ARIA 블록 암호의 소형화 구조

박진섭,김용대,유영갑 충북대학교 컴퓨터정보통신 연구소 2005 컴퓨터정보통신연구 Vol.13 No.2

본 논문에서는 128 비트 ARIA 암호 알고리듬을 소형화시킨 32 비트 하드웨어 구조를 제안하고 있다. 최근 휴대폰을 이용한 금융결제나, 노트북에서 무선 인터넷을 이용한 VPN 접속과 같이 휴대형 장치에서도 보안 서비스가 이루어지고 있다. 휴대형 장치는 제한된 크기와 전력에서 동작하기 때문에 보안서비스를 추가하기위해서는 저전력, 소형화 설계가 요구된다. 본 논문의 ARIA 하드웨어 구조는 이러한 제한된 환경에 적용 가능한 저전력, 소형 구조이다. 제안된 ARIA는 32 비트 구조이다. 소형화를 위해서 4개의 S-box와 32비트 확산 함수를 구현하였다. 또한 복호화할 때 라운드 키 생성에 필요한 확산 함수의 사용하지 않도록 데이터 패스를 수정하였다. 본 논문의 32비트 ARIA는 초기값 생성을 위해 53 클록 사이클이 필요하다. 암/복호화에는 236 클럭 사이클이 요구된다. 32비트 ARIA는 0.35 ㎛ CMOS 공정으로 13,960.5 EG로 구성되었다. This paper presents a 32bit hardware architecture for the ARIA cryptographic algorithm. Recently security service has extended on portable devices such as cellular phones and VPN with wireless Internet at laptops. The mobile units have a limited power with small size demanding a low-power and compact design. The hardware design in this paper is a low-power and compact version of ARIA for the limited mobile environment. The proposed ARIA is based on 32-bit architecture.

자기평가체형에 따른 사회적 체형불안과 신체적 자기개념

최영준,이동환,오갑진 한국스포츠심리학회 2003 한국스포츠심리학회지 Vol.14 No.4

본 연구는 자기평가체형이 사회적 체형불안과 신체적 자기개념에 어떠한 영향을 미치는지 분석하는데 그 목적이 있다. 구체적인 방법으로는 남·여 중학생 332명(남: 173명, 여:159명)을 대상으로 자신의 체형을 너무마름, 약간마름, 보통, 약간살찜, 너무살찜으로 평가한 집단간 사회적 체형불만(Social Physique Anxiety Scale, SPAS)과의 관계를 이원 단일변량분산분석(two way ANOVA)을 통해 알아보았고, 신체적 자기개념(Physical Self-Description Questionnaire, PSDQ)의 하위요인간의 관계를 알아보기 위해 이원 다변량분산분석(two way MANOVA)을 통해 알아보았다. 그리고 사회적 체형불안과 신체적 자기개념의 하위요인간의 상관관계를 알아보았다. 비교결과, 사회적 체형불안은 성별에 있어서는 유의한 차이가 나타나지 않았으나, 자기체형 인식에 따라서는 보통이라고 평가한 집단이 가장 낮고, 너무 살찜이라고 평가한 집단이 가장 높게 나타났다. 신체적 자기개념에서는 남학생이 신체활동, 건강, 지구력, 스포츠유능감 요인에서 여학생보다 높게 나타났고, 자기체형 인식에 따른 집단간에는 보통과 약간 마름의로 평가한 집단에서 체지방, 외모, 건강, 자기존중, 유연성, 지구력, 신체전반의 7개 요인에서 가장 높은 점수를 나타내었다. 마지막으로, 남학생과 여학생 모두 체지방과 자기존중에서 사회적 체형불안과 높은 상관관계가 발견되었고, 여학생에게서 더 높은 상관관계가 나타났다. 이외에도 여학생은 스포츠유능감요인과 지구력요인에서도 사회적 체형불안과 유의한 관계가 있다는 것이 발견되었다. 결론적으로, 자기체형을 어떻게 인식하고 있느냐에 따라 신체적 자기개념의 각 하위 구성요인에 차이가 난다는 것을 보여주고 있고, 사회적 체형불안과 신체적 자기개념과의 상관관계를 설명하는데 있어서 남학생보다는 여학생에게서 더 높은 관계를 나타내고 있다는 것을 시사하고 있다. The purpose of this study was to investigate the Social Physique Anxiety scale(SPAS) and the Physical Self-Description Questionnaire(PSDQ) among Lean Group, Slim Group, Normal Group, Fattish Group, and Fatty Group of 332 middle school students by the Korean Versions of the SPAS and the PSDQ. The results are as follows; On the Social Physique Anxiety, there was a significant difference with the main effect of Group(p< .05). Normal Group was lower than any other group and Fatty Group was higher than all the other groups. There was not a significant difference with the main effect of Gender. On the Physical Self-Description. boys were higher than girls in the scores of self-perceptions of physical activity, health, endurance, and sports competence. And Lean and Normal Groups were higher than the other Groups in the scores of self-perceptions of body fat, attractiveness, health, self esteem, flexibility, endurance, and global physical. Finally, body fat and self esteem showed high negative correlation coefficients with social physique anxiety for both boys and girls.

모 축전지 회사 근로자들의 연폭로 지표에 대한 경시적 관찰

강명식,김용배,이용진,리갑수,김화성,황규윤,장봉기,이성수,안규동,이병국 순천향대학교 산업의학연구소 1998 순천향산업의학 Vol.4 No.1

Lead poisoning is still prevalent and one of important occupational disease in Korea. To prevent undue high lead burden and maintain good health condition of lead workers in lead using industries, periodic health examination and regular biological monitoring of lead workers are often required in addition to the fundamental improvement of their working condition. To evaluate the effect of comprehensive occupational health program with regular biological monitoring on the level of lead exposure of lead workers in lead using industries, 11 year database from 1983 to 1994 of one storage battery factory was reviewed. From 1983 to end of 1986 only periodic health examination was provided to the lead workers, but from 1987 comprehensive occupational health program with regular biological monitoring was provided to maintain better health condition of lead workers. Selected study variables for lead exposure were blood lead(PbB), zinc protoporphyrin in blood(ZPP), δ-aminolevulinic acid in urine(ALAU), hemoglobin(Hb), hematocrit(HCT). Information on sex, age and work duration was also reviewed. 5 years data from 1983 to 1987 and 3 years data from 1990, 1993 and 1994 were available for all lead exposure indices except ALAU which has only 5 years data from 1983 to 1997. The results of 11 years longitudinal observation of lead indices are all follows: 1. The mean value of ZPP of lead workers in 1983 was 148.7±73.1 ㎍/㎗(Male: 145.5±72.3, Female: 168.1±79.1), whereas that of ZPP of lead workers in 1994 was decreased to 64.3±32.7 ㎍/㎗(Male: 60.2±28.8, Female: 95.2±43.4). 2. The mean value of PbB of lead workers in 1983 was 56.4±18.8 ㎍/㎗(Male: 55.59±19.1, Female: 59.6±19.1), whereas that of PbB of lead workers in 1994 was dcreased to 35.4±11.9 ㎍/㎗(Male: 35.7±12.0, Female: 32.8±10.8). 3. The mean value of Hb of lead workers in 1983 was 14.1±1.4 g/㎗(Male: 14.4±1.1, Female: 11.7±0.8), whereas that of Hb of lead workers in 1994 was increased to 15.6±1.5 g/㎗(Male: 15.9±1.2, Female: 12.9±1.1). 4. Blood lead is most highly correlated with ZPP(r=0.522, male:0.54 and female:0.50) and also correlated with ALAU and work duration also. 5. The simple regression analysis of PbB and ZPP showed different coefficient of regression by the measurement year, but there was no difference of coefficient of regression between sex. The slope of equation of pooled data for 1983-1986 without comprehensive occupational health program was 2.16 and differed from that of pooled data for 1987-1994(1.25). This difference suggests that the unit effect of blood lead on ZPP was relatively smaller in later period of comprehensive occupational health program than carly period without comprehensive program. The slope change in the analysis of linear regression of PbB on ZPP in lead workers can be used to evaluate the possible effect of health intervention to prevent undue high lead absorption in lead using industries. 6. 11 years occupational health service in this storage battery factory brought out considerable improvement of health status of lead workers in terms of decrease of PbB and ZPP and increase of Hb and the improvement was more remarkable after the introduction of comprehensive occupational health program.

淨水場 單位工程의 最適化 自動制御 시스템에 관한 硏究

김성순,문교영,김갑진 중앙대학교 기술과학연구소 1998 기술과학연구소 논문집 Vol.28 No.-

본 연구는 상수도 공급의 합리적 방안 연구의 일환으로서 수질개선과 효율적인 공급관리 체계확립을 연구하였다. 먼저 상수도 체계도를 각각 단계별로 분류하였으며, 정수장의 수처리 공정에서 발생하는 근원적인 문제점과 실태를 조사ㆍ분석하여 개선책과 대안들을 제시하고자 하였다. 또한 상수도 관리공정의 자동화 및 계측제어 system 방식의 도입을 통하여 비효율적인 기존의 인위적 생산방식을 탈피하고, 제한된 용수자원을 최대한 호라용하여 능률적인 상수원 공급체계를 확립하고자 하였다. Water Supply in Water Treatment Plants has been accomplished at a great extent for last decade in Anyang City. Some problems to be solved were disclosed in the survey which dealt with operation and the installation procedure. Optimum Auto-Control System is a kind of preventive maintenance equipment which monitors continuously the operating condition of equipment and alarms to the operator in case of abnormal condition to prevent equipment from transition to big trouble. This system monitoring the efficiency of water treatment plants. By suggesting standard model of Optimizing Control System after completion, it will be possible to adapt this model to the renewaland/or new construction of other Water Supply System. Also it will contribute to the effective equipment operation by maintenancing cost cut-down and remote monitoring and control.

Comparison of Oil Sorption Capacity and Biodegradability of PP, PP/kapok(10/90wt%) Blend and Commercial(T2COM) Oil Sorbent Pads

Young-Hee Lee,Eun-Jin Lee,Gap-Shik Chang,Dong-Jin Lee,Young-Jin Jung,Han-Do Kim 한국염색가공학회 2014 韓國染色加工學會誌 Vol.26 No.3

저급연료 미세먼지 저감을 위한 연료 전처리 기술

김진성(Jin Seung Kim),최영찬(Young-Chan Choi),김용구(Yong Ku Kim),이영주(Young-Joo Lee),송규섭(Gyu-Seob Song),박준수(Jun Su Park),유정훈(Junghoon Yoo),유철휘(Chul Hwi Yoo),황갑진(Gap Jin Hwang) 한국에너지기후변화학회 2022 한국에너지기후변화학회 학술대회 Vol.2022 No.5

Low power cryptographic circuit design

You, Young-Gap,Kim, Seung-Youl,Kim, Young-Dae,Park, Jin-Sub 충북대학교 컴퓨터정보통신 연구소 2006 컴퓨터정보통신연구 Vol.14 No.3

This paper presented a low power design of a 32bit block cypher processor reduced from the original 128bit architecture. The data path and diffusion function of the processor were reduced to accommodate the smaller hardware size. As a running example demonstrating the design approach, we employed a modified ARIA algorithm having four S-boxes. The proposed 32bit ARIA processor comprises 13,893 gates which is 68.25% smaller than the original 128bit structure. The design was synthesized and verified based on the standard cell library of the MagnaChip,s 0,35㎛ CMOS process. A transistor level power simulation shows that the power consumption of the proposed processor reduced to 61.4mW, which is 9.7% of the original 128bit design. The low power design of the block cypher processor would be essential for improving security of battery-less wireless sensor networks or RFID.

주니어 테니스 선수 상해예방 트레이닝 프로그램 개발

최진영(Choi, Jin-Young),노갑택(Ro, Gap-Tack),김성훈(Kim, Sung-Hoon) 세계태권도문화학회 2018 세계태권도문화학회지 Vol.9 No.4

The purpose of this study is to develop Injury Prevention Training Program for Junior Tennis Players and is to examine the efficacy of the program. In order to achieve the purposes of the current study, it has been done in 2steps; the first step was to develop Injury Prevention Training Program for Junior Tennis Players through previous studies and expert group(sports rehabilitation professor 1 person, physical education professor 2 persons, tennis coaches 3 persons and athlete trainers 2 persons) judges. As the subjects of this research, finally total 34 men and women athletes; 18 athletes who attended middle school, 16 from high school, which is located in Gyunggi-do and Seoul; Effectiveness of Injury Prevention Training Program (experimental group 17 persons and control group 17 persons) is verified. Through the processes explained above, conclusions were reached as follows; First, it is developed Injury Prevention Training Program through restructure the stages of rehabilitation programs process. Developed Program is composed of Basic Motion; Stabilization(5), Strength(5), Agility(5) and is modified motion to strengthen tennis-specific muscle. Second, developed Injury Prevention Training Program(experimental group 17 persons and control group 17persons) is conducted for 12 weeks and as a analyze results of study which is influenced by physical factor, performance factor. In summary, it is considered that tennis players experience specific core muscle exercise through Injury Prevention Training Program for Junior Tennis Players and make full use of tennis technic and also adaptable for young player who have chronic lumbar pain. In future study, It will be suggested that Injury Prevention Training Program should be developed and applied to pelvic limb(ankle, knee), the upper limbs(shoulder, wrist) of high frequency of injury.

MnO₂ 첨가량에 따른 NKN-SCT 세라믹스의 전기적 구조적 특성

김민호(Min-Ho Kim),이성갑(Sung-Gap Lee),김용준(Young-Jun Kim),여진호(Jin-Ho Yeo),조예원(Ye-Won Jo),이동진(Dong-Jin Lee),권아영(Ah-Young Kwon),조문정(Moon-Jeong Jo),허유정(Yu-Jeong Heo),이가영(Ga-Young Lee) 대한전기학회 2013 대한전기학회 학술대회 논문집 Vol.2013 No.10

Growth Biology : Relationships of Muscle Fiber Characteristics to Dietary Energy Density, Slaughter Weight, and Muscle Quality Traits in Finishing Pigs

( Jin Yeon Jeong ),( Gap Don Kim ),( Duck Min Ha ),( Man Jong Park ),( Byung Chul Park ),( Seon Tea Joo ),( C. Young Lee ) 한국동물자원과학회 ( 구 한국축산학회 ) 2012 한국축산학회지 Vol.54 No.3

The present study was conducted to investigate the relationships of muscle fiber characteristics to dietary energy density[3.0 (Low-E) vs. 3.2(Med-E) Mcal DE/kg)] and slaughter weight[SW; 110, 125, and 138kg] in finishing pigs(gilt vs. barrow) using a 2×3×2 factorial treatment design. Forty-one longissimus dorsi muscle(LM) samples were analyzed histochemically, with growth performance and physicochemical data for the 41 animals and their LM out of 192 animals and 72 LM used in a previous study retrospectively included. The ADG was less(P<0.01) in the Low-E than in the Med-E group(0.93 vs. 0.73kg) whereas lightness (L*) and redness(a*) of LM were greater in the Low-E group SW did not influence these variables. The diameter and perimeter of the type I(slow-oxidative), type IIA(fast oxido-glycolytic) and type IIB(fast glycolytic) fibers increased with increasing SW whereas densities of the fibers decreased. However, the number and area percentages of the fiber types were not influenced by SW or dietary energy density. The percentage and per-mm2 density of type IIB fibers were negatively correlated with SW (r=-0.33 and -0.57, with P<0.05 and <0.01, respectively), whereas type I fiber number percentage was positively correlated with SW(r=0.31; P<0.05). Marbling score was negatively correlated(P<0.05) with type I(r=-0.36) and type IIB(r=-0.39) fiber densities. The a* was correlated(P<0.01) with both type I and type IIB fiber number percentages in the opposite way(r=0.42 and -0.47, respectively). However, L*(lightness), drip loss and pH24h were not correlated with the fiber number percentage or density of any fiber type. Collectively, results indicate that muscle fibers grow by hypertrophy during the late finishing period, but that fiber characteristics other than the size are not significantly influenced by dietary energy density or SW.