• Earthquakes and Structures
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• 제11권4호
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• pp.563-582
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• 2016

The failure mechanism and maximum collapse load of masonry structures may change significantly under static and dynamic excitations depending on their internal arrangement and material properties. Hence, it is important to understand correctly the nonlinear behavior of masonry structures in order to adequately assess their safety and propose efficient strengthening measures, especially for historical constructions. The discrete element method (DEM) can play an important role in these studies. This paper discusses possible collapse mechanisms and provides a set of parametric analyses by considering the influence of material properties and cross section morphologies on the out of plane strength of masonry walls. Detailed modeling of masonry structures may affect their mechanical strength and displacement capacity. In particular, the structural behavior of stacked and rubble masonry walls, portal frames, simple combinations of masonry piers and arches, and a real structure is discussed using DEM. It is further demonstrated that this structural analysis tool allows obtaining excellent results in the description of the nonlinear behavior of masonry structures.

• 디지털융복합연구
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• 제18권12호
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• pp.217-229
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• 2020

세계적으로, 정보보호는 조직의 필수적인 관리 조건이 되고 있으며, 조직들은 정보보안을 위하여 높은 수준의 자원을 지속적으로 투자하고 있다. 조직 내부자들의 보안 위협은 감소하지 않고 있어, 정보보안 행동 준수를 위한 관심이 필요한 상황이다. 본 연구의 목적은 조직원들의 보안 회피 행동의 원인인 역할갈등을 완화시키기 위한 선행 요인을 제시하는 것이다. 연구는 정보보안 정책을 보유한 조직에서 근무하는 조직원을 대상으로 설문을 실시하였으며, 383개의 표본을 활용하여 구조방정식모델링을 통한 가설 검증을 하였다. 가설 검증 결과, 역할갈등이 회피행동을 증가시키는 것으로 나타났으며, 목표 난이도와 세밀성, 공정성, 신뢰가 역할갈등을 완화하는 것으로 나타났다. 특히, 공정성은 신뢰를 통해 역할갈등과 회피 행동 감소에 영향을 주는 것으로 나타났다. 연구 결과는 조직원의 정보보안 회피행동 원인과 완화 요인을 제시함으로써, 정보보안 수준 향상을 위한 정보보안 전략 수립에 영향을 줄 것으로 판단한다.

• Journal of Welding and Joining
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• 제28권2호
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• pp.60-65
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• 2010

Although two dimensional axi-symmetric modeling is useful for calculating the residual stresses of a cylindrical weldment such as a core barrel, this conventional axi-symmetric modeling can not express the behavior of shrinkage well in the locally heated weld zone. New technique of two dimensional axi-symmetric modeling using a virtual fixture is suggested to simulate the behavior of dimensional changes in the weld zone during the heating period of the welding. The virtual fixture in the model has a role to restrain the expansion of the high temperature heated region, which simulates equivalent intrinsic restraint effect of the weldment. In the restraint condition of the virtual fixture above the critical yield strength, the calculated shrinkages by using the suggested axi-symmetric model agreed well with those measured in a welded mock-up. The calculated residual stresses by using the suggested axi-symmetric model also agreed well with those calculated by using conventional axi-symmetric model which has beenused for calculating residual stresses in the weldment.

• Asia Marketing Journal
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• 제7권3호
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• pp.1-27
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• 2005

본 연구는 서비스 고객의 두 가지 유형의 역할외행동(extra-role behavior)인 시민행동과 불량행동이 서비스 품질지각, 고객만족 및 재구매의도에 미치는 영향을 실증 조사하였다. 스포츠센터 강습프로그램 이용고객을 대상으로 한 구조방정식 분석 결과 고객시민행동과 불량행동은 실증적으로 별개의 개념임을 확인할 수 있었고 구조모델 분석결과 5개의 경로계수가 모두 통계적으로 유의한 것으로 나타났다. 하지만, 고객시민행동과 고객불량행동이 서비스품질지각에 미치는 차별적 영향력은 통계적으로 유의하지 않는 것으로 나타났다. 마지막으로 서비스품질지각은 고객시민행동과 고객만족 및 재구매의도간을 완전 매개하는 것으로 나타났다. 이러한 분석결과를 통해서 서비스 조직이 고객의 두 가지 유형의 역할외행동에 모두 관심을 기울여야 함을 이해할 수 있었다. 그리고 고객의 역할외행동과 기존 마케팅 문헌에서 연구되었던 고객만족 및 재구매의도와의 유의한 관계를 새롭게 이해할 수 있었다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.59.5-59
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• 2001

Multi-agent robot system is the system which executes by cooperating with each robots and controlling several robots. Capability and function of each robot must be considered for cooperation behavior. Furthermore, it is necessary to analyze the given environment and to replace complex task with some simple tasks. Analysis of the given environment and role assignment for the given tasks are composed of discret event. In this paper, the hierarchical controller for multi-agent robot system using the petri-net state diagram is proposed. The proposed modeling method is implemented for soccer robot system. The effectiveness of proposed modeling method is shown through experiment.

• 한국컴퓨터정보학회논문지
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• 제24권11호
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• pp.87-98
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• 2019

최근 많은 조직들은 정보보안 기술에 투자를 통해, 그들의 정보자원 관리 및 보호를 위한 노력을 하고 있다. 그러나, 조직 내부자에 의한 정보보안 위협 요인은 줄지 않고 있다. 본 연구는 내부자들의 정보보안 부정적 행동에 영향을 미치는 요인을 찾는다. 세부적으로, 연구는 정보보안 관련 업무스트레스와 부정적 행동간의 관계를 찾고, 조직공정성이 업무스트레스를 완화하는 것을 제시한다. 즉, 연구 목적은 조직공정성, 정보보안관련 업무스트레스, 부정적 행동간의 연계 매커니즘을 제시하는 것이다. 매커니즘 요인 구성은 정보보안 및 인사조직 관련 선행연구를 통해 도출되었다. 부정적행동은 회피행동과 이탈행동으로 구성하였으며, 보안관련 업무스트레스는 업무갈등과 업무스트레스로 구성된다. 그리고 조직공정성은 분배공정성, 절차공정성, 그리고 정보 공정성으로 구성된다. 연구 모델 검증은 구조방정식 모델링을 통해 실시하였다. 연구모델과 가설을 설립한 이후, 본 연구는 설문항목을 개발하고 정보보안 정책을 보유한 기업에 다니는 조직원 383명의 표본을 확보하였다. 연구 결과는 정보보안 관련 업무스트레스가 조직원들의 부정적 행동을 높이는 것을 증명하였으며, 조직공정성이 조직원에게 발생하는 업무스트레스를 완화하는 것을 제시하였다. 분석 결과는 내부자의 정보보안관련 부정적 행동을 최소화하기 위한 조직적 전략 수립 방향을 제시한다.

• 아동학회지
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• 제30권2호
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• pp.97-112
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• 2009

This study examined pathways from maternal parenting behavior to adolescents' internet addiction through both self-control and depression/anxiety. Participants were 449 $8^{th}$ and $9^{th}$ graders in Seoul. They completed questionnaires on maternal parenting behavior, adolescents' self-control, depression/anxiety, and internet addiction. Data were analyzed by structural equation modeling. Maternal parenting behavior indirectly influenced adolescents' internet addiction through self-control and depression/anxiety. Self-control and depression/anxiety individually mediated between maternal parenting behavior and internet addition. However, maternal parenting behavior didn't directly affect adolescents' internet addiction. Self-control was influenced by maternal parenting behavior and also played a crucial role in preventing adolescents' internet addiction.

• International Journal of Advanced Culture Technology
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• 제9권3호
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• pp.46-54
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• 2021

Bullying prevention and intervention programs often include empathy training. This study investigated how the cognitive empathy and affective empathy are related to bullying involvement. For this purpose, a questionnaire composed of Korean version of Participant Role Questionnaire scale (bullying, defending, and outsider behavior), and Korean version of Basic Empathy Scale (cognitive empathy, and affective empathy) were administered to 598 middle school students from 7 different middle schools in Gyeongnam province of Korea. The results, based on Structural equation modeling, showed that adolescents' cognitive empathy were indirectly linked to bullying behavior of adolescents' through defending behavior and outsider behavior. Adolescents' affective empathy were directly linked to bullying behavior. These findings could guide the development and implementation of prevention programs for adolescents' bulling. Implications and future research are discussed.

• International Journal of Contents
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• 제6권2호
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• pp.41-52
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• 2010

The purpose of this study was to provide a more comprehensive model which integrates a social exchange construct (i.e., organizational commitment) as a mediator to test the relationship between organizational justice and employees' bebaviors such as intent to leaving and custormer-oriented behavior. Based on the data collected from ten Chinese full-service restaurants, this study analyzed the proposed hypotheses through model comparison by using structural equation modeling (SEM) technique with AMOS 7.0. The results indicated that (1)distributive justice had negative influence on employees' turnover intention and positive influence on employees' customer oriented behavior and these influences were fully mediated by employees' affective commitment to their organizations; (2)procedural justice had negative influence on employees' turnover intention and positive influence on customer oriented behavior and these influences were only partially mediated by employees' affective commitment to their organizations. Managerial implications and future research directions were proposed at the last part of this study.

• 유통과학연구
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• 제21권10호
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• pp.63-75
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• 2023

Purpose: This research delves into the relationship between self-leadership and procrastination behavior in banking distribution networks. Based on the self-determination theory, the study explores how organizational commitment mediates the relationship between these variables. Moreover, the research considers the vital role that intrinsic motivation plays in enhancing and reinforcing these connections. Research design and methodology: Using data from 384 bank employees and partial least squares structural equation modeling, the research found evidence to support the theory. This methodological approach enabled the investigation to uncover the intricate links between self-leadership, procrastination behavior, organizational commitment, and intrinsic motivation. Results: The findings strongly support the hypotheses, indicating a negative association between self-leadership and procrastination behavior at the workplace; conversely, a positive correlation was found between self-leadership and organizational commitment. The discovery further strengthens the results that intrinsic motivation amplifies the positive relationship between self-leadership and organizational commitment. Conclusions: This research underscores the importance of cultivating a culture of self-leadership among banking distribution network employees. By doing so, procrastination can be substantially reduced, enhancing both productivity and overall performance. The study's insights are particularly valuable for organizational leaders in the banking sector, as they provide actionable pathways to foster a more committed, motivated, and efficient workforce.