检索结果-南通市图书馆

“OBE+混合一流”教学模式研究与实践——以国家级混合式一流课程“Web服务与RESTful技术”为例

在线全文

学校读者我要写书评

暂无评论

职业技术 2025年第1期24卷 80-88页

作者：聂鹏江西财经大学软件与物联网工程学院南昌330013

“双一流”建设背景下,为了提升软件工程专业课的课程品质,依托国家级混合式一流课程“Web服务与RESTful技术”,提出一种适用于软件工程专业的“OBE+混合一流”教学模式。在分析专业课程特征及“OBE+混合一流”教学理念基础上,从OBE混... 详细信息

“双一流”建设背景下,为了提升软件工程专业课的课程品质,依托国家级混合式一流课程“Web服务与RESTful技术”,提出一种适用于软件工程专业的“OBE+混合一流”教学模式。在分析专业课程特征及“OBE+混合一流”教学理念基础上,从OBE混合课程内容重构、OBE混合课程教学过程设计、学习成果认定与质量提升等方面,对该模式的设计与应用展开论述。实践证明,该模式能够有效覆盖课程成果目标,提升学生基于Web服务解决综合问题的工程能力,“OBE+混合一流”教学模式在软件工程专业教学中具备良好的适应性,教学产出效果符合预期。

关键词： OBE 混合式教学一流课程软件工程 Web服务

基于FLAC^(3D)数值模拟的回风平巷变形破坏机理分析

在线全文

学校读者我要写书评

暂无评论

煤矿现代化 2025年第1期34卷 1-6页

作者：杨鹏山西华晋集团吉宁煤业有限责任公司山西临汾042108

随着开采的逐步深入,山西华晋吉宁煤业逐步面临着高应力环境下回采巷道掘进难以及支护难等问题。以该矿2208回风平巷为研究对象,借助FLAC^(3D)通过数值模拟的方式用控制变量法分别从地质条件、支护方式、施工工艺这3个方面分析对巷道围... 详细信息

随着开采的逐步深入,山西华晋吉宁煤业逐步面临着高应力环境下回采巷道掘进难以及支护难等问题。以该矿2208回风平巷为研究对象,借助FLAC^(3D)通过数值模拟的方式用控制变量法分别从地质条件、支护方式、施工工艺这3个方面分析对巷道围岩变形量(顶板下沉量、底板鼓起量,侧帮变形量)、破坏区深度、破坏体积的影响。研究发现断层地质构造对回采巷道及周围煤岩体稳定性影响显著,应当在回采巷道揭露断层地质构造时加强对回采巷道的支护工作。锚杆支护能够有效改善巷道围岩变形以及应当采用及时支护方式对回采巷道进行加固,并尽量减少顶板暴露面积,从而最大限度地维护巷道围岩稳定。

关键词：支护控制变量法巷道稳定性高应力环境

STABILITY AND CONVERGENCE ANALYSIS OF SECOND-ORDER SCHEMES FOR A DIFFUSE INTERFACE MODEL WITH peng-ROBINSON EQUATION OF STATE

在线全文

学校读者我要写书评

暂无评论

Journal of Computational Mathematics 2017年第6期35卷 737-765页

作者： Qiujin peng Zhonghua Qiao Shuyu Sun Institute for Mathematical Sciences Renmin University of China Beijing 100872 China Department of Applied Mathematics The Hong Kong Polytechnic University Hung Horn Hong Kong Division of Physical Sciences and Engineering King Abdullah University of Science and Technology Thuwal 23955-6900 Kingdom of Saudi Arabia

In this paper, we present two second-order numerical schemes to solve the fourth order parabolic equation derived from a diffuse interface model with peng-Robinson Equation of state （EOS） for pure substance. The mass conservation, energy decay property, unique solvability and L~ convergence of these two schemes are proved. Numerical results demon- strate the good approximation of the fourth order equation and confirm reliability of these two schemes.

关键词： Diffuse interface model Fourth order parabolic equation Energy stability,Convergence.

Exploring the spatiotemporal heterogeneity of vegetation changes in subtropical humid karst region under CO2 fertilization

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geographical Sciences 2025年第1期 65-87页

作者： CHEN Meng ZHOU Qiuwen peng Dawei YAN Weihong School of Geography and Environmental Science Guizhou Normal University Huanjiang Observation and Research Station for Karst Ecosystem Guangxi Key Laboratory of Karst Ecological Processes and Services Institute of Subtropical Agriculture CAS University of Chinese Academy of Sciences Faculty of Geographical Science Beijing Normal University Forestry Bureau of Shibing County

Terrestrial ecosystems heavily depend on vegetation,which responds to carbon dioxide （CO2） fertilization in hot and humid *** subtropical humid karst region is a hot and humid region;whether and to what extent CO2fertilization affects vegetation changes in such regions remains *** this study,we investigated the degree to which CO2fertilization influences vegetation changes,along with their spatial and temporal differences,in the subtropical humid karst region using time-lag effect analysis,a random forest model,and multiple regression *** showed that CO2fertilization plays an important role in vegetation changes,exhibiting clear spatial variations across different geomorphological zones,with its degree of influence ranging mainly between 11%and 25%.The highest contribution of CO2fertilization was observed in the karst basin and non-karstic region,whereas the lowest contribution was found in the karst plateau *** studies have primarily attributed vegetation changes in subtropical humid karst region to ecological engineering,leading to an overestimation of its contribution to these *** findings of this study enhance the understanding of the mechanism of vegetation changes in humid karst region and provide theoretical and practical insights for ecological and environmental protection in these regions.

关键词：

Precambrian mafic dyke swarms in the North China Craton and their geological implications

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Earth Sciences 2015年第5期58卷 649-675页

作者： peng peng State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences

A map of major Precambrian mafic dyke swarms and related units in the North China Craton is compiled, and the features and geological implications of these swarms are demonstrated. The Archean dyke swarms are available to portray the early crustal growth and cratonization. The middle Paleoproterozoic(2200–1850 Ma) swarms and related magmatic series could constrain the tectonic evolution: They approve that the craton was amalgamated by two sub-cratons. The late Paleoproterozoic(1800–1600 Ma), Mesoproterozoic(1400–1200 Ma) and Neoproterozoic(1000–800 Ma) series swarms are important in paleogeographic reconstruction: they indicate that North China might have connected with some of the North European and North American cratons during Proterozoic. Dyke swarms are not only geological timescales and tectonic markers but also evolution indicators of lithospheric mantle: they imply a rejuvenation of the sub-continental lithospheric mantle of North China at 1780–1730 Ma. These swarms occurred with several rifts, including the Hengling(2200–1970 Ma), Xuwujia(1970–1880 Ma), Xiong'er(1800–1600 Ma), Yan-Liao(1730–1200 Ma), and Xu-Huai(1000–800 Ma). Among them, the Xuwujia rift was possibly continental arc associated; whereas the others were intra-continental. In addition, the Xiong'er and Xu-Huai rifts were possibly triple junctions along the present southern and southeastern margins of the Craton, respectively. Different tectonic settings of these rifts and dyke swarms would result in diversified series of ore deposits.

关键词： North China Craton Precambrian mafic dyke swarm rift system supercontinent paleogeographic reconstruction

A six-variable quasi-3D isogeometric approach for free vibration of functionally graded graphene origami-enabled auxetic metamaterial plates submerged in a fluid medium

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2025年第1期 157-176页

作者： Wei CHEN Zhihong TANG Yufen LIAO Linxin peng College of Civil Engineering University of South China College of Civil Engineering and Architecture Guangxi University Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education Guangxi University

This paper presents, for the first time, an effective numerical approach based on the isogeometric analysis(IGA) and the six-variable quasi-three dimensional(3D)higher-order shear deformation theory(HSDT) to study the free vibration characteristics of functionally-graded(FG) graphene origami(GOri)-enabled auxetic metamaterial(GOEAM) plates submerged in a fluid medium. The plate theory incorporates the thickness stretching and the effects of transverse shear deformation without using any shear correction factors. The velocity potential function and Bernoulli's equation are used to derive the hydrodynamic pressure acting on the plate surface. Both horizontally and vertically immersed plate configurations are considered here in the form of inertia *** plates are composed of multilayer GOEAMs, with the GOri content varying through the plate's thickness in a layer-wise manner. This design results in graded auxetic *** material properties are evaluated by mixing rules and a genetic programming(GP)-assisted micromechanical model. The governing equations of motion for the FG-GOEAM plates immersed in a fluid medium are derived by Hamilton's principle. After validating the convergence and accuracy of the present model, a comprehensive parametric study is carried out to examine the effects of the GOri content, GOri distribution pattern, GOri folding degree, fluid level, immersed depth, and geometric parameter on the natural frequencies of the FG-GOEAM plates. The results show that the natural frequencies for the four GOri distribution patterns increase with the increase in the layer number when the lay number is fewer than 10, and then stabilize after the layer number reaches ***, in general, the natural frequency of the FG-GOEAM plate in a vacuum or fluid increases when the GOri content increases, while decreases when the GOri folding degree increases. Some additional findings related to the numerical results are presented in the conclusions. It is belie

关键词：

Minister　peng　Reports　on　the　Population　Status　and　Family　Planning　Programme　in　1993

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

China Population Today 1994年第2期11卷 3-7,1页

作者： P peng

The following is the synopsis of the two reports made by *** Peiyun,State Councillor and Minister of the State Family Planning Commission(SFPC),at the Na-tional Family Planning Confcrence convened by SFPC from March 19 to 21,1994 and the National Forum on Family Planning Work jointly sponsored by the Central Committee of the Communist Party of China and the State Couocil on March 22.---editor.

关键词： Minister Population Family Planning peng Programme Reports Status and in

在线全文

学校读者我要写书评

暂无评论

智能传感技术在水肥一体系统中的应用研究

农机化研究 2025年第2期47卷 176-180页

作者：祝鹏郭艳光内蒙古农业大学职业技术学院内蒙古包头014109

以进一步提升水肥一体机系统的作业效率为目标,选取智能传感的监测技术,针对整机的监测控制与信号处理展开应用设计研究。考虑水肥一体机过程作业肥液融合的均匀性及系统各模块之间的协同性功能实现,结合微分补偿的传感数据算法处理方法... 详细信息

以进一步提升水肥一体机系统的作业效率为目标,选取智能传感的监测技术,针对整机的监测控制与信号处理展开应用设计研究。考虑水肥一体机过程作业肥液融合的均匀性及系统各模块之间的协同性功能实现,结合微分补偿的传感数据算法处理方法,进行智能传感的水肥一体机架构布局,并匹配可执行的软件控制程序及硬件实施结构,进行实地传感应用监测与灌施控制作业试验。结果表明:水肥一体机系统的数据监测准确率可达95.25%,系统故障率相对降低3.79%,监测数据准确及时,能够确保系统各环节指令得到有效的调整与反馈,进而保证灌施土壤的含水稳定率相对提升7.87%,对于作物的稳定生长与产量提升有重要的参考价值。

关键词：水肥一体机智能传感信号处理微分补偿数据监测准确率

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

山洪沟河流堤防破坏机理及修复策略探讨

水利规划与设计 2025年第1期 142-146页

作者：程鹏中国电建集团昆明勘测设计研究院有限公司云南昆明650051

山洪沟防洪治理堤防水损破坏的现象较为普遍。为制定可靠有效的修复策略,同时为给提升治理水平提供参考,文章以南景河近年修建的重力式浆砌石挡墙堤防为例,采用对水损情况进行调查统计后分析归纳的方法,得出结论:河床冲刷后基础失稳是... 详细信息

山洪沟防洪治理堤防水损破坏的现象较为普遍。为制定可靠有效的修复策略,同时为给提升治理水平提供参考,文章以南景河近年修建的重力式浆砌石挡墙堤防为例,采用对水损情况进行调查统计后分析归纳的方法,得出结论:河床冲刷后基础失稳是堤防挡墙破坏的主要原因。建议山洪沟防洪治理措施应精细化,稳定河床、合理确定基础埋置深度双措并举。以此增强堤防稳固程度,提高抗破坏的能力,从而为广大山区居民提供更好的防洪保障。

关键词：山洪沟治理堤防破坏机理基础失稳修复