http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
CR-39 플라스틱飛跡檢出器에 의한 ^7Li(p, ^4He)^4He 核反應의 斷面積 測定
姜榮浩,安燦基,金道聖 慶北大學校 物理化學硏究所 1984 硏究論文集 Vol.5 No.-
The Li(p, ^4He)^4He reaction is used for in searches of universal abundance of Li, nuclear energy states of ^8Be, and the final step of p-p fusion cycle. In this work, we have detected and identified ^3He and ^4He from the ^6Li(p, ^3He)^4He reaction and ^4He from the ^7Li(p, ^4He)^4He reaction by the energy dependence of the etch pit diameter of the chemically etched tracks in CR-39. The target was 12㎍/㎠ thin film of natural lithium evaporated on the 10㎍/㎠ carbon backing. The target thickness was measured by Rutherford scattering of proton particles. For proton energies between 148keV and 462keV, differential cross section, angular distribution, and total cross section were measured. The results were compared with the previous measurements and Gamow-Diagram.
강경문,김기찬,정호중 고신대학교의과대학 2007 고신대학교 의과대학 학술지 Vol.22 No.2
Objective: To identify trends in the epidemiologic and injury data of person with traumatic spinal cord injury (SCI). Method: Review of medical records of 312 patients with traumatic spinal cord injury from 1996 to 2005 at the four university hospitals and one training hospital in Busan was performed. The epidemiologic informations of this study were compared to those of the past study conducted between 1986-1993 and 1996-2005. Results: Average age(42.8) at injury was rised. Male-to-female ratio was 3.5:1, the population of males has decreased significantly in recent years(1996-2005). The leading cause of traumatic SCI was traffic accident. Tetraplegia accounted for 52.2% of all traumatic SCI, 47.8% were paraplegia. Complete injury decreased compared to the past occupying 41% of all the injury while tetraplegia increased. Traumatic spinal cord injury occured most commonly in August, summer, the time of 6 A.M to midday and on Saturday. Conclusion: This study showing the recent characteristics of traumatic SCI in Busan revealed increase in the average age at injury, the rate of females and incomplete injury. The most frequent time of onset was from 6 AM to midday.
강형구,이종호,안광희,이충호,박찬원 江原大學校 産業技術硏究所 1997 産業技術硏究 Vol.17 No.-
A smart pressure measurement system is described, which provides a precise A/D conversion and is highly suitable for communication with microprocessors. In order to avoid unstable problems of remote pressure sensing we have developed a new interface board which performs the A/D conversion and smart signal processing of the measured pressure data Serial communication software which is based on ASCII code commands is also developed to process initial setup an calibration functions as well as multi-drop communication with PC. The test and evaluation of the proposed system has been shown as having the better performance compared to the other types of existing pressure measuring systems and will give good applications to the industrial use where a highly precision remote sensing is needed.
Back-Propagation Algorithm 상에서의 성능에 미치는 Parameters 분석에 관한 연구
강수연,박찬호,이현수 慶熙大學校 1994 論文集 Vol.23 No.-
신경망에서 가장 많이 사용되고 있는 알고리즘 중의 하나가 역전파(Back-Propagation) 알고리즘이다. 역전파 알고리즘에서 문제해결에 본질적인 영향을 주는 몇가지 요인들이 존재한다. 본 연구에서는 이 몇가지 요인들이 각각의 응용 문제의 해를 얻는데 미치는 영향을 시뮬레이션 결과를 통해 알아보고 이를 분석및 고찰 하였다. 고려 대상의 요인들로써는 learning rate, momentum, weight 초기값, 은닉 유니트수를 들 수 있다. 응용 문제 대상은 XOR 문제와 8*8 dot alphanumeric font 학습으로 하였다. Back-Propagation is one of algorithms that are currently used in neural network. It has some factors that basically affect on solving problems. On this paper, we analyze and investigate several learning parameters that effect on solutions of each application problems through simulation result. Considered factors are learning rate, momentum, initial weight values and the number of hidden units. Applied problems are XOR learning and 8*8 dot alphanumeric font learning.
CR-39 플라스틱飛跡檢出器에 의한 ^7Li(p, ^4He)^4He 核反應의 斷面積 測定
姜榮浩,安燦基,金道聖 慶北大學校 1984 論文集 Vol.37 No.-
The ^7Li(p,^4He)^4He reaction is used for in searches of universal abundance of Li, nuclear energy stages of ^8Be, and final step of p-p fusion cycle. In this work, we have detected and identified ^3He and ^4He from the ^6Li(p,^3He)^4He reaction and ^4He from the ^7Li(p,^4He)^4He reaction by the energy dependence of the etch pit diameter of the chemically etched tracks in CR-39. The target was 12㎍/㎠ thin film of natural lithium evaporated in the 10㎛/㎠ carbon backing. The target thickness was measured by Rutherford scattering of proton particles. For proton energies between 148keV and 462keV, differential cross section, angular distribution, and total cross section were measured. The results were compared with the previous measurements and Gamow-Diagram.
강민제,부창진,김호찬,고영수 제주대학교 공과대학 첨단기술연구소 2005 尖端技術硏究所論文集 Vol.16 No.2
In this paper, a methodology has been proposed according to which, after carrying out a set of soil's resistivity measurements, one can compute the parameters of the multilayer earth structure using a genetic algorithm(GA). The results provided by the GA constitute the indispensable data that can be used in circuital or field simulations of grounding systems. The methodology allows to proceed toward a very efficient simulation of the grounding system and an accurate calculation of potential on the ground's surface.
광조형 시스템의 정밀조형을 위한 지지대 자동 생성 시스템 개발
강혁준,이형국,김효찬 동의공업대학 2000 論文集 Vol.26 No.1
Support structures are used to support a component during building process and must be removed once the building is complete. For precise building this paper specified types of support structures by means of geometry characteristics. They are point, line and area. And found a new algorithm for detecting geometries which need support structures. For easy of removing support structure teeth profile generation and interferences avoidance algorithm was studied.
부찬혁,강창익,김호찬 제주대학교 공과대학 첨단기술연구소 2003 尖端技術硏究所論文集 Vol.14 No.2
The control objective in hard disk drives is to move head as fast as possible to target track and position the head over the center of target track in the presence of external disturbances. The external shock or disk clamping error in manufacturing process causes the disk center to deviate from the disk rotation center. The disk shift acts on control system as disturbance and degrades severely the performance of disk drives. In this paper. we present a new controller that compensates for the periodic disturbance very fast. 'The disturbance compensator is arranged in parallel with the state feedback controller. To avoid the interference with the state feedback controller. the compensator creates compensation signal without feedhack of system output until steady state. Finally, in order to demonstrate the superior performance of the proposed compensator. we present some simulation results using a matlab.
경제적 타당성 분석을 통한 나대지 발생원인 규명에 관한 연구 : 일산신도시를 중심으로
김찬호,강지원 중앙대학교 건설환경연구소 2000 環境科學硏究 Vol.11 No.2
The aim of this paper is to analyze the cause of occurrence of undeveloped land using the method of economic feasibility analysis. This research is composed of three steps. The first step is to study the papers about the method of economic feasibility analysis. The second step is to select sites for case study and to presume the sale area of case study sites assuming maximum capacity-rate. The third step is to analyze the profitability of each case study sites. This paper finds that all case study sites show low profitability in present condition. The major factor of low profitability is a low rate of sale in lots. It means that high profitability needs a high rate of sale in lots and a high rate of sale in lots is due to low sales prices. The increase of sale in lots rate needs low price of sale in lots by the discount of land purchase price. This paper suggests an alternative for low price of sale in lots. The alternative is to discount purchase price of land.