多層神經回路網의 檢索性能 向上技法에 관한 硏究

목금란,윤충화,윤승호 명지대학교 공학기술연구소 1991 공학기술연구소 논문집 Vol.6 No.-

The Error Backpropagation Alogorithm has great populatity for its simplicity and algorithmic stability, but its generalization property, i.e.correctness ratio, is not satisfactory. In this paper, we proposed post processing techniques which significantly enhance the correctness ratio. We have shown that, when arbitrary input patterns are given to neural networks, our proposed methods improve the probability of getting correct answers, and reduce the chances of spurious answers, over the conventional Error Backpropagation Algorithm.

달리기 시 운동화 중저의 경도가 신발굴곡각도의 크기에 미치는 영향

목승한,곽창수,권오복 한국운동역학회 2004 한국운동역학회지 Vol.14 No.2

S. H. MOK, C. S. KWAK, O. B. KWON. The Influence of Midsole Hardness of Running Shoes on Shoes Flex Angle during Running. Korean Journal of Sport Biomechanics, Vol. 14, No. 2, pp. 85-103, 2004. This study was conducted to determine what effects would the midsole hardness of running shoes have on shoe flex angle and maximum propulsive force. Furthermore, the relationship between the shoes flex angle and maximum propulsive force was elucidated in order to provide basic data for developing running shoes to improve sports performances and prevent injuries. The subjects employed in the study were 10 college students majoring in physical education who did not have lower limbs injuries for the last one year and whose running pattern was rearfoot strike pattern of normal foot. The shoes used in this study had 3different hardness, shore A 40(soft), 50(medium) and 60(hard). The subjects were asked to run at a speed of 4?.08m/sec, and their movements were videotaped with 2 S-VHS video-cameras and measured with a force platform. And the following results were obtained after analyzing and comparing the variables. 1. Although the minimum angle of shoes flex angle was estimated to appear at SFA4, it appeared at SFA2 except in those shoes with the hardness of 40. 2. The minimum angle of shoes flex angle was 145.1?with barefoot. Among the shoes with different hardness, it was the smallest when the hardness was 50 at 149.9? The time to the minimum angle was 70.7% of the total ground contact time. 3. Maximum propulsive force according to midsole hardness was the largest when the hardness was 50 at 1913.9?84.3N. There was a low correlation between maximum propulsive force and shoes flex angle.

개에 있어서 심장사상충증을 동반한 창상성 횡격막 허니아의 수술적 치료 1례

조승혁,임영환,손정민,노경완,박창식,전무형,김명철,송근호,정성목 忠南大學校 獸醫科大學 動物醫科學硏究所 2005 動物醫科學硏究誌 Vol.13 No.-

A 7-month old, castrated male Shih-tzu dog was referred to the Veterinary Medical Teaching Hospital of Chungnam National University with history of depression, dyspnea, mild scale, tachypnea, exercise intolerance and severe leanness. On physical examination, cardiac arrhythmias was heard and heart worm ELISA test was positive. Microfilaria was found on the direct blood smear. Survey radiographs showed loss of diaphragmatic line and cardiac silhouette, displacement of lung fields and presence of gas filled intestines in the thoracic cavity. Rib fracture and pelvic fracture with callus formation were found incidentally. On the basis of physical examination and radiographic findings, it was diagnosed as traumatic diaphragmatic hernia and heart worm disease. Herniorrhaphy was performed. Postoperatively, it was treated for heart worm disease and scale. There is no evidence of recurrence of diaphragmatic hernia and heart worm disease over 1 year.

Eagle씨 증후군의 치험례

오승환,이상철,윤옥병,지유진,김여갑,류동목 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.3

Eagle's syndrome is the term given to symtomatic elogation of the styloid process or mineralization of the stylohyoid or stylomandibular ligament. Since ossification of stylohyoid ligament at cadeva was fist described by De Manchetics in 1652 and Weinlecher described clinical symptom which produced by elongated styloid process and osteotomy of styloid process in 1872, Clinical symptom which include sensation of a foreign body on the pharynx, dysphagai, dysphonia, referred pain, and mouth opening disturbance was termed by Eagle as Eagle's syndrome. then, case reports of Eagle's syndrome are presented. in these cases, the patient's chief complaints included periauricular radiating pain, mouth opening disturbance, foreign body sensation, dysphagia, tenderness on the neck. Through vairous X-ray examination and palpation of tonsillar fossa, elongted styloid process were confirmed. Under the general anesthesia there were successfully removed out via transoral approach technique, described by Eagle. after resented styloid process, they were freed from the symptoms without further complication. Therefor we reported these cases treated by surgical resection of styloid process with good results.

침묵의 소용돌이(Spiral of Silence) 이론 : 비판적 검토

양승목 서강대학교 언론문화연구소 1990 언론문화연구 Vol.8 No.-

거주 형태에 따른 에너지 섭취량과 소비량의 균형도 조사

박순목,고성경,남인수,윤재만,임승현,전중기,이종삼 대구대학교 인문과학연구소 2008 人文科學硏究 Vol.31 No.-

We investigated that the effects of residential type on energy balance in college students. Total sixteen college students were participated in this study, all subjects were assigned one of three groups: either school attendee students group, self-governed living students group, dormitory students group. Routine physical activity level (for 5 days including three weekday and two weekend) and food intake were surveyed. For investigation of degree of physical activity, all subjects were requested to record on their physical movements as possible as detail should be obtained. To all subjects, five-day dietary log form was given, and used for examining of calorie intake from their routine diet. There was no statistical difference in energy intake and consumption in each. However energy consumption was significantly higher than energy uptake in school attendee students group. All other groups were shown a similar energy values between energy uptake and consumption. There were no significant differences in energy intake and consumption in any of experimental groups when comparisons were made between weekdays and weekend. As far as energy uptake was concerned it was no statistical difference in any of major nutrients among groups. In conclusion, partial imbalance was found between energy intake and uptake in school attendee groups. This may be due to their more active life style than other groups'. In future studies, better controlled study should be performed not only more subjects are recruited but also minor nutrients are included for examining of energy balance.

자동차 프런트 샤시 모듈 측정을 위한 머신 비전 시스템 개발

이동목,이광일,양승한 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.3

Today, automobile world market is highly competitive. In order to strengthen the competitiveness, quality of automobile is recognized as important and efforts are being made to improve the quality of manufactured components. The directional ability of automobile has influence on driver directly and hence it must be solved on the preferential basis. In the present research, an automated vision system has been developed to inspect the front chassis module. To interpret the inspection data obtained for front chassis module, new interpreting algorithm have been developed. Previously the control of tolerance of front chassis module was done manually. With the help of the new algorithm developed, the dimension is calculated automatically to check whether the front chassis module is within the tolerance limit or not.

자동차 프런트 샤시 모듈 측정을 위한 머신 비전 시스템 개발

이동목,이광일,양승환 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

Today, automobile world market is highly competitive. In order to strengthen the competitiveness, quality of automobile is recognized as important and efforts are being made to improve the quality of manufactured components. The directional ability of automobile has influence on driver directly and hence it must be solved on the preferential basis. In the present research, an automated vision system has been developed th inspect the front chassis module. To interpret the inspection data obtained for front chassis module, new interpreting algorithm have been developed. Previously the control of tolerance of front chassis module was done manually. With the help of the new algorithm developed, the dimension is calculated automatically to check whether the front chassis module is within the tolerance limit or not.

유리폐기물과 하수슬러지 소각재의 고형화 처리연구

한상목,신대용,윤봉구,김승겸 강원대학교 부설 석재복합신소재 제품연구센터 2002 석재연 논문집 Vol.7 No.-

하수슬러지 소각재, 폐유리분말 및 고로슬래그의 고형화에 의하여 건자재를 제조하였다. 하수슬러지 소각재는 SiO_2와 Al_2O_3가 75 wt%, Fe_2O_3가 8.21 wt%, 폐유리분말은 SiO_2 71.4 wt%, Na_2O 14.43 wt% 및 CaO 9.32 wt%, 고로슬래그는 SiO_2 33.4 wt%, CaO 41 wt% 및 Al_2O_3 14.5 wt%를 함유하여 세라믹스 제조원료로 사용이 가능하였다. 하수슬러지를 800℃에서 2시간 하소한 무기질분말을 분쇄하여 하수슬러지 소각재를 제조하였다. 30∼70 wt%의 하수슬러지 소각재, 30∼70 wt%의 폐유리분말 및 10∼30 wt%의 고로슬래그를 혼함하여 950∼1,100℃에서 2시간 소성하여 시편을 제조하였다. 하수슬러지 소각재 첨가량이 감소하고 폐유리분말의 첨가량과 소성온도가 증가하면 부피비중과 압축강도는 증가하였으나 기공률과 흡수율은 감소하였다. 1,050℃에서 소성한 시편(No. 1, 3, 5 및 7)의 부피비중은 1.70∼1.83, 기공률과 흡수율은 0.3∼2.4% 및 0.1∼1.5%, 압축강도 272∼323 kgf/㎠을 나타내었다. 고로슬래그를 첨가하여 1,100℃로 소성한 시편(No. 8, 9, 및 10)의 부피비중은 1.82∼2.11 및 압축강도는 350∼671 kgf/㎠이었다. 하수슬러지 소각재, 고로슬래그 및 시편의 중금속출량은 매립지 침출수배출 허용기준치보다 낮아, 본 연구에서 제조한 시편은 주변 환경에 해가 없어 건자재로의 이용이 가능하였다. An experimental study for the constructional material by solidification using sewage sludge ash, waste glass powder and blast furnace slag was carried out in the senses of waste materials disposal and utilization. The reusability of sewage sludge ash, waste glass powder and blast furnace slag as a raw material in the manufacturing process of ceramics was highly expected because the chemical compositions of these waste materials were mostly SiO_2 and Al_2O_3. Sewage sludge ash was fabricated by calcined at 800℃ for 2 hours and obtained by the crushing. The mixture of 30∼70wt% of sewage sludge ash, 30∼70 wt% of waste glass powder and 10∼30 wt% of blast furnace slag were heated at 950∼1,100℃ for 2 hours. The density and the compressive strength of specimen increased with increasing the sintering temperature and decreasing the addition amount of sewage sludge ash, No. 1, 3, 5 and 7 specimens showed the bulk density of 1.70∼1.83, porosity of 0.3∼2.4%, water absorption of 0.1∼1.5% and compressive strength of 272∼323kgf/㎠. And, that of the No. 7 specimen heated at 1,100℃ increased with increasing the addition amount of blast furnace slag, and for No. 8, 9 and 10 specimens, bulk density was 1.82∼2.11 and compressive strength was 350∼671 kgf/㎠. An extraction test for specimen to detect toxic materials showed below the permitted standard of land-filling extractable heavy metal contents. It was founded that the specimen were useful for the constructional materials.

한국 초파리 집단의 선택불리에 관한 지구 자기장이 소거된 자기장 영향

정승문,최오옥,박은규 圓光大學校 1996 論文集 Vol.32 No.2

본 연구에서는 한국 남해안 거제도의 자연집단의 야생형 초파리와 성연관 돌연변이형 황색체-백색안 초파리를 Helmholtz coils 장치를 사용해서 유도한 지구 자기장이 소거된 초파리집단과 비교집단인 지구 자기장내의 초파리 집단으로 사육해서 발생된 성적 선택빈도를 조사하여, 선택불리에 관한 다음과 같은 결과를 얻었다. 야생형 유전자를 운반한 염색체의 선택빈도는 20세대까지 전체 평균 빈도가 위의 2집단에서 각각 0.7212, 0.7180으로 관찰되었다. 이 결과는 지구 자기장이 소거된 집단에서 더 약한 선택분리 행동을 보여주었다. 성연관 돌연변이형 yw 유전자를 운반한 염색체의 선택빈도는 위의 각각의 조절된 자기장내의 초파리 집단에서 각각 0.0306, 0.0372로 관찰되었다. 이 결과는 자기장이 소거된 초파리 집단 보다 지구 자기장 내의 초파리 집단에서 더 약한 선택불리 행동을 보여 주었다. 초파리 집단의 전체 평균 발생율은 위의 초파리 집단에서 각각 53.40%, 40.60%로 관찰되었다. 이 결과는 지구 자기장내의 초파리 집단의 발생율이 상대적으로 낮은 수치로 조사되었다. Duncan's multiple range test와 LSD값으로 유의 차이를 검정하였던 바 야생형 그룹과 다른 3개의 돌연변이형 그룹 사이에서 고도의 유의차이가 있음이 밝혀졌다. To elucidate the genetic behavior of selective disadvantage among sex-linked mutants of Drosophila melanogaster bred and kept by the genetic study laboratory room, Wonkwang University and the wild type collected at Keojaedo island, and reared under the influence of two different strength of magnetic fields, i.e. the without magnetic field generated by Helmholtz coils and the ambient magnetic field, this study was carried out at the above indicated laboratory room. The mean selective frequencies of wild type gene-carrying chromosomes up to twentieth generation, affected by two different mafnetic fields, showed 0.7212 and 0.7180 with the magnetic field strength as mentioned other before. The data explains that Drosophila melanogaster population reared in the without magnetic field showed lower selective disadvantage. The selective frequencies of the individual of yw gene-bearing chromosomes showed 0.0306 and 0.0372 by the same order of magnetic field strength indicated above. It was shown that the fly population reared at the ambient magnetic field cleared the relatively lawer selective disadvantage. The over-all mean emergence rates of Drosophila melanogaster populations reared in controlled magnetic fields indicated above showed 53.40% and 46.60% respectively. Referring to these data, the fly population raised in the ambient magnetic field showed a relatively lower emergence rate than the without magnetic field population. Through Duncan's multiple range test and LSD value, the highly significant differences between the wild type and anyone of the other three mutants were calculated.