Laplace 變煥을 利用한 Propped Cantilever Beam의 처짐解析에 關한 硏究

鄭海駿,尹錫天 충남대학교 공업교육연구소 1978 論文集 Vol.1 No.1

As the methods of calculating deflection of structures, various ordinary differential equations, that is, the Unit load method, the Moment area method, and Castigliano's theorm have been used. But here the anothers applied Laplace tranform to in the deflection analyses of the propped cantilever beams. The result shows the deflections calculated by Laplace transform are the same values those from ordinary solutions, and are better than the others in efficiency.

영양사 유무에 따른 재가노인 급식서비스 제공기관의 실태 분석

정현영,양일선,채인숙,이해영 대한영양사협회 2004 대한영양사협회 학술지 Vol.10 No.2

The purposes of this study was to analyze the operational difference of foodservice center for homebound elderly by the presence of the dietitian. The questionnaire was developed to measure all variables for menu management and distributed to 103 meal service centers in charge of congregate meal service program and 57 centers for home-delivered meal service program. The data of 160 centers in charge of congregate meal service and home-delivered service centers were usable for analysis. Statistical data analysis was completed using the SAS 8.1 package program for descriptive analysis and chi-square test. Only 2 1.9% meal service centers had dietitians, what is more, they were not professionals who did menu management but foodservice managers, volunteers, cook or social workers. The current foodservice programs for the homebound elderly were operated without professional. In the part of menu management, dietitians were more actively involved in menu planning in the elderly foodservice center in the presence of the dietitians. The performance level of healthcare service was not significantly different, but the nutrition education in the elderly foodservice center with the dietitians was more frequently performed than that without the dietitians(p<0.05). In the food purchasing and food production management, the significant differences were shown that in the elderly foodservice centers in the presence of the dietitians, the proportion of the contract purchasing was significantly higher than that of direct purchasing(p<0.01). In food sanitaq management, the significant differences were not shown in the part of management of keeping meal for identifying the cause of food-borne illness and left-over, but the sanitation education for the foodservice employees was performed more frequently by the presence of the dietitians(p<0.01). In conclusion, the foodservice management was more systematically conducted in the elderly foodservice centers in the presence of the dietitians than that without dietitians. The elderly foodservice program has offered the health-related support for homebound elderly. Although there were several problems in elderly foodservice management, the program delivered well-targeted, effective, and efficient nutrition services and wide range of supportive service to the at-risk older population. It needs to be managed by professional for the improvement in the elderly foodservice.

조선시대 저고리의 구성원리에 관한 고찰 : 深衣 구성과의 관련성을 중심으로 Focus on Relationship Simii and Jegory

정혜경,권영숙 한국의류학회 1988 한국의류학회지 Vol.12 No.1

The purpose of this study is to compare Jegory with Simii, and to understand the construction of Jegory, assuming that Jegory is related to Simii system. The results obtained are as follows; 1. Tgie-ku-li was the first record among the name of Jegory in literature, was called about A.D. 1408. 2. When Jegory and Simii were cut, front-back width and sleeve length standarded on the width of cloth. 3. The cutting of Jegory disposed to seperate right and left width, to connect front and back width up to the middle term of Chosen Dynasty Period. 4. The sewing order of the Simii was Dungsol-Jindong-Baerae-Sougu The sewing order of the Jegory in 「The Book of Chosen sewing」 was Shoulder-Jindong-Baerae-Sup-Dungsol-Kit and in literature of 1960's it was similar to Simii. 5. The lined clothes in 「The Book of Chosen Sewing」 was sewn to put the inside in the surface, different from the literature of 1960's. 6. In Chosen Dynasty Period the shape of Simii depended on 「Moon Kong Ka Rye」, but it was changed to similar to Jegory in the latter term. 7. The empty void in Jegory offers usefulness. It relates to Oriental negativism that yin is more useful than yang.

복수의 자율이동로봇의 협조운동에 관한 연구

정원갑,최유식,서호철,이석규,이달해 영남대학교 공업기술연구소 1999 工業技術硏究所論文集 Vol.27 No.2

This paper proposes a fuzzy algorithm for cooperative behaviors of multiple autonomous mobile robots. Each robot makes decision of his behavior based on the information obtained by ultrasonic sensors to measure the position and angles of other robots. To enhance the industrial applicability of the suggested algorithm, we add disturbances of error angle caused by wheel steering when autonomous mobile robot navigates toward next destination point. This algorithm uses the position and velocity information of both the nearest robot and other robots within the detective radius of sensor with different weighting. Based on the fuzzy rule table and fuzzy inference, we obtain the rotational angle of the robots. The effectiveness of the proposed algorithm is shown by some computer simulations where a group of mobile robots encircles with equi-interval. In addition each robots is given weighting value to avoid the wall. Finally, the suggested algorithm shows that the more robots exist, the more effective it is.

노인의 운동행위변화단계에 따른 변화과정, 의사결정평가, 자아효능감 및 주관적 건강지각

조영숙,이해정 성인간호학회 2003 성인간호학회지 Vol.15 No.2

The purpose of this study was to examine the differences of the process of change, decision making. Self-efficacy and perception of subjective health according to the stages of exercise behaviors suggested by transtheoretical medals among older adults. Method: The subjects consisted of 291 older adults. Trained research assistants interviewed the older adults using structured questionnaires. ANOVA analyses with post hoc test were used to examine the mean differences for each stage of exercise behavior using SPEE for windows. Result: The subjects were divided into five stages of exercise behavior: 24.4% pre-contemplation, 12.4% contemplation, 17.9% preparation, 12.4% action, 33.0% maintenance stage. There were significant differences in process of change, decision making, self-efficacy and exercise stage of change. ‘Self-liberation’ and ‘stimulus control’ were important strategies for intention of exercise, while ‘reinforcing management’ for the actual practice of exercise. ‘Self-liberation’ was an effective strategy to change older adults from pre-contemplation to preparation stage. Conclusion: For exercise intervention, older adults should be classified into groups according to their stages of exercise behaviors and provided effective individualized intervention depending on their stage.

Rigid Gas Permeable Contact Lens 재료물질에 관한 연구

朴惠正,朴景石,李原鎭 대구산업정보대학 1998 논문집 Vol.12 No.2

To improve the characteristic properties of contact lens materials, the copolymer of HEMA monomer NVP and MAOPTES monomer have been synthesized by the composition ratio of 50:45:5, 50:40:10 and 50:35:15. The copolymer of TMSOEMA monomer with HEMA and NVP have been synthesized as same compositional ratio as MAOPTES. Water content, swelling ratio, contact angle, permeability of oxygen and quantity of adsorptive protein were measured to check properties of copolymers. The experimental result measured for the copolymer containing silicon derivative of low ratio was prefered to be the materials of contact lens which can improve the function, due to the low absorption of protein compound to poly(HEMA) and to the high oxygen permeabilities

이동 열원을 고려한 전자빔 용접의 유한요소해석

조해용,정석영,김명한,조창용,이제훈,서정 한국레이저가공학회 2001 한국레이저가공학회지 Vol.4 No.1

Simulation on the electron beam welding of Al 2219 alloy was carried out by using commercial FEM code MARC, which encounters moving heat sources. Due to axisymmetry of geometry, a half of the cylinder was simulated. A coupled thermo-mechanical analysis was carried out and subroutine for heat flux was substituted in the program. The material properties such as specific heat, heat transfer coefficient and thermal expansion coefficient were given as a function of temperature and the latent heat associated with a given temperature range is considered. As a result, the proper beam power is 60kVX60mA and welding speed is 1~1.5 m/min. The residual stress in the heat-affected zone as well as the fusion zone does not increase. It is necessary to use jigs for preventing distortion of cylinder and improving weld quality.

형제 유·무에 따른 성격특성의 비교

박경숙,박정인,이정림,조혜정 연세대학교 생활과학대학 1985 婦學 Vol.18 No.-

The aim of this research was to make a comparative analysis of personality traits among children with more than 2 siblings, with only 1 sibling, and those without siblings. The subjects were 117 pupils in the 5th grade, selected from 4 elementary schools in Seoul. The instrument for the study was a standardized personality inventory developed by Bum Mo Chung. The data were analysed with two­way analysis of variance in which the independent variables were sex and the number of siblings. The major results were: ⑴ the personality traits of the children were influenced more by sex differences than by the number of siblings, and ⑵ the personality of the boys was found to be more active, impulsive, and dominant than that of the girls, while the personality of the girls was more reflective than that of the boys.

腹部腫瘍(72例)에 있어서의 血管撮影 및 手術所見

河海求,崔斗石,金基延 최신의학사 1973 最新醫學 Vol.16 No.7

Aortography with selective visceral injections has been recognized as highly diagnostic and easy technique for the evaluation of various abdominal mass lesions. At department of Radiology, National Medical Center, Seoul, Korea seventy-two (72) patients whose chief complaints were slowly growing abdominal mass were studied with angiography after conventional examinations (barium study, I. V. P. etc) for last several years(1965-1972). The angiographic patterns were comprehensively analized. Almost cases (about 64 cases) were retroperitoneal expanding lesions which were not well detected with conventional radiological study (barium study, I. V. P. etc). The all expanding lesions were composed of renal expanding lesions(42 cases), other retroperitoneal expanding lesions (17cases), and liver, spleen, pancreatic lesions (13 cases). The angiography with selective visceral injections was the most diagnostic and easy technique without any permament complication than any other conventional studies.

Flattening class hierarchy for reorganization of object-oriented software

황석형,양해술,박정호 한국정보처리학회 2001 정보처리논문지 Vol.8-d No.6

최근의 객체지향 소프트웨어개발에서는 설계 및 유지보수와 관련된 많은 문제점들을 해결하기 위하여 클래스를 재설계하거나 클래스계층구조를 재구성하는 등 객체지향 소프트웨어에 대한 일련의 재이용 및 재구성기법이 사용되고 있다. 본 논문에서는 클래스계층구조의 재구성에 관한 정형적인 이론을 제공함으로써 클래스계층구조의 재구성에 e관하여 보다 수월하게 이해하고 적용할 수 잇도록 하였다. 구체적으로 본 논문에서는 객체지향 소프트웨어의 개발에 있어서 주요 골격이 되는 클래스계층구조를 평탄화시킨 형태로 정의한 평탄화된 클래스계층구조를 소개하고, 임의의 클래스계층구조를 평탄화된 형태로 변형시키기 위한 알고리즘을 제안하였다. 클래스계층구조를 평탄화함으로써 클래스계층구조상의 계승 및 집약관계가 각 인스턴스들에게 어떻게 사상되는가를 수월하게 파악할 수 있으며, 주어진 클래스계층구조로부터 생성가능한 객체를 그대로 유지보존할 수 있는 평탄화된 형태의 새로운 클래스계층구조를 구축할 수 있다. 평탄화된 클래스계층구조는 클래스계층구조를 재구성하여 객체지향 소프트웨어를 점증적으로 변화 발전시키거나 재이용함에 있어서 기초를 제공하는 등 중요한 역할을 수행한다. In the object-oriented software development, redesigning of classes and reorganizing of class hierarchy structures should be necessary to reduce many of the headaches of object-oriented software design and maintenance. To support this task, in this paper, we propose a theoretical foundation for class hierarchy reorganizations that is relatively complete, correct, formal and easy to understand and use. We introduce the flattened class hierarchy that characterizes the clan, hierarchy structures in object-oriented software evolution. And we also present an algorithm which transforms a given class hierarchy into the normalized form. The flattened class hierarchy helps us map the inheritance and aggregation paths in a class hierarchy to paths in an object hierarchy that is an instance of the class hierarchy. By applying the algorithm into a given class hierarchy, we can make a new, object-preserved, and flattened class hierarchy that is the cornerstone for reorganization of class hierarchy structure and plays an important role as a bridge on the incremental evolutionary changes and reuse of object-oriented software to reorganize class hierarchies.