This article presents the design and characterization of a dual-band, compact, dual-circularly polarized (CP) traveling wave series-fed circular slit microstrip array (TWSCSMA) antenna operating in quad-band CP at 2.5/3.5/3.8 GHz WiMAX 5.2 WLAN applications. The radiating structure consists an annular ring elements, rotates sequence with seven quasi-lumped resonators contributes to two-impedanc...

Accesses to the shared memory in multi-processor systems-on-chip represent a significant performance bottleneck. Multi-port memories are a common solution to this problem, because they allow to parallelize accesses. However, they are not an energy-efficient solution. We propose an energy-efficient shared-memory architecture that can be used as a substitute for multi-port memories, which is base...

In recent work a class of quasi port Hamiltonian system expressing the first and second principle of thermodynamics as a structural property has been defined: Irreversible port-Hamiltonian system. These systems are very much like port-Hamiltonian systems but differ in that their structure matrices are modulated by a non-linear function that precisely expresses the irreversibility of the system....

Public traffic traces are often obfuscated for privacy reasons, leaving network historians with only port numbers from which to identify past application traffic trends. However, it is misleading to make assumptions simply based on default port numbers for many applications. Traffic classification based on machine learning could provide a solution. By training a classifier using representative ...

This paper is devoted to trajectory tracking control for port-Hamiltonian systems. The control law presented here is extension of an existing passive velocity field controller for fully actuated mechanical systems. The proposed method employs vector fields on the phase (co-tangent) spaces instead of those on the velocity (tangent) spaces. Since port-Hamiltonian systems can describe a wider clas...

Earth pressure balance tunnel boring machines (EPB-TBMs) are favorably applied in urban tunneling projects. Despite their numerous advantages, considerable delays and high maintenance cost are the main disadvantages these machines suffer from. Reliability, availability, and maintainability (RAM) analysis is a practical technique that uses failure and repair dataset obtained over a reasonable ti...

This paper offers a geometric framework for modeling port-Hamiltonian systems on discrete manifolds. The simplicial Dirac structure, capturing the topological laws of the system, is defined in terms of primal and dual cochains related by the coboundary operators. This finitedimensional Dirac structure, as discrete analogue of the canonical Stokes-Dirac structure, allows for the formulation of f...

The microstructure of dual phase steels can be considered as a matrix of ferrite phase reinforced by martensite particles. Recent measurements show that the mechanical properties of the ferrite phase are changed with the distance from the martensite grains. In this paper, a new method has been proposed to consider this phenomenon in finite element modeling of dual phase steels microstructure. I...