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순천향대학교 Campus의 실내 및 실외 미세먼지(PM10) 농도 분포에 관한 연구
엄호석,장세연,이새롬,유홍진 순천향대학교 부설 산업기술연구소 2009 순천향 산업기술연구소논문집 Vol.19 No.1
In this study, indoor and outdoor PM10 concentrations were investigated at Soonchunhyang University campus. The outdoor concentrations of PM10 were below the regulation standards, except some places. In some buildings, the indoor concentrations of PM10 were slightly above the regulation standards.
류영규,윤호선,조현숙,염흥열 순천향대학교 부설 산업기술연구소 1999 순천향 산업기술연구소논문집 Vol.5 No.2
방송에서의 제한 수신 시스템 (CAS) 은 모든 수신자에게 방송 정보를 수신토록 하는 것이 아니라 수신 권한(Entitlement) 이 있는 수신자만이 특정 방송 채널의 수신을 가능케 하는 시스템이다. 비용의 절감. 세계 시장 규모의 확대, 장비의 호환성 등의 이유 때문에 각 나라뿐만 아니라, 국제적 표준안을 규정 및 연구해가고 있다. 본고에서는 OPIMA, ARIB, DVB, ETSI, ITU에서 사용된 방송용 한정 액세스의 표준화를 동향을 살펴본다.
박동규,황유동 순천향대학교 부설 산업기술연구소 2000 순천향 산업기술연구소논문집 Vol.6 No.2
In this paper, we develop the POS System using distributed object techniques. The POS System was developed by using Inprise MIDAS and distributed objects techniques to enhance performance. The POS System developed in this paper, has advantages of management for shop which is remote connected by network. The effectiveness of developed the POS System is Proved by applying them to the shop and checking their performance.
Tandem 기술을 이용한 비대칭 다단 결합선로 결합기 설계
이대웅,안달 순천향대학교 부설 산업기술연구소 2015 순천향 산업기술연구소논문집 Vol.21 No.2
In this paper, we propose a new multi-section asymmetric directional coupler with tandem type method on the tight coupling section. It is design and simulation for coupler has –3dB coupling coefficient. The propose asymmetric multi-section directional coupler is consist of six coupled lines including coupled section with tandem technique. Its result has –3dB ± 1dB in 0.5GHz∼3GHz, and fractional bandwidth of coupler is 142.85%. And also, it has an advantage in insertion loss compare than conventional tandem coupler structure.
건물내 개인 휴대통신을 위한 순천향대학교 공과대학 건물의 전자파 감쇄특성
손태호 순천향대학교 부설 산업기술연구소 1997 순천향 산업기술연구소논문집 Vol.3 No.1
It is important to predict wave propagation of inside building for the simulation of wireless LAN and PCS(Personal Communication Service) This paper presents propagation prediction model by ray tracing and UTD(Uniform Geometrical Theory of Diffraction) technique in multi-floored building. Received power iscalculated by ray tracing technique method. The UTD is adapted to be more exactly predicted by the consideration of diffraction fields generated at wall edge. To calculate floor attenuation on multi-floor building, the FAF(Floor Attenuation Factor) is used. Using the derived formula, propagation losses for a engineering center of Soonchunhyang university have been investigated theoretocally and compared with measured results.
순천향대학교의 실내 초극미세먼지(PM1) 농도 분포에 관한 연구
한수진,유홍진 순천향대학교 부설 산업기술연구소 2016 순천향 산업기술연구소논문집 Vol.22 No.1
In this study, indoor PM1 concentrations were investigated at some buildings of Soonchunhyang University. The highest PM1 concentration(0.07mg/m3) was detected at Engineering Office due to official activities by students and professors at limited space. The average PM1 concentrations at each building were as follows : SRC > Engineering building > Student building > Library > Unitopia 2020.
김승우 순천향대학교 부설 산업기술연구소 1996 순천향 산업기술연구소논문집 Vol.2 No.2
This paper proposes an elliptical world-modeling method in order to secure the safety of the mobile robot from the unreliability of the ultrasonic sensors and estimate the lateral orientation of the detected objects. This method is advantageous because the total amount of data that the robot utilizes is reduced when old and new data is clustered during each sensing period and also because the objects in the environment can be recognized almost exactly. This paper also proposes a new local path planning algorithm which is divided into four different situations and guides the robot through the safe local path using data collected in elliptical from. This algorithm can help the AMR navigate by allowing it to sum up the virtual vector forces made from the ellipses in order to select a safe subgoal. This local path planning method using the elliptical world model has been proved by several navigation experiments.
치과 진료시에 적용되는 접합기술 연구(I) : 치과용 스테인리스강 크라운에 접합된 직접용 Composite Resin과 간접용 Composite Resin의 미세조직 비교 관찰
김광수,김재민 순천향대학교 부설 산업기술연구소 2014 순천향 산업기술연구소논문집 Vol.20 No.1
This study was performed to compare the microstructures of the bondings of stainless steel crown/direct type composite resin with stainless steel crown/indirect type composite resin. Four groups of bonding conditions were prepared. Two groups of bonding conditions were made by the indirect type composite resin system(TE-SE) and the other two groups were made by the direct type composite resin system(TE-ONE). The extensive microstructural characterization was carried out using stereoscope, optical and scanning electron microscope. The microstructural evaluation indicated that there were sound and unsound bonds for TE-SE group. While there was no unsound bond for the TE-ONE group in indirect type composite resin system. The unsound bond for the TE-SE resin might be the reason for the thicker application of primer bond. These unsound bond might affect the poor bonding properties. It was also found that indirect composite resin contains less amount of pores in resin.
강준영,정민채 순천향대학교 부설 산업기술연구소 2021 순천향 산업기술연구소논문집 Vol.27 No.2
본 논문에서는 5G기술의 발전에 따라 필연적으로 필요한 5G기지국에 대해 다루고 있다. 앞으로 더 많은 기지국이 필요하게 되고 어떻게 더 효율적으로 신호를 공급하기 위해 기지국을 몇 개나 어떻게 배치해야 하는지 시뮬레이션 하는 프로그램을 제작하였다. 순천향대학교 지도대로 지역을 설정하고 건물을 배치해서 모델링하고 여기에 2.5m 간격으로 사용자를 배치되었다. 사용자들은 경로손실 간섭을 계산해서 SNR값을 구하고 채널용량을 계산한다. 또한 각 사용자들의 SNR값을 그림으로 나타내어 결과를 한눈에 보고 수정할 수 있게 만들었다. 사용자들의 채널용량평균을 구하고 하위 5%의 엣지유저들의 평균을 구해서 신호의 공정성을 계산해 가장 채널용량이 높은 경우 신호공정성이 높은 경우를 구할 수 있게 구성하였다. 또한 CDF그래프를 이용해서 신호공정성을 파악할 수 있다.
반도체 및 LCD photo 공정에서 발생되는 폐chemical의 재자원화 기술개발
이윤배,유홍진 순천향대학교 부설 산업기술연구소 2001 순천향 산업기술연구소논문집 Vol.7 No.2
In this study, a design approach was suggested to the recovery and recycling of waste chemicals produced from semiconductor and LCD photo process. For this purpose, the process simulation of a distillation tower was performed and basic engineering data for the separation of BDG & MEA form waste chemicals were obtained. Also, composition of waste chemicals was studied by Karl-Fischer water content analyzer and GC-MS.