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浏览/检索结果: 共33条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 Search for Higgs boson pair production in the two bottom quarks plus two photons final state in p p collisions at √{s }=13 TeV with the ATLAS detector 期刊论文  OAI收割 Physical Review D, Physical Review D, 2022, 2022, 卷号: 106, 106, 期号: 5, 页码: 052001, 052001 作者:  ATLAS Collaboration   |  收藏  |  浏览/下载：10/0  |  提交时间：2023/11/09 Physics - Data Analysis  Physics - Data Analysis  Statistics and Probability  High Energy Physics - Experiment  Statistics - Applications  Statistics and Probability  High Energy Physics - Experiment  Statistics - Applications   Construction and simulation bias study of the guide Tube Calibration System for JUNO 期刊论文  OAI收割 JOURNAL OF INSTRUMENTATION, 2021, 卷号: 16, 期号: 7 作者:  Guo, YH;  Zhu, KF;  Zhang, QM;  Zhang, FY;  Meng, Y   |  收藏  |  浏览/下载：26/0  |  提交时间：2023/03/27 Overall mechanics design (support structures and materials  vibration analysis etc)  Detector design and construction technologies and materials  Detector alignment and calibration methods (lasers  sources  particle-beams)  Detector control systems (detector and experiment mon-itoring and slow-control systems  architecture  hardware  algorithms  databases)   Modelling predicts tomatoes can be bigger and sweeter if biophysical factors and transmembrane transports are fine-tuned during fruit development 期刊论文  OAI收割 NEW PHYTOLOGIST, 2021, 卷号: 230, 期号: 4, 页码: 1489-1502 作者:  Chen, Jinliang;  Beauvoit, Bertrand;  Genard, Michel;  Colombie, Sophie;  Moing, Annick   |  收藏  |  浏览/下载：20/0  |  提交时间：2023/02/24 fruit growth  fruit quality  global sensitivity analysis  metabolic modeling  model integration  primary metabolism  virtual experiment  water and carbon flux   3D打印技术及其在小型分析器件设计制作中的应用 学位论文  OAI收割 北京: 中国科学院生态环境研究中心, 2020 作者:  王丁一   |  收藏  |  浏览/下载：50/0  |  提交时间：2021/07/08 3d打印 个性化定制， 环境科学， 实验与 分析装置， 质谱检测  three Dimensional Printing, Customized Fabrication, Environmental Science, Experiment And Analysis Device, Mass Spectrometry Detection   Stray light analysis of solar photoelectric detection system on space target (EI CONFERENCE) 会议论文  OAI收割 2012 International Conference on Intelligent System and Applied Material, GSAM 2012, January 13, 2012 - January 15, 2012, Taiyuan, Shanxi, China Li L.-Y.; Wang Y.-F.; San X.-G. 收藏  |  浏览/下载：150/0  |  提交时间：2013/03/25 Most conventional spacious solar photoelectric detection systems suffer from unexpected stray light. This paper demonstrates the effects on photoelectric detection system bring out by stray light. On this foundation  build up evaluation index of stray light system  to search the reasonable programme to eliminating stray light. A detailed telescope system geometry model was created  and scatter models were create for telescope and enclosure components. By the means of designing the structure of main baffle  baffle vane and the coating technology. In order to verify the prosperity of structure that designed  we utilizes software to analysis opto-mechanical model. we utilizes software to analysis opto-mechanical model. The simulations show that point source transmittance of the system is thus reduced by up to two orders of magnitude between 10-8 and 10-10. Meanwhile  the experiment obtains clean detection data which satisfies the system requirements. Stray light has been suppressed effectually  and so measurement precision was improved from detection graphics. (2012) Trans Tech Publications.   Characteristic point match algorithm based on the SURF in binocular stereo vision (EI CONFERENCE) 会议论文  OAI收割 5th International Conference on Intelligent Networks and Intelligent Systems, ICINIS 2012, November 1, 2012 - November 3, 2012, Tianjin, China 作者:  Wang L.;  Wang L.;  Wang L.;  Yang L.;  Yang L. 收藏  |  浏览/下载：31/0  |  提交时间：2013/03/25 One of the main components of the computer vision is 3D reconstruction. Extracts and the match based on two-dimensional picture characteristic point is the 3D reconstruction technology core. Taking binocular stereoscopic vision theory as a foundation  through extracts the characteristics of SURF based on the multi-scale analysis  this feature has specific scale reproducibility  put the epipolar constraints and disparity constraints as conditions judgement to specific screening  it is greatly reduced the search range. The experiment use the matching method for three different actual scenes  the results shows that the method can enhance the image matching speed and precision  and can get more precise dense parallax  used for reconstruction complete scene. 2012 IEEE.   The research of digltal CR medicine image adapitive enhancement method (EI CONFERENCE) 会议论文  OAI收割 4th International Conference on Mechanical and Electrical Technology, ICMET 2012, July 24, 2012 - July 26, 2012, Kuala Lumpur, Malaysia Ming-Hui Z.; Yao-Yu Z. 收藏  |  浏览/下载：72/0  |  提交时间：2013/03/25 Digital CR medicine radiation image is in doctor's favor and has became medicine imaging technology new hot spot because of its high gray contrast  powerful computer disposal function  little radiation dosage  non-film diagnosis  different area consultation. But degradation of digital X-ray medical image such as low contrast and blurring during radiographic imaging  caused by complexity of body tissue and effects of X-ray scattering and electrical noise etc.  can worsen the results of analysis and diagnosis. So it is usually needed that CR medicine image is enhanced to improve its vision quality  and easy to doctor's more accurate diagnosis. The general enhancement algorithms over enhancing the contrast and lose image details  aiming at the defects  an enhancement algorithm for CR image is proposed based on the ratio of deviation to mean of domain. The arithmetic enhance CR image edge details by adjusting factor K based on the ratio of deviation to mean of domain of CR image. Experiment results demonstrate that the algorithm enhances CR image detail and CR image enhanced has good visual effect  the adaptive enhancement method is fit for CR medicine image. (2012) Trans Tech Publications  Switzerland.   Field-line coupling interference prediction of LCD module in high-power TEA CO2 laser system (EI CONFERENCE) 会议论文  OAI收割 2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China Ge X.; Li X. 收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25 In high power TEA CO2 laser system  liquid crystal display (LCD) module is a key device for display and control functions. Because of laser's harsh electromagnetic environment  LCD module coupled to the electromagnetic interference easily  leading to not work normally. This paper analyzed the interference coupling mechanism. On the basis of the analysis results  LCD module's field-line coupling is calculated by Taylor form's BLT equation. The calculation result is verified by experiment. The results show that  due to the field-line coupling  the data line of LCD module existed interference voltage  interference voltage value is 1V. The interference voltage is larger than the LCD module's noise margin. LCD module must shield the interference. 2012 IEEE.   Design of motion compensation mechanism of satellite remote sensing camera (EI CONFERENCE) 会议论文  OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China Gu S.; Yan Y.; Xu K.; Jin G. 收藏  |  浏览/下载：49/0  |  提交时间：2013/03/25 With the development of aerospace remote sensing technology  the ground resolution of remote sensing camera enhances continuously. Since there is relative motion between camera and ground target when taking pictures  the target image recorded in recording media is moved and blurred. In order to enhance the imaging quality and resolution of the camera  the image motion had to be compensated. In order to abate the effect of image motion to image quality of space camera and improve the resolution of the camera  the compensation method of image motion to space camera is researched. First  the reason of producing drift angle and adjustment principle are analyzed in this paper. This paper introduce the composition and transmission principle of image motion compensation mechanism. Second  the system adopts 80C31 as controller of drift angle  and adopts stepping motor for actuators  and adopts absolute photoelectric encoder as the drift Angle measuring element. Then the control mathematical model of the image motion compensation mechanism are deduced  and it achieve the closed-loop control of the drift angle position. At the last  this paper analyses the transmission precision of the mechanism. Through the experiment  we measured the actual precision of the image motion compensation mechanism  and compared with the theoretical analysis. There are two major contributions in this paper. First  the traditional image motion compensation mechanism is big volume and quality heavy. This has not fit for the development trend of space camera miniaturization and lightweight. But if reduce the volume and quality of mechanism  it will bring adverse effects for the precision and stiffness of mechanism. For this problem  This paper designed a image motion compensation that have some advantages such as small size  light weight at the same time  high precision  stiffness and so on. This image motion compensation can be applicable to the small optics cameras with high resolution. Second  the traditional mechanism control need to corrected  fitting and iterative for the control formula of mechanism. Only in this way  we can get the optimal control mathematical model. This paper has high precision of the control formula derived. It can achieve the high precision control without fitting  It also simplify the difficulty of control mathematical model establishment. This paper designed the range of adjusting of image motion compensation mechanism between -5 +5. Based on choosing-5  -4  -3  -2  -1  0  +1  +2  +3  +4  +4 as the expectation value of the imaginary drift angle  we get ten groups of the fact data in adjusting drift angle measured. The test results show that the precision of the drift angle control system can be achieved in 1. It can meet the system requirements that the precision of the control system is less than 3'  and it can achieve the high-precision image motion compensation. 2011 SPIE.   The study of the experiment with oil shale characteristics (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Materials for Renewable Energy and Environment, ICMREE2011, May 20, 2011 - May 22, 2011, Shanghai, China Zhao X.; Xiong W. 收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25 This is great for the actual state of the world's energy shortage. The experiment oil shale from Jilin Huadian were studied and analyzed by this paper  it carried on the analysis using regression analysis's method to the tentative data to obtains the experimental correlation between the calorific capacity and volatile. According to the characteristics of oil shale  Providing a reference for the corresponding professionals of improving combustion efficiency of oil shale. 2011 IEEE.