• Journal of the Korea Institute of Information Security & Cryptology
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• v.13 no.2
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• pp.107-114
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• 2003

In this paper, we propose an efficient mutual authentication and key distribution protocol for cdma2000 packet data service which uses Mobile U access method with DIAMETER AAA(Authentication, Authorization and Accounting) infrastructure. The proposed scheme provides an efficient mutual authentication between MN(Mobile Node) and AAAH(home AAA server), and a secure session-key distribution among Mobile If entities. The proposed protocol improves the efficiency of DIAMETER AAA and satisfies the security requirements for authentication and key distribution protocol. Also, the key distributed by the proposed scheme can be used to generate keys for packet data security over 1xEV-DO wireless interface, in order to avoid a session hijacking attack for 1xEV-DO packet data service.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.13 no.4
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• pp.47-62
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• 2003

Patch distribution is one of important processes to fix vulnerabilities of software and to ensure security of systems. Since an institute or a company has various operating systems or applications, it is not easy to update patches promptly. In this paper, we propose a secure patch distribution architecture with an authentication mechanism, a security assurance mechanism, a patch integrity assurance mechanism, and an automatic patch installation mechanism. We argue that the proposed architecture improve security of patch distribution processes within a domain.

• Journal of Distribution Science
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• v.19 no.3
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• pp.35-47
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• 2021

Purpose: Retailing is a very special sector because it demonstrates the effectiveness of combined products and services to create business values. In this study, the author wants to investigate particular areas in the distribution sciences of the purchasing process in Coopmart (Saigon Coop-Vietnam), which is about sauces and seasoning. Research design, data and methodology: The data were collected by experts of Saigon coop, which first went through the Delphi method to choose criteria and sub-criteria for the Analytic Hierarchical Process (AHP). Results: After a long process of calculation based on AHP, the final supplier is chosen according to experts' interview; Masan is the most potential candidate to be the main supplier of sauces and seasoning to Coop mart. Therefore, it is necessary to apply the typical methods such as quantitative analysis of this process - AHP. With the aim of increasing the computational content of the evaluation process suppliers, especially the comparison of suppliers in the same industry as AHP has shown. This enables analyses of all the providers to be more scientific. Conclusions: Thus, this paper would help the facility managers ensure objectives to the reasonable decision, which can be based on AHP to get more information, implement plans and get strategic collaboration with suppliers.

• Journal of Distribution Science
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• v.19 no.7
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• pp.51-59
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• 2021

Purpose: Anger has become one of the dominantly experienced emotions in recent years, particularly under the COVID-19 pandemic. Considering the critical role that anger plays in consumers' lives, the present research examines how feeling angry about money influences consumers' spending and money distribution decisions. Research design and methodology. Three experiments were conducted using different emotion induction methods (i.e., dictator game, autobiographical recall, and scenario). Results. Feeling angry about money decreased pro-social spending (i.e., less money distribution to the others), but it did not affect virtuous or utilitarian spending for the self-unlike past finding on negative feelings that increased utilitarian spending. Furthermore, whereas anger-tainted money decreased pro-social spending of that money, guilt-tainted money increased pro-social spending. However, the effects of guilt versus anger were not completely symmetrical. The antagonistic effect of anger was diffusive across spending on distant and close others, whereas the pro-social effect of guilt was limited to distant others. Conclusions: These findings help policy makers and financial institutions forecast how money will be distributed or circulated when it is likely to be dampened by anger under the pandemic. They also highlight the importance of examining the effects of discrete emotions (e.g., anger vs. guilt) beyond valence.

• Journal of Distribution Science
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• v.19 no.7
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• pp.113-121
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• 2021

Purpose: Technology induces the virtual distribution channel to exist, especially for booking a room online. This situation, indeed, provides an alternative for the customers to book based on their budget through digital platforms. One platform offering competitive prices is virtual hotel operators, such as Airbnb, OYO, RedDoorz, and Airy Rooms. Preferably, after using their platform, the user should be satisfied and loyal. Hence, this investigation aims to prove some associations. The first is between e-satisfaction and e-loyalty. The second is between website quality and e-satisfaction. The final is between website quality and e-loyalty. Research design, data, and methodology: This study is quantitatively designed with the sample of 350 users of the virtual hotel operator applications in Bandar Lampung: Airbnb, OYO, RedDoorz, and Airy, as the samples. Therefore, by denoting this sample size, the structural equation model based on covariance is utilized to examine the three hypotheses proposed. Also, to get the responses, this study uses a survey through a questionnaire. Result: This investigation demonstrates the positive relationship between e-satisfaction and e-loyalty. Additionally, website quality positively associates with e-satisfaction and e-loyalty. Conclusion: The virtual hotel operators must have the superiority on their website-based application to update the information based on the room availability and price, ensure online transaction safety, and facilitate its utilization to maintain long-term satisfaction and loyalty virtually.

• Journal of Distribution Science
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• v.19 no.7
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• pp.41-50
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• 2021

Purpose: This study aims to analyze the effect of nepotism on work engagement. In addition, this study aims to analyze the mediating effect of leader legitimacy in the relationship between nepotism and work engagement in the distribution industry. Research design, data and methodology: 236 survey data were collected and analyzed using SPSS 22 and AMOS 22. For the assessment of the goodness of fit of the models, indexes such as TLI, CFI, RMSEA were used. For hypotheses testing, we used SEM method and bootstrapping. Results: The results of this study are as follows. First, the relationship between nepotism and the employee's work engagement was not significant. Second, it was revealed that nepotism negatively affects the leader's legitimacy. Third, it was found that a leader's legitimacy had a positive effect on the employees' work engagement. Fourth, leader legitimacy was found to mediate the relationship between nepotism and employees' work engagement. Conclusion: We found that the effect of nepotism can be changed depending on contingent factors. This study contributed to the accumulation of nepotism theory by demonstrating the process in which nepotism, which has been insufficient so far, affects outcome variables. Based on the empirical results of this study, theoretical and practical implications, limitations, and future research directions were discussed.

• Journal of Information Technology Applications and Management
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• v.28 no.1
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• pp.33-41
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• 2021

In this study, we estimated the number of secondary COVID-19 infections caused by students with potential transmission potential home. When the existing Monte Carlo method was applied to Korean data, the average number of household members of the second COVID-19 infected was predicted. The summary of this study is as follows. First, in general, the number of secondary infections by students returning home from school is greatly influenced by the virus infection rate of each student group they contact while returning home from school. Korea-based empirical research on this is needed. Second, the number of secondary infections by Korean students was relatively lower than that of previous studies. This can be interpreted as being due to the domestic furniture structure. Third, unlike previous studies that assumed the distribution of secondary infected individuals as normal distribution, assuming a negative binomial distribution, the number of secondary infected individuals was sensitively changed according to the estimated parameters. Interpretation of this result shows that the number of secondary infections may vary depending on the time of decision making, the target region, and the target student group. Finally, according to the results of this analysis, a proposal was made to support education policy decisions.

• Journal of Distribution Science
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• v.20 no.3
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• pp.71-82
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• 2022

Purpose: This study aims to not only measure the elderly welfare supply index but investigate spatial patterns and determinants of local elderly welfare services in South Korea. Research design, data, and methodology: The index for local elderly welfare services is measured by employing standardized scores for critical variables related to elderly welfare. The present study utilized the GIS technique and Moran's I index to examine spatial patterns of elderly welfare services. The determinants of local elderly welfare service are analyzed by a series of regression models using R. Results: Spatial imbalance and asymmetric distribution were serious in the supply of elderly welfare service. It was also confirmed that the factors affecting the level of welfare services for the elderly vary depending on the type of service. In particular, the higher the proportion of the elderly population and the social welfare budget, the lower the level of welfare services for the elderly. Conclusions: Given the circumstance of spatial mismatch between supply and demand for elderly welfare services, it is necessary to consider and provide policy tactics about how the economic benefits and welfare budgets generated in the region can contribute to strengthening the welfare service system for the elderly.

• The Plant Pathology Journal
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• v.38 no.2
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• pp.78-89
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• 2022

Phaeosphaeria species are pathogenic on wheat, barley and a wide range of wild grasses. To analyze mating type loci of the Phaeosphaeria species and investigate mating type distribution in Iran, we sequenced mating type loci of 273 Phaeosphaeria isolates including 67 isolates obtained from symptomatic leaves and ears of wheat, barley, and wild grasses from two wheat growing region in Iran as well as 206 isolates from our collection from other regions in Iran which were isolated in our previous studies. Mating type genes phylogeny was successfully used to determine the species identity and relationships among isolates within the Phaeosphaeria spp. complex. In this study, we reported seven new host records for Phaeosphaeria species and the Phaeosphaeria avenaria f. sp. tritici 3 group was first reported from Iran in this study. Mating type distribution among Phaeosphaeria species was determined. Both mating types were present in all sampling regions from Iran. We observed skewed distribution of mating types in one region (Kohgiluyeh va Boyer-Ahmad) and equal distribution in the other region (Bushehr). However, when considering our entire dataset of 273 Iranian Phaeosphaeria isolates, the ratio of mating types was not deviated significantly from 1:1 suggesting possibilities for isolates of opposite mating type to interact and reproduce sexually, although the sexual cycle may infrequently occur in some regions especially when the climatic conditions are unfavorable for teleomorph development.

• Journal of Distribution Science
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• v.20 no.2
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• pp.79-89
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• 2022

Purpose: This study aims to scrutinize the effect of knowledge sharing on entrepreneurial passion and innovative work behavior. This study also tests the mediating role of entrepreneurial passion on the association between knowledge sharing and innovative work behavior in distribution channel. Research design, data and methodology: A quantitative methodology is adopted to inspect the association between knowledge sharing, entrepreneurial passion, and innovative work behavior. Data are obtained from 193 employees from four stone milling companies in Central Java - Indonesia. The Smart PLS 3.0 software is used to verify and test the offered hypotheses. Results: The significant empirical findings reveal that knowledge sharing positively affects entrepreneurial passion and innovative work behavior. Also, entrepreneurial passion positively affects innovative work behavior. In addition, this study brings to the light that entrepreneurial passion mediates the association between knowledge sharing and innovative work behavior. These results suggest that organizations should freely facilitate knowledge-sharing behavior to increase entrepreneurial passion within the organization, thereby promoting innovative work behavior. Conclusions: This study presents a significant contribution to the development of knowledge in business because the studies on the association between knowledge sharing and innovative work behavior have not taken into account the mediating role of entrepreneurial passion.