An integrated mathematical approach to modeling functional and structural parameters of a mobile technical service was observed in the article, and also, we reviewed their technical and economical work indicators. The authors propose evaluation criteria and the structural scheme of small sized units of technical service machines. For the attached unit option a combining service snap method is described and the service cost analysis in comparison with trailed analogues is made
Education was always an important part of the
development of the individual and society, because
education is the process of the formation of mind and
character. Each level of education currently requires
increased attention, since the quality of life of future
graduates directly depends on the quality of the
provision of educational services. Despite the fact that
most of the educational process is formalized by
educational standards, regulatory documents and local
acts of educational institutions, this area continues to
need both automation and the development of various
models, methods and techniques, the use of which will
greatly optimize the implementation of the educational
process. There are few software products, models and
methods that assess the quality of education and the
educational process in general, aimed at individual
elements of the educational system. In all the existing,
basically, there is only support for working with
bachelors, slightly less often with masters and very
rarely with graduate students. This article describes
methodological approaches to assessing the
achievements of graduate students, as well as an
information system for supporting the educational
process of graduate school
The article considers the mathematical task of calculating
the transient flow of water in the regulation of
concentrated releases of water discharges on stream flows
in lower tails of spillway waterworks. An algorithm,
analytical solutions based on hydraulic calculations of the
process of propagation and transformation of long waves
described by Saint-Venant equations are constituted.
These equations are nonlinear and have no exact
solutions. To obtain approximate solutions these
equations are linearized. The efficiency of spillways
depends on how accurately hydraulic processes
characteristics are measured. Control and direct
measurement of characteristics of hydraulic processes in
natural conditions is difficult, which requires applying
methods of mathematical modeling and simulation
studies of transient processes, which are based on the
algorithms of functioning of transient hydraulic processes
control. Introduction of the developed method for
hydraulic calculation of discharge releases to streams, diverting the water from water discharge structures,
allows optimize idle and non-technological discharges of
water from reservoirs. Considering the highly dynamic
nature of the water flow in the lower tails of the dams at
concentrated releases of water discharges from reservoirs,
development of new methods of hydraulic calculation of
extreme discharges and water depths at the critical
sections of watercourses with transient regime of water
flow is an important task
The best predecessors for sowing grain are grains and legumes, tilled cultures and perennial grasses. The precursor also determines the choice of the tillage type. The imperfection of the working bodies of the machines for soil treatment is the main reason for the increase in the complexity of preparing soil for sowing. In recent years, domestic manufacturers have been producing combined working machines that perform several technological operations in one pass. To prepare soil for sowing grain there have been selected disk units and working machines which were tested on the Kuban State Zonal Machine-Station. They fit well with the existing technology. It is rational to conduct tillage of soil for tall crops and perennial grasses by the disc cutter BDM-4×4. The disc cutter efficiently prepares the soil for seed bed cultivation on tilled precursors in one pass or two passes. It is efficient to conduct tillage on grain precursors by the stubble cultivator KSP-6, by the disc combined unit AKD-3 or DCN - 3.3. After grain predecessors the disc guns prepare soil for seed bed cultivation in two passes, and after perennial grass in a single pass. According to the results of the trials on the Kuban State Zonal Machine-Station the stubble cultivator KSP-6 efficiently prepares soil for sowing in one pass of the unit. The block-module cultivator MSC provides high quality pre-sowing cultivation simultaneously with sowing. There was proposed the method of equipping the unit so that it would provide usage of the data and technical characteristics of the tractor and physico-mechanical properties of the soil for which the technological operation is to be done. The proposed method determines the transmission ratio for which the amount of slipping does not exceed the permissible values in agro requirements. The value of the theoretical speed is calculated for the given transmission. Operating speed is determined taking into account the slip values
Russia starts working on creation and implementation
of the utilization system for different types of withdrawn
equipment. Expediency of creation of this sectoral
system in Russia is proved in the article. Ability
of the system creation is considered. Recommendations
for the ability rise are also given
The subject of study of this work was learning algorithm of neuro-fuzzy systems with different membership functions. In the prior works there are no published studies of such studies, making it difficult synthesis of neuro-fuzzy control system with new objects in the application of biotechnology, including technological agribusiness entities. A comparative analysis of learning algorithms of neuro-fuzzy system with different membership functions using the method of error back propagation and а hybrid method. For this we used a training sample that contains data of temperature and concentration of dissolved gas in the culture liquid: oxygen (pO2), carbon dioxide (pCO2) of a biotechnological process. It is shown that the hybrid method carries out training of a neural network for the number of periods is 23 times smaller than the algorithm back-propagation errors. The studies found that the two-sided Gaussian membership function provides the smallest learning error of the network δ equal of 3,28•10–3, compared to the other, giving the largest error of training the neural network δ=0,138. Therefore, the task of running the fermentation process effective is the use a hybrid method of education and two-sided Gaussian membership functions. According to the research, we can conclude that for the adaptation of neuro-fuzzy network ANFIS and fuzzy inference system Sugeno zero order to solve biotechnological process control tasks microbiological production efficiency is to use a hybrid method of education and bilateral Gaussian membership functions
The aim of the article is to analyze existing quantum
distribution systems, their facilities, physical bases of
quantum objects behavior used in quantum distribution
systems and protocols of quantum keys distribution
Widespread in autonomous systems, including
uninterrupted power supply systems, there are power
static (electronic) convertors: rectifiers and inverters,
used to match the parameters of the electric power
source and the load; they also have a function of voltage
stabilizers. Important question is the calculation of key
performance criteria at the design stage: power losses,
efficiency, reliability, weight and size (for electrical
transport systems). The article discusses the
methodology of the simplified calculation of the basic
criteria of efficiency of inverters and rectifiers. There
are schematic electrical diagrams of power rectifiers
and inverters, and the basic analytical expression for a
simplified calculation of the basic criteria of efficiency
of the converters, including their output filters. Each
year, we improve the technical characteristics of the
probes using new element base, allowing reducing the
level of electromagnetic interference generated by
power electronic devices. We have also shown
perspective directions of the development of power
converter technology by using one-phase and threephase
transformers with rotating magnetic field in their
creation (therefore we increase reliability of operation
and efficiency). A promising direction is the
construction of converters and autonomous systems in a
modular complex, where (in addition to increased
system reliability) we simplify its operation, including
service
The transportation process plays an important role in the
delivery of agricultural products to the consumer. On
how well the fruits are preserved, their grade will
depend, and, consequently, the price of them. It is
known, that the annual damage from losses of
agricultural products in the agro-industrial complex
amounts to 8 billion rubles, according to various
estimates. A large number of different factors affect the
safety of fruits during transportation: temperature,
humidity, smoothness of the vehicle, type of container,
etc. The more factors will have a negative impact on
fruit and vegetable products, the more losses will
ultimately be. The appearance of dents and abrasions on
the fruits gives rise to the formation of foci of rot,
leading to damage to the transported products, and, as a
consequence, reducing the grade. In order to reduce the
losses of fruit and vegetable products in the process of
transportation, the USSR and the Russian Federation
have been and are working on the creation of containers
and ways of transporting pomegranates. All of them, according to the authors, are able to reduce the dynamic
loads that arise during the transportation process and
have a negative impact on the transported products.
However, due to various circumstances in commercial
gardening all these developments have not been
extended
A complete balanced feed mixture includes sunflower cake, silage, beet fodder and roughage that have nutritional value. For preparation and their distribution it is necessary to have the following facilities under provided with reducing energy intensity and improving the qualitative indicators of processes: for the grinding of sunflower cake and beet fodder we need disk shredder plate with a knife, which makes a shock-centrifugal effect on them; silage and roughage – bearnie in which the cylindrical beater with knives and rotary blade rotor with paired cutting knives, respectively, which perform shock-centrifugal influence on them; for dispensing sunflower cake and beet fodders required automatic volumetric dispensers batch cookers operating on open cycle with the working body of the belt; silage and roughage – automatic volumetric dispensers batch cookers operating on open cycle with disc and drum working body, respectively; to mix sunflower cake – universal, mobile rotary mixer with blades periodic operation portion short-term and multi-stage batch mixing in which the material makes circular motions with a high speed of circulation; beet fodder, roughage – universal, mobile paddle mixers with blades of valencianos form of the periodic portion short-term and multi-stage batch mixing in which the material performs a stochastic motion of particles; silage – universal mobile paddle mixers periodic action of short-term and multi-stage batch mixing in which the material makes circular motions with a high speed of circulation of the blades of valencianos form; for distribution of silage and beet fodder – mobile, been feeders with mechanical loading of the feed ration in which the trays with the milling devices; sunflower cake and roughage – mobile, rotary and conveyor feeders with mechanized loading of the feed ration in which the front rotor with a horizontal axis of rotation and the conveyor of the milling devices, respectively