• Journal of Digital Convergence
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• v.13 no.10
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• pp.9-17
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• 2015

China is the largest e-commerce market in the world. The Chinese online retail market is almost 40% larger than the US, and together these markets account for more than 55% of worldwide e-commerce. The Korea China FTA is likely to facilitate e-commerce activity between the two countries, as well as trade in the goods and services that enable e-commerce. Korean consumer goods can enjoy the benefits of the FTA because it has a competitive advantage in the Chinese market in terms of technology and quality. The purpose of this study is to examine legal issues of e-commerce chapters of the Korea China FTA and policy implications. Results of the study show that several implications based on the export vitalization of cross-border e-commerce of Korean products are offered. The Korean government needs to do the following: prepare for the subsequent negotiation of the e-commerce agreement, prepare for the classification issue of electronic transmissions, require mutual recognition of electronic authentication and electronic signatures, prepare for e-commerce dispute settlement mechanism and establish of strategies for the export vitalization of e-commerce.

• Proceedings of the KIEE Conference
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• 1999.07g
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• pp.3193-3195
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• 1999

본 논문은 전자유도방식을 이용한 무선인식시스템을 지하매설물에 적용하였다. 설계된 시스템은 송신주파수 132KHz, 응답주파수 66KHz로서 부반송파에 의한 ASK 방식으로 쌍방향 전송방식을 채택하였다. 실험결과 지하 2m 범위까지 4800bps의 전송속도로 60km의 이동속도를 갖는 차량으로 쌍방향 통신이 가능하여 차량을 이용한 지중 매설물 위치탐지 시스템 적용에 별다른 은제점이 없었다. 따라서 본 시스템의 도입으로 방대한 도면이나 DB에 의존해야 하는 기존의 지중 매설물 관리시스템에서 벗어나 정확한 현장 데이터에 의한 효율적인 지하 매설물 탐색은 물론 쌍방향 통신에 의한 신속한 매설물 데이터의 변경으로 신뢰성 있는 지중 매설물 관리가 기대된다.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.42 no.4 s.334
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• pp.1-8
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• 2005

The increased effective impurity due to the pocket ion implantation is well blown to give rise to a reduction of the effective mobility of halo MOSFETs. However, further decrease of the effective mobility can be observed in pocket implanted MOSFETs above the mobility reduction due to the Coulomb impurity scattering and the gate bias dependency of the effective mobility can also differ from the simple model describing the mobility behavior in terms of the effective impurity. Phonon scattering and surface scattering as well as impurity Coulomb scattering are also shown to be effective in the degradation of the carrier mobility of pocket implanted MOSFETs. Using the 1-D regional approximation the effect of the distribution of the inversion charge density along the channel on the drain current is investigated. The inhomogeneous channel charge distribution due to pocket implantation is also shown to contribute to the further reduction of the effective mobility in halo MOSFETs.

• Journal of Korean Society of Archives and Records Management
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• v.18 no.1
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• pp.79-99
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• 2018

The system for reporting record production has been operated to collect and transfer the public records adequately since the enactment of the Public Records Management Act in 1999. The Act, which was revised in 2007, regulates automated reporting methods in which the production reporting files are generated in the records creation systems and transferred to the records management systems. However, only one type of record is being notified electronically among seven types, which should be notified under the Act. The remaining six types of records are laboriously reported using complicated templates. Furthermore, the current working electronic notification mechanism is also causing various errors mainly because of inadequate specifications. This study analyzes the causes of failure of the electronic notification through the electronic records systems and suggests some policies for its improvement.

• Proceedings of the KIEE Conference
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• 2004.04a
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• pp.49-51
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• 2004

고전압 기기의 절연물 내부에서 부분방전 현상이 발생되면 절연파괴로 진전된다. 회전기기가 운전중인 상태에서 on-line 부분방전시험은 고정자 권선의 절연상태를 검사, 평가 할 수 있는 중요한 수단으로서 이러한 부분방전시험을 통하여 회전기기 시스템의 사고예방을 위한 진단을 할 수 있다. 부분방전 펄스는 10MHz $\sim$ 1GHz의 대역폭을 갖는 것으로 알려져 있으며, 이러한 고주파 대역의 전자파 에너지의 효과적인 검출을 위한 센서 중 하나로 웨이브가이드 구조의 고주파 검출센서가 존재한다. 기존의 전자기적 에너지를 검출하는 SSC (Stator Slot Coupler)센서를 한쪽 포트를 가지는 마이크로스트립센서 형태로 사용할 경우 접지면이 도체전체로 씌워져 있고 임피던스 정합을 위한 50옴의 칩저항이 신호라인과 접지사이 루프를 형성하여 기기 운전시 기기의 성능에 영향을 미칠 수 있는 단점을 가지고 있다. 이 단점을 보완하기 위해서 본 논문에서는 회전기내 부분방전 펄스의 전자기적 에너지를 검출할 수 있는 2선 평행 전송선로 라인을 응용한 부분방전 검출 센서를 제안하였고 시뮬레이션을 통해 성능을 입증하였다. 제안된 센서의 성능을 입증하기 위하여 2선 평행 전송선로 타입의 센서와 기존의 SSC (Stator Slot Coupler) 센서를 약간 변형시킨 마이크로 스트립 센서를 고정자 슬롯의 Wedge 부착한 후 두 센서 비교 분석하였다. 결과적으로 제안된 센서는 기존 SSC 타입의 마이크로스트립 센서에 비하여 더 간단한 형상을 가지며 운전 중 기기의 성능에 영향을 덜 미치는 효과를 얻을 수 있었다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1116-1117
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• 2023

항만 작업자를 위한 AR 글라스 기반 플랫폼으로, 작업 일지와 완료 기록을 시각적으로 확인하고 작업물을 촬영하여 관리자에게 전송할 수 있으며, 서버 기반 관리 시스템을 통해 개인화된 작업통지와 실시간 공지사항을 제공하여 작업자들의 편의성과 효율성을 높이는 것을 목표로 하는 커뮤니케이션 시스템을 설계 및 구현한다.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.12 no.3
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• pp.273-281
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• 2019

The energy consumed by buildings among the total national energy consumption is more than 10% of the total. For this reason, Korea has adopted the zero energy building policy since 2025, and research on the energy saving technology of buildings has been demanded. Analysis of buildings' energy consumption patterns shows that lighting, heating and cooling energy account for more than 60% of total energy consumption, which is directly related to solar power acquisition and window opening and closing operation. In this paper, we have developed a low - power IoT sensor module for window system to transfer acquired information to building energy management system. This module transmits the external environment and window opening / closing status information to the building energy management system in real time, and constructs the network to actively take energy saving measures. The power used in the module is designed as an independent power source using solar power among the harvest energy. The topology of the power supply is a Buck converter, which is charged at 4V to the lithium ion battery through MPPT control, and the efficiency is about 85.87%. Communication is configured to be able to transmit in real time by applying WiFi. In order to reduce the power consumption of the module, we analyzed the hardware and software aspects and implemented a low power IoT sensor module.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.46 no.7
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• pp.592-601
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• 2018

The GPS/INS integrated navigation system, which is one of the electronic equipments mounted on military aircraft store, can not directly receive GPS signals by the aircraft wing before the drop, so GPS navigation data is received from the aircraft and used for filter integration, afterwards, the integrated navigation is performed using the GPS information directly received through the antenna. In this case, it is possible to operate the mount in old aircraft without any modification of the aircraft when GPS data is transmitted using wireless. However, the delay occurs while the aircraft navigation data is transmitted to the integrated navigation filter of the aircraft store via wireless, which affects the time synchronization of the GPS measurement and the INS information, affecting the integrated navigation performance. In this paper, an algorithm to analyze and compensate the effect of generation and transmission delay that can occur when implementing GPS/INS integrated navigation system of aircraft store that receives GPS data via wireless.

• Electronics and Telecommunications Trends
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• v.32 no.3
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• pp.1-9
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• 2017

방송통신 기술기준은 국가에서 정하는 강제표준으로서 통신사업자 및 관련 기관이 준수해야 하는 의무 사항을 규정하고 있다. 2017년에는 "방송통신설비의 기술기준에 관한 규정"이 개정 공포(대통령령 제27998호, 2017.4.25.)되어 국내 통신설비 환경에 큰 변화를 가져 올 기술적 요건들을 의무화하고 있다. 건축물의 지하층부터 지상층까지 구내용 이동통신설비를 설치하도록 하여 어디에서나 이동통신이 가능한 환경을 구축하고, 구내통신망의 설계시 구내 간선계에 광신호를 다중화하여 전송하는 기술적 방안을 선택할 수 있도록 함으로써 공사비 절감 및 유지관리의 용이 화를 유도하는 등 다양한 내용을 내포하고 있다. 본고에서는 최근 개정된 "방송통신설비의 기술기준에 관한 규정"의 주요 내용들과 후속적인 조치로서 이루어져야 할 사항들에 대해 살펴 보고자 한다.

• Journal of the Microelectronics and Packaging Society
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• v.19 no.2
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• pp.47-53
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• 2012

Recently, by the increasing of data transmission rates, PCB is required high-speed data transmission rates and thin packaging. So optical PCB which is the combination of electrical layer and optical layer can be one of the solution to overcome the limitations of conventional electrical PCB. The most important factor in the implementation of optical PCB is optical interconnection. So the research on high-efficiency and passive alignment has been active. In this paper, we suggest built-in lens pluggable waveguide and we simulate its coupling efficiency and structural stability. Optical simulation results show that the proposed structure has higher efficiency than no lens structure about 1.86 times in transmitter and about 1.42 times in receiver. In structure simulation, inner lens has no damage in desorption process. Therefore, we shown that the proposed structure has a high coupling efficiency and structural stability.