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Extension of the distributed point source method for ultrasonic field modeling. [PDF]
Ultrasonics, 2011 The distributed point source method (DPSM) was recently proposed for ultrasonic field modeling and other applications. This method uses distributed point sources, placed slightly behind transducer surface, to model the ultrasound field. The acoustic strength of each point source is obtained through matrix inversion that requires the number of target ...
Cheng J, Lin W, Qin YX.
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Improved On-Orbit MTF Measurement Method Based on Point Source Arrays
Remote Sensing, 2023 The modulation transfer function (MTF) is a key characteristic used to assess the performance of optical remote sensing satellite sensors. MTF detection can directly measure a sensor’s two-dimensional (2D) point spread function (PSF); therefore, it has ...
Litao Li +4 more
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Applied Sciences, 2016 The distributed point source method, or DPSM, developed in the last decade has been used for solving various engineering problems—such as elastic and electromagnetic wave propagation, electrostatic, and fluid flow problems.
Dominique Placko +2 more
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Land, 2021 The prevention and control of non-point source pollution is an important link in managing basin water quality and is an important factor governing the environmental protection of watershed water in China over the next few decades.
Xuekai Chen +8 more
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The ancient literature source and flow of the point to point penetration acupuncture method
针刺研究, 2022 It has been the consensus of the academic community that the doctor DOU Han-qing in Jin-Yuan Dynasty was the pioneer of point to point penetration acupuncture method.The contents of several texts in Yuan-Ming-Qing Dynasties were combed on the basis of Dou Taishi Zhenjing(《》).The paradigm,the acupoints,basic elements and the characteristics of the main ...
LI Bao-jin, HUANG Long-xiang
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Estimation of non-point source pollution loads with flux method in Danjiangkou Reservoir area, China
Water Science and Engineering, 2017 The estimation of non-point source pollution loads into the Danjiangkou Reservoir is highly significant to environmental protection in the watershed. In order to overcome the drawbacks of traditional watershed numerical models, a base flow separation ...
Xiao-kang Xin, Wei Yin, Ke-feng Li
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An Automatic Recognition and Positioning Method for Point Source Targets on Satellite Images
ISPRS International Journal of Geo-Information, 2018 Currently, the geometric and radiometric calibration of on-board satellite sensors utilizes different ground targets using some form of manual intervention.
Kai Li +3 more
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A Bayesian method for point source polarisation estimation [PDF]
Astronomy & Astrophysics, 2021 The estimation of the polarisation P of extragalactic compact sources in cosmic microwave background (CMB) images is a very important task in order to clean these images for cosmological purposes –for example, to constrain the tensor-to-scalar ratio of primordial fluctuations during inflation– and also to obtain relevant astrophysical information about
Herranz Muñoz, Diego +4 more
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IEEE Photonics Journal, 2022 An optimization algorithm for phase-only hologram (POH) based on the point source method (PSM) with the holographic viewing-window (HVW) by using a convolutional neural network (CNN) is proposed.
Yun Chen +4 more
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Prediction Model of Agricultural Non-point Source Water Pollution Based on Grey Correlation Method [PDF]
Nature Environment and Pollution Technology, 2021 Accurate prediction of non-point source water pollution is conducive to the prevention and control of rural water pollution. To improve the prediction accuracy of agricultural non-point source water pollution and achieve timely prevention and control, a ...
R. Wang, F. X. Yang and G. M. Qu
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