• Journal of Industrial Convergence
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• v.20 no.2
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• pp.87-94
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• 2022

The purpose of this study verified the relationship between parents' perception of program value, service quality, and service satisfaction who participate in special sports activities. For this a survey was conducted with parents participating in the program at welfare facilities and private institutions in the metropolitan area. The survey was directly visited by the researcher, and 236 copies of data were collected and used for analysis. For the collected data, the causal relationship was verified through descriptive statistics, factor analysis and reliability analysis, correlation analysis and regression analysis. As a result of the analysis, the following conclusions were obtained. First, it showed a significant influence in tangibility, reliability, empathy, and guarantee in the relationship between program value perception and service quality. Second, in the relationship between program value perception and service satisfaction, significant influence was shown on user satisfaction and performance satisfaction. Third, in the relationship between service quality and service satisfaction, it showed a significant influence on user satisfaction and performance satisfaction.

• Journal of Digital Contents Society
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• v.12 no.1
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• pp.85-94
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• 2011

QoS(Quality of Service) is defined as "The collective effect of service performance which determines the degree of satisfaction of a user of the service" by ITU-T Rec. E.800. While the use of VoIP(Voice Over Internet Protocol) has been widely implemented, persistent problems with QoS are a very important sue which needs to be solved. This research is finding the assignment of VoIP QoS to deduct how to manage the control system and presenting the QoS control process and framework under NGN(Next Generation Network) environment. The trial framework is the modeling of the QoS measurement metrics, instrument, equipment, method of measurement, the series of cycle & the methodology about analysis of the result of measurement. This research underlines that the vulnerability of the VoIP protocol in relation to its QoS can be guaranteed when the product quality and management are controlled and measured systematically. Especially it's very important time to maintain the research about VoIP QoS measurement and control because the big conversion of new network technology paradigm is now spreading. In addition, when the proposed method is applied, it can reduce an overall delay and can contribute to improved service quality, in relation to signal, voice processing, filtering more effectively.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.8A
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• pp.804-813
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• 2006

In wireless Internet environment that demand of wireless Internet service increase steadily, wireless PKI(Public Key Infrastructure) service is appearing on stage as necessary essential base technology for information protection service offer, In this paper, we propose the method for verification to reduce the communication overload using VID to CSMP made with a goal of the performance guarantee for security and use in a real time and examine the existent certificate verification methods. The performance of security and the use in a real time is guaranteed by managing the note of authentification by the person who verifies and reducing the amount of the data transmission using VID.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.2
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• pp.302-308
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• 2013

Internet is becoming more common with increasing cloud services have been spreading rapidly. A SLA is agreements between service providers and customers of service providers is how to ensure quality of service. SLA in cloud computing environments from the perspective of the IT service providers to customer satisfaction increase for service quality, it will need to differentiate between competing carriers QoS guarantees with SLA is a very important factor. However, the study of SLA in the cloud is staying in its infancy. In this paper, SLA indices for cloud services defining and use them SLA Management System for QoS guarantee has been implemented. The proposed system using monitoring-based migration policy an open source-based cloud computing platform which Cluster Nodes load distribution of virtual machines assigned to their availability, response time, throughput analysis of what affects and is compared with existing cloud.

• The Journal of the Korea Contents Association
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• v.15 no.12
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• pp.257-272
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• 2015

The purpose of this study is to investigate practical measures to provide a better welfare services in public sector through analyzing differences according to socio-demographic characteristics about the quality service of public welfare that social welfare officials perceive personally. The questionnaire has been conducted among 401 social welfare officials with 5 factors: tangibles, reliability, responsiveness, empathy and assurances. With the results, the age was the most conspicuous difference in five factors of quality service in general. The quality of welfare service appears lower level as the official works close to community members. Additionally, the analysis shows that social welfare officials have relatively low perception about reliability, responsiveness and empathy. The official in charge of social welfare needs to have a neighborhood-centered value orientation, and be a social worker and official in the field of substantive welfare. Therefore, this study has a meaning to suggest some directions of social welfare transition and basic delivery system by identifying their understanding.

• The Journal of the Korea Contents Association
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• v.19 no.6
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• pp.541-552
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• 2019

Recently, social welfare officers are suffering from a lot of job stress due to increasing work and are carrying out emotional labor. This study assessed the effect of emotional labor on the quality of welfare service through a questionnaire survey on 937 civil servants in Sejong city and Chungcheongnam-do provinces. First, social welfare officers experienced more than average level of emotional labor, and they performed more internal behavior than surface behavior. Second, the services provided by the social welfare officers were higher than usual, followed by tangibility, assurance, reliability, empathy, and responsiveness. Third, deeping acting had a positive (+) influence on service quality among the sub-factors of emotional labor. In other words, the quality of service increases as the emotional state itself changes, On the other hand, deeping acting did not affect service quality. In the future, policy responses to excessive work burden of social welfare officers should be needed and a manual for responding to emotional labor should be provided.

• Journal of Internet Computing and Services
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• v.3 no.3
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• pp.67-74
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• 2002

Asynchronous transfer mode (ATM) can be efficiently used to transport packet data services. The switching system will support voice and packet data services simultaneously from end to end applications. To guarantee quality of service (QoS) of the offered services, source rate to send packet data is needed to control the network overload condition. Most existing control algorithms are shown to provide the threshold-based feedback control technique. However, real-time voice calls can be dynamically connected and released during data services in the network. If the feedback control information delays, quality of the serviced voice can be degraded due to a time delay between source and destination in the high speed link, An adaptive algorithm based on the optimal least mean square error technique is presented for the predictive feedback control technique. The algorithm attempts to predict a future buffer size from weight (slope) adaptation of unknown functions, which are used for feedback control. Simulation results are presented, which show the effectiveness of the algorithm.

• The Journal of Bigdata
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• v.5 no.2
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• pp.29-42
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• 2020

In Korea, micro-enterprises are in charge of an important part of the common people's economy, but face difficulties such as excessive competition, deteriorating profitability, and concentration of life-oriented industries. In order to solve this problem, the government is providing commercial district analysis services for micro-enterprises. However, the data provided by various organizations is not standardized, and there is a limit to the composition of the service with limited data. In this paper, we propose a method of solving the data consistency problem and linking and analyzing between questionnaire information and commercial district information to expand the data analysis service. The proposed linking methods are three methods: linking the commercial area information and questionnaire information in the same area based on the type of business and area, linking the survey information centered on individual micro-enterprise, and linking a small area of questionnaire information with a large area of commercial district information. The linked commercial district information and questionnaire information can be used in various ways or expanded analysis services. This proposed a method to overcome the limitations of existing commercial district analysis services with questionnaire information and lay the foundation for expanding the commercial district analysis services necessary for micro-enterprises.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.15 no.6
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• pp.135-154
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• 2020

This paper analyzes the 5,521 samples of the small and medium-sized businesses(SMBs) obtained from the Korea Credit Guarantee Fund. From January 2014 to September 2019, 85% of the SMBs have 5 or fewer full-time employees. The proportion of SMBs is overwhelmed by the elderly men, and most founders are the CEO. Also, about 87% of the workplace types are rented, while 64% of the CEO's residence types are owner-occupation. 47% of the financial grade score is less than 10 points out of 100 and 80% of SMBs have less than 200 million won of the loan guarantee. In particular, the total guarantee loan amount or the days of net guarantee have significantly positive relations with the working period of the CEO in the same industry, the number of employees, the operation period of SMBs, and the corporate business type. In the case of the financial grading score which has the highest weight in overall credit rating gets higher with the higher number of employees, the longer the operation period, and the corporate business type. However, the quantified non-financial grading score has no significant relationship with other explanatory variables, except for the corporate business type. This implies that a non-financial grade score is measured by other determinants that are not observed by the Korea credit guarantee fund. The pure non-financial grade score has positive relations with the working period of the CEO. Overall, this paper would help Korean SMBs upgrade their credit ratings and expand the money supply when there is no standardized credit rating model or no publicly available evaluation criteria for SMBs. We expect this paper provides important insights for further research and policy-makers for SMBs. In particular, to address the financial needs of thin-filers such as SMBs, technology-based financial services (TechFin) would use alternative data to evaluate the financial capabilities of thin-filers and to develop new financial services.

• Journal of KIISE:Information Networking
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• v.37 no.2
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• pp.122-134
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• 2010

With the rapidly increasing demand of traffic applications, the need to support seamless and robust multimedia services in the Vehicular Ad hoc Network is growing. Fast handover for the MIPv6 (FMIPv6) developed to solve the MIPv6's problem as well as Mobile IPv6 (MIPv6) for basic mobility protocol have been developed to support seamless handover in mobile environment. However, MIPv6 and FMIPv6 are useless for Quality-of-Service (QoS) services such as multimedia applications due to the long handover latency and the packet loss problem. In this paper, we propose a seamless and robust handover scheme that supports multimedia services in Vehicular Ad hoc Network using oCoA and background DAD. Through performance evaluation, we show that the proposed scheme is more proper for Vehicular Ad hoc Network than other schemes.