• Journal of Korea Society of Industrial Information Systems
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• v.20 no.1
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• pp.103-112
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• 2015

Because of increased global competition, rapid technology development, and shorten product life cycle, manufacturing firms needed to quickly adapt to the changes of customer and competitive environment. During last 20 years, lean production and agile manufacturing have been used to enhance the efficiency and effectiveness of manufacturing firms. This study is purposed to examine the antecedents of agility and to statistically analyze not only the effect of antecedents on agility but also the effect of agility on business performance. This study used the structural equation model and found that intra-organizational cooperation, inter-organizational cooperation, and mutual trust had the significant effects on agility. And it was found that agility had a significant effect on operation performance and strategic performance. Agility has been one of important competitive advantages enhancing the supply chain process and firm's competitiveness. This study contributes to widen the practices of agility capability.

• Journal of Korean Society of Transportation
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• v.20 no.2
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• pp.39-46
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• 2002

There are many studies which reveal most of the accidents are related to pilot errors. Looking at each phase of flight, the accidents which occurred at the segments of take-off and landing consist of 70%, cause these phases need precise cooperations between pilots and ATC specialists to make sure every instructions understood and instruments to be normal. Therefore, the accidents of these phases leave great regrets and the price was enormous to people and equipments. Until now, most of the studies investigate the accident itself and very few show the relationships between pilots and air traffic controllers. This study analyzes the inter-dependence, mutual trust, dependability and satisfaction between them who play an important parts in flight. Based upon the findings, the impacts of relationships between them to aviation safety could be explained. As for the results, the inter-dependence, mutual trust, dependability and satisfaction are relatively high but the standpoint is little bit different for each of them. These findings suggest that the improvements of relationships between them need more effort than that of the present to ensure the aviation safety and efficient flights.

• The KIPS Transactions:PartC
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• v.16C no.5
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• pp.589-596
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• 2009

Until now, some protocols have been presented to provide vehicle's anonymity and unlinkability in VANET by means of issuing multiple anonymous certificates to each vehicle from the trust authority, or shot-time anonymous certificate to a vehicle after mutual authentication between a Roadside Unit (RSU) and the vehicle. However, these protocols have high overheads of the trust authority, RSUs and vehicles for generating anonymous certificate. In this paper, we propose an efficient anonymous authentication protocol, in which RSUs can issue multiple shot-time anonymous certificates to a vehicle to alleviate system overheads for mutual authentication between vehicles and RSUs. Several simulations are conducted to verify the efficiency of the proposed protocol in terms of RSU valid serve ratio and vehicle's computational costs. Moreover, the proposed protocol provides unlinkability and traceability when multiple RSUs are compromised, whereas previous protocols do not provide unlinkability and traceability.

• Journal of Internet Computing and Services
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• v.13 no.6
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• pp.55-62
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• 2012

Grid web applications by standard Web technology are increasingly used to provide grid service to users as normal Web user interface and service. It is however difficult to integrate a grid security system such as Grid Security Infrastructure (GSI) into Web applications because the delegation way of standard Web security is not the same as the one of Grid security. This can be solved by allowing Web applications to get a Grid credential by using an online credential repository system such as MyProxy. In this paper, we investigate the problem that occurs when MyProxy, which assumes mutual trust between a user and Grid web application, is adapted for achieving security integration between Web and Grid, and we propose a new Grid proxy delegation service to delegate a Grid credential to the Web without assuming mutual trust. In the service, the X.509 proxy delegation process is added to OAuth protocol for credential exchange, and authentication can be done by an external service such as OpenID. So, users can login onto the Grid web application in a single sign-on manner, and are allowed to securely delegate and retrieve multiple credentials for one or more Virtual Organizations.

• Journal of Korea Entertainment Industry Association
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• v.13 no.1
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• pp.157-166
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• 2019

The purpose of this study was to investigate the level of professor trust, achievement motivation, and self-efficacy of health college students in G university, and to analyze the relationship between these variables and its influential factors to provide basic data on improvement of teaching methods and academic achievement. The study period was March 1 through 30, 2018. Study subjects were 276 health college students in G university located in G. City. The survey was conducted by the researcher, described the purpose of the study and distributed and collected the questionnaires. The questionnaire consisted of professor trust 27 items, achievement motivation 28 items and self-efficacy 24 items. As a result, professor trust was higher when the grade was lower and the degree of major satisfaction was better, and in order of the division of the health administration, the department of speech-language therapy, and the department of nursing. Achievement motivation was higher in the first grade than in 4th grade and when the degree of major satisfaction was better. Self-efficacy was higher in order of higher grades. Professor trust, achievement motivation, and self-efficacy were correlated with each other, and achievement motivation and self-efficacy influenced the professor trust. The result of this study suggests that the achievement motivation and self-efficacy of college students will be improved based on the mutual trust among the members of the university.

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.1 s.149
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• pp.38-47
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• 2006

As apparel manufacturers and fabric suppliers are positioned in the middle of the apparel supply chain, these supply chain members build up a partnership to establish a win-win mutual relationship and to gam global competition. This study aimed to provide useful suggestions in setting up operational strategies by investigating the current state of a partnership between apparel manufactures and fabric suppliers. Partnership variables were included as: cooperative attitude, information sharing, interdependency, communications, strategic fit trust and commitment. Manufacturers' performance included productive/economic/emotional performance. A questionnaire was distributed to apparel manufactures who are doing business with fabric suppliers. A total of 101 complete questionnaires were used for further analysis. The results were as follows; First, apparel manufacturers do business with $10\~20$ fabric suppliers mainly, duration of business relation with main partners ranged from 1 year to 30 years, with 7 years on average. Among criteria with which apparel manufactures select fabric suppliers, quality and delivery-time were the most important. Second, cooperative attributes, communications, and strategic fit were positively related with trust. The higher commitment led to the high level of interdependency and strategic fit and tend to more trustworthy. Trust and commitment were significantly re lated with manufacturers' performance(i.e., productive/economic/emotional performance). This study is expected to contribute to increase the better performance for domestic apparel manufacturers.

• Journal of The Korean Digital Architecture Interior Association
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• v.12 no.4
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• pp.49-57
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• 2012

With regard to the culture in cities this study aims to essential understanding and systematic approach to the culture. The "2011 Seoul Survey"report has been used to find out causality among the related variables. In the first place 'satisfaction of cultural condition' was operationally selected as a dependent variable for regression. For the purpose of controlling confounding factors for ceteris paribus effect correlation analysis was done between the dependent variable and all other variables respectively, which resulted in two groups of variables: group (1) - 6 variables of very significant correlations(p-value<0.01) and (2) - the other 6 variables of significant correlations(p-value<0.05). Then hierarchical regression was adopted to these 2 groups to analyse $R^2$ increment, statistical significance of independent variables, and multicollinearity(VIF; variance inflation factor). At last a regression model specified by group (1) as independent variables(they are 'social trust', 'satisfaction of walking condition', 'happiness index', 'preparation against old age', 'satisfaction of traffic condition' and 'hours for internet') shows that only 'social trust' variable has statistically significant and substantially strong effect on 'satisfaction of cultural condition.' This finding should be accepted on the following understanding; (1) urban culture has a collective attribute formed between people and society, (2) culture is somewhat telling and hearing stories and the confidence between tellers and hearers is essential in the mutual response and (3) stimulus is received by relationship in company with sense, emotion, thinking and action. In spite of restrictive external validity this finding can be used as a direction for promoting culture and a basis for related policy choice in cities.

• KIPS Transactions on Software and Data Engineering
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• v.6 no.5
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• pp.257-266
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• 2017

Two remarkable problems of recent online social network are information overflow and information overload. Since the mid-1990s, many researches to overcome these issues have been conducted with information recommender systems and context awareness based personalization techniques, the importance of trust or relationship between users to discover influential information has been increasing as recent online social networks become huge. But almost researches have not regarded trust or relationship in real world while reflecting them in online world. In this paper, we present a novel method how to discover influential and spreadable information that is highly personalized to a user. This valuable information is extracted from an information set that consists of lots of information user missed in the past, and we assumes important information is likely to exist in this set.

• International Area Studies Review
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• v.13 no.2
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• pp.687-711
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• 2009

This research was conducted to explore the factors that cause medical tourists' dissatisfaction, and find ways to solve the tourists' problems by researching on the relationship between the service recovery and the failure of medical services. Also, the research has put more emphasis on establishing marketing strategies that enable Japanese medical tourists to actively visit Korea, and finding out the effects that the medical tourists satisfaction and trust have on their behavioral intentions, recommendations, and positive feedbacks. The summary of the research analysis results as follows. First, the service recovery after the service failure has positive influences on the medical tourist's satisfaction. Second, the service recovery has proven its positive influences on the tourists' trusts and behavioral intentions. Third, the satisfaction of the service recovery has built the mutual trust between the tourists' and the medical center, and this has positive influences on the customer's behavioral intentions. Finally, the research was conducted to analyze the moderating effects on the relationship between the service recovery and the recovery satisfaction. It was found that the medical service failure recognition type has proven no moderating effects.

• The Journal of Fisheries Business Administration
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• v.45 no.3
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• pp.19-37
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• 2014

This study is to focus on the status of implementation of bilateral-fishery order based on the Korea-China fisheries agreement and aims to improve fisheries relationship between two countries. Korea-China Fisheries Agreement entered into force in 2001, and serves as a basic framework of the bilateral fisheries order. However, the fishing order between Korea and China has the following limitations. First, it is standstill of joint response for a practical resource management. Second, there are still gaps between the quotas of mutual accord fishing and fishing operation work performance. Third, China's illegal fishing is taking place consistently. Fourth, the effective cooperation between two countries in fisheries is not carried out. Finally, the Korea has faced difficult situations to adhere to a balanced position in the fishery negotiations due to conflicting positions on China and Japan. In order to solve these problems, the fishing order between Korea and China will be able to maintain the competitiveness of Korean fishery sector by reinforcing Korea's fishing sovereignty, Korea and China, based on trust and cooperation, will make efforts to improve bilateral fisheries relations to maximize mutual benefit in fishery sector. Specifically, first, the two countries should strengthen the resources management based on the scientific research and the improvement of imbalance of the mutual agreed fishing in EEZ. Second, Korea has to achieve our targeted performance of fishing operation and establish a joint resources management system between two countries in the provisional measure zone. Third, Korea should implement to collect fisheries information about China fishing vessels which are operating in the EEZ of Korea. Finally, Korea and China should be building up effective governance framework for the establishment of fishing order.