• Electric Engineers Magazine
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• v.247 no.3
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• pp.30-33
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• 2003

US NEC와 CEC 사이의 양국 관계위원회는 몇년간 지속되고 있다. 이 위원회는 1994년 1월의 CANENA와 연계하여 멕시코의 참가를 촉진시키기 위하여 개최되었다. 멕시코 참석자들이 표명한 관심의 결과로 동 위원회는 북 아메리카 전기설비 코드에 관한 관계 위원회의 이름을 바꾸고 그 위원회에 멕시코 대표를 포함시켜서 확대하자는 것을 투표하였다.

• Electronics and Telecommunications Trends
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• v.14 no.4 s.58
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• pp.67-80
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• 1999

본 고에서는 일본의 국제 표준화 활동의 동향을 살펴보고 우리나라에의 시사점을 제시하고 있다. 우선 일본의 기본적 표준화 정책방향을 검토한 후, NTT와 KDD 등 통신사업자와 NEC 등 통신제조업자의 국제 표준화 전략을 분석하였다. 이를 토대로 우리나라 표준화 정책의 시사점을 기술하였다.

• The Science & Technology
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• v.33 no.9 s.376
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• pp.34-35
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• 2000

모든 직원이 대학생과 대학원생으로 구성된 '소프트 캠프'가 컴퓨터시스템 보호프로그램(PC-KEEPER)을 독자 개발, 국내시장 독점은 물론 일본의 대표적 반도체 회사인 NEC와 국내소프트웨어업계 사상 최대 규모인 2백억원어치 수출계약을 맺고 미국시장 개척에도 나서공 있다.

• Proceedings of the Korean Magnestics Society Conference
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• 2008.12a
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• pp.139.2-139.2
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• 2008

• Journal of Community Nutrition
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• v.4 no.2
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• pp.78-82
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• 2002

This study compared the effect of Korean vegetarian and omnivorous diets on plasma carnitine concentrations and urinary carnitine excretion. Twenty lactoovovegetarian and twenty omnivorous female college students consented to participate in this study. Daily nutritional intake and plasma and urinary nonesterified carnitine (NEC), acid-soluble acylcarnitine (ASAC), acid-insoluble acylcarnitine (AIAC), and total carnitine (TCNE) were determined. Daily protein, fat, retinol, vitamin B$_2$and vitamin B$\_$12/ intakes were significantly lower for vegetarians, however, fiber, carbohydrate, $\beta$-carotene, folic acid and vitamin C consumptions were much higher for vegetarians than omnivores. There were no differences in plasma NEC, ASAC, AIAC and TCNE concentrations between the two groups. Urinary carnitine excretion was lower in vegetarians, but only the differences in ASAC and TCNE excretions were statistically significant. These results suggest that the lower excretion of ASAC in vegetarians may be a reflection of their lipid metabolic state and that Korean vegetarian diets may accommodate lower carnitine intakes through efficient urinary conservation of carnitine.

• Journal of information and communication convergence engineering
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• v.12 no.4
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• pp.228-236
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• 2014

One of major purposes of these standard technologies is to ensure interoperability between entities from different vendors and enable interworking between various technologies. As interoperability and interworking are essential for machine-to-machine communications (M2M) and Internet of Things (IoT) for them to achieve their ultimate goal, i.e., things to be connected each other, multiple standards organizations are now working on development M2M/IoT related specifications. This paper reviews the current activities of some of the most relevant standardization bodies in the area of M2M and IoT: third-generation partnership project (3GPP) core and radio network aspects, broadband forum, and oneM2M. The major features and issues being focused upon in these standards bodies are summarized. Finally, some key common trends among the different bodies are identified: a common service layer platform, new technologies mitigating an explosive growth of network traffic, and considerations and efforts related to the development of device management technologies.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.10
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• pp.1744-1751
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• 2006

In this paper shows the Designed and Manufactured active antenna for wireless LAN that is consisted of 5.5GHz band local LNA and Microstrip Patch Antenna. LNA improved noise special quality using NEC company's NE3210S01 and Micnstrip Patch Antenna designed to have omnidirectional characteristic. Designed $1{\times}2$ Microstrip Patch Antenna to have the gain of about 8.3[dBi], the input reflection loss -32[dB], VSWR showed 1.132, and the LNA gain 15[dB], input-output reflection loss was showed the characterstic of -20[dB].

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.16 no.1 s.92
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• pp.40-48
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• 2005

In this paper, we explore the inductively coupled concept and propose a class of electrically small planar antennas. The antennas are optimized using NEC in conjunction with a Pareto GA. These antennas show good efficiency and bandwidth performance without any additional matching network. Several optimized designs are fabricated and measured. We explain the operating principle of these antennas using a simple lumped element circuit model. The proposed antennas are translated as printed lines on Duroid for RFID tag antennas.

• Journal of Communications and Networks
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• v.2 no.1
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• pp.35-45
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• 2000

this paper presents the concept of "mobile ATM', a proposal for third-generation (3G) mobile communication network infrastructure capable of supporting flexible evolution of radio technologies from today's cellular and data services towards future wireless multimedia services. Mobile ATM provides generic mobility management and QoS-based transport capabilities suitable for integration of multiple radio access technologies including cellular voice. wireless data, and future broadband wireless services. The architecture of a mobile ATM network is outlined in terms of the newly-defined "W-UNI" interface at the radio link and "M-UNI"and "M-UNI" interface which supports unified access for WATM and non-ATM mobile terminals through corresponding interworking functions (IWF) is explained. leading to an understanding of how different radio access technologies are supported by the same ATM-based core network infrastructure. Generic mechanisms for handoff and location management within the core mobile network are discussed. and related protocol extensions over the "W-UNI" and "M-UNI/NNI"interfaces are proposed. the issue of "crossover switch (COS)" selection in mobile ATM is considered, and a unified handoff signaling syntax which supports flexibility in COS selection is described. Typical signaling sequences for call connection and handoff using the proposed protocols are outlined. Experimental results form a proof-of-concept mobile ATM network prototype are presented in conclusion.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.26 no.1
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• pp.101-108
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• 1990

The processing efficiency of the special purpose hardware which is designed and implemented for the FFT caculation was investigated in this paper. This hardware equipment was consisted of LSI chips of four high speed multiplier and adde $r_stractor, and was interfaced with the 16bit microcomputer(NEC PC-9801E). The FFT processing time by this hardware equipment was improved approximately 4.8 times by the co-processor(Intel C8087-3).3).