Sensors, Vol. 24, Pages 2574: A Sensor-Based Upper Limb Treatment in Hemiplegic Patients: Results from a Randomized Pilot Study
This study aims to evaluate the feasibility of using the Gloreha Aria (R-Lead), a sensor-based upper limb in-hospital rehabilitation, compared with conventional physiotherapist-led training in subacute hemiplegic patients. Twenty-one patients were recruited and randomised 1:1 to a sensor-based group (treatment group TG) or a conventional group (control group, CG). All patients performed 30 sessions of 30 min each of dedicated upper limb rehabilitation. The Fugl–Meyer Assessment for Upper Extremity (FMA-UE) was the primary evaluation., both as a motor score and as individual items. Secondary evaluations were F...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Fabio Vanoglio Laura Comini Marta Gaiani Gian Pietro Bonometti Alberto Luisa Palmira Bernocchi Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2573: Cluster-Based Pairwise Contrastive Loss for Noise-Robust Speech Recognition
Kim
This paper addresses a joint training approach applied to a pipeline comprising speech enhancement (SE) and automatic speech recognition (ASR) models, where an acoustic tokenizer is included in the pipeline to leverage the linguistic information from the ASR model to the SE model. The acoustic tokenizer takes the outputs of the ASR encoder and provides a pseudo-label through K-means clustering. To transfer the linguistic information, represented by pseudo-labels, from the acoustic tokenizer to the SE model, a cluster-based pairwise contrastive (CBPC) loss function is proposed, which is a self-supervised contrastive...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Geon Woo Lee Hong Kook Kim Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2575: Fault Diagnosis for Reducers Based on a Digital Twin
i Zheng
A new method based on a digital twin is proposed for fault diagnosis, in order to compensate for the shortcomings of the existing methods for fault diagnosis modeling, including the single fault type, low similarity, and poor visual effect of state monitoring. First, a fault diagnosis test platform is established to analyze faults under constant and variable speed conditions. Then, the obtained data are integrated into the Unity3D platform to realize online diagnosis and updated with real-time working status data. Finally, an industrial test of the digital twin model is conducted, allowing for its comparison wi...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Weimin Liu Bin Han Aiyun Zheng Zhi Zheng Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2576: A Single-Longitudinal-Mode S + C Band Wavelength-Tunable Fiber Laser
ang
An external cavity wavelength-fiber ring laser (ECWTFL) based on a semiconductor optical amplifier and a combined wavelength scanning filter in the Littrow configuration is proposed and experimentally demonstrated. With the benefit of the combination of an external cavity wavelength filter and a Lyot filter, the laser achieves a single-mode narrow linewidth output with a linewidth of 1.75 kHz. The wavelength tuning range reaches 133 nm, covering the entire S + C band. The proposed ECWTFL is used for demodulation of a fiber EFPI sensor; the result shows that the proposed ECWTFL has the ability to demodulate the smal...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Da Liu Yi Jiang Tags: Communication Source Type: research
Sensors, Vol. 24, Pages 2577: Comparison of Metabolic Power and Energy Cost of Submaximal and Sprint Running Efforts Using Different Methods in Elite Youth Soccer Players: A Novel Energetic Approach
This study compared different calculation methods for the metabolic power (MP) and energy cost (EC) of sprinting using global positioning system (GPS) metrics and electromyography (EMG), with the aim of identifying potential differences in performance markers. Sixteen elite U17 male soccer players (age: 16.4 ± 0.5 years; body mass: 64.6 ± 4.4 kg; and height: 177.4 ± 4.3 cm) participated in the study and completed four different submaximal constant running efforts followed by sprinting actions while using portable GPS-IMU units and surface EMG. GPS-derived MP was determined based...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Gabriele Grassadonia Pedro E. Alcaraz Tom ás T. Freitas Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2560: Large Span Sizes and Irregular Shapes Target Detection Methods Using Variable Convolution-Improved YOLOv8
ng Chen
In this work, an object detection method using variable convolution-improved YOLOv8 is proposed to solve the problem of low accuracy and low efficiency in detecting spanning and irregularly shaped samples. Aiming at the problems of the irregular shape of a target, the low resolution of labeling frames, dense distribution, and the ease of overlap, a deformable convolution module is added to the original backbone network. This allows the model to deal flexibly with the problem of the insufficient perceptual field of the target corresponding to the detection point, and the situations of leakage and misdetection ca...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Yan Gao Wei Liu Hsiang-Chen Chui Xiaoming Chen Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2561: 3D DAS VSP for Coal Seam Exploration: A Case Study from Queensland, Australia
This study trialled effective strategies for deploying cables into boreholes and demonstrated how this technology could be incorporated into the standard coal exploration process. The final processing results produced a high-resolution 3D seismic cube where the coal seams below the basalt cover are clearly identifiable around the boreholes. Permanent installation of the fibre-optic cables into a set of boreholes provides immediate benefits of 3D seismic imaging and can create additional value in utilising these sensors for further discrete or continuous subsurface measurements, including stability monitoring of underground...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Konstantin Tertyshnikov Alexey Yurikov Andrej Bona Milovan Urosevic Roman Pevzner Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2564: Study of the Prediction of Vibrations in Soft Soil Foundations Based on Field Tests
Zhang
To explore the prediction of vibrations in soft soil foundations, in light of the construction of laboratories with microvibration requirements on soft soil foundations which are subject to the limitations of urban land planning, field testing was conducted, and the soil surface vibration responses were recorded at different distances from a road under various highway traffic loads. By analyzing the data which summarize the characteristics of soft soil foundations, it is clarified that the vibration response of soft soil foundations mainly occurs at low frequencies, and the vibration response under road traffic l...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Jiaxin Lin Nan Zhang Yunshi Zhang Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2562: Non-Intrusive Load Identification Based on Retrainable Siamese Network
Miao Yu
Non-intrusive load monitoring (NILM) can identify each electrical load and its operating state in a household by using the voltage and current data measured at a single point on the bus, thereby behaving as a key technology for smart grid construction and effective energy consumption. The existing NILM methods mainly focus on the identification of pre-trained loads, which can achieve high identification accuracy and satisfying outcomes. However, unknown load identification is rarely involved among those methods and the scalability of NILM is still a crucial problem at the current stage. In light of this, we hav...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Lingxia Lu Ju-Song Kang Fanju Meng Miao Yu Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2563: Fractional-Order Electrical Modeling of Aluminum Coated via Plasma Electro-Oxidation and Thermal Spray Methods to Optimize Radiofrequency Medical Devices
ía
Active medical devices rely on a source of energy that is applied to the human body for specific purposes such as electrosurgery, ultrasounds for breaking up kidney stones (lithotripsy), laser irradiation, and other medical techniques and procedures that are extensively used. These systems must provide adequate working power with a commitment not to produce side effects on patients. Therefore, the materials used in these devices must effectively transmit energy, allow for security control, sense real-time variations in case of any issues, and ensure the implementation of closed-loop systems for control. This work e...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Noelia Vaquero-Gallardo Oliver Mill án-Blasco Herminio Mart ínez-García Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2566: Enhancing Pure Inertial Navigation Accuracy through a Redundant High-Precision Accelerometer-Based Method Utilizing Neural Networks
This study introduces a novel device-level redundant inertial navigation framework using high-precision accelerometers combined with a neural network-based method to refine navigation accuracy. Experimental validation confirms that this integration significantly boosts navigational precision, outperforming conventional system-level redundancy approaches. The proposed method utilizes the advanced capabilities of high-precision accelerometers and deep learning to achieve superior predictive accuracy and error reduction. This research paves the way for the future integration of cutting-edge technologies like high-precision op...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Qinyuan He Huapeng Yu Dalei Liang Xiaozhuo Yang Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2565: Influence of the Degree of Fruitiness on the Quality Assessment of Virgin Olive Oils Using Electronic Nose Technology
ínez
The electronic nose is a non-invasive technology suitable for the analysis of edible oils. One of the practical applications in the olive oil industry is the classification of virgin oils based on their sensory characteristics. Notwithstanding that this technology, at this stage, cannot realistically replace the currently used methods, it is fruitful for a preliminary analysis of the oil quality. This work makes use of this technology to develop a methodology for the detection of the threshold by which an extra-virgin olive oil (EVOO) drops into the virgin olive oil (VOO) category. With this aim, two features wer...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Javiera P. Navarro Soto Sergio Illana Rico Diego M. Mart ínez Gila Silvia Satorres Mart ínez Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2567: Adopting Graph Neural Networks to Analyze Human & ndash;Object Interactions for Inferring Activities of Daily Living
Sensors, Vol. 24, Pages 2567: Adopting Graph Neural Networks to Analyze Human–Object Interactions for Inferring Activities of Daily Living
Sensors doi: 10.3390/s24082567
Authors:
Peng Su
Dejiu Chen
Human Activity Recognition (HAR) refers to a field that aims to identify human activities by adopting multiple techniques. In this field, different applications, such as smart homes and assistive robots, are introduced to support individuals in their Activities of Daily Living (ADL) by analyzing data collected from various sensors. Apart from wearable sensors, the adoption of camera frames to analyze and clas...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: Peng Su Dejiu Chen Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2569: Comprehensive Analysis of Xiaomi Mi 8 GNSS Antenna Performance
nez
The interest in precise point positioning techniques using smartphones increased with the launch of the world’s first dual-frequency L1/L5 GNSS smartphone, Xiaomi Mi 8. The smartphone GNSS antenna is low-cost, sensitive to multipath, and limited by physical space and design. The main purpose of this work is to determine the mechanical location and antenna performance in terms of radiation pattern in an anechoic chamber using a Vector Network Analyzer (VNA) and robotic positioning platform by varying the elevation and azimuth angles between the transmitter and smartphone GNSS antennas; the power recei...
Source: Sensors - April 17, 2024 Category: Biotechnology Authors: M ónica Zabala Haro Ángel Martín Furones Ana Anquela Juli án Mar ía Jesús Jiménez-Martínez Tags: Article Source Type: research
Sensors, Vol. 24, Pages 2546: An Era of Digital Healthcare & mdash;A Comprehensive Review of Sensor Technologies and Telehealth Advancements in Chronic Heart Failure Management
Sensors, Vol. 24, Pages 2546: An Era of Digital Healthcare—A Comprehensive Review of Sensor Technologies and Telehealth Advancements in Chronic Heart Failure Management
Sensors doi: 10.3390/s24082546
Authors:
Tejaswini Manavi
Haroon Zafar
Faisal Sharif
Heart failure (HF) is a multi-faceted, complex clinical syndrome characterized by significant morbidity, high mortality rate, reduced quality of life, and rapidly increasing healthcare costs. A larger proportion of these costs comprise both ambulatory and emergency department visits, as well as hospital admissions. Despite the methods used by telehealth...
Source: Sensors - April 16, 2024 Category: Biotechnology Authors: Tejaswini Manavi Haroon Zafar Faisal Sharif Tags: Review Source Type: research
