bluuebunny/crossref_metadata_2025 huggingface dataset:
ESPRESSO high-resolution transmission spectroscopy of WASP-76 b
Authors: Tabernero H. M. , Zapatero Osorio M. R. , Allart R. , Borsa F. , Casasayas-Barris N. , Demangeon O. , Ehrenreich D. , Lillo-Box J. , Lovis C. , Pallé E. , Sousa S. G. , Rebolo R. , Santos N. C. , Pepe F. , Cristiani S. , Adibekyan V. , Allende Prieto C. , Alibert Y. , Barros S. C. C. , Bouchy F. , Bourrier V. , D’Odorico V. , Dumusque X. , Faria J. P. , Figueira P. , Génova Santos R. , González Hernández J. I. , Hojjatpanah S. , Lo Curto G. , Lavie B. , Martins C. J. A. P. , Martins J. H. C. , Mehner A. , Micela G. , Molaro P. , Nunes N. J. , Poretti E. , Seidel J. V. , Sozzetti A. , Suárez Mascareño A. , Udry S. , Aliverti M. , Affolter M. , Alves D. , Amate M. , Avila G. , Bandy T. , Benz W. , Bianco A. , Broeg C. , Cabral A. , Conconi P. , Coelho J. , Cumani C. , Deiries S. , Dekker H. , Delabre B. , Fragoso A. , Genoni M. , Genolet L. , Hughes I. , Knudstrup J. , Kerber F. , Landoni M. , Lizon J. L. , Maire C. , Manescau A. , Di Marcantonio P. , Mégevand D. , Monteiro M. , Monteiro M. , Moschetti M. , Mueller E. , Modigliani A. , Oggioni L. , Oliveira A. , Pariani G. , Pasquini L. , Rasilla J. L. , Redaelli E. , Riva M. , Santana-Tschudi S. , Santin P. , Santos P. , Segovia A. , Sosnowska D. , Spanò P. , Tenegi F. , Iwert O. , Zanutta A. , Zerbi F.
Published: December 2020

Aims. We report on ESPRESSO high-resolution transmission spectroscopic observations of two primary transits of the highly irradiated, ultra-hot Jupiter-sized planet, WASP-76b. We investigated the presence of several key atomic and molecular features of interest that may reveal the atmospheric properties of the planet.

Methods. We extracted two transmission spectra of WASP-76b with R ≈ 140 000 using a procedure that allowed us to process the full ESPRESSO wavelength range (3800–7880 Å) simultaneously. We observed that at a high signal-to-noise ratio, the continuum of ESPRESSO spectra shows ‘wiggles’, which are likely caused by an interference pattern outside the spectrograph. To search for the planetary features, we visually analysed the extracted transmission spectra and cross-correlated the observations against theoretical spectra of different atomic and molecular species.

Results. The following atomic features are detected: Li I, Na I, Mg I, Ca II, Mn I, K I, and Fe I. All are detected with a confidence level between 9.2 σ (Na I) and 2.8 σ (Mg I). We did not detect the following species: Ti I, Cr I, Ni I, TiO, VO, and ZrO. We impose the following 1 σ upper limits on their detectability: 60, 77, 122, 6, 8, and 8 ppm, respectively.

Conclusions. We report the detection of Li I on WASP-76b for the first time. In addition, we confirm the presence of Na I and Fe I as previously reported in the literature. We show that the procedure employed in this work can detect features down to the level of ~0.1% in the transmission spectrum and ~10 ppm by means of a cross-correlation method. We discuss the presence of neutral and singly ionised features in the atmosphere of WASP-76b.
Spectral properties and polarizabilities for fluorine-like ions with Z = 20–30
Authors: Liu Shi , Cheng Yongjun , Zhang Song Bin
Published: December 2020

Aims. The primary motivation of this paper is to provide accurate atomic properties of F-like ions with Z = 20−30, including energy levels, line strengths, static dipole polarizabilities, and lifetimes. In addition, a detailed analysis is also carried out to explore the convergence and uncertainties of our results.

Methods. Large-scale B-spline relativistic configuration interaction calculations are carried out to generate the atomic properties of F-like ions. The radial parts of one-electron Dirac orbitals are obtained from the relativistic self-consistent field procedure in which the Breit Interaction and QED corrections (vacuum polarization and self-energy terms) are also included. A numerical method, called Emu CI, is adopted to decrease the size of CI matrix significantly without loss of much accuracy.

Results. Energy levels and line strengths for electric-dipole (E1), electric-quadrupole (E2), and magnetic-dipole (M1) transitions are provided for the 250 lowest levels of each system, showing a good agreement with available theoretical and experimental information. The static dipole polarizabilities and lifetimes for the ten lowest states are also reported. A statement for the convergence and uncertainties of our results is presented.
Paleotemperature investigation of the Variscan southern external domain: the case of the Montagne Noire (France)
Authors: Montmartin Clément , Faure Michel , Raimbourg Hugues
Published: December 2020

The Montagne Noire located in the southern part of the French Massif Central represents the northern part of the South-Variscan Foreland. It is subdivided into three parts. The granite-migmatite Axial Zone dome is surrounded by non- or weakly metamorphosed Paleozoic sedimentary series. Both northern and southern flanks of the Montagne Noire dome are deformed by km-scale, south to southeast facing recumbent folds and thrusts sheets. The Raman Spectroscopy of Carbonaceous Material (RSCM) method, carried out in the low-grade metamorphic rocks of the southern flank of the Montagne Noire, yielded temperatures comprised between 400 °C near the dome, and 230 °C in the southern domain. Three Raman geothermometers were used to cover this temperature range. RSCM temperatures comply qualitatively with previous estimates based on illite crystallinity, conodont color alteration, and fluid inclusions carried out in the same area, which document a metamorphic temperature increase towards the dome. The isotherms cut across the different nappe contacts and are oriented parallel to the southern margin of the Axial Zone. This temperature distribution supports the idea that the thermal structure was acquired during the Axial Zone dome emplacement. The thermal structure acquired during the recumbent folds emplacement and burial of the sedimentary series is totally overprinted by the doming event. In addition, in a domain relatively remote from the Axial Zone dome, the RSCM measurements yielded significantly higher temperatures than illite crystallinity. This discrepancy points to a higher sensitivity of RSCM to short-lived thermal events than illite crystallinity, possibly because of more efficient kinetics of the carbonization reaction. On the other hand, high RSCM temperatures analysed far from the Axial Zone, between 300 °C and 360 °C could be explained by the presence of granitic plutons under the foreland basin.
Improving the interfacial properties of para aramid fibers by surface treatment via plasma jet method in atmospheric pressure
Authors: Sarafpour Mojtaba , Ebrahimi Izadyar , Tanha Nadia Rahimi
Published: December 2020

Various methods have been used by the researchers in order to improve the interfacial adhesion of para aramid fibers. In the present research, poly para-phenylene terephthalamide (PPTA) fibers were treated by an innovative method through the utilization of plasma jet in atmospheric pressure using a mixture of oxygen and argon as inlet gases. The effect of the volume ratio of O2/Ar and the treatment time were investigated on the interfacial properties of the fibers via SEM, AFM, ATR-FTIR analyses, and moisture sorption as well as the mechanical tests. SEM images demonstrated significant effect on the surface morphology of the fibers. In addition, ATR-FTIR spectra resulted in the creation of COOH, NH2, and OH groups on the surface of fibers. The increase in the surface functionality led to an improvement in the surface adhesion of the fibers, as observed from the pull-out tests (a maximum of 31% improvement) and moisture sorption tests (a maximum of 54% improvement). According to the results of the tensile and pull-out tests via the design expert software, the optimum condition predicted that using atmospheric pressure plasma jet employing O2/Ar volume ratio of 45.54/54.46% for 20 min results the best adhesion between the fibers and resin.
Rear surface passivation of ultra-thin CIGS solar cells using atomic layer deposited HfOx
Authors: Birant Gizem , Mafalda Jorge , Scaffidi Romain , de Wild Jessica , Buldu Dilara Gokcen , Kohl Thierry , Brammertz Guy , Meuris Marc , Poortmans Jef , Vermang Bart
Published: December 2020

In this work, hafnium oxide layer is investigated as rear surface passivation layer for ultra-thin (550 nm) CIGS solar cells. Point contact openings in the passivation layer are realized by spin-coating potassium fluoride prior to absorber layer growth. Contacts are formed during absorber layer growth and visualized with scanning electron microscopy (SEM). To assess the passivating qualities, HfOx was applied in a metal-insulator-semiconductor (MIS) structure, and it demonstrates a low interface trap density in combination with a negative density of charges. Since we used ultra-thin devices that are ideal to probe improvements at the rear, solar cell results indicated improvements in all cell parameters by the addition of 2 nm thick HfOx passivation layer with contact openings.
Tribonacci graphs
Authors: Demirci Musa , Cangul Ismail Naci
Published: December 2020

Special numbers have very important mathematical properties alongside their numerous applications in many ﬁelds of science. Probably the most important of those is the Fibonacci numbers. In this paper, we use a generalization of Fibonacci numbers called tribonacci numbers having very limited properties and relations compared to Fibonacci numbers. There is almost no result on the connections between these numbers and graphs. A graph having a degree sequence consisting oftsuccessive tribonacci numbers is called a tribonacci graph of ordert. Recently, a new graph parameter named as omega invariant has been introduced and shown to be very informative in obtaining combinatorial and topological properties of graphs. It is useful for graphs having the same degree sequence and gives some common properties of the realizations of this degree sequence together with some properties especially connectedness and cyclicness of all realizations. In this work, we determined all the tribonacci graphs of any order by means of some combinatorial results. Those results should be useful in networks with large degree sequences and cryptographic applications with special numbers.
Comments on the use of block methods for solving singular boundary value problems
Authors: Ramos Higinio
Published: December 2020

Singular boundary-value problems appear frequently on the modellization of many physical phenomena as in catalytic diﬀusion reactions, chemical kinetics, thermal-explosion theory, or electro hydrodynamics, among others. The singular Lane-Endem equation is a typical kind of equation modelling some of those problems. Unfortunately, just in few occasions the exact solutions can be obtained. In this situation the block methods have been used largely for approximating diﬀerent kind of diﬀerential problems. We propose its use for solving singular boundary value problems. The proposed strategy consist in a block method combined with an appropriate set of formulas which are developed at the ﬁrst subinterval to circumvent the singularity at the left end of the integration interval. Some examples are presented to validate the eﬃciency of the proposed strategy.
Tykhonov triples and convergence results for history-dependent variational inequalities
Authors: Sofonea Mircea
Published: December 2020

We deal with the Tykhonov well-posedness of a time-dependent variational inequality deﬁned on the unbounded interval of time ℝ+= [0, +∞ ), governed by a history-dependent operator. To this end we introduce the concept of Tykhonov triple, provide three relevant examples, then we state and prove the corresponding well-posedness results. This allows us to deduce various corollaries which illustrate the continuous dependence of the solution with respect to the data. Our results provide mathematical tools in the analysis of a large number of history-dependent problems which arise in Mechanics, Physics and Engineering Sciences. To give an example, we consider a mathematical model which describes the equilibrium of a viscoelastic body in frictionless contact with a rigid foundation.
Genetic algorithm for solving transportation problems on networks with one source and multiple sinks
Authors: Paşa Tatiana
Published: December 2020

In this paper we propose a genetic algorithm for solving the nonlinear transportation problem on a network with multiple sinks and concave piecewise cost functions. We prove that the complexity of one iteration of the algorithm is O(n2) and the algorithm converges to a local optimum solution. We show that the algorithm can be used to solve large-scale problems and present the implementation and several testing examples of the algorithm using Wolfram Language.
The soliton solutions for semidiscrete complex mKdV equation
Authors: Babalic Corina N.
Published: December 2020

The semidiscrete complex modiﬁed Korteweg–de Vries equation (semidiscrete cmKdV), which is the second member of the semidiscrete nonlinear Schrődinger hierarchy (Ablowitz–Ladik hierarchy), is solved using the Hirota bilinear formalism. Starting from the focusing case of semidiscrete form of cmKdV, proposed by Ablowitz and Ladik, we construct the bilinear form and build the multi-soliton solutions. The complete integrability of semidiscrete cmKdV, focusing case, is proven and results are discussed.
Impact of external applied currents in BVP model
Authors: Gautam Avinita , Priyadarshi Anupam
Published: December 2020

The understanding of the activity of neurons in the brain has been modeled as nonlinear systems using mathematical modeling for decades. Nonlinearity in brain dynamics is complex structure to do mathematically but computational techniques make this area of research quite interesting and easy to study the dynamics. With advancement of new technology, mathematical and computational studies are more preferable to understand the behavior of neurons in a single cell to global cognitive process. In the present study, the impacts of diﬀerent externally applied currents on the behavior of neurons in a simple BVP model (Bonhoeﬀer-Vander Pol Model) are analyzed thoroughly. The results of BVP model are similar to the characteristics of neurons shown by the Hodgkin-Huxley Model. In the BPV model, when system is stable, neurons are in resting-state. Unlike Hodgkin-Huxley model which follows all-or-none law, the BVP model does not follow this all-or-none rule. In the BVP model, there is an intermediate phase where no spike forms, but when suﬃciently large input applied then spikes emerge. On applying constant current in BVP model, system is stable while it exhibits oscillatory behavior when current is applied externally above threshold value of it. If sinusoidal, continuous wavelet, and har wavelet form of external applied currents are injected then continuous ﬁring emerges which have several interesting dynamics. Numerical simulations have been performed to understand the bifurcation analysis of the BVP model. Oneparameter and two-parameter bifurcation diagrams have been drawn in which threshold current values are discussed.
Analyzing Convergence of Distributed FxLMS Algorithm
Authors: Wang Lei , Chen Kean , Xu Jian , Tian Xuhua
Published: December 2020

The distributed FxLMS algorithm based on acoustic sensor networks can solve the problem of the increased computational complexity caused by a large-scale active noise control (ANC) system. Firstly, the distributed algorithm is deduced theoretically. In the ANC process based on sensor networks, the iteration of partial weight coefficients is replaced by the real-time communication of weight coefficients among nodes. Then the convergence characteristics of the distributed algorithm in its mean and mean square senses are analyzed and verified with simulation. Finally, the noise reduction effects of different algorithms are compared. The results show that the distributed algorithm, with its computational complexity reduced, can achieve the same noise reduction effects as the centralized ANC system.
Modeling and Analysis of Deformed Parafoil Recovery System
Authors: Guo Yiming , Yan Jianguo , Xing Xiaojun , Wu Cihang , Chen Xiaoran , Li Fenghao
Published: December 2020

The aerodynamic calculation of parafoil is the key technology of the parafoil recovery system modeling. In order to further improve the model accuracy, the lift coefficient and drag coefficient under the various states are obtained via fluid structure coupling method by considering the influence of the aerodynamic deformation and trailing edge deviation. Then, the least square method is used to identify the quantitative relationship among the aerodynamic coefficient, deflection, and deformation so as to improve the 6-DOF parafoil recovery system model. The results show that the structure of parafoil considering deformation and deflection is not only similar to the actual parafoil, but also the obtained aerodynamic parameters are more close to the wind tunnel test, which proves that the present method has certain significance for precisely modeling the parafoil recovery system.
3D Path Planning Method for UAV Based on Improved Artificial Potential Field
Authors: Guo Yicong , Liu Xiaoxiong , Zhang Weiguo , Yang Yue
Published: December 2020

Path planning is the key technology for UAV to achieve autonomous flight. Considering the shortcomings of path planning based on the conventional potential field method, this paper proposes an improved optimization algorithm based on the artificial potential field method and extends it to three-dimensional space to better achieve flight constrained 3D online path planning for UAVs. The algorithm is improved and optimized aiming at the three problems of goal nonreachable with obstacle nearby (GNWON), easy to fall into local minimum, and path oscillation in traditional artificial potential field method. First, an improved potential field function with relative distance is used to solve the GNWON, and an optimized repulsive potential field calculation method based on different obstacles or threat models is proposed to optimize the planned path. Secondly, in order to make the drone jump out of the local minimum trap, a method of setting heuristic sub-target points is proposed. For local path oscillation, a method using memory sum force was proposed to improve the oscillation. The simulation results show that the improved optimization algorithm in this paper effectively makes up for the shortcomings of the traditional artificial potential field method, and the designed 3D online path planning algorithm for the UAV is practical and feasible.
Research on Control Method of PEMFC Cathode Oxygen Excess Ratio
Authors: Xia Lei , Zhao Dongdong , Li Fei , Wang Xipo , Meng Jinhao
Published: December 2020

Proton exchange membrane fuel cell (PEMFC) is considered to be a promising new energy technology due to its high power density and low operating temperature. Oxygen excess ratio (OER) is one of the main factors that affect the performance of fuel cell systems. The key of OER control is to prevent the "oxygen starvation" phenomena by controlling the air flow input of the cathode. The net output power is optimized to improve the performance of the system while maintaining the system working properly. First of all, a sixth-order dynamic model of PEMFC based on the air supply system is established in MATLAB, and the function equation of the oxygen excess ratio to the load current is obtained. Based on PID control, fuzzy control and super-twisting second-order sliding mode control, an improved fuzzy-sliding mode control strategy is proposed to realize OER control. Simulation results show that this method has good robustness and fast adjustment performance.
Research on Dynamic Characteristic of Rudder Transmission System with Multiple Clearance Joints
Authors: Wan Qi , Liu Geng , Song Chunyu , Ma Shangjun , Tong Ruiting
Published: December 2020

In order to meet the characteristics including small clearance, heavy load and large contact area of joints existed in rudder transmission system, a new normal contact force model is established, which is suitable for the large-area contact process and considers the coefficient of nonlinear variable stiffness as well as the axial length of bearing. The applicability of this model is verified by simulations under some conditions with different clearance size, restitution coefficient, initial collision speed and bearing's axial length. Furthermore, through the user-defined subroutine interface in ADAMS software, this modified contact force model is compiled and linked into the dynamic model of the rudder transmission system. The simulation results show that the dynamic response of the system with multiple clearance joints is not a simple superposition of that with one single clearance, and the dynamic interaction between these joints intensifies the oscillation and nonlinear characteristics of the system. This study provides a theoretical reference for the structural optimization and control strategy design of aircraft with clearance joints.
Rigid-Body Dynamic Analysis of Multi-Stage Planetary Roller Screw Mechanism
Authors: Li Xin , Liu Geng , Song Chunyu , Fu Xiaojun , Ma Shangjun , Wan Qi
Published: December 2020

Based on the structural characteristics of the multi-stage Planetary Roller Screw Mechanism (PRSM), the motion and force among the different stages are analyzed. In terms of the Newton's second law, the rigid-body motion equations of the multi-stage PRSM without considering the manufacturing and assembly errors are derived. Then, the method for solving the motion equations is given. The forces acting on the parts in the multi-stage PRSM and the motion of the mechanism can be obtained from the present rigid-body dynamic model. The influence of the friction coefficients among the different stages on the dynamic characteristics of the multi-stage PRSM is discussed. The results show that the forces acting on the first-stage PRSM are larger than that acting on the second-stage PRSM, although the nominal radius of the screw in the first-stage PRSM is smaller. The friction coefficient between the nut and the screw in the different stages has the great influence on the efficiency of multi-stages PRSM with small helix angles, while that among the screws in the different stages has the slight effect on the efficiency.
An Improved Gravity Search Algorithm and Its Application in Planar Array Synthesis
Authors: Sun Cuizhen , Ding Jun , Guo Chenjiang
Published: December 2020

An improved gravity search algorithm, adaptive gravity search algorithm (AGSA), is proposed to solve the problem that the gravity neutralization caused by the cumulative effect of particle inertia mass at the end of iteration, which will affect the optimization performance. An adaptive decay factor is designed, which can produce different gravitation values at different iteration stages of the algorithm and accelerate the mining ability of the algorithm at the later iteration stage. In order to enhance the memory ability of the algorithm, the influence of elite particles is added to the realization of the speed to expand the exploration ability. The improved algorithm is used to optimize uniform concentric ring array, the main lobe width optimized by the AGSA is 6.7°narrower and the side lobe level is 5.1 dB and 1.8 dB lower than the algorithm in the literature. It is clear that the pattern obtained by AGSA meets the desired pattern very well. Moreover, when the number of iterations is 2 000, the fitness value of the improved algorithm is increased by 30%. It can be seen that AGSA outperforms the algorithm in the literature in evolutionary speed and accuracy. Sparse concentric ring array also has the same optimization results. The effectiveness of the proposed improved algorithm in solving the array pattern synthesis is proved.
Ground Test and Numerical Simulation on Ground Effect of Ducted Propeller System
Authors: Deng Yangping , Mi Baigang , Zhan Hao , Cao Fei
Published: December 2020

The aerodynamic performances of a ducted propeller system applied in a manned vertical takeoff and landing aircraft considering the ground effect are investigated. Based on the ground test and CFD simulation combined with sliding mesh technique, the thrust and power characteristics of the ducted propeller under different heights between the duct and ground are compared and analyzed, and the influence mechanism of the ground effect on the aerodynamic performance of the ducted propeller is detailed analyzed based on the CFD simulation results. The test and simulation results show that, the ground near the ducted propeller leads to a high-pressure zone to block the jet flow through the outlet of the duct, while an upward rebounded flow with the vortex rings is also generated to affect the aerodynamic forces and powers of both the duct and propeller. As the influence of the high-pressure zone, the thrust of the propeller increases. However, the thrust of the duct decreases when the rebounded flow is inhaled again into the duct. With the increase of the heights between the ground and the ducted propeller, the ground effect is weakened, and the power of the system recovers more quickly than the thrust. In general, the ground effect seriously affect the aerodynamic efficiency of the ducted propeller in near ground hover state, which should be mainly considered in the process of aerodynamic and conceptual design.
Study on Progressive Damage Assessment and Scarf Repair of Composite Honeycomb Structure
Authors: Zhao Zhibin , Xie Yifu , Liu Zhiqi , Yang Pengfei , Xue Xiaofeng , Leng Jiaxing
Published: December 2020

As the widely application of composite honeycomb structure in aircraft Structural Significant Items(SSI) and other structures, the damage assessment and repair scheme because of the impact and other damages have become one of the most concerned issues in the civil aircraft composite structures. In view of the progressive damage assessment of composite honeycomb structure and it's adhesively scarf repair parameter influence, the finite element model based on honeycomb core equivalent model and 3D solid units C3D8 and zero thickness cohesive force unit COH3D8 is established. A special USDFLD program is developed with FORTRAN for ABAQUAS using 3D Hashin criterion Besant criterion and B-K criterion to realize the damage simulation of composite panels, honeycomb cores and adhesive. The relationships between the structural strength recovery rate and the repair parameters such as patch oblique angle, extra layers layup angle and extra layers thickness are studied for the perforation injured honeycomb structure. The results show that the decrease in the patch oblique angle leading to an increase in the internal shear stress of the adhesive, the increase in the angle between the extra layers of the patch and the external load, and the increase in the thickness of the extra layers causing stress concentration and premature instability at the lap edge, will significantly reduce the strength recovery rate of the repaired honeycomb structure. The perfect patch form with 1:10 cut oblique angle and only one extra layer of 0° layup angle is concluded, which achieves the optimal strength recovery effectiveness, reaching 95.72% of the non-damaged honeycomb structure.
Research on the Lissajous Trajectory Transfer of Large Area Mass Ratio Solar Sail Spacecraft
Authors: Duan Xun , Yue Xiaokui
Published: December 2020

Considering that the solar sail spacecraft working in the Lissajous orbit will be affected by the shadow of the earth or the solar wind, which sometime makes the spacecraft unable to work, we try to use the solar light pressure as the thrust to carry out the Lissajous orbit transfer in advance. Because the solar pressure parameters(cone angle, clock angle and solar pressure factor) will change the position of the libration points, we propose the idea of splicing the old and new libration point manifolds to transfer the escape spacecraft to the new Lissajous orbit to achieve orbit maintenance. The simulation results show that besides changing the cone angle and the solar pressure factor, the clock angle can also achieve orbit transfer, and the influence of the solar pressure factor on the periodic orbit is greater than the other two. This study provides a reference for the solar sail spacecraft in the aspects of periodic orbit transfer, orbit maintenance and avoidance of the earth's shadows.
On the stability of Scott-Zhang type operators and application to multilevel preconditioning in fractional diffusion
Authors: Faustmann Markus , Melenk Jens Markus , Parvizi Maryam
Published: December 2020

We provide an endpoint stability result for Scott-Zhang type operators in Besov spaces. For globally continuous piecewise polynomials these are bounded from H3/2 into B3/22,∞; for element wise polynomials these are bounded from H1/2 into B1/22,∞. As an application, we obtain a multilevel decomposition based on Scott-Zhang operators on a hierarchy of meshes generated by newest vertex bisection with equivalent norms up to (but excluding) the endpoint case. A local multilevel diagonal preconditioner for the fractional Laplacian on locally refined meshes with optimal eigenvalue bounds is presented.
Further results on a space-time FOSLS formulation of parabolic PDEs
Authors: Gantner Gregor , Stevenson Rob
Published: December 2020

In [2019, Space-time least-squares finite elements for parabolic equations, arXiv:1911.01942] by Führer and Karkulik, well-posedness of a space-time First-Order System Least-Squares formulation of the heat equation was proven. In the present work, this result is generalized to general second order parabolic PDEs with possibly inhomogenoeus boundary conditions, and plain convergence of a standard adaptive finite element method driven by the least-squares estimator is demonstrated. The proof of the latter easily extends to a large class of least-squares formulations.
Emotional intelligence as a structure-forming component of the future teacher’s psychological culture
Authors: Rudakova O.A. , Ponomareva E.Yu.
Published: December 2020

The article deals with the concept of emotional intelligence as a structure-forming component of the future teacher’s psychological culture. The paper substantiates the need to develop this personal quality in future teachers, as well as its importance for successful professional activity. The article analyses the structural components of emotional intelligence in the personal sphere of future teachers. The study provides empirical material for the primary cross-section of diagnostics of emotional intelligence in the personality structure of future teachers.
How to create individual educational trajectories in the informational educational environment
Authors: Krasnopeeva T.O. , Shevchenko A.I. , Romanova I.V.
Published: December 2020

The article considers the issues of designing individual educational trajectories for University students in the informational educational environment from the perspective of personal-oriented, environmental and professionally oriented approaches. The leading research methods are comparative statistical analysis and modeling, the first of which helps to analyze quantitative data that reflect parameters that are important for students’ academic performance and progress in the information educational environment, while the latter allows to model linguistic profiles designed for the individual educational trajectories. The informational educational environment as a unit of the educational space of the discipline “Foreign language” is a set of the following components: resource, informational components and socio-methodological, subject-operational and didactic-methodological sub-components, as well as subject-activity and procedural components.
Methods of organizing competence-oriented classes with students of pedagogical areas of training
Authors: Shestakova L.G. , Richter T.V.
Published: December 2020

Object: to describe the methods of organizing competence-oriented classes with students of pedagogical areas of training. Methods: the leading research methods were the generalization and analysis of pedagogical experience and the processing of quantitative data on the dynamics of indicators of the effectiveness of using the methods of organizing competence-oriented classes with students of pedagogical areas of training. Findings: principles of organizing competence-oriented training with students of pedagogical areas of training (systematic, flexibility, interaction, conscious perspective, professional expediency, activity, activity, ideality, humanism, feedback, reflexivity); revealed the advantages of using competence-oriented classes with students of pedagogical areas of training; formulated types of competence-oriented classes with students of pedagogical areas of training; methods of organizing lecture, seminar and practical competence-oriented classes have been developed; identified types of activities (areas of work) for inclusion in the rating indicators; The indicators for assessing the effectiveness of the described methods of work were determined. Conclusions: the article presents a list of competencies, examples of competence-oriented tasks aimed at their formation and planned learning outcomes; The indicators for assessing the effectiveness of the described methods of work were determined. The article materials can be useful for heads of educational structures of various levels, teachers of higher educational institutions, teachers of schools, parents.
Model for implementing project-based learning at a regional university
Authors: Voronin D.M. , Chaychenko M.V. , Voronina E.G.
Published: December 2020

The project idea is to create a management model of student project activity in a particular University based on empirical research of universities that implement student project activities and analysis of accumulated theoretical data. The purpose of the master’s thesis is to form a management model of student project activities at the State Humanitarian University of technology. The developed model is based on the empirical experience of implementing student project activities in both domestic and foreign universities, as well as the results of a pre-project study that analyzed potential stakeholders. The main elements of the management model are: the formation of a digital project platform, the formation of a motivation system for students and teachers, the creation of a new structural division of the University-the project office and the criteria for evaluating the planned activities. The results of the work are: a management model of student project activities at the State Humanitarian University of technology.
Innovative approaches to training professionals working with young children with disabilities
Authors: Vyatleva Yu.Ye. , Grigorenko N.Yu. , Pokrovskaya Yu.A.
Published: December 2020

The article is devoted to the topical issues of vocational training of experts working with young children with disabilities. The necessity of discussion of the issue is based on the expansion of the age limits of correction influence and the creation of a system of early intervention for families raising children with disorders. According to that, the issue of training highly qualified professionals has become vital both for the system of special education and for those who need professional assistance.
Professional development of a teacher on the Yandex. Textbook platform as a necessary condition for improving the quality of education in a modern school
Authors: Kalinina I.G. , Enova I.V. , Tolkova N.M.
Published: December 2020

The study reveals the current topic of digitalization of modern education. Its importance is due to the transition to a new level of teaching in educational institutions. The study examines the development of professional pedagogical competencies as a fundamental condition that directly affects the quality of the educational process.
Research of the need for continuity in education according to students of pedagogical faculty
Authors: Timokhina T.V. , Starykh L.V. , Epishina L.V.
Published: December 2020

The development of pedagogical science requires constant improvement of modern high-quality continuous education, one of the aspects of which is the unity of the educational space throughout the territory of the Russian Federation and ensuring its continuity at different levels. The purpose of this study is to research the opinion of students - future teachers about the continuity of primary and preschool education at the present stage of implementation of the Federal State Educational Standard (FSES). The results obtained in the course of the study demonstrated the knowledge of the majority of students of modern FSES, which indicates the frequent reference to the texts of teachers in various disciplines and independent study of them by students due to their interest. The research identified problem areas in the implementation of the continuity of preschool education programs and the Educational Methodological Complex (EMC) of primary schools, the need for special training of teachers. Semantic analysis enabled us to identify the most frequent phrases related to the determination of continuity of preschool and primary education. The conclusion about the need for increased attention to the continuity of the initial general and pre-school education, special training for future teachers to the diversified work in this area is made.
Art-therapeutic techniques and methods for working with children of preschool and primary school age
Authors: Tolkova N.M. , Morozova T.N.
Published: December 2020

The article reveals a topical topic of research into the influence of specially organized art-therapeutic techniques and techniques on the level of emotional self-regulation of the personality of children of preschool and primary school age. The need to study it is due to the possibility of emotional, creative self-expression of children in the classroom with the use of art therapy techniques and techniques. The study presents theoretical and practical methods. The results of work with teachers in this direction with children of preschool and primary school age are presented.
Person-centered approach in teaching financial mathematics to students of higher educational institutions
Authors: Vinnikova I.S. , Kuznetsova E.A. , Shpilevskaya E.V.
Published: December 2020

The article discusses the need for purposeful, personality-oriented teaching of financial mathematics to students of higher education. The authors have identified the advantages of a student-centered education system that contribute to the formation of a high-quality financial and economic education of a student of a higher educational institution.
Practice-oriented training of prospective teachers-speech therapists to work with stuttering preschoolers
Authors: Serebryakova N.V. , Shashkina G.R.
Published: December 2020

The article focuses on the matters of studying the diagnostic competencies of prospective speech therapists, their readiness to apply the knowledge acquired in the process of corrective work with stuttering children, as well as the arrangement of the teaching internships for students. The necessity to develop these competencies of prospective speech therapists has to do with the formation of their professional competencies required by the Federal State Educational Standard of Higher Education.
Some psychological aspects of distant teaching
Authors: Grigoriev G.P. , Beresnev A.A.
Published: December 2020

The article presents a short review of works dealing with distant teaching problems and the results of students and lecturers’ survey at a higher educational institution about their attitude to distant teaching and psychological problems arising in the process of implementation. The experiment conducted reveals the major part of students and lecturers’ positive attitude towards the form of distant teaching which is being applied at the present period of time. As the main drawback of distance teaching, the surveyed students pointed out the lack of direct contact with a lecturer (45% of students who rated distance education in a negative way). The revealed important negative aspect of distance teaching is that some students began to spend more time getting ready for classes (21%). 55% of lectures are positive about distance education, and 45% are neutral. There are no people who rated in a negative way or very positive. Among those who gave a positive estimation of distance teaching, 33% of respondents, as well as students, indicate a high structure of educational material. Those lecturers, who have a satisfactory degree of distance teaching skills, but indicate that this work requires a lot of effort, turned out to be 90%.
Forming university students healthy lifestyle through the mastering the discipline “Pedagogy”
Authors: Akimova E.A. , Levchenko N.V. , Maslova T.A.
Published: December 2020

The article deals with the problem of students (future teachers) health. To solve the problem of preserving and strengthening the health of university students, the authors propose a group of methods for the formation of healthy lifestyle (HLS) culture through the mastering the educational discipline of the pedagogical cycle. In the formation of a student`s healthy lifestyle culture the main components are distinguished: cognitive-semantic, emotional-volitional, reflexive-evaluative. The assessment of the levels of healthy lifestyle formation among university students is proposed. Within the framework of the discipline “Pedagogy” in its first module “Introduction to the teaching profession” a developed program “Health as a value” was proposed to second-year students of the Kaluga State University named after K.E. Tsiolkovsky. This program was implemented in the experimental group.
Technical distance learning lecturer
Authors: Burkina M.M.
Published: December 2020

At the present time, a range of educational services to provide distance learning technologies characterized by a huge number of students, a lot of involved educational institutions, the big size and complexity of infrastructure, the large scale of funding, the connection of high-tech services, and many others has been developed in the world. Intensely penetrating all levels of the modern education system, distance learning technologies are a leading tool for improving the education system in higher education implemented in connection with changes in its goals and content, improving the quality and accessibility for various categories of people.
Organizational and methodological aspects of distance learning for children with special educational needs
Authors: Guseynova A.A. , Manuilova V.V.
Published: December 2020

The article considers organizational and methodological aspects of distance learning for children with disabilities, taking into account their special educational needs. The results of a survey of support specialists on the use of distance learning in educational organizations are presented.
Using the cluster approach in the education of the artistic profile
Authors: Doronina M.V.
Published: December 2020

The article discusses the concept of “educational cluster”, describes the features of the cluster approach in aesthetic education in institutions of supplementary education. It is suggested that applying the cluster approach in aesthetic activity, the artistic abilities of children are fully developed. The experiment is described and conclusions are drawn on the topic of the article.
Development of professional creativity in the system of higher pedagogical education on the basis of independent activity
Authors: Camerilova G.S. , Kartavykh M.A. , Ageeva E.L.
Published: December 2020

The article considers the need to develop professional pedagogical creativity of future teachers as a leading trend in the modernization of higher education. The importance of creativity in the training of teachers is justified by modern humanistic tendencies of social development, which determine significant changes in the organization of the pedagogical process in schools. Innovations in the school education space impose special requirements on the personality of the teacher, updating his creative potential. The study defines the essence of the general category “creativity,” based on which the idea of professional and pedagogical creativity is formed. As an important resource for its development, the independent activities of students are justified, which takes the form of leading activities in the system of higher pedagogical education. The work proposes a model for the development of vocational and pedagogical creativity based on creative independence on the example of the training direction “Pedagogical Education,” the profile “Life Safety,” the theoretical and methodological justification of which is presented by the highlighted principles. In their logic, targeted, meaningful, procedural, reflexive-evaluation components are built. A system of independent activities of students has been designed, uniting the algorithmic, reconstructive-heuristic, creative species that are used in the electronic educational environment of Minin University (MOODLE). The process of development of professional-pedagogical creativity is carried out sequentially and includes motivational-targeted, research, and reflection-evaluation stages. The diagnosis showed the effectiveness of the developed model in the conditions of its implementation in training practice.
Interaction of social institutions as a vector of personal development
Authors: Kozlov V.E. , Timofeev A.A. , Sadrislamov G.F.
Published: December 2020

The article examines the potential of the social institutions’ interaction in the context of the personal development and socialization ideas. Considering the traditional Russian mentality and the characteristics of the Russian education system, the authors focus on the new conditions of socialization, revealing the methodology for the effective social practices’ development.
Organization of freelancers training to process economic information
Authors: Lobashev V.D. , Talykh A.A. , Shablikova N.P.
Published: December 2020

Hiring freelancers significantly reduces the general costs: economic costs – payment for just specific work done, hours of work – the contractor is interested in the fastest execution of the order, consumer costs – the freelancer is self-sustainable, energy costs – the contractor is interested in energy saving. The stream of processed economic information is changing its quality. The exchange of structured data itself, being externally organized by the freelancers’ efforts, significantly reduces operational (including transactional) costs.
Preparation of future teachers for tourism and local history activities
Authors: Maslova T.A. , Akimova E.A. , Romanov V.A.
Published: December 2020

The article deals with the process of preparing students for tourism and local history activities. The need to develop students ’ skills in tourism and local history activities is justified by the need to develop components of universal competence specified in the Federal State Educational Standard of Higher Education (FSES HE). The pedagogical conditions necessary for preparing future teachers for tourism and local history activities in higher education are determined. The skills that students should master in the process of preparing for the implementation of tourist and local history activities are highlighted.