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50th Euromicro conference on Software Engineering and advanced applications

作者： Vierhauser, Michael Meixner, Kristof Biffl, Stefan Univ Innsbruck Dept Comp Sci Innsbruck Austria TU Wien CDL SQI Vienna Austria TU Wien Inst Informat Syst Engn Vienna Austria CDP Vienna Austria

ISBN: (纸本)9798350380279;9798350380262

Testing and validating Cyber-Physical systems (CPSs) in the aerospace domain, such as field testing of drone rescue missions, poses challenges due to volatile mission environments, such as weather conditions. While testing processes and methodologies are well established, structured guidance and execution support for field tests are still weak. This paper identifies requirements for field testing of drone missions and introduces the Field Testing Scenario Management (FiTS) approach for adaptive field testing guidance. FiTS aims to provide sufficient guidance for field testers as a foundation for efficient data collection to facilitate quality assurance and iterative improvement of field tests and CPSs. FiTS shall leverage concepts from scenario-based requirements engineering and Behavior-Driven Development to define structured and reusable test scenarios, with dedicated tasks and responsibilities for role-specific guidance. We evaluate FiTS by (i) applying it to three use cases for a search-and-rescue drone application to demonstrate feasibility and (ii) interviews with three experienced drone developers to assess its usefulness and collect further requirements. The study results indicate FiTS to be feasible and useful to facilitate drone field testing and data analysis.

关键词： Cyber-Physical systems small Uncrewed Aerial systems UAV Behavior-Driven Development

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A Triboelectric Nanogenerator-Based Wide Range Self-Powered Flexible Pressure sensor

IEEE Journal on Flexible Electronics

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IEEE Journal on Flexible Electronics 2024年第4期3卷 151-158页

作者： Min, Guanbo Khandelwal, Gaurav Chirila, Radu Dahiya, Abhishek Singh Mulvihill, Daniel M. Dahiya, Ravinder S. Group GlasgowG12 8QQ United Kingdom Research Institute of Medical and Biological Engineering Medical School Ningbo University Ningbo315211 China University of Glasgow James Watt School of Engineering GlasgowG12 8QQ United Kingdom University of Glasgow Materials and Manufacturing Research Group GlasgowG12 8QQ United Kingdom

Self-powered flexible pressure sensors are needed in applications such as human-machine interaction. Here, we present a triboelectric nanogenerator (TENG)-based self-powered flexible pressure sensor capable of operating over a wide range of pressures (3.2-1176 kPa). The sensor exhibits excellent sensitivities in various regions of the pressure range, i.e., 3.16, 0.023, and 0.031 V/kPa in the low (1-10 kPa), medium-high (10-500 kPa) and ultrahigh (>500 kPa) pressure regimes respectively. Stable and repeatable TENG responses are achieved for all three pressure regimes, and this is due to the way the real contact area at the TENG interface varies with contact pressure. These results highlight the potential for TENGs in a wide range of applications such as: detecting pressure in wearable devices, human-machine interface, and biomedical and automotive applications. As a proof-of-concept, we have demonstrated the use of the presented device in applications such as the detection of human and robot finger tapping, collection of human gait information, and detection of impact forces. © 2022 IEEE.

关键词： Pressure sensors

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Specialized x-Band LNA Design for SAR applications 25

Specialized X-Band LNA Design for SAR Applications

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25th International conference on Electromagnetics in advanced applications, ICEAA 2024

作者： Mutlu, Emine Sude Sisman, Ismail Ergin, Tugba Haykir Yeditepe University Istanbul Turkey Profen Communication Technologies Istanbul Turkey

ISBN: (纸本)9798350360974

Synthetic Aperture Radar (SAR) utilizes the principle of radar waves reflecting off surfaces to obtain high-resolution images. SAR is typically employed by radar systems mounted on platforms such as satellites, aircraft, or unmanned aerial vehicles. Especially in military applications, SAR is utilized for tasks like enemy detection and target identification by providing high-resolution images [1,2]. Working in the x-band is important for SAR because the x-band provides a suitable frequency range for obtaining high-resolution images. x-band frequencies are commonly used in high-resolution radar systems because this frequency range allows radar waves to reflect smaller details from objects, enabling the capture of more precise images. Therefore, SAR systems operating in the x-band are preferred for obtaining detailed and high-resolution images. In this context, the design of the LNA used in SAR systems operating in the x-band plays a significant role in improving the system's sensitivity and enhancing the quality of high-resolution images [3]. © 2024 IEEE.

关键词： Synthetic aperture radar

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Objective Evaluation of Sleep Disturbances in Older Adults with Cognitive Impairment Using a Bed sensor System and Self-Organizing Map Analysis 13

Objective Evaluation of Sleep Disturbances in Older Adults w...

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13th International conference on Data Science, Technology and applications, DATA 2024

作者： Kamimura, Tomoko Otsuka, Risa Domoto, Asaka Suzuki, Hikofumi Tokita, Mamino Department of Health Sciences Graduate School of Medicine Shinshu University 3-1-1 Asahi Matsumoto Japan Department of Cyber Science Infrastructure Development National Institute of Informatics Tokyo Japan Department of Global Centre for Advanced Research on Logic and Sensibility Keio University Tokyo Japan

ISBN: (纸本)9789897587078

Bed sensor systems are useful for measuring sleep states in cognitively impaired older adults because they can measure unrestrained individuals. However, there are no criteria for identifying sleep abnormalities using them. We developed a method to determine sleep abnormalities by analysing data collected by a bed sensor system using a self-organizing map (SOM). In this study, the sleep states were measured in two cognitively impaired care-facility residents. These recordings were used to calculate total nocturnal sleep time, wake time after sleep onset, frequency of leaving the bed, and frequency of awakening in the bed for each day. The data from these four variables were used to draw an SOM for each individual’s sleep state to identify normal or abnormal sleep days. We visually determined whether a main cluster was formed in the SOM. If a main cluster was formed, the days included in the main cluster were defined as the individual's normal days, while other days were defined as the individual's abnormal days. The above parameters were independently compared between the two groups, as determined by the SOM. The characteristics of abnormal sleep days identified by SOM could be explained using these four variables, suggesting the effectiveness of identifying abnormal days by SOM. © 2024 by SCITEPRESS – Science and Technology Publications, Lda.

关键词： Sleep research

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Low-Cost Bionic Microstructure-Based Flexible Piezoresistive sensors for Human Signal Detection

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advanced MATERIALS TECHNOLOGIES 2025年

作者： Zhang, Yingying Gao, Leyi Luo, Kejia Yang, Yun xue, Shuping Zhang, Jing Lyuliang Univ Dept Resource & Mech Engn Lvliang 033001 Peoples R China

Various microstructure designs are frequently employed to optimize flexible sensor performance. However, the replication process of microstructures is complex, the required equipment is costly, and the production costs remain relatively high. In this study, A method involving multiple coatings of a mixed carbon solution is employed to replicate the microstructure of the leaf surface. Flexible piezoresistive sensors with microstructures resembling those of corn husks, lucky bamboo leaves, and cattail leaves are fabricated. The fabrication process is straightforward, and the production cost is low. Morphological observations and performance testing reveal that the flexible piezoresistive sensor with the corn husk-like microstructure exhibits the best sensing performance: a sensitivity of 0.0128 kPa-1 in the pressure range of 0-18 kPa. The response and recovery times are 151 +/- 12 ms and 196 +/- 28 ms, respectively, with a pressure range of 0-178 kPa, stability over 10, 000 loading-unloading cycles and a hysteresis error of 8.05%. The fabricated flexible piezoresistive sensors can be utilized to detect human body signals such as frowning, finger bending, and foot pressure. These sensors hold potential for applications in fields such as motion monitoring, healthcare, and flexible robotic systems.

关键词： bionic microstructure flexible piezoresistive sensor graphene multi-walled carbon nanotubes (MWCNTs)

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Using context to adapt to sensor drift

Using context to adapt to sensor drift

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IEEE International conference on Development and Learning (ICDL)

作者： Warner, Jamieson Devaraj, Ashwin Miikkulainen, Risto Univ Texas Austin Dept Neurosci Austin TX 78712 USA Univ Texas Austin Dept Comp Sci Austin TX 78712 USA

ISBN: (纸本)9798350348569;9798350348552

Lifelong development allows animals and machines to adapt to changes in the environment as well as in their own systems, such as wear and tear in sensors and actuators. An important use case of such adaptation is industrial odor-sensing. Metal-oxide-based sensors can be used to detect gaseous compounds in the air;however, the gases interact with the sensors, causing their responses to change over time in a process called sensor drift. sensor drift is irreversible and requires frequent recalibration with additional data. This paper demonstrates that an adaptive system that represents the drift as context for the skill of odor sensing achieves the same goal automatically. After it is trained on the history of changes, a neural network predicts future contexts, allowing the context+skill sensing system to adapt to sensor drift. Evaluated on an industrial dataset of gas-sensor drift, the approach performed better than standard drift-naive and ensembling methods. In this way, the context+skill system emulates the natural ability of animal olfaction systems to adapt to a changing world, and demonstrates how it can be effective in real-world applications.

关键词： classification olfaction drift adaptation LSTM

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Application of Wireless sensor Technology in Urban Energy Management 24

Application of Wireless Sensor Technology in Urban Energy Ma...

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8th International conference on Electronic Information Technology and Computer Engineering, EITCE 2024

作者： Zhang, Yajuan Chen, Jie Gong, Zhijia College of Information Engineering Hainan Vocational University of Science and Technology Hainan Haikou China

ISBN: (纸本)9798400710094

The rapid growth of urbanization has led to an increasing need for efficient energy management systems to optimize energy consumption and reduce environmental impacts. Wireless sensor technology emerges as a pivotal solution, providing advanced capabilities in real-time monitoring, control, and management of urban energy systems. This paper explores the practical applications of wireless sensor networks (WSN) in urban energy management, highlighting their role in smart grids, intelligent building systems, smart street lighting, public transportation, water management, and renewable energy integration. Additionally, it addresses the prominent challenges such as data security, sensor durability, network scalability, data management, energy consumption, and infrastructure integration. [1-2] The paper further discusses optimization pathways to enhance the effectiveness and sustainability of WSNs in urban energy management. By overcoming these challenges and leveraging the potential of wireless sensor technology, cities can achieve significant energy savings, operational efficiencies, and contribute to broader environmental sustainability goals. © 2024 Copyright held by the owner/author(s).

关键词： Green buildings

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Characterization of the Beam and the Aperture of the Onsala Twin Telescopes 25

Characterization of the Beam and the Aperture of the Onsala ...

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24th International conference on Electromagnetics in advanced applications (ICEAA) / 12th IEEE-APS Topical conference on Antennas and Propagation in Wireless Communications (IEEE APWC)

作者： Hovey, G. Mugundhan, V Haas, R. Le Bail, K. Conway, J. Onsala Space Observ Dept Space Earth & Environm Observ Vagen 90 Onsala Sweden

ISBN: (纸本)9798350320589

Very Long Baseline Interferometry (VLBI) was originally developed to perform high angular resolution radio imaging, but it has also proven useful in geodesy. VLBI has played a key role in defining the International Celestial Reference Frame (ICRF), providing measurements of the Earth Orientation Parameters (EOP), and contributing to the International Terrestrial Reference Frame (ITRF) [1]. The legacy S/x VLBI systems have achieved positional accuracies of up to 5 mm. © 2023 IEEE.

关键词： Legacy systems

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A Comprehensive Comparison of IoT Soil Moisture sensors for Agricultural applications 17

A Comprehensive Comparison of IoT Soil Moisture Sensors for ...

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17th Dallas Circuits and systems conference (DCAS)

作者： Grant, Spencer Harden, Alex Coggins, Kaleb Parker, David Tabei, Fatemehsadat Askarian, Behnam West Texas A&M Univ Coll Engn Canyon TX 79016 USA

ISBN: (纸本)9798350349535;9798350349542

Precision agriculture depends on precise and timely information to enhance resource utilization and increase crop production. This paper conducts an in-depth analysis of four different soil sensors, each employing unique sensing technologies: the Zigbee Soil sensor, True TDR-315H, ESP32 Capacitive Soil sensor, and ComWinTop Soil Moisture sensor. The objective is to assess and contrast their performance in delivering accurate data, consistency, and capabilities for immediate monitoring. By integrating accurate and immediate data, precision agriculture can make informed decisions to improve resource management and crop yields. The focus of this analysis is to offer a thorough review of these soil sensors, evaluating their effectiveness in real-time monitoring, precision of data, and dependability in agricultural settings. Upon examination of the specified sensors, the True TDR-315H emerged as the most accurate, with the ComWinTop sensor closely following. When using the TDR-315H as a standard for comparison in this research, the ComWinTop's accuracy was found to be around 90%. Additionally, the ComWinTop is significantly more cost-effective than the TDR-315H, being 60% cheaper, thereby offering a more viable solution for a wide range of soil moisture monitoring applications.

关键词： Precision agriculture soil sensor technology data accuracy real-time monitoring resource management

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advanced sensor systems and applications xIV

Advanced Sensor Systems and Applications XIV

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advanced sensor systems and applications xIV 2024

ISBN: (纸本)9781510682146

The proceedings contain 26 papers. The topics discussed include: identification of age markers from the structural features of Baltic amber using SERS;ultrasensitive fiber temperature sensor based on Fabry Perot interferometer and vernier effect;resonant optical gyroscopes based on low-coherence radiation sources;in-situ state characterization monitoring of 18650 lithium-ion batteries with high-rate charge and discharge based on the high-stability fiber-optic sensor;time delay estimation accuracy enhancement with envelope filtering in LFM-DAS;ring confocal cavity with gradient lens as sensitive element for the passive optical gyro;arrangement optimization of fiber Bragg grating temperature sensor network for wafer surface temperature field reconstruction with grey wolf optimization-kriging algorithm based on k-medoids;and a novel leakage sensing system of hydrogen transportation pipeline based on hybrid UWFBG array.

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