암호조합에 기반한 프라이버시 보호형 지문 템플릿 구성방법

김형균(Hyung Kyun Kim),황정연(Jung Yeon Hwang),김수형(Soo Hyung Kim),진승헌(Seung Hun Jin) 한국정보기술학회 2017 한국정보기술학회논문지 Vol.15 No.10

Biometric authentication technology is very useful as a simple authentication because it does not need to memorize the password and memorize the ownership of a separate storage medium for storing the key. However, when biometric information is leaked, the individual’s own information can not be reused permanently. In this paper, we propose a technique to securely hide fingerprint information using a combination of encryption. The proposed technique is 50% more efficient in terms of the size of a fingerprint template, compared to a fingerprint Fuzzy Vault technique which makes use of chaff points to hide fingerprint information. In addition, our method is strong against correlation attacks. By analyzing with concrete parameters, we show our method outperforms in terms of security and efficiency.

지문을 이용한 생체 인증방식의 동향

김형균 ( Hyung-kyun Kim ),황정연 ( Jung-yeon Hwang ),김수형 ( Soo-hyung Kim ),진승헌 ( Seung-hun Jin ) 한국정보처리학회 2017 한국정보처리학회 학술대회논문집 Vol.24 No.1

최근 기존에 사용하던 패스워드, PIN의 취약성으로 인해 개인정보 유출, 도난 등 다양한 문제가 발생하고 있다. 이를 대체할 목적으로 사람의 신체를 이용한 바이오 인증 기술이 떠오르고 있으며, 많은 연구를 거치고 있다. 그러나 사람의 바이오 정보는 외부에 노출 될 시, 이를 복구할 방법이 없기 때문에 개인정보 보호가 필수적이다. 본 논문에서는 바이오 인식 기술 중 지문을 기반으로 사용자 매칭 기법과 개인 프라이버시 보호를 위한 템플릿 구성방법에 대한 동향을 살펴본다.

증례보고 : 소장 절제술을 시행받은 환아에서의 소장 이식 수술의 마취 관리

김한수 ( Han Soo Kim ),김형균 ( Hyung Kyun Kim ),김지애 ( Jie Ae Kim ),방시라 ( Si Ra Bang ),김갑수 ( Gaab Soo Kim ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.53 No.6

Small bowel transplantation is becoming the treatment of choice for short-gut syndrome. Improvements in surgical techniques, immunosuppressants, and anesthetic management of patients have allowed this procedure to become the standard of treatment for patients who are unable to continue total parenteral nutrition (TPN) therapy due to TPN-associated complications. We experienced small bowel transplantation in a 10-month-old male infant who had small bowel resection for small bowel volvulus and has suffered from complications such as recurrent sepsis, disseminated intravascular coagulation (DIC) due to long-term TPN. We report our experience with a brief review of the relevant literature. (Korean J Anesthesiol 2007; 53: 791∼5)

비유곡선에 (泌乳曲線) 의한 산유량추정에 (産乳量推定) 관한 연구

문승주,김형균,김재홍 ( Sung Ju Moon,Hyung Kyun Kim,Jae Hong Kim ) 한국낙농학회 1982 韓國酪農學會誌 Vol.4 No.1

濟州道內의 소飼育과 牧野地 利用에 關한 調査硏究

康太淑,金炯均 제주대학교 1974 논문집 Vol.6 No.-

For improvement of livestock farming in Cheju province surveying the management of among the village cooperative ranches, 30 among the full time raising cattle forms and 10 among the subjob feeding cattle farms were carried out for onemonth. The results analysed are as follows : 1. The pasture area of the 30 cooperative ranches was 8.3% of the total pasture area in Cheju. Hovewer, there were 30 cooperative ranches raising 22% of rhe total number of all the cattle in Cheju. 2. The pasture area of the total cooperative ranches in Cheju was 35% of the total pasture area and the village cooperative ranches had 60% of the total Ri in Cheju. 3. The avenage area of the cooperative ranches was 163 ha and pasture area per head was 0.4 ha, per parms was 1 ha and raising cattle farms was 67% of the total farms and the head of the raising cattle per parms was 2.5. 4. The number of raising beef cattle in Cheju was 72% in Korea and the area of the improved range in Cheju was 40% of the total area in Korea. 5. Fourty for percentage of the feeding bull was Brahmans and 74% of those seeking the service of bulls prefered Brahmans. 6. Twenty six percentage of the cooperative ranches have silos in their respective villages, but only 5.3% of raising cattle household in the village that have silos used them to store silage. 7. Eighty five percentage of the farms wanted to put fire in their pastures. Their main reason is to graze early and to control tick problem.

프리캐스트용 고성능 콘크리트의 내구특성 검토

정영화,윤경구,용석응,김형균 강원대학교 부설 석재복합신소재 제품연구센터 1999 석재연 논문집 Vol.4 No.-

포장용 콘크리트는 열악한 환경조건에 의해 손상을 받지 않을 정도의 충분한 내구성을 가지고 있어야 한다. 포장 콘크리트는 실질적으로 겨울철에 제설제로 인한 동해를 받는 열악한 환경에 놓이기 때문에 동결-융해에 대한 손실을 쉽게 받을 수 있다. 이 연구에서는 폴리프로필렌 섬유를 혼입한 포장 콘크리트의 내구특성을 검토하여 현장적용가능성을 검토하기 위하여 섬유종류, 섬유혼입율, 콘크리트 배합종류를 주요 실험변수로 하여 실내시험을 수행하였다. 이를 위하여 먼저 폴리프로필렌 섬유보강 콘크리트의 압축강도시험을 통하여 강도특성을 분석하고 박 저항성 시험을 통하여 내구특성을 분석하였다. 박리저항성 시험은 국내에서 제설제로 사용하고 있는 4%의 염화칼슘을 콘크리트시편 표면에 유지시켜 동결-융해 사이클을 진행시켜 매5사이클마다 겉보기 등급과 무게변화를 측정하였다. 그 결과, 압축강도는 섬유 혼입율이 증가할수록 증가하였으며, 망사형 섬유보다는 단사형 섬유가 강도증진에 효과적임을 확인할 수 있었다. 박리저항성은 섬유의 혼입율이 증가할수록 모든 배합에서 우수한 것으로 나타났다. 무게 변화는 모든 배합에서 단사형 섬유와 망사형 섬유 모두 혼입율이 증가할수록 무게 손실량이 섬유를 혼입하지 않은 시험편에 비해 1.85∼27.5%로 감소하는 것으로 나타나 박리저항성 증진에 효과적임을 확인할 수 있었다. 폴리프로필렌 섬유보강 콘크리트의 강도특성의 내구특성을 분석한 결과 고속도로 배합인 경우 단사형 섬유와 망사형 섬유 모두 혼입율 0.10%에서 강도와 내구성 증진효과가 가장 우수한 것으로 나타났다. 강도특성과 내구특성을 분석한 결과, 내구특성이 보통 콘크리트보다 내구특성이 우수하여 현장적용이 가능한 것으로 나타났다. Pavement concrete subjected to severe environmental condition may be vulnerable to frost attack practically where de-icing chemicals are used. This study focused on the investigation of durability characteristics of pavement concrete incorporating polypropylene fibers and application feasibility of these into the pavements of local roads and highway. A series of labortory tests were performed with main experimental variable such as fiber types, fiber contents and type of concrete mix. The test of compressive strength was executed as primary tests, before the durability tests such as a scaling resistance were performed. De-icing salt resistance test was progressed by recycling freeze and thaw in the presence of a 4% calcium chloride solution. The deteriorated surfaces were rated by visual inspection and the loss weight were measured at every 5 cycles. The compressive strength of polypropylene fiber reinforced concrete increased as the fiber contents increased. The loss of weight decreased by 1.85∼27.5% compared to those of plain concrete as the fiber contents increased in the all kind of concrete mix. Thus de-icing salt scaling resistance of polypropylene fiber reinforced concrete increased as the fiber contents increased in the all concrete mix. From the results of strength and durability of polypropylene fiber reinforced concrete, it was concluded that they may be applied to the pavement of local roads and highway due to their excellent durability characteristics superior to those of plain concrete.

스포츠 일탈의 관점과 유형의 체계정립

정의권,김형균 중앙대학교 스포츠과학연구소 2001 體育硏究 Vol.- No.15

There are many examples that the activity called deviation get the first prize in real life or sports scene. This is to encourage deep consciousness among athletes, managers, and trainers by establishing the system of forms and viewpoint of such deviations. 1. The structure - functional view of sports deviation is that we should include functions and counter effects towards society. This means that we should make it concrete in what kind of situation the deviation is functional or counter-effective. 2. Among the social controlling factors of sports, the faith and acception about sports, affection with other athletes, affection variables towards athletes' group could influence on the level of athlete's deviation in negative way. 3. In a functional viewpoint of sports deviation, This focuses on study in social rules not in breaking regulations. 4. In the fact that inequality of benefits according the viewpoint of sports deviation conflict, to the status and the structure of power division. 5. The background of sports deviation behavior can be found in social structure rather then biological instinct or psychological factor, and the frequency and forms of existing deviation in each society can be explained variously. 6. The causes of sports deviation are often suggested as ways to adjust to stress, and they can be approximately divided into conformity, innovation, ritualism, retreat, and rebellion.

제주 돼지의 사육개선을 위한 기초조사 연구

한성욱,김형균,강태숙 제주대학교 1971 논문집 Vol.3 No.-

. The raising and feeding of swine in outhouses(Toilet) arose long ago and become a habit or custom for excrement control. The primary reason for practice is that most Cheju people simply do not like to tauch human feces. As a result of swine living in outhouses (Toilet) there is a great danger to humans of infection with cysticercus cellulosae from eating improperly cooked pork. Farmers do not recognize the offet of cysticercus cellulosae on human beings and must receive adequate education. We can slowly eliminate this problom by teaching and re emphasizing the unsanitary conditions and economic loss arising from this practice of W, C swine raising. The local governments and educated citizens as well as know ledgeable farmers must give continuous instruction and guidance in sanitary practices if we are to alter and eliminate swine feeding in the toilet 1. In Cheju-do the family does not include married children, thus the families are necessarily smaller than the mainland and the number of pigs at any house depends upon number of peoples in the family thus it is usually impossible to feed more than one pig since human feces are utilized as pig feed. 2. Since farmers have only a small amount of feed and feces and aware that the growth rate during a pig's first year is greater than its growth rate during the second year thus indicating a highly efficient utilization of feed during the first year, the farmers usually sell the pig within the first year. 3. Since there is a shortage of sanitary pig feed in Cheju-do greater use should be made of the waste products left over from sweet potato starch production. 4. The primary reason for raising the pig in the toilet is that about 90% of the people do not like to touch human feces out of habit. 5. The first objective in improving the feeding of Cheju swine is the instruction of farmers in the sanitation and health problems and econmic loss involved in raising pigs in the toilet because about 50% of the farmers are ignorant of even the existence of cysticercus cellulosae and its due effect on human beings.

한국산생유(韓國産生乳)의 성분에 관한 연구 : 경기도 평택지방을 중심으로 In Pyung-taek in Kyong-ki area

김현욱,이돈성,김정환,김형균,장영호,권일경 한국낙농학회 1983 韓國酪農學會誌 Vol.5 No.3

이 硏究는 경기도 평택지방에서 생산된 생유시료 3000여점의 乳組成을 알아 봄으로서, 한국산 생유의 대표적 성분함량을 알기 위한 노력의 일환으로 실시되었으며 그 결과는 다음과 같다. 1. 生乳試料의 平均乳組成은 脂肪 3.84%, 蛋白質 3.41%, 乳糖 4.69%, 無脂乳固形分 8.81%, 總乳固形分 12.65%였다. 2. 月別平均乳組成을 볼 때 脂肪과 總乳固形分含量은 여름철이 다른 계절에 비해 낮았고, 그 외 成分은 큰 變化가 없었다. 3. 總乳固形分은 脂肪(r=0.896) 및 無脂乳固形分(r=0.731)과, 無脂乳固形分은 蛋白質 (r=0.764) 및 乳糖(r=0.500)과 높은 상관계수를 나타내었다. This study aimed to provide the partial knowledge for the raw milk composition in Korea by analyzing 3,000 odd raw milk sample produced in Pyong-taek in Kyong-ki area. The results obtained were summarized as follow. 1. The average contents of raw milk components were fat 3.84%, protein 3.41%, lactose 4.69%, SNF 8.81%, and TS 12.65%, respectively. 2. Referring to the monthly variation in average raw milk compositions, fat and TS contents in summer were higher than other seasons, and other components had a little variation. 3. TS and fat (r=0.896), TS and SNF (r=0.731), SNF and protein (r=0.764), and SNF and Lactose (r=0.500) were shown in high correlation coefficients.

만성담마진환자(慢性蕁麻疹患者)의 단자시험성적에 관한 연구

황선욱,김형균,임춘평 대한피부과학회 1979 大韓皮膚科學會誌 Vol.17 No.4

In a large proportion of patients with chronic urticaria, at present, the definite tiology can't be found. There have been occasional attempts to identify the aIIergic causes uaing allergic skin tests, only ta suggest the Candicla albicans and some food yeasts ae probabIe causes. This atady was designed to investgate how often patients with chronic urticaria from Chonnam Province react positively to skin tests with extracts of 42 common. allergene in the standard group Al-13 produced by Bencard Ltd. in England. The authora alao surveyed the clinical characteristics of 63 patients with chronic urtimria of more than 3 months duration, who bad visited the skin clinic of Chosun Univeresity HcepitaI from May. 1977 throug 3. Apr. 1979. The results were summarized as follows; 1. Among 63 patients, the maIe to female ratio was 1: l.2, and the peak incidence was in the 20s and 30s. 2. In regard to the duration of chroic urticaria, the highst frequency waa below one year duration. 3. Among 60% of the pa,tients who experienced seasonal changes, 32.4% had suffered aggravation during the winter. 4. The most common diseases combined with chronic urticaria were allergic rhinitis and atopic dermatitis, occuring in 9.5% of all subjects. 5. Of thase examined, 69.8% showed positive reactions to the prick test with the peak incidence in the 20s and 30s. 6. Among 42 allergens used far the prick test, 28 allergens turned out to be possibly casal agents, the rnost frequent group of allergens involved were grain du sts (27.1%), animal hairs(21.8%) and moulds(16.5%) in that order of frequency and occupying over 65% of the total positive reactions. And the most frequently involved specific allergens were hay dust, mixed grain dust straw dust and tree in that order of frequency. Moreover, 90 of the involved allergens were inhalants. 7. In teen-agers, the reactions to grain dusts, animal ha.irs, rnoulds and pollens were the rnost frequent while reactions to food allergens were most frequent in the 20s, and cotton and house dust are most frequently involved in tbe 40s. 8. Multiple sensitivity was not:d in a majority of cases and the most frequent combination was 2 to 5 allergens. 9. The rnost common abnormal hematologic finding in chronic urticaria was eosinophilia.