搜索结果: 1-15 共查到“物理学 models”相关记录208条 . 查询时间(0.145 秒)
COMPARATIVE STUDY ON DEEP NEURAL NETWORK MODELS FOR CROP CLASSIFICATION USING TIME SERIES POLSAR AND OPTICAL DATA
Deep neural networks CNNs LSTMs ConvLSTMs Crop classification
2019/2/28
Crop classification is an important task in many crop monitoring applications. Satellite remote sensing has provided easy, reliable, and fast approaches to crop classification task. In this study, a c...
Sensitivity experiments to mountain representations in spectral models
spectral models mountain representations
2015/9/28
This paper describes a set of sensitivity experiments to several formulations of orography. Three sets are considered: a "Standard" orography consisting of an envelope orography produced originally fo...
Comparisons of experimental topside electron concentration profiles with IRI and NeQuick models
ionospheric electron comparison profiles
2015/9/25
A critical part of the vertical ionospheric electron concentration profile is the region above its maximum (topside ionosphere) and many attempts have been made to model this region because of the lim...
A SEGMENTATION PROCEDURE OF LIDAR DATA BY APPLYING MIXED PARAMETRIC AND NONPARAMETRIC MODELS
LIDaR data segmentation process parametric and nonparametric models
2015/8/13
The paper proposes a segmentation procedure inspired to a robust LIDaR filtering data method recently introduced by the authors.
The method is based on the application of a Simultaneous AutoRegressi...
APPLICABILITY OF FIRST PULSE DERIVED DIGITAL TERRAIN MODELS FOR BOREAL FOREST STUDIES
DTM quality first pulse last pulse laser scanning TIN grid
2015/8/13
Detailed high-resolution digital terrain models (DTM) can be obtained using airborne laser scanner data. This paper evaluates the
accuracy of DTM derived from first return of laser scanner data for f...
SUPERVISED AND UNSUPERVISED NEURAL MODELS FOR MULTISPECTRAL IMAGE CLASSIFICATION
Land Cover Classification Identification Algorithms Artificial_Intelligence Imagery Pixel Multispectral
2015/7/29
Competitive learning neural networks have been successfully used as unsupervised training methods. It provides a way to discover the
salient general features that can be used to classify a set of pa...
The basic governing equations of coastal dynamics have been known for decades, but how can these equations be formulated to improve our understanding of coastal basins? The Dynamics of Coastal Models ...
APPLICATION OF LIDAR DATA AND 3D-CITY MODELS IN VISUAL IMPACT SIMULATIONS OF TALL BUILDINGS
Tall Buildings 3D Isovists Visual Impact
2015/5/7
The paper examines possibilities and limitations of application of Lidar data and digital 3D-city models to provide specialist urban analyses of tall buildings. The location and height of tall build...
Worm Algorithms for Classical Statistical Models
High temperature expansion, monte carlo simulation, dynamic critical
2014/12/22
We show that high-temperature expansions provide a basis for the novel approach to efficient Monte Carlo simulations. “Worm” algorithms utilize the idea of updating closed-path configurations (produce...
Bold diagrammatic Monte Carlo: A generic sign-problem tolerant technique for polaron models and possibly interacting many-body problems
Monte carlo feynman diagrams reforming particles breeding the particles
2014/12/20
We develop a Monte Carlo scheme for sampling series of Feynman diagrams for the proper self-energy, which are self-consistently expressed in terms of renormalized particle propagators. This approach i...
Generalized EMP and Nonlinear Schrodinger-type Reformulations of Some Scaler Field Cosmological Models
Friedmann-Lemaitre-Robertson-Walker Perfect fluid, Schrodinger equation
2014/12/8
We show that Einstein’s gravitational field equations for the Friedmann- Robertson-Lemaître-Walker (FRLW) and for two conformal versions of the Bianchi I and Bianchi V perfect fluid scalar field ...
Team models photosynthesis and finds room for improvement（图）
Team models photosynthesis finds room for improvement
2014/3/20
The team used a computer model to simulate how adding genes from a type of photosynthetic algae known as cyanobacteria might influence photosynthetic efficiency in plants. Cyanobacteria contain small ...
Subsonic phase transition waves in bistable lattice models with small spinodal region
phase transitions in lattices heteroclinic travelling waves FPU-type chains kinetic relations
2012/6/14
Phase transitions waves in atomic chains with double-well potential play a fundamental role in materials science, but very little is known about their mathematical properties. In particular, the only ...
Oscillatory critical amplitudes in hierarchical models and the tail of the Harris random variable
hierarchical models iteration of polynomial maps oscillatory critical amplitudes Harris random variable geometry of Julia set
2012/6/27
Oscillatory critical amplitudes have been repeatedly observed in hierarchical models and, in the cases that have been taken into consideration, these oscillations are so small to be hardly detectable....
Discrete symmetries of low-dimensional Dirac models: A selective review with a focus on condensed-matter realisations
relativistic quantum physics reduced dimensionality Dirac Hamiltonians quasi-relativity in solids
2012/6/15
The most fundamental characteristics of a physical system can often be deduced from its behaviour under discrete symmetry transformations such as time reversal, parity and chirality. Here we review ba...