M-Commerce에서 Secure Card 기반의 결제 프로토콜 설계

김성열,조성지,유성진,배용근 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.2

In order to provide a reliable M-Commerce, a payment solution with security functions should be required. User's mobile terminals used in M-Commerce services are diversifying to cellular phone, PDA, Smart phone etc. Among them, integration of PDA's interface and mobile connection overcomes the weak point of existing cellular phone depending on information via the internet. In this paper, the Secure Card based protocol for a credit card transaction on PDA using ECC is presented. Secure Card module on this protocol encrypts user's information such as private information, delivery information and credit card information and stores it on PDA in order to free from inputting information whenever it is used. This scheme also offers security services on M-Commerce including authentication, confidentiality, integration, non-repudiation and so on.

CO₂고정을 위한 화학독립영양미생물 Aeromonas sp. strain JS-1의 분리 및 특성

배상옥,곽경오,이용운,김성준,정선용 전남대학교 촉매연구소 2000 觸媒硏究 論文集 Vol.21 No.-

The increase of CO2 in the atmosphere by fossil-fuel combustion has been recognized as a major cause of global warming. Thus many studies on CO2 removal from the combustion gas have been performed, and recently the techniques for biological CO2 fixation by photoautotrophs have also been developed, In this study, extensive screening was conducted to obtain micoorganism with high capability in fixing CO2, and its characteristics was investigated. As a result, a chemoautotrophs identified as a Aeromonas sp. strain JS-1 was isolated from the fresh water. The isolated strain used the molecular hydrogen and CO2 as an energy and a carbon source, respectively. Growth characteristics, which will be used in the development of a continuous culture system related in CO2 fixation, were examined in batch cultivation under conditions of various CO2 and NaCl concentrations, temperature, and pH. The results of the examination showed that the isolated strain had a good growth to high CO2 concentration(40%), indicating applicable in removing CO2 discharged from industries.

충남지역 초등학교의 구강보건관리 실태

배진순,장성실 韓國學校保健學會 2000 韓國學校保健學會誌 Vol.13 No.2

Primary school is regarded as an important period when many health-related behaviors and life-styles begin to be formed. Acquiring them through school heath education has a strong influence on the health promotion of not only the family but also the community. The objectives of this study were to evaluate current oral health care of elementary schools in Chungnam province and to provide information for further development in elementary school oral health. We performed a questionnaire survey to 280 health teachers and among them, 155 teachers answered. The result of this study were as follows: 1. Sixty five percent of the health teachers had little interest in oral health. Major information sources for teaching oral health were books in 58.1% of the 155 teachers and 83.2% of teachers spent 30 minutes to 1hour per day in oral health care practice for the students. 2. Contents of the oral health education were composed of regular and special curriculums, and an average of education time during a semester was 2.6 hours in 3rd grade and 1.3 hours in first and second grade. 60.6% of the teachers made the children practice the proper method of tooth brushing during the education time. 3. Major problems in oral health education were insufficient time, lack of equipment and difficulty in teaching method. The educational media were tooth models among 91.0% and OHP among 85.2% of the teachers. The tooth model was usually used in first to fourth grades and OHP in fifth to sixth grades. But 63.9% health teachers need to develop stronger educational methods using multimedia. 4. Meanwhile the most important strategy of oral health in urban schools was health education that of rural schools was fluoride mouth-rinsing programme. Fluoride mouth-rinsing programmes were performed by 89.0% schools sent the results home through school notification letters, but post-examination management was performed in only 57.1% of then 64.5% of the health teachers do follow-ups on the oral disease of the children after the examination. Only 0.7% of the schools have oral health education plans for the students' parents. Considering these major strategies for elementary school oral health care were health education practicing proper methods of tooth brushing, periodic dental examinations, and fluoride mouth-rinsing programmes. But health teachers need mare time for oral health education, practicing and management, and developing education materials. With regard to the high demand for oral health education and poor follow-up after periodic examination, the oral health education in elementary school should be considered as a formal educational course for more proper management of oral health, including application of major strategies to the children in earlier grades and extorts for increasing recognition and participation of the parents.

酪農經營實態에 關한 調査硏究 : 全南 東部地域을 中心으로 In the eastern area in Cheonnam province

裵仁烋,趙聖均 順天大學校 1983 論文集 Vol.2 No.1

1982年 7月 15日부터 9月 30日까지 75日間 全南 東部地域內 87個 乳牛飼育農家中 56個의 農家를 對象으로 經營主의 一般的인 事項·牧場實態·飼養管理·經營成果· 및 基他 酪農用土地保有現況·經營記錄實態를 調査 分析하였던 바 그 結果를 要約하면 다음과 같다. 1. 經營主의 年齡에 있어서는 41세 以上인 農家가 33戶(58.9%)였고, 學歷은 高卒以上이 27戶(48.2%)였으며, 酪農經營經歷에 있어서는 6年 以上의 經歷을 지닌 農家가 26戶(46.4%) 였고, 經營類型으로 보아 專業農家는 17戶(30.4%)였다. 2. 對象農家의 立地條件에서는 40戶(71.4%)가 山地帶에 位置하고 있었고, 農家에서 集乳道路까지의 거리에 있어서는 2㎞ 以上인 農家가 21戶(36.4%)였으며, 戶當 平均 飼育頭數는 成牛로 換算하여 9.0頭였다. 牛舍 面積은 成牛換算頭當 平均 13.97㎡였고 搾乳機 및 耕耘機의 保有台數는 戶當 平均 1.1台, 0,8台였다. 3. 調査對象農家의 搾乳牛頭當 1日 平均 濃厚飼料給與量은 8.7㎏이었고, 組飼料의 給與量은 5.12㎏(乾物量)였으며, 搾乳牛頭當 1日 平均 産乳量은 15.4㎏(節圍 12.0∼21.0㎏)이었고, 對象農家의 乳飼比는 平均値에 있어서 35.4%였다. 4. 酪農用土地面積은 戶當 平均 9,983.0㎡(約 1.0㏊), 成牛換算頭當 平均 1,107.5㎡(約 0.11㏊)였으며, 經營記錄에 있어서는 현금 출납부를 記錄하는 農家가 48.2%, 搾乳量을 記錄하는 農家는 39.3%, 繁殖記錄을 하는 農家는 46.4%였다. A survey of dairy farms in the eastern area of Cheonnam province was undertaken from Jul.15 to Sep. 30 in 1982. 56 dairy farms were surveyed for age, school career, dairy farming career of dairymen, type of farming, condition of location, distance degree from farms to the local roads, herd size, farm equipments, type of feeding and management, milk yield and milk feed ratio, land area and dairy management records. The results obtained were summarized as follows: 1. In the age of dairymen, 33 farms(58.9%) were over 41 years old, and 27 dairymen(48.2%) were graduated from high school, college and university, and 26 farms (46.4%) were over 6 year in the dairy farming career, and in the type of farming, 17 farms(30.4%) were operated in the type of full-time farm-house hold farming. 2. In the condition of location, 40 farms(71.4%) were located in the mountainous district, and in the distance degree from farms to the local roads, 21 farms(37.5%) were located over 2km. The average herd size was 9.0 heads by animal unit, the nos. of milker and hand tractor were 1.1, 0.8 per farm, respectively. 3. The average amount of concentrate feeding per milking cow per day was 8.7kg, the average of roughage feeding was 5.12kg(dry matter). The average milk yield per milking cow per day was 15.4kg(range 12.0∼21.0kg) and the average milk feed ratio was 35.4%. 4. The average land area per farm and per head by animal unit were 9,983.0㎡(about 1.0ha) and 1,107.5㎡(about 0.11ha) respectively and in the dairy management record, 48.2% had the cash book, 39.3% had the milk production record, 46.4% had the breeding record.

IPv6 네트워크 전환에 대비한 보안취약점 및 개선에 관한 연구

배성환, 조인준 배재대학교 공학연구소 2022 공학논문집 Vol.24 No.1

체성분이 폐경 전후 여성의 골밀도에 미치는 여향

배성욱,남철현,신두만,차경미,서인선 慶山大學校 保健福祉硏究所 2002 保健福祉硏究 Vol.7 No.-

Objectives : To evaluate the degree of bone mineral density and prevalence rate of osteoporosis according to age and to search the preventive strategy for osteoporosis, the factors that affect on bone density were studied in Physical Characteristics of pre- and postmenopausal women in korea. Methods : The subjects were 961 premenopausal and 1,167 postmenopausal women who have examined in health promotion center of Yeungnam University Hospital in Daegu city from January, 1999 to January, 2001. The test for bone mineral density, biochemical factors, and body composition were done. Results : 1) The prevalence rates of reduced bone mineral density and osteoporosis in premenopausal women were 23.8% and 1.6%, respectively. However, these values were increased to 46.1% and 28.1% in postmenopausal women. 2) The body weight and height were important predictive factors for bone mineral density. The effects of age, body weight, and height on bone mineral density were 39%. The body weight was correlated statistically significantly with bone mineral density in pre- and postmenopausal women. The higher body mass index (BMI), the greater value of bone mineral density was revealed in pre- and postmenopausal women. 3) The correlation between body composition adjusted for body weight and bone mineral density revealed similar pattern between pre- and postmenopausal women. The height, lean body mass, muscle mass, mineral content, and mineral fraction were positively correlated with bone mineral density, however, body fat mass, percent body fat, waist/hip ratio, and BMI were correlated negatively with bone mineral density. 4) There was no direct correlation between cardiovascular risk factor and bone mineral density in this study, however, further study is needed because cardiovascular disease and osteoporosis have common risk factor and the prevention of osteoporosis can help to prevent cardiovascular disease. 5) In multiple regression analysis among bone mineral density as a dependent variable and independent variables (age, body weight, height, Ca/creatinine ratio, and alkaline phosphatase (ALP)), ALP revealed statistically significant inverse correlation with bone mineral density. Conclusions : These results suggested that to prevent osteoporosis, the systemized program including physical condition for promoting anti-osteoporotic factor have to be developed and apply from the thirties whom have maximal bone mineral density.

Cellulose Triacetate 막에서 CD₂ 와 CH₄혼합기체의 투과

배성렬,노상호,이규훈 한양대학교 에너지 ·환경기술연구소 1995 에너지·環境技術論文集 Vol.2 No.-

Cellulose Triacetate막에서 CO₂의 수착실험은 pressure decay method에 의해서 행하였고, 수착실험의 온도범위는 50℃, 60℃이고 압력범위는 13atm 까지 가압하여 수착 등온선을 측정하였다. 이런 조건하에서는 CO₂의 수착평형은 Dual-mode sorption model에 의한 이론치와 실험치가 비교적 일치한다는 것을 알 수 있다. Dual-mode sorption model 수착 매개 변수들은 비선형 최소 자승법으로 구하였다. 투과실험은 같은 온도 조건과 25atm까지의 압력 범위까지 수행하였다. 실험에서 얻은 평균투과계수의 압력의존성은 고온, 고압에서 기존의 Dual-mode mobility model로는 설명할 수 없었다. 이런 현상은 기체 분자에 의한 가소화 현상 때문으로 생각할 수 있다. 따라서 modified dual-mode mobility model을 적용시킨 결과 잘 일치하였다. 또한 CTA막에서 CO₂와 CH₄혼합기체의 투과 실험을 40℃, 50℃, 60℃의 온도 범위와 25 atm의 압력 범위 하에서 행하였다. 순수 기체에 비해서 복잡한 혼합 기체의 투과를 설명하기 위해서 Dual-mode mobility model을 적용시켜 보았고 잘 일치하는 것을 알 수 있었다. 또한 혼합 기체의 거동에서 CO₂을 고려한 부분투과계수를 구하였다. 이때의 부분투과계수의 압력 의존성이 Dual-mode mobility model에 잘 일치하는 것을 알 수 있었다. The sorption isotherms of CO₂in cellulose triacetate membrane sample were measured by a pressure decay method to examine the sorption model of CO₂. And the permeation experiments were perfomed by variable volume method to analyze the permeation model of CO₂. Sorption experiments carried out 50, 60℃ and pressure up to 13 atm in cellulose triacetate. The sorption equilibria of CO₂at these temperature range can be simulated well by dual-mode sorption model. The values of the dual-mode sorption parameter were estimated by the non linear least square method. Permeation runs were carried out at same trmperature and pressure to 25atm. The pressure dependence of mean permeability of CO₂at these temperature range couldn't accurately be simulated by a dual-mode mobility model because of the plasticization action of sorbed gas in the polymer membrane. But more satisfactorily simulated by a modified dual-mode mobility model. An analytical solution has been obtained for the dual-mode mobility model extended to a binary gas mixtures to describe the pressure dependence of mean permeablity for CO₂and CH₄in the cellulose triacetate membranes. Binary gas of permeation rate measured at 40, 50, 60℃ and upstream pressure 25atm. Mean permeability of each component in a binary gas were calculated by the basis of the dual-mode mobility model.

청각 장애 학생과 교사 및 부모의 수화에 대한 태도 연구

배둘련,안성우,백유순 한국특수아동학회 2002 특수아동교육연구 Vol.4 No.1

본 연구는 청각 장애 학생들, 청각 장애 학교에 근무하는 교사들, 그리고 청각 장애 아동을 자녀로 둔 부모들의 수화와 선호하는 수화에 대한 태도를 조사하기 위해 실시되었다. 본 연구에서는 구체적으로 세 집단의 수화에 대한 태도가 차이가 있는가? 와 세 집단이 선호하는 수화 유형에 차이가? 있는가를 조사하였다. 본 연구에 사용된 피험자는 141명에 청각 장애 학생들, 140명의 청각 장애 학교 교사들, 그리고 120명의 부모들이다. 설문지는 3부분으로 구성되어 있는 데 이는 인구 통계학적 특성을 묻는 문항들과 수화에 대한 태도를 묻는 문항들 그리고 선호하는 수화 유형을 묻는 문항들이고 Likert 5점 척도를 사용하였다. 이 문항들의 신뢰도는 각각 .85, .83, .76이다. 본 연구의 결과는 다음과 같다. 첫째, 교사들의 수화에 대한 태도가 부모들이나 학생들의 태도보다 더 긍정적이었다. 둘째, 학생들은 성인 농자들이 사용하는 수화를 더 선호하는 것으로 나타났고 교사들은 국어 어순에 맞게 표현하는 수화를 더 선호하였다. 이것은 성인 농자들이 사용하는 수화가 학생들의 인지 처리 양식에 더 부합하기 때문에 이해하기가 국어 어순대로 표현한 수화보다 더 쉬울 것이기 때문일 것이다. The purpose of the present study is to investigate the attitudes toward sign language in deaf students, teachers and deaf students' parents using sign language as a communication method. The following research questions is addressed in the study: (1) What's difference of a sign language perception among three groups? (2) What's difference of preferred sign language of three groups? The subjects were 141 deaf students, 140 teachers and 120 parents who have deaf child. The questionnaire was developed based on previous literature and consisted of three parts: (1) Background information (2) Sign language perception (3) Sign language preference. The reliability of this questionnaire was .85, .83, and 76, respectively according to Cronbach alpha. The respondents marked the items on the questionnaire using the Likert Scale. The data were analyzed using ONE-WAY ANOVA and frequency analysis with SPSS for windows. The results are as follows First, teachers' sign perception indicated higher scores than deaf students' and their parents' scores. Therefore teachers estimated sign language highly as useful communication mode for students with hearing impairment. There's no significant difference in the students group according to their parents' hearing status and experiences of integration. And in teachers group, there is also no significant difference regardless of their school level, teaching experience and hearing status. But in parents's group, there's significant difference according to their children's school level and their educational background. The parents who have younger children got lower scores than other parents who have old students, and the parents with higher educational background got slower scores than others with lower educational background. It meant that their attitude toward sign language is comparatively negative. Second, students preferred sign language used by deaf adults to grammatical sign language. But teachers appeared to have favor of grammatical sign language. They are using sign language simultaneously with speech, and using it in a Korean word order. However it is unclear that which sign language type the parents group prefer to because of their poor signing ability. These results suggest that Korean sign language used by deaf adults be not widely used. However, teachers' Korean sign language skill should be emphasized and improved.

폐경 전후 여성의 신체활동 및 생활습관과 골 밀도 수치와의 관련성

배성욱,남철현,홍성철,최연희,이정옥,양숙희 대한보건협회 2002 대한보건연구 Vol.28 No.3

To evaluate the degree of bone mineral density according to physical activity, lifestyle in pre- and postmenopausal women. The subjects were 951 premenopausal and 1,167 postmenopausal women who have examined in health promotion center of Yeungnam University Hospital in Daegu city from January, 1999 to Januaty, 2001. The test for bone mineral density. The physical activity and life style were evaluated by questionaire through interview. The results were summarized as follow. 1) The prevalence rates of reduced bone mineral density and osteoporosis in premenopausal women were 23.8% and 1.6%, respectively. However, these values were increased to 46.1% and 28.1% in postmenopausal women. 2) The regular exercise was revealed to have preventive effect for osteoporosis in pre- and postmenopausal women. Among the types of exercise, the most effective exercise was bowling and moderately effective exercise was swimming on prevention of osteoporosis, however, bare hand physical exercise was not significant effect on bone mineral density. 3) The risk for reducing bone mineral density was decreased in women who have higher educational background and income in pre- and postmenopausal. The bone mineral density was highest in white color worker and lowest in blue color worker. 4) The premenopausal women who favor meat were revealed higher bone mineral density than the women who favor vegetable. The women who have drunk none or small amount of alcohol were revealed increased bone mineral density and smoking was a risk factor for osteoporosis. These results suggested that to prevent osteoporosis, the systemized program for promoting anti-osteoporotic factor have to be developed and apply from the thirties whom have maximal bone mineral density.

國內 畜産物加工品의 消費性向과 品質에 關한 硏究

裵仁烋,吳東煥,趙聖均 順天大學校 1985 論文集 Vol.4 No.1

國內 畜産物 加工品에 대하여 消費性向과 品質에 관하여 全南 都市地域 1,000名의 主婦들로부터 說問 調査한 結果와 30個 品目의 肉類 製品과 28個 品目의 牛乳製品에 대하여 一般 成分과 肉類 製品의 亞窒酸鹽 含量을 分析한 結果는 다음과 같다. 1. 1,000名의 主婦들 中 應答한 主婦들은 825名으로 82.5%였으며 應答한 主婦 대부분이 쇠고기와 돼지고기를 주로 購入하고 쇠 고기에 대한 選好度가 높으며 닭고기나 加工肉 製品의 利用度는 매우 낮았다. 2. 加工肉 製品에 대하여 購入하지 않는 理由로서는 맛이 없고, 품질이 나쁘며 製品의 값이 비싸다고 答하였다. 3. 牛乳 및 牛乳製品이 한 營養食品으로 認識되어 가고 消費層도 一般化 되어가는 傾向을 보이고 있었으나 치이즈나 버터 等의 一部 乳製品에 대하여서는 아직 消費와 認識水準이 낮은 傾向을 보였다. 4. 肉類 製品의 蛋白質 含量은 原科 豚肉의 亞窒酸鹽 含量은 規準値보다 훨씬 낮은 水準이었다. 5. 飮料用 牛乳의 乳脂肪 含量과 蛋白質 含量은 原乳의 平均値보다 낮았으며 포장에 포기된 含量値에도 不足하였고 特히 ice cream의 乳脂肪 含量이 더 낮았다. 6. 應答한 주부들 대부분은 政府가 食品에 대해서, 食品의 安定性, 營養 및 品質, 過正價格維持를 하여 주기를 바라는 傾向이었다. 7. 畜産 産業을 發達시키고 畜産物 加工 食品의 消費를 增加시키기 위해서는 製品의 品質과 맛을 改善시키며 消費者들의 食性에 맞는 多樣한 製品을 生産하는 것이 重要한 課題로 提起되었다. The study was conducted to investigate quality and propensity to consume animal processing products in the country. The experimenter asked a guestion of 1,000 homemakers in the chunnam urban area, analysed chemical content and sodium nitrite for 30 meat processing products, and analyzed chemical content for 28 milk products. The results are summarized as follows. Out of 1,000, 825homemakers responded to the guestion and most of them have preferred beef and pork to meat processing products and poultry meat because the momemakers got the meat processing products from high price, poor quality and unsavory. The experimenter thought that the consumption and the recongnition for milk and milk proucts were a genral tendency, except cheese and butter. The protein contents of pork processing products were low compared with raw pork, and the sodium nitrite contents were very low compared with a tolerance limit. The average milk fat and protein contents of market milk were low compared with raw milk, and the milk fat cotents of ice cream were very low. Most of homemakers wish the government will keep the stability, nutrition, quality and reasonable price of animal products. The experimenter thinks the livestock in dustry develops from increase of consumption of animal processing products by improving the guality, taste and developing the various animal processing products.