检索结果-内蒙古大学图书馆

AiCareGaitRehabilitation: Multi-modalities sensor data fusion for AI-IoT enabled realtime electrical stimulation device for pre-Fog and post-Fog to person with Parkinson's Disease

引用

Information Fusion 2025年 122卷

作者： Ghayvat, Hemant Awais, Muhammad Geddam, Rebakah Quasim, Mohammad Tabrez Khowaja, Sunder Ali Dev, Kapal Computer Science and Media Technology Department Faculty of Technology Linnaeus University P G Vejdes väg 351 95 Växjö35234 Sweden Departments of Medical Physics Memorial Sloan Kettering Cancer Center New YorkNY10065 United States Unitedworld Institute of Technology Karnavati University Gujarat Gandhinagar382422 India Department of Computer Science and Artificial Intelligence College of Computing and Information Technology University of Bisha Bisha551 Saudi Arabia ADAPT Centre and School of Computing Dublin City University DublinD09 V209 Ireland ADAPT Centre and Department of Computer Science Munster Technological University Bishopstown CorkT12 P928 Ireland Department of Institute of intelligent Systems University of Johannesburg Auckland Park JohannesburgT12 P928 South Africa Center for Research Impact & Outcome Chitkara University Institute of Engineering and Technology Rapura Punjab 140401 India

The neuromuscular dysfunction known as Freezing of Gait (FoG), which is more prevalent in individuals suffering from Parkinson's Disease (PD), significantly reduces the quality of life and increases their risk of falling. Wearable FoG sensing technologies provide timely biofeedback cues to assist people regain control over their gait. However, the devices being bulky, intrusive, and annoyance of current FoG detection algorithms limit their usability in real-world applications. This study proposes a more efficient approach by integrating the FoG detection fusion algorithm into a Functional electrical Stimulation (FES) module. The design leverages features with low computational requirements and specialized hardware to minimize the use of physical space and memory. The Convolutional Neural Networks (CNN) approach with SVM output was deployed to classify FoG and non-FoG periods in real-time. Additionally, the study uses CNN algorithms in fusion with data from a triaxial accelerometer, strain sensors, and piezoelectric plantar sensors to test shank-worn FoG detection devices. The study demonstrates that electrical stimulation-based cueing strategies significantly improve gait control and mitigate FoG episodes in people with Parkinson's disease. The AiCareGaitRehabilitation system employs a multi-modal sensor fusion strategy to improve the efficacy of the FES device. Data from various sensors—such as strain sensor, 18 plantar sensors, and four quadriceps sensors—the system provides a holistic view of both pre-freezing of Gait (pre-FOG) and post-freezing of Gait (post-FOG) scenarios. This research aims to improve mobility, reduce fall risks, and eventually improve the quality of life for individuals with Parkinson's disease. © 2025

关键词： Gait analysis

来源：评论

学校读者我要写书评

暂无评论

A Unified Framework for Foreground and Anonymization Area Segmentation in CT and MRI Data

arXiv

引用

arXiv 2025年

作者： Nohel, Michal Ulrich, Constantin Suprijadi, Jonathan Wald, Tassilo Maier-Hein, Klaus Division of Medical Image Computing Heidelberg Germany Department of Biomedical Engineering Faculty of Electrical Engineering and Communication Brno University of Technology Brno Czech Republic University hospital Ostrava Department of Deputy director for science research and education Czech Republic Pattern Analysis and Learning Group Department of Radiation Oncology Heidelberg University Hospital Heidelberg Germany NCT Heidelberg A partnership between DKFZ University Medical Center Heidelberg Germany Medical Faculty Heidelberg University of Heidelberg Heidelberg Germany Faculty of Mathematics and Computer Science Heidelberg University Germany

This study presents an open-source toolkit to address critical challenges in preprocessing data for self-supervised learning (SSL) for 3D medical imaging, focusing on data privacy and computational efficiency. The toolkit comprises two main components: a segmentation network that delineates foreground regions to optimize data sampling and thus reduce training time, and a segmentation network that identifies anonymized regions, preventing erroneous supervision in reconstructionbased SSL methods. Experimental results demonstrate high robustness, with mean Dice scores exceeding 98.5 across all anonymization methods and surpassing 99.5 for foreground segmentation tasks, highlighting the toolkit's efficacy in supporting SSL applications in 3D medical imaging for both CT and MRI images. The weights and code is available at https://***/MIC-DKFZ/Foreground-and- Anonymization-Area-Segmentation. © 2025, CC BY.

关键词： Self-supervised learning

来源：评论

学校读者我要写书评

暂无评论

Foundation Models for Atomistic Simulation of Chemistry and Materials

arXiv

引用

arXiv 2025年

作者： Yuan, Eric C.-Y. Liu, Yunsheng Chen, Junmin Zhong, Peichen Raja, Sanjeev Kreiman, Tobias Vargas, Santiago Xu, Wenbin Head-Gordon, Martin Yang, Chao Blau, Samuel M. Cheng, Bingqing Krishnapriyan, Aditi Head-Gordon, Teresa Kenneth S. Pitzer Theory Center Department of Chemistry United States Department of Chemical and Biomolecular Engineering United States Electrical Engineering and Computer Science United States Bakar Institute of Digital Materials for the Planet University of California BerkeleyCA94720 United States Chemical Sciences Division United States Applied Mathematics and Computational Research Division United States Energy Technologies Area United States National Energy Research Scientific Computing Center Lawrence Berkeley National Laboratory BerkeleyCA94720 United States

Given the power of large language and large vision models, it is of profound and fundamental interest to ask if a foundational model based on data and parameter scaling laws and pre-training strategies is possible for learned simulations of chemistry and materials. The scaling of large and diverse datasets and highly expressive architectures for chemical and materials sciences should result in a foundation model that is more efficient and broadly transferable, robust to out-of-distribution challenges, and easily fine-tuned to a variety of downstream observables, when compared to specific training from scratch on targeted applications in atomistic simulation. In this Perspective we aim to cover the rapidly advancing field of machine learned interatomic potentials (MLIP), and to illustrate a path to create chemistry and materials MLIP foundation models at larger scale. © 2025, CC BY-SA.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Superconductivity and spin canting in spin–orbit-coupled trilayer graphene

引用

Nature 2025年第8063期641卷 1-7页

作者： Patterson, Caitlin L. Sheekey, Owen I. Arp, Trevor B. Holleis, Ludwig F. W. Koh, Jin Ming Choi, Youngjoon Xie, Tian Xu, Siyuan Guo, Yi Stoyanov, Hari Redekop, Evgeny Zhang, Canxun Babikyan, Grigory Gong, David Zhou, Haoxin Cheng, Xiang Taniguchi, Takashi Watanabe, Kenji Huber, Martin E. Jin, Chenhao Lantagne-Hurtubise, Étienne Alicea, Jason Young, Andrea F. Department of Physics University of California at Santa Barbara Santa Barbara CA United States Department of Physics California Institute of Technology Pasadena CA United States Department of Physics Harvard University Cambridge MA United States Department of Electrical Engineering and Computer Sciences University of California Berkeley CA United States Research Center for Materials Nanoarchitectonics National Institute for Materials Science Tsukuba Japan Research Center for Electronic and Optical Materials National Institute for Materials Science Tsukuba Japan Departments of Physics and Electrical Engineering University of Colorado Denver Denver CO United States Institute for Quantum Information and Matter California Institute of Technology Pasadena CA United States Département de physique & Institut quantique Université de Sherbrooke Sherbrooke QC Canada Walter Burke Institute for Theoretical Physics California Institute of Technology Pasadena CA United States

Graphene and transition metal dichalcogenide flat-band systems show similar phase diagrams, replete with magnetic1, 2, 3, 4–5 and superconducting6, 7, 8, 9, 10–11 phases. An abiding question has been whether magneti...

Graphene and transition metal dichalcogenide flat-band systems show similar phase diagrams, replete with magnetic^{1, 2, 3, 4–5} and superconducting^{6, 7, 8, 9, 10–11} phases. An abiding question has been whether magnetic ordering competes with superconductivity or facilitates pairing. For example, recent studies of Bernal bilayer graphene in the presence of enhanced spin–orbit coupling show a substantial increase in the observed domain and critical temperature T_c of superconducting states^{12, 13–14};however, the mechanism for this enhancement remains unknown. Here we show that introducing spin–orbit coupling in rhombohedral trilayer graphene (RTG) by substrate proximity effect generates new superconducting pockets for both electron and hole doping, with maximal T_c ≈ 300 mK, which is three times larger than in RTG encapsulated by hexagonal boron nitride. Using local magnetometry, we show that superconductivity straddles a transition between a spin-canted state with a finite in-plane magnetic moment and a state with complete spin–valley locking. This transition is reproduced in our Hartree–Fock calculations, in which this transition is driven by the competition between spin–orbit coupling and the carrier-density-tuned Hund’s interaction. Our experiment suggests that the enhancement of superconductivity by spin–orbit coupling is driven by a quantitative change in the canting angle rather than a change in the ground state symmetry. These results align with a recently proposed mechanism for the enhancement of superconductivity¹⁵, in which fluctuations in the spin-canting order contribute to the pairing interaction. © The Author(s), under exclusive licence to Springer Nature Limited 2025.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A Chaotic Image Encryption Scheme Using Novel Geometric Block Permutation and Dynamic Substitution

arXiv

引用

arXiv 2025年

作者： Ali, Muhammad Ahmad, Jawad Khan, Muhammad Abdullah Hussain Ullah, Safee Rehman, Mujeeb Ur Shah, Syed Aziz Khan, Muhammad Shahbaz Department of Electrical Engineering HITEC University Taxila47080 Pakistan Cyber Security Center Prince Mohammad Bin Fahd University Al Khobar31952 Saudi Arabia School of Computer Science and Informatics De Montfort University LeicesterLEl 9BH United Kingdom Research Centre for Intelligent Healthcare Coventry University CoventryCVl 5FB United Kingdom School of Computing Engineering and the Built Environment Edinburgh Napier University EdinburghEHlO 5DT United Kingdom

In this digital era, ensuring the security of digital data during transmission and storage is crucial. Digital data, particularly image data, needs to be protected against unauthorized access. To address this, this paper presents a novel image encryption scheme based on a confusion diffusion architecture. The diffusion module introduces a novel geometric block permutation technique, which effectively scrambles the pixels based on geometric shape extraction of pixels. The image is converted into four blocks, and pixels are extracted from these blocks using L-shape, U-shape, square-shape, and inverted U-shape patterns for each block, respectively. This robust extraction and permutation effectively disrupts the correlation within the image. Furthermore, the confusion module utilises bit-XOR and dynamic substitution techniques. For the bit-XOR operation, 2D Henon map has been utilised to generate a chaotic seed matrix, which is bit-XORed with the scrambled image. The resultant image then undergoes the dynamic substitution process to complete confusion phase. A statistical security analysis demonstrates the superior security of the proposed scheme with high uncertainty and unpredictability, achieving an entropy of 7.9974 and a correlation coefficient of 0.0014. These results validate the proposed scheme's effectiveness in securing digital images. © 2025, CC BY-NC-ND.

关键词： Digital image storage

来源：评论

学校读者我要写书评

暂无评论

Native Three-Body Interactions in a Superconducting Lattice Gauge Quantum Simulator

arXiv

引用

arXiv 2025年

作者： Busnaina, J.H. Shi, Z. Alcaine-Cuervo, Jesús M. Yang, Cindy X.C. Nsanzineza, I. Rico, E. Wilson, C.M. Institute for Quantum Computing Department of Electrical & Computer Engineering University of Waterloo WaterlooONN2L 3G1 Canada EHU Quantum Center Department of Physical Chemistry University of the Basque Country UPV/EHU P.O. Box 644 Bilbao48080 Spain BCMaterials Basque Center for Materials Applications and Nanostructures UPV/EHU Science Park Leioa48940 Spain DIPC - Donostia International Physics Center Paseo Manuel de Lardizabal 4 San Sebastián20018 Spain Geneva1211 Switzerland IKERBASQUE Basque Foundation for Science Plaza Euskadi 5 Bilbao48009 Spain

While universal quantum computers remain under development, analog quantum simulators offer a powerful alternative for understanding complex systems in condensed matter, chemistry, and high-energy physics. One compelling application is the characterization of real-time lattice gauge theories (LGTs). LGTs are nonperturbative tools, utilizing discretized spacetime to describe gauge-invariant models. They hold immense potential for understanding fundamental physics but require enforcing local constraints analogous to electromagnetism’s Gauss’s Law. These constraints, which arise from gauge symmetries and dictate the form of the interaction between matter and gauge fields, are a significant challenge for simulators to enforce. Implementing these constraints at the hardware level in analog simulations is crucial. This requires realizing multibody interactions between matter and gauge-field elements, enabling them to evolve together while suppressing unwanted two-body interactions that violate the gauge symmetry. In this paper, we propose and implement a novel parametrically activated three-qubit interaction within a circuit quantum electrodynamics architecture. We experimentally demonstrate a minimal U(1) spin-1/2 model with a time evolution that intrinsically satisfies Gauss’s law in the system. This design serves as the foundational block for simulating LGTs on a superconducting photonic lattice. Copyright © 2025, The Authors. All rights reserved.

关键词： Quantum optics

来源：评论

学校读者我要写书评

暂无评论

Gate exhaustive testing

Gate exhaustive testing

引用

IEEE International Test Conference, ITC 2005

作者： Kyoung, Youn Cho Mitra, Subhasish McCluskey, Edward J. Center for Reliable Computing Departments of Electrical Engineering and Computer Science Stanford University Stanford CA Intel Corporation Folsom CA

ISBN: (纸本)0780390393

A gate exhaustive test set applies all possible input combinations to each gate in a combinational circuit, and observes the gate response at an observation point such as a primary output or a scan cell. In this paper, we analyze the effectiveness of the gate exhaustive test metric in detecting defective chips, and compare it with the single stuck-at fault, the N-detect, and the transition fault test metrics. Results from the Stanford CRC ELF35 and ELFI8 test experiments show that gate exhaustive test sets are more efficient than single stuck-at and N-detect test sets in terms of the ability to detect defective chips and test length. It is also shown that test sets with higher values of the gate exhaustive coverage have better test quality. © 2005 IEEE.

关键词： Electronic equipment testing

来源：评论

学校读者我要写书评

暂无评论

Transaction transmission model for blockchain channels based on non-cooperative games

引用

science China(Information sciences) 2023年第1期66卷 97-114页

作者： Peiyun ZHANG Chenxi LI Mengchu ZHOU Wenjun HUANG Abdullah ABUSORRAH Omaimah O.BAMASAG Engineering Research Center of Digital Forensics of Ministry of Education School of Computer and SoftwareNanjing University of Information Science and Technology School of Computer and Information Anhui Normal University Department of Electrical and Computer Engineering New Jersey Institute of Technology Center of Research Excellence in Renewable Energy and Power Systems Department of Electrical and Computer Engineering Faculty of Engineering and K.A.CARE Energy Research and Innovation CenterKing Abdulaziz University Department of Computer Science Faculty of Computing and Information Technology Center of Excellence in Smart Environment Research King Abdulaziz University

In blockchain networks, transactions can be transmitted through channels. The existing transmission methods depend on their routing information. If a node randomly chooses a channel to transmit a transaction, the transmission may be aborted due to insufficient funds(also called balance) or a low transmission rate. To increase the success rate and reduce transmission delay across all transactions, this work proposes a transaction transmission model for blockchain channels based on non-cooperative game *** balance, channel states, and transmission probability are fully considered. This work then presents an optimized channel transaction transmission algorithm. First, channel balances are analyzed and suitable channels are selected if their balance is sufficient. Second, a Nash equilibrium point is found by using an iterative sub-gradient method and its related channels are then used to transmit transactions. The proposed method is compared with two state-of-the-art approaches: Silent Whispers and Speedy Murmurs. Experimental results show that the proposed method improves transmission success rate, reduces transmission delay,and effectively decreases transmission overhead in comparison with its two competitive peers.

关键词： Blockchain channel transaction transmission channel balance channel state channel transmission probability non-cooperative game

来源：评论

学校读者我要写书评

暂无评论

Near-ultrastrong nonlinear light-matter coupling in superconducting circuits

引用

Nature Communications 2025年第1期16卷 1-8页

作者： Ye, Yufeng Kline, Jeremy B. Yen, Alec Cunningham, Gregory Tan, Max Zang, Alicia Gingras, Michael Niedzielski, Bethany M. Stickler, Hannah Serniak, Kyle Schwartz, Mollie E. O’Brien, Kevin P. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge 02139 MA United States Research Laboratory of Electronics Massachusetts Institute of Technology Cambridge 02139 MA United States John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge 02138 MA United States Lincoln Laboratory Massachusetts Institute of Technology Lexington 02421 MA United States AWS Center for Quantum Computing Pasadena 91125 CA United States

Light-matter interaction between an atom and an electromagnetic resonator is ubiquitous in quantum technologies. Although linear light-matter coupling gσ̂x(â+â†) can reach the ultrastrong regime g/ω > 10⁻¹, nonlinear light-matter coupling χ2σ̂zâ†â is typically perturbative and limited to χ/ω < 10⁻². Nonlinear coupling has the advantage of commuting with the atomic σ̂z and photonic â†â Hamiltonian, allowing for fundamental operations such as quantum-non-demolition measurement. Here, we use a superconducting circuit to demonstrate the experimental realization of near-ultrastrong χ/ω = (4.852 ± 0.006) × 10⁻². We also show signatures of light-light nonlinear coupling (χâ†âb̂†b̂) and χ/2π = 580.3 ± 0.4 MHz matter-matter nonlinear coupling (χ4σ̂z,aσ̂z,b), representing the largest reported ZZ interaction between two coherent qubits. Such advances in the nonlinear coupling strength of light, matter modes enable new physical regimes and could lead to orders of magnitude faster qubit readout and gates. © The Author(s) 2025.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Memory that never forgets:emerging nonvolatile memory and the implication for architecture design

引用

National science Review 2018年第4期5卷 577-592页

作者： Guangyu Sun Jishen Zhao Matt Poremba Cong Xu Yuan Xie Center for Energy-Efficient Computing and Applications School of Electronics Engineering and Computer Science Peking University Department of Computer Engineering University of California at Santa Cruz Advanced Micro Devices Inc. Hewlett Packard Lab Department of Electrical and Computer Engineering University of California at Santa Barbara

In order to mitigate the problem of the ‘memory wall', various emerging nonvolatile memory(NVM)technologies have been proposed to replace the traditional ones. These emerging NVMs include spin torque transfer random access memory, PCRAM, resistive random access memory, racetrack memory, *** to traditional memory technologies, they have the advantages of near-zero standby power, high storage density and nonvolatility, which make them competitive for future memory hierarchy ***, it is inefficient to directly apply these NVMs in existing memory architectures. On the one hand,these NVMs have their own limitations, such as long write latency, high write energy, limited write numbers, etc. Thus, proper architecture modification is required to adopt them into the traditional memory hierarchy. On the other hand, the unique features of these NVMs allow new memory architectures in memory subsystems and also introduce new challenges to be solved at the same time. In this paper, we not only review various emerging NVMs but also study typical related work on these topics to investigate their implications for memory architecture design.

关键词： non-volatile memory cache main memory energy efficiency

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：