Results 21 to 30 of about 3,092,636 (291)
An Efficient Codebook Design for Uplink SCMA
IEEE Access, 2020 Sparse code multiple access (SCMA) is one of the most intensively investigated non-orthogonal multiple access (NOMA) techniques for the fifth generation communication (5G) system. In this paper, a new multi-stage optimization approach for codebook design
Mengyao Gao +3 more
doaj +1 more source
Information, 2022 Intent classification and named entity recognition of medical questions are two key subtasks of the natural language understanding module in the question answering system.
Turdi Tohti +2 more
doaj +1 more source
Spreadsheet signal detection [PDF]
Behavior Research Methods, Instruments, & Computers, 1999 A number of studies in perception, attention, and memory employ signal detection theory (SDT) to assess the accuracy of an observer's detection or discrimination performance. Some of the problems that students have with understanding and using SDT are associated with the calculations needed to obtain SDT parameters and predictions.
openaire +2 more sources
Signal detection with spectrum windows
Heliyon, 2022 Spectrum sensing is needed in frequency agile cognitive radio systems, cognitive radar systems as well as in (cognitive) electronic warfare systems. This paper studies window based detectors where window shapes can be matched for the expected spectrum.
Saarnisaari Harri, Vartiainen Johanna
openaire +4 more sources
New Journal of Physics, 2023 Herein, a multiple bulging black phosphorus (BP)-based metasurface is proposed for studying its reflection responses and sensing performances through the finite-difference time-domain simulation method. It is shown that, the reflection dips are caused by
Nengxun Yang +9 more
doaj +1 more source
Use AF-CNN for End-to-End Fiber Vibration Signal Recognition
IEEE Access, 2021 Traditional optical fiber vibration signal (OFVS) recognition research focuses on signal endpoint detection and feature extraction. These two aspects directly determine the success of OFVS recognition.
Saisai Ruan +5 more
doaj +1 more source
Optimal Strategies for Sinusoidal Signal Detection [PDF]
, 2002 We derive and study optimal and nearly-optimal strategies for the detection of sinusoidal signals hidden in additive (Gaussian and non-Gaussian) noise. Such strategies are an essential part of algorithms for the detection of the gravitational Continuous ...
A. Abramovici +9 more
core +3 more sources
“Utilizing” Signal Detection Theory [PDF]
Psychological Science, 2014 What do inferring what a person is thinking or feeling, judging a defendant’s guilt, and navigating a dimly lit room have in common? They involve perceptual uncertainty (e.g., a scowling face might indicate anger or concentration, for which different responses are appropriate) and behavioral risk (e.g., a cost to making the wrong response).
Spencer K, Lynn, Lisa Feldman, Barrett
openaire +2 more sources
Object Detection Based on YOLOv5 and GhostNet for Orchard Pests
Information, 2022 Real-time detection and identification of orchard pests is related to the economy of the orchard industry. Using lab picture collections and pictures from web crawling, a dataset of common pests in orchards has been created.
Yitao Zhang +4 more
doaj +1 more source
Investigation into Recognition Technology of Helmet Wearing Based on HBSYOLOX-s
Applied Sciences, 2022 This work proposes a new approach based on YOLOX model enhancement for the helmet-wearing real-time detection task, which is plagued by low detection accuracy, incorrect detection, and missing detection.
Teng Gao, Xianwu Zhang
doaj +1 more source