• Proceedings of the KSME Conference
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• 2005.11a
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• pp.17.2-17.2
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• 2005

• Journal of the Korean Chemical Society
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• v.40 no.4
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• pp.283-286
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• 1996

• Proceedings of the KSMRM Conference
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• 1997.10a
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• pp.36-36
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• 1997

• Proceedings of the KSMRM Conference
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• 1997.10a
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• pp.48-48
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• 1997

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1993.10a
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• pp.125-130
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• 1993

본 연구에서는 소음의 주기성분에 해당하는 전기적 참조신호인 주기적 펄스 신호(pulse train)를 사용하는 실시간 제어용 어셈블리 프로그램을 작성하고, Synchronous Sampling Method를 사용하여 능동소음제어를 실시, 이것에 대 한 장단점 및 한계를 고찰하는데 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.04a
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• pp.346-348
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• 2000

본 논문에서는 웹 기반의 전자 결재 시스템을 설계, 구현하는 방법을 제시한다. 기존 인트라넷을 기반으로 한 전자적 자원관리(ERP) 시스템보다 공간적인 제약을 덜 받는 웹을 기반으로 한 전자적 자원 관리 시스템의 일부분인 전자 결재 부분을 구현하여 기업내의 업무 효율 증대를 목적으로 하였다. 본 논문에 구현한 전자 결재 시스템은 현재 웹 기반 전자적 자원관리의 한 모듈로서 서비스 되어지고 있다.

• Composites Research
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• v.20 no.3
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• pp.63-66
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• 2007

Structural analysis of automotive engine cover under vibration excitation is performed by finite element analysis (FEA) in order to identify the critical area of the structure. Assembly load due to the tightening of the bolts as well as the vibration excitation were considered to describe the actual loading condition. Natural frequencies of the system were extracted considering the damping effect of the structure. Dynamic analysis was performed based on the extracted natural frequency of the system. Experimental modal analysis (EMA) and measurement of strains were performed to verify the results of the analysis. Analysis results correlated closely with the experimental results. Analysis and experiments showed that contribution of the assembly load should not be ignored to predict the structural failure of the engine cover.

• Journal of Korean Neurosurgical Society
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• v.39 no.1
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• pp.32-35
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• 2006

Objective : Hemangiopericytoma is known as a malignant tumor originating from pericytes and rarely occurs in the central nervous system. We present 6 cases of pathologically confirmed meningeal hemangiopericytoma. Methods : Retrospective study was done based on patient's recordings including radiological studies. Each case of tumors was treated surgically and postoperative radiotherapy was done. Results : There were 5 cases of intracranial and 1 case of spinal hemangiopericytomas. Three of 5 intracranial hemangiopericytomas were located at tentorial region. Total tumor removal was done in 4 cases and postoperative local recurrence (or regrowth) was noted in 3 cases despite of postoperative external radiation therapy, 2 of which had died. Conclusion : Our cases show more frequent tentorial locations and poor clinical outcomes of hemangiopericytomas compared with meningiomas.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.10 no.6
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• pp.21-28
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• 2001

Analysis of squeal noise generated during brake operation is an important task for the improvement of brake noise prob-lem. By the use of measuring instrument and techniques, test and evaluation process are to be developed systematically in quantitative analysis. The cost far test and evaluation 7an be reduced, and the technical power can be raised by the devel- oped system.

• 한국정보통신설비학회:학술대회논문집
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• 2005.08a
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• pp.323-328
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• 2005

이 논문에서는 Linux 기반의 서버/클라이언트 구조에서 H.264 Content에 대한 IPMP 시스템을 구현하고자 한다. DRM(Digital RIghts Management)솔루션을 제공해주는 IPMP(Intellecutual Property Management and Protection)를 관련 참조 소프트웨어들의 변경 통합과정을 거쳐 H.264에 대한 IPMP 시스템을 구현했다.