bluuebunny/crossref_metadata_2025_split huggingface dataset:
A novel image encryption scheme based on Logistic cosine cascade maps
Authors: Ma Wenzheng , Yu Tingting , Wang Zhuang , Li Xianli 
Published: February 2023

Abstract
A two-dimensional Logistic cosine cascade map (2D-LCCM) and a three-dimensional Logistic cosine cascade map (3D-LCCM) are proposed based on a logistic map and infinite collapse cascade model. We analyze the chaotic properties of 2D-LCCM and 3D-LCCM, such as Lyapunov exponential spectrum, attractors, and complexity, which show that the 2D-LCCM and 3D-LCCM are hyperchaotic and have large chaotic regions. We also proposed a DNA encryption algorithm based on double chaotic maps. 2D-LCCM was used for scrambling and 3D-LCCM for diffusion. First, the sequence no-duplicate zigzag transform (SNZT) is used to scramble the plaintext. Z-transform is applied to the permutation sequence to make the sequence more random. Then a repetition-free permutation associated with the plaintext is applied to each block, and the pixel position is effectively scrambled. Finally, DNA diffusion is performed using DNA coding to diffuse pixel values. Simulation results show that the algorithm has a good encryption effect, high efficiency and anti-interference performance. Therefore, the proposed new hyperchaotic map and DNA encryption algorithm can be effectively applied to the process of image encryption.
Enhancing the spectrum of timed Dicke state via squeezing a cavity mode
Authors: Zhou Chunxiao , Cao Binfang , Yang Guang , Shang Xue 
Published: February 2023

Abstract
In this work we present transmission spectra of a two atom timed Dicke state in an optical cavity which is subject to the parametric driving. In the proposed scheme, the parametric driving can squeeze the cavity mode and exponentially enhance the atom-cavity interaction. We show that the interaction between the timed Dicke state and squeezed cavity mode induces the quantum interference and normal mode splitting on the transmission spectra. In addition, we demonstrated that the spectra intensities are exponential quadratic enhanced under the parametric driving, which may provide a feasible scheme for sensitivity enhancement of the single photon measurement.
First-principles study of the strain effect with half-metallic ferromagnetism in Cd
1−x

V

x

Te alloys: supercell approaches
Authors: Essebbahi L , Goumrhar F , Drissi L B , Es-Semyhy M , Ahl Laamara R 
Published: February 2023

Abstract
In this work, we study the effect of vanadium (V) dopantson the structural, electronic, and magnetic properties of the CdTe alloys using density functional theory (DFT). The calculations are performed as a function of the concentration of V in the host CdTe semiconductor using a 2 × 2 × 1 tetragonal supercell and a 2 × 2 × 2 cubic supercell. The lattice constants and bulk modulus of Cd
1−x

V

x

Te alloys are determined. The analysis of the density of states shows that the Cd0.75 V0.25Te alloys in both supercells present a total polarization of 100% at the Fermi level, which confirms a stable half-metallic ferromagnetism phase in these materials, in contrast to the Cd
0.9375
V
0.0625
Te and Cd
0.875
V
0.125
Te alloys, which have a polarizability that does not reach 100%. In addition, the electronic band structures are used to estimate the s(p) − d exchange constants mainly resulting from the p − d hybridization between V- 3d and Te-p. Furthermore, the local magnetic moment of V of its free space charge value decreases, leading to the appearance of a small magnetic moment on the Cd and Te sites. Besides, the magnetic stability at different doping concentrations in the ferromagnetic (FM) and anti-ferromagnetic (AFM) states is examined, where the total energy of the systems is considered as a stability criterion. The robustness of the half-metallicity and the curie temperatures under the strain effect are also investigated. Finally, we rely on the binding energy to evaluate the energetic stability of the vanadium in the intrinsic compound CdTe under external deformations.
The

sl2(R)

coalgebra symmetry and the superintegrable discrete-time systems
Authors: Gubbiotti Giorgio , Latini Danilo 
Published: February 2023

Abstract
In this paper, we classify all the variational discrete-time systems in quasi-standard form in N degrees of freedom admitting coalgebra symmetry with respect to the generic realisation of the Lie–Poisson algebra

sl

2

(
R
)

. This approach naturally yields several quasi-maximally and maximally superintegrable discrete-time systems, both known and new. We conjecture that this exhausts the (super)integrable cases associated with this algebraic construction.
Non-perturbative production of fermionic dark matter from fast preheating
Authors: Klaric J. , Shkerin A. , Vacalis G. 
Published: February 2023

Abstract
We investigate non-perturbative production of fermionic dark matter in the early universe.
We study analytically the gravitational production mechanism accompanied by the coupling of
fermions to the background inflaton field. The latter leads to the variation of effective fermion
mass during preheating and makes the resulting spectrum and abundance sensitive to its parameters.
Assuming fast preheating that completes in less than the inflationary Hubble time and no
oscillations of the inflaton field after inflation, we find an abundant production of particles
with energies ranging from the inflationary Hubble rate to the inverse duration of preheating.
The produced fermions can account for all observed dark matter in a broad range of parameters. As
an application of our analysis, we study non-perturbative production of fermionic dark matter in
the model of Palatini Higgs inflation.
Performance of NIRCam on JWST in Flight
Authors: Rieke Marcia J. , Kelly Douglas M. , Misselt Karl , Stansberry John , Boyer Martha , Beatty Thomas , Egami Eiichi , Florian Michael , Greene Thomas P. , Hainline Kevin , Leisenring Jarron , Roellig Thomas , Schlawin Everett , Sun Fengwu , Tinnin Lee , Williams Christina C. , Willmer Christopher N. A. , Wilson Debra , Clark Charles R. , Rohrbach Scott , Brooks Brian , Canipe Alicia , Correnti Matteo , DiFelice Audrey , Gennaro Mario , Girard Julian , Hartig George , Hilbert Bryan , Koekemoer Anton M. , Nikolov Nikolay K. , Pirzkal Norbert , Rest Armin , Robberto Massimo , Sunnquist Ben , Telfer Randal , Wu Chi Rai , Ferry Malcolm , Lewis Dan , Baum Stefi , Beichman Charles , Doyon René , Dressler Alan , Eisenstein Daniel J. , Ferrarese Laura , Hodapp Klaus , Horner Scott , Jaffe Daniel T. , Johnstone Doug , Krist John , Martin Peter , McCarthy Donald W. , Meyer Michael , Rieke George H. , Trauger John , Young Erick T. 
Published: February 2023

Abstract
The Near Infrared Camera for the James Webb Space Telescope (JWST) is delivering the imagery that astronomers have hoped for ever since JWST was proposed back in the 1990s. In the Commissioning Period that extended from right after launch to early 2022 July, NIRCam has been subjected to a number of performance tests and operational checks. The camera is exceeding prelaunch expectations in virtually all areas, with very few surprises discovered in flight. NIRCam also delivered the imagery needed by the Wavefront Sensing Team for use in aligning the telescope mirror segments.
SOFIA+FORCAST Lunar Legacy Project Processing Procedure
Authors: Arredondo A. , Honniball C. I. , Lucey P. G. , Reach W. T. , Malaret E. R. , Thorpe A. 
Published: February 2023

Abstract
The aim of the Lunar Legacy Project is to map the distribution of water on the Moon’s surface through the detection and characterization of the 6 μm spectral band indicative of molecular water. Spectra were taken with the Faint Object infraRed Camera for the SOFIA Telescope instrument on the Stratospheric Observatory for Infrared Astronomy (SOFIA) between 2018 and 2022. This paper describes the processing steps necessary to reduce the raw data downloaded from the SOFIA archive to create flux-calibrated spectra. The reduction mostly requires the SOFIA Redux package which can be downloaded from the SOFIA website, and some steps in the process require scripts written by our team in Python.
Twin cogenesis
Authors: Feng Wan-Zhe , Yu Jiang-Hao 
Published: February 2023

Abstract
We investigate a cogenesis mechanism within the twin Higgs setup that can naturally explain the nature of dark matter, the cosmic coincidence puzzle, little hierarchy problem, leptogenesis, and the tiny neutrino masses. Three heavy Majorana neutrinos are introduced to the standard model sector and the twin sector respectively, which explain the tiny neutrino masses and generate the lepton asymmetry and the twin lepton asymmetry at the same time. The twin cogenesis mechanism applies to any viable twin Higgs model without an explicit

Z

2

breaking in the leptonic sector and evading the ΔN
eff constraint. We illustrate the twin cogenesis mechanism using the neutrino-philic twin two Higgs doublet model, a newly proposed model to lift the twin neutrino masses with spontaneous

Z

2

breaking. The dark photon with a Stueckelberg mass


(
10
)

MeV ensures the energy in the twin sector as well as the symmetric component of twin sector particles can be depleted. The lightest twin baryons are the dark matter candidates with masses of approximately 5.5 GeV, which explains naturally the amount of dark matter and visible matter in the Universe are of the same order. We also demonstrate twin cogenesis in the fraternal twin Higgs setup, in which the dark matter candidate is the twin bottom bound state

Ω

b

′

b

′

b

′

′

.
The physics basis to integrate an MHD stable, high-power hybrid scenario to a cool divertor for steady-state reactor operation
Authors: Turco F. , Petrie T. , Osborne T. , Petty C.C. , Luce T.C. , Grierson B. , Odstrcil T. , Van Zeeland M.A. , Liu D. , Casali L. , Boyes W. , Smith S.P. , Shen H. , Kostuk M. , Brennan D. 
Published: February 2023

Abstract
Coupling a high-performance core to a low heat flux divertor is a crucial step for ITER and a Fusion Pilot Plant or DEMO. Experiments in DIII-D recently expanded the steady-state hybrid scenario to high density and divertor impurity injection to study the feasibility of a radiating mantle solution. This work presents the physics basis for trade-offs between density, current drive and stability to tearing modes (TMs) at high β. EC power is crucial to tailor the plasma profiles into a passively stable state, and to eject impurities from the core. Off-axis EC depositions decrease the heating efficiency, but calculated electron heat transport coefficients show that this effect is partially mitigated by improved confinement inside the EC deposition. Additionally, the reduction in pressure is recovered by increasing the density. This favourable scaling of confinement with density was observed in high power plasmas for years, and this work provides a comprehensive explanation. ELITE predictions indicate that a path in peeling-ballooning stability opens up for certain conditions of density, power, q
95 and shaping, allowing the edge pressure to continue increasing without encountering a limit. In the core, calculated anomalous fast-ion diffusion coefficients are consistent with density fluctuation measurements in the toroidicity-induced Alfvén eigenmode range, showing that smaller fast-ion losses contribute to the enhanced confinement at high density. The edge integration study shows that divertor heat loads can be reduced with Ne and Ar injection, but this eventually triggers a cascade of n = 1, 2, 3 core TMs. We can now show that impurity radiation in the core is small and it is not the cause for the drop in confinement at high Ar and Ne injection rates. The overlap between the core TMs is consistent with the loss of pressure as estimated by the Belt model for the coupled rational surfaces. Optimization of these trade-offs has achieved plasmas with sustained H
98y2 = 1.7, f
GW = 0.7 and ∼85% mantle radiation. The scenario and its variations at higher density and on- vs off-axis EC heating has been studied as a candidate for an integrated solution for several reactor designs, such as ITER, ARC, and the ARIES-ACT1 case, showing promising results in terms of fusion power and gain.
Broadening of microwave heating beams in the DIII-D tokamak by edge turbulence
Authors: Brookman M.W. , Holland L.A. , Thomas M.B. , Austin M.E. , Barada K. , Gentle K.W. , La Haye R.J. , Leddy J.B. , Petty C.C. , Rhodes T.L. , Yan Z. , Vann R.G.L. , Köhn-Seemann A. 
Published: February 2023

Abstract
We have demonstrated for the first time that turbulent plasma density fluctuations in the edge of the DIII-D tokamak are responsible for substantial broadening of an injected microwave beam by successful quantitative comparison between experimental observations and first principles 2D full-wave simulations. The broadening of the beam has important implications for control of tokamak discharges through localized electron cyclotron deposition needed for eliminating magnetohydrodynamic instabilities. This new predictive capability is mandatory to design & operate present & future tokamaks in such a way that microwave heating schemes achieve their intended objectives.
Assessment of the technical condition of bridge crossings on the main canals of irrigation systems
Authors: Bandurin M A , Prikhodko I A , Bandurina I P , Rudenko A A 
Published: February 2023

Abstract
Currently, it is necessary to assess competently and timely the technical condition of long-operated bridge crossings on the main canals of irrigation systems with increasing loads. The article considers structures with various defects and damages by the example of the Abinsky irrigation system of the Lower Kuban, examines the history of the issue of assessing the remaining resource of bridge structures. It includes the values of coefficients of significance of bridge crossing structures on the main canals of irrigation systems obtained by the authors based on the results of calculation. When designing irrigation systems, the estimated service life was no more than thirty years. Currently, on average, more than fifty years have already passed since the commissioning of the main irrigation systems, for example, in Krasnodar Territory. At the moment, the determination of the true value of the remaining resource is massively in demand not only in the construction field and hydraulic engineering, but also in many other branches of industrial production. For more effective control over the technical condition of bridge crossings on the main canals of irrigation systems, scientific and practical interest is primarily not only an understanding of the actual condition of the structure at the time of the survey, but also its alternative change, i.e. the forecast of its remaining resource. Assessment of the technical condition of the bridge crossing structures on the main canal is determining the possibility of their further long-term operation, the need for strengthening, reconstruction of bridge crossings on the main canals of irrigation systems.
Efficiency of innovative technologies in agriculture and water industry
Authors: Zolotarev N V , Korchevskaya Yu V , Trotsenko I A 
Published: February 2023

Abstract
Flooding of agricultural areas negatively affects soil fertility, phytomass formation regimes and productivity of natural phytocenoses. Due to the transition to the digitalization of agriculture, it became possible to model various natural processes, including the movement of water flows in soils. Various software options are used to model flooding processes, which solves local problems and is quite expensive. Spreadsheets are an affordable solution to this problem. When implementing computer modeling using the finite difference algorithm in spreadsheets, it is necessary to rely on physical modeling of groundwater movement processes. The distribution of flooding is simulated at the stand reflecting the plane-parallel nature of groundwater movement. The analysis of the calculation results given in the paper revealed errors in the obtained results. The reason for discrepancy in the study results was determined based on the obtained data.
Use of centrifugal pumps with canned asynchronous motors in sprinkler irrigation systems in a finely dispersed mode of operation
Authors: Chernykh A G 
Published: February 2023

Abstract
The formation of new high-tech markets in the agro-industrial complex should be based on a systematic approach to achieve a number of goals, including meeting the mid-spatial needs of crops for water and dissolved nutrients. The use of such technologies in irrigation involves the design and subsequent technical implementation of the system, taking into account the achievement of a number of goals, in particular, the ability to control the irrigation process by meeting the specific needs of individual plants, and not irrigation, in which the process parameters are averaged over the entire sown area. The paper presents a scheme and algorithm for the operation of a sprinkler irrigation system with hydraulic, electric and reciprocating machines, which makes it possible to obtain the required target values of integral performance indicators, uniformity of water supply and relative infiltration rate for the irrigated area in the process of its practical implementation. Taking into account various combinations of parameters of the main mechanisms of the irrigation system under study, equilibrium and material balance equations are written for dynamic models corresponding to these mechanisms. For the accepted ratio, which determines the kinetic energy of a drop per unit area, an expression is obtained for calculating the speed of a drop in air with a variable mass. The given scheme of the network makes it possible to ensure the supply of water for irrigation, taking into account the degree of remoteness of the irrigated area from the source of water supply and, secondly, the possible combination of options for its operation in relation to two irrigation methods: gravity and mechanical water supply using a diesel pumping unit and a sealed centrifugal pump with a canned asynchronous motor.
Effect of deep softeners on irrigation, salt washing and cotton yield on soils whose mechanical composition is heavy and meliorative status is difficult
Authors: Juraev A K , Khamidov M Kh , Juraev U A , Atamuradov B N , Murodov O U , Rustamova K B , Najmiddinov M M 
Published: February 2023

Abstract
In the article, studies were conducted on the economy of quality saline washing and irrigation water of saline soils by deepening medium coarse soils with a mechanical content of melioration, plaster, salinity in the conditions of Bukhara region. In experiments, basically, there were three ways to soften the field: plowing in the first experiments at a depth of 35 cm, plowing in the second experiment at 60 cm, and plowing in the third experiments at a depth of 80 cm. During the experiments, in the first variant of the studies, the norm of salt washing was set to 6480 cbm/ha, in the second variant to 5210 cbm/ha and in the third variant to 5010 cbm/ha. First studies in irrigation of Bukhara included 102 varieties, that is, in the control variant to 5821 cbm/ha, in the second variant to 5284 cbm/ha and in the third variant to 5100 cbm/ha. They were watered 5 times during the season. At the same time, high quality cotton was harvested due to the increase in the cotton yield to 0.39 t/ha in variant 2 and 0.129 t/ha in variant 3 compared to the control. And the land reclamation situation improved. The amount of chlorine ion in the active layer is 0.003 in variant 2 compared to the control. The amount of dry residue decreased by 0.058% in variant 2 and the amount of dry residue by 0.063% in variant 3.
Efficiency of drip irrigation technology of cotton in saline soils of Bukhara oasis
Authors: Kh Khamidov M , Juraev U A , Buriev X B , Juraev A K , Saksonov U S , Sharifov F K , Isabaev K T 
Published: February 2023

Abstract
This article presents the results of scientific research on the use of cotton drip irrigation technology in conditions of water scarcity, saving water resources, assessing the growth and yield of cotton. At the same time, the technology of drip irrigation in the cultivation of the “Bukhara-102” variety of cotton was compared with the options grown in the traditional way. During the experiments, in the control field for the cultivation of the Bukhara-102 variety of cotton, i.e. in the 1st variant, which was irrigated by land invasion, irrigation was carried out 5 times during the growing season according to the scheme 1-3-1. 1240 cbm·ha-1, the seasonal irrigation norm, was 4780 cbm·ha−1; in drip irrigation in variant 2, the irrigation regime was 8 times. The cotton was irrigated according to the scheme 2-5-1. During the period of cotton growing and irrigation, irrigation works were carried out at the rate of 462-488 cbm·ha−1 and seasonal irrigation at the rate of 3339 cbm·ha−1. Less water was used in 1916 cbm·ha−1. When the effect of drip irrigation technology on the yield of cotton was studied, the yield of cotton in the first variant was 3.58 t·ha−1, while in the second variant of drip irrigation was 4.49 t/ha−1. This is 0.91 t·ha−1 higher than the control variant.
Present-day state of technical water supply system “Kuyimozor” at auxiliary pump station
Authors: Mirzaev M 
Published: February 2023

Abstract
Pumping stations that receive water from the Amu Darya serve to supply high-turbidity water to agricultural crops in adverse weather conditions. This article provides an analysis of the technical water supply system of the Kuyimozor auxiliary pumping station in the Amu Darya Basin. The performance of all elements of the system was thoroughly studied and the turbidity of the water in front of the pumping station was analyzed. Various shortcomings have been identified in the system and conclusions have been drawn on these shortcomings.
Analysis of the HES state of the Kutuzovsky reservoir on the Crimean Peninsula
Authors: Volosukhin Ya V , Kipkeeva P A , Appoeva L I , Bolakova F M , Abaykhanova A A 
Published: February 2023

Abstract
The paper presents the analysis of full-scale observations of the HES state of the Kutuzovsky reservoir, which to date is the last one built in the Crimea. The paper gives graphical description of objects of water body inspection, results of data on deformations (sediments and horizontal displacements of measuring works) occurring in the body of the dam. Documentation on safety assessment of hydraulic structures of the facility is provided. Probable harm of three scenarios with the formation of a hole in the body of a dam, in which hydrodynamic accident takes place, was calculated. Recommendations for further HES operation are given.