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The properties of sorbents obtained on the basis of hydrophobized autumn fallen leaves, conditions for its hydrofobization, allows to obtaining sorbents with maximum petroleum products sorption capacity have been studied. It was found that the investigated sorbents have sorption capacity comparable with those for industrial oil spillage collecting materials.

The acidic surface properties of synthesized solid catalysts WO3/TS (TS – titaniumaerosil support), Cr2O3/TS, ZrO2/TS for the process of rapeseed oil heterogeneous catalytic transesterification with ethyl alcohol were studied, compared the results of oil conversion degree.

Described the study of influence of electric-sparkling steel tube surface treatment method on the painted coatings adhesion to the metal surface and on the rate of its corrosive destruction in the chamber of saline mist.

For quality control elements of aviation technology that uses radiation, ultrasonic, vortex-current, and other methods. Probability of detecting defects in the different methodsare not the same and depends on the different causes of defect formation. Thus objectivitycontrol depends on the awareness of methods of non-destructive tests, which areconsidered in this work.

This paper considers the method of phantom nodes to improve the convergence of trigonometric interpolating polynomials, based on the compression of a segment of interpolation and adding a certain number of phantom nodes to the sequence of a function values. The results of test calculations correspond with the theory and demonstrate the efficiency of the considered methods.

The basic principles together with modern approaches and tendencies of mathemati-cal modeling of turbulent wall shear flows are described, discussed and analyzed.Several perspective concepts of turbulent viscosity coefficient mathematical represen-tation for both typical and special modeling cases, proposed and developed by au-thors are presented together with their advantages demonstrating

This paper examines and analyzes the decision of selecting approach to routing algorithms based on the components analysis of the sensor network. Showed comparison of the effectiveness between probabilistic and classical approaches

Method of construction of mathematical model mobile robot zone (img 1) makes formation of actor-agent which is defined by a tabular form and agent which is described in an analytical form based on the quantitative and qualitative information which is entered by the operator and data from robot sensors. Thus synthesized mathematical description of relationships tasks verbally using attribute “Name”.

Dynamic uninterruptible power supply can solve the problem of power supply in case of accidents in the power supply system and will improve the quality of electric power by the regime of «conditioning network»

A new approach of gear fault diagnosis based on continuous wavelet transform is presented. Continuous wavelet transform can provide a finer scale resolution than orthogonal wavelet transform. It is more suitable for extracting mechanical fault information in aviation gas turbine engine.

The method of converting the compound dynamic system to the branching dynamical system with transient size of state and control vectors at a moment of structural changes is proposed.

This article is devoted to actual problems of a computer appliance implementation of neural-like systems in the context of specialized computer networks. The article proposes the expansion of the minimal interaction zone in the surface layer with gradual clustering – froth-method. The method considered in growing networks, using the algorithms of cellular structures and the growing neural gas., This article is devoted to actual problems of a computer appliance implementation of neural-like systems in the context of specialized computer networks. The article proposes the expansion of the minimal interaction zone in the surface layer with gradual clustering – froth-method. The method considered in growing networks, using the algorithms of cellular structures and the growing neural gas.

The use of Continious Level of Detail (CLoD) approach for visualization of flight over the huge landscape is considered. Foe the tasks of visualization of aircraft flight, it is necessary to provide acceptable performance at high speed of movement. In order to achieve this goal, the algorithm of phased processing of chunks of the landscape is offered, The use of Continious Level of Detail (CLoD) approach for visualization of flight over the huge landscape is considered. Foe the tasks of visualization of aircraft flight, it is necessary to provide acceptable performance at high speed of movement. In order to achieve this goal, the algorithm of phased processing of chunks of the landscape is offered.

The problem is possibility of gas turbine engine compressor blades fatigue strength improvement by their magnetic abrasive machining., The problem is possibility of gas turbine engine compressor blades fatigue strength improvement by their magnetic abrasive machining.

Possibilities of correction of inertial navigation systems from correlation extreme navigation systems, which work by terrain relief, were considered. Methods of investigation are mathematical and programming simulation. At simulation modeling the studied system is replaced with its simulator, with what machine experiments are made. The modeling usage allows estimating of the system performance, to carry out the most efficient coefficients for INS correction.

A new approach of leading edge diagnosis based on optic fiber injection into the composite materials is proposed. The result of semi-natural modeling the system components is provided.

We analyzed the results of handling of amplitude parameters of real resulting signal of acoustic emission by friction of surfaces, made of composite material. Transition of the friction assembly, which precedes the stage of catastrophic wear and tear, brings to rise of speeds of change of amplitude parameters of acoustic emission resulting signal., We analyzed the results of handling of amplitude parameters of real resulting signal of acoustic emission by friction of surfaces, made of composite material. Transition of the friction assembly, which precedes the stage of catastrophic wear and tear, brings to rise of speeds of change of amplitude parameters of acoustic emission resulting signal

The article presents a method of thrust and specific fuel consumption of air-breathing engines determination. The method is based on measuring of instantaneous fuel flow rate, compressor delivery total pressure, atmospheric pressure and using of the mathematical dependences among listed and main gas turbine engine parameters.

Maintenance program is essential for all modern aircraft and aircraft engines and may include continuous and periodic monitoring of performance, automated periodic inspections, regulations eliminate failures and faults handling. Each component of the program is characterized by a number of parameters that are part of the performance., Maintenance program is essential for all modern aircraft and aircraft engines and may include continuous and periodic monitoring of performance, automated periodic inspections, regulations eliminate failures and faults handling. Each component of the program is characterized by a number of parameters that are part of the performance

Experimental equipment, which consists of six-component combined weights of straingaugesting balance type, calibration device, information collecting and processingsystem, coordinate device for determination of air stream parameters, additionalequipment for study of propellers.

In the article discusses methods for detecting and combating DDoS (Distributed Denial of Service) attacks.

The authors offer a pre-selection preliminary choice of methods of optimal search of information protection tools from unauthorized access in computerized systems to ensure compliance with the existing requirements of the information protection in these systems in order to facilitate this choice and reduce development time of complex systems of information protection in AS.

New method of the assessing suitability of the human operator extreme activities isproposed. It is based on a three-component statistical criterion. In evaluating thesuitability of an operator the stability of a generalized estimate of ratio of energy ofthe biological signal can be used. As a "benchmark" standards the indicators of thepsycho-physiological state of a group of operators having a positive long experienceare accepted. If number of samples obtained in the experimental study is limited, thento improve the reliability the robust procedure of estimation is proposed to use.

To improve the efficiency of information hiding in the structure of vector images, thetemplate method of data hiding is proposed in this work. Hiding data behind thetemplate method performed by a gradual breakdown of Bezier curves segments, usingpreassigned table of correlations of different values of the template elements withdifferent steps of Bezier curves. The proposed method is compared with the existingmethod of bitwise hiding data in vector images., To improve the efficiency of information hiding in the structure of vector images, the template method of data hiding is proposed in this work. Hiding data behind the template method performed by a gradual breakdown of Bezier curves segments, using preassigned table of correlations of different values of the template elements with different steps of Bezier curves. The proposed method is compared with the existing method of bitwise hiding data in vector images.

The problem is evaluation of possibility to support gas turbine engine blades airworthiness by their fatigue strength test after welding repair., The problem is evaluation of possibility to support gas turbine engine blades airworthiness by their fatigue strength test after welding repair.

There are two large groups of sources of uncertainty at various stages of construction of neural networks. These groups are discussed in the article andrecommendations for their reduction have been proposed.

It is shown experimental and calculated fatigue life of several high-temperature chrome-nickel alloys for gas turbine engine "hot part" components at critical points. It is assumed that the specimen materials are tested at the regimes maximum close to operating conditions of the components at the critical points which limit the useful life and specified life of gas turbine engines.

The software and hardware complex, i.e. an automated expert system, allows a physician to classify operators according to their category of temperament and rigidity; to realize the analysis of received quantitative parameters of the electroencephalogram; to diagnose operator’s psychophysiological state of cerebral cortex.

This article is proposed to solve the problem of effective management of electricity consumption airport. As results will ensure the efficient use of electric energy receivers airports contribute to the equalization of load demand energy systems that will ensure proper operation and minimize costs in the face of rising electricity prices.

The characteristics of the helicopter as an object hovering stabilization under the action of external discrete factors. That the model of acceleration change evaluation of the helicopter using an extended Kalman filter EKF.

The possibility of using the integral method of calculating of the gas ejector considering uneven flow along the mixing chamber.

The problem of preparation of data for neural networks training to recognition of a technical state of gas turbine engines is considered. These data consist of train and test sets. These data are received as result of mathematical simulation of engine operation process. They should include registered parameters of engine operation process, represent wide range of modes and exploitation conditions, enclose measurement errors of these parameters.

The article deals with the requirements for infrastructure electronic document management systems (EDS), namely, engineering infrastructure, as a combination of hardware, software and technology sites that provide information and analytical support core activities of higher education institutions (HEIs), analyzes the components of infrastructure SED . It is concluded that EDS infrastructure should create an integrated collaboration environment, to provide complete solutions (organizational, architectural, communications, software, etc.) in the area of collaboration, allow technology to solve complex problems at any organizational level.

This article provides basic information about the organization and technological support of the concept of e-government. Basic technological and administrative challenges of introducing the concept e-government in Ukraine

Tthe application of style in software development is introduced. The task of using programming style is considered. The use of style in programming requires observance of its rules when writing the program texts. In order to minimize the scope of work associated with the use of style, one should apply new means. In this article, the application of ontologies is described., Tthe application of style in software development is introduced. The task of using programming style is considered. The use of style in programming requires observance of its rules when writing the program texts. In order to minimize the scope of work associated with the use of style, one should apply new means. In this article, the application of ontologies is described.

Simulation results of flow on the plate in order to calculate the boundary layer thickness are presented in the work. Comparison results of numerical and physical experiments and analytical solution are given.

The materials deals with the approaches to the information system construction for analyzing work complexity. The author considers business logic and access logic to the database, as a basis of software implementation and in future presentation logic., The materials deals with the approaches to the information system construction for analyzing work complexity. The author considers business logic and access logic to the database, as a basis of software implementation and in future presentation logic.

The influence of organic and inorganic additions on the formation rate of the silicate gels standard systems – sodium silicate solution in model fresh water was studied. As a result of the experiments were selected optimum concentrations of additives - gelation time regulators

In article, the author describes in shot the main task and structure of job model forneeds of Ukrainian trade market. The author have been working for a long time onthe basic methods of functional job model, its components and main features ofmodeling process of complex social technical system «human-job» from the creativepotential prospective.

There are constructed 3D models of experimental stand of Fundamental MachineDesign Department and oscillograms are analyzed by average value of the dynamicloading chain contours

Natural evaporation of individual hydrocarbon liquids and their mixtures and efficacy of ultra-light protection coating system that prevents evaporation losses during storage were investigated. It was shown that the protective layer during its formation forms a molecular complex that is simultaneously insulating, coating and minimizes evaporation of hydrocarbon liquids.

Methodology development of IT-infrastructure of flight simulator is proposed.Methodology is based on principles of IT Infrastructure Library. An example of theuse of method is presented., Methodology development of IT-infrastructure of flight simulator is proposed. Methodology is based on principles of IT Infrastructure Library. An example of the use of method is presented.

We investigate the necessary condition for excitation of long-periodic Goodwin’s oscillations and short-periodic sawtooth oscillations in the Goodwin model of the business cycle with fixed delay in the induced investment and in the consumption.

Behaviour of complete energy of the stochastic mechanical system is the subject of thisinvestigation.

We consider some estimates for integral moduli of smoothness of arbitrary order forthe function realizing conformal mapping of the unit disk onto the domain bounded bythe smooth Jordan curve and for the function realizing conformal mapping betweenthe domains bounded by the smooth Jordan curves.

On the basis of the apparatus of vector- tensor analysis summarizes integral repre-sentations of the solutions in the form of combinations of surface integrals of poten-tial type not only the primary challenge of vector analysis for the surface vortices dis-tribution and intensity used sources of mass, but also the full Navies - Stokes equationfor flow past an arbitrary system threads bodily Profile viscous incompressible fluidflow and also near the interface.

In this paper we establish the conditions for oscillations of the solutions of linear se-cond order differential equations, provided the solutions of the corresponding differ-ence equations oscillate. We also establish the converse result, namely, when the os-cillation of the solutions of difference equations implies the oscillation of the solutionsof the corresponding differential equations.

General information and basic parameters of wireless sensor network nodes, their mathematical model.

In this paper, the solution search problem of the optimal allocation of resources between projects considered. Model building a project plan developed aviation equipment modernization. The method of solving the problem, suggested based on immune algorithm allows display to achieve the required accuracy of the results for planning of modernization and feasibility of practical recommendations.