• Journal of Information Processing Systems
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• v.3 no.1
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• pp.8-15
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• 2007

Grid environments provide the mechanism to share heterogeneous resources among nodes. Because of the similarity between grid environments and P2P networks, the structures of P2P networks can be adapted to enhance scalability and efficiency in deployment and to search for services. In this paper, we present a membership management based on a hierarchical ring which constructs P2P-like Grid environments. The proposed approach uses only a limited number of connections, reducing communication cost. Also, it only keeps local information for membership, which leads to a further reduction in management cost. This paper analyzes the performance of the approach by simulation and compares it with other approaches.

• Korean Management Science Review
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• v.23 no.1
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• pp.115-133
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• 2006

From early 1999 years, the mobile telecommunication companies have introduced the mobile telecommunication membership program to attract more customers. However, the severe competition in the mobile telecommunication market has made the mobile telecommunication membership program to be faced with the matured mobile telecommunication market and the mobile number portability. Wain focus of this study is to find what are the core elements of service qualify of the mobile telecommunication membership program. To achieve research objective, we conceptualized the service quality of mobile telecommunication membership program. We also derived hypotheses regarding the relationships between service quality of the program, customer satisfaction, and customer loyalty and examined it by using the empirical research methodology. We suggest new marketing strategies of the mobile telecommunication membership program which can be applied to improve the corporate competitiveness.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2005.10a
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• pp.371-387
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• 2005

From early 1999 years, the Mobile Telecommunication Companies have introduced the Mobile Telecommunication Membership Program to attract more customers. However, the severe competition in the Mobile Telecommunication market has made the Mobile Telecommunication Membership Program to be faced with the matured Mobile Telecommunication market and the Mobile Number portability. Main focus of this study is to find what are the core elements of service quality of the Mobile Telecommunication Membership Program. To achieve research objective, we conceptualized the service quality of Mobile Telecommunication Membership Program. We also derived hypotheses regarding the relationships between service quality of the program, customer satisfaction, and customer loyalty and examined it by using the empirical research methodology. We suggest new marketing strategies of the Mobile Telecommunication Membership Program which can be applied to improve the corporate competitiveness.

• Journal of the Korean Operations Research and Management Science Society
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• v.11 no.1
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• pp.36-43
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• 1986

In this study, the fuzzy programming is extended to handle various types of membership functions by transformation of the complicated fuzzy programming problems into the equivalent crisp linear programming problems with single objective. It is well-known that the fuzzy programming problem with linear membership functions (i.e., ramp type) can be easily transformed into a linear programming problem by introducing one dummy variable to minimize the worst unwanted deviation. However, until recently not many researches have been done to handle various general types of complicated linear membership functions which might be more realistic than ramp-or triangular-type functions. In order to handle these complicated membership functions, the goal dividing concept, which is based on the fuzzy set operation (i. e., intersection and union operations), has been prepared. The linear model obtained using the goal dividing concept is more efficient and single than the previous models [4, 8]. In addition, this result can be easily applied to any nonlinear membership functions by piecewise approximation since the membership function is continuous and monotone increasing or decreasing.

• Journal of Industrial Convergence
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• v.13 no.1
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• pp.11-23
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• 2015

Organizations use multiple team membership to enhance individual and team productivity and learning, but this structure creates competing pressures on attention and information, which make in difficult to increase both productivity and learning. My model describes how the number and variety of multiple team memberships drive different mechanisms, yielding distinct effects.

• Proceedings of the Safety Management and Science Conference
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• 2001.05a
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• pp.269-273
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• 2001

Nowadays the most important thing is not to gather new membership but to manage existing membership with useful information in electronic commerce system. To satisfy various customers, it is vital to understand and analyze customer's need. This paper presents the modeling method for efficient marketing system in mobile commerce.

• Korean Association of Arts Management
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• no.56
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• pp.89-117
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• 2020

In order to secure sustainable financial resources and to attract more key supporters, today's art museums are trying to further develop individual sponsorship. The purpose of this study is to explore the direction of membership programs by considering membership as the first step for the development of individual supporters for art museums. Although it is not easy to generate substantial profits within a short period through membership, art museums can secure supporters who empathize with and participate in their mission and activities by developing individual supporters through membership. The new trends of support, which has emerged as a stream of "new philanthropy" since the 1990s, indicate that the needs and motivations of individual supporters are changing. This has great implications for the direction of the development and operation of membership programs at art museums. This study investigated the role, method, and direction of the development of individual supporters through membership by conducting a theoretical review and a case study on the membership programs and individual sponsors of art museums. In addition, the study analyzed the cases of the Cleveland Museum of Art, the Art Institute of Chicago, and the Museum of Modern Art in the United States, which have continuously attempted new approaches and improved membership programs based on a long history of membership operation and individual support, by centering on the new attributes of philanthropy, including participation and involvement, accountability, and transparency. Based on the results, implications and suggestions for Korean art museums were derived. Amid the lack of art museums' membership programs and academic research, this study has significance in exploring the direction and prerequisites for membership for the development of individual supporters.

• Journal of the Korean Operations Research and Management Science Society
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• v.17 no.3
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• pp.67-78
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• 1992

MODM (multiobjective decision-making) problem is very complex system for the analyst. The problem is more complex if the goals of each of the objective functions are expressed imprecisely. It requires suitable MODM method to deal with imprecisions. Therefore, we present a new interactive fuzzy decision making method for solving multiobjective nonlinear programming problems by assuming that the decision maker (DM) has imprecise goals that assume fuzzy linguistic variable for each of the objective functions. The imprecise goals of the DM are quantified by eliciting corresponding membership functions through the interactive with the DM out of six membership functions. After determining membership functions, in order to generate the compromise or satisficing solution which is .lambda.-pareto optimal, .lambda.-max problem is solved. The higher degree of membership is chosen to satisfy imprecise goals of all objective functions by combining the membership functions. Then, the values are the compromise or satisficing solution. On the basis of the proposed method, and interactive computer programming is written to implement man-machine interactive procedures. Our programming is a revised version of sequential unconstrained minimization technique. Finally, a numerical example illustrates various aspects of the results developed in this paper.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2017.08a
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• pp.101-122
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• 2017

As business paradigm shifts toward the convergence of technology and industry, so-called the fourth industrial revolution, research and development on enterprises is becoming the core capability of growth momentum for the future. Accordingly, Management of Technology (MOT) is being paid attention to construct systematical planning and operations on technological strategy, thereby increasing the importance of cooperative relationship in MOT-relevant domains. Due to this reason, academia manages the family membership system that enables mutual collaborations between academia and industry to achieve their win-win strategy and makes customized cooperative systems to share their human and property resources systematically. Particularly, it is vital to operate the family membership system effectively and efficiently in the MOT domain because family enterprises need to endeavor the establishment of value-toward technology strategy within the framework of those cooperative systems. For such the purpose, this paper presents the analysis of the state-of-the art of the family membership system managed by Graduate School of Management of Technology at Pukyong National University. This paper also proposes vitalization strategies of this membership system so that famliy enterprises located in the east-southern area in Republic of Korea can gain MOT-oriented innovative capability.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.14 no.3
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• pp.181-187
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• 2014

Dealing with uncertainty is always a challenging problem. Intuitionistic fuzzy sets was presented to manage situations in which experts have some membership and non-membership value to assess an alternative. Hesitant fuzzy sets was used to handle such situations in which experts hesitate between several possible membership values to assess an alternative. In this paper, the concept of intuitionistic hesitant fuzzy set is introduced to provide computational basis to manage the situations in which experts assess an alternative in possible membership values and non-membership values. Distance measure is defined between any two intuitionistic hesitant fuzzy elements. Fuzzy technique for order preference by similarity to ideal solution is developed for intuitionistic hesitant fuzzy set to solve multi-criteria decision making problem in group decision environment. An example is given to illustrate this technique.