搜索结果: 1-15 共查到“知识库 Cylindrical”相关记录75条 . 查询时间(0.062 秒)
CLASSIFICATION OF MOBILE LASER SCANNING POINT CLOUDS OF URBAN SCENES EXPLOITING CYLINDRICAL NEIGHBOURHOODS
Point clouds Mobile Laser Scanning Classification Feature extraction Cylindrical Approach 3D Mapping
2018/6/5
This paper presents our work on automated classification of Mobile Laser Scanning (MLS) point clouds of urban scenes with features derived from cylinders around points of consideration. The core of ou...
TUNNEL POINT CLOUD FILTERING METHOD BASED ON ELLIPTIC CYLINDRICAL MODEL
Elliptic Cylindrical Model Point Cloud Filtering Tunnel Central Axis Non-points Regional Segmentation
2016/7/5
The large number of bolts and screws that attached to the subway shield ring plates, along with the great amount of accessories of metal stents and electrical equipments mounted on the tunnel walls, m...
CYLINDRICAL ORTHOPHOTOGRAPHY COMPLETE COVERAGE OF INSIDE/OUTSIDE CYLINDRICAL SURFACES SUCH AS CASTLE TOWERS
orthophotography architectural survey
2015/3/6
Numerical Modeling of Fracturing in Non-Cylindrical Folds: Case Studies in Fracture Prediction Using Structural Restoration
Fractures Geomechanics Joints Sant Corneli anticline Unfolding Fracture prediction Structural restoration
2014/10/22
This thesis contains several distinct studies aimed at better understanding fracturing in compressional fault-cored folds. At outcrops of growth strata in the Oliana anticline in the Spanish Pyrenees,...
PHOTOGRAMMETRIC MONITORING OF UNDER WATER EROSION IN THE VICINITY OF CYLINDRICAL BRIDGE PIERS
Under water photogrammetry image sequence analysis close range
2014/5/8
Within this work the three dimensional development of a scour around a cylindrical bridge pier has been investigated experimentally. The erosion process has been surveyed in short time intervals using...
Attenuation in a Cylindrical Left Handed Material (LHM) Wave-Guide Structure
Left Handed Material TM Waves TE Waves Attenuation Constant Waveguides Superconductor Metal
2013/1/30
This paper tackles the wave attenuation along with a cylindrical waveguides composed of a left Handed material (LHM), surrounded by a superconducting or metal wall. I used the transcendental equations...
Technique for high axial shielding factor performance of large-scale, thin, open-ended, cylindrical Metglas magnetic shields
Metglas, magnetic shielding axial shielding factor transverse shielding factor
2011/8/4
Abstract: Metglas 2705M is a low-cost commercially-available, high-permeability Cobalt-based magnetic alloy, provided as a 5.08-cm wide and 20.3-$\mu$m thick ribbon foil. We present an optimized const...
Stability and turbulent transport in rotating shear flows: prescription from analysis of cylindrical and plane Couette flows data
Stability and turbulent transport rotating shear flow
2011/8/30
This paper provides a prescription for the turbulent viscosity in rotating shear flows for use e.g. in geophysical and astrophysical contexts. This prescription is the result of the detailed analysis ...
Achievable Transverse Cylindrical Electromagnetic Mode
Electromagnetic Mode Maxwell equations
2011/8/31
The system of Maxwell equations with an initial condition in a vacuum is solved in a cylindrical coordinate system. It derives the cylindrical transverse elec-
tromagnetic wave mode in which the elec...
Exponential decay for nonlinear problem in non cylindrical domain
Exponential decay nonlinear problem cylindrical domain
2010/9/25
Exponential decay for nonlinear problem in non cylindrical domain.
气吸滚筒式棉花精量穴播器排种性能试验（Sowing-performance of Air-suction Cylindrical Cotton Precision Dibbler）
棉种 穴播器 气吸滚筒 吸孔线速度
2010/12/28
针对气吸滚筒式精量穴播器作业过程中能耗大、排种性能不稳定等问题，以主要影响因素:取种盘吸孔线速度和充种负压为研究对象进行正交试验、回归分析，确定各因素对排种性能的影响规律及较优工作参数组合。结果表明：充种相对压力-4.5 kPa、取种盘吸孔线速度0.38 m/s时为较优作业参数组合，此条件下穴播器的单粒指数为98.67%、综合评价指数为99.00%、重播指数为0.67%、漏播指数为0.67%，满足...
Transport barrier for the radial diffusion due to the ExB drift motion of guiding centers in cylindrical confinement geometry
Transport barrier for the radial diffusion ExB drift motion cylindrical confinement geometry
2010/12/28
We consider the radial transport of test particles due to the E×B drift motion in the guiding center approximation. In a configuration where the magnetic field is constant and uniform in linear device...
Spin precession and modulation in ballistic cylindrical nanowires due to the Rashba effect
Spin precession ballistic cylindrical nanowires
2010/11/24
The spin precession in a cylindrical semiconductor nanowire due to Rashba spin-orbit coupling has been investigated theoretically using an InAs nanowire containing a surface two-dimensional electron g...
Asymptotic behaviour of a cylindrical elastic structure periodically reinforced along identical fibers
cylindrical elastic structure identical fibers
2010/11/23
We describe the asymptotic behaviour of a cylindrical elastic body, reinforced along identical $\epsilon$-periodically distributed fibers of size $r_{\epsilon}$, with $0 < r_{\epsilon} < \epsilon$, fi...
Density models for streamer discharges: beyond cylindrical symmetry and homogeneous media
cylindrical symmetry homogeneous media
2010/11/16
Streamer electrical discharges are often investigated with computer simulations of density models (also called drift-diffusion-reaction models). We review these models, detailing their physical found...