Virtual worlds (VW) have paved a new and important channel for workplace collaborations. However, analysts have noted that several organizations that made a strong entrance into using VW as a nouveau channel for communication and collaboration are stepping back due to limited user response. Motivated by this fact, we propose a trust-theoretic ‘virtual world model’ for communication and collabor...

This article study chip communication mechanisms deeply based on the NoC (Network on Chip) technology and a load equalization of virtual channel (LEVC) routing algorithm for Torus networks is proposed, which splits the physical network into virtual networks in the case of physical link load equalization. According to the predefined rules, packets use different virtual networks on their way to d...

Virtual worlds (VW) have paved a new and important channel for workplace collaborations. However, analysts have noted that several organizations that made a strong entrance into using VW as a nouveau channel for communication and collaboration are stepping back due to limited user response. Motivated by this fact, we propose a trust-theoretic ‘virtual world collaboration model’ for collaboratio...

This paper presents a methodology for mapping a web page onto a 3D virtual reality environment enriched with haptic feedback and an application that has been developed according to the proposed methodology and gives blind people the opportunity to navigate through the internet by touch. According to the proposed haptic navigation in the world wide web, haptic and virtual modalities are combined...

A tactical ad hoc network is usually divided into several subnets by Code Division Multiple Access with frequency hopping sequences. In practice, the number of subnets needed in common tactical task is much lower than the theoretical networking capacity, which causes serious code resource waste. To make full use of idle code resources, we present a single-transceiver multi-channel routing proto...

Strained Siand SiGe-based heterostructure MOSFETs grown on relaxed SiGe virtual substrates exhibit dramatic electron and hole mobility enhancements over bulk Si, making them promising candidates for next generation CMOS devices. The most heavily investigated heterostructures consist of a single strained Si layer grown upon a relaxed SiGe substrate. While this configuration offers significant pe...

In this paper, we propose a pilot−symbol−aided iterative channel estimation for coded OFDM−based systems. We use the symbol APP provided by the channel decoder to form groups of virtual pilots. According to their reliabilities, we combine these groups to improve the channel estimation. We also compare the proposed algorithm with the EM algorithm.

In order for ATSC DTV receivers to operate properly, the PSIP/PSI data in the broadcast stream must be correct, complete, and internally consistent. This paper describes a graphical approach to showing the interrelationships among the PSIP/PSI tables in a DTV broadcast stream and highlighting any inconsistencies. Key aspects of this approach are: (1) the use of color coding to provide an “at a ...

A new framework is proposed to mitigate the adverse effect of time-varying time delays on the passivity of a teleoperation system. To this end, the communication channel with time-varying delays is modeled as a constant-delay channel along with additive output disturbances. Then, disturbance estimator blocks are added in each of the feedforward and feedback paths to estimate these disturbances ...

In this paper we study the effect of channel sharing on the performance of multihop lightwave networks when channel sharing is achieved b y using a time-division multiple-access (TDMA) technique. We present a result which gives an upper bound for the throughput that can be achieved with any virtual topology that can be established with N stations assuming that the t raf ic distribution i s unif...