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201.
Dysarthria is a degenerative disorder of the central nervous system that affects the control of articulation and pitch; therefore, it affects the uniqueness of sound produced by the speaker. Hence, dysarthric speaker recognition is a challenging task. In this paper, a feature-extraction method based on deep belief networks is presented for the task of identifying a speaker suffering from dysarthria. The effectiveness of the proposed method is demonstrated and compared with well-known Mel-frequency cepstral coefficient features. For classification purposes, the use of a multi-layer perceptron neural network is proposed with two structures. Our evaluations using the universal access speech database produced promising results and outperformed other baseline methods. In addition, speaker identification under both text-dependent and text-independent conditions are explored. The highest accuracy achieved using the proposed system is 97.3%. 相似文献
202.
Wireless Networks - With the paradigm of the Internet of things, each object in the physical world can be remotely identified, controlled, and located through networks. Thanks to their low cost and... 相似文献
203.
We discuss a nonperturbative formulation of the Sachdev–Ye–Kitaev (SYK) model. The partition function of the model can be represented as a well-defined functional integral over Grassmann variables in Euclidean time, but it diverges after the transformation to fermion bilocal fields. We note that the generating functional of the SYK model in real time is well defined even after the transformation to bilocal fields and can be used for nonperturbative investigations of its properties. We study the SYK model in zero dimensions, evaluate its large-N expansion, and investigate phase transitions. 相似文献
204.
This paper is devoted to the investigation of the essential approximate point spectrum and the essential defect spectrum of a 2 × 2 block operator matrix on a product of Banach spaces. The obtained results are applied to a two‐group transport operators with general boundary conditions in the Banach space Lp ([–a, a ] × [–1, 1]) × Lp ([–a, a ] × [–1, 1]), a > 0, p ≥ 1 (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
205.
We construct a simple analytic solution of the cubic Neveu—Schwarz (NS) string field theory including the GSO(-) sector. This
solution is analogous to the Erler—Schnabl solution in the bosonic case and to the solution in the pure GSO(+) case previously
proposed by one of us. We construct exact gauge transformations of the new solution to other known solutions for the NS string
tachyon condensation. This gauge equivalence manifestly supports the previous observation that the Erler solution for the
pure GSO(+) sector and our solution containing both the GSO(+) and the GSO(-) sectors have the same value of the action density. 相似文献
206.
207.
I. G. Shebzukhova L. P. Aref’eva 《Bulletin of the Russian Academy of Sciences: Physics》2014,78(8):687-689
The energy of plutonium at interfaces with melts of alkali metals is estimated using a modified version of the electron statistical method. The expressions for the polarization correction and temperature contribution are modified with allowance for changes in the electron density at the interface. The temperature dependence of the energy on the faces of plutonium modifications is calculated over a wide range of temperatures. 相似文献
208.
I. Ya. Aref’eva 《Theoretical and Mathematical Physics》2011,166(3):385-391
We regard an ultrarelativistic hadron moving on a brane embedded in a higher-dimensional space-time as a membrane propagating
on a three-brane. For hadron sizes exceeding the compactification radius and characteristic scales of five-dimensional gravitational
interaction, this membrane can be regarded as a cosmic membrane in the sense that it extends to the infinities. In the five-dimensional
case, a cosmic membrane produces a topological defect similar to the defect produced by a cosmic string in the four-dimensional
space-time. This representation allows calculating the effects of the influence of the hadron mass on the gravitational interaction
of partons belonging to the colliding hadrons. 相似文献
209.
The fabrication technology and the results of the investigations of thin-film secondary-emission alloy coatings based on alkali-earth
metals are described. The vacuum-deposition method is used after the arc-discharge action on coatings in an inert-gas medium.
The discharge-current amplitude amounts to 10 kA for a pulse duration of 30 μs in the pulse mode and 10 A and 1 s in the ac
mode, respectively. It is shown that the secondary-emission properties do not undergo any considerable modifications, which
is related to the formation of solid solutions on the cathode surface and the diffusion of more low-melting components responsible
for the secondary-emission properties at the coating surface. 相似文献
210.