ABSTRACT Prestack reverse time migration (RTM) is a very useful tool for seismic imaging but has mainly three bottlenecks: highly intensive computation cost, low‐frequency band noise and massive memory demand. Traditionally, PC‐clusters with thousands of nodes are used to perform RTM it too expensive small companies oilfields. In this article, we use Graphic Processing Unit (GPU) architecture, which cheaper faster implement obtain an order magnitude higher speedup ratio solve the problem...

Gossip algorithms are widely used in modern distributed systems, with applications ranging from sensor networks and peer-to-peer to mobile vehicle social networks. A tremendous research effort has been devoted analyzing improving the asymptotic rate of convergence for gossip algorithms. In this work we study finite-time deterministic gossiping. We show that there exists a symmetric algorithm converges finite time if only number network nodes is power two, while always an asymmetric...

Hyperlipidemia is a frequent metabolic disorder that closely associated with diet. It believed brown rice, containing the outer bran layer and germ, beneficial for remission of hyperlipidemia. This study established rat model hyperlipidemia by feeding high-fat The hypolipidemic potential germinated rice (Gbrown) black (a black-pigmented Gblack) were explored in rats, mainly aspects blood lipids, lipases, apolipoproteins, inflammation. gut microbiota hyperlipidemic rats receiving diverse...

Abstract Pre‐stack reverse time migration (RTM) is a very useful tool for seismic imaging. But it has not been widely used because of the highly intensive computation cost, imaging noise and massy memory demand. In this paper, we present implementation process RTM analyze stability condition dispersion relation finite difference (FD) method. For problem use Graphic Processing Unit (GPU) architecture to realize get an order magnitude higher speedup ratio compared traditional CPU architecture....

This article presents graph theoretic conditions for the controllability and accessibility of bilinear systems over special orthogonal group, linear group general respectively, in presence drift terms. The controlled terms are assumed to take place between pairwise states. Such naturally induce two interaction graphs: one from drift, another dynamics. As a result, system or becomes property graphs view classical Lie algebra rank condition. We establish systemic way transforming bracket...

Abstract The geological structure in the mountainous regions of western China is quite complicated, and elevation varies violently. At present, main approach for seismic data imaging prestack Kirchhoff time migration, however, violent variation surface makes datum plane selection migration very difficult. This article proposed a new method through modifying routine travel computation, this can greatly raise effect region with obvious elevation. In addition, paper also introduced application...

Solving eigenvalue problems is crucially important for both classical and quantum applications. Many well-known numerical eigensolvers have been developed, including the QR power methods computers, as well phase estimation (QPE) method variational eigensolver computers. In this work, we present a different type of that uses fixed-point search to solve Type II problems. This serves an complement QPE method, which I eigensolver. We show oracle our query-based can be efficiently constructed...

This article presents integral-type edge event- and self-triggered policies for Lipschitz nonlinear multiagent systems, in which only states are employed by all controllers. An triggering function is designed to determine event instants, the considered system can achieve Zeno-free triggering. policy then avoid sensors' continuous measurements. Compared traditional event-triggered schemes, proposed strategies have relaxed conditions lowered frequencies. Also, algorithm requirement measurement...

Bavachalcone is an important active component of the traditional Chinese medicine Fructus Psoraleae. The inhibitory effect bavachalcone on α-glucosidase activity reported for first time and mechanism elucidated by molecular docking. inhibition (IC50 15.35 ± 0.57 μg/mL) was significantly superior to acarbose 2.77 0.09 mg/mL). Inhibition type mixed competitive non-competitive. Molecular docking suggested this stems from hydrogen bonds formed with trp391, arg428, trp710 residues α-glucosidase.

This paper proposes and investigates a framework for clique gossip protocols. As complete subnetworks, the existence of cliques is ubiquitous in various social, computer, engineering networks. By gossiping, nodes interact with each other along sequence cliques. Clique-gossip protocols are defined as arbitrary linear node interactions where states vectors evolving dynamical systems. Such become clique-gossip averaging algorithms when scalars under rules. We generalize classical notion line...

We consider a basic quantum hybrid network model consisting of number nodes each holding qubit, for which the aim is to drive consensus in sense that all qubits reach common state. Projective measurements are applied serving as control means, and measurement results exchanged among via classical communication channels. In this way quantum-opeartion/classical-communication nature networks captured, although coherent states joint operations not taken into consideration order facilitate clear...

This paper proposes and investigates a Boolean gossip model as simplified but non-trivial probabilistic network. With positive node interactions, in view of standard theories from Markov chains, we prove that the states asymptotically converge to an agreement at binary random variable, whose distribution is characterized for large-scale networks by mean-field approximation. Using combinatorial analysis, also successfully count number communication classes network explicitly terms topology...

Abstract:

In this article, we study systems of Boolean equations over a network, where each node in the network possesses only one equation from system. The assigned at any particular is <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">private</i> known to only, and aim article develop distributed algorithms that allow all nodes obtain solutions without exchanging their local equations. First, observe can be locally lifted system linear algebraic under...

For various $L^p$-spaces ($1\leq p<\infty $) we investigate the minimum number of complex-valued functions needed to generate an algebra dense in space. The results depend crucially on regularity imposed generators. $\mu $ a positive re

This paper presents graph theoretic conditions for the controllability and accessibility of bilinear systems over special orthogonal group general linear group, respectively, in presence drift terms. Such naturally induce two interaction graphs: one from drift, another controlled dynamics. As a result, system or becomes property graphs view classical Lie algebra rank condition. We establish systemic way transforming bracket operations underlying algebra, into specific removing creating links...