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高教论坛 2024年第6期 119-124页

作者：滕莉莉韦淑雯覃雨舒广西大学广西南宁530004

共同富裕需要充分发挥金融市场的作用,而金融市场的健康发展与参与者的投资理念密切相关。大学生未来将步入社会成为金融市场和财富管理的重要参与主体,大学教育是培养投资理念的关键阶段,树立价值型投资理念有助于增强其金融风险防范意... 详细信息

共同富裕需要充分发挥金融市场的作用,而金融市场的健康发展与参与者的投资理念密切相关。大学生未来将步入社会成为金融市场和财富管理的重要参与主体,大学教育是培养投资理念的关键阶段,树立价值型投资理念有助于增强其金融风险防范意识,构筑健康的市场环境。本文通过问卷星平台向广西高校大学生收集有效问卷275份进行统计分析,发现大学生金融素养与价值型投资理念呈正相关,且“双一流”建设高校的学生表现更为显著;进一步机制分析表明,高年级和接受过金融专业学习的大学生能够增进价值型投资理念的形成。本研究对引导高等院校重视学生的金融素养与财商教育、助力价值型投资理念的养成有启发意义。

关键词：金融素养价值型投资理念金融风险防范大学教育

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MomentaMorph: Unsupervised Spatial-Temporal Registration with Momenta, Shooting, and Correction

arXiv

引用

arXiv 2023年

作者： Bian, Zhangxing wei, shuwen Liu, Yihao Chen, Junyu Zhuo, Jiachen Xing, Fangxu Woo, Jonghye Carass, Aaron Prince, Jerry L. Johns Hopkins University BaltimoreMD United States Johns Hopkins School of Medicine BaltimoreMD United States Massachusetts General Hospital Harvard Medical School BostonMA United States University of Maryland School of Medicine BaltimoreMD United States

Tagged magnetic resonance imaging (tMRI) has been employed for decades to measure the motion of tissue undergoing deformation. However, registration-based motion estimation from tMRI is difficult due to the periodic patterns in these images, particularly when the motion is large. With a larger motion the registration approach gets trapped in a local optima, leading to motion estimation errors. We introduce a novel "momenta, shooting, and correction" framework for Lagrangian motion estimation in the presence of repetitive patterns and large motion. This framework, grounded in Lie algebra and Lie group principles, accumulates momenta in the tangent vector space and employs exponential mapping in the diffeomorphic space for rapid approximation towards true optima, circumventing local optima. A subsequent correction step ensures convergence to true optima. The results on a 2D synthetic dataset and a real 3D tMRI dataset demonstrate our method’s efficiency in estimating accurate, dense, and diffeomorphic 2D/3D motion fields amidst large motion and repetitive patterns. Copyright © 2023, The Authors. All rights reserved.

关键词： Motion estimation

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Is Registering Raw Tagged-MR Enough for Strain Estimation in the Era of Deep Learning?

arXiv

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arXiv 2024年

作者： Bian, Zhangxing Alshareef, Ahmed wei, shuwen Chen, Junyu Wang, Yuli Woo, Jonghye Pham, Dzung L. Zhuo, Jiachen Carass, Aaron Prince, Jerry L. Johns Hopkins University BaltimoreMD United States University of South Carolina ColumbiaSC United States Massachusetts General Hospital Harvard Medical School BostonMA United States Uniformed Services University of the Health Sciences BethesdaMD United States University of Maryland School of Medicine BaltimoreMD United States

Magnetic Resonance Imaging with tagging (tMRI) has long been utilized for quantifying tissue motion and strain during deformation. However, a phenomenon known as tag fading, a gradual decrease in tag visibility over time, often complicates post-processing. The first contribution of this study is to model tag fading by considering the interplay between T1 relaxation and the repeated application of radio frequency (RF) pulses during serial imaging sequences. This is a factor that has been overlooked in prior research on tMRI post-processing. Further, we have observed an emerging trend of utilizing raw tagged MRI within a deep learning-based (DL) registration framework for motion estimation. In this work, we evaluate and analyze the impact of commonly used image similarity objectives in training DL registrations on raw tMRI. This is then compared with the Harmonic Phase-based approach, a traditional approach which is claimed to be robust to tag fading. Our findings, derived from both simulated images and an actual phantom scan, reveal the limitations of various similarity losses in raw tMRI and emphasize caution in registration tasks where image intensity changes over time. Copyright © 2024, The Authors. All rights reserved.

关键词： Magnetic resonance imaging

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雷珠单抗联合视网膜光凝术治疗视网膜分支静脉阻塞合并黄斑水肿的临床效果

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当代医学 2023年第27期29卷 116-119页

作者：程秀清沈茗危淑文抚州市第一人民医院眼科江西抚州344000 抚州市第一人民医院内分泌科江西抚州344000

目的探讨雷珠单抗联合视网膜光凝术(RP)治疗视网膜分支静脉阻塞(BRVO)合并黄斑水肿的临床效果。方法选取2021年1月至2022年1月抚州市第一人民医院眼科收治的76例BRVO合并黄斑水肿患者作为研究对象,按照治疗方法不同分为观察组与对照组,... 详细信息

目的探讨雷珠单抗联合视网膜光凝术(RP)治疗视网膜分支静脉阻塞(BRVO)合并黄斑水肿的临床效果。方法选取2021年1月至2022年1月抚州市第一人民医院眼科收治的76例BRVO合并黄斑水肿患者作为研究对象,按照治疗方法不同分为观察组与对照组,每组38例(46眼)。对照组采用RP治疗,观察组采用雷珠单抗联合RP治疗,比较两组治疗前后患眼最佳矫正视力、黄斑中心视网膜厚度(CMT)及并发症发生情况。结果两组患眼最佳矫正视力组间、时间比较差异有统计学意义(P<0.05);两组患眼最佳矫正视力交互比较差异无统计学意义。治疗后3、6、12个月,观察组最佳矫正视力均高于对照组,差异有统计学意义(P<0.05)。两组CMT组间、时间、交互比较差异有统计学意义(P<0.05)。治疗后3、6、12个月,观察组CMT均薄于对照组,差异有统计学意义(P<0.05)。观察组并发症发生率为5.26%,低于对照组的23.68%,差异有统计学意义(P<0.05)。结论采用雷珠单抗联合RP治疗BRVO合并黄斑水肿能提高患者患眼视力,改善CMT,安全性较高,值得临床推广应用。

关键词：雷珠单抗视网膜光凝视网膜分支静脉阻塞黄斑水肿

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ECLARE: Efficient cross-planar learning for anisotropic resolution enhancement

arXiv

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arXiv 2025年

作者： Remedios, Samuel W. wei, shuwen Han, Shuo Zhang, Jinwei Carass, Aaron Schilling, Kurt G. Pham, Dzung L. Prince, Jerry L. Dewey, Blake E. Department of Computer Science Johns Hopkins University United States Department of Electrical and Computer Engineering Johns Hopkins University United States Department of Radiology and Radiological Sciences Vanderbilt University Medical Center United States Department of Radiology Uniformed Services University United States Department of Neurology Johns Hopkins School of Medicine United States

In clinical imaging, magnetic resonance (MR) image volumes are often acquired as stacks of 2D slices, permitting decreased scan times, improved signal-to-noise ratio, and image contrasts unique to 2D MR pulse sequences. While this is sufficient for clinical evaluation, automated algorithms designed for 3D analysis perform sub-optimally on 2D-acquired scans, especially those with thick slices and gaps between slices. Super-resolution (SR) methods aim to address this problem, but previous methods do not address all of the following: slice profile shape estimation, slice gap, domain shift, and non-integer / arbitrary upsampling factors. In this paper, we propose ECLARE (Efficient Cross-planar Learning for Anisotropic Resolution Enhancement), a self-SR method that addresses each of these factors. ECLARE estimates the slice profile from the 2D-acquired multi-slice MR volume, trains a network to learn the mapping from low-resolution to high-resolution in-plane patches from the same volume, and performs SR with anti-aliasing. We compared ECLARE to cubic B-spline interpolation, SMORE, and other contemporary SR methods. We used realistic and representative simulations so that quantitative performance against a ground truth could be computed, and ECLARE outperformed all other methods in both signal recovery and downstream tasks. On real data for which there is no ground truth, ECLARE demonstrated qualitative superiority over other methods as well. Importantly, as ECLARE does not use external training data it cannot suffer from domain shift between training and testing. Our code is open-source and available at https://***/sremedios/eclare. © 2025, CC BY.

关键词： Signal to noise ratio

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环境监测大数据在污水处理中的应用

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中国资源综合利用 2025年第2期43卷 272-274页

作者：韦淑稳广西中圳检测技术有限公司广西柳州545000

近年来,我国环境保护力度不断加大,污水处理已成为环境保护工作的重要一环。随着技术的迅猛进步,环境监测大数据为污水处理厂的精细化管理和高效运营开辟全新的途径。环境监测大数据技术主要由3部分组成,即数据采集与传输、数据存储与... 详细信息

近年来,我国环境保护力度不断加大,污水处理已成为环境保护工作的重要一环。随着技术的迅猛进步,环境监测大数据为污水处理厂的精细化管理和高效运营开辟全新的途径。环境监测大数据技术主要由3部分组成,即数据采集与传输、数据存储与管理、数据分析与挖掘。结合环境监测大数据技术组成,分析环境监测大数据在污水处理领域的作用,深入研究环境监测大数据应用的技术创新和发展趋势。研究表明,环境监测大数据有助于提高污水处理厂运行效率,强化水质监测与预警,高效管理排水管网,科学制定水环境规划与政策。未来,要加强技术创新,将环境监测大数据深入应用在污水处理领域,提升污水处理效能,促进水环境质量持续好转。

关键词：环境监测大数据污水处理技术创新发展趋势

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Steric construction and modulation of Co-Nx single-atom electrocatalysts via polyoxometalate clusters integration

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APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY 2024年 352卷

作者： Wu, Yunping Niu, shuwen wei, Zhengyu Meng, Lingzhe wei, wei Xi An Jiao Tong Univ Engn Res Ctr Energy Storage Mat & Devices Dept Appl Chem Sch ChemMinist EducXian Key Lab Sustainable Ene Xian 710049 Peoples R China

Single-atom catalysts (SACs) with nitrogen-coordinated transition metal sites (M-N-x) hold great promise for electrocatalytic oxygen reduction and oxygen evolution reactions (ORR, OER). Despite substantial achievements based on the confinement pyrolysis and heteroatom-doping methods, the M-N-x SACs still suffer from low yield of atomic sites and less tenability of electronic states of M-N-x center. Here, an innovate synthesis methodology is proposed for surface integrating Co atoms onto polyoxometalate (POM) and its derivative clusters, which promise to regulate the atomic distribution and coordination environments of Co-N-x SACs at the sub-nanometer level. The synthetic procedures exhibit general applicability for a variety of POM clusters to achieve high atomic Co loading up to 9.9 wt%. Steric integration by POM-derived clusters (e.g. MoN) also impart strengthened d-p orbital hybridization of Co-N-x SACs by the formation of Co-N-Mo bonding, which surpass common heteroatoms toward modulating the geometric and electronic structures of M-N-x SACs, leading to pronounced catalytic activity and durability. This work validates the effectiveness of the unique POM-integration strategy toward atomic dispersion of transition metal, further guides the engineering of M-N-x SACs to promote catalytic performance from the sub-nanometer scale.

关键词： Polyoxometalate Cluster integration Single-atom catalyst Electron distribution Oxygen reduction reaction

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Accelerated proton-coupled electron transfer kinetics of iron phthalocyanine for oxygen reduction via heteropoly blue clusters

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APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY 2025年 367卷

作者： Meng, Lingzhe Niu, shuwen wei, Zhengyu Qin, Xue Naseem, Faheem wei, wei Xi An Jiao Tong Univ Engn Res Ctr Energy Storage Mat & Devices Xian Key Lab Sustainable Energy Mat Chem Minist EducDept Appl ChemSch Chem Xian 710049 Peoples R China

Iron phthalocyanine (FePc) with tetracoordinated Fe-N4 site shows promising activity for catalyzing the oxygen reduction reaction (ORR) in alkaline media. However, the consecutive proton-coupled electron transfer (PCET) steps with water as the proton donor and low electronic conductivity of FePc raise the kinetic barriers for device application. Herein, a significant effect of polyoxometalates (POMs) on the ORR kinetics of Fe-N4 sites via surface coordination of FePc is revealed. POM clusters modulate the interactive steric/electronic environment of Fe-N4, leading to a low barrier for H2O cleavage to produce protons along with a high electron transfer rate, thereby accelerating the PCET steps of FePc. With precisely controlled electron charge of POM clusters, the influence and mechanism of heteropoly blue in promoting PCET steps of FePc relative to heteropoly acid are elucidated, and noticeably enhanced ORR activity and reaction current are achieved. These findings highlight the potential of POMs as ligands to optimize dynamics of Fe-N4 atomic sites toward efficient alkaline ORR.

关键词： Oxygen reduction reaction Proton-coupled electron transfer Iron phthalocyanine Polyoxometalates Heteropoly blue

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A Low-Voltage and LDO-Less Wireless Pressure Sensor Readout System With Current Mode Pseudo-PLL and Charge Pump-Powered UWB Data Transmission for Implantable Health Monitoring

引用

IEEE SENSORS JOURNAL 2024年第24期24卷 41941-41953页

作者： Li, Fanyang Wu, shuwen Yin, Tao wei, Rongshan Fuzhou Univ Coll Phys & Informat Engn Fuzhou 350116 Peoples R China Chinese Acad Sci Inst Semicond Beijing 100083 Peoples R China Univ Chinese Acad Sci Coll Integrated Circuits Beijing 101408 Peoples R China

This article presents an implantable pressure sensor readout system (IPRO) that can work at low voltage and does not need an internal low dropout regulator (LDO). This article has made a series of optimizations for power consumption. The power supply of IPRO uses 434-MHz energy harvesting (EH), which only uses two-stage rectification and is equipped with a corresponding ultralow power undervoltage locking (UVLO) circuit. The analog front-end (AFE) and signal-processing parts use current mode and differential pseudo-phase-locked loop (DPPLL), which can work stably under low voltage and maintain a certain degree of accuracy and power rejection ability. The wireless data transmission part adopts the impulse ultrawideband (IR-UWB) scheme. Its ultralow power consumption allows it to be powered by a charge pump, which is the first time it has been proposed in implantable systems. To further optimize power consumption, the simplest encoding circuit suitable for the front-end output form was proposed, and a power oscillator (PO) with accelerated start-up was used to optimize area and power consumption. The system is implemented in a 180-nm complementary metal oxide semiconductor (CMOS) process, with a chip area of 1.1 * 1.0 mm(2). The measurement results indicate that the typical working voltage of the IPRO is 0.8 V, the typical power consumption is 11.8 mu W, and the accuracy is 1.11 mmHg. Compared with existing designs, there is a significant optimization in supply voltage and power consumption.

关键词： Power demand Sensors Wireless communication Wireless sensor networks Optimization Low voltage Data communication Phasor measurement units Charge pumps Monitoring Charge pump current mode impulse ultrawideband (IR-UWB) low power power oscillator (PO) pseudo-PLL

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Understanding rural land use transition and regional consolidation implications in China

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LAND USE POLICY 2019年 82卷 742-753页

作者： Qu Yanbo Jiang Guang-hui Li Zitong Tian Yaya wei shuwen Shandong Univ Finance & Econ Sch Publ Management Jinan 250014 Shandong Peoples R China Beijing Normal Univ Coll Resources Sci & Technol Fac Geog Sci State Key Lab Earth Surface Proc & Resource Ecol Beijing 100875 Peoples R China

The changes in cultivated land and rural residential land and their interrelation are the most direct manifestation of land use transition in rural areas, which is an important basis to carry out rural land consolidation scientifically. This study constructs a conceptual model of rural land use transition and analyses the process characteristics and coupling relationship of land use transition between cultivated land and rural residential land in China in four periods from 1996 to 2016. Then, it puts forward response strategies for regional rural land consolidation. As the results show, an inverse trend between cultivated land and rural residential land, together with a certain degree of volatility demonstrated an inadequate transition in rural land use system. The types of cultivated land and rural residential land transition changed from single dominant to multiple equilibrium, but the main type of rural land use system in different stages was synchronous R negative linking. The spatial pattern of cultivated land and rural residential land transition is obviously unbalanced. The transition of rural land use system in the southeastern part of Hu Huanyong Line is active, where no transition model and process transition model play a dominant role. This area can be considered as priority for rural land consolidation in the future. Rural land consolidation should conform to the rules of land use transition, establish a multi-objective oriented regional differentiation strategy system, and promote the coordinated evolution of rural land use system.

关键词： Land use transition Land consolidation Rural residential land Cultivated land China

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