bluuebunny/crossref_metadata_2025 huggingface dataset:
Landslides-flows on rock dumps of coal mining enterprises
Authors: Rybalchenko Svetlana , Verhovov Konstantin , Kudriavtcev Sergei
Published: January 2019

The paper considers one of the most dangerous slope exogenous processes formed on the rock dumps of coal mining enterprises landslides-flows. The mechanism of occurrence, movement and accumulation of landslides-flows, mechanisms of negative impact on objects and territories is described. The factors of activation of landslides-flows on rock dumps of coal mining enterprises (anthropogenic, meteorological, hydrological, hydrogeological and geological factors).
Study of the interaction between roof bolting of the output and a breed array inclined to creep
Authors: Pleshko Mikhail , Cartozia Boris , Podmiglazov Maxim
Published: January 2019

The basic equations of the theory of linear hereditary creep are considered. An algorithm for determining the value of the anchor tension as a result of deformation of rocks in the bottom-hole zone of the barrel is presented. The area of the scope of roof bolting trunks in various breeds is defined.
The study of the influence of the rock mass heterogeneity on the stress-strain state of the shaft lining
Authors: Pankratenko Alexander , Isaev Alexander
Published: January 2019

Shafts often cross sections of a layered mass of rocks of different strength during the sinking. The article deals with the design case of interaction of monolithic concrete lining in the bottomhole zone of the shaft with a mass containing a rock layer with low stress-strain properties. To study its influence, spatial numerical models have been developed, which allowed us to consider several indicative positions of the «weak» layer referred to the shaft lining. The analysis of calculation results shows that in case of direct contact of the support with a «weak» layer, the increase in stress intensity in it can reach 5-fold values and is determined by the thickness of the «weak» layer and its stress-related characteristics. The most effective control action in this context is the advance hardening of the «weak» layer before its expo-sure during the sinking.
Thin-walled building structures with improved properties for high-rise construction
Authors: Solovyova Valentina , Abu-Khasan Makhmud , Solovyov Dmitry
Published: January 2019

A high-efficient complex reactive composition consisting of a polycarboxylate polymer, cesium nitrate (CsNO3) and silica sol was developed for cast-in-place housing construction from high-strength concrete. The use of this composition provides production of high-strength concrete with increased crack resistance.
Durable geoecoprotective building structures from ash foam concrete for high-rise construction
Authors: Rusanova Ekaterina , Abu-Khasan Machmud
Published: January 2019

The article analyzes the use of ash foam concrete filler structures based on ash from sludge combustion for high-rise construction. Physical and chemical as well as physical and mechanical studies of samples of structures made of ash foam concrete were carried out. Ash foam concrete was produced with the use of ash from sludge combustion instead of natural sand after long-term operation of building structures. The improvement of the material in thermal protection is shown. Phase changes in the structures over time which is more than 12 years are traced.
Modeling of infilled thin shell construction built on compressible soil
Authors: Tsimbelman Nikita
Published: January 2019

This paper presents review of author’s researches of thin cylindrical shells of large diameter filled with soil and used in construction of berths, breakwalls, retaining walls, bridge piers, and etc. The theoretical model for soil stability of the researched structures based on soil boundary state of stress solution with allowance for bond slip is developed. Suggested correlation represents a theoretical model that functionally relates parameters of foundation soil and construction sizes with maximum horizontal force, which might be held by a structure without loss of soil bearing capacity. The numerical model of a thin cylindrical shell with infill under eccentric load is developed. Modeling and experimental determination of the interface strength of the contact surface between the infill and the inner surface of the shell is proposed. The details of testing of physical model used for the experiments are discussed. The effects of the interface friction on the shell behavior and on the foundation stresses are investigated. The influence of parameters affecting the interaction between the soil infill and the inner surface of the shell material is determined. It is based on a comparison of experimental results with calculations performed using the proposed mathematical model. The results of experiment are shown in comparison with calculation data’s for proposed numerical model. Effect of ice load on shell structures with infill on compressible soil is also considered in this research. The numerical model is proposed, which takes into account the interaction between soil environment, effect of ice load and thin shell with infill, to predict the stability and durability of shell structures under ice load.
Thermal-physical calculations as a basis of design solutions of buildings and structures in the permafrost zone
Authors: Ulitsky Vladimir , Sakharov Igor , Paramonov Vladimir
Published: January 2019

The goal of calculations in foundation engineering is to define strain-stress behavior of a soil bulk due to loads transferred from a structure to a subsoil. While calculating subsoils of foundations, which consist of frozen and permafrost soils occupying about two thirds of the territory of Russia, an engineer should firstly predict changes of temperature fields in the subsoils. These calculations imply that a future expert is aware of equations of mathematical physics, boundary conditions of temperature problems etc. However, thermal physics is not included in the curriculum of university departments, which train specialists making calculations or design of foundations. Due to this fact, as a rule, a university graduate lacks knowledge on the laws of thermal distribution in milieus and on the methods of solving the corresponding problems. The paper gives a number of examples of thermal-technical calculations of foundations subgrades, which show the necessity of knowledge in the field of thermal physics during design of structures in the permafrost zone.
Strengthening of sliding soil body using gravitational pile structure at highway in Chita Region
Authors: Valtseva Tatiana , Kudryavtsev Sergey , Goncharova Elena , Peters Anastasiya
Published: January 2019

This article presents the way to prevent deformation of linear structures build on sliding slopes. The offered structure is built on thawing permafrost soils. Some results of scientific research and engineering calculations of options for rational design of roads located in cold regions of Russia are given as an example of a highway construction. The highway is constructed in complicated climatic and engineering-geological conditions. There are occurrences of insular permafrost and a wide spread of deep seasonal freezing. Melting permafrost requires special treatment in construction due to changing their temperature and humidity conditions. Thus, the structure includes installation of piles in slopes and their interconnection in a pilework by means of a vertical geogrid rigidly connected to pile caps and vertical geogrid layers. The work stage from cap bottoms to the first layer of a horizontal geogrid and interlayers between geogrids are filled with the crushed stone compacted. The horizontal geogrids are installed on account of their partial location in a no-float soil body of the slope or natural downhill. Modelling of the structural behavior with the geotechnical software complex «FEM models» estimates the gravitational effect of a sliding body of earth. The reliability of the structure is confirmed by regular measurements and observations on the highway section. On the basis of the research results some structural measures for providing operational reliability for highway rational designs in the northern territories of the Russian Far East are offered.
Evaluation of the quality of pile foundations by different methods
Authors: Zhussupbekov Askar , Morev Ivan , Tanyrbergenova Gulzhanat , Shakirova Nurgul
Published: January 2019

At the present time, in Astana city is going on works by construction public transport system LRT (Light Railway Transport). LRT is an overhead road with two railway lines. The first stage of construction is including construction of overhead road (bridge) with 22.4 km length and 18 stations. The foundation of bridge is the bored piles with cross-section of 1.0-1.5 m and length of 8-35 m. A design bearing capacity of pile is 4500-8000 kN. Chinese drilling rigs Zoomlion was used for soil boring without casing. A polymer slurry is used to maintain the walls of boreholes in sand and gravel soils. In these conditions very important point is the integrity of concrete body of each bored piles. For checking the integrity was used two methods – the Low Strain Method and the Cross-Hole Sonic Logging. The aim of this paper is finding the advantages and disadvantages of each method which applying on testing site.
The influence of the nature of sound reflection from enclosures on the reverberation processes in the rooms
Authors: Golovko Aleksander , Ledenev Vladimir , Antonov Aleksander
Published: January 2019

The article considers the questions of assessment of reverberation processes in rooms with various character of a sound reflection from the enclosures. An efficient technique for calculating of the reverberation sound energy in the rooms with mirror-diffuse reflection of sound is offered. The technique is based on the representation of mirror reflected sound rays in the form of separate groups with parameters corresponding oblique, axial and tangential rays. The article includes the comparison of the calculation of reverberation time results on the basis of the division of all the rays into groups with the results of direct reverberation modeling by tracing rays. A good convergence of the results was obtained.
Incidents of damage to berm drainage ditches in cold region and countermeasures
Authors: Sato Atsuko , Yamanashi Takahiro , Adachi Takayuki
Published: January 2019

Berm drainage ditches may fail due to frost heave in cold and snowy areas like Hokkaido. Many of these failures are regarded to be caused by damage due to frost heave in the ground or freeze-thaw, but no sufficient measures are being taken, as construction guidelines and procedures do not describe any established countermeasures for the damage. Therefore, it was decided to study countermeasures by utilizing berm drainage ditches that can change form in response to frost heave, rather than by trying to reduce the level of change caused by frost heave. A drainage ditch made of flexible asphalt sheets was constructed on site, and the soil temperature, frost penetration depth, frost heave amount, and other parameters were measured. As a result, it was found that a drainage ditch made of asphalt sheets is more effective when ground conditions including moisture and temperature are severe in relation to frost heave.
Analytical calculation of the combined suspension truss
Authors: Kirsanov Mikhail , Tinkov Dmitriy , Boiko Oleh
Published: January 2019

An algorithm is given for obtaining the formula for the dependence of the deflection of a regular planar truss of an arched type with a suspended lower belt on the number of panels. The cases of uniform loading of the nodes of the upper and lower belts by a vertical load are considered. To generalize a number of solutions obtained in the system of computer mathematics Maple to an arbitrary case, an induction method was applied. For this purpose, for a sequence of coefficients of the particular solutions found, a common term is determined which is a solution of the recurrence equation. The deflection was determined with the help of Mohr's integral, which depends on the forces in the rods. Forces in a statically determinate construction were performed by cutting out nodes from the solution of a system of equations written in a matrix form. The analytical dependence of displacement of the mobile support on the number of panels is found.
Control of surface subsidence based on building deformation monitoring data
Authors: Shardakov Igor , Barayakh Aleksandr , Yepin Valery , Tsvetkov Roman , Glot Irina
Published: January 2019

This paper presents an approach to the estimation of ground surface distortion based on the data from the online deformation monitoring systems mounted on the foundations of the group of buildings located in the area of ground instability. The local monitoring systems provide control of building foundation settlements using the hydrostatic level measurement technique. These data are used to calculate the inclination foundation angles which reflect the distortion of the earth's surface at local points. The hydrostatic level system allows one to perform measurements with the desired space and time sampling and to obtain a quite detailed picture of the changes in the deformation parameters over time. A set of such local monitoring units forms a distributed system that allows monitoring the state of the earth's surface over a large area. Here, we present long-term results obtained using such system located in the city area above mining. The evolution of the inclination angles of the group of overlying buildings is shown. We discuss the validity of this approach, and estimate the accuracy of the measuring method and the factors that influence it. Finally, we assess the possibility of making short-term predictions of deformation processes inside the rock massif.
Numerical simulation of oscillations of a nonlinear mechanical system with a spring-loaded viscous friction damper
Authors: Nekhaev Viktor , Nikolaev Viktor , Safronova Marina
Published: January 2019

The dynamics of a mechanical system consisting of a parallel-connected main elastic element, an external disturbance compensator having a nonlinear force characteristic, and a viscous friction damper sprung by a linear spring are studied. The resulting system of differential equations describing the behavior of the system has one and a half degrees of freedom and has specific properties depending on the ratio of stiffness of the main spring and the spring suspension of a viscous friction damper. It is established that a single nonlinear system with one and a half degrees of freedom has either one or two harmonics. In the general solution of the system of differential equations, there are always two harmonics in the above-resonance zone, one of which is always equal to the disturbance frequency, and the second one is sufficiently close to the frequency k0. In the linear conservative case and the absence of suspension of the viscous friction damper, the natural frequency of the displacement of the system k0 =14.046 s-1.
Conducting tensometric monitoring of the technical and stress-strain state of underground facilities
Authors: Yurgaytis Alexey , Topchiy Dmitriy , Chernigov Vitaly
Published: January 2019

The authors describe the experience of carrying out a scientific and technical research study as part of scientific and technical support at the construction and design stages of large-scale construction projects in the city of Moscow (including unique ones). Analytical data are presented as a result of studying the stressed-deformed state of a pile foundation with step-by-step application of load in the course of implementing civil construction projects.
Behavior of bearing reinforced concrete panels in the process of combined action
Authors: Korolchenko Dmitry
Published: January 2019

This research of has important significance in the constructive solution, manufacturing technology and labour costs. The irreversible changes in mechanical properties occur in reinforced concrete elements, decrease in compressive and tensile strength, additional deflections. In this paper, the goal was to assess the behavior of the bearing reinforced concrete panels with a combined action (fire and force) as close as possible to the actual effect in a fire. It was necessary to solve the following tasks: to determine the dependence of deflection and deflection rate on the heating of the plate and the load acting on the panel, to determine the amount of concrete falling before breaking the integrity of the panel (the formation of through cracks, determine the degree of heating of the panel from the duration of fire and force.
Involving technogenic mineral resources in the production of "glass-steel" compositions
Authors: Makarova Vera
Published: January 2019

The purpose of this study is to ensure the sustainable development of society by reducing the use of natural resources. Waste from the mining and metallurgical sector is a valuable raw material for the making of glass-steel compositions. The obtained results show that the involvement of man-made waste positively affects the physico-mechanical and operational properties of enamel slurries. The involvement of mining and metallurgical sector waste in the technological cycle of obtaining glass-steel compositions will allow expanding the mineral base for the production of protective coatings while simultaneously ensuring the requirements of environmental safety and protection.
Information estimate of natural geosystem preservation in geoconstruction
Authors: Svatovskaya Larisa , Mikhailova Kseniia , Supeliuk Tatyana , Kniazev Anatoliy
Published: January 2019

The area of the research is natural geosystem preservation in geoconstruction. The aim of the research is introduction of information assessment of preservaton level using total geoecological parameter in geoconstruction. Three features were chosen as the main geoecological information features of the estimate, prediction and geosystem preservation management, they are: natural raw materials consumption, fuel consumption and useful properties of a mineral geostructure with the end of the life-cycle. Rating method is suggested as a method of the rasearch;it includes conversion of the properties, using certain mathimatical operations into dimensionless values named index of properties. By determining weight factors with the help of expert assessment and bydetermining the sum of productions of indices and coefficients as total geoecological parameter, the study shows the relationship of the latter with the values of the real consumption of natural raw materials, fuel and useful properties of wastes with the end of the life-cycle of a geostructure. Also the study suggests the achieved levels of the preservation and predicted increase of the level takinginto consideration the total geoecological parameter. The results can be used for estimate of any geotechnology in the preservation aspect.
Investigation of salt migration in the ground saturated with a chloride-sulphate sodium-magnesium solution in freezing-thawing cycles**
Authors: Grigoriev Boris V. , Yanbikova Yulia F.
Published: January 2019

Among the variety of objects in the permafrost zone, soils are encountered, including cryopegs – highly mineralized solutions that have excessive pore pressure. Generally, they have a negative impact, reducing the load-bearing capacity of the ground and causing corrosion of concrete and metal constructions. The study of cryopegs does not receive enough attention from Russian and foreign researchers, not least because of the peculiarities of the thermodynamic state they exist in, therefore detailed investigation of this cryologic object is required in the field and in laboratory conditions. In the presented research the authors study the mechanism of the migration of salt ions in pore water in an enclosed volume of ground during the freezing front movement. To do this, the authors developed an experimental unit and created a measuring unit where the studied moist ground is inserted. Temperature can be set on the opposite sides of the measuring unit. Controlling the extent and speed of temperature change provides a means to regulate freezing front movement (directed from top to bottom). After a number of freezing-thawing cycles salt compositions and concentrations are checked and measured in four intervals of sampling. As a result of the experiments a significant increase in concentration was found at opposite sampling points, and in particular at the beginning of the freezing front movement.
Methodology for environmental safety efficiency within environmental conservation activities in construction industry
Authors: Voskresenskaya Elena , Vorona-Slivinskaya Lybov , Panov Sergey
Published: January 2019

The article represents the analysis of environmental conservation activity in construction, aimed at ensuring the environmental effect, which is to prevent pollution of natural resources and, therefore, to improve the quality of building materials and products. There comes a need to correctly evaluate the damage that reduces the efficiency of construction production as a result of environmental pollution. Thus, it seems advisable to consider the methodology for evaluating such damage and to analyze the sufficiency of statistical information. The authors have developed a methodology for ecological and economic assessment of the efficiency of environmental conservation activities in construction. The economic efficiency of environmental conservation costs characterizes only a part of the overall social effectiveness of environmental activities. This, however, does not underestimate the role of such indicators, the analysis of which is necessary to choose the most rational activity, which is impossible without quantitative methods and estimates. Therefore, research should be carried out in this field in order to develop practical recommendations for such evaluations.
Legal regulation of environmental protection and ensuring environmental safety when using underground resources at regional and local levels
Authors: Voskresenskaya Elena , Vorona-Slivinskaya Lybov , Mokhorov Dmitry , Ponomarenko Anatolii
Published: January 2019

The article deals with environmental and legal problems of using underground resources, particularly associated petroleum gas. Today regional legislation develops unsystematically and inconsistently, because the powers of the constituent entities of the Russian Federation are regulated insufficiently in the sphere of environmental protection and ensuring environmental safety, when using underground resources. Some cases contain direct contradictions to federal legislation. Some constituent entities of the Russian Federation have a tendency for normative legal regulation of this area of public relations within the framework of "advanced standard-setting". These tendencies show the need to specify the powers of the constituent entities of the Russian Federation in federal legislation. Disposal of associated petroleum gas is becoming a serious problem today. A great part of this gas is wildly flared getting into the atmosphere, whereas there is a more decent and even profitable way of its disposal. The article analyzes the corporate structure of associated petroleum gas production in Russia and determines the directions for improving the legal framework. Based on their research, the authors propose to develop a Program of implementing a set of measures aimed at increasing the extraction and subsequent processing (disposal) of associated petroleum gas by independent oil companies, which could serve as measures for state stimulation of oil production development.
From planetary to space mining: prospects for sustainable development
Authors: Ursul Arkadiy , Ursul Tatiana
Published: January 2019

The article considers sustainable mining development as one of the most important problems of achieving global stability as a solution to the contradiction between the growing needs of mankind and the presence of limits of the biosphere in their provision. It is expected that sustainable mountain development will continue in both the planetary and space dimensions, and these processes will unfold in close cooperation. Having joined the space industry, sustainable space mining will contribute to the formation of extraterrestrial basis of the future wide space exploration by mankind.
Development of water supply systems in small municipalities
Authors: Smirnov Vitaly , Pomogaeva Valentina , Shlychkov Dmitriy
Published: January 2019

Supplying population of small municipalities with drinking water brings up a number of problems. The main ones are water production, its treatment and transportation. Studying the difficulties of supplying population with drinking water makes it possible to identify acute problems and to outline the prospects for the development of water supply systems. The statistical data on water supply problems are given. The dynamics of aging water systems is presented. Various water supply schemes are considered. There are highlighted unique details of each water supply system, that require an individual approach, careful preparation and analysis of the initial data, and performance of quite complex technical and economic calculations. The options for combining existing systems and their reconstruction are discussed. Water supply systems with a water tower are analyzed. Ways out of the crisis in water supply field are suggested.
Autonomous power supply technology in term of natural and technogenic disasters
Authors: Makasheva Svetlana , Pinchukov Pavel
Published: January 2019

The paper deals the problem of the energy supply after disaster and emergency. The purpose of the paper is to review the autonomous power supply technology's application to provide electricity in the aftermath of disasters for emergency relief and to remote areas having no access to the grid. Safety requirements for electric power system facilities in case of a threat of violations and/or electricity supply fault are considered. The advantages of different types of autonomous electricity sources for disaster resilience are discussed. On the example of the Sakhalin Island, Russia, a conclusion about the difficulties of using solar electricity sources during the repair and recovery works after accidents and disasters at island territories is drawn. The paper concludes by emphasizing the importance of autonomous power supply technologies in engineering education and integrating them in programs related to alternative energy and disaster & emergency management.
Problems of the model of managing the integrated risk assessment for humans and environment in construction activities
Authors: Uskov Vladislav , Reshetnikova Irina
Published: January 2019

The article discusses the risk assessment methods, the influence of safety threats on the occurrence and likelihood of risks, the difficulties encountered before risk assessment, raises issues of planning and extent of the construction entity's influence on risk assessment and construction protection. Particular attention is paid to the processing of results and analysis of threat assessment. An assumption is made that planning can be used as a risk assessment tool, and a way of using this tool to protect against emerging threats is suggested.
Cost-effectiveness analysis of tank and base foundation diagnostics without paintwork removal
Authors: Chepur Petr , Tarasenko Aleksandr , Krivorotov Vadim , Tikhanov Evgeniy , Gruchenkova Alesya
Published: January 2019

The article describes the particular qualities of application of a cylindrical steel tanks' and base foundation technical inspection method without removal of a protective covering. The model is formed and the basic parameters of an estimation of economic efficiency of carrying out of diagnostics are determined. The economic efficiency of application of the modern method of vertical steel tank examination is estimated. The high economic efficiency of the new technological method is substantiated in comparison with the traditional method. It is established that the advantage of using the innovative diagnostic method in comparison with the traditional method is fully manifested when it is necessary to maintain a large fleet of tanks. It is calculated that, given the design parameters, the savings in the use of the method proposed by the authors in the long term are 1773.2 million rubles compared with traditional. The use of a new technological method - the technology of diagnosing vertical steel tanks without removing the protective coating, allows to reduce the total cost of conducting diagnostics with a discount of 8.7 times. Dependences were obtained of the discounted volume of expenses on acquisition of the equipment and the subsequent diagnostics of vertical steel tanks on the operation time of the vertical steel tanks.
Anthropotechnic reliability of materials and products for non-collapsible and collapsible systems
Authors: Kazaryan Ruben
Published: January 2019

In engineering systems, which are used in construction industry and its production (buildings, constructions, roads), two fundamentally different ways of mechanical joint are used: non-collapsible and collapsible. Some architects relate non-collapsible objects to monolithic and consider their recycling as a difficult and expensive process. Compression joints on self-locking fittings can be considered as non-collapsible as well. A compression connection cannot be disassembled without destroying. Collapsible joint differs from non-collapsible by the following features: 1. You can disassemble it to original components according to a prior technology, identify and change defective elements or add some other components. 2. It requires periodic inspection and maintenance because of climatic conditions (temperature changes, pressure changes, wind loads, etc.), and the specificity of operation of this joint leads to a decrease in its mechanical properties. 3. It is forbidden to make them monolithic, so collapsible joints are mounted in an accessible way.
Selection of recruitment methods in construction organizations
Authors: Reshetnikova Irina , Zotkina Natalia , Gusarova Miroslava
Published: January 2019

There are methods for determining the quantitative and qualitative need for labor in the paper. The methods of recruitment are analyzed. Classification of methods of recruiting is given. Their advantages and disadvantages are revealed. The paper presents the results of a study on modern methods of recruiting personnel used by construction organizations in Tyumen.
Tax Accounting System for Geotechnical Construction
Authors: Kholkin Anatolii , Zonova Alevtina , Bespyatyh Alexander , Gamulinskaya Nadezhda , Artemyeva Olga
Published: January 2019

The importance of this research is based on the need of the tax accounting organization as information system, because that can meet the information needs of users in information useful for tax management. This need is strongly manifested in respect of geotechnical construction enterprises, because without reliable information it is impossible to make quality decisions in the tax management of these enterprises. And the right decisions in tax management ensure the survival of these enterprises in the long term. As the information system, tax accounting organization and maintenance require the description of tax accounting in terms of system approach. The purpose of this article is to give determination of tax accounting based on the implementation of a system approach, because applying a system approach will allow organizing the tax accounting, as well as functioning information system. As a result of the research, the definition of tax accounting was given from the point of view of system approach, subsystems of tax accounting were defined, and its elements were described. Also, relations between the elements were determined. Functions implemented by a tax accounting system were described, and relations between the functions were identified. This research is practically important and can be applied only in those countries where tax legislation provides for differences in an order of calculation of tax report figures and calculation of financial report figures, or where the national tax legislation permits the employment of different methods of calculation for tax and financial reports.
Risk of the building deformation because of above-permitted standard subsidence
Authors: Chernyshev Sergey , Lavrusevich Andrey , Martynov Aleksey
Published: January 2019

The authors suppose that the vulnerability of natural-and-technical system in relation to the subsidence can be equated to the financial costs of repair or new construction with the summation of losses from the temporary exception of this system from the economic activity. Then the vulnerability can be considered as the economic damage, and risk can be considered as the multiplication of damage by the probability of a dangerous event. The method of calculation of geological risk is offered in the article and can be applied in practice by geologists, mathematicians and designers.
Formation of a portfolio of innovation projects based on management of their life cycle parameters
Authors: Aleksandrova Margarita , Sergeeva Nadezhda , Zakharova Lidiya , Okolelova Ella , Shibaeva Marina
Published: January 2019

This paper presents the results of study of the analysis of the formation of a portfolio of innovation projects based on the management of their life cycle parameters. An algorithm for forming an innovation portfolio is proposed, which includes analysis of the duration of the life cycle stages and determining the level of competitiveness of the planned innovations in the portfolio, assessing risks, and forecasting the expected economic results when implementing them. An algorithm has been developed that allows choosing the optimal set of risk management methods as a part of an innovation project, which includes identifying factors that increase and decrease the impact of a particular risk on the innovation implementation process. The proposed methods of monitoring the competitiveness of innovation projects allow assessing the competitive possibilities of an innovation project, which allows determination of the main directions for its implementation.
Theoretical aspects of regional sustainable development in the EU and Ukraine
Authors: Buzko Iryna , Vartanova Olena , Trunina Iryna , Khovrak Inna
Published: January 2019

Effective use of the potential of both an individual country and its regions in order to ensure sustainable development is possible only on the basis of conscious, purposeful, scientifically grounded actions on the transformation of regional systems. That is why, the aim of the paper is to provide an analysis of the theoretical aspects of regional sustainable development in the EU and Ukraine, which will create a methodological basis for the further development of practical mechanisms for ensuring balanced regional development. As a main method of research, we use the critical analysis and comparison of normative documents, analytical reports, regional development strategies and scientific publications on the issues of sustainable development. As a result, the authors substantiate the essence of sustainable development and clarified the concept of regional sustainable development. This made it possible to determine its features. The paper also summarizes the institutional framework for ensuring regional sustainable development, including the justification of informal constraints, formal rules and coercive mechanisms. The authors identify vectors for ensuring the regional sustainable development in Ukraine. However, for the effective implementation of certain strategic priorities, a change in the public consciousness is needed in order to understand the importance of regional sustainable development, as well as the definition of clear criteria for the achievement of sustainable development and continuous monitoring of its level. We consider education as one of the most effective tools that will allow the formation of a system of knowledge, skills and competences necessary for the formation of citizens responsible for the future of the country.
Energy Planning and Energy Efficiency in Smart City Areas
Authors: Nurulin Yury R. , Skvortsova Inga V. , Kalchenko Olga A.
Published: January 2019

The main value added of the approach, which is considered in this paper, is the joint development of an innovative concept for energy improvement city's areas, as well as methods and tools for its implementation. A new coordinated approach to energy planning and implementation at the district level within the framework of the concept of smart cities contributes to the efforts of consumers to improve energy efficiency. The research focuses on energy efficiency for existing built-up urban structures. They represent a large part of the built environment of European cities and face significant, often urgent energy challenges.
Determinants of real decision making on productive components of consumption under the current economic conditions of the Slovak Republic
Authors: Psárska Marianna
Published: January 2019

The aim of the contribution is to determine the main determinants of the formation of their productive components in consumption under the real conditions of the selected country, using the decision-making mechanism of the individual and of the households. The benefit of the article is in particular applied bonding and verification of the relation between the current theories and the practice that is realized through a questionnaire survey. By recognizing these determinants the partial decision-making issues will be clarified and it will open the space for the eventual desired behavior of household behavior in specific Slovak Republic conditions. The conclusions of the article point out that household decision-making is influenced by several factors in parallel, but psychological factors play a very important role. It is clear from the conclusions that Slovak households, by their decision, confirm theories of behavioral economists even when deciding on productive components in consumption.
Research on development of China E-hailing industry
Authors: Wang Xuecheng
Published: January 2019

E-hailing cars have become an important innovation in transportation operations. The E-hailing originated in the US and has developed rapidly around the world. As a laggard, China has experienced remarkable progress in exploring development period, rapid expansion period and adjustment period. The main reason is that China has a large user base, a sufficient labor force, a good network innovation environment, and a relatively relaxed regulatory environment. The new policy formulated by the Chinese government has caused a relatively large constraint on the Ehailing industry. Whether the E-hailing platform can maintain neutrality business and whether it can safeguarding consumer rights while developing the economy is an important challenge.
Practical Input on Bone Tumor Imaging: Pathological Fracture, Risk Features, and When to Contact Orthopaedics
Authors: Anderson Suzanne , Havakeshian Sina , Würzburg Andreas , Lunkiewicz Magdalena
Published: January 2019

Awareness of risk factors associated with impending fracture and its radiologic appearance allows early diagnosis, supports prophylactic surgical treatment, and prevents the multiple complications of a pathologic fracture. Because the femur is the most common long bone affected by metastatic bone lesions, we address this clinically relevant site in this review. The key to early detection of risky bone lesions is familiarity with the possible clinical presentation, biomechanical effects of the anatomical site (femoral head and neck, intertrochanteric zone, proximal diaphysis), and the lesion types (lytic, blastic, or mixed). Awareness of the possible treatment strategies depending on the characteristics just listed allows high-quality targeted reporting.
Ewing's Sarcoma and Primary Osseous Lymphoma: Spectrum of Imaging Appearances
Authors: Papakonstantinou Olympia , Nikodinovska Violeta , Vanhoenacker Filip , Weber Marc-André
Published: January 2019

Ewing's sarcoma (ES) is a rare, highly malignant anaplastic stem cell tumor. Histologically, the tumor consists of uniform densely packed small monomorphic cells with round nuclei. The typical appearance at hematoxylin and eosin (H&E) staining is small blue round cells without any matrix formation. On conventional radiography, ES typically presents as a permeative lesion in the diaphysis of a long bone in a child. A large soft tissue component is another characteristic feature, best depicted by magnetic resonance imaging.

Primary osseous lymphomas are most commonly highly malignant B-cell lymphomas. At H&E histologic staining, the tumor stroma consists of diffuse round-cell infiltrates that resembles the appearance of ES. Although there is no typical imaging appearance of an osseous lymphoma, it should be considered in an adult presenting with a Lodwick grade II or III lesion in the metaphysis or diaphysis of a large long bone, the pelvis, or the vertebral column. Histologic confirmation is mandatory.
Analytical Assessment of the New Roche Cobas t 711 Fully Automated Coagulation Analyzer
Authors: Lippi Giuseppe , Salvagno Gian , Gelati Matteo , Poli Giovanni , Giavarina Davide , Favaloro Emmanuel
Published: January 2019

This study aimed to provide a preliminary evaluation of the analytical performance of the new Roche cobas t 711 fully automated coagulation analyzer, which uses both liquid and lyophilized reagent cassettes. The analytical assessment included analysis of imprecision and linearity of prothrombin time (PT), activated partial thromboplastin time (APTT), and fibrinogen on cobas t 711 analyzer. Test results of 120 routine plasma samples were also compared with those obtained using two other coagulation analyzers (Instrumentation Laboratory ACL TOP 700 and Stago STA-R MAX). The accuracy, imprecision, and comparability of manual and automatic lyophilized material resuspension were also evaluated using 200 routine plasma samples. Overall, automatic resuspension was found to be more precise than, and equally accurate as, manual reconstitution, with coefficient of variations (CV%) three- to sixfold lower compared with manual reconstitution. The analytical imprecision was found to be excellent, as attested by total CV% of 0.7% for PT, 1.7 to 1.8% for APTT, and 1.9 to 3.2% for fibrinogen. Linearity was excellent over a clinically significant range of PT, APTT, and fibrinogen values, displaying correlation coefficients comprised between 0.994 and 0.999. Methods comparison studies revealed that results of PT, APTT, and fibrinogen on cobas t 711 are globally aligned with those obtained using identical plasma samples on IL ACL TOP 700 and Stago STA-R MAX, displaying correlation coefficients of 0.97 for PT, 0.81 and 0.88 for APTT, 0.90 and 0.94 for fibrinogen, respectively. In conclusion, the results of this preliminary evaluation demonstrate that PT, APTT, and fibrinogen on cobas t 711 coagulation analyzer displays excellent performance for routine use in clinical laboratories.
Estimation of Intraoperative Stimulation Threshold of the Facial Nerve in Patients Undergoing Microvascular Decompression
Authors: Feroze Rafey A. , McDowell Michael M. , Balzer Jeffrey , Crammond Donald J. , Thirumala Partha , Sekula Raymond F.
Published: January 2019

Introduction Facial weakness can result from surgical manipulation of the facial nerve. Intraoperative neuromonitoring reduces functional impairment but no clear guidelines exist regarding interpretation of intraoperative electrophysiological results. Most studies describe subjects with facial nerves encumbered by tumors or those with various grades of facial nerve weakness. We sought to obtain the neurophysiological parameters and stimulation threshold following intraoperative facial nerve triggered electromyography (t-EMG) stimulation during microvascular decompression for trigeminal neuralgia to characterize the response of normal facial nerves via t-EMG.

Methods Facial nerve t-EMG stimulation was performed in seven patients undergoing microvascular decompression for trigeminal neuralgia. Using constant current stimulation, single stimulation pulses of 0.025 to 0.2 mA intensity were applied to the proximal facial nerve. Compound muscle action potentials, duration to onset, and termination of t-EMG responses were recorded for the orbicularis oculi and mentalis muscles. Patients were evaluated for facial weakness following the surgical procedure.

Results Quantifiable t-EMG responses were generated in response to all tested stimulation currents of 0.025, 0.05, 0.1, and 0.2 mA in both muscles, indicating effective nerve conduction. No patients developed facial weakness postoperatively.

Conclusions The presence of t-EMG amplitudes in response to 0.025 mA suggests that facial nerve conduction can take place at lower stimulation intensities than previously reported in patients with tumor burden. Proximal facial nerve stimulation that yields responses with thresholds less than 0.05 mA may be a preferred reference baseline for surgical procedures within the cerebellopontine angle to prevent iatrogenic injury.
Evaluation of Carotid Artery Stenting with Distal Filter Protection Device
Authors: Banode Pankaj , Kharche Ashutosh
Published: January 2019

Objectives To assess the use of proximal protection devices in consecutive patients as the preferred means of cerebral embolic protection for primary carotid stenting.

Methods and Results This was a prospective single-center study to evaluate the technical and clinical success of proximal protection devices as the first choice for embolic protection in symptomatic (≥ 50%) and asymptomatic (≥ 70%) carotid stenosis. Proximal protection devices were used for embolic protection in 115 consecutive patients. No patients were excluded for anatomical reasons. The filter used was of diameters 6 mm in all cases (Emboshield NAV filter device, Abbotts Healthcare Pvt. Ltd. [Lake Bluff, Il]). In all cases, self-expanding closed-cell designed stent was used (X-act closed-cell self-expanding nitinol carotid-tapered stent, Abbotts Healthcare Pvt. Ltd.). Plaque characterization was done by using real-time high-resolution ultrasound (HR USG) equipment (Aloka Prosound Alpha 7 [Chiyoda, Tokyo, Japan]) using high-frequency linear transducers (> 7 MHz). Follow-up duration was 30 days. Mean age was 61.9 ± 8.27 years. There was male predominance observed in study accounting for 73 out of total 115 studied population. Fifty-six of 115 (48.89%) treated stenoses were symptomatic. Technical success was achieved in 115 of 115 (100%) cases. In both the cases, additional distal filter devices were used. Carotid stenting was successful in 115 (100%) lesions. This study observed higher number of debris in symptomatic and high-risk plaques. This study also observed higher sensitivity, specificity, and accuracy of updated classification for assessing risk of microembolism (captured debris) (sensitivity 73.91%, specificity 95.65%, positive predictive value [PPV] 91.89%, negative predictive value [NPV] 84.62%, accuracy 86.95%). In our study, minor stroke was seen in three (2.61%) patients within 48 hours, and no adverse events were seen within 48 hours to 1 month.

Conclusion Proximal protection is a safe method as the first choice for embolic protection. It can be used with a high rate of technical success.