Application performance on modern microprocessors depends heavily on performance related characteristics of the underlying architecture. To achieve the best performance, an application must be tuned to both the target-processor family and, in many cases, to the specific model, as memory-hierarchy parameters vary in important ways between models. Manual tuning is too inefficient to be practical;...

We propose an improved method to retrieve the effective constitutive parameters (permittivity and permeability) of a slab of metamaterial from the measurement of S parameters. Improvements over existing methods include the determination of the first boundary and the thickness of the effective slab, the selection of the correct sign of effective impedance, and a mathematical method to choose the...

In this research, a theory has been developed to estimate the effective parameters of artificial material composed of dielectric bars placed in a periodic fashion in dielectric host medium (air) from equivalent circuit point of view and verified with HFSS simulation. The theory provides a relationship between effective permittivity and the filling factor of the constituent particle and explains...

There is currently a great interest in studying the electromagnetic response of helix loaded composites. There have been many works in the literature that model such materials as artificial chiral media. The objective is to understand the dependence of the electromagnetic response of the artificial medium on the inclusion and the host medium parameters. Therefore, a theoretical model is needed ...

It is essential to alter effective electromagnetic parameters of a material to enhance its response. In the present work, we propose a novel Left Hand Metamaterial (LHM) structure comprising double turn spiral resonator (DTSR) and capacitance loaded strips (CLS). This structure is numerically explored to examine the resonance and effective material parameters i.e. permeability and permittivity....

Reflection and refraction of electromagnetic waves by artificial periodic composites (metamaterials) can be accurately modeled by an effective medium theory only if the boundary of the medium is explicitly taken into account and the two effective parameters of the medium (the index of refraction and the impedance) are correctly determined. Theories that consider infinite periodic composites do ...

RNA genetic circuitry is emerging as a powerful tool to control gene expression. However, little work has been done to create a theoretical foundation for RNA circuit design. A prerequisite to this is a quantitative modeling framework that accurately describes the dynamics of RNA circuits. In this work, we develop an ordinary differential equation model of transcriptional RNA genetic circuitry,...

1. Abstract Phase separation in segmented polyurethanes is an important phenomenon, which affects on characteristic properties of polyurethanes. Morphology, formation and distribution of micro-domains (hard segments and soft segments) are effective parameters on interfacial interaction and adhesion of polyurethane system. In this work segmented polyurethanes based on 4,4 -diphenylmethane diisoc...

Using the ARGUS detector at the e+e storage ring DORIS II, we have measured the Michel parameters , , and for ! l  decays in -pair events produced at center of mass energies in the region of the resonances. Using ! as spin analyzing tags, we nd e = 0:68 0:04 0:08, e = 1:12 0:20 0:09, e = 0:57 0:14 0:07, = 0:69 0:06 0:08, = 1:25 0:27 0:14 and = 0:72 0:18 0:10. In addition, we report the combine...