搜索结果: 1-15 共查到“理学 unknown X”相关记录44条 . 查询时间(0.046 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Synthesis of robust memory modes for linear quantum systems with unknown inputs
未知输入 线性量子系统 鲁棒记忆模式
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2023/11/7
In this work, synthesis of robust memory modes for linear quantum passive systems in the presence of unknown inputs has been studied, aimed at facilitating secure storage and communication of quantum ...
The last unknown: Study reveals richest island flora in the world（图）
richest island flora world
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2020/8/14
Imagine if there were 600 species of giraffes, some the size of a shrew, some three stories tall, some with purple spots. Suppose there were reports of rare ones wandering high in the mountains of the...
Previously unknown mechanism causes increased forest water use（图）
unknown mechanism forest water use
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2019/10/22
Researchers have discovered a previously unknown mechanism that causes increased water use in forests, advancing our understanding of forest water cycles and highlighting threats to plants from water ...
EUSO: using high energy cosmic rays and neutrinos as messengers from the unknown universe
fluorescence cosmic rays neutrinos extensive air showers
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2015/9/16
Exploiting the earth atmosphere as a giant detector for the incoming extraterrestrial fl ux of high energy cosmic rays
and cosmic neutrinos, the mission «EUSO-Extreme Universe Space Observatory&...
Adapting to Unknown Sparsity by controlling the False Discovery Rate
Thresholding Wavelet Denoising Minimax Estimation
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2015/8/21
We attempt to recover a high-dimensional vector observed in white noise, where
the vector is known to be sparse, but the degree of sparsity is unknown. We consider
three di®erent ways of deˉnin...
Research spotlights a previously unknown microbial 'drama' playing in the Southern Ocean
Research spotlights previously unknown microbial drama Southern Ocean
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2015/8/4
A team of marine researchers funded by the National Science Foundation (NSF) has discovered a three-way conflict raging at the microscopic level in the frigid waters off Antarctica over natural resour...
Nutrient pollution damages streams in ways previously unknown, ecologists find
Nutrient pollution damages streams previously unknown ecologists find
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2015/3/18
Athens, Ga. - An important food resource has been disappearing from streams without anyone noticing until now.In a new study published March 6 in the journal Science, a team of researchers led by Univ...
A parabolic inverse problem with mixed boundary data. Stability estimates for the unknown boundary and impedance
parabolic inverse problem unknown boundary and impedance Analysis of PDEs
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2011/9/21
Abstract: We consider the problem of determining an unaccessible part of the boundary of a conductor by mean of thermal measurements. We study a problem of corrosion where a Robin type condition is pr...
Reconstructing signals from noisy data with unknown signal and noise covariance
statistics, information theory, statistical mechanics
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2011/10/8
We derive a method to reconstruct Gaussian signals from linear measurements with Gaussian noise. This new algorithm is intended for applications in astrophysics and other sciences. The starting point ...
Reconstructing signals from noisy data with unknown signal and noise covariance
statistics information theory statistical mechanics
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2011/8/17
Abstract: We derive a method to reconstruct Gaussian signals from linear measurements with Gaussian noise. This new algorithm is intended for applications in astrophysics and other sciences. The start...
The secretary problem on an unknown poset
classical secretary problem maximal elements algorithm Combinatorics Probability
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2011/8/26
Abstract: We consider generalizations of the classical secretary problem, also known as the problem of optimal choice, to posets where the only information we have is the size of the poset and the num...
Group theoretic structures in the estimation of an unknown unitary transformation
Group theoretic structures estimation unknown unitary transformation
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2011/3/2
This paper presents a series of general results about the optimal estimation of physical transformations in a given symmetry group. In particular, it is shown how the different
symmetries of the prob...
Belief-propagation-based joint channel estimation and decoding for spectrally efficient communication over unknown sparse channels
belief propagation message passing compressive sensing compressed sensing
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2011/2/24
We consider spectrally-efficient communication over a Rayleigh N-block-fading channel with a K-
sparse L-length discrete-time impulse response (for 0nor
receiv...
Dilation theory in finite dimensions: the possible, the impossible and the unknown
Dilation theory finite dimensions
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2011/2/24
This expository essay discusses a finite dimensional approach to dilation theory. How much of dilation theory can be worked out within the realm of linear algebra? It turns out that some interesting a...
Combinatorial Network Optimization with Unknown Variables: Multi-Armed Bandits with Linear Rewards
Network Optimization Unknown Variables
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2010/11/24
In the classic multi-armed bandits problem, the goal is to have a policy for dynamically operating arms that each yield stochastic rewards with unknown means. The key metric of interest is regret, de...