14,075 research outputs found
Performance Evaluation of Airport Construction Energy-saving based on DEA Network Design and Performance Analysis
AbstractFuzzy Data Envelopment Analysis (DEA) evaluation model in Airport Construction Energy-saving have improved incomplete weight deficiency of information processing. Firstly, indices values were converted to trapezoid fuzzy numbers, then with incomplete information on indices weights as constraints, a fuzzy DEA model with outputs only and preference was established, and then by applying the α-cut approach, the model was transformed to a family of crisp DEA models and was solved. Experiments demonstrated the feasibility and applicability of the method
Complexity growth rates for AdS black holes in massive gravity and gravity
The "complexity = action" duality states that the quantum complexity is equal
to the action of the stationary AdS black holes within the Wheeler-DeWitt patch
at late time approximation. We compute the action growth rates of the neutral
and charged black holes in massive gravity and the neutral, charged and
Kerr-Newman black holes in gravity to test this conjecture. Besides, we
investigate the effects of the massive graviton terms, higher derivative terms
and the topology of the black hole horizon on the complexity growth rate.Comment: 11 pages, no figur
Methods for linear optical quantum Fredkin gate
We consider the realization of quantum Fredkin gate with only linear optics
and single photons. First we construct a heralded Fredkin gate using four
heralded controlled-not (CNOT) gates. Then we simplify this method to a
post-selected one utilizing only two CNOT gates. We also give a possible
realization of this method which is feasible with current experimental
technology. Another post-selected scheme requires time entanglement of the
input photons but needs no ancillary photons.Comment: 5 pages, 5 figure
On determination of the geometric cosmological constant from the OPERA experiment of superluminal neutrinos
The recent OPERA experiment of superluminal neutrinos has deep consequences
in cosmology. In cosmology a fundamental constant is the cosmological constant.
From observations one can estimate the effective cosmological constant
which is the sum of the quantum zero point energy
and the geometric cosmological constant . The
OPERA experiment can be applied to determine the geometric cosmological
constant . It is the first time to distinguish the contributions of
and from each other by experiment. The
determination is based on an explanation of the OPERA experiment in the
framework of Special Relativity with de Sitter space-time symmetry.Comment: 7 pages, no figure
The “Competition” for Training Cross Border E-commerce Talents in China on the Background of “Internet Plus”
Under the background of “Internet plus,” more and more traditional industries have been integrated into the Internet through information technology. The international trade (foreign trade) industry has constantly been networked, informalized and electrolyzed. Based on the statistical analysis of the current development trend and market demand for cross-border e-commerce talents, this paper attempts to find out the causes of the current multidisciplinary “competition” for cross-border e-commerce talent training, analyze the advantages and disadvantages of this "competition," and put forward the development strategies of multidisciplinary cross-border e-commerce talent training. This study will be of essential reference and significance for applied universities, colleges and higher vocational colleges to adjust the cross-border e-commerce talent training positioning, orientation and professional layout
MASTERKEY: Practical Backdoor Attack Against Speaker Verification Systems
Speaker Verification (SV) is widely deployed in mobile systems to
authenticate legitimate users by using their voice traits. In this work, we
propose a backdoor attack MASTERKEY, to compromise the SV models. Different
from previous attacks, we focus on a real-world practical setting where the
attacker possesses no knowledge of the intended victim. To design MASTERKEY, we
investigate the limitation of existing poisoning attacks against unseen
targets. Then, we optimize a universal backdoor that is capable of attacking
arbitrary targets. Next, we embed the speaker's characteristics and semantics
information into the backdoor, making it imperceptible. Finally, we estimate
the channel distortion and integrate it into the backdoor. We validate our
attack on 6 popular SV models. Specifically, we poison a total of 53 models and
use our trigger to attack 16,430 enrolled speakers, composed of 310 target
speakers enrolled in 53 poisoned models. Our attack achieves 100% attack
success rate with a 15% poison rate. By decreasing the poison rate to 3%, the
attack success rate remains around 50%. We validate our attack in 3 real-world
scenarios and successfully demonstrate the attack through both over-the-air and
over-the-telephony-line scenarios.Comment: Accepted by Mobicom 202
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