• Journal of Korea Society of Digital Industry and Information Management
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• v.12 no.2
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• pp.15-24
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• 2016

GPS(Global Positioning System) location tracking is a method for taking the precise coordinates after the coordinates are obtained by a GPS receiver, and displaying them on the map. In this paper with WAVE(Wireless Access for Vehicular Environment) simulation, we show that various services such as vehicle tracking service, real-time road conditions service and logistics can go tracking service, control and operation services according to the vehicle position and the traveling direction by using the GPS position data. A vehicle tracking system using GPS is automatically able to manage multiple RCP when exchanging data between RMA and the RCP, and it provides rapid requests and responses. To verify that multiple sessions between RMA and RM, as well as multiple sessions between RMA and RCP are able to be implemented, we take RMA as a RCP application on an OBU, until the RMA is receiving data response from corresponding RM. As a result of this experiment, we show that the response speeds of single session between RMA and RM using 1, 2, 3, and 4 kbyte unit data are similar, 62.32ms, 62.65ms, 63.02ms, and 63.48ms, respectively. Likewise, those of 128 muliple sessions using 1, 2, 3, and 4 kbyte unit data are not much more time difference, 298.08ms, 302.21ms, 322.85ms, and 329.62ms, respectively.

• Journal of Korea Spatial Information System Society
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• v.3 no.1 s.5
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• pp.75-87
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• 2001

The advantages of using components result from their reusability between applications. Applications can be easily implemented by adding components. In this paper, we described the design and implementation process of ASC(Application Service Component) for component-based GIS applications. In our project, there are 5 applications : Road Facility Management, Urban Planning, Cadastral Map Management, Water Supply Management, and Sewerage Management. All of them use MapBase component which supports common GIS functionality. Although they are different applications, some parts of them are same. We analyzed the developed results in 1st and 2nd year, and the achievement of UIS(Urban Information System) project in Busan Metro City in Korea. The UIS of Busan was consisted of 5 applications to equal with our project. Then, we extracted 11 common used components between 5 applications, and implemented 5 common components of them and 2 additional components. They were Authority, GISReport, IndexMap, Measurement, Search, Symbol Manager, and Attribute Display. As we offered them to companies developing application components, they were able to reduce the development time.

• The KIPS Transactions:PartA
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• v.19A no.3
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• pp.161-168
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• 2012

The study of Cloud based system is emerging to become the core technology in IT field due to the tremendous growth of Cloud Computing. Researches to deliver applications to Thin-Client based mobile virtual machine and Desktop as a Service(DaaS) using Cloud Computing are conducted actively. In this paper, we propose a Cloud system to run the mobile application in the mobile Thin-Client device and resource allocation mechanism Dynamic Resource Allocation Manager for Mobile Application(DRAMMA). Thus, through performance check, we show DRAMMA has improved the utilization of Cloud system, less migration of virtual machines and decreased the error rate of resource allocation. Also our proposed system delivers service more efficiently than the previous resource allocation algorithm.

• Journal of KIISE:Computing Practices and Letters
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• v.7 no.1
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• pp.24-37
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• 2001

This paper deals with our experience for the design and implementation of Transport and Session managers in the Integrated Streaming Service Architecture (IS SA) that was developed by the authors. The ISSA is a streaming framework that allows to develop integrated multimedia streaming applications such as VOD system in unicast/multicast and real-time broadcastOive-cast). It also facilities standard real-time transport protocols such as RTp(Real-Time Transport Protocol)/RTCP(Real-time Control Protocol) and RTSP(Real-Time Streaming ProtocoD that allows to user openness. The ISSA supports diverse media fonnats and is independent from underlying networks and operating systems, and compatible with the global real-time multimedia database system (BeeHive) so that streaming media are efficiently retrieved, stored, and serviced. The role of the Transport Manager is to do packetization and depacketization for the different types of multimedia data and delivers the packetized media data in real-time. The Transport Manager uses RTP protocol. The role of the Session Manager is to establish and control the media channel by using RTSP protocol and to deliver the database transactions for the multimedia database by using RTTP(Real-Time Transaction Protocol) protocol. Both the Transport and Session Manager are doing their functions through the network interface in the ISSA that allows developers to various network programming interfaces and provides flexibility to the system.

• Journal of the East Asian Society of Dietary Life
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• v.20 no.3
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• pp.458-472
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• 2010

In the service industry brand was getting more importance in marketing and brand should be researched more. So the purpose of this study was to identify the causal relationships of 'constructs of brand evidence-brand satisfaction-feelings-brand satisfaction-customer loyalty'. In this research constructs of brand evidence were brand image, price (value for money), servicescapes, core service, employee service, and self-image congruence. This research used family restaurants settings using a sample of customers visiting and enjoying menus at family restaurant stores of Youngnam province. A total of 222 questionnaires were analyzed with SPSS/PC+12.0 and LISREL8.30. Empirical results were that firstly, price, core service and employee service affected brand satisfaction and secondly, employee service, core service, servicescape affected postive feelings and thirdly, brand evidence constructs except self-image congruence influenced negative feelings and lastly, brand satisfaction influenced customer loyalty. On the basis of these findings, family restaurant manager should pay much attention to constructs of brand evidence and use these variables to appeal to and understand target market.

• Journal of the Korea Society for Simulation
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• v.13 no.1
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• pp.41-50
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• 2004

The purpose of this paper is to analyse the manager's policy to maximize the profit in a multiple-server queueing facility with a limited queue capacity. We assume that the level of advertizing effects on the arrival rate of customers to the facility. The model without ‘word of mouth effect’ is assumed that the arrival rate is independent on the qualify of service level. We estimate the service quality by the balking rate of customers from system. We extend this to the model with ‘word of mouth effect’. To achieve the maximum profit, the most important factor is the considerably high utilization of facility for both models. Given service rate, we should maintain an effective arrival rate to some extent. To this end, among the available options, an increase of advertizing effort is more desirable than reducing the fee if the service value of customers remains unchanged. We also investigate whether the variability of service time has a significant impact on determining the optimal policy. The cost of service variability is not so expensive as that in a single server model due to the reduced variability of service times in a multiple-server model.

• Journal of the Korean housing association
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• v.17 no.4
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• pp.155-163
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• 2006

To investigate the actual management condition of group homes for the elderly and their living environment, four group homes and 26 elderly people living in the group home were surveyed. As the results, the relationships between the administrator and the elderly were acceptable, but the group homes seem suffer from insufficient administrative supports. The most required service in the group homes was a conversational partner service. Moreover, the most satisfactory point for the elderly living in group homes was the settlement of food, clothing, and housing. The unsatisfactory things were the service related to medical, leisure, and house work and an invasion of their private life. The resident elderly in group homes were fully satisfied with their living environment including the relationship with the manager and the people in the facility. They, however, do not have much chance to make an exchange with their neighbor. Overall, the elderly want to stay continuously in the group homes where they are living current.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.26 no.2
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• pp.98-107
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• 2018

Recently, the airline industry has grown tremendously, and competition among airlines has intensified. Therefore, the importance of airline's service quality has been greatly emphasized. The human service provided by the airline is the biggest service the customer feels, so the customer orientation of the flight attendant is very important. The aim of this study was to identify the mediating effects of organizational commitment on the relationship among transformational leadership and customer orientation. As a results of the study, transformational leadership had positive significant effects on organizational commitment and job customer orientation. The results of this study imply that the organizational commitment play significant mediating role between transformational leadership and customer orientation.

• Proceedings of the Korea Technology Innovation Society Conference
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• 1998.05a
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• pp.22-22
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• 1998

This paper reviews the benefits of users participation in IMT-2000 standardization by the creation of users coalitions, focusing in particular on phased standards strategy necessary for the evolutionary approach from second generation to third generation systems. It first presents in detail the current status of IMT-2000 standardization progress occurring at each regional standard body including TIA of US, ETSI of Europe, TTA of Korea and ARIB of Japan. With this clear understanding of standardization situations worldwide, we may be able to come up with our standards strategies related to IPR issues and efficient standard-setting mechanism between manufacturers and service providers. In addition, this paper addresses the necessity for phased licensing of IMT-2000 service in order to avoid the high cost of new infrastructures and ensure an acceptable financial investment returns for existing cellular and PCS service providers. An author hopes that this paper can provide the adequate standardization directions of IMT-2000 to satisfy the varying regional and global market requirements.

• Journal of Korea Multimedia Society
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• v.3 no.6
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• pp.557-565
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• 2000

According to CORBA specification, there are some mechanisms for object reference management such as Naming Service and Trading service, but these mechanism cant's supply all functionalities needed fomanagement in MICS. So, We have designed and implemented additional special-purpose IPO manager. It provides load balancing service based on real-time information for IPO and fault-tolerable services with the management of redundant IPOs and also provides transparent configuration of client environment with the lists of registered IPOs.