• Proceedings of the Korea Information Processing Society Conference
• /
• 2013.11a
• /
• pp.890-891
• /
• 2013

인터넷이 발달함에 따라 사용자들은 웹에서 여러 가지 일의 처리가 가능하게 되었다. 최근에는 휴대폰의 성능과 기능이 발달하고 스마트폰의 보급이 급속히 확산되면서 스마트폰을 사용하여 많은 양의 데이터들의 전달이 이루어지고 있다. 이러한 처리 과정에서 개인 및 기업정보들이 유출될 수 있는 위험이 증가하고, 스마트폰과 클라이언트 사이에서의 개인, 기밀 정보가 SSL (Secure Sockets Layer) 또는 TLS (Transport Layer Security)프로토콜을 통해 암호화 되어 전송 되어도 프록시 서버에서 인증서 변조를 통하여 유출될 가능성이 점점 높아지고 있다. 본 논문에서는 스마트폰 상의 안전한 통신을 위해 많이 이용되는 SSL/TLS의 전송구간에 대한 취약점 분석 등 보안 이슈와 연구 방향에 대해 논의한다.

• Journal of the Korea Convergence Society
• /
• v.10 no.7
• /
• pp.33-37
• /
• 2019

Nowadays, the needs for linking smart devices are growing fast because of wide spread of smart devices such as smart TV, smart phones, smart pad and so on. This paper presents a game framework for linking smart TV and smart phones and proves its applicability by developing an example contents. The problem of connection between smart devices is basically a problem of connection between heterogeneous devices. The problem is that data transmission and reception between heterogeneous devices must be considered. Therefore, the core data is implemented by adopting the concept of cloud computing and storing it in a server, and in a smart TV, playing the game by using this data. The proposed framework could be applied to a lot of applications such as computer games.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.7
• /
• pp.121-129
• /
• 2017

The purpose of this study was to examine the mediating effects of experiential avoidance on the relationships between life stress, depression and smartphone addiction in nursing college students. This study was conducted using a descriptive survey design. Participants were 283 nursing college students attending freshmen and sophomore yearsat one university in Jeollanam-do. Data were collected from September 1 to 15, 2015 using self-report questionnaires. Data were analyzed using descriptive statistics, Pearson's correlation coefficient, hierarchical regression and Sobel test with SPSS 21.0. There were significant positive correlations between life stress, depression, smartphone addiction and experiential avoidance. Experiential avoidance partially mediated the relationship between life stress and depression of nursing students. Additionally, experiential avoidance partially mediated the relationship between their life stress and smartphone addiction. The results show that experiential avoidance plays a key role in psychopathology and grows with depression and smartphone addiction. Based on the present findings, nursing interventions should be developed to decrease experiential avoidance, with additional consideration towards the relationship between life stress and experiential avoidance, in order to prevent depression and smartphone addiction among nursing college students.

• The Journal of Korean Academy of Sensory Integration
• /
• v.16 no.3
• /
• pp.1-10
• /
• 2018

Objective : The purpose of this study was to investigate smartphone addition and sensory processing character depend on gender for occupational therapy (OT) students, and to identify the correlation between smartphone addiction and sensory processing feature. Methods : Participants of this study were 168 (70 male/90 female) students majoring occupational therapy. Measurements in this study were a questionnaire about general information of subject, smartphone addiction scale, and adult/adolescent sensory profile. Data collection period was from November 2017 to March 2018. Methods for the data analysis included descriptive statistics, independent t-test and Pearson correlation of SPSS 22.0. Results : In term of the purpose of using smartphone, majority response was communication and gaming ranked in next. There were difference between male and female in the total smartphone addition, cyberspace-oriented relationship, withdrawal and tolerance. The result showed that all sensory processing are related with total smartphone addition (r = .236 ~ .603) for man. And for women, total smartphone addition is little related with the taste/smell processing (r= .290), visual processing (r= .324), touch processing (r= .214), low registration (r= .214), sensory sensitivity (r= .243), and sensory avoiding (r= .217). Conclusion : This study found that there is difference between male and female in terms of relation between smartphone addition and sensory processing feature according for occupational therapy students.

• Digital Contents
• /
• no.4 s.143
• /
• pp.112-114
• /
• 2005

스마트폰의 도입은 소프트웨어개발자에게 새로운 기회를 가져다 줬다. 참신하고 개방적인 소프트웨어 플랫폼은 개발자가 빠르게 성장하는 시장환경 아래서 새로운 모바일 응용소프트웨어 와 서비스를 설계할 수 있게 한다. 노키아의 시리즈 60 스마트폰 설계용 응용소프트웨어 플랫폼 및 그에 상응하는 개발도구는 바로 이러한 스마트폰 시장의 발전을 촉진하기 위해 개발된 GUI와 심비안 OS 기반의 응용 소프트웨어이다. 이 플랫폼의 SDK(Software Development Kit)는 자바 또는 C++로 소프트웨어 개발을 더 쉽게 할 수 있도록 제공한다. 또한 소프트웨어 다운로드와 운용에도 편리하다. 이 플랫폼은 소프트웨어 개발자, 운영사와 설비제조회사 모두 자기에 적합한 설계도를 만들 수 있도록 하고 있다. 설계도는 서로 다른 설비와 네트워크 사이에서 사용할 수 있다. 이미 LG전자, 파나소닉, 삼성, 센도, 지멘스 등에 라이센스돼 그 제품의 우수성이 입증된 노키아의 시리즈 60 스마트폰 플랫폼에 대해 자세히 소개한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2014.10a
• /
• pp.496-498
• /
• 2014

최근 무선 통신 기술의 발전으로 무선 매체를 통한 다양한 서비스가 활발해지고 있다. 그 중 블루투스를 기반으로 하는 스마트 폰 어플리케이션 시장이 증가하고 있다. 블루투스는 근거리 무선 네트워킹 기술로서 무선이라는 요소와 빠른 전송속도라는 요소를 갖추고 있다는 장점이 있는 반면, 높은 전력소모와 다채널의 갯수 제한 등과 같은 단점이 존재한다. 이러한 블루투스의 단점을 보완하여 부상되고 있는 것이 지그비(Zigbee) 무선통신기술이다. 지그비는 블루투스나 와이파이 등의 기술보다도 저전력, 저가격, 다채널, 브로드캐스팅, 사용의 용이성을 지원하고 있다. 본 논문에서는 센서와 스마트 폰 사이의 무선통신기술로서 지그비를 이용하여서 근거리 무선 네트워크 시스템을 설계하여서 블루투스에 비해 낮은 전력소모와 다채널의 지원을 이용하여 다수의 다양한 센서를 스마트 폰과 근거리에서 실시간으로 무선 네트워크를 제어할 수 있는 시스템을 설계하였다.

• Journal of The Korean Association of Information Education
• /
• v.18 no.4
• /
• pp.567-574
• /
• 2014

This paper is about an analysis of the result of the survey which is how the use of smartphone affects the creative personality, focused on 4th and 6th grade in Elementary school, by smartphone addiction self-diagnosis and creative personality test. As a result of the analysis, 6th graders were influenced by their possession of smartphone and the degree of one's smartphone addiction on their creative personality. However, the usage period of smartphone did not turn out to affect their creative personality. In addition, none of the factors above, related to students' smartphone usage, influenced the creative personality of 4th graders. Particularly, there was a negative correlation between the level of students' smartphone addiction and the creative personality and it was found that whether the students own a smartphone or not played a crucial role in creative personality rather than the usage period of smartphone. Therefore, students should be properly educated how to use smartphone appropriately and to prevent them from smartphone addiction in order to improve creative personality which is one of the core competences in 21st century.

• Journal of the Korea Society for Simulation
• /
• v.18 no.1
• /
• pp.9-16
• /
• 2009

Since a deadlock is a condition in which the excessive demand for the resources being used by others causes activities to stop, it is very important to detect and prevent a deadlock. About the deadlock detection analysis methods are may divide like as Siphon, DAPN and transitive matrix, but it's very difficult to evaluate the performance. Since DES (Discrete Event Systems) is NP-hard, and these detection and avoidance methods used various factors in each technique, it's made difficult to compare with each other's. In this paper, we are benchmarked these deadlock detection analyze methods based on the complexity, the detection time and the understanding after approached to one example.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.18 no.4
• /
• pp.941-948
• /
• 2014

As smart phone became popular, a word smart phone syndrome is also commonly used among us. Its excessive uses cause adverse effects on daily lives such as mental and physical health education and individual relationships. This paper targeted to undergraduate students who are mostly using smart phones to analyze on their perception of smart phone syndrome and a reality of typical syndrome such as digital forgetfulness, smart phone addiction and dependence on Kakaotalk. It also suggested basic countermeasures for preventing smart phone syndrome. The perception on smart phone syndrome of undergraduate students using over the average 5 hours a day was resulted to be very low, and it is analyzed smart phone syndrome including digital forgetfulness, smart phone addiction and dependence on Kakaotalk is quite serious, so that proper countermeasures and the actions are required.

• Solar Energy
• /
• v.12 no.3
• /
• pp.28-36
• /
• 1992

The performance of a latent heat storage system using a thermosyphon as the heat transfer device between the heat source and the phase change material was investigated experimentally. In order to increase the effective conductivity of the phase change material, layers of copper wire mesh were immersed in the paraffin wax(Sunoco P-116) in such a way that they also may be considered as fins of the thermosyphon. The important results are as follows : (1) The void space of the wire mesh allowed the convection to occur, thus enhanced the performance of the system : (2) The increase of the number of layer of wire mesh increased the conduction heat transfer. However, it also had adverse effect of subduing convective motion of liquid wax : and (3) Overall heat transfer coefficient and thermosyphon conductance increased with the increase of the number of layer of wire mesh, whereas the heat transfer coefficient between the thermosyphon and the wax decreased.