• Journal of Korean Home Economics Education Association
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• v.20 no.4
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• pp.187-203
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• 2008

This research focused on the internet addiction and family communication in adolescents. The subjects were the 394 middle school students living in Gwangju. Data were analyzed with Frequency, Percentage, Mean, Std, Cronbach's $\alpha$, T-test, one way ANOVA, Duncan's Test, Pearson's Correlation, and Multiple Regression using SPSS/PC WIN 14.0 program. The major findings were as follows: 1. Schoolboys internet addiction were higher than schoolgirls. Open communication was higher than median but problem communication was slightly lower than median. 2. The adolescents' internet addiction showed significant difference according to sex, parent's absence frequency, the level of living, parent's attitude about internet, the motive, the purpose, and the times required for internet. 3. Family communications showed significant difference according to internet addiction level. 4. Open communication was influenced by the level of living, parent's attitude about internet, the times required for internet and the level of internet-addiction and was explained about 19% by these variables. Problem communication was influenced by the level of internet addiction and the level of living and was explained about 14% by these variables.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.01a
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• pp.93-96
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• 2011

스마트폰(Smart Phone)은 휴대폰과 개인휴대단말기(PDA)의 장점을 결합한 인터넷 통신과 정보검색 등 컴퓨터 지원 기능을 추가한 지능형 단말기이다. 이것은 사용자가 원하는 어플리케이션을 설치할 수 있는 특징이 있다. 본 논문에서는 대중화 되어가고 있는 스마트폰과 QR(Quick Response) Code를 이용하여 대학 내의 학생들이 도서를 간편하게 관리할 수 있는 프로그램을 구현하였다. 이 프로그램은 로그인을 위한 고객등록, 로그인을 통한 도서정보 등록, 등록된 도서 검색으로 구성되었고, 도서정보가 스마트폰 내에 있는 DB에 저장된다. 도서 등록 시에는 도서의 ISBN 번호와 웹뷰를 이용한 도서 최저가 확인 및 저장이 가능하다. 이와 같은 도서 정보관리가 ISBN 번호와 QR code로 나타남으로서 사용자에게 스마트폰을 이용한 편리한 서비스를 제공할 수 있게 하였다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2017.07a
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• pp.127-128
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• 2017

해마다 대포차로 인한 사건 사고가 많이 일어나고 있으며, 피해율이 점점 더 증가하는 시점에서 검거율은 현저히 낮다. 이러한 문제를 줄이기 위해 대포차 검거 애플리케이션을 개발하고자 한다. 본 연구는 GPS와 사진으로부터 텍스트를 추출하는 기능을 활용하여 대포차를 검거하는 데 도움을 주는 애플리케이션이다. 사용자가 정차 및 주차되어 있는 차의 번호판을 사진 촬영 기능을 활용하여 자동으로 사진을 분석을 통해 차량의 번호를 인식하고, GPS를 활용하여 촬영한 장소의 위치 값을 추출하고 대포차 여부를 확인한다. 촬영한 차량이 대포차로 식별되면 관리 서버에 등록되고 대응 절차에 의해 대포차 검거 절차를 진행한다. 대포차의 실시간 검거를 위해 대포차 대응서버에서는 관리자에게 실시간으로 정보를 전송하고 알림 기능을 통해 검거 절차가 진행된다. 또한 실시간 대응에 어려움이 있는 상황에서는 자주 신고가 접수되는 출몰지역 정보를 관리자가 유추할 수 있도록 통계정보를 제공하여 추후 잠복에 의한 검거 정보를 제공한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2015.07a
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• pp.79-80
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• 2015

본 프로젝트는 신입생들을 대상으로 대학캠퍼스 및 대학생활을 빠르게 적응할 수 있도록 시설물의 위치 및 활용방법, 학사 행정, 수강 및 강의실 등 학교생활에 유용한 정보들을 자연스럽게 전달할 수 있는 오락용 어플리케이션이다. 빠른 학교생활적응과 부가적이고 적절한 유용 정보를 제공하기 위해 미션을 해결하면서 목적을 달성하는 시나리오로 최종 미션을 완성할 수 있도록 구성하였다. 기술적으로는 QR코드를 활용한 정보 및 미션을 제공하고 GPS 위치 정보를 활용한 자신의 위치와 캠퍼스 맵, 미션 힌트 정보를 제공한다. 이러한 미션 수행 과정을 통해 대학생활에 유용한 정보를 얻을 수 있는 오락용 프로젝트이다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.6
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• pp.9-14
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• 2016

The Korea Communication Commission(KCC) measures communication qualities of mobile phones' voice calls, mobile internet, and broadband internet to provide quality communication services. It particularly focuses on measuring qualities of mobile internet data that is on the rise in terms of usage. However, existing quality measurement simply measures the speed of mobile communication through data without providing much information to users and does not disclose measured data, making it hard for individuals to objectively determine their communication quality. Thus, to improve such problems, the author suggests a system that measures qualities of mobile communication through Android. The method guarantees user convenience and reliability and improved mobile communication by making it easy for users to select the quantity of data to be used. It also saves the current GPS obtained through GPS module or mobile communication network and transfers measured data to servers so that the data can be processed into new information and be reinterpreted.

• Journal of the Korea Convergence Society
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• v.8 no.11
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• pp.57-62
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• 2017

With various sensors and communications capabilities, the Internet is growing larger as the internet can communicate with the Internet. Given the growing vulnerability of the internet market, the development of security and security is increasing, and the development of the internet is actively evolving and the development of the internet is actively being carried out. In particular, it is required to introduce lightweight and secure authentication schemes, especially those that are difficult to use due to the difficulty of using authentication schemes. Thus, the safety of the secure authentication system of the Internet is becoming very important. Therefore, in this thesis, we propose certification technologies on secure objects to ensure correct, safe communication in the context of the internet context.

• 제어로봇시스템학회:학술대회논문집
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• 2000.10a
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• pp.96-96
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• 2000

Today, Internet is an everyone's tool for information searching and communication. Furthermore, with the wireless Internet, we can get connected while moving. The Internet, especially wireless Internet could be an excellent data Link for DGPS because of its interactive two-way communication capability and well-constructed network infra. The user with his own mobile communication device doesn't necessarily get equipped with the other specific data link for DGPS This paper will show that how the Internet based DGPS system could be constructed on the computer network in real time, Its performance is demonstrated by the field experiments. Comparing to the DGPS system with the conventional data Links, Like beacon and FM DARC, the Internet based DGPS could provide us a convenient and cost effect DGPS system.

• International Journal of Computer Science & Network Security
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• v.23 no.1
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• pp.71-77
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• 2023

In the current Internet system, there are many problems using anonymity of the network communication such as personal information leaks and crimes using the Internet system. This is why TCP/IP protocol used in Internet system does not have the user identification information on the communication data, and it is difficult to supervise the user performing the above acts immediately. As a study for solving the above problem, there is the study of Policy Based Network Management (PBNM). This is the scheme for managing a whole Local Area Network (LAN) through communication control for every user. In this PBNM, two types of schemes exist. As one scheme, we have studied theoretically about the Destination Addressing Control System (DACS) Scheme with affinity with existing internet. By applying this DACS Scheme to Internet system management, we will realize the policy-based Internet system management. In this paper, to realize it, concept of the Internet PBNM Scheme is proposed as the final step.

• International journal of advanced smart convergence
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• v.8 no.2
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• pp.109-115
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• 2019

Currently, LPWA(Low Power Wide Area) communication technology is widely used due to the development of IoT(Internet of Things) technology. Among the LPWA technologies, LoRaWAN(Long Range Wide Area Network) is widely used in many fields due to its wide coverage, stable communication speed, and low-cost modem module prices. In particular, LoRa(Long Range) can easily construct LoRaWAN with a dedicated gateway. So many organizations are building their own LoRaWAN-based networks. The LoRaWAN Gateway receives the LoRa packet transmitted from an End-device installed in the adjacent location, converts it into the Internet protocol, and sends the packet to the final destination server. Current LoRa Gateway uses a single-hop method, and each gateway must include a communication network capable of the Internet. If it is the mobile communication(i.e., WCDMA, LTE, etc.) network, it is required to pay the internet usage fee which is installed in each gateway. If the LoRa communication is frequent, the user has to spend a lot of money. We propose an idea on how to design a multi-hop protocol which enables packet routing between gateways by analyzing the LoRaWAN communication method implemented in its existing single-hop way in this paper. For this purpose, this paper provides an analysis of the standard specification of LoRaWAN and explains what was considered when such protocol was designed. In this paper, two gateways have been placed based on the functional role so as to make the multi-hop protocol realized: (i) hopping gateway which receives packets from the end-device and forwards them to another gateway; and (ii) main gateway which finally transmits packets forwarded from the hopping gateway to the server via internet. Moreover, taking into account that LoRaWAN is wireless mobile communication, a level-based routing method is also included. If the protocol proposed by this paper is applied to the LoRaWAN network, the monthly internet fee incurred for the gateway will be reduced and the reliability of data transmission will be increased.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.11a
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• pp.165-165
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• 2004