• 한국정보시스템학회지:정보시스템연구
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• 제7권1호
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• pp.181-208
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• 1998

In many literatures of model management, various schemes for representing model base schema have proposed. Ultimately, the goal is to arrive at a set of mutually supportive and synergistic methodologies and tools for the modeling problem domain and model base design. This paper focus on how best to structure and represent conceptual model of problem domain and schema of model base. Semantic concepts and modeling constructs are valuable conceptual tools for understanding the structural relationships and constraints involved in an model management environment. To this end, we reviewed the model management literature, and analyzed the constructs of modeling tools of data model management graph-based approach. Although they have good tools but most of them are not enough for the representation of structural relationships and constraints. So we wanted more powerful tools which can represent diverse constructs in a decision support modeling and model base schema design. For the design of a model base, we developed object modeling framework which uses Object Modeling Techniques (OMT). In Object Modeling Framework, model base schema are classified into conceptual schema, logical schema, and physical schema. The conceptual schema represents the user's view of problem domain, and the logical schema represents a model formatted by a particular modeling language. The schema design, this paper proposes an extension of Object Model to overcome some of the limitations exhibited by the OMT. The proposed tool, Extended Object Model(EOM) have diverse constructs for the representation of decision support problem domain and conceptual model base schema.

• 디지털융복합연구
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• 제8권4호
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• pp.109-121
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• 2010

이-러닝은 학교와 직장에서 지식전달 수단으로 각광을 받고 있다. 많은 웹사이트는 인터넷이용자에게 학습, 연구, 경력개발과 관련된 많은 정보를 제공하고 있다. 첫째, 이 연구는 학습과 관련된 웹 사용에 따른 이용자의 인식을 측정하는 도구의 타당화 과정을 보이는데 목적이 있다. 둘째, 이 논문은 대학생들이 자신의 분야와 관련된 학습자료를 얻기 위해 웹 사이트를 이용할 때 그들이 중요한 요인으로 인식하는 주요개념을 확인하고 있다. 이 연구는 다른 분야에서의 웹 이용의 인지와 관련된 주요 개념을 확인하는데 도움을 줄 것이다.

• 근관절건강학회지
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• 제30권2호
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• pp.70-82
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• 2023

Purpose: This study aims to systematically clarify and enhance the understanding of osteoporosis prevention interventions based on Health Belief Model (HBM). The analysis includes HBM constructs, intervention characteristics, and outcomes from prior studies. Methods: We extensively searched eight electronic databases to identify peer-reviewed studies that implemented HBM-based interventions for osteoporosis prevention until June 2023. Results: Initially, 638 articles were identified, and after a rigorous evaluation process, 11 articles were included in the evidence synthesis. The analysis revealed that HBM-based interventions significantly improved likelihood of taking action including knowledge, HBM constructs and adopting preventive behaviors such as calcium intake and exercise. However, most interventions included in this study did not fully encompass all five HBM constructs or specify the particular components adopted. Conclusion: There is a need for additional research and intervention refinement for a more comprehensive understanding of osteoporosis preventive interventions. This should involve a concerted effort to incorporate all HBM constructs into the context of osteoporosis prevention. Thus, more effective interventions promoting optimal preventive behaviors and reducing the burden of osteoporosis can be developed.

• Asian Pacific Journal of Cancer Prevention
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• 제13권4호
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• pp.1687-1692
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• 2012

Background: Few studies have examined theoretically informed constructs related to hepatitis B (HBV) testing, and comparisons across studies are challenging due to lack of uniformity in constructs assessed. The present analysis examined relationships among Health Behavior Framework factors across four Asian American groups to advance the development of theory-based interventions for HBV testing in at-risk populations. Methods: Data were collected from 2007-2010 as part of baseline surveys during four intervention trials promoting HBV testing among Vietnamese-, Hmong-, Korean- and Cambodian-Americans (n = 1,735). Health Behavior Framework constructs assessed included: awareness of HBV, knowledge of transmission routes, perceived susceptibility, perceived severity, doctor recommendation, stigma of HBV infection, and perceived efficacy of testing. Within each group we assessed associations between our intermediate outcome of knowledge of HBV transmission and other constructs, to assess the concurrent validity of our model and instruments. Results: While the absolute levels for Health Behavior Framework factors varied across groups, relationships between knowledge and other factors were generally consistent. This suggests similarities rather than differences with respect to posited drivers of HBV-related behavior. Discussion: Our findings indicate that Health Behavior Framework constructs are applicable to diverse ethnic groups and provide preliminary evidence for the construct validity of the Health Behavior Framework.

• Asian Pacific Journal of Cancer Prevention
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• 제15권17호
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• pp.7309-7316
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• 2014

Background: While many researchers often use a theoretical framework for mammogram repeat interventions, it seems they do not apply an identified mediation analysis method. The aim of this study was to determine the mediators of mammogram replication behavior in two tailored interventions for non-adherent Iranian women. Materials and Methods: A sample population of 184 women over 50 years old in Sanandaj, Iran, was selected for an experiment. Participants were randomly allocated into one of the three conditions: 1) an intervention based on the Health Belief Model (HBM) 2) an intervention based on an integration of the HBM and selected constructs from the Theory of Planned Behavior (TPB), and 3) a control group. Constructs were measured before the intervention, and after a 6-month follow-up. Results: Perceived self-efficacy, behavioral control, and subjective norms were recognized as mediators in the HBM and selected constructs from the TPB intervention. Perceived susceptibility, severity, barriers, self-efficacy and behavioral control met the criteria for mediation in the HBM intervention. Conclusions: This study was successful in establishing mediation in a sample of women. Our findings enrich the literature on mammography repeat, indicating key intervention factors, and relegating redundant ones in the Iranian populations. The use of strategies to increase mammography repeat, such HBM and TPB constructs is suggested to be important for maintaining a screening behavior, once the behavior has been adopted.

• 벤처창업연구
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• 제10권4호
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• pp.59-66
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• 2015

정보통신기술의 급속한 발전은 벤처창업의 기회와 수많은 창업 아이템이 생겨나고 있다. 또한, 요즘과 같은 스마트폰 시대에는 수많은 위치기반 서비스들이 존재한다. 따라서 본 연구에서는 어떤 요인들이 스마트폰 환경의 위치기반 속성이 지속적 사용의도 선호도에 영향을 미치는가를 규명하고자 하였으며, 이를 위해 영향을 주는 요인들에 대하여 선호도 분석을 실행하였다. 즉 첫 번째 단계로, 기존의 경험적 연구들을 통해 이미 알려진 기준 속성들을 정보, 오락, 안전&긴급, 검색&추적 및 광고&상거래라는 5가지로 분류하였다. 두 번째 단계에서는 분류된 속성들 사이의 선호관계 분석을 AHP(analytic hierarchy process) 기법을 이용하여 이루어졌다. 본 연구를 위한 설문은 대전의 H 대학교 학생들을 대상으로 하였으며, 2014년 10월 11일부터 10월 25일 사이에 이루어졌다. 본 연구의 결과 여러 속성 중에 채팅(0.170)이 가장 높은 선호도를 갖는다는 사실을 보여주었다. 또한, 이러한 연구결과에 근거해 다양한 이론적 및 실증적 의미들이 제시되었다.

• 한국정보통신학회논문지
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• 제18권6호
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• pp.1337-1342
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• 2014

스마트 미디어 시대에 사용자 위치기반 서비스에 대한 중요성이 날로 커지고 있으며, 사용자 경험에 대한 인식이 높아지고 있다. 본 연구에서는 이러한 현실을 고려하여 스마트폰 환경에서 위치기반 서비스 속성 경험이 지속사용의도에 어떠한 영향을 미치는지 확인하고자 하였다. 따라서 위치기반 속성이 지속사용의도에 미치는 영향 요인에 관한 선호도를 분석하였다. 선행연구를 바탕으로 1단계 서비스 속성으로 정보 속성, 엔터테인먼트, 안전과 구난, 내비게이션과 트래킹 그리고 광고와 상거래 속성으로 분류하였다. 다음으로 2단계 서비스 속성을 분류하여 계층적 분석기법(AHP; analytic hierarchy process)을 이용하여 요인들 간에 선호도를 분석하였다. 설문조사는 2014년 4월 15부터 2014년 4월 30일까지 부산경남지역 S사 직원을 대상으로 실시하였다. 분석결과 서비스 속성 중에서 내비게이션(0.133)이 가장 선호도가 높게 나타났다. 분석결과를 바탕으로 이론적 실무적 시사점을 제시하고 논의하였다.

• Tissue Engineering and Regenerative Medicine
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• 제15권6호
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• pp.721-733
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• 2018

BACKGROUND: Because three-dimensional (3D) models more closely mimic native tissues, one of the goals of 3D in vitro tissue models is to aid in the development and toxicity screening of new drug therapies. In this study, a 3D skin wound healing model comprising of a collagen type I construct with fibrin-filled defects was developed. METHODS: Optical imaging was used to measure keratinocyte migration in the presence of fibroblasts over 7 days onto the fibrin-filled defects. Additionally, cell viability and growth of fibroblasts and keratinocytes was measured using the $alamarBlue^{(R)}$ assay and changes in the mechanical stiffness of the 3D construct was monitored using compressive indentation testing. RESULTS: Keratinocyte migration rate was significantly increased in the presence of fibroblasts with the cells reaching the center of the defect as early as day 3 in the co-culture constructs compared to day 7 for the control keratinocyte monoculture constructs. Additionally, constructs with the greatest rate of keratinocyte migration had reduced cell growth. When fibroblasts were cultured alone in the wound healing construct, there was a 1.3 to 3.4-fold increase in cell growth and a 1.2 to 1.4-fold increase in cell growth for keratinocyte monocultures. However, co-culture constructs exhibited no significant growth over 7 days. Finally, mechanical testing showed that fibroblasts and keratinocytes had varying effects on matrix stiffness with fibroblasts degrading the constructs while keratinocytes increased the construct's stiffness. CONCLUSION: This 3D in vitro wound healing model is a step towards developing a mimetic construct that recapitulates the complex microenvironment of healing wounds and could aid in the early studies of novel therapeutics that promote migration and proliferation of epithelial cells.

• Journal of Nutrition and Health
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• 제54권1호
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• pp.67-75
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• 2021

Purpose: The theory of planned behavior (TPB) was used to investigate how the psychological constructs of attitude, subjective norms, and perceived behavioral control (PBC) affect the individual intention of behaviors in adults. Social support is also important in enabling the stability of healthy eating. This study examined the relationship between three major constructs of TPB as well as social support and the intention of healthy dietary behaviors in adults residing in Beijing, China using the extended TPB. Methods: The study questionnaire was based on previously validated items and an online survey was conducted from October to November 2020. Using a total of 244 Chinese adults in Beijing, multiple linear regression analysis was used to test the relationships between three major constructs of TPB as well as the social support and intention of healthy eating. Results: Among the three major constructs of TPB, subjective norms (p = 0.044) and PBC (p = 0.000) were significantly related to the behavioral intention of healthy eating (p = 0.000), and the model explained 76.6% of the variance of the behavioral intention from the three constructs of TPB included in the multiple linear regression model. The additional inclusion of social support to the model did not increase the explanatory power of the model to describe the behavioral intention of healthy eating. The subjective norms (p = 0.040) and PBC (p = 0.000) were still significant where social support did not explain the variance of the behavioral intention adequately. Conclusion: The subjective norms and PBC may be potential determinants of the behavioral intention of healthy eating in adults residing in Beijing, China. These study results can be used to promote healthy eating in Chinese adults living in urban areas. Large-scale intervention studies will be needed to determine if social norms and PBC predict the actual behaviors of healthy eating in Chinese adults.

• 한국IT서비스학회지
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• 제12권4호
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• pp.59-75
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• 2013

As education environment is changing rapidly and competition of education industry is more intensive, the importance of service view about education is increasing as a differential competitive advantage. This study attempted to investigate the impact of service convenience as a different competitive advantage on e-learning acceptance by using TAM. The purpose of this study is to examine how five-dimensional service convenience constructs(decision convenience, access convenience, transaction convenience, benefit convenience, post-benefit convenience) affect consumers' perceived usefulness, attitude and usage intention. For this study, data were gathered from respondents who bought or used e-learning services and analyzed by structural equation model. Among the five-dimensional service convenience constructs, two constructs(benefit convenience, post-benefit convenience) affected consumers' positive perceived usefulness, attitude and usage intention about e-learning service. The results show that management and investment to improve benefit and post-benefit service convenience make consumers' positive attitude and usage intention about e-learning service.