bluuebunny/crossref_metadata_2025_split huggingface dataset:
An extension of golden section algorithm for n-variable functions with MATLAB code
Authors: Sandhya Rani G , Jayan Sarada , Nagaraja K V 
Published: December 2019

Abstract
Golden section search method is one of the fastest direct search algorithms to solve single variable optimization problems, in which the search space is reduced from [a, b] to [0,1]. This paper describes an extended golden section search method in order to find the minimum of an n-variable function by transforming its n-dimensional cubic search space to the zero-one n-dimensional cube. The paper also provides a MATLAB code for two-dimensional and three-dimensional golden section search algorithms for a zero-one n-dimensional cube. Numerical results for some benchmark functions up to five dimensions and a comparison of the proposed algorithm with the Neldor Mead Simplex Algorithm is also provided.
Experimental Analysis of a Solar Still Coupled with Heat Pipe, Evacuated Tubes and Compound Parabolic Concentrators
Authors: Vivek G , Ratheesh R , Mukesh R , Sajan G , Haritha R , Yashaswini C , Kotebavi Vinod 
Published: December 2019

Abstract
Rural enclosures usually present themselves with poor access to clean and practicable water, despite this drawback, they still do receive a generous amount of sunlight. This sunlight can be used to purify the water. In this work, a pyramid type solar still is built and is coupled with heat pipe placed inside the evacuated tubes. To increase the area of solar energy collection compound parabolic concentrators (CPC) are used. To increase the solar radiation absorption, coating is done on the inner side of the basin and black stones are placed inside the basin. Using tap water as feed, the performance analysis is analyzed under three modes of operation, (i) Still alone, (ii) Still with heat-pipe and evacuated tubes and (iii) Still with Heat-pipe, evacuated tubes and Compound Parabolic Concentrators. The overall thermal efficiencies for the three above mentioned modes of operations are observed to be 23.14%, 23.48% and 23.87% respectively. The salt content is reduced by 98.3%.
Comparison Study on Fuel Briquettes Made of Eco-Friendly Materials for Alternate Source of Energy
Authors: Vivek C P , Rochak P V , Suresh Pillai Sagar , Raghavendra Ravi Kiran K 
Published: December 2019

Abstract
The access to energy is necessary to sustain human life and to achieve overall economic, social and environmental aspects of human development. Always there is a shortage of energy and hence there is constant need to search for alternative form of energy, which is new and totally different form from conventional traditional fuel types. The worldwide continued utilization of fossil fuels has in turn increased the environmental pollution which has become a threat to human kind. For the production of energy the biomass of plants can be used as an alternative source. There is a lot of demand for energy since many years and the biodegradable briquettes are frequently used as an alternate source of energy for small industries and domestic cooking applications. Normally for producing briquettes we follow a process called densification where the waste biomass is densified. This work is a step to deal with energy crisis and effective utilization of agricultural wastes. In this study manual densification of rice husk, saw dust, and coconut shell powder were tested with three different binding agents; dry cow dung, wheat flour, and paper pulp. Briquettes are made using different biodegradable materials and tests were conducted to compare the calorific value of the briquette. Coconut shell powder has been added along with saw dust and other binders which has increased the calorific value of the briquette significantly. It can be stated that briquettes made using the correct mixture of rice husk, saw dust, binders and coconut shell powder possibly will be able to address the energy crisis and environmental issues by increasing the calorific value of the briquettes.
Assessment of atomized water injection in the intake manifold of a heavy duty diesel engine for NOx reduction potential
Authors: Sandeep S , Senthil Kumar D , Krishnan S , Pandey S K 
Published: December 2019

Abstract
Diesel engines, since many years, have found their own market with their robustness, low manufacturing cost and high efficiency. Although diesel engines have so many advantages, they are being blamed for their high pollutant emissions. Main pollutants from diesel engine are NOx, CO, CO2, HC and PM. Out of these pollutants, CO, CO2, HC, and PM can be reduced using some after treatment system in the tail pipe. But NOx needs to be addressed within the cylinder which would reduce the cost of after treatment system. Since NOx formation is the function of high combustion temperature, this temperature should be reduced by some means. In this study, atomized water injection system was employed to reduce in-cylinder combustion temperature there by reducing NOx formation. Here, water was injected into the air-intake pipe along with the EGR stream. 1-D simulation model of the study engine was created using AVL BOOST. Three full load operating points were considered and simulations were performed for 2.8mg, 4mg and 6mg of water injection at each operating points. Performance and emission parameters were then validated with the test data. Results showed that increase in water injection quantity reduces NOx emission but increases the smoke value. 2.8mg of water injection was chosen to be optimum, which reduces about 90°C of in-cylinder temperature, 8-10% of NOx reduction and increases smoke by about 20% from base value.
Ultrasonic characterization of compatible chemicals on waste materials for pre synthesis of microwave absorbing material
Authors: Mishra G R , Nath G , Paikaray R 
Published: December 2019

Abstract
The efficiency of all microwaves absorbing material (MAM)/radar absorbing material (RAM) is purely depend on its composition particularly organic material like carbon and oxygen. The most of the bio waste are rich in cellulose which contains carbon as main component. The treatment of each bio waste is a vital step before fabrication of biomaterial for different application. The present work describes the ultrasonic analysis of treatment of benzyl chloride with aqueous cellulose. The variation of ultrasonic velocity and other acoustic parameters like compressibility and intermolecular free length with increasing concentration of benzyl chloride suggest possible intermolecular interactions. The presences of such interactions are well explained in terms of morphological changes in waste bio material like rice husk. The presence many reaction sites on the treated rice husk makes suitability for synthesis of biomaterial. The SEM of treated rice husk gives significance explanation for absorption of incident microwave radiation incident on the bio material prepared from this waste.
Research of the driven capacity of pushers with rubber pads for oil equipment
Authors: Asheichik Anatoly , Samsonenko Arkadiy 
Published: December 2019

Abstract
The paper discusses the choice of the optimal shape and dimensions of pushers with rubber pads for injection heads intended for pushing cables into an oil well. To optimize the size and shape of the pushers, the finite element method was used. The obtained results were checked experimentally on a specially designed stand. The results of experiments on the evaluation of a number of rubber compositions according to their tribological properties and tractive capacity are presented.
Investigation of cracked rotor analytically and numerically
Authors: Abed Salam Ahmed , Bahrami Mohammad Reza , Thijel Jassim Farij 
Published: December 2019

Abstract
The aim of this paper is analyzing the cracked Jeffcott with an offset disk rotor system. Mathematical modeling of a Jeffcott rotor with a crack while the depths of crack changes allows analyzing the dynamic behavior of the rotor. The effect of changing speeds has been investigated on the dynamic parameters of journal bearings (stiffness and damping) and then on Sommerfeld number. The relation of the dynamic response with the static response of rotor with cracks (dynamic load factor DLF) and with the ratio of depth crack to radius rotor has been found. The results have obtained analytically and numerically by using MATLAB and ANSYS, respectively. The results show when crack’s depths increase the DLF increases and reach to maximum when a/R = 0.8.
Perspectives of application of nanostructured composites for new diagnostic systems for transcranial magnetic stimulation
Authors: Baryshev G , Bozhko Y , Kondrateva A , Konashenkova N 
Published: December 2019

Abstract
The paper presents a study of the prospects for using nanostructured composites for new promising diagnostic systems of transcranial magnetic stimulation. A principle of operation of a new device of transcranial magnetic stimulation using nanostructured composites is proposed. The system wires Cu-Nb are considered as an example of nanostructured composites. The analysis was carried out from the point of view of electrophysical, thermophysical and strength properties. According to the study, conclusions were made about the prospects for using materials of this class as a functional material for a stimulating probe of a portable device of transcranial magnetic stimulation.
Increasing the efficiency of prefabricated drills and the strength of replaceable cutting inserts
Authors: Chernyshov M.O. 
Published: December 2019

Abstract
The results of calculating the stress-strain state in replaceable cutting inserts of assembly tools are presented, using the finite element method. In the calculation, the mechanical characteristics of the tool hard alloy were specified, the conditions for the interaction of the replaceable cutting inserts with the drill body, the fastener elements, the force loading was replaced by the specification of the boundary conditions. As a result, a number of basic sizes of replaceable cutting inserts were built, with different geometric parameters. A system of equations for the calculation of cutting forces for drilling with prefabricated drills of different types has been developed. To determine the influence of the shape of the plates on the stressed state, replaceable cutting inserts of different shapes were studied: trihedral, rhombic, square. A new form of replaceable high-strength cutting inserts with an enlarged angle has been developed. To improve performance, the auxiliary cutting edge of the replaceable cutting insert is made in the form of an arc inscribed in a quarter of the length of the side of the polyhedron, while the radius of the curved cutting edge is equal to half the length of the side of the polyhedron.
Algorithm for computer-aided design of single-line diagrams of 35-220 kV switchgear with one working busbar system using “ORU CAD”
Authors: Varganova A. V. , Panova E. A. 
Published: December 2019

Abstract
Designing distribution systems for substations and power plants is a complex process that requires qualification, attention, knowledge of regulatory and technical documentation and takes a lot of time to perform the same type of work. In addition, an integral part of the preparation and delivery of any project is the development of project documentation, including an explanatory note to the project, specifications and, of course, drawings with single-line diagrams, plans, layout schemes, etc. The paper proposes an algorithm for automated design of single-line circuits of open switchgear 35-220 kV with bus bars, implemented in the original software “ORU CAD”. The study was carried out with the financial support of the Russian Foundation for Basic Research in the framework of the research project No. 18-37-00115.
Problems and perspectives of sustainable marketing development on the Russian food market
Authors: Bozhuk S.G. , Evdokimov K.V. , Maslova T.D. , Pletneva N.A. 
Published: December 2019

Abstract
Nowadays the modern market of food retail is going through a transition period. Consumers tend, on the one hand, to reasonable savings, on the other hand, to meet the need for quality products. Retailers have a difficult task – to follow the concept of sustainable development, while maintaining profitability. The authors of this article, using the methods of content analysis of consumer reviews, observation, online survey, assess the implementation of environmental programs by representatives of retail chains, identify consumer interest in the concept of Zero Waste, and evaluate the satisfaction of the product retail on key attributes.
Vibrations in engineering systems
Authors: Manakova O.S. , Mayorov M.A. , Sidorov A.V. 
Published: December 2019

Abstract
The value of vibration, defined as the oscillatory phenomenon of a solid subjected to the action of force, appeared relatively recently. In fact, mechanical vibration became real only after the industrial revolution. Mechanical oscillatory phenomena, for example, due to working equipment and train movement, began to emerge only by the second half of the eighteenth century. The intensive use of new machines and mechanisms suddenly filled the world, until then, quiet and silent, with new intense noises and vibrations. Different ways of calculating the estimated oscillations of engineering structures, methods of reducing vibrations to the level allowed or their complete isolation, determine the purpose and main problems of the applied theory of mechanical vibrations. In engineering practice, we are almost always interested in predicting the response of a structure or mechanical system to an external effect. For example, we may need to predict the response of a bridge or high-rise building to wind loads, earthquakes, or ground motion. In mechanics and construction, resonant catastrophe describes the destruction of a building or a technical mechanism by induced vibrations at the resonant frequency of a system, which causes its oscillation. Periodic excitation optimally transfers vibration energy to the system and stores it there. Because of this repeated and additional energy input, the system sways more and more until its load limit is exceeded. Frequent reason for these disasters were periodic oscillations of bridges. Periodic fluctuations can be described as a body movement that regularly goes through an equilibrium position. Any oscillatory movement of a mechanical system relative to its equilibrium position is called vibration.
Risk management technique for the QMS processes at the university
Authors: Aleksandrova T.A. , Novikova V.N. 
Published: December 2019

Abstract
This paper considers a risk management technique designed for educational performance of the university, because focus on risk management has become one of the ultimate principles of the new version of ISO 9001. The conclusion of the article: it is makes good sense managing both internal and external risks of the educational performance of the university.
Quality function deployment as a tool of risk management at early stages of an unmanned aircraft design
Authors: Filippova Tatyana S 
Published: December 2019

Abstract
This paper is devoted to quality management of a high-tech product at the design stage. The object of study is a multipurpose High Altitude Long Endurance Unmanned Aerial Vehicle (HALE UAV). Quality management is supposed to be implemented through such a tool as quality function deployment (QFD). The article provides a detailed description of this method and gives an example of its use at the stage of conceptual design of a HALE UAV.
Modeling of added value of high-tech industries based on aluminium
Authors: Vasilyeva Z.A. , Moskvina A.V. , Filimonenko I.V. , Likhacheva T.P. 
Published: December 2019

Abstract
The article proposes a model for assessing the efficiency of the cluster to predict the potential value and structure of value added for promising products and technological chains of their production. The ratio of added value as a result of the cluster operation to the volume of revenue from sales was chosen as the resulting indicator. The choice is due to the possibility of using this ratio as a multiplier of value added. Independent groups of factors - internal (depreciation; payroll; profit) and external market factors determining the upper limit of value added formation (the scale of the national market and the market share controlled by the cluster). Presents major phases in the simulation: predict the relative resultant figure to 2020 based on extrapolating actual values for 2010-2016 for the structure of value added elements (amortization, payroll; profit) and stages of the technological chain of the cluster – production of alumina, production of aluminum and alloys, production of intermediate products, production of final products; assessment of the potential value and structure of value added from the production of promising products in 2020 A mechanism for assessing changes in the value added as a result of management of the value of internal factors at each stage of the technological chain is developed, which allows to optimize management decisions and create alternative scenarios for increasing the added value in the technological chain of the cluster. Testing of the proposed model to estimate the value and structure of value added by types of promising products in the elements of the cluster “Technological valley” in accordance with production scenarios is presented.
Depreciation policy and depreciation fund as indicators of improving equipment efficiency
Authors: Tomshinskaya I N , Syrovatskiy Y Yu 
Published: December 2019

Abstract
Each promising company is required to develop a depreciation policy as part of its investment policy. One aspect of the latter is the depreciation fund. This term is introduced by the authors as one of the tools for improving the efficiency of company management. Depreciation fund assets will be used for the reproduction of fixed assets. Modern accounting standards do not contain these tools, which may have negative consequences.
Quality management during the developing and implementation of the project of integration of automated information systems
Authors: Novikova T B , Bobrova I I , Trofimov E G 
Published: December 2019

Abstract
This article consider the activities of the company engaged in the extraction and transportation of natural gas, in which, today, there is a large fleet of automobile and special equipment and departmental gas stations. The activity of the enterprise is successfully implemented through its existing technical infrastructure. However, during a pre-project survey, the customer identified business processes that need automation, namely, the transfer of information about refueling to waybills. This solution will reduce the waybills processing time and eliminate the inconsistencies about refueling with the data of the existing AIS. This article considers the implementation of only one task: the development of an algorithm for transmitting data on gas stations. The project successfully passed all the necessary tests, after which an act of acceptance of integrated systems into operation was drawn up.
Information support for trade with the use of a conversion funnel
Authors: Sergeev S , Kirillova T 
Published: December 2019

Abstract
A contemporary tendency of providing commercial activity with ways of digital communication is related to solving the problem of online trade forecasting with the help of customers’ feedback. At the same time introduction of e-commerce and wide exploitation of information technologies led to transformation of traditional sales funnel. This work is devoted to the research of the conversion funnel as the next step of leading indicators system’s implementation to the trade activity. The results of elaborated formalized mathematical model are stated, an example of calculation is set. The results of research are aimed to provide managers of commercial enterprises with a convenient method of sales analysis and operating activity’s organization.
Ranking assessment of the competitiveness of agricultural universities
Authors: Klochkov Y. , Akri E. , Samorukov V. , Evdokimov K. 
Published: December 2019

Abstract
Ranking is one of the tools for assessing the competitiveness of universities. There are regional and world rankings of agricultural universities and agricultural sciences. The QS World University Rankings is one of the most influential global university rankings. Only universities that offer all levels of education are included in the QS rating: bachelor’s, master’s and doctoral degrees (or postgraduate studies in Russian practice). At the same time, the university should comprise at least two of the five areas of knowledge: the humanities and arts; engineering and technical sciences; natural sciences; medicine and life sciences; social sciences and management. Evaluation of the best universities in the world in the ranking is based on six criteria: academic reputation (an indicator based on a survey of professors and teachers); reputation among employers (invitations to participate in the survey are sent to companies of all industries ranging in size from one hundred employees and above); the ratio of teaching staff to the number of students (the source of this data is information provided by the universities themselves); citation index (the ratio of the number of published scientific publications to the number of teachers and researchers for whom the university is the main place of work for at least one semester); the proportion of foreign students (reflects the degree of attractiveness of an educational institution in the international arena); the proportion of foreign teachers and scientists (employees who have worked for at least three months, taking into account the percentage of the rate, are taken into account). The article analyzes the methodology of the QS World University Rankings by Subject: Agriculture & Forestry and Veterinary Science. The author gives an assessment of the best universities according to the rating agency QS. The results of this study can be used by top management of agricultural universities in the designing of growth strategy.
Use of the logical-statistical model as a procedure for assessing occupational risks in the OSH management
Authors: Kaverzneva T. , Rumyantseva N. , Uljanov A. , Belina N. 
Published: December 2019

Abstract
There is suggested an analytical approach to occupational safety management based on the use of a logico-statistical model for assessing occupational risks, which allows processing large sets of data for instrumental measurements of labor conditions. The results of processing information on the assessment of working conditions using a logico-statistical model allow us to predict the levels of occupational risks at various workplaces, which makes it possible to develop optimal management decisions for preserving the life and health of workers in enterprises. The prospect of using data mining methods in the tasks of OSH management at the enterprise opens up the possibility of creating decision-making mechanisms that take into considiration the dynamism of the working environment and make it possible to increase the validity of the choice of the priority of labor protection measures.