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Source: Sensors

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Total 2011 results found since Jan 2013.

Sensors, Vol. 23, Pages 3618: Towards Home-Based Diabetic Foot Ulcer Monitoring: A Systematic Review
Ceponis It is considered that 1 in 10 adults worldwide have diabetes. Diabetic foot ulcers are some of the most common complications of diabetes, and they are associated with a high risk of lower-limb amputation and, as a result, reduced life expectancy. Timely detection and periodic ulcer monitoring can considerably decrease amputation rates. Recent research has demonstrated that computer vision can be used to identify foot ulcers and perform non-contact telemetry by using ulcer and tissue area segmentation. However, the applications are limited to controlled lighting conditions, and expert knowledge is required for d...
Source: Sensors - March 30, 2023 Category: Biotechnology Authors: Arturas Kairys Renata Pauliukiene Vidas Raudonis Jonas Ceponis Tags: Review Source Type: research

Sensors, Vol. 23, Pages 3550: Maximizing Heterogeneous Server Utilization with Limited Availability Times for Divisible Loads Scheduling on Networked Systems
i Zhang Most of the available divisible-load scheduling models assume that all servers in networked systems are idle before workloads arrive and that they can remain available online during workload computation. In fact, this assumption is not always valid. Different servers on networked systems may have heterogenous available times. If we ignore the availability constraints when dividing and distributing workloads among servers, some servers may not be able to start processing their assigned load fractions or deliver them on time. In view of this, we propose a new multi-installment scheduling model based on server ava...
Source: Sensors - March 28, 2023 Category: Biotechnology Authors: Xiaoli Wang Bharadwaj Veeravalli Xiaobo Song Kaiqi Zhang Tags: Article Source Type: research

Sensors, Vol. 23, Pages 3549: An Asynchronous Collision-Tolerant ACRDA Scheme Based on Satellite-Selection Collaboration-Beamforming for LEO Satellite IoT Networks
xin Zhang In this paper, an asynchronous collision-tolerant ACRDA scheme based on satellite-selection collaboration-beamforming (SC-ACRDA) is proposed to solve the avalanche effect caused by packet collision under random access (RA) high load in the low earth orbit (LEO) satellite Internet of Things (IoT) networks. A non-convex optimization problem is formulated to realize the satellite selection problem in multi-satellite collaboration-beamforming. To solve this problem, we employ the Charnes-Cooper transformation to transform a convex optimization problem. In addition, an iterative binary search algorithm is also des...
Source: Sensors - March 28, 2023 Category: Biotechnology Authors: Tao Hong Rui Liu Ziwei Liu Xiaojin Ding Gengxin Zhang Tags: Article Source Type: research

Sensors, Vol. 23, Pages 3532: Navigation with Polytopes: A Toolbox for Optimal Path Planning with Polytope Maps and B-spline Curves
ris Ernst To deal with the problem of optimal path planning in 2D space, this paper introduces a new toolbox named “Navigation with Polytopes” and explains the algorithms behind it. The toolbox allows one to create a polytopic map from a standard grid map, search for an optimal corridor, and plan a safe B-spline reference path used for mobile robot navigation. Specifically, the B-spline path is converted into its equivalent Bézier representation via a novel calculation method in order to reduce the conservativeness of the constrained path planning problem. The conversion can h...
Source: Sensors - March 28, 2023 Category: Biotechnology Authors: Ngoc Thinh Nguyen Pranav Tej Gangavarapu Niklas Fin Kompe Georg Schildbach Floris Ernst Tags: Article Source Type: research

Sensors, Vol. 23, Pages 3526: Molecularly Imprinted Nanoparticle Ensembles for Rapidly Identifying S. epidermidis
r A. Lieberzeit Staphylococcus epidermidis (S. epidermidis) belongs to methicillin-resistant bacteria strains that cause severe disease in humans. Herein, molecularly imprinted polymer (MIP) nanoparticles resulting from solid-phase synthesis on entire cells were employed as a sensing material to identify the species. MIP nanoparticles revealed spherical shapes with diameters of approximately 70 nm to 200 nm in scanning electron microscopy (SEM), which atomic force microscopy (AFM) confirmed. The interaction between nanoparticles and bacteria was assessed using height image analysis in AFM. Selective binding between MIP...
Source: Sensors - March 28, 2023 Category: Biotechnology Authors: Chularat Hlaoperm Wisnu Arfian A. Sudjarwo Jakob Ehrenbrandtner Endre Kiss Giorgia Del Favero Kiattawee Choowongkomon Jatuporn Rattanasrisomporn Peter A. Lieberzeit Tags: Article Source Type: research

Sensors, Vol. 23, Pages 3508: High-Performance Detection of Exosomes Based on Synergistic Amplification of Amino-Functionalized Fe3O4 Nanoparticles and Two-Dimensional MXene Nanosheets
nfei Dong Li Li Exosomes derived from cancer cells have been recognized as a promising biomarker for minimally invasive liquid biopsy. Herein, a novel sandwich-type biosensor was fabricated for highly sensitive detection of exosomes. Amino-functionalized Fe3O4 nanoparticles were synthesized as a sensing interface with a large surface area and rapid enrichment capacity, while two-dimensional MXene nanosheets were used as signal amplifiers with excellent electrical properties. Specifically, CD63 aptamer attached Fe3O4 nanoprobes capture the target exosomes. MXene nanosheets modified with epithelial cell adhesion molecu...
Source: Sensors - March 27, 2023 Category: Biotechnology Authors: Linlin Zhuang Qiannan You Xue Su Zhimin Chang Mingfeng Ge Qian Mei Li Yang Wenfei Dong Li Li Tags: Article Source Type: research

Sensors, Vol. 23, Pages 3512: PRM-D* Method for Mobile Robot Path Planning
In this study, we use the idea of hierarchical planning to improve the dynamic obstacle avoidance performance of PRM by introducing D* into the network construction and planning process of PRM. To demonstrate the feasibility of the proposed method, we conducted simulation experiments using the proposed PRM-D*(probabilistic roadmap method and D*) method for maps of different complexity and compared the results with those obtained by classical methods such as SPARS2(improving sparse roadmap spanners). The experiments demonstrate that our method is non-optimal in terms of path length but second only to graph search methods; i...
Source: Sensors - March 27, 2023 Category: Biotechnology Authors: Chunyang Liu Saibao Xie Xin Sui Yan Huang Xiqiang Ma Nan Guo Fang Yang Tags: Article Source Type: research

Sensors, Vol. 23, Pages 3471: Towards the Use of Individual Fluorescent Nanoparticles as Ratiometric Sensors: Spectral Robustness of Ultrabright Nanoporous Silica Nanoparticles
kolov Here we address an important roadblock that prevents the use of bright fluorescent nanoparticles as individual ratiometric sensors: the possible variation of fluorescence spectra between individual nanoparticles. Ratiometric measurements using florescent dyes have shown their utility in measuring the spatial distribution of temperature, acidity, and concentration of various ions. However, the dyes have a serious limitation in their use as sensors; namely, their fluorescent spectra can change due to interactions with the surrounding dye. Encapsulation of the d, e in a porous material can solve this issue. Recently...
Source: Sensors - March 26, 2023 Category: Biotechnology Authors: Mahshid Iraniparast Berney Peng Igor Sokolov Tags: Article Source Type: research

Sensors, Vol. 23, Pages 3455: & ldquo;Grafting-To & rdquo; Covalent Binding of Plasmonic Nanoparticles onto Silica WGM Microresonators: Mechanically Robust Single-Molecule Sensors and Determination of Activation Energies from Single-Particle Events
Sensors, Vol. 23, Pages 3455: “Grafting-To” Covalent Binding of Plasmonic Nanoparticles onto Silica WGM Microresonators: Mechanically Robust Single-Molecule Sensors and Determination of Activation Energies from Single-Particle Events Sensors doi: 10.3390/s23073455 Authors: Mariana P. Serrano Sivaraman Subramanian Catalina von Bilderling Matías Rafti Frank Vollmer We hereby present a novel “grafting-to”-like approach for the covalent attachment of plasmonic nanoparticles (PNPs) onto whispering gallery mode (WGM) silica microresonators. Mechanically stable opto...
Source: Sensors - March 25, 2023 Category: Biotechnology Authors: Mariana P. Serrano Sivaraman Subramanian Catalina von Bilderling Mat ías Rafti Frank Vollmer Tags: Article Source Type: research

Sensors, Vol. 23, Pages 3425: Ethanol and NaCl-Induced Gold Nanoparticle Aggregation Toxicity toward DNA Investigated with a DNA/GCE Biosensor
vá Engineered nanomaterials are becoming increasingly common in commercial and consumer products and pose a serious toxicological threat. Exposure of human organisms to nanomaterials can occur by inhalation, oral intake, or dermal transport. Together with the consumption of alcohol in the physiological environment of the body containing NaCl, this has raised concerns about the potentially harmful effects of ingested nanomaterials on human health. Although gold nanoparticles (AuNPs) exhibit great potential for various biomedical applications, there is some inconsistency in the case of the unambiguous genotoxicity of Au...
Source: Sensors - March 24, 2023 Category: Biotechnology Authors: Jana Bla škovičová Vlastimil Vysko čil Michal August ín Andrea Purde šová Tags: Article Source Type: research

Sensors, Vol. 23, Pages 3426: Instrumented Timed Up and Go Test (iTUG) & mdash;More Than Assessing Time to Predict Falls: A Systematic Review
Sensors, Vol. 23, Pages 3426: Instrumented Timed Up and Go Test (iTUG)—More Than Assessing Time to Predict Falls: A Systematic Review Sensors doi: 10.3390/s23073426 Authors: Paulina Ortega-Bastidas Britam Gómez Pablo Aqueveque Soledad Luarte-Martínez Roberto Cano-de-la-Cuerda The Timed Up and Go (TUG) test is a widely used tool for assessing the risk of falls in older adults. However, to increase the test’s predictive value, the instrumented Timed Up and Go (iTUG) test has been developed, incorporating different technological approaches. This systematic review aims to explore the e...
Source: Sensors - March 24, 2023 Category: Biotechnology Authors: Paulina Ortega-Bastidas Britam G ómez Pablo Aqueveque Soledad Luarte-Mart ínez Roberto Cano-de-la-Cuerda Tags: Systematic Review Source Type: research

Sensors, Vol. 23, Pages 3397: Accuracy of Intracranial Pressure Monitoring & mdash;Single Centre Observational Study and Literature Review
This study utilises illustrative clinical and laboratory material from 1200 TBI patients (collected from 1992 to 2019) to present several important points regarding the accuracy of in vivo implementation of contemporary ICP transducers. In addition, a thorough literature search was performed, with sources dating from 1960 to 2021. Sources considered to be relevant matched the keywords: “intraparenchymal ICP sensors”, “fiberoptic ICP sensors”, “piezoelectric strain gauge sensors”, “external ventricular drains”, &a...
Source: Sensors - March 23, 2023 Category: Biotechnology Authors: Adam I. Pelah Agnieszka Zakrzewska Leanne A. Calviello Teodoro Forcht Dagi Zofia Czosnyka Marek Czosnyka Tags: Review Source Type: research

Sensors, Vol. 23, Pages 3396: Mobile App Interventions for Parkinson & rsquo;s Disease, Multiple Sclerosis and Stroke: A Systematic Literature Review
Sensors, Vol. 23, Pages 3396: Mobile App Interventions for Parkinson’s Disease, Multiple Sclerosis and Stroke: A Systematic Literature Review Sensors doi: 10.3390/s23073396 Authors: Andreas Triantafyllidis Sofia Segkouli Stelios Zygouris Christina Michailidou Konstantinos Avgerinakis Evangelia Fappa Sophia Vassiliades Anastasia Bougea Nikos Papagiannakis Ioannis Katakis Evangelos Mathioudis Alexandru Sorici Lidia Bajenaru Valentina Tageo Francesco Camonita Christoniki Magga-Nteve Stefanos Vrochidis Ludovico Pedullà Giampaolo Brichetto Panagiotis Tsakanikas Konstantinos...
Source: Sensors - March 23, 2023 Category: Biotechnology Authors: Andreas Triantafyllidis Sofia Segkouli Stelios Zygouris Christina Michailidou Konstantinos Avgerinakis Evangelia Fappa Sophia Vassiliades Anastasia Bougea Nikos Papagiannakis Ioannis Katakis Evangelos Mathioudis Alexandru Sorici Lidia Bajenaru Valentina T Tags: Review Source Type: research

Sensors, Vol. 23, Pages 3384: Unsupervised Video Summarization Based on Deep Reinforcement Learning with Interpolation
We present a lightweight video summarization network with transformer and CNN networks to capture the global and local contexts to efficiently predict the keyframe-level importance score of the video in a short length. The output importance score of the network was interpolated to fit the video length. Using the predicted importance score, we calculated the reward based on the reward functions, which helped select interesting keyframes efficiently and uniformly. We evaluated the proposed method on two datasets, SumMe and TVSum. The experimental results illustrate that the proposed method showed a state-of-the-art performan...
Source: Sensors - March 23, 2023 Category: Biotechnology Authors: Ui Nyoung Yoon Myung Duk Hong Geun-Sik Jo Tags: Article Source Type: research

Sensors, Vol. 23, Pages 3337: Optimized Weight Low-Frequency Search Coil Magnetometer for Ground & ndash;Airborne Frequency Domain Electromagnetic Method
Sensors, Vol. 23, Pages 3337: Optimized Weight Low-Frequency Search Coil Magnetometer for Ground–Airborne Frequency Domain Electromagnetic Method Sensors doi: 10.3390/s23063337 Authors: Fei Teng Ye Tong Bofeng Zou The vertical component magnetic field signal in the ground–airborne frequency domain electromagnetic (GAFDEM) method is detected by the air coil sensor, which is parallel to the ground. Unfortunately, the air coil sensor has low sensitivity in the low-frequency band, making it challenging to detect effective low-frequency signals and causing low accuracy and large error for int...
Source: Sensors - March 22, 2023 Category: Biotechnology Authors: Fei Teng Ye Tong Bofeng Zou Tags: Communication Source Type: research