• 제목/요약/키워드: Pattern-Based

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고성능 침입방지 시스템을 위해 개선한 시그니처 해싱 기반 패턴 매칭 기법 (An Improved Signature Hashing-based Pattern Matching for High Performance IPS)

  • 이영실;김낙현;이훈재
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2010년도 추계학술대회
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    • pp.434-437
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    • 2010
  • 시그니처 기반 필터링(Signature based filtering)은 이미 알려진 공격으로부터 방어하는 방법으로, 침입방지 시스템을 통과하는 패킷의 페이로드와 시그니처라 불리는 공격 패턴들과 비교하여 같으면 그 패킷을 폐기한다. 그러나 시그니처의 개수가 증가함에 따라 하나의 들어온 패킷에 대하여 요구되는 패턴 매칭 시간은 증가하게 되어 패킷의 지연현상이 발생한다. 고성능 침입방지 시스템을 위해서는 보다 효율적인 패턴 매칭 알고리즘이 필요하며, 패턴 매칭의 수행 성능 향상을 위해 가장 중요한 부분은 처리해야 하는 패킷이 도착했을 때, 해당 패킷의 데이터를 룰의 시그니처와 비교하는 횟수를 줄이는데 있다. 이에 본 논문에서는 고성능 침입방지 시스템의 개발을 위해 기존의 제안된 시그니처 해싱 기반의 침입방지 시스템에 패킷 분류를 위한 다차원 검색을 튜플 공간이라는 이차원 공간을 이용하여 검색하는 튜플 공간 패킷 분류 알고리즘과 블룸 필터를 적용한 패턴 매칭 방법을 제안한다.

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패턴 클러스터링 기법에 기반한 배전 변전소 주변압기 사고복구 전략 설계 (Design of Main Transformer Fault Restoration Strategy Based on Pattern Clustering Method in Automated Substation)

  • 고윤석
    • 대한전기학회논문지:전력기술부문A
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    • 제55권10호
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    • pp.410-417
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    • 2006
  • Generally, the training set of maximum $m{\times}L(m+f)$ patterns in the pattern recognition method is required for the real-time bus reconfiguration strategy when a main transformer fault occurs in the distribution substation. Accordingly, to make the application of pattern recognition method possible, the size of the training set must be reduced as efficient level. This Paper proposes a methodology which obtains the minimized training set by applying the pattern clustering method to load patterns of the main transformers and feeders during selected period and to obtain bus reconfiguration strategy based on it. The MaxMin distance clustering algorithm is adopted as the pattern clustering method. The proposed method reduces greatly the number of load patterns to be trained and obtain the satisfactory pattern matching success rate because that it generates the typical pattern clusters by appling the pattern clustering method to load patterns of the main transformers and feeders during selected period. The proposed strategy is designed and implemented in Visual C++ MFC. Finally, availability and accuracy of the proposed methodology and the design is verified from diversity simulation reviews for typical distribution substation.

파라메트릭 프로덕션 패턴 제작을 위한 상의 누드 패턴 개발 (Development of Nude Pattern on Top for Producing Parametric Production Patterns)

  • 김나래;남윤자;박진희
    • 한국의류학회지
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    • 제43권5호
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    • pp.711-724
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    • 2019
  • The automatic drafting of clothing patterns can be realized through an Apparel Cad System when the clothing pattern has a pattern expression in human dimensions. However, it is difficult to apply automatic systems because it is difficult to express the ready-to-wear of various complex designs with one system. This study develops ready-to-wear patterns in an automatic drafting style and also develops nude patterns with human dimension-based drafting styles that can be applied to enable the setting of margins by design. For this purpose, radial body length measurement items and measurement methods were newly defined for female standard dummy and nude pattern systems. The institutional program was developed through the principle of a nude pattern system which is different from the pattern system of the existing system. The nude pattern developed in this study represents a basis and framework for the gradual transformation of the production pattern into the automatic system of the future and as a pattern having an institutional formula based on human dimensions.

인대의 허리 기준선 설정에 따른 입체 패턴 비교 연구 (A Comparative Study of the Draping Pattern based on Setting Waist Base Line of Dress Form)

  • 양정은;김양원;이은경;이해영
    • 한국생활과학회지
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    • 제16권5호
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    • pp.969-977
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    • 2007
  • The research thesis has been intended to make a comparative analysis on the basic bodice pattern and basic skirt pattern changing on the basis of setting waist line of dress form in an effort to set reasonable standards in selecting the standard lines of drees form. The thesis has made the wearing evaluation by producing the sample of upper and lower dress based on A pattern and B pattern. In details, A pattern functions to keep waist line flatly down from lateral waist-right to posterior waist in a little curved state, paralleling bust line and hipline with waistline. And, B pattern functions to keep waistline, bust line and hipline horizontal paralleling with ground surface. SPSS win 10.1 program was used for the analysis of evaluation and t-test. The result is as follows: For basic bodice-front of upper dress, A and B patterns have made little significant difference. With regard to basic bodice-back, B pattern has got the higher evaluation than A pattern, in the pattern stability and appearance. For basic skirt pattern, A pattern has got the lower evaluation in the aspect of total back appearance, back dart, hip line, and waist line, and front drape. Basic bodice pattern of A pattern, which takes on the different horizontal standard lines of dress form depending on the selection of waistline, and basic skirt pattern has scored less in terms of pattern stability and appearance.

『상한론(傷寒論)』 변병진단체계(辨病診斷體系)에 근거하여 마황행인감초석고탕(麻黃杏仁甘草石膏湯) 투여 후 호전된 증례 2례 고찰 (Two Case Reports treated by Mahwang-Haeangin-Gamcho-Seokgo-tang based on Shanghanlun Provisions)

  • 하현이;윤효중;이성준
    • 대한상한금궤의학회지
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    • 제8권1호
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    • pp.67-85
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    • 2016
  • Objectives: In this paper, two cases which showed the meaningful results on the patients' chief complaints were analyzed. The patients were treated with the Mahwang-Haengin-Gamcho-seokgo-tang herbal medication based on Shanghanlun disease pattern identification diagnostic system. Methods: The patients were diagnosed based on Shanghanlun, disease pattern identification diagnostic system. In case 1, the change of menstruation cycle was noted and pre-menstrual discomforts were measured with Menstrual Distress Questionnaire(MDQ). In case 2, Quality of life questionnaire for adult Korean asthmatics (QLQAKA) was used to estimate the quality of the patient's life. Results: All the symptoms were improved after the Mahwang-Haengin-Gamcho-seokgotang treatment. In case 1, the menstruation cycle decreased to 30 days average. MDQ score decreased 143 to 103. In case 2, the change of the QLQAKA score as 1.647 average point is considered as a meaningful improvement. Conclusion: With great difference to a 'Symptom-Medicine' diagnostic system, the disease pattern identification diagnostic system seeks the pathologic pattern through the patient's whole life. More studies and multiple cases based on the diagnostic system are needed to prove this possibility later.

소프트웨어 검사방법을 이용한 VHDL 설계에서의 테스트 패턴 생성 (Test Pattern Generation in VHDL Design using Software Testing Method)

  • 박승규;김종현김동욱
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 1998년도 추계종합학술대회 논문집
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    • pp.1065-1068
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    • 1998
  • This paper proposes a new test generation method. Most of the test generation methods are gate-level based, but our scheme is VHDL based, especially in other word, behavioral-level based. Our test pattern generation method uses software test method. And we generate deterministic test pattern with this method. The purpose of our method is to reduce the time and effort to generate the test patterns for the end-product test of IC.

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정보융합 기법을 이용한 칼라 패턴의 감성 평가 (The emotional evaluation of color pattern based on information fusion)

  • 김성환;엄경배;이준환
    • 한국지능시스템학회:학술대회논문집
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    • 한국퍼지및지능시스템학회 2000년도 추계학술대회 학술발표 논문집
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    • pp.23-27
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    • 2000
  • In this paper, we propose an emotional evaluation model based on information fusion. This model can transform the physical features of a color pattern to the emotional features. Our proposed model consists of the fuzzy logic system and neural network model. The evaluation values produced by them were fused. The model shows comparable performances to the neural network and fuzzy logic system for the approximation of the nonlinear transforms. We believe the evaluated results of a color pattern can be used to the emotion-based color image retrievals.

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음식의 1인1회 분량을 적용한 청소년의 권장식사패턴 고안 (Revision of the Target Pattern based on Single Serving Size of Dishes for Korean Adolescent Meal Plan)

  • 박미진;김영남
    • 대한지역사회영양학회지
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    • 제20권1호
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    • pp.21-29
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    • 2015
  • Objectives: Maintaining a balanced diet is very crucial for adolescents. However, adolescents, who may have a short notion about the amount of food, find it difficult to plan daily meals by applying the target pattern proposed by the Korean Nutrition Society. This study was carried out to revise the target pattern based on cooked dishes instead of raw material food groups as an easier way for Korean adolescents to plan their meals. Methods: Target pattern for Korean adolescents were revised based on the following: $1^{st}$, categorize dish groups, $2^{nd}$, calculate representative values of each dish based on the adolescent' intake amount. $3^{rd}$, assign the recommended number of intake for each dish. Validity of the target pattern for Korean adolescent meal plan was examined by the energy content, energy contribution ratio, and NAR & INQ of nutrients. Results: The 11 dish groups categorized were bab; gook tang gigae; side dishes of meat, fish, egg, legume, kimchi, vegetable, seaweed; and between meal of fruit, and milk dairy product. Based on the representative energy values, recommended number of intake were assigned to each dish. For boys, bab and gook tang gigae: 3 each; meat, fish, egg, and legume: 1 each; kimchi and vegetable: 3 each; seaweed: 1; fruit and milk dairy product: 2 each were assigned. For girls, bab and gook tang gigae: 2 each; meat, fish, egg, and legume: choice of 3 dishes, 1 each; kimchi and vegetable: 3 each; seaweed: 1; fruit and milk dairy product: 2 each were assigned. Energy contents, energy contribution ratio of carbohydrate, protein, and fat for boys and girls were in adequate range. The NARs were 1.0 and INQs were ${\geq}1.0$ for all nutrients examined. Conclusions: Revised dish-based, instead of food-based adolescent target patterns for boys and girls were easier and a valid way of Korean adolescent meal planning.

최적화에 근거한 LAD의 패턴생성 기법 (Optimization-Based Pattern Generation for LAD)

  • 장인용;류홍서
    • 한국경영과학회:학술대회논문집
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    • 한국경영과학회 2005년도 추계학술대회 및 정기총회
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    • pp.409-413
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    • 2005
  • The logical analysis of data(LAD) is an effective Boolean-logic based data mining tool. A critical step in analyzing data by LAD is the pattern generation stage where useful knowledge and hidden structural information in data is discovered in the form of patterns. A conventional method for pattern generation in LAD is based on term enumeration that renders the generation of higher degree patterns practically impossible. In this paper, we present a new optimization-based pattern generation methodology and propose two mathematical programming medels, a mixed 0-1 integer and linear programming(MILP) formulation and a well-studied set covering problem(SCP) formulation for the generation of optimal and heuristic patterns, respectively. With benchmark datasets, we demonstrate the effectiveness of our models by automatically generating with much ease patterns of high complexity that cannot be generated with the conventional approach.

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Projected Local Binary Pattern based Two-Wheelers Detection using Adaboost Algorithm

  • Lee, Yeunghak;Kim, Taesun;Shim, Jaechang
    • Journal of Multimedia Information System
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    • 제1권2호
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    • pp.119-126
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    • 2014
  • We propose a bicycle detection system riding on people based on modified projected local binary pattern(PLBP) for vision based intelligent vehicles. Projection method has robustness for rotation invariant and reducing dimensionality for original image. The features of Local binary pattern(LBP) are fast to compute and simple to implement for object recognition and texture classification area. Moreover, We use uniform pattern to remove the noise. This paper suggests that modified LBP method and projection vector having different weighting values according to the local shape and area in the image. Also our system maintains the simplicity of evaluation of traditional formulation while being more discriminative. Our experimental results show that a bicycle and motorcycle riding on people detection system based on proposed PLBP features achieve higher detection accuracy rate than traditional features.

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