• Transactions of the Korean Society of Mechanical Engineers A
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• v.32 no.8
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• pp.693-700
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• 2008

The primary mirror system in a satellite camera is an opto-mechanically coupled system for a reason that optical and mechanical behaviors are intricately interactive. In order to enhance the opto-mechanical performance of the primary mirror system, opto-mechanical behaviors should be thoroughly investigated by using various analysis procedures such as elastic, thermo-elastic, optical and eigenvalue analysis. In this paper, optimal design of the bipod flexure mounts for high opto-mechanical performance is performed. Optomechanical performances considered in this paper are RMS wavefront error under the gravity and thermal loading conditions and 1st natural frequency of the mirror system. The procedures of the flexure mounts design based on design of experiments and statistics is as follows. The experiments for opto-mechanical analysis are constructed based on the tables of orthogonal arrays and analysis of each experiment is carried out. In order to deal with the multiple opto-mechanical properties, MADM (Multiple-attribute decision making) is employed. From the analysis results, the critical design variables of the flexure mounts which have dominant influences on opto-mechanical performance are determined through analysis of variance and F-test. The regression model in terms of the critical design variables is constructed based on the response surfaceanalysis. Then the critical design variables are optimized from the regression model by using SQP algorithm. Opto-mechanical performance of the optimal bipod flexure mounts is verified through analysis.

• Journal of the Korean Society of Costume
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• v.56 no.4 s.103
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• pp.33-47
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• 2006

In 21 century, the ubiquitous environment is advanced fast through the so-called digital convergence. This research experts what is the next generation of traditional fashion product purchase behaviors. The purpose of this study is to analyze the fashion product purchase decision making in the development stages of ubiquitous environment. The quantitative Investigation was executed for 487 collegians and the data were analyzed with Frequency, percentage, ANOVA, Duncan test and multiple regression by using SPSS win version 10 package. The results of this research were as followed: First, in the 1st stages of ubiquitous developmental environment, using internet pc or mobile phone was analyze the difference between fashion shopping orientation group and purchase restricted factor Second, as a result of the factor analysis of the ubiquitous 2nd stages, four lower dimensions were made: giving information; wearable effect, buying facility; interest from purchase. as a result of ANOVA, there were any differences between fashion shopping orientation group and ubiquitous 2nd stages. Third, in the 3rd stages of ubiquitous developmental environment, there are differences between fashion shopping orientation group and ubiquitous 3rd stages. And the result from regression analysis of the ubiquitous 2nd stages and 3rd stages showed that buying facility factor in increasing need recognition, wearable effect factor in fashion information acquisition, giving information factor in have a intention to buy in ubiquitous #3 rendition are most influential.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.23
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• pp.10095-10099
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• 2015

Background: The present study was conducted to determine knowledge level of technicians working in hospitals about testicular cancer (TC) and self-examination of testicles (TSE) and to determine levels of consciousness and implementation status about TSE. Materials and Methods: This cross-sectional study was conducted with technicians working in hospitals (n=243) between $2^{nd}$ January-$31^{st}$ May 2012 at private and governmental hospitals in urban Kayseri. Healthy control subjects (n=235) who were similar to technicians in terms of age, education level and income status were also included to the study. Chi-square test was used in comparison of categorical variables. Results: Technicians were significantly more aware of TC than controls, but the latter were found to have significantly more information about TSE. There was no significant difference between the two groups in terms of knowing how to do TSE and 80% of both groups were unaware this exam. Of technicians, 19.8% and of controls, 25.5% did TSE, the difference being statistically insignificant. First reason for not doing TSE was "not-knowing" among technicians (48.1%) while it was "ignorance" among controls (66.8%). Of technicians doing TSE, 37.5% did as it came to their mind while 51.7% of controls performed TSE several times in the previous year. Technicians were significantly more afraid of getting TC than controls (p=0.037). Conclusions: It was determined in the present study that rates of TSE were similar between technicians and controls. However compliance with the recommended frequency and right method was low. Consequently, public health education should be planned and applied in order to increase the knowledge of TC and TSE.

• Journal of Nutrition and Health
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• v.40 no.8
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• pp.753-761
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• 2007

The objective of our study was to evaluate the dietary intakes and eating habit for seniors utilizing ten different social welfare centers in Seoul, Korea. The total number of subjects of this study was 543(male: 199, female: 344) of 60 years of age or older. The survey was performed through personal interview questionnaires from May 3rd to June 1st 2006. After assigning subjects to four categories based on family type, single, couple, joint family, and other, these categories were compared with the estimated total nutrient intakes and eating habit. Validity was assessed by comparison with 24-hour dietary recalls and dietary variety score(DVS). The results showed that senior in single family type was far lower than that of couple family type in terms of frequency of meal per day and intake of snacks. Dietary variety score represented that a single female with social security beneficiary showed the lowest variety score compared with other family type. The lunch meal provided by social welfare center turned out to be the most nutritious diet and had significant proportion of daily intakes in essential nutrients such as protein, iron, vitamin A, and vitamin C. Taken together, the family type was a significant factor and the accompaniment is another effector on dietary pattern in the elderly. We strongly suggest that the current lunch program in welfare center should be expanded to breakfast meal, and furthermore the small commodity program is also needed to provide the elderly with meal for social communication.

• Journal of Acupuncture Research
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• v.21 no.5
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• pp.113-122
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• 2004

Objective : This study is designed in order to evaluate the therapeutic effect of venesection on acute low back pain. Methods : From Nov. 1st 2003 to Apr. 30th 2004, 40 cases of low back pain patients at acute stage were divided into 2 groups; one group(control group) took only acupuncture therapy, and the other group(test group) took acupuncture and venesection therapy. Pain rating score(PRS) was used to assess the pain for its intensity, frequency, duration, and aggravating factors. And visual analog scale(VAS) was used, too. PRS and VAS was checked twice, before the treatment and after the treatment. Treatment was done twice a day. Results : Both acupuncture therapy and acupuncture with venesection therapy showed good effect on low back pain of acute stage. And the latter group showed better effect on decreasing pain than former. It was proved by the difference between PRS and VAS checked before treatment and what checked after treatment. But it was not proved statistically. Conclusion : Only acupuncture and acupuncture with venesection can be recommended as a useful therapy to treat low back pain of acute stage.

• Journal of Haehwa Medicine
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• v.14 no.2
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• pp.177-187
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• 2005

Objective : This study is designed in order to evaluate the therapeutic effect of Scalp Acupuncture and Do-ma Acupuncture related with Governer Vessel(Dok) and Bladder Meridian(Chok-taeyang) on acute low back pain Methods : We investigated 10 patients suffering from acute low back pain were treated from Mach. 1st 2005 to Jun. 30th 2005. 10 patients, were diagnosed only straightened curvature on lateral view of lumbar spine X-ray and get Scalp acupunture related with Governer Vessel(Dok) and Bladder Meridian(Chok-taeyang) and Do-ma acupuncture. Pain rating score(PRS) was used to assess the pain for its intensity, frequency, duration, and aggravating factors. And visual analog scale(VAS) was used, too. Results : Both Scalp acupunture related with Governer Vessel(Dok) and Bladder Meridian(Chok-taeyang) and Do-ma acupuncture therapy showed good effect on acute low back pain. It was proved by the difference between PRS and VAS checked before treatment and what checked after treatment. In the evaluation of treatment effect, Exellent was 2(20%), Good was 5(50%), Moderate was 3(30%), Poor was 0(0%). Conclusion : The therapeutic effect of Scalp Acupuncture and Do-ma Acupuncture on acute low back pain can be recommended as a useful therapy to treat acute low back pain.

• Journal of the Korean Ceramic Society
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• v.44 no.8
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• pp.437-444
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• 2007

The broth solution was prepared by the mixing of an uranyl nitrate, THFA, PVA, and water. The uranium concentration of the broth solution was $0.5{\sim}0.8$ mole-U/L and the viscosity of it was $30{\sim}80cSt$. The droplets of this broth solution were farmed in air and ammonia by the vibrating nozzle with the frequency of 100 Hz at the amplitude of $100{\sim}130V$. The diameter of the droplet was about $1900{\mu}m$ from using the nozzle diameter of 1 mm. The diameter of the aged gel was about $1400{\mu}m$ after aging in ammonia solution at $60{\sim}80^{\circ}C$, and the dried gel with the diameter of about $900{\mu}m$ was obtained after drying at room temperature or partially vacuum condition. The diameter of the calcined $UO_3$ microsphere after calcination at $600^{\circ}C$ appeared about $800{\mu}m$ in air atmosphere. Although the droplets of the same sizes were formed, the calcined microspheres of different sizes were manufactured in the case of the broth solutions of the different uranium concentration. The droplets of the desired diameters were obtained by the change of the nozzle diameters and the broth flow rates.

• The Journal of Korean Association of Computer Education
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• v.19 no.3
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• pp.1-10
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• 2016

In the $21^{st}$ century, countries around the world including Korea attempted many changes in informatics education. Considering its own situation, each country has recognized the necessity of informatics education and is taking actions. This research aims to study informatics which is the foundation of informatics education called in different names including computer science education and programming education. Terms related to information were focused. Mainly, it was analyzed the frequency of these terms from academic papers, higher educational institutions' department names, and academic journals. Results of this analysis suggested that infomatics subject is originated from informatics which can be a Meta science of all fields. This research investigated informatics education not only as academic perspectives but social-needs and provide evidence that informatics subject which is originated from the informatics of a meta science needs to be a mendatory subject in primary and secondary education.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.27 no.8
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• pp.709-716
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• 2016

In this paper, A duplexer module with temperature-insensitive electrical characteristics was proposed for remote wireless communication system. Duplexer modules are required to have performances of low insertion loss, high isolation between transmitted band and received band, harmonic suppression as well as high power durability in the system for transmitting guided information to missile flying a free space on the ground. The proposed duplexer module are consist of transmission bandpass filter and receiving bandpass filter which are connected to common antenna port, planar coupler for output power monitoring and low pass filter for harmonic attenuation of power amplifier and coaxial cavity resonator. The material and dimensions of the resonator are determined for minimum frequency shift by temperature variation using 3D EM simulation. The measured results of the prototype showed a good agreement with the simulation results, and it should be well applied not only for guided weapon systems but also for any other communication systems such as remote radio head.

• The Journal of Korean Medicine
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• v.27 no.3 s.67
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• pp.212-221
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• 2006

Objectives: This study was designed to investigate acupuncture treatment of alopecia patients by researching literature and to standardize acupuncture treatment. Methods: We extracted the parts about acupuncture treatment of alopecia which are called 'Tal Bal(說髮), 'Ban Dok'(斑禿), 'Tal Mo'(脫毛), 'Bal Rak'(髮洛), 'Wonhyung Talmo'(圓形脫老) from 2 ancient and 49 modern oriental medicine literal sources. We surveyed the frequency and characteristics of the acupoints used for treatment of alopecia, and the acupoint was classified according to its meridian or demonstration. The results of this study were recorded as follows: 1. The most frequently used acupoints were GB20(風紙), GV20(百會), BL13(膈兪), SP6(三陰交), ST36(足三里), BL23(腎兪), SP10(血海), LI11(曲池), in that order. 2. The most frequently used meridians were the urinary bladder meridian (足太湯膀胱經), the Governor Vessel(督豚), the spleen meridian(足少陰脾經), and the gall bladder meridian(足少陰膽經), in that order 3. The most frequently used regions were the head, under the knee, and the back, in that order. 4. The most frequently used Jang organs and Bu organs were the spleen(脾), the stomach(胃), the liver(肝), the gall bladder(擔), the lungs(肺), and the large intestines(大腸), in that order. 5. Common methods of differentiation of alopecia are Hyulyulsaengpung(血熱生風), Gichehyutea(氣滯血瘀), Gihyulyanghea(氣血兩瘀), and Gansinbugok(肝腎不足). Conclusions : For treatment of alopecia, all the patient's symptoms, including alopecia, must taken into consideration and demonstrated.