检索结果-内蒙古大学图书馆

A large-area bionic skin for high-temperature energy harvesting applications

Nano Research 2023年第7期16卷 10245-10255页

作者： Zhaojun Liu Bian Tian Yao Li Jiaming Lei Zhongkai Zhang Jiangjiang Liu Qijing Lin Chengkuo Lee Zhuangde Jiang State Key Laboratory for Mechanical Manufacturing Systems Engineering School of Mechanical EngineeringXi’an Jiaotong UniversityXi’an 710049China Department of Electrical&Computer Engineering National University of SingaporeSingapore 117576Singapore Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai 265503China

For the large amount of waste heat wasted in daily life and industrial production,we propose a new type of flexible thermoelectric generators(F-TEGs)which can be used as a large area bionic skin to achieve energy harvesting of thermal *** reference to biological structures such as pinecone,succulent,and feathers,we have designed and fabricated a biomimetic flexible TEG that can be applied in a wide temperature range which has the highest temperature energy harvesting capability *** laminated free structure of the bionic F-TEG dramatically increases the efficiency and density of energy *** F-TEGs(single TEG only 101.2 mg in weight),without an additional heat sink,demonstrates the highest output voltage density of 286.1 mV/cm^(2)and the maximum power density is 66.5 mW/m^(2) at a temperature difference of nearly 1000℃.The flexible characteristics of F-TEGs make it possible to collect the diffused thermal energy by flexible attachment to the outer walls of high-temperature pipes and vessels of different diameters and *** work shows a new design and application concept for flexible thermal energy collectors,which fills the gap of flexible energy harvesting in high-temperature environment.

关键词： bionic structure high-temperature flexible thermoelectric generators(TEGs)

来源：评论

学校读者我要写书评

暂无评论

Controlled Islanding Strategy Considering Uncertainty of Renewable Energy Sources Based on Chance-constrained Model

引用

Journal of Modern Power systems and Clean Energy 2022年第2期10卷 471-481页

作者： Shengyuan Liu Tianhan Zhang Zhenzhi Lin Yilu Liu Yi Ding Li Yang the School of Electrical Engineering Zhejiang UniversityHangzhou 310027China the Department of Electrical Engineering and Computer Science University of TennesseeKnoxvilleTN 37996USA the School of Electrical Engineering Shandong UniversityJinan 250061China Electrical and Electronics Systems Research Division Oak Ridge National LaboratoryOak RidgeTN 37830USA

Controlled islanding plays an essential role in preventing the blackout of power *** there are several studies on this topic in the past,no enough attention is paid to the uncertainty brought by renewable energy sources(RESs)that may cause unpredictable unbalanced power and the observabilit>T of power systems after islanding that is essential for back-up black-start ***,a novel controlled islanding model based on mixed-integer second-order cone and chance-constrained programming(MISOCCP)is proposed to address these ***,the uncertainty of RESs is characterized by their possibility distribution models with chance constraints,and the requirements,e.g.,system observability,for rapid back-up black-start measures are also ***,a law of large numbers(LLN)based method is em-ployed for converting the chance constraints into deterministic ones and reformulating the non-convex model into convex ***,case studies on the revised IEEE 39-bus and 118-bus power systems as well as the comparisons among different models are given to demonstrate the effectiveness of the proposed *** results show that the proposed model can result in less unbalanced power and better observability after islanding compared with other models.

关键词： Controlled islanding second-order cone chance-constrained programming renewable energy source(RES) black-start observability.

来源：评论

学校读者我要写书评

暂无评论

Chip-scale spontaneous quasi-phase matched second harmonic generation in a micro-racetrack resonator

引用

Science China(physics,Mechanics & Astronomy) 2023年第8期66卷 66-74页

作者： Tingge Yuan Jiangwei Wu Yi'an Liu Xiongshuo Yan Haowei Jiang Hao Li Zhaokang Liang Qiang Lin Yuping Chen Xianfeng Chen State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and Astronomy.Shanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal UniversityJinan 250358China Department of Electrical and Computer Engineering University of RochesterNew York 14627USA

In this paper,we demonstrate efficient spontaneous quasi-phase matched(SQPM)second harmonic generation(SHG)in a microracetrack resonator on X-cut thin film lithium *** approach does not involve poling,but exploits the anisotropy of the crystals to allow the phase-matching condition to be fulfilled spontaneously as the TE-polarized light circulates in a specifically designed racetrack *** experiment,normalized on-chip conversion efficiencies of 1.01×10-4/W and 0.43×10-4/W are achieved by 37th-order and 111th-order SQPM,*** configurable SQPM will benefit the application of nonlinear frequency conversion and quantum source generation in chip-scale integrated photonics compatible with standard CMOS fabrication processes.

关键词： lithium niobate on insulator quasi-phase matching second harmonic generation

来源：评论

学校读者我要写书评

暂无评论

BitMoD: Bit-serial Mixture-of-Datatype LLM Acceleration 31

BitMoD: Bit-serial Mixture-of-Datatype LLM Acceleration

引用

31st IEEE International Symposium on High Performance computer Architecture, HPCA 2025

作者： Chen, Yuzong Abouelhamayed, Ahmed F. Dai, Xilai Wang, Yang Andronic, Marta Constantinides, George A. Abdelfattah, Mohamed S. Cornell University Computer Systems Lab United States Systems and Networking Research Group Microsoft Research United States Imperial College London Department of Electrical and Electronic Engineering United Kingdom

ISBN: (纸本)9798331506476

Large language models (LLMs) have demonstrated remarkable performance across various machine learning tasks. Yet the substantial memory footprint of LLMs significantly hinders their deployment. In this paper, we improve the accessibility of LLMs through BitMoD1, an algorithm-hardware co-design solution that enables efficient LLM acceleration at low weight precision. On the algorithm side, BitMoD introduces fine-grained data type adaptation that uses a different numerical data type to quantize a group of (e.g., 128) weights. Through the careful design of these new data types, BitMoD is able to quantize LLM weights to very low precision (e.g., 4 bits and 3 bits) while maintaining high accuracy. On the hardware side, BitMoD employs a bitserial processing element to easily support multiple numerical precisions and data types;our hardware design includes two key innovations: First, it employs a unified representation to process different weight data types, thus reducing the hardware cost. Second, it adopts a bit-serial dequantization unit to rescale the per-group partial sum with minimal hardware overhead. Our evaluation on six representative LLMs demonstrates that BitMoD significantly outperforms state-of-the-art LLM quantization and acceleration methods. For discriminative tasks, BitMoD can quantize LLM weights to 4 -bit with © 2025 IEEE.

关键词： Integrated circuit design

来源：评论

学校读者我要写书评

暂无评论

Frequency Dependent RSSI Behavior of Rotating Polarization Waves in Diverse Environmental Conditions 13

Frequency Dependent RSSI Behavior of Rotating Polarization W...

引用

13th IEEE International Conference on Communication, Networks and Satellite, COMNETSAT 2024

作者： Ali, Muhammad Moazzam Hashim, Shaiful Jahari Ahmad, Zaid Ferré, Guillaume Rokhani, Fakhrul Zaman Chaudhary, Muhammad Akmal Universiti of Putra Malaysia Department of Computer and Communication Systems Engineering Malaysia Inspem Universiti of Putra Malaysia Department of Computer and Communication Systems Engineering Malaysia Islamabad Pakistan Univ. Bordeaux Cnrs Bordeaux Inp Ims Umr 5218 TalenceF-33400 France Ajman University Department of Electrical and Computer Engineering Ajman346 United Arab Emirates

ISBN: (纸本)9798350368086

This study examines the effectiveness of Rotating Polarization Waves (RPW) in Low Power Wide Area Networks (LPWAN) under various frequencies and environmental conditions. MATLAB simulations quantified the Received Signal Strength Indicator (RSSI) across frequencies of 169 MHz, 433 MHz, 868 MHz, 915 MHz, and 2.4 GHz, and 2.4 GHz, covering distances from 10 to 10,000 meters in both rural and urban settings. The simulations incorporated transmitter power, antenna gains, system losses, and polarization mismatch loss, employing tailored path loss exponents for each scenario. The findings indicated that lower frequencies yielded enhanced coverage and a more robust RSSI, particularly in rural regions where signal propagation faced fewer obstructions. In urban environments, the received signal strength indicator showed a more pronounced decrease with distance, influenced by barriers such as buildings. Graphical representations of RSSI versus distance and frequency illustrated the variations in propagation, affirming that lower frequencies exhibit superior performance in both environments. The findings provide important insights for enhancing LPWAN deployment, highlighting the significance of frequency selection and environmental factors to achieve better coverage and reliability. © 2024 IEEE.

关键词： MATLAB

来源：评论

学校读者我要写书评

暂无评论

Progressive Optimization of Deep Learning-Based Fight Detection Model

Progressive Optimization of Deep Learning-Based Fight Detect...

引用

2024 IEEE International Workshop on Technologies for Defense and Security, TechDefense 2024

作者： Mukhamediya, Azamat Zhumabek, Tilek Nazarbayev University School of Engineering and Digital Sciences Department of Electrical and Computer Engineering Astana010000 Kazakhstan Nazarbayev University School of Sciences and Humanities Department of Physics Astana010000 Kazakhstan

ISBN: (纸本)9798331505585

Building a fight detection system is essential to enhance public safety and develop automated security surveillance systems. Given the success of deep learning-based models in computer vision and pattern recognition, it is common to use deep convolutional and recurrent neural networks to accurately predict fight scenes. However, the required computational resources hinder the use of these models in memory-limited devices. In this work, we aim to obtain the fight detection model that satisfies both memory constraints and accurate classification performance. First, we design a complex model and then reduce its complexity by leveraging a three-stage progressive model optimization strategy. As a result, we obtained accurate detection models, which are ∼ 2 and ∼ 5 times lighter compared to the starting complex model. The experiments are performed using two publicly available datasets, namely Hockey and Movie Fights. © 2024 IEEE.

关键词： Convolutional neural networks

来源：评论

学校读者我要写书评

暂无评论

Foundry Manufactured 6-bit Resolution, 150μm Long Slow-Light Electro-Optic Modulator for On-Chip Photonic Tensor Computing

Foundry Manufactured 6-bit Resolution, 150μm Long Slow-Ligh...

引用

2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Zhang, Meng Begović, Amir Yin, Dennis Gangi, Nicholas Gu, Jiaqi Huang, Rena Rensselaer Polytechnic Institute Department of Electrical Computer and Systems Engineering 110 8th Street TroyNY12180 United States Arizona State University School of Electrical Computer and Energy Engineering TempeAZ85281 United States

ISBN: (纸本)9781957171395

We demonstrate 6-bit DAC resolution with an ultra-compact slow-light electro-optic modulator. The 10× modulation length reduction enables 31× compute density, 1.17× energy efficiency, and 36.1× energy efficiency per unit area for photonic tensor computing. © Optica Publishing Group 2024 © 2024 The Author(s)

关键词： Light modulation

来源：评论

学校读者我要写书评

暂无评论

A Novel Rotor Position Synchronization Method for Central Converter Multi-Machine Drives 4

A Novel Rotor Position Synchronization Method for Central Co...

引用

4th International Conference on electrical, computer, Communications and Mechatronics engineering, ICECCME 2024

作者： De Andrade Lima, Claudio Cale, James State University Electrical and Computer Engineering Departament Colorado Fort Collins United States Colorado State University Systems Engineering Department Fort Collins United States

ISBN: (纸本)9798350391183

The aerospace industry is undergoing a paradigm shift towards More Electric Aircraft. Safe and reliable electromechanical drives are a key component of this transition. Previous research has shown a potential rotor position synchronization control for central-converter, multi-machine systems applied to aerospace actuators. This paper proposes a novel rotor position synchronization method referred to as the 'voltage-boost' method. The method is based on in-line induced voltages through compact split-core three-phase transformers and low-power auxiliary converters. The paper describes the principle of operation of the method along with practical installation advantages, such as a non-invasive deployment. Simulation results show that the method is capable of achieving position synchronization under different load torque distributions, maintaining reasonable position error, and achieving a fast response. Additionally, a real aerospace typical load profile is utilized to verify the method's robustness under realistic operating conditions. © 2024 IEEE.

关键词： Aerospace industry

来源：评论

学校读者我要写书评

暂无评论

Automated Warehouse 5G Infrastructure Modeling Using Variational Autoencoders

Automated Warehouse 5G Infrastructure Modeling Using Variati...

引用

2024 International Symposium on Networks, computers and Communications, ISNCC 2024

作者： Gulia, Rahul Ganguly, Amlan Kwasinski, Andres Kuhl, Michael E. Rashedi, Ehsan Hochgraf, Clark Rochester Institute of Technology Department of Computer Engineering RochesterNY United States Rochester Institute of Technology Department of Industrial and Systems Engineering RochesterNY United States Rochester Institute of Technology Department of Electrical and Computer Engineering Technology RochesterNY United States

ISBN: (纸本)9798350364910

The next decade is poised for a transformative shift in wireless communication technologies, driven by the increasing demand for data-intensive applications. Innovations in signal processing, network architecture estimation and design, and spectrum utilization will be critical in realizing the potential of 5G and beyond. These advancements will enable the seamless integration of emerging technologies and empower the digital transformation of industries and society. In this paper, we introduce a Variational Autoencoder (VAE) based model for indoor radio propagation modeling within an automated Industry4.0 warehouse or factory floor in the 5G wireless bands. We detail the creation of training data tensors, the architecture of our proposed VAE model, and its training using tensors that capture the impact of various interacting objects within a 5G-enabled smart warehouse infrastructure. The model is trained on multiple warehouse configurations to predict the signal-to-interference-plus-noise ratio (SINR) for both the validation dataset and unknown warehouse configurations. We present reconstruction error heatmaps to demonstrate the accuracy of our model and analyze its performance in different complex warehouse environments. © 2024 IEEE.

关键词： Signal to noise ratio

来源：评论

学校读者我要写书评

暂无评论

Equalizer Zero-Determinant Strategy in Discounted Repeated Stackelberg Asymmetric Game

引用

Journal of systems Science & Complexity 2024年第1期37卷 184-203页

作者： CHENG Zhaoyang CHEN Guanpu HONG Yiguang Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Electrical Engineering and Computer Science KTH Royal Institute of Technology10044 StockholmSweden. Department of Control Science and Engineering Tongji UniversityShanghai 201804China Shanghai Research Institute for Intelligent Autonomous Systems Tongji UniversityShanghai 210201China

This paper focuses on the performance of equalizer zero-determinant(ZD)strategies in discounted repeated Stackelberg asymmetric *** the leader-follower adversarial scenario,the strong Stackelberg equilibrium(SSE)deriving from the opponents’best response(BR),is technically the optimal strategy for the ***,computing an SSE strategy may be difficult since it needs to solve a mixed-integer program and has exponential complexity in the number of *** this end,the authors propose an equalizer ZD strategy,which can unilaterally restrict the opponent’s expected *** authors first study the existence of an equalizer ZD strategy with one-to-one situations,and analyze an upper bound of its performance with the baseline SSE *** the authors turn to multi-player models,where there exists one player adopting an equalizer ZD *** authors give bounds of the weighted sum of opponents’s utilities,and compare it with the SSE ***,the authors give simulations on unmanned aerial vehicles(UAVs)and the moving target defense(MTD)to verify the effectiveness of the proposed approach.

关键词： Discounted repeated Stackelberg asymmetric game equalizer zero-determinant strategy strong Stackelberg equilibrium strategy

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：