Patents by Inventor Jiawei Yu
Jiawei Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11959375Abstract: A method for evaluating a downhole working condition of a PDC bit includes: performing an indoor test, including performing a drilling test in different full-sized cores by using the PDC bit with different degrees of abrasion and balling under condition of given WOB and rotational speed, to acquire change characteristics of a WOB, a rotational speed, a torque, a ROP and a bit vibration of the PDC bit in different time domains; improving and perfecting an existing prediction model and evaluation method for the downhole working condition through data obtained by the test to obtain the method; reading parameters of the WOB, the rotational speed, the torque and the ROP in real time during drilling; determining the downhole working condition of the PDC bit by using the method in the improving and perfecting.Type: GrantFiled: March 16, 2021Date of Patent: April 16, 2024Assignee: CNPC Engineering Technology R&D Company LimitedInventors: Guodong Ji, Haige Wang, Meng Cui, Zhao Meng, Qiang Wu, Li Liu, Jiawei Zhang, Changchang Chen, Liu Cui, Jing Yu
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Publication number: 20240093604Abstract: A method for determining a productivity of a coalbed methane well without shutting down the well includes steps of: obtaining coalbed methane basic data; based on PVT experimental data, determining a relationship table between a pressure and a coalbed methane deviation factor, and a relationship table between the pressure and a pseudo-pressure; recording daily gas production rates, bottomhole flow pressures, and cumulative gas productions at each stabilized flow pressure test moment in at least three different production stages; determining formation pressures corresponding to each stabilized flow pressure test moment based on a material balance equation; according to the formation pressures, the bottomhole flow pressures and the production rates, determining coefficients in a deliverability equation of the coalbed methane well for determining the deliverability equation; substituting the formation pressures and the bottomhole flow pressures into the deliverability equation for obtaining corresponding productType: ApplicationFiled: December 3, 2023Publication date: March 21, 2024Inventors: Bo Hu, Xiaobo Liu, Yongyi Zhou, Kui Chen, Yongming He, Linsong Liu, Yaonan Yu, Jiawei Zhang, Yongheng Wang
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Publication number: 20240091170Abstract: Provided are catechol nanoparticles, catechol protein nanoparticles, and a preparation method and use thereof. The method includes: adding a tannin compound-containing natural herb medicine into water to obtain a mixture, and subjecting the mixture to heating reflux extraction to obtain a herb medicine extract and subjecting the herb medicine extract to fractionation to obtain the catechol nanoparticles.Type: ApplicationFiled: August 1, 2023Publication date: March 21, 2024Applicant: Shihezi UniversityInventors: Bo HAN, Jingmin Fan, Hang Yu, Rui Xue, Jiawei Guan, Yu Xu, Linyun He, Ji Liu, Chengyu Jiang, Xin Lu, Xiangze Kong, Wei Yu, Wen Chen
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Publication number: 20230034574Abstract: This application discloses a method for determining a lane line recognition abnormal event, and a lane line recognition apparatus and system. One example method includes: determining an updated lane line recognition confidence based on a posteriori lane line recognition result; constructing a lane line true value based on the updated lane line recognition confidence; and determining a lane line recognition abnormal event based on the lane line recognition result and the lane line true value.Type: ApplicationFiled: October 17, 2022Publication date: February 2, 2023Inventors: Yu XIE, Jiawei YU, Xiaoli SHE
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Publication number: 20230025414Abstract: This application relates to the automated driving field, and discloses a method for identifying abnormal driving behavior, a system, and a vehicle including the system. The method for identifying abnormal driving behavior includes: obtaining vehicle driving behavior data, and determining, based on the vehicle driving behavior data, whether a vehicle is in a state of suspicious abnormal driving behavior; obtaining current vehicle driving scenario data if the vehicle is in the state of suspicious abnormal driving behavior; and determining, based on the vehicle driving behavior data and the current vehicle driving scenario data, whether the suspicious abnormal driving behavior is abnormal driving behavior. In the technical solutions of this application, current driving scenario information is introduced to an identification process of abnormal driving behavior of the vehicle, so that accuracy of identifying the abnormal driving behavior is improved.Type: ApplicationFiled: October 3, 2022Publication date: January 26, 2023Inventors: Hongzhan Ma, Jiawei Yu, Gailiang Wang, Jun Jiang
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Patent number: 10475988Abstract: In one embodiment, a spin torque device uses a thick (e.g., >1 nm, and preferably >=2-6 nm) ferrimagnet (FIM) layer, instead of a thin (e.g., <1-2 nm) FM layer in the device's stack. The FIM layer may be composed of a cobalt-gadolinium (Co—Gd) alloy, cobalt-terbium (Co—Tb) multilayers, or other materials that provide anti-ferromagnetic coupling between two sub-lattices. Negative exchange interaction between the two sub-lattices of the FIM may allow for low current switching. High thermal stability and external magnetic field resistance may also be achieved.Type: GrantFiled: July 21, 2017Date of Patent: November 12, 2019Assignee: National University of SingaporeInventors: Hyunsoo Yang, Rahul Mishra, Jiawei Yu
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Patent number: 10158176Abstract: The present invention relates to a patch antenna having programmable frequency and polarization comprising the first metal covering layer, the dielectric layer, the second metal covering layer and four metallized through-holes, each of which are disposed sequentially from top to bottom, wherein the first metal covering layer comprises the feeding line and the radiating patch; the feeding line comprises the micro-strip line, which can be connected to the outer feeding port; the micro-strip line is connected to one side of the radiating patch through the high-resistance line; the radiating patch is a square-shaped metal patch; a gap is etched near the other side of the radiating patch, namely, the radiating edge; the gap is parallel to the radiating edge.Type: GrantFiled: May 5, 2015Date of Patent: December 18, 2018Assignee: JIANGSU HENGXIN TECHNOLOGY LIMITED CORPORATIONInventors: Xianqi Lin, Jin Zhang, Yuan Jiang, Jiawei Yu, Zhanyu Kang, Peng Mei, Zhonghua Liu, Yanping Hua
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Patent number: 9972918Abstract: The present invention relates to a parallel-feeding, dual-band and dual-polarized base station antenna comprising a radiating patch layer, four F-shaped metal strips which are perpendicular to the radiating patch layer and orthogonal to each other, and a feeding layer, which is sequentially disposed from top to bottom, wherein the radiating patch layer comprises the first metal covering layer and the first dielectric layer; wherein the first metal covering layer is square-shaped and an isosceles triangle having the same size is cut from each corner of the square; wherein the four F-shaped metal strips work as the extended part of the feeding layer to couple-feed the radiating patch layer; the feeding layer comprises the first metal feed-line layer, the second dielectric layer, the metal floor layer, the third dielectric layer and the second metal feed-line layer, which are sequentially disposed from top to bottom.Type: GrantFiled: May 5, 2015Date of Patent: May 15, 2018Assignee: JIANGSU HENGXIN TECHNOLOGY LIMITED CORPORATIONInventors: Xianqi Lin, Jin Zhang, Yuan Jiang, Liying Nie, Zhe Chen, Zhonghua Liu, Yanping Hua, Jiawei Yu
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Patent number: 9953396Abstract: The present invention relates to the technical field of visualization in scientific computing, and specifically discloses a ray casting visualization multi-user interaction processing method based on Hadoop and CUDA. On one hand, the method of the present invention employs the parallel processing capability of Hadoop, MapReduce, and NVIDIA CUDA for accelerated rendering, and, on the other hand, the present invention designs a method to avoid duplicate computation for a multi-user interaction environment, thereby reducing the time consumption of duplicate computation. The method of the present invention realizes the fast operation of each pixel gradient, ray resampling and data synthesis and can accomplish the 3D visualization imaging rapidly and efficiently.Type: GrantFiled: September 26, 2017Date of Patent: April 24, 2018Assignee: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Yanjun Peng, Jiawei Yu, Yuanhong Wang, Ruisheng Jia, Xinming Lu
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Publication number: 20180108107Abstract: The present invention relates to the technical field of visualization in scientific computing, and specifically discloses a ray casting visualization multi-user interaction processing method based on Hadoop and CUDA. On one hand, the method of the present invention employs the parallel processing capability of Hadoop, MapReduce, and NVIDIA CUDA for accelerated rendering, and, on the other hand, the present invention designs a method to avoid duplicate computation for a multi-user interaction environment, thereby reducing the time consumption of duplicate computation. The method of the present invention realizes the fast operation of each pixel gradient, ray resampling and data synthesis and can accomplish the 3D visualization imaging rapidly and efficiently.Type: ApplicationFiled: September 26, 2017Publication date: April 19, 2018Applicant: Shandong University of Science and TechnologyInventors: Yanjun PENG, Jiawei Yu, Yuanhong Wang, Ruisheng Jia, Xinming Lu
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Publication number: 20170271770Abstract: The present invention relates to a patch antenna having programmable frequency and polarization comprising the first metal covering layer, the dielectric layer, the second metal covering layer and four metallized through-holes, each of which are disposed sequentially from top to bottom, wherein the first metal covering layer comprises the feeding line and the radiating patch; the feeding line comprises the micro-strip line, which can be connected to the outer feeding port; the micro-strip line is connected to one side of the radiating patch through the high-resistance line; the radiating patch is a square-shaped metal patch; a gap is etched near the other side of the radiating patch, namely, the radiating edge; the gap is parallel to the radiating edge.Type: ApplicationFiled: May 5, 2015Publication date: September 21, 2017Inventors: Xianqi Lin, Jin ZHANG, Yuan JIANG, Jiawei YU, Zhanyu KANG, Peng MEI, Zhonghua LIU, Yanping HUA
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Publication number: 20170077614Abstract: The present invention relates to a parallel-feeding, dual-band and dual-polarized base station antenna comprising a radiating patch layer, four F-shaped metal strips which are perpendicular to the radiating patch layer and orthogonal to each other, and a feeding layer, which is sequentially disposed from top to bottom, wherein the radiating patch layer comprises the first metal covering layer and the first dielectric layer; wherein the first metal covering layer is square-shaped and an isosceles triangle having the same size is cut from each corner of the square; wherein the four F-shaped metal strips work as the extended part of the feeding layer to couple-feed the radiating patch layer; the feeding layer comprises the first metal feed-line layer, the second dielectric layer, the metal floor layer, the third dielectric layer and the second metal feed-line layer, which are sequentially disposed from top to bottom.Type: ApplicationFiled: May 5, 2015Publication date: March 16, 2017Applicant: JIANGSU HENGXIN TECHNOLOGY LIMITED CORPORATIONInventors: Xianqi Lin, Jin ZHANG, Yuan JIANG, Liying NIE, Zhe Chen, Zhonghua Liu, Yanping HUA, Jiawei Yu