비젼센서를 이용한 도형 인식에 관한 연구

우성문,임윤규 대구보건대학 1999 대구보건대학 論文集 Vol.19 No.-

Generally, most of machining processes are done, according to the dimension of the draft made by CAD. However, there are many cases that a sample is given without the draft because of the simplicity of the shape in the machining of 2D objects. In order to cut the same shape as the given sample, this paper proposes the method to extract the geometric information about a large sample using the robot vision and to draw the dimensional draft for the machining. Because the resolution of one frame in the vision system is too low, it is necessary to set up a camera according to the desired resolution and to capture the image moving along the contour. And the overall outline can be compounded of the sequentially captured images. In the experiment, we compared the product after the cutting with the original sample and found that the size of two objects was coincided within the allowed error bound.

퍼지 학습법을 이용한 역진자 시스템의 위치 및 진동 제어

임윤규,우성문 대구보건대학 1998 대구보건대학 論文集 Vol.18 No.-

This paper is the fuzzy learning control for an unstable and multivariable system used in many cases. Generally, it is very difficult to design the fuzzy controller for an unstable and multivariable system. The reason is that inputs and outputs are coupled and the system is more complex as the number of variables in it increase. To solve these problems we extend Chung's method to the multivariable system and apply it, this method can design fuzzy controller more easily and adapt more actively in work condition changed and obtain the best fuzzy rules. And we apply it to the inverted pendulum. The method which extended Chung's method needs conditions for the system which make stability system in initial time in an unstable system and prove the jacobian matrix of the system the monotonic function. So we make stabilization the system in initial time using 4-dimension fuzzy rules, and we prove the jacobian matrix of the system the monotonic function as experiment. Finally, we operate learning-variables in the fuzzy learning and obtain the optimal controller for inverted pendulum.

충남지역에서 복숭아명나방(Dichocrocis punctiferalis) 발생소장

김우연,윤영남 충남대학교 농업과학연구소 2002 농업과학연구 Vol.29 No.1

The peach pyralid moth (Dichocrocis punctiferalis) is reported as important pest insect to chestnut fruits in Asia including Korea. For seasonal occurrence of D. punctiferalis in 1996, 1998 and 1999, D. punctiferalis adults were collected by light trap and sex pheromone wing trap in the chestnut orchard. Also, damaged rate of chestnut fruits were examined each collecting site. In 1996, according to examination by using light trap at three different site in Kongju, the occurrence peak of 2nd generation of D. punctiferalis adults was early August. Collected individuals after September were considered as 3rd generation. Damaged rate due to maturation type was 26.5% averagely. The order of damaged rate were early, late and middle maturation type as 35.04%, 19.35% and 26.03%, respectively. Using synthetic sex pheromone trap at Kongju, Cheungyang and Buyeo in 1998, occurrence peaks were occurred mid-August to 2nd generation and late September to 3nd generation in Kongju. However, from early-August to late-September 5 peaks were occurred sequentially in Cheungyang. Second generation adults were occurred in mid-August and 3rd ones were occurred from late-September to early-October in Buyeo. In 1999, occurrence peaks of 3rd generation were early, middle and late September in Kongju, Cheungyang and Buyeo respectively. Damaged rate were 6.8%, 6.6% and 15.3% in Kongju, Cheungyang and Buyeo, respectively. Damaged rate order due to variety were Eunki, Chukpa, Danpa, Bokpa, Wangjung, Byunggo57, Yuoma at Buyeo and were Chukpa, Dukmyung, Byunggo57 at Cheungyang in 1999. Damage rate of chestnut were different with variety. Eunki and Chukpa in Buyeo and Chukpa and Dukmyung in Cheungyang were more damaged by D. punctiferalis, respectively.

약식조리시 당의 종류와 당의 양, 조리기기에 따른 물리적 특성 연구

김연진,우순임 서울여자대학교 자연과학연구소 1997 자연과학연구논문집 Vol.9 No.-

This study makes effort to bring a nutritional but quite troublesome traditional food, yaksik, closer to the modern times by studying how different utensils(steaming pots, microwave oven, pressure cooker), types of sugars(black sugar, oligo sugar, and brown+white sugar, honey), amounts of sugar(0.75Cup, 1.00Cup, 1.25Cup) all differ in preference. And using scientific methods to evaluate the physical characteristics of yaksik, the objective is to set a standardized recipe to fit into our modern diet efficiently. Now in our experiments, with different types of sugars, amount of sugar, and cooking utensils, the results on physical characteristics of yaksik were attained by texture, water content, color measurements.

한국인 성인의 교근 두께에 관한 초음파검사적 연구

이연희,차봉근,박인우 대한치과교정학회 2001 대한치과교정학회지 Vol.31 No.2

일반적으로 골의 형태와 구조는 부착 근육의 활성과 밀접한 관련이 있다고 알려져 있으며,특히 악안면 형태와 저작근 기능과의 관계는 많은 임상 및 동물 실험을 통해 연구되어 왔다. 초음파검사는 임상적 적용이 용이하고 비용이 저렴할 뿐만 아니라 환자에 대한 유해성이 적어 의학분야의 여러 영역에서 널리 이용되고 있다. 이 연구의 목적은 교근의 두께와 악안면 골격 형태와의 상관성을 평가하는 것으로, 강릉대학교 치과대학 남학생 35명과 여학생 15명을 대상으로 하였다. 교근의 두께 측정에는 7.57MHz의 고해상도 직선 탐촉자에 의한 초음파진단장치가 사용되었고, 악안면 골격 형태의 결정은 측방 두부계측방사선사진 분석을 통해 이루어졌다. 이상의 계측치로부터 얻어진 결론은 다음과 같다. 1.남자에서 교근의 평균 두께는 안정 상태에서는 13.8±1.71mm,최대 교합 상태에서 14.8±1.77mm였으며 여자에서는 안정 상태에서 11.6±1.58mm, 최대 교합 상태에서 12.4±1.47mm로 나타났다. 2.교근의 두께는 남녀모두 안정 상태보다 최대 교합 상태에서 유의하게 증가하였다(P<0.05). 3.교근의 두께는 안정 상태와 최대 교합 상태 모두에서 남자가 여자보다 유의하게 두꺼웠다(P<0.05). 4.교근의 두께는 남자에서 안정 상태와 최대 교합 상태 모두 하악평면각과는 음의 상관 관계가 있고 하악지 고경, 전두개저 길이와는 양의 상관 관계가 있음을 알 수 있었다(P<0.05). 5.여자에서는 교근 두께와 유의한 상관 관계가 있는 두부계측방사선사진 분석 항목을 찾을 수 없었다(P<0.05), 이로써 초음파검사는 악골 근육의 기능을 평가하는 전통적인 방법에 대해 추가적인 정보를 제공해 줄 수 있을 것으로 사료된다. It is widely accepted that the shape and structure of bone are closely related to the activity of attached muscle. Numerous clinical and animal experimental studies indicated the significant effects of masticatory muscle function on maxillofacial mofhology. Recently, the development of ultrasonography has spread throughout different fields of medicine. In the clinical examinations, ultrasonography is a convenient, inexpensive technique to apply with accurate and reliable results. The aim of this study is to assess the thickness of the masseter muscle and its correlation to maxillofacial skeleton by examining 35 male and 15 female dental students at Kangnung National University. The masseter muscle thickness of the subjects were measured by ultrasonographic scanning with a 7.5MHz linear probe, and their maxillofacial morphology were investigated by lateral cephalometric radiographs. The relationship between the masseter muscle thickness and maxillofacial morphology of normal adult was statistically analyzed, and the following results were obtained. 1.The average thickness of male masseter muscle was 13.8± 1.71mm in the relaxed state and 14.8 ± 1.77mm at maximal clenching state, while that of female was 11.6±1.58mm and 12.4±1.47mm, respectively. Ethnic difference in thickness of the masseter muscle and maxillofacial skeleton was found when the results of many researchers were compared with those of this study. 2.The thickness of the masseter muscle in both sexes increased significantly at maximal clenching state than in relaxed state(P<0.05). 3.The masseter muscle thickness of male was greater than that of female both in the relaxed state and maximal clenching states(P<0.05). 4.In males, the thickness of the masseter muscle was negatively correlated with the mandibular plane angle and positively correlated wish the mandibular ramus height and antenor cranial base length(P<0.05). It may suggest that the male with thicker masseter muscle has smaller facial divergence. 5.No significant correlation was found between the masseter muscle thickness and maxillofacial morphology in females(P<0.05). Therefore, these data suggest that ultrasonography can add valuable information to the conventional examinations of masseter muscle function.

MIS 요원의 이직 영향요인에 관한 이론적 고찰

남연우,추교완 昌原大學校 産業經濟硏究所 1997 産經硏究 Vol.14 No.-

DAN 코딩 기법과 웨이브렛 소속함수를 사용한 혼돈 시계열 시스템의 퍼지모델링

이연우,유진영,주영훈 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-

In this paper, we propose a new method about wavelet-based fuzzy modeling using a DNA coding method. DNA coding techniques is known that expression of knowledge is various than Genetic Algorithm(GA) usually by made optimization technique because done base in structure of biologic DNA and optimization performance is superior. The proposed method make fuzzy system model in wavelet transform and equivalence relation after identification with coefficient of wavelet transform using a DNA coding techniques. Also, can get fuzzy model effectively of nonlinear system using advantage of strong wavelet transform about function that have sudden change. In this paper, in order to demonstrate the superiority of the proposed method compared with GA.

卷柏의 혈액암세포주에서 抗癌作用에 대한 연구

남항우,이성원,이병주,권칠용,문연자,안성훈,우원홍 한국전통의학연구소 2002 한국전통의학지 Vol.12 No.1

The Sellaginella Tarmariscina is widely used in the traditional oriental herbal medicine for its anti-inflammatory, antioxidant effects. The effects of aqueous extracts of Sellaginella Tarmariscina on the viability and induction of apoptotic cell death were investigated in HL-60 cells. The cell viability after treating with extract of Sellaginella Tarmariscina was quantified by MTT assay. The results showed that could inhibit the proliferation of HL-60 cells and caused a 40% inhibition of HL-60 cells at concentrations of 400 ㎍/ml. The cancericidic effect of Sellaginella Tarmariscina was mediated by apoptosis. Thus, HL-60 cells exposed to Sellaginella Tarmariscina displayed the DNA fragmentation ladder and nucleus chromatin condensation characteristic for apoptosis. In conclusion, our results suggest that the extract of Sellaginella Tarmariscina may induce the apoptotic death in HL-60 cells.

자궁경부암 세포에서 troglitazone에 의한 온열감수성 증강 효과

전하연,박우윤 충북대학교 의과대학 충북대학교 의학연구소 2008 忠北醫大學術誌 Vol.18 No.1

Purpose: Uterine cervix cancer is commonly treated with radiation therapy and the treatment results can be enhanced by combined with hyperthermia. Hyperthermia is more effective on the cells under the state of hypoxia and low pH. Troglitazone decreases intracellular pH and HSP(heat shock protein) 70 production and this may cause cells more sensitive to hyperthermia. Thus, we investigated the cytotoxic effect by the combination of hyperthermia and troglitazone in uterine cervix cancer cells. Materials and methods: HeLa cells were treated with troglitazone(10 μM for 72 hr) alone, hyperthermia(42℃ for 1 hr) alone, or both(hyperthermia and troglitazone treatment). The cytotoxic effect was measured using clonogenic assay. The change of Hsp 70 expression was studied by western blot. Results: Hsp 70 expression was induced from 24 hrs after hyperthermia. When the cells were preincubated with 10 μM of troglitazone for 72 hr Hsp 70 was not induced. The surviving fractions(SF) were 0.77 and 0.32, respectively for troglitazone alone and hyperthermia alone. When the cells were treated with troglitazone before hyperthermia the SF was 0.34. Conclusion: Troglitazone prevents the induction of HSP 70 by hyperthermia. However, troglitazone itself does not increase thermal sensitivity in HeLa. 연구 목적: 자궁경부암은 국소적으로 진행된 경우 방사선치료가 주된 치료법으로 사용되고 있고, 온열치료의 병용에 의해 치료 성적의 향상이 보고된 바 있다. troglitazone은 세포내 pH를 낮추고, 열충격단백질의 합성을 억제하므로 온열 감수성을 증가시킬 것으로 기대된다. 이에, 자궁암 세포주에서 troglitazone과 온열치료의 병용에 따른 치료효과의 증강을 파악하고자 하였다. 대상 및 방법: 사람 자궁암 세포주인 HeLa를 대상으로 troglitazone 단독 또는 온열치료(42℃, 1시간)의 병용에 의한 세포의 생존분획의 변화를 단일집락군형성능으로 측정하였다. western blot으로 hsp 70의 발현 변화를 분석하였다. 결과: HeLa에서 hsp 70의 발현은 온열치료 후 24시간부터 관찰되었으며, 10 μM의 troglitazone을 온열치료 전 72시간 동안 처리했을 때 hsp 70의 발현이 억제되었다. 10 μM의 troglitazone을 단독 처리 했을 경우 세포생존분획은 0.77, 온열치료 시 0.32, 10 μM의 troglitazone으로 72시간 처리 후 온열치료 병행한 경우 0.34로 방사선감수성의 변화가 관찰되지 않았다. 결론: troglitazone은 온열치료에 의한 hsp 70의 발현을 억제시키나, 온열 감수성을 증가 시키지 않는다.

MIS 요원의 이직 영향요인과 이직의향과의 관계에 관한 실증연구

추교완,남연우 昌原大學校 産業經濟硏究所 1997 産經硏究 Vol.15 No.-