We consider the cosmology of a “3-brane universe” in a five dimensional (bulk) space-time with a cosmological constant. We show that Einstein’s equations admit a first integral, analogous to the first Friedmann equation, which governs the evolution of the metric in the brane, whatever the time evolution of the metric along the fifth dimension. We thus obtain the cosmological evolution in the br...

In this paper, fundamental limitations of the Control Grid Interpolation and Block Matching schemes for motion compensation are remedied by a novel idea which embodies positive features of both schemes. The enhanced scheme performs both consistently and signiicantly better than either method does individually.

This paper presents the design of a new error compensation model for providing QoS support on a wireless network. The compensation model uses different compensation strategies for the different priority classes in conjunction with a Multiclass Priority Fair Queuing (MPFQ) algorithm. Criteria for fair error compensation and a classification of error compensation models are established in order t...

A way of introducing compensation of camera caused global motion into MPEG-2 is described in this paper. A videocoding method is proposed where global motion estimation of four parameters regarding horizontal and vertical scrolling, zooming and rotation is performed and a global-motioncompensated image is produced for use as a reference frame for MPEG-2 coding. The experimental results have sho...

A coder for television video signals working at a bit-rate of 1.15 Mbit/s is presented. It uses a special coding structure facilitating trick modes and a separated global and local motion compensation. Global motion is described by a central zoom and pan model. For the estimation of global motion a frame matching algorithm is explained. The advantages of using global motion parameters are given...

In MPEG-4, global motion estimation (GME) and global motion compensation can improve the visual quality of local motion estimation/compensation. However, the computational complexity of GME is very high. Even the existing fast algorithm, FFRGMET, in the MPEG-4 OM3 software is not fast enough. In this paper, we propose a fast GME algorithm called APSGME. It uses motion vectors from the PMVFAST l...

among the studies related to power systems are the contingency analysis for judging the system security and short circuit study for relay coordination. due to continuous and repeated performation of these studies for different system configurations, the solution algorithms but also on applied numerical techniques. compensation and partial matrix refactorization are two methods that are often us...

An extensive literature is devoted to differences between for-profit and non-profit health-care providers' prices, utilization, and quality. Less is known about for-profit and non-profit managers' compensation and its relationship with financial and quality performance. The aim of this study is to examine whether for-profit and non-profit nursing homes place differential weights on financial an...

The Bureau of Labor Statistics’ Survey of Occupational Injuries and Illnesses (SOII) is an important source of information for workplace injuries. Recent work comparing the SOII to Workers’ Compensation (WC) administrative data concludes that the SOII undercounts injury and illness cases. Because the SOII is a sample, case by case comparisons between the two sources must distinguish between WC ...