搜索结果: 91-105 共查到“知识库 无线电物理”相关记录221条 . 查询时间(1.616 秒)
介质的各向异性对转换波成像的影响非常大，直接影响到大炮检距道集的成像。本文以转换波各向异性非双曲旅行时方程为基础，提出了一种简单实用的高精度γ０（纵、横波平均速度比）场的建立方法和构造速度扫描方法。应用这两种方法能够得到较准确的γ０场和转换波均方根速度场，并应用各向异性双平方根散射旅行时方程可精确求取偏移旅行时。据大庆长垣喇嘛甸地区的三维三分量的转换波资料三维Ｋｉｒｃｈｈｏｆｆ叠前时间偏移结果显示...
针对出行示意图的开发，提出了一种基于OpenLayers和TileCache开源技术的WebGIS设计方案。借助OpenLayers的功能实现示意图的展示，采用TileCache实现示意图的缓存机制，降低了开发难度和成本，提高了显示性能和界面功能，获得较好的客户体验。
基于无线传感器网络的展馆定位与管理系统的设计与实现
无线传感器网络 定位 串口通信 MSCOMM控件
2012/3/23
设计了一种基于无线传感器网络的展馆定位与管理系统。由无线传感器网络模块以及上位管理软件组成的定位监测系统实现远程人员实时定位。首先，通过无线传感器网络模块将人员佩带传感器节点的位置信息传递到远端的监控中心，然后利用上位管理软件对接收的数据进行解析，并将人员的位置信息存入到数据库中，最后查询数据库进行人员的实时定位。该系统在实际应用中运行稳定、可靠。系统的移植能力强，同样可以应用到井下人员定位系统中...
We re-examine the question of measuring the weak phase in B → K decays.
Microwave Photon Counter Based on Josephson Junctions
University of Wisconsin, Madison University of Waterloo
2010/11/24
The strong interaction of superconducting in-tegrated circuits with microwave photons forms
the basis of circuit quantum electrodynamics (cQED), an attractive paradigm for scalable
quantum computing...
Nonlinear growth with the microwave intensity in radiation-induced magnetoresistance oscillations
Nonlinear growth with the microwave radiation-induced magnetoresistance oscillations
2010/11/24
We report the observation of inverse-magnetic-field-periodic, radiation-induced magnetoresistance oscillations in GaAs/AlGaAs heterostructures prepared in W. Wegscheider’s group, compare their charact...
Measurement of the B -> Dbar(*)D(*)K branching fractions
Measurement B -> Dbar(*)D(*)K branching fractions
2011/1/4
We present a measurement of the branching fractions of the 22 decay channels of the B0 and B+
mesons to D()D()K, where the D() and D() mesons are fully reconstructed. Summing the
10 neutral mode...
Pure SU(3) glue theories exhibit a decon ning phase transition at a nonzero temperature, Tc.
Using lattice measurements of the pressure, we develop a simple matrix model to describe the
transition r...
Traversable wormhole in the deformed Hořava-Lifshitz gravity
HL gravity traversable wormholes
2010/12/20
Asymptotically flat wormhole solutions are found in the deformed Hoˇrava-Lifshitz gravity. It
turns out that higher curvature terms can not play the role of exotic matters which are crucial to form a...
We have measured the frequency-dependent, complex impedance of thin metal strips in a broad
range of microwave frequencies (45 MHz to 20 GHz). The spectra are in good agreement with
theoretical pred...
Anomalous galvanomagnetism, cyclotron resonance and microwave spectroscopy of topological insulators
cyclotron resonance microwave spectroscopy topological insulators
2010/11/22
The surface quantum Hall state, magneto-electric phenomena and their connection to axion electrodynamics have been studied intensively for topological insulators. One of the obstacles for observing su...
Dynamics of Diffeomorphism Degrees of Freedom at a Horizon
Dynamics of Diffeomorphism Degrees Freedom Horizon
2010/12/20
We define a set of boundary conditions that ensure the presence of a null hypersurface with the
essential characteristics of a horizon, using the formalism of weakly isolated horizons as a guide.We t...
Pulsars as celestial beacons to detect the motion of the Earth
Pulsars celestial beacons motion of the Earth
2010/12/17
We apply a previously proposed relativistic positioning method based on the use of pulsed signals from sources at infinity, to the reconstruction of the world-line of the Earth in the reference frame ...
Towards Biochemical Filter with Sigmoidal Response to pH Changes: Buffered Biocatalytic Signal Transduction
Towards Biochemical Sigmoidal Response Buffered Biocatalytic Signal Transduction
2010/11/22
We realize a biochemical filtering process based on the introduction of a small quantity
of a buffer in a biocatalytic signal-transduction logic system based on the function of an
enzyme, esterase. ...
Hybridization wave as the 'Hidden Order' in URu$_2$Si$_2$
Hybridization wave URu$_2$Si$_2$
2010/11/25
A phenomenological model for the ’hidden order’ transition in the heavy Fermion material
URu2Si2 is introduced. The ’hidden order’ is identified as an incommensurate, momentum-carrying hybridization ...