bluuebunny/crossref_metadata_2025_split huggingface dataset:
Probing the linearly polarized gluons in unpolarized proton with heavy-quark pair production
Authors: Ivanov N. Ya. , Efremov A.V. , Teryaev O. V. 
Published: January 2020

Abstract
We consider the azimuthal cos φ and cos 2φ distributions and the Callan-Gross ratio R = dσL
/dσT
in heavy-quark pair electroproduction,

l
N
→

l
′

Q

Q
¯

X

, as probes of linearly polarized gluons in unpolarized nucleons. Our analysis shows that the azimuthal asymmetries and Callan-Gross ratio are predicted to be large and very sensitive to the contribution of the gluonic counterpart of the Boer-Mulders function,

h
1

⊥
g

, describing the linear polarization of gluons inside unpolarized nucleon. In particular, the maximum values of the azimuthal distributions vary from 0 to 1 depending on

h
1

⊥
g

. We conclude that future measurements of these quantities at the proposed EIC and LHeC colliders could clarify in details the proton spin decomposition puzzle.
Parity violation and modification of fermion spin projectors
Authors: Kaloshin A E , Lomov V P 
Published: January 2020

Abstract
Account of interactions in frameworks of Standard Model leads to appearence of γ5 terms in a dressed fermion propagator. In this case the standard spin projectors do not commute with propagator and should be modified. Starting point of our discussion is the eigenvalue problem for inverse propagator S(p). Having the solutions of this problem, one can understand the necessary modification of spin projectors. The same generalized spin projector appears at propagation of neutrino in a moving matter, but in contrast to vacuum case, corresponding polarization vector is not arbitrary. This spin projector commute with neutrino propagator and all dispersion laws for neutrino in media are classified according to spin projection onto this fixed axis.
Radiative decays of heavy quarkonia into two vector mesons. Spin properties of amplitudes and angular distributions of linearly polarized photons
Authors: Kozhevnikov A A 
Published: January 2020

Abstract
Angular distributions of photons with definite linear polarizations relative to the plane spanned by the momentum of initial electron and the total momentum of the V
1
V
1 pair in the reaction e
+
e
− → V → γ X (JP
) → γV
1
V
1 (V = J/ψ,ψ′,…, Υ(1S), Υ,… and V
1 = ρ,ω,ϕ,…) are calculated. It is shown that the sign of asymmetry of the distributions of photons polarized in the above plane and orthogonal to it correlates with the signature P(−1)
J
of the X resonance with given spin-parity JP
= 0±, 1±, 2± so it may help to establish this quantum number in a way which does not depend on the specific model of the X(JP
) → V
1
V
1 amplitude.
On the spin correlations of final leptons produced in the high-energy annihilation and two-photon processes e+e− → μ+ μ−, τ+τ− and γγ → e+e−, μ+μ−, τ+τ−
Authors: Lyuboshitz Valery V , Lyuboshitz Vladimir L 
Published: January 2020

Abstract
The electromagnetic processes of annihilation of (e
+
e
−) pairs, into heavy flavor lepton pairs are theoretically studied in the one-photon approximation, using the technique of helicity amplitudes . For the process e
+
e
− − μ
+
μ
−, it is shown that - in the case of the unpolarized electron and positron − the final muons are also unpolarized but their spins are strongly correlated; the structure of their triplet states is analyzed and explicit expressions for the correlation tensor components are derived. On the other hand, the theoretical study of spin structure for the processes of lepton pair production by photon pairs is also performed: for the two-photon process γγ → e
+
e
−, it is found that – quite similarly - in the case of unpolarized photons the spins of final unpolarized particles prove to be strongly correlated, and explicit expressions for the correlation tensor components and relative fractions of singlet and triplet states of the final system are obtained. It is established that in both these processes the spin correlations of final leptons have the purely quantum character, since one of the Bell-type incoherence inequalities for the correlation tensor components is always violated. Analogous analysis can be wholly applied also to the annihilation process e
+
e
− → τ
+
τ
− and to the two-photon processes γγ → μ
+
μ
−, γγ → τ
+
τ
−, becoming possible at considerably higher energies.
NLO radiative corrections to the Drell–Yan process at LHC Run3
Authors: Buhayeuskaya M. P. , Zykunov V. A. 
Published: January 2020

Abstract
NLO electroweak and QCD radiative corrections to the Drell-Yan process were calculated. The numerical estimations for forward-backward asymmetry in μ
+
μ
− pair production performed in various rapidity ranges and different PDF sets for center-of-mass energy

S

=
7

TeV are in agreement with CERN Large Hadron Collider (LHC) Runl experimental data. To simulate the detector acceptance we used the standard CMS detector cuts. We present predictions for radiatively corrected differential cross section and forward-backward asymmetry at CMS LHC Run3 with energy

S

=
14

TeV.
Kinematics of proton and deuteron beam polarization in the transparent spin mode of the NICA collider
Authors: Kondratenko A M , Kondratenko M A , Kovalenko A D , Butenko A V , Shimanskiy S S , Syresin E M , Vinogradov S V , Filatov Yu N 
Published: January 2020

Abstract
For experiments with polarized protons and deuterons, the NICA collider is planned to be used in the transparent spin mode, which is provided by two solenoid snakes. The required direction of polarization in the SPD detector is set by “spin navigators”, which are insertions that rotate the spins at small angles. The polarization outside the SPD detector is determined by arc dipoles and the placement of snake solenoids in the collider. The kinematics of beam polarization is calculated when vertical, longitudinal or radial polarization is set in the SPD detector for different schemes of placement of snake solenoids. The results are relevant to solve the problems of injection and polarimetry for conducting experiments with polarized beams in the spin transparency mode.
Λ hyperon reconstruction at the BM@N experiment and prospects for polarization studies
Authors: Kapishin M , Pokatashkin G , Rufanov I , Suvarieva D , Vasendina V , Zinchenko A 
Published: January 2020

Abstract
The BM@N detector at Nuclotron has collected data with different beams (C, Ar, Kr) on different targets. Results of the data analysis on Λ hyperon production in interactions of the 4 GeV kinetic energy carbon beam with C, Al, Cu targets are presented. Plans for future running of the experiment and physics analyses are described including expectations for the Λ hyperon polarization studies on the basis of the Monte Carlo simulated event sample.
Kerr-Newman black hole as spinning particle
Authors: Burinskii Alexander 
Published: January 2020

Abstract
The Kerr-Newman Black Hole (BH) solution has many remarkable properties, which allow us to identify it with a model of the consistent with gravity electron. We consider regularized version of this solution, and show that it gives new important effect – the gravitationally induced Wilson line, which may play very important role in the physics of spin.
Zitterbewegung in quantum mechanics of Proca particles
Authors: Silenko Alexander J. 
Published: January 2020

Abstract
Zitterbewegung of a massive Proca (spin-1) boson is analyzed. The equations of motion of a massive Proca particle in the Sakata-Taketani representation are equivalent to the corresponding equations for the Dirac particle. However, Zitterbewegung does not appear in the Foldy-Wouthuysen representation. Zitterbewegung is not observable because the quantum-mechanical counterparts of the classical position and velocity are the position and velocity operators in the Foldy-Wouthuysen representation and their transforms to other representations.
The effect of spatial disorder on the temperature dependence of charge carrier mobility in disordered organics
Authors: Burdakov Ya V , Nikitenko V R 
Published: January 2020

Abstract
The effective transport level is defined from the Monte-Carlo modelling in energetically and spatially disordered system, and the temperature dependence of the low-concentration and low-field mobility is calculated. The spatial disorder leads to the slight decreasing of the coefficient C in the temperature dependence, the same as decreasing of localization.
Kinetic test of a doped silicene-graphite anode element in a computer experiment
Authors: Galashev A Ye , Rakhmanova O R , Zaikov Yu P 
Published: January 2020

Abstract
The stability of the system “bi-layer silicene on the graphite substrate” is studied in the molecular dynamics simulation. Silicene sheets are doped with phosphorus, and graphite sheets are doped with nitrogen. Lithium ion moves along a silicene channel with a gap in the range of 0.6–0.8 nm. The time for the ion to pass the channel and leave it decreases with an increase in the channel gap. There is a tendency of the silicene sheets roughness growth with an increase in the gap between silicene sheets (except, 0.75 nm). Doping phosphorus and nitrogen atoms stabilize the silicene and graphite structure.
Effect of particle size on the formation of the composite structure in Ni-graphene system: atomistic simulation
Authors: Safina L R , Krylova K A 
Published: January 2020

Abstract
Fabrication of Ni-graphene composite with the nanoparticles of different sizes by hydrostatic pressure at 1500 K is studied by molecular dynamics simulation. The high specific surface area of crumpled graphene allow to fill its pores by metal nanoparticles and obtain composite structure at given conditions. It is observed, that temperature exceeding melting temperature of Ni nanoparticles but considerably lower than the melting temperature of graphene lead to better mixing of the structural elements. It is found, that one of the main factors in the composite fabrication is nanoparticle size. Bigger nanoparticles fully covered by graphene flakes even at high temperatures preserve its spherical shape and retard the obtaining of the composite structure. Nanoparticles of small and average size demonstrate the much better formation of the composite.
Formation of nitrogen-vacancy centres in diamond: tight-binding molecular dynamic simulation
Authors: Smirnova M O 
Published: January 2020

Abstract
Molecular dynamics simulation of the vacancy diffusion in diamond and its interaction and merging with substituted nitrogen atom at different temperatures is presented. The activation energy was calculated from temperature dependence of the diffusion and merging rates. Presented data provides optimal temperature and duration of annealing for efficient formation of NV-centres with desired spatial localization. Simulation results are also useful for creating of solid structures for realization of quantum memory registers.
Observed earlier start of the growing season from middle to high latitudes across the Northern Hemisphere snow-covered landmass for the period 2001–2014
Authors: Chen Xiaona , Yang Yaping 
Published: January 2020

Abstract
Vegetation phenology in spring has received much attention for its importance to terrestrial ecosystem carbon exchange and climate–biosphere interactions studies. Through control on surface water and heat balance, snow cover largely impacts on spring vegetation phenology. However, under the background of global warming and rapid reduction of spring snow cover extent across the Northern Hemisphere (NH), the responses of spring vegetation phenology have not been well documented. Using two satellite-derived land cover dynamic datasets and 420 in situ vegetation phenology observations from five filed datasets, this study evaluated the accuracy of satellite-derived vegetation phenology datasets and explored the changes of start of the growing season (SOS) across the NH snow-covered landmass for the period 2001–2014. Compared with MEaSUREs VIPPHEN, the MODIS SOS maps displayed higher accuracy in capture the real SOS climatology by validating with in situ observations (R
2 = 0.67, bias = −3.99 d). Moreover, evidences from MODIS SOS maps pointed out that the SOS advanced by approximately 2.36 d in NH middle to high latitudes (43.5°N–70.0°N), but delayed by about 0.53 d in lower latitudes (33.0°N–43.5°N) from 2001 to 2014. The contrast SOS anomalies across the NH snow-covered landmass were further proved by changes in spring NDVI derived from GIMMS in the corresponding period. In addition, the observed changes in SOS were consistent with the spatiotemporal pattern of spring snow end date found in previous studies, indicating vegetation phenology changes should be taken into account in estimating the impacts of snow in climate–biosphere interactions studies.
Research on Transformation & Upgrade Path of the Zhejiang Hai-Gang Intelligent Home City under New Trend of Industry Development
Authors: Shen Yuyan , Qian Yan 
Published: January 2020

Abstract
The Zhejiang Hai-Gang Intelligent Home City is an influential home market in Haiyan County; the transforming and upgrading development idea is the result of active adapting to the structural reform of the supply side of the country, which can maximize the transformation and upgrading of the regional wholesale and retail industry, with the obvious demonstration significance. Based on the existing development speed and bottlenecks in the development process of The Zhejiang Hai-Gang Intelligent Home City, Home City and Market Management Co., Ltd still need to solve the following problems to adapt to the transformation and upgrading of the home market and expand the influence of home industry in north Zhejiang Province and Yangtze River Delta.
Waste Smoke Recovery Based on Time Window Path Optimization of Multi-AGV System
Authors: Sun Shunkai , Li Jie , Xu Qi , Shu Meng , Shen Xue , Jin Jin , Cui Haobo , Liu Jingjie , Li Guorui 
Published: January 2020

Abstract
In this paper, a floor fork laser guided transport vehicle is used to recover waste smoke. The advantages are obvious, small and flexible, safe and reliable, and it is widely used in working places with narrow space and high level difference. In the multi-AGV system, each AGV coordinated with each other to complete the waste smoke recovery. When multiple AGVs are running at the same time, it is necessary to consider path planning issues to avoid conflicting paths. On the one hand, the operation efficiency is affected, and on the other hand, the AGV system is paralyzed. Multiple AVGs run in the system at the same time and perform multiple handling tasks at the same time. Coordination is required to avoid or preempt the area first, avoid path conflicts, and collaborate to achieve efficient distribution.
Infrared and Visible Image Fusion Algorithm Based on Target Extraction
Authors: Wang Yumei , Zhang Mingyi , Li Congyong , Wang Tao , Huang Keming , Li Meng 
Published: January 2020

Abstract
With the purpose to highlight infrared targets and improve the fusion quality of infrared and visible images, an infrared and visible image fusion algorithm based on target extraction is proposed. Firstly, impose Canny edge extraction and Otsu threshold segmentation on the infrared images, fuse the binary images extracted from them and obtain the infrared target images. Secondly, lift wavelet transform on V components of the infrared target images, infrared images and the visible images after HSV color space transform, adopt the fusion rules based on regional energy, mutual information and matching degree for high-frequency coefficients and the fusion rules based on regions for low-frequency coefficients under the guidance of low-frequency coefficients of infrared target images for the fusion of low-frequency coefficients. The contrast experiment of image fusion algorithm shows that the fusion algorithm in this paper can better highlight infrared target information, provide rich background details, and is superior to the traditional algorithm in image clarity and human visual effect.
Inversion of Soil Water Content in Jiyang District Based on High Resolution Remote Sensing Image
Authors: Tang Wenwen , Dong Fang 
Published: January 2020

Abstract
The monitoring of soil water content plays an important role in agricultural production. This paper uses high resolution remote sensing image (GF-2 image) and measured soil water content data combined with dual-band, multi-band and PDI index inversion models to invert the soil water content of Xiyan and Wangxingjia Village of Jiyang District, Jinan City, and the effects of soil water content inversion were compared and verified. The results show that the decision coefficients of the multi-band inversion model reach 0.690, respectively, with the highest accuracy. More than 90% of the area in this study area has a soil water content greater than 0.15, which is dominated by suitable and wet soils, mainly distributed in the central part of the study area and near water bodies such as paddy fields, pit ponds and ditches; heavy drought, moderate drought, Light and dry soils account for a very small number, mainly distributed in the southwest direction of the study area, that is, the west side of Wangxingjia Village, distributed in a strip shape. It can be seen that GF-2 images can carry out the inversion of large-scale soil water content and provide a basis for scientific decision-making of agricultural production.
Research on Data Preprocessing in Side Channel Attack Based on Multi-Layer Perception
Authors: Yu Tiankai , Wang Min , Wang Yi , Wu Zhen , Wei Xi 
Published: January 2020

Abstract
The data encryption process in the encryption chip will be leaked by means of timing operation time, probe collection operation power and electromagnetic signal interception, which makes side channel attack possible. The actual power consumption data usually contains a lot of noise, which reduces the success rate of side channel attack. This paper studies the preprocessing of FPGA power data, proposes two indexes -- MSNR (Maximum Signal Noise Ratio) and GE (Guessing Entropy), and the variance and mean curves of Hamming weight assist modelling to summarize three reliable preprocessing methods based on dynamic powers.
High Power-over-Fiber Feed for Radio-over-Fiber Systems with Remote Antenna Units
Authors: Yang Liwei , Yang Huiping , Zhang Qi , Huang Zhengqiu , Zhang Wenjie 
Published: January 2020

Abstract
We experimentally demonstrated a radio-over-fiber transmission integrated with a power-over-fiber system for next generation access networks, which can drive remote antenna units and improve bandwidth utilization effectively. We have achieved high transmission performance and expanded the signal transmission capacity.
An Improved Blockchain Consensus Mechanism Based on Open Business Environment
Authors: Wu Wenmiao , Gao Zhipeng 
Published: January 2020

Abstract
With the rise of the blockchain, the underlying technology has also received more and more attention. The blockchain is a point-to-point distributed system, and the consensus algorithm is a mechanism to resolve the consensus of each node. Byzantine Fault Tolerance (BFT) is a fault-tolerant technology in the field of distributed computing. The blockchain network environment conforms to the Byzantine general problem model. In order to make it suitable for open business environment, we propose an improved blockchain consensus mechanism based on Practical Byzantine Fault Tolerance Algorithm (PBFT) that consider different business. The consensus algorithm proposed in this paper (OBE-PBFT) introduces the historical behavior credit rating of nodes to optimize the view change protocol in PBFT, so as to solve the problem of low consensus success rate and large traffic when encountering Byzantine nodes. The historical credit rating of the node can make the consensus process more robust, in order to solve the problem of different business in the alliance chain consensus mechanism in the open business environment.
Multi-Channel and Simultaneous Data Acquisition System for Magnetic Tensor Detection
Authors: You Hao , Liu Huiping , Qi Fujun , Li Baogang , Sun Lijuan , Li Yusong 
Published: January 2020

Abstract
This paper reports the design of a multi-channel and simultaneous data acquisition system(MSDAS). It can collect 12-channel magnetic induction component signals with magnetic tensor information rapidly and simultaneously. The STM32F103RCT6 and a 16-bit AD7606 are used as the MSDAQ’s microcontroller and the analog-to-digital(A/D) converter, respectively. Moreover, FATFS file system and TCP/IP protocol are integrated such that the MSDAS is capable of local storage and network simultaneous data transmission in real time. Experiments show that MSDAS can achieve data acquisition error ≤0.5% with the simultaneous sampling rate up to 500Hz. It is verified that the measurement results of magnetic tensor are basically consistent with the theory.
Study on Knowledge Representation Framework and Anomaly Detection of the Intelligent Vehicle
Authors: Wang Juan , Zhang Haoxi , Wang Zuli , Zhao Jun , Shi Lei 
Published: January 2020

Abstract
Intelligent vehicle is a complex system includes at least three parts of information, the vehicles themselves, driving surroundings and drivers which has different formats, different properties, and different collection methods. These differences bring difficulties to communication and knowledge sharing among vehicles and drivers, and also create barriers to vehicle safety research. To address these problems, we propose a novel intelligent vehicle knowledge framework to contain all of related information of intelligent vehicle with clear hierarchical architecture and unified SOEKS structure. Based on the framework the anomaly detection approach using past driving experience and the neural knowledge DNA (NK-DNA) is proposed. And then we introduce the Long Short-Term Memory (LSTM) neural network into the Networks of NK-DNA, to detect abnormal CAN packages. We examine our approach with real car data and simulated attack data. The simulation results shown our framework and detection method can share easily and found anomalies of CAN bus flow.
Comparision of Eight Topographic Correction Algorithms Applied to Landsat-8 OLI Imagery Based on the DEM
Authors: Fang Yan , Zhao Jinling , Liu Lingling , Wang Jie 
Published: January 2020

Abstract
Topographic correction is one of the most important procedures for remote sensing image preprocessing, and it is also the premise for quantitative remote sensing. According to the latest calibration parameters provided by the USGS website, four Lambert body reflectance models and four Non-Lambert body reflectance models were used to carry out the topographic correction combining the DEM data in R platform. A total of three indicators were used to assess the effects including visual contrast, normalized evaluation of shady slopes and sunny slopes, and linear fitting. The results show that the corrected image of Cosine correction method based on the Lambertian reflectivity model is visually overexposed, and the DN value on the shady slope is over-corrected. The corrected images of Minnaert and Minaret-scs based on the Non-Lambertian reflectivity model visually reduce the amplitude of the terrain fluctuations, and the linear fitting has a small separation factor, which produces a better correction effect.