bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determining the parameters of induction motors by Genetic Algorithms
Authors: Stoykova Stela , Spasov Vasil 
Published: October 2019

Abstract
The paper presents an approach for determining the equivalent circuit parameters of two widely used induction motors types by Genetic Algorithms. The T-shaped equivalent circuit without considering the steel losses is utilized. Genetic Algorithms are applied and the results are compared by using one, two and three data sets. The accuracy of the proposed approach is analyzed by determining the relative error in the parameters, obtained by Genetic Algorithms, with regard to analytical values. The different computation times for one, two and three data sets are discussed. The results indicate that to obtain low relative error, the proposed approach using the conventional parameters settings and fitness function needs three points from the motors load curves.
Computer technologies in shipping and a new tendency in ship’s officers’ education and training
Authors: Belev B C , Daskalov S I 
Published: October 2019

Abstract
This article presents the results of the authors’ work on a project of the European program Erasmus+ “Diversification of seafarers’ employability paths through collaborative development of competences and certification” – DivSea. In this project, the Nikola Vaptsarov Naval Academy is actively involved in partnerships with related maritime education institutions from Romania, Cyprus and the Netherlands. The aim of the project is introducing qualifications required by the marine labour market into the European education and training institutes to ensure transparency and recognition of skills and qualifications to facilitate learning, employability and labour mobility. Transferring the aim to the shipping, we propose to use modern ship communication equipment and computer technology to enable seafarers to access up-to-date training and qualifications at any point in the World. The created and developed training programs by the participants in the project fill the gap created by the rapid development of shipping over the last twenty years and the changes in maritime legislation in this regard. The opportunities for ship Internet delivery at every point of the world ocean are used. These communication technologies enable the training of marine professionals to become an ongoing process.
Legal data extraction and possible applications
Authors: Stoykov K , Chelebieva S 
Published: October 2019

Abstract
The functioning of the modern society provokes creation of significant number of documents, most of them in text form. Many of them are legally relevant and complex in nature, which makes their understanding difficult. They are written in nature language for people, which is hard for computer processing and hence hard for further analysis. Documents represent an abundance of data in unstructured form. They can be handled using NLP methodology. Different models, trained for specific use cases are used, depending on a type of legal document. Automation of number of processes can save time and speed up work on document processing. This, of course, does not rule out the need for highly qualified lawyers. The goal is to ease their work in terms of processing large amount of documents. Increased productivity should be beneficial for both natural and legal persons when working with textual and legal issues.
Substantiation of multinomial classification using ensemble learning approach
Authors: Goel Lipika , Damodaran D , Sharma Mayank , Khatri Sunil Kumar 
Published: October 2019

Abstract
The software defect prediction is the most operative research domain in software engineering as it enhances its reliability. The availability of defect data related to different projects leads to cross project defect prediction an open issue. This paper instanced on multiclass/multinomial classification of defect prediction on different categories of cross projects. The ensemble learning statistical models – Random forest and Gradient Boosting are used for classification. An empirical study is carried out to determine the predictive performance of the within project and cross project prediction models. Depending on the number of defects, class level information is classified into one of three defined multiclass. The homogeneous set of object oriented metrics is used for training the model. Furthermore, k-fold cross validation is done to evaluate the training accuracy of the statistical models. Major outcome of the paper concludes that multinomial/multiclass classification is applicable on cross project data and has comparable results to within project defect data with statistical significance.
Algorithm for assessing the quality of service in special-purpose networks during operation
Authors: Kireeva N , Zastupov V 
Published: October 2019

Abstract
This article is to show an algorithm for assessing the quality of service in special-purpose networks, regardless of the type of traffic being transmitted and the network architecture. This method allows to obtain a detailed assessment of the quality of service, as well as to adjust the values of the characteristics of the network during the evaluation. The values used in the calculations are entered in the database to aid in the design of new networks.
Assessment of the Internet of Things Projects on the Real Estate Market
Authors: Pupentsova S , Leventsov V , Livintsova M , Alexeeva N , Vodianova S 
Published: October 2019

Abstract
This paper discusses the concept of the Internet of Things. It analyzes the existing definitions, and introduces a new definition of this concept. In this research study, the experience of the Internet of Things in the world has been analyzed, the possibilities of deflationary development of the economy have been identified with the use of the Internet of Things. The paper presents directions for important qualitative changes in economy and for organizational and technological transformations of production, which may be induced by the development of the Internet of Things. The “smart home” system market has been examined. Its potential has been identified for Russian companies that work in the field of information and telecommunication technology connected with the development of the Internet of Things. To justify the efficiency of money investments into the “smart home” system and services, the algorithm of cost estimation for such systems, which can be used in making a decision about investing, is proposed. The authors conducted the review of the typical projects offered with the “smart home” system. The power law dependence of the unit cost of the system installation from the floor space of the object has been received. The internal rate of return on investment for the introduction of the “smart home” system has been identified at the level of 50%.
The artificial intelligence methods testing in case of engineering diagnostics system creation of the synchronous machines
Authors: Polishchuk V , Baratova K 
Published: October 2019

Abstract
Due to the lack of the exact mathematical processes description for internal faults diagnosis of synchronous machine rotor winding. To solve the problem of concurrent processing of the indirect diagnostic signs complex connected with the concrete type of multiple disabilities. It is the author’s opinion that such problem is necessary to solve by artificial intelligence systems accepted in the theory and practice. The architecture of intelligent diagnostic system and the technical condition forecast of the synchronous machine rotor winding on the basis of the fuzzy logic mathematical tool are offered. Diagnosing reliability of and selectivity support determination of synchronous machine rotor winding defect category is reached by complex conjugation of separation of diagnostic information sensitive methods on the basis of intellectual digital signal processing methods. It is proved experimentally that the fuzzy logic using provided diagnosing reliability of synchronous machine rotor winding turn-to-turn short-circuit at the 1,5% level of rotor pole winding Visualization of all making decision stages about the existence and defect type was made in Fuzzy Logic Toolbox software package.
System for materials testing at static loading
Authors: Tsonev V , Kuzmanov N , Borisov B , Penkov K 
Published: October 2019

Abstract
This paper presents a newly developed system for mechanical testing at static loading. The separate modules of the system are described - tensile testing machine, grips, extensometers for axial end transverse deformations, electronic control system. The results obtained during tensile testing with the new system are given. The yield strength, the tensile strength, the elasticity modules and the Poisson’s ratio of general purpose steal S235JRC are determined.
Some aspects of the informational support of technological processes
Authors: Koleva S 
Published: October 2019

Abstract
The increase of the efficiency of technological processes during the various stages of product development, such as design and manufacture, is in direct connection with their informational support. In this paper are considered the state of the art of modern informational support of processes, and the methods of its realisation. On the basis of informational modelling of technological processes, are considered and analysed the capabilities of the suggested scientific approaches for the assurance of the parameters of its efficiency, including their evaluation. Established is the necessity of a new approach during the modelling of technological processes for parts manufacturing, which would enable to overcome the main problem of their development – the ambiguity of the values of the technological parameters and their influence on efficiency. In order to guarantee the efficiency of these processes, formulated are the tasks and approaches which are to be applied for developing a reliable and up-to-date informational system.
Qualitative analysis of oscillating magnetomechanical system
Authors: Todorov T S , Mitrev R P , Tudjarov B N , Nikolov R F 
Published: October 2019

Abstract
The paper deals with mathematical modelling and qualitative analysis of a dynamic system of the type mass-spring-permanent magnet. The mass of the system is suspended on the free end of a cantilever beam and oscillates in a magnetic field created by a permanent magnet. The the magnetic force is obtained using the finite element method and approximated by a function similar to the Coulomb’s Law. The dynamical model of the system is built on the basis of the Newton 2nd law. By means of qualitative analysis of a nonlinear differential equation, the bifurcation zones are determined. The phase portraits of the system are investigated depending on its bifurcation behaviour. Based on the performed analysis a method for dynamical synthesis of system parameters is proposed. Besides, some typical properties of the dynamical system are determined.
Business-Science-Education: a Collaboration for Competitive and Sustainable Growth of the Wine Industry
Authors: Angelova M , Georgiev P , Dimitrova G , Pastarmadzhieva D 
Published: October 2019

Abstract
Optimization of the collaboration “business-science-education” is a prerequisite for the increase of the competitiveness of the enterprises. The article introduces a scientific solution of a practical problem through the creation of a model for informal education of specialists in the wine industry. The presented models are a part of the Virtual Educational Space (VES) as a smart space, context-dependent, based on a script and a controlled infrastructure. The results of the approbation of the model prove its significance for the practical processes and the increase of the competency of the specialists in connection to the implementation of innovation. Particularly to the wine industry, the suggested model for informal education represents a specific innovation, which approbates the known “good practices” in the strategy “Lifelong Learning”.
Critical Thinking About Urban Studies Linked with Thermodynamic Terms
Authors: Bostanci Seda H. 
Published: October 2019

Abstract
The interaction of urban science with psychology, biology, ecology, and technology creates a rich diversity. Thermodynamics and information theory are among the methods of analysis used to understand urban systems. These methods have a variety of options, and their decision-making processes are complex. Definitions related to the concept of city vary depending on the approach of social science disciplines such as urban science, sociology, geography, economy and public administration. Geographic Information System (GIS) enables the creation of interactive maps of the urban system’s transformation processes. Thus, city maps have gained qualifications for the examination of the possible changes and future scenarios. The relationship between city and thermodynamics has been developed with implementations such as energy, sustainability, system approach, spatial analysis, aesthetic evaluation methodologies, urban growth, and urban models. The thermodynamic interpretation of implementations provides concrete data such as heat map of the cities, and energy potential. The interpretation of entropy at the intersection of thermodynamics and information theory gives different perspectives to the concepts such as coding, redefining aesthetics and urban growth. The studies which relates urban issues and entropy concept are very different in approach and content from each other. This situation has also created a ground for meaning shifts. The aim of this study is to critically discuss the methods, concepts, and theories of urban studies related to the thermodynamic terms. As a method, the studies on the approaches of the concepts of thermodynamics in urban planning and urban design will be evaluated with a literature review.
Development of QFD methodology
Authors: Klochkov Y , Gazizulina A , Ostapenko M 
Published: October 2019

Abstract
The production of elongated shaped charges is particularly dangerous (or in the language of ISO 9001 “special”) and difficult from the point of view of quality control, so it is necessary to pay special attention to the dynamics of customer requirements, the level of development of competitors in order to remain a competitive organization. The proposed work addresses the issues of determining the ways of product development based on the analysis of the dynamics of consumer requirements and the level of competition, a mechanism is shown to identify bottlenecks of products based on the results of the organization’s resource audits.
A conceptual framework of cost of safety model in infrastructure project based on work breakdown structure (wbs) to improve safety policy in indonesia
Authors: Fitriani R , Latief Y 
Published: October 2019

Abstract
The high accidents rate in infrastructure projects in Indonesia in the last 1 (one) year due to lack implementation of the Occupational Health and Safety Management System in its entire project. One of the key indicators that influence it is the safety cost allocation. Currently, there is no structured guidelines to prepare cost of safety that is in accordance with the conditions of infrastructure projects in Indonesia. The purpose of this study is to address this gap by conceptualizing cost of construction safety as a more structured model for construction safety improvement. A conceptual framework which is not only integrate construction project management theory and regulation in Indonesia, but also consider project scope, project duration, project location, hazard analysis, and safety program, is proposed. This conceptual paper contributes to the emerging literature on safety cost and produce a systematic model of safety costs by involving appropriate risk control, and considering applicable regulations.
Proposed SDI equations to improve the effectiveness in evaluating crack damage on the road pavement
Authors: Setiadji B H 
Published: October 2019

Abstract
Road pavement has a life-cycle, where the age of the road pavement starts from design to the end of service life, so that maintenance works are one of the most important stages. To enable carrying out maintenance works, a process of assessment of road conditions, both from structural and functional, is required. At present, one of the evaluations of the functional condition of the road is using surface distress index/SDI. The SDI method used today has a simple procedure and is easy to use. However, in the term of accuracy in estimating the functional condition, it will be seen that the SDI parameter is far from satisfying. In this study, an effort to increase the effectiveness of SDI parameters especially for crack damage was carried out. The improvement of SDI parameter was conducted by developing a non-linear equation for each type of crack damage based on the deduct value curve of the PCI method, with a coefficient of determination R2 of at least 0.99. The proposed SDI equations have been calibrated and produced an error less than 6.2%. A comparison between the value of the proposed and the existing SDI also was presented and the results showed that the similarities between the two SDI values were only 19.86%. The rest of the existing SDI value was under-estimate proposed SDI, but there was also an existing SDI value over-estimated proposed SDI, especially in the road segment which was only found one type of crack damage with low/medium severity and low density.
Statistical characterisation of expanded metal mesh strand, to propose a correlation between properties of parent material and finish product, EMM
Authors: Solanki Jaydeepsingh , Ghosh Siddhartha 
Published: October 2019

Abstract
The use of steel plate shear walls (SPSW) for the design of structures under low seismic intensity results in very thin infill SPSW panels. Construction of such structures is infeasible, mainly due to the difficulty in connecting the infill to the boundary members. Thus, a designer is compelled to use a thicker infill section which in turn leads to heavier boundary elements. In order to overcome this constraint of design, a new type of infill panel using Expanded Metal Mesh (EMM) is studied as an alternative in place of a solid infill SPSW panel. Available codes on expanded metal mesh specify requirements of workmanship, quality control, etc. but neither recommend the strength of expanded metal mesh as a whole nor the strength of its components. Thus, it is necessary to perform extensive tests to extract the strength of expanded metal mesh as a whole in terms of the strength of its components and to come out with a correlation between the strength of the parent material (material from which EMM is manufactured) and that of the finished product (EMM). This paper a) presents the statistical characterization of EMM strands, b) recommends nominal design values for basic mechanical properties and c) proposes the correlation between the strength of the parent material and that of EMM strand.
Performance of GFRP bar anchored PBO-FRCM composite on one-way RC slabs under flexure
Authors: Grzymski F , Trapko T , Musiał M 
Published: October 2019

Abstract
The use of FRCM (Fabric Reinforced Cementitious Matrix) composites for reinforced concrete elements structural strengthening is gaining increased popularity. This causes the need to better understand the work of the material and to propose an effective way of using it. The mechanical behaviour of FRCM composites related to their ductility and tendency to debond or delaminate causes that its typical use, known from the older FRP (Fibre Reinforced Polymers) technology, is inefficient, that was the reason for the anchoring concept. This paper presents the results of the research based on three slab type elements, two of which were strengthened with one layer of PBO-FRCM composite with GFRP rebar anchorage of the composite mesh ends. The most important mechanical properties of the elements were measured and analysed.
Lateral displacement capacity of reinforced concrete elements damaged by corrosion
Authors: Imperatore S , Kioumarsi M 
Published: October 2019

Abstract
The aim of this work is to evaluate the influence of corrosion on the lateral displacement capacity and on the global ductility of reinforced concrete (RC) elements, using finite element (FE) analysis. The corrosive phenomenon is simulated accounting for its consequences on the reinforcing bars (variation of the steel geometry and mechanical properties), on the concrete (cracking) and at the interface (variation of the bond-slip behaviour). The parametric analysis, using numerical models, highlights how corrosion significantly changes the structural performance of the element in terms of deformability.
Evaluation of performance of foam produced with different methodologies for use in foam concrete production
Authors: Sahu S S , Gandhi I S R 
Published: October 2019

Abstract
For the production of foam concrete which finds applications in many areas, generally as a function of its relatively lightweight, the use of stable and quality foam is the key requirement. However, the literature available on the influence of characteristics of foaming agent and foam on the properties of foam concrete are rather limited. Hence a more systematic research is needed in this direction. The present work focuses on the relative performance evaluation of foam (initial foam density, foam stability, viscosity of surfactant solution and bubble size) using a typical synthetic surfactant and additive using two different foam production methodologies namely stirrer and foam generator. Comparative studies on foam production methods indicated that foam produced based on compressed air method (foam generator) is of better quality with lesser liquid fraction and drainage compared to that of foam produced with stirrer. Also studies have proved that there is a strong relationship between viscosity of surfactant solution, initial foam density, foam stability and bubble microstructure.
New texture with black grey color of fired clay wall tiles produced from rice husk ash, brown glass cullet, and local plastic clay
Authors: Ubolrat W , Duangkamol P 
Published: October 2019

Abstract
Developing fired clay wall tiles by valorising waste materials and local plastic clay was objective of this study. Rice husk and glass cullet are waste materials which had been selected. They were mixed with local plastic clay of Angthong province in Thailand. All materials used were characterized their composition by X-ray Fluorescence technique. Specimens had been prepared by dry pressing and then fired at 950°C and 1050°C. Physical properties, bending strength and water absorption, were tested and compared with Thai Industrial Standard (TIS 2508-2555). In addition, X-ray Diffraction technique and Scanning Electron Microscope were used to analyse microstructure of selected specimens. The results of this experiment shows that utilizing of 60-70% brown glass cullet, 10-30% rice husk ash fired at 950° C is feasible to produce wall tiles for commercial. It provides high bending strength and low water absorption and can pass the TIS 2508-2555. Furthermore, it provides new texture with black grey colour of wall tiles.
Milling of Precision Gear-shaped Parts
Authors: Wu Yanqing , Chen Jinghua 
Published: October 2019

Abstract
Precision gear-shaped part is an important part of a new type reducer. Due to its high overall hardness, precise design requirements, and semi-closed processing area, the precision machining technology based on UG is studied by using UG software in view of this processing characteristics of precision gear-shaped parts, including high resistance in X and Y direction, difficulty in chip removal, easy damage of cutter, and difficulty in workpiece quality. It solves the difficulties in cutting tool damage and precision control in precision gear parts machining, and provides reference value for similar parts machining.