罗香林先生对谱牒研究的贡献

罗香林以谱牒研究闻名 ,他对谱牒学的贡献主要有三 :一是运用谱牒解决了诸如洪秀全的出身等一系列重大学术问题 ;二是运用谱牒资料撰写了《客家研究导论》和《客家源流考》等具有开创性的著作 ;三是架构了中国谱牒学的理论体系。他在我国 2 0世纪谱牒研究中的作用和地位是不可磨灭

Sealing Failure Analysis of Hydraulic Cylinder's Rod and Preventive Measures

针对液压传动密封失效的现象,分析了液压系统中活塞杆密封失效的形式、特点,并提出解决此种密封失效的方法。Aiming at the failure of hydraulic sealing,This paper analysis the features of the piston-rod seal failure in hydraulic system, It also put some methods to solve such a seal failure

语义韵研究:对象、方法及应用

语义韵是当代语料库语言学中的一个重要研究对象。它指的是单词或词组的“超越词界的联想色彩”。要确认语义韵必须在以现代信息技术为支持的语料库语言学研究中 ,使用定位检索软件找出其搭配伙伴 ,对其“表达联想意义”进行定性、定量分析 ,从而得出语义韵轮廓。当代英美词典编纂正越来越多地吸收和运用语义韵研究的成果 ,这对我国英汉和汉英词典编纂者解决此类问题具有重要的借鉴意

跨文化语境演讲中谚语引用之批评分析

本文以语料库检索结果为依据,对250篇英美领导人在跨文化语境中的英文演讲里的谚语引用进行批评分析,重点探讨三方面的问题:(1)英美领导人在跨文化语境中引用谚语的策略和动机;(2)演讲者对此互文手段的偏好;(3)谚语引用与上下文之间的互文关系及功能。【英文摘要】This paper is an attempt to study proverbs and sayings embedded in remarks by US/UK leaders in intercultural contexts based on analyses of data from our corpora containing 250 speeches.Its focus is on the strategy and motivation of quoting proverbs or sayings in different intercultural contexts,the partiality for quoting proverbs or sayings among US/UK leaders,and the function of such intertextuality between such quotations and their co-texts.福建省社科规划项目的研究成果(项目编号:2006B2125); 厦门大学2007年文科创新团队资助项目的研究成

国际保理业务的运作及其风险规避

国际保理在国际范围内已经是一项比较成熟的业务,但目前我国的保理业务仍处于探索阶段,加快国际保理业务的发展是我国商业银行面对国际金融新形势的必然选择,也顺应了当今国际贸易发展的要求。本文通过对国际保理业务中单保理和双保理运行模式的介绍,探讨保理业务中存在的风险,并对如何规避保理业务风险进行深入分析,以期对国际保理业务的发展有所裨益

Neural network model based on hybrid algorithms and its application in runoff for ecasting

为了提高径流预报的精度,采用一种基于粒子群和遗传的混合方法同时优化人工神经网络结构、连接权和偏置,在进化过程中采用训练样本和验证样本共享适应度技术,并以此建立径流预报模型。通过对柳州径流实例分析,并与离子群优化的人工神经网络模型、遗传进化的人工神经网络模型和时间序列模型方法对比,研究结果表明,该方法学习能力强、泛化性能高和有效提高系统预测的准确率,为获得更高预测精度的径流预报提供了一种有效的建模方法。In order to improve the accuracy of runoff forecasting,a hybrid algorithm combining PSO and GA algorithm with optimizing artificial neural network structure,connection weights and bias was proposed and used to establish a runoff forecasting model.This hybrid algorithm adopts training samples and validation samples to share fitness in the evolutionary process.The algorithm was compared with two forecasting models including PSO-ANN and GA-ANN through the actual examples of Liuzhou runoff forecasting.The results show that the new approach has strong learning ability and high generalization performance and can improve the accuracy of forecasting system effectively.Thus,it is an effective modeling method to get high precision of runoff forecasting.国家自然科学基金资助项目(61202143;51065002;11161029

Determination of Number of Motion Axes in NC Grinding of Rotary Cutter

【中文文摘】根据回转面刀槽螺旋面的成形原理 ,阐释了回转面刀具数控磨削成形的过程实质上就是控制每一瞬时砂轮几何体与工件几何体在空间的相对位姿和相对运动趋势的过程 ;分析了砂轮平动型和砂轮摆动型CNC工具磨床的运动形式 ,讨论了机床联动轴数的确定原则并给出了计算实例 【英文文摘】According to the forming principle of rotary helical flute surface, it is explained that the shaping process of rotary cutters by NC grinding is virtually the process to control the relative position and attitude and the relative motion direction in the space between the grinding wheel body and workpiece body at the every moment. The motion modalities of CNC tool grinders with moving grinding wheel and swing grinding wheel were analyzed. The principle of determining the number of motion axes was discussed, and a calculating example was presented

醇溶型无机锌车间底漆的电化学行为研究

使用电化学方法对2种不同的醇溶型无机锌车间底漆进行了研究,结合浸泡以及盐雾的实验结果,发现2种车间底漆中锌含量对阴极保护时效有影响,但不是决定车间底漆防锈能力的唯一因素,锌含量与防锈颜料对于车间底漆的防锈性能有协同效果。其中,锌粉在早期提供阴极保护的作用,而防锈颜料在后期对基底提供防锈保护。对于锌粉含量相对较高的车间底漆,锌粉并不是从一开始就全部参加阴极保护作用,而是一部分具有激活潜力的锌粉在另一部分锌粉率先反应之后才由\"未激活状态\"转变为\"激活状态\"进而提供阴极保护的作用