This paper presents the profit analysis of a system of two non-identical units in which one unit is original which is initially operative and the other is duplicate kept in cold standby. The units may fail completely directly from normal mode. There is a single server who visits the system immediately when required. The original unit undergoes for repair upon failure while only replacement of t...

Manufacturing and repair tasks using additive subtractive laser processing (e.g., paint stripping drilling) are becoming widely used in ships, aircrafts, bridge structures. As with fire exhaust impingement, such low level heat fluxes (<10 W) could negatively impact mechanical properties of composite In this work, thermal excursions were simulated via continuous-wave exposure the center region a...

This paper derives upper and lower bounds on the secrecy capacity-memory tradeoff of a wiretap erasure broadcast channel (BC) with Kw weak receivers and Ks strong receivers, where weak receivers, respectively strong receivers, have same erasure probabilities and cache sizes. The lower bounds are achieved by schemes that meticulously combine joint cache-channel coding with wiretap coding and key...

One distinct advantage of Redundant Array of Independent Disks (RAID) is fault tolerance. But the performance of a disk array in degraded mode is so poor that no one uses the RAID after failure. Continuous operation of RAID in degraded mode is very important in many real time applications, which can not be interrupted in providing continuous services. In this paper, we propose an efficient arch...

There are a variety of degradation models in the literature, each with certain effect random variation around mean path on time-to-failure device being degraded. To assess dependence that exerts resulting time-to-failure, this paper presents copula functions for time-to-failure-based respect to two well-known models, namely, multiplicative model and additive model. The implied case have explici...

Character segmentation is an important preprocessing step for text recognition. In degraded documents, existence of touching characters decreases recognition rate drastically, for any optical character recognition (OCR) system. In this paper a study of touching Gurmukhi characters is carried out and these characters have been divided into various categories after a careful analysis. Structural ...

The main concentration in the present paper is to analyze a singleunit system using the concepts of inspection, degradation, preventive maintenance, and server failure. A single repair facility inspect the original and degraded unit upon failure to check the feasibility of repair. The repair facility may fail during maintenance, repair and inspection and undergoes for treatment with Weibull pro...

Sodium dodecyl sulfate-polyacrylamide gel electrophoresis followed by immunoblot analysis of plasma thrombomodulin concentrate revealed that four degraded forms of thrombomodulin with different molecular weights are present in plasma. Plasma concentrations of thrombomodulin in patients with various diseases were measured by two methods of enzyme-linked immunosorbent assay using monoclonal antib...

Distributed database applications are a wide use of distributed systems. One of the major advantages of distributed database systems is the potential for achieving high availability in the presence of faults. Faults must be handled so that the system still operates or operates in a degraded mode. This paper focuses on being able to detect component errors which can lead to system failures in th...

Conventional dependability measures, such as reliability or availability, assume that the equipment characterized by the measure is either operational or has failed. This dichotomy does not hold for decentralized or distributed systems because these can operate in modes in which partial or degraded service is furnished. Whether a specific degraded mode should be counted as "operational" or "fai...