• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.10a
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• pp.229-232
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• 2010

Smart Phone is the increasing use. Smart Phone can be run on that New or videos you want to connect to the Internet for downloading and viewing applications. But the wireless Internet have been found that Due to the vulnerability of the Internet, Smart Phone security vulnerabilities. This paper analyzes the vulnerability. Smart Phone droid that occur when connecting to the Internet. For information on Smart Phone to use to analyze network packet analysis and packet capture tools. Analysis is based on information from the Internet when you use Smart Phone Hack will demonstrate the process. Messenger, ID, to confirm the password, the actual internet ID, password access to the personal information that can be seized. In this study, hacking and security of the Smart Phone will contribute to the research process that Internet information and communication powers to strengthen the security of Korea.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.11
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• pp.2419-2426
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• 2009

This paper is a study on the implementation of internet phone for silver generation based on RFID system. Together with the development of internet, the commercial internet phone is being used widely. However the usage of internet phone is still not convenient with silver generation. In this paper, we use one of the internet phone type called application method and 13.56MHz RFID technology to improve the usage of internet phone. The new silver internet phone can make a phone call only by using RFID tag that has a picture or some information of callee.

• International Journal of Internet, Broadcasting and Communication
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• v.9 no.1
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• pp.35-41
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• 2017

In the rapid industrialization and civilization, the material and the life have been enriched, but smart phone and the Internet are spreading and the spirit of Korean modern people is falling into addiction without knowing themselves. In particular, according to the recent Internet addiction reported by the National Statistical Office, "the Internet addiction rate in 2014 is the highest among adolescents to 19 years old." This study empirically analyzed whether internet addiction, smart phone addiction, sports activities and reading affect adolescents' emotional intelligence and self-esteem. Regression analysis showed that internet addiction, smart phone addiction and sports activities affected emotional intelligence and reading did not affect. Also, internet addiction, smart phone addiction and sports activities were found to affect self-esteem and reading did not affect. Reading and emotional intelligence, reading and self-esteem seem to require further study in the future.

• The KIPS Transactions:PartC
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• v.10C no.4
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• pp.479-484
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• 2003

In the current Internet, it is difficult for an Internet Phone to guarantee the QoS due to variable network conditions such as packet loss rate, delay and bandwidth. In addition, the QoS of an Internet Video Phone is more hard to guarantee because of video data. In this paper, we investigate application-level QoS control schemes that can adapt to variable network conditions, and describe an error control scheme and a congestion control scheme. Based on these QoS control schemes, we have designed and implemented an Internet Video Phone System that supports adaptive audio and video delivery. Through experiments, we found that the Internet Video Phone can reduce the packet loss rate considerably as well as adjust the transmission rate considering other TCP flows.

• 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.

• Journal of Digital Convergence
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• v.3 no.2
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• pp.59-71
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• 2005

Nowadays, it is not unusual to buy and sell goods, service and information through the internet. As a result of rapid development of Information Technology(IT), business through the internet can be done without time Limitations, place restrictions and product limitations. However, internet shopping has been restricted a lot due to the need for physical connections to the internet in order to search for information and order what we want, and this is one of the biggest problems to the busy people of the 21st century. Therefore it is very natural to use mobile phones to do shopping through wireless internet easily and conveniently whilst on the move. The purpose of this research is to find out characteristics of mobile phone users in UK, Japan and Korea and 1) main aims of the mobile phone use, 2) reasons for ease of use of mobile phones, 3) favourite types of a mobile phone, 4) psychological stability of mobile phone users, 5) problems of mobile phone use, 6) purchase goods/services via mobile phone in the future. The research method used is questionnaire survey The research results will suggest how to take actions to promote mobile commerce in the future.

• The Journal of the Korea Contents Association
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• v.13 no.2
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• pp.451-459
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• 2013

The purpose of this paper is to investigate the role of the internet based deviant behavior of smart phone during work hours on performance and the antecedents to deviant behavior mechanism. To do this, this paper proposes a theoretical model consisting of factors such as internet-based deviant behavior, work performance and intention, habit as it's influencing factors. It was analyzed via a survey of employees using smart phone at workplace. The results of this empirical study is summarized as followings. First, internet-based deviant behavior using smart phone has a negative effect on work performance. Second, intention and habit toward internet-based deviant behavior using smart phone are identified as the determinants of it's behavior. The findings have significant implications for the framework of internet-based deviant behavior using smart phone in the workplace.

• Proceedings of the IEEK Conference
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• 1998.10a
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• pp.487-490
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• 1998

In this paper, we describe a method for two-way communication service for smart phone integrated with pager which receive various kinds of Internet service information and pushes this information into smart phone to make it available for Internet assess. In this method, the server can push the status data of message boxes into the smart phone and it makes connection to the server automatically. The proposed method will make it possible to manage and excange the information and resources in an efficient manner during idle time, and will provide the potential capabilities of developing a variety of new Internet services for the system.

• The Journal of the Korea Contents Association
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• v.17 no.2
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• pp.375-383
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• 2017

The purpose of this study is to verify the moderating effect of self-esteem between emotional trauma and internet smart phone addiction of adolescents. For this purpose, this study confirmed moderating effect by setting emotional trauma as predicting variable, self-esteem as moderating variable and internet smart phone addiction as dependent variable. The study conducted a questionnaire survey on 645 middle school students regarding emotional trauma, self-esteem and internet smart phone addiction. The results of this study are as follows; first, emotional trauma had negative correlation with self-esteem and positive correlation with internet smart phone addiction. Self-esteem had negative correlation with internet smart phone addiction. Second, as the result of hierarchical regression analysis, there was an interaction effect of emotional trauma and self-esteem on internet smart phone addiction. The meaning of this study are as follows; first, it is proved that one of the causes of internet smart phone addiction is adolescent's emotional trauma and, second, it is proved that the intervention of self-esteem is required to reduce the negative effect of adolescent's emotional trauma. That is, it turned out that self-esteem moderated the relationship between emotional trauma and internet smart phone addiction.

• Journal of Internet Computing and Services
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• v.4 no.1
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• pp.1-8
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• 2003

Nowadays, various wireless internet contents are serviced in a cellular phone. However, because of the memory limit of the cellular phone, you should delete the wireless internet contents periodically. Also it has been quite inconvenient to move the existing data to a new cellular phone. In this paper I proposed MobileFolder to reuse wireless internet contents and provided a simple client application in a VM environment.