浅谈我国古代文艺作品中的影射技法

影射 ,作为一种文学技巧 ,最先出现在《诗经》 ,日后由于意识形态变化的原因 ,并在儒家文学观的指引下 ,逐渐推广到辞赋、散文、小说、词曲和戏剧所有文学领域 ,表现形式也由单一的比喻象征发展到多种类型 ,形成姿态横生、形式大备、羽翼丰满的艺术手段     

论艺术设计专业表现技法的两种形式

艺术设计专业中的表现技法有多种。此文论述了素描点绘形式和色彩喷绘形式的表现技法。如果学生在实践中掌握了这门主要专业课程,就会为今后的电脑图形设计打下坚实的基础。     

李白与杜甫面面观

围绕李白与杜甫的生平行事及其诗歌创作,从八个层面进行对比论述,所谓“以诗证史,有裨于知人论世”。文中既综合了当代的研究成果,也提出了一些新的见解。     

治理黄土高原必须抓住关键突破口

黄土高原是我国独特的地理区域,其水土流失严重,生态环境恶化,经济落后,问题很多,如何治理黄土高原一直是个难题。若能抓住关键突破口,如种树种草改善生态环境,防止水土流失,建设基本农田,解决粮食问题,开展多种经营,增加经济收入等,进行综合治理和开发,问题便将迎刃而解。     

《金融会计》教学必须走出的几个误区

《金融会计》课程的教学与近几年来金融业迅猛发展的趋势不相适应 ,在认识上、教学内容上和教学手段等方面存在种种误区     

《金属材料与热处理》教法探究

对如何在《金属材料与热处理》课堂教学中培养提高学生的学习能力,从动力、基础及主要环节与关键问题等方面作了粗浅的研究与探讨。     

Defining the linear portion of a sigmoid‐shaped curve: bend points

Formulae are provided that define the ‘bend points’, the beginning and end of the essentially linear dose–response region, for the four‐parameter logistic model. The formulae are expressed in both response and dose units. The derivation of the formulae is shown in order to illustrate the general nature of the methodology. Examples are given that describe how the formulae may be used while planning and conducting bioassays. Copyright © 2003 John Wiley & Sons, Ltd.     

An algorithm for computing principal points with respect to a loss function in the unidimensional case

In Flury (1990) the k principal points of a random vector X are defned as the points p(1),..., p(k) minimizing EX–p(i)²; i=1,..., k. We extend this concept to that of k principal points with respect to a loss function L, and present an algorithm for their computation in the univariate case.     

新型农业经营主体的经营绩效与差异分析——基于农村固定观察点的数据调查

新型农业经营主体的经营绩效关系到其可持续发展。采用农村固定观察点对我国各省区新型农业经营主体的调查数据,运用随机前沿分析法,对不同类型的经营主体的经营绩效进行分析,并进一步分析新型农业经营主体的差异性。结果表明：相比小农户而言,新型农业经营主体的经营绩效相对较高,但是其平均绩效还有很大的改善空间;新型农业经营主体面临融资难和人才缺乏的问题,且该问题在农民专业合作社中最为突出;我国家庭农场的经营绩效在三种新型农业经营主体中是最高的,其次是农业（龙头）企业,最后是农民专业合作社。对此,提出应完善土地“三权分置”机制,实现新型农业经营主体的规模化生产,进一步解决其融资难和人才缺乏的问题,加大政策扶持力度等建议。     

A high breakdown,high efficiency and bounded influence modified GM estimator based on support vector regression

Regression analysis aims to estimate the approximate relationship between the response variable and the explanatory variables. This can be done using classical methods such as ordinary least squares. Unfortunately, these methods are very sensitive to anomalous points, often called outliers, in the data set. The main contribution of this article is to propose a new version of the Generalized M-estimator that provides good resistance against vertical outliers and bad leverage points. The advantage of this method over the existing methods is that it does not minimize the weight of the good leverage points, and this increases the efficiency of this estimator. To achieve this goal, the fixed parameters support vector regression technique is used to identify and minimize the weight of outliers and bad leverage points. The effectiveness of the proposed estimator is investigated using real and simulated data sets.