Macro cells’ (MCs) densification with small cells (SCs) is one of the promising solutions to cope increasing demand for higher data rates in 5G heterogeneous networks (HetNets). Unfortunately, interference that arises between these densely deployed SCs and their elevated power consumption have caused huge problems facing HetNets. In this paper, a new soft frequency reuse (SFR) scheme proposed m...

Gas is trapped in polar ice sheets at ∼50–120m below the surface and is therefore younger than the surrounding ice. Firn densification models are used to evaluate this ice age-gas age difference (∆age) in the past. However, such models are not well tested on low accumulation and cold sites of the East Antarctic plateau, especially for 5 periods with different climatic conditions. Here we bring ...

YBa2Cu3O7-X tapes fabricated from precursor powder, were used to investigate the effect of sintering conditions on the microstructure. The sintering experiments were carried out in oxygen over the temperature range of 915-950ْC. Scanning electron microscopy was used to examine the sintered products. The result indicated a significant increase in densification and grain growth when the tapes were...

densification of biomass material that usually has a low density is proper way to increasing density,reduce transportation cost and simplify storage and distribution of these materials. pellet productionusing extrusion process is a common method for densification. the goal of this research isoptimization of specific energy consumption for extrusion process considering its effect on pelletdensit...

paulownia is one of the fast-growing species that was attended to supply industrial requirement in recent years. the application of this species is limited because of low density, so wood modification via compression and densification is an effective method. for this purpose, the paulownia boles were prepared from shastkalateh forest and cut into blocks with 60×20×20 mm dimension. the variable ...

The next generation expected to provide high data rate to handle the huge demand on new dataconsuming applications and services, Also the higher number of connected devices due to using new technologies such as internet of things (IoT) will make the challenge more difficult. New techniques must be used to face this challenges such as base station densification, use new high frequency bands, Mac...

The introduction of new materials and processes to microfabrication has, in large part, enabled many important advances in microsystems, lab-on-a-chip devices, and their applications. In particular, capabilities for cost-effective fabrication of polymer microstructures were transformed by the advent of soft lithography and other micromolding techniques (1, 2), and this led a revolution in appl...

Densification is one method used to modify low-density woods make them achieve the hardness required for flooring application. The purpose of this study was investigate effect thermo-mechanical densification with pre-heating in wood Alnus acuminata, Vochysia ferruginea and guatemalensis from, seeking stabilize reduce spring-back densified evaluate its performance applications. results showed th...

This article presents a characterization of different LTE-Advanced network deployments with regard to downlink interference and resource usage. The investigation focuses on heterogeneous networks (HetNets) with dedicated spectrum for each layer and, in particular, on cases where small cells are densely deployed. Thus, the main interference characteristics of the macro layer and the dense small ...

5G mobile networks are expected to provide pervasive high speed wireless connectivity, to support increasingly resource intensive user applications. Network hyper-densification therefore becomes necessary, though connecting to the Internet tens of thousands of base stations is non-trivial, especially in urban scenarios where optical fibre is difficult and costly to deploy. The millimetre wave (...