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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：RL-based Trajectory Planning for Efficient Exploration of Spatio-Temporal Fields
RL 高效时空场 探测轨迹 规划
2023/5/17
This talk concerns trajectory planning problems of an autonomous vehicle for field exploration, where the vehicle needs to accumulate sufficient information on a spatio-temporal field and to reach a d...
SCALING PATTERNS OF NATURAL URBAN PLACES AS A RULE FOR ENHANCING THEIR URBAN FUNCTIONALITY USING TRAJECTORY DATA
Scaling patterns Natural urban place Urban functionality Trajectory data
2018/5/14
With the availability of massive trajectory data, it is highly valuable to reveal their activity information for many domains such as understanding the functionality of urban regions. This article uti...
TRAJECTORY BASED 3D FRAGMENT TRACKING IN HYPERVELOCITY IMPACT EXPERIMENTS
Hypervelocity impact Space debris Fragmentation Particle tracking Trajectory fitting Stereo matching
2018/6/5
Collisions between space debris and satellites in Earth’s orbits are not only catastrophic to the satellite, but also create thousands of new fragments, exacerbating the space debris problem. One chal...
Infant feeding and growth trajectory patterns in childhood and body composition in young adulthood
breastfeeding BMI growth patterns body composition longitudinal Project Early Nutrition
2018/11/15
Background: Growth patterns of breastfed and formula-fed infants may differ, with formula-fed infants growing more rapidly than breastfed infants into childhood and adulthood.
THE DETECTION OF TRANSPORT LAND-USE DATA USING CROWDSOURCING TAXI TRAJECTORY
Crowdsourcing Movement Trajectory Land-use Data Update Delaunay Triangulations
2016/11/30
This study tries to explore the question of transport land-use change detection by large volume of vehicle trajectory data, presenting a method based on Deluanay triangulation. The whole method includ...
TRAJECTORY-BASED ANALYSIS OF URBAN LAND-COVER CHANGE DETECTION
change trajectory similarity index long time series Landsat
2016/11/23
China have occurred unprecedented urban growth over the last two decades. It is reported that the level of China’s urbanization increased from 18 % in 1978 to 41 % in 2003, and this figure...
HYBRID MODELS FOR TRAJECTORY ERROR MODELLING IN URBAN ENVIRONMENTS
Mobile mapping Photogrammetry Feature matching Orientation Adjustment Modelling Registration
2016/7/28
This paper tackles the first step of any strategy aiming to improve the trajectory of terrestrial mobile mapping systems in urban environments. We present an approach to model the error of terrestrial...
Performance Evaluation of Alternative Relative Orientation Procedures for UAV-based Imagery with Prior Flight Trajectory Information
Relative Orientation Essential Matrix Closed-form Solution UAVs
2016/7/27
Thanks to recent advances at the hardware (e.g., emergence of reliable platforms at low cost) and software (e.g., automated identification of conjugate points in overlapping images) levels, UAV-based ...
PENALIZED SPLINE:A GENERAL ROBUST TRAJECTORY MODEL FOR ZIYUAN-3 SATELLITE
Penalized Spline Trajectory Model ZiYuan-3 Satellite Band-to-band Registration Multispectral Images
2016/7/4
Owing to the dynamic imaging system, the trajectory model plays a very important role in the geometric processing of high resolution satellite imagery. However, establishing a trajectory model is diff...
TRAJECTORY ADJUSTMENT OF MOBILE LASER SCAN DATA IN GPS DENIED ENVIRONMENTS
MLS mobile mapping LiDAR long tunnel survey
2016/3/25
Mobile mapping often occurs in environments with poor or no GNSS signal reception (tunnels, urban canons, canopy …). Most mobile scanning systems are equipped with tactical grade inertial systems, GNS...
Trajectory Modeling for Satellite Image Triangulation
Satellite photogrammetry Sensor model Mapping support data Trajectory model
2015/11/23
The model components of satellite photogrammetry consist of a trajectory model, projection equations and parameter subset selection. The trajectory model is important because subsequent estimation is ...
An Example of a Nearly Integrable Hamiltonian System with a Trajectory Dense in a Set of Maximal Hausdorff Dimension
Nearly Integrable Hamiltonian System Trajectory Dense Maximal Hausdorff Dimension
2015/9/25
The famous ergodic hypothesis suggests that for a typical Hamiltonian on a typical energy surface nearly all trajectories are dense. KAM theory disproves it.Ehrenfest (The Conceptual Foundations of th...
Estimation of Center of Mass Trajectory using Wearable Sensors during Golf Swing
Wearable technology golf swing center of mass dynamic postural control balance simplified biomechanical model of human body
2015/8/28
This study suggests a wearable sensor technology to estimate
center of mass (CoM) trajectory during a golf swing. Groups of
3, 4, and 18 participants were recruited, respectively, for the
purpos...
Scripps Researchers Map Out Trajectory of April 2015 Earthquake in Nepal
Scripps Researchers Map Out Trajectory April 2015 Earthquake Nepal
2015/8/4
Researchers from Scripps Institution of Oceanography at UC San Diego have accurately mapped out the movement of the devastating 7.8-magnitude Nepal earthquake that killed over 9,000 and injured over 2...
Trajectory of body weight of performance tested dual-purpose bulls
cattle random regression heritability genetic correlation growth curve linear spline
2015/6/4
6 508 bulls of dual-purpose cattle at performance-test stations were weighed at intervals of 30 days from birth to 420 days. After all editing a total of 74 558 weight records were available. Live wei...