Sensors
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A Hybrid Spatio-Temporal Data Indexing Method for Trajectory Databases
Sensors - Tập 14 Số 7 - Trang 12990-13005
In recent years, there has been tremendous growth in the field of indoor and
outdoor positioning sensors continuously producing huge volumes of trajectory
data that has been used in many fields such as location-based services or
location intelligence. Trajectory data is massively increased and semantically
complicated, which poses a great challenge on spatio-temporal data indexing.
This paper prop...
Generation of Red-Shifted Cameleons for Imaging Ca2+ Dynamics of the Endoplasmic Reticulum
Sensors - Tập 15 Số 6 - Trang 13052-13068
Cameleons are sophisticated genetically encoded fluorescent probes that allow
quantifying cellular Ca2+ signals. The probes are based on Förster resonance
energy transfer (FRET) between terminally located fluorescent proteins (FPs),
which move together upon binding of Ca2+ to the central calmodulin myosin light
chain kinase M13 domain. Most of the available cameleons consist of cyan and
yellow FPs...
Sensor Clustering Using a K-Means Algorithm in Combination with Optimized Unmanned Aerial Vehicle Trajectory in Wireless Sensor Networks
Sensors - Tập 23 Số 4 - Trang 2345
We examine a general wireless sensor network (WSN) model which incorporates a
large number of sensors distributed over a large and complex geographical area.
The study proposes solutions for a flexible deployment, low cost and high
reliability in a wireless sensor network. To achieve these aims, we propose the
application of an unmanned aerial vehicle (UAV) as a flying relay to receive and
forward...
Application of Internet of Things and Sensors in Healthcare
Sensors - Tập 22 Số 15 - Trang 5738
The Internet of Things (IoT) is an innovative technology with billions of
sensors in various IoT applications. Important elements used in the IoT are
sensors that collect data for desired analyses. The IoT and sensors are very
important in smart cities, smart agriculture, smart education, healthcare
systems, and other applications. The healthcare system uses the IoT to meet
global health challenge...
In-Situ Monitoring and Diagnosing for Fused Filament Fabrication Process Based on Vibration Sensors
Sensors - Tập 19 Số 11 - Trang 2589
Fused filament fabrication (FFF) is one of the most widely used additive
manufacturing (AM) technologies and it has great potential in fabricating
prototypes with complex geometry. For high quality manufacturing, monitoring the
products in real time is as important as maintaining the FFF machine in the
normal state. This paper introduces an approach that is based on the vibration
sensors and data-...
Filament Advance Detection Sensor for Fused Deposition Modelling 3D Printers
Sensors - Tập 18 Số 5 - Trang 1495
The main purpose of this paper is to present a system to detect extrusion
failures in fused deposition modelling (FDM) 3D printers by sensing that the
filament is moving forward properly. After several years using these kind of
machines, authors detected that there is not any system to detect the main
problem in FDM machines. Authors thought in different sensors and used the
weighted objectives me...
Layer Contour Verification in Additive Manufacturing by Means of Commercial Flatbed Scanners
Sensors - Tập 20 Số 1 - Trang 1
Industrial adoption of additive manufacturing (AM) processes demands improvement
in the geometrical accuracy of manufactured parts. One key achievement would be
to ensure that manufactured layer contours match the correspondent theoretical
profiles, which would require integration of on-machine measurement devices
capable of digitizing individual layers. Flatbed scanners should be considered
as se...
Filament Breakage Monitoring in Fused Deposition Modeling Using Acoustic Emission Technique
Sensors - Tập 18 Số 3 - Trang 749
Polymers are being used in a wide range of Additive Manufacturing (AM)
applications and have been shown to have tremendous potential for producing
complex, individually customized parts. In order to improve part quality, it is
essential to identify and monitor the process malfunctions of polymer-based AM.
The present work endeavored to develop an alternative method for filament
breakage identifica...
A Versatile Electronic Tongue Based on Surface Plasmon Resonance Imaging and Cross-Reactive Sensor Arrays—A Mini-Review
Sensors - Tập 17 Số 5 - Trang 1046
Nowadays, there is a strong demand for the development of new analytical devices
with novel performances to improve the quality of our daily lives. In this
context, multisensor systems such as electronic tongues (eTs) have emerged as
promising alternatives. Recently, we have developed a new versatile eT system by
coupling surface plasmon resonance imaging (SPRi) with cross-reactive sensor
arrays. ...
A Lossless Multichannel Bio-Signal Compression Based on Low-Complexity Joint Coding Scheme for Portable Medical Devices
Sensors - Tập 14 Số 9 - Trang 17516-17529
Research on real-time health systems have received great attention during recent
years and the needs of high-quality personal multichannel medical signal
compression for personal medical product applications are increasing. The
international MPEG-4 audio lossless coding (ALS) standard supports a joint
channel-coding scheme for improving compression performance of multichannel
signals and it is ver...
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