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Reducing the measurement errors in nonadiabatic holonomic quantum computers

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 64-70页

作者： Guo-fu xu Department of Physics Shandong University

Nonadiabatic holonomic quantum computers serve as the physical platform for nonadiabatic holonomic quantum *** quantum computation has entered the noisy intermediate-scale era, building accurate intermediate-scale nonadiabatic holonomic quantum computers is clearly necessary. Given that measurements are the sole means of extracting information, they play an indispensable role in nonadiabatic holonomic quantum computers. Accordingly, developing methods to reduce measurement errors in nonadiabatic holonomic quantum computers is of great importance. However, while much attention has been given to the research on nonadiabatic holonomic gates, the research on reducing measurement errors in nonadiabatic holonomic quantum computers is severely lacking. In this study, we propose a measurement error reduction method tailored for intermediate-scale nonadiabatic holonomic quantum computers. The reason we say this is because our method can not only reduce the measurement errors in the computer but also be useful in mitigating errors originating from nonadiabatic holonomic gates. Given these features,our method significantly advances the construction of accurate intermediate-scale nonadiabatic holonomic quantum computers.

关键词： quantum holonomy quantum computation measurement errors

不同光照周期对尼罗罗非鱼生物钟基因表达的影响

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农业生物技术学报 2022年第3期30卷 539-549页

作者：符徐泽邹芝英肖炜祝璟琳李大宇喻杰陈炳霖杨弘南京农业大学无锡渔业学院中国水产科学研究院淡水渔业研究中心/农业部淡水渔业和种质资源利用重点实验室

生物钟基因是控制昼夜节律的关键基因。光照是对生物钟影响最大的环境变量，光照周期的改变会导致生物钟基因表达模式变化，进一步影响生物的生活习性和发育繁殖等多项生理活动。为探究不同光照周期对尼罗罗非鱼(Oreochromis niloticus... 详细信息

生物钟基因是控制昼夜节律的关键基因。光照是对生物钟影响最大的环境变量，光照周期的改变会导致生物钟基因表达模式变化，进一步影响生物的生活习性和发育繁殖等多项生理活动。为探究不同光照周期对尼罗罗非鱼(Oreochromis niloticus)生物钟基因昼夜节律的影响，本研究共设置3种光照周期条件，光(L)暗(D)比分别为8 h光照和16 h黑暗(8L∶16D)、12 h光照和12 h黑暗(12L∶12D)及16 h光照和8 h黑暗(16L∶8D)，光照强度1 000 lx，光起始时间设定为计时器时间(zeitgeber time, ZT) 0 h，分析尼罗罗非鱼脑、肝脏和眼3种组织中生物钟关键基因：脑肌肉芳香烃受体核转位蛋白样因子1 (brain and muscle arntlike 1, bmal1)、昼夜节律活动输出周期故障因子a (circadian locomotor output cycles kaput a, clocka)、隐花色素5 (cryptochrome 5, cry5)和周期蛋白1b (period 1b, per1b)的昼夜表达规律。结果显示，正常光照条件下(12L∶12D)，脑、肝脏和眼中bmal1、clocka、cry5和per1b表现出明显的昼夜节律性；正常光照条件下(12L∶12D)，正调控基因bmal1和clocka峰值相位肝脏中(ZT 13.98 h, ZT 12.02 h)，早于脑中(ZT 17.31 h, ZT14.37 h)，负调控基因cry5和per1b峰值相位肝脏中(ZT 7.28 h, ZT 0.92 h)，晚于脑中(ZT 4.66 h, ZT 0.76 h)；长光照(16L∶8D)导致脑中clocka峰值相位延迟，肝脏中cry5振幅增大；短光照(8L∶16D)使脑中per1b、肝脏中bmal1和眼中cry5振幅变大。上述结果表明，尼罗罗非鱼具有与其他鱼类相似的生物钟系统，不同组织的生物节律不完全一致；光照周期会影响生物钟基因的表达，且各组织的生物钟基因响应有差异。本研究为深入了解尼罗罗非鱼生物钟系统的调节机制提供参考依据。

关键词：光照周期尼罗罗非鱼昼夜节律生物钟基因

Design of A Novel Wheel-Legged Robot with Rim Shape Changeable Wheels

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Chinese Journal of Mechanical Engineering 2023年第6期36卷 62-72页

作者： ze fu Hao xu Yinghui Li Weizhong Guo State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong UniversityShanghai 200240China

The wheel-legged hybrid structure has been utilized by ground mobile platforms in recent years to achieve good mobility on both flat surfaces and rough ***,most of the wheel-legged robots only have one-directional obstacle-crossing *** the motion,most of the wheel-legged robots’centroid fluctuates violently,which damages the stability of the ***’s more,many designs of the obstacle-crossing part and transformation-driving part of this structure are highly coupled,which limits its optimal performance in both *** paper presents a novel wheel-legged robot with a rim-shaped changeable wheel,which has a bi-directional and smooth obstacle-crossing *** on the kinematic model,the geometric parameters of the wheel structure and the design variables of the driving four-bar mechanism are optimized *** kinetostatics model of the mobile platform when climbing stairs is established to determine the body length and angular velocity of the driving wheels.A pro-totype is made according to the optimal *** show that the prototype installed with the novel transformable wheels can overcome steps with a height of 1.52 times of its wheel radius with less fluctuation of its centroid and performs good locomotion capabilities in different environments.

关键词： Mobile platform Transformable wheel-legged robot Kinematics analysis Mechanical design Obstacle

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轮毂电动机驱动车辆并联式复合制动策略

江苏大学学报（自然科学版） 2025年第1期46卷 9-17页

作者：付翔肖帅徐超武汉理工大学汽车工程学院湖北武汉430070

基于并联式轮毂电动机驱动实车构型,分析影响制动能量回收效率的主要因素,采用联邦卡尔曼滤波纵向车速估计算法,提出了三层式复合制动控制策略.该策略中的制动决策层根据踏板输入信号和行驶状态来识别制动工况,并进入相应的制动模式.制... 详细信息

基于并联式轮毂电动机驱动实车构型,分析影响制动能量回收效率的主要因素,采用联邦卡尔曼滤波纵向车速估计算法,提出了三层式复合制动控制策略.该策略中的制动决策层根据踏板输入信号和行驶状态来识别制动工况,并进入相应的制动模式.制动控制层根据制动决策层的指令,在常规制动工况下通过粒子群优化(PSO)算法优化前、后轮电制动力矩分配,实现电池有效回收效率最大化;紧急制动工况下,通过模糊自整定PID算法实现车辆在不同附着路面上各轮滑移率的安全有效控制,优化了制动防抱死控制的鲁棒性,提高制动安全性.制动执行层响应制动控制层的指令,设计了电制动补偿机制,以迅速补偿调节各轮轮缸的压力误差,提高车辆制动稳定性.最后实车验证了该复合控制策略的有效性.

关键词：轮毂电动机驱动车辆并联式复合制动粒子群优化制动能量回收模糊自整定PID

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Lipomatous ependymoma with ZFTA:RELA fusion-positive:A case report

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World Journal of Clinical Cases 2025年第1期13卷 48-55页

作者： Xiao-Yu Zhao Juan-Han Yu Yi-Hua Wang Yi-Xin Liu Lu xu Lin fu Ning Yi China Medical University The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Department of Pathology The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Anshan Cancer Hospital Anshan 114000Liaoning ProvinceChina

BACKGROUND Ependymoma with lipomatous differentiation is a rare type of *** ZFTA fusion-positive supratentorial ependymoma is a novel tumor type in the 2021 World Health Organization classification of central nervous system *** fusion-positive lipomatous ependymoma has not been reported to *** SUMMARY We reported a case of a 15-year-old Chinese male who had a sudden convulsion lasting approximately six *** resonance imaging showed a round cystic shadow of approximately 1.9 cm×1.5 cm×1.9 cm under the right parieto-occipital *** examination showed characteristic perivascular pseudorosettes and adipose differentiation in the ***-chemical staining showed that the tumor cells were negative for cytokeratin,NeuN,Syn and p53,but positive for GFAP,vimentin and S-100 ***-ficant punctate intracytoplasmic EMA immunoreactivity was *** level of Ki-67 was about 5%.Genetic analysis revealed ZFTA:RELA fusion.A cranio-tomy with total excision of the tumor was *** follow-up time was 36 months,no evidence of disease recurrence was found in magnetic resonance *** Based on these findings,the patient was diagnosed as a ependymoma with ZFTA fusion and lipomatous *** case report provides information on the microscopic morphological features of ependymoma with ZFTA fusion and lipomatous differentiation,which can help pathologists to make a definitive diagnosis of this tumor.

关键词： Ependymoma Lipomatous Molecular classification Supratentorial ZFTA:RELA fusion Case report

Solar evaporation for simultaneous oil-water separation and electricity generation with Janus wood-based absorbers

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Frontiers of Environmental Science & Engineering 2024年第2期18卷 13-23页

作者： Yue Yang ze fu Qi Zhang Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science&TechnologyNanjing 210094China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced MicrostructuresCollege of Engineering and Applied SciencesKey Laboratory of Intelligent Optical Sensing and Manipulation(Ministry of Education)Jiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210093China

Oily wastewater from ocean oil spills endangers marine ecosystems and human health. Therefore, developing an effective and sustainable solution for separating oil-water mixtures is urgent. Interfacial solar photothermal evaporation is a promising approach for the complete separation of two-phase mixtures using only solar energy. Herein, we report a carbonized wood-based absorber with Janus structure of comprising a hydrophobic top-layer and an oleophobic bottom-layer for simultaneous solar-driven oil-water separation and electricity generation. Under sunlight irradiation, the rapid evaporation of seawater will induce a separation of oil-water mixtures, and cause a high salt concentration region underlying the interface, while the bottom “bulk water” maintains in a low salt concentration, thus forming a salinity gradient. Electricity can be generated by salinity gradient power. Therefore, oil-water separation efficiency of > 99% and derived extra electricity power of ~0.1 W/m2 is achieved under solar radiation, demonstrating the feasibility of oil-water separation and electricity production synchronously directly using solar energy. This work provides a green and cost-effective path for the separation of oil-water mixtures.

关键词： Oily wastewater Carbonized wood Salinity gradient Electricity generation Solar irradiation

Static recrystallization behaviors and mechanisms of 7Mo super-austenitic stainless steel with undissolved sigma precipitates during double-stage hot deformation

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Journal of Iron and Steel Research International 2024年第2期31卷 475-487页

作者： Shi-guang xu Jin-shan He Run-ze Zhang fu-cheng Zhang Xi-tao Wang Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing100083China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao066004HebeiChina Shandong Provincial Key Laboratory for High Strength Lightweight Metallic Materials Advanced Materials InstituteQilu University of Technology(Shandong Academy of Science)Jinan250353ShandongChina

Static recrystallization(SRX)behaviors and corresponding recrystallization mechanisms of 7Mo super-austenitic stainless steel were studied under different deformation *** order of influence of deformation parameters on static recrystallization behaviors,from high to low,is followed by temperature,first-stage strain and strain ***,the effect of holding time on static recrystallization behaviors is significantly controlled by *** addition,with the increase in temperature from 1000 to 1200°C,the static recrystallization mechanism evolves from discontinuous static recrystallization and continuous static recrystallization(cSRX)to metadynamic recrystallization and cSRX,and finally to *** cSRX exists at all *** is because high stacking fault energy(56 mJ m−2)promotes the movement of dislocations,making the deformation mechanism of this steel is dominated by planar slip of *** undissolved sigma precipitates promote static recrystallization through particle-stimulated ***,small strain-induced precipitates at grain boundaries hinder the nucleation of conventional SRX and the growth of recrystallized grains,while the hindering effect decreases with the increase in temperature.

关键词： 7Mo super-austenitic stainless steel Double-stage hot deformation Conventional static recrystallization Metadynamic recrystallization Strain-induced precipitation

Multi-Source Data Privacy Protection Method Based on Homomorphic Encryption and Blockchain

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Computer Modeling in Engineering & Sciences 2023年第7期136卷 861-881页

作者： ze xu Sanxing Cao State Key Laboratory of Media Convergence and Communication Communication University of ChinaBeijing100024China

Multi-Source data plays an important role in the evolution of media *** fusion processing enables the further mining of data and utilization of data value and broadens the path for the sharing and dissemination of media ***,it also faces serious problems in terms of protecting user and data *** privacy protectionmethods have been proposed to solve the problemof privacy leakage during the process of data sharing,but they suffer fromtwo flaws:1)the lack of algorithmic frameworks for specific scenarios such as dynamic datasets in the media domain;2)the inability to solve the problem of the high computational complexity of ciphertext in multi-source data privacy protection,resulting in long encryption and decryption *** this paper,we propose a multi-source data privacy protection method based on homomorphic encryption and blockchain technology,which solves the privacy protection problem ofmulti-source heterogeneous data in the dissemination ofmedia and reduces ciphertext processing *** deployed the proposedmethod on theHyperledger platformfor testing and compared it with the privacy protection schemes based on k-anonymity and differential *** experimental results showthat the key generation,encryption,and decryption times of the proposedmethod are lower than those in data privacy protection methods based on k-anonymity technology and differential privacy *** significantly reduces the processing time ofmulti-source data,which gives it potential for use in many applications.

关键词： Homomorphic encryption blockchain technology multi-source data data privacy protection privacy data processing

Ultrathin Carbon Films Prepared by Negative Cluster-Beam Technology

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Chinese Physics Letters 2012年第7期29卷 265-267页

作者： ZHANG Zao-Di WANG ze-Song WANG Shi-xu fu De-Jun Accelerator Laboratory School of Physics and Technology and Key Laboratory of Artificial Micro-and Nano-Materials of Ministry of Education of ChinaWuhan UniversityWuhan 430072

We develop a miniaturized chamber installed on a tandetron accelerator into which negative ions of small carbon clusters are *** clusters C-1-C-10 are obtained with beam currents of 1-104 nA at energies of l0-20keV.C-2 beams of 0.2μA are used to directly deposit carbon films on SiO_(2)/Si *** of ultrathin carbon films are demonstrated by Raman scattering,which reveals the evolution of the graphitic peak (1550cm-2) with deposition time.

关键词： carbon scattering Carbon