bluuebunny/crossref_metadata_2025 huggingface dataset:
LINEAR ELECTRIC MOTOR WITH PM EXCITATION FOR A FREIGHT MAGNETOLEVITATION PLATFORM
Authors: ADALEV Alexei S , KUCHINSKII Vladimir G
Published: March 2018

The paper presents the design of a traction electric drive based on a linear synchronous motor with permanent magnets (PM) excitation. The electric drive is a part of the demonstration mock-up and is intended for the linear movement of a freight platform that is suspended in the air by means of the magnetic field. The drive performs a smooth movement of the platform with a required speed, platform stop, and changing of the direction of the movement. The motor inductor with permanent magnets is fixed on the platform whereas the motor stator is placed on the ground being supplied with power through а semiconductor converter. The stator consists of the independent modules that are sequentially connected to the converter as the inductor moves. Commutation of the modules and commutation the windings inside the active module is performed by the signals from some optical sensors attached to the inductor. Modular design of the motor stator and sectional feeding of its windings from the same converter allow to create a levitation mock-up with an arbitrary length of the motion path. At that all the technical solutions adopted in the drive design are directed to reducing of the drive production cost.
SYNTHESIS AND RESEARCH OF SUPERHYDROPHOBIC, ANTI-ICING HYBRID COATINS
Authors: SHILOVA Olga Alekseevna , TSVETKOVA Irina Nikolaevna , KRASIL'NIKOVA Larisa Nikolaevna , LADILINA Elena Yur'evna , LYUBOVA Tatyana S , KRUCHININA Irina Yur'evna
Published: March 2018

An approach to the formation of anti-icing nanostructured coatings for use on metal to protect against freezing and corrosion of various metal structures was presented in this work. A method for preparing superhydrophobic coatings using the sol-gel compositions with fluorinated dialkoxysilanes and hydrophobized filler was developed. Synthesized methyltriethoxysilane sols were used for film forming compositions by mixing with the fluorine-containing powder and hydrophobizing aerosil. The hydrophobicity and adhesion properties were investigate by physical and chemical methods. The method of digital image processing sedentary drops on the surface was used to study the dynamics of change in contact angles. The adhesion of the coating to the substrate was evaluated by method of a lattice cut and made up 1 point. Determination of physical properties by measuring the contact angles and roll-off of water drops from the surface showed that the coatings have a high contact angle (over 150 °), and the sliding angle less than 10 degrees. That could confirm the superhydrophobicity and assume anti-freezing properties. It was revealed that aerosil has a significant impact to hydrophobic and superhydrophobic properties.
Cargo-Carrying Transport Platform Based on Magnetic Levitation: Experience of creation
Authors: Zaitsev Anatoly A
Published: March 2018

The North of Russia in the short term remains not captured high-speed movement. Such situation can be rectified by application magnetic and levitation technologies, and so string trestle technologies. However, the careful ecological and economic reasoning, and also adaptation of constructive elements and technologies to North conditions has to precede use of such technologies. For development of the railway high-speed communication it is necessary to create rings of the high-speed movement. Thus the cellular network structure which is much more effective existing treelike, taking place in the Komi Republic, the Arkhangelsk and Murmansk areas will be initially formed. Container message of trestle type Ivdel - Indiga about 1100 km long can become possible application of magnetic and levitation technology in the north of Russia. From Ivdel the container highway can be continued in the southern direction to border with China. At the organization of the high-speed movement it is necessary to divide passenger and cargo transport streams. If to execute passenger modules in the form of individual vehicles (four-five-seater), elements of infrastructure will be less expensive. The sizes and loading capacity of containers for high-speed transportations can be also reduced. Developers of string transport systems actively study questions of design of transport modules of various mission, creation of low-cost transport infrastructure. In the conditions of the North of Russia development of transport system which would combine advantages of magnetic and levitation and string transport is of interest. Stability of such system can be provided when using effect of «a magnetic potential hole». Implementation of large transport projects of the high-speed movement in the Russian Federation can promote strengthening international cooperation and be carried out on its basis.
Experimental studies of charge of non-superconductive magnetic energy storage
Authors: Nikitin Victor V , Sereda Gennady E , Sereda Eugene G , Sereda Alexander G
Published: March 2018

One of the urgent tasks of railway transport development connected with the problem of power saving according to “The strategic directions of scientific and technical development of OAO RZD for the period of up to 2015” is a wide use of power-intensive energy storages in the main technological processes of power consumption and energy generation. Owing to the progress in the field of manufacturing high temperature superconductors of the second generation, the use of superconducting magnetic energy storages (SMES) is the most promising. A feature of induction coils, which are inductive energy storage as receivers and sources, according to the laws of commutation is inability to change current quickly through induction. This makes difficult to connect superconducting magnet directly to energy sources and receivers of traditional performance. This means that SMES require special charging circuits. The most viable is to charge coil via intermediate capacitor (capacitance storage (CS)). In this case, coil charge will be on phased basis, taking character of pulse pump of energy. The advantages of this modification are that energy source released from handling large, slowly varying currents, resulting in possibility to flexibly adjust magnitude and duration of coil charge depending on the required charging mode. To verify that the scheme of charging inductive energy storage via intermediate capacitor non-superconductive magnetic energy storage which, unlike superconductive has a finite resistance, has been used. The authors confirmed working capacity of charging scheme for inductive energy storage via intermediate capacitor on phased basis. It is noted that maximum current value during charge of CS increases with capacitance value of the intermediate storage and with decreasing series included with CS inductance.
Impossibility of superconductivity electric flow
Authors: Fedyukin V K
Published: March 2018

The solution of an old and urgent scientific and technical problem of superconductivity of electric current is proposed. Discrepancies to the facts and internal contradictions of a hypothesis of superconductivity of electric current by bodies, in the conditions of cryogenic temperatures are revealed. The new (alternate) comprehension of an essence and the adequate theory of the phenomenon which is inaccurately called by the low-temperature superconductivity of electric current without resistance is formulated. The analysis of an Ohm's law and its restrictions proves impossibility of emergence of superconductivity. It is claimed that when cooling the conductor its resistance increases, but does not decrease. When overcooling the conductor there is an isolation of electric current by it. The two-current model and the beginnings of the corresponding theory of an electrical conductivity are offered. It is shown that according to the actual two-current theory of distribution (current) of electric energy on the conductor, superconductivity cannot be. The same conclusion is proved by the law of Joule-Lenz and the facts of increase in resistance from action on the conductor of an external magnetic field and decrease of temperature of the conductor. It is proved that the physical nature of resistance consists in counteraction of an external electromagnetic field (electricity) to the movement on the conductor from the diamagnetic field self-induced in it. It is claimed that at deep overcooling the diamagnetization of the conductor becomes more magnetic field of electricity and the conductor turns into the superdiamagnetic electroisolation center (dielectric). Replacement of the inaccurate doctrine about superconductivity of electricity on long ago the alternate and most reasonable theory of a cold superdiamagnetization of substances offered by the author of this article allows to solve many problems of practical use of the phenomenon of a superdiamagnetization during creation of new processes and perspective technique of the future.
Auxiliary power supply systems for high speed maglev vehicles with linear synchronous traction motors
Authors: Gulin S A , Nikitin V V , Sereda E G , Sereda G E
Published: March 2018

Introduction. In linear traction drives of high speed vehicles moving with velocities about 350 - 450 km/h it is expedient to use synchronous motors with stator winding located on track structure and constant magnetic field sources (permanent magnets, superconducting windings or bulk superconductors) located on the vehicle. Such high speed traction system does not require the moving contact for its power supply and it means a considerable advantage of system. Lack of a moving contact on the vehicle involves also the use of contactless system for auxiliary power supply. Purpose. The purpose of the paper is to analyze the versions of contactless auxiliary energy consumers power supply of high speed maglev vehicles with synchronous traction motors. Method. Weight, size and energy parameters of maglev vehicles power supply sources for auxiliary consumers are discussed and their areas of use are analyzed. Results. For contactless power supply of auxiliary energy consumers of maglev vehicles with electrodynamic suspension it is expedient to use linear induction generators and rechargeable batteries. For maglev vehicles with electromagnetic suspension it is expedient to use linear generators, linear transformers and rechargeable batteries. Practical significance. Results may be used for creation of national commercial high speed maglev transport. Conclusion. The choice of combination of power supply sources for auxiliary consumers is determined by vehicle magnetic suspension type. For vehicles with electromagnetic suspension it is expedient to use linear transformers, linear induction generators and rechargeable batteries. For vehicles with electrodynamic suspension use superconducting magnetic systems it is expedient to use linear generators and rechargeable batteries.
Determination of transient resistance low-current elektric contacts in dusty conditions the contact surfaces
Authors: Lyuminarskaja E S
Published: March 2018

Introduction. Now on transport, in automotive, aviation, space, household and other vehicles the tiny mechanically managed switches are widely used. The small weight and small dimensions belong to their benefits. However bad contact connection can lead to failure of devices on which work of all difficult technique depends. In household appliances it will not lead to serious problems, but for transport failure of contact system can lead to catastrophic consequences. The most important indicator of reliability of microswitches is non-failure operation of work. Failures of microswitches arise because of the thermal, electric, mechanical and chemical phenomena in a transitional zone of electric contacts. Now big distribution was gained by low-current contacts. Refusals and failures in such contacts appear generally because of hit in intercontact space of dust and other pollution, formation of the films which are not collapsing in case of short circuit of contacts, sudden change of force of pressing of contacts because of breakdown of an elastic element or an expansion spring. In article the mathematical model of contact systems in case of failure on the example of modern electronic microswitches of rod type is provided. Purpose. Creation of mathematical model of contact systems at failure on the example of modern electronic microswitches of rod type, research of operation of microswitches in actual practice operation. Methodology. Theoretical methods of research with use of personal electronic computer were applied to achievement of an effective objective. The theory of contact interaction of rough surfaces, the theory of electric contacts, methods of linear algebra, etc. have been used. The program complexes Mathcad, ANSYS were used. In case of pilot studies methods of mathematical statistics were applied. Results. In article the technique of determination of transitional resistance of low-current electric contacts considering possible dust content of contact surfaces, formation of films on surfaces of contacts and change of parameters of a roughness of contact surfaces as a result of plastic deformations is offered. For the studied contacts dependence of probability of failure on concentration of particles of dust is received. Practical importance. The technique described in article allows to determine the transitional resistance of electric contacts both during the normal work, and at failure. Conclusion. Development of mathematical models of contacts at failure gives the chance to estimate reliability of connections in actual practice of work, to choose key parameters of switching elements taking into account possible pollution, and also to develop new and to specify the available techniques of detection of failures.
Perspectives of practical realization of the transport system «Monojet»
Authors: Milovanova Evgeniya A , Lyubchenko Irina A , Milovanov Alexei I
Published: March 2018

As transport system «Monojet» includes design ideas in the field of development of over ground suspended transport systems it will allow: - to master effectively vital space of Siberia, the Far East and North of the country; - to strengthen defence potential of the country: to create the network of defence objects connected by the transport system including high speed and lifting mobile means of military technique and troops delivery; - to revive native aircraft vehicles which are not in operation now and to stimulate the building of native civil aircraft construction; - to create possibilities for innovations in the field of science and technique; to ensure technological progress in order to solve the import replacing tasks; - to change in the world public opinion the reputation of the country as supplier of raw material proposing transport services ( to counterbalance, for example, Chinese «Silk Road») and new transport means for civil purposes; - to contribute to the growth and strengthening of patriotism and to provide the rising generation with fair working activity in the future by stimulating motivation of the youth technical creation.
Creating a magnetogravitational high-speed passenger line "Adler-Kislovodsk-Mineralnie vody"
Authors: Zaytsev Anatoly A , Troitskiy Pavel S
Published: March 2018

The article discusses the idea of creating magnetogravitational high-speed railway (MSM) for passenger traffic on the route "Adler - Kislovodsk - Mineralnie Vody". Introduction. MSM linking the main resorts of the North Caucasus will have an agglomeration effect on their development by bringing more tourists, will create a market of transportations in between these recreational facilities, which are now essentially absent. Analysis: With the appearance of the line MVSM 5 disparate resorts - Sochi, KVM, Arkhyz, Elbrus, Dombay - will become a major mixed-use resort cluster offers Spa services, ski programs and a seaside holiday. The cluster will have 2 of the airport of Sochi and Mineral Waters associated MSM, marine station, and the lines of the existing railway. The numbers of annual tourist arrivals in the structure of passenger traffic, investment costs and cost of travel are the most influencing payback. The project itself MVSM designed for tourists. Therefore, necessary deep pricing policy on tariffs for transportations on the line. In the first two years of operation of the highway in the financial model includes the cost of travel along the route 1 end in the amount of 1000 rubles. For the average family of three people a day excursion from Adler to Anapa, in particular, will cost 6000 RUB. Results: The necessity of using magnetogravitational technology on this high speed line due to the difficult mountainous terrain of the route, Maglev's ability to overcome steep slopes, turns with smaller radius curves in comparison with the technology "wheel-rail". As well as a lower negative impact on the nature of the Great Caucasus nature reserve. Conclusions: Formulated the main idea associated with the construction of high speed railway. Given economic evaluation of the effectiveness of the proposed project
Development of new technologies in tunneling In hard rock
Authors: Kamanin YUrij Nikolaevich , Ushakov Leonid Semenovich
Published: March 2018

The article talked about planetary executive body of miner combine. Introduction: Doing work on the sinking of the strong rock is always associated with huge energy consumption. In particular due to the fact that in most modern roadheader destruction produced by cutting. A cutting rocks process is very energy-intensive and demanding to the quality of the cutting tool. Due to the nature of this method combines must have a very large mass and dimensions. These shortcomings are not critical during the passage of the long straight tunnel. But for sinking short process areas required technological machine considerably smaller dimensions. Such an instrument can be a roadheader with planetary shock the shearing executive body. Objective: Development of miner combine the concept of planetary shock the shearing executive body. Method: In order to achieve this goal have been used such scientific methods as analysis and synthesis, generalization, analogy, comparison, system approach. The analytical part of the work was carried out by examining the kinematics of the executive bodies for further optimization of their trajectories by SQP method. Results: 1. Describe the basic structure of the planetary shock-shear body heading machine; 2. a study of the kinematics of the executive bodies; 3. The obtained optimal values of some parameters of planetary impact-shear body. Conclusion: As a result of the research has been the necessity to develop compact tunneling machines, based on the destruction of rock shock-mechanical process that allows point-and, at the same time, uniformly release the impact energy across the bottom surface. For uniform load distribution on the surface to be treated the optimum rotational speed of the executive bodies of the combine were calculated (SQP method). Presented article is a starting point for further development of the tunneling machines with planetary shock the shearing executive body.
Economic features of freight maglev transport
Authors: Smirnov S A , Smirnova O Yu
Published: March 2018

In the article considered the implementations of magnetic levitation technology (maglev) in the world, evaluated the advantages of implementation the maglev for all types of transportation. Introduction: Freight maglev transport is not implemented widely in the world transportation market yet. The most projects in the area of magnetic levitation are focused on passenger transportation. European, Asian and American specialists research, develop and implement technologies, which allow passenger transportation at highspeed, higherspeed and urban lines. Excellent operation and economics characteristics allow maglev to compete with railway transport in all areas: from highspeed to urban. Analysis: There is the evidence that freight maglev has an opportunity to change the transport logistics market radically in the nearest future. We consider the following approaches to provide it. The first, and main, approach is supposed growth of commodities circulation between Western Europe and South East Asian countries. It requires the stable transport corridor, like The Silk Road, connecting these wide apart regions. Maglev transport has an ability to transport mass cargo 3-5 times faster than railway transport or sea transport, which are the main transport modes for mass cargo transportation. Today there are 2 main transport corridors, which connect Western Europe and South East Asia: Deep Sea and Transsib. Transportation via Deep Sea takes 30-35 days (via alternative Northern Sea Route it is 25-35 days), and via Transsib it is up to 21 days. The second approach is that the demand in reducing the transaction costs caused by freezing of the floating capital in ‘goods in route’ that eventually influences all the areas of national economy. Results: The obvious economic advantages of freight maglev in comparison with conventional railway transport, accordingly to the calculations, are: capital expenses saving on the stage of infrastructure construction; operations sustainability; energy efficiency; freight transportation speed; investments recoupment and profitability; side effects appearing during operating of freight maglev. Conclusions: Today, as the world economics shows some crisis developments the basic economics notations are being revised. There is a strong belief that new economics model should be based on decreasing the transaction costs on all stages of production and consumption. The new logistic concept will be focused on increasing the speed of transportation with a use of freight maglev mainlines.
Supersonic land transport in the disturbed environment of the limited space: breakthrough or direct direction
Authors: Antonov Yu F , Li V
Published: March 2018

The solution of the problem of organizing super-high-speed ground transport can be a combined transport system that presupposes the movement of a transport unit in a rarefied environment of an unlimited space, using the principles of magnetic levitation. The use of such a system will significantly increase the speed of the transport unit up to the supersonic range and dramatically increase, for example, the volumes of cargo transportation due to the following factors: 1. Reduction of aerodynamic resistance of air during movement; 2. The lack of direct contact of the transport unit with the lower structure of the path and, as a consequence, the complete absence of friction; 3. Separate leased lines allow the use of structures to ensure a significant increase in cargo traffic. Problem statement: study of the basic principles of motion of the transport system based on magnetic levitation in a rarefied environment, modeling of key processes, determination of the main parameters of the new transport system and establishing their optimal ratio, reduced to safe and energy-efficient operation conditions, assessment of possible risks associated with the use of this type transport, both for freight and passenger transportation.
Comparative analysis of variants of magnetic pole collection based on the halbach massif
Authors: Kaznacheev S A , Zimenkova T S , Krasnov A S
Published: March 2018

Today, one of the most urgent tasks of modern transport systems in terms of volume growth and quality improvement, freight and passenger transportation worldwide, is to increase the speed of transportation and reduce the cost of energy resources associated with these transportations. These tasks can be solved by introducing high-speed, in particular magnetic-lev- el transport systems. In this paper, we describe and compare the variants of assemblies of magnetic poles based on the Halbach massif. The relevance of the studies carried out is confirmed by the world experience in the use of permanent magnets in the field of magneto-levitation technologies in various branches of science and technology. The purpose of the research and comparative analysis of variants of assemblies of magnetic poles based on the Halbach massif is to obtain data on the possibility of using such assembly variants in levitation systems of magnetic-leav- ing transport [7], as well as visual proof that mathematical modeling does not allow to fully describe emerging phenomena In this article, we use empirical methods of investigation. The results obtained will find their application in the design of the design, which will reduce both the mass-dimensions and the energy consumption of the levitation system. The practical significance of the studies obtained lies in the possibility of applying the principles considered practically in any magnetic-levitation transport systems. Conclusion: Based on the experimental studies, data were obtained on the levitation forces and the braking forces, which make it possible to draw conclusions about the advisability of using these assembly variants.
Determination of the stressed state of thin-construction structures using the methods of the theory of shells
Authors: Emel’yanov Igor G , Kuznetsov Alexey V
Published: March 2018

Introduction. With the development of numerical methods and computational complexes, it is quite easy to evaluate the stress state of thin-walled structures in the form of rotation bodies. However, when solving such problems by the finite element method, it is necessary to choose such finite element grid to "grasp" all possible singularities of the stressed state. To correctly take them into account, you must reduce the size of the finite elements. Reducing the size of the elements leads to an increase in the required computing power. Formulation of the problem. When solving applied problems, even with a sufficiently coarse grid, the number of elements can exceed hundreds of thousands. When solving problems for real constructions in a three-dimensional setting, the amount of computation can be quite large and not every supercomputer can even handle such a solution. Objective. The purpose of this paper is to use the well-known approach used in shell theory, which allows us to reduce the three-dimensional problem to the solution of a onedimensional problem, which substantially reduces the requirements for computing power. Method (methodology). The problem of determining the stress state of shell structures in the form of bodies of revolution is considered. The approach is based on the integration of the equations of the theory of shells and the expansion of functions into Fourier series for separation of variables. The expansion into a discrete Fourier series in cosines and sines is used in this paper, which describes arbitrary asymmetric mechanical loads. Results. A thin-walled cylindrical structure hinged at the ends is considered. The structure is loaded in three places by a distributed force acting normal to the surface of the shell. After integrating the system of equations for the shell, the found stress-strain state of the shell is determined by the stress components on the outer and inner surfaces of the shell and the displacement components. The paper compares the calculation results with the proposed methodology and the finite element method. The conclusion. It is shown that the use of methods of shell theory, and the proposed expansion of resolving functions and loads in a Fourier series, allows solving problems using small computing resources. At the same time, the necessary accuracy of calculation for all components of the stress-strain state of the structure is ensured.
Ensuring electromagnetic safety at high-speed maglev transport
Authors: Apollonskiy Stanislav M
Published: March 2018

High-speed ground maglev transport creates electromagnetic interference of wide frequency spectrum during the movement. Electromagnetic interference spreads both in the surrounding environment and within the transport itself. Mathematically, electromagnetic interference is a vector (and in some cases tensor) field, where the functions are magnetic and electrical tenseness. Purpose. The purpose of the work is to ensure electromagnetic safety of high-speed ground maglev transport’s technical means and people (passengers and staff) by means of optimisation synthesis. Objective. The objective of the works is to optimise the placement of field sources in areas with variable geometric characteristics. Methodology. The method of the work is to synthesise elements of an energy system whose characteristics depend on the behaviour of electromagnetic interference. The mathematical model of the energy system being designed should take into account technological and constructive constraints, and electromagnetic interference. Calculation of electromagnetic interference from several sources in the premises, where the energy system is located by means of solving nonlinear tasks of special type mathematical programming. The peculiarities of this type of problems do not allow using known methods of mathematical programming. Finally, methods of formalisation and algorithms for solving optimisation problems of placement. Practical significance. The search of solution of optimisation tasks became feasible owing to a number of suggestions put forward by the author: introduction of scalar potentials for describing external electromagnetic interference of the electric power plant elements; the introduction of interinfluence taking into account the influence of closely-located sources; development of screening functions in the form of harmonic decompositions; the application of addition theorems which enable describing solutions of mathematical physics equations in different coordinate systems. Conclusion. The suggested method of formation of maglev transport electric energy system may be useful.
Problems of Economic Assessement of Speed in Transport and Logistical Systems in the New Technological Paradigm
Authors: Zhuravleva Natalia A , Panychev Alexander Yu
Published: March 2018

The article suggests a methodological approach to assessment of speed costs of transport systems at the new technological paradigm (The Fourth Industrial Revolution). Objective: The purpose of the work is to study economic effects of transport and logistical systems (TLS) performance as the infrastructure of high speeds economics. Methods. Deep analysis of railway infrastructure as a subsystem has been given, which has marked competitive advantages and ensures inclusion of the transport system in the new technological paradigm. The basic parameters of influence of new technological paradigm on transport systems, namely, dominance of global network production and consumption, supply chain management and added value creation through integration of products and services. The methodology of the study is based upon quantum description of the economics as a combination of the initial indivisible (quantum) economic structures (model or image), actions and relations between them (service business model), processes (predictive maintenance, state tracking), economic interaction between economic action objects (joint use of resources, instant response) in the space and time. The authors have introduced the notion of high speed economics as a measure of the society’s taking innovations, which changes all national and global markets, access to them, and interbranch value chains creation. Time management, high speeds are the key competitive advantages of the scheme: “order - fulfillment of the order (service business model)”. Results. The methods for assessment of speed of TLS, new nomenclature, method of high speed caused effects assessment have been developed. The algorithm of decision making about value of high speeds for transport services consumers in the new technological paradigm has been justified. On the basis of the analysis of three different distance transformation: length, connecting two objects (expressed in length units), costs and time (speed) for covering distance, -practical application of vector coefficient of the intensity of motion processes as the unit of measurement of any motion has been justified. As the assessment of time and space efficiency of TLS projects’ development, the product of the weight of the goods transported and vector coefficient of motion intensity is used.
Justification of Indicator System of Social and Economic Efficiency of High-Speed Urban Transport Development Strategy
Authors: Fiodorova Maria V
Published: March 2018

Introduction. At the present stage of developing methodological approaches to assessment of social and economic efficiency, all the external effects of the project are divided into effects that can be estimated in value terms, and effects that cannot be expressed in monetary units. In turn, the latter are divided into effects that have a quantitative expression and effects, described only on a qualitative level. External effects, which can be estimated in monetary terms, are directly included in the calculation of the social and economic efficiency of the project in the form of additional inflows and outflows of money. Problem. The conceptual basis for assessing the social and economic efficiency of new high-speed lines is the comprehensive consideration of all external effects from the implementation of the investment project (economic and non-economic) that do not affect the cost parameters of the project participants. Objective. The aim of the work is to develop a system of indicators for assessing the social and economic efficiency of the strategy of the development of high-speed urban transport. Methods. Study of existing methods of assessing social and economic efficiency, searching for disadvantages and advantages, exploring the advantages of magnetic levitation technology. Results. The development of this system of indicators for magnetic levitation transport, which is distinguished by such advantages as the impossibility of derailment, greater route speed, hence less time travel, less noise and vibration than light-rail transport and metro, complete absence of dust, is especially important. Conclusion. The proposed system of indicators for assessing the social and economic efficiency of the strategy of the development of high-speed urban transport takes into account all the advantages of magnetic levitation technology and makes it a priority when choosing high-speed urban transport.
Evaluation of Effectiveness of Different Transport Modes for Regular Mass Freight Transportation
Authors: Smirnov Sergei A , Smirnova Olga Yu
Published: March 2018

The article deals with different transport modes for regular mass freight transportation, their efficiency evaluation is conducted on the bases of cost, operational and environmental properties. Introduction. Due to demand in ensuring mass transportations between Southeastern Asia and Europe, there is a topical issue of efficient application of different types of ground transport. There is a request rising, to use cutting edge achievements in technology, to increase speeds of freight transportation for long distance and their safety and environmental friendliness enhancement. Analysis. Consideration of cost properties of application of different transport modes for mass freight transportation allows revealing that the lowest infrastructure cost is typical for conventional railway transport; the lowest prime cost of transportation is ensured by maglev transport with permanent magnets of the “RosMaglev” technology; the lowest commercially profitable mode of transport for today’s level of science and technology is vacuum transport. Operationally, the leading project is “RosMaglev”, with the vacuum transport having the lowest operational efficiency. From environmental and carrying safety points of view, railway transport has gone pretty far in the recent two decades. However, a more sustainable and safe one is the maglev and vacuum modes of transport, which is explained by lack of emissions and other types of pollution, including noise pollution. In terms of safety, maglev transport is the most competitive mode of transport. Whereas, vacuum transport is the most dangerous one. Results. For mass freight transportation, the most promising mode of transport is the “RosMaglev” permanent magnets maglev transport, according to the authors. The technology allows significant increase of infrastructure construction costs. The second most promising mode is conventional railway transport. However, if the demand in transportation is low and the energy efficient traction rolling stock is implemented, the high-speed freight railway transport may be highly competitive, especially in countries with developed high-speed railway network. The vacuum transport holds firmly the third place. Conclusion. The relevance of maglev transport implementation for mass freight transportations is obvious. The maglev technologies now in use in many countries for carrying passengers have proved profitable, safe and convenient. Technical “maturity” of these technologies allows considering all points and factors when constructing maglev freight lines which is very topical due to increasing need in searching transport routes alternative to sea routes.
Comparative Analysis of Frequency Scaling Algorithms for Signal Processing in Small-Size Mobile Platforms
Authors: Erdyneev Zhargal T , Geltser Andrey A , Velikanova Elena P , Panokin Nikolay V
Published: March 2018

Introduction. With the development of hardware and computer systems, which improve qualitative characteristics of synthetic aperture radars, with their dimensions limited, many new systems have appeared that allow using more accessible and widespread mobile platforms such as a car, quadcopters, unmanned aerial vehicles (UAV). Problem. The use of new types of platforms leads to additional distortions associated with features of the geometry of the radar performance and more severe trajectory instabilities. Thus, new synthetic aperture radar systems should have special requirements for both software and hardware, which differ from classical systems. Objective. The aim of the work is the comparison various algorithms that are used in modern radiovision systems to obtain high-quality radar images that can be integrated into various kinds of mobile platforms. Methods. The method of frequency scaling and various modifications of this method are taken as a basic algorithm, including additional algorithms for compensating trajectory instabilities. For comparison of algorithms, the system geometry for automobiles and aircraft systems are considered and simulations were performed with the presence of point reflectors at different distances and the distortion of the platform motion. Results. The difference of the considered algorithms in the form of flowcharts and mathematical formulas is shown. Based on results of the simulation the use of the basic frequency scaling algorithm at distances corresponding to the geometry of the automobile system leads to the distortion of the response along the azimuth. In addition, the use of the modified algorithm for compensating trajectory distortion allows correct focusing the targets at different distances. Conclusion. The proposed combination of modified algorithms of trajectory distortion and frequency scaling allows focusing the image evenly throughout the frame and improving the quality of the image in the near zone.
Uyku Sağlığının Korunmasında Uyku Hijyenin Rolü ve Stratejileri
Authors: Güneş Zeynep
Published: March 2018

Uyku
sağlığın önemli bir bileşeni ve temel fizyolojik bir süreçtir. Uyku hava, su ve
yiyecek gibi temel fizyolojik bir gereksinimdir. Uyku metabolik olayların
düzenlenmesinde, emosyonel düzenlemelerde, fiziksel performansta, hafıza ve
öğrenmede önemli bir rol oynamaktadır. Uyku sağlığını sürdürmede ise uyku
hijyeni önemlidir. Yeterli bir uyku hijyeni uyku
bozuklukları sıklığında azalma, uyku memnuniyeti ve kalitesindeki artma ile
birleşmektedir. Uyku
hijyeni uyku kalitesini artıran ilke ve uygulamalar olarak tanımlanmaktadır. Bu
ilke ve uygulamalar davranışsal ve çevresel faktörlerin düzenlenmesini,
iyileştirilmesini kapsamaktadır. Uyku hijyeni programları gündüz aşırı
uykululuğunun azaltılması ve insomnianın tedavisinde anahtar rol oynamaktadır. Bu makalede bazı uyku
bozuklukları tedavisinde kullanılan uyku hijyeni staratejileri ve uyku hijyeni
kapsamı sunulmuştur.
Konik Işınlı Bilgisayarlı Tomografinin Periodontolojide Kullanımı
Authors: TEMUR Katibe Tuğçe , KESİCİ Hüseyin
Published: March 2018

Diş hekimliğinde periodontal hastalıkların teşhisi öncelikle konvansiyonel iki boyutlu görüntüleme yöntemlerine dayanır. Ancak konvansiyonel görüntüleme yöntemlerinin üç boyutlu yapıları iki boyuta indirgenmesinden kaynaklanan geometrik distorsiyon ve anatomik maskeleme gibi dezavantajları mevcuttur. Günümüz diş hekimliğinde sıklıkla kullanılan konik ışınlı bilgisayarlı tomografi ile üç boyutlu görüntü elde edilmesine imkan sağlayarak bu tür dezavantajlar elimine edilmiştir. KIBT özellikle kemik içi defeklerin, furkasyon tutulumunun ve bukkal / lingual kemik yıkımının teşhisi için değerli bir görüntüleme tekniğidir. Bu makalede periodontal hastalıklarda konik ışınlı bilgisayarlı tomografinin konvansiyonel yöntemlere göre avantajları ve dezavantajları tartışılmıştır.
Materno-fetal outcomes in pre eclampsia in a rural hospital of Antananarivo Madagascar
Authors: Randriamahavonjy Romuald , Tsifiregna Rosa L. , Andrianirina Zafitsara Z. , Andrianampanalinarivo Hery R.
Published: March 2018

Background: Pre-eclampsia is a human-pregnancy-specific disease defined as the occurrence of hypertension and significant proteinuria in a previously healthy woman on or after the 20th week of gestation. It is one of the leading causes of maternal and perinatal morbidity and mortality worldwide. The aim of this study is to determine the prevalence of pre-eclampsia and to evaluate its maternal and fetal outcomes in a rural area.Methods: This is a cross-sectional study carried out at the Bejofo Mahitsy hospital. It is a District Hospital Referral Center, which is located on the outskirts of the capital, 32 km from Antananarivo, Madagascar. This work was carried out during 24 months, from January 2014 to December 2016. We have included all hospitalized pregnant patients with SBP ≥140 or DBP ≥90mmHg, significant proteinuria> 300mg/24H with or without edema.Results: During this period, we recorded 97 cases of pre-eclampsia, frequency of 1.68%. The mean age of the parturient was 28 years old and 46.39% of the patients were primiparous. At the admission to the hospital, 37 (38,14%) did not show any particular signs. Concerning the severe high blood pressure, 47 pregnant patients (48,46%) had SBP greater than 160 mm Hg and 26 womens (26,80%) had DBP greater than 110 mm Hg. Caesarean section was the method of delivery widely adopted in 74.22 %. Maternal morbidity was represented by eclampsia in 21.65%, Retroplacentary Hematoma in 3% and HELLP syndrome in 4.12%. Fetal morbidity was important with 35% of premature newborns, 25.77% was small for gestational age and 12.37% was with neonatal asphyxia. Intra uterine fetal mortality was found in 11.34% and the perinatal mortality rate was 8.73%.Conclusions: There is a high frequency of pre-eclampsia in our setting and the consequences of pre-eclampsia for neonatal mortality and morbidity outcome are alarmingly high pre-eclampsia. Prevention necessarily involves quality prenatal follow-up such as screening, early and appropriate care of hypertension during pregnancy.
Craniorachischisis: first case reported in Madagascar
Authors: Rabarikoto Hary F. , Rakotozanany Patrick S. , Tsifiregna Rosa L. , Ratovondrainy Willy , Randriambololona Domoina M. A.
Published: March 2018

Craniorachischisis is the most severe type of neural tube defect in which almost the entire brain and spinal cord remain open. We report a case in a female fetus born at gestational week 38, with both anencephaly and open spina bifida. It was the second pregnancy of a 26-year-old woman. The first pregnancy had to be interrupted by a medical termination at 18th gestational week because of an anencephaly. We aim to report the first case documented in Madagascar.
Knowledge, attitude and practices regarding dengue in a rural setting of Jammu
Authors: Dewan Deepika , Sahni Bhavna , Kumar Dinesh , Bala Kiran
Published: March 2018

Background: Rapid urbanization, environmental changes and migration of communities is becoming a major reason for increase in number of cases and deaths due to dengue over recent years. Key lies in prevention, since only symptomatic treatment is available. Knowledge, attitude and practice studies provide important information about prevalent scenario regarding awareness of particular health problem in a community.Methods: The present study was descriptive and cross sectional in nature, conducted in July 2017. The study participants belonged to village Tanda of Block RS Pura which is a field practice area of Department of Community Medicine, Government Medical College Jammu. The data was collected by a face to-face interviews of respondents after obtaining informed consent. Enumerators were provided a schedule containing formalized set of questions on knowledge, attitude and practice of dengue control. Information was collected by interviewing the available adult in every second household.Results: Knowledge about dengue was intermediate. Only 35% of the respondents knew atleast two most common symptoms of dengue. They had insufficient knowledge regarding time of dengue mosquito bite and common breeding sites. However attitude of people regarding dengue was good. Almost all the respondents think that dengue is dangerous and one should consult a registered Medical Practioner in case dengue occurs. Commonly used preventive methods included coils and sprays. Drains and surroundings were cleaned to prevent mosquito breeding.Conclusions: There is an urgent need to increase awareness of people especially belonging to rural communities regarding prevention and common signs and symptoms of dengue.
Основные детерминанты человеческого счастья (или на какой траектории цивилизации «гнездится» советско-российское человечество? (Часть 2)
Authors: Косьмин Анатолий Дмитриевич , Кузнецова Ольга Павловна , Косьмина Елена Анатольевна
Published: March 2018

На основе компаративного анализа различных методологических подходов к идентификационному и критериальному описанию феномена человеческого счастья определяется его место в системе категорий теории благосостояния (как категории, замыкающей эту теорию). Критически осмысливаются результаты двух независимых исследований так называемых индексов счастья в различных странах мира, проведенных авторитетными мировыми социологическими центрами. Предлагаются основные интегральные индикаторы счастливости людей, имеющих различные степени предпочтения. Обозначены основные направления деятельности государства по переводу российских граждан на более высокую траекторию человеческой цивилизации.
Оценка влияния комплаенс-расходов на показатели инновационного развития экономики
Authors: Иванова Марина Вячеславовна , Гармасар Ольга Александровна
Published: March 2018

Статья систематизирует теоретические положения влияния комплаенс-расходов на показатели инновационного развития экономики и включает оценку этого влияния. Исследовано понятие комплаенс-расходов в мировой литературе, установлена их роль в обеспечении качества государственного регулирования. Методами корреляционно-регрессионного анализа оценивается взаимосвязь комплаенс-расходов в сфере уплаты налогов и ряда показателей инновационного развития экономики. Проведен корреляционный анализ взаимосвязи иных составляющих нормативных издержек (в частности, совокупной налоговой нагрузки) и показателей инновационности в целях выявления вклада элементов в общий эффект. Анализ позволил установить отсутствие значимого влияния комплаенс-расходов на изучаемые показатели, при параллельном выявлении заметного влияния изменения налоговой нагрузки. Сделан вывод о большей важности финансовой составляющей в составе нормативных издержек по сравнению с комплаенс-расходами.