bluuebunny/crossref_metadata_2025_split huggingface dataset:
An investigation to determine the bearing capacity of driven piles and pressed friction pile using practical method
Authors: Duong Le Thuy 
Published: January 2020

Abstract
This article considers the question of the necessity of soil porosity coefficient in determining the bearing capacity of vertically loaded driven and pressed pile (vertical load) by analytical method using the calculated values of soil resistance on the pile’s side surface and under its toe, defined by the tables of standard documents (practical method). Statistical analysis, based on the theory of planning experiments, shows that additional consideration of the soil porosity coefficient allows to increase the accuracy of calculation of pile bearing capacity, which is confirmed by the results of field tests of piles and cone penetration tests of soils. It is shown that, depending on the soil porosity coefficient, the bearing capacity of a vertically loaded pile can vary up to 2 times. To calculate the load-bearing capacity of driven and pressed piles by the analytical method based on the results of engineering and geological surveys taking into account the soil porosity coefficient, the method developed on the basis of Z. Sirojiddinov’s probabilistic-statistical processing of test results by vertical static load testing on a large number of piles in various soil conditions is recommended.
Data analysis in price police marketing research in construction
Authors: Grineva O , Shirochenskaya I 
Published: January 2020

Abstract
The article deals with the data analysis marketing approach to pricing in construction in the segment of luxury housing at the present stage. The authors consider three approaches to setting the price of luxury housing in construction, dwell on the marketing aspect of determining the price. The problem of perceived quality and its relation to price is described at length. The authors demonstrate that psychological pricing is one of the common approaches to price determination in this sector of construction industry. The article presents the results of survey aimed at young Russian consumers. The distinctive features of this segment and their requirements to justify the price are described in detail.
A comparative study of ordinary piles and superlong piles in consolidating soil
Authors: Znamenskii V V , Hegazy O M 
Published: January 2020

Abstract
This paper presents finite element analyses of negative skin friction on a short single pile, long pile and superlong pile under various conditions. Negative skin friction is a most common problem in designed and construction of pile in a highly compressible soft soil. In this paper, a 3D-dimensional axisymmetric model is built in the finite element program, ABAQUS6.14. The model first is verified with a centrifuge test results. The study concluded that the neutral plane is located closer to the end of the pile as the end bearing increases. Based on the analyses, it is found that the location of the neutral plane is significantly influenced by the pile tip location from bearing layer. the normalized neutral plane decreases with the increase of the pile length embedded in the clay layer. Closed form equations of Shong, 2002, predict the numerical results in well agreement.
Method of integration finite element analysis into the SHM systems
Authors: Korgin A V , Ermakov V A , Zeyd Kilani L Z 
Published: January 2020

Abstract
In this article, the authors propose a modernized SHM system, which involves the integration of finite element software into it. The block diagrams of interaction between the standard monitoring system and the modernized one are presented. The use of this scheme for oil tank monitoring is proposed, as well as comparisons of calculated and experimental studies are presented, which confirms the accuracy of calculations and the feasibility of using this scheme.
A modified penalty function method for treating multi freedom constraints in finite element analysis of frames
Authors: Quyen Vu Thi Bich , Tien Dao Ngoc , Dung Nguyen Nhu 
Published: January 2020

Abstract
In finite element analysis, treating boundary condition having multi freedom constraints is needed to produce modified system of equation based on master stiffness equation considering multi freedom constraint. Generally the operation of imposing multi freedom constraints can be developed using Master-Slave Elimination, Penalty Augmentation or Lagrange Multiplier Adjunction methods. The master-slave method is useful only for simple cases but exhibits serious shortcomings for treating arbitrary constraints. The Penalty Augmentation method and Lagrange Multiplier Adjunction are better in many applications. But there are not free of disadvantages. The penalty method has difficulty of choice of weight values that balance solution accuracy with the violation of constraint conditions. The multiplier method is sensitive to the degree of linear independence of the constraints, and the bordered stiffness is singular in the case of the dependent constrains. To reduce the disadvantages of these methods, this paper presents a new method for treating multi freedom constraint. Proposed method is similar to penalty function method and it is called “modified penalty function method”. The concept of the modified penalty function method is based on the constructing equivalent solver system of equations from traditional modified system using regulatory parameters. The basic of method for selecting the regulatory parameters is reducing the violation of modified system. For solving equivalent system the authors proposed an iterative algorithm for seeking the solution. The calculation programs are established based on proposed algorithm. The calculation results using the proposed method matched with the calculation results using other methods.
Nonstationary Deformation of Cylindrical shells Under a Plane Pressure Wave
Authors: Abdukadirov Sagdulla , Yuldoshev Bakhtiyor , Urinov Bakhtiyor , Nosirov Abdurasul 
Published: January 2020

Abstract
Nonstationary deformation of a cylindrical shell located in an infinite elastic medium is studied under plane pressure wave with a front parallel to the shell axis. A combined solution method is used in the paper. Separating the angular coordinate by the Fourier method, the plane problem is reduced to a series of one-dimensional problems for each harmonic. Applying the Laplace transform over time to these systems of equations, the exact solution in the images is obtained. Asymptotic solutions of the stress-strain state at large values of time t → ∞ are obtained. In parallel with this, a truncated system is numerically solved using an explicit finite-difference scheme and a method for minimizing numerical dispersion, which gives an accurate description of front discontinuities. A comparison of both solutions made it possible to determine the applicability limits of the asymptotic forms and to obtain an assessment of dynamic state of shell and medium during the entire time of interaction.
Machine translation system modeling based on sentences comparison
Authors: Sak Alexander 
Published: January 2020

Abstract
The problem urgency is determined by an increasing need for natural language processing systems especially in the area of construction and civil engineering due to an enormous amount of document in foreign languages to deal with. Author’s purpose is to figure out an approach to machine translation system based on initial sentence and online dictionaries examples comparison. Although online dictionaries are designed to be used by humans, application of some principles based on the theory of graphs and syntactic analysis as well as methods of sets allows to use them as thesaurus for natural processing systems. The author proves the reliability of this approach by using the properties of a relation such as reflexivity, symmetry and transitivity. As a result the author displays a part of a syntactic analysis block of his computer program as well as a block of the program responsible for comparing sentences on the basis of fundamental products. At the end of the paper the author comes to the conclusion that such an approach can be extended not only to the translation problem but also to a broad range of natural language processing issues.
Modelling the reliability of the implementation of the schedule building work
Authors: Evseev V O , Borkovskaya V G , Barkhi R 
Published: January 2020

Abstract
The main issue of the study is the analysis of the impact of the level of information security of the construction process and the impact of the level of professional competence of personnel on the reliability characteristics of the planned terms of construction work. The aim of the study was to construct a simulation model and conduct simulation cycles/experiments in order to obtain the probabilistic characteristics of the output parameters, which are the possible terms of construction and the probability of implementation of these terms. Also, the aim of the study was to determine the permissible level of professional competence of personnel and the permissible level of non-availability of primary information necessary for construction work. Results. Methods of computational mathematics in the Excel software environment built a simulation model of the construction process, which includes the sequential execution of several stages of construction work, taking into account the level of information uncertainty and probabilistic level of competence of personnel. Numerous graphical information of the change of construction terms under the influence of probabilistic factors is given. Conclusions: the Model has shown the possibility of controlling the probability vector of the construction process, and the ability to bring its output probability characteristics to acceptable deviations from the planned value.
Granular metamaterials for seismic protection. Hyperelastic and hypoelastic models
Authors: Kuznetsov Sergey , Maigre Hubert 
Published: January 2020

Abstract
The hyperelastic potentials along with hypoelastic models applicable to describe dynamic behaviour of the granular metamaterials at wave propagation in their structure under seismic activity are studied. The specially constructed potentials suitable for bimodular materials are analysed. Effects of possible mechanical energy transformation due to formation and propagation of the shock wave fronts are discussed.
Nonisocyanate hybrid polyurethane floorings based on cyclic carbonates: optimal compositions and service properties
Authors: Figovsky O L 
Published: January 2020

Abstract
Hybrid nonisocyanate polyurethane (HNIPU) materials are formed by the reaction between adducts of the oligomeric cyclocarbonates with primary di- and polyamines and epoxy oligomers. These materials do not have pores due to the reaction of their formation is insensitive to the moisture of fillers or substrate surface. Chemical resistance of the obtained material containing intramolecular hydrogen bonds is 1.5-2 times greater than material of the same chemical structure but without such bonds. The new material as well as ecologically safe method of its manufacture is discussed. HNIPU materials could be applied for monolithic floor coverings having high chemical-, crack-, wear- and fire resistance and minimal absorption of toxic or radioactive contaminations. The floorings have high adhesion, wear and impact resistance; do not contain organic solvents, harmful and toxic isocyanate substances. Monolithic two-component HNIPU floor coverings are used for manufacture of seamless floors where cleanliness, durability and abrasion resistance are crucial. The optimum composition and operational data of the flooring coverings are discussed.
Cluster Evolution from Ultrafast Laser Irradiation of Gold Nanoparticle: A Molecular Dynamics Study
Authors: Fahdiran Riser , Sugihartono Iwan , Handoko Erfan , Budi Setia , Urbassek Herbert M. 
Published: January 2020

Abstract
We study the evolution of clusters from ultrafast laser induced ablation of Gold nanoparticle by means of Molecular Dynamics (MD) simulation. The energy given to the system are varied from 2 eV/atom, with increment 1 eV/atom, up to 8 eV/atom which already above ablation threshold. The nanoparticle is considered to absorb energy from laser irradiation instantaneously and homogenously throughout the system and MD follow the trajectories up to 20 ps. The case for the lowest energy breaks up the system and forming hollow structure. While starting from 3 eV/atom, the system tears up and evaporate with final temperature above 2500 K. Clusters formation for all energies indicated that number of monomers increases following the increasing of energy while the sizes of overall cluster is decreases.
Detection of heavy metal containment of soil pollution due to waste of paper industry using Nd:YAG laser induced breakdown spectroscopy
Authors: Sugito H , Khumaeni A , Binu Q M 
Published: January 2020

Abstract
Detection of heavy metal containment of soil pollution has been made by using laser-induced breakdown spectroscopy (LIBS). A pulsed Nd:YAG laser (1064 nm, 8 ns, 200 mJ) was focused on to a soil sample, which is prepared in the form of pellet, at atmospheric pressure. Emission spectra taken from the waste-contaminated soil and uncontaminated soil were obtained. Plasma emissions are then detected using a multichannel analyzer (OMA) to obtain the emission line spectrum that represents the content of atoms and molecules in the target material. The spectrum is recorded and compared with the spectrum of reference standards of atoms, ions and molecules (National Institute of Standards and Technology/NIST) so that the atomic and molecular content in the sample can be known. From the results of the study it was found that there are elements of heavy metals in the form of Fe, Cd, and Mg in polluted soils.
Thermoelectric Properties of SbTe
Authors: Najma Zahiroh Sahdianingrum , Singsoog Kunchit , Melania Suweni Muntini , Seetawan Tosawat 
Published: January 2020

Abstract
From the research to determine the thermoelectric properties and crystal structure of SbTe material synthesized by ball mill at 350 rpm for 10 h and sintered with hot press. The hot press method was varied at the time of hot press for 1, 2 and 3 h. The hot press temperature is 400 °C with a pressure of 25MPa. Then all materials were tested by XRD and ZEM 3. Based on the XRD test performed, all materials had hexagonal crystal structures. From ZEM 3 measurement known that the best thermoelectric properties value is in sample 3 which has an electrical resistivity 0.35 mΩcm at 331 K, Seebeck coefficient 147 µV/K at 473 K and power factor 4.53 mW/mK2 at 331 K.
Synthesis and Characterization of Nd2Fe14B Powder by using Mechanical Milling of Flakes NdFeB
Authors: Ramlan  , Setiabudidaya Dedi , Suprapedi  , Amminudin Bama A , Muljadi  
Published: January 2020

Abstract
Flakes NdFeB is one of type NdFeB alloy made and it was produced by strip casting method. Flakes NdFeB can be used as a raw material to produce sintered permanent magnet and it has about 0.2 – 0.3 mm in thickness. The flakes of NdFeB was milled by using High Energy Milling (HEM) machine and used a liquid toluene as milling media. The milling time was varried such as : 15, 30, 60 and 90 minutes. After milling, the samples were dried by using vacuum dryer at temperature 80°C under vacuum (10 mmbar) for 2 hours. The fine powder samples were analyzed crystall structure by using XRD, measured magnetic properties by using VSM and also measured particle size distribution (PSA). The characterization result show that the milling time gives an effect on the crystal structure and magnetic properties, where samples with milling time 60 dan 90 minutes has Fe phase as dominant phase and the Nd2Fe14B phase does not existing also the coercivity value tends to decrease until lower than 900 Oe. Samples with milling time about 15 and 30 minutes have Fe phase and Nd2Fe14B phase also they have corecivity value about 2000 – 2250 Oe. The means of particle size is achieved about 43.59 µm at sample with milling time 15 minutes.
Mechanical Properties of Natural Rubber Compounds with Oil palm boiler ash and Carbon Black as a Filler
Authors: Bukit N. , Ginting E.M. , Sidebang E. , Frida E. , Bukit B.F. 
Published: January 2020

Abstract
This study aims to determine the mechanical properties of natural rubber compounds with variations of OPBA nanoparticle fillers and carbon black. Preparation methods for natural rubber compounds using Open Mill. Indonesian rubber standard -20 (SIR-20) mixed with anti-oxidants, activators, curing agents, accelerators and OPBA nanoparticle fillers size 56.31 nm and commercial Carbon black type (N330) with variations (0,2,4,6 and 8)% wt. The results showed that tensile strength increased with the increase in the composition of OPBA nanoparticles and carbon black, as well as the elongation of break and hardness. The best composition of OPBA filler 8% wt showed a hardness of 52 Shore A, a tensile strength of 1.7 MPa, an elongation of break 150%. The best composition of carbon black 8% wt filler with a hardness of 55 Shore A, a tensile strength of 2.5 MPa, elongation breakdown of 140%.
Synthesis and characterization Fe3O4/GOnanocomposites as lithium-ion battery anodes (LIBA)
Authors: Simamora P. , Al Khalil J. , Rajagukguk J. 
Published: January 2020

AbstractThe Nanocomposite based on magnetit-graphene oxide Fe3O4/GO for Lithium-Ion Battery Anodes(LIBA) has been succesfully synthesized by co-precipitation method. First, GO was synthesized by Hummer’s Method and Nanoparticles Fe3O4were synthesized by co-precipitation method and coated with PEG 6000. Then the results were characterized by XRD and SEM. From the results obtained, graphite has become graphene oxide indicated by a shift of 2θ from 26,18° to 11,7°. Nanoparticles Fe3O4have also been successfully demonstrated with corresponding results. As well as Nanocomposite Fe3O4/GO which match the characteristics. I-V Meter results showed that nanocomposites have good electrical properties.
Effect of antimony (III) oxide on reduction of bubbles from glass melting process
Authors: Singkiburin N. , Srisittipokakun N. , Keawkhao J. 
Published: January 2020

Abstract
In this paper, studied the refining effects of Sb2O3 and ultraviolet transmitting property of NaCaBSi glasses. These raw materials were weighted according to the (35-x)SiO2: 30B2O3:15Na2O:10CaO:10ZnO:xSb2O3 where x=0.0, 0.05,0.1, 0.5, 1.0 and 2.0 mol%. NaCaBSi glasses were obtained by using melt quenching technique and characterized by using density, refractive index, optical absorption spectra and the number of bubbles in glass measure as a function of different concentrations. The density (ρ), molar volume (VM) and refractive index obtained were found to increase with increases in the concentration of Sb2O3 in the glass matrix. The optical absorption spectra of glasses were measured in the wavelength of 200 – 2,000 nm. Number of bubbles in glass decrease when increasing Sb2O3 concentrations.
Synthesis and Luminescence properties of Lithium Aluminium Phosphate Glasses Doped with Nd3+ Ion for Laser Medium
Authors: Sangwaranatee N , Chanthima N , Kaewkhao J , Tariwong Y 
Published: January 2020

Abstract
Nd3+ ion doped lithium aluminium phosphate glasses were synthesized and studied their properties for laser medium application. The density and the refractive index of the glass samples were carried out at the room temperature. The optical and luminescence properties were studied by investigating absorption and NIR emission spectra of the glass samples. The glasses absorbed photons in ultraviolet (UV), visible light (VIS) and near-infrared (NIR) regions are clearly observed from absorption spectra. For the photoluminescence properties, the glass samples showed the strongest emission at 1063 nm when it were excited by 581 nm which assigned to the energy transitions of Nd3+. The three phenomenological Judd-Ofelt parameters (Ω2, Ω4, Ω6) were determined from the spectral intensities of absorption band in order to calculate the radiative transition possibility (AR), stimulated emission cross section (σ(λp)) and branching ratio (βR) of the w4F3/2 → 4I9/2, 4I11/2 and 4I13/2 transitions. From the obtained results the conclusions made about the possibility of using these glasses as laser material.
Surface Thermal and Electric charge of PN Diode Expose by Soft Radiation Flash Exposure
Authors: Sangwaranatee N , Srithanachai I , Niemcharoen S , Chaiyasoonthorn S 
Published: January 2020

Abstract
In this study present the effect of soft radiation flash exposure (SRFE) to forward bias current-voltage (I-V) of PN diode by using COMSOL simulation program. The results show surface thermal and electric change while expose by radiation with flash exposure technique. Series resistance (Rs) increase around 2 times and close to idea case after expose by radiation, the radiation will impact to bulk defect and reduce surface recombination. SRFE induce temperature on surface and deep into silicon bulk. The value of Rs increase with increase expose time. The changing of Rs becomes independent from radiation dose at high forward bias voltage.
Fabrication and Characterization of Adding Coconut Shell Actived Nanocarbon to Lightweight Concrete
Authors: Lubis H , Sharman E , Chairina E , Siregar I , Rizky M , Maiya D , Machdhalie T 
Published: January 2020

Abstract
Coconut Shell actived Nanocarbon to Lightweight Concrete have done. LWC mixture of CS actived nanocarbon fillers made by mixing PPC cement, sand, broken stone, coconut shell actived nanocarbon fillers and water in various proportions. The ratio of CS actived nanocarbon on filler used (x = 0%, 5%, 10%, and 15%), with the aim of getting a different level of compressive strength testing. The particle size of activated CS carbon using the high temperature physical activation method 800C and chemistry (immersion of ZnCl2 solution) has an average diameter of 4,842.8 nm. The SEM shows that high porosity occurs and the shape is not homogeneous. EDS analysis to determine composition of the elements in the sample is known that the CS activated carbon samples have a maximum value in the element Carbon, Oxygen. The sample of CS actived Nanocarbon to LWC x = 0%, the results of the maximum value of % mass and % atom are the elements Oxygen, Carbon, and Calcium. For x = 10% the maximum value are the elements Oxygen, Carbon, and Silicon. The value of the strength of the objects in the CS activated carbon filler concrete sample (x = 5%) has maximum strength value 12.9 Mpa.
Application Of Geoelectrical Measurements For Identify The Liquefaction Potential Area In Lobu Tua Village
Authors: Syandi Ricky , Tampubolon Togi 
Published: January 2020

Abstract
Active subduction off the Indian Ocean coast of Sumatra, Sumatra Subduction Zone, admits the responsibility of triggering earthquake along the boundary region on Sumatra Island. Lobu Tua Village is located near to coast Sumatra that has an underground layer in the form of Alluvium which is considered in the vulverable subsurface layer. The aim of this research is investigating the characteristics of stratification and soil properties in Lobu Tua village by using geoelectrical Data is collected from resistivity meter of ARES-G4 v4.7 SN: 0609135. Schlumberger Geoelectrical method is applied to do groundwater mapping by resistivity value at some path. The first path shows the results of electrode measurements are 6.38 meters of the base layer from the lateral surface with the area of silt soil 155 meters, may lead to land subsidence (liquefaction). The second path shows the groundwater-surface in the sounding layer is 21 meters with the potential landslides. The 2-dimensional cross-sectional model image was performed to display the cross-sectional resistivity of the rock coating method by using the Res2Dinv.