Sökning: "faults"

Visar resultat 1 - 5 av 392 avhandlingar innehållade ordet faults.

1. 1. Models for Estimation of Software Faults and Failures in Inspection and Test

   Författare :Per Runeson; Institutioner vid LTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; failures; usage based testing; usage model; statistical testing; faults; capture-recapture; inspections; software quality; software reliability; experiments; Computer science; numerical analysis; systems; control; Datalogi; numerisk analys; system; kontroll;

   Sammanfattning : In software engineering, the quality of software and in particular the software reliability has to be controlled and improved. Hence there is a need for measuring and controlling the number and appearance of software faults and failures. LÄS MER

3. 2. On the Design and Validation of Fault Containment Regions in Distributed Communication Systems

   Författare :Håkan Sivencrona; RISE; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fault handling and membership agreement; Byzantine faults; asymmetric faults; fault injection; time-triggered protocol; fault containment regions; slightly-out-of-specification faults; validation;

   Sammanfattning : This thesis has a two fold focus where the first is an evaluation of a time-triggered communication protocol implementation, TTP-C1, which was stressed by use of heavy-ion fault injection. The gathered result showed a novel type of failures, earlier known only from theory, so-called slightly-out-of-specification faults, that manifested as Byzantine failures with resulting system inconsistence. LÄS MER

4. 3. Reconfigurable NoC and Processors Tolerant to Permanent Faults

   Författare :Alirad Malek; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Networks-on-Chip; Fault Tolerance; Permanent Faults; Reconfigurable Hardware; Adaptive processors;

   Sammanfattning : Advances in semiconductor industry have led to reduced transistor dimensions andincreased device density, but inevitably they have compromised the reliability of moderncomputing systems. In this thesis, we address the reliability problemby exploitinghardware reconfiguration for tolerating permanent faults. LÄS MER

5. 4. Stacking Faults in Silicon Carbide

   Författare :Hisaomi Iwata; Friedhelm Bechstedt; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : This PhD thesis comprises a series of theoretical studies on various stacking faults in silicon carbide polytypes, based on first-principles density functional modelling, which lead to a detailed insight into general electronic properties of stacking disordered system. This work is largely motivated by the discovery in 1999 by ABB Corporate Research of the electronic degradation phenomenon in 4H-SiC p-i-n diodes. LÄS MER

7. 5. On Concurrent Error Detection and Error Propagation

   Författare :Joakim Ohlsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; error models; control flow monitoring; simulation experiments; concurrent error detection; permanent faults; watchdog processors; fault injection; transient faults;

   Sammanfattning : This thesis addresses three important steps in the selection of error detection mechanisms for microprocessors: (i) the design and evaluation of error detection mechanisms, (ii) the study of microprocessor error behavior and propagation and (iii) the design and use of error models. The first part of the thesis evaluates four error detection methods with respect to para- meters such as error detection coverage and performance loss, while the second and third parts focus on determining the error patterns most likely to occur in a computer system when different types of faults are present and how to incorporate those error patterns into error models. LÄS MER