induction motors are the most commonly used in the traction industries and electric vehicles, due to their low primary cost, low maintenance costs, and good performance. speed identification is needed for the induction motor drives. however, using of speed sensors in the induction motor drives is associated with problems such as, extra cost, reduced reliability, added mounting space, etc.. ther...

Providing Internet connectivity to rural regions in developing countries is a challenging proposition. To effectively serve the needs of the rural poor, solutions need to be low-cost, in addition to being reliable and scalable. Mechanical backhaul networks are a low-cost solution to providing delay tolerant connectivity to such regions. In these networks, shared kiosk-based computers in village...

In recent years, many high speed congestion control algorithms have been proposed for utilizing network pipes with large bandwidth-delay product, and some of them have also been implemented in popular operating systems. Since the Internet is and tends to be lightly-loaded and there are many bandwidth-greedy applications, high speed congestion control algorithms may be used by many flows of the ...

Results. Reading acuity scores obtained with Courier were better than those obtained with Times for both normal (mean difference, 0.05 logMAR, P < 0.001) and subjects with low vision (0.09 logMAR, P < 0.001). Similarly, critical print sizes measured with Courier were smaller than those measured with Times (mean difference, 0.06 logMAR for normal subjects and subjects with low vision, P < 0.002)...

It is thought by cognitive scientists and typographers alike, that lower-case text is more legible than upper-case. Yet lower-case letters are, on average, smaller in height and width than upper-case characters, which suggests an upper-case advantage. Using a single unaltered font and all upper-, all lower-, and mixed-case text, we assessed size thresholds for words and random strings, and read...

in this research paper, the performance of an air-cored axial flux permanent magnet synchronous generator is evaluated for low speed, direct drive applications using 3d finite element modeling and experimental tests. the structure of the considered machine consists of double rotor and coreless stator, which results in the absence of core losses, reduction of stator weight and elimination of cog...

A variety of Internet traffic characterization and source models already exist. Since the origin of the analyzed data differs, a comparison of the reported traffic characteristics is difficult. In this paper, we analyze an IP packet trace and relate the trace data to the user access speed recorded at the same time. The obtained characteristics are contrasted with a second data set measured with...

The evolution of internet access and use in Brazil in the direction of social inclusiveness and to guarantee uses that promote individual and community development is the focus of the present paper. Previous evidence on the subject initially presented indicates the prevalence of contrasting aspects: some outstanding positive initiatives and results towards democratization of the internet, as we...

Notwithstanding the inconclusive status of the public policy debate on intervention in support of broadband Internet access, wireless broadband can play an important role in the overall adoption of broadband in the U. S. Results from a recent consumer survey of broadband demand attributes informs here a discussion of wireless broadband, including the key role of reliability, wireless as an elem...