• ETRI Journal
• /
• 제10권2호
• /
• pp.3-12
• /
• 1988

Several ISDN (Integrated Services Digital Network) protocols have implemented at ETRI (Electronics and Telecommunications Research Institute) in an experimental network so that functional characteristics of the protocols under test could be certified against their protocol specifications with the help of the ETRI protocol test facilities. This paper describes ETRI protocol test architecture and its application to testing the NSP (Network Service Part) protocols : MTP (Message Transfer Part) level 3 and SCCP (Signalling Connection Control Part) of the CCITT CCS (Common Channel Signalling ) system No. 7 The test architecture presented here allows tests for two different protocol classes : peer-to-peer and multipeer protocolos. Some extensions are made to the conventional test architectures, namely the test coordination, test result transfer and network state observation method.

• 한국군사과학기술학회지
• /
• 제12권2호
• /
• pp.170-174
• /
• 2009

This paper describes the wireless communication test environment for the Link-K system and shows the performance analysis of multiple access protocols. The test environment consists of data generator, modem, radio sets, attenuators, and antennas. In case of both CSMA and Roll-Call protocols, throughput performance and delay are measured. And test results are analyzed. The test results would be used for communication performance analysis and network design of Link-K system.

• 대한핵의학회지
• /
• 제39권2호
• /
• pp.82-86
• /
• 2005

In myocardial perfusion scintigraphy, the results of this evalution now confront the practitioner of nuclear medicing with methodologic options. Most nuclear cardiologic studies are performed using thallium-201, Tc-99m sestamibi and Tc-99m tetrofosmin. Some part of these studies use some form of pharmacologic stress test. While tailoring each test to the individual is ideal, this may be impractical for a busy department. Accordingly, established protocols to be used for patients with similar clinical presentations will be helpful. The following review presents methodology of various imaging protocols mainly according to the guidelines of nuclear cardiology procedures in American Society of Nuclear Cardiology.

• 한국통신학회논문지
• /
• 제15권5호
• /
• pp.434-445
• /
• 1990

OSI 모델에 입각한 기능확인 위주의 종래의 단순한 프로토콜 시험기법은 성능시험, 적합성시험, 상호접속시험으로 세분화되고 대상 프로토콜도 일대일, 일대다수(Point-to -multipoint)로 확장되었다. 본 논문에서는 시험항목 생성부분과 시험결과 분석기능을 공통 플랫폼으로 하고 시험 대상 프로토콜의 성격과 시험목적에 따라서 모듈화된 시험수행기부분을 선택적으로 변경하는 다기능 프로토콜 시험시스템을 제시하였다. 본 논문은 다기능 시험시스템 설계에 입각한 예로서 망루팅 프로토콜 시험시스템, 트랜스포트 프로토롤 시험시스템의 구조를 보인다.

• 한국정보과학회논문지:정보통신
• /
• 제28권2호
• /
• pp.277-287
• /
• 2001

통신 프로토콜의 상호운윤성을 시험하기 위한 시험경우를 생성하는 방법론이 논문[1, 2, 3]에서 제안되었고 TCP와 ATM프로토콜에 적용되었다. 이들 방법론으로 생성된 시험경우는 제어부분만을 고려하고 있다. 그러나 실제 시험에 있었서는 데이터를 고려하여야 하며 완전한 시험이 되기 위해서는 이들 변수들이 가질 수 있는 모든 값에 대한 시험을 거쳐야 하지만 이것은 현실적으로 불가능하다. 본 논문에서는 데이터를 포함하는 시험을 하기 위하여 논문[1]에서 도출한 시험경우에 제어 부분과 데이터 부분을 동시에 고려하여 TCP의 연결설정 절차에 대한 시험경우를 도출한다. 이 과정에서 시험경우의 수가 너무 커지는 것을 피하기 위해 최소의 실험횟수로 최대의 정보를 얻을 수 있도록 실험계획법을 이용한다. 실험계획법은 적합성 시험에는 적용되었지만 아직 상호운용성 시험에는 적용되지 않았다. 이 방법을 통해 데이터 부분을 포함하는 상호운용성 시험경우를 생성하고 시험의 검출력을 유지하면서 최소화된 시험경우로 상호운용성 시험을 할 수 있는 기능성을 보인다

• 자동차안전학회지
• /
• 제8권3호
• /
• pp.33-38
• /
• 2016

Recently, development in vehicle safety could increase interest in children's safety in vehicle collisions. But the research of children safety in vehicle collisions is not being conducted as many as that of adult's. Especially the study for the vehicle crash was not much. This study focused on the comparison of child safety between test protocols to evaluate children's safety in crash test. Injuries of Q6 and Q10 dummy were evaluated using FFRB (Full frontal rigid barrier) test and 40% ODB (Offset deformable barrier) test with one model vehicle. Even though the limit number of test, the tendency of injury criteria of Q6 and Q10 dummy between the test protocols was not conformed but injury criteria of Q6 and Q10 were not same between FFRB and 40% ODB.

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

• Journal of Information Processing Systems
• /
• 제10권2호
• /
• pp.300-313
• /
• 2014

Various Time Synchronization protocols for a Wireless Sensor Network (WSN) have been developed since time synchronization is important in many time-critical WSN applications. Aside from synchronization accuracy, energy constraint should also be considered seriously for time synchronization protocols in WSNs, which typically have limited power environments. This paper performs analysis of prominent WSN time synchronization protocols in terms of power consumption and test by simulation. In the analysis and simulation tests, each protocol shows different performance in terms of power consumption. This result is helpful in choosing or developing an appropriate time synchronization protocol that meets the requirements of synchronization accuracy and power consumption (or network lifetime) for a specific WSN application.

• Asian Pacific Journal of Cancer Prevention
• /
• 제16권11호
• /
• pp.4609-4614
• /
• 2015

Background: In recent decades, the prognosis for childhood leukemia has improved, especially for acute lymphoblastic leukemia (ALL). In Thailand, though, the survival rate for ALL is unimpressive. In 2006, standard national protocols for childhood leukemia treatment were implemented. We herein report the outcome of the ALL national protocols and explanations behind discrepancies in outcomes between institutions. Materials and Methods: Between March 2006 and February 2008, 486 children with ALL from 12 institutions were enrolled in the Thai national protocols. There were 3 different protocols based on specific criteria: one each for standard risk, high risk and Burkitt's ALL. We classified participating centers into 4 groups of institutions, namely: medical schools in Bangkok, provincial medical schools, hospitals in Bangkok and provincial hospitals. We also evaluated supportive care, laboratory facilities in participating centers, socioeconomics, and patient compliance. Overall and event-free survival were determined for each group using the Kaplan Meier method. Statistical differences were determined using the log-rank test. Previous outcomes of Thai childhood ALL treatment between 2003 and 2005 served as the historic control. Results: Five-year overall survival of ALL treated using the Thai national protocol was 67.2%; an improvement from the 63.7% of the 12-institute historical control (p-value=0.06). There were discrepancies in event-free survival of ALL between centers in Bangkok and up-country provinces (69.9% vs 51.2%, p-value <0.01). Socioeconomics and patient compliance were key elements in determining the outcome (65.5% vs 47.5%, 59.4% vs 42.9%) (p-value < 0.02). Conclusions: Implementation of standard national protocols for childhood leukemia in Thailand did not significantly improve the outcome of ALL. Factors leading to better outcomes included (a) improvement of treatment compliance (b) prevention of treatment abandonment and (c) financial support to the family.

• 한국도로학회논문집
• /
• 제14권5호
• /
• pp.47-55
• /
• 2012

PURPOSES: SUPERPAVE binder grade tests including Multiple Stress Creep and Recovery(MSCR) test are applied to evaluate rheological properties of four polymer modified binders. METHODS: To evaluate grade of four modified binders, PG testing protocols, such as DSR, BBR and MSCR are employed. RESULTS: It is observed that MSCR test shows different performance grades especially on modified binders. Both DMP and EG binder show similar high temperature performance to SBS 5% modified binder. CONCLUSIONS: Binder Grading system in Korea need to be reviewed to properly reflect the performnace of modified binders. The binders modified with DMP and EG can be possible alternatives SBS 5% modified binder considering its performance and cost.