Category: Engineering
-
Robust, motion-free optical characterization of samples using actively-tunable Twyman–Green interferometry
Focal length characterization of the TFL used for the experiments We characterized the focal length of the TFL as a function of the applied DC current \(I_\mathrm{DC}\) from the Optotune lens driver model 4i. For this purpose, we used a simple setup where a collimated beam was passed through the TFL. The location of the…
-
Deformation characteristics test and mechanism of arbor taproot soil complex in rainforests
Strengthening effect of root system on soil Figure 7 shows the relationship curve between the shear stresses and shear displacements of plain soil and soil complex with three parallel roots under different normal stresses. Herein, the soil complex with three parallel roots was referred to as root soil. Figure 7 Relationship curve between shear stresses…
-
The criterion of development of processes of the self-organization of subsystems of the second level in tribosystems of diesel engine
In the process of studying the possibility of developing processes of self-organization of subsystems of the second level in TS of diesel engine, theories of thermodynamics of non-stationary processes, solid state physics, wear theory and the fundamentals of mechanics were used. To solve the differential equation of the energy-mass transfer, a numerical calculation technique was…
-
Determination of the parameters of rock viscoelastic creep model and analysis of parameter degradation
Creep parameter determination In practical engineering, the physical and mechanical parameters of rock under complex geological conditions obviously changes with stress and time. Parameters, such as the modulus of elasticity, strength, and viscosity, decrease over time. Therefore, the creep parameter is expressed as a functional expression of stress versus time better reflects the essential properties…
-
Three-round learning strategy based on 3D deep convolutional GANs for Alzheimer’s disease staging
Dataset Data used in the preparation of this article were obtained from the ADNI. The ADNI was launched in 2003 as a public–private partnership, led by Principal Investigator Michael W. Weiner, MD. The primary goal of ADNI has been to test whether MRI, positron emission tomography, other biological markers, and clinical and neuropsychological assessment can…
-
Fast Food, Fast Charge – IEEE Spectrum
It sounds so obvious: Public EV chargers should be located in public, where people tend to gather. The reality has often been otherwise, with too many chargers tucked into desolate parking lots or seemingly random locations. And since even the speediest DC chargers take roughly 30 minutes to juice up an EV, drivers and passengers…
-
The ultimate giant of the skies with 242 world records
The Antonov An-225 Mriya is a colossal aircraft that holds the title of being the largest and heaviest plane ever built. It was developed by Antonov a Ukrainian aircraft manufacturing company, and first completed in 1988. The An-225 was specifically designed to transport the Soviet Union’s space shuttle, Buran, and its massive size and capabilities…
-
Model simulates variable flap stiffness in a wing for the best lift
Schematic of the problem set-up and reinforcement learning framework. Credit: Journal of Fluid Mechanics (2023). DOI: 10.1017/jfm.2023.28 There is extensive research on how a fixed-position flap affects lift in the realm of fluid-structure interaction. However, taking the conversation in a new direction, researchers at the University of Illinois Urbana-Champaign conducted a bio-inspired study with a…
-
1 in 6 will be unable to conceive a child, new WHO report estimates
“The sheer proportion of people affected shows the need to widen access to fertility care and ensure this issue is no longer sidelined in health research and policy so that safe, effective, and affordable ways to attain parenthood are available for those who seek it,” Ghebreyesus continued. Middle and low classes most affected due to…
-
The next generation of high-performance electric pickup trucks
In addition, the Ram 1500 REV offers vehicle-to-vehicle, vehicle-to-home, and vehicle-to-grid bi-directional charging that affords the truck the flexibility to charge another Stellantis battery-electric vehicle or provide power back to the grid. The all-new Ram 1500 REV XR with a class-shattering range will follow the introduction of the all-electric Ram 1500 REV. The 2025 Ram…