bluuebunny/crossref_metadata_2025_split huggingface dataset:
Deposition and tribomechanical study of nanolaminate Ti/TiN/AlTiSiN/(AlTiSiN/TiAlSiN)n/AlTiSiN hard coating
Authors: Rupetsov Velko , Kolaklieva Lilyana , Chitanov Vassiliy , Angelov Milko , Raychev Raycho , Zlatanov Zlatko , Pashinski Chavdar 
Published: October 2019

Abstract
The application of Physical Vapor Deposition (PVD) hard coatings is one time-tested practice in the modern industry. Two of the main tendencies that promise a progress in this area are the combination of more chemical elements in one coating and the creation of nanolaminate structures. Since many combinations are possible in the design of the coatings, it could be expected they would have many different properties which are difficult to predict. In an attempt to work simultaneously in both of these directions, one nanolaminate Ti/TiN/AlTiSiN/(AlTiSiN/TiAlSiN)n/AlTiSiN coating was developed and its mechanical properties were tested. The results obtained give a reason to believe that it could be widely practically applied.
Lowering the noise level in the transport flows through reduction of the traffic barrier reflected noise
Authors: Kralov I , Nedelchev K 
Published: October 2019

Abstract
Reflected noise from traffic barriers usually leads to increasing of the noise level excited by the automobiles and trains. This effect requires the design of transport noise barriers for effective noise reduction behind them as well as to produce small level of reflected noise in source direction. This will effect in better noise environment for many passengers especially in case of busy traffic in rush hours. People affected by this effect are usually far more than the affected ones behind the barrier. One of the existed solutions is the use of expensive combined noise barriers with high degree of absorption. In this study a new passive transport noise barrier is designed, tested and analysed for a good reduction level of the reflected noise. It is done by appropriate design of the barrier profile performing source and reflected acoustic waves interference in small volumes near the barriers. The barrier construction, made by repeated, equally profiled elements, allows even the existence of acoustic bandgaps especially behind the barrier.
A method for determining the constant DC/AC motor power range and main technological spindle unit parameters
Authors: Guergov S 
Published: October 2019

Abstract
The article offers an original method for determining the constant DC/AC motor power range and basic technological parameters of the main spindle unit for multifunctional machine tools at the design stage. The method allows them to be determined, both in terms of the strength characteristics of the gearbox (or the strength characteristics of the system “machine-equipment-tool-work piece”) and in order to obtain the maximum spindle torque needed to ensure maximum machine productivity. The graphical interpretation of the method can be used both for designing new and for operating existing machines.
Selecting a location for establishing a rail-road intermodal terminal by using a hybrid SWOT/MCDM model
Authors: Stoilova Svetla D , Martinov Svetoslav V 
Published: October 2019

Abstract
The study proposes a methodology based on the combination of Strengths-Weaknesses-Opportunities-Threats (SWOT) analysis and Multi-Criteria Decision Making (MCDM) methods for selecting the most appropriate location for establishing an intermodal terminal. Analytic Hierarchy Process (AHP) and Preference Ranking Organization Method for Enrichment of Evaluations (PROMETHEE) are the MCDM methods used in the paper. The methodology contains four steps. In the first step we determine the alternatives variants of the location of intermodal terminal. In the second step the SWOT analysis have been applied to identify strengths, weaknesses, opportunities, and threats related to the surveyed system. The sub-criteria for each SWOT group have been defined. A total of 33 criteria are included in the study. Third step includes determination of weights of main criteria and sub-criteria by applying AHP method. The results of weights given in this step are used in the four step to ranking the alternative variants of the intermodal terminal location by using PROMETHEE method. The methodology has been approved for choosing the location of intermodal terminal in the city of Ruse. Five alternative locations of intermodal terminal have been studied. The results show that main importance of SWOT group has the strengths group criteria (0.471). It was found that the internal factors including the strengths and weaknesses have more important compared to the external factors including the opportunities and threats when studying the location of intermodal terminal. It was found that the main importance of all sub-criteria have the quantity of manipulated containers (9%), connectivity to road infrastructure (6%), rail connection with a port (5%) and average useful length of railway tracks used for loading/unloading activities (5%). The study shows that location that is situated in the place of the suspended Ruse-East railway yard is the best alternative for intermodal terminal location.
Study on the critical speeds of car’s movement with low and ultra-low profile tires in a turn
Authors: Taneva S , Ambarev K , Katsov D 
Published: October 2019

Abstract
This work proposes an improved algorithm for determining the critical speeds of car’s movement with low and ultra-low profile tires in a turn, where sliding of its axles occurs and overturning. The critical speeds are determined by the characteristics of the lateral slipping calculated for their critical normal loading. On the basis of the algorithm an interactive programming system in the MATLAB environment is developed. Graphic dependencies for the radius of the turn are presented, taking into account the slip of the tires with different speeds of a car Honda Civic Aerodeck 1.5iLS with low profile tires of size185/60R14. Results have been obtained on critical speeds against sliding in the front and rear axles and against the car’s overturning. Critical speed against overturning are determined in the absence of normal reactions for the inner steered wheels in a turn. The critical speeds of sliding are found to be lower than the overturning, and thus appear to be decisive.
The role of information and communication technologies as a part of business intelligence in improving the wealth of nations
Authors: Evseeva S , Kalchenko O , Plis K , Evseeva O 
Published: October 2019

Abstract
The paper is devoted to the task of determining the role of ICT as a part of business intelligence in improving wealth as the resultant factor in the development of the country and society. The authors consider the development of the wealth concept in a historical retrospective. The role of information and technologies as a part of business intelligence in the development of countries has been studied and generalized, digital transformation has been identified as the leading factor in ensuring the country’s economic growth. The paper presents data on the development of the digital economy for the period from 2010 to 2016 in developed countries and analyzes the state of the digitalization process in Russia. The authors put forward and test the hypothesis about the impact of ICT as a part of business intelligence on the Human Development Index, which determines the level of the country’s wealth according to the current concept adopted in the world community. The results of the research in Russia showed that there is a close relationship between the HDI as a result of the wealth indicator and the majority of indicators characterizing the virtual - digital environment - the Internet, computers, global virtual networks and mobile communications. In conclusion, the paper presents promising directions for further deeper analysis of revealing the degree of influence of each of the identified indicators, as well as the possibility of improving the country’s wealth based on the identified role of ICT as a part of business intelligence.
Data Management for Solving the Problem of Sequential Shaping Simulation
Authors: Mikheev V , Grechnikova A , Agafonova D , Klochkov Y 
Published: October 2019

Abstract
The publication presents the results of a study of the process of investing in the innovation of the Russian manufacturing industry (sample 2009-2017). Factors of economic efficiency of investment projects of the industry are revealed. It is proved that the efficiency of investment is determined by external factors, primarily by the level of economic concentration (CR3) of the market of innovative products. The coordination of the scientific result with the industry consolidation dynamics model (A.T. Kearney) is presented.
Microscopic and surface analyses of corroded Mg alloys
Authors: Marcheva Y , Loukaycheva M , Dimova B , Tsonev V , Kuzmanov N 
Published: October 2019

Abstract
Using optical and SEM microscopic observations and EDX analysis, the corroded surfaces of AZ91, AM50 and AE42 Mg-alloys in 3.5%NaCl were studied at condition of open circuit potential. Different surface composition, morphology, density and characteristics of the surface films were established. The corrosion potential, recorded for 5 days in the case of AE was studied and specific behaviour was observed. EDX analysis established the presence of Mg and Al in the corrosion products of the three alloys and Ce for AE42 and formation of oxides and/or hydroxides of these elements was assumed. A mechanism of dissolution of Mg alloys at OCP condition in NaCl solutions was discussed.
Innovation diffusion process in the Australian construction industry
Authors: Wipulanusat W , Panuwatwanich K , Stewart R A , Sunkpho J 
Published: October 2019

Abstract
Innovation diffusion process is an important component for construction companies to remain competitive in today’s changing business environment. The aim of this study is to examine how innovations in the Australian construction industry can be understood through innovation diffusion theories and empirical works. To achieve this goal, the author reviewed theoretical frameworks, and then analysed empirical works to shed light on the innovation diffusion in practice. The review found that effective innovation diffusion has played an important role in providing organizations with competitive advantages. From a socio-psychological perspective, leadership and team climate have had a direct effect on organizational culture, which indirectly impacts on innovation diffusion outcomes and business performance. Emphasizing the drivers and obstacles of innovation diffusion is also necessary to effectively develop a conceptual framework of innovation diffusion at project level which begins with knowledge and idea generation, and progresses to implementation and confirmation.
Design and construction monitoring and deformation analysis of super-large deep foundation pit
Authors: Zhou Junshu , Fang Guangxiu 
Published: October 2019

Abstract
Using the large and deep foundation pit of Metro Line 1 of Jinan west railway station as an example, this paper elaborated the design scheme of its retaining structure, formulated a monitoring scheme for foundation pit. In addition, through the real-time on-scene monitoring of horizontal displacement of pile top and pile body, and the monitoring data, we found the law of displacement of deep foundation pit supporting structure. The maximum horizontal displacement of pile body moves down gradually with the advancement of excavation support and the main construction. The maximum displacement occurs around 0.684H. This study has implications for similar engineering geological conditions of foundation pit supporting structure.
Model for predicting cost of rural road projects in Thailand
Authors: Lin Wai Phyo , Techapeeraparnich Wasaporn 
Published: October 2019

Abstract
Nowadays, construction cost plays an essential role in various projects, which are buildings, roads, railways, and bridges projects. Conceptual cost estimation in feasibility study is require high accuracy and less validation error especially in construction projects at early stages. The more improvement of estimation techniques, it would lead to the lesser problems of cost overrun, and extra expenses. This paper developed a cost estimation model for new constructed rural road projects. Considering the estimation methods for predicting the cost model, parametric method based on regression learner and NN method are applied. Previously, many researchers studied the cost applicable model by using various computer applications, so that this paper differed to compare these methods based on MATLAB. Accordingly, 44 road projects were compiled from DRR database, after that identifying the effective cost parameters referred on collected data. Subsequently, the data implementation process was focusing with regression learner based on automated regression training, and lastly, with NN toolbox concentrated on nftool for simulating the cost models. Another 7 road projects are tested with holdout validation process for these models. Due to this validation, we compare the predicted cost models within these methods. Finally, the developed models are reliable for not only the conceptual phase of future rural road projects but also the related construction fields can be recovered about the cost model creation.
Variation Prognostic Model on Port Infrastructures: Employment of Principal Component Analysis for Factor Extraction Instigating Disparity on Planning and Implementation Phase
Authors: Cabalag Maria Virginia , Silva Dante L. 
Published: October 2019

Abstract
Port is a transportation and communication marine infrastructure that is established for ship berthing and dockage, loading and unloading of passenger, storage of goods and other operational agendas that would impact a region or country in terms of social and economic aspects. Variation order is the modification on the design whilst construction is on-going. This is inevitable in a project. Through the utilization of Principal Component Analysis with a Cronbach’s Alpha of 0.930 and Kaiser-Meyer-Olkin Value of 0.763, nine components weighted, these are Actual Concreting and Precasting on-site for Structure formation, Meteorological Conditioning affecting Weather and Tides, Test Pile Apportionment on Both design and construction, Off-shore soil in-situ Properties, Behaviour and Suitability on fills, Inaccuracy of Geotechnical, Topographical and Hydrographical surveys, Project Release and Initiation Timing on engineering departments, Sudden unforeseen Turbulences during Pile Driving, Coordination of Planning and Implementation Departments, and Unavailability of Material Specification to Actual site from design. After extracting the regressor, assessment of completed port projects with variation and multiple linear regression was then employed to generate the model. The model had an R2 of 0.777 and an R of 0.882. Finally, the model was evaluated and has shown a significant value. Hence, a satisfactory breakthrough in an attempt to develop a model regarding variation order on port projects was established.
Development of construction blocks from alkaline activated basic oxygen furnace slag and Fly Ash
Authors: Sithole .N.T , Mashifana TP 
Published: October 2019

Abstract
The objective of this study was to develop basic oxygen furnace slag (BOFS) blended with Fly Ash (FA) based masonry blocks that can be used in building and construction. The effect of variation of FA, potassium hydroxide (KOH) concentration, curing temperature, solid-liquid ratio on the Unconfined Compressive Strength (UCS) was investigated. The optimum conditions for synthesis of BOFS/FA based masonry blocks was found to be 9 M KOH concentration, 20% Solid- liquid (S/L) and 1:5, FA:BOFS mixing ratio and curing temperature 80 °C. The masonry block prepared under aforementioned optimum condition achieved unconfined compressive strength (UCS) of 9.67 MPa. Characterization of the masonry blocks was done using X-Ray Diffraction (XRD) analysis, X-Ray Fluorescene (XRF) analysis. The major phase identified in XRD pattern for BOFS was larnite whereas for FA was glassy aluminosilicate. Optimum BOFS/FA masonry block had new phase which is zeolite (Philipsite) responsible for higher UCS of the construction block. The produced construction block met the minimum requirements for ASTM C34-13, C129-14a and South African standard (SANS227: 2007).
Sparse modeling for the geotechnical observation data
Authors: Kurita T 
Published: October 2019

Abstract
In the geotechnical engineering, it is a significant issue to construct the numerical models for simulation analysis based on the observation data. In this study, sparse modeling used as an effective modeling method in the field of machine learning and image processing was applied to the geotechnical engineering and its effectiveness was examined. Aa a case study based on the field observation data, the fused lasso which is a typical method of the sparse modeling was applied to model the velocity structure of the subsurface ground using the PS logging data. As a result of examination, it was found that simplified models can be obtained by increasing the value of the regularization parameter.
A review of the existing models to evaluate the ultimate bending moment of corroded reinforced concrete beam
Authors: Wang H J 
Published: October 2019

Abstract
Premature failure caused by steel corrosion is one of the most prominent durability problems of the reinforced concrete (RC) beams. Efficient evaluation of the ultimate bending moment of the corroded RC (CRC) beams is important for engineering practice. A great number of researches have been carried out, and various evaluation models have been proposed. However, the advantages and disadvantages of the existing models are still unclear, and less comparison studies among these models have been conducted. Therefore, the objective of this study is to review the existing models and clarify the merits and deficiencies of each model. Six empirical models for evaluating the ultimate bending moment of CRC beams are analyzed. Comparison study among these models is conducted based on 177 sets of experimental data collected from published literatures. According to the comparative analysis results, the advantages and disadvantages of each model are discussed. The comparison results show each existing model can exhibit good performance in evaluating a particular kind of experimental data. However, when the experimental data are out of the applicable range of each model, the existing empirical models may result in significant derivations.
Analysis of Geometry Effect on Laterally-loaded Large Diameter Bored Pile Deflection in Soft Soil
Authors: Tamara K , Ilyas T 
Published: October 2019

Abstract
A bored pile is one of the foundation type widely used in construction because of its design flexibility. For a laterally-loaded bored pile, additional pile and pile cap play an important role in influencing the lateral capacity. Large diameter bored pile with a 3.5 m diameter then proposed to substitute group piles in order to simplify the construction method aiming the same capacity. This study examines laterally-loaded large diameter bored pile deflection on soft soil as parametric studies with different pile length of 7 m, 14 m, and 21 m. Thick soft soil layer interpreted through soil testing data at Ancol, North Jakarta with the domination of silt. A thorough analysis of this system is modelled using a three-dimensional numerical method, PLAXIS 3D Foundation using push-over analysis that the deflection of laterally-loaded foundation reaches its tolerable deflection according to Indonesian National Standardization (SNI).
Effect of time dependent corrosion rate on residual capacity of corroded RC beam
Authors: Kioumarsi M , Baghban MH , Imperatore S 
Published: October 2019

Abstract
Corrosion is the most commonly severe defect in reinforced concrete (RC) structures and it mainly causes reduced rebar cross-section. The corrosion rate is the determining parameter of the progress of corrosion-induced damage. The present work is focused on the application of finite element (FE) analysis, using DIANA, to predict the residual capacity of reinforced concrete beam with different degree of corrosion. To this aim, existing experimental data is used to develop a FE model of corroded beams and to investigate their behaviour. This model is validated to predict the impact of time and current rate of corrosion on the residual load carrying capacity of corroded RC beams.
Development of new wood-concrete connectors
Authors: Khelil A. , Kiniagi C. , Boissière R. 
Published: October 2019

Abstract
The application of timber-concrete composites (TCC) connections in structures has increased over the past decades. The mechanical behaviour of these connections is largely influenced by the stiffness of the joints, both with regard to deformations and strength. This paper presents laboratory experiments and numerical simulations using ABAQUS performed on TCC with a new connector that has been developed in our laboratory. Collapse tests of Shear (push-out) tests, four-point bending tests on beams with different configuration and spacing are carried out within the serviceability load range to verify the slip modulus of connections which were derived from the push-out tests. Although the new connection is applied on notched timber, both experiments and 3D FEM simulations showed that the new connector exhibits stronger stiffness and has a significantly higher peak force performance.in constructing both.
The Potential of Enzyme in Reducing the Maturation Time and the Use of Ammonia in Concentrated Natural Rubber Latex
Authors: Wongkhat Jiraporn , Pattamaprom Cattaleeya 
Published: October 2019

Abstract
One of the most important parameters for indicating colloidal stability of concentrated natural rubber latex (CNRL) is the mechanical stability time (MST). The MST of CNRL after centrifugation is always low and slowly increases with storage time due to gradual hydrolysis of phospholipid on the surface of rubber particles into fatty acid soap. In this work, enzymatic approach was investigated to increase the colloidal stability of CNRL by using different grades and amounts of enzymes. The enzymes were tested with 2 grades of CNRL, which are the high-ammonia latex (HA latex) and low-ammonia latex (LA latex). We found that the MST of LA latex treated with 0.004% and 0.04% of Lipex reach the acceptable value (at least 600 sec.) within 14 and 10 days, respectively. In case of HA latex, the MST reached the acceptable value faster than that of LA latex (within 10 and 3 days at amount 0.004% and 0.04% of Lipex, respectively) while, the MST of commercial laurate-treated latex only increased slightly and could not pass the acceptable value after 31 days. In addition, the use of enzyme instead of laurate soap could reduce the use of ammonia in CNRL production.