Optical networks based on passive star couplers and employing wavelength-division multi-plexing (WDM) have been proposed for deployment in local and metropolitan areas. These networks suuer from splitting, coupling, and attenuation losses. Since there is an upper bound on transmitter power and a lower bound on receiver sensitivity, optical ampliiers are usually required to compensate for the po...

| Optical networks based on passive-star couplers and employing wavelength division multiplexing (WDM) have been proposed for deployment in local and metropolitan areas. These networks suuer from splitting, coupling, and attenuation losses. Since there is an upper bound on transmitter power and a lower bound on receiver sensitivity , optical ampliiers are usually required to compensate for the ...

background & aim: saffron (crocus sativus l.) formerly was important in turkey. saffron cultivation has been decreased and it is now only cultivated in three villages in this country. it is triploid and exclusively propagated in a vegetative way by corms. in turkey, saffron is traditionally planted by placing corms in rows randomly without grading or sorting; which results in placement of c...

Congenital central hypoventilation syndrome is a rare syndrome present from birth, and is defined as the failure of automatic control of breathing. All patients with congenital central hypoventilation syndrome require life-long ventilatory support during sleep, although approximately a third of patients require ventilatory support 24 h per day. Diaphragm pacers offer a modality of ventilatory s...

A new parallel imaging technique was implemented which can result in reduced image acquisition times in MRI. MR data is acquired in parallel using an array of receiver coils and then reconstructed simultaneously with multiple processors. The method requires the initial estimation of the 2D sensitivity profile of each coil used in the receiver array. These sensitivity profiles are then used to p...

Efficient multi-receiver delivery of video data over computer networks, such as the Internet is still challenging, due to heterogeneity in involved network technologies, end-node capabilities and receiver preferences. While adaptive and scalable video encoding can solve many of the problems caused by heterogeneity, media gateway systems are needed for performing video filtering and transformati...

This work demonstrates the design and development of a magnetic levitation (MagLev) system that is able to control both position orientation levitated object. For control, pole placement method was exploited estimate parameters proportional integral derivative (PID) controller. In addition, MagLev constructed using pair electromagnets, two infrared (IR) receiver-emitter pairs servo motor allow ...