The structural integrity of slopes in the Ili Valley is critically influenced by inherent characteristics loess, particularly when it subjected to seasonal climatic changes. In present research, a series triaxial shear tests were carried out examine mechanical behavior loess under different dry–wet and frost–thaw cycles. parallel, some testing methods, including scanning electron microscopy (SEM) nuclear magnetic resonance (NMR), applied investigate progressive damage alterations terms...

All-electron calculations play an important role in density functional theory, which improving computational efficiency is one of the most needed and challenging tasks. In model formulations, both nonlinear eigenvalue problem total energy minimization pursue orthogonal solutions. Most existing algorithms for solving these two models invoke orthogonalization process either explicitly or implicitly each iteration. Their suffers from this view its cubic complexity low parallel scalability terms...

Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 31 August 2020Accepted: 11 November 2020Published online: 22 February 2021Keywordscomplex Langevin method, gauge cooling, lattice field theoryAMS Subject Headings65C05Publication DataISSN (print): 1064-8275ISSN (online): 1095-7197Publisher: Society for Industrial and Applied MathematicsCODEN: sjoce3

As one of the most innovative cement-based materials, ultra-high performance concrete (UHPC), with excellent durability and mechanical properties, has been widely used in strengthening existing bridges. In this study, in-situ four-point bending tests were carried out to investigate flexural behavior precast reinforced (RC) hollow slab beams service for 15 years strengthened UHPC. Among them, three UHPC, interface treatment was chiseling, planting rebars, a combination chiseling respectively....

In this paper, an adaptive numerical method is proposed for solving a 2D Schrödinger equation with imaginary time propagation approach. The differential first transferred via Wick rotation to real time-dependent equation, whose solution corresponds the ground state of given system when approaches infinity. temporal then discretized spatially finite element method, and temporally utilizing Crank–Nicolson scheme. A moving mesh strategy based on harmonic maps considered eliminate possible...

Factorization models have been extensively used for recovering the missing entries of a matrix or tensor. However, directly computing all using learned factorization is prohibitive when size matrix/tensor large. On other hand, in many applications, such as collaborative filtering, we are only interested few that largest among them. In this work, propose sampling-based approach finding top tensor which decomposed by CANDECOMP/PARAFAC model. We develop an algorithm to sample with probabilities...

Chemical accuracy serves as an important metric for assessing the effectiveness of numerical method in Kohn--Sham density functional theory. It is found that to achieve chemical accuracy, not only wavefunctions but also Hartree potential, should be approximated accurately. Under adaptive finite element framework, this can implemented by constructing \emph{a posteriori} error indicator based on approximations aforementioned two quantities. However, way results a large amount computational...

In this paper, we introduce a highly accurate and efficient numerical solver for the radial Kohn--Sham equation. The equation is discretized using high-order finite element method, with its performance further improved by incorporating parameter-free moving mesh technique. This approach greatly reduces number of elements required to achieve desired precision. practice, redistribution involves no more than three steps, ensuring algorithm remains computationally efficient. Remarkably, maximum...

The complex Langevin (CL) method is a classical numerical strategy to alleviate the sign problem in computation of lattice field theories. Mathematically, it simple tool compute wide class high-dimensional and oscillatory integrals. However, often observed that CL converges but limiting result incorrect. literature has several unclear or even conflicting statements, making look mysterious. By an in-depth analysis model problem, we reveal mechanism how turns biased as parameter changes,...

The complex Langevin method, a numerical method used to compute the ensemble average with partition function, often suffers from runaway instability. We study regularization of via augmenting action stabilization term. Since introduces biases result, two approaches, named 2R and 3R methods, are introduced recover unbiased result. supplements regression estimate unregularized average, reduces computational cost by coupling reweighting strategy before regression. Both methods can be...

Video surveillance contains a lot of facial occlusion, which brings great difficulties to the detection criminal investigation cases. Current face inpainting algorithms are difficult meet uniqueness requirements comparison, due lack priori information within occluded area. Face sketch drawn by experienced simulated portrait artist according low-quality video or description victim lots useful information. There, this paper proposes algorithm combining and gate convolution. First, sketch, used...

We consider general systems of ordinary differential equations with monotonic Gibbs entropy and introduce an entropic scheme that simply imposes fix after every time step any existing integrator. It is proved in the case, our has only infinitesimal influence on numerical order original scheme, many circumstances, it can be shown does not affect order. Numerical experiments linear Fokker--Planck equation nonlinear Boltzmann are carried out to support analysis.

This paper is based on a curved continuous box girder with variable width. The bracket stress in the process during construction mobile formwork system monitored and analyzed. It has elaborated contents which methods of was analyzed using numerical analysis method. Accordingly, theoretical value related to calculated by finite element software-Midas Civil 2010. model combination transverse longitudinal shift put forward, ensures security construction. A real-time monitoring established,...

Based on the open excavation area from Yulu Station to Wulidian in Chongqing subway circle lines, finite element software Ansys was used establish three-dimensioned model calculate and analyze mechanical characteristic of pile-support supporting. By simulating construction process tunnel, characteristics supporting structure were analyzed stress displacement pile It can summarize that internal force conform requirements safety.

We consider general systems of ordinary differential equations with monotonic Gibbs entropy, and introduce an entropic scheme that simply imposes entropy fix after every time step any existing integrator. It is proved in the case, our has only infinitesimal influence on numerical order original scheme, many circumstances, it can be shown does not affect order. Numerical experiments linear Fokker-Planck equation nonlinear Boltzmann are carried out to support analysis.