• 제목/요약/키워드: differential evaluation

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의복과 그 직물에 대한 평가의 재현성 차이에 관한 연구 (A Study of stability in ratings for clothing and their woven fabrics)

  • 유경숙
    • 한국의류학회지
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    • 제25권3호
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    • pp.560-568
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    • 2001
  • The aim of the present study was to measure intra-individual consistency in clothing and fabric evaluation and to examine its relation to the ratings. A sample of 93 female and 97 male university students rated clothing of 4 styles of daytime wear and 2 fabrics on 15 pairs of polar adjectives twice in 7-days interval. Correlation coefficients between the two ratings for each subject, intra-individual consistency in the evaluation, ranged from -0.12 to 0.89 and mean coefficient was 0.63 of female and -0.01 to 0.78 and mean coefficient was 0.54 of male. Based on the coefficients, the subjects were classified into three groups: high, medium, and low intra-individual consistency. Analysis of variance of mean ratings by the three groups revealed that significant difference existed in 24% of female and 23% of male in 90 combinations of 6 clothing and 15 semantic differential scales. Female of subjects with high intra-individual consistency were most likely definite to evaluate clothing, whereas the ones with low were least. But male subjects were not definite. Mean correlation coefficients for style evaluation subscales of female was 0.39, but male was 0.44. Among the semantic differential scales, high stability in the two ratings was observed for the synthetic clothing evaluation. Correlation coefficients for each clothing obtained from the mean score of the subjects in each semantics differential scale were around 0.98, including that the mean scores of the subjects in each scale could yield excellent stability in clothing evaluation.

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할 일들의 순서 선택이 자유로운 증가분 기반 고정점 계산 알고리즘 (A Differential Fixpoint Evaluation Algorithm for Arbitrary Worklist Scheduling)

  • 안준선
    • 한국정보과학회논문지:소프트웨어및응용
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    • 제32권8호
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    • pp.808-818
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    • 2005
  • 본 연구에서는 증가분 기반 계산을 사용한 고정점 계산 방법을 제시하고 이에 기반한 새로운 워크리스트 알고리즘을 제시한다. 제시된 방법은 기존의 증가분 기반 계산과 달리 배분 법칙을 만족하지 않는 계산 시스템에도 효과적으로 적용될 수 있으며 증가분 기반 계산으로 인한 제약 조건을 만족하면서도 다양한 워크리스트 스케줄링 방법을 사용할 수 있는 장점을 가지고 있다. 본 연구의 결과를 프로그램 정적 분석 방법인 요약 해석 방법에 적용하였으며, 이를 사용하여 상수 및 이명 분석과 메모리 생존 분석을 구현하였다. 제시된 실험 결과는 본 연구의 방법이 계산을 실제적으로 절약할 수 있음과, 적절한 워크리스트 스케줄링 방법의 사용이 증가분 기반 계산에서도 중요함을 보여준다.

플레어스커트의 시각적 평가를 위한 의미미분척도 개발 (A Study on Development of Semantic Differential Scales for Visual Evaluation of Flare Skirt)

  • 이정순;한경희
    • 패션비즈니스
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    • 제13권1호
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    • pp.91-101
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    • 2009
  • The purpose of this study is to develop semantic differential scales which are necessary to evaluate visual image and effect of flare skirt. As a result of the first survey of 362 female college students, the most effective factors for shape of flare skirt are silhouette, volume of flare, and skirt length. Based on this result, we made flare skirt simulation for visual evaluation with using I-Designer program. 4 kinds of volume of flare($90^{\circ},\;180^{\circ},\;270^{\circ},\;360^{\circ}$) and 3 kinds of skirt length(48cm, 58cm, 68cm) are combined as variables for flare skirt of visual evaluation. For the second survey of 362 female college students, we asked to write suggested adjectives freely. As a result, we could draw out 210 adjectives. 'Feminine' was most frequently used word for flare skirt, and then, 'vivid', 'rhythmic', 'cute', 'soft', 'fat', and 'comfortable' in this order. With considering frequently used words in the preceding study, we selected 41 adjectives. Antonyms were selected from the resulted frequency of this study and preceding study, and the rest of words were found from dictionary. From these process, we developed semantic differential scales for visual image and effect of flare skirt.

DESIGN EVALUATION OF NO SPIN DIFFERENTIAL MODELS USING THE AXIOMATIC APPROACH

  • Pyun, Y.S.;Jang, Y.D.;Cho, I.H.;Park, J.H.;Combs, A.;Lee, Y.C.
    • International Journal of Automotive Technology
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    • 제7권5호
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    • pp.595-601
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    • 2006
  • Two No Spin Differential(NSD) models were benchmarked for a project of Dual-Use Technology. The Axiomatic approach is utilized to evaluate the designs of the models. The Independence Axiom is satisfied at the top level of design but not at the second level, which implies the design exhibits coupling and will admit design improvements. The detailed process of design evaluation is described. It is shown that it is possible to develop a unique and evolutionary NSD design by solving the problems that cause coupling within two models.

Research on the Security Level of µ2 against Impossible Differential cryptanalysis

  • Zhang, Kai;Lai, Xuejia;Guan, Jie;Hu, Bin
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제16권3호
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    • pp.972-985
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    • 2022
  • In the year 2020, a new lightweight block cipher µ2 is proposed. It has both good software and hardware performance, and it is especially suitable for constrained resource environment. However, the security evaluation on µ2 against impossible differential cryptanalysis seems missing from the specification. To fill this gap, an impossible differential cryptanalysis on µ2 is proposed. In this paper, firstly, some cryptographic properties on µ2 are proposed. Then several longest 7-round impossible differential distinguishers are constructed. Finally, an impossible differential cryptanalysis on µ2 reduced to 10 rounds is proposed based on the constructed distinguishers. The time complexity for the attack is about 269.63 10-round µ2 encryptions, the data complexity is O(248), and the memory complexity is 263.57 Bytes. The reported result indicates that µ2 reduced to 10 rounds can't resist against impossible differential cryptanalysis.

차량의 실내소음에 대한 음질평가 연구 (Study on the Evaluation of Sound Quality of a Vehicle Interior Noise)

  • 이종규;채장범;장한기
    • 한국소음진동공학회논문집
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    • 제15권8호
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    • pp.945-953
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    • 2005
  • The purpose of this paper is to develop a linear regression model for the sound quality index of vehicle Interior noise. For this, objective measurement data of the vehicles driving in acceleration was measured. On the basis of analysis, psychoacoustic parameters were extracted and subjective evaluation was performed by noise and vibration expert evaluators. For the subjective evaluation, the paired comparisons and the semantic differential methods were used to evaluate sound quality of vehicle interior noise. By the paired comparison which evaluate two pairs of vehicle interior noise, the preference was estimated. With the semantic differential and the factor analysis, it was evaluated words of two pairs which expressed appropriately the sense of evaluator about noise source. Therefore the characteristics of the sound qualify for the vehicle were differentiated. From the results of both the correlation analysis and the multiple factor regression analysis, the sound quality evaluation model for the sense of human hearing was derived and indexed.

신체형 장애(Somatoform disorder)의 개념, 평가, 감별진단 (Concept, Evaluation and Differential Diagnosis of Somatoform Disorder)

  • 김영철
    • 정신신체의학
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    • 제4권2호
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    • pp.254-261
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    • 1996
  • Somatoform disorders are a group of syndromes in which patients focus on and complain of physical symptoms when there is no demonstrable underlying organic pathology or when complaints are in excess of what is expected. The author reviewed concept, sociocultural etiology, differential diagnosis and methods of evaluation of somatoform disorder. The symptoms of Korean culture-specific somatizing cluster, so called Wha-Byung, are discussed.

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감성공학 기법을 활용한 진공청소기의 인체적합도 평가 (Evaluation of the Fitness of Vacuum Cleaners to Human Body using the Semantic Differential Method)

  • 박재희;박수찬
    • 한국감성과학회:학술대회논문집
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    • 한국감성과학회 2000년도 추계학술대회 논문집
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    • pp.160-163
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    • 2000
  • 진공청소기의 인체적합도를 위주로 한 제품평가 방법을 개발하였다. 기존 감성공학에서 자주 사용해온 의미미분법을 근간으로 하고 다속성의사결정론 등을 가미한 평가방법이다. 30 개의 청소기를 대상으로 한 예비 평가실험을 통해 평가항목에 대한 요인분석을 실시한 후 평가항목을 설정하였으며, 평가항목과 상관관계가 높은 제품 속성들을 평가를 위한 설계요소로 설정하였다. 본 실험에서는 예비실험을 통해 개발된 평가방법을 이용해 30 명의 피실험자가 진공청소기를 대상으로 한 평가실험을 수행해 평가방법을 검증하였다.

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Revisited Security Evaluation on Midori-64 against Differential Cryptanalysis

  • Guoyong Han;Hongluan Zhao
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제18권2호
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    • pp.478-493
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    • 2024
  • In this paper, the Mixed Integer Linear Programming (MILP) model is improved for searching differential characteristics of block cipher Midori-64, and 4 search strategies of differential path are given. By using strategy IV, set 1 S-box on the top of the distinguisher to be active, and set 3 S-boxes at the bottom to be active and the difference to be the same, then we obtain a 5-round differential characteristics. Based on the distinguisher, we attack 12-round Midori-64 with data and time complexities of 263 and 2103.83, respectively. To our best knowledge, these results are superior to current ones.