• The KIPS Transactions:PartC
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• v.19C no.2
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• pp.153-166
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• 2012

Multicast service will be required to be an important form of communication without interruption to the delivery of multicast service in mobile networks increasing MNs. In this paper, we review current status of PMIPv6(Proxy Mobile IPv6) multicast listener support being standardized in the IETF and point out limitations of the current approach and we proposed a fast multicast handover procedure in inter domain PMIPv6 network of network-based mobility management. The proposed Fast multicast handover procedure in inter domain optimizes multicast management by using the context of the MNs. We evaluate the proposed fast multicast handover procedure compared to the based one through the developed analytical models and confirm that introduced fast multicast handover procedure provides the reduced service interruption time and total network overhead compared to the based one during handovers.

• Korean Journal of Agricultural Science
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• v.43 no.3
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• pp.299-319
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• 2016

The National Forest Inventory (NFI) is important for providing fundamental data for basic forest planning and the establishment of forest policies for the purpose of implementing sustainable forest management. The purpose of this study is to present the development of Korea's NFI including legal basis, sampling design, and measured variables and to review the usage of NFI data. The survey methods and forestry statistics among the Unites States, Canada, Japan, China, and European countries were briefly compared. Total 140 publications utilizing NFI data between 2008 and 2015 were categorized with 15 subjects. Korea has conducted the NFI 6 times since 1971, but only the $6^{th}$ NFI is comparable with the fifth, the previous NFI, because the permanent sampling plots have been shared between the periods. The Korean Forestry Statistics contains only half as many variables as that of advanced countries in Forestry. More researches were needed to improve consistent measurement of diverse variables through implementation of advanced technologies. Additional data for Forest Health Monitoring since the NFI $6^{th}$ must be under quality control which will be an essential part of the inventories for providing the chronological change of forest health.

• Management & Information Systems Review
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• v.31 no.3
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• pp.1-19
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• 2012

This study is the research about the internet marketing strategy and the impact factors of psychological well-being of customers of restaurants. For the purpose of study, firstly, the paper was carried out in order to verify the cause and effect relationships of life satisfaction and psychological well-being of the customers in the food service industry. The customers of restaurants in Busan are the objectives for which the survey for empirical analysis was conducted. The result of the testing of hypothesis showed that life satisfaction will have positive influences on psychological well-being, it reveals that life satisfaction has positive influences on three factors of psychological well-being such as personal growth, self acceptance, independence. However, factor of autonomy is rejected. Secondly, the results of the study suggest the importance of introducing variegated internet marketing programs and deciding the appropriate information contents for the customer to activate the use of hands on restaurants. Internet information contents on customer satisfaction and customer loyalty to have a good understanding of the attitude will improve of life satisfaction and psychological well-being of the customers. Strategic information contents of internet marketing for customers of the restaurants must be consider "CRM(customer relationship management)".

• Management & Information Systems Review
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• v.36 no.2
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• pp.223-237
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• 2017

This study focus on the effect of switching barrier on negative performance. To suggest the negative effect of switching barrier, we reviewed the researches on service-failure and attribution theory. The model which we present in the research study includes the antecedents and consequences of negative emotions(regret, resentment) that caused by switching barriers. The former factors consist of internal attribution and external attribution. The latter factors consist of acceptance, complain, negative word-of-mouth. Survey research is employed to test these hypotheses. Previous researches, such as service marketing, psychology, have been referenced to measure constructs. We collected data involving various service area, and used 189 respondents to analyze these data with LISREL structural modeling. The hypothesized relationships were statistically significant. Internal attribution had positive effect on regret and external attribution had positive effects on resentment. And then regret had significant effects on acceptance and complain behaviour. Also resentment strongly effects on complain behaviour and negative word-of-mouth. We concluded with managerial implications, including the potential to deeper understanding switching barrier.

• Management & Information Systems Review
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• v.30 no.4
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• pp.1-22
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• 2011

The role of call center as public organizations introduce call center in has become very important in public services. Especially the leadership of the middle management at the call center in public organizations has become very essential in accordance with the increase of role of teamleader or managers. For this reason, in this research we want to know not only the impact relation teamleader's leadership have on the quality of services and job satisfaction as call center counsellors feel but also the impact relation the quality of callcenter counsellor's services at callcenter have on job satisfaction, and the mediating effect of services quality is examined in the relationship between leadership and job satisfaction Analyses showed that teamleader's leadership have influence on callcenter counsellors' job satisfaction and the quality of services and the quality of employees' services have a positive influence on job satisfaction, the mediating effect of services quality is certified in the relationship between leadership and job satisfaction. Therefore, to encourage the teamleaders' leadership at callcenter, the empowerment and an appropriate compensation need to be provided. Also to improve the quality of employee's services teamleaders ought to run the reinforcing cooperation program or various incentive program and job education need to be encourage and aligned.

• Management & Information Systems Review
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• v.31 no.4
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• pp.139-165
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• 2012

This paper examine the roles of social rapport and friendship which are the representative variables of strong emotional bonds between customers and firms in service relationship marketing. As results, social rapport and friendship were confirmed as positive moderators between a relational antecedent variable and a relational mediator variable. In other words, emotional bonds, such as social rapport and friendship, stimulated relationship development in service relationship marketing. Meanwhile, customer-firm emotional bonds seemed to be a negative effect on the stage of a relational mediator variable and a relational outcome variable. This meant that relational mediator variable and emotional bond variables(social rapport and friendship) individually had an positive effect on a relational outcome variable. If emotional bonds between customers and firms had already built, they could have positive influence on the relational outcome, regardless of relational mediator variables. Conclusively, firms' relational efforts focus on the building the emotional bonds with customers, not on the process of relational antecedents, mediators, and consequences.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.9
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• pp.2205-2212
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• 2015

The aim of this study was to explore the acceptance factors of IPTV healthcare users as convergence service through experts's opinion. First, this study extracted expected indicators for the acceptance factors from brainstorming and literature review. Based on the expected indicators, the Delphi method was performed in order to explore the suitable acceptance factors. The reliability of collected data was evaluated through the criteria of CV(Coefficient of Variation) and CVR(Contents Validity Ratio) on the selected indicators. The results showed a significant acceptance factors timeliness, the following appeared as entertainment, fun and self-efficacy and more. In the future, such additional step as factor analysis targeting the user to verify the validity of the selected factors is required.

• Hwankyungkyoyuk
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• v.21 no.2
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• pp.25-39
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• 2008

The purpose of the study was to develop cyber in-service training contents regarding environmental literacy for entry-level environmental public servants. The blended type of contents were developed, through literature review, contents analysis of other programs, and expert conferences. The validity of the contents developed was ensured experts in environment. Major research findings were as followings: First, there is a lack of time for entry-level environmental public servants to participate in the environmental in-service training programs. Therefore, cyber training can be a good solution to the problems with environmental training courses. It improves access to educational opportunities as it overcomes the limitations of time and space and provides hands-on experiences through multimedia materials that reflect the real world. Second, directions for developing cyber environmental education contents were represented in three parts; 1) strategies for developing cyber environmental education contents, 2) Models for developing cyber environmental education contents, 3) Contents selection for developing cyber environmental education contents Third, the developed contents for entry-level environmental officers consist of 4 domains: (1) the introduction to environment; (2) the natural scientific understanding of environment; (3) the humanistic understanding of environment; and (4) the social scientific understanding of environment. Fourth, the program developed was evaluated by 7 environmental education experts according to 10 evaluation items of total contents and contents development structure. In result, the validity of the program was ensured. Based on the results, some recommendations were suggested.

• Health Policy and Management
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• v.22 no.4
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• pp.703-710
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• 2012

Purpose : The aim of this study is to review the current status of healthcare provision and its human resources administrative management and propose a coordinated human resource management plan for the more efficient operations of healthcare organizations. Methods : We reviewed the literature and held discussions with officials from the United States Department of Health and Human Services to survey United States Public Health Service Commissioned Corps operations. In addition, we surveyed the literature to analyze the current structure and responsibilities of governing bodies involved in public healthcare in Korea. Results : In Korea, there are several administrative offices involved in public health: the Ministry of Health and Welfare, the Ministry of Defense, the Environment Ministry and others. Since these diverse agencies don't integrate their operations, it is difficult to grasp their management of both public healthcare services and their personnel. A potential model is the United States Public Health Service Commissioned Corps, a sub-group of the Department of Health and Human Services and an elite team of highly qualified, public health professionals, which coordinates and manages the overall work and personnel of diverse healthcare organizations. Conclusion : We suggest the establishment of a federal level, public health administrative department of human resource management to centralize and coordinate the existing, disparate healthcare administrative agencies.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.38 no.4
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• pp.98-108
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• 2015

This paper introduces the existence of purchase dependence that was identified during the analysis of inventory operations practice at a sales agency of dealing with spare parts for ship engines and generators. Purchase dependence is an important factor in designing an inventory replenishment policy. However, it has remained mostly unaddressed. Purchase dependence is different from demand dependence. Purchase dependence deals with the purchase behavior of customers, whereas demand dependence deals with the relationship between item-demands. In order to deal with purchase dependence in inventory operations practice, this paper proposes (Q, r) models with the consideration of purchase dependence. Through a computer simulation experiment, this paper compares performance of the proposed (Q, r) models to that of a (Q, r) model ignoring purchase dependence. The simulation experiment is conducted for two cases : a case of using a lost sale cost and a case of using a service level. For a case of using a lost sale cost, this paper calculates an order quantity, Q and a reorder point, r using the iterative procedure. However, for a case of using a service level, it is not an easy task to find Q and r. The complexity stems from the interactions among inventory replenishment policies for items. Thus, this paper considers the genetic algorithm (GA) as an optimization method. The simulation results demonstrates that the proposed (Q, r) models incur less inventory operations cost (satisfies better service levels) than a (Q, r) model ignoring purchase dependence. As a result, the simulation results supports that it is important to consider purchase dependence in the inventory operations practice.