• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 컴퓨터소사이어티 추계학술대회논문집
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• pp.191-194
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• 2003

In this paper, we describe the effective way of keyboard-hacking prevention and authentication system using a Smart Card. These days the securing information matters for pc-users are becoming more important as the internet business grows rapidly, and the ubiquitous computing environment is open tot everyone. Therefore, PC authentication is necessary to handle the access control to the target PC. Also, the keyboard-inputting information is necessary to be protected properly against the malicious attack. In this paper, we propose the keyboard-hacking protect systems and authentication system using a Smart Card, and show the conveniency and efficiency in the results.

• Asian Pacific Journal of Cancer Prevention
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• 제15권5호
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• pp.1895-1896
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• 2014

Cancer registries have fundamental roles in cancer surveillance, research, and health services planning, monitoring and evaluation. Many are now assuming a broader role by contributing data for health-service management, alongside data inputs from other registries and administrative data sets. These data are being integrated into de-identified databases using privacy-protecting data linkage practices. Structured pathology reporting is increasing registry access to staging and other prognostic descriptors. Registry directions need to vary, depending on local need, barriers and opportunities. Flexibility and adaptability will be essential to optimize registry contributions to cancer control.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2002년도 춘계공동학술대회
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• pp.306-311
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• 2002

This paper propose a personalized defection detection and prevention procedure based on the observation that potential defectors have tendency to take a couple of months or weeks. For this purpose, possible states of customer behavior are determined from past behavior data using SOM (Self-Organizing Map). For the evaluation of the proposed procedure, a case study has been conducted for a Korean online game site. The result demonstestes that the proposed procedure can assist defection prevention effectively and detect potential defectors without deterioration of prediction accuracy comparison to prediction by MLP. Our procedure can be applied to various service industries that can capture fluent customer behavior data such as telecommunications, internet access services, and content services, too.

• 시큐리티연구
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• 제32호
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• pp.205-225
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• 2012

본 연구는 시설보안 운영수준을 평가하여 시설보안 향상방안을 제시하는 것을 목적으로 한다. 연구목적을 위하여 보안업무가 이루어지는 특정시설을 대상으로 설문조사를 실시하였으며, 그 결과는 다음과 같다. 첫째, 보안인력은 시설보안업무의 기본이 되는 중요한 요소인데, 조사대상 시설에 보안인력이 배치되어 있지만 시설의 특성에 맞게 보안인력을 적절히 운영하지 못하는 것으로 나타났다. 둘째, 보안인력의 직무교육 훈련 수준은 비교적 적절한 것으로 나타났는데, 이는 근무교대방식과 시설에 상주하는 임직원에 대한 서비스마인드 수준, 보안인력의 근무의지 수준이 적절하게 나타난 것과 관련이 있는 것으로 볼 수 있다. 셋째, 보안상황실 운영이 잘 이루어지고 있지만 통제구역 설정과 출입자 통제 수준, 물품에 대한 통제 및 검색 수준, 차량통제 수준이 낮게 나타났다. 넷째, 보안업무를 위해 참고할 수 있는 보안업무매뉴얼의 활용수준은 보안계획서의 활용수준과 사고예방 및 대응매뉴얼의 활용 수준보다 높은 것으로 나타났다. 시설보안을 향상시키기 위해 조사결과에서 수준이 낮게 평가된 보안인력 운영과 출입통제, 물품검색, 차량통제 및 주차관리, 화재 및 각종 안전사고에 대비한 조치 등에 관한 내용을 활용도가 높게 나타난 보안업무매뉴얼에 세부적으로 명시하여 수준이 높게 나타난 교육 훈련 수준을 활용할 수 있다.

• 한국산학기술학회논문지
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• 제17권1호
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• pp.468-473
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• 2016

본 연구는 디지털 측정기(Digital Force Gauge)를 이용해 급기가압 제연구역 출입문의 개방력을 측정하여 신뢰성을 검증하는데 있다. 개방력은 제연구역에 급기가압 기류가 들어가기 전과 후의 개방 부하를 측정하였다. 측정값은 미니탭 프로그램(Minitab PGM)의 AD(Anderson Darling) 통계분석법으로 신뢰도를 검증하였다. 분석된 P값은 제연설비의 작동 전과 후의 일부 층을 제외하고는 0.05 이상을 나타낸 것으로 보아 95% 신뢰도가 있는 것으로 해석된다. 측정값의 정규분포는 제연설비의 작동 여부와 관계가 없었으며, 계측기의 정밀도는 신뢰할 수 있는 것으로 분석된다. 그리고 급기가압 제연설비의 최적설계 조건은 계측기의 정밀도와 신뢰성, 측정자의 바른 자세, 출입문의 동일한 조건 등이 주요 인자로 판단된다. 따라서 급기가압 제연구역 출입문의 개방력의 측정은 디지털 측정기가 적합한 것으로 판단된다. 또한 효과적인 개방력의 측정은 측정자의 자세 표준화, 출입문의 초기 개방력의 설정 등이 주요 변수로 작용하고 있음을 알 수 있었다.

• Asian Pacific Journal of Cancer Prevention
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• 제13권2호
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• pp.539-543
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• 2012

Background: The results of the Global School Personnel Survey (GSPS) conducted in India in 2009 are compared with 2006 GSPS to assess any change in 2009 on tobacco use and knowledge and attitudes to tobacco use, training and availability of tobacco control teaching material in schools and the existence of school tobacco control policies. Methods: GSPS is a cross sectional survey conducted twice (2006 and 2009) in entire India. A total of 180 schools were surveyed each time. Results: Of the participating school personnel, 2660 in 2006 and 2575 in 2009, about 95% were teachers and the balance administrators. In 2009, compared to 2006 the prevalence of current smoking of cigarettes (19.6% in 2006 and 10.3% in 2009) and bidis (21.5% in 2006 and 13.9% in 2009) was found to be significantly lower; the percentage of teachers receiving training on preventing youth tobacco use has significantly reduced (16.7% in 2006 and 10.1% in 2009); access of teachers to educational materials on tobacco use and how to prevent its use among youth had not increased (34.6% in 2006 and 37.8% in 2009); there was no change in policy prohibiting tobacco use among students and school personnel; however, ever use of any tobacco on school premises was significantly lower (15.6% in 2006 and 9.6% in 2009). Conclusions: The prevalence of current smoking (cigarettes/bidis) among school personnel and use of any tobacco on school premises were significantly decreased in 2009 as compared to 2006. Necessary action should be planned to increase the number of teachers trained and the availability of teaching materials on preventing youth tobacco use in order to have effective prevention of tobacco use among students.

• Asian Pacific Journal of Cancer Prevention
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• 제15권23호
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• pp.10071-10077
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• 2015

Background: Cervical cancer has become a major public health problem worldwide. Iran, like other developing countries, is facing a number of challenges in managing the disease. This qualitative study documents challenges encountered in cervical cancer preventing programs in Iran. Materials and Methods: In-depth interviews were conducted with 28 participants including eleven patients with cervical cancer, three gynecologic oncologists, five specialists in Obstetrics and Gynecology, five midwives, three health care managers and one epidemiologist in Mashhad Iran, between May and December of 2012. The sample was selected purposively until data saturation was achieved. Data credibility verified via allocated sufficient time for data collection, using member checking and peer debriefing. Data analysis was carried out using conventional content analysis approach with ATLAS. ti software. Results: Findings from data analysis demonstrated 2 major themes and 6 categories about challenges of providing cervical cancer prevention programs including: individual and social challenges (cognitive/behavioral challenges and socio/cultural challenges) and health system challenges (stewardship, financing, competency of health care providers and access to services). Each category included some subcategories. Conclusions: Managing the cervical cancer prevention programs need to include the consideration of individuals, health care providers and health system challenges. Addressing the low level of knowledge, negative attitudes, socio cultural challenges, Poor intersectional collaboration and coordination and intra-sectional management, financing and competency of health care providers are essential steps toward significantly reducing the burdens of cervical cancer.

• Asian Pacific Journal of Cancer Prevention
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• 제13권6호
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• pp.2913-2921
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• 2012

Introduction: The impact of cervical cancer prevention programs depends on persuading women to go for screening and, if needed, treatment. As part of an evaluation of a pilot project in Indonesia, qualitative research was conducted to explore the factors that influence women's decisions regarding screening and treatment and to generate practical recommendations to increase service coverage and reduce loss to follow up. Methods: Research was conducted at 7 of the 17 public health centers in Karawang District that implemented the pilot project. Interviews and focus group discussions were held with 20 women, 20 husbands, 10 doctors, 18 midwives, 3 district health officials, and 16 advocacy team members. Results: Free services and mobile outreach events encouraged women to go for screening, along with promotional efforts by community health workers, advocacy teams, and the mass media. Knowledge and perceptions were the most important barriers to screening: women were not aware of cervical cancer risks, did not know the disease was treatable, and were fatalistic. Factors facilitating treatment were social support from husbands, relatives, and friends and the encouragement and role modeling of health workers. Barriers to prompt treatment included limited access to services and the requirement for husband's consent for cryotherapy. Conclusion: As cervical cancer prevention services are scaled up throughout Indonesia, the findings suggest three strategies to expand screening coverage and ensure prompt treatment: strengthening community mobilization and advocacy activities, modifying the service delivery model to encourage a single visit approach to screening and treatment, and working to gain men's support.

• Journal of Preventive Medicine and Public Health
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• 제50권1호
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• pp.60-65
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• 2017

Objectives: We examined the prevalence of tobacco use and exposure to secondhand smoke among middle-school students in Korea using the Global Youth Tobacco Survey (GYTS) in 2013. Methods: The GYTS in Korea was conducted between July and August 2013 by the Korea Centers for Disease Control and Prevention. Data were collected using a self-administered anonymous questionnaire from a nationally representative sample of middle-school students aged 13-15 years in sampled classrooms. Results: The GYTS in Korea was completed by 4235 students aged 13-15 years in 43 middle schools. Approximately one in five of the students (17.8%) reported that they had tried cigarettes in the past, while 5.2% reported currently being cigarette smokers. Current cigarette smoking was higher in boys (7.5%) than in girls (2.6%). Of the students, 29.7% had been exposed to secondhand smoke at home, 47.4% inside enclosed public places, and 53.9% in outdoor public places. Of the current cigarette smokers, 25.7% bought their cigarettes from a store despite a law prohibiting this. Additionally, 58.0% of students noticed point-of-sale tobacco advertisements or promotions, 66.8% of current cigarette smokers wanted to stop smoking, and 70.9% of students had been taught about the dangers of tobacco use in school. Conclusions: These findings provide an opportunity to develop, implement, and evaluate a comprehensive tobacco control policy. The results suggest that youth have relatively easy access to cigarettes and are regularly exposed to secondhand smoke in public places, as well as to point-of-sale tobacco advertisements and promotions. Strict enforcement of the ban on tobacco sales to youth, expanding smoke-free areas, and advertising bans are needed to reduce tobacco use among youth.

• 전자공학회논문지
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• 제50권4호
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• pp.97-107
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• 2013

수중무선통신시스템은 AUV간 수중 무선통신, 해양환경 모니터링, 양식장 관리, 항만 감시, 자원 탐사 및 개발, 지형 및 지질 조사 등 다양한 산업에 활용 가능하다. 하지만 수중 무선 통신은 지상 무선 통신과는 달리 물이 가지고 있는 매질의 특성때문에 전력손실, 주위 잡음 및 인위 잡음, 멀티패스 등으로 인한 높은 에러율 그리고 긴 전송지연 등과 같은 요소들을 고려하여야 한다. 따라서 본 논문에서는 ALOHA 기반의 Media Access Control(MAC) 프로토콜과 CSMA/CA 기반의 MAC 프로토콜을 혼합하여 수중 환경에 적합한 MAC 프로토콜을 제안한다. 성능을 평가하기 위해 수학적 분석 모델을 제시하고, 구현을 통해 기존 MAC 프로토콜과 비교함으로써 성능의 개선점을 검증한다.