[의정인터뷰] 새롭게 변화하는 열린 의회로 거듭날 것 : 이용범 인천시의회 의장

이용범,김광모 한국자치학회 2019 월간 공공정책 Vol.164 No.-

북한 채소 생산현황과 종자개발 협력 방안

이용범,이용범 한국종자연구회 2018 한국종자연구회 심포지엄 Vol.2018 No.12

군 특수차량용 인휠 드라이브 기어박스의 가속 내구성시험에 관한 연구

이용범,이용범,이기천,이종직,임신열,김우진,김광민 유공압건설기계학회 2022 드라이브·컨트롤 Vol.19 No.3

The in-wheel drive gearbox for military special vehicles converts the high-speed & low-torque output generated by the electric servomotor, into low-speed & high-torque mechanical power. As the vehicle is remotely maneuvered in mountainous terrain, wet fields, rough terrain, etc., the gearbox must generate a maximum input speed exceeding 5,000 rpm, a maximum torque of 245 Nm, and MTBF of 9,600 km. The purpose of this study was to analyze the failure mode of the gearbox, to ensure the durability of the in-wheel drive gearbox. Also, the field load test data of the vehicle was analyzed, the acceleration durability test standards were established, the acceleration durability test was conducted, and the durability test results were analyzed as well.

북한 채소 생산현황과 종자개발 협력 방안

이용범,이용범 한국종자연구회 2018 종자과학과 산업 Vol.14 No.4

고정밀 토크 미터 개발에 관한 연구

이용범,이기천,강보식,이종직,김태석 대한기계학회 2019 大韓機械學會論文集A Vol.43 No.11

회전하는 축의 동력을 측정하기 위해서는 토크 미터를 이용하여 토크와 회전속도를 측정하여야 한다. 입력 피니언과 축력 기어로 이루어진 고정밀 PTO 기어박스는 높은 효율로 동력 손실의 거의 없는 상태이다. 여러 회사에서 제작된 고정밀 PTO 기어박스들의 성능 차이를 확인하기 위해서는 제품의 미소 손실 차이를 분별할 수 있는 수준의 정확도가 보장된 토크 미터가 요구되었다. 그러나 기존의 토크 미터는 큰 노이즈로 인해서 측정 오차가 커서 미소한 성능 변화를 확인할 수 없음은 물론이고, 또한 효율이 100%를 초과하는 경우가 발생했다. 본 연구는 토크 미터를 검교정을 할 때 정적인 상태에서만 토크 미터를 보정하는 문제와 매우 낮은 전압 또는 전류를 송신하는 과정에서 케이블을 타고 유입되는 선간 노이즈 문제의 특성을 분석하여, 일차적으로 데이터 cut-off형 소프트웨어 노이즈 필터링과 이차적으로 고주파 및 저주파 대역의 하드웨어 노이즈 필터로 필터링한 측정한 토크 데이터를 각각 분석하였다. 최종적으로 기존 변압기 방식의 전압 전송 방법의 한계를 극복하기 위해서 디지털 펄스 전송 방식의 토크 미터를 개발하여 높은 수준의 정밀도를 확보한 실험 결과를 제시하였다. Torque and rotational speed are measured using a torque meter to measure the power of a rotating shaft. A high-precision power take-off (PTO) gearbox consisting of an input pinion and axial gear achieves high efficiency with little power loss. As such, a torque meter with a degree of accuracy sufficient to discern the small power loss of the product was required to check the performance difference between high-precision PTO gearboxes manufactured by several companies. However, conventional torque meters are not able to detect small performance changes due to large measurement errors that result from noise; moreover, the system efficiency of gearboxes measured with these torque meters can exceed 100 due to the error. This study analyzed the problem characteristics of calibrating torque meters under only static conditions and the problem of interline noise entering the cable in the process of transmitting either low voltage or current. Furthermore, we analyzed the torque data filtered by a data cut-off type software noise filter as well as high and low frequency hardware noise filters. Finally, to overcome the limitations of the voltage transfer of the conventional transformer method, a torque meter with a digital pulse transmission method was developed, and the experimental results, which demonstrated a high level of precision, were presented.

한국 무속 굿의 음악 담당자 : 유형과 역할, 조직을 중심으로

이용범 순천향대학교 2011 순천향 인문과학논총 Vol.30 No.-

한국 무속 의례에서 음악은 필수적인 요소이다. 그런데 한국 무속의 대표 의례인 굿에서 굿 절차의 진행자와 굿 음악 담당자가 나뉜다. 굿의 진행자로 알려진 무당은 기본적으로 음악에 관여하지 않으며, 별도의 음악 담당자가 음악을 맡는다. 술맞이 할머니, 장구 할머니, 기대, 남자 악사 등이 바로 굿의 음악 담당자이다. 이들은 굿에서 음악 담당자 이상의 역할을 한다. 또한 굿 음악 담당자의 대표적인 존재는 남자 악사인데, 이들을 중심으로 神廳으로 통칭되는 무속 조직이 만들어져 무속의 전승과 무속계의 권익보호에 기여하였다. 기존에 한국 무속을 바라보는 시각은 무당 중심적이었다. 한국 무속 의례에서 음악이 필수적이며 굿에서 음악 담담자가 차지하는 위상과 역할을 고려할 때, 무당 중심적인 시각에서 벗어나 보다 포괄적인 시각에서 한국 무속에 접근하는 것이 가능하다. Music is an essential element in Korean shamanism rituals. There is a differentiation between performing ritual processes and playing ritual music in Korean shamanism rituals. Korean shamans are not basically involved in playing ritual music. There are specialists in ritual music of Korean shamanism: Sulmajihalmeoni, Janguhalmeoni, Gidae, and male ritual musicians. The representative of specialists in ritual music of Korean shamanism is a male ritual musician. Male rituals musicians have done more than playing ritual music in Korean shamanism rituals. They also formed organizations of Korean shamanism and contributed to the transmission of Korean shamanism and protecting the rights and interests of diverse members of Korean shamanism. Through the consideration of the status and roles of male ritual musicians, it is possible to approach to Korean shamanism in a more comprehensive viewpoint without dropping into a shaman-centered viewpoint.

반복적인 과배란 처치 경험이 있는 한국흑염소에서 난포 자극 및 복강경을 이용한 난포란 채취(LOPU)

이용범,이두수,조상철,신상태 韓國受精卵移植學會 2014 한국동물생명공학회지 Vol.29 No.1

Laparoscopic ovum pick-up (LOPU) is a convenient method for collecting oocytes in small ruminants. LOPU has the advantage of being a less invasive means of oocyte collection, thereby allowing for a repeated usage of the oocyte donor animals. A total of 25 Korean black goats were used in the winter season (December to February) and LOPU was applied to the goats which had been treated for superovulation more than two times during the last twelve months. Estrus was synchronized with an intravaginal insert containing 0.3 g progesterone for 10 to 12 days. Ovaries were hyperstimulated with eCG 1,000 IU oneshot, FSH with eCG (50 mg / 1,000 IU; 70 mg / 500 IU; 70 mg / 1,000 IU) oneshot or FSH multiple-shot with eCG oneshot (20 mg x 6 / 300 IU) given intramuscularly 72 h prior to LOPU. For these groups, the number of follicles (mean ± SEM) observed which developed to larger than 2 mm in diameter were 1.6 ± 2.5, 4.3 ± 3.1, 5.5 ± 4.2, 6.6 ± 2.1 and 8.8 ± 7.8, respectively. Oocytes were aspirated by using OPU needles and a vacuum pump. The overall oocyte retrieval rates were 41.4%. Oocytes were matured in TCM-199 supplemented with 10% (w/v) bovine serum albumin+ 10 μg/ml FSH+ 1 μg/ml 17β-estradiol for 27 h at 39℃ in 5% CO2 in air. Oocytes were parthenogenetically activated by ionomycin combined with 6-diethylaminopurine (6- DMAP). Total oocyte maturation and cleavage rate were 67.3% and 78.8%, respectively. In summary, LOPU is a useful oocyte collection method in Korean black goats that can provide immature oocytes for transgenesis or nuclear transfer.

紺岳山 古碑에 대하여

李龍範 동국대학교 박물관 1983 佛敎美術 Vol.7 No.-

개신교 최초의 선교사 지겐발크의 협력 선교 방법

이용범 장로회신학대학교 세계선교연구원 2001 선교와 현장 Vol.6 No.-

지열 열교환시스템 개발을 위한 지중 열유동 특성분석

이용범,강창호,이충근,성제훈,조성인,정인규,정선옥 한국농업기계학회 2005 바이오시스템공학 Vol.30 No.3

Importance of alternative energy has been increasing due to environmental issues and lack of fossil fuels. In addition, heating cost that occupies from 30 to 40% of the total production cost in the protected cultivation sector in Korea needs to be reduced for profitability and global competition. But, study on geothermal energy to solve these problems has not been activated for Korean protected cultivation. This study was conducted to develop an optimized geothermal exchange system through fundamental test of heat transfer characteristics in soil such as thermal diffusivity, changes in soil temperature during heating and cooling operations, and restorations of soil temperature after the heater was turned off. These issues were investigated using computer simulation for different depths. The simulated characteristics were evaluated through controlled tests. Simulated characteristics of heat transfer in the soil at different depths showed a reasonable agreement with the results of the controlled tests. All of computer simulation and controlled tests, soil temperatures changed at 10cm and 20cm distance from pipe. but don't change at more than 30cm distance. It means that distances of heat transfer of the soil ranged from 20 to 30 cm a day. Based on these results, the optimum spacing between adjacent heat exchange pipes and the pitch were selected as 50 and 40 cm, respectively.