155 research outputs found

    ΠœΠΎΠ΄Π΅Π»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ процСссов Π² ΠΎΠ±ΠΎΡ€ΡƒΠ΄ΠΎΠ²Π°Π½ΠΈΠΈ ΠΏΡ€ΠΈ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠ΅ тонкостСнных Π΄Π΅Ρ‚Π°Π»Π΅ΠΉ

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    Для тонкостСнных Π΄Π΅Ρ‚Π°Π»Π΅ΠΉ Π°ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½Π° Π·Π°Π΄Π°Ρ‡Π° ΠΌΠΈΠ½ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€Π½Ρ‹Ρ… тСхнологичСских Π΄Π΅Ρ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΠΉ. Из-Π·Π° особСнностСй процСсса фрСзСрования тонкостСнныС Π΄Π΅Ρ‚Π°Π»ΠΈ ΠΏΡ€Π΅Π΄ΡΡ‚Π°Π²Π»ΡΡŽΡ‚ ΠΎΡΠΎΠ±ΡƒΡŽ ΡΠ»ΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ Π² мСханичСской ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠ΅. ΠŸΡ€ΠΈ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠ΅ Π½Π΅ΠΈΠ·Π±Π΅ΠΆΠ½ΠΎ Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡŽΡ‚ Π²ΠΈΠ±Ρ€Π°Ρ†ΠΈΠΈ, обусловлСнныС высокими силами рСзания ΠΏΡ€ΠΈ нСдостаточной Тёсткости Π΄Π΅Ρ‚Π°Π»ΠΈ ΠΈΠ»ΠΈ инструмСнта. Π’ слСдствии Ρ‚Π°ΠΊΠΈΡ… Π²ΠΈΠ±Ρ€Π°Ρ†ΠΈΠΉ сниТаСтся Ρ‚ΠΎΡ‡Π½ΠΎΡΡ‚ΡŒ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚Π°Π½Π½ΠΎΠΉ Π΄Π΅Ρ‚Π°Π»ΠΈ ΠΈ качСство повСрхности, вызванная нСдостаточной ΠΆΡ‘ΡΡ‚ΠΊΠΎΡΡ‚ΡŒΡŽ тСхнологичСской систСмы.Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ рассматриваСтся Π°Π»ΡŒΡ‚Π΅Ρ€Π½Π°Ρ‚ΠΈΠ²Π½Ρ‹ΠΉ способ сниТСния тСхнологичСских Π΄Π΅Ρ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΠΉ посрСдством использования матСматичСского модСлирования процСсса фрСзСрования с ΡƒΡ‡Π΅Ρ‚ΠΎΠΌ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ.Due to the characteristics of the milling process, modeling workpiece dynamics during the machining of freeform surfaces is a challenge: The relative movement between the milling tool and the workpiece leads to a variation of the excitation position, and the material removal process results in changing modal parameters of the workpiece. In this work is discussed dealing with modeling techniques for the prediction of workpiece deflections

    БвСрточная нСйронная ΡΠ΅Ρ‚ΡŒ для классификации Π±Π΅Π· использования Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… Π±ΠΈΠ±Π»ΠΈΠΎΡ‚Π΅ΠΊ

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    Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ прСдставляСтся свСрточная нСйронная ΡΠ΅Ρ‚ΡŒ для классификации Ρ†ΠΈΡ„Ρ€ Π½Π° изобраТСниях рСализованная Π±Π΅Π· использования Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… Π±ΠΈΠ±Π»ΠΈΠΎΡ‚Π΅ΠΊ машинного обучСния. Для ΠΎΡ†Π΅Π½ΠΊΠΈ качСства сСгмСнтации ΠΏΡ€ΠΈΠΌΠ΅Π½ΡΡŽΡ‚ΡΡ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Π΅ ΠΌΠ΅Ρ‚Ρ€ΠΈΠΊΠΈ, Ρ‚Π°ΠΊΠΈΠ΅ ΠΊΠ°ΠΊ: ошибка ΠΏΠΎ ΠΌΠΎΠ΄ΡƒΠ»ΡŽ ΠΈ процСнтная Ρ‚ΠΎΡ‡Π½ΠΎΡΡ‚ΡŒ. ΠŸΡ€ΠΎΠ²Π΅Π΄Π΅Π½ΠΎ сравнСниС Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… Ρ‚ΠΎΠΏΠΎΠ»ΠΎΠ³ΠΈΠΉ Π½Π΅ΠΉΡ€ΠΎΠ½Π½ΠΎΠΉ сСти, Π½Π° Π²Ρ‹Π±ΠΎΡ€ΠΊΠ΅ Π΄Π°Π½Π½Ρ‹Ρ…, находящСйся Π² Π±ΠΈΠ±Π»ΠΈΠΎΡ‚Π΅ΠΊΠ΅ машинного обучСния "Scikit-learn" [1]. По ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹ΠΌ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°ΠΌ тСстирования сдСлан Π²Ρ‹Π²ΠΎΠ΄ ΠΎ Π½Π°ΠΈΠ»ΡƒΡ‡ΡˆΠ΅ΠΉ ΠΈΠ· рассматриваСмых Ρ‚ΠΎΠΏΠΎΠ»ΠΎΠ³ΠΈΠΉ Π½Π΅ΠΉΡ€ΠΎΠ½Π½ΠΎΠΉ сСти

    Problems of modern programming used in the technology of transport processes

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    It is well known that information technologies are the most rapidly developing areas of modern life. New technology, designs, names and abbreviations appear almost every day.While creating the products application programming, depending on the industry in which a project is, at the forefront come priority challenges that require extraordinary solutions. This could be accuracy of the solution in the physics-mathematical calculations, the speed of calculations in the programs that implement the reaction or improved interface in products aimed for users, as well as solutions for tasks that implement specific requirements for group work.Mankind has shown interest in the search of the optimal route of application programming and mathematical solution of transportation tasks, allowing to calculate the best route at the lowest cost

    Switching Coal-Fired Thermal Power Plant to Composite Fuel for Recovering Industrial and Municipal Waste: Combustion Characteristics, Emissions, and Economic Effect

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    Combustion characteristics were studied experimentally for single droplets of fuel slurries based on wet coal processing waste with municipal solid waste components (cardboard, plastic, rubber, and wood) and used turbine oil. We established the ignition delay time for three various groups of fuel compositions in motionless air at 600–1000 Β°C. The minimum values are 3 s, and the maximum ones are 25 s. The maximum temperatures in the droplet vicinity reach 1300 Β°C during fuel combustion for compositions with 10% of used oil. The combustion temperatures of fuel compositions without oil are 200–300 Β°C lower. The concentrations of anthropogenic emissions in flue gases do not exceed those from dry coal combustion. Adding used oils to composite fuels reduces the concentrations of dioxins and furans in flue gases when municipal solid waste in the fuel burns out due to high combustion temperatures. Based on the experimental research findings, we have elaborated a strategy of combined industrial and municipal waste recovery by burning it as part of composite fuels, as illustrated by three neighboring regions of the Russian Federation with different industrial structures and levels of social development. This strategy suggests switching three typical coal-fired thermal power plants (one in each of the regions) to composite liquid fuel. It will reduce the hazard of waste to the environment and decrease the consumption of high-quality coals for power generation. Implementing the developed strategy for 25 years will save 145 Mt of coal and recover 190–260 Mt of waste. The positive economic effect, considering the modernization of fuel handling systems at thermal power plants and the construction of a fuel preparation plant, will make up 5.7 to 6.9 billion dollars, or 65–78%, respectively, of the main costs of three thermal power plants operating on coal within the identical period

    ΠŸΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΠ΅ конкурСнтноспособности ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ†ΠΈΠΈ Π½Π° основС эффСктивной систСмы управлСния качСством Π² ΠΎΡ€Π³Π°Π½ΠΈΠ·Π°Ρ†ΠΈΠΈ

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    Π’ процСссС исслСдования ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡŒ Π°Π½Π°Π»ΠΈΠ· ΠΈ ΠΎΡ†Π΅Π½ΠΊΠ° конкурСнтоспособности прСдприятия ΠΈ ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ†ΠΈΠΈ ΠΈ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° мСроприятий ΠΏΠΎ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΡŽ Π΅Ρ‘ конкурСнтоспособности.In the course of the research, the analysis and assessment of the competitiveness of the enterprise and products and the development of measures to increase its competitiveness were carried out

    БистСма Π°Π½Π°Π»ΠΈΠ·Π° гСологичСских ΠΊΠ°Ρ€Ρ‚ с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ инструмСнтов ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€Π½ΠΎΠ³ΠΎ зрСния ΠΈ машинного обучСния

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    НСсколько областСй ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€Π½ΠΎΠ³ΠΎ зрСния Π±Ρ‹Π»ΠΎ исслСдовано Π² Π΄Π°Π½Π½ΠΎΠΉ Ρ€Π°Π±ΠΎΡ‚Π΅ для Ρ‚ΠΎΠ³ΠΎ, Ρ‡Ρ‚ΠΎΠ±Ρ‹ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Ρ‚ΡŒ Π΄Π²Π° модуля систСмы Π°Π½Π°Π»ΠΈΠ·Π° структурных гСологичСских ΠΊΠ°Ρ€Ρ‚ – ΠΌΠΎΠ΄ΡƒΠ»ΡŒ Π°Π½Π°Π»ΠΈΠ·Π° ΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΠΉ ΠΈ ΠΌΠΎΠ΄ΡƒΠ»ΡŒ исправлСния Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² Π°Π½Π°Π»ΠΈΠ·Π°. Ряд Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… соврСмСнных ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² машинного ΠΈ Π³Π»ΡƒΠ±ΠΎΠΊΠΎΠ³ΠΎ обучСния Π±Ρ‹Π» ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ Π½Π° ΠΏΡ€Π°ΠΊΡ‚ΠΈΠΊΠ΅. ВсС ΠΏΠΎΠ΄Ρ…ΠΎΠ΄Ρ‹ Π±Ρ‹Π»ΠΈ ΠΎΡ†Π΅Π½Π΅Π½Ρ‹ Π½Π° синтСтичСской Π²Ρ‹Π±ΠΎΡ€ΠΊΠ΅. На тСстовой Π²Ρ‹Π±ΠΎΡ€ΠΊΠ΅ Π±Ρ‹Π»ΠΈ рассчитаны ΠΌΠ΅Ρ‚Ρ€ΠΈΠΊΠΈ mAP, IOU, F1 score.Several areas of computer vision were researched in order to develop two modules of a structural maps analysis system – image analysis and results correction modules. Multiple modern machine learning and deep learning methods were applied in this master’s thesis, such as. Different approaches were tested in the development process. All of them were validated on synthetic data. Three evaluation metrics (mAP, IOU, F1 score) were calculated during validation

    Π›ΠΈΡ‚ΠΎΠ»ΠΎΠ³ΠΎ-пСтрофизичСская Π·ΠΎΠ½Π°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ ΠΊΠ°Ρ€Π±ΠΎΠ½Π°Ρ‚Π½Ρ‹Ρ… ΠΏΠΎΡ€ΠΎΠ΄-ΠΊΠΎΠ»Π»Π΅ΠΊΡ‚ΠΎΡ€ΠΎΠ² для ΠΌΠΎΠ΄Π΅Π»ΠΈ ΠΎΠΊΠ°ΠΉΠΌΠ»Π΅Π½Π½ΠΎΠ³ΠΎ ΡˆΠ΅Π»ΡŒΡ„Π° Π½Π° ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅ Осинского Π³ΠΎΡ€ΠΈΠ·ΠΎΠ½Ρ‚Π° НСпского свода (Восточная Π‘ΠΈΠ±ΠΈΡ€ΡŒ)

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    ЦСль Ρ€Π°Π±ΠΎΡ‚Ρ‹: ΠŸΠΎΡΡ‚Ρ€ΠΎΠΈΡ‚ΡŒ Ρ‚Ρ€Π΅Ρ…ΠΌΠ΅Ρ€Π½ΠΎΠ΅ ΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΠ΅ пСтрофизичСских ΠΈ литологичСских свойств ΠΊΠ°Ρ€Π±ΠΎΠ½Π°Ρ‚Π½Ρ‹Ρ… ΠΏΠΎΡ€ΠΎΠ΄ Π½Π° ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅ упомянутого Π²Ρ‹ΡˆΠ΅ Осинского Π³ΠΎΡ€ΠΈΠ·ΠΎΠ½Ρ‚Π° ΠΈ ΠΎΡ†Π΅Π½ΠΈΡ‚ΡŒ ΠΈΡ… влияниС Π½Π° Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΡƒ Π½Π° качСствСнном ΡƒΡ€ΠΎΠ²Π½Π΅. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠΌ Ρ€Π°Π±ΠΎΡ‚Ρ‹ стали ΡƒΠΏΡ€ΠΎΡ‰Π΅Π½Π½Ρ‹Π΅ ΠΌΠΎΠ΄Π΅Π»ΠΈ распрСдСлСния пСтрофизичСских свойств ΠΊΠ°Ρ€Π±ΠΎΠ½Π°Ρ‚Π½ΠΎΠ³ΠΎ ΠΊΠΎΠ»Π»Π΅ΠΊΡ‚ΠΎΡ€Π° Осинского Π³ΠΎΡ€ΠΈΠ·ΠΎΠ½Ρ‚Π°, систСматизация ΠΈ ΠΎΠ±ΠΎΠ±Ρ‰Π΅Π½ΠΈΠ΅ ΠΈΠΌΠ΅ΡŽΡ‰ΠΈΡ…ΡΡ Π΄Π°Π½Π½Ρ‹Ρ… ΠΎ строСнии Осинского Π³ΠΎΡ€ΠΈΠ·ΠΎΠ½Ρ‚Π° ΠΈ ΠΎ строСнии ΠΊΠ°Ρ€Π±ΠΎΠ½Π°Ρ‚Π½Ρ‹Ρ… ΠΊΠΎΠ»Π»Π΅ΠΊΡ‚ΠΎΡ€ΠΎΠ² Π² Ρ†Π΅Π»ΠΎΠΌ, ΠΏΠΎΡ‚Π΅Π½Ρ†ΠΈΠ°Π»ΡŒΠ½Π°Ρ ΠΎΡ†Π΅Π½ΠΊΠ° влияния Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… свойств Π½Π° Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΡƒ, Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½ΠΈΠΉ ΠΏΠΎ дослСдованию Осинского Π³ΠΎΡ€ΠΈΠ·ΠΎΠ½Ρ‚Π°.The purpose: to construct three dimensional images of petrophysical and lithological properties of reservoir rocks exemplified by the Osinsky horizon (Eastern Siberia) and to try to estimate the influence of one of this on the development. The results of the work are: simplified models of distribution of petrophysical properties of Osinsky horizon carbonate reservoir, systematization and generalization of available data on the structure of the Osinsky Horizon and on the structure of carbonate reservoirs in general, potential assessment of the impact of various properties on development, development of proposals for additional investigation of the Osinsky horizon

    Kongenitale Herzerkrankungen im Kindes- und Erwachsenenalter

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