• 디지털콘텐츠학회 논문지
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• 제19권4호
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• pp.801-808
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• 2018

유선 네트워크를 구성하는 스위치나 라우터 또는 통합망에 대한 성능 시험방법론에 대해서는 아직 명확히 정의 되어 있지 않다. 스마트 폰과 멀티미디어 트래픽으로 인해 네트워크의 속도는 100Gbps까지 빠르게 증가하고 있다. 그러나, 정형화된 시험 방법이 없고 성능 시험 관련 부분은 아직도 옛날 자료를 기반으로 시험을 수행하고 있다. 통신사업자나 기업에서는 요구사항에 대한 시험을 자체 BMT(Benchmark Test)로 진행하고 있으며, 정부 또는 공공기관에서는 외부 기관에 성능 시험을 의뢰하고 있다. 차세대 네트워크 장비를 포함한 단위장비 및 통합망에 대한 성능 시험 수요가 증가함에 따라 성능 시험 방법에 대한 분석이 조속히 이루어져야 한다. 따라서 본 논문에서는 기관에서 수행하는 성능 시험 방법을 분석하고 모든 유선 네트워크 장비에 적용할 수 있는 가이드라인을 제시하고자 한다.

• Journal of Korea Trade
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• 제27권4호
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• pp.61-76
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• 2023

Purpose - Along with emerging international entrepreneurship, there is a need for exploring the influencing mechanism of dual network embeddedness of the host country on international entrepreneurial performance. Drawing on network embeddedness theory and organizational improvisational theory, the present study constructs a theoretical model regarding the logic relationships between the dual network embeddedness of the host country, organizational improvisational capability, and international entrepreneurial performance. Design/methodology - Using a questionnaire survey, our study conducted data in two ways. The final research sample comprised 129 international new ventures. To test the hypotheses, a three-step mediation test method was conducted. Findings - Our empirical results suggested that both host-country social network embeddedness and industrial network embeddedness significantly affected the international entrepreneurial performance. Organizational improvisational capability significantly affected the international entrepreneurial performance. Third, organizational improvisational capability partially played mediating role in the relationship between the dual network embeddedness of the host country and international entrepreneurial performance. Originality/value - This study mainly concentrates on the two important types of host-country networks, host-country social network embeddedness and industrial network embeddedness, that may help international new ventures access the strategic resources necessary to support performance. Thus, it extends the existing network embeddedness theory and improvisational theory to encompass international entrepreneurship.

• 유통과학연구
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• 제20권10호
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• pp.51-60
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• 2022

Purpose: The aim of this research is to study 1) the effects of internal factors (technological capability and entrepreneurial orientation) that affect Thailand's hotel business network capability. 2) the effects of external factors (government policy and trust relationship) that affect Thailand's hotel business network capability. 3) the impact of network capability on the firm performance. 4) the moderating effect of absorptive capacity between network capability and firm performance. Research design, data and methodology: The test model collected data from a mail survey of 164 hotel businesses in Thailand. The correlation and multiple regression were adopted to analyze and test the proposed hypotheses. Results: Interestingly, technological capability, entrepreneurship orientation, and trust relationship have a direct impact on network capability. However, network capability still does not have a significant relationship with firm performance in all dimensions. Surprisingly, the absorptive capacity does not have a moderating effect on the relationship of network capability on firm performance of hotel businesses in Thailand. Conclusions: This research found that the hotel business should focus on analyzing the external and internal environment as it affects network building, which will guide the creation of strategies for further increasing hotel distribution channels and competitive advantage.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2005년도 추계학술대회논문집
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• pp.887-890
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• 2005

The earthquake test Procedures specified in three international codes were reviewed and compared for the network equipments. As technical level on the electronics and networking is growing in Korea, many related equipments are required to export to abroad. The network equipments are now essential tools for communication among individuals as well as societies, especially at the hazard situation such as earthquake strike. The Korean network companies are trying to improve the earthquake resistance performance for their products to expand domestic and international markets. In this paper it is reviewed that most codes related on the earthquake tests can be performed with the facilities provided in Korea for the network equipments. However new facility is required to prepare for more performance and higher regulating codes expected.

• 조명전기설비학회논문지
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• 제23권10호
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• pp.75-80
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• 2009

IED가 GOOSE를 통해 전달하는 메시지가 일반적으로 변전소의 보호와 제어를 담당하는 중요하고 민감한 신호이다 보니 네트워크의 이상 상황으로 인한 통신패킷의 손실과 전송속도 저하 등에 대처하기 위한 네트워크 이중화(Redundancy)를 고려하고 있다. 이를 위해 네트워크 토폴로지의 이중화와 함께 IED도 네트워크 포트를 2개로 구현하여 스위치방식에 의한 이중화를 지원하고 있다. IEC 61850 GOOSE 적합성 시험은 IED 통신서비스 기능시험에 국한하기 때문에 본 논문에서는 변전자동화시스템의 네트워크 이중화를 고려한 IED의 스위치 이중화 장치의 GOOSE 전송 성능을 시험할 수 있는 방법을 제시하고 실계통에 적용중인 IED의 사례 검증을 통해 네트워크 이중화를 고려한 IED의 GOOSE 전송이 변전자동화시스템에 어떤 영향을 주는지 분석하고자 한다.

• 산업경영시스템학회지
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• 제16권28호
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• pp.181-186
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• 1993

The objective of this paper is to present a method for synthetic performance and quality evaluation of dial up network modem in users place. In the past, universally recognized criteria have not been available to model switched network modem performance. Reasonable assurance of modem performance on the public switched telephone network by standardized test channel which is suggested by ELA(Electronic Industries Association). These tests of modem from a variety manufacturers more reflective of actual performance on the network.

• 한국콘텐츠학회논문지
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• 제2권3호
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• pp.96-104
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• 2002

본 논문에서는 캠퍼스 내의 네트워크 사용이 원활하게 이루어지는지를 분석하기 위하여 네트워크 성능분석을 해 보았다. 캠퍼스 내부의 네트워크 백본은 기가비트 이더넷으로 구성되어 있으며, 네트워크 평균이용율이 1%이내이고 최대이용율도 10%정도이다. 또한 현재 캠퍼스내의 외부망으로의 회선 이용율은 평균 30.4%이고 최대 38.3%로 네트워크 유통량은 아직은 충분한 여유가 있다. 그러나 보안상의 문제가 있는 것으로 나타났다. 캠퍼스 전체 네트워크에 대한 방화벽을 하나 더 설치하면 교내 클라이언트들까지도 보호할 수 있어 더욱 더 안전한 캠퍼스 내부 네트워크를 구성할 수 있을 것이다.

• Journal of information and communication convergence engineering
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• 제9권4호
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• pp.396-400
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• 2011

P2P(peer to Peer) network is a distributed network architecture composed of participants that make a portion of their resources directly available to other network participants, without the need for a central server. Currently, convergence network industry using wired and mobile are grows rapidly. So P2P protocols will be used between mobile and wired network. But current P2P protocols are focused on the wired networks only and there are no simulators for performance analysis of mobile P2P. In this paper, we design a P2P simulation system for performance analysis of P2P protocols in mobile, wired and convergence networks. It is constructed by a well-known mobile network simulator and wired based P2P protocol simulator. Finally we have implemented a smart TV test-bed using our P2P test-bed for convergence networks.

• 대한전기학회논문지:시스템및제어부문D
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• 제54권6호
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• pp.403-408
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• 2005

As the increasing integrity of VLSI, the BIST(Built-In Self Test) is used as an effective method to test chips. Generally the pseudo-random test pattern generation is used for BIST. But it requires too many test patterns when there exist random This paper proposes and presents a new efficient network architecture for Reflective Memory System (RMS). A time to copy shared-data among nodes effects critically on the entire performance of the RMS. In this paper, the recent researches about the RMS are investigated and compared. The device named Topology Conversion Switch(TCS) is introduced to realize the proposed network architecture. One of the RMS based industrial control networks, Ethernet based Real-time Control Network (ERCnet), is adopted to evaluate the performance of the proposed network architecture for RMS.

• 전기학회논문지
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• 제63권5호
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• pp.713-718
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• 2014

DC urban railway power system consists of DC power network and AC power network. The DC power network supplies electric power to railway vehicles and the AC power network supplies electric power to station electric equipment. Recently, because of power consumption reduction and peak load shaving, intelligent measurement of regenerative energy and renewable energy adapted on DC urban railway is required. For this reason, DC smart metering system for DC power network shall be developed. Therefore, in this paper, DC voltage sensor, current sensor, and DC smart meter were developed and evaluated by performance test. DC voltage sensor was developed for measuring standard voltage range of DC urban railway, and DC current sensor was developed as hall effect split core type in order to install in existing system. DC smart meter possesses function of general intelligent electric power meter, such as measuring electricity and wireless communication etc. And, DC voltage sensor showed average 0.17% of measuring error for 2,000V/50mA, and current sensor showed average 0.21% of measuring error for ${\pm}2,000V/{\pm}4V$ in performance test. Also DC smart meter showed maximum 0.92% of measuring error for output of voltage sensor and current sensor. In similar environment for real DC power network, measuring error rate was under 0.5%. In conclusion, accuracy of DC smart metering system was confirmed by performance test, and more detailed performance will be verified by further real operation DC urban railway line test.