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Eigenstate properties of the disordered Bose-Hubbard chain

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Frontiers of physics 2024年第4期19卷 57-72页

作者： jie Chen Chun Chen Xiaoqun Wang Key Laboratory of Artificial Structures and Quantum Control(Ministry of Education) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China School of Physics Zhejiang UniversityHangzhou 310058China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China

Many-body localization(MBL)of a disordered interacting boson system in one dimension is studied numerically at the filling faction *** von Neumann entanglement entropy Svn is commonly used to detect the MBL phase transition but remains challenging to be directly *** on the U(1)symmetry from the particle number conservation,Svn can be decomposed into the particle number entropy S_(n) and the configuration entropy *** light of the tendency that the eigenstate's S_(c) nears zero in the localized phase,we introduce a quantity describing the deviation of S from the ideal thermalization distribution;finite-size scaling analysis illustrates that it shares the same phase transition point with Sv but displays the better critical *** observation hints that the phase transition to MBL might largely be determined by S and its fluctuations Notably,the recent experiments[***,et al.,Science 364,256(2019);***,et al.,***.19,481(2023)]demonstrated that this deviation can potentially be measured through the Sn ***,our investigations reveal that the thermalized states primarily occupy the low-energy section of the spectrum,as indicated by measures of localization length,gap ratio,and energy density *** low-energy spectrum of the Bose model closely resembles the entire spectrum of the Fermi(or spin XXZ)model,accommodating a transition from the thermalized to the localized ***,owing to the bosonic statistics,the high-energy spectrum of the model allows the formation of distinct clusters of bosons in the random potential *** analyze the resulting eigenstate properties and briefly summarize the associated *** distinguish between the phase regions at the low and high energies,a probing quantity based on the structure of S_(VN) is also *** work highlights the importance of symmetry combined with entanglement in the study of *** this regard,for the disordered Heisenberg XXZ

关键词： entanglement entropy decomposition U(1)symmetry thermalization-to-localization transition

A Simple Proof of ACC for Minimal Log Discrepancies for Surfaces

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Acta Mathematica Sinica,English Series 2024年第2期40卷 425-434页

作者： Jing Jun HAN Yu jie LUO Shanghai Center for Mathematical Sciences Fudan UniversityJiangwan CampusShanghai 200438P.R.China Department of Mathematics Johns Hopkins UniversityBaltimoreMD 21218USA

Following Shokurov's idea,we give a simple proof of the ACC conjecture for minimal log discrepancies for surfaces.

关键词： Ascending chain condition minimal log discrepancies minimal model program surface

CMAGAN:classifier-aided minority augmentation generative adversarial networks for industrial imbalanced data and its application to fault prediction

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Advances in Manufacturing 2024年第3期12卷 603-618页

作者： Wen-jie Wang Zhao Liu Ping Zhu School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai200240People’s Republic of China National Engineering Research Center of Automotive Power and Intelligent Control Shanghai Jiao Tong UniversityShanghai200240People’s Republic of China School of Design Shanghai Jiao Tong UniversityShanghai200240People’s Republic of China

Class imbalance is a common characteristic of industrial data that adversely affects industrial data mining because it leads to the biased training of machine learning *** address this issue,the augmentation of samples in minority classes based on generative adversarial networks(GANs)has been demonstrated as an effective *** study proposes a novel GAN-based minority class augmentation approach named classifier-aided minority augmentation generative adversarial network(CMAGAN).In the CMAGAN framework,an outlier elimination strategy is first applied to each class to minimize the negative impacts of ***,a newly designed boundary-strengthening learning GAN(BSLGAN)is employed to generate additional samples for minority *** incorporating a supplementary classifier and innovative training mechanisms,the BSLGAN focuses on learning the distribution of samples near classification ***,it can fully capture the characteristics of the target class and generate highly realistic samples with clear ***,the new samples are filtered based on the Mahalanobis distance to ensure that they are within the desired *** evaluate the effectiveness of the proposed approach,CMAGAN was used to solve the class imbalance problem in eight real-world fault-prediction *** performance of CMAGAN was compared with that of seven other algorithms,including state-of-the-art GAN-based methods,and the results indicated that CMAGAN could provide higher-quality augmented results.

关键词： Class imbalance Minority class augmentation Generative adversarial network(GAN) Boundary strengthening learning(BSL) Fault prediction

End-to-end data-driven modeling framework for automated and trustworthy short-term building energy load forecasting

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building Simulation 2024年第8期17卷 1419-1437页

作者： Chaobo Zhang jie Lu Jiahua Huang Yang Zhao Department of the built Environment Eindhoven University of TechnologyEindhovenThe Netherlands Energy Efficient Cities Initiative Department of EngineeringUniversity of CambridgeCambridgeUK Institute of Refrigeration and Cryogenics Zhejiang UniversityHangzhouChina Institute of Green building and Engineering Design Zhejiang Province Institute of Architectural Design and Research Co.Ltd.HangzhouChina Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province Jiaxing Research InstituteZhejiang UniversityJiaxingChina

Conventional automated machine learning(AutoML)technologies fall short in preprocessing low-quality raw data and adapting to varying indoor and outdoor environments,leading to accuracy reduction in forecasting short-term building energy ***,their predictions are not transparent because of their black box ***,the building field currently lacks an AutoML framework capable of data quality enhancement,environment self-adaptation,and model *** address this research gap,an improved AutoML-based end-to-end data-driven modeling framework is *** optimization is applied by this framework to find an optimal data preprocessing process for quality improvement of raw *** bridges the gap where conventional AutoML technologies cannot automatically handle missing data and outliers.A sliding window-based model retraining strategy is utilized to achieve environment self-adaptation,contributing to the accuracy enhancement of AutoML ***,a local interpretable model-agnostic explanations-based approach is developed to interpret predictions made by the improved *** overcomes the poor interpretability of conventional AutoML *** performance of the improved framework in forecasting one-hour ahead cooling loads is evaluated using two-year operational data from a real *** is discovered that the accuracy of the improved framework increases by 4.24%–8.79%compared with four conventional frameworks for buildings with not only high-quality but also low-quality operational ***,it is demonstrated that the developed model interpretation approach can effectively explain the predictions of the improved *** improved framework offers a novel perspective on creating accurate and reliable AutoML frameworks tailored to building energy load prediction tasks and other similar tasks.

关键词： building energy load forecasting end-to-end data-driven modeling automated machine learning Bayesian optimization model retraining model interpretation

Prevention of ventilator-associated pneumonia with inhaled antibiotics

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World Journal of Emergency Medicine 2024年第3期15卷 165-168页

作者： Stephan Ehrmann jie Li Intensive Care Medicine INSERM CIC 1415CRICS-TriggerSep FCRIN research networkUniversity Hospital Center in ToursTours 37044France Respiratory Pathology Research Center National Institute of Health and Medical ResearchTours 37000France Department of Cardiopulmonary Sciences Division of Respiratory CareRush UniversityChicago 60612USA

The direct delivery of inhaled antibiotics to the respiratory tract has been a subject of enduring interest among medical practitioners and researchers due to the associated favorable *** interest has been particularly pronounced in the context of critically illpatients,wherehealthcare-associatedpulmonary infections represent a significant challenge,driving continued exploration of inhaled antibiotics for intubated *** high-level evidence has shown a very promising application in the field of ventilator-associated pneumonia (VAP) prevention.^([1]).

关键词： pneumonia ventilator respiratory

釉质粘结树脂牙合垫对正畸治疗过程中牙根吸收的影响

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济宁医学院学报 2020年第1期43卷 32-35页

作者：步捷济宁医学院口腔医学院济宁272013

目的比较后牙牙合面粘结树脂牙合垫和未使用粘结树脂牙合垫对牙根根尖吸收的影响,分析粘结树脂牙合垫与牙根吸收的关系。方法选取2013年1月1日至2015年12月31日于济宁医学院附属医院正畸科因咬合干扰需要使用下颌后牙树脂牙合垫的患者26... 详细信息

目的比较后牙牙合面粘结树脂牙合垫和未使用粘结树脂牙合垫对牙根根尖吸收的影响,分析粘结树脂牙合垫与牙根吸收的关系。方法选取2013年1月1日至2015年12月31日于济宁医学院附属医院正畸科因咬合干扰需要使用下颌后牙树脂牙合垫的患者26例,在下颌单侧第一磨牙牙合面粘结树脂牙合垫作为实验侧,另一侧未使用粘结树脂牙合垫作为对照侧。治疗前、后拍摄锥形束CT(CBCT),测量下颌第一磨牙牙根根尖外吸收量。比较2组牙根根尖外吸收量的差异。结果试验侧下颌第一磨牙的近中牙根根尖外吸收量为(0. 87±0. 62) mm,对照侧该牙根根尖吸收量(0. 85±0. 51) mm,二者之间无显著差异(P> 0. 05);试验侧下颌第一磨牙的远中牙根根尖外吸收量为(0. 85±0. 47) mm,对照侧该牙根根尖外吸收量为吸收量(0. 84±0. 51) mm,二者之间无显著差异(P> 0. 05)。结论使用后牙釉质粘结树脂牙合垫不会诱发更多的牙根吸收,正畸过程中可以使用后牙釉质粘结树脂牙合垫解除咬合干扰。

关键词：树脂牙合垫牙根吸收锥形束CT

Nanoforming of transferred metal contacts for enhanced twodimensional field effect transistors

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Nano Research 2024年第4期17卷 3210-3216页

作者： Shuoheng Xu Zheng Huang jie Guan Yaowu Hu The Institute of Technological Sciences Wuhan UniversityWuhan 430072China School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China School of Physics Southeast UniversityNanjing 211189China

Two-dimensional transition metal chalcogenides(2D-TMDs)have attracted much attention because of their unique layered structure and physical properties for transistor *** transferred metal contacts on these low-dimensional materials or their homogeneous and heterogeneous multilayers have generated huge interest to avoid deposition *** this paper,we show that there are large physical gaps at both the edge contact and surface contact between the transferred electrodes and the 2D materials.A method called laser shock induced superplastic deformation(LSISD)is proposed to tackle this issue and enhance the performance of the *** enhancement mechanism was investigated by molecular dynamics(MD)simulations of the nanoforming process,atomic force microscopy(AFM),scanning electron microscopy(SEM),transmission electron microscopy(TEM)characterizations of the interfaces,and density functional theory(DFT)*** force effect of laser shock can reduce the contact gap between metals and *** electrical performances of the transistors before and after LSISD,along with MD simulations,are used to find the optimal process *** addition,this paper applies the LSISD method to the short-channel MoS_(2)/graphene vertical transistors to show potential improvement in interface contact and electrical *** paper demonstrates the first report on using mechanical force induced by laser shock to enhance metal–semiconductor interfaces and transistor performances.

关键词： laser shock nanoforming metal-semiconductor contact electronics two-dimensional transistors

Parametric resonance of axially functionally graded pipes conveying pulsating fluid

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Applied Mathematics and Mechanics(English Edition) 2024年第2期45卷 239-260页

作者： jie JING Xiaoye MAO Hu DING Liqun CHEN Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai Frontier Science Center of MechanoinformaticsShanghai Institute of Applied Mathematics and MechanicsSchool of Mechanics and Engineering ScienceShanghai UniversityShanghai 200444China Shanghai Institute of Aircraft Mechanics and Control Shanghai 200092China

Based on the generalized Hamilton's principle,the nonlinear governing equation of an axially functionally graded(AFG)pipe is *** non-trivial equilibrium configuration is superposed by the modal functions of a simply supported *** the direct multi-scale method,the response and stability boundary to the pulsating fluid velocity are solved analytically and verified by the differential quadrature element method(DQEM).The influence of Young's modulus gradient on the parametric resonance is investigated in the subcritical and supercritical *** general,the pipe in the supercritical region is more sensitive to the pulsating *** nonlinearity changes from hard to soft,and the non-trivial equilibrium configuration introduces more frequency components to the ***,the increasing Young's modulus gradient improves the critical pulsating flow velocity of the parametric resonance,and further enhances the stability of the *** addition,when the temperature increases along the axial direction,reducing the gradient parameter can enhance the response *** work further complements the theoretical analysis of pipes conveying pulsating fluid.

关键词： pipe conveying fluid axially functionally graded supercritical resonance multi-scale method parametric resonance

种植体周围炎时的白细胞介素17:是骨保护还是骨破坏?

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中国组织工程研究 2014年第25期18卷 4062-4067页

作者：刘博宋宁步捷封伟济宁医学院口腔医学系山东省济宁市272067 四川大学华西口腔医学院四川省成都市610041 济宁医学院附属医院口腔科山东省济宁市272029

背景:种植体周围炎发生时,种植体周围龈沟液和软组织中的白细胞介素17水平明显增加,并与种植体周围探诊深度呈正相关关系,但由于白细胞介素17的骨吸收和保护的双重作用,在种植体周围炎中的作用存在争议,尚有待进一步深入研究。目的:回... 详细信息

背景:种植体周围炎发生时,种植体周围龈沟液和软组织中的白细胞介素17水平明显增加,并与种植体周围探诊深度呈正相关关系,但由于白细胞介素17的骨吸收和保护的双重作用,在种植体周围炎中的作用存在争议,尚有待进一步深入研究。目的:回顾性探讨种植体周围炎和白细胞介素17相关性的研究进展。方法:由第一作者用计算机检索万方数据库、中国知网(CNKI)、Medline数据库,检索时间:1991至2014年,检索词为"牙种植体,种植体周围炎,牙周炎,Th17细胞,白细胞介素17,细胞因子"和"dental implants,peri-implantitis,periodontitis,Th17 cells,interleukin-17,cytokines",语言分别设定为中文和英文。从白细胞介素17在种植体周围炎中骨破坏和骨保护两方面作用进行总结,对种植体周围炎中白细胞介素17的检测、表达及与炎症程度相关性等方面进行讨论。结果与结论:共检索到文献241篇,按照纳入与排除标准对文献进行筛选,共纳入46篇。结果表明利用种植体周围龈沟液或者血液,无创性的检测白细胞介素17水平变化,有利于种植体周围炎的早期诊断和治疗效果监测。目前大部分研究显示白细胞介素17和种植体周围炎有一定联系,白细胞介素17水平和种植体周围探诊深度呈正相关关系。但是,也有部分研究推测白细胞介素17有骨保护作用,白细胞介素17受体基因水平在慢性牙周炎和牙周健康者中的差异无显著性意义。鉴于此,种植体周围炎和白细胞介素17的相关性尚有待进一步研究。

关键词：生物材料口腔生物材料牙种植体种植体周围炎牙周炎 Th17细胞白细胞介素17 细胞因子