机构

• 长春光学精密机械与物... [1]
• 国家天文台 [1]
• 高能物理研究所 [1]

采集方式

• OAI收割 [3]

内容类型

• 期刊论文 [2]
• 会议论文 [1]

发表日期

• 2020 [1]
• 2006 [1]
• 1998 [1]

学科主题

• Astronomy ... [1]

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 On Using Inspiraling Supermassive Binary Black Holes in the PTA Frequency Band as Standard Sirens to Constrain Dark Energy 期刊论文  OAI收割 The Astrophysical Journal, 2020, 卷号: 889, 期号: 2 作者:  Yan,Changshuo;  Zhao,Wen;  Lu,Youjun   |  收藏  |  浏览/下载：29/0  |  提交时间：2020/03/10 Supermassive black holes  Gravitational waves  Gravitational wave astronomy  Dark energy  Cosmological parameters  Active galactic nuclei  Fisher's Information  Black hole physics  Pulsar timing method   An image identification system of seal with fingerprint based on CMOS image sensor (EI CONFERENCE) 会议论文  OAI收割 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Xue X.-C. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 CMOS image sensors now become increasingly competitive with respect to their CCD counterparts  while adding advantages such as no blooming  simpler driving requirements and the potential of on-chip integration of sensor  analog signal conditioning circuits  A/D converter and digital processing functions. Furthermore  CMOS sensors are the best choices for low-cost imaging systems. An image identification system based on CMOS image sensor is used to identify the seal images that include fingerprint  and then determine whether the seal is fake or not. The system consists of a color CMOS image sensor (OV2610)  a buffer memory  a CPLD  a MCU (P89C61X2)  a USB2.0 interface chip (ISP1581) and a personal computer. The CPLD implement the logic and timing of the system. The MCU and the USB2.0 interface chip deal with the communications between the images acquisition system and PC. Thus PC can send some parameters and commands to the images acquisition system and also read image data from it. The identification of the images of seal is processed by the PC. The structure and scheme of the system are discussed in detail in this paper. Several test images of seal taken by the system are also provided in the paper.   Timing analysis of Geminga with a phase cross-correlation method 期刊论文  OAI收割 CHINESE ASTRONOMY AND ASTROPHYSICS, 1998, 卷号: 22, 期号: 1, 页码: #REF! 作者:  Zhang S(张澍);  Li TB(李惕碚);  Wu M(吴枚);  Lu FJ(卢方军);  Song LM(宋黎明) 收藏  |  浏览/下载：22/0  |  提交时间：2016/04/11 pulsar  Geminga  gamma-ray source  timing parameters