신경망에 의한 지능형 원격학습 상담 시스템의 구현

홍규완 동의공업대학 1998 論文集 Vol.24 No.1

The existing academic institutions are trying to construct a 'new education paradigm', virtual colleges the using internet and web-based technologies to provide quality education services. Many education administrators, scholars and computer scientists say that this new education paradigm is the most attractive concept to remove the time and space limitation of disadvantages of traditional colleges and produce the consumer-oriented education services. However, remote learning systems have disadvantages such as lack of learning control method and learning motivation compared to traditional class learning. In this paper, I implemented an intelligent counselling system for remote learning using a neural network that is excellent for regional division for supporting disadvantages of the remote learning system.

뉴로 컴퓨팅 시스템 시뮬레이션 언어 개발 및 응용환경의 구축

홍규완,김정수,이수동 울산대학교 1995 공학연구논문집 Vol.26 No.1

대부분의 신경망 시뮬레이션 프로그램은 기존의 언어(C,PASCAL,FORTRAN등)로 구현되었다. 기존의 언어들은 신경망구조와 신경망의 동적행위를 제어하는 데 적합한 자료구조와 문장들을 가지고 있지 않기 때문에 시뮬레이션 프로그램을 작성하거나 모델의 변경에 어려움이 많다. 본 논문에서는 신경망 시뮬레이션 프로그램을 작성하는데 적합한 언어를 설계하였다. 특히 제안된 언어는 신경망 구조를 쉽게 표현할 수 있고 신경망의 동작행위를 효율적으로 기술하기 위하여 층마크로 정의 개념을 도입하였다. 언어는 두개의 DIVISION으로 구성되었다. 하나는 망구조를 기술하기 위한 NETWORK STRUCTURE DIVISION이고 다른 하나는 신경망의 행위를 제어하는 PROCEDURE DIVISION이다. Most of neural network simulation programs have been implemented with the conventional computer languages. It is difficult to implement simulation programs and is various to build neural network, because the languages have not data structures and statements suitable for expressing neural network structures and controlling neural behaviors. This paper describes a neural network simulation language, specifically designed for the development and modeling of neural network applications. It has a layer macro definition concept to express the arbitrary network structures and dynamic neural behaviors easily. It consists of the two divisions. First division describes the network structures. Second division controls the network behaviors.

웹기반 정보처리 산업기사 자율학습 시스템의 설계 및 구현

홍규완 동의공업대학 2001 論文集 Vol.27 No.1

In this paper, I proposed the design and the implementation of a web based self learning system for information processing certificate. This system is consist of four modules: User identification module, Professor module, Student module, Learning valuation and Consulting module. The user identification module classifies a user into student, professor, and system manager. The professor module provides the function that professor inserts exercise questions into self learning system. The student module provides the function that a student learns exercise questions and views the result of self learning. This self learning system can increase the efficiency of web based self learning for information processing certificate.

CT performance phantom을 이용한 cone beam형 전산화단층영상의 특성

한충완,김규태,최용석,황의환 대한구강악안면방사선학회 2007 Imaging Science in Dentistry Vol.37 No.3

Purpose : To evaluate the characteristics of (widely used) cone beam computed tomography (CBCT) images. Materials and Methods : Images were obtained with CT performance phantoms (The American Association of Physicists in Medicine; AAPM). CT phantom as the destination by using PSR 9000N™ dental CT system (Asahi Roentgen Ind. Co., Ltd., Japan) and i-CAT CBCT (Imaging Science International Inc., USA) that have different kinds of detectors and field of view, and compared these images with the CT number for linear attenuation, contrast resolution, and spatial resolution. Results : CT number of both PSR 9000N™ dental CT system and i-CAT CBCT did not conform to the base value of CT performance phantom. The contrast of i-CAT CBCT is higher than that of PSR 9000N™ dental CT system. Both contrasts were increased according to thickness of cross section. Spatial resolution and shapes of reappearance was possible up to 0.6 mm in PSR 9000N™ dental CT system and up to 1.0 mm in i-CAT CBCT. Low contrast resolution in region of low contrast sensitivity revealed low level at PSR 9000N™ dental CT system and i-CAT CBCT. Conclusion : CBCT images revealed higher spatial resolution, however, contrast resolution in region of low contrast sensitivity was the inferiority of image characteristics.

상부 조기 위암 환자의 복강경하 상부 위절제술 3례 경험

조규석,김형철,박경규,이문수,송옥평,임철완,신웅진,주종우,유기원 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Background : The reported incidence of early gastric cancer located in the upper portion of the stomach has been increasing with the recent advances in its diagnosis and screening. Recently, we have successfully performed laparoscopic assisted proximal gastrectomy and gastric tube reconstruction without pyloroplasty on three patients with early gastric carcinoma localized to the upper third of the stomach. We describe our modification of this procedure in this report. Method : After creating an surgical pneumoperitoneum, the stomach was mobilized using laparoscopic coagulating shears. Upper half of the greater curvature and three-quarters of the lesser curvature were then dissected along with regoinal D2 lymphadenectomy. This was followed by a 5 cm, longitudinal mini-laparotomy in the upper abdomen, and the construction of the exteriorized stomach with a gastric tube measuring 20 cm long and 4 cm wide. Reconstruction with an esophagogastrostomy was performed using a circular stapler. Result : No post-operative morbidity or mortality was observed in this small series of patients. The average operative time was 250 minutes (range 220-300 minutes), and the average blood loss was 150 ml (range 90-180 ml). The mean number of lymph nodes harvested during these laparoscopic proximal gastrectomies was 24 nodes (range 22-25 lymph nodes). The average postoperative hospital stays was 7.5 days (range 7-8 days). Conclusion : Our technique of laparoscopic assisted proximal gastrectomy and gastric tube reconstruction without phloroplasty offers a minimally invasive technique with the potential of impoving the post-operative quality of life patients with an early-stage proximal gastric cancer.

도시의 재개발과 미술의 비판적 개입에 대한 연구 : 1980년대 이후 한국의 도시개발과 미술운동의 상호관계를 중심으로

최규완,박진완 영상예술학회 2009 영상예술연구 Vol.15 No.-

미술은 오랜 기간 동안 현실과 별개인 것으로 인식되어 왔으나 19세기 중반 사실주의의 등장 이후로 중요한 전환점을 맞이한다. 예술의 표현은 그 시대와 장소의 사회적 상황에서 기인하는 것으로 특히, 사실주의는 외형뿐만 아니라 시대의 내재적 의미까지 살피는 것이다. 한국의 미술계는 민중미술을 시작으로 산업화로 인한 급격한 공간의 변화에 주목하였다. 1960년대 이후의 한국은 근대화의 표상으로서 주거지의 외관을 빠르게 바꾸어나갔다. 이런 장소의 물질주의적 변화는 도시인에게 많은 혜택을 가져다주었으나 그에 대한 부작용도 필연적으로 드러나기 시작하였다. 한 장소에 뿌리내릴 필요가 없어진 인간은 장소와의 기본적인 유대를 상실했으며 반복되는 전면철거방식의 도시개발은 각종 사회문제들을 야기하고 있다. 영세가옥주와 세입자들이 장소를 잃고 점점 외곽으로 내몰리는 상황과 금전적 가치로서의 일회성 주거지 조성 등이 그것이다. 사회비판적 사실주의의 입장에 선 작가들은 이런 일관적으로 지속되는 사회의 문제점을 직시하고 이에 대한 담론을 형성하기 위해 노력하였다. 이들은 변화하는 사회분위기에 맞춰 그 표현방식과 태도를 바꾸어 왔으며 효과적인 표출에 대해 고민하고 있다. 민중미술이 막을 내리고 민주화에 대한 담론이 수그러들면서 미술계는 기존의 정치적 성향을 버리고 사적인 시각에서 주거지에 대한 담론을 꾀한다. 일부 작가들은 진정성이 내재된 향수와 경험에 기초하여 장소를 표현하며 집단을 통해 표출되는 공공미술은 도시에 적극적인 개입으로 사회와 미술의 대안적 관계를 모색한다. 이런 미술계의 노력은 아직 그 사회적 의미를 판단하기에는 시기적인 거리가 짧으나 사회현실에 개입하는 미술의 당위성이 인정되며 역할의 대안적 가능성을 기대할 수 있다. Arts had long been regarded as something separated from reality until the mid 19th century, when realism as an important turning point in art trends came into existence. Artistic expressions are attributable to social conditions in each era and place. In particular, realism is supposed to pay attention to the meanings inherent in a certain age let alone superficial forms. The art field in Korea, the people's art in particular, took notice of remarkable spatial changes resulting from industrialization. Since 1960s, the residential appearance in Korea has been transformed rapidly as a symbol of modernization. Such materialistic spatial changes have brought lots of benefits to dwellers in urban areas. Unfortunately and eventually, side effects have ensued. Humans, who do not have to settle down in one place, have lost fundamental ties with places. Urban development based on repeated overall removal has caused a range of social problems. Examples of such problems include small and petty landlords and tenants who can not help but move to suburban regions losing their places and the one time residential areas built driven by financial values. Artists in favor of social criticism and realism look squarely on and make efforts to discourse upon such consistent and continuous social issues. Further, they change their attitudes and expressions in accordance with varying social atmospheres and are concerned about effective ways of demonstration of their worries. As the discourse on democratization declined following the end of people's art, the world of art gave up the political propensity and turned to another discourse on residential areas from the perspective of privacy. Some artists express places based on nostalgia and experience with immanent truthfulness. Public arts demonstrated through groups are actively involved in urban life, seeking after alternative relations between society and art. Though it may be too early to judge the social meanings of such efforts that made by the field of art, involvement and participation of art in society and reality are justified in that such efforts could lead to possible alternative roles.

태권도 선수의 운동상해 예방을 위한 조사연구 : 전국 고등학교 태권도 선수들을 대상으로

김원규,이종희,장완성 경희대학교 체육대학 한국체육과학연구소 2003 體育學論文集 Vol.31 No.-

Taekwondo players by analyzing the primary factor of exercise injury and researching on the actual condition related to media treatment. To dot it, male and female players at 14 High Schools in Korea, who are registered in Korea, Taekwondo Association, were selected as the subjects of this study. The result of this research is as follows. 1) 73 males(52.5%) and 59 females(42.4%) appeared to have exercise injury. 2) The parts of exercise injury about male appeared to be ankle joint 87 times (11.0%), foot 80 times (10.1%), knee joint 59 times (7.4%) in the order of the frequency of occurrence and about female to be ankle joint 87 times (11.0%), foot 74 times (9.3%), knee joint 63 times (8.0%) 3) The type of exercise wound in male appeared to be bruise 154 times (19.4%), muscular pain 94 times(11.8%), and in female bruise happen 134 times(16.9%) and muscular pain 73 times(9.2%) in the order of the frequency. 4) Injury was experienced during exercise among 22 persons(15.8%) in class pin and among 19 persons (13.7%) in both class bantam and feather. 5) All pin, flight, bantam, feather and heavy weight classes showed ankle as the most frequent exercise injury region among all the injury parts during exercise. Light weight class had knee joint 25 times (3.2%) and both welter and middle classes indicated foot area as the most often wounded part. 6) In injury types happened during exercise, bruise turned out to be 298 times(31.7%), the highest level. Next, the occurrence rate of muscular pain was 20.8%(167 times). 7) It is true 165Cm to 170Cm tall persons have most exercise injuries : 39 persons (28.1%). Next, 170 Cm to 175Cm tall players with injury were 28 persons (20.1%). 8) The area injured most often during exercise was that of ankle joint as 174 times (21.9%) in 160 to 165Cm, 165 to 170 Cm 170 to 175Cm tall players and players over 185Cm Foot was most frequently hurt part as 21 times (27%) in 175Cm to 180Cm tall players. Hand & foot joint and knee joint 7 times (0.9%) in 180 to 185 Cm tall players. 9) Players under 160Cm height and 160 to 165Cm, 165 to 170Cm, 170 to 175Cm tall players and players over 185Cm, showed the highest rate of bruise as the type of injury occurred during exercise and next to it, muscular pain. 175 to 180 Cm players experienced muscular pain 33 times (4.1%), bruise 31 times(3.9%) and 180 to 185 Cm players went through with bruise 17 times(2.l%) and fracture of a bone 8 times (1.0 %). 10) When it comes to total exercise period, 54 persons(38.8%), the highest rate of male, exercise over 4 hours and as to female, 50 persons The purpose of this study is to investigate to offer the basic materials essential for protection from exercise injury of (36.0%) exercise over 4 hours. 11) The injured cause of exercise in male was their carelessness (30 persons : 22.7%), the lack of preparatory exercise and the foul of opponent players (10 persons each : 7.6% each), Instead, for women, excessive work was the cause of exercise injury in 13 persons (9.8%) and their carelessness was that of the injury in 11 persons(8.3%). 12) Male chose emergency treator as following : medical experts(19 persons : 14.4%), the person himself, a coach or an inspector (16 persons : 111%). Female chose emergency treaters following : medical expert (21 persons : 15.9%) and a coach or an inspector (16 persons : 12.1%). 13) Thorough warm-up & arrangement exercise (47 persons : 14.0%), complete recovery from tiredness, wearing protective device, being well-nourished, mental & psychological stability, reasonably held matches in numbers, and etc are shown in order as the protective way of exercise injury in males. On the other hand, in females, complete recovery from tiredness(43 persons : 12.8%), thorough warm-up & arrangement exercise, wearing protective device, mental & psychological stability, being well-nourished, reasonably held games in numbers, appear in the order of frequence.

Petri Nets 모델 개발에 의한 FMS 출력율 분석에 관한 연구

황규완,하정진 한국경영과학회 1994 韓國經營科學會誌 Vol.19 No.3

Petri Nets are a graphical and mathematical modeling and promising tool for describing and studying systems that are characterized as being concurrent, asychronous, dynamic, distributed and parrallel. The purpose of this paper is to analyze FMS Throughout-Rate by development of Petri Nets. So, it applied to FMS composed of 7 machines and 4 different job types. The result of this paper shows the advantage of using Petri Nets.

절삭공정의 성능예측에 관한 연구

황규완,김순경,전언찬 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.2

This paper focuses on the aurtomatic selection of optimal cutting condition and cycle time on multispindle metal cutting machine. The several mathematical relationships were formulated for simultaneous selection of machining parameters and tool changing scheme. In this research we two step generative approach ; step 1 is mathematical modeling for the selection of optimal cutting conditions and the other is GMDH-TYPE modeling to find prediction equation of system performance. Thus in this paper, mathematical machining models combined with a heuristic GMDH-TYPE modeling to estimate the system performance. These models are developed computer programs for practical applocation and it was shown that the proposed approach has a good potential and offeers a valuable tools to analyze the metal cutting system.

유방 절제술 후 조기 운동프로그램의 치료 효과

이규완,이충휘,조상현,박정미 한국전문물리치료학회 2001 한국전문물리치료학회지 Vol.8 No.1

The purposes of this study were to investigate the therapeutic effects of an early exercise program after mastectomy and to provide the early exercise program protocol for patients who had undergone mastectomy. The subjects were seventy women who were diagnosed with breast cancer. They were randomly assigned either to a experimental group (n=35) that received early postoperative exercise program or to a control group (n=35) that received only education by nurses. Data were obtained for each patient from goniometric measurements of shoulder flexion, abduction, external rotation, 10 elements of functional performance, and subjective pain evaluation using visual analogue scale (VAS). All variables were measured preoperatively, three days postoperatively, and one month postoperatively. Data were compared by groups using independent t-test and Mann-Whitey U test for parametric or non-parametric data, respectively. There were no significant differences between the groups for all variables preoperatively and at three days postoperatively. But there were significant differences at one month postoperatively. The experimental group showed a statisti-cally significant increases in shoulder flexion, abduction, and external rotation and in the pain VAS at one month Postoperatively (p〈,05). Also, at one month prostoperatively, the experimental group had less difficulty with three elements of functional performance-doing up a 'back' zippered article of clothing, reaching the ipsilateral scaula, and contralateral scapula with the fingers on the operated side- than the control group (p〈.05). The results of this study suggest that after mastectomy, the early exercise program conducted by a well-trained physical therapist can make a significant contribution to the return of more normal shoulder function and activities of daily living and to an increased quality of life.