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이춘우,백성범 한국국제농업개발학회 2002 韓國國際農業開發學會誌 Vol.14 No.2
일본의 맥류 생산, 연구, 보급, 가공 및 유통에 대한 정책의 전개 방향을 설정한 신 맥류정책이 발표되었으며 이를 해설한 日本의 麥政策 이라는 책이 출간되었다. 이 책에는 향후 일본의 맥류 생산, 연구, 보급, 가공 및 유통에 대한 정책 설명과 정부의 대책이 해설하고 있다. 이 책이 우리나라의 맥류정책 수립에 참고자료로 활용될 수 있도록 요약하여 소개한다. 1. 생산자, 수요자 및 정부가 각자가 신 맥류정책에 부합한 생산비 절감을 위한 종합적인 노력하고, 문제점은 장기적인 시간을 가지고 해결을 모색한다. 2. 국내산 맥류는 민간유통에 맡기고, 생산자와 실수요자가 품질평가를 반영하여 직접 인수체계를 만들고 양질의 맥류생산 계획을 세운다. 3. 연구개발의 충실 및 강화로는 생산자, 실수요자의 의견을 품종개발에 반영하기 위하여 개발단계부터 생산자와 실수요자의 평가를 반영할 수 있는 새로운 체제를 설정한다. 4. 외국산 맥류는 국가무역에 의한 정부가 계획적으로 수입 및 효율적인 운영을 도모한다. 5. 사료용 맥류는 증산제도는 대체사료의 개발, 보급, 각종기업대책 등의 추진하여 2002년까지 폐지하고 특정맥류를 SBS(매매동시입찰)방식으로 단계적으로 도입한다. Japans agricultural situation is similar to Korea where many food crops are imported and the sector is heavily protected. The Ministry of Agriculture, Forestry and Fisheries in Japan announced a new policy to develop the wheat and barley sub-sectors. This policy aims to increase attention given to the cultivation, research, extension, and dissemination of technologies for these crops. The basic strategy is to transfer the management and control of wheat and barley from the government to the private sector. The production of wheat in Japan does not meet its demand because local wheat does not have good quality and price. This is one of the reasons why milling companies do not buy Japanese wheat. This study was conducted to look into this new policy and compare it with the developments in the Korean wheat and barley sub-sectors.
백형래,박수강,최연옥,한엄용,이성길 조선대학교 에너지.자원신기술연구소 1999 에너지·자원신기술연구소 논문지 Vol.21 No.1
Single-Phase diode rectifiers are widely used in industry. These rectifier, however, generate many harmonic components in the AC Power line and have the poor input power factor, which may create a power quality problem for other electrical apparatus in the vicinity of the rectifier. Power factor improvement and harmonic reduction in the AC line current have become very significant problems in single-phase diode rectifiers. In this paper, the high power factor boost converter using soft switching is proposed to improve the demerit. The simulation results show the validity of the proposed system.
이춘우,백성범,손영구 한국국제농업개발학회 2004 韓國國際農業開發學會誌 Vol.16 No.1
보리 파종 시기에 잦은 강우로 인하여 토양이 과습하여 보리 파종기계의 정상적인 작동이 어려워 파종을 하지 못하는 경우가 많이 있다. 토양이 과습한 경우에도 보리 파종을 하기 위하여 벼 이식기를 이용하여 보리 어린모 이식 가능성을 검토하기 위하여 2002년에는 작물시험장 수원시험포에서 시험한 결과는 아래와 같다. 가. 육묘일수는 3~6일이 좋았고 9일은 너무 자라 기계이식이 잘되지 않았다. 나. 이식율은 높이기 위하여 이식 전 경운하는 것이 좋았으나 월동율이 낮아지는 단점이 있었다. 다. 벼 이앙기를 사용하여 이식하므로 보리는 식물체가 연약하며 보리 어린모가 절단되고, 결주가 발생하는 문제점이 있었다. 라. 이식시 물이 없으므로 이앙기가 가라 앉지 않으므로 이식심도가 낮아져 어린 모의 활착율이 낮고 월동율이 낮았다. 마. 이식시 이식율이 낮고 월동율이 낮아 수수확보가 어려워 수량성이 낮았다. 바. 어린묘 육묘의 가능성을 검토하였으나 위에서와 같은 여러가지 문제점으로 인하여 보리 어린모 이식은 가능성은 낮은 것으로 사료되었다. Heavy rain during the seeding season of barley, poses a lot of problems such as wet soil stuck to the barley seeder making it difficult to use the machine, The cultivation area of barley is dependent on the weather conditions during the seeding time. Usually, during the rainy weather, the area of cultivation is decreased. Since the soil moisture is high during the rainy weather, the ordinary seeding method does not work efficiently, thus, there is a need for a new seeding method. This study was conducted to examine the possibility of using a rice transplanter in transplanting barley seedlings. Before the seedling was transplanted, plowing than non-plowing was increased to improve the rate of transplanting success. The barley seedling was first cut and set in shallow depth using the rice transplanter. To ensure success in transplanting, the wintering rate was decreased. These factors however reduced the number of panicle and yield. The study showed that using the rice-seedling box for barley is possible. However, transplanting the infant barley using the rice transplanter is impossible due to low transplanting rate and wintering.
이성길,백형래 조선대학교 에너지.자원신기술연구소 1999 에너지·자원신기술연구소 논문지 Vol.21 No.1
This paper deals with the output characteristics of resonant PWM inverter type X-ray generators connected to different DC power units i.e, a single phase full bridge rectifier. a three phase full bridge rectifier and a power storage unit(PSU). The quality of X-ray beam depends on the pulsating waveforms of DC voltage supplied to the X-ray tube. In a X-ray generator, the waveform of DC output voltage can be affected from harmonic distortion of DC input power. When a tube voltage waveform is distorted, the property of X-ray beam such as reproducibility, linearity and dose can be reduced. Therefore, this paper compared DC output waveforms and dose with three type of DC power units and show the experimental results in this paper.
수평모세관 시험을 이용한 점토질 모래의 투수계수 산정방법에 대한 실험적 연구
이원택,박성백 호남대학교 2007 학술논문집 Vol.28 No.2
The discharge velocity through a soil mass is proportional to the coefficient of permeability in general. The coefficient of permeability depends on the properties of the soil and the fluid. The factors related to the soil properties are shape and size of the soil particles, void ratio, grain size distribution, degree of saturation etc. Viscosity and unit weight are involved with the properties of the fluid. If the degree of pollution of the water is low and difference of temperature is not big, variation of viscosity and unit weight of water are small in the normal temperature range. Therefore coefficient of permeability largely depends on the properties of the soil. There are many kinds of permeability test. Most of them are executed for the saturated soil, but horizontal capillary test is executed for the dried soil. In the early stage of raining, earth near the surface is under the unsaturated state. In these case smearing velocity of rain is little difference with seepage velocity in horizontal capillary test. In this study, the method of obtaining the coefficient of permeability using horizontal capillary test is studied. The values of coefficients of permeability obtained from those of usual tests are not same with those from horizontal capillary tests. In this study falling head permeability test and horizontal capillary test were performed for 5 kinds of sample. As a results, coefficients of permeability from horizontal capillary tests are 1/220.58 of those from falling head permeability test.
LC 공진형 PWM 인버터를 이용한 X선 발생장치의 특성에 관한 연구
이성길,박수강,임홍우,조금배,백형래,임양수 조선대학교 에너지.자원신기술연구소 2002 에너지·자원신기술연구소 논문지 Vol.24 No.1
The conventional types of X-ray generators were bulky in physical size and heavy in weight, and the control accuracies of the output voltages were not always satisfactory. The high frequency switching inverter and converter technology on power conversion and control systems have been greatly closed up introducing power semiconductor devices. In this paper, the newly developed converter to take the balance of the output voltage versus the ground are also presented in detail to decreasing the volume and the weight of high voltage transformer and to stabilize ripple. This converter consists of the two independent L-C series resonant circuits using the two capacitances and the two primary windings of high voltage transformer.
백승룡,남철현,배성욱,김성우,권현숙,이정옥,전연숙 慶山大學校 保健福祉硏究所 2002 保健福祉硏究 Vol.7 No.-
The purpose of this study is to analyze and grasp the actual lumbaginous condition and relevant factors of 1,182 beauty artists of beauty shops in 5 metropolitan cities, small-to-medium cities, and fishing or agrarian villages for 3 months from June 20 to September 25, 2000 through questionnaires. 1) They showed 61.0 percents in her twenties, 66.4 percents of unmarried women from all the female objects, 70 percents in high school graduates as educational background, 52.4 percents in metropolitan city as service place, 25.4 percents in smoking rate, 71.6 percents in drinking rate, 48.1 percents in general bed as condition of bedroom, 17.9 percents in exercising rate, 53.6 percents in 'little eating', 39.6 percents in two or three centimeters of heel, and 89.5 percents in hair as beauty-related professional field. 2) The rate of lumgaginous experience of beauty artists was 83.5 percents. They showed higher rate of 91 percents in the thirties and forties, 92 percents of the married, 93.9 percents in junior college graduates, 97.2 percents in higher economic classes, 88.7 percents in smokers, 85 percents in general bed, 89.3 percents in sleeping on one's face, 85 percents in swimming, 92 percents in stretch, 86.7 percents in 56 to 60 kilograms of weight, 89.7 percents in group O blood, 90.5 percents in experienced women of abortion, 97 percents in heel over 8 centimeters, 58.3 percents in 'feel much fatigue', 93.6 percents in inconvenient chair of beauty shop, and 89.4 percents in a lack of recess than other group. 3) The more women who have been experienced in lumbago, the higher their social treatment(p<0.01), income(p<0.001), working time(p<0.05), job potentiality(p<0.05), inner affinity(p<0.05), and job satisfaction of environment(p<0.001) were. Women who suffered much stress related to job environment(p<0.001), client(p<0.01), and their duty(p<0.01) showed high rate of lumbaginous experience. 4) In degree of lumbago by characteristic, there was the significant difference in age over 50-years-old, unmarried women, college graduates, service of small-medium cities, higher economic classes, smokers or drinkers, hot-floored room, sleeping with ransack, stretch or swimming, group A blood, fat body, experience of abortion, 6 to 7 centimeters of heel, convenient chair of beauty shop, insufficient recess, lumbago continued for one to the three months in comparison of other group. 5) There were variables of posture such as to place materials under one foot(p<0.001), to lay arm on armrest and desk(p<0.001), to pull materials near body while lifting them (p<0.05), to sometimes use anodyne(p<0.01), not to lift also light materials(p<0.001), to be inconvenient in sleeping(p<0.001), to be absent at job for two or three days(p<0.01). The degree of depression(p<0.001), had the significant effect on the degree of lumbago(32.7%). The results are as follows : Beauty artists have faced upon dangerous job environment to cause lumbago. The more the industrial society will be developed, the more their burden of service will be increased. In addition, the occupational stress and posture of beauty artists who showed high job satisfaction and high economical level became major factors which have had an effect on their lumbago. In conclusion, it is desirable for beauty-related organizations and professionals to positively develop program of health education with much concern as well as to lessen stress of beauty artists through education of job posture and rightful life in order to prevent lumbago of those beaut.
이춘우,구본철,백성범,손영구,김홍식 한국국제농업개발학회 2002 韓國國際農業開發學會誌 Vol.14 No.1
보리 품종 중 춘파에 적응하는 품종을 선발하기 위하여 올보리 등 16품종을 시험한 결과를 요약하면 다음과 같다. 가. 천립중과 설립량과는 상관관계가 있어 천립중이 무거울수록 10a당 설립이 적고 수량은 많아지는 경향이었다. 춘파 재배는 생육기간이 짧고 고온하에 등숙이 이루어지므로 천립중이 가벼워지는데 대립종이 소립중에 비하여 설립이 적었다. 나. 수량은 맥종간에는 쌀보리가 겉보리나 맥주보리에 비하여 적었고, 또한 년차나 품종간 변이도 컸다. 다. 쌀보리 품종들은 겉보리에 비하여 간장이 짧고, 설립이 많아 수량이 적었다. 라. 춘파재배용으로는 천립중, 설립량, 간장, 성숙기, 수량 등을 고려할 때 올보리와 사천6호가 가장 안정성이 있는 품종으로 판단되었다. This study was conducted to select varieties for spring sowing in barley. The accumulated and the average temperatures affected the 1,000-grain weight and unmatured grain yield. There was a negative correlation between 1,000-grain weight and the yield of unmatured grain. The 1,000-grain weight became lighter because of short growth period and maturing in high temperature under spring sowing condition. Compare with the covered and two-row barley, the grain was lower than naked barley. Among 16 barley varieties. "Olbori", "Sacheon6" were well adapted to spring sowing condition.
이희백,천성문,안병환 대진대학교 교육대학원 교육연구소 1999 교육연구 Vol.1 No.1
The development of the efficient learning habit improves the learning ability and helps the adjustment of school life and self-development. Therefore this study is to develop the various training programs for learning habit improvement of college students and apply them to school.
金成朝,李甲湘,李基炫,白承和 圓光大學校 1993 論文集 Vol.27 No.2
靈芝載培에 있어서 一般的인 栽培法을 改善하여 靈芝의 收穫量을 높이고 品質向上을 시킬 目的으로 菌絲의 活着條件, 種菌接種 時期 및 方法, 버섯培養地의 土養種類 등을 달리하고, 栽培舍 構造設備을 改良하여 靈芝를 栽培한 結果는 다음과 같다. 種菌接種短木에 菌接種時期가 1月, 12月, 2月, 3月, 4月, 順으로 氣溫이 올라 갈수록 菌絲活着 期間이 빨라져 버섯培養할 때 까지의 菌絲培養 期間을 10日 以上 短縮할 수 있었다. 菌絲培養床의 크기 中 菌絲培養床 幅을 各各 0.8m,1.2m로 하였을 때 같은 菌絲培養期間 동안의 菌絲活着率은 89.6%, 96.4%, 91.2%가 되어 菌絲培養床 幅이 1.0m에서 菌絲活着率이 가장 높았다. 接種短木에 種菌을 接種 後 密封方法은 스치로폴을 막은 後 파라핀으로 密封한 것이 菌絲培養條件에 關係없이 푸른곰팡이 發生率이 가장 낮았고, 스치로폴만 막은것도 新聞紙를 材料로 菌絲培養 條件을 改善하여 푸른곰팡이의 發生率을 파라핀으로 完全히 密封 것과 거의 같은 水準으로 抑制 시킬 수 있었다. 二重 비닐하우스 栽培舍內의 內部 하우스에 遮光幕을 設置함으로서 一般 裁培舍 하우스의 6個月 水準의 靈芝生育 適溫期間을 8個月 以上 까지 延長할 수 있었고, 收穫回數를 年 2回에서 4回로 늘릴 수 있었다. 內部 하우스에 遮光幕을 設置하여 改善한 栽培舍에서는 버섯培養 後 2年次에 目標水準 收穫量의 96.9% 까지 收穫할 수 있었는데 一般 栽培舍에서는 目標 收量의 89.1%만 收穫할 수 있었다. 收穫量에서도 改良 栽培舍의 上品靈芝收量이 一般 載培舍에 比하여 1.5倍의 增收를 보였다. 粘土含量이 가장 많고 모래 含量이 적은 E 土壤에서 雜菌發生이 가장 甚하여 靈芝의 收穫量 및 品質이 가장 低調하였다. To increase the yield and to obtain much better the quality on grown Ganoderma lucidum cultured, these experiments were conducted under carefully controlled in greenhouse with the following conditions on spawn spread related with tentative planting time of short timber inoculated, sealing methods with styrofoam only used and with sealing wax after styrofoam used, soil textures of planting sites, temperatures and growing time as the outside shield was commonly culture method and the inside shield was one of the methods improved itself in these experiments with double vivyl greenhouse. The results were as follow: Speeds of spawn spreading on inoculating Ganoderma lucidum to the short timber were faster when the temperatures were increasing as Jan.<Dec.<Feb.<Mar.<Apr., and it could be short more than 10 days for tentative planting time with inoculation. During the same time of tentative planting the rate of spawn was the highest at the width of 1.0m when the widths of tentative planting hotbets were 0.8, 1.0, and 1.2m, and the rates were 89.6, 96.4, 91.2%, respectively. Occurrences of green mold on inoculated timbers were the lowest as the sealing wax after styrofoam used without the conditions of tentative planting, and when there were surrounding the pile of timbers with styrofoam only used to seal inoculating holes with the second hand newspapers, those were almost the same level as the sealing wax after styrofoam used. When the shield over the roof of the inside greenhouse in the double greenhouse was set, the time on growing could be prolonged until more than 8 months and the yield could be increased 2 times more from 2 to 4 times as compared with the outside shielding over the vinyl that was the common culture method to be known. The culture with inside shielding could improve to be possible that the 96.9% of objective yield was done during two years only and that the amount of the best qualities was 1.5 times than in the common culture, the outside shielding, there was 89.1% of yield only at the same time. In sandy caly that was the least sand and was the most clay of the soils experimented there was the least of yield, there were the plenty of various germs occurred and there was not good in the quality.