Shu Y.,Anhui Science and Technology University
Chinese Journal of Electronics | Year: 2017
An increasing number of heterogeneous networks are connected with each other in the cloud. Both cloud controller platforms and cloud service providers have developed rapidly networking support. In most of the cloud networking service, users have to configure a variety of network-layer devices such as switches, subnets in heterogeneous networks. We propose a service-level network model which provides higher-level connectivity and policy abstractions, based on the Software defined networking (SDN) technology to closely integrate applications in the cloud with the heterogeneous networks through programmable interfaces and automatic operations. We describe the architecture of Hetersdn, an SDN controller platform that supports a service-level model for application networking in heterogeneous networks in clouds. © 2017 Chinese Institute of Electronics.
Shi R.-H.,Anhui Science and Technology University
International Journal of Theoretical Physics | Year: 2016
In this paper, we present a novel verifiable quantum encryption scheme, in which a sender encrypts a classical plaintext into a quantum ciphertext, such that only a specified receiver can decrypt the ciphertext and further get the plaintext. This scheme can not only ensure the unconditional security of the plaintext, but can also verify the validness of the plaintext. In addition, we consider its practical applications with key reuse and further present a practical application protocol for secure two-party quantum scalar product. © 2016 Springer Science+Business Media New York
Pan L.,Huazhong University of Science and Technology |
Zeng X.,Huazhong University of Science and Technology |
Zhang X.,Anhui Science and Technology University
Neural Computation | Year: 2011
Differentbiologicalprocesses takedifferent times to be completed, which can also be influenced by many environmental factors. In this work, a realistic definition of nonsynchronized spiking neural P systems (SN P systems, for short) is considered: during the work of an SN P system, the execution times of spiking rules cannot be known exactly (i.e., they are arbitrary). In order to establish robust systems against the environmental factors, a special class of SN P systems, called time-free SN P systems, is introduced,which always produce the same computation result independent of the execution times of the rules. The universality of time-free SN P systems is investigated. It is proved that these P systems with extended rules (several spikes can be produced by a rule) are equivalent to register machines. However, if the number of spikes present in the system is bounded, then the power of time-free SNP systems falls, and in this case, a characterization of semilinear sets of natural numbers is obtained. © 2011 Massachusetts Institute of Technology.
Wang Y.,University of North Carolina at Chapel Hill |
Ma M.,University of North Carolina at Chapel Hill |
Ma M.,Anhui Science and Technology University |
Xiao X.,University of California at Los Angeles |
Wang Z.,University of North Carolina at Chapel Hill
Nature Structural and Molecular Biology | Year: 2012
Most human genes produce multiple splicing isoforms with distinct functions. To systematically understand splicing regulation, we conducted an unbiased screen and identified >100 intronic splicing enhancers (ISEs), clustered by sequence similarity. All ISEs functioned in multiple cell types and in heterologous introns, and patterns of distribution and conservation across pre-mRNA regions were similar to those of exonic splicing silencers. Consistently, all ISEs inhibited use of splice sites from exons. Putative trans-factors of each ISE group were identified and validated. Five distinct groups were recognized by hnRNP H and hnRNP F, whose C-terminal domains were sufficient to render context-dependent activities of ISEs. The sixth group was controlled by factors that either activate or suppress splicing. We provide a comprehensive picture of general ISE activities and suggest new models of how single elements can function oppositely, depending on locations and binding factors. © 2012 Nature America, Inc. All rights reserved.
Cheng L.,Anhui Science and Technology University |
Ren C.,Xiamen University |
Zhang X.,Anhui Science and Technology University |
Yang J.,Anhui University of Science and Technology
Nanoscale | Year: 2013
Based on the recently proposed super valence bond model, in which superatoms can compose superatomic molecules by sharing valence pairs and nuclei for shell closure, the 23c-14e bi-icosahedral Au23(+9) core of Au38(SR)24 is proved to be a superatomic molecule. Molecular orbital analysis reveals that the Au23(+9) core is an exact analogue of the F2 molecule in electronic configuration. Chemical bonding analysis by the adaptive natural density partitioning method confirms the superatomic molecule bonding framework of Au38(SR) 24 in a straightforward manner. © 2013 The Royal Society of Chemistry.
Lu Z.,University of Massachusetts Amherst |
Mo H.J.,Anhui Science and Technology University
Astrophysical Journal | Year: 2015
The empirical model of Lu et al. for the relation between star formation rate and halo mass growth is adopted to predict the classical bulge mass (Mcb)-total stellar mass (M∗) relation for central galaxies. The assumption that the supermassive black hole (SMBH) mass (MBH) is directly proportional to the classical bulge mass, with the proportionality given by that for massive galaxies, predicts a MBH-M∗relation that matches well the observed relation for different types of galaxies. In particular, the model reproduces the strong transition at M∗= 1010.5-1011 Me⊙, below which MBH drops rapidly with decreasing M∗. Our model predicts a new sequence at M∗< 1010.5 M⊙, where MBH ∝ M∗but the amplitude is a factor of ∼50 lower than the amplitude of the sequence at M∗> 1011 M⊙. If all SMBHs grow through similar quasar modes with a feedback efficiency of a few percent, then the energy produced in low-mass galaxies at redshift z ≳ 2 can heat the circumgalactic medium up to a specific entropy level that is required to prevent excessive star formation in low-mass dark matter halos. © 2015. The American Astronomical Society. All rights reserved.
Zhang H.,Anhui Science and Technology University |
Sun Y.,Anhui Science and Technology University
Journal of the Optical Society of America B: Optical Physics | Year: 2010
Based on the expansion of a Gaussian beam in terms of spheroidal vector wave functions given by us and the generalized Lorenz-Mie theory that provides the general framework, a theoretical procedure to determine the scattered fields of a spheroidal particle for incidence of a Gaussian beam described by a localized beam model is presented. As a result, for a dielectric and conducting spheroidal particle, numerical results of the normalized differential scattering cross section are evaluated, and the scattering characteristics are discussed concisely. © 2010 Optical Society of America.
Wang J.,Anhui Science and Technology University
Physical Review B - Condensed Matter and Materials Physics | Year: 2013
Gapless nodal quasiparticles emerge at a low-energy regime of high-T c cuprate superconductors due to the dx2-y2 gap symmetry. We study the unusual renormalizations of the Fermi velocity vF and gap velocity vΔ of these quasiparticles close to various quantum critical points in a superconducting dome. Special attention is paid to the behavior of the velocity ratio, vΔ/vF, since it determines a number of observable quantities. We perform a renormalization-group analysis and show that the velocity ratio may vanish, approach unity, or diverge at different quantum critical points. The corresponding superfluid densities and critical temperatures are suppressed, slightly increased, or significantly enhanced. The effects of three types of static disorders, namely, random mass, random gauge potential, and random chemical potential, on the stability of the system are also addressed. An analogous analysis reveals that both random mass and random gauge potential are irrelevant. This implies that these fixed points of the velocity ratio are stable, and hence observable effects ignited by them are unchanged. However, the random chemical potential is marginal. As a result, these fixed points are broken, and thus, the instabilities of quantum phase transitions are triggered. © 2013 American Physical Society.
Huang D.-S.,Tongji University |
Yu H.-J.,Anhui Science and Technology University
IEEE/ACM Transactions on Computational Biology and Bioinformatics | Year: 2013
Based on all kinds of adjacent amino acids (AAA), we map each protein primary sequence into a 400 by (L-1) matrix M. In addition, we further derive a normalized 400-tuple mathematical descriptors D, which is extracted from the primary protein sequences via singular values decomposition (SVD) of the matrix. The obtained 400-D normalized feature vectors (NFVs) further facilitate our quantitative analysis of protein sequences. Using the normalized representation of the primary protein sequences, we analyze the similarity for different sequences upon two data sets: 1) ND5 sequences from nine species and 2) transferrin sequences of 24 vertebrates. We also compared the results in this study with those from other related works. These two experiments illustrate that our proposed NFV-AAA approach does perform well in the field of similarity analysis of sequence. © 2004-2012 IEEE.
Qi X.,Anhui Science and Technology University
Ocean Engineering | Year: 2014
A practical design method is developed for cooperative tracking control of multiple autonomous underwater vehicles (AUVs). Each AUV is modeled by a system with time-varying parameters, unknown nonlinear dynamics and unknown disturbance. A robust adaptive distributed controller is designed for each AUV such that all AUVs ultimately synchronize to the desired paths with required formation. Moreover, these controllers are distributed in the sense that the controller design for each AUV only requires relative state in formation between itself and its neighbors. Finally, a simulation example demonstrates the effectiveness of the control method. © 2014 Elsevier Ltd.