This paper presents a technique to derive and implement error detectors to protect an application from data errors. The error detectors are derived automatically using compiler-based static analysis from the backward program slice of critical variables in the program. Critical variables are defined as those that are highly sensitive to errors, and deriving error detectors for these variables pr...

We present two robust detectors for nonstationary random signals that belong to p-point uncertainty classes, one being based on an estimator-correlator approach, the other using the deflection criterion. Apart of stable performance, these robust detectors have the advantage of requiring only reduced prior knowledge. Using local cosine bases, we provide an intuitive and highly efficient timefreq...

This paper summarizes a system, called SED ‘‘Selection of Edge Detectors’’, which is able to automatically select edge detectors and their scales to extract a given edge. The basic organization of the SED system is a collection of edge detectors within a knowledge structure made up of the characteristics of the given edge, the properties of the detectors and the mutual relation between them. Co...

Pixel Detectors, as the current technology of choice for the innermost vertex detection, have reached a stage at which large detectors have been built for the LHC experiments and a new era of developments, both for hybrid and for monolithic or semi-monolithic pixel detectors is in full swing. This is largely driven by the requirements of the upgrade programme for the superLHC and by other colli...

Infrared radiations are radiations below (infra) visible spectrum. This emergent dual use technology field is fast emerging amongst the most ubiquitous ones. It spans from low-end automatic supermarket door openers to high-end space based detectors used to detect nuclear tests, missiles and intra galactic radiations. At the heart of this technology is the IR detector. Objective of this report i...

The high efficiency of the BGO detectors makes them very attractive candidates to replace NaI(T1) detectors, which are widely used in studies of body composition. In this work, the response functions of the BGO and NaI(T1) detectors were determined at 0.662,4.4, and 10.0 MeV using three different Monte Carlo codes: EGS4,l MCNP,2 and PHOTON.3 These codes differ in their input files and transport...

Cadmium Zinc Telluride (CZT) detectors are having a major impact on the field of hard X-ray astronomy. Without the need for cryogenic cooling they achieve good spatial and energy resolutions over the broad energy range from 10 keV to ∼600 keV. In this paper, we briefly review the historical development of detectors used in Xray astronomy. Subsequently, we present an evaluation of CZT detectors ...

In this paper, we investigate the performance of segment-based detectors for three taxonomic sets of acoustic-phonetic classes. Acoustic-phonetic detectors form an important processing layer for speech event decoding in the new detection-based automatic speech recognition. In this study, detectors are trained within a minimum verification error (MVE) framework which is markedly different from t...

The goal of this paper is to provide a study on complementarity of feature point detectors. Many studies have been proposed on these detectors but none deals with complementarity in details. We introduce an evaluation of eleven well-known detectors based on new criteria used to characterize complementarity. The complementarity is computed with spatial distribution and contribution measures as w...