In heterogeneous networks (HetNets), the vertical handover (VHO) is an essential process for mobile users (MUs) aiming to secure ubiquitous connectivity and maintain highest quality of service (QoS) across various types radio access technology (RAT), such as wireless fidelity (Wi-Fi), global system communication (GSM), universal telecommunications (UMTS). literature, many recent VHO research wo...

We propose a symbolic-numeric algorithm to count the number of solutions of a polynomial system within a local region. More specifically, given a zero-dimensional system f1 = · · · = fn = 0, with fi ∈ C[x1, . . . , xn], and a polydisc ∆ ⊂ C, our method aims to certify the existence of k solutions (counted with multiplicity) within the polydisc. In case of success, it yields the correct result u...

While Wi-Fi 5 is still sufficient for many organizations and businesses, it important to consider upgrade 6. This article discusses the main differences between The goal identify key metrics transmission of information content signals, a method determining best use signals certain categories use, an analysis study influence frequencies on quality transmitted information, also analyzes growth ra...

The article proposes an algorithm for controlling the electromagnetic environment in a Wi-Fi WLAN using fuzzy logic methods. A power management system access points has been developed, deployed segment based on existing equipment. use of compatibility control high-density networks can significantly improve bandwidth wireless segment.

An increasing number of studies have investigated the effects of different types of corrective feedback. However, doubts have been raised whether field (in)dependent (FI/FD) L2 learners benefit differently from the explicit type of corrective feedback (i.e., metalinguistic). This study examined the (possible) effects of metalinguistic feedback on FI/FD intermediate L2 learners’ writing accuracy...

With the rising industrial interest in cyber-physical systems (CPSs), there has been growing concern in the application of real-time wireless technologies to CPS applications. We proposed in previous work the RT-WiFi protocol that provides realtime high-speed predictable data delivery and enables designs to meet time-critical industrial needs. However, without explicit reliability enforcement m...

In the paper (Theoret. Comput. Sci. 237 (2000)) Anderson present a theorem which characterizes any semiretract S by means of two retracts R and R!: The /rst part of the paper contains a counterexample for this characterization. Then some results are presented which /nally lead to the theorem which determines for a given semiretract S the minimal number of retracts R1; : : : ; Rm such that the e...