• Journal of Advanced Navigation Technology
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• v.19 no.5
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• pp.423-432
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• 2015

This paper shows that design, manufacture and the performance of FC-NIC (fibre channel network interface card) for network unit configuration which is based on one of the 5 main configuration items of the common functional module for IMA (integrated modular Avionics) architecture. Especially, FC-NIC uses zynq SoC (system on chip) for host load reductions. The host merely transmit FC destination address, source memory location and size information to the FC-NIC. After then the FC-NIC read the host memory via DMA (direct memory access). FC upper layer protocol and sequence process at local processor and programmable logic of FC-NIC zynq SoC. It enables to free from host load for external communication. The performance of FC-NIC shows average 5.47 us low end-to-end latency at 2.125 Gbps line speed. It represent that FC-NIC is one of good candidate network for IMA.

• Proceedings of the IEEK Conference
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• 2004.08c
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• pp.735-738
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• 2004

In this experiment, we developed a ubiquitous computing platform that can analyze vibration and noise in wireless environment by wireless LAN and sensors. In order to utilize the COTS(Commercial Off The Shell) concept, we used a PDA that supports wireless LAN and serial communication as a main board. Following platform is used to measure the noise level of heavy construction equipments in a remote area.

• Journal of information and communication convergence engineering
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• v.3 no.1
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• pp.9-12
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• 2005

In this research, we developed a ubiquitous computing platform that can analyze the vibration and noise in wireless environment by wireless LAN and sensors. In order to utilize the COTS(Commercial Off The Shelf) concept, we used a PDA that supports wireless LAN and serial communication as a main board. Following platform is used to measure the noise level of heavy construction equipments in a remote area.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.5
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• pp.1295-1304
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• 2016

Commercial Off The Shelf(COTS) based one-way communication is advantageous in that support a low cost communication and high speed one-way communication. This paper introduce a one-way communication method, and provides a implementation method of one-way communication through modified device driver for COTS NIC. Then, To verify the advantage of the COTS based one-way communication method, We present a sample implementation using Intel 82580 NIC, and present a possibility that can contribute to the realization of one-way communication through experiments on performance and reliability.

• Journal of Software Engineering Society
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• v.13 no.3
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• pp.71-78
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• 2000

컴포넌트 기반으로 소프트웨어를 개발해 나가는 기술에서는 컴포넌트의 특성을 파악하고 이를 적당한 곳에 적절히 구성하는 작업이 중요하다. COTS, 즉 패키지로 구입할 수 있는 대부분의 소프트웨어 컴포넌트는 블랙박스 형태로 제공된다. 따라서 COTS 컴포넌트를 블랙박스로 이해할 수 있는 모델과 효과적으로 이해할 수 있도록 프로세스 지원이 필요하다. 이 논문에서는 유지보수 단계를 전제로 한 프로그램 이해 모델을 살펴보고 컴포넌트 이해에 맞는 멘탈 모델은 어떤 것인지 살펴보았다. 대규모 컴포넌트로서 어떻게 패키징 되었는지를 나타내는 측면뿐만 아니라 컴포넌트가 어떤 서비스를 제공하는지를 나타내는 인터페이스 측면, 컴포넌트의 통합적 구성 측면이 멘탈 모델에 잘 표현되어 있어야 한다. 이런 조건을 잘 만족하는 모델로서 하드웨어 컴포넌트를 모방한 개념을 소개하였고 소프트웨어 컴포넌트에도 잘 적용될 수 있음을 보였다.

• Proceedings of the KSRS Conference
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• 2008.10a
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• pp.208-211
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• 2008

Band-limited filtering will be applied to remove interference resulted from two neighbored channels in the transmission of KOMPSAT-5 X-Band image data. In that case, receiver in ground station should prepare righteous matched filter to avoid huge BER degradation depending on the matched filter of COTS receiver. As an effort to simulate the bandlimited filtering, test filter was designed and manufactured on the basis of main specification for output filter of KOMPSAT-5 satellite. Consequently, 1.8dB of BER degradation was measured at the output of test band-pass filter, but the degradation was downsized up to 0.4dB thanks to the adaptive matched filter of COTS receiver.

• Journal of the Korea Society of Computer and Information
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• v.22 no.7
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• pp.9-16
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• 2017

In this paper, we propose a development method of portable Automatic Test Equipment based on PXIe platform. Legacy VME form factor structured test equipment has limited reuse and expansion of modules due to unapplied bus specification. In particular, these limitations can cause development periods and costs to increase, and the reliability of environmental conditions is lacking due to non-standard modules. The test equipment of the proposed PXIe platform can use diverse COTS modules to shorten the development period and minimize the instability between developments. The PXIe development module works with standard Xilinx FPGAs, PXIe Windows device drivers, and applications on standard PXIe buses. The use of standard bus and COTS modules increases scalability and reusability, enabling rapid development and excellent maintenance. Through the test, we show the proposed test equipments can be implemented efficiently between the development processes and proved their reliability through function tests and environmental tests.

• Communications of the Korean Mathematical Society
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• v.30 no.4
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• pp.349-361
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• 2015

A fence is an ordered set that the order forms a path with alternating orientation. Let F = (F;${\leq}$) be a fence and let OT(F) be the semigroup of all order-preserving self-mappings of F. We prove that OT(F) is coregular if and only if ${\mid}F{\mid}{\leq}2$. We characterize all coregular elements in OT(F) when F is finite. For any subfence S of F, we show that the set COTS(F) of all order-preserving self-mappings in OT(F) having S as their range forms a coregular subsemigroup of OT(F). Under some conditions, we show that a union of COTS(F)'s forms a coregular subsemigroup of OT(F).

• Proceedings of the Korean Nuclear Society Conference
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• 2005.10a
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• pp.1047-1048
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• 2005

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.33 no.7
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• pp.33-40
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• 2015