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Sensors, Volume 24, Issue 7

April-1 2024 - 362 articles

Cover Story: Recent advancements in wearable tech and neuroimaging devices utilizing photoplethysmography have demonstrated the feasibility of pulse rate variability analysis. Several studies have revealed a minor discrepancy in pulse rate variability compared to heart rate variability derived concurrently; however, these studies did not consider the influence of sampling rate where the majority of photoplethysmography devices sample between 20 and 100 Hz. In a study with 54 participants, cardiac activity was recorded using electrocardiography and photoplethysmography at three sites (two cerebral and one peripheral). The findings suggest that ~40–100 Hz is needed for accurate pulse rate variability estimates, with a mild parasympathetic bias in pulse rate variability compared to heart rate variability parameters. View this paper
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Articles (362)

  • Article
  • Open Access
3 Citations
1,621 Views
17 Pages

Research on Combined Localization Algorithm Based on Active Screening–Kalman Filtering

  • Xiao Zhang,
  • Yuting Fu,
  • Jie Li,
  • Yandong Wei,
  • Yu Li and
  • Lu Zheng

8 April 2024

Real-time acquisition of location information for agricultural robotic systems is a prerequisite for achieving high-precision intelligent navigation. This paper proposes a data filtering and combined positioning method, and establishes an active scre...

  • Article
  • Open Access
8 Citations
2,742 Views
25 Pages

Next Generation Computing and Communication Hub for First Responders in Smart Cities

  • Olha Shaposhnyk,
  • Kenneth Lai,
  • Gregor Wolbring,
  • Vlad Shmerko and
  • Svetlana Yanushkevich

8 April 2024

This paper contributes to the development of a Next Generation First Responder (NGFR) communication platform with the key goal of embedding it into a smart city technology infrastructure. The framework of this approach is a concept known as SmartHub,...

  • Article
  • Open Access
1,836 Views
26 Pages

8 April 2024

Clock synchronization is one of the popular research topics in Distributed Measurement and Control Systems (DMCSs). In most industrial fields, such as Smart Grid and Flight Test, the highest requirement for synchronization accuracy is 1 μs. IEEE 1...

  • Article
  • Open Access
7 Citations
2,163 Views
12 Pages

MSK-TIM: A Telerobotic Ultrasound System for Assessing the Musculoskeletal System

  • Zachary Ochitwa,
  • Reza Fotouhi,
  • Scott J. Adams,
  • Adriana Paola Noguera Cundar and
  • Haron Obaid

8 April 2024

The aim of this paper is to investigate technological advancements made to a robotic tele-ultrasound system for musculoskeletal imaging, the MSK-TIM (Musculoskeletal Telerobotic Imaging Machine). The hardware was enhanced with a force feedback sensor...

  • Article
  • Open Access
2 Citations
2,891 Views
24 Pages

Assessing the Cloud-RAN in the Linux Kernel: Sharing Computing and Network Resources

  • Andres F. Ocampo,
  • Mah-Rukh Fida,
  • Ahmed Elmokashfi and
  • Haakon Bryhni

8 April 2024

Cloud-based Radio Access Network (Cloud-RAN) leverages virtualization to enable the coexistence of multiple virtual Base Band Units (vBBUs) with collocated workloads on a single edge computer, aiming for economic and operational efficiency. However,...

  • Article
  • Open Access
11 Citations
2,530 Views
19 Pages

Magnetic Flux Sensor Based on Spiking Neurons with Josephson Junctions

  • Timur Karimov,
  • Valerii Ostrovskii,
  • Vyacheslav Rybin,
  • Olga Druzhina,
  • Georgii Kolev and
  • Denis Butusov

8 April 2024

Josephson junctions (JJs) are superconductor-based devices used to build highly sensitive magnetic flux sensors called superconducting quantum interference devices (SQUIDs). These sensors may vary in design, being the radio frequency (RF) SQUID, dire...

  • Article
  • Open Access
4 Citations
2,348 Views
15 Pages

Using Computer Vision to Annotate Video-Recoded Direct Observation of Physical Behavior

  • Sarah K. Keadle,
  • Skylar Eglowski,
  • Katie Ylarregui,
  • Scott J. Strath,
  • Julian Martinez,
  • Alex Dekhtyar and
  • Vadim Kagan

8 April 2024

Direct observation is a ground-truth measure for physical behavior, but the high cost limits widespread use. The purpose of this study was to develop and test machine learning methods to recognize aspects of physical behavior and location from videos...

  • Article
  • Open Access
2 Citations
3,289 Views
19 Pages

Wi-CHAR: A WiFi Sensing Approach with Focus on Both Scenes and Restricted Data

  • Zhanjun Hao,
  • Kaikai Han,
  • Zinan Zhang and
  • Xiaochao Dang

8 April 2024

Significant strides have been made in the field of WiFi-based human activity recognition, yet recent wireless sensing methodologies still grapple with the reliance on copious amounts of data. When assessed in unfamiliar domains, the majority of model...

  • Communication
  • Open Access
2 Citations
1,710 Views
10 Pages

8 April 2024

A force plate is mainly used in biomechanics; it aims to measure the ground reaction force in a person’s walking or standing position. In this study, a large-area force mat of the piezoresistance sensing type was developed, and a deep-learning-...

  • Article
  • Open Access
16 Citations
3,785 Views
23 Pages

8 April 2024

Accurately identifying adulterants in agriculture and food products is associated with preventing food safety and commercial fraud activities. However, a rapid, accurate, and robust prediction model for adulteration detection is hard to achieve in pr...

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Sensors - ISSN 1424-8220