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数字经济助推高等教育高质量发展:理论机制与实证检验

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黑龙江高教研究 2025年第2期43卷 44-53页

作者：蔡文伯周子晴石河子大学新疆石河子832000 塔里木大学新疆阿拉尔843300

基于2011—2021年中国31个省份的面板数据,采用双向固定效应模型、面板门槛模型和空间杜宾模型检验数字经济对高等教育高质量发展的影响。研究发现:数字经济对高等教育高质量发展具有正向促进作用,具体看对高等教育要素、能力和功能等... 详细信息

基于2011—2021年中国31个省份的面板数据,采用双向固定效应模型、面板门槛模型和空间杜宾模型检验数字经济对高等教育高质量发展的影响。研究发现:数字经济对高等教育高质量发展具有正向促进作用,具体看对高等教育要素、能力和功能等三个维度的影响依次减弱;数字经济对东部地区高等教育高质量发展有积极影响,对中西部地区无显著影响;数字经济发展水平对高等教育高质量发展具有边际效应递增的非线性影响;数字经济对本地高等教育高质量发展有正向影响,但对邻近地区存在负向空间溢出效应。为此,应强化数字化战略布局,促进高等教育与数字经济产业深度合作;通过打造合作示范区、制定地区发展规划、加大数字基础设施建设投资、开发数字教育资源共享平台等方式发挥东部地区优势,增强数字经济发达地区的辐射带动作用。

关键词：高等教育数字经济高质量发展门槛模型空间计量模型

Geodesics in the Engel Group with a Sub-Lorentzian Metric——the Space-Like Case

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Chinese Annals of Mathematics,Series B 2020年第1期41卷 147-162页

作者： Qihui cai Department of Mathematics and Computer Science School of Biomedical Engineering and InformaticsNanjing Medical UniversityNanjing 211166China

Let E be the Engel group and D be a bracket generating left invariant distribution with a Lorentzian metric, which is a nondegenerate metric of index 1. In this paper, the author constructs a parametrization of a quasi-pendulum equation by Jacobi functions, and then gets the space-like Hamiltonian geodesics in the Engel group with a sub-Lorentzian metric.

关键词： Sub-Lorentzian metric Engel Group Geodesics

Cure of a New Type Composite on Noise Control and Effect of Filler Modification

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Journal of Materials Science & Technology 2003年第Z1期19卷 135-136页

作者： Jun cai Fei XU Weimin cai School of Municipal and Environment Englineering Harbin Institute of Technology Harbin150001china School of Environment Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China School of Environment Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

A new type composite of high efficiency sound attenuation was cured. The superfine tungsten powder, plasticizerand stabilizer are added into the PVC resin and blended in the mixing chamber of a HAAKE rheometer. The effect ofthe filler modification is considered in the composite cure. The properties of modified composite and unmodified oneare studied by SEM morphology viewing, acoustic and mechanical measurement. The test results indicate that thereason of the better soundproof and mechanical properties is the particle uniform dispersion and stronger adhesion.

关键词： Composite, Filler modification, Soundproof property, Mechanical property

数智时代出版伦理规范的价值冲突、融合与重塑

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湖北科技学院学报 2025年第1期45卷 66-72页

作者：蔡绍硕湖南师范大学新闻与传播学院湖南长沙410081

在社会伦理与出版伦理共同规制而形成的复杂关系网中,我国的出版伦理规范面临着出版业职业价值、商业价值、社会价值与出版物价值之间交错重叠的对立冲突。究其原因在于数智时代下,现有规范体系内容制定上结构不清晰,执行机制上不完备... 详细信息

在社会伦理与出版伦理共同规制而形成的复杂关系网中,我国的出版伦理规范面临着出版业职业价值、商业价值、社会价值与出版物价值之间交错重叠的对立冲突。究其原因在于数智时代下,现有规范体系内容制定上结构不清晰,执行机制上不完备以及在价值评判标准上无法实现多维冲突的价值融合。因此增强规范体系的规制效用,需要重塑出版机构、监管组织与读者公众话语间的一种新型共生关系:监管组织引导出版业制定结构清晰、实用性强的行业自律规范;出版机构健全职业自律机制,针对具体的失范问题制定便于价值评判的细则规定;读者公众积极参与,促进社会团体对出版行业的监督。

关键词：出版伦理规范体系价值冲突价值融合

Shor's algorithm does not factor large integers in the presence of noise

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Science China(Information Sciences) 2024年第7期67卷 305-320页

作者： Jin-Yi cai College of Letters and Science University of Wisconsin

We consider Shor's quantum factoring algorithm in the setting of noisy quantum gates. Under a generic model of random noise for(controlled) rotation gates, we prove that the algorithm does not factor integers of the form pq when the noise exceeds a vanishingly small level in terms of n—the number of bits of the integer to be factored, where p and q are from a well-defined set of primes of positive density. We further prove that with probability 1-o(1) over random prime pairs(p, q), Shor's factoring algorithm does not factor numbers of the form pq, with the same level of random noise present.

关键词： random noise Shor's algorithm rotation gates quantum computing prime factorization

Lattice Boltzmann simulation of flows in bifurcate channel at rotating inflow boundary conditions and resulted different outflow fluxes

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Acta Mechanica Sinica 2011年第4期27卷 510-518页

作者： Qing-Dong cai Department of Mechanics and Aerospace Engineering College of Engineering Peking University 100871 Beijing

The Lattice Boltzmann method （LBM） is used to simulate the flow field in a bifurcate channel which is a simplified model of the draft tube of hydraulic turbine machine. According to the simulation results, some qualitative conclusions can be deduced. The reason of uneven flux in different branches of draft tube is given. Not only the vortex rope itself, but also the attenuation of the rotation strength is important in bringing on the uneven flux. The later leads to adverse pressure gradient, and changes the velocity profile. If the outlet contains more than one exit, the one that contains the vortex rope will lose flux because of this adverse pressure gradient. Several possible methods can be used to minimize the adverse pressure gradient domain in order to improve the efficiency of turbine machine.

关键词： Lattice Boltzmann method - Hydraulic turbinemachine Draft tube Vortex rope

Rock support in strainburst-prone ground

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International Journal of Mining Science and Technology 2019年第4期29卷 529-534页

作者： M.cai MIRARCO Laurentian University Bharti School of Engineering Laurentian University Key Laboratory of Ministry of Education for Safe Mining of Deep Metal Mines Northeastern University

Strainburst is the most frequently encountered type of rockburst in underground *** occurs when the stress near the excavation boundary reaches the peak strength of the rock mass causing it to fail suddenly and *** mitigate strainburst damage risk,effective rock support is *** strainburst-prone grounds,it is critical to have rock support components to fulfill the role of rock reinforcement first to prevent rock *** the other hand,well-retained and reinforced rock masses may be excessively deformed and fail *** such a case,yielding elements are needed in the rock support system to absorb the excess strain energy released due to rock *** conventional method to support strainburst-prone grounds is to install rock reinforcement system using rebar and mesh first and then install yielding support system using dynamic rockbolts at a later *** two-stage rock support installation process is not effective because it can adversely impact mine production *** paper presents a new,patented dynamic rockbolt,which is called superbolt and is developed for rock support in burst-prone *** testing confirmed that the superbolt has superb capacity to achieve the goal of reinforcing and holding rock *** superbolt is characterized by high dynamic energy absorption capacity,consistent performance,and the ability to withstand repeated dynamic *** new rockbolt can be used in a one-pass rock support system to facilitate rapid drift development in underground mines and increase mine safety and productivity.

关键词： Rockburst Strainburst Rock support Dynamic failure Energy Capacity

基于“六项机制”链条理念的安全生产风险管控探索

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水利技术监督 2025年第1期 15-17页

作者：蔡存宏广东粤海粤东供水有限公司广东揭阳522000

为强化各参建单位对六项机制的理解,解决项目法人与参建单位管控风险问题,结合粤东二期工程特点及现状,认真研究六项机制相关内容,探索安全风险签点放行模式,以链条理念串联风险查找、研判、预警、防范、处置、责任要素,落实管控措施,... 详细信息

为强化各参建单位对六项机制的理解,解决项目法人与参建单位管控风险问题,结合粤东二期工程特点及现状,认真研究六项机制相关内容,探索安全风险签点放行模式,以链条理念串联风险查找、研判、预警、防范、处置、责任要素,落实管控措施,压实责任,严格考核问责,实现闭环。这有助于水利工程安全风险的进一步可控,预防事故,提高安全生产管理成效。

关键词：六项机制链条理念安全生产风险管控

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基于不平衡数据的网络流量异常检测方法研究

电子设计工程 2025年第1期33卷 46-50页

作者：蔡登江中国海洋石油集团有限公司信息技术中心北京100010

为有效解决不平衡数据影响的问题,确保面对大规模网络流量数据异常检测的实时性,提出了基于不平衡数据的网络流量异常检测方法。通过优化SMOTE(合成少数类过采样)算法对含不平衡数据的网络流量数据进行平衡处理,将得到的数据集通过核主... 详细信息

为有效解决不平衡数据影响的问题,确保面对大规模网络流量数据异常检测的实时性,提出了基于不平衡数据的网络流量异常检测方法。通过优化SMOTE(合成少数类过采样)算法对含不平衡数据的网络流量数据进行平衡处理,将得到的数据集通过核主成分分析方法实现特征提取后,输入到卷积神经网络中。通过卷积和池化过程进一步实现网络流量数据深度特征提取,依据Softmax分类层对网络流量特征进行分类,利用训练好的卷积神经网络预测模型实现不平衡数据的网络流量异常检测。通过实验验证,该方法展现出了良好的效率和稳定性。在迭代次数为40次时,实现最佳不平衡数据处理结果,能够对异常数据进行精准识别。

关键词：不平衡数据网络流量异常检测优化SMOTE算法核主成分分析卷积神经网络 Softmax分类