Search results for "GATT"

Resource Allocation and Computation Offloading for Multi-Access Edge Computing With Fronthaul and Backhaul Constraints

2021

Edge computing is able to provide proximity solutions for the future wireless network to accommodate different types of devices with various computing service demands. Meanwhile, in order to provide ubiquitous connectivities to massive devices over a relatively large area, densely deploying remote radio head (RRH) is considered as a cost-efficient solution. In this work, we consider a vertical and heterogeneous multi-access edge computing system. In the system, the RRHs are deployed for providing wireless access for the users and the edge node with computing capability can process the computation requests from the users. With the objective to minimize the total energy consumption for proces…

Spectrum and energy efficient solutions for OFDMA collaborative wireless networks

2013

Transmission Optimization and Resource Allocation for Wireless Powered Dense Vehicle Area Network With Energy Recycling

2022

The wireless-powered communication paradigm brings self-sustainability to the on-vehicle sensors by harvesting the energy from radiated radio frequency (RF) signals. This paper proposes a novel transmission and resource allocation strategy for the scenario where multiple wireless powered vehicle area networks (VAN) co-existed with high density. The considered multi-VAN system consists of a remote master access point (MAP), multiple on-vehicle hybrid access points (HAPs) and sensors. Unlike previous works, we consider that the sensors can recycle the radiated radio frequency energy from all the HAPs when HAPs communicate with MAP, so the dedicated signals for energy harvesting (EH) are unnec…

Sulfate sensitivity of aquatic organism in soft freshwaters explored by toxicity tests and species sensitivity distribution

2023

Elevated concentrations of sulfate in waterways are observed due to various anthropogenic activities. Elevated levels of sulfate can have harmful effects on aquatic life in freshwaters: sulfate can cause osmotic stress or specific ion toxicity in aquatic organisms, especially in soft waters where Ca2+ and Mg2+ concentrations are low. Formerly, chronic toxicity test data in soft water have been scarce. The chronic and acute sulfate toxicity tests conducted with aquatic organisms from 10 families across various trophic levels in this study multiplied the number of tests conducted in soft freshwater conditions and enabled derivation of the species sensitivity distribution (SSD) and sulfate haz…

Flotsam samples can help explain the δ13C and δ15N values of invertebrate resting stages in lake sediment

2018

Abstract The stable isotopic composition of chitinous remains of Cladocera (water fleas) and freshwater Bryozoa (moss animals) preserved in lake sediment records can provide supporting insights into past environmental and ecosystem changes in lakes. Here we explore whether analyses of these remains isolated from lake flotsam can provide information on the driving variables affecting the isotopic composition of these remains. We collected flotsam in 53 lakes and found enough material in 33 lakes to measure the stable carbon and nitrogen isotope ratios (expressed as δ13C and δ15N values, respectively) of resting stages. These values were compared with lake characteristics, water chemistry mea…

Flotsam samples can help explain the δ13C and δ15N values of invertebrate resting stages in lake sediment

2018

The stable isotopic composition of chitinous remains of Cladocera (water fleas) and freshwater Bryozoa (moss animals) preserved in lake sediment records can provide supporting insights into past environmental and ecosystem changes in lakes. Here we explore whether analyses of these remains isolated from lake flotsam can provide information on the driving variables affecting the isotopic composition of these remains. We collected flotsam in 53 lakes and found enough material in 33 lakes to measure the stable carbon and nitrogen isotope ratios (expressed as δ13C and δ15N values, respectively) of resting stages. These values were compared with lake characteristics, water chemistry measurements…

Service Provisioning and User Association for Heterogeneous Wireless Railway Networks

2017

In addition to comforting passengers' journey, the modern railway system is responsible to support a variety of on-board Internet services to meet the passenger's demands on seamless service provisioning. In order to provide wireless access to the train, one idea attracting increasing attention is to deploy a series of track-side access points (TAPs) with high-speed data rates along the rail lines dedicated to the broadband mobile service provisioning on board. Due to the heavy data traffic flushing into the base stations (BSs) of the cellular networks, TAPs act as a complement to the BSs in data delivery. In this paper, we focus on the TAP association problem for service provisioning in a …

Il Principe Fulvo di Salvatore Silvano Nigro

2012

On data mining applications in mobile networking and network security

2014

Hajautettujen keinotekoisten neuroverkkojen soveltaminen langattomien lähiverkkojen tunkeutumisen havaitsemisjärjestelmiin

2011

Langattomien lähiverkkojen yleistyminen tarjoaa mahdollisille tunkeutujille uusia reittejä tietojärjestelmiin. Samaan aikaan tietojärjestelmien merkitys ihmisten ja yhteiskunnan kannalta kasvaa koko ajan. Tietojärjestelmiä turvaamaan tarvitaan tunkeutumisyritykset havaitsevia järjestelmiä. Tietotekniikan arkipäiväistyessä tietojärjestelmien käyttö koskettaa yhä useampia ihmisiä, joten järjestelmien helppokäyttöisyys korostuu entisestään. Tutkimuksessa selvitettiin itseoppiviin hajautettuihin neuroverkkoihin perustuvan tunkeutumisen havaitsemisjärjestelmän toteutusmahdollisuuksia. Tutkimuksen tuloksena esitellään tällaisen järjestelmän arkkitehtuuri. Arkkitehtuurin perusteella toteutettiin e…