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Simultaneous 2D pressure and 2D velocity information at the rough water-sediment interface of streambeds were gained by a newly developed measurement setup. In the bed the pressure fluctuations decay exponentially within the first 1-2 equivalent sand roughnesses. Structural findings concerning coherent flow structures are consistent with models originally developed for smooth walls. A significant bed destabilizing flow-pressure pattern was identified for the first time.

open channel flow --- pressure sensors --- coherent structures --- gravel bed --- PIV

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A smart city is a modern technology-driven urban area which uses sensing devices, information, and communication technology connected to the internet of things (IoTs) for the optimum and efficient utilization of infrastructures and services with the goal of improving the living conditions of citizens. Increasing populations, lower budgets, limited resources, and compatibility of the upgraded technologies are some of the few problems affecting the implementation of smart cities. Hence, there is continuous advancement regarding technologies for the implementation of smart cities. The aim of this Special Issue is to report on the design and development of integrated/smart sensors, a universal interfacing platform, along with the IoT framework, extending it to next-generation communication networks for monitoring parameters of interest with the goal of achieving smart cities. The proposed universal interfacing platform with the IoT framework will solve many challenging issues and significantly boost the growth of IoT-related applications, not just in the environmental monitoring domain but in the other key areas, such as smart home, assistive technology for the elderly care, smart city with smart waste management, smart E-metering, smart water supply, intelligent traffic control, smart grid, remote healthcare applications, etc., signifying benefits for all countries.

n/a --- data mining algorithms --- pressure sensors --- proactive content delivery --- Elman neural network --- cockroaches --- capacitive sensor --- renewable energy --- indoor comfort --- impedance measurement --- Internet of things (IoT) --- context awareness --- redundant capacity --- city behavior --- secondary traffic --- SDN --- ontology --- bi-reflector solar PV system (BRPVS) --- air quality --- ontology development --- assistive living --- sol-gel technique --- decision support system --- ambient assisted living --- LCC converter --- insect surveillance --- sensitivity --- wireless sensor node (WSN) --- unpowered --- load balancing --- wireless sensor network --- dynamic range --- solar --- anomaly detection --- location-based social networks --- real-time assessment --- porous alumina --- IoT --- building integrated photovoltaics (BIPV) --- carbon nanotubes --- six-port structure --- domestic environment reconfiguration --- half bridge --- smart mat --- cloud computing --- differentiated services --- reflection-based --- nanocomposite sensor --- ppm --- chemical sensors --- sensor systems and applications --- tensile testing --- WSN --- smart traps --- ontology-based application --- hotel room comfort

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Carbon-based nanomaterials have been increasingly used in sensors and biosensors design due to their advantageous intrinsic properties, which include, but are not limited to, high electrical and thermal conductivity, chemical stability, optical properties, large specific surface, biocompatibility, and easy functionalization. The most commonly applied carbonaceous nanomaterials are carbon nanotubes (single- or multi-walled nanotubes) and graphene, but promising data have been also reported for (bio)sensors based on carbon quantum dots and nanocomposites, among others. The incorporation of carbon-based nanomaterials, independent of the detection scheme and developed platform type (optical, chemical, and biological, etc.), has a major beneficial effect on the (bio)sensor sensitivity, specificity, and overall performance. As a consequence, carbon-based nanomaterials have been promoting a revolution in the field of (bio)sensors with the development of increasingly sensitive devices. This Special Issue presents original research data and review articles that focus on (experimental or theoretical) advances, challenges, and outlooks concerning the preparation, characterization, and application of carbon-based nanomaterials for (bio)sensor development.

Technology: general issues --- dopamine --- uric acid --- MnO2 nanoflowers --- N-doped reduced graphene oxide --- voltammetric sensor --- 3D printing --- biomimetic sensor --- flexible electronics --- graphene --- PDMS --- gauge factor --- carbon nanofibers --- nanoparticles --- electrospinning --- hybrid nanomaterials --- sensor --- carbon dots --- dipicolinic acid --- Tb3+ --- schizochytrium --- ratiometric fluorescence nanoprobe --- carbon-based nanomaterials --- chemo- and biosensor --- food safety --- field effect transistor --- graphene nanoribbon --- propane --- butane --- gas sensor --- detector --- oxygen --- humidity --- water --- nitrogen --- carbon dioxide --- surface-enhanced Raman scattering --- ultrathin gold films --- spectroscopic ellipsometry --- percolation threshold --- nano carbon black --- polydimethylsiloxane --- pressure sensors --- wearable electronics --- hemoglobin determination --- luminescence --- room temperature phosphorescence --- portable instrumentation --- sensors and biosensors --- carbon nanomaterials --- environment --- aquatic fauna --- waters --- carbon nanotubes --- zirconia nanoparticles --- Prussian blue --- electrochemical sensors --- metal organic framework --- active carbon --- heavy metal --- low-cost adsorbents --- lead sensor --- Cortaderia selloana --- non-covalent --- biosensor --- real-time --- nanocomposite --- π-π stacking --- drop-cast --- carbon-surfaces --- resistor --- GFET --- n/a

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This Special Issue shows a range of potential opportunities for the application of wearable movement sensors in motor rehabilitation. However, the papers surely do not cover the whole field of physical behavior monitoring in motor rehabilitation. Most studies in this Special Issue focused on the technical validation of wearable sensors and the development of algorithms. Clinical validation studies, studies applying wearable sensors for the monitoring of physical behavior in daily life conditions, and papers about the implementation of wearable sensors in motor rehabilitation are under-represented in this Special Issue. Studies investigating the usability and feasibility of wearable movement sensors in clinical populations were lacking. We encourage researchers to investigate the usability, acceptance, feasibility, reliability, and clinical validity of wearable sensors in clinical populations to facilitate the application of wearable movement sensors in motor rehabilitation.

accelerometers --- wearable sensors --- exercise --- measurement --- GMFCS level --- relative orientation estimation --- IMU --- magnetometer-free --- gait analysis --- machine learning --- inertial measurement units --- neurological disorders --- falls --- validity --- 3-D motion analysis --- single leg squat --- motion capture --- clinical --- rehabilitation --- motor function --- outcomes --- implementation --- locomotion --- assistive devices --- embedded sensors --- accelerometry --- physical activity --- Fourier transform --- functional linear model --- walking distance --- lower limb amputation --- gait --- Lie group --- constrained extended Kalman filter --- pose estimation --- wearable devices --- distance measurement --- gait planning --- stride length --- center of pressure --- human–machine interaction --- perinatal stroke --- kinematics --- upper extremity --- cerebral palsy --- hemiplegia --- constraint --- inertial measurement unit --- wireless sensors network --- motion tracking --- range of motion --- shoulder --- goniometer --- spinal cord injury --- tetraplegia --- clinical setting --- circadian motor behavior --- body-worn sensors --- older adults --- physically active workers --- low back pain --- inertial motion units --- wearable sensor --- real-time gait detection --- insole pressure sensors --- pathological gait --- gait rehabilitation --- assistive device --- wearable technology --- stroke --- physical therapy --- arm use --- upper limb performance --- accelerometer --- sensor --- walking --- n/a --- human-machine interaction

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Carbon-based nanomaterials have been increasingly used in sensors and biosensors design due to their advantageous intrinsic properties, which include, but are not limited to, high electrical and thermal conductivity, chemical stability, optical properties, large specific surface, biocompatibility, and easy functionalization. The most commonly applied carbonaceous nanomaterials are carbon nanotubes (single- or multi-walled nanotubes) and graphene, but promising data have been also reported for (bio)sensors based on carbon quantum dots and nanocomposites, among others. The incorporation of carbon-based nanomaterials, independent of the detection scheme and developed platform type (optical, chemical, and biological, etc.), has a major beneficial effect on the (bio)sensor sensitivity, specificity, and overall performance. As a consequence, carbon-based nanomaterials have been promoting a revolution in the field of (bio)sensors with the development of increasingly sensitive devices. This Special Issue presents original research data and review articles that focus on (experimental or theoretical) advances, challenges, and outlooks concerning the preparation, characterization, and application of carbon-based nanomaterials for (bio)sensor development.

Technology: general issues --- dopamine --- uric acid --- MnO2 nanoflowers --- N-doped reduced graphene oxide --- voltammetric sensor --- 3D printing --- biomimetic sensor --- flexible electronics --- graphene --- PDMS --- gauge factor --- carbon nanofibers --- nanoparticles --- electrospinning --- hybrid nanomaterials --- sensor --- carbon dots --- dipicolinic acid --- Tb3+ --- schizochytrium --- ratiometric fluorescence nanoprobe --- carbon-based nanomaterials --- chemo- and biosensor --- food safety --- field effect transistor --- graphene nanoribbon --- propane --- butane --- gas sensor --- detector --- oxygen --- humidity --- water --- nitrogen --- carbon dioxide --- surface-enhanced Raman scattering --- ultrathin gold films --- spectroscopic ellipsometry --- percolation threshold --- nano carbon black --- polydimethylsiloxane --- pressure sensors --- wearable electronics --- hemoglobin determination --- luminescence --- room temperature phosphorescence --- portable instrumentation --- sensors and biosensors --- carbon nanomaterials --- environment --- aquatic fauna --- waters --- carbon nanotubes --- zirconia nanoparticles --- Prussian blue --- electrochemical sensors --- metal organic framework --- active carbon --- heavy metal --- low-cost adsorbents --- lead sensor --- Cortaderia selloana --- non-covalent --- biosensor --- real-time --- nanocomposite --- π-π stacking --- drop-cast --- carbon-surfaces --- resistor --- GFET