Head-mounted display (HMD) technologies find a variety of applications in the field of 3D virtual and augmented environments, 3D scientific visualization, as well as wearable displays. While most of the current HMDs use head pose to approximate line of sight, we propose to investigate approaches and designs for integrating eye tracking capability into HMDs from a low-level system design perspec...

This dissertation focuses on advanced signal processing techniques for mul-ticarrier modulation in two application scenarios: underwater acoustic (UWA) communication and passive radar. In UWA communication, multicarrier transmission promises a substantial increase in data rate, following the path of recent success of broadband wireless radio communications. However, UWA channels are much more c...

In city farming, when growing green crops, a significant part of the production cost is electricity for lighting. The physiology, biochemistry, morphology and productivity plants can be affected by changing irradiation modes these changes reduce costs. However, results studies in literature are contradictory. this work, we investigated effect impulse (frequency 1000 Hz duty cycle 67%), scanning...

For purpose of saving cost the generation of wireless mobile communicat ion evolved into LTE system by using MIMO-OFDM technology. But for the higher data rate it expenses higher energy. So, an efficient antenna management system is needed to be designed to save energy per bit transmission. In MIMO there are mult iple RF channels for transmitting data which consumes much energy. In the case of ...

Scoring rubrics are currently used by students and teachers in classrooms from kindergarten to college across North America. They are popular because they can be created for or adapted to a variety of subjects and situations. Scoring rubrics are especially useful in assessment for learning because they contain qualitative descriptions of performance criteria that work well within the process of...

Near-space, defined as the region between 20 km and 100 km, offers many new capabilities that are not accessible to low earth orbit (LEO) satellites and airplanes, because it is above storm and not constrained by either the orbital mechanics of satellites or the high fuel consumption of airplanes. By placing radar transmitter/receiver in near-space platforms, many functions that are currently p...

Dear Sir, Accessory nipples are solitary or multiple rudimentary nipples developing along the two vertical ‘milk-lines’. Most cases are sporadic and asymptomatic. Accessory nipple occurs in 1-6% of the population and affects both genders equally.1 It is often mistaken as dermatofi broma in clinical or dermatoscopic examination. Blum et al. have reported a case of accessory nipple indistinguisha...

Recently many studies have been done on different issues of using multiple antennas at transmit and receive sides of a radar system in a MIMO (Multiple Input Multiple Output) configuration. In addition, for the purpose of electronic warfare, the utilization of available signals of the environment to detect the targets has gained considerable attention in recent years. Such passive radars use th...

The 1980 Xerox optical mouse invention, and subsequent product, was a successful deployment of embedded vision, as well as of the Mead–Conway VLSI design methodology that we developed at Xerox PARC in the late 1970s. The design incorporated an interpretation of visual lateral inhibition, essentially mimicking biology to achieve a wide dynamic range, or light-level-independent operation. Conceiv...

Active imaging can provide significantly larger signal margins in the millimeter-wave spectral region than passive imaging, especially indoors-an important application for which there is no cold sky illumination. However, coherent effects, such as speckle, negate much of this advantage by destroying image clarity and target recognition. Moreover, active imaging demonstrations often use strategi...