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西安市高陵区土壤重金属污染现状分析

安徽农业科学 2025年第4期53卷 47-52页

作者：殷宗敏殷宗奇何文熹中国地质调查局武汉地质调查中心湖北武汉430205 东北林业大学计算机与控制工程学院黑龙江哈尔滨150040

通过分析高陵区土壤中汞(Hg)、砷(As)、镉(Cd)、铬(Cr)、铅(Pb)含量,采用单因子污染指数法进行污染等级划分,并进行不同元素间相关分析。结果表明:高陵区Hg、As、Cd、Pb含量正态分布呈现左偏,Cr含量呈现右偏。各元素含量排序为Cr>Pb>As>... 详细信息

通过分析高陵区土壤中汞(Hg)、砷(As)、镉(Cd)、铬(Cr)、铅(Pb)含量,采用单因子污染指数法进行污染等级划分,并进行不同元素间相关分析。结果表明:高陵区Hg、As、Cd、Pb含量正态分布呈现左偏,Cr含量呈现右偏。各元素含量排序为Cr>Pb>As>Cd>Hg。Hg元素存在分布中心,含量由中心向周边递减;As和Cr元素不存在分布中心。Hg分布存在安全和轻污染级,As分布存在安全和轻污染级,Cd分布存在安全、轻污染和中污染级,Cr分布存在安全和轻污染级,Pb分布存在安全、轻污染和中污染级,其中Hg、Cd、Pb的分布特征较相似,在药惠乡部分区域均存在较重污染。Hg与As存在中度负相关,与Cd、Cr存在中度正相关,与Pb存在弱正相关性;As与Cd、Cr均存在弱负相关性;Cd与Cr存在弱正相关,与Pb均存在强正相关性;Cr与Pb存在中度正相关。综上,高陵区土壤存在重金属污染,应加强治理。

关键词：土壤重金属单因子污染指数法安全分级空间分析相关性高陵区

Efficiently simulating the work distribution of multiple identical bosons with boson sampling

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Frontiers of physics 2024年第3期19卷 197-206页

作者： Wen-qiang Liu Zhang-qi yin Center for Quantum Technology Research and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements(MOE) School of PhysicsBeijing Institute of TechnologyBeijing 100081China

Boson sampling has been theoretically proposed and experimentally demonstrated to show quantum computational ***,it still lacks the deep understanding of the practical applications of boson *** we propose that boson sampling can be used to efficiently simulate the work distribution of multiple identical *** link the work distribution to boson sampling and numerically calculate the transition amplitude matrix between the single-boson eigenstates in a one-dimensional quantum piston system,and then map the matrix to a linear optical network of boson *** work distribution can be efficiently simulated by the output probabilities of boson sampling using the method of the grouped probability *** scheme requires at most a polynomial number of the samples and the optical *** work opens up a new path towards the calculation of complex quantum work distribution using only photons and linear optics.

关键词： quantum simulation quantum work distribution boson sampling linear optic

Tail Display Intensity is Restricted by Food Availability in an Asian Agamid Lizard(Phrynocephalus vlangalii)

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Asian Herpetological Research 2020年第3期11卷 240-248页

作者： Xinxin ZHU Zhongyi YAO yin qi Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041SichuanChina University of Chinese Academy of Sciences Beijing 101409China

To ascertain the function of signals,we have to first uncover the reasons behind signal *** are several potential driving forces,including background noise,predation cost,receiver perception,and energy *** energy limitation hypothesis assumes that individuals trade off signal intensity and energy expenditure according to resource condition,while variation of signal intensity likely associates with food *** hypothesis has been evidenced by a great number of researches on vocal signals,but no studies evaluated the influence of food availability on motion visual signal in *** we used an Asian agamid lizard Phr ynocephalus vlangalii and examined the effect of food availability on tail display *** designed two food restriction treatments as well as a nature control treatment,and quantified individual tail display speed and display duration under different food availability *** with our prediction,our results showed that males significantly reduced their average tail display speed and maximum display speed in both food restriction treatments when compared to nature control ***,our study provides direct evidence that lizards would trade off their display intensity according to the food condition,suggesting tail display is energetically costly and likely provides honest information on individual body condition and resource hold potential.

关键词： animal communication energy limitation lizard signal variation tail display

GenAI重塑课堂活动:应用路径与实践样态

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现代教育技术 2025年第2期35卷 26-34页

作者：黄星云焦建利曾君李琪茵华南师范大学教育信息技术学院广东广州510631

随着智能技术的不断发展,生成式人工智能(Generative Artificial Intelligence,GenAI)在教育领域的应用日益广泛,这为课堂教学带来了新的可能,然而当前研究较少从微观视角分析GenAI参与的课堂活动发生了何种变化。基于此,文章通过案例... 详细信息

随着智能技术的不断发展,生成式人工智能(Generative Artificial Intelligence,GenAI)在教育领域的应用日益广泛,这为课堂教学带来了新的可能,然而当前研究较少从微观视角分析GenAI参与的课堂活动发生了何种变化。基于此,文章通过案例分析法挑选国内外16个教学视频进行分析,提出了四条GenAI支持下的课堂活动应用路径,进而通过梳理活动主体和交互行为,提炼出六种GenAI支持下的课堂活动实践样态。研究发现,GenAI能够丰富课堂交互,担任多种课堂角色,并在不同认知层次的课堂活动上提供支持,从而促使教师结合学科背景和教学目标,有针对性地设计GenAI辅助的课堂活动,以充分发挥其潜力,构建人机协同的课堂。文章通过研究,旨在刻画GenAI如何重塑课堂活动,为教育工作者提供理论参考与实践启示,助力探索未来课堂教学的新方向。

关键词：生成式人工智能课堂活动课堂实践活动设计

Specification and Verification of the Zab Protocol with TLA+

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Journal of Computer Science & Technology 2020年第6期35卷 1312-1323页

作者： Jia-qi yin Hui-Biao Zhu Yuan Fei Shanghai Key Laboratory of Trustworthy Computing East China Normal UniversityShanghai 200062China College of Information Mechanical and Electrical EngineeringShanghai Normal UniversityShanghai 200234China

ZooKeeper Atomic Broadcast (Zab) is an atomic broadcast protocol specially designed for ZooKeeper, which supports additional crash recovery. This protocol actually has been widely adopted by famous Internet companies, but there are few studies on the correctness and credibility of the Zab protocol, and thus we utilize formal methods to study the correctness. In this paper, Zab, Paxos and Raft are all analyzed and compared to help better understand the Zab protocol. Then we model the Zab protocol with TLA+ and verify three properties abstracted from the specification by the model checker TLC, including two liveness properties and one safety property. The final experimental results can prove that the design of the protocol conforms to the original requirements. This paper makes up for the analysis of formal methods in the Zab protocol.

关键词： Zab protocol TLA+ specification verification

Harmoniousness analysis of total amount control of water use

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Water Science and Engineering 2014年第1期7卷 49-59页

作者： qian-qi yin Guo-hua FANG College of Water Conservancy and Hydropower Engineering Hohai University

Based on the fundamental principles of total amount control of water use, the harmony theory was used in this study to develop a concept of the degree of harmony of total amount control of water use. Based on this concept, the harmoniousness of total amount control of water use was analyzed in terms of the supply and demand of water resources, water resources management, water use benefits, and water-saving level. An evaluation index system of the degree of harmony of total amount control of water use was established, and a method for calculation of the degree of harmony of total amount control of water use was developed based on the analytic hierarchy process （AHP） and fuzzy comprehensive analysis （FCA） methods. The new evaluation index system was applied to a certain area in Jiangsu Province, China. The degree of harmony of total amount control of water use over this area was calculated for different years. Results indicate that the evaluation index system and calculation method proposed in this study are feasible, and such a harmoniousness analysis can provide scientific references for the strict water resources management system that will be implemented in China in the near future.

关键词： total amount control of water usel degree of harmony evaluation index system quantification method analytic hierarchy process method fuzzy comprehensive analysis method

Tail Waving Speed Affects Territorial Response in the Toad-headed Agama Phrynocephalus vlangalii

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Asian Herpetological Research 2018年第3期9卷 182-187页

作者： Xia qiU Jinzhong FU yin qi Chengdu Institute of Biology Chinese Academy of Sciences

Territorial response affects a resident＇s access to resources and mates, but the response level is likely flexible

关键词： tail display territorial response 3D animation playback Phrynocephalus vlangalii

Levitated optomechanics:From single to many-body physics

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Fundamental Research 2023年第1期3卷 90-92页

作者： Zhang-qi yin Center for Quantum Technology Research and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements(MOE) School of PhysicsBeijing Institute of TechnologyBeijing 100081China

The levitated optomechanics,because of its ultra-high mechanical Q>1010,is considered to be one of the best testbeds for macroscopic quantum *** this perspective,we give a brief review on the development of the levitated optomechanics,focusing on the macroscopic quantum phenomena,and the applications in quantum precision *** levitated nanodiamond with built-in nitrogen-vacancy centers is discussed as an ***,we discuss the future dirctions of the levtated optomechanics,such as the space-based experiments,the arrays of levitated optomechanics and applications in quantum simulation.

关键词： Levitated optomechanics Quantum precision measurement Optical tweezers Macroscopic quantum superpositions Quantum simulation

Nonadiabatic dynamics and geometric phase of an ultrafast rotating electron spin

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Science Bulletin 2019年第6期64卷 380-384页

作者： Xing-Yan Chen Tongcang Li Zhang-qi yin Center for Quantum Information Institute for Interdisciplinary Information Sciences Tsinghua University Max-Planck-Institut für Quantenoptik Fakult?t für Physik Ludwig-Maximilians-Universit?t München Department of Physics and Astronomy Purdue University School of Electrical and Computer Engineering Purdue University Purdue Quantum Center Purdue University Birck Nanotechnology Center Purdue University

The spin in a rotating frame has attracted a lot of attentions recently,as it deeply relates to both fundamental physics such as pseudo-magnetic field and geometric phase,and applications such as gyroscopic ***,previous studies only focused on adiabatic limit,where the rotating frequency is much smaller than the spin *** we propose to use a levitated nano-diamond with a built-in nitrogen-vacancy(NV)center to study the dynamics and the geometric phase of a rotating electron spin without adiabatic *** find that the transition between the spin levels appears when the rotating frequency is comparable to the spin frequency at zero magnetic *** we use Floquet theory to numerically solve the spin energy spectrum,study the spin dynamics and calculate the geometric phase under a finite magnetic field,where the rotating frequency to induce resonant transition could be greatly reduced.

关键词： Nitrogen-vacancy center Nonadiabatic geometric phase Ultrafast rotor Rabi oscillation Optomechanics