• 대한전자공학회논문지TC
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• 제37권11호
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• pp.32-41
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• 2000

두부 형상이 국내 표준에 근접하는 한 자원자 두부의 MR 및 CT 영상에 바탕하여 새로운 해부학적 두부 모델을 구현하였다. 서로 다른 형상을 갖는 두부의 전자파 비흡수율(SAR)을 비교하기 위해 두 가지의 해부학적 두부 모델의 SAR을 계산하였다. 하나는 구현된 모델이고 다른 하나는 미국 National Library Medicine에서 제작된 흑인 모델이다. 계산 공간 내의 두부와 이동통신단말기는 CENELEC과 FCC 지침의 접촉위치가 되도록 배치하였다. 얻어진 결과로부터 두부의 크기가 작을수록 두부 전체 평균 SAR은 높아짐을 볼 수 있었으나 1g 또는 10g 평균의 국부 SAR은 두부의 크기보다는 외이의 형상에 더 의존하는 것으로 보인다.

• 한국화재소방학회논문지
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• 제20권3호
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• pp.85-95
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• 2006

경제성장과 의학의 발달로 인간의 평균수명이 연장되면서 노인인구가 크게 증가하였다. 노인인구가 증가함에 따라 응급환자에 대한 구급수요도 증가하였다. 이에 소방에서는 현재시범운행중인 실버 앰뷸런스의 확대배치와 병원의료진과 119의 합동체제 구축 및 노인의료관련 교육과정의 신설과 이미 독거 노유자에게 설치 운영중인 무선페이징 시스템의 문제점등을 개선하여 시스템의 기능 향상과 운영의 효율화를 이루고 더 나아가 노인을 위한 전용자원봉사자은행등을 설치 이를 연계한 실버세대에 대한 토털 서비스를 통하여 119업무를 확대해 나감으로써 신뢰받고 사랑받는 소방조직으로 거듭날 수 있을 것이다.

• 대한산업공학회지
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• 제25권4호
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• pp.459-465
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• 1999

A new-concept VDT workstation chair with adjustable keyboard/mouse support was proposed to minimize physical discomfort and the risk of cumulative trauma disorders (CTDs) at work sites in this study. First, a three-dimensional human modeling tool $(SAFEWORK^{(R)})$ was used to design the new chair satisfying the anthropometric specifications of Korean population. Second, based upon the result of 3-D graphical simulation, a mock-up chair was constructed with an adjustable keyboard/mouse support directly attached to the chair body. Third, muscle fatigue and subjective discomfort were measured to evaluate the newly developed chair. An experiment was conducted to compare the new workstation chair to the traditional computer chair without keyboard/mouse support. Six volunteer subjects participated in six one-hour word-processing sessions with two different chairs and three different postures. Statistical results indicate that the new-concept VDT chair generally improved subjective comfort level and reduced fatigue in finger flexor/extensor and low back muscle. In conclusion, this new VDT workstation chair is expected to reduce physical discomfort and prevent occupational CTD problems in the long run. Implications of the new design and suggestions for the further development are also addressed.

• 한국응급구조학회지
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• 제25권3호
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• pp.163-178
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• 2021

Purpose: This study explored a plan for improving the overall preventive activity of Korean Citizen-Corps-Active-in-Disaster (CAIND). Methods: The study used the documentary survey and the technical approach methods. This way, detailed information regarding civil anti-disaster organizations was found in scholarly monographs, specialty publications, and master's/doctoral dissertations. It further utilized the statistical yearbooks between 2015 and 2018 from the Korean Ministry of Public Administration, Security, and Fire Service, and the National Statistical Office, to discover practical problems through a statistical analysis. Volunteer activities being inherent, related issues were reviewed at the same time to for purposes of clarifying the characteristics of disaster prevention activity by CAIND. Results: The study provided four major suggestions for improvement. First, the quota management system of Korean CAIND considering the characteristics of rural areas should be supplemented. Second, the education and training systems of Korean CAIND should be established to satisfy regional conditions. Third, management members' readership competency in operating organizations, including that of the Korean CAIND captain in charge, should be strengthened. Fourth, the reward system for Korean CAIND activities should be improved. Conclusion: In the future, the results of this study are expected to be utilized as a basic data to develop Korean CAIND.

• 대한지리학회지
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• 제43권3호
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• pp.312-323
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• 2008

본 논문에서는 인간 생활에 기본이 되는 온도, 상대습도를 기초로 하여 인간의 온열감을 측정하여 남한의 온열감 분포의 특성과 기후유형을 파악하였다. 연구 방법은 설문지 검사를 통하여 온습도 지수 공식을 이용, 월별 온열감, 연 누적 온열감 지수를 계산하였다. 월별 온열감 지수 분석 결과 온열감의 지역적 차이는 위도 및 고도, 지형적 요인, 기단체계에 따른 영향으로 나타났다. 연 누적 온열감 지수분포는 대체로 남쪽에서 북쪽으로 갈수록, 해안에서 내륙으로 갈수록 기후 스트레스가 증가하였다. 이러한 원인으로 겨울의 추위 스트레스와 여름의 더위 스트레스가 높기 때문에 나타나는 현상으로 사료된다. 연 생리 기후유형은 쾌적함(M)기후유형, 극히 무더움(ES)유형, 쾌적함-극히 무더움(M-ES)유형, 쾌적함-무더움(M-S)유형, 더움-극히 무더움(W-ES)유형, 서늘함-극히 무더움(C-ES)유형, 서늘함-쾌적함(C-M)유형, 서늘함-쾌적함-극히 무더움(C-M-ES)유형으로 도합 8개의 기후유형으로 구분된다.

• Asian Pacific Journal of Cancer Prevention
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• 제17권5호
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• pp.2689-2694
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• 2016

Background: Most studies of human papilloma virus (HPV) are aimed at the natural history of the infection and its relation to cancer; however, there are few studies to assess knowledge of the general population. Our aim was analyze the degree of knowledge of Argentinians about HPV infection and its prevention. Materials and Methods: We conducted a voluntary, anonymous and non-binding survey with 27 multiple-choice items, in twelve private and public establishments, selected to include a broad population in terms of education, age and gender. The survey consisted of three sections: individual characteristics of the volunteer, HPV infection basic knowledge, its prevention and the virus relationship with other cancers. Results: One thousand two hundred ninety seven volunteers aged 18 to 80 participated. The total number of correct answers was 45.1%. The correct answers for relationship HPV and cervical cancer was 62.1%. Almost 55% did not know about types of HPV that the vaccines for protection. Statistical analysis showed that women, single people, workers, the better educated, those who have had a STDs or HPV and receiving information through medical or educational establishments had greater knowledge of the topic. Only 0.2% of participants answered all questions correctly. Conclusions: Knowledge plays an important role in health care and the deficiency found in our population could influence the success of the measures taken in the fight against cervical cancer. In this regard, we believe it would be appropriate, not only to emphasize early diagnosis and vaccine implementation, but also incorporate new communication strategies, facilitating reception of accurate and precise information by all strata of society.

• 한국생활과학회지
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• 제16권3호
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• pp.479-490
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• 2007

This study examines undergraduate students' intimacy toward the grandmother and their attitudes toward the elderly and aging. The study also identifies the variances that influence undergraduate students' intimacy toward the grandmother. The subjects were 397 undergraduates. Statistical analysis was conducted to examine frequency, percentage, mean, standard deviation, Cronbach's ${\alpha}$, t-test, Duncan test, ANOVA, and stepwise multiple regression. The results of this study were as follows; 1) The undergraduates' attitudes were mid-range, but their intimacy level toward their grandmother was high. 2) The undergraduates' intimacy level toward the grandmother differed significantly according to gender, experience of cohabitation, the presence of her, and religion, and it showed a significant correlation with attitudes toward the elderly and aging traits, period of cohabitation, and frequent contact with the grandmother. The undergraduates' intimacy level toward grandmother-in-low, however, was significantly different according to the religion. There was also had a significant correlation with the undergraduate students' attitudes toward the elderly and aging traits. 3) The variables that affect the undergraduates' intimacy level toward the grandmother were attitude, frequency of contact with the grandmother, gender, period of cohabitation, experience of cohabitation, and the presence of the grandmother, which explained about 35% of total variance. Attitudes toward the elderly and aging traits were very important variables for undergraduates' intimacy with their grandmother. The undergraduates' intimacy toward grandmother-in-low was affected by the variables of attitude, religion, experience of volunteer, frequency of contact with the grandmother, gender, and the presence of grandmother, which explained about 24% of the total variance. Attitude toward the elderly and aging traits were the most important variables for undergraduates' intimacy with their grandmother-in-low.

• 구강회복응용과학지
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• 제19권4호
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• pp.281-290
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• 2003

Platelet-rich plasma which is made with the newly developed technique concentrating platelets 3-folds or more is also proven to be very effective method to stimulate and accelerate the healing of bone and soft tissue. This study is aimed to investigate the effect of platelet-rich plasma on the attachment of osteoblast. To evaluate the effect on human, human osteoblast cell line was cultured. Platelet-rich plasma was extracted from the blood of a healthy volunteer. The effect on the attachment was evaluated by MTT assay. To evaluate autocrine and paracrine effect on osteoblast, conditioned medium was made and compared with platelet-rich plasma. By western blot analysis, the expression of fibronectin and vitronectin in experimental groups was examined. The results were as following: The cellular attachment of osteoblast cell line increased depending on the concentration of platelet-rich plasma and conditioned medium. The amount of increasing was similar between two groups. The expression of fibronectin and vitronectin in platelet-rich plasma and conditioned medium is more than control group in western blot analysis. These findings imply that platelet-rich plasma enhance the cellular attachment by inducing fibronectin, vitronectin from osteoblast and maximize the cellular attachment by using the autocrine and paracrine effect of platelet-rich plasma.

• Journal of Preventive Medicine and Public Health
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• 제37권4호
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• pp.373-380
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• 2004

Objectives : There has been gradually increasing concern about the adverse health effects of electromagnetic radiation originating from cell phones which are widely used in modern life. Cell phone radiation may affect human health by increasing free radicals of human blood cells. This study has been designed to identify DNA damage of blood cells by electromagnetic radiation caused by cell phone use. Methods : This study investigated the health effect of acute exposure to commercially available cell phones on certain parameters such as an indicator of DNA damage for 14 healthy adult volunteers. Each volunteer during the experiment talked over the cell phone with the keypad facing the right side of the face for 4 hours. The single cell gel electrophoresis assay (Comet assay), which is very sensitive in detecting the presence of DNA strand-breaks and alkali-labile damage in individual cells, was used to assess peripheral blood cells (T-cells, B-cells, granulocytes) from volunteers before and after exposure to cell phone radiation. The parameters of Comet assay measured were Olive Tail Moment and Tail DNA %. Results : The Olive Tail Moment of B-cells and granulocytes and Tail DNA % of B-cells and granulocytes were increased by a statistically significant extent after 4-hour use of a cell phone compared with controls. Conclusion : It is concluded that cell phone radiation caused the DNA damage during the 4 hours of experimental condition. Nonetheless, this study suggested that cell phone use may increase DNA damage by electromagnetic radiation and other contributing factors.

• International Journal of Automotive Technology
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• 제5권1호
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• pp.33-46
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• 2004

A finite element model development of a 50th percentile male cervical spine is presented in this paper. The model consists of rigid, geometrically accurate vertebrae held together with deformable intervertibral disks, facet joints, and ligaments modeled as a series of nonlinear springs. These deformable structures were rigorously tuned, through failure, to mimic existing experimental data; first as functional unit characterizations at three cervical levels and then as a fully assembled c-spine using the experimental data from Duke University and other data in the NHTSA database. After obtaining satisfactory validation of the performance of the assembled ligamentous cervical spine against available experimental data, 22 cervical muscle pairs, representing the majority of the neck's musculature, were added to the model. Hill's muscle model was utilized to generate muscle forces within the assembled cervical model. The muscle activation level was assumed to be the same for all modeled muscles and the degree of activation was set to correctly predict available human volunteer experimental data from NBDL. The validated model is intended for use as a post processor of dummy measurement within the simulated injury monitor (SIMon) concept being developed by NHTSA where measured kinematics and kinetic data obtained from a dummy during a crash test will serve as the boundary conditions to "drive" the finite element model of the neck. The post-processor will then interrogate the model to determine whether any ligament have exceeded its known failure limit. The model will allow a direct assessment of potential injury, its degree and location thus eliminating the need for global correlates such as Nij.