A5012769031- Inertial Sensor and Navigation
- Indoor and Outdoor Localization Technologies
- Target Tracking and Data Fusion in Sensor Networks
- Robotics and Sensor-Based Localization
- Optical Systems and Laser Technology
- Astronomical Observations and Instrumentation
- Geophysics and Sensor Technology
- Advanced Vision and Imaging
- Underwater Vehicles and Communication Systems
- Gastric Cancer Management and Outcomes
- Advanced Control and Stabilization in Aerospace Systems
- Advanced Fiber Optic Sensors
- Computer Graphics and Visualization Techniques
- Magnetic Bearings and Levitation Dynamics
- Maritime Navigation and Safety
- Gastrointestinal Tumor Research and Treatment
- Industrial Vision Systems and Defect Detection
- Image and Video Stabilization
- Lung Cancer Treatments and Mutations
- Cyclopropane Reaction Mechanisms
- GNSS positioning and interference
- Advanced Research in Science and Engineering
- Geophysics and Gravity Measurements
- Control Systems in Engineering
- Multiple Myeloma Research and Treatments
Beihang University
2015-2025
Jiangsu University
2024
Jilin University
2023-2024
East China University of Science and Technology
2019-2021
State Council of the People's Republic of China
2021
Huaian First People’s Hospital
2020
Huainan Normal University
2014
Peking University
2010
Implicit neural representations such as Neural Radiance Field (NeRF) have focused mainly on modeling static objects captured under multi-view settings where real-time rendering can be achieved with smart data structures, e.g., PlenOctree. In this paper, we present a novel Fourier PlenOctree (FPO) technique to tackle efficient mod-eling and of dynamic scenes the free-view video (FVV) setting. The key idea in our FPO is combination generalized NeRF, representation, volumetric fusion transform....
Generating free-viewpoint videos is critical for immersive VR/AR experience but recent neural advances still lack the editing ability to manipulate visual perception large dynamic scenes. To fill this gap, in paper we propose first approach editable photo-realistic video generation large-scale scenes using only sparse 16 cameras. The core of our a new layered representation, where each entity including environment itself formulated into space-time coherent radiance representation called...
Abstract In this article, a novel necking detection and measurement method for automotive sheet metal components is proposed to detect measure necking. The utilizes point cloud registration-based approach achieve better defect performance in the region of interest. method, an efficient registration algorithm called global feature-iterative closest introduced, which exhibits excellent complex surfaces, such as parts. Subsequently, normal vector propagation extraction, enabling acquisition...
Fermentation is an effective method for improving the nutritional quality and functional characteristics of grains.
The advantage of endoscopic submucosal dissection (ESD) is the ability to achieve high R0 resection and a low local recurrence rate (Oyama in Gastrointest Endosc Clin N Am 24:201-212, 2014;Cai et al. 88:160-167, 2018;). Endoscopic full-thickness (EFTR) compensates for deficiency ESD, it can treat more ailments (Aslanian VideoGIE 4:343-350, 2019). However, due requirements EFTR experience defect closure skills, operation relatively difficult, which greatest obstacle widespread clinical use...
Background: In China, gastric cancer (GC) ranks second in incidence and mortality. Over 80% of patients with GC were diagnosed at an advanced stage poor clinical outcome. Chemotherapy was the mainstream treatment limited benefit. Apatinib, inhibitor targeting vascular endothelial growth factor receptor 2 (VEGFR2), has been approved for third-line cancer. However, data apatinib real-world setting are limited. this study, we aimed to understand current pattern apatinib, investigate...
In order to tackle the inaccurate step length measurement of people with different heights and in motion states, a height-adaptive method based on parameters is proposed this paper. This takes people's height, stride frequency, changing accelerometer output while walking into integrated consideration, builds dynamic parameterized model their length. study, these were calibrated thirty sets experiment data from which then verified experimentally by randomly selected subjects, regardless speed...
Dynamic angular velocity modeling and error compensation of VG095M in the whole temperature range, based on a radial basis function (RBF) neural network, is presented this paper. With gyro output voltage environmental as input output, an RBF network model established. The trained validated by experiment data. fitting 4.3818 × 10−6 deg s−1, which shows that has high precision. data except used for were processed with model. results show maximum, minimum mean square reduced to 4.6%, 4.3% 4.7%...
Abstract A phosphine‐catalyzed intermolecular annulation reaction of functionalized ortho ‐aminoacetophenones with alkynones has been disclosed in this paper. variety 2‐alkynylquinolines and benzo‐fused indolizine were selectively afforded moderate to good yields at different temperatures phosphine catalysts via the situ generated zwitterionic intermediate derived from alkynone phosphine. magnified image
Abstract Apatinib has been demonstrated to be effective and safe among patients with gastric cancer failing after at least two lines chemotherapy. This study aimed evaluate its effectiveness safety of low‐dose apatinib for the treatment in real‐world practice. We performed a prospective, multicenter observation setting. Patients advanced more than 18 years old were eligible received (500 mg or 250mg per day) therapy. The median progression‐free survival (PFS), overall (OS), objective...
A silver-catalyzed diastereoselective domino cyclization-migration/inverse electron-demand oxo-Diels–Alder reaction of the <italic>in situ</italic> generated cyclobutane-fused furan intermediate with oxo-IED-diene for constructing complicated tricyclic compounds.
This paper developed a measurement-while-drilling instrument based on predigested inertial measurement unit (PIMU) and presented PIMU design with rotational modulation device, thus improving precision of sensors. Then, this proposed an integral surveying method navigation system dead reckoning, measuring motion parameters characterized by long-term high accuracy. The semi-physical simulation was conducted under the laboratory conditions. results indicate that, suggested methodology...
To improve the dynamic random error compensation accuracy of Micro Electro Mechanical System (MEMS) gyroscope at different angular rates, an adaptive filtering approach based on variance model was proposed. In this paper, experimental data were utilized to fit which describes nonlinear mapping relations between MEMS output and input rate. After that, applied online adjustment Kalman Filter measurement noise coefficients. The proposed suppressed interference from rate in results. Dynamic...
With the open-loop fiber optic gyro (OFOG) model, output voltage and angular velocity can effectively compensate OFOG errors. However, model cannot reflect characteristics of errors well when it comes to pretty large dynamic velocities. This paper puts forward a modeling scheme with u temperature T as input variables error Δω variable. Firstly, is extracted from signals, then u, are used learning samples train Radial-Basis-Function (RBF) neural network model. Then nonlinear mapping over T,...
In a waist-worn Pedestrian Navigation System (PNS) based on Dead-Reckoning (DR), heading drift caused by Micro-Electro-Mechanical (MEMS) gyro bias is an essential factor affecting DR accuracy. Considering the characteristics of pedestrian navigation and poor repeatability MEMS gyros, this paper presents standing calibration method for bias. The current biases each boot can be calibrated accurately in initial stage before walking. Since attitude angles calculated output data from magnetic...
The scale factor error of the Doppler velocity log (DVL) and heading angle a compass are so integrated in dead reckoning (DR) navigation systems that it is difficult to separate them. This paper aims solve this problem by putting forward an online separation calibration method for based on 'arc linear' trajectory. introduces high-accuracy location information long base line (LBL) acoustic positioning system. At first, relationship between displacements 'arc' trajectory directions east north,...
The gyroscope successive startup error is an important factor leading to the of low or medium precision inertial navigation system. In order realize stepwise calibration three-axis gyro errors, characteristics compass heading alignment was analyzed. Then model related control parameters, error, and angle established. Based on model, a method errors proposed. Firstly, z-axis with variable parameters And then decoupled from model. It stands reason that simplified. Secondly, three-position x-...
Previous study has revealed that Lactiplantibacillus plantarum (Lp. plantarum) dy-1 fermentation changed the structural and in vitro fecal characteristics of barley dietary fiber. However, health-promoting effects of...
This paper studies the impact of accelerometer output error on levelling accuracy in mode airborne remote sensing stabilized platform. On basis that signal is non-stationary, a non-stationary time series model ARIMA(3,0,1) established, with which an adaptive Kalman filter designed. In filter, online correction method for forgetting factor based real-time measurements presented, achieving automatic adjustment gain. The and are applied to platform principle prototype made by our research...
The scheme based on the inertial measurement of while drilling (MWD) is developing direction MWD, but gyroscope bottleneck which arbitrarily restricts application scheme. This paper discusses Inertial Measurement Unit (IMU) consisting three fiber optic and accelerometers, as well algorithm IMU. In structural design this system, IMU rotating framework utilized to modulate output signal FOG, will reduce constant drift gyroscopes improve accuracy attitude angle trajectory. What's more,...