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2541
Mental Readiness of Physical Education Students for Odd Semester Lectures in 2023
Published 2023-09-01“…Results. The results of the analysis illustrate that 34 students have very high mental readiness, 62 students have high mental readiness, 12 students have moderate mental readiness, 3 students have low mental readiness, and 1 student has very low mental readiness. …”
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2542
Implementation of creative problem-solving model with RME approach on mathematics problem-solving ability
Published 2024-02-01“…The ice instrument used is a description test with as many as four questions. The t-test results obtained are Sig. 0.001 with a t-count of 2.387. …”
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2543
Research on Spatial Deformation of Flexspline with Variable Thickness Tooth Ring
Published 2021-12-01“…The spatial deformation characteristics of variable thickness tooth ring are studied by comparing with the model of equal thickness tooth ring. The results show that the nonlinear characteristics of the generatrix are aggravated by the variable thickness ring. …”
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2544
Modeling Traffic Function Reliability of Signalized Intersections with Control Delay
Published 2020-01-01“…A numerical simulation has been created to clarify the proposed mechanism of TFR. The results show that the saturation and the green time ratio have a dramatical influence on TFR. …”
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2545
Capacity analysis for MISO-UWOC systems over GGD weak turbulence with zero boresight pointing error
Published 2023-08-01“…Generalized Gamma distribution (GGD) was chosen to describe the weak oceanic turbulence, and a new hybrid fading channel model that integrated the GGD weak turbulence, the zero boresight pointing error, and the implicit path loss plus multipath propagation characterized by the fading free impulse response (FFIR) was proposed.Subsequently, mathematical expressions for the ergodic capacity and outage capacity of the multiple-input single-output underwater wireless optical communication (MISO-UWOC) systems were derived through the Meijer-G function under a selective transmission (ST) diversity scheme especially while inter-symbol interference (ISI) effects were considered or not.Finally, the correctness of the theoretical formulas derived above was verified by some numerical results.The simulation results show that with the introduction of the ST diversity, the ergodic capacity of the MISO-UWOC systems, taking the transmission ports N=2 as an example, is at least 1.3 times better than that of the conventional point-to-point (P2P) transmission under the same channel condition and system parameters, while the maximum outage capacity decreases is also more than 60% compared with the conventional P2P one.However, the introduction of the ISI will severely reduce this performance improvement.…”
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2546
Experimental Investigation and Load Capacity of Slender Cold-Formed Lipped Channel Sections with Holes in Compression
Published 2021-01-01“…However, such holes can result in sections becoming more susceptible to buckle and display lower load-carrying capacities. …”
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2547
STUDY ON STEADY-STATE TEMPERATURE FIELD OF THE MESHING PAIR OF TWO-TOOTH DIFFERENCE SWING-ROD MOVABLE TOOTH DRIVE
Published 2018-01-01“…Based on the basic theory of heat transfer and tribology,the calculation formulas of the friction heat flux density of meshing pair,the meshing tooth surface and the end face convective heat transfer coefficient with two-tooth difference swing-rod movable tooth drive are derived under the slip condition.A finite element model of the thermal analysis of the gear meshing pair is established,and the steady-state temperature field of the meshing pair under thermal balance state is calculated and analyzed by using the ANSYS finite element software.Combined with numerical simulation results,the influence of tooth profile design parameters on the temperature field is revealed.The result shows that:the steady-state temperature field of the meshing pair is determined collectively by the heat flux of the contact zone and the convection heat transfer coefficient of each surface.Because the temperature rise of sliding friction is larger,the maximum temperature appears in the center of the gear meshing face width of the center,the radius of the base circle radius has a great influence on the body temperature of the meshing surface,and the swing rod length is less affected.The research results lay the foundation for the study of the thermal deformation and thermal mechanical coupling characteristics of the meshing pair,so as to guide the dynamic design of the two-tooth difference swing-rod movable tooth drive.…”
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2548
Analysis of the Internal Force and Deformation Characteristics of Double-Layer Lining Structure of Water Conveyance Tunnel
Published 2022-01-01“…By comparing finite element calculation results with analytical calculation results, the rationality of analytical solutions is verified. …”
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2549
Improved Newton Iterative Algorithm for Fractal Art Graphic Design
Published 2020-01-01“…Fractal art graphics are the product of the fusion of mathematics and art, relying on the computing power of a computer to iteratively calculate mathematical formulas and present the results in a graphical rendering. …”
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2550
Analysis of the Effects of Soil on the Seismic Energy Responses of an Equipment-Structure System via Substructure Shaking Table Testing
Published 2019-01-01“…The effectiveness of the proposed testing method was demonstrated by comparing the test results with those of the integrated finite element analysis. …”
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2551
Experimental Research on Dehydration Process and Strength of Concrete Influenced by Drying Temperature and Concrete Size
Published 2022-01-01“…The SEL was modified by introducing drying temperature, and the formulas were obtained after drying.…”
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2552
Finite-Time Synchronization of Fractional-Order Complex-Valued Multi-Layer Network via Adaptive Quantized Control Under Deceptive Attacks
Published 2025-01-01“…Eventually, the reliability of our results and the practicality of control strategies are verified through numerical examples.…”
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2553
THE EFFECTIVENESS OF USING SELF MONITORING APPROACH TO READING AND THINKING (SMART) STRATEGY IN READING COMPREHENSION OF THE SECOND GRADE STUDENTS OF SMP NEGERI 8 LANGSA
Published 2020-08-01“…The result of the experimental group is 80.96 and the control group is 65.54 Self Monitoring Approach Reading to Thinking (SMART) strategy has many advantages in teaching reading comprehension. …”
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2554
Mechanical and Thermal Properties of RCB Masonry Containing Three Rows of Holes
Published 2021-01-01“…The calculation formulas of the compressive and shear strengths of the natural concrete block masonry are applicable to the RCB masonry. …”
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2555
Inversion of Mechanical Parameters of Tunnel Surrounding Rock Based on Improved GWO-BP Neural Network
Published 2025-01-01“…Key enhancements such as cubic chaotic mapping, refraction backward learning, nonlinear convergence factors, and updated position formulas were applied to improve the algorithm’s search efficiency. …”
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2556
Proposing an Improved Version of the Bat Algorithm
Published 2024-12-01“…In this article, the performance of the improved bat algorithm on 11 sample objective functions has been investigated and compared with other similar algorithms, and finally the results show the superiority and accuracy of this algorithm compared to similar samples.…”
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2557
Comparative Study on Calculation Standards for Scuffing Load Capacity of Cylindrical Involute Gears
Published 2022-12-01“…However, the calculation results of these standards for the scuffing loading capacity of gears are different, and difference exists in the application scope of these formulae. …”
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2558
Residual stress determination by blind hole drilling and local displacement mapping in aluminium alloy aerospace components
Published 2024-07-01“…The study presents the pathway to overcoming one of the primary obstacles in residual stress determination, namely, the optimization of the measurement and interpretation procedures to obtain reliable results. It can be concluded from the analysis of the problem that the formulae connecting the raw experimental data and to the sought residual stress component values lead to a well-posed inverse problem. …”
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2559
Aleitamento Materno Exclusivo e Desmame Precoce
Published 2024-12-01“…METHODOLOGY: This is a systematic review study, carried out through a survey of data in the scientific bases: LILACS, SciELO and MEDLINE. RESULTS: Inadequate prenatal care, absence of a support network and family support, use of pacificiers, maternal age, introduction of infant formulas are important factors for weaning before 6 months of life. …”
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2560
内啮合齿轮泵隔离装置的平衡
Published 2021-01-01“…In order to achieve a higher volumetric efficiency of an internal gear pump at higher pressures,a new isolation device with a compensating function in the diameter direction was developed.The device used a technical method of expanding high pressure chamber inside the pump.In order to obtain a better balance for the isolation device,according to the pressure distribution law of the transition zone,the calculation formulas of hydraulic pressure,the compensation force and the supporting force of the crescent block in the transition zone of the crescent block were derived,and then the equilibrium constraints of the device were established.The transition zone was enlarged until only two gear teeth.As an example,the fmincon tool was used to obtain the optimum center angle of the compensation cavity,and the force changes curve was obtained by MATLAB simulation.When an internal gear pump with a theoretical displacement of 50.8 ml/r was carried out under the condition of input pressure of 0.3 MPa,output pressure of 21.8 MPa,at 50℃ ±4℃,and the results show that the volumetric efficiency can reachs 94.3%.No abnormal wear was observed.…”
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