The proceedings contain 53 papers. The topics discussed include: computersimulation use in design gating system of cast made from the cast iron;cyber security in the healthcare sector - current threats;digital transf...
ISBN:
(纸本)9786197603484
The proceedings contain 53 papers. The topics discussed include: computersimulation use in design gating system of cast made from the cast iron;cyber security in the healthcare sector - current threats;digital transformation of agriculture: priorities and barriers;impact of COVID-19 on the digitalization of the enterprises in the bioeconomy sector;implementation of intelligent biometric system for face detection and classification;measuring and evaluation of the echogenicity grade of substantia nigra in MRI sequences vs b-mode ultrasound imaging using the same algorithm: pilot comparison study;numerical study on fire hazard associated to external thermal insulation cladding systems;securing information systems using fractal geometry;potential security attacks via the illegal distribution of single board computers;use of artificial intelligence elements in predictive process management;modelling barley biomass from phenocam time series with multi-output gaussian processes;smoke and fog classification in forest monitoring using high spatial resolution images;and generating actionable intelligence from geospatial big data: state of the art and concept.
With the rapid development of the electric power industry, the capacity of hydroelectric power generation group is increasing. The digital simulation of the electric power system has become the main tool for the desig...
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ISBN:
(数字)9798350360240
ISBN:
(纸本)9798350384161
With the rapid development of the electric power industry, the capacity of hydroelectric power generation group is increasing. The digital simulation of the electric power system has become the main tool for the design, planning, operation and research of the electric power system. The corresponding decisions are based on the results of digital simulation. In this paper, the hydropower generation group of Yangfanggou large hydropower station (installed capacity of 1500MW) is taken as the model. Firstly, the development of current digital simulation tools is introduced. In combination with M-file programming of Matlab language and SIMULINK platform simulation, the implicit ladder method and Newton-Raphson method under numerical calculation method are introduced in detail. It is replaced by algebraic equation and linear equation respectively to be calculated. Finally, the transient process of sudden short circuit of large generator is selected for simulation analysis, which provides data support for safe and stable operation and fault analysis of equipment.
As an ancient musical instrument, piano plays an indispensable role in people's daily life. With the development of science and technology and the improvement of living standards, people's aesthetic demand for...
As an ancient musical instrument, piano plays an indispensable role in people's daily life. With the development of science and technology and the improvement of living standards, people's aesthetic demand for it also increases. And virtual reality technology can provide users with a new three-dimensional and realistic visual and auditory experience. This paper will introduce a new digital music playing method based on the combination of BP neural network andcomputer virtual reality system, and how to use MATLAB software to realize piano simulation in the future work. The test results show that, The piano performance system based on BP neural network algorithm andcomputer virtual reality technology can process more than 80% of the piano score data efficiently, and the maximum number of piano pieces stored can reach 6574k. Based on the above test results, it can be seen that the system can meet user requirements.
Aiming at overcoming the difficulties of actual test and demonstration in commercial space launch missions and the lack of visualized analysis tools, this paper studies the digital modeling technology for commercial s...
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ISBN:
(数字)9798350380958
ISBN:
(纸本)9798350380965
Aiming at overcoming the difficulties of actual test and demonstration in commercial space launch missions and the lack of visualized analysis tools, this paper studies the digital modeling technology for commercial space launch, and proposes solutions to problems such as multi-module parallel assembly testing with short intervals, spatiotemporal coordination for comprehensive process and technical interface matching etc. Models for the analysis and calculation of explosion range, noise impact, and geological environment are created, which has achieved quick customization and flexible assembly of simulation and modeling for complex process, as well as a data evaluation model for digitalized collaboration under multiple problem domain situations, optimizing the process of space launch activities in commercial field.
In order to realize the visualization simulation of bullet trajectory of submunition, this paper applies the MonteCarlo method to establish the bullet trajectory model, and uses the Visual c# development environment a...
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In recent years, the development process of Beijing Tianjin Hebei integration has been gradually accelerated, which has also promoted the industrial transformation of Tangshan, Hebei Province to a large extent, accele...
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In recent years, the development process of Beijing Tianjin Hebei integration has been gradually accelerated, which has also promoted the industrial transformation of Tangshan, Hebei Province to a large extent, accelerated the pace of transformation, and further strengthened the position of transportation hub. This paper based on the research and practice of new energy digital trackless train, mainly studies the computer modeling and design of new energy digital trackless train. By establishing a computer model, we can realize the indoor and outdoor full simulation of new energy digital trackless train, in order to facilitate and quickly promote the actual results of the future new energy digital trackless train project in Jing-Jin-Ji.
In several mechanically linked sectors, including power plants and the aerospace industry, explosive welding (EXW) has been utilised successfully. Furthermore, it has been effectively used in the production of biocomp...
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ISBN:
(纸本)9789811941467
In several mechanically linked sectors, including power plants and the aerospace industry, explosive welding (EXW) has been utilised successfully. Furthermore, it has been effectively used in the production of biocompatible materials in medical and associated areas, among other things. This technique is beneficial for joining various types of metals and alloys that are difficult to join using other methods of welding, such as stick welding. The majority of earlier experimental research on titanium and aluminium layered composites concentrated on the microstructural and mechanical properties of the materials. However, the exact mechanism through which titanium and aluminium are formed during explosive welding is still a mystery. Only a few simulations have been piloted to study the explosive welding process of titanium and aluminium layers. Even so, there is potential for investigating the EXW of titanium in conjunction with an aerospace-grade aluminium alloy. This article describes the development of a more physically accurate 2D numerical model for simulating the whole process of explosive welding titanium and the aluminium alloy Al7075-T6. The smoothed particle hydrodynamics (SPH) approach was utilised in this simulation, which is included in the ANSYS Autodyn software package. The numerical model is capable of modelling the standard physics of explosive welding, including explosive expansion, flyer plate bending, metal plate collisions, jetting and plate contact throughout the operation. Physical properties that change throughout the explosive welding process are discussed in detail. The aluminium plate served as the foundation for the majority of the jet's components. As predicted by the model, the jet travelled at a speed of 1100 m/s. Furthermore, the pressure at the explosion site was insufficient for causing the two plates to bind together successfully. Due to the fact that the detonation energy is steady and much larger than the yield strength of both plates
Data interfaces are widely used and the transmission rate is increasing, which puts higher requirements on the interface Electro Static Discharge (ESD) protection capability. A bi-directional SCR structure with Ultra-...
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ISBN:
(数字)9798350380958
ISBN:
(纸本)9798350380965
Data interfaces are widely used and the transmission rate is increasing, which puts higher requirements on the interface Electro Static Discharge (ESD) protection capability. A bi-directional SCR structure with Ultra-Low-Capacitance and Low Trigger Voltage DDSCR (ULCTDDSCR) is designed for this purpose. The structure is based on the DDSCR structure design, which reduces the capacitance of the device by increasing the spacing between the P-type injection wells and the N-type injection wells, and a high-concentration reverse diode is embedded at the edge of the injection wells to reduce the trigger voltage of the device.
The valve positioner control system has the characteristics of nonlinear, time-varying, large inertia and pure hysteresis, etc. Aiming at the problems of the conventional PID control algorithm in its control process, ...
The valve positioner control system has the characteristics of nonlinear, time-varying, large inertia and pure hysteresis, etc. Aiming at the problems of the conventional PID control algorithm in its control process, such as not high control precision, slow response and poor robustness, a Smith double fuzzy PID compound control method is proposed. The working principle of the intelligent valve positioner is analyzed, and the control precision of the system is improved by combining the dual fuzzy controller and PID controller. The effect of time delay on system performance is improved by designing Smith predictor. The simulation results show that the control method can effectively reduce the overshoot in the control process, improve the system response speed, reduce the steady-state error, and has better robustness. Smith double-fuzzy PID composite control method has advantages and advanced in improving the control accuracy of the valve positioner system.
This paper establishes and introduces a measurement model based on Environmental Engineering EED theory and system engineering metaphor, with a view to conducting an optimization design of the classical structural equ...
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ISBN:
(纸本)9781665427098
This paper establishes and introduces a measurement model based on Environmental Engineering EED theory and system engineering metaphor, with a view to conducting an optimization design of the classical structural equation model, aiming to model, simulate and optimize a system engineering response countermeasure system that the research organization is responding to changes in the surrounding society and natural environment. Both of the fsQCA qualitative analysis and Corpus quantitative analysis are combined to improve the verification factor and structural equation in terms of the validity and reliability of the model. This paper concludes that both of optimization andsimulationprocess of structural equation model based on system metaphor improve the original counterpart, in terms of applying the concordance of Corpus for keyword search, extracting factor loads with concordance frequency, saving steps and reducing the process loss of data information. The improved model is more concise, and the information milling value of the data is more efficient and sufficient;the dynamic diachronic simulationprocess with the help of the Plot tool of Corpus makes the model more dynamic and diachronic than the original model, which conforms to the EED theoretical evolutionary paradigm.
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