The behaviour of light transmitted through an individual subwavelength aperture becomes counterintuitive in the presence of surrounding 'decoration', a phenomenon known as the extraordinary optical transmission. Despite being polarization-sensitive, such an individual nano-aperture, however, often cannot differentiate between the two distinct spin-states of photons because of the loss of photon...

design, simulation and optimal selection of cosine-linear frequency modulation waveform (cnlfm) based on correlated ambiguity function (af) method for the purpose of synthetic aperture radar (sar) is done in this article. the selected optimum cnlfm waveform in contribution with other waveforms are applied directly into a sar image formation algorithm (ifa) and their quality effects performance ...

A thin plate of bone usually separates coronoid and olecranon fossa in the distal end of humerus. In some humerii this bony plate is perforated to form an aperture. This present study was conducted on 500 dried adult humerii. The incidence of septal aperture, its shape, transverse diameter and vertical diameter was measured. The septal aperture was found in 31% of humerii. The incidence was mor...

Locating hydrocarbon reservoirs has become more challenging with smaller, deeper or shallower targets in complicated environments. Controlled-source electromagnetics (CSEM) is one geophysical method used by industry to find and derisk reservoirs in marine settings. The diffusive nature of CSEM fields means the signal from the target is only a small part of the total field. To reduce the impact ...

Except in the case of very low-bit signals (images), unconstrained design of mean-square-error optimal digital window-based "lters from sample signals is hampered by the inability to obtain su$cient data to make acceptably precise estimates of the large number of conditional expectations required for the "lter. Even under typical nonlinear constraints such as increasingness or iterative decompo...

© 1994 National Semiconductor Corporation http://www.national.com Printed in the U.S.A. The Nyquist sampling theorem states that band limited signals may be represented without error by sampled data. Among the effects which place additional restrictions on the signal, beyond those which are given by the Nyquist theorem, are aperture effects. Aperture effects such as aperture jitter, and apertur...

Successful operation of NSLS-II requires sufficient dynamic aperture for injection, as well as momentum aperture for Touschek lifetime. We explore the dependence of momentum and dynamic aperture on higher-order multipole field errors in the quadrupoles and sextupoles. We add random and systematic multipole errors to the quadrupoles and sextupoles and compute the effect on dynamic aperture. We f...