• Transactions of the Korean Society of Mechanical Engineers A
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• v.36 no.11
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• pp.1327-1334
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• 2012

This study shows the conformance-based design results of a fourth-order dynamic actuator showing a performance variation caused by variation in the components as well as aero-induced disturbances. The actuator comprises a BLDC motor, spur gear and worm gear assembly, and canard. The actuator performance was evaluated by using time-variant angle information of the canard. Based on the response surface models, critical system variables were screened using F-tests, and then, the performance was approximated as a function of the variables because it is difficult to determine the performance of a high-order dynamic system as a function of system variables through analytical approaches. In this study, the conformance of uncertain performance to the specification was defined as a probability measure. The design variables obtained by optimizing the measure can provide actuator performance conforming to the specifications considered, even though there is a variation in both the components and the aero-induced disturbances.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.24 no.6
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• pp.169-176
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• 2010

Substation Automation System is basically operating throughout communicative services among IEC 61850 based devices. So, minimum requirement in order to install the system in the substation is to verify server and client conformance of IEDs and HMIs according to the IEC 61850 standard. Even though UCA IUG issued IEC 61850 conformance test procedures for both the server and the client, Much of the test is limited to IEDs as server and there is no client-only testing tool except KEMA server test tool sets. this study aims to develop IEC 61850 client testing system for verifying the full communication conformance of the substation automation system and this paper describes the design and implementation of the testing system.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.45 no.5
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• pp.201-208
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• 2008

An active RFID system has the advantages of a long identification distance and a good identification rate as well as overcoming the passive RFID's drawback such as the lowering of identification rate on metal materials. So, the development of an active RFID system has been gradually increasing in harbor logistics and the national defense area. On the other hand, some identification failures between products developed under the same standards have been reported, and there are difficulties in evaluating the interoperability between developed Products and standard conformance test because an accurate evaluation method and equipment has not been established at the international level. Motivated by these, this study presents a realization of the hardware and software of emulator to evaluate the standard conformance of an active RFID system, Performance of the designed system are then analyzed by means of simulations of Matlab/Simulink, and the applicability of the emulator is verified by evaluating the standard conformance of a real active RFID tag.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.14 no.4
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• pp.3-11
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• 2004

The XML has been becoming a basis of the related application and industry standards with proliferation of electronic transactions on the web, and the standardization on XML Signature, which can be applied to the digital contents including XML objects from one or more sources, is in the progress through a joint effort of W3C(World Wide Web Consortium) and IETF(Internet Engineering Task Force). Along with this trend, the development of products implementing XML Signature has been growing, and the XML Signature products are required to implement the relevant standards correctly to guarantee the interoperability among different XML Signature products. In this paper, we propose a conformance testing method for testing the XML Signature products, which includes a testing procedure and test cases. The test cases were obtained through analysis of XML Signature standards. Finally we describe the design and uses of our XML Signature conformance testing tools which implements our testing method.

• The Journal of the Korea Contents Association
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• v.10 no.6
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• pp.144-155
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• 2010

In recent years, there has been a rapid and wide spread of robot system in our lives and with the ever increasing the requirement of user for robot functionality, the software component is increasingly sophisticated and complicated. Accordingly it is inevitable to employ a standardized software platform. The OPRoS is open standard software platform based on component for robot system. When the software components were developed, it has got to validate the conformity of robot software components which comply with the OPRoS standard specification. In this paper, we deal with the design and implementation of the structural conformance test suite to verify and validate the conformance of components to be developed by user. As the results of some experiments, we could verify it from this test suite whether the components satisfied standard requirement or not.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.05a
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• pp.1681-1684
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• 2004

90 년대 후반부터 웹 기반 수업(Web-based instruction)이라 하여 인터넷을 이용한 새로운 교육방법이 시도되었다. WBI에 필요한 각종 프로그래밍을 수작업으로 진행하여야 한다는 문제점을 극복하기 위해 개발된 학습운영체제(Learning Management System)가 개발되면서 인터넷을 통한 교육은 급속히 확산되고 있다. 무선 인터넷 기술까지 수용하는 개념인 소위 e-Learning 체제로 발전되면서 e-Learning의 수요는 급속히 증가하게 되었다. e-Learning 기술 표준 개발을 실질적으로 주도하는 기관들인 IEEE, AICC, IMS가 제안하는 개별 표준안들을 ADL에서 SCORM(Sharable Content Object Reference Model)이라는 종합적인 표준안으로 수렴하게 되면서 SCORM을 기준으로 만든 다양한 컨텐츠가 개발되고있다.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2003.10a
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• pp.89-96
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• 2003

This research presents a methodology for processing design provisions by representing the provisions and also by checking the conformance of design entities with the provisions via STEP information technology, which is considered as a canonical component for implementing CALS. The provisions of standards are represented in the .form of EXPRESS schema including various entities, algorithms, global rules, and local rules, while the schema are managed on EXPRESS engine called EXPRESSO.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.12
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• pp.2691-2697
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• 2010

Shader instructions and Compiler are designed for supporting 3D graphic shader 3.0 API. Variable-length instructions are proposed to reduce the size of hardware of graphic processor in SIMD structure by shortening the length of instructions. The designed shader compiler supports variable and two phased structured instructions, and can be programmable at ESSL level. Conformance Test proposed by Khronos group is accomplished to verify the design result of instructions and complier. The test result shows overall average 37% performance improvement at the 16 functions of basic GL shader.

• Journal of Korea Multimedia Society
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• v.12 no.3
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• pp.335-344
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• 2009

Embedded systems and web browsers have started to provide two-dimensional vector graphics features, to finally support scalability of graphics outputs, while traditional graphics systems have focused on the raster and bitmap operations. Nowadays, SVG and Flash are actively used while OpenVG from Khronos group plays the role of a de facto low-level API standard to support them. In this paper, we represent the design and implementation process and the final results of an OpenVG implementation, AlexVG. From its design stage, our implementation aims at the cooperation with SVG-Tiny, another de facto standard for embedded systems. Currently, our overall system provides not only the OpenVG core features but also variety of OpenVG application programs and SVG-Tiny media file playing capabilities. For the conformance with the standard specifications, our system completely passed the whole OpenVG conformance test suites and the graphics output portions of the SVG-Tiny conformance test suites. From the performance point of view, we focused on the efficiency and effectiveness especially on the mobile phones and embedded devices with limited resources. As the result, it showed impressive benchmarks on the small-scale CPU's such as ARM's, even without neither any other libraries nor acceleration hardware.

• Journal of Platform Technology
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• v.10 no.4
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• pp.25-38
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• 2022

Recently, it is reported that the Korean Unmanned Aerial Vehicle (UAV) interface protocol (K-4586) based on STANAG-4586 is being developed to secure interoperability between UAVs. The core elements of the K-4586-based Unmanned Aircraft System (UAS) are the Core UAV Control System (CUCS), Vehicle Specific Module (VSM), Data Link Interface (DLI), and C4I systems. In UAS based on K-4586, the DLI function for transmitting and receiving messages to link UAVs is included in VSM and CUCS respectively. The Generator/Analyzer (G/A) tool is an apparatus that is developed for protocol conformance verification for VSM and CUCS, and G/A tools with DLI message transmitting and receiving should be developed separately. Core applications (VSM, CUCS, DLI) and G/A tools based on K-4586 may be developed independently depending on the developers. If the DLI message modules are different for each developer, the scope and results of protocol conformance verification will be dissimilar, and some problems may happen during system integration. In this study, common DLI message module based on the API was designed to provide the DLI message transmitting and receiving function necessary to the development of core applications and the protocol conformance verification tool of based on K-4586. When applying the proposed common DLI message module, it can be expected to shorten the UAS system development period and reduce costs, and ensure conformance of protocol. In this paper, the design and implementation method for the common DLI message module based on API was proposed and the results of functional test was described.