Phase noise is the curse of many a communications system, and one of the key performance parameters that most oscillators strive to minimize. System designers have long recognized the yttrium-iron-garnet (YIG) oscillator for its broadband, lownoise, high-frequency capabilities. But YIG sources are also power hungry and physically large. The mechanical design, with a YIG sphere mounted in the ai...

Detecting people in images is a challenging problem. Differences in pose, clothing and lighting, along with other factors, cause a lot of variation in their appearance. To overcome these issues, we propose a system based on fused range and thermal infrared images. These measurements show considerably less variation and provide more meaningful information. We provide a brief introduction to the ...

challenges facing many diverse industries, including microelectronics, transportation, solid-state lighting, and manufacturing. Technological developments such as microelectronic devices with smaller (sub-100 nm) features and faster (multi-gigahertz) operating speeds, higher-power engines, and brighter optical devices are driving increased thermal loads, requiring advances in cooling. The conve...

Foreground  background segmentation is the primary step of most automated video monitoring system aiming at object tracking, event detection or scene interpretation. In uncontrolled environments, with dynamic background and lighting changes, this basic task is very challenging. This work is based on the hypothesis that the combination of LWIR (8-12 m) and colour cameras can significantly impr...

Technology scaling has brought about dramatic rises in the on-chip power density of modern microprocessors. This has led to greater scrutiny and awareness of thermal management techniques which allows to uphold the thermal integrity of the chip. Higher temperatures or uneven distribution of temperatures result in timing uncertainties which induces performance and reliability concerns for the sy...

Control of the thermal emission spectra of emitters will result in improved energy utilization efficiency in a broad range of fields, including lighting, energy harvesting, and sensing. In particular, it is challenging to realize a highly selective thermal emitter in the near-infrared-to-visible range, in which unwanted thermal emission spectral components at longer wavelengths are significantl...

Lighting calculations are commonly done to evaluate the efficiency of a lighting system. One of the important parameters in establishing a luminaire’s efficiency is the total flux emitted from a luminaire or light source. The luminous flux of a light source can be calculated from readily available data of the measurements of its Luminous Intensity Distribution Function, in the form of table of ...

The application of Low Voltage Direct Current (LVDC) distribution systems have the potential to offer several advantages over the incumbent AC networks. LVDC systems are technically and economically viable in niche applications such as data centres and marine power systems, however they also have the potential to offer improvements in the power transfer capability of existing distribution cable...

................................................................................................................................. IV ACKNOWLEDGEMENTS ........................................................................................................... V TABLE OF CONTENTS ............................................................................................................. VII LIST ...