A survey of the frame-panel building was carried out, in which ecowool was used as the heat-insulating material. A study was made of the moisture state of wooden frame walls and attic floors. Ecowool samples were taken from various sections of the wall. No mold was detected on material samples. In this case, the sorption humidity was not more than 16%. The results of laboratory tests of ecowool showed high persistence of density and coefficient of thermal conductivity during long-term operation. Tests were conducted to determine the effect of moisture on the change in the physical and technical properties of ecowool. The research results were processed by statistical methods. As a result of the study, it was found that moisture does not accumulate in the ecowool layer of the examined frame walls and attic flooring, but goes out through the insulation and elements of the building envelope. The conducted studies allow us to predict the preservation of the heat-shielding properties of ecowool during operation for a long time
Keywords: ecowool, durability, sorption humidity, density, coefficient of thermal conductivity
The huge part of Russia territory is located in the permafrost zone. Mastering of this area is important step for Russia, because the mining is developing at a rapid pace, and mostly oil and gas. There is its own specificity in the construction of buildings and structures on permafrost. Peculiar properties of foundation in the permafrost zone are considered in this article.
Keywords: foundation, permafrost, thermosyphon, oil storage, oil and gas industry, drilling, ammonia
The work is devoted to the study of the main aspects of the use of expert systems in the metallurgy industry. An overview of current production problems is given, as well as prospects for the development of automatic decision-making systems based on formalized expert knowledge using modern data processing tools
Keywords: production processes, metallurgy, control actions, expert systems, technological personnel, production indicators, software implementation, modeling, interference, training complexes
The article presents a program of comprehensive construction and technical expertise of the structures of an industrial building. The features of the construction and technical expertise of the structures of the agricultural warehouse of mineral fertilizers are described. An algorithm of the sequence of actions for the technical expertise of the structures of the object is developed. Measures have been developed to repair and restore the working condition of damaged structures
Keywords: construction and technical expertise, defects, bearing capacity, structural repair, property management
The publication is devoted to the task of developing a demo-genetic model of the adaptation of pests to transgenic and hybrid agricultural crops, taking into account the type of taxis. An assumption is introduced that the dynamics of hybrid agricultural crops can be investigated using demo-genetic models. A description of the problem is given in accordance with the characteristics of the growth of biomass of agricultural crops and the dynamics of pests, as well as taxis species. The modeling of the processes of fast and slow taxis depending on the behavior of pests at a particular point in time is described in detail, taking into account the type of their genotypes that affect the acquisition of mutations. The paper describes the features of the physiological structure and life cycle of insect pests, affecting the prediction of their spatial concentration and, accordingly, the prediction of productivity; the possibilities of their application in mathematical modeling.
Keywords: demo-genetic model, taxis, transgenic agriculture, hybrid, pest, biomass, diffusion
This work outlines software packages that are capable of dealing with nonlinearity of the analyzing structure. Brief introduction of the software and its beginning in the history. Also explained the difference of linear and nonlinear analysis performed on the structure. Defined which software packages are for media and analyzing problem (structure). Similarly, descriptive study was done to understand advantages and disadvantages of main analyzing tools ANSYS, ABAQUS, SOLIDWORKS. In addition, the work looked into which one of the mentioned tools have its own distinguish functions. Finally, the results data of all three software were compared with each other.
Keywords: nonlinear analysis, numerical analysis, ANSYS, ABAQUS, SOLIDWORKS
This article presents the results of studies on the possible use of hoisting-and-transport rope complexes in the aftermath of emergency and environmental situations. The advantages of using self-propelled transport and freight carriages based on soft pneumatic bearings for rescue operations are considered. An algorithm is described for a software package designed to automate the process control of a freight-carriage used to lift and move cargo at predetermined coordinates. To implement the functioning of the software package, a processing technique was used for incoming and outgoing data, input and output streams, data collection centers using Java TCP / IP technology. An example of a graphical interface of the software.
Keywords: software package, control automation, hoisting and transport mechanism, protocol, JAVA, algorithm, environmental consequences, cable system, local coordinates
It is shown that in the analysis of self-determination it is expedient to use the tools of cognitive modeling. This allows us to identify all the cause-and-effect relationships that provide logical and semantic focus on the desired (target) result of a particular system. The problem of analysis is a special case of the study of the fundamental philosophical category of development, as the relationship and interaction of "things, properties and relations". Formally, the analysis can be reduced to the procedure of semantic and causal interpretation of the original cognitive model. The model allows to study the internal structural organizations that affect the implementation of self-determination of the system. Analysis of self-determination in turn opens the way to effective cognitive modeling, construction of dynamic models, application of game and scenario analysis methods.
Keywords: cognitive analysis, cognitive model, structure, system, self-determination, management, interpretation
The work has formulated a justification for the necessity to perform works aimed at solving the tasks of providing technological preparation of composite structures production by means of automation based on the application of modern information and computing systems. The characteristics and key aspects that determine the efficiency of automation at the stage of technological preparation of production are highlighted. Justification of the relationship between the processes determining the process formation and its efficiency is given
Keywords: automation, technological process, technological preparation of production, composite materials, composite designs, neural networks, modeling, process parameters
The analysis of the existing system of export traffic management in the port transport and technological system of the region. The issues of violations of the terms of delivery of goods on the railway network and in the regional context are considered. The statistics of the trains left behind from the movement on the range of the railroads is studied. On the example of the North Caucasian railway (SKZHD) serving the ports of the Azov-black sea basin and consignees of the southern region, the issues of coordinated delivery of goods are considered. A systematic presentation of the issues of application and development of modern logistics and information technologies to solve the problems of management, planning and optimization of export traffic in rail and sea traffic is given. The analysis of the implementation of the main tasks solved with the help of Traffic information and logistic system (DILS) control unit Road logistics center (DLC) SKZHD.
Keywords: Analysis, delivery time, reliability of delivery, railway transport, seaport, financial risk, transport services, competitiveness
The modeling of a hollow core slab in the finite element complex Ansys is considered. The construction of a 3D model is considered. Numerical modeling was carried out under static loading of the floor slab. The influence of material properties on the parameters of the stress state and deflection of the structure is investigated. Based on a numerical experiment, an approach to assessing the characteristics of a structure is constructed.
Keywords: hollow core slab, static analysis, modeling, FEM, Ansys, stress state, deflection
Today, any production process is a means of making a profit for an organization. With this approach, products can be represented as the result of the conversion of input resources into output products. To obtain new information about the product, you can use the cybernetic approach, which allows you not to study the complex physico-chemical phenomena that occur during its production. The cybernetic approach helps to see many different factors that affect the quality of the product. All these factors are important to consider when developing the documentation of the quality management system (QMS). The main task of the QMS is to prevent the influence of negative factors on the quality of the goods. This problem can be solved with a tool called “Failure Type and Effects Analysis (FMEA)”. In the article, with the aim of introducing in the production of building products and structures, the cybernetic model "black box" was considered. Also presented is an analysis of the types and consequences of nonconformities (FMEA analysis), which allows you to see the most significant causes of nonconformities and develop corrective measures for them. The article was published as part of the implementation of the program of the International Forum "The Poor May 1945"
Keywords: quality, cybernetics, defect, analysis, QMS, metal, fencing, construction, products, FMEA.
The paper focuses on energy efficient reconstruction of construction systems by means of their upward extension using modular spatial structures. It is further noted that the existing contradictory definition of the term “modular structures” necessitates classifying modular structural elements by spatial dimension, type and size, weight, degree of prefabrication, constructability and environmental safety. A list of the world’s leading manufacturers is provided featuring modular spatial structures to be used in the construction of new buildings and reconstruction of existing buildings. Also, the paper underlines the importance of using added stories in making modular roof structures of lightweight metallic structures (LMS) and lightweight thin-wall steel structures (LTSS) and provides an overview of the main types of modules, pointing out the key benefits of modular structures.
Keywords: modular building structures, energy efficient reconstruction, upward construction, structural and non-structural modules, constructability
The basic principles of methodological support for the process of automation of technological preparation of production of products are formulated from the position of identifying the relationship of technological parameters of processing with the target properties of the product. The architecture of the neural network model is proposed and the basic principles of its construction are formulated.
Keywords: automation, technological process, technological preparation of production, neural networks, modeling, technological parameters, target properties
First-principles simulation of ultrathin amorphous carbon films has been performed. Nanohybrid graphene-C60 systems were considered. Total energy calculations were performed using pseudopotential method within density functional theory. Local atomic structure and electronic energy spectrum of the systems were studied. It was demonstrated that fullerene-graphene interaction results in significant deformation of their local atomic structure. Obtained results are in good agreement with experimental X-ray UV spectra of hydrogenated amorphous carbon
Keywords: Phase-change resistive memory, ab-initio simulation, pseudopotential method, Kohn-Sham method, graphene, fullerenes, amorphous carbon, atomic structure, electronic structure, adsorption energy