We have studied the kinetics of cluster formation for dynamical systems of dimensions up to n=8 interacting through elastic collisions or coalescence. These systems could serve as possible models for gas kinetics, polymerization, and self-assembly. In the case of elastic collisions, we found that the cluster size probability distribution undergoes a phase transition at a critical time which can...

The biggest obstacle to the efficient discovery of conserved energy functions for cellular auotmata is the elimination of the trivial functions from the solution space. Once this is accomplished, the identification of nontrivial conserved functions can be accomplished computationally through appropriate linear algebra. As a means to this end, we introduce a general theory of trivial conserved f...

A social network is an abstract concept consisting of the set of people with relationships linking pairs of humans. A new multidimensional model, which covers three main dimensions: relation layers, time windows and groups, is proposed in the paper. The dimensions have a common set of nodes, typically, corresponding to human beings Layers, in turn, reflect various relation types coming from dif...

Introduction: In radionuclide imaging, object scatter is one of the major factors leading to image quality degradation. Therefore, the correction of scattered photons might have a great impact on improving the image quality. Regarding this, the present study aimed to determine the main and sub-energy windows for triple energy window (TEW) scatter correction method usin...

A Matlab-based finite-difference numerical solver for the Poisson equation for a rectangle and a disk in two dimensions, and a spherical domain in three dimensions, is presented. The solver is optimized for handling an arbitrary combination of Dirichlet and Neumann boundary conditions, and allows for full user control of mesh refinement. The solver routines utilize effective and parallelized sp...

Simultaneity judgments were used to measure temporal binding windows (TBW) for brief binaural events (changes in interaural time and/or level differences [ITD and ILD]) and test the hypothesis that ITD and ILD contribute to perception via separate sensory dimensions subject to binding via slow (100+ ms)-presumably cortical-mechanisms as in multisensory TBW. Stimuli were continuous low-frequency...

The purpose of this study is to indicate several areas of interest within the Yahoo! Messenger application that are of forensic significance. This study will mainly focus on new areas of interest within the file structure of Windows Vista and Windows 7. One of the main issues with this topic is that little research has been previously conducted on the new Windows platforms. The previously condu...

Broadcasting offers a bandwidth-efficient way of delivering popular content in media-on-demand (MoD) systems. Harmonic windows scheduling (HWS) is a mathematical framework that is relevant to bandwidth minimization in MoD broadcasting. Given c channels, the optimal HWS problem tries to schedule as many pages of a video as possible in the c channels. Let κ be the largest integer n satisfying Hn ...

Introduction. With the adoption of standards to reduce losses in transformers it is necessary change design that remain unchanged. Further energy saving possible with use non-traditional technical solutions for improvement transformers. Problem. In order idle losses, curved magnetic circuits power are carried out form low-volume circuits. Windings injected into assembled conductors by shuttle m...

As a systems administrator on call at any time of day, I want to explore ways to manage the environment and handle emergencies remotely. In this paper, I look at a number of options for remote administration using compact devices. While the most obvious form of remote administration is a laptop computer, not every organization has the budget to provide these to their systems administrators. Als...