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Total 1395 results found since Jan 2013.

Sensors, Vol. 22, Pages 9663: Saliency-Based Rotor Spatial Position Displacement Self-Sensing for Self-Bearing Machines
igosa Self-bearing machines do not contain physical bearings but magnetic bearings. Both rotor rotary and spatial positions displacement are required in these types of machines to control the rotor position while it is levitating. Self-bearing machines often use external sensors for x (horizontal) and y (vertical) spatial position measurement, which will result in additional cost, volume, complexity, and number of parts susceptible to failure. To overcome these issues, this paper proposes a xy-position estimation self-sensing technique based on both main- and cross-inductance variation. The proposed method estimates x ...
Source: Sensors - December 9, 2022 Category: Biotechnology Authors: Ye gu Kang Daniel Fernandez David Diaz Reigosa Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9653: Dynamic Sub-Swarm Approach of PSO Algorithms for Text Document Clustering
hoi Text document clustering is one of the data mining techniques used in many real-world applications such as information retrieval from IoT Sensors data, duplicate content detection, and document organization. Swarm intelligence (SI) algorithms are suitable for solving complex text document clustering problems compared to traditional clustering algorithms. The previous studies show that in SI algorithms, particle swarm optimization (PSO) provides an effective solution to text document clustering problems. This PSO still needs to be improved to avoid the problems such as premature convergence to local optima. In this ...
Source: Sensors - December 9, 2022 Category: Biotechnology Authors: Suganya Selvaraj Eunmi Choi Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9621: An Equivalent Consumption Minimization Strategy for a Parallel Plug-In Hybrid Electric Vehicle Based on an Environmental Perceiver
uoran Hou An energy management strategy is a key technology used to exploit the energy-saving potential of a plug-in hybrid electric vehicle. This paper proposes the environmental perceiver-based equivalent consumption minimization strategy (EP-ECMS) for parallel plug-in hybrid vehicles. In this method, the traffic characteristic information obtained from the intelligent traffic system is used to guide the adjustment of the equivalence factor, improving the environmental adaptiveness of the equivalent consumption minimization strategy (ECMS). Two main works have been completed. First, a high-accuracy environmental perc...
Source: Sensors - December 8, 2022 Category: Biotechnology Authors: Shilin Pu Liang Chu Jincheng Hu Shibo Li Zhuoran Hou Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9609: Automated Detection of Substance-Use Status and Related Information from Clinical Text
This study aims to develop and evaluate an automated system for extracting information related to patient substance use (smoking, alcohol, and drugs) from unstructured clinical text (medical discharge records). The authors propose a four-stage system for the extraction of the substance-use status and related attributes (type, frequency, amount, quit-time, and period). The first stage uses a keyword search technique to detect sentences related to substance use and to exclude unrelated records. In the second stage, an extension of the NegEx negation detection algorithm is developed and employed for detecting the negated reco...
Source: Sensors - December 8, 2022 Category: Biotechnology Authors: Raid Alzubi Hadeel Alzoubi Stamos Katsigiannis Daune West Naeem Ramzan Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9546: Digital-Twin-Assisted Edge-Computing Resource Allocation Based on the Whale Optimization Algorithm
Wang Ao Li With the rapid increase of smart Internet of Things (IoT) devices, edge networks generate a large number of computing tasks, which require edge-computing resource devices to complete the calculations. However, unreasonable edge-computing resource allocation suffers from high-power consumption and resource waste. Therefore, when user tasks are offloaded to the edge-computing system, reasonable resource allocation is an important issue. Thus, this paper proposes a digital-twin-(DT)-assisted edge-computing resource-allocation model and establishes a joint-optimization function of power consumption, delay, an...
Source: Sensors - December 6, 2022 Category: Biotechnology Authors: Shaoming Qiu Jiancheng Zhao Yana Lv Jikun Dai Fen Chen Yahui Wang Ao Li Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9531: Improved CNN-Based Indoor Localization by Using RGB Images and DBSCAN Algorithm
jie Hou With the intense deployment of wireless systems and the widespread use of intelligent equipment, the requirement for indoor positioning services is increasing, and Wi-Fi fingerprinting has emerged as the most often used approach to identifying indoor target users. The construction time of the Wi-Fi received signal strength (RSS) fingerprint database is short, but the positioning performance is unstable and susceptible to noise. Meanwhile, to strengthen indoor positioning precision, a fingerprints algorithm based on a convolution neural network (CNN) is often used. However, the number of reference points partici...
Source: Sensors - December 6, 2022 Category: Biotechnology Authors: Fang Cheng Guofeng Niu Zhizhong Zhang Chengjie Hou Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9513: Improving Convergence Speed of Bat Algorithm Using Multiple Pulse Emissions Along Multiple Directions
med ElAffendi Metaheuristic algorithms are effectively used in searching some optical solution space. for optical solution. It is basically the type of local search generalization that can provide useful solutions for issues related to optimization. Several benefits are associated with this type of algorithms due to that such algorithms can be better to solve many issues in an effective way. To provide fast and accurate solutions to huge range of complex issues is one main benefit metaheuristic algorithms. Some metaheuristic algorithms are effectively used to classify the problems and BAT Algorithm (BA) is one of them ...
Source: Sensors - December 5, 2022 Category: Biotechnology Authors: Waqar Younas Gauhar Ali Naveed Ahmad Qamar Abbas Muhammad Talha Masood Asim Munir Mohammed ElAffendi Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9380: A Survey of 3D Indoor Localization Systems and Technologies
oulos Indoor localization has recently and significantly attracted the interest of the research community mainly due to the fact that Global Navigation Satellite Systems (GNSSs) typically fail in indoor environments. In the last couple of decades, there have been several works reported in the literature that attempt to tackle the indoor localization problem. However, most of this work is focused solely on two-dimensional (2D) localization, while very few papers consider three dimensions (3D). There is also a noticeable lack of survey papers focusing on 3D indoor localization; hence, in this paper, we aim to carry out a...
Source: Sensors - December 1, 2022 Category: Biotechnology Authors: Andrey Sesyuk Stelios Ioannou Marios Raspopoulos Tags: Review Source Type: research

Sensors, Vol. 22, Pages 9337: Application of Combined Local and Global Optimization Algorithms in Joint Interpretation of Direct Current Resistivity and Seismic Refraction Data: A Case Study of Dammam Dome, Eastern Saudi Arabia
This study not only demonstrates the capability of using the combined local and global optimization multi-objectives techniques to estimate model parameters of large datasets (i.e., 2D DCR and SR data), but also provides high-resolution subsurface images that can be used to study structural features of the Dammam Dome.
Source: Sensors - November 30, 2022 Category: Biotechnology Authors: Paul Edigbue Ismail Demirci Irfan Akca Hamdan Hamdan Panagiotis Kirmizakis Pantelis Soupios Markos Tranos Isra S. Abu-Mahfouz Emin Candansayar Sherif Hanafy Abdullatif Al-Shuhail Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9306: Low-Complexity Hyperbolic Embedding Schemes for Temporal Complex Networks
juan Shen Hyperbolic embedding can effectively preserve the property of complex networks. Though some state-of-the-art hyperbolic node embedding approaches are proposed, most of them are still not well suited for the dynamic evolution process of temporal complex networks. The complexities of the adaptability and embedding update to the scale of complex networks with moderate variation are still challenging problems. To tackle the challenges, we propose hyperbolic embedding schemes for the temporal complex network within two dynamic evolution processes. First, we propose a low-complexity hyperbolic embedding scheme by u...
Source: Sensors - November 29, 2022 Category: Biotechnology Authors: Hao Jiang Lixia Li Yuanyuan Zeng Jiajun Fan Lijuan Shen Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9304: An Efficient Multi-Dimensional Resource Allocation Mechanism for Beam-Hopping in LEO Satellite Network
glong Jiang Low Earth Orbit (LEO) satellite communication networks have become an important means to provide internet access services for areas with limited infrastructure. Compared with the Geostationary Earth Orbit (GEO) satellites, the LEO satellites have limited on-board communication caching and calculating resources. Furthermore, the distribution of traffic requests is dynamically changing and uneven due to the relative movement between the LEO satellites and the ground. Therefore, how to schedule the multi-dimensional resources is an important issue for the LEO satellite communication networks. Beam-hopping is a...
Source: Sensors - November 29, 2022 Category: Biotechnology Authors: Shengjun Guo Kai Han Wenbin Gong Lu Li Feng Tian Xinglong Jiang Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9278: Digital Biomarkers of Gait and Balance in Diabetic Foot, Measurable by Wearable Inertial Measurement Units: A Mini Review
Lawrence A. Lavery People with diabetic foot frequently exhibit gait and balance dysfunction. Recent advances in wearable inertial measurement units (IMUs) enable to assess some of the gait and balance dysfunction associated with diabetic foot (i.e., digital biomarkers of gait and balance). However, there is no review to inform digital biomarkers of gait and balance dysfunction related to diabetic foot, measurable by wearable IMUs (e.g., what gait and balance parameters can wearable IMUs collect? Are the measurements repeatable?). Accordingly, we conducted a web-based, mini review using PubMed. Our search was limited...
Source: Sensors - November 29, 2022 Category: Biotechnology Authors: Gu Eon Kang Angeloh Stout Ke ’Vaughn Waldon Seungmin Kang Amanda L. Killeen Peter A. Crisologo Michael Siah Daniel Jupiter Bijan Najafi Ashkan Vaziri Lawrence A. Lavery Tags: Review Source Type: research

Sensors, Vol. 22, Pages 9227: Electromagnetic Spectrum Allocation Method for Multi-Service Irregular Frequency-Using Devices in the Space & ndash;Air & ndash;Ground Integrated Network
Sensors, Vol. 22, Pages 9227: Electromagnetic Spectrum Allocation Method for Multi-Service Irregular Frequency-Using Devices in the Space–Air–Ground Integrated Network Sensors doi: 10.3390/s22239227 Authors: Yongchao Meng Peihan Qi Qian Lei Zhengyu Zhang Jinyang Ren Xiaoyu Zhou The management and allocation of electromagnetic spectrum resources is the inner driving force of the construction of the space–air–ground integrated network. Existing spectrum allocation methods are difficult to adapt to the scenario where the working bandwidth of multi-service frequ...
Source: Sensors - November 27, 2022 Category: Biotechnology Authors: Yongchao Meng Peihan Qi Qian Lei Zhengyu Zhang Jinyang Ren Xiaoyu Zhou Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9203: A Sampling-Based Algorithm with the Metropolis Acceptance Criterion for Robot Motion Planning
Fei Li Motion planning is one of the important research topics of robotics. As an improvement of Rapidly exploring Random Tree (RRT), the RRT* motion planning algorithm is widely used because of its asymptotic optimality. However, the running time of RRT* increases rapidly with the number of potential path vertices, resulting in slow convergence or even an inability to converge, which seriously reduces the performance and practical value of RRT*. To solve this issue, this paper proposes a two-phase motion planning algorithm named Metropolis RRT* (M-RRT*) based on the Metropolis acceptance criterion. First, to effici...
Source: Sensors - November 26, 2022 Category: Biotechnology Authors: Yiyang Liu Yang Zhao Shuaihua Yan Chunhe Song Fei Li Tags: Article Source Type: research

Sensors, Vol. 22, Pages 9150: A Mechanism-Based Automatic Fault Diagnosis Method for Gearboxes
ngjun Gao Convenient and fast fault diagnosis is the key to improving the service safety and maintenance efficiency of gearboxes. However, the environment and working conditions under complex service conditions are variable, and there is a lack of fault samples in engineering applications. These factors lead to difficulties in intelligent diagnosis methods based on machine learning, while traditional mechanism-based fault diagnosis requires high expertise and long time periods for the manual analysis of data. For the requirements of diagnostic convenience, an automatic fault diagnosis method for gearboxes is proposed i...
Source: Sensors - November 25, 2022 Category: Biotechnology Authors: Lei Xu Tiantian Wang Jingsong Xie Jinsong Yang Guangjun Gao Tags: Article Source Type: research