• Journal of Information Technology Applications and Management
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• v.24 no.1
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• pp.169-185
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• 2017

This study proposes a novel recommendation algorithm that reflects the results from trust/distrust network analysis as a solution to enhance prediction accuracy of recommender systems. The recommendation algorithm of our study is based on memory-based collaborative filtering (CF), which is the most popular recommendation algorithm. But, unlike conventional CF, our proposed algorithm considers not only the correlation of the rating patterns between users, but also the results from trust/distrust relationship network analysis (e.g. who are the most trusted/distrusted users?, whom are the target user trust or distrust?) when calculating the similarity between users. To validate the performance of the proposed algorithm, we applied it to a real-world dataset that contained the trust/distrust relationships among users as well as their numeric ratings on movies. As a result, we found that the proposed algorithm outperformed the conventional CF with statistical significance. Also, we found that distrust relationship was more important than trust relationship in measuring similarities between users. This implies that we need to be more careful about negative relationship rather than positive one when tracking and managing social relationships among users.

• Economic and Environmental Geology
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• v.52 no.6
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• pp.605-616
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• 2019

The purpose of this study is to measure the trust and distrust perception of our society about science and technology. In addition to examining trust and distrust in science and technology, we also looked at trust and distrust in geoscience technology. In addition, by comparing the levels of trust and distrust in science and technology and geological resource technology, the implications for improving the reliability of geological resource technology are drawn. This study surveyed male and female office workers over 20 years of age working in the Seoul metropolitan area on the trust and distrust of science and technology. The results of this study show that respondents showed above-average trust in science and technology and geological resource technology. According to the gender or age of respondents, there was no difference in trust and distrust of science and technology and geological resource technology. As a result of examining the difference between trust and distrust in science and technology and geological resource technology, respondents showed higher trust scores in science and technology than geological resource technology. These results suggest that current communications activities on geological resources should be more active and diversified.

• Journal of Korean society of Dental Hygiene
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• v.14 no.6
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• pp.881-886
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• 2014

Objectives: The purpose of the study was to investigate the related factors to dental fear in some adults. Methods: A self-reported questionnaire was filled out by 320 adults in Seoul and Gyeonggi-do from April to June, 2013. Except 14 incomplete answers, data were analyzed by SPSS 18.0 program. The questionnaire consisted of general characteristics of the subjects(7 questions), dental fear related factor(18 questions), distrust for dentist(15 questions), and distrust for dental hygienist(11 questions). The instrument for dental treatment fear was Dental fear Survey(DFS) adapted from Kleinknecht and partly modified by Choi. Out of 20 questions, 18 questions were reconstructed and score by Likert 5 scale. Higher score means higher dental fear. Cronbach alpha was 0.959 in the study. The distrust for dentist and dental hygienist was adapted from Choi and reconstructed and score by Likert 5 scale. Higher score means higher distrust for dentist and dental hygienist. Cronbach alpha was 0.937 in distrust for dentist and 0.874 in distrust for dental hygienist in the study. Results: Those who experienced dental pain tended to have dental fear. The reasons for dental fear were as follows; bad breath(2.96 out of 5 points, hereafter represented as of 2.96/5), dental caries(2.88/5), missing teeth(2.87/5) and tooth pain(2.77/5). The distrust for the dentist was the main dental fear in the adults. Conclusions: The dental fear was closely related to gender, experience of dental pain, oral symptoms and distrust for the dentist. As the psychological pain in the patients was mainly influenced by the trustful atmosphere, it is necessary to make the patient easy before treatment.

• Korean Journal of Culture and Social Issue
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• v.11 no.spc
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• pp.1-20
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• 2005

The present study was to investigate the basis of trust and distrust from the perspective of cultural psychology. We conducted a qualitative approach in terms of the reason to and psychological functions of trust and distrust. We also focused on the viewpoint of the relations between trust and distrust whether they are located on the continuum or independent dimensions. A total of 362 subjects participated in this study. The results revealed that the main reason to trust was interpersonal relationship, which indicated they have known each others well. On the other hand, the reason to distrust was based on the judgement of inconsistency between words and deeds, and other's selfish behavior. Therefore, the basis of trust and distrust was not only different but also located on the continuum. In addition, the principal psychological function of trust was a psychological safety, whereas that of distrust was a psychological anxiety.

• Journal of the Korean Society of Clothing and Textiles
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• v.21 no.8
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• pp.1307-1314
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• 1997

This study investigated the factors that influence consumers' distrust and consumers purchase intention for discounting, specifically discounting of clothes. Through literature, discounting rate, retailer type and brand reputation were identified as influencing factors and were tested. A 2$\times$2$\times$3 factorial design was used to test the effect of each factor on consumers' distrust and consumers' purchase intention for jean products. Retailer type was manipulated as high and low, brand reputation as well-known and less-known, and discount rates 10, 30 and 60%. An convenience sample of 165 female undergraduate students participated in the study. The data were analyzed using SPSS/PC+ The results showed that consumers did distrust discounting claims and consumers' distrust of the claims was greater for less-known brand. In addition, no significant effect of retailor type was found. Further effort is needed to generalize the result to different product categories.

• The Korean Journal of Health Service Management
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• v.8 no.3
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• pp.125-135
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• 2014

The purpose of this study was to investigate the factors related to high school students' fear of dental treatment and distrust for dentists, analyze the relation between these factors and dental health services utilization, and then apply basis data for providing individualized dental health service. The period of the data collection was from November 1st to November 22th 2013, and the subjects were 300 of the first-year high school students in Daugu, and the final analysis data were total 280. using frequency, T-test, correlation and multiple regression analysis, the results of this study were as follows. The higher the distrust for dentist(${\beta}=0.322$) and the burden of dental visit(${\beta}=0.161$), fear of Dental treatment was increased. The larger the fear of Dental treatment and Past experienced pain level, distrust for dentist was increased. therefore, In order to decrease patients' distrust for dentists, good communication between patients and doctors, and efficient treat plans were needed. As a result, patients should have positive attitude on treat. Through early detection and early treatment of oral disease, effective dental health care services with decreasing the fear of dental care system should be provided.

• The Journal of the Korea Contents Association
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• v.17 no.2
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• pp.360-374
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• 2017

This study investigates the effects of trust and distrust on intention to purchase in open markets, based on the ideas derived from previous studies such as coexistence of trust and distrust, and two distinct trustees in open markets-intermediary and sellers. Specifically, this study i) proposes a trust-distrust model of intermediary and sellers, ii) explores the transfer of trust and distrust from intermediary to sellers, and iii) discovers the antecedents of trust and distrust. The empirical validation using Partial Least Squares shows three results as follows. First, trust in intermediary positively affects intention to purchase through the mediated impact of trust in sellers. That is, trust in intermediary transfers to trust in sellers. Second, distrust in intermediary negatively affects intention to purchase through the mediated impact of customers' perceived risk. Third, structural assurance and perceived website quality positively affect trust in intermediary. The results of this research have implications for intermediary firms not only to build trust but also to manage distrust level. However, this study could not identify any antecedent of distrust, so further research for these antecedents will be needed in the future.

• Journal of Korean Society of Water and Wastewater
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• v.28 no.4
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• pp.461-472
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• 2014

The tap water plays a critical role in our daily life by providing clean water for drinking as well as for residential use. Its importance, however, is often hidden and criticized in mass media because drinking the unprocessed tap water as a primary source of drinking water is very low comparing to other countries. This is because survey tool in Korea is often different from those in other countries so their results on the tap water cannot be directly compared without analysis on survey questionnaire. Therefore, we examplified cases showing the difference of questions of each country and discussed the reason why results of tap water intake should not be compared without analysis on the questions. Also, distrust on Arisu without rational reason is known as the first reason of distrust on the tap water. However, it was not the ultimate reason of distrust on the tap water. To verify, we designed survey questions in a tricky way that the same question was asked twice with different choices in the survey questionnaire. Most of the people who distrust Arisu without rational reason at the first question were selected different choices and significantly reduced in the second question. This proved that the ratio of distrust on the tap water is not actually the right reason and that by providing more choices, people's distrust on the tap water without rational reason can turn into more specific reasons.

• Journal of Digital Convergence
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• v.13 no.9
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• pp.21-28
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• 2015

This study shows what the political distrust of three nations was preserved among US, Japan, and South Korea in 2008. According to the World Value Survey research, the political distrust of three nations was reached over 70% when on the basis of national people's consciousness in 2008. Especially in the case of South Korea, the percentage of extreme distrust was the highest compared to the other countries. The reason why South Korea could not manage the nation people's political voice to the government and National Assembly. So consequently political complaining behavior channel should be erected more in the political mechanism. And Korean political parties could not manage the social development and national consolidation. Moreover, attacted the negative effects to society. Political distrust is the worst obstacle in democracy that it will be needed the national consensus to amend it.

• Journal of Digital Convergence
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• v.17 no.3
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• pp.93-106
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• 2019

This study examined how four domains of corporate social responsibility (CSR) affect the trust and distrust of corporations and contribute to their reputation. In particular, this study examined the mediation role of trust and distrust between CSR domains and reputation. The results showed that ethical responsibility and philanthropic responsibility had influence on trust. Legal responsibility had a significant effect on the distrust. Companies that did not fulfill legal responsibilities were more likely to be distrusted. The influence of trust on corporate reputation was significant. The results of this study indicated that trust was a mediator between ethical responsibility, philanthropic responsibility, and reputation. Economic responsibility had a direct influence on reputation. Theoretical and practical implications for strategic approach in each CSR domain are discussed.