User mobility is rapidly becoming an important and popular network feature. This is especially evident in wireless/cellular networks where user mobility raises a number of important security issues and concerns. Foremost among them is the ability to track mobile users' movements and whereabouts. Ideally, no entity other than the user himself and a responsible authority in the user's home domain...

In Long Term Evolution (LTE), the cells (the radio coverages of base stations) are grouped into the Tracking Areas (TAs), and the TAs are further grouped into the TA List (TAL). The location of the User Equipment (UE) is tracked at the TAL level. To better capture the “movement locality” of the UE, when the UE leaves the current TAL, the UE is assigned a new TAL whose central TA is the TA where...

This paper proposes the mobility-dependent resource reservation (MDRR) based admission control (AC) to provide the flexible usage of limited resource in wireless multimedia networks. The area of a cell is divided into the non-reservation, pre-handoff, and handoff zones. As mobile stations move into the pre-handoff zone and is leaving the serving base station, bandwidth is reserved in the target...

This report deals with a 1/f noise in homogeneous classical semiconductor samples on the base of silicon. We perform detail calculations of resistance fluctuations of the silicon sample due to both a) the charge carrier number changes due to their capture-emission processes, and b) due to screening effect of those negative charged centers, and show that proportionality of noise level to square ...

Globalisation, perhaps paradoxically, implies increased regionalisation: nation states come more and more to resemble regions of the global economy as international factor mobility increases. The present paper presents a new perspective on the modelling of regional economies. The fixed-cost element of public infrastructure is emphasised: this allows both the tax-base effect and congestion to be...

DNA restriction fragments, 120-650 base pairs (bp) in length, with 5'-GCGC-3', 5'-GGCC-3' or 3'-GCGC-5' single-stranded overhanging termini, give rise to diffuse bands of unusual electrophoretic mobility in non-denaturing polyacrylamide gels. This shift in electrophoretic mobility can be observed at 4-12 degreesC, not at higher temperatures, but is stabilized by 5-10 mM Mg2+, even at 37 degrees...

Shared Tree multicast is a well established concept used in several multicast protocols for wireline networks (eg. Core Base Tree, PIM sparse mode etc). In this paper, we extend the Shared Tree concept to wireless, mobile, multihop networks for applications ranging from ad hoc networking to disaster recovery and battlefield. The main challenge in wireless, mobile networks is the rapidly changin...

Two-dimensional fractionation method suitable for analyzing oligonucleotide mixtures in the microRNA size range was devised. In this system, mobility of oligo-nucleotide is affected by its base composition in both dimensions. Thus, complex mixtures of oligonucleotides with similar chain length can be effectively fractionated.