bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical study of the water discharge on a fish stepped passage at a low head dam
Authors: Bratanovici Cristian , Popescu-Busan Ioana - Alina , Lazar Gheorghe , Constantin Albert Titus , Nicoara Serban-Vlad 
Published: November 2019

Abstract
Whereby the water course is considered a continuous system with hydrological connectivity – longitudinal, lateral, vertical – and variable in time, the design and implementation of barraging steps on water courses will have to follow the river dynamics and to respect the ecological concepts. Looking to diminish the negative impact on the environment, the promoted technical solution needs to consider a series of principles and criteria specific to the river basin for the conservation of nature and biodiversity. A specific river development assuming the accomplishment of a low head overflowing step ending with a water energy dissipater will have to be additionally endowed, according to nowadays legislation, with a corresponding fishway structure preserving the natural passing. The paper presents a numerical simulation of the water discharge transported by the fish stepped passage associated to the low head overflowing Livezeni Dam on Jiu River in Hunedoara County, Romania, considering the possible accidental high waters phenomenon given as a synthetic levels’ hydrograph. The hydraulic model looks to analyse the maximum discharges for the special structure and also to estimate the maximum values for water velocity in the strangled cross sections. As a consequent, the adjustment of the steps geometry or number can be studied in order to fulfil the nowadays regulation on the subject.
Analyzes of brown coal in connection with higher sulfur contents in Sokolovská uhelná
Authors: Duraj Milos , Augustin Marek , Niemiec Dominik , Yang Shuran , Kubac Jan , Matuszkova Barbara , Sombathy Erik , Montero Orlando Arencibia , Yilmaz Isik , Marschalko Marian 
Published: November 2019

Abstract
The field of energy raw materials, including caustobioliths, still plays a priority role in the raw materials policy of many states. One of the important areas in which these reserves are currently mined is the Sokolov Basin in the Czech Republic. The current question on this deposit is the increased sulfur content in some locations of the Antonín seam.
Investigation of Properties of Mortars Containing Waste Stone Powder Instead of Sand Under Freezing-Thawing Effect
Authors: Aral İbrahim Feda , Cihan Mehmet Timur 
Published: November 2019

Abstract
Nowadays, sustainable production is vitally important in consideration of limited raw materials and an environmental welfare. Sustainable production encourages the use of several industrial wastes as raw materials in different fields. Water and aggregate are among the most consumed items on the earth. Waste powders, with a size of 75 μm or less, formed during the aggregate production process affect both the environment and human health negatively. For sustainable aggregate production, it is important that the waste powder generated during the aggregate production phase is used in the concrete industry. Limestone, basalt and dolomite are commonly used as concrete aggregate. In this study, limestone, basalt and dolomite waste powders were replaced with fine aggregate (sand). Reference samples (0 %) and 20%-30% waste stone powder produced by replacing standard sand with mortar. The freeze-thaw effect (40 cycles) on compressive strength, flexural strength, ultrasonic pulse velocity, weight loss are analysed. For this purpose, a total of 105 (21×5) 40×40×160 mm prism samples were produced. Under the influence of freeze-thaw cycles, the loss of weight in samples produced by replacement of standard sand and waste stone powders is less than that of the reference samples. The ultrasonic pulse velocity tend to increase in general as the number of freeze-thaw cycles increases. The flexural strength rises as the replacement rate is increased, and after the freeze-thaw cycle, a slight decline is observed. The compressive strength values decrease as the replacement rate is increased. It decreases at the end of the 10th freeze-thaw cycle but the variability tend decrease at extending cycles (20-40).
Leachate Treatment Plants Used Inside Compliant Landfills, Solutions to Comply with Technical Environmental Protection Standards
Authors: Ioana-Alina Cretan 
Published: November 2019

Abstract
The purpose of this paper is to present solutions chosen for the treatment of leachate resulting from the storage of non-hazardous solid wastes, from a landfill site. The technical characteristics of the installations dealing with the leachate of the compliant landfills must be designed so that the characteristics of the effluent correspond to the limits of pollutant loading of industrial and urban waste water into the discharge into the treatment plants or natural receptacles. From a technical point of view, water management solutions at the complaint landfill site provide a distinct separation of the rainwater from the site and the compliant landfill leachate resulting from wastes moisture content and rainwater that percolates the waste cell in operation. The sewage treatment plants aim to treat the leachate from the body of the landfill and do not interfere in the water balance in the related service area inside the landfill location.
Editorial Preface
Authors: Vatin Nikolai I. , Galishnikova Vera V. , Pahl Peter J. , Kharun Makhmud 
Published: November 2019

The International Scientific and Practical Conference Engineering Systems (ISPCES) held annually at the Peoples’ Friendship University of Russia (RUDN University), has created a platform for summarizing research in various areas of engineering. The aim of the conference is to foster and conduct collaborative interdisciplinary research amongst the researchers, professionals and industrialists to share their research experiences and indulge in interactive discussions and special sessions at the event.
The present proceedings include a selection of papers submitted to the International Scientific and Practical Conference Engineering Systems - 2019 (ISPCES 2019), which took place during 4-5 April 2019 in the RUDN University, Moscow, Russia. The conference proceedings present recent advances in the field of fundamental science, engineering research and materials science. We hope that this collection will be useful for many specialists and researchers from the mentioned areas.
We would like to thank everyone who was part of this conference and look forward to seeing everyone again next year at ISPCES 2020 dedicated to the 60th anniversary of RUDN University.
Radon risk reduction to population
Authors: Vysotskii S P , Levchenko L G 
Published: November 2019

Abstract
Ranking the risks of deaths from various factors affecting the human body shows the leading effect of radon. The main source of radon entry into the dwelling is the soil under the building. Health risks analysis was performed at various levels of radon concentrations. Based on analyses of radon exposure data made in the USA, analytical dependencies of health risks are derived depending on the radon concentration. Analysed the path of penetration of radon in the home. The cost of the work to protect the home from radon penetration has been estimated. Analysis of the appearance of oncological diseases of the respiratory organs for residents of the region according to statistical data depends on the number of floors. The approach to the choice of the level of protection from radon exposure according to the ALARA principle – to ensure the most reasonable achievable level of radon concentration is substantiated. The analysis of the protective properties of various building materials is performed.
Analysis of the theory of calculation of fiber-reinforced concrete with non-steel fibers
Authors: Markovich A S , Koroteev D D , Abu Mahadi M I , Miloserdova D A 
Published: November 2019

Abstract
The fiber-reinforced concrete finds more applications in modern construction. This material has improved strength and deformation characteristics. The fiber-reinforced concrete is considered to be one of the most promising building materials in the world practice. The experience of using this material in developed countries, such as the USA, UK, Japan, Germany, Italy, France, Australia, has shown the good technical and economic indicators in building constructions. Recently, the base of standards for preparation, calculation and design of such concretes has been prepared and introduced in Russia. The method of determination of the class of the fiber-reinforced concrete by residual tensile strength, the calculation of the strength of standard sections, the diagrams of the deformation is discussed in the article based on the new Code of Practice. The obtained results of analysis of the theory of calculation suggest further studies of the properties and physical characteristics.
Methodology for calculating the stress-strain state of robotic system made of composite materials
Authors: Khayrnasov K Z 
Published: November 2019

Abstract
The methodology for calculating the stress-strain state of robotic systems made of composite material under dynamic load is considered. The problem is solved by the finite element method. Formulas for determining the reduced stiffness of a multilayer composite material are given depending on the location of the base of the composite in layers, as well as in three-layer structures consisting of external bearing layers and a layer of aggregate between them. The method of placing the base layers of a composite material in the structure under study along the lines of maximum stress is considered. Particular attention is paid to the accounting of gearboxes, gears and support bearings in robotic systems. The results obtained in relation to the multi-stage dynamic stand, made of composite material.
Comparison of n-LSB embedding approach in different color spaces
Authors: Cataltas Ozcan , Tutuncu Kemal 
Published: November 2019

Abstract
Today, secure communication is one of the biggest goals that people want to achieve. There are many different methods to ensure security in data communication. Steganography is one of the methods that can be used in secure data communication. In this study, n-LSB embedding method based on reducing the amount of distortion generated by the classical Least Significant Bit substitution method that we introduced in another study has been applied in both RGB color space and HSI, XYZ and YCbCr color spaces. In the embedding process, 3 message bits were embedded in each color channel. 7.94 kb data is embedded on 3 different cover images. The obtained results were compared with the PSNR criterion, which is the criterion of image quality evaluation, and it is seen that proposed n-LSB approach gives better results in HSI color space for 3 cover images. The highest PSNR value obtained was 83.907 dB.
Tree-seed algorithm in solving real-life optimization problems
Authors: Sahman M A , Cinar A C , Saritas I , Yasar A 
Published: November 2019

Abstract
Tree-seed algorithm (TSA) is a nature-inspired and population-based algorithm for solving continuous optimization problems. The tree-seed relationship is the main motivation of this algorithm. TSA has only two peculiar parameters which are the total number of trees in the stand (pop) and the controller of the seed production (search tendency). Although many problems have been solved in the literature by TSA which is the successful optimizer for low dimensional unconstrained continuous problems, real-life problems have not been addressed yet. In this study, six continuous unconstrained real-life optimization problems (gas transmission compressor design, optimal capacity of gas production facility, gear train design, frequency modulation sounds parameter identification, the spread spectrum radar polyphase code design with 10 decision variables, the spread spectrum radar polyphase code design with 20 decision variables) have been solved. It is seen that choosing the number of the population as 50 and the value of search tendency as 0.1 is appropriate according to experimental results for these problems.
Comparison of typical access networks with AMOOFDM based access networks
Authors: Yazbeck H A , Belyaev V V 
Published: November 2019

Abstract
Access networks are under constant development looking for customer’s satisfaction by enhancing the internet service speed and the cost of the service. Moreover, trying to serve as many residential units as possible by extending the distance reach of the access network to cover a part of a big city or to reach a rural area in a range up to 60 km. Nowaday’s networks still experience limitations in services, coverage area, and still pricey for average customers. However, a significant percentage of these networks still using the terrestrial radio wave telecommunications to distribute the service inside or between city blocks, while others use the fiber to the home (FTTH). In this article, we are comparing the performance of the currently operated access networks to the adaptively modulated optical orthogonal frequency multiplexing (AMOOFDM) based access networks, according to the bit-rate, and the distance reach of these networks; highlighting the advantages of the AMOOFDM system using some types of the semiconductor optical amplifier (SOA) as an intensity modulator.
Composite materials for Hi-Tech printed circuit boards
Authors: Medvedev A M 
Published: November 2019

Abstract
The development of printed circuit board technology is subject to the general trend of electronics development - an increase in functionality and performance. This requires printed circuit boards to increase the assembly density of electronic components and interconnections and reduction of constructive delays in transmission lines of information. In turn, this requires the use of base materials with good dimensional stability and reduced values of dielectric permittivity and dielectric losses. Operability of gigabit electronics largely depends on the state of the surface of the printed conductors, since at high frequencies it is affected by the skin effect. Producers of basic materials, trying to meet these requirements, remain in the field of composite materials, so as not to change the structure of the existing production, based on the use of basic technologies of printed circuit boards. This article is based on the presentation of the properties of new materials from the catalogs of the companies Panasonic, Hitachi (Japan) and Isola (Germany).
Effect of fixing the pass-through turning tool in the tool holder on the roughness and surface macro deviations during turning
Authors: Allenov D , Deinova K , Konoplev V , Korzin A 
Published: November 2019

Abstract
A study of the effect of the tool overhang length from the tool holder and cutting forces corresponding to different sizes of the removed layer on the formation of the quality of the surface layer of parts during turning is presented. Linear displacements arising in a stress-strain state and roughness parameters were used as estimated parameters. It is revealed that the quality of the surface layer improves with a decrease in vibration in the zone of contact between the workpiece and the tool.
Relationship between hardness and optical properties of diamond-like carbon coatings
Authors: Suasnavas C V , Makeev M O , Osipkov A S , Solano N B , Shupenev A E , Mikhalev P A 
Published: November 2019

Abstract
Correlation between hardness and optical properties of diamond-like carbon (DLC) coatings is considered. Various methods for the characterization of mechanical, chemical and optical properties of DLC coatings are used; however, some of these methods are destructive, and others are non-destructive. It was found that optical properties of DLC coatings are proportional to their hardness. The mathematical expression that allows to calculate the hardness of a DLC coating according to its refractive index is proposed. Therefore, it is possible to avoid the use of destructive methods (such as nano-indentation technique) to characterize DLC coatings.
Nonlinear deformation of a solid body on the basis of flow theory and realization of FEM in mixed formulation
Authors: Gureeva N A , Kiseleva R Z , Nikolaev A P 
Published: November 2019

Abstract
In the mixed formulation, an algorithm for the formation of a hexahedral finite element deformation matrix at the loading step to determine the stress-strain state of a solid body beyond the elastic limit based on the theory of plastic flow is developed in a curvilinear coordinate system. Stresses and displacements are taken as nodal unknowns. The approximation of the required values of the inner point of the finite element through the nodal unknowns was carried out by trilinear functions. To obtain the deformation matrix of the hexahedral finite element, a mixed functional on the equality of the real and possible works of external and internal forces with the replacement of the actual work of internal forces by the difference of the total and additional work of internal forces at the loading step is used.
Application of a triangular finite element with Lagrange correction factors in calculations of thin shells of ellipsoidal type
Authors: Klochkov Yu V , Nikolaev A P , Vakhnina O V , Sobolevskaya T A , Yu Klochkov M 
Published: November 2019

Abstract
The study of the stress-strain state of a thin shell of an ellipsoidal type was carried out. The finite element method was used as a research tool using the triangular fragment of the middle surface as the discretization element. The nodal variable parameters of the triangular element of discretization selected the components of the displacement vector, their first and second derivatives with respect to global curvilinear coordinates. Fifth-degree polynomials were used as polynomial functions. To improve the consistency of the triangular element of discretization on the boundaries of adjacent elements, the Lagrange correction factors in the nodes entered in the midpoints of the sides of the triangular element were additionally used as unknowns. The analysis of the results of the calculation of the thin shell of the ellipsoidal type showed high efficiency of using the modified triangular finite element.
Reliable change in cognition over 1 week in community-dwelling older adults: a validation and extension study
Authors: Hammers Dustin B , Suhrie Kayla R , Dixon Ava , Porter Sariah , Duff Kevin 
Published: November 2019

Abstract

Objective
Reliable change methods can aid neuropsychologists in understanding if performance differences over time represent clinically meaningful change or reflect benefit from practice. The current study sought to externally validate the previously published standardized regression-based (SRB) prediction equations developed by Duff for commonly administered cognitive measures.

Method
This study applied Duff’s SRB prediction equations to an independent sample of community-dwelling participants with amnestic mild cognitive impairment (MCI) assessed twice over a 1-week period. A comparison of MCI subgroups (e.g., single v. multi domain) on the amount of change observed over 1 week was also examined.

Results
Using pairwise t-tests, large and statistically significant improvements were observed on most measures across 1 week. However, the observed follow-up scores were consistently below expectation compared with predictions based on Duff’s SRB algorithms. In individual analyses, a greater percentage of MCI participants showed smaller-than-expected practice effects based on normal distributions. In secondary analyses, smaller-than-expected practice effects were observed in participants with worse baseline memory impairment and a greater number of impaired cognitive domains, particularly for measures of executive functioning/speeded processing.

Conclusions
These findings help to further support the validity of Duff’s 1-week SRB prediction equations in MCI samples and extend previous research by showing incrementally smaller-than-expected benefit from practice for increasingly impaired amnestic MCI subtypes.
Protein docking model evaluation by 3D deep convolutional neural networks
Authors: Wang Xiao , Terashi Genki , Christoffer Charles W , Zhu Mengmeng , Kihara Daisuke 
Published: November 2019

Abstract

Motivation
Many important cellular processes involve physical interactions of proteins. Therefore, determining protein quaternary structures provide critical insights for understanding molecular mechanisms of functions of the complexes. To complement experimental methods, many computational methods have been developed to predict structures of protein complexes. One of the challenges in computational protein complex structure prediction is to identify near-native models from a large pool of generated models.

Results
We developed a convolutional deep neural network-based approach named DOcking decoy selection with Voxel-based deep neural nEtwork (DOVE) for evaluating protein docking models. To evaluate a protein docking model, DOVE scans the protein–protein interface of the model with a 3D voxel and considers atomic interaction types and their energetic contributions as input features applied to the neural network. The deep learning models were trained and validated on docking models available in the ZDock and DockGround databases. Among the different combinations of features tested, almost all outperformed existing scoring functions.

Availability and implementation
Codes available at http://github.com/kiharalab/DOVE, http://kiharalab.org/dove/.

Supplementary information
Supplementary data are available at Bioinformatics online.
A country road: domain name disputes in .nz—is private dispute resolution working?
Authors: Liddicoat Joy 
Published: November 2019

Abstract
Domain name dispute literature focuses largely on generic top level domains and the Uniform Dispute Resolution Policy. Country code top level domains (ccTLDs) attract far less commentary. This article addresses this gap with a detailed evaluation of one ccTLD dispute resolution system: .nz. Evaluation of domain name disputes presents unique challenges: there is no single system for resolving disputes, diverse legal tests apply across jurisdictions and categories of disputes vary. The article examines .nz in light of these challenges, developing and applying evaluation criteria to draw conclusions about the number and categories of disputes, resolution rates and overall effectiveness. The article analyses cases, including appeals, under the “unfair registration” test which contrasts with Nominet’s .uk dispute resolution policy on which the New Zealand system was closely modelled. The author concludes .nz operates a just and workable dispute resolution service that demonstrates effective and responsible ccTLD administration.
Exponential-Square Integrability, Weighted Inequalities for the Square Functions Associated to Operators, and Applications
Authors: Chen Peng , Duong Xuan Thinh , Wu Liangchuan , Yan Lixin 
Published: November 2019

Abstract
Let $X$ be a metric space with a doubling measure. Let $L$ be a nonnegative self-adjoint operator acting on $L^2(X)$, hence $L$ generates an analytic semigroup $e^{-tL}$. Assume that the kernels $p_t(x,y)$ of $e^{-tL}$ satisfy Gaussian upper bounds and Hölder continuity in $x$, but we do not require the semigroup to satisfy the preservation condition $e^{-tL}1 = 1$. In this article we aim to establish the exponential-square integrability of a function whose square function associated to an operator $L$ is bounded, and the proof is new even for the Laplace operator on the Euclidean spaces ${\mathbb R^n}$. We then apply this result to obtain: (1) estimates of the norm on $L^p$ as $p$ becomes large for operators such as the square functions or spectral multipliers; (2) weighted norm inequalities for the square functions; and (3) eigenvalue estimates for Schrödinger operators on ${\mathbb R}^n$ or Lipschitz domains of ${\mathbb R}^n$.