检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

河道堤岸线的分形特性

水电能源科学 2010年第9期28卷 93-94页

作者：徐晶宋东辉广东水利电力职业技术学院广东广州510635

针对应用分形理论可较好解决描述河道堤岸线复杂地形难的问题,提出了河道生态形态的分析和修复方法。实例应用结果表明,此法行之有效,可推广应用。

关键词：河道堤岸应用结果修复方法推广应用河道生态复杂地形分形理论形态问题描述分析

在线全文

学校读者我要写书评

暂无评论

考虑桩—土非线性作用的垂直荷载桩静力分析

水电能源科学 2009年第3期27卷 127-129,140页

作者：徐晶宋东辉广东水利电力职业技术学院广东广州510635

采用桩侧土应力与剪应变的双曲线关系、桩端阻力与变形的双曲线关系建立了桩—土非线性共同作用的分析模型,利用弹性理论建立了半无限弹性平面体地基上垂直荷载桩的弹性力学模型,并结合桩—土非线性共同作用分析推导了垂直荷载桩静力分... 详细信息

采用桩侧土应力与剪应变的双曲线关系、桩端阻力与变形的双曲线关系建立了桩—土非线性共同作用的分析模型,利用弹性理论建立了半无限弹性平面体地基上垂直荷载桩的弹性力学模型,并结合桩—土非线性共同作用分析推导了垂直荷载桩静力分析的基本方程,给出了垂直荷载桩静力分析的理论求解方法。实例结果表明,该方法合理,便于工程计算。

关键词：垂直荷载桩力学分析桩—土非线性共同作用半无限弹性平面体基本方程

A NEW ACCURATE NUMERICAL MODEL FOR DAM-BREAK PROBLEMS

在线全文

学校读者我要写书评

暂无评论

A NEW ACCURATE NUMERICAL MODEL FOR DAM-BREAK PROBLEMS

第九次河流泥沙国际学术大会

作者： Jiaquan DENG and Xiaoming WUScientific Research Institute of Pearl River Water Resources Commission Ministry of Water Resources guangzhou 510611 china. Yue ZENG guangdong technical college of Water Resources and Electric Engineering guangzhou 510635 chinaWeimin WUWuhan University Wuhan 430072 china

＜正＞The dam-break problem is not a continuous flood wave problem. Traditional numerical models for open channel flows are all based on St. Venant equations while the basic assumption in St. Venant equations is that the water flow is continuous. Therefore, the traditional numerical open channel models cannot reasonably simulate dam-break problems. In this paper, a new numerical model is proposed based on integration of BGK Boltzmann equation which governs the molecule motion. There is no continuity assumption in the model. It is shown that the proposed numerical model can accurately and stably simulate dam-break problems.

关键词： Dam-break BGK Boltzmann equation BGK numerical model Open channel flow

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

基于项目化的局域网组建课程教材的建设探讨

佳木斯教育学院学报 2011年第8期 92-92,100页

作者：关巍广东水利电力职业技术学院广东广州510635

项目化教学是当前高职院校课程改革的重要方向之一,然而传统的教材无法满足项目化教学的需求。对此,文章以局域网组建课程教材建设为例,对项目化教材建设的目标、思路、实施进行探讨。

关键词：项目化教学项目化教材局域网组建课程改革教材建设

在线全文

学校读者我要写书评

暂无评论

我国绿色经济发展对策探讨

生态经济(学术版) 2010年第2期 123-125页

作者：余兰广东水利电力职业技术学院

绿色经济是以福利最大化为目标的新经济模式。在论述发展绿色经济必要性的基础上,文章提出绿色经济发展一靠政府的支持和引导,二靠绿色产业的发展,三靠技术创新。

关键词：绿色经济绿色产业技术创新

Sensitivity Analysis of Floor Response Spectra of Reactor Building

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Sensitivity Analysis of Floor Response Spectra of Reactor Bu...

Generation of high-energy dual-wavelength domain wall pulse with low repetition rate in an HNLF-based fiber ring laser

第13届太平洋地区核能大会

作者： Zhongcheng Li technical Center of CGNPC Shenzhen 518124 guangdong china

＜正＞This paper describes the influence on the calculation of Floor Response Spectra（FRS）, caused by the dispersion and uncertainty of the major dynamic geo-technicaldesign parameter-dynamic shear modulus. The analysis is performed by consideringthe Soil-Structure Interaction （SSI） effects and based on the model of the reactorbuilding in a typical 1000 MWe class Pressurized Water Reactor （PWR） nuclear powerstation. The sensitivity of the floor acceleration response spectra of reactor building isdiscussed, on the basis of the results of numerical analysis. The analysis method and therelevant conclusion presented in this article could be used for reference in assessing theadaptability of the analysis method and results in the calculation of floor responsespectra for a Nuclear Power Plant （NPP）.

关键词： Reactor building Floor response spectra Dynamic geotechnical design parameters Sensitivity analysis

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Chinese Physics B 2014年第6期23卷 217-220页

作者：罗智超林振彬李金玉朱鹏飞宁秋奕邢晓波罗爱平徐文成 Laboratory of Nanophotonic Functional Materials and Devices School of Information and Optoelectronic Science and Engineering South China Normal University Department of Environmental Engineering Guangdong Industry Technical College MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science College of BiophotonicsSouth China Normal University

The generation of high-energy dual-wavelength domain wall pulse with a low repetition rate is demonstrated in a highly nonlinear fiber （HNLF）-based fiber ring laser. By introducing the intracavity birefringence-induced spectral filtering effect, the dual-wavelength lasing operation can be achieved. In order to enhance the cross coupling effect between the two lasing beams for domain wall pulse formation, a 215-m HNLF is incorporated into the laser cavity. Experimentally, it is found that the dual-wavelength domain wall pulse with a repetition rate of 77.67 kHz could be efficiently obtained through simply rotating the polarization controller （PC）. At a maximum pump power of 322 mW, the 655-nJ single pulse energy in cavity is obtained. The proposed configuration provides a simpler and more efficient way to generate high energy pulse with a low repetition rate.

关键词： fiber lasers high-energy pulse domain wall low repetition rate