Abstract In order to study the penetration ability of fragment simulation projectile(FSP) armored steel target, and detect protection target plates with different thicknesses. Combined numerical experiment, process FSP on thickness ratios is studied. The design implementation preparations were made for damage plate by fragments, relevant data obtained analyzed. analysis results show that finite...

In this paper, we examine the crossover between 4 ballistic and diffusive transport in III–V nanowire transistors. 5 We find that at lower drain voltages the ballistic-to-diffusive 6 crossover occurs at channel lengths of approximately 2.3 nm at 7 room temperature. However, when we increase the drain voltage, 8 we find that the ballistic-to-diffusive crossover can be more than 9 nine times as l...

The diffusive-ballistic heat conduction of finite-length single-walled carbon nanotubes has been studied by means of nonequilibrium molecular dynamics simulations. The length dependence of thermal conductivity [1] is quantified for a range of nanotube lengths up to 1.6 μm at room temperature. A gradual transition from nearly pure ballistic to diffusive-ballistic heat conduction was identified f...

In this paper, we present the main issues and the modelling approaches for the simulation of nanoscale MOSFETs in which transport is dominated by ballistic electrons. We show that is indeed possible to compute in an accurate way the density of states in the channel in the case of quantum confinement without solving the complete two-dimensional Schr€ odinger equation. We are developing modelling...

It has been shown that certain types of random walks in random potentials and Brownian motion in Poissonian potentials undergo a phase transition from sub-ballistic to ballistic behavior when the strength of the underlying drift is increased. The ballistic behavior has been manifested by indicating a limiting area for the normalized motion. In the present article, we provide a refined descripti...

P O L Y M E R S Our goal is to prevent the catastrophic failure of ballistic body armor by developing measurements and predictive models to test and determine the long-term reliability of polymers used in ballistic resistant armor. Our approach, which utilizes conventional analytical techniques in addition to newly developed minimally invasive test methods, seeks to identify the chemical and me...

Uncertainties in certain features of target geometries result in a loss of confidence in the signature assessment of the target. Knowledge of the impact to a target’s radar cross section (RCS) due to changes to specific target features can assist to identify whether uncertainty in a certain target feature warrants a loss of confidence in the target signature. This study will allow a development...

The finding that Russia is in violation of its obligations under the Intermediate-Range Nuclear Forces Treaty has raised doubts about its durability. If the treaty cannot be revived, the United States could choose to add conventional land-based theater ballistic missiles to its arsenal. The U.S. Army should start a rigorous assessment of the potential military value and potential strategic risk...

An optimal algorithm to do probe selection in causal chains is presented. Probes may have different costs of measurement. The algorithm runs in polynomial time. This research was supported in part by the Ballistic Missile Defense Advanced Technology Center under contract #DASG60-86-C-0015, the Office of Naval Research, under Agreement #N00014-85-K-0008 and the Defense Advanced Research Projects...

The purpose of this study was to investigate the influence of a single static, ballistic, or proprioceptive neuromuscular facilitation (PNF) stretching exercise on the various muscle-tendon parameters of the lower leg and to detect possible differences in the effects between the methods. Volunteers (n = 122) were randomly divided into static, ballistic, and PNF stretching groups and a control g...