Sensors

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A Conformal Frequency Reconfigurable Antenna with Multiband and Wideband Characteristics
Sensors - Tập 22 Số 7 - Trang 2601 - 2022
Hussain, Niamat, Ghaffar, Adnan, Naqvi, Syeda Iffat, Iftikhar, Adnan, Anagnostou, Dimitris E., Tran, Huy H.
A compact flexible multi-frequency antenna for smart portable and flexible devices is presented. The antenna consists of a coplanar waveguide-fed slotted circular patch connected to a rectangular secondary resonator (stub). A thin low-loss substrate is used for flexibility, and a rectangular stub in the feedline is deployed to attain wide operational bandwidth. A rectangular slot is etched in the ...... hiện toàn bộ
Evanescent Wave Fiber Optic Biosensor for Salmonella Detection in Food
Sensors - Tập 9 Số 7 - Trang 5810-5824
Angela M. Valadez, Carlos Lana, Shu‐I Tu, Mark T. Morgan, Arun K. Bhunia
Salmonella enterica is a major food-borne pathogen of world-wide concern. Sensitive and rapid detection methods to assess product safety before retail distribution are highly desirable. Since Salmonella is most commonly associated with poultry products, an evanescent wave fiber-optic assay was developed to detect Salmonella in shell egg and chicken breast and data were compared with a time...... hiện toàn bộ
Kinetic Energy Harvesting for Wearable Medical Sensors
Sensors - Tập 19 Số 22 - Trang 4922
Petar Gljušćić, Saša Zelenika, David Blažević, Ervin Kamenar
The process of collecting low-level kinetic energy, which is present in all moving systems, by using energy harvesting principles, is of particular interest in wearable technology, especially in ultra-low power devices for medical applications. In fact, the replacement of batteries with innovative piezoelectric energy harvesting devices can result in mass and size reduction, favoring the m...... hiện toàn bộ
Characterization of the Response of Magnetron Sputtered In2O3−x Sensors to NO2
Sensors - Tập 23 Số 6 - Trang 3265
Enza Panzardi, Nicola Calisi, Nicoleta Enea, Ada Fort, Marco Mugnaini, Valerio Vignoli, A. Vinattieri, M. Bruzzi
The response of resistive In2O3−x sensing devices was investigated as a function of the NO2 concentration in different operative conditions. Sensing layers are 150 nm thick films manufactured by oxygen-free room temperature magnetron sputtering deposition. This technique allows for a facile and fast manufacturing process, at same time providing advantages in terms of gas sensing performanc...... hiện toàn bộ
Ubiquitous Geo-Sensing for Context-Aware Analysis: Exploring Relationships between Environmental and Human Dynamics
Sensors - Tập 12 Số 7 - Trang 9800-9822
Günther Sagl, Thomas Blaschke, Euro Beinat, Bernd Resch
Ubiquitous geo-sensing enables context-aware analyses of physical and social phenomena, i.e., analyzing one phenomenon in the context of another. Although such context-aware analysis can potentially enable a more holistic understanding of spatio-temporal processes, it is rarely documented in the scientific literature yet. In this paper we analyzed the collective human behavior in the conte...... hiện toàn bộ
A VCII-Based Stray Insensitive Analog Interface for Differential Capacitance Sensors
Sensors - Tập 19 Số 16 - Trang 3545
Gianluca Barile, Leila Safari, Giuseppe Ferri, Vincenzo Stornelli
In this paper, a novel approach to implement a stray insensitive CMOS interface for differential capacitive sensors is presented. The proposed circuit employs, for the first time, second-generation voltage conveyors (VCIIs) and produces an output voltage proportional to differential capacitor changes. Using VCIIs as active devices inherently allows the circuit to process the signal in the ...... hiện toàn bộ
A Robust Diffusion Minimum Kernel Risk-Sensitive Loss Algorithm over Multitask Sensor Networks
Sensors - Tập 19 Số 10 - Trang 2339
Xinyu Li, Qing Shi, Shuangyi Xiao, Shukai Duan, Feng Chen
Distributed estimation over sensor networks has attracted much attention due to its various applications. The mean-square error (MSE) criterion is one of the most popular cost functions used in distributed estimation, which achieves its optimality only under Gaussian noise. However, impulsive noise also widely exists in real-world sensor networks. Thus, the distributed estimation algorithm...... hiện toàn bộ
A Coupled Remote Sensing and Simplified Surface Energy Balance Approach to Estimate Actual Evapotranspiration from Irrigated Fields
Sensors - Tập 7 Số 6 - Trang 979-1000
G. B. Senay, Michael Budde, J. P. Verdin, Assefa M. Melesse
Accurate crop performance monitoring and production estimation are critical fortimely assessment of the food balance of several countries in the world. Since 2001, theFamine Early Warning Systems Network (FEWS NET) has been monitoring cropperformance and relative production using satellite-derived data and simulation models inAfrica, Central America, and Afghanistan where ground-based moni...... hiện toàn bộ
Block-Based Connected-Component Labeling Algorithm Using Binary Decision Trees
Sensors - Tập 15 Số 9 - Trang 23763-23787
Wan-Yu Chang, Chung‐Cheng Chiu, Jia-Horng Yang
In this paper, we propose a fast labeling algorithm based on block-based concepts. Because the number of memory access points directly affects the time consumption of the labeling algorithms, the aim of the proposed algorithm is to minimize neighborhood operations. Our algorithm utilizes a block-based view and correlates a raster scan to select the necessary pixels generated by a block-bas...... hiện toàn bộ
Rapid SARS-CoV-2 Detection Using Electrochemical Immunosensor
Sensors - Tập 21 Số 2 - Trang 390
Biljana Mojsoska, Sylvester Larsen, Dorte Aalund Olsen, Jonna Skov Madsen, Ivan Brandslund, Fatima AlZahra’a Alatraktchi
The outbreak of the coronavirus disease (COVID-19) pandemic caused by the novel coronavirus (SARS-CoV-2) has been declared an international public health crisis. It is essential to develop diagnostic tests that can quickly identify infected individuals to limit the spread of the virus and assign treatment options. Herein, we report a proof-of-concept label-free electrochemical immunoassay ...... hiện toàn bộ
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