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Total 2011 results found since Jan 2013.

Sensors, Vol. 23, Pages 7474: Interoperable IoMT Approach for Remote Diagnosis with Privacy-Preservation Perspective in Edge Systems
‚awiak The emergence of the Internet of Medical Things (IoMT) has brought together developers from the Industrial Internet of Things (IIoT) and healthcare providers to enable remote patient diagnosis and treatment using mobile-device-collected data. However, the utilization of traditional AI systems raises concerns about patient privacy. To address this issue, we present a privacy-enhanced approach for illness diagnosis within the IoMT framework. Our proposed interoperable IoMT implementation focuses on optimizing IoT network performance, including throughput, energy consumption, latency, packet delivery ratio, and net...
Source: Sensors - August 28, 2023 Category: Biotechnology Authors: Erana Veerappa Dinesh Subramaniam Kathiravan Srinivasan Saeed Mian Qaisar Pawe Å‚ PÅ‚awiak Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7472: A Real-Time Path Planning Method for Urban Low-Altitude Logistics UAVs
Peng To solve the problem of poor real-time performance in path planning algorithms for unmanned aerial vehicles (UAVs) in low-altitude urban logistics, a path planning method combining modified Beetle Antennae Search (BAS) with the Simulated Annealing (SA) algorithm is proposed. Firstly, based on the requirements of task execution and constraints of UAV flight, a fitness function for real-time search of waypoints is designed while ensuring the safety and obstacle avoidance of the UAV. Then, to improve the search accuracy and real-time performance, determining the initial search direction in the BAS algorithm is impro...
Source: Sensors - August 28, 2023 Category: Biotechnology Authors: Minyi Deng Qingqing Yang Yi Peng Tags: Technical Note Source Type: research

Sensors, Vol. 23, Pages 7461: Performance Optimization in Frequency Estimation of Noisy Signals: Ds-IpDTFT Estimator
Juncai Xu This research presents a comprehensive study of the dichotomous search iterative parabolic discrete time Fourier transform (Ds-IpDTFT) estimator, a novel approach for fine frequency estimation in noisy exponential signals. The proposed estimator leverages a dichotomous search process before iterative interpolation estimation, which significantly reduces computational complexity while maintaining high estimation accuracy. An in-depth exploration of the relationship between the optimal parameter p and the unknown parameter δ forms the backbone of the methodology. Through extensive simulations an...
Source: Sensors - August 28, 2023 Category: Biotechnology Authors: Miaomiao Wei Yongsheng Zhu Jun Sun Xiangyang Lu Xiaomin Mu Juncai Xu Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7421: Smooth Autonomous Patrolling for a Differential-Drive Mobile Robot in Dynamic Environments
vić Today, mobile robots have a wide range of real-world applications where they can replace or assist humans in many tasks, such as search and rescue, surveillance, patrolling, inspection, environmental monitoring, etc. These tasks usually require a robot to navigate through a dynamic environment with smooth, efficient, and safe motion. In this paper, we propose an online smooth-motion-planning method that generates a smooth, collision-free patrolling trajectory based on clothoid curves. Moreover, the proposed method combines global and local planning methods, which are suitable for changing large environments and en...
Source: Sensors - August 25, 2023 Category: Biotechnology Authors: Ana Šelek Marija Seder Ivan Petrovi ć Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7407: Sensor Selection for Tidal Volume Determination via Linear Regression & mdash;Impact of Lasso versus Ridge Regression
Sensors, Vol. 23, Pages 7407: Sensor Selection for Tidal Volume Determination via Linear Regression—Impact of Lasso versus Ridge Regression Sensors doi: 10.3390/s23177407 Authors: Bernhard Laufer Paul D. Docherty Rua Murray Sabine Krueger-Ziolek Nour Aldeen Jalal Fabian Hoeflinger Stefan J. Rupitsch Leonhard Reindl Knut Moeller The measurement of respiratory volume based on upper body movements by means of a smart shirt is increasingly requested in medical applications. This research used upper body surface motions obtained by a motion capture system, and two regression methods to determin...
Source: Sensors - August 25, 2023 Category: Biotechnology Authors: Bernhard Laufer Paul D. Docherty Rua Murray Sabine Krueger-Ziolek Nour Aldeen Jalal Fabian Hoeflinger Stefan J. Rupitsch Leonhard Reindl Knut Moeller Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7380: Electrochemical DNA Biosensors with Dual-Signal Amplification Strategy for Highly Sensitive HPV 16 Detection
Jie Du Cervical cancer is an important topic in the study of global health issues, ranking fourth among women’s cancer cases in the world. It is one of the nine major cancers that China is focusing on preventing and treating, and it is the only cancer that can be prevented through vaccination. Systematic and effective screening for human papilloma (HPV) infection, which is closely linked to the development of cervical cancer, can reduce cervical cancer incidence and mortality. In this paper, an electrochemical sensor was designed to detect HPV 16 using dual-signal amplification. An APTES-modified glass...
Source: Sensors - August 24, 2023 Category: Biotechnology Authors: Yuxing Yang Yazhen Liao Yang Qing Haiyu Li Jie Du Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7370: A White Shark Equilibrium Optimizer with a Hybrid Deep-Learning-Based Cybersecurity Solution for a Smart City Environment
d S. Salama Smart grids (SGs) play a vital role in the smart city environment, which exploits digital technology, communication systems, and automation for effectively managing electricity generation, distribution, and consumption. SGs are a fundamental module of smart cities that purpose to leverage technology and data for enhancing the life quality for citizens and optimize resource consumption. The biggest challenge in dealing with SGs and smart cities is the potential for cyberattacks comprising Distributed Denial of Service (DDoS) attacks. DDoS attacks involve overwhelming a system with a huge volume of traffic, c...
Source: Sensors - August 24, 2023 Category: Biotechnology Authors: Latifah Almuqren Sumayh S. Aljameel Hamed Alqahtani Saud S. Alotaibi Manar Ahmed Hamza Ahmed S. Salama Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7398: Multi-UAV Collaborative Search and Attack Mission Decision-Making in Unknown Environments
ng Fu To address the challenge of coordinated combat involving multiple UAVs in reconnaissance and search attacks, we propose the Multi-UAV Distributed Self-Organizing Cooperative Intelligence Surveillance and Combat (CISCS) strategy. This strategy employs distributed control to overcome issues associated with centralized control and communication difficulties. Additionally, it introduces a time-constrained formation controller to address the problem of unstable multi-UAV formations and lengthy formation times. Furthermore, a multi-task allocation algorithm is designed to tackle the issue of allocating multiple tasks t...
Source: Sensors - August 24, 2023 Category: Biotechnology Authors: Zibin Liang Qing Li Guodong Fu Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7359: Designing UAV Swarm Experiments: A Simulator Selection and Experiment Design Process
This study describes the crucial requirement for comprehensive experimental design of UAV swarm systems before their deployment in real-world scenarios. To achieve this, we begin with a concise review of existing simulation platforms, assessing their suitability for various specific needs. Through this evaluation, we identify the most appropriate tools to facilitate one’s research objectives. Subsequently, we present an experimental design process tailored for validating the resilience and performance of UAV swarm systems for accomplishing the desired objectives. Furthermore, we explore strategies to simulate...
Source: Sensors - August 23, 2023 Category: Biotechnology Authors: Abhishek Phadke F. Antonio Medrano Chandra N. Sekharan Tianxing Chu Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7324: RFID Backscatter Based Sport Motion Sensing Using ECOC-Based SVM
Hua With the advent of the 5G era, radio frequency identification (RFID) has been widely applied in various fields as one of the key technologies for the Internet of Things (IoT) to realize the Internet of Everything (IoE). In recent years, RFID-based motion sensing has emerged as an important research area with great potential for development. In this paper, an RFID backscatter sport motion sensing scheme is proposed, which effectively solves the multi-classification problem by using the received signal strength (RSS) of the backscattered RFID and the error correcting output coding (ECOC)-based support vector machine ...
Source: Sensors - August 22, 2023 Category: Biotechnology Authors: Lei Han Xia Hua Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7311: Coarse-to-Fine Localization for Detecting Misalignment State of Angle Cocks
ua Li The state of angle cocks determines the air connectivity of freight trains, and detecting their state is helpful to improve the safety of the running trains. Although the current research for fault detection of angle cocks has achieved high accuracy, it only focuses on the detection of the closed state and non-closed state and treats them as normal and abnormal states, respectively. Since the non-closed state includes the fully open state and the misalignment state, while the latter may lead to brake abnormally, it is very necessary to further detect the misalignment state from the non-closed state. In this paper...
Source: Sensors - August 22, 2023 Category: Biotechnology Authors: Hengda Lei Li Cao Xiuhua Li Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7292: Human Activity Recognition via Score Level Fusion of Wi-Fi CSI Signals
In this study, we investigate a score-level fusion structure for human activity recognition using the Wi-Fi channel state information (CSI) signals. The raw CSI signals undergo an important preprocessing stage before being classified using conventional classifiers at the first level. The output scores of two conventional classifiers are then fused via an analytic network that does not require iterative search for learning. Our experimental results show that the fusion provides good generalization and a shorter learning processing time compared with state-of-the-art networks.
Source: Sensors - August 21, 2023 Category: Biotechnology Authors: Gunsik Lim Beomseok Oh Donghyun Kim Kar-Ann Toh Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7264: Unmanned Ariel Vehicle (UAV) Path Planning for Area Segmentation in Intelligent Landmine Detection Systems
This study presents a framework for autonomous UAV-based landmine detection to determine the coverage route for scanning the target area. It is performed by extracting the area of interest using segmentation based on deep learning and then constructing the coverage route plan for the aerial survey. Multiple coverage path patterns are used to identify the ideal UAV route. The effectiveness of the suggested framework is evaluated using several target areas of differing sizes and complexities.
Source: Sensors - August 18, 2023 Category: Biotechnology Authors: Ahmed Barnawi Krishan Kumar Neeraj Kumar Nisha Thakur Bander Alzahrani Amal Almansour Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7199: A Hybrid Indoor Positioning System Based on Visible Light Communication and Bluetooth RSS Trilateration
wad Indoor positioning has become an attractive research topic because of the drawbacks of the global navigation satellite system (GNSS), which cannot detect accurate locations within indoor areas. Radio-based positioning technologies are one major category of indoor positioning systems. Another major category consists of visible light communication-based solutions, as they have become a revolutionary technology for indoor positioning in recent years. The proposed study intends to make use of both technologies by creating a hybrid indoor positioning system that uses VLC and Bluetooth together. The system first collects...
Source: Sensors - August 16, 2023 Category: Biotechnology Authors: Lamya Albraheem Sarah Alawad Tags: Article Source Type: research

Sensors, Vol. 23, Pages 7195: In-Loco Optical Spectroscopy through a Multiple Digital Lock-In on a Linear Charge-Coupled Device (CCD) Array
Lima Accurate and reliable measurements of optical properties are crucial for a wide range of industrial and commercial applications. However, external illumination fluctuations can often make these measurements challenging to obtain. This work proposes a new technique based on digital lock-in processing that enables the use of CCD spectrometers in optical spectroscopy applications, even in uncontrolled lighting conditions. This approach leverages digital lock-in processing, performed on each pixel of the spectrometer’s CCD simultaneously, to mitigate the impact of external optical interferences. The effe...
Source: Sensors - August 16, 2023 Category: Biotechnology Authors: Hugo Fons êca Diego Rativa Ricardo Lima Tags: Article Source Type: research