http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
韓末 日帝의 土地侵奪에 관한 一硏究 : -Focused on Yongjong Island case from 1905 to 1906- -1905.6 年間의 永宗島事例를 中心으로-
康鎭甲 한양대학교 한국학연구소 1986 韓國學論集 Vol.10 No.-
This is a case study on Japan's land-dispossession of Korea during the late Period of the Lee Dynasty. In 1905 a Japanese, Takekawa(武川 盛次) wanted to get the cultivating right to the virgin soil of Yongjong Island which is off the coast of Inchon. Because the virgin soil of Yongjong Island was not fixed on it's possession, it was necessary to have the Korean Government's permission to culitivate it. At that time, the Korean Government did not give approval to the foreigners to cult- ivate the virgin soil. Thereafter, Takekawa could not obtain the right unless he did so under the name of a Korean. So he took the the right of cultivation in the names of Korean, Hwang Seog-weon(黃錫元) and Lee chimyong(李致明 ) in April, 1905. And on the pretext of the right he steadily dispossessed the surrounding private land. In June, 1905 he founded Kwon-up Ltd., Co.(勸業合資會社) and plann- ed to transfer the registration titled by Koreans to his own. At last, Yongjong Islanders petitoned the Korean Government to have the lost land taken back. The Government started negotiating with the Japanese Residency-General(統監府) from June, 1906. The Residency-General finally requested Takegawa to return the land to the Islanders. This historiacl highlight suggested that the Islander's strenuous struggle prevent even the imperialist from dispossessing their private land.
이용중,강진갑,이형우 한국기계가공학회 2006 한국기계가공학회지 Vol.5 No.2
In the consideration of the problem occurred by certain return bender brazing welding works that depend only on handworks, the automatization of the whole production line is impossible due to the high dependency of skillful workers. In addition, it is difficult to establish a standardization due to the various heat exchanger model and irregular amount of orders, and the fault reduction is also impossible due to the severe difference in brazing conditions. It is necessary to develop a method, which quantitively analyzes the problem existed in this manual brazing welding of return benders and technically solves that problem, and to lead the improvement of the productivity and cost reduction in order to increase the business competitive power. Then, this will contribute the technical development of automatic welding for Korea's heat exchanger businesses. Thus, this study develops an automatic technology, which automatically controls the flame strength using digital control methods, for various models and produces a sample model. It is possible to increase the productivity and produce uniformed and qualified products by solving the problem existed in manual processes using the developed automatic return bender brazing system. In addition, the brazing condition can be automatically controlled according to the model and line speed, and such an economical operation can reduce the production cost. The developed system is expected to future applications not only heat exchangers in the field of refrigeration and air conditioning, but also other various industrial fields that apply heat exchangers, such as car and boiler industries.
유연생산 시스템 구축을 위한 공작물 자동교환 유닛의 상하 이송 기구 설계에 관한 연구(파트 1)
박후명(Hoo-Myung Park),강진갑(Jin-Kab Kang),이용중(Yong-Joong Lee),하만경(Man-Kyung Ha) 한국기계가공학회 2008 한국기계가공학회지 Vol.7 No.2
The objective of this study is to develop an automatic object changer unit to improve processing problems existed in the conventional horizontal machining center. In order to perform this objective, a upward and downward traverse unit in which a unit that consists of a motor and reducer, chain and sprocket wheel, and upper and lower base employed in an automatic object changer unit performs sliding contact motion in a frame was designed. To achieve this design, constraint conditions for the upward and downward traverse unit first designed. Then, an operation mechanism was designed and that was introduced as a sum of kinetic energy for the sprocket wheel and upper and lower base based on the moment of inertia, which is the kinetic energy of the converted upward and downward traverse unit in the side of the reducer. In addition, The work required to rotate the converted upward and downward traverse unit in the side of the reducer by one revolution can be calculated using the sum of work that is required in the sprocket wheel and upper and lower base that is a part of the upward and downward traverse unit. Furthermore, the converted equation of motion in the side of the motor can be introduced using the equation of motion using the converted upward and downward traverse unit in the side of the motor. Then, Then, a proper motor can be determined using predetermined specifications employed in the motor and several parameters in the upward and downward traverse unit in order to verify such predetermined specifications. Also, a design of a horizontal traverse unit that performs sliding motion on a upward and downward traverse unit and simulation that verifies the results of this design are required as a future study.
ED-Drilling의 절삭속도와 전극마모 특성에 관한 연구
최종연(Jong-Yeun Choi),강진갑(Jin-Gap Kang) 산업기술교육훈련학회 2007 산업기술연구논문지 (JITR) Vol.12 No.1
This paper describes the machining characteristics of the sintered carbide and die steel(STD-11) by electric discharge drilling with various tubular electrodes. Electrical discharge machining(EDM) removes material form the workpiece by a series of electrical sparks that cause localized temperatures high enough to melt or vapourize the metal in the vicinity of the charge. In the experiment. four types of electrode which have different diameter are used with the application of continuous direct current and axial electrode feed. The controlled factors include the dimension of the electrode. In drilling by EDM, the dielectric flushed down the interior of the rotating tube electrode, in order to order to facilitate the removal of machining debris from the hole. The thicker the workpiece and the lager the diameter of the tubular electrode are, the lower the material removal rate is. The thicker the workpiece and the smaller the diameter of the tubular electrode are, the higher the electrode wear ratio is. The material removal rate and electrode wear ratio of die steel are 3-4 times those of the sintered carbide.