Zobrazeno 1 - 10
of 3 197
pro vyhledávání: '"P. Alexiou"'
Spatial division multiple access (SDMA), a powerful method routinely applied in multi-user multiple-input multiple-output (MIMO) communications, relies on the angular orthogonality of beams in the far field, to distinguish multiple users at different
Externí odkaz:
http://arxiv.org/abs/2408.13190
The design of Reconfigurable Intelligent Surfaces (RISs) is typically based on treating the RIS as an infinitely large surface that steers incident plane waves toward the desired direction. In practical implementations, however, the RIS has finite si
Externí odkaz:
http://arxiv.org/abs/2408.12205
Autor:
Sahabandu, Dinuka, Ramasubramanian, Bhaskar, Alexiou, Michail, Mertoguno, J. Sukarno, Bushnell, Linda, Poovendran, Radha
This paper introduces a novel reinforcement learning (RL) strategy designed to facilitate rapid autonomy transfer by utilizing pre-trained critic value functions from multiple environments. Unlike traditional methods that require extensive retraining
Externí odkaz:
http://arxiv.org/abs/2407.20466
Wireless communications are nowadays shifting to higher operation frequencies with the aim to meet the ever-increasing demand for bandwidth. While reconfigurable intelligent surfaces (RISs) are usually envisioned to restore the line-of-sight of block
Externí odkaz:
http://arxiv.org/abs/2312.01009
A computationally-simplified and descriptor-richer Point Cloud Quality Assessment (PCQA) metric, namely PointPCA+, is proposed in this paper, which is an extension of PointPCA. PointPCA proposed a set of perceptually-relevant descriptors based on PCA
Externí odkaz:
http://arxiv.org/abs/2311.13880
In this paper, we investigate the physical layer security capabilities of reconfigurable intelligent surface (RIS) empowered wireless systems. In more detail, we consider a general system model, in which the links between the transmitter (TX) and the
Externí odkaz:
http://arxiv.org/abs/2308.09906
Autor:
Adele Mazzoleni, Wireko Andrew Awuah, Vivek Sanker, Hareesha Rishab Bharadwaj, Nicholas Aderinto, Joecelyn Kirani Tan, Helen Ye Rim Huang, Jeisun Poornaselvan, Muhammad Hamza Shah, Oday Atallah, Aya Tawfik, Mohamed Elsayed Abdelmeguid Elsayed Elmanzalawi, Sama Hesham Ghozlan, Toufik Abdul-Rahman, Jeremiah Adepoju Moyondafoluwa, Athanasios Alexiou, Marios Papadakis
Publikováno v:
European Journal of Medical Research, Vol 29, Iss 1, Pp 1-17 (2024)
Abstract Chromosomal instability (CIN) is a pivotal factor in gliomas, contributing to their complexity, progression, and therapeutic challenges. CIN, characterized by frequent genomic alterations during mitosis, leads to genetic abnormalities and im
Externí odkaz:
https://doaj.org/article/eff363418b3044ef979f8e28482b739b
Publikováno v:
EURASIP Journal on Image and Video Processing, Vol 2024, Iss 1, Pp 1-27 (2024)
Abstract Point clouds denote a prominent solution for the representation of 3D photo-realistic content in immersive applications. Similarly to other imaging modalities, quality predictions for point cloud contents are vital for a wide range of applic
Externí odkaz:
https://doaj.org/article/fd064db3e5c142ffa02bdb6bc5d3c3c0
Publikováno v:
Contributions to Entomology, Vol 74, Iss 1, Pp 103-111 (2024)
We describe four new species of the genus Dolichopoda from various areas of Greece, namely D. athosensis sp. nov., D. dirussoi sp. nov., D. karoutsosi sp. nov. and D. kotsabasi sp. nov. New locality records for Greece for the genera Dolichopoda and T
Externí odkaz:
https://doaj.org/article/407cb5d31f76441c86a715690fcb8e1a
Autor:
Chunguang Liang, Silvia Spoerl, Yin Xiao, Katharina M. Habenicht, Sigrun S. Haeusl, Isabel Sandner, Julia Winkler, Nicholas Strieder, Rüdiger Eder, Hanna Stanewsky, Christoph Alexiou, Diana Dudziak, Andreas Rosenwald, Matthias Edinger, Michael Rehli, Petra Hoffmann, Thomas H. Winkler, Friederike Berberich-Siebelt
Publikováno v:
Communications Biology, Vol 7, Iss 1, Pp 1-16 (2024)
Abstract In clinical situations, peripheral blood accessible CD3+CD4+CXCR5+ T-follicular helper (TFH) cells may have to serve as a surrogate indicator for dysregulated germinal center responses in tissues. To determine the heterogeneity of TFH cells
Externí odkaz:
https://doaj.org/article/7c0d3bc23f4c4d5f842af48b76085e66