搜索结果: 1-15 共查到“知识库 理学 shift”相关记录94条 . 查询时间(0.203 秒)
Dynamic Stokes Shift in Green Fluorescent Protein Variants
GFP solvation response ultrafast
2016/5/25
Solvent reorganization around the excited state of a chromophore leads to an emission shift to longer wavelengths during the excited-state lifetime. This solvation response is absent in wild-type gree...
Zd SHIFTS OF FINITE TYPE WITHOUT EQUAL ENTROPY FULL SHIFT FACTORS
Zd SHIFTS FINITE TYPE ENTROPY FULL SHIFT
2015/9/29
For d ≥ 2, we use results of Hochman and Meyerovitch to construct examples of Zd shifts of finite type of entropy log N, N ∈ N, which cannot factor topologically onto the Zd Bernoulli shift on N symbo...
PATH METHODS FOR STRONG SHIFT EQUIVALENCE OF POSITIVE MATRICES
PATH METHODS STRONG SHIFT EQUIVALENCE POSITIVE MATRICES
2015/9/29
In the early 1990’s, Kim and Roush developed path methods for establishing strong shift equivalence (SSE) of positive matrices over a dense subring U of R. This paper gives a detailed, unified and gen...
STRONG SHIFT EQUIVALENCE AND THE GENERALIZED SPECTRAL CONJECTURE FOR NONNEGATIVE MATRICES
STRONG SHIFT EQUIVALENCE GENERALIZED SPECTRAL CONJECTURE NONNEGATIVE MATRICES
2015/9/29
Given matrices A and B shift equivalent over a dense subring R of R,with A primitive, we show that B is strong shift equivalent over R to a primitive matrix. This result shows that the weak form of th...
THE NONCOMMUTATIVE WIENER LEMMA,LINEAR INDEPENDENCE,AND SPECTRAL PROPERTIES OF THE ALGEBRA OF TIME-FREQUENCY SHIFT OPERATORS
NONCOMMUTATIVE WIENER LEMMA LINEAR INDEPENDENCE SPECTRAL PROPERTIES OF THE ALGEBRA TIME-FREQUENCY SHIFT OPERATORS
2015/9/29
In this paper we analyze the Banach *-algebra of time-frequency shifts with absolutely summable coefficients. We prove a noncommutative version of the Wiener lemma. We also construct a faithful tracia...
Global nonlinear optimization for the estimation of static shift and interpretation of 1-D magnetotelluric sounding data
Magnetotelluric sounding global nonlinear optimization static shift TE and TM mode apparent resistivity phase
2015/8/27
In the presence of conducting inhomogeneities in near-surface structures, apparent resistivity data in magnetotelluric sounding can be severely distorted. This is due to electric fields generated from...
Computing the threshold shift for general channels
Threshold the probability curve noise the binary
2015/8/21
The ‘threshold’ of a code ensemble can be defined as the noise level at which the block error probability curve crosses 1/2. For ensembles of low-density parity check codes used over the binary erasur...
Understanding how climate varies in time is a central issue of climate research. Of particular interest are climate variations which occur within the human lifespan, say over 5- to 100-y time scales. ...
Critical Temperature Shift in Weakly Interacting Bose Gas
High performance monte carlo quantum bose gas the scattering
2014/12/22
With a high-performance Monte Carlo algorithm we study the interaction-induced shift of the critical point in weakly interacting three-dimensional |ψ|4 theory (which includes quantum Bose gas). In ter...
A regime shift in Lake Superior ice cover, evaporation, and water temperature following the warm El Nin˜ o winter of 1997–1998
ice cover evaporation water temperature
2014/11/28
Significant trends in Lake Superior water temperature and ice cover have been observed in recent decades, and
these trends have typically been analyzed using standard linear regression techniques. Al...
A regime shift in Lake Superior ice cover, evaporation, and water temperature following the warm El Niño winter of 1997–1998
Lake Superior ice cover evaporation water temperature following the warm El Nino winter
2014/10/16
Significant trends in Lake Superior water temperature and ice cover have been observed in recent decades, and these trends have typically been analyzed using standard linear regression techniques. Alt...
Shift of effective lightning areas during pre to post period of solar cycle minimum of 2008-2009 as determined from Schumann resonance studies at Agra, India
Schumann resonance Thunderstorm activity Effective lightning areas
2015/8/18
Employing a set of 3-component search coil magnetometer, Schumann resonance studies have been in progress at Agra (Geograph. lat. 27.2°N, long. 78°E), India since 01 April, 2007. We have analysed the ...
A decadal decline in relative abundance and a shift in microphytoplankton composition at a long-term coastal station off southeast Australia
A decadal decline microphytoplankton composition
2014/4/2
In this study, we examined 11 yr (1998–2009) of water samples collected from Port Hacking coastal monitoring
station 8 km offshore from Sydney, Australia, to assess changes in the microphytoplankton ...
改进的mean shift目标跟踪算法
目标跟踪 均值偏移 模板更新 抗遮挡
2013/11/19
提出一种改进的均值偏移（mean shift， MS）目标跟踪算法，用于提高模板漂移和大面积遮挡情况下视觉目标跟踪算法的鲁棒性和准确性。首先判断目标是否存在遮挡现象，当遮挡未发生时，采用原始MS算法跟踪目标，利用选择性分量更新策略对目标模板进行更新，减少模板漂移的影响|当遮挡发生后，利用非对称核函数模型对候选目标模型进行矫正，降低遮挡像素点对MS矢量和目标跟踪稳定性的影响。实验结果表明，改进的跟踪...
为了提高移动机器人目标跟踪系统在复杂环境中的跟踪性能，提出在双层定位机制下采用基于自适应核函数的Mean Shift算法实现目标跟踪。利用射频识别器件（RFID）检测携带标签的目标，实现外层粗定位并确定感兴趣区域（ROI）；在内层则根据对视差图的ROI的处理结果确定初始搜索窗口，然后应用基于自适应核函数的Mean Shift算法在从立体相机获得的左图中应用基于自适应核函数的Mean Shift算法...