Simple and explicit expressions for the phase shifts that p- and s-polarized light experience in frustrated total internal reflection (FTIR) and optical tunneling by an embedded low-index thin film are obtained. The differential phase shifts in reflection and transmission deltar, deltat are found to be identical, and the associated ellipsometric parameters psir, psit are governed by a simple re...

In this work, we experimentally demonstrate a bi-directional transmission link using light emitting diode (LED) visible light communication (VLC) for both downlink and uplink paths. Time-division-duplex (TDD) is proposed and demonstrated to significantly eliminate the reflection interference in VLC. A free space bi-directional transmission of 2 m using simple on-off keying (OOK) modulation with...

We describe how the calculus of partial inductive definitions is used to represent logics. This calculus includes the powerful principle of definitional reflection. We describe two conceptually different approaches to representing a logic, both making essential use of definitional reflection. In the deductive approach, the logic is defined by its inference rules. Only the succedent rules (in a ...

Motivated by the recent demonstration of asymmetric transmission of light through stratified systems of various anisotropic metamaterials, we have established generalized reciprocal relations for both transmission and reflection for these systems referring to the two cases of incidence from opposite directions. These relations reduce to those derived previously for simple isotropic systems whic...

Reflection on practice is a key skill for nurses. Engaging in regular reflection enables practitioners to manage the personal and professional impact of addressing their patients' fundamental health and wellbeing needs on a daily basis. This article briefly reviews the theoretical background underpinning the idea of reflective practice. A simple, three-step model for practical reflection is pre...

This paper presents the concept of reflection, where a program modifies its own interpretation. A number of applications of reflection are examined and it becomes apparent that the technique is particularly applicable to the implementation of object-oriented languages. The paper then considers how the technique can be applied to the implementation of Object Petri Nets (OPNs), a formalism for mo...

Architectural reflection is the computation performed by a software system about its own software architecture. Building on previous research and on practical experience in industrial projects, in this paper we expand the approach and show a practical (albeit very simple) example of application of architectural reflection. The example shows how one can express, thanks to reflection, both functi...

Preliminary results from an X-ray spectral study of Seyfert 1 galaxies with ASCA and RXTE are presented. From an analysis of X-ray reprocessing features of Compton reflection and Fe Kα fluorescence, it is found that iron line strength is not necessarily a good predictor of the amount of reflection. The variability properties of Fe Kα and reflection do not necessarily scale together and substant...