• 대한치주과학회:학술대회논문집
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• 대한치주과학회 2005년도 제45회 종합학술대회 연제초록
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• pp.176-177
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• 2005

• 대한치주과학회:학술대회논문집
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• 대한치주과학회 2007년도 제47회 종합학술대회 연제초록
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• pp.111-111
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• 2007

• 대한치주과학회:학술대회논문집
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• 대한치주과학회 2007년도 제47회 종합학술대회 연제초록
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• pp.144-145
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• 2007

• 대한치주과학회:학술대회논문집
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• 대한치주과학회 2007년도 제47회 종합학술대회 연제초록
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• pp.112-112
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• 2007

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.132.2-132
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• 2001

In this paper, we propose an efficient configuration of a system for the remote control of a mobile robot. The interface has a video feedback and runs in standard web environments. For control servers of mobile robot and CCD camera, we use the environment with embedded web server Specific program has been developed in order to grab the images using Microsoft Visual C++ The external camera sends the video signal to a framegrabber in the PC, then this program grabs the images and puts them in shared memory in BMP format. For a video feedback, we use image feedback based on the client pull technique supported by Netscape and Internet Explorer.

• Journal of Periodontal and Implant Science
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• 제46권5호
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• pp.360-360
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• 2016

• 한국수정란이식학회:학술대회논문집
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• 한국수정란이식학회 2006년도 The 6th Intermational Symposium on Developmental Biotechnology
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• pp.86-87
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• 2006

• 대한치과기공학회지
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• 제35권4호
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• pp.281-286
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• 2013

Purpose: Surface modification is important techniques in modern dental and orthopedic implants. This study was performed to try embedding of bioactive materials in porous Ti implants. Methods: Porous Ti implant samples were fabricated by sintering of spherical Ti powders in a high vacuum furnace. It's diameter and height were 4mm and 20mm. Embedding process was used to suction and vacuum chamber. Loading properties of porous Ti implants were evaluated by scanning electron microscope(SEM), confocal laser scanning microscope(CLSM), and UV-Vis-NIR spectrophotometer. Results: Internal pore structure was formed fully open pore. Average pore size and porosity were $10.253{\mu}m$ and 17.506%. Conclusion: Porous Ti implant was fabricated successfully by sintering method. Particles are necking strongly each other and others portions were vacancy. This porous structure can be embedded to bioactive materials. Therefore bioactive materials will be able to embedding to porous Ti implants. Bioactive materials embedding in the porous Ti implant will induced new bone faster.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2000년도 추계정기학술대회:지능형기술과 CRM
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• pp.267-275
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• 2000

최근 전자상거래가 활성화되면서, 거래 인증서와 같은 온라인 증명서가 광범위하게 사용되고 있다. 그리고 증명서의 위/변조기술이 발전함에 따라서 온라인 거래에 사용되는 증명서의 인증과 위조/변조를 방지하는 기술이 필요하게 되었다. 본 연구는 증명서의 인증에 필요한 기술로서, 메시지 인증함수가 가지는 성질을 포함하고 있다. 본 연구에서 개발한 알고리즘은 증명서에 포함된 텍스트문서가 위조/변조되었을 경우 그 변동 상황을 알아내며, 부정적으로 위조/변조된 부분을 검출하며, 변동상황 검출과 함께 원 증명서의 문서를 복원할 수 있는 기술이다. 만일 이 증명서에 대하여 변동이 진행된 흔적이 발견될 경우, 증명서를 인증하지 않으며, 삽입한 텍스트 데이터를 추출하고 변동을 확인하는 것과 함께 필요한 정보를 복원한다. 본 논문의 시험결과에 근거하면 256$\times$256BMP file Format 이미지에 3만2천자 정도의 텍스트문서를 삽입할 수 있었다.

• 한국농공학회논문집
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• 제62권2호
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• pp.17-29
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• 2020

The objective of this study was to find an optimum methane yield condition in anaerobic digestion of sewage sludge with microwave pretreatment. The pretreatment process was carried out using a lab scale industrial microwave unit (2,450 MHz frequency). The digestion efficiency of pretreated sludge was evaluated by biochemical methane potential (BMP) test. Box-Behnken design and Response Surface Analysis (RSA) were applied to determine the optimal combination of sludge mixing ratio (0 to 100%), power (400 to 1600 W), holding time (0 to 10 min) and pretreatment temperature (60 to 100℃). BMP test results showed that Volatile Solid (VS) removal efficiency was up to 48% at a condition of 0% for mixing ratio, 1600 W for power, 5 min for holding time, and 80℃ for pretreatment temperature. Methane production was up to 832.3 mL/g VS_removed at a condition of 50% for mixing ratio, 1000 W for power, 5 min for holding time, and 80℃ for pretreatment temperature. The results of the variance analysis (ANOVA) showed that the p-value of the power and pretreatment temperature among the independent variables were significant (p<0.05), and in particular, the pretreatment temperature significantly affected on the solubilization and methane production. The optimum condition for the maximum methane yield (847 mL/g VS_removed) was consist of 38.4% of mixing ratio, 909.1 W of power, 4.1 min of holding time, and 80℃ of temperature within the design boundaries.