• KSII Transactions on Internet and Information Systems (TIIS)
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• v.12 no.5
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• pp.2396-2413
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• 2018

Trust management is one of the most challenging issues for the highly heterogeneous Internet of Things (IoT). In the context of the IoT, it is difficult to evaluate the node's trustworthiness in the same trust model when a node provides different services. Guaranteeing the availability of the trust management service is another significant challenge because of the dynamic nature of IoT environments. With these issues in mind, this paper propose a robust and adaptive trust management system for the IoT that is able to measure the trustworthiness of nodes based on feedbacks collected from participants in a specific context and ensure the availability of trust management services. The main contributions of our system are: 1) Proposing a partly decentralized trust management framework, which improves the resiliency of the trust mechanism; 2) Proposing an adaptive trust evaluation scheme and a three-dimensional context representation makes trust evaluation more accurate and specific; 3) Enhancing the adaptive trust evaluation scheme by incorporating a bad behavior factor in trust estimation, which efficiently distinguishes misleading feedbacks from On-Off attacks. Simulation results show the good performance of the proposed system and especially show effectiveness against On-Off attacks compared to other trust mechanisms.

• Korea Journal of Hospital Management
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• v.16 no.4
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• pp.111-130
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• 2011

The purpose of this study is to find moderating effects of re-use intention by trust factors between patients satisfaction and hospital images. Survey a general hospital in Seoul was performed, and a total of 202 questionnaires has been analyzed. Result of multiple regression analysis are verified moderating effects by trust factors with hospital image and re-use intention(F=8.223**). And patient satisfaction and re-use intention are verified moderating effects by trust factors(F=4.255*). In addition, classify them into high trust group and low trust group by median split method, even if there are felt the equal level of satisfaction or image that high trust group will be re-visit the hospital better than low trust group. As a result, trust factors must consider different level from satisfaction or image, it is necessary that hospitals will be prepare to improve the trust.

• Korea Journal of Hospital Management
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• v.28 no.3
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• pp.27-38
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• 2023

Objectives: This study explores the impact of age groups on social presence and trust among users of medical artificial intelligence chatbots. Furthermore, we investigate the existence of gender differences within these relationships. Method: We collected data through a survey from people who had interacted with general hospital chatbot services, either by making reservations or seeking consultations. Multiple linear regression analysis was conducted to examine the relationship between general characteristics of study population and social presence and trust of artificial intelligence chatbots. Additionally, we conducted stratified analysis to confirm the presence of gender differences within these relationship. Results: Among 300 participants, those aged 50 and older had higher social presence of artificial intelligence chatbots and greater trust of artificial intelligence chatbots (social presence, 𝛽=0.543, p=0.003; trust, 𝛽=0.787, p=0.000). In stratified by sex, women aged 50 and older had higher social presence and trust of artificial intelligence chatbots compared to those in their 30s age group (social presence, 𝛽 = 0.925, p=0.002; trust, 𝛽=0.645, p=:0.007). However, there was no statistically significant relationship between age and chatbot social presence and trust in men. Conclusion: This study demonstrates that advanced age plays a significant roles in users' social presence and trust in medical artificial intelligence chatbots. Futhermore, our findings reveal gender differences with women aged 50 and older showing the most substantial levels of social presence and trust. Therefore, it is expected that this finding can serve as valuable evidence to enhance the satisfaction of medical institution service users, offering crucial insights into the effective utilization of chatbot services.

• Korea Journal of Hospital Management
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• v.19 no.2
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• pp.89-98
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• 2014

The research was to investigate the effect of trust in supervisor, organizational trust and perception on the shared value on innovative behavior. The data were collected from 334 nurses from University hospital of G city. Data were analyzed with frequency, t-test, ANOVA, Scheffe-test, Pearson's correlation coefficient and hierarchical regression, equipped with SPSS 21.0. The results showed that there was correlation among trust in supervisor, organizational trust and perception, and innovative behavior. Therefore, it is considered that the study is the basis to improve innovative behavior of nurses by providing alternatives for achieving trust in supervisor, organizational trust and perception, for sake of efficient management of human resource of nurse of University hospital. This study was supported by research funds from Chosun Nursing College 2013.

• The Korean Journal of Health Service Management
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• v.7 no.2
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• pp.113-124
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• 2013

The purpose of this study is to investigate of determinants of hospital organization trust affecting to hospital worker's trust in organization. This study was measured levels of trust in organization of hospital workers and 5 determinants of organization trust, organizational fairness, consideration, morality, competence and responsibility toward a society. Levels of trust in organization of hospital workers and determinants of organization trust were assessed using a sample of 190 employees who work at 2 hospitals in Seoul, Kyunggi. Data were collected by self-administered questionnaires from november 22 to 29 in 2012 and analyzed SPSS 18 by using t-test, ANOVA and regression analysis. The results of this study indicate that organizational fairness, consideration and responsibility toward a society among 5 determinants were positively related to levels of trust in organization of hospital workers. Based on these findings, it can be defined that 5 determinants of hospital organization trust influences levels of trust in organization of hospital workers. The implications of this study are discussed and areas for future research are presented.

• The Korean Journal of Franchise Management
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• v.15 no.1
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• pp.28-42
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• 2024

Purpose: ESG management of domestic coffee shops is attracting attention as a capability for corporate sustainability. Therefore, customers who use coffee shops are inevitably affected by ESG policies. By properly operating ESG management, companies can ensure that customers perceive and consume their brands positively. This study examines how ESG management of coffee shops affects customers' perceived authenticity, trust, and brand loyalty, and suggests the direction in which domestic coffee shops should move. Research design, data, and methodology: All variables and hypotheses were determined by previous research, and data were collected for two weeks starting May 23, 2023. 229 people with experience using coffee shops participated in a survey conducted through a Google form, and all 229 responses were used in the analysis. Result: The research results are as follows. All domestic coffee shops presented as examples had a positive impact on brand trust and perceived authenticity through ESG management. However, in the case of environment (E), it can be confirmed that it does not directly affect trust, but indirectly affects trust through perceived authenticity. Conclusions: Domestic coffee shops must establish appropriate policies by recognizing customer interests and opinions in order to significantly increase perceived authenticity and trust through ESG strategies.

• Korean Management Science Review
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• v.31 no.4
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• pp.117-134
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• 2014

Today the concept of corporate social responsibility has become an essential element for coexistence of corporations and the society. In this study the impact of four responsibilities of business organizations proposed by Archie Carroll (economic, legal, ethical, and discretionary) on customer loyalty through the mediating effect of trust and company-consumer identification is analyzed. A questionnaire survey was conducted for four well-known Korean companies (Dong Suh Food, LG Household and Health Care, Samsung Electronics, and Hyundai Motor). After factor analysis, legal and ethical responsibilities were grouped as the same factor, thus three social responsibilities were finally used for hypotheses testing. Major findings were as follows: First, economic responsibilities had positive impact on honesty trust, professionalism trust, favorableness trust, and company-consumer identification, Second, legal/ethical responsibilities were found to have significant effects on honesty trust, favorableness trust, and company-consumer identification. Third, in the case of discretionary responsibilities, professionalism trust, favorableness trust, and company-consumer identification were revealed to have a significant positive relationship. Fourth, only two trust variables (honesty and professionalism) and company-consumer identification had positive influence on the loyalty of customers. These findings are expected to help decision makers to set up corporate objectives and choose action items for corporate social responsibility. At the last part, implications of the study and future research directions were discussed.

• Management & Information Systems Review
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• v.34 no.1
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• pp.51-63
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• 2015

This study investigated how presence will affect the user's trust in educational serious game. To achieve our research purposes, we divide presence into two parts: virtual presence and social presence and identify the relationship between trust and trustworthiness. and also, we separate out trust such as trust in learning and trust in fun according to users purposes. We conduct the survey using the english serious game for university student. The results show that presence significantly influence on trustworthiness and also trustworthiness effect on trust in learning and fun.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.3
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• pp.561-573
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• 2021

Knowing how to build and maintain consumer trust is crucial for e-commerce. Despite the number of empirical studies that have explored the factors that influence consumer trust, none of them considers the relative importance of different antecedents and how they interact to influence consumer trust. Therefore, based on the integrated Decision Making Trial and Evaluation Laboratory (DEMATEL) and Interpretive Structural Modeling (ISM) approaches, we establish a hierarchical structural model, which not only demonstrates the intensity of the relationships but also identifies the interdependence among the drivers of consumer trust in E-commerce. The findings confirm that propensity to trust is the most important determinant of consumer trust. The brand-related factors and platform-related factors are prominent in the process of building trust as they influence consumer trust indirectly through propensity to trust. Geographic location, demographic variables, and high security are identified as the root causes that affect consumer trust through other trust antecedents. Furthermore, the findings of this study offer valuable insights into an important element of e-commerce and provide a useful platform for future research. More represented samples and factors are encouraged for further research to ensure research fairness and minimize consumer distrust and uncertainty.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.6 no.1
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• pp.5-23
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• 2012

Nowadays, most researchers and manufacturers always pay attention on wireless sensor networks (WSNs) due to its potential applications in many regions such as military, industrial and civilian areas. WSNs are the basic components of Internet of Things (IoT) and the key to machine-to-machine communications and the future Internet. Also, the security is an essential element for deploying WSNs. Recently the concept of trust-based mechanism was proposed in WSNs such as traditional cryptographic and authentication mechanisms. However, there is lack a survey on trust management for WSNs, IoT even future Internet. In this paper, we discuss the concept and potential application areas of trust management for WSNs and IoT worlds. Furthermore, we survey different trust management issues (i.e., cluster, aggregation, reputation). Finally, future research directions with respect to trust management in WSNs and future IoT world are provided. We give not only simple WSNs for IoT environments but also a simulated bootstrap platform to provide the discussion of open challenges and solutions for deploying IoT in Future Internet.