The article is devoted to the topical issue, which is related to simulation of the failures of drives suspensions of the conveyor with suspended belt and distributed drive. A mathematical model of the failure of individual drives of suspensions due to the jamming of the non-drive rollers has been developed. Dynamic characteristics of the basic version of a conveyor-feeder with suspended belt were simulated.

The questions of ?alculation of parameters of drives are considered in this article. An approach based on the technologies of functional semantic networks was used. The intelligent system Compact is described, which performs multifactor optimization of the radial-plunger reducer parameters. The problem of calculating and designing drives based on the use of a functional semantic network is considered.

In order to make the best use of the carrying capacity and capacity of universal containers, as well as to ensure rational transshipment and reduce downtime of vehicles, the existing methods of delivering bulk cargoes are analyzed. The advantages and disadvantages of methods ensuring timely handling of cargoes are determined. The subject of the study is the structure of technology for the delivery of bulk cargo transported in containers. The purpose of the study is to improve the delivery system based on a more efficient structure of the supply chain in the field of automated loading and unloading of bulk goods into containers. The research methods are based on the analysis and generalization of the existing methods of collecting the initial information, the methods of its processing in support of the choice of the most rational technology for the transport of loose goods in containers.

The article is devoted to the problems of mathematical-cartographic modeling of the density of building as the most important indicator of urban planning. The research was conducted on the example of the territory of Proletarsky area of the city district of Saransk. Modeling is performed in the ArcGIS 10.0 based on the created electronic layers and spatial databases. Characteristics of the housing stock of Proletarsky area of the city district of Saransk was used as a statistical data. The map of the functional zones of the General Plan of the city district of Saransk and the geoimage from the Yandex.Maps service (the SAS.Planet program) served as the initial map data. The projection of Gauss Kruger, coordinate system SK-42 was used for the projected maps. The density map of the Proletarsky area of the city district of Saransk was obtained as a result of the implementation of the stages of mathematical and cartographic modeling. An experimental research was conducted on the choice of the most optimal cell size for a regular grid when constructing a cartographic model. The compliance of the density of the building of the Proletarsky area with normative indicators was revealed by the authors.

In the article the mathematical model and the technique of the accelerated optimization estimation of the main technical characteristics of the passenger aerial ropeway (step and height of intermediate supports, tension force of the bearing ropes) are developed. To calculate the optimal values of these technical characteristics, the task of technical and economic optimization was previously developed. The optimization task was based on the minimization of the objective function — the cost of the aerial ropeway construction, taking into account a number of structural constraints. The accelerated optimization estimate is based on the fact that the position of the minimum point of the objective function should be searched along the line of one of the mentioned constraints – constraint on the minimum of tension force of the bearing ropes. This allowed us to propose two ways of accelerated optimization evaluation: 1) reduction of the dimension of the optimization problem; 2) replacement of the search for the minimum of the objective function by the solution of a nonlinear algebraic equation. The proposed algorithm of accelerated optimization evaluation of the main technical characteristics of the passenger aerial ropeway allows to obtain exactly the same values as the result of solving the previously developed problem of technical and economic optimization, but with the use of more simple mathematical methods.

During many years of statistical observations, the causes of almost one third of all emergencies, accidents, incidents and accidents at hazardous production facilities are organizational measures directly related to the presence of the human factor. The main tasks of the state policy in the field of industrial safety are: improving the requirements, training programs, certification and verification of knowledge of managers and specialists of operating organizations; development and implementation of information technologies that enable interaction with operating organizations, to optimize the acquisition, storage and analysis of information on production control over observance of requirements of industrial safety, systems safety management; introduction of risk-based approach in the organization of Federal state control (supervision) in the field of industrial safety. The ways to improve the efficiency and quality of certification of industrial safety, through information and communication technologies, allowing to introduce uniform requirements for training programs, to test the knowledge of managers and specialists for certification commissions of organizations, using a risk-based approach.

Plastics industry have many major developments in the last two decades resulted from the increased utilization of plastics in various sectors. One of the most common used plastics is the thin plastic bags which used usually for packaging. However the disposal of the waste plastic bags in large quantities constitutes a real environmental problem. Hence, recycling waste into useful products is considered one of the most sustainable solutions to this crisis so that research into new and innovative uses of waste materials is continuously advancing. This paper studies the Compressive Strength of Plastic Waste Bituminous Concrete for Road Construction. The plastic waste was added to the bituminous concrete in increasing percentage and Marshall Samples were prepared. These samples were tested for compressive strength at 25°C and 60°C i.e unconditioned and conditioned samples. It is observed that the compressive strength of sample significantly increases up to 8%, 6% and 12% for dry process, wet process and combined process respectively for LDPE and HDPE type of waste plastic.

There was suggested a probabilistic mathematical model of tractive effort distribution among the drives of multidrive belt conveyors. This model takes into account (in an inverted way) speed variations of different points of tractive and carrying belt forms using an artificial increase in probabilistic interval boundaries of slide departures of drive engines. Taking into consideration the given mathematical model, an integrated approach to traction calculation of belt conveyor of conventional construction and random configuration is formulated. This approach is based on presentation of units of the traction calculation process in the form of classifying characteristics with the corresponding mathematical description. The set of these classifying characteristics for each unique engineering case forms the corresponding specific equation systems of traction calculation.

In article was formulated and solved the problem of conditional nonlinear technical and economic optimization of the distance between intermediate supports, uniform in height, during the design of the cable metro lines in highly urbanized city environment. The optimization problem involves a single-criterion objective function that expresses the cost of construction of the cable metro line (total cost of intermediate supports and their foundations, traction and carrying steel cables and technical equipment). The specified objective function subject to minimization by finding the optimal combination of the distance between intermediate supports and tension carrying ropes with accounting constructive, modal, structural and planning constraints in the form of nonlinear inequalities. The optimization algorithm was based on the direct method of optimization type, Hooke-Jeeves, which was modified taking into account the need of varying the height of intermediate supports with a constant step equal to the step of unification. When constructing the objective function were considered three possible forms sagging of carrying ropes, which can be implemented for various values of the efforts of their tension. Analysis was done of the influence of the step unification and minimum size of intermediate supports on their optimum step, the cost of intermediate supports, the cost of 1 km cable metro line for different values of the angle of the longitudinal slope of the surface relief along the cable metro line. The graph of height of unified supports from the angle of the longitudinal slope of the surface relief has discrete-step type. With the increase of the step unify the discreteness increases: the width of the range of angles of the longitudinal slope of the surface relief within which the height of the supports remains constant, increases. The graph of step installation of unified supports along the cable metro line from the angle of the longitudinal slope of the surface relief also has discrete-step type. The transition to a larger height unified intermediate supports determines the need for installation of supports with a large pitch. Its value then begins to decrease monotonically with further increase of the angle of the longitudinal slope of the surface relief until it needs to transition to the new size of supports. Synchronous change in the optimal values of the height and step of the installation of intermediate supports, depending on the angle of the longitudinal slope of the surface relief leads to the fact that the optimal cost characteristics of the cable metro lines are smooth functions. It has an extreme character with a minimum at angles of inclination of the surface elevation ~5 degrees, which is associated with the form of sagging of the load-bearing ropes. Unification of intermediate supports has little effect on the optimal cost characteristics of the cable metro lines. Even for a sufficiently large step of the unification the largest difference in optimal value is almost insignificant: it lies in the range of 2…3%, increasing with increasing the angle of the longitudinal slope of the surface relief and unit cost of the intermediate support. Unification of intermediate supports according to the height and their step practically does not affect the optimal value for horizontal tension on the load-bearing ropes. It determined mainly by the angle of the longitudinal slope of the surface relief. Deviation of horizontal tension on the load-bearing ropes for the nonstandard supports and the unified supports within the range of angles of inclination of the terrain surface 0…60 degrees is not more than 0.5 to 0.8 %.

For modern food safety control are using techniques that allow to determinate a large number of components. So for determination of pesticide residues in fruits and vegetables commonly used methods of gas and liquid chromatography with time-of-flight mass-spectrometric detection. This system allows to carry out quantitative determination several hundreds of pesticides and their identification by the characteristic fragments of the mass spectrum. The main problem when using mass spectrometric detection is a matrix effect, which is caused by the influence of matrix components extracted with pesticides from the sample.In this work, attempts have been made to reduce the influence of the matrix in the analysis of pesticide residues by high performance liquid chromatography with time of flight mass spectrometry (HPLC / TOFMS).

At the present time, the description of the joint work of multi-component, high-quality concretes in the framework of the structural and simulation modeling of cement composites is a very topical task of building materials science. In the context of the solution of the above problems, theoretical aspects of structural and simulation modeling are presented on the example of the developed program «Concrete-technology», which allows to predict the strength properties of multi-component high-quality concrete at the macro structural level.