• Proceedings of the Korea Information Processing Society Conference
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• 2007.11a
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• pp.332-335
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• 2007

본 연구에서는 소프트웨어의 구현 코드로부터 테스트 케이스 자동에 관해 연구하며 도구를 구현한다. 이를 통해 개발자가 직접 테스트 케이스를 작성하는 데 소요되는 비용을 절감하고, 소프트웨어의 요구사항 명세가 잘 작성되어 있지 않거나 실제 구현과 차이가 있는 경우에도 영향을 받지 않고 테스트 케이스를 생성 가능하도록 한다.

• Proceedings of the Korean Society of Medical Physics Conference
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• 2002.09a
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• pp.177-179
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• 2002

We have developed a scheduling system for heavy ion radiotherapy considering the condition of three treatment rooms and treatment planning for each patient. This system consists of a database (patient information, treatment method and machine schedule), a schedule for radiotherapy and WEB server. All operation of this system, such as data input, to change and to view the schedule, are performed by using a WEB browser. In order to protect personal information for the patients, access privilege to each information are limited by according to the occupational category. This system is connected with a hospital central information management system (AMIDAS) and an irradiation-managing computer for the heavy ion radiotherapy. A basic information for the patient is got from AMIDAS and the daily schedule sends to the treatment control computer at each treatment room through the irradiation-managing computer every morning. The daily, weekly, monthly schedules in the treatment room and the treatment condition of each patient are shared on the WEB browser with the all participants of the heavy ion therapy. This system could be useful to save a time to generate a treatment schedule and to inform us the most up-to-date treatment schedule and the related information at the same time.

• JSTS:Journal of Semiconductor Technology and Science
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• v.16 no.2
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• pp.204-209
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• 2016

The analyses on self-heating effect in 7 nm node non-rectangular Bulk FinFET device were performed using 3D device simulation with consideration to contact via and pad. From self-heating effect simulation, the position where the maximum lattice temperature occurs in Bulk FinFET device was investigated. Through the comparison of thermal resistance at each node, main heat transfer path in Bulk FinFET device can be determined. Self-heating effect with device parameter and operation temperature was also analyzed and compared. In addition, the impact of interconnects which are connected between the device on self-heating effect was investigated.

• JSTS:Journal of Semiconductor Technology and Science
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• v.16 no.2
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• pp.191-197
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• 2016

In this paper, we investigated the hotcarrier injection (HCI) mechanism, one of the most important reliability issues, in 10 nm node Input/Output (I/O) bulk FinFET. The FinFET has much intensive HCI damage in Fin-bottom region, while the HCI damage for planar device has relatively uniform behavior. The local damage behavior in the FinFET is due to the geometrical characteristics. Also, the HCI is significantly affected by doping profile, which could change the worst HCI bias condition. This work suggested comprehensive understanding of HCI mechanisms and the guideline of doping profile in 10 nm node I/O bulk FinFET.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.621-624
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• 2006

본 논문은 기존의 수화 발생 시스템이 갖는 처리 성능의 한계와 신체요소의 움직임에 대한 문제점을 지적하고, 이를 개선하기 위해 하이퍼 수화문장을 제안한다. 하이퍼 수화문장은 기존 수화문장의 구조를 확장하여 수화단어와 신체효소의 동작기호로 구성된 수화문장이다. 제안한 하이퍼 수화문장 생성 방법에 따라 하이퍼 수화어절을 연결하여 수화동작을 합성하고 수화문장에 대한 아바타의 움직임을 실제 수화자와 유사하게 생성하는 시스템을 보인다.

• Proceedings of the IEEK Conference
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• 2000.09a
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• pp.389-392
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• 2000

In this paper, we propose a novel post processing method of deconvolution for SAR images based on phase extension inverse filtering, which improves spatial resolution as well as effectively eliminates sidelobes with low computational complexity. It extends the bandwidth only to control the magnitude of the processed SAR data without distortions of the phase in frequency domain unlike the other techniques such as spatially variant apodization (SVA), and other deconvolution techniques. We compare the image processed by the proposed method with images processed by uniform weighting function, Hamming weighting function whose coefficient is 0.75, and SVA.

• Proceedings of the KIPE Conference
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• 2001.10a
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• pp.227-231
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• 2001

A new primary-side-assisted zero-voltage and zero-current switching (ZVZCS) three-level DC-DC converter with flying capacitor is proposed. The three-level converters are promising in high voltage applications, and ZVZCS is a very effective means for reducing switching losses. The proposed DC-DC converter uses only one auxiliary transformer and two diodes to obtain ZCS for the inner leg. It has a simple and robust structure, and offers soft-switching capability even in short-switching conditions. The proposed converter was verified by experiments in a 6KW prototype designed for communication applications and operating at 100kHz.

• Annual Conference on Human and Language Technology
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• 2003.10d
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• pp.261-266
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• 2003

문장이 길면 구문분석의 정확률이 크게 낮아진다. 따라서 장문을 분할하여 분석하면 구문분석의 복잡도를 크게 줄일 수 있어 정확률 향상에 크게 기여할 수 있다. 특히, 중국어는 고립어로서, 교착어나 융합어와 비교할 때 자연어처리에 도움을 줄 수 있는 굴절이나 어미정보가 없어 구문분석에 어려움이 더욱 많다. 반면, 중국어 문자에서는 쉼표를 비교적 많이 사용하고 있고 또한 쉼표의 쓰임이 정확하므로 구문 분석에 도움을 줄 수 있다. 본 논문에서는 쉼표가 많이 쓰이고 있는 중국어 문장에서 해당 쉼표위치 문장 분할가능여부를 Support Vector Machine을 이용 판단하여 정확률 88.61%의 높은 분할 성능을 보였다.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2003.09a
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• pp.296-299
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• 2003

This paper presents the implementation of an integrated messaging gateway (IMG) based on the open services gateway initiative (OSGi) specification to deliver home messages between home and some telecommunication devices. The IMG has four service agents to support a diverse communication channel. In this paper, we describe a software architecture for a seamless messaging and device layouts in the IMG. And then, we detail each components allowing users to be notified automatically through a cellular phone, a telephone, and the Internet.

• JSTS:Journal of Semiconductor Technology and Science
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• v.12 no.3
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• pp.370-376
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• 2012

In this work, design considerations for high-performance silicon photodetector are thoroughly investi- gated. Besides the critical dimensions of device, guidelines for process architecture are suggested. Abiding by those criteria for improving both direct-current (DC) and alternating-current (AC) perfor- mances, a high-speed low-operation power silicon photodetector based on p-i-n structure for optical interconnect has been designed by device simulation. An $f_{-3dB}$ of 80 GHz at an operating voltage of 1 V was obtained.