bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cross section investigation in dp breakup reaction at the intermediate energies
Authors: Janek M , Ladygin V P , Gurchin Yu V , Isupov A Yu , Karachuk J-T , Khrenov A N , Kurilkin P K , Livanov A N , Mezhenska O , Piyadin S M , Reznikov S G , Terekhin A A , Vnukov I E 
Published: January 2020

Abstract
The dp breakup reaction has been investigated by the scintillation detectors placed at the vicinity of Internal Target Station (ITS) of Nuclotron. Data have been obtained at the angles of 19° - 54° in the laboratory frame at the deuteron energy of 300 - 500 MeV in a various detector configurations in which the sensitivity to the three nucleon correlations and relativistic effects are assumed. Preliminary results of the five fold differential cross section for particular detector configurations of the dp breakup reaction at 400 MeV of deuteron energy have been obtained.
Spectra and polarizations of prompt J/ψ at the NICA within collinear parton model and parton Reggeization approach
Authors: Karpishkov A. V. , Nefedov M. A. , Saleev V. A. 
Published: January 2020

Abstract
We study prompt production of J/ψ at the energy range of the NICA collider within the parton Reggeization approach (PRA) applying the non-perturbative QCD (NRQCD) factorization model for

c

c
¯

→
J
/
ψ

transition. We calculate transverse momentum distribution for direct J/ψ as well as for J/ψ from decays of higher-lying charmonium states. Production of polarized J/ψ is studied and parameter λθ
as a function of transverse momentum is calculated. The comparison with predictions obtained in calculations based on the next-to-leading approximation of the collinear parton model is done.
Bjorken sum rule with analytic QCD coupling
Authors: Ayala C , Cvetič G , Kotikov A V , Shaikhatdenov B G 
Published: January 2020

Abstract
We present details of study of the polarized Bjorken sum rule

Γ
1

p
−
n

(

Q
2

)

carried out recently in [1]. Four QCD coupling versions are considered: perturbative QCD (pQCD) in the

MS

¯

scheme, Analytic Perturbation Theory, and 2δ and 3δ analytic QCD

(

A
QCD

)

versions. In contrast to pQCD, these QCD variants do not have Landau singularities at low positive Q
2. In general, when 2δ and 3δ QCD coupling is used the fitted curves give the best results.
Hadron polarization in strong magnetic field
Authors: Luschevskaya E.V. , Teryaev O.V. , Ishkuvatov R.A. 
Published: January 2020

Abstract
The magnetic dipole polarizabilities and hyperpolarizabilities of the vector ρ
0 and ρ
± have been calculated. The new characteristic of the QCD vaccum in the strong magnetic field called tensor polarizability has been introduced, which is related to the tensor polarization. The contribution of the dipole magnetic polarizabilities to the tensor polarization of the vector mesons in the external abelian magnetic field has been explored.
Search for spiral structures in heavy ion physics and astrometry
Authors: Martynova Anastasia Y. , Teryaev Oleg V. 
Published: January 2020

Abstract
The appearance of helical structures in astrophysics and heavy-ion collisions (HIC) physics is discussed and the interplay between these two branches of physics is investigated. As far as in HIC the data are aviable in momentum space only, the assumption that the Milky Way has a spiral structure in the velocity space is checked. We find the spiral structures in phase and coordinate spaces from the rotation curve of our Galaxy include contribution of different parts of Galaxy, as thin disk, bulge and spherically symmetric Dark Matter Halo (Navarro-Frenk-White density profile). The helical structures in coordinate and velocity space are found and compared. An algorithm for searching helical structures has been developed and tested on logarithmic spiral with some random background.
Frequency domain method of the search for the electric dipole moment in a storage ring
Authors: Aksentev A E , Senichev Y V 
Published: January 2020

Abstract
A new method for searching for the electric dipole moment (EDM) of the deuteron and other nuclei is presented. When trying to measure the EDM in a storage ring environment, magnetic dipole moment (MDM) spin precession due to machine imperfections becomes the primary source of systematic error. The proposed method aims at providing a solution to the machine imperfection problemas well as circumventing the geometric phase error. The method is based on estimating the combined MDM + EDM spin precession frequency, in which the MDM contribution is due only to field imperfections. The MDM term is canceled in the final statistic by adding frequency estimates from cycles with counter-circulating beams. Spin precession rate depends on the particle’s effective Lorentz factor; the proposed method’s core feature is a procedure for equalizing the effective Lorentz factors of the clockwise and counter-clockwise circulating beams, thus enabling the cancelation.
Similarity and specifics of polarization in hadronic and heavy-ion collisions
Authors: Teryaev Oleg V , Zakharov Valentin I 
Published: January 2020

Abstract
The basic ingredients of baryon polarization emerging in the collisions of hadrons and heavy ions are compared. The apperance of the pseudovector as the normal to reaction plane, axial anomaly, as a spin-orbital interaction, and dissipation, as imaginary phase are discussed. The interplay beyween chenical potential and Regge behaviour and the hadronic analog of viscosity are outlined. The experimental studies of transition of hadrons to heavy ions, in particular at NICA (JINR) is discussed.
Vorticity structure and polarization of Λ hyperons in heavy-ion collisions
Authors: Zinchenko Aleksei , Sorin Alexander , Teryaev Oleg , Baznat Mircea 
Published: January 2020

Abstract
Simulations of peripheral Au+Au collisions at NICA energies are performed in the PHSD transport model. The properties of vorticity field are studied at different impact parameters. Quadrupole structures of the vorticity field in all planes are obtained. A thin layer of large vorticity is found at the boundary of the fireball, the so-called vortex sheet. The effect of helicity separation is detected. Calculation of hyperon polarization in thermodynamic and anomalous models is performed.
Direct reconstruction of the pp – elastic scattering amplitudes at U70
Authors: Bogdanov A A , Chetvertkova VA , Kozelov A V , Ladygin V P , Mochalov V , Nurusheva M B , Okorokov V A , Runtso M F , Vasiliev A N 
Published: January 2020

Abstract
The direct reconstruction of pp elastic scattering amplitudes at the SPASCHARM experiment is discussed. The observables are expressed in terms of invariant amplitudes. These amplitudes are deduced analytically by solving bilinear relations.
Monte-Carlo simulations of elastic scattering as well background reactions were carried out. Elastic and diffraction interactions of protons were simulated by using PYTHIA generator for 16 GeV incident protons, designed Setup geometry and the resolution of the detectors. The criteria to select elastic processes are discussed and presented. Two-dimensional distributions of the product of the tangents of the polar angles of the recoil particle and the scattered particle versus difference of the azimuth angles of these particles, were obtained. The estimated ratio of the signal to background S/(S+B) is about 0.99.
The results of the deuteron beam polarization measurement for dp-elastic scattering reaction at 270 MeV energy
Authors: Skhomenko Ya T , Ladygin V P , Gurchin Yu V , Isupov A Yu , Janek M , Karachuk J-T , Khrenov A N , Kurilkin P K , Livanov A N , Piyadin S M , Reznikov S G , Terekhin A A , Tishevsky A V , Averyanov A V , Belov A S , Chernykh E V , Enache D , Fimushkin V V , Krivenkov D O 
Published: January 2020

Abstract
The current deuteron beam polarimetry at Nuclotron is provided by the Internal Target polarimeter based on the use of the asymmetry in dp- elastic scattering at large angles in the cms at 270 MeV. The upgraded deuteron beam polarimeter has been used obtain the vector and tensor polarization during 2016/2017 runs for the DSS experimental program. The polarimeter has been used also for tuning of the polarized ion source parameters for 6 different spin modes.
Upgrade of the polarimeter at the Internal Target Station at the Nuclotron
Authors: Terekhin A. A. , Ladygin V. P. , Gurchin Yu.V. , Isupov A.Yu. , Khrenov A. N. , Kurilkin P. K. , Ladygina N. B. , Piyadin S. M. , Reznikov S. G. , Volkov I. S. , Janek M. , Livanov A. N. , Skhomenko Ya. T. , Tishevsky A. V. , Averyanov A. V. , Bazylev S. N. , Chernykh E. V. , Krivenkov D. O. , Slepnev I. V. , Slepnev V. M. , Shutov A. V. , Vnukov I. E. 
Published: January 2020

Abstract
The results of the Polarimeter upgrade at the Nuclotron internal target are presented. This Polarimeter is intended for experiments to study of the spin structure of two-nucleon and three- nucleon short-range correlations. The measurements are performed in the frame of the DSS project. The simulation of the pd-elastic and pp-elastic scattering for 500 - 1000 MeV proton energy to optimization of the experimental setup is performed.
About toroidal soliton-particle of extremal space-time film
Authors: Chernitskii Alexander A. 
Published: January 2020

Abstract
Nonlinear field model of extremal space-time film is considered. Its space-localized solution in toroidal coordinates with periodic dependence in time is investigated. A field configuration having a form of the twisted lightlike soliton moving along the ring is considered. An iterative algorithm for obtaining the solution in the form of formal power series in one toroidal variable is proposed. It is discovered that the time dependence in the toroidal solution has a deeply embedded character. Thus the full energy and angular momentum of the solution converge at space infinity.
Radiative corrections to QCD SR for meson distribution amplitudes up to

O(

α
s
2

β
0

)
Authors: Mikhailov S V , Volchanskiy N 
Published: January 2020

Abstract
We obtain QCD radiative corrections to distribution amplitudes of π and ρ mesons within QCD sum rules. To this end, we calculate correlators of two different composite vertices at order

O

(

α
s
2

β
0

)

, where β
0 is the first coefficient in the expansion of QCD ϒ-function.
Molecular dynamics simulation of structural transformations in Cu-Al system under pressure
Authors: Polyakova P V , Nazarov K S , Khisamov R Kh , Baimova J A 
Published: January 2020

Abstract
Aluminium-copper (Al–Cu) compounds are one of the most-studied precipitation-strengthened alloy systems. Mechanical properties of Cu-Al systems considerably dependent on the phase composition. Excellent properties primarily depend on the intrinsic microstructures formed during processing stages, particularly the precipitated phases or the so-called intermetallics, along with various defects and impurity segregation, have important influences on the composite strength. Study of fabrication techniques to obtain composites with improved mechanical properties, careful investigation of phase composition, dynamics and kinetics are of high importance. Molecular dynamics simulation is used to study on the atomistic level the process of formation of Al/Cu composite from two initially separated crystals by severe plastic deformation. The proposed model is the simplification of scenario, experimentally observed previously. However, even in such a simple model, understanding of the mechanisms underlying in the process of composite formation can be obtained.
Density functional study of the electronic properties of doped C20 fullerene
Authors: Salem M A 
Published: January 2020

Abstract
Density functional theory calculations have been performed for structures, stability and electronic properties of C20 fullerene doped by hydrogen, fluorine, and chloride atoms. Doping provides efficient tuning of frontier orbitals and electronic distribution in the pristine C20. Dipole moment, HOMO and LUMO energies as well as energy gaps were calculated and analysed. Hydrogen and chlorine dopants provide the minimal value of the energy gap. Based on presented results, on can chose appropriate radical to achieve the desired value of the band gap, needed for concrete solar cell systems or nanoelectronic devices.
Focus on changing fire regimes: interactions with climate, ecosystems, and society
Authors: Rogers Brendan M , Balch Jennifer K , Goetz Scott J , Lehmann Caroline E R , Turetsky Merritt 
Published: January 2020

Abstract
Fire is a complex Earth system phenomenon that fundamentally affects vegetation distributions, biogeochemical cycling, climate, and human society across most of Earth’s land surface. Fire regimes are currently changing due to multiple interacting global change drivers, most notably climate change, land use, and direct human influences via ignition and suppression. It is therefore critical to better understand the drivers, patterns, and impacts of these changing fire regimes now and continuing into the future. Our review contributes to this focus issue by synthesizing results from 27 studies covering a broad range of topics. Studies are categorized into (i) Understanding contemporary fire patterns, drivers, and effects; (ii) Human influences on fire regimes; (iii) Changes in historical fire regimes; (iv) Future projections; (v) Novel techniques; and (vi) Reviews. We conclude with a discussion on progress made, major remaining research challenges, and recommended directions.
Improved K-means Algorithm Based on Threshold Value Radius
Authors: Song Jiaqi , Li Fei , Li Ruxiang 
Published: January 2020

Abstract
K-means algorithm is a classical clustering algorithm, which needs to specify K value artificially and chooses the initial clustering center randomly. However, it is easy to fall into local optimal solution. In order to overcome the shortcomings of K-means algorithm, an improved algorithm based on threshold value radius is proposed in this paper. The initial clustering center and threshold radius are determined automatically by the average value of Euclidean distance between data. The experimental results show that the method proposed can effectively and accurately overcome the shortcomings of the traditional K-means algorithm.
Performance Analysis of Long-Time Coherent Integral Acquisition Algorithm for Weak GNSS Signals
Authors: Gao Faqin 
Published: January 2020

Abstract
Autonomous navigation places an extremely high demand on the acquisition sensitivity of the global navigation satellite system (GNSS) receivers. To increase the efficiency and sensitivity of the acquisition algorithm of GNSS weak signal, we improve the acquisition algorithm named Improved Acquisition Algorithm with Doppler Frequency Compensation (IAADFC) proposed in our previous study. The bottleneck restricting the performance improvement of the IAADFC algorithm is that it is difficult to estimate Doppler frequency and navigation message bit flip estimation in a very weak signal environment. We provide a detailed analysis and comparison among the proposed IAADFC algorithm, non coherent integration (NCI) algorithm. Simulation results demonstrate that our IAADFC acquisition algorithm can effectively realize the acquisition of GNSS signal with a singal-to noise ratio that down to 15 dB•Hz which is the current most advanced level of signal acquisition.
Practical Application Analysis of 3DMAX in Interior Design
Authors: Xing Song , Wang Mo 
Published: January 2020

Abstract
With the development of society and technology, new technologies in various fields are emerging one after another. 3DMAX is one of the world’s top 3D software products from Autodesk, plays an important role in all design fields. The application of 3DMAX in the field of interior design is conducive to accurately and intuitively transforming the designer’s creative ideas and design concepts, effectively improving the quality and efficiency of interior design projects. This paper is based on the relevant overview of 3DMAX software applications, analyzing and studying the practical application of 3DMAX in interior design.
Research on Data Privacy Protection of Internet of Vehicles Based on Differential Privacy
Authors: Luo Xue , Wang Juan , Xu Jing , Shen Mengting 
Published: January 2020

Abstract
The private data of intelligent vehicles connected to the Internet are easy to leak through the network. However, all existing solutions require the intervention of trusted third parties. In reality, even the confidentiality commitment provided by vehicle service providers is questioned by users. Aiming at this problem, a local differential privacy algorithm is introduced to design a data privacy protection scheme adapted to the characteristics of Internet of vehicles. The original data are only stored locally, and all the statistical data provided to the collector are disturbed. On the basis of ensuring the necessary data collection of the service center, it is guaranteed by mathematical principle that the collector cannot reverse the original data and the original data provider. The experimental results show that when the number of users is 10 million, the maximum relative error of frequency estimation is 0.0031 and the maximum relative error of mean estimation is 0.00006, which are far less than the tolerance value of 0.01, indicating that the scheme guarantees the application of Internet of vehicle safety situational awareness and other applications that need a lot of data support on the basis of protecting user privacy.
Discussion on Urban Black Odor Water Body Treatment and Long-term Management and Maintenance
Authors: Yu Lintang , Tang Zhongya , Ji Junjie , Song Yujun 
Published: January 2020

Abstract
In view of the increasingly serious pollution of urban rivers, seasonal or end-age black odor, not only affects the urban landscape, but also affects the daily life of the surrounding residents, in order to eliminate urban black and smelly rivers and improve the quality of urban water environment. This paper proposes the treatment technology of urban black and odorous water from the aspects of controlling source pollution, water pollution control and ecological restoration technology. Strengthen management from the long-term improvement system of water quality and policy guarantees to achieve the long-term clear effect of urban water bodies.
Optimization for Fatigue Pressure Testing of Metal Pressure-Containing Envelopes Based on Scenario Analysis
Authors: Wang Changjin , Qian Xinbo 
Published: January 2020

Abstract
For reliability analysis of hydraulic system, it is important to achieve the fatigue characteristic (SN curve) for hydraulic component. However, it needs to improve the testing pressure level number and test samples to improve the testing accuracy. However, there is little research about to optimize the energy consumption while efficiently ensuring the testing accuracy. Moreover, uncertainty does exit for the testing accuracy estimation because of small sample size for hydraulic system. Therefore, a scenario analysis-based framework is proposed to optimize both the energy consumption and test accuracy by stochastic multi-objective programming. The case study shows the efficiency of the proposed method.
ECG Heartbeat Classification Based on ResNet and Bi-LSTM
Authors: Zhou Yang , Zhang Haoxi , Li Yuan , Ning Guangjian 
Published: January 2020

Abstract
As a reliable cardiovascular system, ECG has been widely used in the detection of heart rhythms. This paper presents an attention-based ResNet processing of ECG data. Respectively are MIT and PTB Diagnostics datasets. The model is prominent in both data sets. And the accuracy in MIT datasets is 96.2%. And in PTB datasets the accuracy is 99.6%.
A Summary of Research on Passenger Flow Simulation Technology in Rail Transit Station
Authors: Xue Hongjiao , Chen Junjie , Zhang Hong 
Published: January 2020

Abstract
From macroscopic and microscopic aspects, the research status on passenger flow simulation technologies are summarized. The macro-model mainly contains the system dynamics model and the hydrodynamic model. And the macro-model mainly introduces the magnetic model, the queuing theory model, the cellular automaton model and the social force model. Through comparative analysing the simulation models mentioned, this paper proposes the model suitable for the station simulation in peak hours.
Design and Implementation of Self-Expanding System of Unmanned Vehicles Group Based on Signal Strength
Authors: Chen Yajie , Qin Zhen , Zhang Lei , Li Aijing , Wang Hai 
Published: January 2020

Abstract
Unmanned vehicles are widely used in the military field. They are equipped with a wide variety of sensors so that they can flexibly complete tasks such as enemy surveillance. At present, unmanned vehicles generally control the movement by an obstacle avoidance system or an ultrasonic ranging system without considering the signal strength, which may cause poor communication. In this paper, we present a model based on signal strength for unmanned vehicles self-expansion to solve the problem. In the experiment, we consider and measure the relationship between signal strength, network bandwidth and packet loss rate, and select the optimal signal strength threshold. By applying this model, the vehicles group can realize the self-expansion and multi-hop communication of the vehicles in the network, which make the vehicles reach the maximum coverage areas and the optimal communication quality.
Lump Soliton Model on Chinese Microblog Public Opinion
Authors: Wu Weiwei , Chen Yan , Wang Decheng 
Published: January 2020

Abstract
There has been a tremendous rise in the growth of Chinese Microblog--- Sina Weibo in the past few years. Sina Weibo contains many interesting hot issues. In particular, the trend of some hot topics can be described by the soliton wave model based on some hypothesis and parameter settings. The theoretical strategies to control the trend of hot topics are stated by employing the lump soliton solution theory of the KdV equation and KP equation.
Fault Detection Platform for Wireless Sensor Networks
Authors: Zi Shuangfei , Lin Weilan , Xiao Jinchao , Lin Zifan , Fan Zhiyi 
Published: January 2020

Abstract
To point at the errors in development of wireless sensors network engineering as well as deal with the difficult issues of fast positioning and debugging, the Non-Intrusive fault detection platform is designed and consists of three parts, which includes the tested sensor networks, testing networks and testing tools. Besides, the mentioned parts can play a role in the development of network protocol, realizing the function of time synchronization testing, messages analysis, power consumption testing, reliability testing and delay test, etc. Through the detection platform can the long chain network be tested in the development process. The experimental results verify the fact that the validity of the detection platform performs in functions of time synchronization testing, reliability testing, power consumption testing and message analysis, even handling the problems of rapid locating and debugging.