Results 91 to 100 of about 128,513 (359)

An Innovative Recompression Scheme for VQ Index Tables

Future Internet
As we move into the digital era, the pace of technological advancement is accelerating rapidly. Network traffic often becomes congested during the transmission of large data volumes.
Yijie Lin, Jui-Chuan Liu, Ching-Chun Chang, Chin-Chen Chang   +3 more
doaj   +1 more source

Data, not documents: Moving beyond theories of information‐seeking behavior to advance data discovery

Journal of the Association for Information Science and Technology, Volume 76, Issue 4, Page 649-664, April 2025.
Abstract Many theories of human information behavior (HIB) assume that information objects are in text document format. This paper argues four important HIB theories are insufficient for describing users' search strategies for data because of assumptions about the attributes of objects that users seek.
Anthony J. Million, Jeremy York, Sara Lafia, Libby Hemphill   +3 more
wiley   +1 more source

Development of a Qualitative Data Analysis Codebook for Arterial Hypertension and Type-2-Diabetes Integrated Care Evaluation

International Journal of Integrated Care
Introduction: Non-communicable diseases, such as arterial hypertension (HTN) and type-2 diabetes (T2D), pose a global public health problem. Integrated care with focus on person-centred principles aims to enhance healthcare quality and access.
Črt Zavrnik, Nataša Stojnić, Majda Mori Lukančič, Monika Martens, Katrien Danhieux, Savina Chham, Matic Mihevc, Tina Virtič Potočnik, Zalika Klemenc Ketiš, Josefien van Olmen, Antonija Poplas Susič   +10 more
doaj   +1 more source

Convolutional neural network and clustering-based codebook design method for massive MIMO systems

EURASIP Journal on Advances in Signal Processing, 2022
In this paper, we propose a convolutional neural network (CNN) and clustering-based codebook design method. Specifically, we train two different CNNs, i.e., CNN1 and CNN2, to compress the channel state information (CSI) matrices into the channel vectors ...
Jing Xing, Die Hu
doaj   +1 more source

Hierarchical Codebook Design for Beamforming Training in Millimeter-Wave Communication [PDF]

IEEE Transactions on Wireless Communications, 2015
In millimeter-wave communication, large antenna arrays are required to achieve high power gain by steering toward each other with narrow beams, which poses the problem to efficiently search the best beam direction in the angle domain at both Tx and Rx ...
Zhenyu Xiao, Tong He, Pengfei Xia, X. Xia   +3 more
semanticscholar   +1 more source

Essential work, invisible workers: The role of digital curation in COVID‐19 Open Science

Journal of the Association for Information Science and Technology, Volume 76, Issue 4, Page 703-717, April 2025.
Abstract In this paper, we examine the role digital curation practices and practitioners played in facilitating open science (OS) initiatives amid the COVID‐19 pandemic. In Summer 2023, we conducted a content analysis of available information regarding 50 OS initiatives that emerged—or substantially shifted their focus—between 2020 and 2022 to address ...
Irene V. Pasquetto, Amina A. Abdu, Natascha Chtena   +2 more
wiley   +1 more source

Low Complexity and Robust Codebook-Based Analog Beamforming for Millimeter Wave MIMO Systems

IEEE Access, 2017
Millimeter-wave (mm-Wave) MIMO systems have been proposed to achieve higher spectral efficiency via the hybrid beamforming structure, which consists of analog beamforming and digital beamforming.
Yong Niu, Ziqi Feng, Min Chen, Yong Li, Zhangdui Zhong, Bo Ai   +5 more
doaj   +1 more source

The Necessity of Relay Selection

, 2010
We determine necessary conditions on the structure of symbol error rate (SER) optimal quantizers for limited feedback beamforming in wireless networks with one transmitter-receiver pair and R parallel amplify-and-forward relays.
Jafarkhani, Hamid, Koyuncu, Erdem
core   +1 more source

“You're this person who's providing light”: Embodied responses to information loss and transition within LGBTQIA+ communities

Journal of the Association for Information Science and Technology, EarlyView.
Abstract This paper reports on findings from 15 semi‐structured interviews with LGBTQIA+ individuals within the United States who have experienced the loss of one or more LGBTQIA+ information spaces. The paper specifically focuses on how such losses occurred and the information transitions experienced by the participants in response to this loss ...
Travis L. Wagner, Vanessa L. Kitzie
wiley   +1 more source

CODEBOOK ENHANCEMENT FOR VECTOR QUANTIZATION USING MINMAX VALUES FOR IMAGE COMPRESSION [PDF]

ICTACT Journal on Image and Video Processing, 2013
Vector Quantization (VQ) is one of the Lossy Image Compression Techniques. Vector Quantization comprises of three different phases: Codebook Generation, Image Encoding and Image Decoding. The efficiency of VQ depends on the quality of the codebook.
S. Vimala
doaj