In this paper, we present a novel geometrically driven multilateration technique that is based on Ultra-Wideband (UWB) technology. We refer to our proposed solution as Time Reflection of Arrival (TROA). We demonstrate in this paper that the position estimation error is improved upon by carefully considering the inherent properties of the UWB technology and the reflection properties of transmitt...

We present an acoustic rendering approach visualizing the listener-specific contribution of frequency-dependent pressure fields on a scene geometry with acoustic reflection and scattering properties. Our method facilitates the evaluation of simulated acoustics showing the effect of simulation parameters like absorption and scattering. The image-based spatial localization of acoustic properties ...

We give a detailed analysis of a general realization of reflection terahertz time-domain spectroscopy. The method is self-referenced and applicable at all incidence angles and for all polarizations of the incident terahertz radiation. Hence it is a general method for the determination of the dielectric properties of especially liquids in environments where transmission measurements are difficul...

James D. Van de Ven Arthur G. Erdman University of Minnesota Mechanical Engineering Department 111 Church Street SE Minneapolis, Minnesota 55455 E-mail: [email protected] Abstract. Modeling laser transmission welding of thermoplastics requires knowledge of the optical properties of the two materials being joined. Previous work measuring optical properties for this purpose placed little import...

The bidirectional reflectance distribution function (BRDF) formalism is commonly used in computer graphics to represent surface reflection properties. Although many BRDF models have been proposed, most do not possess at least some of the desirable practical properties. In this paper we present a simple and flexible model which satisfies many of these requirements. We show that the proposed mode...

We present an alternative definition of impedance to describe the reflection at the interfaces of photonic crystals. We show that this effective impedance can be defined only by the properties of the photonic crystal modes and is independent of the properties of the incident region. This approximate model successfully explains the main features in the reflection spectrum and of various interfac...

Personal reflection is seen as an essential and trainable professional quality in doctors and other health care practitioners and is increasingly promoted in health care education. A more precise understanding of its nature and value for optimal patient care is needed for its purposeful use in practice and for effective encouragement in education. This article offers a conceptual framework to h...

Personal reflection is seen as an essential and trainable professional quality in doctors and other health care practitioners and is increasingly promoted in health care education. A more precise understanding of its nature and value for optimal patient care is needed for its purposeful use in practice and for effective encouragement in education. This article offers a conceptual framework to h...

An attempt is made to analyse the effect of variation in thermal properties in Fibre Metal Laminate with an implanted delamination. This work focuses to explore the variations in thermal contrast for the increase in values of thermal properties of delamination, Aluminium layers and glass reinforced epoxy layers. The paper projects the numerical investigations towards the thermal analysis of fib...

To appropriately reproduce a real object in a mixed environment, it is necessary to estimate reflectance properties of object surfaces. This paper describes a new method of densely estimating non-uniform surface reflectance properties of an object with convex and concave surfaces using registered range and surface color texture images obtained by a laser rangefinder. The proposed method determi...