Permanent magnet synchronous generators (PMSG) have a huge potential for direct-drive wind power applications. Therefore, optimal design of these generators is necessary to maximize their efficiency and to reduce their manufacturing cost and total volume. In this paper, an optimal design of a six-phase 3.5 KW direct-drive PMSG to generate electricity for domestic needs is performed. The aim of ...

Recently, blind multi-user detection has become an important topic in code division multiple access (CDMA) systems. Direct-Sequence Spread Spectrum (DSSS) signals are well-known due to their low probability of detection, and secure communication. In this article, the problem of blind multi-user detection is studied in variable processing gain direct-sequence code division multiple access (VPG D...

today, due to the direct and reverse logistics plays an important role in reducing the costs in supply chain. in this paper, in order to provide a closed-loop supply chain network including supply centers, production, distribution, collection, recycling and disposal of a used linear mixed integer programming. this paper to consider multi-period and multi-product in multi-level supply chain and ...

In a multi-channel environment, an adaptive blind equalizer-bank is presented which, under mild conditions, equalizes the channel-bank automatically. This adaptive blind equalizer is adaptive only to its own output, not to its input, i.e., the channel output.

Dark matter candidates comprising several sub-states separated by a small mass gap ∆m, and coupled to the Standard Model by (sub-)GeV force carriers, can exhibit nontrivial scattering interactions in direct detection experiments. We analyze the secluded U(1)S-mediated WIMP scenario, and calculate the elastic and inelastic cross sections for multi-component WIMP scattering off nuclei. We find th...

Temporal constraints are part of the specification of many complex application frameworks including planning, scheduling, real-time systems, workflow and cooperative systems. This paper investigates the problem of converting among quantitative temporal constraints expressed in terms of different time granularities. An expressive formal model for time granularities is assumed including common gr...

Multi-label problems arise in different domains such as digital media analysis and description, text categorization, multi-topic web page categorization, image and video annotation etc. Such a situation arises when the data are associated with multiple labels simultaneously. Similar to single label problems, multi label problems also suffer from high dimensionality as multi label data often hap...

Abstract Bioinspired Multi-Metal Structures (MMSs) combine distinct properties of multiple materials, benefiting from improved and providing superior designs. Additive Manufacturing (AM) exhibits enormous advantages in applying different materials geometries according to the desired functions at specific locations structure, having great potential fabricating multi-materials structures. However...

The Computer Aided Design has constantly evolved since its appearance at the beginning of 1960s. This work summarize the history of CAD and analyze the development perspectives. Particularly have been studied the actual main topics in CAD as the data transfer problem and the debate between feature based and direct modeling. It also has been studied the impact of new available technologies as to...