The algorithm for diagnosing leaks of the target product under conditions of uncertainty for the hydraulic system

Modeling of systems and processes, Год журнала: 2024, Номер 17(2), С. 71 - 82

Опубликована: Июнь 28, 2024

An algorithm for determining the presence or absence of leaks in functioning hydraulic systems is considered, based on existing methods location and volume such leaks. Based collected data parameters systems, it proposed to create a statistical model with all required performing calculations. The emphasis placed fact that necessary take into account features system question, depending its purpose technologies used. Mathematical models leak diagnostics are including identification facts existence use mathematical determine size In this article, research focuses detection unknown amplitudes verification two alternative hypotheses system, taking interference from stochasticity demand. It noted transition task verifying multiple pattern recognition provides deeper more comprehensive analysis This will allow accurate efficient unusual provide reliable protection systems.

Язык: Английский

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Modeling of the occurrence of risks under hazardous working conditions for construction organizations

Modeling of systems and processes, Год журнала: 2023, Номер 16(2), С. 33 - 47

Опубликована: Июнь 14, 2023

The working conditions characterized by the presence of harmful and dangerous factors production environment, as well functional state organism builders various professions are considered. selected levels labor process in warm cold periods year physiological indicators characterizing dynamics changes body investigated. following tasks were solved work: hygienic features construction works determined leading identified; quantitative qualitative characteristics causes their formation studied; occupational workers with an assessment severity intensity given. article notes that whole complex affects capacity professions. modeling risks hazardous builders, determination risk adverse events at workplace, was carried out. program “Labor Protection" is Based on conducted research, measures have been developed to create safe conditions, improve efficiency maintain health builders.

Язык: Английский

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Simulation-stochastic modeling of the movement of human flows during the evacuation of people from the hospital building

Modeling of systems and processes, Год журнала: 2023, Номер 16(2), С. 48 - 61

Опубликована: Июнь 14, 2023

General data on fires in the Voronezh region are given. The general statistics medical institutions considered. fire safety assessment was carried out example of VGKBSMP No. 10. For this purpose, information about object study is provided. analysis causes 10 out. necessary initial for calculating time evacuation people from hospital rules presented. existing life support services and their tasks case peculiarities hospitals event a with disabilities have been revealed. regularities movement human flows diagrams flow at borders neighboring sections routes given, which observers observed indicated. across border adjacent path, as well features merging separation flows, investigated. Possible options simulation-stochastic modeling results calculations were using Fogard program.

Язык: Английский

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Mathematical modeling of individual flow movement of people from the maternity hospital building in case of fire

Modeling of systems and processes, Год журнала: 2023, Номер 16(2), С. 62 - 74

Опубликована: Июнь 14, 2023

Statistical data on the number of fires and people killed in Russian Federation for period under review objects are presented. The basics fire safety maternity hospitals considered. assessment hospital question was carried out. protection system building, smoke alarm systems used, fire-fighting water supply, as well information characteristics electricity, heating ventilation given. Mathematical models used to calculate evacuation time from building coordinate scheme a possible variant placement who at given routes is density flow evacuating stream within considered area analyzed. basic calculation formulas design buildings, taking into account organization movement human flows, program Fogard complex, which implements an individual model developed basis mathematical building. plan typical floor initial calculations. As result, main goal work achieved, analyze flows clarify estimated needed rescue evacuees

Язык: Английский

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Modeling the distribution of the channel resource of a corporate communications network

Modeling of systems and processes, Год журнала: 2025, Номер unknown, С. 28 - 44

Опубликована: Март 20, 2025

Models of queuing systems in various spheres society are considered. Graphical models distribution the channel resource corporate communication network and their parameters have been developed. The results simu-lation modeling estimating chan-nel a presented. computational experiments con-firming possibility defining boundary field sustainable management information processes with lossless service discipline for distri-bution resources modern developed, which allow taking into account bandwidth channels, load, net-work traffic distribution, planned quality service. random variables incoming calls laws functions that make up process under study determined. developed take time pro-cessing by communications infor-mation messages from subscribers users, simulate subscriber blockages event an un-planned increase intensity load on commu-nication channels net-work. it possible to evaluate effectiveness sys-tems technologies specific communica-tion development proposals opti-mizing its functioning

Язык: Английский

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The Root Collar Diameter Growth Reveals a Strong Relationship with the Height Growth of Juvenile Scots Pine Trees from Seeds Differentiated by Spectrometric Feature

Forests, Год журнала: 2023, Номер 14(6), С. 1164 - 1164

Опубликована: Июнь 5, 2023

This study is intended for forest owners considering options to increase the efficiency of production seedlings in automated nurseries. In short rotation technology Scots pine (Pinus sylvestris L.), was integrated process grading seeds by spectrometric features, followed fall outplanting containerized a restorable post-pyrogenic site. There are studies effect viable seeds, but negligible amount testing has been conducted on seedling’s field performance from these seeds. It very important us evaluate morphogenesis juvenile trees relation change morphological features—increase root collar diameter (RCD-increment) and stem height (SH-increment)—in second third growing season outplanting. To determine nature interaction between independent (RCD increase), dependent (SH-increment), categorical (seed categories timespans) variables, regression analysis performed using R statistical software. All coefficients linear models statistically significant at 1% significance level, all positively associated with an seedling height. On average, RCD increment 0.1 cm causes SH-increment 0.72 ± 0.16 (p = 9.779 × 10−6). addition, 2020, compared 2019, 5.46 0.37 < 0.001). The seeds’ differentiation into strongly correlated Thus, order improve plant propagation protocol, it seems advisable first condition accordance feature, then apply coating (by pelleting or encapsulating) storage seeding conditions. For medium-term assessment seed future, 5, 7 10 seasons controlled.

Язык: Английский

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How Can the Engineering Parameters of the NIR Grader Affect the Efficiency of Seed Grading?

Agriculture, Год журнала: 2022, Номер 12(12), С. 2125 - 2125

Опубликована: Дек. 10, 2022

The automated grading of Scots pine seeds in the near-infrared wavelength region (NIR grading) is a starting point for further actions, such as coating and priming. This reduces time financial costs increases accuracy seed viability classification compared to invasive techniques. NIR-based wave reflected from each must be detected processed with sufficient accuracy. To focus beam, we used fiber-optic Bragg grating, mirror, diffraction grating. For focusing option based on DOE matrix, one experiment 20 runs (n = 20) three replicas (m 3) run was conducted. In replica, 100 conditioned non-conditioned (NC + NNC 200) selected randomly five samples weighing 50 g seedlot 1 kg extracted cones collected natural tree stand. Three experiments were conducted NIR using an optoelectronic device. An adequate regression model efficiency function obtained. functions included following arguments: angle incidence optical seed, height pipeline. influence inclination light source relative plane movement quality prevails over other factors. allows separation according index, which important, since dead petrified (possibly up 25%) may occur batch, cannot eliminated by either size or mass. peak achieved combining average grader engineering parameters: 968–973 nm 44–46 degrees beam at pipe 0.18–0.23 m.

Язык: Английский

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Development of software products using character and string variables in an object-oriented environment

Modeling of systems and processes, Год журнала: 2022, Номер 15(3), С. 44 - 54

Опубликована: Окт. 5, 2022

The features of developing software products using symbolic and string variables in the object-oriented C++ Builder environment are considered. syntax is considered detail various examples when C++Builder products. Examples use character programming Builder, developed by author, presented form algorithms, program code interfaces. paper details development symbols variables. choice method necessary for solving problems substantiated, taking into account available initial data, as well forecast expected results their obtaining further processing. external specification main solution set tasks given algorithms programs with C ++ basis engineering problems. proposed approaches can be used practice, since work will serve a complex example technical

Язык: Английский

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Assessment of the forest seed material quality at the Scots pine (Pinus sylvestris L.) experimental site during adaptive restoration of forest landscapes

Forestry Engineering Journal, Год журнала: 2023, Номер 13(1), С. 112 - 128

Опубликована: Май 16, 2023

When choosing a technology for restoring forest landscapes, the quality of seed material is significant factor. To develop reference information system to support decision-making adaptive restoration it necessary have data on types and material. Existing studies directly or indirectly confirm, one hand, influence future plantations, other characteristics quantity seeds. Preservation in conditions large-scale harvesting Scots pine seeds (Pinus sylvestris L.) possible with development permanent plots, (or) use modern technologies separating without loss genetic diversity increasing not only germination energy, but also vitality seedlings, their stability change abiotic factors. Descriptive statistics biometric parameters trees cones experimental site (N51°50.00'; E39°22.09', 113 m ASL) demonstrates following values (average; average error): height tree (186.2; 11.7), diameter root neck (5.9; 0.3), ratio (31.90; 0.97), number (9; 4), (12; 5). There strong positive correlation at level p < 0.0001 between height, (p 0.001), 0.05) cones. In future, planned evaluate relationship accumulated degree days, precipitation, normalized difference vegetation index number.

Язык: Английский

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Development of a mathematical model for the analysis of the undisturbed state of a thermal power hydraulic system

Modeling of systems and processes, Год журнала: 2023, Номер 16(3), С. 54 - 62

Опубликована: Окт. 18, 2023

The sequence of development a model for analyzing the undisturbed state thermal power hydraulic system - heat supply system, which is an important stage in design and optimization considered. main parameters are analyzed, such as loads, flows, transfer through pipes exchangers, location characteristics equipment (boilers, pumps, etc.). A mathematical has been developed, should take into account all factors affecting efficiency system. presented form equations includes temperature, pressure, coolant flow, etc. Based on this model, it possible to analyze various operating modes optimize make decisions improve it. When developing possibility disturbances was taken account. To unperturbed influence excluded its basic operation flow distribution analysis energy equivalence used. developed will more accurately control reliability.

Язык: Английский

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