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이중피복 마늘재배 시 투명P.E.필름 제거가 마늘 생육 및 수량과 잡초 발생에 미치는 영향
이재선,김인재,윤철구,안기수,김기현,남상영,김홍식,Lee, Jae-Sun,Kim, In-Jae,Youn, Cheol-Ku,Ahn, Ki-Su,Kim, Ki-Hyen,Nam, Sang-Yong,Kim, Hong-Sig 한국유기농업학회 2013 韓國有機農業學會誌 Vol.21 No.3
친환경 마늘재배농가의 엽초유인 및 제초작업에 소요되는 노동력을 절감하고 비닐피복으로 인한 비상품성 마늘의 비율을 낮추기 위하여 왕겨 등 4종의 피복재료를 이용하여 본 시험을 수행하였다. 출현기는 투명P.E.필름 피복구에서 2월 18일로 가장 빨랐으며 무피복구에서 3월 23일로 가장 늦었고, 이중피복구는 투명P.E.필름 피복구보다 다소 늦다. 지상부 생육은 관행>이중피복구>무피복 순으로 양호한 생육을 보였지만 엽초장은 짚+투명P.E.피복구와 톱밥+P.E.피복구에서 투명P.E.필름 피복보다 양호하였다. 피복재료별 잡초발생량은 검정유공P.E.필름+투명P.E.피복구에서 가장 적었고, 이중 피복구에서 48%~56%의 방제가를 보였다. 이중피복 처리에 따른 육쪽비율을 보면 짚+투명P.E.피복구에서 가장 높았고, 이중 피복구가 투명P.E.필름 피복구보다 2배 이상 육쪽비율이 높은 경향을 보였다. 지하부 특성은 투명P.E.필름 피복구에서 구경, 구고, 구중이 가장 양호하였으나 이차생장율이 가장 높았으며, 왕겨+투명P.E.피복구에서 이차생장율이 가장 낮았다. 전체수량은 투명P.E.필름 피복구에서 961kg/10a로 가장 많았지만 상품수량은 왕겨 피복구에서 848kg/10a로 가장 많았다. This experiment was conducted to clarify the effect of double layer mulching on reducing the labor required to weed control and Leaf sheath training of the garlic cultivation. Six mulching methods(non-mulching, transparent P.E., rice hull+transparent P.E., sawdust+transparent P.E., rice straw+transparent P.E., black P.E. film+ transparent P.E.) were used for the experiment, and transparent P.E film was removed on April 10. Weed occurrence was in the order of black P.E. film< transparent P.E<sawdust<rice straw<rice hull<non-mulching. Formation of secondary cloves was highest in transparent P.E mulching and lowest in rice hull. The ratio of six-cloves was highest in rice straw mulching and lowest in transparent P.E. mulching. Bulb characteristics was more favorable in transparent P.E mulching than other experimental plots but formation of secondary cloves was lowest in rice hull mulching. The yield of garlic was highest in transparent P.E. mulching, but the marketable yields was highest in rice straw mulching and rise hull mulching.
이재선,장경호,황지훈,박현찬,전준태,김유철,Lee, Jae-Sun,Chang, Kyong-Ho,Hwang, Jee-Hoon,Park, Hyun-Chan,Jeon, Jun-Tai,Kim, You-Chul 한국강구조학회 2011 韓國鋼構造學會 論文集 Vol.23 No.2
최근 강구조물의 건설이 지속적으로 증가되고 있고, 이에 따른 모니터링 시스템의 중요성이 더욱 부각되고 있는 실정이다. 강구조물의 노화로 인한 피로균열 및 부식은 강구조물의 수명저하에 가장 큰 요인이 된다. 구조물이 큰 교량의 경우에는 사람의 접근이 어렵고, 균열 측정 방법 또한 시간이 오래 걸리며, 많은 비용이 소비된다. 따라서, 초기에 균열을 발견하고 보수, 보강 작업을 수행함으로써 비용을 절감할 수 있는 모니터링 시스템의 개발이 절실히 요구된다. 본 연구에서는 강부재의 전위차법(EPDM : Electric Potential Drop Method)에 의한 모니터링 기법에 의해 쉽게 관찰되지 않는 피로균열의 발생 및 진전 상황을 추적하고 또한 잔여수명을 예측하였다. Steel structure construction is currently increasing on account of the many merits of steel structures. Due to numerous environmental factors, many cracks and extensive corrosion occur in steel structures, which cause the deterioration of the performance and life cycle of such structures. Maintenance of steel structures is thus strongly demanded, for safety control. The inspection methods that are currently being used, however, are very limited and can detect only local defects in steel structures. They also take much time to use and incur high maintenance costs. Moreover, such methods cannot be applied to huge steel structures, which men find unapproachable. They also require much time due to the need for periodic checks, and may lead to cost loss. Therefore, the development of a monitoring system that can detect defects in whole structures and can reduce the repair and strengthening costs at an early stage is very much needed. In this study, the generation and propagation of cracks were monitored via the electric-potential-drop method (EPDM).
이재선,황우준,이시형,금경수,Lee, Jae-Sun,Hwang, Woo-June,Lee, Si-Hyung,Keum, Kyeong-Su 대한한의정보학회 2008 大韓韓醫情報學會誌 Vol.14 No.1
The elementary idea of 'function-words' in Classical Chinese originates from Han dynasty. But because of the pictographic nature the methodology for 'content words' had been applied to the study on 'function words', ane the conditions had not changed until modern times. In grammar functions of the function-word syntactical, morphological in unit sentence were studied in this using the method of quantitative analysis for all the function-words appeared in ${\ll}$Hwang je nae gyung-Somun${\gg}$. In the previous studies about function word, many data were collected and analyzed diachronically. But those studies failed to examine function-words closed in connection with synchronic study. Besides, in the explain about relevant function-words also, the case which was made centering around exegetic explain was most. And in the case to explain the function-words have in unit sentence also, the explain only about some function-words is made, but the analysis about concrete function to have in syntactical system is being handled negligently. This study stands not only on the background df the traditional studies but also on the basis of the western grammar and linguistics, especially the descriptive grammar and linguistics, especially the descriptive grammar. ${\ll}$Hwang je nae gyung-Somun${\gg}$ is collect and recorded the mythology and special contents related to Daoism in the side of contents as what was written on the basis of the historical consciousness of individual in contents regardless of compilation system. The purpose of this study is to clarify how the role and function of fuction-words are being made in the composition of unit sentence which appeard in ${\ll}$Hwang je nae gyung-Somun${\gg}$ through synchronic grammar system.
이재선 ( Jae Sun Lee ) 단국대학교 정책과학연구소 2012 정책과학연구 Vol.21 No.2
Fundamental anything which a democracy is operated? It will be election of the representative through votes of an elector. By the way, this election system is for it to distort clearly a democracy if there is a defect to expression of representativeness. Turnout time passes, and to become lower makes a large issue in representativeness. And we cannot force that citizens vote under the democracy. But we will have toward more a lot of interests through elections on a political process if we let you feel ``the psychological impulsion``. This ``psychological impulsion`` is felt if they exchange final ballot system not being now a single ballot system in presidential election and congressman elections. A final ballot system is contributed to the political socialization of citizens too. The worry that primary voting is to support later whom in second ballot can get a gauge ruminating on once about politics more. A final ballot system has in own way a disadvantage. But it is surely a necessary system in spite of these disadvantages in the current Korean election behaviors.
필라테스 움직임 원리에 근거한 레스터 호튼 테크닉 동작 분석
이재선 ( Lee Jae Sun ),김현남 ( Kim Hyun Nam ) 한국무용예술학회 2014 무용예술학연구 Vol.51 No.6
The purpose of this study was to shed new light on the aspects of the Lester Horton Technique by analyzing its body therapy characteristics based on the principles of Pilates. This study explored the theory of Pilates and Horton’s life and achievement through literature analysis. This study analyzed major movements suggested in the Horton Technique textbooks in terms of the movement principles used in Pilates. Findings revealed three characteristics of the Horton Technique. First, it emphasized the importance of body alignment and flexibility of the pelvic and the torso. Second, the Horton Technique, as with Pilates, emphasized the importance of the core, and all of its movements concentrated on the core training. Third, the Horton Technique included in its movements up to three principles of Pilates. These results proved that the Horton technique, widely adopting the principles of Pilates, could stretch and strengthen all parts of the body.