• 제목/요약/키워드: S-type

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비밀 S-box를 사용한 GFN에 대한 안전성 분석 (Security Analysis on GFN with Secret S-box)

  • 이용성;강형철;홍득조;성재철;홍석희
    • 정보보호학회논문지
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    • 제27권3호
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    • pp.467-476
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    • 2017
  • 본 논문에서는 라운드 함수의 업데이트 함수로 SP 구조를 사용하고 비밀 S-box가 적용된 GFN(Generalized Feistel Networks) Type I, Type II, Type III에 대한 안전성을 분석한다. 이 환경에서 공격자는 S-box에 대한 정보를 갖지 못한다. 인테그랄 공격 기법(Integral attack) 기반의 선택 평문 공격으로 9 라운드(Type I), 6 라운드(Type II), 6라운드(Type III)에 대한 비밀 S-box 정보를 복구할 수 있다. 선택 암호문 공격으로 전환할 경우 GFN Type I의 16 라운드까지 비밀 S-box의 정보가 복구된다. 결론적으로 m비트 비밀 S-box와 $k{\times}k$ MDS 행렬이 라운드 함수로 사용된 GFN Type I, Type II, Type III에 대하여 비밀 S-box를 복구하는데 ${\frac{2^{3m}}{32k}},{\frac{2^{3m}}{24k}},{\frac{2^{3m}}{36k}}$만큼의 시간복잡도가 필요하다.

20대와 40대 여성의 유방형태 분석 (A Comparative Analysis of Breast Type in 20's and 40's Women)

  • 박은미
    • 대한가정학회지
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    • 제34권2호
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    • pp.85-97
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    • 1996
  • The purpose of this study was to analyze the differences of breast shapes by age, to classify breast types, and to investigate the characteristics of breast shapes by type and the distributions of types by age group, using comparative analysis for women in 20's and 40's. The subjects of anthropometry were 323 women in 20's and 40's. The anthropometric measurements were analyzed by mean, standard deviation, frequency, T-test, F-test, Duncan test, factor and cluster analysis. The results are as follws : 1) According to the increase of age, the items of height were decreased and the items of width, depth, circumference and length were increased, being obeser and breast points were dropped. So the volume and bottom area of 40's women's breast were larger than 20's women's and the breast point to breast point width of 40's women was being wider by the increase of the intereior of breast. 2) 6 factor were extracted from factor analysis by age group. There was no significant difference in consist of factor between age group. There was no significant difference in consist of facotr between age group, but were differences in the connection of factor extracted items and factor loading. Through factor analysis of all age froup, 5 factors were extracted as important factor of breast shapes (obesity of breast and location of breast point ; breast height and volume ; upper dimensions of breast/lower dimensions of breast ; interior dimensions of breast/exterior dimensions of breast ; volume of the lower part and drop of breast). 3) The breast shapes were classified into 4 types by cluster analysis. The frequency of 20's women's breast types appeared in order of type1(53.0%), type3(32.0%), type2(11.0%), type4(4.0%), but that of breast types of 40's women appeared in order of type2(37.9%), type3(31.1%), type4(26.5%), type1(4.5%). Namely, there was few type4 in 20's women and few type1 in 40's women. 20's women's breast types were characterized as type1·3 and type2·3·4 in 40's women. So 40's women had more various breast types than 20's women's.

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소비자의 성격유형에 따른 판매원 서비스 평가와 구매행동 특성 (A Study on Evaluation of Salesperson′s Service and Purchase Behavior as related to Customer′s Personality type)

  • 마윤진;고애란
    • 한국의류학회지
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    • 제25권6호
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    • pp.1155-1166
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    • 2001
  • The purposes of this research were 1) to identify shopping orientation according to customer's personality type, 2) to examine perceived importance of service and satisfaction of service related to customer's personality type, 3) to find the relationships of evaluation of salesperson's service and re-purchase intention in each of customer's personality types. The data were collected via self-administered questionnaires from 434 female formal wear shoppers. and were analyzed by frequency, factor analysis, ANOVA, Chi-square test, and multiple regression analysis. The results of this study were as follows: Shopping orientations varied according to customer's personality type. E type had stronger Hedonic/self-confidence than I type, F type had higher Depending decision making than T type and P type had higher Quick decision making than J type. And service items satisfied the customers with a certain personality type. E type was satisfied with timely and proper A/S, not forcing to purchase and trustful behavior of salesperson more than I Type was. And also with expertise, individualized care, polite attitude, and merchandising promotion. N type was satisfied with individualized care more than S type was. A service evaluation criterion affected the re-purchase intention for a customer with a certain personality type. Customer's convenience in E. I. S, N, T, F, J types had a significant effect on re-purchase intention. And Expertise/ care in E, N, T, J types had a positive effect on re-purchase intention. also Politeness in E, I, S, N, T, J, P types did. But in only E type, Merchandising promotion affected re-purchase intention.

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한국산 Rotifer, Brachinus plicatilis와 B. calyciflorus의 크기 및 내구란 형성 (Size and Resting Egg Formation of Korean Rotifer, Brachionus plicatilis and B. calyciflorus)

  • 허성범;박흠기
    • 한국양식학회지
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    • 제9권3호
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    • pp.187-194
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    • 1996
  • 어류 종묘생산시 중요한 먹이생물로 사용되는 한국산 rotifer를 순수 분리하기 위하여 염전, 기수호, 하구 및 어류 양식장을 중심으로 채집하였다. 해수산 rotifer, B. plicatilis는 13 지역에서 L-type rotifer 2 strains과 S-type rotifer 14 strains을 순수 분리하였다. 담수산 rotifer, B. calyciflorus는 4곳의 양식장에서 4 strains을 순수 분리하였다. 순수 분리된 해수산 rotifer, B. plicatilis. L-type과 S-type rotifer strain의 피갑장과 내구란 장경의 분포는 각각 $244.3\~255.3\;{\mu}m,\;142.4\~145.5\;{\mu}m$$131.0\~165.8\;{\mu}m,\;93.7\~116.4\;{\mu}m$로 나타났다. 또 담수산 rotifer, B. calyciflorus strains의 피갑장과 내구란 장경의 분포는 각각 $211.8\~229.9\;{mu}m$$126.8\~140.2\;{\mu}m$로 나타났다. B. plicatilis는 성장과 내구란 생산이 매우 다양하게 나타났다. L-type과 S-type의 rotifer의 최고 밀도는 각각 O-L이 200개체/ml였고, H-S가 753.3개체/ml로 가장 높게 나타났다. 생산된 내구란은 S-type에서는 YY-S가 86.7개/ml로 가장 높았고, L-type에서는 O-L이 45.8개/ml로 높았다.

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맞벌이 가족 남서의 역할갈등에 관한연구 (Men's Role Conflicts in Dual-Earner Family)

  • 김태현
    • 가정과삶의질연구
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    • 제16권1호
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    • pp.81-94
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    • 1998
  • The purpose of this study is to examine men's role conflicts of dual-earner family based on man's role type. Man's role type is composed of man's sex role attitude and family-role performance and categorized in four types such as traditionalism type neo-traditionalism type equalitarianism type and inconsistancy type. The test analysis can be summarized as follows; First test analysis can be summarized as follows; role performance and man's role conflict as working hours is long wife's role requirement is high family-role conflict as working hours is long wife's role requirement is high family-role is not commit man's role conflict directly affected. In addition indirect affect through family-role performance shows that man's role conflict level is low as level of income is high level of income difference between man and wife is low child is younger and intent to modern sex-role attitude. Second looking into the difference role conflict to man's role type it shows that equalita ianism type's role conflict is low and man's role conflict in traditionalism and neo-traditonalism types is high.

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Bell's palsy 환자의 에니어그램을 이용한 성격분석 (Enneagram Results in patients with Bell's palsy)

  • 윤채성;윤철;김환영;성은진;황충연
    • 한방안이비인후피부과학회지
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    • 제21권3호
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    • pp.200-206
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    • 2008
  • Objectives : This study was planned to find the character type of enneagram in patients with Bell's palsy. Methods : Author gave the 26 patients with Bell's palsy the Korean Enneagram Personality Type Indicator(KEPTI). After making out the questionnaire, we got back them. Then author graded questionnaire papers, and classified according to characte type. We finded that type 1 and type 9 show a higher ratio than any other charicter type. Results : The cause of Bell's palsy onset were over work 34.5%, stress 23.1%, over work and stress 19.2%, cold exposure 7.7%, dental treatment 3.8% pregnancy 3.8%, unknown 7.7%. We finded that type 1 and type 9 show higher ratio than any other charicter type. Conclusion : To find the interrelation between the character type of enneagram and Bell's palsy, further reseach is needed continuosly.

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Effect of Temperature and Salinity on Production of Resting Egg in Korean Rotifer, Brachionus plicatilis (L and S-type)

  • Park, Heum-Gi;Hur, Sun-Bum
    • 한국양식학회지
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    • 제9권4호
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    • pp.321-327
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    • 1996
  • Production of resting egg from the Korean rotifer, Brachiunus plicatilis (L and S-type) was investigated at different temperatures (L-type : 20, 24, $28^{\circ}C$, S-type : 28 32, $36^{\circ}C$) and salinities (10, 20,30 ppt). The rotifer was cultured in 25 ml test tube and fed on Nannochloris oculata. With regard to mixis rate, L-type rotifer showed higher rate at lower temperature, and the highest rate was observed at 20 ppt of salinity at each temperature of the experiment. However, for S-type rotifer, the optimum temperature and salinity were $28\~32^{\circ}C$ and 20 ppt, respectively. The highest number of resting egg was 173 eggs/ml in 16 days at $24^{\circ}C$, 10 ppt for L-type rotifer and 410 eggs/ml in 14 days at $28^{\circ}C$, 10 ppt for S-type rotifer. The maximum number of resting egg produced per 10,000 rotifers was 8,122 eggs at $20^{\circ}C$, 20 ppt for L-type rotifer and 8,700 eggs at $28^{\circ}C$, 20 ppt for S-type rotifer. The maximum number of resting egg produced $10^8$ cells of N. oculata was 50.7 eggs for L-type rotifer ($24^{\circ}C$, 20 ppt) and 79.6 eggs for S-type rotifer ($32^{\circ}C$, 10 ppt). The number of resting egg produced per day was $1\~11$ eggs/ml for L-type rotifers and $21\~35$ eggs/ml for S-type rotifer in 9 combination experiments. In this study, S-type rotifer is better than L-type rotifer in resting egg production, and the optimum temperature and salinity for resting egg production were $20^{\circ}C$, 20 ppt for L-type rotifer and $28^{\circ}C$, 20 ppt for S-type rotifer. This result shows the difference of Korean rotifer in the optimum condition for resting egg production from other rotifers reported earlier.

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결정형 솔비톨의 형태 및 입자 크기가 무설탕 츄잉껌의 텍스쳐에 미치는 영향 (Effect of Morphology and Granule Size of Crystalline D-Sorbitol on Texture of Sugar-Free Chewing Gum)

  • 김상용;오덕근
    • 한국식품과학회지
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    • 제29권5호
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    • pp.987-991
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    • 1997
  • 솔비톨의 형태와 입자크기가 무설탕 츄잉껌의 텍스쳐에 미치는 영향을 살펴보기 위하여 두 가지 형태인 치밀한 구조를 지닌 P-type과 듬성한 구조를 지닌 S-type의 솔비톨과 50 mesh와 100 mesh의 솔비톨을 사용하였다. 츄잉껌에 사용한 솔비톨 형태는 S-type이 P-type보다 더 유연하였고, 50 mesh의 솔비톨 보다 100 mesh가 더 유연하였다. 솔비톨의 강도는 S-type보다 P-type에서 컸으며 50 mesh보다 100 mesh에서 크게 나타났다. 이것은 덜 치밀한 구조를 지닌 솔비톨이 사용된 무설탕 츄잉껌이 높은 유연성과 낮은 강도를 보여 줌을 의미하고 입자의 크기가 작은 솔비톨을 사용할수록 무설탕 츄잉껌의 유연성과 강도가 증가됨을 의미한다. 그러므로 본 실험에서는 유연성이 높고 강도가 상대적으로 낮은 S-type의 솔비톨을 무설탕 츄잉껌의 원료로 선택하였다. 선택한 S-type 솔비톨이 함유된 무설탕 츄잉껌의 솔비톨의 입자크기에 따른 유연성과 강도를 측정한 결과 80 mesh 입자가 츄잉껌의 고체상 원료로 적합하였다. 80 mesh의 S-type 솔비톨이 함유된 무설탕 츄잉껌의 온도변화에 따른 유연성과 강도를 측정하였다. 실험 결과 온도가 증가할수록 무설탕 츄잉껌의 유연성은 증가하였으나 강도는 감소하였다.

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밀어속(genus Rhinogobius, Gobiidae) 어류의 계통분류학적 연구II. 한국산 밀어(R. brunneus complex) 3型의 분포 및 분류학적 고찰 (Systematic studies on the freshwater goby, Rhinogobius species (Percifromes, Gobiidae). II. BEographic distribution and taxonomic status of three color types in the Rhinogobius brunneus complex from South Korea.)

  • 김종범;양서영
    • Animal Systematics, Evolution and Diversity
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    • 제12권4호
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    • pp.331-347
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    • 1996
  • 한국산 밀어(R. brunneus complex)에 대한 지리적 변이 및 분포를 조사한 결과 반 문 및 체색 등에 뚜렷한 차이가 있는 3type이 채집되었다. 이들은 유전적으로도 typerks에 총 genome의 26-30%(A-B type : 30%, A-C type : 30%, B-C type : 26%) 차이가 있어 유전적 근연치(Rogers' S)가 S=0.628-0.661(A-B type : 0.631, A-C type : 0.628, B-C type : 0.661)로 뚜렷한 유전적 차이를 나타냈다. 각 type의 유전적 변이 정도를 비교한 결과 A-type은 평균 P=25.90%, Ho=0.081, He=0.092로 B-type(P=12.33%, Ho=0.037, He=0.044)과 C-type(P=11.10%, Ho=0.032, He=0.048)에 비하여 약 2배 이상 높은 특징을 보였다. 이들 3 type의 분류학적 위치를 명확히 구명하고자 3type이 모두 서식하는 고성의 북천에서 유전적 표식인자를 이용하여 각 typerks의 생식적 격리 수준을 분석하였다. 이들 3 type은 동서(同 棲)하천에서 하구로부터의 거리에 따라 parapatric 하게 서식하면서 각 typerks에 유전자 교 환이 전혀없었다. 이러한 결과로부터 3type은 이미 생식적 격리가 완성되고 미세분포역에 차이가 있는 별종으로 판단되었다.

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Glutathione S-Transferase Activities of S-Type and L-Type Thioltransferases from Arabidopsis thaliana

  • Cho, Young-Wook;Park, Eun-Hee;Lim, Chang-Jin
    • BMB Reports
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    • 제33권2호
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    • pp.179-183
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    • 2000
  • The glutathione S-transferase (GST) activities of S-type and L-type thioltransferases (TTases), which are purified from the seeds and leaves of Arabidopsis thaliana, respectively, were identified and compared. The S-type and L-type TTases showed $K_m$ values of 9.72 mM and 3.18mM on 1-chloro-2,4-dinitrobenzene (CDNB), respectively, indicating the L-type TTase has higher affinity for CDNB. The GST activity of the L-type TTase was rapidly inactivated after being heated at $70^{\circ}C$ or higher. The GST activity of the S-type TTase remains active in a range of $30-90^{\circ}C$. $Hg^{2+}$ inhibited the GST activity of the S-type TTase, whereas $Ca^{2+}$ and $Cd^{2+}$ inhibited the GST activity of the L-type TTase. Our results suggest that the GST activities of two TTases of Arabidopsis thaliana may have different catalytic mechanisms. The importance of the co-existence of TTAse and GST activities in one protein remains to be elucidated.

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