bluuebunny/crossref_metadata_2025_split huggingface dataset:
SAEnet: an application for adjustment of horizontal network using particle swarm optimization algorithm
Authors: Hafid A , Sari D N I , Sobatnu F 
Published: December 2019

Abstract
The horizontal network of control stations plays an important role in geometric measurement activities, such as determining positions of point, distance, area, or even volume. One of the methods of determining horizontal network values is the least squares method. The method of least squares is one of the most frequently used methods to obtain unique estimates for a set of redundant measurements. The equations that are used in the horizontal network surveys are the nonlinear equations so it must be linearized in order to be computed using least squares method. The problem that arises when linearizing the nonlinear observation equation is the approximate coordinates of the network stations are needed for its computations. In order to handle this problem, the Particle Swarm Optimization (PSO) algorithm is applied as an algorithm for determining the approximate coordinate values of the network stations. The algorithm of PSO is a heuristic function that optimizes a problem by iteratively trying to improve a candidate solution toward the best solutions. The advantages of PSO are that PSO is designed for solving a problem more quickly when classic methods are too slow and finding an approximate solution when classic methods fail to find any exact solution. This paper presents the design of an application for horizontal network adjustment using PSO algorithm, namely SAEnet. The Algorithm was written in Matlab which is very effective in matrix manipulation and has been widely used in various fields of numerical computations. The computation of horizontal network adjustment using SAEnet application consists of determination of initial approximation values using PSO and the adjustment computation using the least squares method. SAEnet is also equipped with save menu to Microsoft Excel format and load menu from Microsoft Excel format. The test shows that the input and output of the program can run as expected. The results are then compared to other program, like STAR*NET, using a variety of data sets. The results of both computations show the maximum difference between both programs is 0.000040 while the average difference is 0.000020. The test shows that there is no significant difference between the results of the SAEnet and STAR*NET computation. Hence, SAEnet can be used for horizontal network adjustment computation.
Simulation Analysis for evaluating Smart technique of Energy Performance in Egypt
Authors: Mahmoud Ayman , Elkhiary Ayah 
Published: December 2019

Abstract
Building envelopes acts as the boundary between the outdoor environment and the indoor working spaces. The smart thing to do is think in terms of interaction, minimum use of materials and energy to reduce the environmental impact of this major human activity called building. Smart materials technologies are the keynote to 21st-century economic improvement. This paper represents a smart method to simplify the invention of design concepts and develop the improvement of building envelopes that are better suited to their environments. Smart envelopes can significantly increase levels of functionality, which include smart material of envelopes, play a significant role in the way systems adapt to environmental conditions, and provide a multi- operative boundary to control heat. The aim of the paper to emphasize the functional role of smart envelopes for environmental adaptation provides an analytical study of the types of smart materials available, giving new insight into innovative methods and techniques, understanding the search for smart envelope applied in architecture, and adaptation of an environmental sustainability. In this study, a BASE CASE model simulated with “Design Builder” software based on “Energy Plus” with the application of Smart technique as a part of achieving sustainable buildings. The results showed that the smart application in Egypt had the main impact on enhancing performance and as a result, a reduction in energy usage.
Teaching BPS to architects: A closer look at the building performance simulation ‘consumer’ and ‘performer’ training paradigms
Authors: Alsaadani S , Bleil De Souza C 
Published: December 2019

Abstract
This contribution builds upon a previous study, in which three university-level BPS training paradigms were identified. Using a critical literature review, we focus on two of these; training the ‘consumer’ and ‘performer’ architect, exploring similarities and differences between teaching approaches of these two paradigms. Divergences are found in the location of BPS teaching content within the wider scope of architectural program delivery. The ‘consumer’ paradigm is generally followed in undergraduate architectural education, tends to be taught as an elective module and is almost always linked to a design studio component. The ‘performer’ paradigm is linked to both undergraduate and postgraduate architectural education, is mostly affixed to stand-alone core technical modules and is sometimes attached to the design studio. Similar BPS performance domains are taught across both paradigms, but the rationale underlying BPS tool selection differs. Visualization capabilities and ease-of-learning tend to be the criteria used to justify selection of BPS tools used in articles describing the ‘performer’ paradigm. On the other hand, assignment of BPS tasks to an ‘expert’ under the ‘consumer’ paradigm allows for software with more complex analytical functions to be selected. To conclude, the findings demonstrate how moving beyond descriptions of individualized teaching experimentations in BPS research, toward cross-paradigmatic studies of BPS education, many contribute to the construction of a much-needed foundation to support BPS teaching in the future.
A framework for generating thermal performance envelope
Authors: Talaat Hazem , ElMasry Ayman 
Published: December 2019

Abstract
Throughout the last decade, environmental topics in architecture start to gain interest to preserve natural resources, and to improve the performance of designs. One of the great problems facing architects, is checking whether their designs compromise with the environmental needs or not. Thermal performance is one of the main issues related to environmental design. This research proposes a framework for thermal design of envelopes, by simulation and optimization of building envelopes based on computer algorithms and environmental simulation programs. Through analytical methodology, main optimization algorithms and thermal design parameters are analyzed to achieve the framework. It explains the essential concepts of computer programming, and how it is integrated into the architectural design process to achieve thermally efficient envelope. Designer is introduced to computer programming from a theoretical point of view, with an explanation of the types of input needed by the algorithms. In order to achieve this, different types of algorithms and their output, how to define the optimization problem and its variables, the different types of 3D virtual modelling and environmental simulation programs and their role in the process, are discussed. The framework can be summarized in the following steps: building envelope analysis in terms of geometry and its categorization, determining the thermal criteria and target performance, modelling and simulation of the building envelope, and finally applying algorithm and optimization of the envelope’s thermal performance.
Investigation on utilizing garbage as a resource for a sustainable neighbourhood: Case study of a neighbourhood in New Cairo, Egypt
Authors: Guirguis Marianne Nabil , Moussa Rania Rushdy 
Published: December 2019

Abstract
Waste management comprises the actions required for managing waste material produced from human activities from its source of origin to its final removal. Usually, it collects resources from all forms of matter such as gaseous, liquid, solid, and radioactive. This action is made to avoid the negative effects of wastes on the environment and human wellbeing. The effect of accumulating waste may be highly severe for numerous communities in developing countries such as Egypt. Egyptian neighbourhoods suffer from effects of accumulating local wastes and garbage. Public health and the visual image of the neighbourhoods, in addition to the different social, economic, and environmental aspects of life are also harmed. In Egypt, this issue becomes more challenging because the defined policies for waste managementare yet in their dawn stage and hence, results are not yet as anticipated, which inflicts severe environmental hazards on Egyptian communities and drains a large portion of the local economy. This study aims to propose a technique to manage the organic waste in Egypt by storing them in anaerobic digesters which turns the wastes into electricity and biogas. It will focus on investigating current social and environmental aspects of the neighbourhood, to determine if this proposal will be appropriate as a solution for getting rid of organic wastes and generate energy, in order to create sustainable neighbourhood. A questionnaire took place revealing that using anaerobic digesters will help the Egyptian government in solve one of its major challenges which is getting rid of neighbourhood’s wastes which decreasing the level of pollutions and epidemics especially in low income districts.
Piezoelectric Tiles Is a Sustainable Approach for Designing Interior Spaces and Creating Self-Sustain Projects.
Authors: Solban Madonna Makram , Moussa Rania Rushdy 
Published: December 2019

Abstract
These days, the third worlds countries such as Egypt are facing a hug challenge toward energy production. Energy crisis is the most critical issue facing these developing countries. In the recent couple of years Egypt has experienced a serious shortage in the power supply which affect negatively the industry sector as well as the residential sector due to the shortage of natural gas production and fossil fuel which prevented the government from providing the basic needs of Energy to the community. Moreover, it affects negatively the developing of this country and building a new mega projects. Renewable energy sources can be an extraordinary method to tackle the energy issue in Egypt, the increasing of energy costs and decreasing of fissile fuel production helps in decreasing the gap between the cost of generating Energy from renewables and fissile fuel. It is important to set up public Egyptian facilities based on renewable energy as metro stations instead of relying upon fossil fuel as a main source of power. Generating electricity from piezoelectric cells to power metro station is a sustainable solution for the environment, economy, and social needs. Using piezoelectric cells in high density projects helps in creating energy self-sustain projects, people will start to produce energy from walking throughout the facility. The aim of this research is to highlight the importance of replacing ceramic and granite tiles with sustainable piezoelectric tiles, which will create a self-sustain project by redesign an interior space of public facilities. Designing the flooring tiles that integrate piezoelectric cells produce a useful amount of energy for electrifying public facilities using the visitor’s high population density. The research started to analyses projects that replaced regular tiles with piezoelectric tiles to understand the objectives and constrains of using this sustainable building material in Egyptian public facilities.
Synthesis of cross-linked polyurethane with self-healing properties
Authors: Platonova E O , Vlasov E , Kireynov A , Polezhaev A V 
Published: December 2019

Abstract
Prepolymer synthesized from toluene-2,4-diisocyanate (TDI) (hard segment), and polypropylene glycol (PPG-2000) (soft segment) was end-capped with difurfurylamine groups. A new cross-linked self-healing polyurethane was obtained via Diels-Alder reaction of the en-capped prepolymer with N,N’-bismaleimido-4,4’-diphenylmethane (BMI). Thermal reversibility of the Diels-Alder reaction (DA-reaction) between terminal furanic rings of the polyurethane prepolymer and bismaleimide cross-linking agent designed to be responsible for self-healing. Polymers were characterized by NMR and IR spectroscopy and thermal analysis (DSC and TGA). Thermal reversibility of the DA-bonds in the cross-linked polymer was confirmed by DSC. The synthesized polymer has good processability and potential recyclability.
Modeling of the effective universal constitutive relations for elastic laminated composites with finite strains
Authors: Dimitrienko Yu I , Karimov S B , Kolzhanova D Yu 
Published: December 2019

Abstract
The article considers the modeling results of layered composites with finite strains deformation according to the individual layers characteristics. The article proposes an asymptotic averaging method version for layered composites with finite deformations and periodic structure. The method allows calculating the effective deformation diagrams connecting the averaged Piola-Kirchhoff stress tensors components and the strain gradient.
Computational modeling of the conjugated thermomechanical and aerogasdynamics processes for composite structures of high speed vehicles
Authors: Dimitrienko Yu , Zakharov A , Koryakov M 
Published: December 2019

Abstract
A conjugated problem statement for aerodynamics and thermomechanics of heat-shielding structures from thermally decomposing polymer composite materials is proposed. It is based on the iterative solution of the three types of detached problems: aerogasdynamics problem for viscous heat-conducting flows, internal heat and mass transfer and thermoelasticity of shell constructions. An example of the numerical solution of the conjugated problem is given. It is shown that due to the high temperatures of the aerodynamic heating of the structure made of a polymer composite material there can appear a polymer phase thermodecomposition and intensive internal gas generation into the structure of the material.
Modeling of thermal stresses in inorganic matrix composite plates based on the asymptotic theory
Authors: Dimitrienko Yu I , Sborschikov S V , Egoleva E S , Yakovlev D O 
Published: December 2019

Abstract
A mathematical model has been developed for calculating a temperature non-stationary field and thermal stresses in thin multilayer plates of fabric composite materials on an inorganic matrix based on an alum-chromophosphate binder. The model allows to take into account changes in the microstructure in the matrix and composite fibers during high- temperature heating, taking into account the physical and chemical transformations occurring in them, as well as to calculate thermal stresses in thin plates from the tissue inorganic composite taking into account the kinetics of changes in the characteristics of composites during heating. Methods of multiscale homogenization and finite element modeling of microstresses in periodic cells were used to calculate the characteristics of the inorganic composite, and the method of asymptotic averaging was used to calculate the stresses in the plates. Some results of numerical simulation of the change in stresses in the composite plate during heating are given
On the Modeling of Thin Bodies of Revolution
Authors: Nikabadze M U , Bogatyrev M A , Ulukhanyan A R 
Published: December 2019

Abstract
The new parametrization of the three-dimensional thin domain of an arbitrary body of rotation is considered, consisting in using several base surfaces in contrast to the classical approaches. The vector parametric equation is given. The geometric characteristics inherent to the new parameterization are determined. Expressions for the translation components of the unit tensor of the second rank and also relations connecting different bases and geometric characteristic generated by them are written. The determination of the moment of an arbitrary function is given. The motion equations and CR of the micropolar theory of elastic rotation bodies without a symmetry center of variable thickness are obtained under the new parametrization, from which equations are obtained for very thin and shallow rotation bodies, both variable and constant thickness. The equations of motion and CR of any approximation in the moments of unknown functions with respect to an arbitrary system of orthogonal polynomials and, in particular, for the system of Legendre polynomials are derived. The questions of setting initial-boundary problems are discussed.
Selection of composite material composition for non-evaporable getters of new generation
Authors: Aleksandrova M V , Nikolyukin Y V , Kurganova Y A 
Published: December 2019

Abstract
The article is devoted to the issue of synthesizing materials of non-evaporable getters of the new generation with enhanced operational properties. The promising compositions of getter materials are considered, their basic properties are analyzed, and parameters that have a significant effect on their size are selected. According to the results of the literature analysis and patent search, a strategy was developed, on the basis of which three experimental compositions of the material for the non-evaporable getter were determined on the basis of the Ti-Zr system, a visualization-calculation model of the structure was constructed. Based on the traditional technology, the technology for the final product was developed. The results of studies of experimental samples of the material selected composition are presented and the level of acquired operational properties is predicted.
High density polyethylene modified with cyclohexyl dichloro-phosphonate
Authors: Shaov A Kh , Kharaev A M , Borukaev T A , Borodulin A S , Kalinnikov A N 
Published: December 2019

Abstract
A chemical modification of high-density polyethylene with cyclohexylphosphonic acid dichloride was performed during high-temperature extrusion. The physicomechanical properties and thermal stability of the modified polyethylene were studied.
Evaluation of the effectiveness of the introduction of a discrete filler in the aluminum matrix melt
Authors: Kurganova Yu A , Chen Yijin , Shcherbakov S P 
Published: December 2019

Abstract
Experimental samples of metallic composite materials filled with discrete Al2O3 fibers with a diameter of 10–20 nm were obtained by liquid-phase mechanical mixing. A technology has been developed for the effective introduction of a discrete filler into an aluminum melt, which ensures the absorption of the filler by the matrix. Device for the introduction of the filler was designed and manufactured. Recommendations were given on the choice of the composition and technological regimes for the introduction of a light discrete component of a composite material for sufficient assimilation by its matrix and ensuring the homogeneity of the structure. The structure and properties of the obtained samples of the new material have been studied. The changes made by the introduction of the selected nanodiscrete filler into the aluminum melt and the changes made by additional technological methods are analyzed. The effect of introducing discrete Al2O3 fibers into an aluminum melt was demonstrated.
Electric treatment of alumina composite materials
Authors: Minenko G N , Timchenko S L 
Published: December 2019

Abstract
A method of processing alumina composite materials using electric current is presented. Aluminum matrix composites based on aluminum alloy AK12 were obtained in a pass-through vessel with the addition of composite particles to the stream of molten material without the influence of an electric current and with the influence of a current. As a composite additive, graphite enriched with crystalline grade TG-1 and particles of titanium carbide (TiC) were used, the amount of the components being injected was 15 volume percent.
Measurements of the mechanical properties of the original AK12 alloy and composite material based on the AK12 alloy with the addition of composite particles carried out without an electric field and with exposure showed that the greatest increase in strength properties of alloys treated with an electric field was recorded for an aluminum matrix composite material with TiC particles, which amounted to 20% for ultimate strength and 24.5% for hardness. An increase in ductility was found in a composite material with a TG-1 composite additive, for it an increase in the relative elongation was 15.6%, while the electric current treatment of the composite material with a filler in the form of TiC did not lead to a change in the relative elongation of the sample material. In general, the increase in the strength properties of an aluminum matrix composite material with titanium carbide particles (TiC), after it was treated with an electric current, turned out to be slightly larger than that of an aluminum matrix composite material with particles of TG-1 enriched crystalline graphite. The physical mechanism of the influence of electric current on the properties of ALCM is given.
Influence of refractory nanosized particles of tungsten carbide and titanium on the structure and properties of the weld metal
Authors: Pankratov A S , Kobernik N V , Samokhin A V 
Published: December 2019

Abstract
The paper considers the influence of nanosized particles of tungsten and titanium carbides on the structure and properties of the weld metal of welded joints made by automatic submerged-arc automatic arc welding. To add them into the weld pool, an alloying composition was used in the form of composite granules based on nickel powder (PNE-1 as per GOST 9722). The prospects of using nanosized tungsten carbide particles for modifying the weld metal with the aim to increase the values of impact strength were shown. However, titanium carbide in the same conditions leads to a decrease in the average value of impact strength, despite the modifying effect of its use.
Application of a New Method of Non-Adhesion Defect Simulation in Multilayer Honeycomb Structures from Polymer Composite Materials for Various Nondestructive Testing Methods
Authors: Rusakov D , Chernushin V 
Published: December 2019

Abstract
A new method of non-adhesion defect simulation in multilayer honeycomb structures from polymer composite materials is discussed. This simulation method is particularly relevant for honeycomb structures with large cells. An experimental model for the comparison of two simulation methods, a new one and flat-bottom hole simulation, was fabricated. Advantages and features of application of the new simulation method for the nondestructive testing methods such as impedance, free oscillation, and through-transmission ultrasonic and thermal methods are shown.
Study of thermal expansion anomalies of multilayer steel materials at high temperatures
Authors: Kabantseva V E , Safonov M D , Plokhikh A I 
Published: December 2019

Abstract
The paper presents the results of a study of the anisotropy of the thermal coefficient of linear expansion (CTE), which was found in a multilayer metallic material based on steels, made by hot batch rolling. It is established that the material consisting of alternating layers of steel, has abnormally low CTE values in the direction perpendicular to the rental plane. To explain this phenomenon, a hypothesis was proposed about the relationship between normal and tangential stresses arising at the interlayer boundaries of such material. The confirmation of the hypothesis of the leading role of reactive stresses in the manifestation of the specified invar effect are the results of metallographic analysis. It is also shown that the conduct of cyclic high-temperature heating provokes recrystallization at the interlayer boundaries caused by the difference in the thermal expansion coefficient values of the adjacent layers and the effect of high temperature.