유니사이클 로봇에 대한 인간적 추론 제어 메카니즘

김중완,안찬우,전태옥,전언찬,정희균 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.2

Our unicycle has simple mechanical structure.But unicycle's dynamical system is a very sensitive unstable nonlinear system. equations of motion for a simple unicycle robot were derived using Lagrage's method. In this paper, a human fuzzy influence control mechanism was established throught an inquiry into human riding a unicycle, and we developed a hybrid controller to control our unicycle robot. This proposed hybrid controller is consisted with a pure PD and two fuzzy gain scheduled controllers and a direct fuzzy logic controller. Computer simulation results show that our hybrid controller has robust control performnance to unstable nnonlinear unicycle robot system.

3년내 크기 증가를 보인 위 신경초종 1예

김도현,박무인,유찬희,김규종,문원,박선자,장희경 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.2

저자들은 65세 남자 환자의 위 중부체부 대만부 전벽에 발생한 점막하 종양에 대하여 3년간 추적관찰 중 크기증가소견으로 쐐기 절재술을 시행하였으며, 조직검사 및 면역 조직 화학 검사에서 위 신경초종으로 진단한 1예를 경험하였기에 보고하는 바이다. Gastric schwannoma is a very rare gastrointestinal benign tumor, which represents only 0.2% of all gastric tumors and 4% of all benign gastric tumors. We report a case of gastric schwannoma with enlargement of size through serial endoscopic examination. Endoscopic examination showed a hard mass of 4 x 3 cm in size with normal overlying gastric mucosa on the great curvature of the mid-body of stomach. The pathological finding revealed a picture of spindle cell tumor. Immunohistochemical stain was strongly positive for S-100 protein and non-reactive for CD34, C-kit and smooth muscle actin, thus leading to the diagnosis of gastric schwannoma.

건축공사 마감자재 조달 프로세스 개선 방안

김형만,이희복,박찬식 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

In finishing stage, several works are performs at the same time as well as the most construction materials are input in construction site, thus these need to be proper and efficient procurement of finishing materials. The purpose of this scheme is to improve the procurement process of finishing materials by finding several problems in procurement process of building construction process. As a result. the study proposed procurement process suitable for domestic construction sites. Major effects of proposed procurement process are as follows: the simplification and coordination of procurement business, organization of cooperative work system with each party in procurement, the information-oriented procurement process of materials. Improvement proposal proposed in this study got a base to acquire the accuracy in procument process and concept of ]IT. These proposals can make procurement process efficient and reduce lead time od conducting procurement business and solve problems of construction delays caused by finishing works.

의약품중 잔류유기용매 시험법 확립에 관한 연구

고용석,강찬순,최보경,김혜수,홍정희,최명신,김상현,장성재,김길수 식품의약품안전청 2001 식품의약품안전청 연보 Vol.5 No.-

Headspace-GC(딘5-GC)를 이용하여 ICH 잔류웅매 가이드라인 class 1, 2에 속하는 28종의 잔류유기웅매 분석방법을 연군한 결과 SPB-5, BB-WAX column을 동시 이용하여 각각을 확인, 정량할 수 있었다.또한 염의 참가효과, 평형시간,평형온도가 headspace분석에 미치는 영향을 검토한 결과 평형 시간 30분,평형온도 85℃,Na₂SO₄Ig을 첨가하여 시험할 때 최적 부넉조건을 나타내었다. 회수율은 1,1-achloroethene(68.3%)를 제외하고 90.9 ~ 114.5%로 패체적으로 양호하였다. 따로 HS-GCJECD, DB-524 column을 이용하여 9종의 잔류유기용매에 대하여 각각의 검랸선을 작성하고 검출한계를 구하였다. 실제 의약품 원료 10종및 제제 5종에 적용시킨 결과 모두 불검출되었으며 본 시험법은 의약품중의 잔류유기용매 분석에 적용할 수 있는 방법이라고 판단된다. The headspace-fC/FID(HS -GC/FID) method was performed for test method developnlent of residu;31 organic solvents in pfrarmaceuticals. Using SPB-S and BB-WAXcolumn, 28 kinds of solvents iri ICH residual sof)·ents guidetine class 1, 2 couBd be individuallt-identified and quantitated. The foIBowing residoal soIYents were not detected by the headspaceinjection condition : N,N-Cmethylacetamide, N,N-dimeth)rlformamide, ethyfeneglycol, formamide,2-methoryethanot, N-rnethylpyrrolidone, suBforane. The effects of the addition of salts,equilibration time, and equilibration temperature on headspace analt·sis were invesugated. Theoptimum conditions weiFe obtained with addtion of Ifa2s04 19 as a salt, simultaneously. thetime and temperature of equitibration were 30min and 8i'f, respectivety. The recovery havefound between 90.9 and 114.5% except 1,1-dichloroethene(fi8.3%). Using DB-624 column &HS-GC/:ECD method, 9 kinds of residual solvents could be individually identified andfuantitated. This HS-GC method can be applied to test the residua3 organic solvent in thepharmaceuticals.

위 MALT 림프종에서 다발성 림프절 전이로 오인된 동시성 림프절 결핵 1예

김성은,김규종,김도현,송준영,문대성,장리라,유찬희,문원,박무인,박선자,김영옥 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.2

28세 남자가 내시경적 점막절제술을 통해 저등급 위MALT 림프종으로 진단되었다. 병기설정을 위해 18F-FDG PET 검사를 시행하였고 우측 쇄골상부, 우측상/하부 기관주위, AP window 부위에 강한 섭취가 관찰되어 전이성 림프절로 판단하였다. 그러나, 우측 쇄골상부 림프절에서 시행한 절제생검에서 만성육아종성염증소견이 관찰되었고 조직의 결핵 중합효소연쇄반응에서도 양성 반응을 보였다. 2개월간 항결핵제의 사용 후 시행한 추적 컴퓨터단층촬영 검사에서 림프절 크기의 감소를 보여 최종적으로 위 MALT 림프종에서 광범위 림프절 전이로 오인된 동시성 림프절 결핵으로 진단되었다. A 28-year-old man was diagnosed as gastric MALT lymphoma in diagnostic EMR (endoscopic mucosal resection). He subsequently underwent an 18F-FDG PET. 18F-FDG PET showed intense multifocal uptake in right supraclavicular, right upper and lower paratracheal, and AP window areas that was considered radiologically to represent widespread metastatic lymphadenopathy. Excisional biopsy of a supraclavicular lymph node, however, revealed chronic granulomatous lymphadenitis with a positive reaction of Tb-nested PCR. After antituberculosis treatment for 2 months, a follow-up CT scan showed complete resolution of the lesions. Intense 18F-FDG uptake could be due to an infectious process such as synchronous tuberculous lymphadenitis. Therefore, this could mimic a malignant condition such as lymphoma with extensive lymph node metastasis due to a false-positive finding, which may lead to a misdiagnosis.

자동차용 실리콘 가속도센서의 개발(Ⅱ)

이종현,신장규,이상룡,천희곤,조찬섭,심준환,류인식,박석홍,허정준,박기열 경북대학교 센서기술연구소 1994 연차보고서 Vol.1994 No.-

자동차의 air-bag 장치에 실용될 수 있는 압저항형 단결정 실리콘 가속도센서 칩을 개발하기 위하여 결정 실리콘 미세구조의 제조방법을 확립하고, 단위공정의 검증을 통하여 일괄공정에 의한 PROTO-TYPE 칩을 만드는 기술을 연구하였다. 단결정 실리콘 미세구조는 선택확산법을 이용하여 정확히 선택된 영역에만 air-gap을 형성하여 미세구조의 측면식각을 방지하는 선택확산법에 의한 실리콘 마이크로머시닝 기술로 제조하였다. 일괄공정을 위한 단위공정확립을 위하여 PROTY-TYPE 8빔 브릿지형 가속도 센서를 제조하였다. 제조된 칩의 가속도에 따른 출력전압은 선형성을 나타내고 있으며, 감도는 약 50 ㎶/V·g로 나타났다. 이 감도는 50G용 가속도센서의 사양을 만족하지 못했다. 이는 공정에 의한 문제라기 보다는 가속도센서의 시뮬레이션에 의해 설계한 구조가 이미 원하는 감도에 못 미친다는 것으로 생각된다. 따라서 2차 공정으로 제조될 가속도센서의 파라미터를 SuperSAP 유한요소 패키지를 이용하여 실리콘 미세구조부의 파라미터에 따른 특성을 시뮬레이션하였다. 설계된 50G용 가속도센서의 mass Pad의 반경 및 빔 길이, 빔 폭, 빔 두께, 그리고 mass의 각 파라미터 값은 700 ㎛, 120 ㎛, 5 ㎛, 1.0 ㎎ 이었다. 반도체 공정기술, 관성질량 제조법 및 선택확산을 이용한 마이크로머시닝을 사용하여 일괄공정으로 8빔 브린지형 가속도센서를 제조하였다. We researched the establishment of the silicon microstructure fabrication technique to develop a piezoresistive type silicon acceleration sensor chip and the technique to make a proto-type chip by the verification of the unit-process. Silicon microstructure is fabricated silicon micro-machining by selective diffusion method. This method prevent a side-etching of microstructure because selective diffused region is only formed an air-gap. We fabricated a proto-type 8-beam bridge-type acceleration sensor to establish the unit-process for the batch-process. The output voltage of the chip represented linearity with acceleration, and the sensitivity was about 50 ㎶/V·g. But this sensitivity dosen't satisfy the requirements of a practical acceleration sensor. The cause of this result is assumed not process problem, but the structure designed by simulation isn't suitable already. Threfore, the characteristics of parameters of the acceleration sensor that will be fabricated by 2nd-process is simulated by SuperSAP finite-element package. The determined parameter values of beam length, beam width, beam thickness, mass, and mass radius are 120 ㎛, 5 ㎛, 1.0 ㎎, and 700 ㎛, respectively. We fabricated 8-beam bridge-type acceleration sensor by batch-process using a semiconductor process technique, proof-mass fabrication method, and micromachinig using selective diffusion.

All-Digital Duty-Cycle Corrector With a Wide Duty Correction Range for DRAM Applications

Chan-Hui Jeong,Abdullah, Ammar,Young-Jae Min,In-Chul Hwang,Soo-Won Kim Institute of Electrical and Electronics Engineers 2016 IEEE transactions on very large scale integration Vol.24 No.1

<P>An all-digital duty-cycle corrector with a wide duty correction range and fast correction time is hereby presented. The proposed corrector uses a 1-bit digital duty-cycle detector with a time-to-digital converter, and it achieves a duty correction range between 10% and 90% with a low pressure, volume, and temperature variation. The test chip was fabricated using a 0.13-mu m CMOS process, and it occupies an area of 0.059 mm(2). The correction cycle is a 14 cycles and the duty-cycle error is below +/- 1.4%. At an operating frequency of 1 GHz, the power dissipation and peak-to-peak jitter are measured at 5.6 mW and 20.5 ps, respectively.</P>

Hexanol Production As the Main Product from Mannitol Using Engineered Clostridium sp. JS66

Hui Chan JEONG,Sung Ok HAN,Youngsoon UM 한국생물공학회 2023 한국생물공학회 학술대회 Vol.2023 No.10

Efficiency Evaluation of Semi-Continuous Leachate Recirculation Anaerobic Digestion System to Treat Source Separated Food Waste

( Chan-hui Cho ),( Byong-hi Lee ) 한국폐기물자원순환학회(구 한국폐기물학회) 2015 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2015 No.-

In this study, the experiment was carried out to produce methane by applying Semi-Continuous Leachate Recirculation Anaerobic Digestion System fed with source separated food waste from school cafeteria. There were two systems and each system consisted of a bioreactor and a leachate tank. Each bioreactor had a screen near the bottom of the reactor. 2L of Separated leachate was collected to the leachate tank each day by using a tubing pump and the leachate from the leachate tank was pumped to the bioreactor at the upper of the bioreactor. Through this circulation, the leachate having high concentration of VFAs was supplied to the bioreactor. At the beginning of the experiment, food waste/inoculum anaerobic sludge volume ratio was 2:8 that is 9g VS/L of OLR(Organic Loading Rate). Feeding was conducted every two weeks. Initial conditions of bioreactor was 30g VS/2ㆍweek and 33g VS/2ㆍweek were fed to bioreactor A and bioreactor B, respectively. Average biogas yields of the bioreactor were 0.723㎥ Biogas/kg VS added in reactor A and 0.648㎥ Biogas/kg VS added in reactor B.

Study on the Meaning of Constitutional Norms of Citizens’ rights to information

Chan Hui, Jeon 동국대학교 비교법문화연구원 2014 DONGGUK LAW REVIEW Vol.5 No.-