• Journal of the Korea Society of Computer and Information
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• v.25 no.4
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• pp.105-112
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• 2020

In the fourth industrial revolution represented by hyper-connected and intelligence, cloud computing is drawing attention as a technology to realize big data and artificial intelligence technologies. The proliferation of cloud computing has also increased the number of threats. In this paper, we propose one way to effectively monitor to the resources assigned to clients by the IaaS service provider. The method we propose in this paper is to model the use of resources allocated to cloud systems using ARIMA algorithm, and it identifies abnormal situations through the use and trend analysis. Through experiments, we have verified that the client service provider can effectively monitor using the proposed method within the minimum amount of access to the client systems.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.31 no.5
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• pp.941-950
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• 2021

Single Sign-On (SSO) service manages user's account passwords from multiple websites so that security in a high level is required. Users who use the SSO service are authenticated through the Identity Provider (IdP) when logging into the website. We present the security requirements that IdP can take in order to minimize the user's risk whose IdP account is compromised. We describe the security threats that arise when the security requirements are not satisfied. Through evaluation, we prove that the attacker's session cannot be canceled even if the user recognizes the attack if the IdP does not satisfy the security requirements.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.29 no.1
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• pp.50-56
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• 2019

Objective: The aim of this study is to analyze the reliability assessment of work environment measurement, and to propose ways of improving the system. Methods: We have reviewed reports and articles on the reliability assessment written by KOSHA and academia in order to analyze problems related with the system and propose the alternatives. Results: There are three ways to improve the system of the reliability assessment. First of all, it is necessary to perform the reliability assessment by measuring the work environment when workers raise questions about the results so we can make workers trust these results of the reliability assessment. Secondly, we should inspect the workplace at first, not the work environment service provider, so we can increase the employer's recognition of his duty to practice the work environment measurement. Thirdly, the technical committee is needed for technical issues related with the work environment measurement. Conclusions: Above all, it is crucial to get the workers' interest and trust to improve the work environment measurement. The reliability assessment should support the meaning and value of the work environment measurement by practicing the reliability assessment whenever workers have a demand for this and operating the technical committee.

• Journal of the Ergonomics Society of Korea
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• v.31 no.1
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• pp.7-13
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• 2012

Objective: This paper discussed the characteristics of service design process by comparing with product design process. Background: Service design has different design outcomes, project participants, and design constraints than product design. Method: The comparison took two perspectives: one was shorter-term, design process of a service, and the other was longer-term, process of service development. Results: It was discussed that service design process is similar in overall, but has four differences. First, the role of design is required earlier and longer in the process, which means service designers need to participate from the begging of the project to service operation. Thus service designers are required to have holistic viewpoint of the project. Second, service design requires many design expertise thus collaboration needs to be well defined and managed throughout the process. Third, since service provider has limited resources, regulations, and market competition, some service features cannot be provided. Service designers are required to know both customers' needs and functional constraints. Last, service design is highly coupled with service operation. Designing and providing service happens at the same time and evolves over time. Conclusion: Consequently it was asserted that the role of designers in service design is essential for success. In specific, the role of service design architect, who manages design process and design outcomes, is a new and important role in service design project.

• Journal of Digital Convergence
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• v.15 no.4
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• pp.127-137
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• 2017

The role of smartphones is changing from a communication system for exchanging calls and information into a universal platform for cultural services. Also, satisfaction for mobile application services on smartphones is a very important factor in the smart business. In This paper, we analyze the effects of the outcome, service scape, costs, and especially the impact of whether costumers having to pay or free for the app on customer satisfaction. For this purpose, we analyzed survey data on service quality of mobile app service from Chinese mobile app service users. We also analyzed the moderating effects of paid and free mobile app services. As a result, it was confirmed that the quality, servicescape quality and cost of mobile app service that customers perceive have a positive effect on customer satisfaction. In addition, the effect of the cost of mobile app service perceived by the customer on customer satisfaction showed that free mobile app service was more significant than paid mobile app service. This paper can be used as an alternative to monetization for providing a mobile app service provider or a mobile app service provider who wants to switch mobile app service from free to paid service.

• 한국노년학
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• v.36 no.3
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• pp.649-671
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• 2016

The purpose of this study was to identify the meaning of performance experienced in the process of practicing at the elderly suicide prevention center. Therefore, the actual results perceived from the subjective viewpoints of the chiefs, staff and service users from the public institutions, which offer the elderly suicide prevention services were examined. The results classified the service provider's view, service users view and multi-dimensional view. The research method is a case study of qualitative research method. The results of the study found that the analysis commonly perceived from the perspectives of both the chiefs and staff from the public institutions offering elderly suicide prevention service were 'the perception of structural obstacles during the process of practicing the services and focused on the achievement of experiencing changes in the service users and the community'. On the other hand, the analysis from the perspective of the service users turned out to be 'focusing on changes in the users'internal perception according to service experiences'. The meaning and essence of the analytical results perceived from each perspective are summarized as follows. First, the analytical results perceived of the chiefs of public institutions offering elderly suicide prevention service were 'the process in which the identification of the institution is rediscovered through the service'. Second, the analytical results perceived by the staff from the institution were 'being acknowledged in the community and organization while experiencing changes in the service users in the process of struggling to survive in such community and organization'. Third, the analytical results perceived by the service users were 'holding on to the lifeline at the edge of a precipice'. Based on the results, political and practical implications of elderly suicide prevention service were discussed.

• Journal of KIISE
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• v.42 no.5
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• pp.591-600
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• 2015

SLA (Service Level Agreement) is an essential factor that must be guaranteed to provide a reliable and consistent service to user in cloud computing environment. Especially, a contract between user and service provider with SLA is important in an environment using a cloud service brokerage. The cloud computing is classified into IaaS, PaaS, and SaaS according to IT resources of the various cloud service. The existing SLA is difficult to reflect the quality factors of service, because it only considers factors about the physical Network environment and have no methodological approach. In this paper, we suggested a method to specify the quality characteristics of software and proposed a mechanism and structure that can exchange SLA specification between the service provider and consumer. We defined a meta-model for the SLA specification in the SaaS level, and quality requirements of the SaaS were described by the proposed specification language. Through case studies, we verified proposed specification language that can present a variety of software quality factors. By using the UDDI-based mediation process and architecture to interchange this specification, it is stored in the repository of quality specifications and exchanged during service binding time.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.21 no.4
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• pp.53-61
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• 2013

In-flight service, depending on the perceptions of service satisfaction because ever turns into a variable, which enables service providers the flexibility of a variable in the end flight service to suit your needs to providing comprehensive and proactive services of the crew will be motivated. In addition, the service provider's motivation to work in a confined space on board the flight service characteristics in-flight service will be a major impact on the environment. This service-oriented environment, in-flight service and motivation in order to verify the impact on services in Cape factors as independent variables and the dependent variable service-oriented multi-regression analysis was performed. As a result, the motivation of the crew and the crew of the service-oriented, with a voluntary service crew services dependent variable parameters that affect the behavior of the acts. Services and service-oriented motivation Cape factors significantly influence both the irradiated while the impact on voluntary service and results verification service aesthetics, cleanliness, and physical service environment, only the voluntary services of the crew a positive effect on that the effects were investigated.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.10B
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• pp.929-935
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• 2006

When the Internet phone service, generally PC-to-Phone, first entered into the telecommunications service market, no regulatory issues were arisen to manage the service within the regulatory framework because of it's low quality, no phone number assignment and etc. However, almost the same quality, more applications and cheaper price compared with the fixed telecommunications service, have changed the regulator's policy allowing Internet phone service within market mechanism. While incumbent fixed telecommunications service enterprises had given with tremendous duties to continue the job categorized 'facilities-based telecommunication service provider', and which can be unreasonable and unfair if Internet phone service enterprises are allowed to enter into the fixed telecommunications market without any regulation. Thus, new regulatory framework has worked for the Internet phone service named the VoIP service generally in the fixed telecommunications market. Recently, VoIP is provided not only in the fixed telecommunications market but also in the mobile market as Wi-Fi phone is feasible in the wireless LAN environment. Furthermore, bundled service of Wi-Fi and cellular phone service will be launched soon, and the next version will be the mobile VoIP service operating like a cellular phone service. Hence, we will meet similar situation when the VoIP sewice enters into the fixed telecommunications service market. And, in this paper, we prospect the regulatory issues arising when the wireless or mobile VoIP service enterprises enter the mobile market, by analyzing possible scenarios.

• 재활복지
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• v.17 no.4
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• pp.1-26
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• 2013

As the social development progress, social welfare policy for people with disabilities also advance to meet rights of people with disabilities. The personal assistance service(PAS) is the primary service system for persons with disabilities based on guaranteeing the self-determination. The purpose of this study was to compare the personal assistance service system between Japan and Korea to propose improvement plan for Korean system. The comparison of two countries was based on current situation analysis of PAS. The analysis on eligibility criteria, information referral, amount and type of services and service provider, appealing process and service fee deductible etc. The result showed that PAS in Korea is served according to administration convenience than personal need based. Korean PAS policies are limited to particular service amount and type of needed services to satisfy personal PAS need. Whereas, Japan PAS system is served on the philosophy of independent living paradigm and therefore, PAS is provided on personal service needs. The service emphasis is on self-determination and rights on service selection for persons with disabilities. The recommendation for improvement of PAS in Korea are as followed. First, PAS should served under independent living paradigm. Paradigm based service is important because it effects the main theme of PAS; the self determination and rights of service selection. Second, reconstruction of PAS system is needed. As it showed on analysis, eligibility criteria, information referral, amount and type of services and service provider, appealing process and service fee deductible need to be supplemented. Last, to better serve PAS, case management method should be apply. Case management would contribute to settlement of PAS system in Korea. Thru case management, participation opportunities of people with disabilities must be provided during the selection of service quantity and type of PAS.