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Sensors, Volume 20, Issue 14

July-2 2020 - 255 articles

Cover Story: Following the significant improvement in their properties during the last decade, distributed fiber optics sensing (DFOs) techniques are nowadays implemented for industrial use in the context of structural health monitoring (SHM). While these techniques have formed an undeniable asset for the health monitoring of concrete structures, their performance should be validated for novel structural materials, including ultra-high performance fiber reinforced cementitious composites (UHPFRC). In this study, a full-scale UHPFRC beam was instrumented with DFOs, digital image correlation (DIC) and extensometers. A method for the detection and measurement of opening and closing localized fictitious cracks in UHPFRC is verified. The use of the correct combination of DFO sensors allows the precise detection of microcracks, as well as the monitoring of fictitious cracks’ opening. View this paper
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Articles (255)

  • Article
  • Open Access
200 Citations
20,006 Views
22 Pages

Technologies Trend towards 5G Network for Smart Health-Care Using IoT: A Review

  • Abdul Ahad,
  • Mohammad Tahir,
  • Muhammad Aman Sheikh,
  • Kazi Istiaque Ahmed,
  • Amna Mughees and
  • Abdullah Numani

21 July 2020

Smart health-care is undergoing rapid transformation from the conventional specialist and hospital-focused style to a distributed patient-focused manner. Several technological developments have encouraged this rapid revolution of health-care vertical...

  • Perspective
  • Open Access
13 Citations
7,183 Views
19 Pages

Why Not Glycine Electrochemical Biosensors?

  • Clara Pérez-Ràfols,
  • Yujie Liu,
  • Qianyu Wang,
  • María Cuartero and
  • Gastón A. Crespo

21 July 2020

Glycine monitoring is gaining importance as a biomarker in clinical analysis due to its involvement in multiple physiological functions, which results in glycine being one of the most analyzed biomolecules for diagnostics. This growing demand require...

  • Article
  • Open Access
60 Citations
8,766 Views
17 Pages

FedMed: A Federated Learning Framework for Language Modeling

  • Xing Wu,
  • Zhaowang Liang and
  • Jianjia Wang

21 July 2020

Federated learning (FL) is a privacy-preserving technique for training a vast amount of decentralized data and making inferences on mobile devices. As a typical language modeling problem, mobile keyboard prediction aims at suggesting a probable next...

  • Review
  • Open Access
234 Citations
42,855 Views
65 Pages

21 July 2020

The coupling of waves between the piezoelectric generators, detectors, and propagating media is challenging due to mismatch in the acoustic properties. The mismatch leads to the reverberation of waves within the transducer, heating, low signal-to-noi...

  • Article
  • Open Access
8 Citations
3,683 Views
16 Pages

21 July 2020

Cytochrome P450 reductase (CPR) abstracts electrons from Nicotinamide adenine dinucleotide phosphate H (NADPH), transferring them to an active Cytochrome P450 (CYP) site to provide a functional CYP. In the present study, a yeast strain was geneticall...

  • Article
  • Open Access
12 Citations
6,163 Views
19 Pages

Multiangle Long-Axis Lateral Illumination Photoacoustic Imaging Using Linear Array Transducer

  • João H. Uliana,
  • Diego R. T. Sampaio,
  • Guilherme S. P. Fernandes,
  • María S. Brassesco,
  • Marcello H. Nogueira-Barbosa,
  • Antonio A. O. Carneiro and
  • Theo Z. Pavan

21 July 2020

Photoacoustic imaging (PAI) combines optical contrast with ultrasound spatial resolution and can be obtained up to a depth of a few centimeters. Hand-held PAI systems using linear array usually operate in reflection mode using a dark-field illuminati...

  • Article
  • Open Access
10 Citations
4,189 Views
33 Pages

Collision-Free Transmissions in an IoT Monitoring Application Based on LoRaWAN

  • Rahim Haiahem,
  • Pascale Minet,
  • Selma Boumerdassi and
  • Leila Azouz Saidane

21 July 2020

With the Internet of Things (IoT), the number of monitoring applications deployed is considerably increasing, whatever the field considered: smart city, smart agriculture, environment monitoring, air pollution monitoring, to name a few. The LoRaWAN (...

  • Article
  • Open Access
45 Citations
5,216 Views
16 Pages

Estimation of Soil Arsenic Content with Hyperspectral Remote Sensing

  • Lifei Wei,
  • Haochen Pu,
  • Zhengxiang Wang,
  • Ziran Yuan,
  • Xinru Yan and
  • Liqin Cao

21 July 2020

With the continuous application of arsenic-containing chemicals, arsenic pollution in soil has become a serious problem worldwide. The detection of arsenic pollution in soil is of great significance to the protection and restoration of soil. Hyperspe...

  • Review
  • Open Access
89 Citations
16,291 Views
36 Pages

Micromachined Accelerometers with Sub-µg/√Hz Noise Floor: A Review

  • Chen Wang,
  • Fang Chen,
  • Yuan Wang,
  • Sina Sadeghpour,
  • Chenxi Wang,
  • Mathieu Baijot,
  • Rui Esteves,
  • Chun Zhao,
  • Jian Bai and
  • Huafeng Liu
  • + 1 author

21 July 2020

This paper reviews the research and development of micromachined accelerometers with a noise floor lower than 1 µg/√Hz. Firstly, the basic working principle of micromachined accelerometers is introduced. Then, different methods of reducin...

  • Article
  • Open Access
23 Citations
5,447 Views
21 Pages

Research on Identification Method of Wear Degradation of External Gear Pump Based on Flow Field Analysis

  • Rui Guo,
  • Yongtao Li,
  • Yue Shi,
  • Hucheng Li,
  • Jingyi Zhao and
  • Dianrong Gao

21 July 2020

As a kind of hydraulic power component, the external gear pump determines the performance of the entire hydraulic system. The degradation state of gear pumps can be monitored by sensors. Based on the accelerated life test (ALT), this paper proposes a...

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Sensors - ISSN 1424-8220