the subject under investigation has been electronic learning (e-learning) or electronic education (e-education), specifically concentrating on virtual university. virtual university has been the subject of much debate in recent years. in short, the concept of virtual university denotes a learning/educational system/environment based on internet where higher education is promoted using tools and...

background : along with emersion of the internet, virtual education increasingly has been growing. many studies discussed this method and its impact on learning. present study investigated students’ attitude towards virtual education as well as its effect on learning. methods : this was a pretest-posttest quasi-experimental study. the nursing students, who had selected fluids and electrolyte di...

In this paper, we propose our work on camera network using the MIMO Y channel. In this setup, each camera delivers information for connected cameras via the intermediate relay while receiving side information from other cameras. As an example for demonstrating the validity of proposed scheme, we introduce an interesting application of our camera network to sports activity analysis, where a virt...

We propose a theory which exploits the charge-exchange reactions (3He,3Hπ+) and (p,nπ+) as effective sources of virtual pions. We consider processes in which the creation of virtual pions is followed by conventional coupled-channel pion scattering to discrete nuclear states. This picture allows us to incorporate successful theories of pion scattering and utilize virtual pions as probes of the n...

In this Paper the exact expressions for the Symbol Error Probability (SEP) of Hybrid Selection/Maximal Ratio Combining wireless systems for M-ary QAM are derived and analyzed in multipath fading environment. Independent Rayleigh fading diversity branch is assumed for analysis with equal Signal-to-Noise Ratio averaged over the fading channels and coherent detection of M-ary Quadrature amplitude ...

While for single processor and SMP machines, memory is the allocatable quantity, for machines made up of large amounts of parallel computing units, each with its own local memory, the allocatable quantity is a single computing unit. Where virtual address management is used to keep memory coherent and allow allocation of more than physical memory is actually available, virtual communication chan...

eParticipation requires some form of authentication. Most of Web 2.0 services are based on virtual identities. As social networks and reputation-based systems for products and services are increasingly complementing people's real world life with new web-based relations and experiences, the referred virtual identities are evolving towards more genuine and less ambiguous references to social iden...

In this paper, we present a collaborative volume rendering application which can be used in distributed virtual environments. The application allows the users to collaboratively view volumetric data and manipulate the transfer functions. Furthermore, 3D markers can be used to support communication. The collaborative setup includes a full duplex audio channel between the virtual environments. Th...