检索结果-内蒙古大学图书馆

arXiv 2025年

作者： Babu, Silpa Lingala, Sajan Goud Vaswani, Namrata Department of Electrical and Computer Engineering Iowa State University United States Department of Biomedical Engineering University of Iowa United States

This work introduces a novel "near" real-time (real-time after an initial short delay) MRI solution that handles motion well and is generalizable. Here, real-time means the algorithm works well on a highly accelerated scan, is zero-latency (reconstructs a new frame as soon as MRI data for it arrives), and is fast enough, i.e., the time taken to process a frame is comparable to the scan time per frame or lesser. We demonstrate its generalizability through experiments on 6 prospective datasets and 17 retrospective datasets that span multiple different applications, sampling schemes, and rates. Comparisons with a large number of existing real-time and batch methods, including unsupervised and supervised deep learning methods, show the power and speed of our approach. © 2025, CC BY.

关键词： Deep learning

来源：评论

学校读者我要写书评

暂无评论

Comparison of the Performance of Inline Filter Topologies Implementing Transmission Zeroes

Comparison of the Performance of Inline Filter Topologies Im...

引用

2024 IEEE Microwaves, Antennas, and Propagation Conference, MAPCON 2024

作者： Kumari, Anjali Macchiarella, Giuseppe Delmonte, Nicolò Silvestri, Lorenzo Oldoni, Matteo Caicedo, Steven Mejillones Moscato, Stefano Bozzi, Maurizio Department of Electrical Computer and Biomedical Engineering University of Pavia Italy Dipartimento di Elettronica Informazione e Bioingegneria Politecnico di Milano Italy Research and Development Department SIAE MICROELETTRONICA MI Cologno Monzese Italy

ISBN: (纸本)9798350379693

Advancements in compact, high-performance filtering structures are crucial for high performance communication systems. Applications such as massive MIMO antenna arrays require filters which are at the same time strongly selective and highly miniaturized. Traditionally, transmission zeroes in the filtering response have been obtained using cross-coupling between multiple resonators. Recently, techniques have been developed for the retrieval of transmission zeroes with inline topologies. In this work, two of such techniques are compared, the extracted-pole and the path filter. The size and performance of these topologies are evaluated by creating and comparing a test filter for each of them, working around 3.7 GHz with a 5.4% bandwidth. Substrate Integrated Waveguide (SIW) prototypes have been fabricated and measured. © 2024 IEEE.

关键词： Topology

来源：评论

学校读者我要写书评

暂无评论

Sustainable Energy Evolution Using IoT-Enhanced Carbon Capture and Storage for Oil Recovery 6

Sustainable Energy Evolution Using IoT-Enhanced Carbon Captu...

引用

6th International Conference on Energy, Power and Environment, ICEPE 2024

作者： Valli, K. Vijaya Naga Swathi, G. Lumina Julie, R. Saravanan, S. Sujatha, S. Malarvizhi, E. Srkr Engineering College Department of Computer Science and Engineering Andhra Pradesh Bhimavaram India Cmr Technical Campus Department of Computer Science and Engineering Telangana Hyderabad India Vel Tech Rangarajan Dr.Sagunthala R&d Institute of Science and Technology Department of Management Studies Tamil Nadu Chennai India Muthayammal Engineering College Department of Electrical and Electronics Engineering Tamil Nadu Namakkal India Saveetha University Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Department of Biomedical Engineering Tamil Nadu Chennai India St. Joseph's College of Engineering Department of Electronics and Communication Engineering Tamil Nadu Chennai India

ISBN: (纸本)9798350379297

The global energy environment is shifting toward sustainability and carbon neutrality. Internet of Things (IoT) technology with Carbon Capture and Storage (CCS) in Enhanced Oil Recovery (EOR) may reduce carbon emissions and optimize hydrocarbon recovery. This paper examines IoT-enabled CCS for EOR and carbon-neutral oil and gas operations. Real-time data capture and analysis using IoT technologies optimize CCS operations. Installing IoT sensors and devices across the EOR and CCS infrastructure lets operators monitor CO2 injection rates, reservoir pressure, temperature, and fluid composition. The CCS process is precisely controlled using data, improving carbon capture efficiency and lowering operating costs. Remote monitoring and management of carbon storage sites using IoT in CCS for EOR improves environmental sustainability. The collected CO2 is securely and efficiently contained, reducing leakage and environmental effects. Preventing CCS infrastructure problems with IoT-driven predictive maintenance ensures long-term operational dependability. Securely storing collected CO2 offsets oil and gas emissions and contributes to carbon neutrality. EOR process optimization with IoT technologies may boost hydrocarbon recovery, making the switch to greener energy sources easier. IoT-enabled CCS for EOR has the potential to produce carbon-neutral oil and gas operations. The system improves CCS efficiency and sustainability using real-time data, remote monitoring, and predictive maintenance. Integration of IoT with CCS reduces carbon emissions and promotes the industry's worldwide sustainability objectives. © 2024 IEEE.

关键词： Carbon capture and utilization

来源：评论

学校读者我要写书评

暂无评论

Short Wave Infrared Upconversion Imager with Electron Blocking Layer to Screen Electron Injection into Photosensitive Layer 5

Short Wave Infrared Upconversion Imager with Electron Blocki...

引用

5th IEEE International Conference on Flexible and Printable Sensors and Systems, FLEPS 2023

作者： Shin, Chanho Li, Ning Ng, Tse Nga University of California San Diego Material Science and Engineering Program La Jolla United States University of California San Diego Department of Electrical and Computer Engineering La Jolla United States

ISBN: (纸本)9781665457330

In this work, we demonstrated upconversion imagers integrated with shortwave infrared photodetectors paired with an electron blocking layer. The use of electron blocking layer screened charge injection to prevent recombination in photosensitive layer. The characteristics of each electron blocking layer were analyzed in aspects of noise and detectivity. For the optimized device, the parasitic luminance in the dark was efficiently suppressed, and the photon-to-photon efficiency was increased. The electron blocking layer used in this work is generally applicable for upconversion imagers using different absorption and emitting materials. © 2023 IEEE.

关键词： Photodetectors

来源：评论

学校读者我要写书评

暂无评论

Non-paraxial multiple scattering model for intensity diffraction tomography

Non-paraxial multiple scattering model for intensity diffrac...

引用

Frontiers in Optics, FiO 2022

作者： Zhu, Jiabei Wang, Hao Tian, Lei Department of Electrical and Computer Engineering Boston University MA02215 United States Department of Biomedical Engineering Boston University MA02215 United States

We propose a novel intensity diffraction tomography reconstruction algorithm based on the split-step non-paraxial model for recovering the 3D refractive index distribution of multiple-scattering biological samples. &#...

ISBN: (纸本)9781557528209

关键词：

来源：评论

学校读者我要写书评

暂无评论

Polyvinyl Alcohol Cryogels (PVA-C): Preparation and Multimodal Imaging Applications

Polyvinyl Alcohol Cryogels (PVA-C): Preparation and Multimod...

引用

Medical Imaging 2025: Image-Guided Procedures, Robotic Interventions, and Modeling

作者： Qi, Olivia R.Y. Peters, Terry M. Moore, John Chen, Elvis C.S. Western University Canada Robarts Research Institute London Canada School of Biomedical Engineering Western University Canada Department of Medical Biophysics Western University Canada Department of Electrical and Computer Engineering Western University Canada

ISBN: (纸本)9781510685949

Polyvinyl alcohol cryogel (PVA-C) is a widely used tissue-mimicking material in medical imaging phantoms, essential for evaluating imaging techniques, training clinicians, and simulating anatomical tissue structures. Its tunable mechanical and imaging properties make it valuable for multimodal imaging. However, PVA-C phantom reproducibility remains challenging due to fabrication variations, including inconsistencies in freeze-thaw cycle (FTC) conditions, PVA concentration, and imaging additives. This study systematically examines how PVA concentration, FTC profiles, and contrast-enhancing additives affect the mechanical and imaging properties of PVA-C phantoms in ultrasound, magnetic resonance imaging (MRI), and computed tomography (CT). Using in-house experiments and a comprehensive literature review, we analyze FTC conditions' role in modulating stiffness, attenuation, and relaxation times. We also assess contrast agents such as barium sulfate, gadolinium, and silica-based scatterers on imaging visibility and result. Our findings identify optimal fabrication conditions that enhance PVA-C phantom reproducibility and performance across imaging modalities. Our findings offer a comprehensive framework for optimizing PVA-C phantoms, ensuring reliable multimodal imaging applications. © 2025 SPIE

关键词： computerized tomography

来源：评论

学校读者我要写书评

暂无评论

Assessing power profile characteristics in solar PV-storage integrated electricity markets: A quantitative study

引用

e-Prime - Advances in electrical engineering, Electronics and Energy 2024年 9卷

作者： Mishan, Ramkrishna Fu, Xingang Hingu, Chanakya Fajri, Poria Egan, Matthew S. Ben-Idris, Mohammed Department of Electrical and Biomedical Engineering University of Nevada Department of Electrical and Computer Engineering Michigan State University

Integrating solar PV inverters and storage devices into the modern power grid generates multiple power profiles with varying magnitudes. The intermittent nature of PV necessitates installing storage devices to reduce unit commitment challenges and accommodate reserve power. This paper proposes various operational factors to determine the boundaries for individual and aggregated power profiles within a cluster of PV systems and storage units. The study utilizes dispatchability and operating reserve factors (primary and secondary) during storage discharge mode to extract dispatchable power and primary and secondary reserve power. Similarly, storage arbitrage and non-dispatchability factors extract arbitrage, non-dispatchable, and a portion of supplemental or tertiary reserve power during storage charging mode. An optimization model leveraging mixed-integer linear programming is formulated to minimize operational expenditures considering these hybrid PV-storage power profiles. Extrapolated electricity market rates for hybrid power profiles are projected using the prevailing prices of photovoltaic (PV) systems and storage technologies. This paper utilizes the proposed aggregated operational factors as constraints while extracting these power profiles for a cluster of PV-storages. The efficacy of the proposed optimization framework is tested on a modified IEEE 34-bus system by adding 10 PV-storage devices on 10 buses. The final quantitative values correspond to the percent penetration and arbitrage of these power profiles. © 2024

关键词： Arbitrage Dispatch Distributed energy resources Electricity market Non-dispatch Reserves Unit commitment

来源：评论

学校读者我要写书评

暂无评论

Theoretical basis and experimental validation of harmonic coherence-based ultrasound imaging for breast mass diagnosis

Theoretical basis and experimental validation of harmonic co...

引用

Medical Imaging 2023: Physics of Medical Imaging

作者： Kokumo, Khadijat Sharma, Arunima Myers, Kelly Ambinder, Emily Oluyemi, Eniola Lediju Bell, Muyinatu A. Department of Biomedical Engineering Northwestern University EvanstonIL United States Department of Electrical and Computer Engineering Johns Hopkins University BaltimoreMD United States Department of Radiology and Radiological Science Johns Hopkins Medicine BaltimoreMD United States Department of Computer Science Johns Hopkins University BaltimoreMD United States Department of Biomedical Engineering Johns Hopkins University BaltimoreMD United States

ISBN: (纸本)9781510660311

Coherence-based ultrasound imaging has demonstrated potential to improve breast mass diagnosis by distinguishing solid from fluid-filled masses. Harmonic imaging, which is known to reduce acoustic clutter, has the potential to offer additional improvements. However, the lack of a theoretical basis to describe these improvements precludes clinical recommendations based on physics and engineering principles. This work is the first to develop a theoretical model of coherence-based ultrasound imaging to describe both solid vs. fluid mass distinction and the effects of harmonic short-lag spatial coherence (SLSC) imaging. The scattering function and the transmit ultrasound beam of the van Cittert-Zernike theorem applied to ultrasound imaging were redefined to generate the theoretical model for solid vs. fluid mass distinction and for harmonic imaging, respectively. The derived theory was used to compare fundamental and harmonic SLSC images for hypoechoic solid, hypoechoic fluid, hyperechoic, and point targets. Theoretical simulations showed improved resolution, mitigated dark-region artifacts around hyperechoic targets, and increased spatial coherence of fluid masses in harmonic SLSC images when compared to fundamental SLSC images. Experimental data from tissue-mimicking phantoms and in vivo breast ultrasound images agreed with theoretical results. In particular, when compared to fundamental SLSC imaging, harmonic SLSC imaging improved resolution by 0.19 ± 0.25 mm, mitigated dark region artifacts by 0.55 ± 0.54 mm, and increased the spatial coherence of fluid-filled masses, resulting in a 6.50 ± 4.28 dB decrease in contrast. Results will enable future clinical recommendations supporting the use of fundamental or harmonic SLSC imaging for analyses of fluid or solid masses, respectively. These contributions establish a theoretical foundation to combine fundamental and harmonic coherence-based imaging with harmonic B-mode imaging to improve the accuracy of breast mass diagno

关键词： Ultrasonic imaging

来源：评论

学校读者我要写书评

暂无评论

Hyperspectral Image Analysis Using Maximum Abundance Classification

Hyperspectral Image Analysis Using Maximum Abundance Classif...

引用

International Conference on Intelligent Control and Information Processing (ICICIP)

作者： Nian Zhang Sougre-Nonma Stephanie Rouamba Wagdy H. Mahmoud Lara A. Thompson Department of Electrical and Computer Engineering University of the District of Columbia Washington D.C. USA Department of Mechanical Engineering Biomedical Engineering Program University of the District of Columbia Washington D.C. USA

ISBN: (数字)9798331516147

ISBN: (纸本)9798331516154

This paper presents a satellite hyperspectral image processing method that utilizes a maximum abundance classifier to categorize different regions of hyperspectral images into ground truth classes. First, the class names for each endmember and their corresponding columns in the signature matrix are identified, followed by the visualization of their spectral profiles. Abundance maps for the endmembers are then generated using the fully constrained least squares (FCLS) method. Afterward, the maximum abundance classifier is applied, and the resulting classified image is displayed with color-coded pixels. The abundance maps illustrate the spatial distribution of endmembers across the hyperspectral image, where the abundance values of each pixel represent the proportion of each endmember present. By determining the highest abundance value for each pixel and assigning it to the corresponding endmember class, the pixels within the hyperspectral images are classified. Experimental results demonstrate that the proposed MAC method effectively handles mixed pixels. In addition, it can effectively deal with the mixed pixel problem in hyperspectral images because it identifies components by calculating the abundance values for each pixel rather than relying solely on single spectral features.

关键词： Visualization Image segmentation Satellites Graphical models Information processing Hyperspectral imaging Intelligent control Image classification Distribution functions

来源：评论

学校读者我要写书评

暂无评论

Spectral learning of shared dynamics between generalized-linear processes 24

Spectral learning of shared dynamics between generalized-lin...

引用

Proceedings of the 38th International Conference on Neural Information Processing Systems

作者： Lucine L. Oganesian Omid G. Sani Maryam M. Shanechi Ming Hsieh Department of Electrical and Computer Engineering University of Southern California Los Angeles CA Ming Hsieh Department of Electrical and Computer Engineering Thomas Lord Department of Computer Science Alfred E. Mann Department of Biomedical Engineering Neuroscience Graduate Program University of Southern California Los Angeles CA

ISBN: (纸本)9798331314385

Generalized-linear dynamical models (GLDMs) remain a widely-used framework within neuroscience for modeling time-series data, such as neural spiking activity or categorical decision outcomes. Whereas the standard usage of GLDMs is to model a single data source, certain applications require jointly modeling two generalized-linear time-series sources while also dissociating their shared and private dynamics. Most existing GLDM variants and their associated learning algorithms do not support this capability. Here we address this challenge by developing a multi-step analytical subspace identification algorithm for learning a GLDM that explicitly models shared vs. private dynamics within two generalized-linear time-series. In simulations, we demonstrate our algorithm's ability to dissociate and model the dynamics within two time-series sources while being agnostic to their respective observation distributions. In neural data, we consider two specific applications of our algorithm for modeling discrete population spiking activity with respect to a secondary time-series. In both synthetic and real data, GLDMs learned with our algorithm more accurately decoded one time-series from the other using lower-dimensional latent states, as compared to models identified using existing GLDM learning algorithms.

关键词：

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：