bluuebunny/crossref_metadata_2025_split huggingface dataset:
Seldinger-Technik
Authors: Hartmann Karsten 
Published: November 2019

ZusammenfassungDie endovenöse Venenpunktion mittels Punktionskanüle unter Ultraschalldiagnostik ist einer der wichtigsten Schritte bei der endovenösen Operation, da der geübte Operateur damit jeden noch so ausgefallenen Befund der endovenösen Technik zugänglich machen kann. Eine Venenpunktion im Längsschnitt im Ultraschall hat dabei wesentliche Vorteile. Eine genaue Beschreibung und Bebilderung der Vorgehensweise bei der Punktion und der Seldinger-Technik wird dargelegt.
Patient-Reported Outcomes following Arthroscopic Triangular Fibrocartilage Complex Repair
Authors: Selles Caroline A. , d'Ailly Philip N. , Schep Niels W.L. 
Published: November 2019

Abstract
Background Triangular fibrocartilage complex (TFCC) injury is a common cause of ulnar-sided wrist pain, which may lead to serious physical impairments. Arthroscopic repair has benefits such as less soft tissue damage, greater surgical accuracy, and may lead to faster recovery than open repair.
Objective The purpose of this study was to determine the functional outcome of patients with symptomatic TFCC injuries treated with arthroscopic debridement or repair.
Patients and Methods A retrospective study of all consecutive patients with a TFCC injury treated arthroscopically was conducted. The primary outcome was the patient-rated wrist evaluation (PRWE) score. Secondary outcomes were, pain, operative findings, complications, and additional treatment.
Results A total of 51 patients with a median follow-up of 16.5 months (interquartile range [IQR]: 13–25) were included. Injuries were treated with TFCC debridement (n = 25), TFCC ligament to capsule suturing (n = 10), TFCC debridement and ligament to capsule suturing (n = 7), TFCC debridement and synovectomy (n = 5), and TFCC foveal reinsertion with a suture anchor (n = 4). The median PRWE was 19.5 (IQR: 6–49). Complications occurred in three patients and in nine patients additional surgery was performed.
Conclusion Arthroscopic treatment of TFCC lesions leads to satisfactory functional outcomes.
Level of Evidence This is a Level IV study.
Does Anticoagulation Improve Flap Outcomes in Hypercoagulable Patients? A Systematic Review
Authors: Kotamarti Vasanth S. , Shiah Eric , Rezak Kristen M. , Patel Ashit , Ricci Joseph A. 
Published: November 2019

Abstract
Background Despite improvements in microsurgical techniques, hypercoagulable patients remain a reconstructive challenge. Thrombophilias are a relatively common problem with potentially catastrophic results including free flap loss. The aim of this study was to assess the available literature on free tissue transfer in patients with known hypercoagulability to develop recommendations for management.
Methods A systematic review of the PubMed, EBSCO, and Cochrane databases was performed in June 2018. Inclusion criteria were assessment of outcomes of free tissue transfer in patients with established hypercoagulability. Exclusion criteria were review articles, case reports, and studies lacking detailed discussion of anticoagulation regimens and surgical outcomes. Data collected included the number of hypercoagulable patients, anticoagulation regimens, thrombotic complications, flap success, and bleeding complications. Statistical analysis was performed using independent samples t-tests.
Results Of 147 total results, four articles were included for analysis. One relevant article published after search completion was included. In total, 185 free tissue transfers were performed in 155 thrombophilic patients. Anticoagulation regimens varied widely but often included intraoperative continuous heparin, with or without additional bolus, followed by postoperative and outpatient anticoagulation. Hypercoagulable patients often developed late postoperative thromboses. Of the intraoperative thromboses, 36.4% were successfully salvaged. No flaps with postoperative thrombosis were salvaged. Preemptive therapeutic anticoagulation improved outcomes but increased the bleeding risk.
Conclusion Free tissue transfer may be successful in hypercoagulable patients. High-risk patients identified preoperatively should receive therapeutic anticoagulation initiated intraoperatively unless contraindicated. Salvage after postoperative thrombosis is poor. Ultimately, the benefits of free tissue transfer must be considered with the potential morbidity of bleeding complications on a case-by-case basis when developing a reconstructive plan. Initiating anticoagulation based on the presence of intraoperative risk factors may prevent unnecessary intervention.
Parliamentary impoliteness and the interpreter’s gender
Authors: Bartłomiejczyk Magdalena 
Published: November 2019

AbstractImpoliteness is a common phenomenon across various democratically elected parliaments. However, in multilingual legislative bodies such as the European Parliament speakers have to rely on interpreters to transfer pragmatic meaning, including face-threatening acts and impoliteness. The existing research in the field of Interpreting Studies offers much evidence of the filtering effect that interpreting may have on impoliteness, through facework strategies introduced by interpreters. The main question here is whether female interpreters tend to mitigate grave, intentional impoliteness to a greater degree than male interpreters. My analysis of a large corpus composed of English-Polish interpretations of speeches by Eurosceptic MEPs shows that mitigation of impoliteness by interpreters is a widespread phenomenon. The illocutionary force of original statements is often modified by means of diverse interpreting strategies. However, the quantitative analysis of interpreter facework does not reveal a statistically significant gender-based difference in the distribution of approaches towards impoliteness.
Long-haul few mode fiber optic link with differential mode delay compensation
Authors: Burdin V A , Eremchuk E Y 
Published: November 2019

Abstract
This paper present results of simulation of the few mode fiber optic link with the differential mode delay compensation. There were considered some variants of compensation of differential mode delay including differential mode delay compensation together chromatic dispersion compensation on line optical amplifiers and differential mode dispersion compensation on more density maps.
Calculation of the vortex eigenfunctions of the finite propagation operator in the near-field diffraction
Authors: Kirilenko M S , Volotovskiy S G 
Published: November 2019

Abstract
The propagation of vortex laser beams in the near diffraction (at a distance in the order of the wavelength) can be described by means of an expansion in plane waves, which after considering vortices reduces to an vortex propagation operator involving Fourier-Hankel transforms. The eigenfunctions of the operator, when eigenvalues are close to one, determine the characteristics of the signals (information) transmitted lossless (without distortion). The beam propagation distance, vortex order and the region of spatial frequency limitation are parameters of the operator and they essentially change the set of eigenvalues and functions. We calculate the vortex eigenfunctions of the finite propagation operator in the near diffraction zone and investigate their qualitative and quantitative characteristics depending on the propagation distance, the order of vortex and the constraints imposed in the object and spectral domains.
Simulation of fiber optic sensors of electrical quantities based on Bragg gratings with instrumental errors correction
Authors: Zakharov V N , Leonovich G I , Krutov A F , Lobakh A E 
Published: November 2019

Abstract
The principle and an example of simulating a network high-sensitivity sensor of electrical quantities based on fiber Bragg gratings interlinked with a sensor-actuator structure, and a method for instrumental errors correction are described.
Bessel beam converter based on c-cut lithium niobate crystal
Authors: Karpeev S V , Paranin V D 
Published: November 2019

Abstract
The transformation of the 0th order Bessel beam into the 2nd order Bessel vortex beam is experimentally investigated. A c-cut lithium niobate crystal with a thickness of 514μm was used to convert the beams. It is shown that for a diffractive axicon with a period of 3.5μm illuminated by semiconductor laser (λ=639 nm), the output beam is a 2nd order Bessel vortex beam. It is shown that for a diffractive axicon with a period of 4μm illuminated by heliumneon laser (λ=632.8 nm), the output beam is a superposition of Bessel beams of the 0th and 2nd orders. The experimental results are in good accordance with mathematical modeling.
Combined technique based on light scattering for investigation of the colloid’s parameters
Authors: Savchenko E A , Nepomnyashchaya E K 
Published: November 2019

Abstract
The determination of colloid’s parameters is important issue in different fields of science and industry. The purpose of this work is investigation of the physical and dynamical parameters of colloid’s parameters. This paper offers new experimental setup of combined method based on light scattering techniques (dynamic light scattering and electrophoretic light scattering). Distinctive features of these methods are simplicity, informativeness, non-destructiveness and high accuracy of obtained results. Light scattering techniques are based on the correlation function of fluctuations of the intensity of scattered light calculation. The analysis of correlation function allows one to obtain the size distribution, translational diffusion coefficients and the molecular weight of biomolecules. In addition when an electric field is applied, we can determine electrophoretic mobility, zeta potential and the degree of intermolecular interaction directly in the liquid. In this paper, results of different types of colloid’s parameters are presented. The obtained results can be used, for example, in medical application for investigation of aggregation processes of proteins with nanoparticles (gold, magnetic, carbon and others), which may be useful in the diagnosis and treatment of various diseases.
Formation of microstructures on the surface of a carbaseole-containing azopolymer by the action of laser beams
Authors: Podlipnov V V , Ivliev N A , Khonina S N , Nesterenko D V , Meshalkin A Yu , Achimova E A 
Published: November 2019

Abstract
The formation of microstructures on the surface of a carbazole azopolymer occurred with a Gaussian beam of a linearly polarized laser with wavelengths of 405, 485, and 532 nm. Power density was changing. Images of the formed microprotrusions and their parameters were obtained depending on the power density and wavelength. The effect of the wavelength and susceptibility of the azopolymer to laser radiation at various wavelengths is shown.
Application of the electrooptical method for the analysis of surface nanoroughness of raceways of instrument bearings
Authors: Abramov A D , Goryainov D S , Grishin R G , Nosov N V 
Published: November 2019

Abstract
The control of the microrelief of surfaces of small-size details is a relevant objective for the mechanical engineering. We consider the issue of control by reference surface fragment with the radius of curvature comparable to the size of the fragment. We offer an optical method that uses the binary images of the target and the reference surfaces to control the nanoroughness of raceways of instrument bearings. A quasi-optimal correlation algorithm is used to compare two surface images. The value of the autocorrelation function allows to evaluate whether the roughness of the ring raceway of the instrument bearing corresponds to the norm. The results of the tests of the developed method showed its statistical stability. This allows us to use the method in serial production conditions. The results of nanoroughness analysis of surface with the roughness up to 0.02 microns after grinding with abrasive circles are provided.
Radiation model for spectral channels of Sentinel-2A and Landsat 8 radiometers
Authors: Firsov K M , Razmolov A A , Klitochenko I I 
Published: November 2019

Abstract
A description of a radiation model used for calculations of radiation transfer in a cloudless and cloudy atmosphere of the Earth is given. To parameterize functions of atmospheric transmission due to molecular absorption, exponential series are applied, with parameters determined on the basis of line-by-line calculations using modern spectroscopic databases. For effective parametrization, a simple and accurate method of taking into account the spectral dependence of the response function of recording devices has been developed. Examples are given for sensors installed on Sentinel-2A and Landsat 8 satellites.
Using probabilistic statistics to determine the parameters of doubly stochastic models based on autoregression with multiple roots
Authors: Vasiliev K K , Dementyiev V E , Andriyanov N A 
Published: November 2019

Abstract
An important task when describing images using mathematical models is the identification of parameters from an real image. Such a task is of particular difficulty for combined mathematical models, which, among other things, make it possible to describe multidimensional spatially inhomogeneous signals. An example of such a model is a doubly stochastic model based on autoregression with multiple roots of characteristic equations, which has an important property of quasi-isotropy and allows describing a smooth change in the statistical and correlation properties of simulated images. This work is aimed at developing algorithms for identifying the parameters of this model based on the estimated probabilistic properties of the available image.
Target identification for photon-counting image sensors, inspired by mechanisms of human visual perception
Authors: Antsiperov V E 
Published: November 2019

Abstract
Paper presents the new objects identification/recognition method, designed for modern image sensors. One of the main features of the method proposed is that it is initially focused on presenting the input data as a discrete set of photocounts of image sensors. The developing of the method was based on the machine learning approaches, so the synthesized identification algorithms are principally focused on the modern embedded computations. The results of numerical simulation are given at the end of the paper.
The problem of quality assessing for the methods of coherence maps calculation in InSAR remote sensing of the Earth data processing
Authors: Sosnovsky A V , Kobernichenko V G , Vinogradova N S 
Published: November 2019

Abstract
Interferometric coherence is an important indicator of the quality of interferograms obtained by synthetic aperture interferometric radars (InSAR), because the areas with low coherence are not suitable for interferometric data processing. The coherence value is used as a parameter for adaptive phase noise suppression algorithms. It can also be used for surface classification tasks. The paper investigates the problem of the coherence estimate reducing under the influence of the topographic phase slope and considers ways to reduce the impact of the slope on the estimate value. The paper presents a comparative efficiency analysis of four methods for coherence maps calculation used for the phase noise suppression on the interferograms by a spectral adaptive filter in interferometric data processing for the Earth’s remote sensing space radar ALOS PALSAR
Method of classification of technogenic objects on the basis of construction of multilayer thermal tomograms
Authors: Ischuk I N , Dolgov A A 
Published: November 2019

Abstract
The article deals with the problem of classification of man-made objects on the background of the earth’s surface, under the conditions of natural heat exchange with the environment based on the construction of multilayer thermal tomograms. The results of experimental testing of the proposed method of classification are presented.
Asymptotic expansions of solutions in the model of virus dynamics with immune response
Authors: Archibasov A 
Published: November 2019

Abstract
This paper deals with the model of virus dynamics with immune response. Consisting of three integro–differential equations with partial derivatives with two small parameters the singularly perturbed system describes the model. By Vasil’eva – Tikhonov boundary function method, asymptotic expansions of the solutions of the initial boundary value problem are constructed.
Reduction of the optimal control problem for a magnetoelectric power drive
Authors: Vidilina O , Voropaeva N 
Published: November 2019

Abstract
A linear-quadratic optimal control problem is considered for a singularly perturbed differential system, which describes the dynamics of a magnetoelectric. The optimal control law is constructed as feedback. Using the method of integral manifolds allows us to reduce the order of the matrix differential Riccati equation.
Optimization algorithms for the conditions of complex catalytic reactions
Authors: Koledina K F , Koledin S N 
Published: November 2019

Abstract
A procedure was developed for the investigation of complex catalytic reactions using optimization algorithms. The first stage is a solution of the inverse problem of chemical kinetics involving the recovery of unknown parameters by single-objective optimization algorithms. In the second stage, based on the kinetic model, we solved the problem of determining the optimal conditions for the reaction resorting to multi-objective optimization algorithms. Parallelization models of computing for solving the multi-objective optimization problem are considered.
Mathematical modeling of radical-chain reaction of isopropylbenzene oxidation
Authors: Vovdenko M K , Ahmerov E A , Koledina K F , Vovdenko A G 
Published: November 2019

Abstract
Isopropylbenzene (IPB) oxidation by air oxygen is an intermediate stage of phenol and acetone production process. Hydroperoxide of isopropylbenzene (HP IPB) is a target product of this process. In this article reaction scheme of isopropylbenzene oxidation was proposed and kinetic model based on reaction scheme developed . Also it was important to choose approach for mathematical simulation of chemical reaction. In this work system of differential equations was used for oxidation reaction simulation. Different types of numerical methods were used for model solution. The results we obtained were compared with data from other researches.
Fatigue life estimation of hydraulically actuated mobile working machines using Internet of Things and Digital Twin concepts
Authors: Zhidchenko V V , Handroos H , Kovartsev A N 
Published: November 2019

Abstract
The method and its implementation are proposed that allow estimating the fatigue life of mechanical structure of hydraulically actuated mobile working machines. The method does not use stress or strain gauges and relies just on the data about the pressure and position of hydraulic cylinders actuating the machine components. These data are measured in real-time during the machine operation and are transmitted via the internet for the processing in the cloud. The simulation model of the machine (Digital Twin) is used for the simulation of machine dynamics on the basis of received data. The Digital twin provides input for the finite-element analysis of machine’s components in order to calculate the stress history of each component. The results of these calculations are used for fatigue life estimation of each component. Applicability of the method is tested by comparing its results with the similar simulation verified by experimental measurements.
Dynamic identification of boundary conditions for convection-diffusion transport model subject to noisy measurements
Authors: Tsyganov A V , Tsyganova Yu V , Kuvshinova A N 
Published: November 2019

Abstract
The paper addresses the problem of dynamic identification of boundary conditions for one-dimensional convection-diffusion transport model based on noisy measurements of the function of interest. Using finite difference method the original model with the partial differential equation is replaced with the discrete linear dynamic system model with noisy multisensor measurements in which boundary conditions are included as the unknown input vector. To solve the problem, the algorithm of simultaneous the state and input vector estimation is used. The results of numerical experiments are presented which confirm the practical applicability of the proposed approach.
A new algorithm used the Chebyshev pseudospectral method to solve the nonlinear second-order Lienard differential equations
Authors: Nhat L A , Lovetskiy K P , Kulyabov D S 
Published: November 2019

Abstract
This article presents a numerical method to determine the approximate solutions of the Lienard equations. It is assumed that the second-order nonlinear Linard differential equations on the range [-1, 1] with the given boundary values. We have to build a new algorithm to find approximate solutions to this problem. This algorithm based on the pseudospectral method using the Chebyshev differentiation matrix (CPM). In this paper, we used the Mathematica version 10.4 to represent the algorithm, numerical results and graphics. In the numerical results, we made a comparison between the CPMs numerical results and the Mathematica’s numerical results. The biggest odds were very small. Therefore, they will be able to be applied to other nonlinear systems such as the Rayleigh equations and Emden-fowler equations.
Molecular Dynamics Modeling of Crack Propagation
Authors: Stepanova L V , Bronnikov S A 
Published: November 2019

Abstract
The study is focused on the application of different approaches for initial crack propagation angle determination. Copper plate with the central crack under complex mechanical stresses (Mode I and Mode II loading) is studied by extensive molecular dynamics simulations using EAM potential. In addition, the complete Williams expansion for the crack tip fields containing higher-order terms is used. Crack propagation angle is obtained by 1) multi-parameter fracture mechanics approach based on three fracture mechanics criteria, MTS, maximum tangential strain and SED; 2) atomistic modeling for mixed-mode loading of plane medium with the central crack. From our simulations we can derive crack propagation directions and crack angles. MD calculations were run for three different values of the mixity parameter: 0.4, 0.5 and 0.6. Calculated values of crack angles were -51:5 deg, -46:6 deg and -42:2 deg accordingly. All the fracture criteria tested give similar values of crack growth angle for different values of the mixity parameter. It is shown that initial crack propagation angles given by both approaches are very close, especially when higher order terms of Williams series expansion for stress/displacement field description are taken into account. Thus, one can conclude that the criteria of classical continuum mechanics MTS and SED can give satisfactory predictions for crack initiation direction. Crack propagation direction angles given by conventional fracture mechanics reasonably agree with the angles obtained from molecular dynamics simulations.
Decentralized multisensor estimation of motion parameters of an object moving along a complex trajectory
Authors: Golubkov A V , Tsyganov A V , Tsyganova Yu V , Petrishchev I O 
Published: November 2019

Abstract
The paper addresses the problem of multisensor estimation of the motion parameters of an object moving along a complex trajectory which consists of parts of the uniform linear and circular motion subject to noisy measurements. To solve the problem, we describe the object motion as a set of linear stochastic models responsible for different parts of the trajectory and use a decentralized multisensor algorithm for estimating the object state vector based on the information form of the Kalman filter. The results of numerical experiments confirm the applicability of the proposed approach.