• 한국지반공학회논문집
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• 제25권10호
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• pp.111-122
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• 2009

지반에 포함된 입자의 용해작용은 흙의 강도를 저하시키고, 지하구조물의 침하를 발생시킨다. 본 논문에서는 입자용해시 혼합재의 물리적 특성 변화를 조사하고자 하였다. 침하량 측정과 전단파 측정과 같은 거시적 반응을 평가하기 위해, 소금과 모래로 구성된 혼합재를 사용하였다. 또한, 광탄성(photoelastic) 디스크와 얼음 디스크 혼합재를 이용하여 힘 연결고리(force chain), 간극, 접촉점수(coordination number), 그리고 수평력 변화와 같은 미시적 거동을 분석하였다. 소금-모래 혼합재에서 전단파는 압밀셀에 설치된 다단의 벤더 엘리먼트로 측정되었고, 광탄성 디스크-얼음 디스크 혼합재의 역학적 거동은 로드셀과 디지털 이미지를 이용하여 분석되었다. 실험결과, 소금의 용해시 전단파 속도는 초기에는 감소한 후에 증가한 후 일정한 값으로 수렴하였다. 용해가능 입자의 크기가 커질수록 그리고 입자패킹이 불규칙해질수록 입자용해시 수평력의 변화가 더 커지는 것을 알 수 있었다. 용해 후, 간극비는 증가했고, 접촉점수는 감소하였다. 본 연구에서는 힘 연결고리, 간극비, 접촉점수와 같은 입자의 거동변화가 전단파 속도와 전체시스템의 수평력 변화 같은 전체적인 거동에 영향을 주는 것으로 나타났다.

• 한국유통학회지:유통연구
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• 제17권3호
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• pp.93-113
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• 2012

갈등에 대한 다양한 연구가 이루어졌음에도 불구하고, 갈등해결을 통한 관계학습의 관점에서 조직적(interorganizational)으로 접근한 연구는 매우 부족한 실정이다. 본 연구에서는 갈등해결 매커니즘을 통해, 유통경로 구성원들이 어떻게 관계학습을 구축할 수 있는지, 그리고 이것들이 경로관계의 성과에 어떠한 영향을 미치는지 살펴보고 있다. 이와 같은 목적으로 국내 유통업체의 협력업체 영업담당자 490명을 대상으로 설문조사를 실시한 결과, 갈등해결에 있어 협력행동은 관계학습의 세 가지 과정인 정보공유, 공동이해와 해석, 관계특유기억 모두를 강화한 반면, 회피행동은 정보공유만 약화시키는 것으로 나타났다. 공동이해와 해석, 관계특유기억은 유통경로의 성과인 효과성과 효율성을 강화시킨 반면, 정보공유는 성과에 영향을 미치지 않았다.

• 패션비즈니스
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• 제7권2호
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• pp.143-155
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• 2003

The purpose of this study were to investigate 1) Values placed upon born hereditary appearance and a made up appearance, 2)examined for points of body and clothing and 3)discrepancy in opinions about Coordination system of 3D Virtual Model This study chose qualitative research approach in-depth interviews were from December 12, 2002, to February 20, 2003. The subjects of the study were 12 women aged in twenties 12 women aged over forty. The results of this study were as follows. 1. Women aged in their twenties defined appearance as follows. there are important a made up appearance, Appearance is looking at point of view from body shape to face, makeup, hair style, body image, cosmetic surgery, clothing and is looking at the whole point of view from hair to tiptoe. This seems to include attitude, personality, behavior, images, and feeling. 2. Regarding body image Women aged in their twenties prefer a slender figure. Women aged in their twenties exerts all possible efforts to have an attractive body through dress well. 3. Regarding body image Women aged in their twenties prefer coordinate to system of 3D virtual model.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제22권4호
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• pp.307-313
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• 2011

Objectives : This study explored the clinical differences in attention-deficit hyperactivity disorder (ADHD) patients with and without developmental coordination disorder (DCD). Methods : Participants were 49 children and adolescents with ages between 6 and 18 years. These subjects were placed into 2 groups: ADHD without DCD (24) and ADHD with DCD (25). We used several evaluation tools on both groups: the Affective Disorders and Schizophrenia-Present and Lifetime Version- Korean Version (K-SADS-PL), Wechsler Intelligence Scale for Children-III (WISC-IIII), Child Behavior Check List (CBCL), Korean Personality Rating Scale for Children (K-PRC), and Bruininks-Osretsky Test of Motor (BOT-2). Results : Patients with both ADHD and DCD had a lower performance intelligence quotient and more internal and external behavioral symptoms than patients with ADHD but not DCD. It is possible that patients with ADHD and motor coordination problems should be noticed earlier and given intensive treatment.

• Journal of Magnetics
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• 제19권4호
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• pp.315-322
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• 2014

In this work, Artificial Neural Network (ANN) was used to model the dynamic behavior of ferromagnetic hysteresis derived from performing the mean-field analysis on the Ising model. The effect of field parameters and system structure (via coordination number) on dynamic critical points was elucidated. The Ising magnetization equation was drawn from mean-field picture where the steady hysteresis loops were extracted, and series of the dynamic critical points for constructing dynamic phase-diagram were depicted. From the dynamic critical points, the field parameters and the coordination number were treated as inputs whereas the dynamic critical temperature was considered as the output of the ANN. The input-output datasets were divided into training, validating and testing datasets. The number of neurons in hidden layer was varied in structuring ANN network with highest accuracy. The network was then used to predict dynamic critical points of the untrained input. The predicted and the targeted outputs were found to match well over an extensive range even for systems with different structures and field parameters. This therefore confirms the ANN capabilities and indicates the ANN ability in modeling the ferromagnetic dynamic hysteresis behavior for establishing the dynamic-phase-diagram.

• 복식문화연구
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• 제17권2호
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• pp.255-269
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• 2009

The purpose of this study was to understand the internet fashion shopping behavior of men in their 20s, and to develop the internet shopping website with situation-based clothing coordination services for male comsumer in their 20s. The study was implemented through a normative descriptive survey method using a questionnaire. The survey was conducted in April and May 2006, and the sample group consisted of 280 men in their 20s from Busan and the provinces of Gyeongnam and Gyeongbuk. The data was analyzed by following statistical methods: frequency analysis, one-way-ANOV A, and Scheffe's test. The results are as follow: first, regarding internet the usage trend of male consumers in their 20s, it was shown that they usually spent more than 15 minutes and less than 30 minutes for internet shopping the price range from their experiences of clothing purchases was relatively high for they bought jackets or suits was relatively high. Second, an analysis on men's pattern of clothing purchase showed that many respondents purchase single items such as shirts or pants online. Third, in terms of their experiences of online purchase of coordinated clothes, 69% said "none." Yet, they showed positive assessment to a question whether they are willing to purchase clothes by using a situation-based coordination service or a 1:1 online coordination services. Fourth, the relationship between consumers' reactions to online situation-based clothing coordination services and respondents' demographic characteristics showed statistically significant different results in terms of occupation.

• International Journal of Costume and Fashion
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• 제12권2호
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• pp.33-40
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• 2012

The purpose of this study was to investigate the differences of clothing majors and non-majors in clothing knowledge and consumption behavior. Subjective and objective knowledge were compared and factors of clothing consumption behavior were analyzed across the two groups. The subjects of this study were female student who went to University in Seoul. Data from 150 college female students were analyzed using SPSS. Results indicated that clothing majors had significantly higher level of clothing knowledge. The differences were smaller for subjective knowledge levels than objective knowledge levels. Clothing majors tended to reform their clothes and coordinate their clothing items better than non-majors. They considered styles more importantly than brands but have some level of conformity. Among clothing consumption behavior factors, reform ability and coordination ability significantly affected clothing knowledge.

• Geomechanics and Engineering
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• 제12권4호
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• pp.639-655
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• 2017

The binary mixture consists of two types of granular media with different physical attributes and sizes, which can be characterized by the percentage of large granules by weight (P) and the particle size ratio (${\alpha}$). Researchers determine that two thresholds ($P_S$ and $P_L$) exist for the peak shear strength of binary mixtures, i.e., at $P{\leq}P_S$, the peak shear strength is controlled by the small granules; at $P{\leq}P_L$, the peak shear strength is controlled by the large granules; at $P_S{\leq}P{\leq}P_L$, the peak shear strength is governed by both the large and small granules. However, the thresholds of binary mixtures with different ${\alpha}$ values, and the explanation related to the inner details of binary mixtures to account for why these thresholds exist, require further confirmation. This paper considers the mechanical behavior of binary mixtures with DEM analysis. The thresholds of binary mixtures are found to be strongly related to their coordination numbers $Z_L$ for all values of ${\alpha}$, where $Z_L$ denotes the partial coordination number only between the large particles. The arrangement structure of the large particles is examined when P approaches the thresholds, and a similar arrangement structure of large particles is formed in both 2D and 3D particle systems.

• 대한전기학회논문지:시스템및제어부문D
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• 제53권2호
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• pp.127-134
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• 2004

In this paper, human motor behaving model based sensory motor coordination(SMC) algorithm is implemented on robotic grasping task. Compare to conventional SMC models which connect sensor to motor directly, the proposed method used biologically inspired human behaving system in conjunction with SMC algorithm for fast grasping force control of robot arm. To characterize various grasping objects, pressure sensors on hand gripper were used. Measured sensory data are simultaneously transferred to perceptual mechanism(PM) and long term memory(LTM), and then the sensory information is forwarded to the fastest channel among several information-processing flows in human motor system. In this model, two motor learning routes are proposed. One of the route uses PM and the other uses short term memory(STM) and LTM structure. Through motor learning procedure, successful information is transferred from STM to LTM. Also, LTM data are used for next moor plan as reference information. STM is designed to single layered perception neural network to generate fast motor plan and receive required data which comes from LTM. Experimental results showed that proposed method can control of the grasping force adaptable to various shapes and types of greasing objects, and also it showed quicker grasping-behavior lumining time compare to simple feedback system.

• 반도체디스플레이기술학회지
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• 제20권4호
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• pp.16-22
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• 2021

We search for an appropriate initial adsorption coordination of precursor on surface by using genetic algorithm (GA) and density functional theory. SiH₄ and Al(CH₃)₃ as precursor, and OH-terminated Si (001) as surface are used for this study. Selection, crossover, and mutation as hyperparameters of GA are applied to search for the adsorption coordination of the precursors on the surface as a function of generation. Bond distances between precursors and the surface are used to explain the adsorption behavior of the precursors.