bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hybrid Rabi interactions with traveling states of light
Authors: Park Kimin , Laurat Julien , Filip Radim 
Published: January 2020

Abstract
Hybrid interactions between light and two-level systems and their nonlinear nature are crucial components of advanced quantum information processing and quantum networks. Rabi interaction (RI) exhibits the hybrid nonlinear nature, but its implementation is challenging at optical frequencies where the rotating wave approximation (RWA) is valid. Here, we propose a setup to conditionally induce RI between discrete variable and continuous variable of traveling beams of light. We show that our scheme can generate RI on weak states of light, where signatures of the nonlinear quantum effects are preserved for typical experimental losses. These results prove that a hybrid RI can be realized in all-optical setups, and open a way to experimental investigations of nonlinear quantum optics beyond RWA.
A universal form of localized complex potentials with spectral singularities
Authors: Zezyulin Dmitry A , Konotop Vladimir V 
Published: January 2020

Abstract
We establish necessary and sufficient conditions for localized complex potentials in the Schrödinger equation to enable spectral singularities (SSs) and show that such potentials have the universal form

U

(
x
)

=
−

w

2

(
x
)

−

i
w

x

(
x
)

+

k

0

2

, where w(x) is a differentiable function, such that

lim

x
→
±
∞

w
(
x
)

=
∓

k

0

, and k
0 is a non-zero real. We also find that when k
0 is a complex number, then the eigenvalue of the corresponding Shrödinger operator has an exact solution which, depending on k
0, represents a coherent perfect absorber (CPA), laser, a localized bound state, a quasi bound state in the continuum (a quasi-BIC), or an exceptional point (the latter requiring additional conditions). Thus, k
0 is a bifurcation parameter that describes transformations among all those solutions. Additionally, in a more specific case of a real-valued function w(x) the resulting potential, although not being




symmetric, can feature a self-dual SS associated with the CPA-laser operation. At this moment, the complex potential has exactly two coexisting SSs at different points of the continuous spectrum. In the space of the system parameters, the transition through each self-dual SS corresponds to a bifurcation of a pair of complex-conjugate propagation constants from the continuum. The bifurcation of a first complex-conjugate pair corresponds to the phase transition from purely real to complex spectrum.
Second harmonic magnetoacoustic responses of magnetic nanoparticles in magnetoacoustic tomography with magnetic induction*
Authors: Guo Gepu , Gao Ya , Li Yuzhi , Ma Qingyu , Tu Juan , Zhang Dong 
Published: January 2020

Abstract
Due to the unique magnetic, mechanical and thermal properties, magnetic nanoparticles (MNPs) have comprehensive applications as the contrast and therapeutic agents in biomedical imaging and magnetic hyperthermia. The linear and nonlinear magnetoacoustic responses determined by the magnetic properties of MNPs have attracted more and more attention in biomedical engineering. By considering the relaxation time of MNPs, we derive the formulae of second harmonic magnetoacoustic responses (2H-MARs) for a cylindrical MNP solution model based on the mechanical oscillations of MNPs in magnetoacoustic tomography with magnetic induction (MAT-MI). It is proved that only the second harmonic magnetoacoustic oscillations can be generated by MNPs under an alternating magnetic excitation. The acoustic pressure of the 2H-MAR is proportional to the square of the magnetic field intensity and exhibits a linear increase with the concentration of MNPs. Numerical simulations of the 2H-MAR are confirmed by the experimental measurements for various magnetic field intensities and solution concentrations using a laser vibrometer. The favorable results demonstrate the feasibility of the harmonic measurements without the fundamental interference of the electromagnetic excitation, and suggest a new harmonic imaging strategy of MAT-MI for MNPs with enhanced spatial resolution and improved signal-to-noise ratio in biomedical applications.
Mass spectra and wave functions of the doubly heavy baryons with JP=1+ heavy diquark cores *
Authors: Li Qiang , Chang Chao-Hsi , Qin Si-Xue , Wang Guo-Li 
Published: January 2020

Abstract
Mass spectra and wave functions of the doubly heavy baryons are computed assuming that the two heavy quarks inside a baryon form a compact heavy ‘diquark core’ in a color anti-triplet, and bind with the remaining light quark into a colorless baryon. The two reduced two-body problems are described by the relativistic Bethe-Salpeter equations (BSEs) with the relevant QCD inspired kernels. We focus on the doubly heavy baryons with

heavy diquark cores. After solving BSEs in the instantaneous approximation, we present the mass spectra and the relativistic wave functions of the diquark cores, and of the low-lying baryon states

and

with flavors

,

and

. A comparison with other approaches is also made.
A holographic description of theta-dependent Yang-Mills theory at finite temperature *
Authors: Li Si-Wen 
Published: January 2020

Abstract
Theta-dependent gauge theories can be studied using holographic duality through string theory in certain spacetimes. By this correspondence we consider a stack of N
0 dynamical D0-branes as D-instantons in the background sourced by N
c coincident non-extreme black D4-branes. According to the gauge-gravity duality, this D0-D4 brane system corresponds to Yang-Mills theory with a theta angle at finite temperature. We solve the IIA supergravity action by taking account into a sufficiently small backreaction of the Dinstantons and obtain an analytical solution for our D0-D4-brane configuration. Subsequently, the dual theory in the large N
c limit can be holographically investigated with the gravity solution. In the dual field theory, we find that the coupling constant exhibits asymptotic freedom, as is expected in QCD. The contribution of the theta-dependence to the free energy gets suppressed at high temperatures, which is basically consistent with the calculation using the Yang-Mills instanton. The topological susceptibility in the large N
c limit vanishes, and this behavior remarkably agrees with the implications from the simulation results at finite temperature. Moreover, we finally find a geometrical interpretation of the theta-dependence in this holographic system.
Antiproton production in heavy-ion collisions at subthreshold energies *
Authors: Feng Zhao-Qing 
Published: January 2020

Abstract
Within the framework of the Lanzhou quantum molecular dynamics model, the deep subthreshold antiproton production in heavy-ion collisions has been investigated thoroughly. The elastic scattering, annihilation and charge exchange reactions associated with antiproton channels are implemented in the model. The attractive antiproton potential extracted from the G-parity transformation of nucleon selfenergies reduces the threshold energies in meson-baryon and baryon-baryon collisions, and consequently enhances the antiproton yields to some extent. The calculated invariant spectra are consistent with the available experimental data. The primordial antiproton yields increase with the mass number of the colliding system. However, annihilation reactions reduce the antiproton production which becomes independent of the colliding partners. Anti-flow phenomena of antiprotons correlated with the mean field potential and annihilation mechanism is found by comparing them with the proton flows. Possible experiments at the high-intensity heavy-ion accelerator facility (HIAF) in China are discussed.
Nonequilibrium processes of power and enviromental resistance of reinforced concrete structures to progressive collapse
Authors: Kolchunov V I , Androsova N B 
Published: January 2020

Abstract
The problems of calculating the parameters of non-equilibrium power and environmental resistance of reinforced concrete elements of a structural system under special effects are considered. A static-dynamic diagram of the deformation of corrosion-damaged concrete during overlimit impact caused by the sudden removal of a supporting structure is constructed. The section of this diagram is described by the analytical dependence for change in the strength of loaded and corrosion-damaged concrete from time, which takes into account, on the one hand, the process of the increasing strength of “healthy” concrete in time (theory of concrete aging), and on the other, the process of the degradation of an aggressive environment on concrete. A section of the dynamic deformation diagram is described by the Kelvin-Voigt model in a version of the theory of plasticity of concrete G.A. Genius, which corresponds to the conditions of deformation of concrete as an elastic-viscous-plastic material. The dynamic tensile strength of corrosion-damaged concrete is taken into account by the coefficient of increase in the dynamic strength of the material based on the two-element model of its deformation.
Measured and forecast settlements of buildings near deep pits in Vietnam
Authors: Nikiforova N S , Van-Hoa Nguyen , Alekseev G V 
Published: January 2020

Abstract
The design and construction of underground facilities in major cities in Vietnam, such as Hanoi and Ho Chi Minh city, have currently been expanded. Digging deep excavation pits for underground spaces or subway stations can lead to settlements of the surrounding buildings. Under the soft soils or water-saturated clay soils, the construction of underground spaces causes additional settlements to the surrounding soil mass. Therefore, it is necessary consider the technological settlement, which is the effect of the construction process of deep excavations, to forecast the total settlement of surrounding buildings. This study proposes an equation to predict the building subsidence due to the influence of deep excavation accounting the technological settlement.
Piled raft foundation assessment based on geotechnical monitoring results
Authors: Gryaznova Elena 
Published: January 2020

Abstract
Article discusses data analysis of geodetic and strain gauge monitoring of stress-strain state of high-rise building foundation. Recommendations are given to improve monitoring system by expanding its analytical component through use of computer modeling, accounting for the work of foundation structure and soil base under gradual increase in number of stories of the building. Monitoring data is compared with results of calculations and design studies. Their qualitative and quantitative convergence is notable. Recommendations are given for further foundations design of high-rise buildings.
Flexural behavior of RC beam strengthened by stay in place SFRC sheet formwork
Authors: Kapustin Dmitriy , Zeid Kilani Leis 
Published: January 2020

Abstract
The paper presents results of experimental and numerical modeling of flexural behavior of RC beam strengthened be stay in place SFRC sheet formwork in a tensioned zone. Analysis of influence of the SFRC on crack propagation. As a result monolithic concrete provides the perception of tensile forces before the formation of main cracks in the steel fiber concrete.
Comparison between Analytical Method and Numerical Model for Footings on Soft Clay Supported by Stone Columns
Authors: Znamenskii V V , Sayed D A 
Published: January 2020

AbstractThe increase in population in many locations and the value of land has increased significantly. This has made the use of all areas including soft problematic soils inevitable. Due to the lack of bearing capacity of these soils, different methods of soil improvement techniques such as stone columns are used. In this study, four different analytical methods published before are briefly motioned. Also, three-dimensional (3D) numerical analyses were carried out on a stone column under footing on the soft clay soil. The main point of the current paper is to make a comparison between a numerical model and different analytical methods to represent a footing on the soft clay soil reinforced by a group of stone columns.
Calculation of the stiffness of reinforced concrete structures under the action of torsion and bending
Authors: Kolchunov V I , Dem’yanov A I , Naumov N V , Mikhaylov M M 
Published: January 2020

AbstractThe development of methods for calculating the stiffness of reinforced concrete structures with cracks at the limit states is an urgent task. The proposed method implies that the spatial cracks develop on special bilinear surfaces. It involves dividing a rectangular section into a series of squares, which are subsequently replaced by the circles inscribed in them. This approach requires the introduction of the concept of “equivalence” between the torsional stiffness characteristics of a rectangular section and the circumscribed circle. The equation for determining the tangential torsional stresses (taking into account the deplanation) at any point of the cross section is written in a cylindrical and Cartesian coordinate system. Two variants of modelling a real crack are proposed: in the form of stepwise located three-dimensional finite elements that are detached in common nodes, or using an imaginary crack along which pairs of finite elements are picked out. So, we use a special double cantilever model for the calculation. Having a picture of the applied force and deformation loads (crack opening) in the console nodes, it is possible to determine the values of the work in the state: “before detach” and “after detach” of the double-element model.
Buckling load of an infinitely long cylindrical shell interacting with the soil environment
Authors: Kosytsyn Sergey , Akulich Vladimir 
Published: January 2020

Abstract
The article considers the problems of numerical computational stability analysis for an infinitely long cylindrical shell interacting with the soil environment. Several spatial computational models of “the shell – the soil” system have been compiled to determine the buckling load and the buckling mode. The interaction of the shell and the soil environment is provided by contact pairs located on the respective surfaces. Contact pairs with a rigid connection between bodies and contact pairs with the detachment possibility of interacting bodies are used. Contact pairs with and without the friction coefficient are also used. The problem is solved in linear and nonlinear statement. The materials of the shell and the soil environment are given by elastic-plastic models of Mohr-Coulomb and Drucker-Prager. The buckling loads are defined relative to the effective gravity load. The buckling loads and the buckling modes of the cylindrical shell are obtained as a result of numerical computational stability analysis. The comparative analysis of the received buckling loads is presented and the corresponding conclusions are given.
The consideration of compliance of structural joints in the numerical calculation of large-panel buildings
Authors: Malakhova A N , Davletbaeva D A 
Published: January 2020

Abstract
The article considers the determination of compliance of vertical joints of wall panels of large-panel buildings made on embedded parts. The simulation of these joints in the calculation model of the structural system of a large-panel building is shown. The algorithm for determining the compliance of vertical joints of wall panels of large-panel buildings is described using the «New displacement program» developed by the authors of this article. The service opportunities of the program for the presentation of calculation results are shown. The comparative results of determining the compliance of wall panels vertical joints using two types of connecting parts are presented, which demonstrates the capabilities of the program to investigate the operation of vertical joints in large-panel buildings with different structural solutions of joints.
3D modeling of supply and exhaust ventilation in the concept of passive building in the software package Autodesk 3ds Max
Authors: Korol O A , Petrov A A , Shreiber K A 
Published: January 2020

Abstract
The main issue of the study is the problem of the possibility and feasibility of 3D modeling, and the use of supply and exhaust systems for heat and moisture recovery in the design of a passive building, using a 2-stage scheme of air heating in climatic and geographical conditions for the city of Kaliningrad. After all, using this mechanical ventilation and air heating scheme in a passive building, it is possible to reduce annual energy costs by 3-4 times. The higher capital costs of a passive building are offset by lower operating costs due to a significant reduction in energy consumption.
Monetary evaluation of the reduced service life of asphalt pavements caused by the interlayer bond
Authors: Hristov B D , Wellner F 
Published: January 2020

Abstract
The sustainability of asphalt pavements is highly depending on the quality of the interlayer bond (IB) between the different asphalt layers. In this project a complicated apparatus for cycling testing of the interlayer bond has been developed in order to determine the shear stiffness at the interface between asphalt layers taking into account the combined effect of varying and repeated traffic loading, acceleration and braking processes and temperature. A universal master function for analytical assessment of the IB shear stiffness has been established for any IB condition using the experimental results. Another function for completely fatigued IB has been developed as well. Both functions have been implemented into a finite element program to estimate the fatigue status of asphalt pavements for different bond qualities over a service life of 30 years using the German method for computational design according to RDO Asphalt 09. It has been succeeded to make a monetary evaluation of the reduced service life of asphalt pavements caused by interlayer bonds of different quality and to assess the construction cost penalty.
Analytical representation for the problem of a loaded hollow layered cylinder taking into account the creep of its layers
Authors: Bobyleva T N , Shamaev A S 
Published: January 2020

Abstract
The paper deals with a cylindrical hollow rod with a layered structure along the radius. Layers consist of isotropic elastic creeping materials. An analytical solution is given for the problem of the stress-strain state of such rod. Tensile and bending stiffness can be presented in analytical form. An algorithm is proposed for constructing an analytical solution to the problem of various loading of a layered rod consisting of elastic-creeping layers in the presence of radial symmetry.
Simulation of free vibrations of a thick plate without simplifying hypotheses
Authors: Usarov Davronbek , Turajonov Kodirjon , Khamidov Saidjon 
Published: January 2020

Abstract
The paper is devoted to the simulation of free vibrations of orthotropic thick plates taking into account internal forces, moments and bimoments. To solve the problem, equations of motion of a plate are built, described by a six-equation system, constructed in the framework of a simplified version of the bimoment theory of thick plates. As an example, consider the problem of determining natural frequencies of thick isotropic and orthotropic fixed plates under transverse vibrations, taking into account the transverse shear and compression along the thickness.
Ultimate stress state of a plate made of orthotropic material under uniform internal pressure
Authors: Blokhina N S 
Published: January 2020

Abstract
The paper regards ultimate stress state of an unbounded plate with a circular opening made of orthotropic material. Unlike isotropic material, this problem is not axisymmetric. The solution to the problem was carried out by an iterative method. As a first approximation, a corresponding problem solution was used, assuming that the radial and tangential stresses are the main ones. The obtained solution is compared with the stress state of the plate, achieved under the assumption that the problem is axisymmetric.
Creation of the information system based on the integrated evaluation of a construction object at various life cycle stages
Authors: Kozhevnikov M M , Ginzburg A V , Kozhevnikova S T 
Published: January 2020

Abstract
This work contains analysis of the problems regarding the development and maintaining of executive documents on the construction, reconstruction and overhaul process. The study considers the following matters: goal-setting for elaborating process of an object operational model; improvement of the construction organization efficiency in order to reduce labor and time costs on executive documentation preparation and processing, as well as to minimize the number of mistakes contained in it.
On one method of finding optimal control in construction industry
Authors: Titova T. 
Published: January 2020

Abstract
In this paper we consider options for solving optimal control problems with a quadratic quality criterion. There are optimal management tasks in the construction industry also. For example, in optimizing the construction technology of large complexes, construction work cycles at the facilities. A quadratic quality criterion leads to Riccati matrix differential equations that are generally not solvable in quadratures. In this paper we consider solution options in the case of a stationary system. We find a symmetric solution of algebraic matrix Riccati equation. We offer some new analytical methods for solving this nonlinear equation in various cases.
Losses in the manufacture of wooden building structures
Authors: Seregin N G 
Published: January 2020

Abstract
Wood properties have successfully established themselves in the building structures. Very important to know expected wood losses in production. Losses are considered throughout the process of woodworking from sawmilling to obtaining glued blank. Research results were an assessment of losses in production of glued window beam as an example and substantiation of recommendations to production of wooden window blocks for choosing the type of primary source material: roundwood or edged sawn timber.
The mathematical model of environmental waters purification
Authors: Skolubovich Yu.L. , Skolubovich A.Y. , Volkov D.D. , Krasnova T.A. , Gogina E.S. 
Published: January 2020

Abstract
This article describes the use of the stochastic approach, in particular, mass service theory and the development of its methods, adapted directly to the coagulation process as a mathematical tool. The coagulation process will be concerned as a) supplying water to the mixer, b) processing it with reagents (coagulants), c) settling for the mathematical analysis of water clarification effectiveness.
Methods and models for building bank branches. A Multicriteria approach for a decision-making tool
Authors: Bellintani S , Celani A , Ciaramella G 
Published: January 2020

AbstractThis work intends to study the latest trends in building branch systems, testing a mathematical model in the Italian banking sector at its current state of art. Particular attention is given to which is the relationship that links evolution, in terms of technology and needs, both of bank and customers, with physical spaces (branches).The questions that will be possibly answered are: what is the value of a banking branch system and how building strategies can impact on it? How should they be located in the territory? What construction form should they take to adapt to the new needs?A meta-design has been developed to identify the guidelines to be followed and the interventions to be taken in practice, by simulating a business case that, through the application of a multi criteria analysis, can be a reference for credit institutions. The developed methodology is then applied to a portion of the city of Milan, in order to practically experiment the feasibility and the outcomes.