• Journal of the Korean Society of Radiology
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• v.9 no.6
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• pp.331-335
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• 2015

Consideration of Glenohumeral joint's image with the Changed Body angle of the Glenohumeral joint's Oblique Position in Erect Position. Glenohumeral joint's of Grashey method is a shoulder oblique method available to view the shoulder joint. Grashey method projects AP view of the Glenohumeral joint's so that the Humerus head's subluxation or joint degeneration can be easily visualized. However in this view, the patients, erect position, have to keep their body obliquely. Oblique position is will be needed to get the good quality Glenohumeral joint's view. Therefore, we thought of examining a method which shows the Glenohumeral joint's well by angling the patient one side upward in erect position. For this study, total 20 subject with no history of neurological or psychiatric illness, were recruited for examinations. They consisted of 13 mails and 7 femails, Statistic group analysis was performed with ANOVA test. Score of the evaluation of the expects were $30^{\circ}$ at $0.40{\pm}0.499$, $35^{\circ}$ at $1.34{\pm}0.657$, $40^{\circ}$ at $1.84{\pm}0.573$, $45^{\circ}$ at $0.76{\pm}0.649$, and they were significant(P<0.05). The degree of $40^{\circ}$ views were shown to yield good quality shoulder oblique images.

• Journal of Institute of Control, Robotics and Systems
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• v.18 no.7
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• pp.680-687
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• 2012

One of the frequent problems in the stabilized gimbal system is the rejection of disturbances associated with moving components. Very often such disturbances have non-linear characteristics. In a typical gimbal system, each gimbal and platform are connected by a mutual bearing which induces inevitable friction. Particularly, the non-linear Coulomb friction causes position errors as well as slow responses that lead to unfavorable performance. In this paper, a modified PID controller that is augmented by Coulomb friction estimator is presented. Through constantly estimating the Coulomb friction torque, it is applied to the output of the existing PID controller. The effectiveness of the proposed controller is evaluated through a series of experiments.

• Journal of the Korean Society for information Management
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• v.3 no.1
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• pp.50-69
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• 1986

Making the efficient Information Supply System has been the essential Research area for developing the Nation's Industry and Culture. With the Information Policy and its System Situation in Europe, America, and Japan, the Present position of Libraries and Information Centers in Korea is Compared and analyzed for the well organized Information System Structure. The result, Coordination Committee between Libraries, Integrated Information Center disseminated various subject and type of Data, and the Support of DNS being possessed by DACOM are required.

• Journal of the Korean Institute of Rural Architecture
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• v.5 no.1
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• pp.22-31
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• 2003

The project to improve the structure of village has been conducted in order to improve the residential environment since 1960's. Also, with the rural exodus and the aged population in a rural area during the rapid change of social structure in our country, the old people's problem in a rural area became a problem beyond the welfare of the old age. Moreover, as the role of old people who established their position as the subject of social & economic activities in a rural area gradually increases, an attention to problems related on old people also increases. Especially, the leisure life of old people can be an important factor on the type of leisure life of old people in a cultural village and the demands for facilities for old people by studying the present situation of facilities for old people and the actual situation of their use in a welfare center.

• The Journal of the Korean dental association
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• v.50 no.1
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• pp.13-21
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• 2012

In an edentulous situation, the dentist must make several determinations when constructing artificial teeth. These include vertical and horizontal relationships of mandible with respect to the maxilla, occlusal form and position, vertical dimension, occlusal relationships during both centric closure and eccentric excursive movements. Artificial teeth are attached to a movable base resting on movable and displaceable living tissue subject to damage. They act as a unit; therefore, they must be arranged to function as a unit. Bilateral balanced occlusion is that stability of the denture is attained when bilateral contacts ex ist throughout all dynamic and static states of the denture during function. Lateral excursion in a balanced scheme implies simultaneous working side and nonworking side contact, while occlusal contacts are maintained on both anterior and posterior teeth as the mandible moves anteriorly into protrusion.

• 제어로봇시스템학회:학술대회논문집
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• 1996.10a
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• pp.385-388
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• 1996

A time delay controller with state feedback is proposed for azimuth motion control of the frictionless positioning device which is subject to the variations of inertia in the presence of measurement noise. The time delay controller, which is combined with a low-pass filter to attenuate the effect of measurement noise, ensures the asymptotic stability of the closed loop system. It is found that the low-pass filter tends to increase the robustness in the design of time delay controller as well as the gain and phase margins of the closed loop system. Numerical and experimental results support that the proposed controller guarantees a good tracking performance irrespective of the variation of inertia and the presence of measurement noise.

• Journal of the Korean Dietetic Association
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• v.8 no.2
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• pp.143-153
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• 2002

The purpose of this study was to verify the dietitian’s job description(2000) for dietitians working at schools. The survey was carried out for the frequency, criticality and difficulty of each job description with 4 point scales. The number of subject was 125 dietitians, who have been working over 3 years at their position. The results are following ; 1. Duties with high frequency and criticality were menu managements, purchasing, storage and inventory controls, food productions, meal services, managing equipments and facility, waste managements, sanitation managements and self promotions. 2. Duties with middle frequency and high criticality were human resources managements and financial managements. 3. Duties with low frequency and high criticality were nutrition assessment (life cycles, certain diseases, specific condition), medical nutritional theraphy, nutrition education and public health nutrition. 4. For difficulty, duties related food service had lower points than that of nutrition service.

• Journal of the Korean Dietetic Association
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• v.8 no.2
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• pp.121-131
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• 2002

The purpose of this study was to verify the dietitian’s job description(2000) for dietitians working at business and industry foodservice. The survey was carried out for the frequency, criticality and difficulty of each job description with 4 point. The number of subject was 39 dietitians, who have been working over 3 years at their position. The results are following ; 1. Duties with high frequency and criticality were menu managements, purchasing, storage and inventory controls, food productions, meal services, waste managements and sanitation managements. 2. Duties with middle frequency and high criticality were managing equipments and facility, human resources managements, financial managements, self promotions. 3. Duties with low frequency and high criticality were nutrition assessment (life cycles, certain diseases, specific conditions), medical nutritional theraphy, nutrition education and public health nutrition. 4. For difficulty, duties related food service had lower points than that of nutrition service.

• Journal of the Korean Dietetic Association
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• v.8 no.2
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• pp.132-142
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• 2002

The purpose of this study was to verify the dietitian’s job description(2000) for dietitians working at hospitals. The survey was carried out for the frequency, criticality and difficulty of each job description with 4 point scales. The subject was 62 dietitians, who have been working over 3 years at their position. The results are following ; 1. Duties with high frequency and criticality were menu managements, food productions, meal services and self promotions. 2. Duties with middle frequency and high criticality in food service area were purchasing, storage and inventory controls, waste managements, sanitation managements, managing equipments and facility, human resources managements and financial managements. 3. Duties with middle frequency and high criticality in nutrition service area were nutrition assessment (life cycles, certain diseases, specific condition), medical nutritional theraphy and nutrition education. 4. For difficulty, duties related nutrition service had higher points than that of food service.

• Biomaterials and Biomechanics in Bioengineering
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• v.2 no.4
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• pp.197-206
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• 2015

This paper presents three-dimensional finite element method analyses of the distribution of equivalents stress of Von Mises. Induced around a cavity located in the bone cement polymethylmethacrylate (PMMA). The presences and effect of its position in the cement was demonstrated, thus on the stress level and distribution. The porosity interaction depending on their positions, and their orientations on the interdistances their mechanical behaviour of bone cement effects were analysed. The obtained results show that micro-porosity located in the proximal and distal zone of the prosthesis is subject to higher stress field. We show that the breaking strain of the cement is largely taken when the cement, containing the porosities very close adjacent to each other.