• pp.153-166
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• 2011

최근 모바일 기기를 통한 인터넷 접속이 급격하게 증가함에 따라 모바일 보안의 중요성이 크게 대두되고 있다. 특히 우선 인터넷을 통해 개인정보나 금융정보와 같은 중요한 정보가 전달되는 경우 정보 노출의 우려가 크게 증가하므로 이를 방지하기 위해 다양한 암호화 알고리즘들이 개발되어 사용되고 있다. 그러나 이론적으로는 매우 안전한 것으로 알려진 암호화 알고리즘들도 암호화가 수행되는 동안 기기에서 누설되는 물리적 신호를 이용하는 부채널 공격에는 취약성을 드러내는 경우들이 많다. 이러한 문제를 해결하기 위해서는 부채널 공격에 대한 분석 빛 예상되는 성능 개선안 등에 대한 연구가 선행되어야 한다. 부채널 공격 방법 중에서 전력 분석 공격은 매우 효과적이고 강력한 방법으로 알려져 있다. 그러나 전력 분석 공격의 성능을 보장하기 위해서는 수집된 전력 신호가 잘 정렬되어야 하나, 실제 전력 신호 측정 시 측정오차나 랜덤 클럭과 같은 부채널 공격 대응 방법 등으로 인해 시간 왜곡이 빈번하게 발생하므로 전력 분석 공격 성능이 저하되는 문제가 있다. 이러한 오정렬 문제를 해결하기 위해 다양한 정렬 방법이 제안되었으나, 기존 방법들은 많은 연산량이 요구되고 한 파형 내에서 시간 지연이 변화하는 경우에 효과적으로 대처하지 못하는 단점이 있다. 이러한 문제를 극복하기 위해 본 논문에서는 기준 신호의 피크 (peak)를 이용해 신호를 정렬하는 방법을 제안한다. 모의실험을 통해, 제안하는 정렬 방법이 기존의 정렬 방법보다 전력 분석 공격에서 매우 효과적임을 보인다.

• 보건행정학회지
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• 제26권4호
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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.

• 임상간호연구
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• 제21권1호
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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.

• 간호행정학회지
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• 제21권5호
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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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• 제21권4호
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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.

• 한국간호교육학회지
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• 제28권3호
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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.