The Casimir force is calculated in the configuration of two parallel plates separated by an anisotropic media. result exhibits a dependence on orientation optical axis intervening It possible that switches its direction as varies. greatest magnitude could be achieved at any orientation, depending dielectric properties and A comparison between relativistic nonrelativistic revealed approximation ...

Density functional theory calculations on [Cu2(O2CR)4L2] systems reveal a change in ground state with increasing Cu-L bond strength. For L = N-heterocyclic carbene (NHC), the Jahn-Teller axis switches from parallel to orthogonal to the Cu-Cu vector and the copper coordination geometry becomes highly flexible. While the calculated dimer/monomer equilibrium for isolated complexes slightly favours...

modeling and simulation of communication circuits at high frequency are important challenges ahead in the design and construction of these circuits. knowing the fact that the lumped element model is not valid at high frequency, distributed analysis is presented based on active and passive transmission lines theory. in this paper, a lossy transmission line model of traveling wave switch (twsw) i...

Reconngurable communication networks for massively parallel multiprocessor systems ooer the possibility to realize a number of application demands like special communication patterns or real-time requirements. This paper presents the design principle of a reconngurable network which is able to realize any graph of maximal degree four. The architecture is based on a special multistage Clos netwo...

Modern switches and routers often use dynamic RAM (DRAM) in order to provide large buffer storage space. However, the effective bandwidth of DRAM is frequently a limiting factor in the design of high-speed switches and routers. The focus of this paper is to introduce a packet-buffering architecture called the parallel packet buffering (PPB), which increases the effective memory bandwidth signif...

Received Apr 29, 2012 Revised Jan 7, 2013 Accepted Jan 24, 2013 Multilevel inverters can reach the increasing demand for power quality and power ratings along with lower harmonic distortion and lesser electromagnetic interference (EMI). As the number of levels increases, it is important to control more switches in parallel with their concurrent processing capability. In this paper space vector ...

Photovoltaic (PV) modules comprise bypass diodes to limit hotspot formation. However, they suffer from performance reduction in the presence of partial shading. This paper proposes external circuitry control connection type (series/parallel) PV cells through a pair on/off switches resulting three different operation modes. Mode 1 represents typical 36 series-connected cells, while mode 2 two pa...

There is a widespread interest in switching architectures that can scale in capacity with increasing interface transmission rates and higher port counts. Furthermore, packet switches that provide Quality of Service (QoS), such as bandwidth and delay guarantees, to the served user traffic are also highly desired. This report addresses the issue of constructing a high-capacity QoS-capable, multi-...

Today, various high speed transmission technologies and protocols such as Fiber Channel, FDDI, ATM and Fast Ethernet are wide spread, complemented by systemor local area communication networks such as HIPPI, OMI-HIC [IEEEP], Myrinet [Boden95], RACEway [Mercury95], Memory Channel [Gillet96] and SCI (Scalable Coherent Interface) [IEEE92]. This paper discusses the efficient use of 4-port SCI switc...

Coordinated excitatory and inhibitory activity is required for proper brain functioning. Recent computational experimental studies have demonstrated that patterns in recurrent cortical networks are dominated by inhibition. Whereas previous suggested plasticity important homeostatic control, this new framework puts inhibition the driver’s seat. Complex neuronal comprise many configurations paral...