• Journal of muscle and joint health
• /
• v.22 no.3
• /
• pp.219-227
• /
• 2015

Purpose: The purpose of this study was to investigate the degree of dietary compliance, nutritional status, and stages of disease in patients with liver cirrhosis and to identify the relationships among those variables. Methods: This study used a cross-sectional design and conducted a survey of 100 patients who were treated at D-university hospital in Busan. For data analysis, descriptive statistics and Pearson's correlation coefficients were performed using SPSS/WINdow 20.0 program. Results: The mean score of dietary compliance was 3.50 in the a 5-point scale. Stage of disease was significantly correlated with dietary compliance (r=.20, p=.048), and protein as one of nutritional status (r=-.44, p<.001). Conclusion: These findings suggest that dietary compliance of patients with liver cirrhosis can have an influence on prognosis of disease. Therefore, patients should be encouraged to improve dietary compliance from the early stage of liver cirrhosis.

• Journal of Computing Science and Engineering
• /
• v.4 no.3
• /
• pp.207-224
• /
• 2010

This paper presents a compression scheme for mesh geometry, which is suitable for mobile graphics. The main focus is to enable real-time decoding of compressed vertex positions while providing reasonable compression ratios. Our scheme is based on local quantization of vertex positions with mesh partitioning. To prevent visual seams along the partitioning boundaries, we constrain the locally quantized cells of all mesh partitions to have the same size and aligned local axes. We propose a mesh partitioning algorithm to minimize the size of locally quantized cells, which relates to the distortion of a restored mesh. Vertex coordinates are stored in main memory and transmitted to graphics hardware for rendering in the quantized form, saving memory space and system bus bandwidth. Decoding operation is combined with model geometry transformation, and the only overhead to restore vertex positions is one matrix multiplication for each mesh partition. In our experiments, a 32-bit floating point vertex coordinate is quantized into an 8-bit integer, which is the smallest data size supported in a mobile graphics library. With this setting, the distortions of the restored meshes are comparable to 11-bit global quantization of vertex coordinates. We also apply the proposed approach to compression of vertex attributes, such as vertex normals and texture coordinates, and show that gains similar to vertex geometry can be obtained through local quantization with mesh partitioning.

• KIEAE Journal
• /
• v.7 no.1
• /
• pp.23-31
• /
• 2007

This study aims to evaluate the illuminance performance of sloped light guide with automated venetian blind systems. For the purpose, a mock-up model was constructed as a prototype of Korean office building with $12.0m{\times}7.3m{\times}3.7m$ ($w{\times}d{\times}h$) and south facing side-window mounted between the clerestory window($2.0m^2$) and the view window($5.6m^2$). The light guide of 1.28m deepth and $29^{\circ}$ tilted angle, is covered with 0.6mm galvanized steel sheet and 97% reflective film. To protect the room from low solar angle, a blind systems, 0.15m deepth and $30^{\circ}$ automated slat angle was installed. To assess illuminance performance, the totally 37 measuring points for illuminance were monitored. For the detailed analysis, photometric sensors were installed at work-plane (8 points), wall (7 points), ceiling (3points), and exterior horizontal illuminance (1 point) respectively. The performance was measured under clear sky and is monitored by Agilent data logger, photometric sensor Li-cor and the Radiant Imaging ProMetric 1400. Comparisons of light factor and uniformity are discussed.

• Perspectives in Nursing Science
• /
• v.12 no.1
• /
• pp.42-49
• /
• 2015

Purpose: The purpose of this study was to investigate nursing students' awareness of career decision-making self-efficacy, career search behavior and commitment to career choice. Methods: Data were collected using a self-report questionnaire from 397 nursing students in D city from October 1 to October 8, 2014. Results: The average score of career decision-making self-efficacy, career search behavior and commitment to career choice was 3.42, 3.08 and 3.27 on a Likert 5 point-scale respectively. Career decision-making self-efficacy and career search behavior were significantly different according to grade of subject. There were positive correlations between career decision-making self-efficacy, career search behavior and commitment to career choice. Conclusion: It is necessary to develop an effective career support program from 1st grade to improve nursing student's career decision-making self-efficacy, career search behavior and commitment to career choice.

• Korean Journal of Applied Biomechanics
• /
• v.17 no.1
• /
• pp.69-79
• /
• 2007

The purpose of this study was to examine the characteristics of throwing motion in the elementary school students from the developmental point of view. For the purpose of this, total of nine subjects(each of three students in five, third, and first grades) were participated. They were asked to throw the ball as far as they can and the motions were videotaped with the 30frames/sec and 1/500 shutter speed. The successful motions for each subject were selected for three dimensional analysis. The collected data were analyzed using DV express 1.0 and Kwon3D 3.0 softwares. The results obtained from this study were as follows; 1. Total time for the throwing motion of the first grade was longer than that of the fifth and third grades. 2. The resultant displacement and velocity of COM for the fifth and third grades were greater than that of the frist grade. 3. The first grade tended to flex the trunk forward excessively during the throwing motion. 4. The fifth grade tended to place the upper arm close to the sagital plane and move the forearm and hand freely. 5. Looking at the greater variability of the angular velocity of the hand segment, the fifth grade seemed to have faster and more flexible movement of the wrist. 6. There were somewhat differences in the patterns and magnitudes of ground reaction forces among the different grades.

• Journal of Electrical Engineering and Technology
• /
• v.7 no.3
• /
• pp.349-357
• /
• 2012

This paper presents a hybrid motor prototype convenient to modify the magnet and reluctance torques. The rotor of the prototype consists of magnet and reluctance parts, so the generated torque includes both magnet and reluctance torques. A considerable feature of the motor is that the ratio of the magnet and reluctance parts can be modified on the rotor and the rotor hybridization ratio can be varied. Another important point is the mechanical angle between the parts changed by means of the suitable construction of the parts on the rotor shaft. Finite element (FE) analysis was carried out for the proposed motor and static torque measurements were realized. The FE results were compared with the experimental results. Average torque and maximum torque values were obtained and three dimensional 3-D graphs were formed by using the experimental data. It is possible to make different combinations by changing the parts and the angle between the parts due to the proposed motor. So the magnet and reluctance torques are modified and different combinations give different torque behavior.

• Transactions of the Korean Society of Machine Tool Engineers
• /
• v.16 no.6
• /
• pp.71-78
• /
• 2007

There have been continuous efforts to automate welding processes. This automation process could be said to fall into two categories, weld seam tracking and weld quality evaluation. Recently, the attempts to achieve these two functions simultaneously are on the increase. For the study presented in this paper, a vision sensor is made, and using this, the 3 dimensional geometry of the bead is measured in real time. For the application in welding, which is the characteristic of nonlinear process, a fuzzy controller is designed. And with this, an adaptive control system is proposed which acquires the bead height and the coordinates of the point on the bead along the horizontal fillet joint, performs seam tracking with those data, and also at the same time, controls the bead geometry to a uniform shape. A communication system, which enables the communication with the industrial robot, is designed to control the bead geometry and to track the weld seam. Experiments are made with varied offset angles from the pre-taught weld path, and they showed the adaptive system works favorable results.

• Journal of Institute of Control, Robotics and Systems
• /
• v.18 no.8
• /
• pp.713-718
• /
• 2012

Lumber spine range of motion has been used to measure of physical and functional impairment by various tools from a ruler to 3D kinematic devices. However, pre-existing tools have problems in either movement or accuracy and reliability limitations. Accurate devices are limited by fixed space whereas simple devices are limited in measuring complex movements with less accuracy. In order to solve the location, movement and accuracy limitations at once, we have developed a novice measurement device equipped with accelerometer sensor and gyroscope sensor for getting three-dimensional information of motion. Furthermore, Kalman filter was applied to the algorithm to improve accuracy. In addition, RF wireless communication was added for the user to conveniently check measured data in real time. Finally, the measurement method was improved by considering the movement by a reference point. An experiment was conducted to test the accuracy and reliability of the device by conducting a test-retest reliability test. Further modification will be conducted to used the device in various joints range of motion in clinical settings in the future.

• Korean Journal of Occupational Health Nursing
• /
• v.20 no.3
• /
• pp.319-327
• /
• 2011

Purpose: The purpose of this study was to measure patient satisfaction among injured workers and determine the factors that affect satisfaction of the hospital services. Methods: The subjects of this study were 231 injured workers hospitalized in I WC Hospital and D WC Hospital located in one of the major cities in Korea, all of whom agreed to participate in this research. The questionnaires were selected as literature suggested for explaining satisfaction of the hospital services, general characteristics of injured workers, characteristics of the hospital services. The data were analyzed with descriptive statistics, t-test, ANOVA, multiple regression analysis by SPSS/WIN 18.0. Results: The patient satisfaction level is at 3.2 point, which is lower than general patient satisfaction in previous study. There were significant differences in satisfaction scores, depending on the gender, degree of medical treatments, the specialty of medical team, staff's kindness, medical treatment process, the cleanliness of hospital and the convenience of facilities. It was found that the patient satisfaction among injured workers is affected by the characteristics of the hospital services. Conclusion: It is necessary to promote medical facilities, specialization of doctors and nurses, staff's kindness, medical treatment process and hospital cleanliness for developing Workers' Compensation hospital services.

• Journal of Power System Engineering
• /
• v.10 no.1
• /
• pp.60-64
• /
• 2006

Alumina ceramic for textile machinery was sintered and subjected to three-point bending. A semicircular surface crack was made on each sample. Crack-healing behavior was systematically studied, as a function of crack-healing temperature and crack size. The bending strength and fracture toughness of the crack-healed sample from $1200^{\circ}C\;to\;1400^{\circ}C$ were investigated. A statistical approach based on Weibull distribution was applied to the test data to evaluate the dispersion in the fracture toughness. Alumina ceramic for textile machinery have the ability to heal after cracking, from over $1300^{\circ}C$. The material can completely heal a $65{\mu}m$ diameter semielliptical crack. The fracture toughness could be explained by 2-parameter Weibull distribution.