搜索结果: 1-15 共查到“工学 Drop”相关记录53条 . 查询时间(0.296 秒)
Comparison of Tree Extraction from Intensity Drop and From Multiple Returns in ALS Data
LIDAR data Tree extraction Airborne Laser Scanner Three dimensional Intensity Drop Multiple Returns
2015/11/20
LIDAR is an application widely open as an area of study for modelling detailed topographic maps. It is generally used in airborne applications. In this study, the aim is tree extraction from a data ha...
Non-linear modal interactions in the oscillations of a liquid drop in a gravitational "eld
Liquid drop Modal interactions Bifurcations
2015/8/27
Non-linear modal interactions in the dynamics of a vibrating drop are examined. The partial di!erential equations governing the drop vibrations are formulated assuming potential #ow and incompressibil...
Ozone levels drop 20 percent with switch from ethanol to gasoline
Ozone levels drop 20 percent with switch from ethanol to gasoline
2014/5/13
Choice at the pump. When residents of São Paulo chose gasoline over ethanol to fuel their vehicles, levels of ozone actually decreased, according to a Northwestern study.
多层金属电源线地线网络拓扑结构的IR-drop分析方法
电源/地线网络 多层 压降 通孔
2017/1/4
提出了一种电源/地线(P/G)网络压降(IR-drop)静态分析方法.该方法探索了多层金属立体P/G网络结构,通过输入各金属层的坐标和通孔(Via)的工艺规则,分析不同多层金属P/G网络的拓扑结构对IR-drop的影响.实验结果表明,文中方法的压降评估结果与SPICE仿真结果相比有着高度的一致性,平均误差小于0.4%,且算法时间复杂度与通孔数目成线性关系.并且指出中间层金属的拓扑结构对IR-dro...
A Review of Termo- and Diffusio-Phoresis in the Atmospheric Aerosol Scavenging Process. Part 1: Drop Scavenging
Thermophoresis Diffusiophoresis Impaction
2013/2/26
The role of phoretic forces in providing in-cloud and below-cloud scavenging due to falling drop is reviewed by considering published papers dealing with theoretical models, laboratory and field measu...
Optical digital filters that employ optical delay lines are proposed. Properly locating the zeros in the transfer function is shown to enable interleaver pairs to be designed with the same amplitude r...
A 50-GHz channel spaced dispersion-compensated interleaver pair for a metro add-drop network application was demonstrated using a recirculating loop. After five cascaded nodes (ten interleavers), a 2....
Understanding the Variability of Z-R Relationships Caused by Natural Variations in Raindrop Size Distributions (DSD): Implication of Drop Size and Number
Raindrop Size Distribution Radar Reflectivity Factor
2013/2/26
In the issue of rainfall estimation by radar through the necessary relationship between radar reflectivity Z and rain rate R (Z-R), the main limitation is attributed to the variability of this relatio...
Energy-efficiency of Drop-and-Continue Traffic Grooming
Energy-efficiency Drop-and-Continue Traffic Grooming
2015/5/25
This paper evaluates the energy-savingachievable by performingtraffic grooming in WDM networks with drop-and-continue node architecture. Different grooming strategies are compared in terms of network ...
Flexible and Compact Hierarchical Optical Cross-Connect Node with Waveband Add/Drop Restriction
Fiber optics optical communications Switching circuit
2015/5/22
flexible and compact hierarchical optical cross-connect (HOXC) node that considers a practical waveband add/drop restriction is proposed. We introduce a prototype HOXC system and verify its technical ...
2.3-Tbit/s (23 X 100-Gbit/s) RZ-DQPSK Grooming Switch (Simultaneous Add/Drop, Data Exchange and Equalization) Using Double-Pass LCoS and Bidirectional HNLF
Fiber optics communications Nonlinear optics four-wave mixing
2015/5/22
We present a 2.3-Tbit/s network switching element by exploiting double-pass LCoS technology and bidirectional nonlinear effects inside a single HNLF. We demonstrate 2.3-Tbit/s grooming switch with sim...
Novel Hierarchical Optical Cross-Connect Architecture Utilizing Dedicated Add/Drop Switches that Effectively Offer Colorless and Directionless Capability
Optical communications Switching circuit
2015/5/22
Hierarchical optical cross-connect architectures based on dedicated add/drop switches for terminating traffic is proposed. The architecture can significantly reduce switch scale for implementing color...
Provisioning Schemes Accounting for ROADM Add/Drop Constraints in GMPLS-based WSON
Provisioning Schemes Accounting ROADM Add/Drop Constraints GMPLS-based WSON
2015/5/21
Provisioning schemes exploiting the recently introduced GMPLS extensions for add/drop in WSONs are proposed to effectively handle different ROADM structures and provide a preference on the utilization...
640Gbit/s Reconfigurable OTDM Add-Drop Multiplexer
640Gbit/s Reconfigurable OTDM Add-Drop Multiplexer
2015/5/20
A 640Gbit/s reconfigurable OTDM add/drop multiplexer is demonstrated, using a single periodically-poled Lithium-Niobate waveguide in a counter-propagating configuration.Error free operations confirm t...
Less than 0.19-dB Transient Gain Excursion AGC-EDFA with Digital Control for 20-Channel Add/Drop Equivalent Operation
Transient Gain Excursion AGC-EDFA Digital Control 20-Channel Add/Drop
2015/5/20
We have developed a digitally controlled AGC-EDFA by combining an FF-controlled pump-LD and an FB-controlled VOA. An FPGA is used to finely tune the gain setting of the pump current with a wide dynami...