Light guides have been widely used for transforming line sources into planar illuminators for lighting and display applications. Solid light guides provide good uniformity but still have the issues of heavy weight and material absorption, especially for large applications. Hollow light guides solve the problem of weight, but the uniformity is relatively poor or efficiency could be sacrificed fo...

Bistatic passive synthetic aperture radar (SAR) systems using ground broadcast and wireless network signals suffer from low spatial resolution due to the narrow bandwidths and low carrier frequencies. By exploiting multiple distributed illuminators, multi-static passive radar has the possibility of producing high-resolution SAR images. In this paper, a two-stage image formation approach, which ...

Introduction: Routine methods of teaching gross anatomy including cadaver dissections have been a keystone the curriculum and certain difficulties led medical educationists to explore using modern technology. This study aims share institutional experience incorporating new into routine at Department Anatomy, Faculty Medical Sciences, University Sri Jayewardenepura, Lanka.Methodology: Prior diss...

Activated reconnaissance systems based on target illumination are of high importance for surveillance tasks where targets are nonemitting. Multistatic configurations, where multiple illuminators andmultiple receivers are located separately, are of particular interest. The fusion of measurements is a prerequisite for extracting and maintaining target tracks. The inherent ambiguity of the data ma...

A video-based eye-tracker (e.g., the mobile Eyelink II or Eyelink Remote of SR research, Osgoode, Ontario, Canada) uses video cameras to record the eye position of human subjects, and hence, record pupil dilation and eye movements. The eyetracker puts a video cameras and infrared illuminators in front of the eye to record the position of the eye, cornea reflections, and the size of the pupil. U...

This tutorial describes the basis of passive bistatic radar (PBR) systems, and in particular the nature of the waveforms of illuminators of opportunity that they exploit. It shows that there is a wide variety of such waveforms, from broadcast, communications and radionavigation transmissions, and that in general they are not optimum for radar purposes. In addition, they usually vary significant...

Multimedia push ringer (MPR) is a mobile application that presents a caller‟s identity using various contents, e.g., audio and video and raises many important issues of social cognition. In this study, the influence of multimedia contents on impression formation is examined with a series of experimental procedures in which a genre of music either trot (Korean pop music) or classical music is se...

The article presents the results of energy efficiency study and light quality LED illuminators (lamps) for general lighting, in particular colorimetric parameters, flux modulation photobiological safety. It is shown that two-base lamps with G13 base luminaires outdoor lighting have achieved class A++. E27 indoor fixtures diffusers a output 25–35% lower correspond to classes A+, A, B. Correlated...

Passive, bistatic radar offers an attractive method for remotely detecting and imaging targets without the requirement of a dedicated transmitter. Passive radar systems are usually cheaper than their active counterparts, which easily allows for multi-sensor networks. Furthermore, passive radar systems are difficult to detect and jam. With these advantages come several challenges, however. Bista...

An intense violet–blue emitting (CaCl2/SiO2) : Eu2+ phosphor with a composition of 25% CaCl2 and 75% SiO2 is prepared by a solid state reaction. The phosphor emits at 427 nm with a narrow bandwidth of 21 nm. The photoluminescence (PL) intensities and fluorescence lifetimes are studied as a function of Eu2+ concentrations. It is observed that the PL intensity of (CaCl2/SiO2) : Eu2+ can be 30% hi...