• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.947-953
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• 2006

ATC on-board equipment require realtime embedded software with high level of safety and reliability. To satisfy these requirements, many techniques are applied to the development of software during the lifecycle. In case of software modeling, object-oriented methodology is widening its niche replacing traditional structured methodology and modeling in UML using a CASE tool is a growing trend. In this paper, we modeled ATC on-board software in UML using Rhapsody, which is a modeling tool for realtime embedded software. We modeled the behavior of ATC on-board equipment based on state machine diagram and validated the model using the animation feature provided in the tool. According to our study, the CASE tool based on UML showed high level of applicability in modeling and verifying the software with complex behavioral characteristics.

• 산업공학
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• 제8권2호
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• pp.135-150
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• 1995

An object-oriented simulation modeling environment, AgvTalk, is presented to provide flexible modeling capabilities for simulation of many alternative AGV systems. The hierarchical features and modularity of AgvTalk create possibilities for the extension and reuse of simulation object components. Also, detailed behavior of each object in the AGV system can be modeled easily and exactly in AgvTalk because there are no limiting modeling constructs. The modeling capabilities of AgvTalk is demonstrated by designing and simulating a conceptually different configuration of AGV systems, known as, the tandem configuration. Between the tandem and conventional AGV systems, the characteristics and design methodology in AgvTalk are described. Also, simulations between two systems are compared with AgvTalk in the job shop environment.

• 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.

• 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.

• 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.

• Journal of Nutrition and Health
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• 제55권2호
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• pp.296-308
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• 2022

본 연구는 어머니의 모델링이 유아의 식행동에 미치는 영향을 알아보고자 아이와 어머니의 식사에 대한 행동을 조사하였다. 식행동검사는 아동 영역 58문항, 어머니 영역 20문항으로 구성되어 있으며, 2018년 4월부터 6월까지 어린이집 및 유치원 64개소, 총 1,103명을 조사하였다. 어머니의 식행동 및 식사 지도에 따른 자녀의 식행동을 살펴본 결과, 어머니의 식행동이 불규칙한 경우 자녀의 접근회피성, 과활동성, 불규칙성 점수가 유의하게 높았다. 또한 어머니가 까다로운 경우 자녀의 접근회피성과 감각예민성 점수가 유의하게 높았으며, 자기방임적인 식행동을 보이는 어머니에서 자녀의 과활동성 점수가 유의하게 높게 나타났다. 식사 시 관여도가 높을수록 자녀의 과활동성과 불규칙성 점수가 유의하게 낮았고, 식사 시 규제와 강요가 과할수록 자녀의 과활동성 점수가 유의하게 높은 것으로 나타났다. 위계적 회귀분석을 통해 어머니의 모델링과 식사 지도 유형이 자녀의 식행동에 미치는 영향을 확인한 결과, 자녀의 접근회피성과 감각예민성에는 어머니의 까다로운 식행동과 규제·강요의 식사지도방식이 정적인 영향을 미치며, 자녀의 접근회피성은 어머니의 식사지도방식보다는 까다로운 식행동에 의해 더 큰 영향을 받는 것으로 나타났다. 자녀의 과활동성에는 어머니의 불규칙하고 자기방임적인 식행동과 관심과 규제가 많은 식사 지도 방식이 정적인 영향을 미치며, 어머니의 모델링보다는 식사지도방식에 의해 영향을 많이 받는 것으로 조사되었다. 자녀의 불규칙성에는 어머니의 불규칙하고 까다로운 식행동과 과도한 관심과 규제가 많은 식사 지도 방식이 정적인 영향을 미치며, 식사 지도 방법보다 어머니의 불규칙하고 까다로운 식행동이 더 큰 영향을 미치고 있는 것으로 나타났다. 본 결과를 통해 유아의 올바른 성장과 식생활 형성을 위해서는 자녀가 어머니의 식행동을 모델링할 수 있도록 어머니의 자기 관리적이고 규칙적인 식생활을 통해 자녀들에게 모범을 보일 수 있도록 해야하며, 유아의 영양교육을 계획할 경우 반드시 어머니 교육을 병행하고 아이들의 식행동과 어머니의 식행동을 함께 고려한 맞춤형 솔루션 제공이 중요함을 확인하였다.

• International Journal of Computer Science & Network Security
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• 제21권9호
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• pp.247-260
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• 2021

Data modeling is a process of developing a model to design and develop a data system that supports an organization's various business processes. A conceptual data model represents a technology-independent specification of structure of data to be stored within a database. The model aims to provide richer expressiveness and incorporate a set of semantics to (a) support the design, control, and integrity parts of the data stored in data management structures and (b) coordinate the viewing of connections and ideas on a database. The described structure of the data is often represented in an entity–relationship (ER) model, which was one of the first data-modeling techniques and is likely to continue to be a popular way of characterizing entity classes, attributes, and relationships. This paper attempts to examine the basic ER modeling notions in order to analyze the concepts to which they refer as well as ways to represent them. In such a mission, we apply a new modeling methodology (thinging machine; TM) to ER in terms of its fundamental building constructs, representation entities, relationships, and attributes. The goal of this venture is to further the understanding of data models and enrich their semantics. Three specific contributions to modeling in this context are incorporated: (a) using the TM model's five generic actions to inject processing in the ER structure; (b) relating the single ontological element of TM modeling (i.e., a thing/machine or thimac) to ER entities and relationships; and (c) proposing a high-level integrated, extended ER model that includes structural and time-oriented notions (e.g., events or behavior).

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1998년도 가을 학술발표논문집(II)
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• pp.468-473
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• 1998

The objective of this paper is to develop a consistent algorithm for the finite element analysis for behavior of concrete under cyclic loading using viscoplastic-damage model. For modeling the behavior of concrete under cyclic loading, consistent algorithms of rate-dependent viscoplastic-damage are employed with a Willam-Warnke 5-parameter failure criterion which can consider the softening behavior of concrete and consistent tangent moduli are derived. Using finite element program implemented with the developed algorithms, the algorithms are verified and the behaviors of concrete under cylic loading are simulated and compared with experimental data.

• 한국지능시스템학회논문지
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• 제9권6호
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• pp.627-633
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• 1999

본 논문에서는 면역 시스템에 기반한 자율분산로봇 시스템의 협조 제어 및 군행동 전략의 결정 방법을 제안한다. 면역 시스템은 생체의 자기보호 및 유지시스템이다. 면역 시스템의 유용한 성질은 동적으로 변하는 환경에서 최적의 군행동을 결정하는 문제에 적용 가능하다. 면역 시스템을 자율분산로봇 시스템에 적용하기 위하여 로봇은 B-세포로 환경조건은 항원으로 행동 전략은 항체로 제어파라미터는 T-세포로 각각 모델링 하였다, 환경(항원)변화가 감지되면 각 로봇은 적절한 행동전략(항체)을취한다. 이행동전략은 다른 로봇과의 통신에 의하여 자극 또는 억제을 받는다.(면역 네트워크) 최정적으로 많은 자극을 받은 전략이 군행동 전략으로 채택된다. 이 제어방법은 클론선택과 면역네트워크 가설에 기반을 둔것으로서 최적의 군행동 전략을 결정하는데 이용된다. 또한 제어 파라미터로서 T-세포 모델을 추가함으로서 동적인 환경에서 로봇의 적응능력이 향상되었다.

• 한국식품영양학회지
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• 제35권6호
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• pp.481-490
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• 2022

The influence of the food value consumption type of MZ generation on food choice attribute and sustainable food consumption behavior was studied using structural equation modeling. A survey was conducted on April 11~17, 2022, among panels aged 20 to 39. A total of 350 valid replicates (100%) were analyzed using statistical program SPSS The validity of the measurement instrument was verified through exploratory factor analysis and confirmatory factor analysis. The data reliability was confirmed using Cronbach's alpha coefficient. The hypothesis was verified by performing path analysis through structural equation modeling using AMOS. Regarding the influence of food choice characteristics on sustainable food consumption behavior, health has a significant positive (+) effect on the selection consumption behavior of certified food and local food. Among food value consumption categories social value consumption has a significant negative (-) influence on the consumption behavior of certified food and the choice of local food. Ethical value consumption has a significant positive (+) influence on the selection consumption behavior of certified food and local food. This study is significant because it has identified sustainable food consumption behaviors that domestic consumers can adopt daily. It can use as baseline data for preparing political and institutional measures.