• Proceedings of the KIEE Conference
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• 1999.11c
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• pp.649-651
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• 1999

This paper presents SNMP remote management system for power plants using micro-controller. Control board supporting LAN-based remote monitor and control is produced and MMI program on PC is also constructed. To expand into Internet, SNMP(Simple Network Management Protocol), the standard network management protocol of TCP/IP protocol suite, is ported to this control board consisted of micro-controller, 80c196KC, and LAN controller, Am7990DC. To overcome the constraints of CPU performance and memory capacity, TCP/P protocol suite is simplified and informations needed to management were implemented in accordance with MIB(Management Information Base) specified in RFC. Also monitoring software is constructed by Visual Basic.

• Proceedings of the Korea Information Assurance Society Conference
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• 2004.05a
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• pp.51-55
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• 2004

Currently, internet is deeply rooted in everyday life and many things are performed using internet in real-world, increased internet user because convenience. But then, internet accident is on the increase rapidly. Therefore, it is necessary that testing system generate automatically various attack patterns and traffic. In this paper, we describe method of design and implementation about AGT(attack generation test suite : simulator) system which generate various attack patterns using multiple agents.

• Proceedings of the KIEE Conference
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• 2004.07d
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• pp.2583-2585
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• 2004

90년대 후반부터 웹 기반 수업(Web-based instruction)이라 하여 인터넷을 이용한 새로운 교육방법이 시도되기 시작하여 현재는 IEEE, AICC, IMS 등의 여러 e-Learning 표준안에 종합적으로 수렴하는 형태인 SCORM을 ADL에서 발표하면서 SCORM을 기준으로 다양한 컨텐츠들이 개발되고 있다. 이런 컨텐츠들은 기술적인 면에 있어서 방대한 정보들을 다루고 있지만 e-Learning 표준안인 SCORM에 따랐는지 (SCORM 표준안에 맞게 설계가 되었는지)를 확인해 볼 필요가 있기 때문에 ADL에서 SCORM conformance를 체크하기 위한 test suite를 제안하였다. 이 test suite는 사용자가 컨텐츠를 생성할 때 필요한 중요한 정보들을 구조화하여 사용자로 하여금 편리성을 느끼도록 하였지만 다른 세부적인 문제들이 표출되고 있어 본 논문에서는 이를 개선하기 위한 제안을 하고자 한다.

• Electronics and Telecommunications Trends
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• v.14 no.2 s.56
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• pp.26-37
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• 1999

ATM 프로토콜 적합성 시험 생성 도구 개발을 프로토콜 개발 통합환경과 연계하여 개발한다. 즉 생성된 I/O FSM 중간모델을 대상으로 연구된 가장 짧은 길이의 시험 스위트(test suite)를 생성하는 알고리즘을 편리하고 용이하게 적용하기 위해 데이터 구조화 및 컴퓨터 내에서의 표현 등을 위한 초기화 작업기능을 SDL Editor & Simulator를 활용하여 확인한다. 그리고 ATS(Abstract Test Suite) 생성은 UIO 시퀀스를 결정하고, TUT와 도착상태의 UIO 시퀀스를 결합한 시험 subsequence 생성과 symmetric argumentation 과정을 거처 RCP(Rural Chinese Postman) Tour 생성 알고리즘 구현을 통해 완전 시험 스위트 생성도구를 개발하고, 프로토콜 검정기와 연계하여 통합된 환경에서 사용할 수 있도록 개발한다.

• Proceedings of the IEEK Conference
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• summer
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• pp.281-284
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• 2004

In this paper, a verification method and model for a PCI-Express device are described. PCI-Express technology is one of new I/O interconnection technologies which is intended to replace conventional PCI based technology, and is introduced by PCI-SIG in 2002. For a fast prototyping, a verification suite which includes a behavioral model and stimuli is needed before actual design is finished. And also it should be simple in structure and accurate enough to verify the design. In this paper, an Early Verification Suite (EVS) which complies with PCI-Express protocol is developed and tested.

• Journal of Information Processing Systems
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• v.8 no.2
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• pp.331-346
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• 2012

Task-based programming is becoming the state-of-the-art method of choice for extracting the desired performance from multi-core chips. It expresses a program in terms of lightweight logical tasks rather than heavyweight threads. Intel Threading Building Blocks (TBB) is a task-based parallel programming paradigm for multi-core processors. The performance gain of this paradigm depends to a great extent on the efficiency of its parallel constructs. The parallel overheads incurred by parallel constructs determine the ability for creating large-scale parallel programs, especially in the case of fine-grain parallelism. This paper presents a study of TBB parallelization overheads. For this purpose, a TBB micro-benchmarks suite called TBBench has been developed. We use TBBench to evaluate the parallelization overheads of TBB on different multi-core machines and different compilers. We report in detail in this paper on the relative overheads and analyze the running results.

• Journal of the Semiconductor & Display Technology
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• v.22 no.3
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• pp.142-148
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• 2023

In this paper, we identify performance issues in executing compute kernels from PolyBench, which includes compute kernels that are the core computational units of various data-intensive workloads, such as deep learning and data-intensive applications, on Processing-in-Memory (PIM) devices. Therefore, using our in-house simulator, we measured and compared the various performance metrics of workloads based on traditional out-of-order and in-order processors with Processing-in-Memory-based systems. As a result, the PIM-based system improves performance compared to other computing models due to the short-term data reuse characteristic of computational kernels from PolyBench. However, some kernels perform poorly in PIM-based systems without a multi-layer cache hierarchy due to some kernel's long-term data reuse characteristics. Hence, our evaluation and analysis results suggest that further research should consider dynamic and workload pattern adaptive approaches to overcome performance degradation from computational kernels with long-term data reuse characteristics and hidden data locality.

• Molecules and Cells
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• v.47 no.2
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• pp.100011.1-100011.3
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• 2024

Online application for survival analysis (OASIS) and its update, OASIS 2, have been widely used for survival analysis in biological and medical sciences. Here, we provide a portable version of OASIS, an all-in-one offline suite, to facilitate secure survival analysis without uploading the data to online servers. OASIS portable provides a virtualized and isolated instance of the OASIS 2 webserver, operating on the users' personal computers, and enables user-friendly survival analysis without internet connection and security issues.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38C no.12
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• pp.1228-1236
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• 2013

In this paper, we present a development framework for acquiring intelligent but complex cyber-physical weapon systems based on modeling and simulation development tools for cyber-physical systems, EcoSUITE. We introduce EcoPOD that models weapon systems and EcoSIM that provides constructive simulation environment for interoperating the weapon model to be developed with other weapon models. To develop cyber-physical weapon system based on LVC interoperation, an interoperation architecture and an interface technique for a live and a virtual system that is compliant with the interoperation architecture. By expanding EcoSuite, we provide LVC-based development framework for interoperating a real system, a human-interactive interface system, and simulation models and validate it with a case study.

• The KIPS Transactions:PartC
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• v.15C no.5
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• pp.375-382
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• 2008

As the use of Internet and information communication technology is being generalized, the SSL protocol is essential in Internet because the important data should be transferred securely. While the SSL protocol is designed to defend from active attack such as message forgery and message alteration, the cipher suite setting can be easily modified. If the attacker draw on a malfunction of the client system and modify the cipher suite setting to the symmetric key algorithm which has short key length, he should eavesdrop and cryptanalysis the encrypt data. In this paper, we examine the domestic web site whether they generate the security session in the symmetric key algorithm which has short key length and propose the solution of the cipher suite setting problem.