• Journal of the Korea Society of Computer and Information
• /
• v.22 no.3
• /
• pp.53-60
• /
• 2017

The purpose of this study is to provide empirical and quantitative analysis on user's perceived privacy, security, and user satisfaction when providing visualization information about objects and service provider behaviors that users can not perceive in internet service process. Through previous research, we have examined the importance of privacy and security factors as a key factor to be considered for the characteristics of the Internet of things and the Internet of things. In addition, service blueprint, which is one of the service design methodologies to examine the flow of service usage in providing Internet service of things, was examined. In the flow of things internet service utilization, it is found that the things that are out of the user's cognitive area and the behavior of the service provider take up a large part. Therefore, the hypothesis that the trust of the Internet service security and the satisfaction of the user experience can be improved by providing the security visualization information about the behavior of the object and the invisible service provider in the non-contact aspect of the user and the object. In order to verify the hypothesis, we conducted experiments and questionnaires on the use of virtual objects' internet environment and conducted statistical analysis based on them. As a result, it was analyzed that visual information feedback on non - contact and invisible objects and service provider's behaviors had a positive effect on user's perceived privacy, security, and satisfaction. In addition, we conclude that it can be used as a service design evaluation tool to eliminate psychological anxiety about security and to improve satisfaction in internet service design. We hope that this research will be a great help for the research on application method of service design method in Internet environment of objects.

• Asia pacific journal of information systems
• /
• v.14 no.2
• /
• pp.61-86
• /
• 2004

Despite their potential value, the mobile Internet services in the domestic market have not been widely accepted as industry experts have expected. To understand why, this study uses the TAM, Technology Acceptance Model, and explores the factors affecting the usage behavior of the end-users. Based on statistical analysis of survey data, we show that social influence and perceived ease of use affect perceived usefulness, and that self-efficacy and focus significantly influence perceived ease of use. Furthermore, perceived usefulness is shown to play a significant role in explaining actual usage of the mobile Internet services. However, contrary to the hypothesized relationships, service quality, focus, and innovativeness of users turn out to have little impact on the traditional endogenous TAM variables such as perceived usefulness, perceived ease of use, and actual usage behavior. Based on these results, we attempt to provide managerial implications for the domestic mobile Internet service providers and to suggest future research directions in this domain of research.

• The Journal of Information Systems
• /
• v.14 no.1
• /
• pp.171-195
• /
• 2005

The current study investigates major factors which influence the consumer's selection of internet shopping malls. Based on the technology acceptance model(TAM)(Davis, 1989) and trust theory(McKnight & Chervany, 2001), consumer selection factors from marketing research(Burke, 1997;Dodds et al, 2001), perceived usefulness, perceived ease of use, trust, service quality, and product price were hypothesized as to affect the consumer's decision to choose one's specific internet shopping malls. The study developed a research model to explain the shopping mall selection and collected the survey responses from 312 internet shopping mall users. The results of the current research indicate that all the research variables employed in the study, perceived usefulness, perceived ease of use, trust, service quality, and product price, are found to significantly influence the consumer's shopping mall selection decision. Among the influencing factors, price, service quality, and trust showed a greater effect on the shopping mall selection than usefulness and ease of use. This result implies that purchase-related variables such as price and service quality may be more critical to attracting customers and thereby raising the sales volume of the shopping mall, than the web site's usefulness and ease of use.

• Journal of Information Technology Services
• /
• v.14 no.2
• /
• pp.253-273
• /
• 2015

Cloud computing is provided on demand service via the internet, allowing users to pay for the service they actually use. Categorized as one kind of cloud computing, SaaS is computing resource and software sharing model with can be accessed via the internet. Based on virtualization technology, SaaS is expected to improve the efficiency and quality of the IT service level and performance in company. Therefore this research limited cloud services to SaaS especially focused on collaborative application service, and attempts to identify the factors which impact the performance of collaboration and intention to use. This study adopts technological factors of cloud SaaS services and factors of task characteristics to explore the determinants of collaborative performance and intention to use. An experimental study using student subjects with Google Apps provided empirical validation for our proposed model. Based on 337 data collected from respondents, the major findings are following. First, the characteristics of cloud computing services such as collaboration support, service reliability, and ease of use have positive effects on perceived usefulness of collaborative application while accessability, service reliability, and ease to use have positive effects on intention to use. Second, task interdependence has a positive effects on collaborative performance while task ambiguity factor has not. Third, perceived usefulness of collaborative application have positive effects on intention to use.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.16 no.1
• /
• pp.27-43
• /
• 2005

This research is a study designed to identify the needs for information literacy instruction for the U.S. public library Internet service users. The levels and needs of Internet service users as well as the development and effectiveness of the Internet services at the U.S. public libraries were investigated. The survey was administered to the Internet service users at four public libraries in the upper Midwest region of the U.S.A total of 386 surveys were collected and analyzed. The result showed that as the years of Internet use experience and the level of expertise increases, user satisfaction decreases. However, the users who had taken any Internet class showed more satisfaction than who had not. This research offers a new direction and need for information literacy instruction for public library Internet service users.

• Journal of Information Technology Applications and Management
• /
• v.13 no.4
• /
• pp.155-165
• /
• 2006

Along with the evolution of wireless internet environment, information services in mobile internet are being explosively increased. However, due to the high expense for the use of those services, it is not easy to collect the devoted customers. In order to overcome the adverse conditions, the service should be supported by a strategic application system which facilitates easier and fast service for customer's information needs than that of traditional on-line internet. In this paper, we investigate the strategy how to provide the information service under the customer satisfaction, and also consider some ways of personalization of information service and information provision in real-time. As a result of the works, we develop a system, MoSA-CRM(Mobile Service Application based on CRM) to support customer-oriented information service. We believe that the MoSA-CRM system can provide some benefits for information providers in mobile e-commerce market such as flexibility in business strategy, systematic customer relationship management, and growth in financial ability.

• Journal of Korea Society of Digital Industry and Information Management
• /
• v.6 no.4
• /
• pp.95-105
• /
• 2010

DNS(Domain Name System) is a huge distributed database that converts host name to IP address. We are expecting the importance of DNS is more increased because many Internet application services appear according to the continuous increase of Internet users and nearly all the Internet application services use DNS. To prevent the interruption of DNS service, DNS server is configured with primary DNS server and a secondary DNS server which takes the place of primary DNS server in case of the service interruption. But this scheme is difficult for providing DNS service constantly in case of DDoS attack, which brings about much network load or network problems in DNS server group. Therefore, This paper proposed the scheme to locally distribute load of DNS server, and the use of address system to group the distributed DNS servers. Also, it proposed the authentication scheme of the correspondent server in case the server is changed in DNS server group having grouping address. In this paper, it is shown that the prosed scheme guarantees the improved service reliability with maintaining the present service performance through the evaluation. Through this, we can expect the high improved DNS service can be provided in the Internet environment in the future.

• ETRI Journal
• /
• v.37 no.4
• /
• pp.657-666
• /
• 2015

We propose a two-stage resource allocation algorithm for the high link utilization of an orthogonal frequency-division multiplexing passive optical network (OFDM-PON). An OFDM-PON is assumed to use a synchronous frame structure in supporting service differentiation. In distributing resources, the proposed algorithm first allocates a time window for each optical network unit (ONU), and then it arranges a subchannel, which is a group of subcarriers. This algorithm needs to satisfy two constraints. First, computations for the resource allocation should be done using a frame unit. Second, an ONU has to use a single subchannel to send upstream data for multiple services within a frame duration. We show through a computer simulation that the proposed algorithm improves the link utilization.

• Korean Management Science Review
• /
• v.20 no.2
• /
• pp.61-80
• /
• 2003

At the end of 2002, about 91% of mobile telecommunications service subscribers have mobile phones with the mobile internet access function. However, despite the rapid spread of mobile internet phones, the number of real mobile internet users is very small. In this situation, this paper focuses on the effect of consumer demographics such as sex, age, job, etc. and consumer life-style on the use of mobile internet. This study tries to find the answers about the following questions ; 1) Which consumer demographic variables affect the use of mobile internet\ulcorner 2) How can we categorize the consumers with the mobile internet phones\ulcorner 3) What are the characteristics of categorized groups and is there any difference in using the mobile internet\ulcorner For this purpose, an off-line survey was conducted over 1,500 consumers with the mobile internet phones. This study concludes as follows ; The important demographic factors of the use of mobile internet are age, job, marriage, academic career and personal spending money. Totally viewed in the consumer demographics, the typical type of mobile internet users can be described as the young student. On the other hand, sex and family income variables do not significantly affect the use of mobile internet. And the mobile internet users can be categorized by the life-style into four distinct groups, which are named as the innovation oriented group, the practicality oriented group, the conservation oriented group, the ostentation oriented group. These findings show that the consumer life-style have various effects on the use of mobile internet.

• The Journal of the Korea Contents Association
• /
• v.9 no.11
• /
• pp.335-347
• /
• 2009

This research analyzes the use intention of the ubiquitous service based on the technology acceptance model (TAM). This study investigates the characteristics of the ubiquitous service like the ubiquity, personality, connectivity, and location. The major results of this study are as follows. The ubiquity, connectivity, and location had positive influences on the perceived usefulness and perceived ease of use. And, the personality had the positive influence of the perceived ease of use. The perceived usefulness and perceived ease of use had the positive effect to an attitude, and the attitude had the positive effect to an use intention. When it consider the market share or the growth potential of the wireless internet service industry, this research results will be able to tilize as the basic information of an industry.