Yield of Rice Affected by Meteorological Elements in Yeosu Area of Korea

Kwon,Byung-Sun,Choi,Seong-Kyu,Shin,Jeong-Sik,Shin,Jong-Sup,Shin,Dong-Young,Hyun,Kyu-Hwan,Kuk,Yong-In,Park,Hee-Jin 한국자원식물학회 2003 Plant Resources Vol.6 No.2

This study was conducted to investigate the relationships between yearly variations of meteorological elements and yearly variations of productivity in rice. In addition, correlation coefficients among yield and yield components were used to find out the relationships between meteorological elements and productivity. Yearly variation of the mean air temperature in May was large with coefficients of variation(C.V.) of 25.0%, but the variation of the duration of sunshine in May were relative small. No. of panicles per hill and 1,000 grains wt. of brown rice were great with C.V. of 21.1, 19.7%, respectively, brown rice yield show more or less C.V. of 5.5% and milled rice show still less variation. Correlation coefficients between temperatures in period of cultivation from May and yield were positive correlations. Correlation Coefficients between precipitation in period of cultivation from Sep. to Oct. and yield are positive correlations. Correlation coefficients amount the panicle length, no. of panicles, no. of spikelets, ratio of ripened grains, 1,000 grains wt. of brown rice, milled rice yield, brown rice yield and milled rice yield were positively significant at the level of 1 %, respectively.

DS-FSK 통신 시스템에 대한 연구

權起弘,金龍顯 대구산업정보대학 1998 논문집 Vol.12 No.2

Recentlly, several experiments have been reported on utilization of commerical power distribution line for data transmission purpose in realizing local FA/HA system. The power line, originally having not been in stalled for the communication purpose, exhibits very poor transmission characteristics; high attenuation rate with severe selective fading, extremely low line impedance and persistent line noises ect.,usually deny the signal transmission unless cumbersome measures are taken, which cannot normally be allowed to local FA/HA system. This paper first studies general characteristics of local power distribution line and selects frequency band relatively recommendable for signal transmission. Also, described are the neccessity of applying spread spectrum technique in order to compete severe selective fading phenomenon existing in the line. The auther then introduces a highly reliable, verstile and yet simple data transmission system designed to meet above requirements. The system operates on the principle of meet DSSS technique but transmits two different carrier frequencies, instead of one depends on the polarity of the SS output. By applying the two carrier meth od, not only the problems related with the carrier synchronization may be eleiminated, but also the process gain of SS block in the system can be multiplied, by the effect of frequency hopping process of the carriers. Acording to the analysis, the simply constructed MODEN can transmits ASCⅡ data of upto 2400 bps through local power distribution line of -7 dB SNR with the error rate of lower than 10^(-5) when the 36 kHz PN frequency is used. The auther also studies the maxmum allowable numbers of the MODEN unit s multiplexed on a power line under given error rates. The analisis shows, with the proposed units, upto 8 subscribers may be cdmmunicate with the error rate of less than 10^(-4) In order to verify the analisis, 10 test sets have been built; each composed of a spreader/corelator, carrier modulator and a PN generator triggered from fixed phase of power line voltage. A carefully designed mathing transformer has been used in order to assure perfect matching to power line impedance which drops sometimes down to less than 10 ohms. Pairs of carrier frequeneies for each unit have been selected from 100-150 kHz band. For the standard pairs built for the unit system measur ements, 113 kHz and 137 KHz have been used. A series of measurements have been conducted on dummy line as well as on actual commercial lines with the results fairely matched to the analytical values.

폴리에틸렌 필름 被覆과 摘心 및 遮光程度가 柴胡의 生育과 根收量에 미치는 影響

玄英權,宋昌吉,趙南棋 濟州大學校 亞熱帶農業硏究所 1998 亞熱帶農業硏究 Vol.15 No.-

This experiment was conducted to examine effects of different polyethylene film mulching, pinching methods, and shading level on growth and root yield of Bupleurum falcatum L. Plant height, leaf length, leaf width, stem diameter, root length, number of lateral roots and number of branches were fewer in a polyethylene film mulching than in a non-mulching. In a non-mulching, plant height was highest at a non-pinching and leaf length, leaf width, root length, root diameter, number of lateral roots, number of branches were greatest at the third pinching (25 Aug.) among the pinching treatments. In a polyethylene film mulching, plant height was highest at a non-mulching and leaf length, leaf width, stem diameter, root length, root diameter were greatest at the third pinching (25 Aug.) among the pinching treatments. Characteristics such as fresh aboveground weight, fresh root weight, dry aboveground weight, dry root weight were greatest in a polyethylene film mulching and total yield per 3.3㎡ was greatest in a non-mulching between polyethylene film mulching and non-mulching. Root yield in a non-mulching was two fold greater than in a polyethylene film mulching, and in a non-mulching, was much greater at the third-pinching (25 Aug.) among the pinching treatments. As the shading level was increased from 0 to 90%, plant height was increased from 83.4 to 100.3cm. Stem diameter, root length, and root diameter were decreased with the increased shading level. Fresh aboveground and root weights were decreased as shading level was increased.

away에 대한 의미자질분석적 접근

권용현 대한언어학회 2004 언어학 Vol.12 No.1

This paper aims to explore how spatial movement, temporal distance, gradual change, and continuous property, which the term away generally means, are linked, rather than they are semantically independent of each other. The four meanings are found to have the semantic distinctive features [+DEPARTURE, -DESTINATION] in common. The additional feature [+GRADUALNESS] is derived from the two distinctive features when a verb has the semantic feature [+LOSS], and another additional feature [+CONTINUATION] results from the interaction of the two distinctive features when the semantic features [MOVE, LOSS] of the relevant verb are neutral in their values. And in this case, a certain syntactic constraint is needed so that spatial movement and continuous property may be distinguished. Furthermore, the paper reveals that the two derived features [+GRADUALNESS] and [+CONTINUATION] are not intrinsically different. They are exactly the same except that the feature [+GRADUALNESS] appears only with the so-called loss verb. Another finding is that the natural combination of away and at in the away-at construction stems from the fact that the semantic features of e two terms fit in with each other.

치성낭종으로부터 유래된 편평상피세포암종 : Report of a Case & Review of Literatures

권혁진,현재훈,박형국,김용각 大韓顎顔面成形再建外科學會 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.2

Odontogenic cysts are relatively common pathologic lesions found in the oral and perioral structures, but the case of squamous cell carcinoma arising from those cysts are very uncommon. After first reported of that case in 1889 by Herman, Schwimmer collected 56 cases of previously reported squamous cell carcinoma arising in residual odontogenic cyst during about past one century. More than 60% of cases of carcinoma developing in odontogenic cysts arising in inflammatory periapical or residual cyst, and these tumors are usually well-differentiated with relatively good prognosis, and often are diagnosed as benign lesion in radiographic or clinical examination, therefore definitive diagnosis must be made by histologic examintation. We report a case and review the literatures, in our case, 78-year old woman were clinically and radiographically diagnosed as residual odontogenic cyst. But in histologic examination after enucleation of lesion, mass of squamous cell carinoma were observed, but in other area, typical cyst wall and lining epithelium were observed. And in some area, carcinoma in situ and invading squamous cell carcinoma into the lining epithlium were also observed.

상태천이회로의 최소 소비전력화를 위한 상태할당에 대해서

권용진,이윤현 한국항공대학교 1995 論文集 Vol.33 No.-

CMOS 동기식 상태천이회로의 각 상태에 대한 상태 코드 할당이 유일하게 정하여 지지 않는 점에 착안하여, 천이가 발생하는 모든 상태사이에 Hamming거리가 1인 상태 코드를 할당하는 상태 할당 수법을 제한한다. 이 방법은 상태간의 천이에 발생하는 부하용량의 충방전에 의한 소비 전력을 최소화하는 상태 할당을 제공한다. 어를 위한 알고리즘을 제안하고 예를 통해서 본 방법의 유효성을 제시한다. 이 방법은 소비전력을 감소시킬 목적으로 제안되는 상태 할당의 기준으로써의 역할을 할 수 있을 것이다. 마지막 부분에 본 논문의 결과를 정리하고, 앞으로의 과제를 논의한다. A method of state assignment for CMOS synchronous finite state machines is described, which is effective for minimizing power dissipation in flip-flops. The method is based on a model that power dissipation in flip-flops is assumed to be proportional to average frequency of flip-flops' output states change. The minimum state code assignment obtained in this method is such that the Hamming distance of state codes, for a pair of states with a transition, is one. A minimum algorithm for the state code assignment is described along with examples. Results of this method becomes a criterion of state code assignment for reducing power dissipation of CMOS circuits. Finally, the topics in this paper are overviewed and several future problems are discussed.

複素 雙人力 記述函數를 이용한 制御系의 應答速度 補償에 관한 硏究

권세현,조용갑,박양수,최부귀 東亞大學校 附設 情報通信硏究所 1995 情報通信硏究所論文誌 Vol.3 No.1

The technique for the synthesis of the dual-input describing function(DIDF) is introduced here and the construction of a non-linear electronic compensator(N-L-E-C) based on this technique is proposed. The above non-linear network is used to compensate linear and non-linear systems for instability,speed of response, limit cycle and the static accuracy.

정상교합자의 치열궁 형태

권용철,성정옥,권오원,성재현 대한치과교정학회 1989 대한치과교정학회지 Vol.19 No.1

This study was designed to investigate dental arch shapes buccally and lingually at Bracket Level of Koreans. This involved studying 63 inviduals (37 males, 26 females) with normal occlusion ranging in age from 17 to 24 yesrs old. The landmarks were digitized and measurements and statistical analysis were performed by NEC 9801 V-M computer. The Results were as Follows: Bicanine width, Bipremolar width and Bimolar width were larger in males than in females. Buccal and lingual arch form and coordination form were obtained by NEC 9801 V-M computer. The parabolic equations which represents buccal and lingual arch form were obtained.

초등학교 학생의 체육 특기·적성활동 만족도에 관한 조사 연구

현승권,이용훈 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.5

This study was to prove how activity of special ability and aptitude of physical education in elementary schools influences on contentment, The target group for this research was the on including 840 elementary school boys and girls in Seoul area. And the actual analysis data were based on 805 boy and girls valid papers for questions(questionnaire)except incorrectly answering papers. In this research, the method through the papers for the question(questionnaire)was used as a measuring instrument, consisting of the area of the participation, the Degree of the participation, and satisfaction. The papers of the questions (questionnaire)filled in only correctly were used as the basic data, but excepting them filled in incorrect-double and no answering, The valid sample data were processed with a coding system throughout the guidance of the coding, The coded data were computerized separately, and processed in accordance with the purpose of analysis, using the program for analysis, SPSS Windows 10.0 Version in the computer system. The analysis methods used for analysing various data in this research were T-test and standard multiple regression analysis. The followings were the results acquired through the mentioned above methods, process, and data analysis. The first, there were difference in the satisfaction according to the features of the social population statistics in school years. The second, there were differences in the satisfaction according to the area of the participation. The third, the degree of participation had an effect on contentment.

대나무 섬유소를 이용한 섬유보강 콘크리트의 역학적 특성

류현기,권용주,신상용 忠州大學校 2009 한국교통대학교 논문집 Vol.44 No.-

This study is a experiment on the mechanical properties of concrete according to the fiber additional quantity of bamboo. The experiment and analysis results are as the following. The slump as a quality of the concrete not to harden showed to decrease more remarkably for a slump value than the plain according to the increment of cellulose additional rate. Air quantity showed to increase only in 0.2% fiber additional rate and to get out of KS allowable error of bad air content in 0.4% and 0.6%, and capacity mass by unit showed a reverse tendency against air quantity according to the change of cellulose additional quantity. Compression intensity as a quality of hardening concrete showed collectively a tendency to decrease in the remnant past days except only 0.6% at the standard past day 愀8 and the initial 3 days. Pulling intensity showed to increase more than the plain in all past days according to the change of fiber additional quantity of bamboo, and bending intensity also showed to be higher revelation intensity than the plain in the measurement result at the standard past day 28. In the result of length change rate, we can find the bigger the cellulose additional rate as a special quality increased, the more it decreased according to the pass of the past day.