Gyrokinetic particle-in-cell (PIC) simulation is an important tool for studying low-frequency (! !ci) plasma instabilities and the associated transport of particles and heat in tokamaks. In spite of the e ciency gained by not following ion cyclotron motion, more e ciency is needed in performing simulations on a transport timescale: using 1 million particles in a system of 64 128 32 grid cells, ...

CoLiDeS + Pic is a cognitive model of web-navigation that takes into account the semantic information from graphical elements present on a web-page to compute the information scent value of the hyperlinks. The model is based on CoLiDeS which has a two-phase processing cycle: (a) attention phase, which first parses the web-page and focuses attention on the region of the web-page that is semantic...

The physical mechanism of the formation of the negative ion beam halo and the heat loads of the multi-stage acceleration grids are investigated with the 3D PIC (particle in cell) simulation. The following physical mechanism of the beam halo formation is verified: The beam core and the halo consist of the negative ions extracted from the center and the periphery of the meniscus, respectively. Th...

In this paper, the performance of the proposed fuzzy logic parallel interference cancellation (FLPIC) multiuser detector is evaluated for frequency-selective fading channels in wireless CDMA communication systems. A modified fuzzy logic system (FLS) with an adequate scaling factor (SF) is proposed to infer adequate partial factors (PFs) for the PIC scheme. Simulation results show that the propo...

Cloud computing provides a convenient and on-demand access to virtually unlimited computing resources. Mobile cloud computing (MCC) is an emerging technology that integrates cloud computing technology with mobile devices. MCC provides access to cloud services for mobile devices. With the growing popularity of cloud computing, researchers in this area need to conduct real experiments in their st...

A 2-D axisymmetric hybrid PIC-MCC model of the acceleration channel and near-field of dielectric wall-type Hall thrusters is tested on an SPT-100 type and a UM/AFRL P5 magnetic field configuration. The location of both the virtual cathode line (VCL) and virtual anode line (VAL) are varied on the SPT-100 type magnetic field configuration to study the model dependence on these parameters. A P5 si...

  Mycoplasma capricolum subsp capricolum (Mcc) is one of the etiological agents of contagious agalactia(C.A) in goats which can cause significant economic losses. The aim of this study was to detect Mcc from goats of Qom province in Iran. A total of 111 samples were collected from suspected goats to C.A and cultured in PPLO broth supplemented for Mcc isolation. The bacteria DNAs were extracted ...

Space-time parallel interference cancellation (ST-PIC) is an effective multi-stage multiuser detection scheme for wideband code-division multiple access (W-CDMA). However, the realization of ST-PIC requires accurate channel estimate, a sufficient number of stages, and knowledge of all user’s spreading waveforms. With inaccurate channel estimate or insufficient number of stages, the residual mul...

A three-dimensional (3D) particle-in-cell (PIC) code based on the template potential concept [1-6] has been upgraded by inclusion of a fully parameterized model for 3D space charge force calculations. The dynamics of a bunched 3D beam were studied for FODO channels having a conducting chamber with an arbitrary elliptical symmetry. The simulation results were in a good agreement with conventiona...