Classification of longan fruit bruising using visible spectroscopy

This research showed the potential of using visible spectroscopy for classification of non-bruised and bruised longan fruits. The visible spectra of bruised and non-bruised longan fruits were acquired from 400 to 700 nm with 10 nm resolution by the spectrophotometer. The principal component analysis (PCA), Partial Least Square Discriminant Analysis (PLS-DA) and Soft Independent Modeling of Class Analogy (SIMCA) were used to develop classification models. The Partial Least Square Discriminant Analogy (PLS-DA) showed better classification accuracy than SIMCA with 100% correctness. The result was found to be helpful for the application in the industry for on-line and portable application.     

液力减振器油液物性与工况参数的离散性耦合研究

根据弹流润滑理论，油的特性是压力和温度的函数，本文用分域离散法对汽车液力减振器内部油液物性和工况参数进行耦合处理，从而实现减振器阻力特性的理想模拟，并详细分析了压力和温度与减振器关键部位节流孔物性和结构参数的影响关系。     

物理化学教学中之授课技巧

本文介绍了作者经过多年物理化学教学实践探索出的一些比较成熟的针对物理化学课程特点的授课技巧,包括引子、比喻等多种手段,目的是将理论性很强的知识点尽量讲解得通俗易懂,使较为枯燥的物理化学知识变得比较生动有趣.     

���֧����ģ��ʵ���о�

由于分支井之间干扰的存在，故相互间的夹角是影响多分支井产能的主要因素。文章以水电相似原理为基础，针对对称式多分支井、任意夹角的双分支井和鱼骨状井进行了一系列电模拟实验，利用相似系数将实验结果转换为相对应的多分支井的实际产能；评价了对称分支井的产能公式，重点研究了分支角度对分支井产能的影响，发现在分支长度都相等的情况下对称分支井在分支数超过4个（分支角度小于45°）后，产量增加幅度明显变缓；对于双分支井和四分支的鱼骨状井而言，也存在同样的规律。实验结果对优化分支井的结构和建立分支井的半解析产能模型提供了依据。     

Proof by analogy in mural

An important advantage of using a formal method of developing software is that one can prove that development steps are correct with respect to their specification. Conducting proofs by hand, however, can be time consuming to the extent that designers have to judge whether a proof of a particular obligation is worth conducting. Even if hand proofs are worth conducting, how do we know that they are correct? One approach to overcoming this problem is to use an automatic theorem proving system to develop and check our proofs. However, in order to enable present day theorem provers to check proofs, one has to conduct them in much more detail than hand proofs. Carrying out more detailed proofs is of course more time consuming. This paper describes the use of proof by analogy in an attempt to reduce the time spent on proofs. We develop and implement a proof follower based on analogy and present an example to illustrate its characteristics. The example shows that even when the follower fails to complete a proof, it can provide a hint that enables the user to complete a proof.     

《工程力学》教学方法探讨

《工程力学》教学既要注重传授知识，又要注意启发思维，培养能力，结合教学实践，介绍了工程力学的几种教学方法，以期达到提高教学质量，改善教学效果的目的。     

风险分析方法与三峡工程投资风险分析

三峡工程具有巨大综合利用效益。工程建设的特点是投资总量大，建设周期长，工程系统复杂，不确定性因素多，影响大。投资风险成为投资者非常关注的问题。运用图示评审技术与含相关因素处理的蒙特卡洛随机模拟相结合的计算模型，可以对这种风险的大小进行量化分析。ＧＥＲＴ随机网络直接参考施工网络图绘制，使投资分解、风险因素辨识，量化等更具直观性，使分析过程更接近于实际。该投资风险分析模型，对水利水电工程系统具有通用性     

新型高可靠性甲烷传感器设计

介绍一种采用低功耗AT89LV51单片机构成的高精度、低功耗、高可靠性、智能型新型煤矿井下甲烷传感器。甲烷传感器采用数字芯片，显著提高了甲烷检测精度，减小了仪表体积，同时采用了XICOR公司的SPI接口的看门狗和X5045芯片，使系统更加稳定可靠。与PC机通信可建立井下环境数据库，便于井下工人随身携带，而且预防了安全事故的发生。     

基于熵权法的新机场货邮吞吐量类比分析预测

针对新建机场缺少历史数据这一事实,利用熵权法确定各经济指标权重.综合各指标权重计算类比机场所在城市综合评价指数,给出类比预测方法,根据类比城市综合评价指数计算新建机场吞吐量及未来增长率.以九寨沟黄龙机场为例,对类比预测法进行了实证分析研究.     

AI models of verbal/conceptual analogy

This article surveys some psychological research on analogy and the theoretical notions that it spawned, which in turn have served as some of the foundationalnotions in AI models. A number of AI models of analogy are described. It is argued that future efforts could be based on the integration of the key insights of the models. This includes the incorporation of contextual information, the construction of dynamic semantic bases, the incorporation of multiple approaches to the problem of inference generation and constraint, and the construction of systems that can be used as test beds or tool kits for the analysis of representational and inference schemes. Along with the prospects, there are also pointers to the lingering issues.