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The coupling control of biological precursors and environmental factors onβ-carotane enrichment in alkaline lacustrine source rocks:A case study from the Fengcheng formation in the western Junggar Basin,NW China

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Petroleum Science 2024年第2期21卷 836-854页

作者： mao-Guo Hou Ming Zha Hua Liu hai-lei Liu Jiang-Xiu Qu Ablimit Imin Xiu-Jian Ding Zhong-Fa Jiang School of Geosciences China University of PetroleumQingdaoShandong266580China Research Institute of Exploration and Development Xinjiang Petroleum Administration BureauKaramayXinjiang834000China

The organic-rich mudstones and dolostones of the Permian Fengcheng Formation(Fm.)are typically alkaline lacustrine source rocks,which are typified by impressively abundantβ-*** β-carotane has been well acknowledged as an effective indicator of biological sources or depositional ***,the specific biological sources of β-carotane and the coupling control of biological sources and environmental factors on the enrichment of β-carotane in the Fengcheng *** *** on a comprehensive investigation of the bulk,molecular geochemistry,and organic petrology of sedimentary rocks and the biochemistry of phytoplankton in modern alkaline lakes,we proposed a new understanding of the biological precursors of β-carotane and elucidated the enrichment mechanism of β-carotane in the Fengcheng *** results show that the biological precursors crucially control the enrichment of β-carotane in the Fengcheng *** haloalkaliphilic cyanobacteria are the primary biological sources of β-carotane,which is suggested by a good positive correlation between the 2-methylhopane index,7-+8-methyl heptadecanes/C_(max),C_(29%),and β-carotane/C_(max)in sedimentary rocks and the predominance of cyanobacteria with abundantβ-carotene in modern alkaline *** enrichment of β-carotane requires the reducing condition,and the paleoredox state that affects the enrichment of β-carotane appears to have a *** paleoclimate conditions do not considerably impact the enrichment of β-carotane,but they have some influence on the water's paleosalinity by affecting evaporation and *** it does not directly affect the enrichment of β-carotane in the Fengcheng Fm.,paleosalinity does have an impact on the cyanobacterial precursor supply and the preservation conditions.

关键词： β-carotane enrichment Cyanobacterial input Environmental impact Alkaline lacustrine source rocks The Fengcheng formation

An optimized time-adaptive aerothermal coupling calculation method for aerothermal analysis of disc cavity system

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Chinese Journal of Aeronautics 2024年第9期37卷 164-177页

作者： Shuai BI Junkui mao lei WANG Feng HAN College of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 20016China AECC Aeroengine Control System Institute Wuxi 214063China Integrated Energy Institute Nanjing University of Aeronautics and AstronauticsNanjing 210016China

In order to further achieve the balance between the calculation accuracy and efficiency of the transient analysis of the aero-engine disc cavity system,an Optimized Time-adaptive Aerother-mal Coupling calculation(OTAC)method has been *** combines one-dimensional tran-sient calculation of air system,Conventional Sequence Staggered(CSS)method,Time-adaptive Aerothermal Coupling calculation(TAC)method and differential evolution optimization algorithm to obtain an efficient and high-precision aerothermal coupling calculation method of air *** both the heat conduction in the solid domain and the flow in the fluid domain as unsteady states in the OTAC,the interaction of fluid-solid information within a single coupling time step size was implemented based on the CSS ***,the coupling time step size was automatically adjusted with the number of iterations by using the Proportional-Integral-Deri vative(PID)*** show that when compared with the traditional loosely coupling method with a fixed time step size,the computational accuracy and efficiency of the OTAC method are improved by 8.9%and 30%,*** with the tight coupling calculation,the OTAC method can achieve a speedup of 1 to 2 orders of magnitude,while the calculation error is maintained within 6.1%.

关键词： Air system 1D-3D coupling Conjugate heat transfer Transient calculation Adaptive time step size

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大国战略竞争背景下美国在联合国的对华政策

太平洋学报 2025年第1期33卷 11-25页

作者：毛瑞鹏上海国际问题研究院上海200233

多边机构是美国实施大国战略竞争政策的重要一环。美国在联合国对华实施打压遏制政策,是其大国竞争战略的延伸,也是其奉行“美国例外主义”和将联合国“战场化”的突出体现。美国行政当局、国会及战略界均参与到有关在联合国对华打压遏... 详细信息

多边机构是美国实施大国战略竞争政策的重要一环。美国在联合国对华实施打压遏制政策,是其大国竞争战略的延伸,也是其奉行“美国例外主义”和将联合国“战场化”的突出体现。美国行政当局、国会及战略界均参与到有关在联合国对华打压遏制政策的设计之中,对中国在联合国影响力的提升作出系统性反应,并重点寻求打击中国的规范倡导、阻遏中国的人才输送、抹黑中国的国家形象、瓦解中国的伙伴关系。美国的大国竞争政策破坏了联合国正常的合作氛围和运作秩序,加剧了联合国的动荡和分裂,阻碍了全球治理的进程和效能。面对美国压力,中国坚持真正的多边主义,坚定维护发展中国家的合法权益,推动构建公正合理的国际秩序。展望未来,更好地发挥联合国对大国关系的调节功能对于维护国际和平与稳定具有重要意义和价值。

关键词：美国中国联合国大国竞争多边主义

Subspace detection for range-spread target to suppress interference:exploiting persymmetry in non-homogeneous scenario

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Journal of Systems Engineering and Electronics 2022年第1期33卷 60-71页

作者： GAO Yongchan mao Linlin ZHU Shengqi ZUO lei Department of Electronic Engineering Xidian UniversityXi’an 710071China Institute of Acoustics Chinese Academy of SciencesBeijing 100190China National Laboratory of Radar Signal Processing Xidian UniversityXi’an 710071China

This paper deals with subspace detection for rangespread target in non-homogeneous clutter with unknown covariance matrix where structured interference is presented in the received *** exploiting the persymmetry of the clutter covariance matrix,we propose two adaptive target detectors,which are referred to as persymmetric subspace Rao to suppress interference and persymmetric subspace Wald to suppress interference("PS-Rao-I"and"PS-Wald-I"),*** persymmetry-based design brings in the advantage of easy implementation for small training sample *** signal flow analysis of the two detectors shows that the PS-Rao-I rejects interference and integrates signals successively through separated matrix projection,while the PS-Wald-I jointly achieves interference elimination and signal combination via oblique *** addition,both detectors are shown to be constant false alarm rate detectors,significantly improving the detection performance with other competing detectors under the condition of limited training.

关键词： adaptive detection range-spread target persymmetric structure Rao test Wald test

Intelligent interaction system based on multimodal conformal triboelectric nanogenerator patch for disabled sports and life

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Science China(Technological Sciences) 2025年第2期68卷 290-305页

作者： Yuzhang WEN Mengqi ZHANG Zhenning XIE Zida AN Bing LIU Fengxin SUN Tianming ZHAO Zuojun YU Fei WANG Yupeng mao Physical Education Department Northeastern UniversityShenyang 110819China Faculty of Robot Science and Engineering Northeastern UniversityShenyang 110819China China Ice Sports College Beijing Sport UniversityBeijing 100084China State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016China Criminal Investigation Police University of China Shenyang 110035China

Intelligent interaction technology based on advanced sensing units has become a research *** this paper,an intelligent interaction system(IIS)based on a multimodal conformal triboelectric nanogenerator patch(MCTP)is reported for sports monitoring and life promotion of the *** IIS consists of a cloud-based smart sports recognition program and a smart life *** porous micro-reinforced structure of polyurethane(PU)Sponge&Ecoflex,and the surface modification of PTFE by coating it with MXene endows the MCTP with excellent electrical *** shows good angle and force sensitivities of 1.1 V/°and 1.61 V/N,respectively,and has an ultra-fast response time of 15 ms,meeting the needs of human motion *** MCTP can also capture the mechanical energy,producing a maximum output power of 139μ*** with the commercial inertial measuring unit(IMU),the MCTP shows better consistency in human joint angle sensing.A precise analysis of wheelchair curling sports monitoring points is achieved by combining the MCTP and the human anatomy *** cloud-based smart sports recognition program utilizes machine learning to achieve visual feedback on the three throwing technologies of draw,takeout and *** addition,the developed smart life application uses a highsensitivity MCTP-sensor array design to achieve a variety of smart home interactions through simple finger ***,the IIS integrates the three major functions of smart sports sensing,energy capture,and smart home control,providing important application prospects in the fields of smart sports and human-computer interaction for the disabled.

关键词： triboelectric nanogenerator machine learning smart sports smart home human-computer interaction

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Evaluating the usage of fault localization in automated program repair:an empirical study

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Frontiers of Computer Science 2021年第1期15卷 53-67页

作者： Deheng YANG Yuhua QI Xiaoguang mao Yan lei College of Computer National University of Defense TechnologyChangsha 410073China Laboratory of Software Engineering for Complex Systems Changsha 410073China Beijing Institute of Tracking and Communication Technology Beijing 100094China School of Big Data&Software Engineering Chongqing UniversityChongqing 400044China

Fault localization techniques are originally proposed to assist in manual debugging by generally producing a rank list of suspicious *** the increasing popularity of automated program repair,the fault localization techniques have been introduced to effectively reduce the search space of automated program *** developers who mainly focus on the rank information,current automated program repair has two strategies to use the fault localization information:suspiciousness-first algorithm(SFA)based on the suspiciousness accuracy and rank-first algorithm(RFA)relying on the rank ***,despite the fact that the two different usages are widely adopted by current automated program repair and may result in different repair results,little is known about the impacts of the two strategies on automated program *** this paper we empirically compare the performance of SFA and RFA in the context of automated program ***,we implement the two strategies and six well-studied fault localization techniques into four state-of-the-art automated program repair tools,and then use these tools to perform repair experiments on 60 real-world bugs from *** study presents a number of interesting findings:RFA outperforms SFA in 70.02%of cases when measured by the number of candidate patches generated before a valid patch is found(NCP),while SFA performs better in parallel repair and patch diversity;the performance of SFA can be improved by increasing the suspiciousness accuracy of fault localization techniques;finally,we use SimFix that deploys SFA to successfully repair four extra Defects4J bugs which cannot be repaired by SimFix originally using *** observations provide a new perspective for future research on the usage and improvement of fault localization in automated program repair.

关键词： automated program repair fault localization empirical study

Performance Analysis and Prediction of Double-Server Polling System Based on BP Neural Network

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Chinese Journal of Electronics 2020年第6期29卷 1046-1053页

作者： YANG Zhijun mao lei GAN Jianhou DING Hongwei School of Information Science and Technology Yunnan University Educational Instruments and Facilities Service Center Educational Department of Yunnan Province Key Laboratory of Education Informalization for Nationalities of Ministry of Education Yunnan Normal University

To solve the poor performance of the single-server polling system in high traffic and the complex analysis of the multi-server polling system,a synchronous double-server polling system is proposed,and its performance is analyzed using a Backpropagation(BP) neural network prediction *** data are processed and analyzed,and a three-layer multiinput single-output BP network model is constructed to predict the performance of the polling system under different arrival rates of information *** the prediction stage,first,the data are processed and the average queue length under different information arrival rates is used to form a ***,a multiinput single-output BP neural network is constructed for *** results show that the algorithm can accurately predict the performance of the double-server polling system,thereby facilitating research regarding polling systems.

关键词： backpropagation neural nets queueing theory three-layer multiinput single-output BP network model prediction stage information arrival rates multiinput single-output BP neural network performance analysis single-server polling system complex analysis multiserver polling system synchronous double-server polling system backpropagation neural network prediction algorithm information packets Polling system BP neural network Prediction Average queue length Long-short term memory (LSTM)

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马克思共产主义思想演进的内在意蕴

思想理论教育导刊 2025年第1期 33-41页

作者：毛华兵华中师范大学马克思主义学院

共产主义思想是马克思主义作为无产阶级和人类解放学说的重要组成部分，伴随着马克思对人类社会发展规律的认识而发展演进。马克思的共产主义思想在《1844年经济学哲学手稿》与《德意志意识形态》及其后的著作之间出现了明显的变化，即... 详细信息

共产主义思想是马克思主义作为无产阶级和人类解放学说的重要组成部分，伴随着马克思对人类社会发展规律的认识而发展演进。马克思的共产主义思想在《1844年经济学哲学手稿》与《德意志意识形态》及其后的著作之间出现了明显的变化，即脱离了费尔巴哈人本主义和思辨哲学的色彩而走向成熟。但马克思共产主义思想的这一变化并不意味着断裂，而是经历了一个思想发展的过程，是马克思共产主义思想的科学性和价值性相统一的表现。把握这一实质，对于更加准确地领悟马克思的共产主义思想具有重要的意义。

关键词：马克思共产主义思想唯物史观科学性价值性

弯曲时空下的Aubry-André-Harper动量态链

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物理学报 2025年第2期74卷 75-83页

作者：毛一屹戴汉宁中国科学技术大学物理学院合肥微尺度物质科学国家研究中心合肥230026 中国科学技术大学中国科学院量子信息与量子科技创新研究院上海量子科学研究中心上海201315 合肥国家实验室合肥230088

Anderson局域化是凝聚态物理中一个影响深远的现象,它代表了由无序引发的本征态的根本性转变.本文提出了一个基于超冷原子动量态晶格系统的实验方案,用以实现弯曲时空下的Aubry-André-Harper(AAH)模型,并研究其中的Anderson局域化.得... 详细信息

Anderson局域化是凝聚态物理中一个影响深远的现象,它代表了由无序引发的本征态的根本性转变.本文提出了一个基于超冷原子动量态晶格系统的实验方案,用以实现弯曲时空下的Aubry-André-Harper(AAH)模型,并研究其中的Anderson局域化.得益于每对相邻动量态之间耦合的单独可操控性,动量态晶格中的耦合强度可以被编辑成幂律位置依赖的形式J_(n)∝n^(σ),从而能够有效模拟弯曲时空.动量态晶格中波包演化的数值计算结果表现出初始格点依赖的局域化性质,符合理论预测的相分离现象.通过分析波包演化动力学数据,可以观测到相分离临界格点的移动.同时,本文还提出了通过调制时空弯曲参数σ来制备本征态的方案,并在动量态晶格中进行了数值仿真.最后,在不同准周期调制相位下制备能谱中所有本征态,分析了本征态的局域化性质,验证了在能谱中共存的局域相、延展相和摇摆相.本文为在实验中研究弯曲时空下的Anderson局域化物理提供了新的可行途径.

关键词： Anderson 局域化弯曲时空超冷原子动量态晶格

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