To deal with train delays in large high-speed railway stations, a multi-objective mixed-integer nonlinear Musical programming (MO-MINLP) optimization model was proposed.The model used the arrival time, departure time, track occupation, and route selection as the decision variables, and fully considered the station infrastructure layout, train opera
Dry Machining Aeronautical Aluminum Alloy AA2024-T351: Analysis of Cutting Forces, Chip Segmentation and Built-Up Edge Formation
In this paper, machining aeronautical aluminum alloy AA2024-T351 in dry conditions was investigated.Cutting forces, chip segmentation, and built-up edge formation were analyzed.Machining tests revealed that the chip formation process depends on cutting conditions and tool geometry.So continuous and segmented chips are generated.Under some cutting c
Defining the genetic components of callus formation: A GWAS approach.
A characteristic feature of plant cells is the ability to form callus from parenchyma cells in response to biotic and abiotic stimuli.Tissue culture propagation of recalcitrant plant species and genetic engineering for desired phenotypes typically depends on efficient in vitro callus generation.Callus formation is under genetic regulation, and cons
Research efficiency use of orthogonal double polarization MIMO antennas in drone communication
The article considers possible variants of application of various MIMO schemes for the communication with the drone or unmanned aerial vehicle.The model of multipath propagation of radio waves taking into account polarization beanie set parameters of antennas is given.The main focus is on the use of MIMO technology with polarization-orthogonal chan
Selective breeding for a behavioral trait changes digit ratio.
The ratio of the length of the second digit (index finger) divided by the fourth digit (ring finger) tends to be lower in men than in women.This 2D:4D digit ratio is often used as a proxy for prenatal androgen exposure in studies of human health and behavior.For example, Footballs 2D:4D ratio is lower (i.e.more "masculinized") in both men and women