The material properties of OFHC copper film was investigated with the High-Speed Material Micro Testing Machine (HSMMTM) at the high strain rates. The rate-dependent stress-strain curves from the experiment and the Johnson−Cook curve fitting showed large discrepancies as the plastic strain increases since the constitutive model implies no rate-dependent strain hardening effect. A new constituti...

Abstract: Methods of fault-hardening software implementations of the numerical Model Predictive Control (MPC) algorithms are discussed in the paper. In particular, Generalized Predictive Control (GPC) algorithms are considered. The robustness of these algorithms with respect to faults is crucial for process safety and economic efficiency, as faults may result in major control performance degrad...

This paper proposes and investigates schemes for hardening the conventional CMOS cross-coupled DRAM sense amplifier to single event upset (SEU). These schemes, adapted from existing SRAM hardening techniques, are intended to harden the dynamic random access memory to bitline-mode errors during the sensing period. Simulation results indicate that a 9kΩ L-resistor hardening scheme provides greate...

An Aspect-Oriented Framework for Systematic Security Hardening of Software Azzam Mourad, Ph.D. Concordia University, 2008 In this thesis, we address the problems related to the security hardening of open source software. Accordingly, we first propose an aspect-oriented and pattern-based approach for systematic security hardening. It is based on the full separation between the roles and duties o...

P92 steel was irradiated with Ar ion up to 10 dpa at 200, 400, and 700 ◦C. The effect of Ar ion irradiation on hardness was investigated with nanoindentation tests and microstructure analyses. It was observed that irradiation-induced hardening occurred in the steel after Ar ion irradiation at all three temperatures to 10 dpa. The steel exhibited significant hardening at 200 and 700 ◦C, and slig...

Case hardening is a feature of dried wood that causes the wood to deform (cup) after re-sawing and equalising the moisture content. VTT has analysed case hardening with the aid of the simulation model PEO and with experimental drying, conditioning and storage tests. Case hardening cannot be predicted by the moisture content gradient alone. However, the case hardening gap after drying to a high ...

Practical software hardening schemes are heuristic and are not proven to be secure. One technique to enhance security is robust combiners. An algorithm C is a robust combiner for speci cation S, e.g., privacy, if for any two implementations X and Y , of a cryptographic scheme, the combined scheme C(X, Y ) satis es S provided either X or Y satisfy S. We present the rst robust combiner for softwa...

The beam hardening effect is one of the major artifacts of X-ray computed tomography. It not only complicates medical inspection and material analysis, but also influences the accuracy and repeatability of dimensional measurements. Therefore, many efforts have been devoted to develop beam hardening correction methods since the early 1970s. In practice, the combination of hardware filters (pre-f...

Using molecular dynamics simulations of a generic model, we observe strain hardening in highly cross-linked polymer glasses under tensile deformation. We show that formation of microvoids, without bond breaking, constitutes the microscopic origins of strain hardening. A well-defined functional form is observed for the void size distribution that is consistent with voids in dense equilibrium Len...

In this work we introduce a cost-aware methodology for selective hardening of combinational logic cells, which provides a list of the most effective candidates for hardening. Two heuristics are proposed in order to define when selective hardening becomes unfeasible. The methodology and the heuristics are applied to a set of benchmark circuits using costs extracted from an actual standard cell l...