bluuebunny/crossref_metadata_2025_split huggingface dataset:
Accelerating simulations of electromagnetic waves in hot, magnetized fusion plasmas
Authors: Budé R H S , Van Eester D , van Dijk J , Jaspers R J E , Smolders A B 
Published: December 2020

Abstract
Accurate simulations of the behavior of RF waves in hot, magnetized fusion plasmas have traditionally been computationally demanding due to the integro-differential character of the hot plasma wave equation. In this work a method is described that allows the integral in the hot-plasma wave equation to be rewritten as a set of differential operators by fitting a polynomial through the dielectric tensor components. This approach is applied to a one-dimensional simulation with typical profiles and plasma parameters for the JET fusion reactor. The accuracy and computational time are compared with an all-orders model and a truncated Finite Larmor Radius model. It is shown that the proposed method can be used to achieve accuracies previously only obtained with extremely heavy all-orders models like the two-dimensional AORSA code, but at significantly reduced computational costs. The MATLAB code that has been developed in this work is available under the GPLv3 licence.
Efficient two-dimensional atom localization in a five-level conductive chiral atomic medium via birefringence beam absorption spectrum
Authors: Ali Sajid , Idrees Muhammad , Bacha Bakth Amin , Ullah Arif , Haneef Muhammad 
Published: December 2020

Abstract
We have theoretically investigated two-dimensional atom localization using the absorption spectra of birefringence beams of light in a single wavelength domain. The atom localization is controlled and modified through tunneling effect in a conductive chiral atomic medium with absorption spectra of birefringent beams. The significant localization peaks are investigated in the left and right circularly polarized beam. Single and double localized peaks are observed in different quadrants with minimum uncertainty and significant probability. The localized probability is modified by controlling birefringence and tunneling conditions. These results may be useful for the capability of optical microscopy and atom imaging.
Mathematical simulation of heat transfer for atmospheric air cooling of heat exchange tube
Authors: Balchugov A V , Kustov B O , Badenikov A V , Vazhenin M N 
Published: December 2020

Abstract
The laboratory facility with horizontal, atmospheric air cooled heat exchange tube has been engineered, manufactured and put to trial. The test has proven the reliability of the employed analysis methods and hardware. Mathematical simulation of horizontal tube heat transfer process has been fulfilled with the use of ideal displacement and mixing, cellular and longitudinal diffusion models. The in-tube hot water temperature pattern has been evaluated according to the aforementioned models. The results comparison has been fulfilled for experimental determination of in-tube water temperature differential and calculation data in accordance with given models. The longitudinal diffusion model has proven itself as the most suitable for describing the heat transfer process in a horizontal, atmospheric air cooled tube. The longitudinal diffusion coefficient value has been deducted from experiments. The research data can be utilized during the development of tubular heat exchangers.
FPGA-based convolutional layer implementation
Authors: Berzin A K , Dergunov E S 
Published: December 2020

Abstract
In this paper, several approaches to the implementation of a convolutional layer of a neural network on FPGAs for use in embedded systems are considered, as well as a number of optimizations necessary to speed up the operation of such a layer. At the end of the work, an FPGA-based implementation is proposed that is comparable in performance with the reference CPU-based one.
Review of radio image recovery methods
Authors: Khmelev V L , Fominykh A F 
Published: December 2020

Abstract
Radio-wave image restoration techniques are now intensively being researched at the Radiophysics Faculty of Tomsk State University. Key methods of radio-wave image reconstruction are examined in this paper. We describe the mathematical basis of adapted methods in the single scattering approximation. These methods are used at the Department of Radiophysics in the developed safety systems. The technique of differential hyperboles and Stolt’s method, for instance, were adopted from acoustic seismology. Mainly, geotomographic systems use these methods for imaging objects under the surface. Safety systems have close task, they are to detect prohibited items under the passengers’ clothing and in the luggage at railway stations or airports. Radio-wave tomography methods can reconstruct images of prohibited objects in the same way as X-rays safety system, but without X-ray radiation, so without harm for a human biology tissue.
Convergence rate of mean-square error of kernel estimators of non-homogeneous Poisson process intensity function
Authors: Kitaeva A V , Kolupaev M V , Stepanova N V , Zhukovskiy O I 
Published: December 2020

Abstract
The estimator has been constructed similar to the Parzen-Rosenblatt window method using a single realization of a Poisson process at a fixed time interval. The intensity function of a non-homogeneous Poisson process is estimated up to a multiplicative constant. The convergence rate of the mean square error was found in the series of schemes with an unlimited increase of the intensity.
Digitalization of the electric consumption system of oil and gas production enterprises
Authors: Konovalov Yu V 
Published: December 2020

Abstract
The provisions of the digital transformation of power consumption management systems for oil and gas companies are considered. The characteristics of the random process are obtained by the type of the probabilistic distribution of the electrical loads graphs coordinates. New analytic dependencies allow to determine the updated probabilistic characteristics and build a digital model of the random process for changing the enterprise power consumption.
Improved signal processing observed with semi-Markov noises
Authors: Pchelintsev E A , Perelevskiy S S , Povzun M A 
Published: December 2020

AbstractThis paper considers the problem of improved adaptive estimating a periodic signal observed in the transmission channel with the dependent noise defined by semi-Markov processes with unknown probabilities and spectral characteristics. Improved adaptive model selection procedure is proposed. The comparison between improved and least squares methods is studied. Sharp oracle inequality for the procedure risk is obtained. The efficiency of the proposed procedure is established. The Monte Carlo simulation results are given.
Electron-hole transport in semiconductors: stochastic dynamics simulation
Authors: Sabelfeld Karl K. , Kireeva Anastasiya 
Published: December 2020

Abstract
A random walk based stochastic simulation algorithm for solving a nonlinear system of transient drift-diffusion-Poisson equations for semiconductors with random doping profile is developed. The method is then applied to simulate and analyze the stochastic dynamics of the transport of electrons and holes in doped semiconductor material. This analysis has a theoretical but also a practical interest since an addition even of a small concentration of foreign atoms to the regular semiconductor material produces dramatic changes in the electrical properties. The nonlinear drift-diffusion-Poisson system is solved by the iteration procedure including alternating simulation of the drift-diffusion processes and solving the Poisson equation. Here, we extend the iteration algorithm to solve the drift-diffusion-Poisson system with additional term governing the random inputs in the system like the stochastic doping, random distribution of quantum dots, and an irregular family of defects. Impact of these random entries on the stochastic dynamics of the drift velocity and electron and hole concentrations is studied.
Modification of notes recognition algorithm with a sharp change of the pitch frequency
Authors: Yu Yakimuk A , Kataeva E S , Golovchiner M N 
Published: December 2020

Abstract
The paper presents the results of signal processing using the simplest methods of time series analysis to localize the main note in the presence of vibrato or ascending / descending glissando. The idea of using smoothing to find the vibrato effect is to evaluate segments of the speech signal, within which it was not possible to identify the note. Data on frequencies in this segment are averaged to localize the main note, relative to which the deviation in sound and the frequency of changes are determined in percentage terms. If the deviation from the main note is more than half a tone, the frequencies are perceived as noise.
Operation and Performance of the ATLAS Tile Calorimeter
Authors: Pedro Rute 
Published: December 2020

Abstract
The Tile Calorimeter (TileCal), the central hadronic calorimeter of the ATLAS detector, is a key system to measure jets and the missing transverse energy. It uses plastic scintillators interleaved by steel plates, with optical fibre readout and photomultipliers to detect the scintillating light produced by the passage of particles. The TileCal energy scale was obtained in tests with beam tests and, during operation, dedicated calibration systems monitor each step of the readout chain to address response fluctuations. The detector performance in Run 2 was studied with isolated particles and data quality was assessed with the large sample of proton-proton collisions. In this proceeding, the methods and results of the TileCal calibration, operation and performance in Run 2 are presented.
LVD status report: underground muon physics
Authors: Agafonova N 
Published: December 2020

Abstract
The scintillation LVD detector is used to study cosmic ray muons with mean energy of 280 GeV at an average depth of 3.6 km w.e. The experiment has been going on since 1992 at the Gran Sasso underground laboratory, Italy. During 28 years of work, the characteristics of the muon flux, its dependence on depth and seasonal variations and, the charge muon ratio, the multiplicity curve of muon groups and the decoherent curve have been obtained.
Performance for proton anisotropic flow measurement of the CBM experiment at FAIR
Authors: Golosov O , Klochkov V , Kashirin E , Selyuzhenkov I 
Published: December 2020

Abstract
The Compressed Baryonic Matter experiment (CBM) performance for proton anisotropic flow measurements is studied with Monte-Carlo simulations using collisions of gold ions at lab momentum of 12A GeV/c employing DCM-QGSM-SMM heavy-ion event generator. Realistic procedures are used for centrality estimation with the number of registered tracks and particle identification with information from Time-Of-Flight detector. Variation of directed flow estimates depending on various combinations of PSD modules is used to evaluate possible systematic biases due to collision symmetry plane estimation.
Topological studies of light-flavor hadron production in pp, p–Pb, and Pb–Pb collisions with ALICE at the LHC
Authors: Tripathy Sushanta 
Published: December 2020

Abstract
Recent results for high multiplicity pp and p-Pb collisions have revealed that they exhibit heavy-ion-like behaviors. To understand the origin(s) of these unexpected phenomena, event shape observables such as transverse spherocity

(

S
0

p
T

=
1

)

and the relative transverse activity classifier (R
T) can be exploited as a powerful tools to disentangle soft (non-perturbative) and hard (perturbative) particle production. The production of light-flavor hadrons is shown for various

S
0

p
T

=
1

classes in pp collisions at

s

=
13

TeV

measured with the ALICE detector at the LHC. The evolution of average transverse momentum

(

〈

p
T

〉

)

with charged-particle multiplicity, and identified particle ratios as a function of pT
for different

S
0

p
T

=
1

are also presented. In addition, the system size dependence of charged-particle production in pp, p–Pb, and Pb–Pb collisions at

s

N
N

=
5.02

TeV

is presented. The evolution of 〈pT
〉 in different topological regions as a function of RT
are presented. Finally, using the same approach, we present a search for jet quenching behavior in small collision systems.
Studies of excited states of beauty hadrons at CMS
Authors: Ivanov Kirill 
Published: December 2020

Abstract
Studies of excited states of beauty mesons and baryons, performed at the CMS Experiment, are presented. The first observation of

B
c
+

(
2
S
)

and

B
c

*
+

(
2
S
)

states in the

B
c
+

π
+

π
−

invariant mass spectrum is reported as well as the study of excited Λb(5912)0, Λb(5920)0, Λb(6146)0 and Λb(6152)0 baryons decaying to

Λ
b
0

π
+

π
−

. The analyses use Run-2 data, collected in pp collisions at

s

=
13

TeV

.
Physics prospects for ATLAS at the HL-LHC
Authors: Nielsen J 
Published: December 2020

Abstract
The ATLAS experiment at CERN will undergo a series of detector upgrades over the next few years to prepare for the the High-Luminosity Large Hadron Collider (HL-LHC) project. The upgrades are designed to maintain or improve detector performance, even with the instantaneous luminosity needed to deliver a total of 3000 fb−1 of proton-proton collision data at

s

=
14

TeV

to ATLAS. This contribution provides details of the broad and deep program of measurements and searches planned by ATLAS for the HL-LHC. The higher centre-of-mass energy and increased integrated luminosity will allow ATLAS not only to improve the precision of Higgs boson, electroweak boson, and top quark measurements, but also to extend the sensitivity of searches for beyond-the-Standard-Model processes with small cross sections. Many of the projections use detailed detector simulations to model the performance of the proposed ATLAS detector upgrades.
DANSS experiment: current status and future plans
Authors: Svirida D 
Published: December 2020

Abstract
DANSS is a solid scintillator antineutrino detector located right below a 3 GWth reactor of the Kalininskaya NPP. One cubic meter of the sensitive volume with fine segmentation makes it possible to achieve an unprecedented counting rate of about 5000 IBD events per day, keeping the level of cosmic background below 2%. New physics with sterile neutrino is searched for by performing spectral measurements at varying distance from the reactor core. Contributions to the applied antineutrino physics include reactor power measurements and fuel analysis. Commissioned in 2016, DANSS accumulated about 4 million antineutrino events by this fall. Advances in the data analysis will be reported, including improvements in the energy calibration and the optimization of the selection cuts. DANSS upgrade plans include new scintillator strips with higher light collection efficiency and better homogeneity. Expected improvement in the energy resolution will significantly increase the experiment sensitivity to the light sterile neutrino.
Evaluation of the productivity for new design single slope solar still at different saltwater depth
Authors: Alwan Naseer T , Shcheklein S E , Ali Obed M 
Published: December 2020

Abstract
The solar still's productivity affected by various conditions such as design, operational and environmental conditions. The current study aims to investigate the effect of water depth on the suggested solar still productivity. The results showed that the productivity decreased with increasing the basin water depth from 1 cm to 3 cm, and the higher freshwater productivity obtained at lower water depth. It is found that the productivity of solar still at 1 cm water depth started early in comparison with the other two depths (2 and 3 cm), the highest distillate for the three perfect days it was recorded with the lowest water depth of 1 cm, while the lowest distillate was with the largest depth 3 cm. Accumulated distillate during 10 hours from 8:00 am to 18:00 pm was 1.6,1.35 and 1.05 L/m
2, for three perfect days 20, 22 and 24.03.2019 and for the three water depths 1, 2 and 3 cm, respectively. the estimated production cost of one liter of freshwater form single slope solar still model found to be 0.033 $, 0.041 and 0.05 $ with 1, 2 and 3 cm water depths respectively.
Restoring function of the orbiting electron wave packet
Authors: Kumar Vineet 
Published: December 2020

Abstract
About the reference line as a closed curve along which electron moves at a discrete distance from the nucleus of atom, if asked, locally, is there any distribution alike then it is simple to answer yes. This is due to the group of wave of electron protrudal as wave packet. Revolving around the nucleus with certain kinetic energy determines the peculiar wave length, in a way that higher the energy lower the wavelength is as suggested by de Broglie, does this means that with respect to local points on closed curve the energy is distributed to every wave lines, yes it means. But, when asked in comparative to classical spring-mass oscillating system revolving, is there any restoring part in the orbiting electron wave packet then this is important to know. This paper based on the velocity operator cataloging along with its correspondence to energy-frequency relation discuss about the restoring function of orbiting electron wave packet and its importance in the orbital angular momentum.
Influence of quantum correction on the Jeans instability of strongly coupled magnetized plasma
Authors: Dashora R , Pathan T A , Sutar D L , Pensia R K , Patidar A K 
Published: December 2020

Abstract
It is shown that the Jeans instability condition of strongly coupled finitely conducting gaseous plasma is reduced in the presence of magnetic field and quantum correction. The linearized equations are constructed by using the Quantum magneto-hydrodynamic (QMHD) model. With the help of the normal mode analysis method, a general dispersion relation is obtained. This dispersion relation is discussed by a different mode of propagation. In this paper, it has been found that, quantum correction stabilizes the growth rate of the organization but the relaxation time and electrical resistivity destabilize the growth rate in the transverse mode of propagation. Further, the modified Jeans criterion of the instability of the magnetized plasma system has been also found.
Green synthesis of silver nanoparticles from Justicia adhatodaplant extract with its diverse properties
Authors: Rajalekshmi  , Lohithan Roshny , Raj Rakhi , Prakash Priyanka , Santosh Abhirami , Theertha V , Chandran Smitha 
Published: December 2020

Abstract
In the past few years, the science of nanostructure and technology has gained magnificent attention in the worldwide area of research and technology because of its capability to show various applications which are high thermal and electrical properties, magnetic properties, optical properties, catalytic properties, mechanical properties etc. These properties suits them for different technology and uses such as drug design, pharmaceuticals, space applications, cosmetics, medical industries, photo imaging, nano sensors used for the detection and monitoring of biomolecules. It is also suitable in the environmental field of mosquiticidal, antimicrobial properties. This article is basically focused on the synthesis of silver nanoparticles in a greener procedure by using the leaves of Justicia adhatoda (also called as Malabar nut) which is a medicinal plant used for cough, asthma, allergic conditions, excessive uterine bleeding, heavy menstruation etc. and is seen in various parts of India. The silver nanoparticles once synthesized were characterized using UV-Visible spectroscopy and XRD technique. Later, the particles were analysed for antimicrobial activity against two strains of microorganisms. This greener method that we used is simple, economically feasible, environment friendly and does not produce any harmful substances.
Chemical and electrochemical corrosion studies of ricinus communis oil based poly(urethane-ricinoleamide) coatings
Authors: Kashif Mohd , Anjum Ansar 
Published: December 2020

AbstractIn view of the depletion and possible exhaust of fossil fuels in near future, enormous increase in the cost of petroleum products and production of volatile organic compounds (VOC) by synthetic polymers and their application, the proposed article reports the development of sustainable resource based high performance Ricinus communis oil (Castor Oil) [RC] poly(urethane-ricinoleamide) [PUR] corrosion resistant coatings on mild steel. The physico-mechanical properties were investigated using standard methods. The corrosion resistance performance of PUR coatings was evaluated by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) in acid (3.5 wt% HCl) and alkaline (3.5 wt% NaOH) mediums. The weight loss measurement was also carried out under tap water (Cl- ion 63 mg/l; Conductivity 0.953 mS/A). Salt mist test (5 wt% NaCl) was performed on these coatings. The effect of additional –OH functionality of RC oil on the corrosion resistance performance of PUR coatings was also discussed. These investigations reveal that the PUR coatings provide protection to the mild steel by reducing the corrosion current density by 104 times as compare to bare MS. These coatings also exhibits higher corrosion resistance performance as compared to other reported sustainable resource based coating systems, hence show good potential for their commercial application.
A review: high power density motors for electric vehicles
Authors: Sudha B , Vadde Anusha , Sachin S 
Published: December 2020

Abstract
The review of High Power Density Motor (HPDM) is presented, the high power density refers to ratio of output power to volume of the motor. As a result even a small envelope motor can have high power output. HPDM are also known as low speed high torque motors. The HPDM are compact, lightweight, has high torque and less cogging torque, finding application in automotive field, especially in electric and hybrid electric vehicles. This paper analyses the design, performance and efficiency of various HPDM. Comparative analysis of thirteen different HPDM are reviewed and tabulated for power density, speed, weight, rating and its applications.
Appraisal of motion estimation techniques in video compression
Authors: Aruna J , Jeyalakshmi C , Priyadarshini K 
Published: December 2020

Abstract
In this paper, plan to propose a new motion estimation technique similar to that of estimation methods such as full search 3ss,4ss, block matching approaches and parametric motion estimation. Motion Estimation is mainly used to estimate the motion or error in an object. It can easily identify and tracks the movements of object in a frame. In this paper to present a detailed survey of motion estimation techniques and various methods of searching methodologies are also analyzed. Investigation shall also be carried out to estimate the motion to enrich the quality of decompressed video by analyzing the compression error. A study on not only the design of new motion estimation algorithm but also error free compression is going to be the main objective.
Miniaturized cpw-fed conformal antenna for guided missiles
Authors: Gopi Dattatreya , Chandra A R G , Mouli K , Janardhan Reddy V , Chaitanya G K , Ramu S 
Published: December 2020

Abstract
A conformal wing-shaped patch (WSP) antenna is designed and investigated in this paper. Coplanar waveguide (CPW) feed is used to get high impedance matching and better radiation pattern. The WSP antenna is designed on Kapton polyimide substrate material measuring 20 × 30 × 0.1 mm3. It offers the impedance bandwidth of 630 MHz (6.55 GHz -7.18 GHz), 560 MHz (9.80 GHz -10.36 GHz), 560 MHz (9.80 GHz -10.36 GHz) at resonant frequencies 6.97 GHz, 10.12GHz, 15.78GHz respectively. The reflection coefficients are obtained at -17.42 dB, -16.39dB, -18.23dB for the resonant frequencies. To analyze the conformability of the WSP antenna, the model is tested by mounting on the guided missile. The performance of the antenna is good and small deviations are observed with a shift of 30 MHz, 120MHz, 380MHz in the reflection coefficient. The compactness and conformal design with multi-band support proves the antenna suitable for future military applications.