Journal of the Korea Society of Computer and Information
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v.24
no.2
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pp.85-93
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2019
The purpose of this study is to provide basic data for the development of clothing which can improve the satisfaction of male university students' body shape by classifying the perception of body shape and examining characteristics by type. The types of recognition of body shape of male college students were classified into five types: developed upper body with protruding under abdomen, normal body with long legs, developed under body with big skeleton, skinny body, and ladder type normal body. The actual body shape was classified into three. The Y type had a long chest length and a shoulder developed, and the lower body silhouette was plain and short. Type H was flat with little protrusion from the chest to the hip. Type X has a larger hip and longer hip length than the waist. Body type was classified based on bust, waist, and hip circumference, but recognition body type was classified based on visual characteristics. It is thought that ergonomic consideration is needed to cover the disadvantages of each body type considering the aesthetic part as well as wearing comfort in accordance with the trend of the fashion market nowadays that the slim fit is generalized. This study was limited to male university students in their early 20s in Chungbuk province. Therefore, we could not grasp attitudes and perceptions of male university students living in other provinces. Therefore, we should pay attention to the generalization of the results of this study.
Hwang, Kun;Shin, Jung Yae;Lee, Hye Kyung;Lee, Hwan Jun
Quality Improvement in Health Care
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v.10
no.2
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pp.154-163
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2003
Purpose: The aim of this study is to develop and apply the critical pathway to the nasal bone fracture patients and to elucidate its effect. Methods: Critical pathway (CP) sheet and questionnaire were developed by a team approach. Critical pathway were applied to 30 nasal bone fracture patients (CP group) from June 2001 to November 2001. Length of hospitalization, cost for hospitalization and bed turnover rate of CP group were compared to those of the 30 patients who had same disease entities and treated by conventional regimen (control group). Results: Length of hospitalization in the CP group (4.20 day) were significantly shorter than that of control group (6.21 day). Mean cost for hospitalization of the CP group (492,106 won) were significantly lower than that of control group (678,376 won). Bed turnover rate in CP group (2.5) were higher than that of control group. The patients satisfaction for the medical personnel, explanation regarding operation procedure, therapeutic operation fee, and length of hospitalization were all affirmative. Conclusion: Critical pathway that we developed for nasal bone fracture definitely improved the quality of treatment and lowered cost of medical service. Furthermore, other critical pathways should be developed for another facial trauma patients.
PURPOSES : The authors set out to estimate the related carbon emissions, energy use, and costs of the national freeways and highways in Korea. To achieve this goal, a macro-level methodology for estimating those amounts by road type, road structure type, and road life cycle was developed. METHODS : The carbon emissions, energy use, and costs associated with roads vary according to the road type, road structure type, and road life cycle. Therefore, in this study, the road type, road structure type, and road life cycle were classified into two or three categories based on criteria determined by the authors. The unit amounts of carbon emissions and energy use per unit road length by classification were estimated using data gathered from actual road samples. The unit amounts of cost per unit road length by classification were acquired from the standard cost values provided in the 2013 road business manual. The total carbon emissions, energy use, and cost of the national freeways and highways were calculated by multiplying the road length by the corresponding unit amounts. RESULTS: The total carbon emissions, energy use, and costs associated with the national freeways and highways in Korea were estimated by applying the estimated unit amounts and the developed method. CONCLUSIONS: The developed method can be employed in the road planning and design stage when decision makers need to consider the impact of road construction from an environmental and economic point of view.
In this study, a joint survey system was developed to efficiently analyze geometrical characteristics of joint structures in rock mass using photogrammetric technique. The system includes both hardware and software. The hardware consists of a high resolution image camera for photographing image of a surface of rock body, a direction controlling system for adjusting the attitude of camera, and a digital compass for measuring the rotation angle of camera. The software was also developed in order to analyze the orientation, density, mean length of joints revealed on the images of rock surfaces. The software developed in this study was named as JointeXtractor. As applying this system into several field measurements, the orientation, density, mean length of joints could be quantitatively measured through analyzing the images of rock surfaces, in which the case of a difficult-to-access area was especially included for the test of the system.
This study was intended to develop the system automatically controlling travel direction of combine by means of sensing paddy rows. The control system was composed of three detecting levers having different length, micro-switch, microcomputer and electro-hydraulic control system. Sensor and control system developed was tested to estimate optimum design values and its actual performance as installed in combine. The computer simulation and performance test at simulated and actual field were conducted to test for possibility of practical use. The results of the study arc summarized. as follows: 1. The travel traces of combine hiving the conventional sensor with 2 levers and the new sensor detecting the slope of paddy rows were compared through computer simulation. Turning frequency of combine having new sensor was fewer than that of conventional sensor, but the rate of turning for the combine with new sensor was much greater than that of conventional sensor. 2. As sensor was established behind the tip of divider, the sensor itself well followed paddy rows but the tip of divider did not, resulting in divider being deviated from paddy rows. It was analyzed that the sensor should be attached closer to the tip of divider to have a better performance of the control system. 3. The greater the length of sensor lever for given location of sensor attachment and combine forward speed, the higher sensitivity of turning in control system. Moreover, increasing combine speed resulted in a worse performance of control system following paddy rows. Consequently, it was necessary that an optimum length of sensor attachment and for the range of combine operational speed. 4. Field test of combine installed with the sensor and electro-hydraulic system developed in this study showed that it may be operated smoothly and well behaved to paddy rows to 4th gear of combine speed which was 59cm/s. Consequently. it was concluded that the combine with the guidance control system developed in this study may be successfully used for paddy combining.
This study investigated the effects of cantilever length, location and load condition on stress distribution developed in the implants, prostheses and supporting tissues. The osseointegrated prostheses with two 10mm Branemark implants at 2nd premolar and 1st molar sites with cantilever extensions at 1st premolar, 2nd and 3rd molar sites were constructed. Under 100N, 200N of vertical and $45^{\circ}$ oblique loads at the cantilever pontics, stress distribution patterns and displacement were analyzed with three dimensional finite element method. The results were as follows : 1. The stress was concentrated at the joint of the cantilever pontic and implant superstructure, the neck of implant and the ridge crest near the cantilever But there was little load transfer to the lower supporting tissues of implants. 2. The implant near the cantilever was displaced inferiorly while the implant far from the cantilever was displaced superiorly. In horizontal direction the implants were displaced to the direction where the loads were applied, except the apexes of the implants. 3. In case of anterior cantilever, the stress and displacement were higher than the prosthesis connected with natural tooth. 4. The stress developed in the posterior cantilevered type was higher than in the anterior cantilevered type. The greastest stress was concentrated at the ridge crest near the posterior cantilever. 5. The longer the cantilever, the more the stress was developed and was concentrated at the joint of the cantilever pontic and implant superstructure. 6. Under oblique load, the stress was concentrated at the necks of implants and the ridge crests, but decreased at the joint of the cantilever pontic and implant superstructure than under vertical load.
The purpose of this study was to develop jacket patterns that could fit well for women in their 20s with turtle neck syndrome body shape and to present a pattern drafting method. As a research method, an educational pattern was chosen through a preliminary experiment. Fit problems of the educational pattern were derived by wearing it on a virtual model with a turtle neck syndrome body type for each neck angle. Based on the three types of experimental patterns developed by supplementing these problems, a development pattern drafting method was developed for each neck angle. Three development patterns were compared and evaluated with the educational pattern using 3D virtual fitting. Fit problems of the educational pattern included: 1) insufficient ease amounts for hip, hem, bicep, elbow, and sleeve hem circumference; 2) horizontal items could not be leveled due to insufficient back length; 3) the shoulder line went backwards; and 4) the front center line did not form a vertical line. To solve these problems, an experimental pattern was developed by increasing the insufficient ease amount, increasing the insufficient back length, and correcting the position of the shoulder line. Measurements that differed in the pattern drafting method of the three types of development patterns by neck angle were positions of back center line and back neck point, front length, and front neck width. Through appearance evaluation of the development pattern and educational pattern by neck angle, the development pattern was highly evaluated, indicating that problems of the educational pattern were improved.
Journal of the Korean Society for Precision Engineering
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v.24
no.8
s.197
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pp.116-121
/
2007
The length of root canal has to be measured for endodontic treatment. Several electronic apex locators were developed to measure the length of root canal by other researchers. And their accuracies were verified by X-ray or micrometer method. But these methods did not consider the non-linear bends of pulp and had ${\pm}0.5mm$ error which was large enough to measure the length of root canal. The purpose of this study is the introduction of a new method to measure the length of root canal and the verification of the accuracy of an electronic apex locator using a Micro-CT. The length of root canal of 6 teeth were measured with the electronic apex locator. When the electronic apex locator reads 0.5, 0.6, 0.7, 0.8, 0.9 and 1.0 mm length of the file which was inserted in the hole of the tooth to measure the length of root canal. The average (${\pm}$Standard deviation) length of root canal of 6 teeth measured by the Micro-CT was $0.49{\pm}0.03,\;0.59{\pm}0.04,\;0.68{\pm}0.03,\;0.78{\pm}0.03,\;0.90{\pm}0.04\;and\;1.01{\pm}0.03mm$, respectively. The maximum error of the electronic apex locator was 0.06 mm.
Journal of the Korean Society of Clothing and Textiles
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v.40
no.4
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pp.701-715
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2016
This research compared 3 types of jacket pattern design methods for men's wear (age range 25-35) in textbooks. We are to develop research pattern with problem solving based on an analysis of three jacket patterns. The comparative analysis revealed that loose-silhouette slopers A and B scored high in functional evaluation and low in appearance evaluation. However, the tight-silhouette slim-line sloper C received high points in appearance evaluation, but low scores in functional evaluation. All three slopers were evaluated low in the back appearance. The design characteristics of the development jacket sloper were: front width, ($1/10chest{\times}2$)+0.8cm; side width, 1/10 chest+5.5cm; back width, ($1/10chest{\times}2$)+1.5cm; armscye depth, 1/8 chest+11cm; waist back length, 1/2 jacket length+5cm; and hip length, 1/2 (jacket length-waist length)+1cm. The proportions against jacket length were applied to waist length, hip length, and the position of chest/waist pockets. In addition, the back part with low appearance estimation was adjusted as comfortable with the back curve line. Appearance evaluation and 3D clothes modeling system (CLO) showed an overall improvement in the developed jacket sloper when compared to the original jacket slopers.
The histological and histochemical study of the body of axis and 1st intervertebral disc in the Korean native cattle fetus was attempted to early developmental process. The experimental animals used in this study were collected from fetus of the Korean native cattle ranging from 50mm to 180mm in Crown-Rump length(CR-length). The results were summerized as follows: 1. The ossification centers appeared centrum 1 and centrum 2 of the axis in 110mm CR-length fetus of the Korean native cattle. The centrum 2 was formed little earlier than the centrum 1. 2. The histochemical reactions for collagenous fibers in the axis revealed negative in 50mm CR-length, mild positive in 90mm CR-length, and strong positive in 110mm CR-length, respectively. 3. Dense collagenous fibers were observed in the notochord through the centrum 2, and intervertebral disc developed into cuneiform dorsoventrally, It's contour looks like an annual ring. These fiber bundle arranged lamellar formation. 4. The intervertabral disc of 50mm CR-length fetus was composed mainly mesenchymal cells, and these cell showed aggregation in the central portion. The intervertebral disc of 110mm CR-length fetus was consisted of pricipally fibroblast, and notochordal sheath formed with two layers in the center.
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