不整根移秧이 水稻生育 및 收量에 미치는 影響 硏究

諸商律,李相麗 慶北大學校 1968 論文集 Vol.12 No.-

The authors studied on the effects of unarranged root transplantations rice plant for growth and products at paddy farm of Kyung Pook Univ. in 1967. The results obtained were as follows; 1) Transplanting of unarranged root gives delayed growth at each seeding dates and that about a week was delayed at the latest transplanting block.. Base parts of the unarranged roots were decayd:it was the period to absorb the nutrition at the block of arranged root while growth of unarranged root was delayed because of new root formation at 2nd and 3rd nodes. 2) Earing period was delayed but maturity was hastended at block of unarranged root, These Phenomena was derived from irregular vegetative growth and shortened maturity, the autors believed. 3) Weight of defective grain was high while straw weight was much lowered, So it is the top priority problem to arrange the root when transplanting of rice plant ofr augmentation.

[논문]군부대 이전적지가 주변토지이용에 미치는 영향

황재남,이성호 釜山大學校 都市問題硏究所 2004 都市硏究報 Vol.16 No.-

The purpose of this study is an investigation of the transferred army facilities site affecting changes land use in the surrounding area. In this study follows analysis in three steps : first, finding of the concept of what transferred site is and the present state of the transferred army facilities site ; then, finding changes of land use in the surrounding area which the transferred army facilities site affects ; finally, suggestion of the right ways how the transferred army facilities site will be developed. In the future Not only army facilities but also other facilities will be transferred in the suburbs, Therefore transferred sites will be increased. We may development many site by means of various types. In this time we should recognize not only the transferred army facilities site but also a surrounding area. Through the ideas we can make sound development and transferred sites will operate well in the city belonging that site

분산DBMS환경에서의 PLT를 이용한 회복기법

조성제 경주대학교 1998 論文集 Vol.10 No.-

Conventional KB systems suffers from poor execution speed due disk I/O bottleneck. Recently, with a drop in memory chip price and rapid development of mass storage memory chip technology, research on main memory database system has gained wide attention. This paper discusses transaction management technique in a client-server main-memory DB environment. The current techniques transfer generated log records and their data pages from the client to the server during transaction execution in the client site. The problem associated with this approach is the increased data transfer time in the network and the global synchronization is not guaranteed. In this paper, client transfers only the completed log records to the server, and resolves the problems in the current recovery techniques. In additions the server manages only the execution completed log records, it suggesting a simple recovery algorithm. Client uses system concurrency fully by acting abort action, and it suggest page unit recovery technique to reduce time that is required in the whole database.

砂耕栽培에 있어서 질소 및 칼리의 施肥水準의 오이의 生育, 收量 및 無機成分吸收에 미치는 影響

權成煥,鄭淳宰,具禹書,鄭景泰 東亞大學校 大學院 1993 大學院論文集 Vol.18 No.-

This experiment was conducted to study the effect of Nitrogen and Potassium treatment on growth, yield and content of mineral elements the results were summarized as follows; 1. Growth and Yields were more effective in N treatment with 8g per plant, were more effective in K treatment with 16 me per liter 2.Content of mineral elements in leaves were a lot of N and MG in N treatment, were a lot of P content in K treatment. 3. The content of mineral of Petiol, fruit and Xyleme sap. N and K were more contented in petiole, as the others were more contented in Xyleme sap. Ca was contented a little in fruit. 4. Absorption of water was increased in the N treatment with 8g per plants, in the K treatment with 16 me liter. The contents of chlorophyll was increased as the level of Nitrogen was increased in N treatment while, decreased on young leave in K treatment.

대기압 플라즈마에 의한 냉간압연 스테인리스 Micro-Cleaning판재의 에 관한 연구

오상훈,이성기,윤재홍,조동율,박봉규,이성규 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

Atmospheric Plasma Cleaning (APC) was studied for the residual rolling oil contaminants on the surface of cold rolled Stainless Steel after optimizing APC conditions. Electrodes were placed at a distance of 10mm, with an RF power of 220W, and line velocity of 0.5m/min. The residue left by APC was 0.78mg/m², which was less than that of the approximate 1mg/m² by other classical cleaning methods. Especially, APC combined with pre-cleaning by 550℃Nitrogen gas gave a residue of only 0.01mg/m². Cleaning effect are also improved when oxygen gas is added to the atmospheric plasma. It was confirmed by the investigation of the official Korea Chemical Analysis Center that the APC-hot nitrogen method is superior to other methods. The residual contaminants for different methods were as follow : the classical method : about 1mg/m², APC : 0.78mg/m², and APC-hot nitrogen : 0.10mg/m².

LPCD법에 의한 Tin박막의 전계 에미터 어레이 제작

조경제,이상윤,류정탁,김연보,이진호 大邱大學校 科學技術硏究所 2001 科學技術硏究 Vol.8 No.2

Using low pressure chemical vapor deposition (LPCVD), TiN thin films as field emitter array were fabricated. In this Work, a method was transfered to a substrate and the wet-etching of the silicon substrate instead of fabricated method of mold shape was using in generally but we have fabricated gated field emitter tips as using mold shape of the new method that using a side wall space structure. Following sequences such as LPCVD method of a gate electrod and gate oxide on a silicon substrate and defesited BPSG thin film as a high temperature was flowed by the mold shape of a sharpen, the TiN as a materials of emitter tips was deposited after was bounded by anodic bonding and the wet-etching of the silicon substrate by using KOII solution, the last have fabricated a gated field emitter arrays of a sharpen. These emitters were estmated by scanning electron microscopy and X-ray diffraction.

6-치환된 1,3,5-trianzine-2,4-dithiol 유도체의 반응성 연구

김재종,이용희,성대동 동아대학교 기초과학연구소 2001 基礎科學硏究論文集 Vol.18 No.1

Several 6-substituted-1,3,5- triazine-2,4-dithiol derivatives were prepared and their infrared were recorded on KBr disk. All these compounds show distinctly separate absortion bands for C-S and C-N streching. Each of these bands is split into a doublet. This is explained in terms of the existence of rotational isomers.

중소기업 신용평가 모형구축에 관한 연구 : 중소기업 신용평가표를 중심으로

洪在範,李相奭 강남대학교 사회과학연구소 1998 사회과학논총 Vol.5 No.-

ESO 기법을 이용한 외팔보의 신뢰성 기반 위상최적설계

김상락,박재용,이원구,유진식,한석영 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

This paper presents a Reliability-Based Topology Optimization (RBTO) using the Evolutionary Structural Optimization (ESO). An actual design involves uncertain conditions such as material property, operational load and dimensional variation. The Deterministic Topology Optimization (DTO) is obtained without considering of uncertainties related to the uncertainty parameters. However, the RBTO can consider the uncertainty variables because it has the probabilistic constraints, In order to determine whether the probabilistic constraint is satisfied or not, simulation techniques and approximation methods are developed, In this paper, the reliability index approach (RIA) is adopted to evaluate the probabilistic constraint, In order to apply the ESO method to the RBTO, a sensitivity number is defined as the change in the reliability index due to the removal of ith element. Numerical examples are presented to compare the DTO with the RBTO.

스테인리스강관 단주의 내력 및 거동에 관한 실험적 연구

유재희,장호주,양영성 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

This study attempts to uniform compressed test with stainless steel stub-columns, which gas corrosion resistance, fire resistance efficiency and elongation, for the use of It as structural members. Width(Diameter)-thickness ratio and steel tubular-section shape(pipe and tube) are selected experimental parameters. 0.1%off-set yielding strength was presented 4.067tf/cm², and strain at tensile strength was presented 0.734x1000000 in tensile test. 0.1%off-set yielding strength each specimen was higher than the design strength of structural members(2.4tf/cm²), and they were reached ultimate compressed strength. The results of this study can be applied to 2.4tf/cm² in KS yielding strength of stainless steel, and it can be relaxed the width(diameter)-thickness ratio limit value. And stainless steel was showed superior plastic deformation.