• Magazine of the Korean Society of Agricultural Engineers
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• v.38 no.1
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• pp.98-106
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• 1996

An irrigation scheduling model, IRIS developed to evaluate irrigation demand and irrigation time for upland crops. For IRlS modeling the soil moisture simulation model, SWATRER was adopted and modified. The developed model, IRIS operated under 5 different soil moisture level that is 20%, 40%, 60%, 80% of available soil moisture and optimum soil moisture level, OSML, which is different about the growing stage and no rainfall condition during growing period. As a result for IRIS simulation, irrigation demand for 5 different soil moisture level was 332.3, 409.8, 569.3, 732.2, 539.3mm, irrigation number was 5, 8, 18, 54, 16 times and irrigation interval during peak time of consumptive use was 20, 13, 6, 2, 6 days respectively. It is appeared that the higher soil moisture level the more irrigation demand and irrigation number and the higher soil moisture level the less irrigation interval.

• Journal of Korean Neurosurgical Society
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• v.40 no.4
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• pp.304-308
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• 2006

Statistical analyses used in clinical articles published on the Journal of Korean Neurosurgical Society were identified and appropriateness of statistical aspects in reporting results was assessed. Forty seven clinical articles were selected in this study, which were published from February, 2005 to February, 2006 on the journal. The frequency of statistical analysis was as follows : descriptive statistics only 24 [51.1%]. one type of statistical method 10 [21.3%], two or more methods 13 [27.6%]. An assessment of statistical aspects was performed in 24 clinical articles reporting inferential statistics. Ten articles [41.7%] did not adequately describe or reference all statistical methods used. There were six articles [25.0%] not reporting the confidence level used as the critical criteria of the statistical significance. In thirteen articles [54.2%] it seems more appropriate to implement multivariate analyses in addition to univariate analyses. We recommend that the journal readers should concentrate on improving their knowledge of basic statistics and statistical review for manuscripts submitted should be sought from professionals in the fields of biostatistics and epidemiology.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2001.10a
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• pp.426-430
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• 2001

Treatment efficiency and plant growth of a combined Pond-Wetland system was investigated. The system is composed of primary and secondary ponds and six wetland cells. Reed and cattail were planted as vegetation of wetland cells. The removal rates of BOD, SS, T-N, and T-P were 40%, 41%, 30%, and 47% at the secondary pond, respectively. The system removal rates measured at the last wetland cell were 57%, 54%, 60%, and 68% for BOD, SS, T-N, and T-P, respectively.

• Proceedings of the KAIS Fall Conference
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• 2011.05b
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• pp.1024-1028
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• 2011

조리전공 남녀학생의 식습관 분석결과 남자평균 연령은 20.4세, 여자 19.8세, 신장은 남자 174.0cm, 여자 162.6cm, 체중은 남자 71.4kg, 여자 60.3kg으로 나타났다. 평균 체지방율은 남자 20.5%, 여자 30.2% 로 남녀 모두 과체중에 해당되었다. 대부분의 학생들이 본인의 체중에 유의적인 차이로 불만을 나타내었으며, 남학생의 36.2%, 여학생은 45.1%가 좀 살찐형으로 생각하고 있었으며 남녀 모두 표준형과 좀 마른형이 이상체형이라고 응답하였다. 남학생의 51.5%와 여학생은 35.2%가 아침을 먹지 않고 있었고 점심식사는 남학생은 매일 먹는 비율이 40.7%, 여학생은 매일 27.0%였으며, 저녁식사는 남학생의 54.8%, 여학생은 35.5%만이 매일 먹고 있어 유의적인 차이가 있었다. 식사형태는 밥류를 선호하고 야식은 남학생 55.7%, 여학생 69.7%로 주 1~2일 먹는 비율이 가장 많았으며, 식사를 하지 않는 이유는 시간이 없어서 못먹는다는 응답이 많았다. 스트레스 시 남학생의 56.%는 평소와 같이 먹는 반면 여학생의 58.7%는 평소보다 많이 먹고 있었다.

• The Research Journal of the Costume Culture
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• v.17 no.1
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• pp.40-54
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• 2009

Many studies make us difficult for understanding the specific concept of NOW avant garde by misusing avant garde or by using the over wide-ranging concept. The purpose of this study is to define the concept of NOW avant garde fashion by analyzing its fashion and its paradigm characteristics, after considering modern avant garde fashion history. This study was used with bibliographic research as well as internet search of qualitative method for analyzing fashion show clothes since 2005 women's wear. The characteristics of NOW avant garde fashion are classified into plural deconstructivism, econonism that integrates the last avant garde factors with logical economics, and the aesthetic of Tech-Human. To conclude, the concept of NOW avant garde fashion is defined as the fashion expressing either the digital-hybrid images or the deconstructive images meaning elimination, unification or confinement, being pilled up one on another, bizarre connection, transposition, and distortion.

• Journal of the Korean Chemical Society
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• v.9 no.1
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• pp.49-54
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• 1965

One of the difficult and time consuming problems in the production of magnesia from sea water is a settling rate of magnesium hydroxide. In this experiments, authors attempted to accelerate its settling rate by addition of various sedimenting agents as C.M.C., Separan and Starch, and sought for optimum calcination temperature for domestic dolomite, as alkali source, mole ratio of dolomite milk to bittern. It is observed through experiments that the small amounts of sedimenting agents, C.M.C., Separan, starch, 20 mg/l, 40 mg/l, 400mg/l, respectively increase the settling rate of magnesium hydroxide by 8 times or more. The following conditions resulted in good yield of magnesium hydroxide from sea water with relatively tolerable calcium oxide contaminated for the magnesium clinker. Calcinating temperature, $1,100{\sim}1,200^{\circ}C$, mole ratio of 10% dolomite milk to magnesium salts in sea water or bittern, 1. 2 : 1.

• Progress in Superconductivity and Cryogenics
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• v.7 no.1
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• pp.13-16
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• 2005

High temperature superconductor, $\YBa_2Cu_3O_{7-x}$ (YBCO) and ferroelectric, $\Ba_{0.1}Sr_{0.9}TiO_{3}$ (BST) multilayer thin films were deposited using on MgO(100) substrates pulsed laser deposition. The thin films exhibited only (001) peaks of YBCO and 1357 The HTS thin films demonstrated excellent zero resistance temperature of 92.5 K. We designed and fabricated HTS ferroelectric phase shifter using high frequency system simulator and standard photolithography method, respectively The HTS phase shifter shows a low insertion loss (2.97 dB) and large phase change ($\162^{circ}$) with 40 V do bias at 10 GHz. The HTS phase shifter shows 54 of figure of merit. These results can be applicable to phased anay antenna system for satellite communication services.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.40 no.1
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• pp.45-54
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• 2003

Turbo compressor needs high speed rotation of impeller in structure, high rated gearbox and conventional induction motor. This mechanical system increased the moment of inertia and mechanical friction loss. Resently, the study of turbo compressor applied super high speed motor and drive, removing gearbox made its sire small and mechanical friction loss minimum. This paper describes the implementation of the vector control schemes for a variable-speed 131㎾ PMSM(Permanent Magnet Synchronous Motor) drive in super-high speed application.

• Journal of the Korean Home Economics Association
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• v.20 no.3
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• pp.45-54
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• 1982

This Study is designed to clarify the life satisfaction of the aged in Seoul. The data were taken from the interview and the questionaire with 40 items collected form 192 elderly. The T-test, F-test were applied and the results are as follows: 1. The greater life satisfaction is manifested by the aged men than the aged women. 2. The death of spouse is detrimental to the life satisfaction score of the aged. 3. There is no significant difference in life satisfaction between those living with and without their married children. 4. There is no significant difference in life satisfaction between any religion categories. 5. The better educated elderly are more likely to be satisfied with their life than less educated. 6. By increasing social contacts, the aged can strengthen their life satisfaction.

• Proceedings of the Korean Society of Crop Science Conference
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• 2006.04a
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• pp.40-54
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• 2006

It's not easy to detect the high quality and functional compounds for control quality of food materials. The electronic nose was an instrument, which comprised of an array of electronic chemical sensors with partial specificity and an appropriate pattern recognition system, capable of recognizing simple or complex odors. It can conduct fast analysis and provide simple and straightforward results and is best suited for quality control and process monitoring in the field of functional foods. Numbers of applications of an electronic nose in the functional food industry include discrimination of habitats for medicinal food materials, monitoring storage process, lipid oxidation, and quality control of food and/or processing with principal component analysis, neural network analysis and the electronic nose based on GC-SAW sensor. The electronic nose would be possibly useful for a wide variety of quality control in the functional food and plant cultivation when correlating traditional analytical instrumental data with sensory evaluation results or electronic nose data.