搜索结果: 1-15 共查到“工学 Higher-order”相关记录24条 . 查询时间(0.187 秒)
HIERARCHICAL HIGHER ORDER CRF FOR THE CLASSIFICATION OF AIRBORNE LIDAR POINT CLOUDS IN URBAN AREAS
Classification Point Cloud Higher Order Random Fields Contextual Lidar Urban
2016/7/28
We propose a novel hierarchical approach for the classification of airborne 3D lidar points. Spatial and semantic context is incorporated via a two-layer Conditional Random Field (CRF). The first laye...
Better Static Memory Management: Improvements to Region-Based Analysis of Higher-Order Languages.
Memory Management Region-Based Analysis Higher-Order Languages.
2016/5/24
Static memory management replaces runtime garbage collection with compile-time annotations that make all memory allocation and deallocation explicit in a program. We improve upon the Tofte/Talpin regi...
Approximating LIDAR Ground Elevation Data by Higher-Order Tensor-Product B-Splines
DEM/DTM LIDAR Surface Modelling Reconstruction GIS
2015/12/8
We consider, in this paper, the problem of reconstructing the surface from LIDAR ground elevations. We reconstruct the surface by first rotating the LIDAR scan-lines so that they are parallel to the Y...
Extraction of Main and Secondary Roads in VHR Images Using A Higher-Order Phase Field Model
Road Urban Satellite Segmentation Modelling Variational methods
2015/12/4
This paper addresses the issue of extracting main and secondary road networks in dense urban areas from very high resolution (VHR, ~0.61m) satellite images. The difficulty with secondary roads lies in...
Higher Order Properties of Bootstrap and Jackknife Bias Corrected Maximum Likelihood Estimators
Bootstrap and Jackknife Bias Likelihood Estimators
2015/9/22
Pfanzagl and Wefelmeyer (1978) show that bias corrected ML estimators are higher order efficient.
Their procedure however is computationally complicated because it requires integrating complicat...
Difference in Difference Meets Generalized Least Squares: Higher Order Properties of Hypotheses Tests
panel data treatment eff ect GLS
2015/9/22
We investigate estimation and inference in difference in difference econometric models
used in the analysis of treatment effects. When the innovations in such models display serial
...
Estimation with Weak Instruments: Accuracy of Higher Order Bias and MSE Approximations
weak instruments higher order expansions
2015/9/22
In this paper we consider parameter estimation in a linear simultaneous equations model. It
is well known that two stage least squares (2SLS) estimators may perform poorly when the
instruments are w...
Retrieving structured information from an initial random collection of objects may be carried out by understanding the spatial
arrangement between them, assuming no prior knowledge about those object...
Bounding Higher Order Ionosphere Errors for the Dual Frequency GPS User
Bounding Higher Order Ionosphere Errors Dual Frequency GPS User
2015/6/25
The advent of a second civil GPS frequency heralds a new phase of GPS performance. For single-frequency GPS users, the signal delay due to refraction through the ionosphere is the largest and most var...
POINTS CLASSIFICATION BY A SEQUENTIAL HIGHER – ORDER MOMENTS STATISTICAL ANALYSIS OF LIDAR DATA
LIDAR Classification Algorithms Skewness Kurtosis
2014/6/5
The paper deals with a new sequential procedure to perform unsupervised LIDAR points classification by iteratively studying skewness and kurtosis for elevation and intensity point distribution values....
Computer Generated Quadratic and Higher Order Apertures and Its Application on Numerical Speckle Images
Higher Order Modulated Apertures Speckle Imaging Resolution Point Spread Function
2013/1/30
A computer generated quadratic and higher order apertures are constructed and the corresponding numerical speckle images are obtained. Secondly, the numerical images of the autocorrelation intensity o...
Experimental verification of higher-order mode suppression in a bent large-mode-area multi-cladding fiber
Fiber design and fabrication iber properties
2015/6/9
A novel technique to suppress the higher-order mode in a bent large-mode-area triple-cladding fiber is experimentally presented. 3-dB suppression of LP 02 mode is observed on a fabricated triple-cladd...
Advanced Coherent Modulation Formats and Algorithms: Higher-Order Multi-Level Coding for High-Capacity System Based on 100Gbps Channel
Coherent communications Fiber optics communications
2015/6/5
We review recent technology advances in high-capacity 100Gbps system using polarization-division-multiplexed (PDM) eight-level coding (8PSK and 8QAM) and DSP-based intradyne detection.Research activit...
Simple suppression technique for higher-order mode amplification in bent large mode area triple-cladding fibers
Fiber design fabrication iber properties
2015/6/4
A novel technique to suppress the higher-order mode in bent LMA triple-cladding fibers is proposed. It is shown that the higher-order mode can be coupled to a cladding mode with only an adjustment of ...
An advanced higher-order theory for laminated composite plates with general lamination angles
Laminated and sandwich composites Higherorder theory C0 continuity requirement Transverse shear
2012/2/29
This paper proposes a higher-order shear deformation theory to predict the bending response of the laminated composite and sandwich plates with general lamination configurations. The proposed theory a...