检索结果-内蒙古大学图书馆

A Multifunctional Hydrogel with Multimodal Self-Powered Sensing Capability and Stable Direct Current Output for Outdoor Plant Monitoring Systems

引用

Nano-Micro Letters 2025年第4期17卷 1-24页

作者： Xinge Guo Luwei Wang Zhenyang Jin Chengkuo Lee Department of Electrical&Computer Engineering National University of Singapore4 Engineering Drive 3Singapore 117576Singapore Center for Intelligent Sensors and MEMS(CISM) National University of Singapore5 Engineering Drive 1Singapore 117608Singapore NUS Graduate School-Integrative Sciences and Engineering Program(ISEP) National University of SingaporeSingapore 119077Singapore Research Center for Sustainable Urban Farming(SUrF) National University of SingaporeSingapore 117558Singapore

Smart farming with outdoor monitoring systems is critical to address food shortages and sustainability *** systems facilitate informed decisions that enhance efficiency in broader environmental *** outdoor systems equipped with energy harvesters and self-powered sensors often struggle with fluctuating energy sources,low durability under harsh conditions,non-transparent or non-biocompatible materials,and complex ***,a multifunctional hydrogel is developed,which can fulfill all the above requirements and build selfsustainable outdoor monitoring systems solely by *** can serve as a stable energy harvester that continuously generates direct current output with an average power density of 1.9 W m^(-3)for nearly 60 days of operation in normal environments(24℃,60%RH),with an energy density of around 1.36×10^(7)J m^(-3).It also shows good self-recoverability in severe environments(45℃,30%RH)in nearly 40 days of continuous ***,this hydrogel enables noninvasive and self-powered monitoring of leaf relative water content,providing critical data on evaluating plant health,previously obtainable only through invasive or high-power consumption *** potential extends to acting as other self-powered environmental *** multifunctional hydrogel enables self-sustainable outdoor systems with scalable and low-cost production,paving the way for future agriculture.

关键词： Self-powered sensor Hydrogel Energy harvester Outdoor farming Self-sustainable IoT

来源：评论

学校读者我要写书评

暂无评论

Navigation On Mobile Computing Devices with A Walking Using Object-Oriented Techniques to Communicate Stick 3

Navigation On Mobile Computing Devices with A Walking Using ...

引用

3rd International Conference on Communication, Control, and Intelligent Systems, CCIS 2024

作者： Ramesh Prabhakaran, R. Guhan, P. Raj, E George Dharma Prakash Karthika, K. Angel Maanu, P. Mizoram University Department of Computer Engineering Mizoram India Panimalar Engineering College Department of Electrical and Electronical Engineering Chennai India Bharathidasan University School of Computer Science and Engineering Trichy India Karpagam College of Engineering Department of Information Technology Coimbatore India Panimalar Engineering College Department of Computer Science and Engineering Chennai India

ISBN: (纸本)9798331528201

Moving around in their surroundings is challenging for elderly people and people with visual impairments. The majority of functional sticks in use today are not intelligent and lack an innate ability to recognize obstacles. In an effort to address this issue, mobility and orientation specialists who assist the blind by teaching them to move freely and safely using their remaining senses are brought in. They can navigate around obstacles with the aid of guidance dogs as well. These techniques have drawbacks, such as the dogs' inability to comprehend complicated instructions, the high cost of maintaining these trained dogs, and the need to hire an expert. In light of the aforementioned difficulties, the "Smart walking stick"has become a potential answer. The "Mobile based walking stick"is a useful mobility aid with the capacity to call a relative who can help in the event of an accident, detect obstacles above ground level and pits using ultrasonic sensors, recognize when a collision has occurred, and call the user's mobile phone if it has been misplaced to share the location's GPS for use with GSM connectivity and to share with the user's mention contacts. With some visually disabled people as test subjects, a test case was run, and 95% of the time it was successful. © 2024 IEEE.

关键词： Ultrasonic sensors

来源：评论

学校读者我要写书评

暂无评论

High Precision Carry-Look-Ahead Logic for Negation, Absolute Value, and Two's Complement 30

High Precision Carry-Look-Ahead Logic for Negation, Absolute...

引用

30th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2023

作者： Jackson, Riley Phillips, Maxwell Hassan, Firas Ammar, Ahmed Ohio Northern University Department of Electrical and Computer Engineering and Computer Science AdaOH United States

ISBN: (纸本)9798350326499

This paper presents a novel paradigm, based on carry-look-ahead principles, for finding the negation of a high-precision binary integer represented in two's complement, and also for converting a two's complement number to sign-and-magnitude (i.e., absolute value), and vice versa. Theoretical analysis of the proposed algorithm yields a logarithmic bound on delay with increasing input size n. Implementation results of the proposed hardware show linear growth in complexity. The linear growth for lookup tables is also small: around 1.1n for the hardware alone and less than 2n for the hardware with a serial transceiver after n=512, due to overhead. Flip-flop usage grows similarly. The proposed hardware has a delay of 2.254 ns or less for all three aforementioned operations. © 2023 IEEE.

关键词： Table lookup

来源：评论

学校读者我要写书评

暂无评论

Fuzzing for Power Grids: A Comparative Study of Existing Frameworks and a New Method for Detecting Silent Crashes in Control Devices

Fuzzing for Power Grids: A Comparative Study of Existing Fra...

引用

2023 IEEE Design Methodologies Conference, DMC 2023

作者： Uwibambe, Marie Louise Pan, Yanjun Li, Qinghua University of Arkansas Department of Electrical Engineering and Computer Science United States

ISBN: (纸本)9798350315547

Power grids serve as the backbone of modern society, supplying electricity for a wide range of critical uses, including the residential, commercial, and industrial sectors. As the power grid infrastructure becomes more reliant on networked digital technologies, it also becomes more vulnerable to cyberattacks. To ensure the resilience and security of the power grid, it is necessary to identify security vulnerabilities in power electronic devices. Fuzzing is an effective technique for detecting security flaws in software/firmware by subjecting the system under test to a series of unexpected inputs, which elicits unexpected behavior such as system crashes. While some work has been done on fuzzing power grid systems, there still lacks a comprehensive, comparative study of existing solutions. Furthermore, new methods are still needed to detect unexpected behaviors of power electronic devices during fuzzing. In this paper, we first conduct a survey and a comparative study of existing fuzzing frameworks for power grid systems. We then hypothesize and verify the use of electromagnetic waves as a method to detect silent system crashes in power electronic devices, aiming to advance fuzzing in this field. © 2023 IEEE.

关键词： Electromagnetic waves

来源：评论

学校读者我要写书评

暂无评论

Manifold Optimization for Data Driven Reduced-Order Modeling∗ 59

Manifold Optimization for Data Driven Reduced-Order Modeling...

引用

59th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2023

作者： Newton, Rachel Du, Zhe Balzano, Laura Seiler, Peter University of Michigan Department of Electrical Engineering and Computer Science United States

ISBN: (纸本)9798350328141

The focus of this paper is on data-driven reduced-order modeling. We assume a high fidelity, discrete-time model is available for simulation. The simulator allows state and output trajectories to be collected for any specified initial condition and input signal. An optimal reduced-order model (ROM) requires: (i) the selection of a lower dimensional subspace for the state of the ROM, and (ii) an optimal reduced-order state-space model (evolving on the lower dimensional subspace). A common heuristic is to: (i) select the lower-order subspace using proper orthogonal decomposition (POD), and (ii) use least-squares to fit the reduced-order state-space model on the POD subspace. We demonstrate the potential deficiencies of this heuristic via two simple examples. In order to address these deficiencies, we propose a novel method to optimize the choice of subspace using the Grassmann manifold. Finally, we show that our proposed manifold optimization empirically outperforms the POD heuristic on the two motivating examples and a planar wind farm model. © 2023 IEEE.

关键词： Optimization

来源：评论

学校读者我要写书评

暂无评论

Auto-Correlation Properties of Binary Sequences Obtained by Switching Two Bernoulli Chaotic Binary Sequences 14

Auto-Correlation Properties of Binary Sequences Obtained by ...

引用

14th International Conference on Information and Communication Technology Convergence, ICTC 2023

作者： Tsuneda, Akio Fujikawa, Masahiro Kumamoto University Department of Computer Science and Electrical Engineering Kumamoto Japan

ISBN: (纸本)9798350313277

In Monte-Carlo simulations, various types of random numbers are necessary for simulating various kinds of stochastic phenomena. Using one-dimensional chaotic maps, we can design statistical properties of the chaotic sequences, which implies that chaotic sequences may be useful for Monte-Carlo methods. In this paper, we examine auto-correlation properties of binary sequences obtained by switching two chaotic binary sequences generated by Bernoulli map. It is shown that binary sequences with various new types of auto-correlation properties can be generated. © 2023 IEEE.

关键词： Auto-correlation function Bernoulli map chaotic binary sequence

来源：评论

学校读者我要写书评

暂无评论

Analysis of a Synthesized Slot Permanent Magnet Flux Reversal Motor 3

Analysis of a Synthesized Slot Permanent Magnet Flux Reversa...

引用

3rd International Conference on electrical Machines and Drives, ICEMD 2023

作者： Sarshar, Mohammad Reza Kondelaji, Mohammad Amin Jalali Mirsalim, Mojtaba Department of Electrical Engineering Tehran Iran Department of Electrical Engineering and Computer Science CambridgeMA United States

ISBN: (纸本)9798350393743

This paper presents a comparison of three stator-permanent magnet (PM) motors, each with a different PM arrangement on the stator. These arrangements include tangential, radial, and tangential-radial directions of magnetization for the PMs, which results in three main structures. The first and main motor structure contains two sets of PMs with tangential and radial magnetization directions, which introduces a new synthesized slot-PM flux reversal motor. The other two motors have only one PM arrangement (either tangential or radial). The simulation results under no-load and full-load states are derived with finite element method, which show that the dual-PM motor structure has higher torque density and smaller torque ripple compared to the other two motors. Additionally, all proposed topologies have demonstrated a robust overload capability with no significant drop in the torque-current curve. © 2023 IEEE.

关键词： Permanent magnets

来源：评论

学校读者我要写书评

暂无评论

A Conditional GAN and Dual-Channel Hybrid Deep Feature Framework for Robust Sensor Fault Detection in WSNs

A Conditional GAN and Dual-Channel Hybrid Deep Feature Frame...

引用

2025 International Conference on Electronics, Information, and Communication, ICEIC 2025

作者： Khan, Rehan Saeed, Umer Koo, Insoo University of Ulsan Department of Electrical Electronic and Computer Engineering Ulsan Korea Republic of School of Computer Science and Technology University of Bedfordshire Luton United Kingdom

ISBN: (纸本)9798331510756

Sensor-generated data is vital to the operation of numerous systems and services in the rapidly growing field of the Internet of Things. Wireless Sensor Networks, as an essential setup for these systems, are frequently deployed in large, diverse, and often harsh environments. However, these networks are highly vulnerable to various faults, potentially leading to improper data transmission, reliability, and financial stability of the systems. To address these challenges, we propose a hybrid model for sensor fault detection that integrates a machine learning classifier with the deep learning (DL) model, specifically VGG-16 and ResNet-50. Synthetic samples are generated using a Conditional Generative Adversarial Network and common sensor faults, such as hardover, drift, spike, erratic, and stuck fault are introduced by leveraging a publicly available temperature sensor dataset. Time-series data is transformed into Gramian Angular Field images, from which deep features are extracted using VGG-16 and ResNet-50. These extracted features are then fused to form a hybrid feature pool. Our framework effectively addresses problems related to data imbalance and enhances accuracy. The proposed model outperforms the individual feature sets, VGG-16 (89.22%) and ResNet-50 (84.21%), achieving notable accuracy of 92.55% with the fused feature set, underscoring its potential for robust sensor fault detection. © 2025 IEEE.

关键词： Gallium nitride

来源：评论

学校读者我要写书评

暂无评论

Extended Pulsation Attack Against Kalman Filter Driven BLDC Motor Control System 13

Extended Pulsation Attack Against Kalman Filter Driven BLDC ...

引用

13th International Conference on Advanced computer Information Technologies, ACIT 2023

作者： Boiko, Yuri Kiringa, Iluju Yeap, Tet University of Ottawa Electrical Engineering and Computer Science Department OttawaON Canada

The extended version of the induced pulsation attackis introduced through modeling and simulation, targeting a closed-loop-controlled architecture of a Brushless DC (BLDC) motor driven by a Kalman filter. Previously, the induced pulsations in the attack were created by a constant gradient linear function of the distortion coefficient employed by the attacker. In the updated version, the attack persists even when interruptions are introduced to the linear growth of the distortion function, followed by resetting it. The objective of the presented study isto assess the potential for enhancing the attack's effectiveness through this modification. The resulted findings confirm thattransforming the constant gradient linear function into a saw-tooth pattern leads to periodic repetitions of induced pulsations. Consequently, the attack can be extended indefinitely. Moreover,the attacker gains greater control over attack outcome by utilizing additional parameters introduced through the saw-like functionality, such as frequency and amplitude of saw-function. The study demonstrates two advantageous synchroniza-tion modes with the saw-function for the attacker: (1) modulatingcurrent, voltage, and angular speed in phase with the saw-function, providing a stronger attack but reduced covertness;(2) synchronizing current and voltage patterns with the first sub-harmonic of the saw-function while maintaining fundamental harmonic pace for angular speed modulation, resulting in improved covertness and consistent mechanical strains. Extended pulsation attack signatures collected in current, voltage, and angular speed domains aid in early detection through pattern recognition methods. © 2023 IEEE.

关键词： Controllers

来源：评论

学校读者我要写书评

暂无评论

Optimizing Service Placement in Edge-to-Cloud AR/VR Systems Using a Multi-Objective Genetic Algorithm 14

Optimizing Service Placement in Edge-to-Cloud AR/VR Systems ...

引用

14th International Conference on Cloud Computing and Services science, CLOSER 2024

作者： Herabad, Mohammadsadeq G. Taheri, Javid Ahmed, Bestoun S. Curescu, Calin Department of Mathematics and Computer Science Karlstad University Karlstad Sweden School of Electronics Electrical Engineering and Computer Science Queen’s University Belfast Belfast United Kingdom Department of Computer Science Faculty of Electrical Engineering Czech Technical University Prague Czech Republic Ericsson AB Stockholm Sweden

ISBN: (纸本)9789897587016

Augmented Reality (AR) and Virtual Reality (VR) systems involve computationally intensive image processing algorithms that can burden end-devices with limited resources, leading to poor performance in providing low latency services. Edge-to-cloud computing overcomes the limitations of end-devices by offloading their computations to nearby edge devices or remote cloud servers. Although this proves to be sufficient for many applications, optimal placement of latency sensitive AR/VR services in edge-to-cloud infrastructures (to provide desirable service response times and reliability) remain a formidable challenging. To address this challenge, this paper develops a Multi-Objective Genetic Algorithm (MOGA) to optimize the placement of AR/VR-based services in multi-tier edge-to-cloud environments. The primary objective of the proposed MOGA is to minimize the response time of all running services, while maximizing the reliability of the underlying system from both software and hardware perspectives. To evaluate its performance, we mathematically modeled all components and developed a tailor-made simulator to assess its effectiveness on various scales. MOGA was compared with several heuristics to prove that intuitive solutions, which are usually assumed sufficient, are not efficient enough for the stated problem. The experimental results indicated that MOGA can significantly reduce the response time of deployed services by an average of 67% on different scales, compared to other heuristic methods. MOGA also ensures reliability of the 97% infrastructure (hardware) and 95% services (software). © 2024 by SCITEPRESS – science and Technology Publications, Lda.

关键词： Augmented reality

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：