As various wireless networks supporting mobile devices have been widely deployed, many researchers are interested in evaluating the effect of interferences among them. It is due to that these heterogeneous collocated wireless networks tend to be asymmetric in terms of transmission power and carrier sense threshold, resulting in unfair channel access and degraded performance of victim networks. ...

In this work, we present an algorithm to analytically estimate the queueing performance of MPEG-2 video using goodput as the metric; where we define goodput as the ratio between the number of cells in uncorrupted and correctly displayable frames to the total number of cells that arrive at the queue. The estimation algorithm is used to evaluate three buffer management schemes. The effect of cong...

This paper presents the analysis of a renewal input  finite buffer queue wherein the customers can decide either to  join the queue with a probability or balk. The service process is Markovian service process ($MSP$) governed  by an underlying $m$-state Markov chain. Employing the supplementary  variable and imbedded Markov chain techniques,   the steady-state system length distributions at pre...

In smart grid research domain, simulation study is the first choice, since the analytic complexity is too high and constructing a testbed is very expensive. However, since communication infrastructure and the power grid are tightly coupled with each other in the smart grid, a well-defined combination of simulation tools for the systems is required for the simulation study. Therefore, in this pa...

The present research develops and tests a hierarchical model of the underlying behavioral processes of team cognition. Team cognition is represented as a second-order construct comprised of three first-order dimensions (team learning, team reflexivity, and team mental model). The proposed second-order construct was embedded in a nomological network as a mediator between collaboration mode (coll...

This paper describes methods for document image classification at the spatial layout level. The goal is to develop fast algorithms for initial document type classification without OCR, which can then be verified using more elaborate methods based on more detailed geometric and syntactic models. A novel feature set called interval encoding is introduced to capture elements of spatial layout. Thi...

sacrificed, efficient controls have to be studied and developed. Feedback control techniques use measurement and estimates of the system states for control of rigid-body motion and vibration suppression. In this case, using measurements at the hub and end-point of the manipulator as the basis for applying control torque at the hub will allow control of the end-point position. Thus, feedback con...