Modeling of imperfect repair through perfect renewal process uses an ‘‘as good as new’’ repair assumption and nonhomogeneous Poisson process uses an ‘‘ABAO’’ repair assumption. In practice, repair actions do not result in such extreme situations but in a complex transitional one, that is, general repair. This article discusses generalized renewal process for an aero engine as repairable compone...

Impairments in cell migration processes may cause various diseases, among which cancer cell metastasis, tumor angiogenesis, and the disability of immune cells to infiltrate into tumors are prominent ones. Mathematical modeling has been widely used to analyze the cell migration process. Cell migration is a complicated process and requires statistical methods such as random walk for proper analys...

we created a simple cellular automata (ca) model for hepatitis b infection dynamics associated with spatial structure performed under various ages of liver tissue correspond to different immune responses in order to study the effect of spatial heterogeneities on the dynamical evolution of a viral infection. the results of the simulations show biphasic nature of viral load decreases, as observed...

if we think of the graph as modeling a network, the vulnerability measure the resistance of the network to disruption of operation after the failure of certain stations or communication links. many graph theoretical parameters have been used to describe the vulnerability of communication networks, including connectivity, integrity, toughness, binding number and tenacity.in this paper we discuss...

Surveillance system is widely used today to enhance the security level of the protected area. Reliability of the entire surveillance system is a critical issue since the breakdown of such system would leave the monitoring area unobserved and encountered much higher risk under the attacks. This paper presents a dual stochastic-process model for predicting the reliability of surveillance systems ...

In this paper we study the impact of variability on the pulse latch. Pulse (or pulsed) latch is crucial element of the current SoC designs for both delay and power consumption. The threshold voltage (Vt) fluctuations due to Random Dopant Fluctuation (RDF) and Process, Voltage, and Temperature (PVT) effects on probability of failure are discussed. We propose a modeling methodology which is not t...

Integrated Intelligent Equipment Health Management System (IIEHMS) is a systematic engineering design Framework that includes multi-functional disciplines (such as mechanical, electrical, optical and software engineering, quality assurance, and manufacturing) with their partners and suppliers works together to achieve a green topology plant with respect to life cycle cost. The proposed structur...