• 한국멀티미디어학회논문지
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• 제22권8호
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• pp.930-939
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• 2019

High-Level Architecture(HLA)/Run-Time Infrastructure(RTI) are standards for distributed simulation systems and offer a technology to interconnect them and form one single simulation system. In defense domain, M&S is the only way to prove effectiveness of weapon systems except for Live Fire Testing (LFT). This paper focuses on guided missile simulations in weapon systems for engagement analyses and proposes the integrated flying vehicle model that is based on HLA/RTI. There are a lot of missiles in real world; therefore, we should develop each missile models in M&S in order to apply battlefield scenarios. To deal with the difficulties, in this paper, firstly, I classify these missiles into three models: ballastic, cruise, and surface-to-air missile models, and then I design each missile model and integrates them into a single model. This paper also offers a case study with my integrated flying vehicle model. At the conclusion, this paper presents contributions of this paper.

• 대한간호학회지
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• 제50권2호
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• pp.298-312
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• 2020

Purpose: This study had two objectives: 1) to develop a scale for the process of exercise engagement (SPEE) for prediabetic individuals (PDIs); 2) to validate a structural model for the process of exercise engagement for PDIs. Methods: A cross-sectional survey with simple random sampling was conducted from September 2013 to December 2015 (in Taiwan). A total of 310 PDIs were enrolled for scale development and model validation via item analysis, factor analyses, and structural equation modeling. The Kuo model was used as the basis for developing the Chinese version of the SPEE for PDIs. Results: The SPEE contains five subscales with a total of twenty-one items that account for 54.9% to 65.9% of the total variance explained for assessing participants' process of engagement during exercise. For Kuo model validation, the model measures indicated goodness of fit between the Kuo model and sample data. Analysis further revealed a direct effect between the creating health blueprints (CHB) stage and the spontaneous regular exercise (SRE) stage (β=.60). Conclusion: The SPEE includes five subscales for assessing the psychological transition and behavioral expression at each stage of the process of exercise engagement for PDIs. The SPEE for people with prediabetes provides deeper insights into the factors of behavioral change stages that are required to initiate long-term health care outcomes and avoid developing diabetes. These insights are significant as they allow for patient-specific mapping and behavior modification to effect exercise.

• 한국시뮬레이션학회논문지
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• 제29권2호
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• pp.63-72
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• 2020

다양한 무기체계 중 대표적인 지상 무기체계인 전차는 각국의 핵심 전력 중 하나로, 전차의 운용 개념과 효과도 분석을 통해 과학적 분석 기반의 비용 효과적인 연구개발을 할 수 있다. 이를 위하여 교전 시뮬레이션 기술이 활용될 수 있는데, 전차 무기체계를 모델링함에 있어 전차의 기동, 통신 등과 같은 물리적인 요소뿐만 아니라, 운용교리를 반영한 효과분석을 위하여 전차장 등의 의사결정을 모델링하는 논리 모델도 중요하다. 이 논문에서는 무기체계 통합시뮬레이션 소프트웨어(AddSIM)에서 제공하는 무기체계 모델의 표준 아키텍처인 기본체계모델(Base System Model, BSM)에 맞추어 전차 교전 시뮬레이션에 필요한 전차 BSM 설계방법에 대하여 논한다. 특히 논리 모델을 인간 의사결정 모델에 근거하여 세분화하였으며, DEVS 형식론이라는 수학적 형식론에 기반한 정형적인 모델링 방법으로 모델링하였다. 그 결과 전차 BSM을 계층적이고 모듈화된 형태로 제안하였다. 제안하는 방법은 향후 우리 군의 전차 운용 개념 연구와 전차의 효과분석 등에 활용될 것으로 기대된다.

• 한국프랜차이즈경영연구
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• 제11권2호
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• pp.23-39
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• 2020

Purpose: Social Network Sites(SNS) have been grown up as a public communication channel consumer frequently participate in. Most of food service brands are utilizing social media for advertising recently. As a result of SNS marketing, food service brands anticipate positive outputs from SNS engagement and consumer brand engagement so that we need to verify structural relationship among SNS characteristics, SNS engagement and consumer brand engagement. Research design, data, and methodology: This study identifies that SNS characteristics have effects on SNS engagement and examines relationship between SNS engagement and behavioral engagement. We conceptualize SNS characteristics as information quality, hedonic level and interaction. Furthermore, SNS engagement is composed of SNS participation, positive word of mouth(WOM). In order to verify the purposes of this research, research model and hypotheses were developed. All constructs were measured with multiple items developed and tested in the previous studies. Sample data were collected from 433 online survey panels and analyzed by using SmartPLS 3.2.9. Result: The findings of this research are as follows. First, information quality is positively related with SNS participation. Hedonic level and interaction have impacts on SNS participation and positive WOM respectively. Second, SNS participation has positive effects on positive WOM. Third, both SNS participation and WOM influence behavioral engagement respectively. Conclusions: The implications demonstrate that SNS characteristics such as information quality and hedonic level and interaction exert effects for consumer to participate in SNS brand page. Meanwhile, hedonic level and interaction influence on positive WOM but information quality doesn't. SNS participation and positive WOM affect consumer to engage in specific brand behaviorally as well. Therefore, food service brand marketer is required to manage SNS information quality and hedonic level and interaction among members to encourage SNS participation and positive WOM. As SNS participation and positive WOM increases behavioral engagement of consumer, marketer needs to incentivize SNS participation and look after situation of positive WOM and respond swiftly.

• The Journal of Asian Finance, Economics and Business
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• 제8권4호
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• pp.1003-1012
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• 2021

This study aims to identify the relationship between human resource management practices, work engagement, and proactive behavior of health workers in Gia Lai Province in Vietnam. Based on theoretical frameworks of human resource management, work engagement, and proactive behavior, this study developed a research model and tested its relationship between human resource management practices, work engagement, and the proactive behavior of healthcare workers in Gia Lai Province. This research has used a mixed research method with qualitative and quantitative research. The quantitative research was conducted by survey with 232 health workers. The hypotheses were tested by using structural equation modeling (SEM). The findings showed that human resource management practices have a positive and significant influence on proactive behavior, which directly influences healthcare workers' work engagement. Besides, work engagement plays a role in mediating the influence of human resource management practices on proactive behavior. This research implies that health care organizations should pay more attention to human resource management practices to improve work engagement that assists in increasing employee proactive behavior. Efficient human resource management practices help boost work engagement and, initiality, improve the quality of health care services and minimize errors in treatments.

• 한국보육지원학회지
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• 제18권2호
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• pp.39-56
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• 2022

Objective: The purpose of this study was to investigate the influence of perceived supervisor's servant leadership and teacher self-efficacy for positive teacher-child relationships on work engagement using the path model. Methods: The subjects were 210 teachers working at childcare centers in Daegu and Gyeongbuk Province. Questionnaires were used to investigate perceived supervisor's servant leadership, teacher self-efficacy for positive teacher-child relationships, and work engagement. The collected data were analyzed by Structural Equation Modeling(SEM), Bootstrapping, Pearson Correlation, AMOS 20.0, and SPSS 21.0. Results: First, supervisor's servant leadership had a positive influence on teacher self-efficacy for positive teacher-child relationships. Second, teacher self-efficacy for positive teacher-child relationships had a positive influence on work engagement. Third, supervisor's servant leadership had a positive influence on teacher's work engagement. Fourth, supervisor's servant leadership had an indirec effect on teacher's work engagement by teacher self-efficacy for positive teacher-child relationships. Conclusion/Implications: The results mean teacher self-efficacy for positive teacher-child relationships had more influence on teacher's work engagement. Therefore, it is more useful to promote teacher self-efficacy for positive teacher-child relationships in order to strengthen teacher's work engagement.

• 한국국방경영분석학회지
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• 제17권2호
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• pp.44-53
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• 1991

This paper is aimed to develop a Lanchester type combat model for the direct-fire engagement. This model incorporates number of combatants, inter-firing time, detection time by movement, detection probability by the signature of fire, where the inter-firing time and the detection time are assumed to follow a negative exponential distribution. The approach to modeling is as follows : in the process of an engagement, a combatant takes one of the states('observing' state or 'firing' state), a combatant is initially in the observing state, if the combatant detects a target, he changes his state from 'observing' to 'firing' and will cause attrition to the opposing forces. Thus this transition mechanism is embodied into the differential equation form with each transition rate. A limited examination of the validity has been conducted by comparison with the Monte-Carlo simulation model 'BAGSIM', and with a traditional Deterministic Lanchester model.

• 한국조리학회지
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• 제24권2호
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• pp.8-15
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• 2018

This study examines the effect of abusive supervision on employees' engagement and commitment in the deluxe hotel. Based on total 272 hotel employees obtained from the empirical research, this study verified total 3 hypotheses. The hypothesized relationships in the model were tested simultaneously by using structural equation modelling. Abusive supervision perceived by employees had negative effect on engagement and employees' engagement had positive effect on organizational commitment. Also, abusive supervision perceived by employees did not have a significant effect on organizational commitment, full mediation effect through engagement existed. The study results are expected to be used as data for searching for effective responding ways at an organizational level and find practical ways to further increase employees' positive organizational behavior.

• Journal of Information Technology Applications and Management
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• 제27권6호
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• pp.31-51
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• 2020

During the last decade, social live streaming service like Periscope, Ustream, and YouNow has developed from a niche market into a mainstream activity. In this media environment, social live streaming service has a tremendous impact on the social behaviors of users. Despite the rapid development, there are a lack of studies to make better understand the media environment changes through social live streaming service. This study adopted an affordances approach that leads us to identify six distinctive social affordances (visibility, accessibility, information sharing, social interaction, role-taking, interactive revenue) for user engagement in social live streaming service. Specifically, this study explores the impact of social affordances on perceived flow, followed by user engagement including passive and active engagement. Empirical data analysis with 258 questionnaires suggests that social affordances affected users' flow perception, and flow has an effect on active as well as passive engagement. Contrary to the expectation in a hypothesized research model, only the impact of accessibility on flow was rejected.

• 한국국방경영분석학회지
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• 제28권2호
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• pp.125-136
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• 2002

This paper is aimed to develop Tank Simulation Model. The model simulates Tank-to-Tank engagement and Tank-to-Helicopter engagement by considering Korean battlefield environment. The simulated entities are command tanks, fight tanks, scout helicopters, attack helicopters, anti-tank guided missiles, and decoys. In this paper, we explain the model operational concept, model development and finally we will show some illustrative examples.