In the cortex, the timing of successive action potentials is highly irregular. The interpretation of this irregularity has led to two divergent views of cortical organization. On the one hand, the irregularity might arise from stochastic forces. If so, the irregular interspike interval reflects a random process and implies that an instantaneous estimate of the spike rate can be obtained by aver...

Despite many diverse theories that address closely related themes-e. g., probability theory, algorithmic complexity, cryptoanalysis, and pseudorandom number generation-a near-void remains in constructive methods certified to yield the desired "random" output. Herein, we provide explicit techniques to produce broad sets of both highly irregular finite and normal infinite sequences, based on cons...

Linear induction motor (LIM) subway yard line often have very-small-radius curves and small turnouts with “S”-shaped in the middle. The lateral stability of train is low, wheel-climb (slipway) derailments occur at a speed 10 km/h. To study derailment safety limit linear running through line, coupling dynamic model train-track system established, fully considering driving characteristics motor, ...

• A systematic study with new insights into wheel-rail flange squeal is carried out. Well-controlled in-situ experiments are conducted for measurements. An integrated transient model proposed and validated analysis. The intakes 3D scanning irregularity data reappearance. Mechanism of studied by discussion on identified critical factors. Wheel-rail noise during train turning has been a tricky pr...

Recent in situ observations during Critical Ionization Velocity (CIV) experiments under the CRIT project produced puzzling results, apparently at odds with current ClV theories. It is shown that incorporation in the theory of lower hybrid wave (LHW) instabilities of strong turbulence and finite size effects results in reconciliation of the theory with the observations.

Memory is an important part of any electronic device. In today's world static random access memory (SRAM) is widely used as memory. The major issues for design of SRAM are power loss, delay and stability. This paper presents a modified form of a symmetric eight-transistor SRAM bit-cell. In this paper transmission gate has been used as access transistor which provides rail-to-rail swing. Moreove...

Cortical neurons in vivo had been regarded as Poisson spike generators that convey no information other than the rate of random firing. Recently, using a metric for analyzing local variation of interspike intervals, researchers have found that individual neurons express specific patterns in generating spikes, which may symbolically be termed regular, random, or bursty, rather invariantly in tim...

The study deals with determination of the vertical load on carrying structure a flat wagon 18–100 and Y25 bogies using mathematic modelling. was made for an empty passing over joint irregularity. authors calculated designed parameters actual features recorded during field tests. mathematical model solved in MathCad software. found that application bogie can decrease dynamic by 41.1% comparison ...

Subjects observed a random dot pattern that moved horizontally with modulated velocity within an invisible aperture. The velocity contrast, (V2-V1)/V1, was 2/3. Two different percepts occurred while observing this stimulus. At lower modulation frequencies, between 2 and 12 Hz, velocity changes were clearly seen; this percept is called "motion irregularity". At frequencies higher than 20 Hz velo...

Abstract For studying the influencing factors of wheel set wear on high-speed trains, a large number simulation analyses have found that line conditions, speed, tread profile, adhesion coefficient, contact geometry, and other varying degrees impact wear. However, based difficulty dynamic measurement, it cannot be directly verified. By establishing rigid-flexible model for correlation between pa...