Search results for "Erk"

Energy Efficient Optimization for Wireless Virtualized Small Cell Networks With Large-Scale Multiple Antenna

2017

Wireless network virtualization is envisioned as a promising framework to provide efficient and customized services for next-generation wireless networks. In wireless virtualized networks (WVNs), limited radio resources are shared among different services providers for providing services to different users with heterogeneous demands. In this paper, we propose a resource allocation scheme for an orthogonal frequency division multiplexing-based WVN, where one small cell base station equipped with a large number of antennas serves the users with different service requirements. In particular, with the objective to obtain the energy efficiency in the uplink, a joint power, subcarrier, and antenn…

Implementing a lecture feedback system using semi-ad-hoc wireless networks

2007

Service-Oriented Wireless Virtualized Networks: An Intelligent Resource Management Approach

2022

Trajectory Design and Resource Allocation for Multi-UAV Networks : Deep Reinforcement Learning Approaches

2023

The future mobile communication system is expected to provide ubiquitous connectivity and unprecedented services over billions of devices. The unmanned aerial vehicle (UAV), which is prominent in its flexibility and low cost, emerges as a significant network entity to realize such ambitious targets. In this work, novel machine learning-based trajectory design and resource allocation schemes are presented for a multi-UAV communications system. In the considered system, the UAVs act as aerial Base Stations (BSs) and provide ubiquitous coverage. In particular, with the objective to maximize the system utility over all served users, a joint user association, power allocation and trajectory desi…

Sustainable Supercapacitors Based on Polypyrrole-Doped Activated Biochar from Wood Waste Electrodes

2023

The synthesis of high-performance carbon-based materials from biomass residues for electrodes has been considered a challenge to achieve in supercapacitor-based production. In this work, activated biochar has been prepared as the active electrode material for supercapacitors (SCs), and an effective method has been explored to boost its capacitive performance by employing polypyrrole (PPy) as a biochar dopant. The results for physicochemical characterization data have demonstrated that PPy doping affects the biochar morphology, specific surface area, pore structure, and incorporation of surface functionalities on modified biochar. Biochar-PPy exhibited a surface area of 87 m2 g−1, while pris…

Listening to and Living With Networked Media During a Pandemic

2021

This article explores mediated listening from the perspective of intimacy during the first weeks of the coronavirus pandemic. The theoretical frame builds on the literature on listening and presence in mediated environments, audience engagement, and intimacy as meaningful connections. Methodologically, the study is connective ethnography, and the data was collected by collaborative autoethnography. Our data show that listening was an individual sensemaking strategy of the outside world and a means to form connectedness. Threading between different screens on digital platforms caused the collapse of public and private contexts, and through these, particular types of intimacy arose. When the …

Arjen askareet : vanhempien ja lasten yhteiselle tekemiselle antamat merkitykset

2004

Kielelliset strategiat lasten yhteisöllisyyden ilmaisijoina

2002

Intangible capital in the name-giving and godparent networks

2022

Razrabotka èffektivnogo distancionnogo kursa russkogo âzyka

2011

Nyky-yhteiskunnassa koulutus ja kouluttautuminen eivät rajoitu vain oppilaitoksissa tapahtuvaan opiskeluun, vaan elinikäisen oppimisen periaatteiden mukaisesti yhä useammat haluavat opiskella itselleen sopivana aikana ja sopivassa paikassa omien tarpeiden ja kiinnostuksen mukaan. Kiinnostus etäopiskeluun kasvaa ja sen merkitys lisääntyy varsinkin nopeasti kehittyvän tieto- ja viestintäteknologian myötä. Etäopiskelussa keskeyttämisprosentti on kuitenkin suurempi kuin tavanomaisessa opiskelussa. Opiskelu ilman opettajan tai muiden opiskelijoiden fyysistä läsnäoloa voi rasittaa. Affektiivisten vaikeuksien lisäksi etäopiskelija voi kärsiä myös kognitiivisesta ylikuormituksesta: hänen täytyy sam…