搜索结果: 1-15 共查到“电子科学与技术 On-line”相关记录15条 . 查询时间(0.191 秒)
A Case Study:Workflow Analysis of Power Line Systems for Risk Management
LIDAR Vegetation Change Detection Multitemporal Surveying Imagery
2015/12/8
Typically, it has been a challenge for utility companies to implement more automated approaches to powerline maintenance. Our study considers using two emerging technologies – LIDAR and direct multipl...
Resonant Antennas Based on Coupled Transmission-Line Metamaterials
Antenna radiation patterns metamaterials microstrip antennas patch antennas propagation constant
2014/12/8
A novel microstrip patch antenna topology is presented for achieving a dual-band response with arbitrarily closely spaced resonances. This topology is based on a coupled transmission line structure in...
Transmission-Line Metamaterial Design of an Embedded Line Source in a Ground Recess
Antenna radiation patterns metamaterials periodic structures transmission lines
2014/12/8
A transmission-line metamaterial design of a material-embedded electric line source radiating inside a ground recess is investigated. The media embedding the recessed line source are designed such tha...
Line-based Classification of Terrestrial Laser Scanning Data using Conditional Random Field
Gaussian Mixture Model Expectation Maximization Terrestrial Laser Scanning Conditional Random Field
2014/4/22
This paper describes a line-based classification method, which labels TLS point clouds into vertical object, ground, tree and low objects. A local classifier implements labeling task on individual sit...
State variable distributed-parameter representation of transmission line for transient simulations
state-space methods power system transients Transmission line modeling
2010/10/12
In this paper, a distributed-parameter state variable approach is used to calculate transients on transmission lines based on the concept of travelling waves. The method of characteristics for lossles...
Distance Relaying Algorithm for Double-Circuit Transmission Line with Compensation for Reactance Effect under Standard Availability of Measurements
Double-circuit transmission line distance protection fault
2009/7/28
This paper deals with non-pilot distance protection of a double-circuit transmission line. Negative impact of the reactance effect, appearing in measuring a fault loop impedance, on operation of the r...
Optimal Location for Shunt Connected FACTS Devices in a Series Compensated Long Transmission Line
Maximum receiving end power shunt FACTS degree of series compensation
2009/7/28
Shunt FACTS devices are used for controlling transmission voltage, power flow, reducing reactive losses, and damping of power system oscillations for high power transfer levels. In this paper the opti...
New Approaches for On-line Tuning of the Linear Sliding Surface Slope in Sliding Mode Controllers
Sliding mode control sliding surface design time-varying sliding surface
2009/7/28
The main objective of this study is to propose new approaches for on-line tuning of the linear sliding surface slope in sliding mode controllers. The new approaches are developed for a class of second...
An Exact Line Integral Representation of the PO Radiation Integral from a Flat Perfectly Conducting Surfaces Illuminated by Elementary Electric or Magnetic Dipoles
PO radiation integral Kirchhoff aperture field equivalence principle
2009/7/28
In this paper, a line integral representation for the PO radiation integral from a flat perfectly conducting surface, illuminated by an arbitrary oriented elementary either electric or magnetic dipole...
A Study on Effect of Line Width, Composition and Firing Temperature on the Microstripline Properties
Fritless thick film paste Microstriplines Transmittance
2010/12/8
The transmittance and reflectance of microstriplines of different widths, fabricated by thick film and thin film technology are studied in the X and Ku band (8–18 GHz). The fritless thick film Ag past...
Open-Circuit End Effect of Microstrip Line Configuration in Plasma Medium
Open-Circuit End Microstrip Line Configuration Plasma Medium
2010/12/10
The extension in length for open microstrip configuration in plasma media is determined using spectral domain technique under quasi static approach [1, 2]. The results were verified by modifying Hamme...
Similarity Criteria of EHF Physical Model of Long Distance Transmission Line with Plate Phases
EHF Physical Model Long Distance Transmission Line Plate Phases
2010/12/21
This paper presents a mathematical analysis in order to determine the coefficients of similarity criteria of EHF physical model for the given long distance transmission line. The integral analogue met...
Multi-layer 2 mil line technology has been increasingly required for VLSI and very high speed logic devices. This technology makes it possible to shorten the length of interconnection lines between VL...
Selective Glaze for Last Line Visible Thermal Head
a thermal head the last line the selective glazed layer
2010/12/29
A thermal head in which the last line is visible allows characters to be viewed as soon as they are printed. The thermal head is constructed with a selective glazed layer and heat sources, which are f...
This paper will present the critical parameters of the screen mesh materials and compare the characteristics of the screen mesh materials and compare the characteristics of the nylon, polyester, stain...