• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.155.3-155
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• 2001

Researches of multi-robot system are active in these days. The most remarkable characteristic of multirobot system is that the robots work cooperatively and achieve the task which a single robot cannot do. It is essential to investigate number effect of multi-robot system. In this paper, we chose foraging task and investigated their behavior. At first, we investigated the foraging behavior in case that interaction range is Infinite. Secondly, we investigated the behavior in case that interaction range is finite. In both case, we find out there is an optimum interaction duration.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2004년도 춘계학술발표회
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• pp.146-153
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• 2004

The goals of this study are to investigate the feasibility of the reference state approach in determining the generalized soil-water characteristic curve that is essential for characterization of unsaturated soil behavior. The soil-water characteristic curves are obtained from a number of specimens of fine-grained residual soils compacted with different void ratios. Based on the experimental test results, the feasibility of using the liquid limit state as the reference state for predicting the soil-water characteristic curve are verified. Finally, through the regression analysis of experimental data using the equation of Fredlund and Xing (1994), a reliable method is proposed to predict the generalized soil-water characteristic curve of fine-grained residual soils using the liquid limit state as the reference.

• 한국전산구조공학회논문집
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• 제30권1호
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• pp.23-30
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• 2017

입자 복합재료는 입자의 형상, 크기 그리고 분포의 산포특성으로 인해 물성치의 편차가 존재하고, 입자 복합재료를 사용한 시스템의 거동 또한 산포가 존재한다. 하지만 입자의 산포특성을 고려하기 어려우므로 균질화법을 사용하여 시스템의 거동을 해석하거나 국부영역에서 미세구조를 적용하여 해석한다. 본 연구에서는 입자의 랜덤적 산포특성을 고려하기 위해 RMDFs(random morphology description functions)를 사용하여 랜덤 미세구조를 생성하였고, 단면 1차 모멘트를 사용하여 가우시안 함수의 수(N)와 입자의 산포특성의 관계를 분석하였다. 그리고 랜덤 미세구조 구조물의 거동을 분석하기 위하여 랜덤 미세구조를 전체에 반영한 외팔보에 multi-scale 해석을 수행하였다. 그 결과 입자의 산포특성과 외팔보의 처짐의 편차는 N의 증가에 따라 감소하고 N=200에서 수렴하는 것을 확인하였다.

• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2000년도 특별강연 및 추계학술발표대회 개요집
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• pp.121-123
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• 2000

• 대한수학교육학회지:수학교육학연구
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• 제21권3호
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• pp.279-294
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• 2011

본 연구는 중등 영재학급 학생들 중 수학영재들의 도덕 판단 능력 수준을 확인하고 수학적 행동 특성 중에서 어떠한 요인이 도덕 판단 능력에 영향을 미치는지를 알아보고자 하였다. 이를 위해 수학적 행동 특성 검사와 도덕 판단 능력 검사의 실시 결과를 바탕으로 SPSS 12.0을 사용하여 이 둘 간의 상관 분석과 회귀 분석을 실시하였다. 또한, KDIT 점수가 가장 높은 학생을 대상으로 면담을 통하여 양적 실험 결과를 뒷받침하는 자료로 활용하고자 하였다. 학생과의 면담은 구조화된 질문지를 통하여 어떤 수학적 행동특성 요인이 자신의 도덕 판단 능력에 영향을 미쳤는지를 살펴보았다.

• 콘크리트학회논문집
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• 제18권1호
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• pp.73-82
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• 2006

최근까지의 거푸집 공법은 거푸집의 설치 및 탈형공정에 따른 공기연장, 인건비 상승에 따른 추가적인 비용소모, 거푸집 탈형후 발생되는 건설 폐자재로 인한 환경문제 유발 등의 직 간접적인 문제를 발생시켜 왔다. 따라서 본 연구에서는 이와 같은 문제점을 해결하고자 스테인레스 강섬유를 이용한 고성능 영구거푸집 공법에 대한 재료 및 구조적 거동특성을 분석하였다. 재료적 거동특성의 경우, 고성능 영구거푸집의 휨 거동에 있어 안정적인 연성거동 특성을 나타내었으며 후타설 콘크리트와의 부착성능도 우수한 것으로 나타났다. 구조적 거동특성의 경우, 고성능 영구거푸집의 압축단 및 인장단 거동특성이 분석되었으며 실험결과, 추가적인 보강성능 이외에 충분한 구조거동 특성을 발휘한 것으로 분석되었다.

• 한국지진공학회논문집
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• 제17권1호
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• pp.1-10
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• 2013

In order to predict inelastic displacement response without nonlinear dynamic analysis, the equal displacement rule can be used for the structures with longer natural periods than the characteristic period, $T_g$, of earthquake record. In the period range longer than $T_g$, peak displacement responses of elastic systems are equal or larger than those of inelastic systems. In the period range shorter than $T_g$, opposite trend occurs. In the equal displacement rule, it is assumed that peak displacement of inelastic system with longer natural period than $T_g$ equals to that of elastic system with same natural period. The equal displacement rule is very useful for seismic design purpose of structures with longer natural period than $T_g$. In the period range shorter than $T_g$, the peak displacement of inelastic system can be simply evaluated from the peak displacement of elastic system by using the inelastic displacement ratio, which is defined as the ratio of the peak inelastic displacement to the peak elastic displacement. Smooth hysteretic behavior is more similar to actual response of real structural system than a piece-wise linear hysteretic behavior such as bilinear or stiffness degrading behaviors. In this paper, the inelastic displacement ratios of the smooth hysteretic behavior system are evaluated for far-fault and near-fault earthquakes. The simple formula of inelastic displacement ratio considering the effect of $T_g$ is proposed.

• 한국경영과학회지
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• 제41권4호
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• pp.75-93
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• 2016

This study aims at analyzing the relationship between team characteristic and innovation performance. The mediating effect of creative climate on the team characteristic and innovation performance is also measured. Based upon literature review, individual creative characteristics, team diversity, team cohesion, task characteristics are presented as antecedents of team characteristic. Creative climate affects the creative behavior and innovative performance. Creative climate is measured as the Team Climate Inventory (TCI) proposed by Anderson & West (1998) including goal, participative-autonomy and innovative-support. Data were collected from 186 survey responses (54 Teams) out of total 462 (69 teams) from the R&D department of a major ICT firm in Korea. Empirical results show the diversity, cohesion, job characteristic, individual creative characteristic have a positive effect on the creative climate and innovation performance. The participative-autonomy climate factor appears to mediate the relationship between team characteristic (diversity, cohesion, job and individual characteristics) and innovation performance. However, the mediating effects of goals and innovative-support factors were not significant statistically. It was confirmed that the organization can contribute to improve the team innovation performance by facilitating a autonomy and participative climate as well as fostering the team characteristic.

• Steel and Composite Structures
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• 제2권4호
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• pp.277-296
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• 2002

A research investigation of single bolt lap-plate connection load-deformation behavior is presented. Each important characteristic of this behavior is evaluated and two methods for analytically approximating the behavior are developed and presented. The first of these methods is a component method in which the behavior of the connection is modeled as a combination of the behavior of the parts. The second method utilizes a number of parametric relationships that relate the connection parameters to coefficients of two non-linear continuous analytical curves. The test results from four independent experimental programs that investigated the behavior of single bolt lap-plate connections are used in the development and verification of these methods.

• 복식문화연구
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• 제10권5호
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• pp.565-577
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• 2002

Impulsive buying behavior is an important aspect of consumer behavior and is of significant interest to researchers and retail management alike. It is a familiar from of in-apparel store behavior because of its social-psychological characteristics. The objectives of this study were to find out the variable(5) influencing impulsive and non-impulsive buying behavior, as well as to investigate the causal relationships between variables related to impulsive buying behaviors in boutiques. A questionnaire was completed by 345 boutiques customers in Busan, Korea. Demographics showed that consumers were more educated and had higher incomes than average consumers in Korea. Data was analysed by discriminant analysis and path analysis. Results showed that "Clothing involvement" was the most influencing variable determined impulsive buying behavior. "Self-monitoring" proved negatively influencing on impulsive buying behavior in boutiques. Consumers with low interest in apparel reacted positively to the in-store purchasing situation, and did negatively to their affective factors. As a result, they provided the useful information for consumer behavior researchers and boutiques retailers.