bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cation-exchange synthesis of PbSe/ZnSe hetero-nanobelts with enhanced near-infrared photoelectronic performance
Authors: Kang Ping , Zheng Kai-Ge , Wang Zhuo , Chen Li , Guo Zheng 
Published: May 2021

Abstract
To develop excellent photoelectronic and photovoltaic devices, a semiconductor with high photoelectron production efficiency and broad band absorption is urgently required. In this article, novel II-type PbSe/ZnSe hetero-nanobelts with enhanced near-infrared absorption have been synthesized via a facile strategy of a partial cation-exchange reaction and thermal treatment. Derived from ZnSe·0.5N2H4 nanobelts as templates, the belt-like morphology was preserved. Due to the mismatch of the crystal type and parameters between PbSe and ZnSe, the formed PbSe in the form of nanoparticles were separated out and decorated on the nanobelts. Furthermore, the composition ratio of Pb/Zn can be tuned through manipulating the adding amount of Pb2+ cations, the reaction temperature and time. The ultraviolet−visible−infrared diffuse spectra measurements suggest that the as-prepared PbSe/ZnSe hetero-nanobelts exhibited a broad band absorption from 300 to 1000 nm. In addition, they demonstrated excellent photoresponsivity in the same wavelength region and displayed a peak at approximately 840 nm. Finally, the enhanced photoelectronic sensing mechanism was discussed.
Synthetic CT generation from CBCT images via unsupervised deep learning
Authors: Chen Liyuan , Liang Xiao , Shen Chenyang , Nguyen Dan , Jiang Steve , Wang Jing 
Published: May 2021

Abstract
Adaptive-radiation-therapy (ART) is applied to account for anatomical variations observed over the treatment course. Daily or weekly cone-beam computed tomography (CBCT) is commonly used in clinic for patient positioning, but CBCT’s inaccuracy in Hounsfield units (HU) prevents its application to dose calculation and treatment planning. Adaptive re-planning can be performed by deformably registering planning CT (pCT) to CBCT. However, scattering artifacts and noise in CBCT decrease the accuracy of deformable registration and induce uncertainty in treatment plan. Hence, generating from CBCT a synthetic CT (sCT) that has the same anatomical structure as CBCT but accurate HU values is desirable for ART. We proposed an unsupervised style-transfer-based approach to generate sCT based on CBCT and pCT. Unsupervised learning was desired because exactly matched CBCT and CT are rarely available, even when they are taken a few minutes apart. In the proposed model, CBCT and pCT are two inputs that provide anatomical structure and accurate HU information, respectively. The training objective function is designed to simultaneously minimize (1) contextual loss between sCT and CBCT to maintain the content and structure of CBCT in sCT and (2) style loss between sCT and pCT to achieve pCT-like image quality in sCT. We used CBCT and pCT images of 114 patients to train and validate the designed model, and another 29 independent patient cases to test the model’s effectiveness. We quantitatively compared the resulting sCT with the original CBCT using the deformed same-day pCT as reference. Structure-similarity-index, peak-signal-to-noise-ratio, and mean-absolute-error in HU of sCT were 0.9723, 33.68, and 28.52, respectively, while those of CBCT were 0.9182, 29.67, and 49.90, respectively. We have demonstrated the effectiveness of the proposed model in using CBCT and pCT to synthesize CT-quality images. This model may permit using CBCT for advanced applications such as adaptive treatment planning.
Construction of new traveling and solitary wave solutions of a nonlinear PDE characterizing the nonlinear low-pass electrical transmission lines
Authors: Kumar Hitender , Kumar Anand , Chand Fakir , Mehar Singh Ram , Singh Gautam Manjeet 
Published: May 2021

Abstract
In this study, we intend to analyze the traveling and several other solitary wave solutions in the nonlinear low-pass electrical transmission line model using the new mapping method, the new extended auxiliary equation method, and the extended Kudryashov method. A type of traveling and solitary wave solutions emerge, consisting of hyperbolic function, trigonometric, rational, periodic, and doubly periodic solutions that reflect kink, anti-kink wave solitons, bright-dark optical solitons, singular solitons, and other traveling waves. The three integration techniques applied are efficient, effective, and versatile for the creation of new bright, dark, singular, and non-singular periodic and solitary wave propagation solutions in nonlinear low-pass electrical transmission lines. To see the extant physical significance of the considered equation, we present some 2D and 3D figures for some solutions. We compare the obtained results with those obtained in the literature. We investigate and demonstrate the stability of the soliton solutions.
Super total graceful labeling of some trees
Authors: Khasanah I N , Purwanto  
Published: May 2021

Abstract
A graph labeling is an assignment of integers to the edges, vertices, or both of a graph so that it meets to certain conditions. A graph labeling is called total labeling if labeling is given to edges and vertices. Let G be a simple and finite graph having vertex set V(G), edge set E(G), number of vertices p, and number of edges q. A super total graceful labeling of G is a bijection f from V(G) ∪ E(G) to the set {1,2,3,….,p + q} such that f(uv) = |f(u) – f(v)| for every uv ∈ E(G) and f(E(G)) = {1,2,3,…, q}. A graph that admits a super total graceful labeling is called a super total graceful graph. In this paper we show that star graph K
1,n
, spider graph SP(1
n
, 2
m
), and caterpillar graph P
3⨀nK
1 are super total graceful graphs.
Product of bipolar anti fuzzy graph and their degree of vertex
Authors: Rahayu H S , Sulandra I M , Kusumasari V 
Published: May 2021

Abstract
Based on complete bipolar anti fuzzy graphs and on strong bipolar anti fuzzy graphs we can define a new graph through union, join, Cartesian product, and composition of such two graphs. We call the new graph as a product of graphs. In this article we investigate properties of product of bipolar anti fuzzy graphs and product of strong bipolar anti fuzzy graphs. We also construct the degree of a vertex in such the product, namely, the degree of a vertex in the graph which are obtained from product of two given bipolar anti fuzzy graph.
On Frobenius functionals of the Lie algebra M3(ℝ) ⊕ gl3(ℝ)
Authors: Henti  , Kurniadi E , Carnia E 
Published: May 2021

Abstract
In the present paper, we study the Lie algebra written in the semi-direct sum formula of the vector space M3 (ℝ) and the Lie algebra gl3 (ℝ) whose both contain 3×3 real matrices. We denote it by g3 : = M3 (ℝ) ⊕ gl3 (ℝ). The aim of this research is to study the existence of a linear functional such that g3 is the Frobenius Lie algebra of dimension 18. Such the linear functional is called the Frobenius functional. We applied the literature reviews to achieve this result, particularly we study the notion of Frobenius Lie algebra in Ooms and Rais results. The main result of our research is the proof that g3 is Frobenius Lie algebra. For the future research, the existence of a Frobenius functional is still an open problem to study for higher dimensional Lie algebras.
The openness condition for a coadjoint orbit projection of the semidirect product Lie group M((n, p), ℝ) ⋊ GL (n, ℝ)
Authors: Kurniadi E 
Published: May 2021

Abstract
Let G(n, p) be the semidirect product Lie group of the vector space K : = M((n,p),ℝ) of n × p real matrices and the Lie group L : = GL(n,ℝ) of n × n real invertible matrices. Moreover, we denote by g(n, p) the Lie algebra of G(n, p) whose the dual vector space is g*(p, n). In this paper, we study the projection of a coadjoint orbit of G(n, p) from g*(p, n) to K*. The main purpose is to give necessary and sufficient conditions for the openness of a coadjoint orbit projection. In this research, we applied the study literature method by studying the openness of a coadjoint orbits. As the main result, we proved the openness condition for coadjoint orbits projections in K*. For the future research, the openness of coadjoint orbits of G(n, p) still needs to be investigated more.
Structural equation modelling on Latent Variables to identify farmers satisfaction in East Java using Mixed-Scale Data
Authors: Fernandes A A R , Solimun  , Cahyoningtyas R A 
Published: May 2021

Abstract
Structural Equation Modeling (SEM) which is able to predict structural models as well as measurement models simultaneously and be able to accommodate the form of reciprocal relationships. This research is to develop structural modeling with metric and nonmetric measurement scales. In addition, this study aims also to identify satisfaction of farmer in East Java. The variables used were demographic variables, gratitude variable, and satisfaction farmer. The data used are primary data with respondents who are Farmer in East Java using proportional area random sampling. Measurement method used is the main component score method and the factor analysis. The number of respondents in this study were 155 districts in East Java Province. The results is a significant positive effect between the gratitude variables on the farmer satisfaction variable. That is, the more gratitude felt by farmers, the satisfaction will be increased by East Java Farmers. On the other hand, the test results showed that demographic variables did not significantly influence gratitude variables. The coefficient of total determination (R2) is 0.8714, meaning that the diversity of data (farmer satisfaction) that can be explained by the model in the first order analysis is 87.1% while the remaining 12.9% is explained by other variables not contained in the model.
Optimization of tax revenue in East Java: an empirical analysis of Spatial Durbin Error Model
Authors: Afifah D L , Rahardjo S , Kusumasari V , Atikah N , Kholifia N 
Published: May 2021

Abstract
Data containing spatial effects should be analyzed using a spatial model. One of the spatial models is Spatial Durbin Error Model (SDEM). In the SDEM model, the independent variable and error both contain spatial effects. Along with the implementation of regional autonomy, each region is given the freedom to regulate financing. Each area tries to explore their respective potential to get a large Regional Original Income. Taxes are an essential source of the regional revenue so that local governments try to optimize tax revenue. This paper empirically examines the factors that can maximize tax revenue in East Java and maps the potential areas to generate high taxes. Some of the factors considered include Gross Regional Domestic Product (GRDP), population, per capita income, number of industries. By using the SDEM model, it can be seen that there is a spatial relationship, where the amount of tax revenue in each region is different and is influenced by other areas.
Modelling Spatial Spillovers of regional economic growth in East Java: an empirical analysis based on Spatial Durbin Model
Authors: Atikah N , Rahardjo S , Afifah D L , Kholifia N 
Published: May 2021

Abstract
Spatial Durbin Model (SDM) is the development of the spatial autoregressive model (SAR). In the SDM model, the dependent variable and the independent variable both contain spatial effects. Spillover occurs when changes in one area cause changes in another. The spillover effect needs to be considered because it can affect the model. This study’s main objective is to estimate the effect of spillover on the economic growth of districts/cities in East Java. Per capita income can be an indicator of regional economic growth, which has a spatial effect. The variables estimated to affect economic growth include total population, number of industries, and labor force. Data analysis in this study using R software. Researchers found a positive spatial spillover of population, number of industries, and labor force on economic growth in East Java.
Unsteady magnetohydrodynamics nano fluid flows past a cut magnetic solid sphere when the mix convection included
Authors: Widodo B 
Published: May 2021

Abstract
The system of engine in a car is one of the magnetohydrodynamic (MHD) implementations. This system applies the basic concept of MHD, which is fluid motion that can conduct electric current because of a magnetic field. Several researchers therefore commenced to develop these ideas by observing the characteristics of the numerical simulation solutions. Because of the significance of this research, we are interested in assessing the effect of forced convection on MHD fluid flow, especially nano-fluids, when passing over a magnetic object. We therefore consider the MHD analysis of nano-fluids through sliced magnetic spheres that are induced by mixed convection problem using a mathematical model. This mathematical model is developed from the continuity equation, the momentum equation and the energy equation. The model is then elucidated numerically by means of the finite difference method with the Keller-Box scheme and MATLAB software. Furthermore, within numerical simulations investigated the effects of magnetic parameters (M), slice angle parameters (θs), and volume fraction of nano-fluid (X) towards fluid velocity and temperature. The numerical solutions express that when the magnetic parameter (M) rises, the velocity of the nano-fluid drops and the temperature of the nanofluid growths. When the cut angle parameter (θs) enlarges, the velocity of the nano-fluid enhances and the temperature of the nano-fluid lessens. When the volume fraction of nanofluid (X) expansions, the velocity of the nano-fluid falls and the temperature of the nanofluid rises.
Rheological model of the fine particles viscoplastic suspension
Authors: Kolodezhnov V N 
Published: May 2021

Abstract
The analysis of the mechanical behaviour of some types of fine particles suspensions is carried out. A rheological model is proposed to describe the shear stress and shear rate dependence, taking into account the appropriate conditions imposed on the model parameters. It is shown that such model can take into account the “solidification” effect manifestation. A variation of generalization of the rheological model for two- and three-dimensional hydrodynamics problems of fine particles suspensions is proposed, and some methodological features for solving such problems are considered.
Rod system destruction in the elastoplastic formulation of the problem
Authors: Kopteltseva O U , Markin A A 
Published: May 2021

Abstract
A statically indeterminate system consisting of rods which are prescribed in the initial state by unit vectors is considered. The basic equations of balance and equilibrium are presented in dimensionless form until the critical deformation in the elastic and elastoplastic domain in the rods is reached. The given basic equations allow taking into account the additional loading or unloading of the rod system at the point of reaching critical deformation in the elastoplastic domain. The process of loading the system in the case of simple loading is shown and the process of deformation of a specific rod system is described.
Study of quasi-static behavior of a system with partially distributed parameters under combined loading
Authors: Minayeva N V , Gridnev S Y , Skalko Y I , Alexandrova E E 
Published: May 2021

Abstract
The problem of the existence of a quasi-static process described by the solution of a system of differential equations is considered. The possibility of quasi-static deformation of a cantilever bar, at the end of which there is a concentrated mass exceeding the mass of the bar has been studied. The bar is loaded with tracing and horizontal forces. A condition has been obtained under which the bending of a bar can be studied on the basis of the solution of the static problem used in the theory of small vibrations.
Extracting fracture mechanics parameters (higher-order coefficients of Williams series expansion) from FEM analysis and digital photoelasticity method
Authors: Mironov A , Petrova D , Bakhareva Y , Stepanova L 
Published: May 2021

Abstract
The paper describes new algorithms and procedures proposed for determining fracture mechanics parameters from finite element analysis using the over deterministic method. The multi-parameter crack tip stress field description is used. The algorithms and procedures based on multi-parameter stress field representations in series form are shown to be a powerful tool for reliable and accurate parameter determination. The technique is aimed at the determination of coefficients of the Williams series expansion from finite element analysis and is based on the over deterministic approach. The methodology is illustrated and applied to several cases of cracked specimens. Examples are presented for crack-tip fields recorded using digital photoelasticity. The results of finite element analysis are compared with the digital photoelasticity experiments. The results are in good agreement. The principal stresses obtained from finite element method are in good agreement with the isochromatic fringe patterns obtained by the photoelasticity method. Explanation has been made for giving guidance to a user on how best to approach implementation of the method from a practical standpoint.
Data mining system for predicting quality of polymeric films
Authors: Chistyakova T B , Teterin M A 
Published: May 2021

Abstract
A computer data mining system for predicting the quality of polymer films in international, large-scale and multi-assortment industries is described. This article presents a library of statistical and data mining methods that allows, using statistical tests, to test data for distribution normality, predict the quality of polymer film materials for various line configurations and different types of film and includes the following methods: recurrent neural networks, neural network with long short-term memory and convolutional neural network. Analysis of methods of predicting the quality of polymer films was carried out and an algorithm was developed that allows selecting the most appropriate method for predicting the quality of polymer films based on the type of film, line configuration and requirements for film quality. The system includes interfaces that display trends in the process characteristics of the process class. The system was tested using the example of industrial data of the corporation on production of polymer film in plants of Russia and Germany.
Approximated solution algorithms for Urysohn-type equations
Authors: Belozub V , Kozlova M , Lukianenko V 
Published: May 2021

Abstract
Problems of remote sensing and gravity, magnetic, seismic, geological prospecting use systems of indirect data measurement, which can be modeled with non-linear Urysohn equations. The paper presents equations of Urysohn type and their operator analogues. A number of algorithms for their solution has been developed based on the availability of a priori information, asymptotic properties of integral operators, and specific features of a model. It has been formulated a theorem on constructing a solution of the original equation based on the neighboring one with an error estimate. Both the original and neighboring equations are taken as the regularized equations. The proposed approach allows for a variety of algorithms, depending on the type of regularization and iteration schemes, in particular, a modified version of the Levenberg-Marquardt algorithm. Additionally, the algorithm for searching characteristic points of a given function based on the asymptotics of an integral Urysohn operator is provided.
On flows in networks with reachability restrictions
Authors: Erusalimskiy I M , Skorokhodov V A 
Published: May 2021

Abstract
This paper we consider graphs with reachability restrictions of three types: barrier, valve and magnetic. As a part of the maximum flow problem in networks with considered restrictions, simple examples are given. These examples demonstrate a significant difference between flows in networks with reachability restrictions and flows in the same networks without any reachability restrictions. In each case under consideration there is a decrease of the maximum flow value. Wherein for magnetic reachability it is shown the possibility to control the network flow, whereas for barrier and valve reachability it is shown the reducing of the maximum flow due to the effect of superimposing of flow to itself, which is never observed in the classical theory of flows in networks.
Influence of information integrity control of the unified model of the automated information system of commercial enterprises on conditional profit
Authors: Gubin E A , Dubrovin A S , Irkhin V P , Golovkin R B , Gudkov M A 
Published: May 2021

Abstract
Unified model of the automated information data system (AIS) at the commercial enterprises (UMAIS CE) as a protected AIS for the provision of the commercial activity of the enterprises with the common structure and configuration of equipment is examined in the article. Information integrity control (IIC) is an integral part of this model, and its functioning has an impact on the contingent profit of the commercial enterprise considered in the frameworks of UMAIS CE. Mathematical model of IIC UMAIS CE presented within this context, just as a number of computing experiment that allow determining of a strategy of the effective usage of IIC UMAIS CE and specified ways for increase of the contingent profit at the commercial enterprise.
Adaptive running training complex for the training and rehabilitation of users
Authors: Karpushkin S V , Siuhin A A , Kalach A V 
Published: May 2021

Abstract
The problems of development of the treadmill training simulator for the industrial, medical and sporting organizations are considered in the work. This simulator should provide minimum hardware-software delay for the system of automatic control. Block-diagram of the system is proposed where the main control and program blocks are allocated. Main limitations of the current hardware-software were revealed and some methods for minimization of their effects are proposed including historical data for the formation of behavioral patterns of a user.
On the possibility of the Fourier method using for finding of a solution of the sixth-order mathematical model with derivatives with respect to measure
Authors: Shabrov Sergey , Ilina Ol’ga , Shabrova Marina 
Published: May 2021

Abstract
In the present paper the separation variables method is applied to finding an exact solution of the sixth-order mathematical model with nonsmooth solutions. Analyzing arising difficulties, in particular the spectral problem, we use a pointwise method of interpretation of solutions proposed by Yu.V. Pokornyi. This method showed its effectiveness in constructing of an exact parallel to the classical theory of differential equations, including oscillation theorems, both second and fourth orders.
Oscillogram processing algorithm when monitoring cardiac patients’ conditions
Authors: Abramov G V , Abramov D G , Polovinkin I P 
Published: May 2021

Abstract
The development of hospital information system requires the improvement of diagnostic and monitoring tools. The tools should provide extensive diagnostics and automatic data processing. In that respect volumetric compression oscillometry is considered a promising technique. However, at present diagnostic findings need to be adjusted by qualified healthcare professionals. The article deals with a process model when measuring arterial blood pressure, compares experimental findings and presents a blood pressure measurement algorithm. The devices designed on the algorithm will allow to conduct an advanced monitoring of patients’ conditions without healthcare professionals directly involved. Implementing algorithm-based devices into hospital system will allow to respond to change in patients’ conditions urgently.