This technical report contains the text of Nahmsuk Oh’s thesis “Software Implemented Hardware Fault Tolerance.” FUNDING This work was supported in part by the Ballistic Missile Defense Organization, Innovative Science and Technology (BMDO/IST) Directorate and administered through the Department of the Navy, Office of Naval Research under Grant Nos. N00014-92-J-1782 and N00014-95-1-1047 Copyrigh...

Nonlinear transport properties of a ballistic rectifier fabricated from InAs/AlGaSb heterostructures are reported. The operation of the ballistic rectifier is based on the guidance of carriers by a square anti-dot structure. The structure was defined by electron beam lithography and wet chemical etching. The DC characteristics and magneto-transport properties of the ballistic rectifier have bee...

We present an analytical model for nanoscale MOSFETs capable to describe the transition from drift-diffusion to ballistic transport. We start from a closed-form model of ballistic Fully Depleted SOI (FDSOI) and Double Gate (DG) MOSFETs with non degenerate statistics, and, on the basis of the Büttiker interpretation of dissipative transport in terms of virtual voltage probes, we show that a long...

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...

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...