• Title/Summary/Keyword: Individual Characteristic

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Optimization of Multiple Characteristics using improved weighted main effects (개량된 가중주효과를 이용한 다특성치 최적화)

  • Cho, Yong-Wook
    • Journal of the Korea Safety Management & Science
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    • v.13 no.4
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    • pp.207-212
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    • 2011
  • Taguchi's robust design methodology has focus only a single characteristic or response, but the quality of most products is seldom defined by a characteristics, and is rather the composite of a family of characteristics which are often interrelated and nearly always measured in a variety of units. The multiple characteristics problem is how to compromise the conflicts among the selected levels of the design parameters for each individual characteristic. This paper presents a Taguchi-like approach based upon improved weighted main effects. One case study is solved by the proposed method.

Determination of Optimal Mean Value and Screening Limit for a Production Process with Logistic Function (로지스틱 함수를 갖는 생산공정에 대한 최적공정평균 및 스크리닝 한계선의 결정)

  • Hong, Sung Hoon
    • Journal of Korean Institute of Industrial Engineers
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    • v.29 no.3
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    • pp.239-246
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    • 2003
  • Individual items are produced continuously from an industrial process. Each item is checked to determine whether it satisfies a lower screening limit for the quality characteristic which is the weight of an expensive ingredient. If it does, it is sold at a regular price; if it does not, it is reprocessed or sold at a reduced price. The process mean may be adjusted to a higher value in order to reduce the proportion of the nonconforming items. Using a higher process mean, however, may result in a higher production cost. In this paper, the optimal process mean and lower screening limit are determined in situations where the probability that an item functions well is given by a logistic function of the quality characteristic. Profit models are constructed which involve four price/cost components; selling prices, cost from an accepted nonconforming item, and reprocessing and inspection costs. Methods of finding the optimal process mean and lower screening limit are presented and numerical examples are given.

Cognitive-behavioral Approach to Patients with Cardiovascular Diseases (심장혈관계 질환 환자들에 대한 인지행동적 접근)

  • Koh, Kyung-Bong
    • Korean Journal of Psychosomatic Medicine
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    • v.3 no.2
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    • pp.185-196
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    • 1995
  • The author reviewed cognitive-behavioral approach to A type behavior pattern and hypertension which are known to be risk factors for coronary heart diseases. Those cognitive distortions frequently found in persons with A type behavior include all-nothing thinking, selective attention, personalization, and attribution of causality. Cognitive-behavioral techniques were also described, which can be applied to management of each characteristic of A type behavior pattern such as time urgency, perfectionism, achievement striving, low self-esteem, excessive work involvement, hostility, and depression. Cognitive-behavioral intervention for hypertension might help the patients to recognize and monitor anger-engendering conflicts, identify characteristic styles of responding, and experiment with alternative ways of managing conflict and anger. Since different features predominate in different individuals, it is necessary to develop treatment plan on the basis of individual characteristics and problems.

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Classification of Trunk Somatotypes and Their Distribution According to the Age Groups of Adult Females (성인 여성 상반신 체형의 분류 및 연령층별 분포)

  • 정명숙;이순원
    • Journal of the Korean Society of Clothing and Textiles
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    • v.21 no.3
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    • pp.571-580
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    • 1997
  • In this study, the trunks of adult females were classified into several kinds of somatotypes and their distribution according to the age groups was shown. The subjects were 343 females of 18 to 49 year-old. The results were as follows: 1. The trunk somatotypes were classified into 5 types. From factor scores and anthropometric values according to each somatotype, it was shown that the somatotype was classified by the relation between the variables of vertical size and those of horizontal size. 2, As the characteristic of the classified somatotype was represented by the scale and its lateral silhouette was suggested, the characteristic of the classified somatotype was Quickly undertook. 3. By suggesting the canonical discriminant function with the unstardardized canonical coefficient, individual trunk somatotype could be discriminated from the measured anthropometric data without modifying the data. 4. From the frequency distribution of the somatotypes in each age group, the dominant somatotype of each age group was shown differently.

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A thermal stability testing and analysis for a surge protector installed in residential distribution board (주택용 분전반에 설치되는 서지보호기의 열적 안전성 시험 및 분석)

  • Kim, Ju-Chul;Park, Jang-Bum;Ki, Che-Ouk
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2009.10a
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    • pp.339-341
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    • 2009
  • Surge Protective Device(SPD) is installed by increasing information and communication equipments and home network equipments by individual home, and the amount of SPD used is increasing by revision industry regulations and strengthening equipotential grounding system. Parts of SPD installed in residential distribution board has ZnO varistor, voltage constraint type devices, but it is exposed to Temporary Overvoltage Characteristic. This thesis analyzes products through Thermal Stability test for SPD for general house and suggests the better method. As results of analysis, Gas Discharge Tube(GDT) to cut off from a leakage current and more than two kinds of safety devices to protect Thermal Runaway were needed.

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A Study on 3D Face Modelling based on Dynamic Muscle Model for Face Animation (얼굴 애니메이션을 위한 동적인 근육모델에 기반한 3차원 얼굴 모델링에 관한 연구)

  • 김형균;오무송
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.7 no.2
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    • pp.322-327
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    • 2003
  • Based on dynamic muscle model to construct efficient face animation in this paper 30 face modelling techniques propose. Composed face muscle by faceline that connect 256 point and this point based on dynamic muscle model, and constructed wireframe because using this. After compose standard model who use wireframe, because using front side and side 2D picture, enforce texture mapping and created 3D individual face model. Used front side of characteristic points and side part for correct mapping, after make face that have texture coordinates using 2D coordinate of front side image and front side characteristic points, constructed face that have texture coordinates using 2D coordinate of side image and side characteristic points.

Reciprocal Effect of the Factors Influencing the Satisfaction of IS Users (정보시스템의 사용자 만족에 영향을 주는 요인의 상호작용효과)

  • Jeong, Gi-Eok;Lee, Dong-Man
    • Asia pacific journal of information systems
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    • v.5 no.2
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    • pp.199-226
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    • 1995
  • This study is an empirical research in order to clarify whether or not the correlation between the satisfaction of users that is the performance measurement factor and the following three:(1) the attitude of users as an individual characteristic, (2) the supports of organization as an organizational characteristic, (3) the routine degree of jobs as an job characteristic, is the same as the previous study results. In addition, another empirical research was done to make clear how organizational supports and routine degree change the attitude and satisfaction of users. This study put a particular emphasis on the moderating effect because the study of this issue has not been done in any previous research. 38 corporations, whose computerization has already been made to some extent and who are listed on the stock exchange market as a leader group, was selected for research, given some hypotheses on the basis of theoretical studies. As results of this empirical study, first, the supports of organization and the routine degree of jobs changed the attitude of users, which was the same as the previous studies. Moreover, the supports of organization, the routine degree of jobs and the attitude of users had an influence on the satisfaction of users. Second, in respect of the correlation between the attitude of users and the satisfaction of users, the routine degree of jobs showed a moderating effect, but the organization supports did not show any moderating effect.

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The Parameter Design of Multiple Characteristics Using EXTOPSIS Model (EXTOPSIS 모형을 이용한 다중특성치의 파라미터설계)

  • Bae, Young-Ju;Kim, Kawng-Soo;Lee, Jin-Gue
    • Journal of Korean Society for Quality Management
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    • v.24 no.3
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    • pp.111-132
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    • 1996
  • Taguchi's parameter design is to determine optimal settings of design parameters of a product or a process such that the characteristics of a product exhibit small variabilities around their target values. His analysis of the problem has focused only on a single characteristic or response, but the quality of most products is seldom defined by a characteristic, and is rather the composite of a great number of characteristics which are often interrelated and nearly always measured in a variety of units. The critical problem in dealing with multiple characteristics is how to compromise the conflicts among the selected levels of the design parameters for each individual characteristic. In this paper, the EXTOPSIS Model using SN ratio which can be optimized by univariate technique is proposed and a parameter design procedure to achieve the optimal compromise among several different response variables is developed. Two existing case studies are solved by the proposed method and the results are compared with ones by the sum of SN ratios, the expected weighted loss, and the desirability function.

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Domestic Design Patent Analysis of Functional Clothing (기능성 의복의 국내 디자인 특허출원 동향분석)

  • Kim, Ho-Jung;Park, Cha-Cheol
    • Fashion & Textile Research Journal
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    • v.13 no.1
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    • pp.1-6
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    • 2011
  • Design patent is a type of industrial design right that is granted on the ornamental design of a functional item. We analyzed domestic design patents that were applied from 1965 until 2008, to the field of functional clothing. Since the year 2000 the number of design patents of functional clothing progressively increased. Design patents applied to the functional clothing field includes sport wear (47%), working clothes (34%), and leisure wear (19%). Design development of the sports wear from the latter half of 1990's has shown a continuously increasing tendency. The most patent applications belonged to the companies(51.4%), followed by individual applicants (46.6%), and the universities or laboratories had the least number of applications (2.0%). In case of working clothes or the leisure wear, the number of design applications focusing on the functional characteristic is higher than that of aesthetic characteristic, however, the number of design applications focusing on the aesthetic characteristic is higher in sportswear.

Field emission characteristics of carbon nanfiber bundles

  • Kim, Sung-Hoon
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.14 no.5
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    • pp.211-214
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    • 2004
  • Carbon nanofiber bundles were formed on silicon substrate using microwave plasma-enhanced chemical vapor deposition system. These bundles were vertically well-grown under the high negative bias voltage condition. The bundles were composed of the individual carbon nanofiber having less than 100 nm diameters. Turn-on voltage of the field emission was measured around 0.8 V/$\mu\textrm{m}$. Fowler-Nordheim plot of the measured values confirmed the field emission characteristic of the measured current.