• Journal of the Korean Society of School Health
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• v.20 no.2
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• pp.35-46
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• 2007

Purpose: To investigate the sexuality awareness of elementary school students according to viewing internet obscenity. Methods: The subject of this study was total 594 students of 6th grade at 3 primary schools in Gyunggi-do. The data were collected through a self-reporting questionnaire from December, 11 to December, 18, 2006. Results: 1. 19.2°% of respondents viewed internet obscenity. As for the first time they viewed it, 41.2% of respondents was when they were 6th grade students. Fifty percents of respondents viewed intemet obscenity accid ntly while surfing through the internet. As for the places where they viewed internet obscenity, 59.6% of respondents was at their house. Fifty percents of respondents answered that they felt no feeling after they viewed internet obscenity. There was a significant difference in viewing intemet obscenity according to gender. 2. The mean score of sexuality awareness was 46.4. There were significant differences in sexuality awareness according to gender, school record, and understanding about prohibition of the teenagers' viewing internet obscenity. Conclusion: We should provide lower grade students health education on internet obscenity preventive program at the home and school.

• Electronics and Telecommunications Trends
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• v.25 no.6
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• pp.38-49
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• 2010

LTE 시스템에서 이동성 관리란 단말의 아이들 상태에서 수행되는 셀 재선택 기능과 단말의 통신중에 수행되는 핸드오버 기능을 모두 포함한다. 특히, 핸드오버 기술은 '통신중 끊김없는 서비스 보장'이라는 단순 기술형태에서 UMTS, HSPA 및 CDMA2000-1X 등 서로 다른 네트워크간의 컨버전스를 통하여 효과적인 트래픽 로드 분산 사업자의 초기 시설투자 부담 감소, 그리고 가입자의 자유로운 네트워크 선택 및 이에 따른 저렴한 요금 혜택 등 사업자와 가입자 모두에게 새로운 비즈니스 모델을 제공하는 복합 기술 형태로 진화되고 있다. 본 고에서는 LTE/LTE-Advanced 시스템에서 무선링크 측정, 타깃 셀 결정, 패킷 손실 관리, 타깃 셀로의 통신로 스위칭 등 일련의 고속 제어절차를 통하여 packet lossless-, timeless- 및 seamless- connectivity가 기능하도록 설계된 핸드오버 기술 전반을 무선 액세스 네트워크 관점에서 다룬다. 본 고에 사용된 정보 소스는 3GPP LTE 표준 문서에 기반한다.

• Journal of Biosystems Engineering
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• v.24 no.3
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• pp.267-274
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• 1999

An internet and network based software and related interface have been developed, which can remotely control and manage an on-site operating system. Developed software modules were composed of two parts: monitoring/management modules and control/diagnosis modules were developed for the network status, warehouse, production and selling status. Modules of control with diagnosis were developed for the on-site operating system and interface. Each module was integrated and the whole modules have been tested with an automatic mushroom grading/sorting system which was built in a laboratory. Developed software modules worked successfully without any uncommon situations such as system down caused by the software or data transfer error. Each software module was developed independently in order to apply easily to other existing on-site systems such as rice processing centers, fruit and vegetable sorting, packaging and distribution centers scattered over the country.

• The Journal of the Korea Contents Association
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• v.4 no.4
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• pp.107-112
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• 2004

As the internet service evolves fast recently, guarantee request of QoS (Quality of Service) by characteristic of traffic source as well as high rate of data is going greatest. Accordingly intemet service technology also is changing rapidly, technology that guarantee QoS in existent network service technology is developed or network model that guarantee new QoS is presented. By DiffServ-aware-MPLS network that present in IETF (Internet Engineering Task Force) to guarantee QoS in this treatise does comparative analysis with existent network model, relative show that is superior, and present direction that compose next generation network wish to.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.29 no.5B
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• pp.491-497
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• 2004

In this Paper, we W a Hovel global traffic control architecture to isolate malicious network attacks and protect network infrastructure in Internet backbone networks. Unlike existing methods based on individual packets or flows, since the proposed detection and control methods are operated on the aggregate traffic level, the computational complexity can k significantly reduced, and they are applicable to develop a global defense architecture against network attack. Experimental results show that the proposed scheme can detect the network attack symptoms very exactly and quickly and protect the network resources as well as the normal traffic flows very efficiently.

• Journal of the Korean Society of School Health
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• v.20 no.2
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• pp.59-68
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• 2007

Purpose: The purpose of this study was to investigate the difference of sexual behaviors of college students according to internet pornography contact. Methods: Subjects consisted of 472 students of K college located in chungcheongbuk-do. The data were collected through a self-administered questionnaire from May, 21 to May, 31, 2007. Results: Eighty-seven percent (87.3%) of respondents contacted internet pornography. As for the first time they contacted it, forty-eight percent(48.3%) contacted it when they were middle school students. Forty-three percent(43.6%) contacted it one time per several months and twenty-one percent(21.2%) contacted it within 10 minutes. Sexual behaviors(hand grasping, hugging, kiss, masterbation, coitus, pregnancy, love expression in public place) showed significant differences according to Internet pornography contact experience, period, frequency, and time. Conclusion: College administration should investigate sexual behavior patterns according intemet pornography contact and provide all college students regular sexual health promotion program.

• Journal of Korean Library and Information Science Society
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• v.31 no.4
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• pp.111-138
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• 2000

The lxnpose of this study is to pmvide the basic data for developing rational classification scheme of intemet resources in the fields of the information & telecommunications technology. The coverage of this study is, kt, to dehe the concept of informtion & telecommunications, and also to investigate the division of information & telecommunications technology through the literature, seumd, to analyze the using library classification schemes for internet resources, and thud, to review classi6cation system of the directory search engines. In this study, I w new

• Korean Journal of Computational Design and Engineering
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• v.12 no.4
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• pp.233-244
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• 2007

Web Services are a distributed component technology based on XML and Web. The Web Services are used to integrate heterogeneous systems under the distributed environment. In this study, the concept of Web Services for CAD (WSC) is introduced, which aims at interoperation with CAD systems using the Web Services. This paper introduces one part of the WSC which enables remote users or applications to retrieve the geometries and the design history of CAD models using the Web Services. This paper proposes an architecture of the WSC, the data model and the interfaces for retrieving CAD model information, and the way to apply the WSC to commercial CAD systems.

• Proceedings of the IEEK Conference
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• 2000.07a
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• pp.533-536
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• 2000

In this paper, we proposed high performance packet forwarding engine for asynchronous transfer mode(ATM) based gigabit routers. The forwarding engine is based on ATM switch and accommodates four 622Mbps ports. The forwarding engine has been designed to be able to process the Intemet protocol(IP) packet at 2.5Gbps using the pipelined If header processing and lookup control mechanism. For high performance packet forwarding, we used content addressable memory(CAM) based routing coprocessor operating in hardware and implemented the pipelined lookup control function into a field programmable gate array(FPGA). The pipelined packet header processing mechanism enhanced the forwarding performance of the If packets ingressed from four different 622Mbps ports. Moreover, the If lookup controller designed to have the performance up to 12.5Mpps. The proposed forwarding engine is also designed to support differentiated services(DS) and multiprotocol label switching(MPLS).

• Review of KIISC
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• v.22 no.1
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• pp.7-13
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• 2012

최근까지 정보 기술 분야에서는 유비쿼터스(Ubiquitous)라는 용어가 크게 유행한 척이 있다. 현재는 다소 식상하게 들리는 용어일지도 모르지만 사물의 지능화와 통신화라는 유비쿼터스 개념은 이미 우리의 생활에 깊이 파고 들어왔다. 최근 유행하는 IT 기술인 스마트폰이나 지능형 전력망, 와이파이, 소셜 네트워크, 센싱 데이터 처리 기술과 개념은 이러한 유비쿼터스 기술의 대표적인 사례로 볼 수 있다. 국내에서 는 이러한 유비쿼터스라는 개념을 유비쿼터스 센서 네트워크(Ubiquitous Sensor Network: USN)라는 용어로서 2004년부터 정보통신부 혹은 지식경제부의 적극적인 지원에 힘입어 많은 기술적/산업적 성과를 이루기도 했다. 하지만 이러한 USN은 센서네트워크 개념으로 제한적으로 오용되는 경우가 많았다 이에 본고에서는 이러한 유비쿼터스 환경을 실현하는 사물의 지능화/통신화에 대한 기술 동향과 보안 기술을 논하기 위해서 USN과 거의 비슷한 개념이지만 국내외적으로 더욱 보편적으로 사용되고 있는 IoT(Intemet of Things) 용어를 사용할 것이며, 이러한 IoT에 대한 기술 동향과 보안 기술을 논하고자 한다.