Results 281 to 290 of about 692,102 (303)

Machine Learning-Enhanced 3D GIS Urban Noise Mapping with Multi-Modal Factors

ISPRS Int. J. Geo Inf.
Geographic Information System (GIS)-based noise management is crucial in urban environments as it provides precise spatial analysis, helping to identify noise hotspots and optimize noise control measures.
Jianping Pan, Yuzhe He, Wei Ma, S. An, Lu Li, Dan Huang, Dunxin Jia   +6 more
semanticscholar   +1 more source

Toward a dynamic national transportation noise map: Modeling temporal variability of traffic volume

The Journal of the Acoustical Society of America, 2023
The National Transportation Noise Map (NTNM) gives time-averaged traffic noise across the continental United States (CONUS) using annual average daily traffic. However, traffic noise varies significantly with time. This paper outlines the development and utility of a traffic volume model which is part of VROOM, the Vehicular Reduced-Order Observation ...
Mylan R. Cook, Kent L. Gee, Mark. K. Transtrum, Shane V. Lympany   +3 more
openaire   +2 more sources

Dual-Detector Reoptimization for Federated Weakly Supervised Video Anomaly Detection via Adaptive Dynamic Recursive Mapping

IEEE Transactions on Industrial Informatics
Federated weakly supervised video anomaly detection represents a significant advancement in privacy-preserving collaborative learning, enabling distributed clients to train anomaly detectors using only video-level annotations.
Yong Su, Jiahang Li, Simin An, Hengpeng Xu, Weilong Peng   +4 more
semanticscholar   +1 more source

Symbolic dynamics of one-dimensional maps: Entropies, finite precision, and noise

International Journal of Theoretical Physics, 1982
In the study of nonlinear physical systems, one encounters apparently random or chaotic behavior, although the systems may be completely deterministic. Applying techniques from symbolic dynamics to maps of the interval, we compute two measures of chaotic behavior commonly employed in dynamical systems theory: the topological and metric entropies.
Crutchfield, J. P., Packard, N. H.
openaire   +1 more source

FPGA-Based Magnetic Field Camera for Dynamic Magnetic Field Mapping

IEEE Sensors Letters
This letter demonstrates the use of an field-programmable gate array and commercially available Hall effect magnetic field sensors to create a magnetic field camera offering high-speed capability for ac measurements.
H. Nicolas, T. Quirin, J. Pascal
semanticscholar   +1 more source

Influence of dynamical noise on time series generated by nonlinear maps

Physica D: Nonlinear Phenomena, 2008
Consider the dynamical noise called ``pseudonoise'' corrupting a time series generated by a discrete iterated function system (map). Especially, the discrete maps \[ x_{n+1} = f(x_n) \] modified by the two types of maps \[ y_{n+1} = f(y_n) + \eta_n \] or \[ z_{n+1} = f(z_n+\eta_n) \] with noise terms \(\eta_n\) are under consideration.
Strumik, Marek, Macek, Wiesław M.
openaire   +2 more sources

Particle-Based Instance-Aware Semantic Occupancy Mapping in Dynamic Environments

IEEE Transactions on robotics
Representing the 3-D environment with instance-aware semantic and geometric information is crucial for interaction-aware robots in dynamic environments.
Gang Chen, Zhaoying Wang, Wei Dong, Javier Alonso-Mora   +3 more
semanticscholar   +1 more source

Toward a dynamic national transportation noise map: Modeling temporal variability of spectral traffic noise emission levels

The Journal of the Acoustical Society of America
The National Transportation Noise Map predicts time-averaged road traffic noise across the continental United States (CONUS) based on annual average daily traffic counts. However, traffic noise can vary greatly with time. This paper outlines a method for predicting nationwide hourly varying source traffic sound emissions called the Vehicular Reduced ...
Mylan R. Cook, Kent L. Gee, Mark. K. Transtrum, Shane V. Lympany   +3 more
openaire   +2 more sources

Signal‐to‐noise analysis of cerebral blood volume maps from dynamic NMR imaging studies

Journal of Magnetic Resonance Imaging, 1997
AbstractThe use of cerebral blood volume (CBV) maps generated from dynamic MRI studies tracking the bolus passage of paramagnetic contrast agents strongly depends on the signal‐to‐noise ratio (SNR) of the maps. The authors present a semianalytic model for the noise in CBV maps and introduce analytic and Monte Carlo techniques for determining the effect
J L, Boxerman, B R, Rosen, R M, Weisskoff   +2 more
openaire   +2 more sources

Dynamics of the boundary map of a system with spherical noise

Theoretical and Mathematical Physics
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pochinka, O. V., Yagilev, A. A.
openaire   +2 more sources