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  • alicious UAV Detection Using Integrated Audio and Visual Features for Public Safety Applications
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Sonain Jamil; Fawad; MuhibUr Rahman; Amin Ullah; Salman Badnava; Masoud Forsat; Seyed Sajad Mirjavadi

    Unmanned aerial vehicles (UAVs) have become popular in surveillance, security, and remote monitoring. However, they also pose serious security threats to public privacy. The timely detection of a malicious drone is currently an open research issue for security provisioning companies. Recently, the problem has been addressed by a plethora of schemes. However, each plan has a limitation, such as extreme

    更新日期:2020-07-15
  • olysaccharides as the Sensing Material for Metal Ion Detection-Based Optical Sensor Applications
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Nur Hidayah Azeman; Norhana Arsad; Ahmad Ashrif A Bakar

    The incorporation of a proper sensing material towards the construction of high selectivity optical sensing devices is vital. Polysaccharides, such as chitosan and carrageenan, are among the bio-based sensing materials that are extensively employed due to their remarkable physicochemical attributes. This paper highlights the critical aspects of the design of suitable polysaccharides for the recognition

    更新日期:2020-07-15
  • ntegrated LTE and Millimeter-Wave 5G MIMO Antenna System for 4G/5G Wireless Terminals
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Syeda Iffat Naqvi; Niamat Hussain; Amjad Iqbal; MuhibUr Rahman; Masoud Forsat; Seyed Sajad Mirjavadi; Yasar Amin

    This work demonstrates an integrated multiple-input multiple-output (MIMO) antenna solution for Long Term Evolution (LTE) and Millimeter-Wave (mm-wave) 5G wireless communication services. The proposed structure is comprised of a two-element LTE MIMO antenna, and a four-element 5G MIMO configuration with rectangular and circular defects in the ground plane. For experimental validation, the proposed

    更新日期:2020-07-15
  • A Critical Review
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Jae Sang Heo; Md Faruk Hossain; Insoo Kim

    To demonstrate the wearable flexible/stretchable health-monitoring sensor, it is necessary to develop advanced functional materials and fabrication technologies. Among the various developed materials and fabrication processes for wearable sensors, carbon-based materials and textile-based configurations are considered as promising approaches due to their outstanding characteristics such as high conductivity

    更新日期:2020-07-15
  • A Decentralized IoT Solution for Vehicles Communication Using Ethereum
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Rateb Jabbar; Mohamed Kharbeche; Khalifa Al-Khalifa; Moez Krichen; Kamel Barkaoui

    The concept of smart cities has become prominent in modern metropolises due to the emergence of embedded and connected smart devices, systems, and technologies. They have enabled the connection of every “thing” to the Internet. Therefore, in the upcoming era of the Internet of Things, the Internet of Vehicles (IoV) will play a crucial role in newly developed smart cities. The IoV has the potential

    更新日期:2020-07-15
  • acrodiversity Reception with Distributed Hard-Decision Receivers for Maritime Wireless Sensor Networks
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Weigang Chen; Dongming Sun; Changcai Han; Jinsheng Yang; Feng Gong; Wei Wang

    Maritime wireless sensor networks are considered to be the primary means of monitoring methods in the marine environment. The transmission between sensor node and sink node in maritime wireless sensor networks is usually unreliable due to the harsh propagation environment. To extend the transmission range or to enhance the transmission reliability between sensor nodes and sink node, we propose a macrodiversity

    更新日期:2020-07-15
  • odeling and Piezoelectric Analysis of Nano Energy Harvesters
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Muhammad Faisal Wasim; Shahzadi Tayyaba; Muhammad Waseem Ashraf; Zubair Ahmad

    The expedient way for the development of microelectromechanical systems (MEMS) based devices are based on two key steps. First, perform the simulation for the optimization of various parameters by using different simulation tools that lead to cost reduction. Second, develop the devices with accurate fabrication steps using optimized parameters. Here, authors have performed a piezoelectric analysis

    更新日期:2020-07-15
  • nhancing the Sensing Performance of Zigzag Graphene Nanoribbon to Detect NO, NO2, and NH3 Gases
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Ehab Salih; Ahmad I. Ayesh

    In this article, a zigzag graphene nanoribbon (ZGNR)-based sensor was built utilizing the Atomistic ToolKit Virtual NanoLab (ATK-VNL), and used to detect nitric oxide (NO), nitrogen dioxide (NO2), and ammonia (NH3). The successful adsorption of these gases on the surface of the ZGNR was investigated using adsorption energy (Eads), adsorption distance (D), charge transfer (∆Q), density of states (DOS)

    更新日期:2020-07-15
  • An Indoor Navigation Framework for Mobile Devices
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Yael Landau; Boaz Ben-Moshe

    This paper presents a vision-based navigation system designed for indoor localization. The suggested framework works as a standalone 3 D positioning system by fusing a sophisticated optical-flow pedometry with map constrains using an advanced particle filter. The presented method requires no personal calibration and works on standard smartphones with relatively low energy consumption. Field experiments

    更新日期:2020-07-15
  • Proposal for Designing User Interfaces for All Based on Kinect Sensor
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Marta Sylvia Del Rio Guerra; Jorge Martin-Gutierrez

    The ever-growing and widespread use of touch, face, full-body, and 3D mid-air gesture recognition sensors in domestic and industrial settings is serving to highlight whether interactive gestures are sufficiently inclusive, and whether or not they can be executed by all users. The purpose of this study was to analyze full-body gestures from the point of view of user experience using the Microsoft Kinect

    更新日期:2020-07-15
  • ndoor Large-Scale MIMO-Based RSSI Localization with Low-Complexity RFID Infrastructure
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Mohammed El-Absi; Feng Zheng; Ashraf Abuelhaija; Ali Al-haj Abbas; Klaus Solbach; Thomas Kaiser

    Indoor localization based on unsynchronized, low-complexity, passive radio frequency identification (RFID) using the received signal strength indicator (RSSI) has a wide potential for a variety of internet of things (IoTs) applications due to their energy-harvesting capabilities and low complexity. However, conventional RSSI-based algorithms present inaccurate ranging, especially in indoor environments

    更新日期:2020-07-15
  • ierarchical Anomaly Detection Model for In-Vehicle Networks Using Machine Learning Algorithms
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Seunghyun Park; Jin-Young Choi

    The communication and connectivity functions of vehicles increase their vulnerability to hackers. The unintended failure and malfunction of in-vehicle systems caused by external factors threaten the security and safety of passengers. As the controller area network alone cannot protect vehicles from external attacks, techniques to analyze and detect external attacks are required. Therefore, we propose

    更新日期:2020-07-15
  • Review of Technologies and Techniques for Indoor Navigation Systems for the Visually Impaired
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Walter C. S. S. Simões; Guido S. Machado; André M. A. Sales; Mateus M. de Lucena; Nasser Jazdi; Vicente F. de Lucena

    Technologies and techniques of location and navigation are advancing, allowing greater precision in locating people in complex and challenging conditions. These advances have attracted growing interest from the scientific community in using indoor positioning systems (IPSs) with a higher degree of precision and fast delivery time, for groups of people such as the visually impaired, to some extent improving

    更新日期:2020-07-15
  • redictive Modeling of a Leaf Conceptual Midpoint Quasi-Color (CMQ) Using an Artificial Neural Network
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Ivan Simko

    The color of plant leaves is moderated by the content of pigments, which can show considerable dorsiventral distribution. Two typical examples are leafy vegetables and ornamentals, wherein red and green color surfaces can be seen on the same leaf. The proof of concept is provided for predictive modeling of a leaf conceptual mid-point quasi-color (CMQ) from the content of pigments. The CMQ idea is based

    更新日期:2020-07-15
  • n Intelligent and Low-Cost Eye-Tracking System for Motorized Wheelchair Control
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Mahmoud Dahmani; Muhammad E. H. Chowdhury; Amith Khandakar; Tawsifur Rahman; Khaled Al-Jayyousi; Abdalla Hefny; Serkan Kiranyaz

    In the 34 developed and 156 developing countries, there are ~132 million disabled people who need a wheelchair, constituting 1.86% of the world population. Moreover, there are millions of people suffering from diseases related to motor disabilities, which cause inability to produce controlled movement in any of the limbs or even head. This paper proposes a system to aid people with motor disabilities

    更新日期:2020-07-15
  • A Systematic Review
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Heleen M. Essink; Armelle Knops; Amber M.A. Liqui Lung; C. Nienke van der Meulen; Nino L. Wouters; Aart J. van der Molen; Wouter J.H. Veldkamp; M. Frank Termaat

    In the critical setting of a trauma team activation, team composition is crucial information that should be accessible at a glance. This calls for a technological solution, which are widely available, that allows access to the whereabouts of personnel. This diversity presents decision makers and users with many choices and considerations. The aim of this review is to give a comprehensive overview of

    更新日期:2020-07-15
  • imulation and Experiment for Growth of High-Quality and Large-Size AlN Seed Crystals by Spontaneous Nucleation
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Zuoyan Qin; Wenhao Chen; Danxia Deng; Zhenhua Sun; Baikui Li; Ruisheng Zheng; Honglei Wu

    Seed crystals are the prerequisite for the growth of high quality and large size aluminum nitride (AlN) single crystal boules. The physical vapor transport (PVT) method is adopted to grow AlN seed crystal. However, this method is not available in nature. Herein, the temperature field distribution in the PVT furnace was simulated using the numerical analysis method to obtain free-standing and large-size

    更新日期:2020-07-15
  • uantum Diffie–Hellman Extended to Dynamic Quantum Group Key Agreement for e-Healthcare Multi-Agent Systems in Smart Cities
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Vankamamidi S. Naresh; Moustafa M. Nasralla; Sivaranjani Reddi; Iván García-Magariño

    Multi-Agent Systems can support e-Healthcare applications for improving quality of life of citizens. In this direction, we propose a healthcare system architecture named smart healthcare city. First, we divide a given city into various zones and then we propose a zonal level three-layered system architecture. Further, for effectiveness we introduce a Multi-Agent System (MAS) in this three-layered architecture

    更新日期:2020-07-15
  • Grey Model and Mixture Gaussian Residual Analysis-Based Position Estimator in an Indoor Environment
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Yan Wang; Wenjia Ren; Long Cheng; Jijun Zou

    As the progress of electronics and information processing technology continues, indoor localization has become a research hotspot in wireless sensor networks (WSN). The adverse non-line of sight (NLOS) propagation usually causes large measurement errors in complex indoor environments. It could decrease the localization accuracy seriously. A traditional grey model considers the motion characteristics

    更新日期:2020-07-15
  • stimating the Effects of Awareness on Neck-Muscle Loading in Frontal Impacts with EMG and MC Sensors
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Simon Krašna; Srđan Đorđević

    Critical traffic situations, such as vehicle collisions and emergency manoeuvres, can cause an occupant to respond with reflex and voluntary actions. These affect the occupant’s position and dynamic loading during interactions with the vehicle’s restraints, possibly compromising their protective function. Electromyography (EMG) is a commonly used method for measuring active muscle response and can

    更新日期:2020-07-15
  • omparison between the Airgo™ Device and a Metabolic Cart during Rest and Exercise
    Sensors (IF 3.275) Pub Date : 2020-07-15
    Andrea Antonelli; Dario Guilizzoni; Alessandra Angelucci; Giulio Melloni; Federico Mazza; Alessia Stanzi; Massimiliano Venturino; David Kuller; Andrea Aliverti

    The aim of this study is to compare the accuracy of Airgo™, a non-invasive wearable device that records breath, with respect to a gold standard. In 21 healthy subjects (10 males, 11 females), four parameters were recorded for four min at rest and in different positions simultaneously by Airgo™ and SensorMedics 2900 metabolic cart. Then, a cardio-pulmonary exercise test was performed using the Erg 800S

    更新日期:2020-07-15
  • A Case-Study of Aerial Scene Classification
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Biserka Petrovska; Eftim Zdravevski; Petre Lameski; Roberto Corizzo; Ivan Štajduhar; Jonatan Lerga

    Scene classification relying on images is essential in many systems and applications related to remote sensing. The scientific interest in scene classification from remotely collected images is increasing, and many datasets and algorithms are being developed. The introduction of convolutional neural networks (CNN) and other deep learning techniques contributed to vast improvements in the accuracy of

    更新日期:2020-07-14
  • Review of the Real-Time Monitoring of Fluid-Properties in Tubular Architectures for Industrial Applications
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Maha A. Nour; Muhammad M. Hussain

    The real-time monitoring of fluid properties in tubular systems, such as viscosity and flow rate, is essential for industries utilizing liquid mediums. Nowadays, most studies of the fluid characteristics are performed off-line using laboratory facilities that can provide accurate results, yet they do not match the demanded industrial pace. Off-line measurements are ineffective and time-consuming. The

    更新日期:2020-07-14
  • ffective Three-Stage Demosaicking Method for RGBW CFA Images Using The Iterative Error-Compensation Based Approach
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Kuo-Liang Chung; Tzu-Hsien Chan; Szu-Ni Chen

    As the color filter array (CFA)2.0, the RGBW CFA pattern, in which each CFA pixel contains only one R, G, B, or W color value, provides more luminance information than the Bayer CFA pattern. Demosaicking RGBW CFA images I R G B W is necessary in order to provide high-quality RGB full-color images as the target images for human perception. In this letter, we propose a three-stage demosaicking method

    更新日期:2020-07-14
  • ear Shape Parameter Measurement Using a Model-Based Scanning Multi-Distance Measurement Approach
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Marc Pillarz; Axel von Freyberg; Andreas Fischer

    To reduce wind turbine failures by defective drive trains, deviations in the geometry of large gears (diameter ≳ 1 m) must be extensively determined with single-digit micrometer uncertainties. Fixed measuring volumes limit standard measuring methods like coordinate and gear measuring instruments for large gear measurements. Therefore, a model-based scanning multi-distance measurement approach for gear

    更新日期:2020-07-14
  • urface Plasmon Resonance Sensor Based on Dual-Side Polished Microstructured Optical Fiber with Dual-Core
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Haixia Han; Donglian Hou; Nannan Luan; Zhenxu Bai; Li Song; Jianfei Liu; Yongsheng Hu

    A surface plasmon resonance (SPR) sensor based on a dual-side polished microstructured optical fiber (MOF) with a dual core is proposed for a large analyte refractive index (RI; na) detection range. Gold is used as a plasmonic material coated on the polished surface, and analytes can be directly contacted with the gold film. The special structure not only facilitates the fabrication of the sensor,

    更新日期:2020-07-14
  • ow Cost and Compact FMCW 24 GHz Radar Applications for Snowpack and Ice Thickness Measurements
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Patrick Pomerleau; Alain Royer; Alexandre Langlois; Patrick Cliche; Bruno Courtemanche; Jean-Benoît Madore; Ghislain Picard; Éric Lefebvre

    Monitoring the evolution of snow on the ground and lake ice—two of the most important components of the changing northern environment—is essential. In this paper, we describe a lightweight, compact and autonomous 24 GHz frequency-modulated continuous-wave (FMCW) radar system for freshwater ice thickness and snow mass (snow water equivalent, SWE) measurements. Although FMCW radars have a long-established

    更新日期:2020-07-14
  • stimation and Prediction of Vertical Deformations of Random Surfaces, Applying the Total Least Squares Collocation Method
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Zbigniew Wiśniewski; Waldemar Kamiński

    This paper proposes a method for determining the vertical deformations treated as random fields. It is assumed that the monitored surfaces are subject not only to deterministic deformations, but also to random fluctuations. Furthermore, the existence of random noise coming from surface’s vibrations is also assumed. Such noise disturbs the deformation’s functional models. Surface monitoring with the

    更新日期:2020-07-14
  • n Acceptance Test for Assistive Robots
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Francisco Martin Ricoín; Francisco J. Rodríguez-Lera; Jonatan Ginés Clavero; Ángel Manuel Guerrero-Higueras; Vicente Matellán Olivera

    Socially assistive robots have been used in the care of elderly or dependent people, particularly with patients suffering from neurological diseases, like autism and dementia. There are some proposals, but there are no standardized mechanisms for assessing a particular robot’s suitability for specific therapy. This paper reports the evaluation of an acceptance test for assistive robots applied to people

    更新日期:2020-07-14
  • nterleaved Array Transducer with Polarization Inversion Technique to Implement Ultrasound Tissue Harmonic Imaging
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Chan Yuk Park; Jin Ho Sung; Eun Young Jeong; Hee Su Lee; Jong Seob Jeong

    In ultrasound tissue harmonic imaging (THI), it is preferred that the bandwidth of the array transducer covers at least the fundamental frequency f0 for transmission and the second harmonic frequency 2f0 for reception. However, it is challenging to develop an array transducer with a broad bandwidth due to the single resonance characteristics of piezoelectric materials. In this study, we present an

    更新日期:2020-07-14
  • ompact Imaging Systems Based on Annular Harmonic Lenses
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Roman Skidanov; Yury Strelkov; Sergey Volotovsky; Veronika Blank; Sofiya Ganchevskaya; Vladimir Podlipnov; Nikolay Ivliev; Nikolay Kazanskiy

    In this study, a configuration of a compact imaging objective based on a reflecting annular harmonic lens was proposed. Light propagation through the proposed optical system was comprehensively modeled using a dedicated special program and the ZEMAX software, with the latter used to derive the point spread function (PSF). Several relationships were used to describe the connection between key parameters

    更新日期:2020-07-14
  • Tool to Calculate the Level of Occupancy in Indoor and Outdoor Spaces Using BLE and Open Data to Be Published in Real-Time
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Montserrat Mateos Sánchez; Roberto Berjón Gallinas; M. Encarnación Beato Gutiérrez; Ana M. Fermoso García

    The ability to know the precise level of occupancy in an indoor or outdoor space in real time could have multiple applications. It is a well-known problem for which a number of technologies have been proposed over time. The recent emergence of BLE beacon technology has provided a solution to the problem. This study presents a tool that uses beacons and user smartphones to determine the level of occupancy

    更新日期:2020-07-14
  • An fNIR Study
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Telmo Pereira; Maria António Castro; Santos Villafaina; António Carvalho Santos; Juan Pedro Fuentes-García

    This study aimed to compare the dynamics of the prefrontal cortex (PFC), between adult and adolescent chess players, during chess-based problem-solving tasks of increasing level of difficulty, relying on the identification of changes in oxygenated hemoglobin (HbO2) and hemoglobin (HHb) through the functional near-infrared spectroscopy (fNIRS) method. Thirty male federated chess players (mean age: 24

    更新日期:2020-07-14
  • limDeblurGAN-Based Motion Deblurring and Marker Detection for Autonomous Drone Landing
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Noi Quang Truong; Young Won Lee; Muhammad Owais; Dat Tien Nguyen; Ganbayar Batchuluun; Tuyen Danh Pham; Kang Ryoung Park

    Deep learning-based marker detection for autonomous drone landing is widely studied, due to its superior detection performance. However, no study was reported to address non-uniform motion-blurred input images, and most of the previous handcrafted and deep learning-based methods failed to operate with these challenging inputs. To solve this problem, we propose a deep learning-based marker detection

    更新日期:2020-07-14
  • Novel Method for Objective Selection of Information Sources Using Multi-Kernel SVM and Local Scaling
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Henry Jhoán Areiza-Laverde; Andrés Eduardo Castro-Ospina; María Liliana Hernández; Gloria M. Díaz

    Advancement on computer and sensing technologies has generated exponential growth in the data available for the development of systems that support decision-making in fields such as health, entertainment, manufacturing, among others. This fact has made that the fusion of data from multiple and heterogeneous sources became one of the most promising research fields in machine learning. However, in real-world

    更新日期:2020-07-14
  • Novel Mine Cage Safety Monitoring Algorithm Utilizing Visible Light
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Xu Yang; Mingzhi Pang; Peihao Li; Pengpeng Chen; Qiang Niu

    The mine cage has an important role in the production of coal mines. It has many safety problems in the transportation of people, such as overloading of personnel and illegal outreach of human limbs. However, the harsh mine environment makes it very difficult to monitor personnel overload and limb extension. To solve these two problems, we propose a novel safety monitoring algorithm of the mine cage

    更新日期:2020-07-14
  • he Use of Factorial Design and Simplex Optimization to Improve Analytical Performance of In Situ Film Electrodes
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Matjaž Finšgar; Klara Jezernik

    This work presents a systematic approach to determining the significance of the individual factors affecting the analytical performance of in-situ film electrode (FE) for the determination of Zn(II), Cd(II), and Pb(II). Analytical parameters were considered simultaneously, where the lowest limit of quantification, the widest linear concentration range, and the highest sensitivity, accuracy, and precision

    更新日期:2020-07-14
  • apping of Agricultural Subsurface Drainage Systems Using a Frequency-Domain Ground Penetrating Radar and Evaluating Its Performance Using a Single-Frequency Multi-Receiver Electromagnetic Induction Instrument
    Sensors (IF 3.275) Pub Date : 2020-07-14
    Triven Koganti; Ellen Van De Vijver; Barry J. Allred; Mogens H. Greve; Jørgen Ringgaard; Bo V. Iversen

    Subsurface drainage systems are commonly used to remove surplus water from the soil profile of a poorly drained farmland. Traditional methods for drainage mapping involve the use of tile probes and trenching equipment that are time-consuming, labor-intensive, and invasive, thereby entailing an inherent risk of damaging the drainpipes. Effective and efficient methods are needed in order to map the buried

    更新日期:2020-07-14
  • A Novel Technique to Measure Heart Mechanical Vibrations onto the Chest Wall
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Emilio Andreozzi; Antonio Fratini; Daniele Esposito; Ganesh Naik; Caitlin Polley; Gaetano D. Gargiulo; Paolo Bifulco

    This paper presents forcecardiography (FCG), a novel technique to measure local, cardiac-induced vibrations onto the chest wall. Since the 19th century, several techniques have been proposed to detect the mechanical vibrations caused by cardiovascular activity, the great part of which was abandoned due to the cumbersome instrumentation involved. The recent availability of unobtrusive sensors rejuvenated

    更新日期:2020-07-13
  • owards Breathing as a Sensing Modality in Depth-Based Activity Recognition
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Jochen Kempfle; Kristof Van Laerhoven

    Depth imaging has, through recent technological advances, become ubiquitous as products become smaller, more affordable, and more precise. Depth cameras have also emerged as a promising modality for activity recognition as they allow detection of users’ body joints and postures. Increased resolutions have now enabled a novel use of depth cameras that facilitate more fine-grained activity descriptors:

    更新日期:2020-07-13
  • n Intelligent Opportunistic Routing Algorithm for Wireless Sensor Networks and Its Application Towards e-Healthcare
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Deep Kumar Bangotra; Yashwant Singh; Arvind Selwal; Nagesh Kumar; Pradeep Kumar Singh; Wei-Chiang Hong

    The lifetime of a node in wireless sensor networks (WSN) is directly responsible for the longevity of the wireless network. The routing of packets is the most energy-consuming activity for a sensor node. Thus, finding an energy-efficient routing strategy for transmission of packets becomes of utmost importance. The opportunistic routing (OR) protocol is one of the new routing protocol that promises

    更新日期:2020-07-13
  • uadrotor-Based Lighthouse Localization with Time-Synchronized Wireless Sensor Nodes and Bearing-Only Measurements
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Brian G. Kilberg; Felipe M. R. Campos; Craig B. Schindler; Kristofer S. J. Pister

    Some robotic localization methods, such as ultra wideband localization and lighthouse localization, require external localization infrastructure in order to operate. However, there are situations where this localization infrastructure does not exist in the field, such as robotic exploration tasks. Deploying low power wireless sensor networks (WSNs) as localization infrastructure can potentially solve

    更新日期:2020-07-13
  • stimation for Runway Friction Coefficient Based on Multi-Sensor Information Fusion and Model Correlation
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Yadong Niu; Sixiang Zhang; Guangjun Tian; Huabo Zhu; Wei Zhou

    Friction is a crucial factor affecting air accident occurrence on landing or taking off. Tire–runway friction directly contributes to aircraft stability on land. Therefore, an accurate friction estimation is a rising issue for all stakeholders. This paper summarizes the existing measurement methods, and a multi-sensor information fusion scheme is proposed to estimate the friction coefficient between

    更新日期:2020-07-13
  • ensors for Cryogenic Isotope-Separation Column
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Eva H. Dulf; Clement Festila

    Cryogenic isotope-separation equipment is special, encountered in relative few research centers in the world. In addition to the main equipment used in the operation column, a broad range of measuring devices and actuators are involved in the technological process. The proper sensors and transducers exhibit special features; therefore, common, industrial versions cannot be used. Three types of original

    更新日期:2020-07-13
  • ynthesis, Photophysical Characterization, and Sensor Activity of New 1,8-Naphthalimide Derivatives
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Stanislava Yordanova-Tomova; Diana Cheshmedzhieva; Stanimir Stoyanov; Todor Dudev; Ivo Grabchev

    Three new 1,8-naphthalimide derivatives M1–M3 with different substituents at the C-4 position have been synthesized and characterized. Their photophysical properties have been investigated in organic solvents of different polarity, and their fluorescence intensity was found to depend strongly on both the polarity of the solvents and the type of substituent at C-4. For compounds M1 and M2 having a tertiary

    更新日期:2020-07-13
  • A Review
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Md Ashfaque Hossain Khan; Mulpuri V. Rao

    In the last two decades, GaN nanostructures of various forms like nanowires (NWs), nanotubes (NTs), nanofibers (NFs), nanoparticles (NPs) and nanonetworks (NNs) have been reported for gas sensing applications. In this paper, we have reviewed our group’s work and the works published by other groups on the advances in GaN nanostructures-based sensors for detection of gases such as hydrogen (H2), alcohols

    更新日期:2020-07-13
  • valuation and Impact Reduction of Common Mode Currents on Antenna Feeders in Radiation Measurements
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Andreea Constantin; Razvan D. Tamas

    Common mode currents on antenna feeders usually occur when feeding a symmetric radiator through an asymmetric line, or when the ground plane is electrically small. Such currents may have magnitudes comparable to the feed currents and therefore have a major impact on the total radiated field. For antenna radiation measurements, both assessment and reduction of the common mode currents on antenna feeders

    更新日期:2020-07-13
  • ondition Evaluation of an Existing T-Beam Bridge Based on Neutral Axis Variation Monitored with Ultrasonic Coda Waves in a Network of Sensors
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Hanyu Zhan; Hanwan Jiang; Jinquan Zhang; Ruinian Jiang

    Neutral axis passing through the stiffness centroid of a structure is correlated with structural health conditions. Traditional techniques rely on gauge arrays to observe strains at their installation positions, and then locate a neutral axis through the intercept of the strain diagram. However, these localization results will be severely deviated if any damages exist among gauges or inside structures

    更新日期:2020-07-13
  • rincipal Component Thermography for Defect Detection in Concrete
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Bojan Milovanović; Mergim Gaši; Sanjin Gumbarević

    The goal of the condition assessment of concrete structures is to gain an insight into current condition of concrete and the existence of defects, which decrease durability and usability of the structure. Defects are quite difficult to detect using infrared thermography when concrete elements cannot be thermally excited with the Sun, together with unfavorable thermophysical properties of concrete structures

    更新日期:2020-07-13
  • Similarities, Differences, and Future Prospects
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Nina Cvar; Jure Trilar; Andrej Kos; Mojca Volk; Emilija Stojmenova Duh

    Initially, the concept of Smart Cities (urban settlement) originated from the Internet of Things (IoT) technology, however, the use of IoT technology can be extended to the concept of Smart Villages (rural settlement) as well, improving the life of the villagers, and the communities as a whole. Yet, the rural settlements have slightly different requirements than the urban like settlements. If application

    更新日期:2020-07-13
  • nhanced Action Recognition Using Multiple Stream Deep Learning with Optical Flow and Weighted Sum
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Hyunwoo Kim; Seokmok Park; Hyeokjin Park; Joonki Paik

    Various action recognition approaches have recently been proposed with the aid of three-dimensional (3D) convolution and a multiple stream structure. However, existing methods are sensitive to background and optical flow noise, which prevents from learning the main object in a video frame. Furthermore, they cannot reflect the accuracy of each stream in the process of combining multiple streams. In

    更新日期:2020-07-13
  • eep Physiological Model for Blood Glucose Prediction in T1DM Patients
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Mario Munoz-Organero

    Accurate estimations for the near future levels of blood glucose are crucial for Type 1 Diabetes Mellitus (T1DM) patients in order to be able to react on time and avoid hypo and hyper-glycemic episodes. Accurate predictions for blood glucose are the base for control algorithms in glucose regulating systems such as the artificial pancreas. Numerous research studies have already been conducted in order

    更新日期:2020-07-13
  • emperature Stability and Spectral Tuning of Long Period Fiber Gratings Fabricated by Femtosecond Laser Direct Writing
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Duarte Viveiros; José M. M. M. de Almeida; Luís Coelho; Helena Vasconcelos; João M. Maia; Vítor A. Amorim; Pedro A. S. Jorge; Paulo V. S. Marques

    Long period fiber gratings (LPFGs) were fabricated in a standard single mode fiber (SMF-28e) through femtosecond (fs) laser direct writing. LPFGs with longer and shorter periods were fabricated, which allows coupling from the fundamental core mode to lower and higher order asymmetric cladding modes (LP1,6 and LP1,12, respectively). For the grating periods of 182.7 and 192.5 µm, it was verified that

    更新日期:2020-07-13
  • alidation of Marker-Less System for the Assessment of Upper Joints Reaction Forces in Exoskeleton Users
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Simone Pasinetti; Cristina Nuzzi; Nicola Covre; Alessandro Luchetti; Luca Maule; Mauro Serpelloni; Matteo Lancini

    This paper presents the validation of a marker-less motion capture system used to evaluate the upper limb stress of subjects using exoskeletons for locomotion. The system fuses the human skeletonization provided by commercial 3D cameras with forces exchanged by the user to the ground through upper limbs utilizing instrumented crutches. The aim is to provide a low cost, accurate, and reliable technology

    更新日期:2020-07-13
  • Spatially Distributed Fiber-Optic Temperature Sensor for Applications in the Steel Industry
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Muhammad Roman; Damilola Balogun; Yiyang Zhuang; Rex E. Gerald; Laura Bartlett; Ronald J. O’Malley; Jie Huang

    This paper presents a spatially distributed fiber-optic sensor system designed for demanding applications, like temperature measurements in the steel industry. The sensor system employed optical frequency domain reflectometry (OFDR) to interrogate Rayleigh backscattering signals in single-mode optical fibers. Temperature measurements employing the OFDR system were compared with conventional thermocouple

    更新日期:2020-07-13
  • Novel Multi-Focus Image Fusion Network with U-Shape Structure
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Tao Pan; Jiaqin Jiang; Jian Yao; Bin Wang; Bin Tan

    Multi-focus image fusion has become a very practical image processing task. It uses multiple images focused on various depth planes to create an all-in-focus image. Although extensive studies have been produced, the performance of existing methods is still limited by the inaccurate detection of the focus regions for fusion. Therefore, in this paper, we proposed a novel U-shape network which can generate

    更新日期:2020-07-13
  • A Virtualized Perspective
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Adnan Rashid; Tommaso Pecorella; Francesco Chiti

    The Internet of Things (IoT) has been one of the main focus areas of the research community in recent years, the requirements of which help network administrators to design and ensure the functionalities and resources of each device. Generally, two types of devices—constrained and unconstrained devices—are typical in the IoT environment. Devices with limited resources—for example, sensors and actuators—are

    更新日期:2020-07-13
  • n Efficient Segmentation and Classification System in Medical Images Using Intuitionist Possibilistic Fuzzy C-Mean Clustering and Fuzzy SVM Algorithm
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Chiranji Lal Chowdhary; Mohit Mittal; Kumaresan P.; P. A. Pattanaik; Zbigniew Marszalek

    The herpesvirus, polyomavirus, papillomavirus, and retrovirus families are associated with breast cancer. More effort is needed to assess the role of these viruses in the detection and diagnosis of breast cancer cases in women. The aim of this paper is to propose an efficient segmentation and classification system in the Mammography Image Analysis Society (MIAS) images of medical images. Segmentation

    更新日期:2020-07-13
  • obust Control for the Detection Threshold of CFAR Process in Cluttered Environments
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Jeong Hoon Shin; Youngjin Choi

    The constant false alarm rate (CFAR) process is essential for target detection in radar systems. Although the detection performance of the CFAR process is normally guaranteed in noise-limited environments, it may be dramatically degraded in clutter-limited environments since the probabilistic characteristics for clutter are unknown. Therefore, sophisticated CFAR processes that suppress the effect of

    更新日期:2020-07-13
  • alidation of a Wireless Bluetooth Photoplethysmography Sensor Used on the Earlobe for Monitoring Heart Rate Variability Features during a Stress-Inducing Mental Task in Healthy Individuals
    Sensors (IF 3.275) Pub Date : 2020-07-13
    Bruno Correia; Nuno Dias; Patrício Costa; José Miguel Pêgo

    Heart rate variability (HRV), using electrocardiography (ECG), has gained popularity as a biomarker of the stress response. Alternatives to HRV monitoring, like photoplethysmography (PPG), are being explored as cheaper and unobtrusive non-invasive technologies. We report a new wireless PPG sensor that was tested in detecting changes in HRV, elicited by a mentally stressful task, and to determine if

    更新日期:2020-07-13
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