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LIRB-Based Quantum Circuit Fidelity Assessment and Gate Fault Diagnosis

Computers, Materials & Continua 2025年第2期82卷 2215-2233页

作者： Mengdi Yang Feng Yue Weilong Wang Xiangdong Meng Lixin Wang Pengyu Han Haoran He Benzheng Yuan Zhiqiang Fan Chenhui Wang Qiming Du Danyang zheng Xuefei Feng zheng shan Laboratory for Advanced Computing and Intelligence Engineering Information Engineering UniversityZhengzhou450001China

Quantum circuit fidelity is a crucial metric for assessing the accuracy of quantum computation results and indicating the precision of quantum algorithm execution. The primary methods for assessing quantum circuit fidelity include direct fidelity estimation and mirror circuit fidelity estimation. The former is challenging to implement in practice, while the latter requires substantial classical computational resources and numerous experimental runs. In this paper, we propose a fidelity estimation method based on Layer Interleaved Randomized Benchmarking, which decomposes a complex quantum circuit into multiple sublayers. By independently evaluating the fidelity of each layer, one can comprehensively assess the performance of the entire quantum circuit. This layered evaluation strategy not only enhances accuracy but also effectively identifies and analyzes errors in specific quantum gates or qubits through independent layer evaluation. Simulation results demonstrate that the proposed method improves circuit fidelity by an average of 6.8% and 4.1% compared to Layer Randomized Benchmarking and Interleaved Randomized Benchmarking methods in a thermal relaxation noise environment, and by 40% compared to Layer RB in a bit-flip noise environment. Moreover, the method detects preset faulty quantum gates in circuits generated by the Munich Quantum Toolkit Benchmark, verifying the model’s validity and providing a new tool for faulty gate detection in quantum circuits.

关键词： Quantum circuits Interleaved Random Benchmarking(IRB) circuit fidelity fault gates

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石亭江底栖动物群落结构季节变化与生态评价

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人民长江 2025年第1期56卷 67-73页

作者：李松忆郑珊周雄冬浙江省水利水电勘测设计院有限责任公司浙江杭州310002 天津大学中国地震局地震工程综合模拟与城乡抗震韧性重点实验室天津300350 天津大学滨海土木工程结构与安全教育部重点实验室天津300350 天津大学建筑工程学院天津300350 中国科学院水生生物研究所湖北武汉430072

汶川地震后石亭江山前河段冲刷严重,对河流生态产生重要影响,然而目前尚缺乏对山前冲刷河段的定量生态评价。选取石亭江、绵远河和湔江为研究对象,根据2021年秋季(10月)和2022年夏季(7月)采集的大型无脊椎底栖动物样本与环境观测数据,... 详细信息

汶川地震后石亭江山前河段冲刷严重,对河流生态产生重要影响,然而目前尚缺乏对山前冲刷河段的定量生态评价。选取石亭江、绵远河和湔江为研究对象,根据2021年秋季(10月)和2022年夏季(7月)采集的大型无脊椎底栖动物样本与环境观测数据,分析了石亭江底栖动物群落结构、多样性、功能摄食类群和功能习性类群的季节变化特点。结果表明:石亭江秋季共采集底栖动物54种,隶属4门6纲35科,夏季共采集到底栖动物33种,隶属1门1纲18科,其中牧食收集者为优势程度最大的功能摄食类群,捕食者的优势程度最小,秋季固着型生物的优势程度最大,夏季蔓生型生物的优势程度最大,攀爬型生物的优势程度在秋季和夏季均为最小。基于底栖动物完整性评价的多参数(MMI)指数,将3条河流栖息地斑块的生态质量划分为极差、差、中等、良好和极好5个等级。结果显示:3条河流栖息地斑块生态质量整体为良好,局部为中等;绵远河与湔江的栖息地斑块生态质量整体高于石亭江;秋季石亭江栖息地斑块的生态质量好于夏季。

关键词：大型无脊椎底栖动物季节变化功能摄食类群功能习性类群多参数(MMI)指数石亭江

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莫莫格自然保护区水体DOM组成及其水质关联性

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中国环境科学 2025年第2期45卷 1016-1026页

作者：郑珊珊刘东萍谢晓琳钱锋于会彬宋永会辽宁大学环境学院辽宁沈阳110036 中国环境科学研究院环境基准与风险评估国家重点实验室北京100012

针对莫莫格自然保护区,选择3个水体,利用三维荧光光谱结合平行因子分析(PARAFAC)探究溶解性有机质(DOM)的组成、光谱特征和来源;采用二维相关光谱结合结构方程模型分析DOM组分变化及其与水质指标的响应关系.结果表明,水体DOM受内源和外... 详细信息

针对莫莫格自然保护区,选择3个水体,利用三维荧光光谱结合平行因子分析(PARAFAC)探究溶解性有机质(DOM)的组成、光谱特征和来源;采用二维相关光谱结合结构方程模型分析DOM组分变化及其与水质指标的响应关系.结果表明,水体DOM受内源和外源共同作用,腐殖化特征明显,蛋白质组分含量较低.PARAFAC共识别出微生物代谢产物(C1)、类富里酸(C2和C4)、类胡敏酸(C3)和类色氨酸(C5)等5种组分,其中C1组分含量最高(41.37%);DOM来源、组成、转化与保护区内水生动、植物生长环境下的微生物代谢过程紧密相关,采用2D-COS表征沿水流方向DOM组分的变化顺序为:C4→C2→C3→C1→C5,类富里酸(C2和C4)含量的变化幅度大于类色氨酸,类色氨酸的含量相对比较稳定.C1、C5组分与CODMn呈显著正相关,表明其具有同源性,主要来源于藻类生长死亡过程中产生的大量有机物.DOM来源和组成对水环境因子有直接或间接的影响,DOM主要通过腐殖化程度直接影响水质状态,影响权重为46.17%;DOM组分C2和C3间接影响水质状态,影响权重为17.59%.莫莫格自然保护区水体DOM组成与水环境因子响应机制的研究,可为自然保护区水生态保护提供理论依据.

关键词：自然保护区溶解性有机质三维荧光光谱结构方程模型响应机制

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Large Time Behavior of Solutions to a 3D Keller-Segel-Stokes System Involving a Tensor-valued Sensitivity with Saturation

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Acta Mathematicae Applicatae Sinica 2023年第4期39卷 1032-1064页

作者： Yuan-yuan KE Jia-shan zheng School of Mathematics Renmin University of ChinaBeijing 100872China School of Mathematics and Statistics Science Yantai UniversityYantai 264005China

In this paper we deal with the initial-boundary value problem for the coupled Keller-Segel-Stokes system with rotational flux, which is corresponding to the case that the chemical is produced instead of consumed,■subject to the boundary conditions( n-n S(x, n, c) c) · ν = c · ν = 0 and u = 0, and suitably regular initial data(n0(x), c0(x), u0(x)), where ? ? R3is a bounded domain with smooth boundary ??. Here S is a chemotactic sensitivity satisfying |S(x, n, c)| ≤ CS(1 + n)-αwith some CS> 0 and α > 0. The greatest contribution of this paper is to consider the large time behavior of solutions for the system(KSS), which is still open even in the 2D case. We can prove that the corresponding solution of the system(KSS) decays to(■) exponentially, if the coefficient of chemotactic sensitivity is appropriately small. As a precondition to consider the asymptotic behavior, we also show the global existence and boundedness of the corresponding initial-boundary problem KSS with a simplified method. We find a new phenomenon that the suitably small coefficient CSof chemotactic sensitivity could benefit the global existence and boundedness of solutions to the model KSS.

关键词： Large time behavior Global existence Boundedness Keller-Segel-Stokes system

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Timely recognition of Amyand's hernia with appendicitis in infants

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World Journal of Pediatrics 2015年第4期11卷 392-394页

作者： Zhen Shen shan zheng Children's Hospital Fudan University399 Wanyuan RoadShanghai 201102China shanghai Key Laboratory of Birth Defect

Background:Amyand's hernia with acute appendicitis is rare in infants and is mostly delayed in diagnosis and treatment,resulting in a high ***:We presented two cases of infantile Amyand's hernia with acute ***:Early surgical interventions were performed and both patients recovered without ***:A practical strategy for this entity is to be aware of the rare disease and to perform early surgical exploration for suspected cases.

关键词： Amyand's hernia appendicitis infant morbidity

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Microstructure and Martensitic Transformation Behaviors of Explosively Welded NiTi/NiTi Laminates

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Chinese Journal of Aeronautics 2007年第2期20卷 168-171页

作者： YAN Zhu CUI Li-shan zheng Yan-jun Department of Materials Science and Engineering China University of Petroleum Beijing 102249 China

The study is a first attempt to prepare bulk NiTi/NiTi shape memory alloy （SMA） laminates with a macroscopic heterogeneous composition by explosive welding and investigate their microstructures and martensitic transformation behaviors. After explosive weld- ing, a perfect interfacial bonding between the two components and a reversible martensitic transformation are realized in the tandem. Results show achievement of a fine granular structure and the maximum value of microhardness near the welding interface because of the excessive cold plastic deformation and the high impact velocity during the explosive welding. Meanwhile, the effects of aging on the transformation of the welded tandem are investigated by differential scanning calorimeter （DSC） and subject to discussion. The trans- formation temperatures of NiTi/NiTi SMAs increase with the rise of the aging temperature. The experimental results indicate the shape memory properties of NiTi/NiTi SMA fabricated by explosive welding can be improved by optimizing the aging technology.

关键词： NiTi shape memory alloy explosive welding martensitic transformation

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Spherical Confinement Generates Entropic Force to Accelerate Polymer Chain Detachment

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Chinese Journal of Polymer Science 2024年第3期42卷 407-416,I0010页

作者： Yu-shan zheng Jian-Ping Zhou Yan Xu Kai Li Mechanical Engineering Xinjiang UniversityUrumqi 830002China

To understand the dynamic process of polymer detachment, it is necessary to determine the mean detachment time of a single breakable link, which is modeled as a spring. Normally, this time can be viewed as the escape of a Brownian particle from the potential well of the spring. However, as the free dangling length of the polymer chain increases, the conformational entropy of the chain is affected by geometric confinement. It means that the wall exerts a repulsive force on the chain, resulting in accelerated link detachment from a macroscopic perspective. In this work, we investigate the effect of entropy on the detachment rate in the case where the substrate is spherical. We demonstrate that spherical confinement accelerates chain detachment both inside and outside the sphere. An analytical expression for the mean detachment time of breakable links is given, which includes an additional pre-factor that is related to the partition function. Additionally, we analyze the expressions for entropic forces inside the sphere, outside the sphere, and on a flat wall, comparing their magnitudes to explain the difference in mean detachment time.

关键词： Polymer detachment Breakable link Entropic force Mean first passage time

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A Novel Scheduling Framework for Multi-Programming Quantum Computing in Cloud Environment

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Computers, Materials & Continua 2024年第5期79卷 1957-1974页

作者： Danyang zheng Jinchen Xv Feng Yue Qiming Du ZhihengWang zheng shan Information Engineering University Zhengzhou450001China

As cloud quantum computing gains broader acceptance,a growing quantity of researchers are directing their focus towards this ***,the rapid surge in demand for cloud-based quantum computing resources has led to a scarcity,which in turn hampers users from achieving optimal ***,cloud quantum computing service providers require a unified analysis and scheduling framework for their quantumresources and user jobs to meet the ever-growing usage *** paper introduces a new multi-programming scheduling framework for quantum computing in a cloud *** framework addresses the issue of limited quantum computing resources in cloud environments and ensures a satisfactory user *** introduces three innovative designs:1)Our framework automatically allocates tasks to different quantum backends while ensuring fairness among users by considering both the cloud-based quantum resources and the user-submitted tasks.2)Multi-programming mechanism is employed across different quantum backends to enhance the overall throughput of the quantum *** comparison to conventional task schedulers,our proposed framework achieves a throughput improvement of more than two-fold in the quantum cloud.3)The framework can balance fidelity and user waiting time by adaptively adjusting scheduling parameters.

关键词： Quantum computing scheduling multi-programming qubit mapping

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HCRVD: A Vulnerability Detection System Based on CST-PDG Hierarchical Code Representation Learning

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Computers, Materials & Continua 2024年第6期79卷 4573-4601页

作者： Zhihui Song Jinchen Xu Kewei Li zheng shan School of Cyberspace Security Information Engineering UniversityZhengzhou450001China

Prior studies have demonstrated that deep learning-based approaches can enhance the performance of source code vulnerability detection by training neural networks to learn vulnerability patterns in code ***,due to limitations in code representation and neural network design,the validity and practicality of the model still need to be ***,due to differences in programming languages,most methods lack cross-language detection *** address these issues,in this paper,we analyze the shortcomings of previous code representations and neural *** propose a novel hierarchical code representation that combines Concrete Syntax Trees(CST)with Program Dependence Graphs(PDG).Furthermore,we introduce a Tree-Graph-Gated-Attention(TGGA)network based on gated recurrent units and attention mechanisms to build a Hierarchical Code Representation learning-based Vulnerability Detection(HCRVD)*** system enables cross-language vulnerability detection at the *** experiments show that HCRVD surpasses many competitors in vulnerability detection *** benefits from the hierarchical code representation learning method,and outperforms baseline in cross-language vulnerability detection by 9.772%and 11.819%in the C/C++and Java datasets,***,HCRVD has certain ability to detect vulnerabilities in unknown programming languages and is useful in real open-source *** shows good validity,generality and practicality.

关键词： Vulnerability detection deep learning CST-PDG code representation tree-graph-gated-attention network cross-language

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Liver fibrosis in biliary atresia

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World Journal of Pediatrics 2019年第2期15卷 117-123页

作者： Wen-Jun Shen Gong Chen Min Wang shan zheng Department of Pediatric Surgery Children's Hospital of Fudan University399 Wanyuan RoadMinhang DistrictShanghai 201102China

Background Biliary atresia (BA) is the most common cause of obstructive jaundice in *** the Kasai procedure has greatly improved the progno sis,most patients still need liver transplantation (LT) for long-term *** pathogenesis of BA has not been fully clarified,and liver fibrosis in BA is far beyond biliary obstructive *** sources Literature reviews were underwent through *** inflammation,immune response,biliary epithelial-mesenchymal transition,matrix deposition,decompensated angiogenesis,and unique biliary structure development all contribute to the fibrosis *** evidences in such fields have been collected and form the backbone of this *** Interactions of the multiple pathways accelerate this *** Understanding the mechanisms of the liver fibrosis in BA may pave the way to improved survival after the Kasai procedure.

关键词： Liver fibrosis Biliary atresia Children

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