Results 41 to 50 of about 9,518 (289)

Call Blocking Probabilities under a Probabilistic Bandwidth Reservation Policy in Mobile Hotspots

Telecom, 2021
In this paper we study a mobility-aware call admission control algorithm in a mobile hotspot. To this end, a vehicle is considered which has an access point with a fixed capacity. The vehicle alternates between stop and moving phases. When the vehicle is
Irene P. Keramidi, Ioannis D. Moscholios, Panagiotis G. Sarigiannidis   +2 more
doaj   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

A Handoff Algorithm of Dynamic Decisions with Extenics for Wireless Cellular Networks

Journal of Electrical and Computer Engineering, 2010
A traditional handoff algorithm always adopts stationary channel preservation schemes that cause the increase of call blocking probability (CBP) and the decrease of system utilization to reduce the call dropping probability (CDP) for handoff call.
Chen-Feng Wu
doaj   +1 more source

Call blocking probabilities in a two‐link multirate loss system for Poisson traffic

IET Networks, 2018
The authors propose two multirate teletraffic loss models in a two‐link system that accommodates Poisson arriving calls from different service‐classes with different bandwidth‐per‐call requirements. Each link has two thresholds which refer to the number of in‐service calls in the link.
Stefanos G. Sagkriotis, Spyros K. Pantelis, Ioannis D. Moscholios, Vassilios G. Vassilakis   +3 more
openaire   +2 more sources

Role of Intrinsic Electron Trapping in Negative Charging of Amorphous Alumina

Advanced Functional Materials, EarlyView.
Intrinsic electron trapping in amorphous Al2O3 is examined using hybrid‐DFT models spanning a wide density range. Both spontaneous and thermally activated trapping are identified, with pronounced spontaneous localization in dense, partly crystallized structures.
Jack W. Strand, Kaja H. Hiorth, David Gao, Valeri Afanas'ev, Jaakko Akola, Alexander L. Shluger   +5 more
wiley   +1 more source

Research of service-differentiated admission control based on Markov decision processes in heterogeneous wireless networks

Tongxin xuebao, 2010
Service-differentiated admission control was studied in heterogeneous wireless networks.Capacity regions of voice and data services in CDMA cellular network and WLAN were derived.A theoretical model of admission control with differentiated services was ...
DENG Qiang1, CHEN Shan-zhi2, HU Bo1, SHI Yan1   +3 more
doaj   +2 more sources

CAC DPLB MCN: A Distributed Load Balancing Scheme in Multimedia Mobile Cellular Networks

Foundations of Computing and Decision Sciences, 2016
The problem of non-uniform traffic demand in different cells of a cellular network may lead to a gross imbalance in the system performance. Thus, the users in hot cells may suffer from low throughput. In this paper, an effective and simple load balancing
Sharma Abhijit, Shah Arvind, Chatterjee Monish, Bhattacharya Uma   +3 more
doaj   +1 more source

A probabilistic threshold-based bandwidth sharing policy for wireless multirate loss networks [PDF]

, 2016
We propose a probabilistic bandwidth sharing policy, based on the threshold (TH) policy, for a single cell of fixed capacity in a homogeneous wireless cellular network. The cell accommodates random input-traffic originated from $K$ service-classes.
Moscholios, Ioannis, Vasilakis, Vasileios, Logothetis, Michael, Vassilakis, Vassilios, Boucouvalas, Anthony   +4 more
core   +1 more source