浅析毛泽东学风理论的当代意义

学风问题是对待马克思主义的态度问题,实质上也是党的思想路线问题。学风关系到党的生死存亡,是“第一个重要的问题”。这是毛泽东学风理论的精髓所在,它对于新时期端正学风,创新理论,搞好党的作风建设有着重要的现实意义。     

A weighted polynomial regression method for local fitting of spatial data

Typically, parametric approaches to spatial problems require restrictive assumptions. On the other hand, in a wide variety of practical situations nonparametric bivariate smoothing techniques has been shown to be successfully employable for estimating small or large scale regularity factors, or even the signal content of spatial data taken as a whole.We propose a weighted local polynomial regression smoother suitable for fitting of spatial data. To account for spatial variability, we both insert a spatial contiguity index in the standard formulation, and construct a spatial-adaptive bandwidth selection rule. Our bandwidth selector depends on the Gearys local indicator of spatial association. As illustrative example, we provide a brief Monte Carlo study case on equally spaced data, the performances of our smoother and the standard polynomial regression procedure are compared.This note, though it is the result of a close collaboration, was specifically elaborated as follows: paragraphs 1 and 2 by T. Sclocco and the remainder by M. Di Marzio. The authors are grateful to the referees for constructive comments and suggestions.     

关注社会现实:20世纪中国民俗学研究的回顾与瞻望

民俗学是以研究民间风俗习惯为对象的一门人文科学。民俗学研究对社会现实关注的范围和程度决定其学科前途和命运。民俗学在外国历史考古中创立,在现实需要中成为“显学”,在关注社会现实中发展。我国具有丰厚的民俗资源,社会环境优越,学术前景广阔。     

汉代经学简议三题

两汉是我国古代经学全面确立时期,也是经学获得繁荣的第一个重要历史阶段。"经"是对于一部分儒家典籍的专指与特称,"经学"则是以诸经为对象的阐释、考辨、研究之学。"今文经学"与"古文经学"是始见于汉代经学史的两个不同派别或学术系统,两者的各自发展和交互论争贯穿于两汉,也影响到后世。两汉四百年经学的发展大体经历了四个阶段,主要成绩在于保存和整理了一批重要的儒家经典,贡献了一批有多方面学术价值的经解、经注,并在治经的若干原则、方法上形成了"汉学"的特色。     

先秦文学风格观对刘勰“风骨论”的影响

以<诗经>、<尚书>、<国语>、<左传>为代表的诗经时代文学风格观念与"风骨论"有着渊源关系,先秦儒家与道家的文学风格观都不同程度地对"风骨论"产生过影响,先秦诸子和魏晋玄学的风格观对"风骨论"的形成具有更为直接的影响.正是刘勰从"宗经"、"征圣"的复古立场出发,提出了古代文艺理论中属于内容方面的重要范畴--风骨论.     

The finite-sample performance of robust unit root tests

This paper investigates the relative small sample performance of several robust unit root tests by means of a simulation study. It is confirmed that the traditional least-squares based Dickey-Fuller test has substantially lower power than several robust alternatives if the error distribution is fat-tailed while its power gain is small at the normal model. Particularly good results are achieved by a quasi-maximum likelihood test. However, all robust tests under consideration exhibit severe size distortions if the disturbances follow a skewed distribution. Moreover, under additive outliers, robust tests fail to produce stable sizes and good power properties. Consequently, the value of using robust unit root tests depends heavily of the type of nonnormality at hand.     

Missing at random (MAR) in nonparametric regression - A simulation experiment

The additive model is considered when some observations on x are missing at random but corresponding observations on y are available. Especially for this model, missing at random is an interesting case because the complete case analysis is expected to be no more suitable. A simulation experiment is reported and the different methods are compared based on their superiority with respect to the sample mean squared error. Some focus is also given on the sample variance and the estimated bias. In detail, the complete case analysis, a kind of stochastic mean imputation, a single imputation and the nearest neighbor imputation are discussed.     

嘉兴市与金华市经济发展比较研究

本文采用实证分析法,研究了改革开放以来嘉兴与金华在经济总量、经济结构、居民收入水平和生产要素等方面存在的差距,并对差距形成的原因进行了初步探讨.     

张爱玲小说人物形象的悲剧美学体现

对于悲剧的理解,张爱玲认为人性的偏执、情欲的盲目是导致悲剧的主要原因,她关注的焦点始终是人性.尽管她的小说可以说是"对时代颓废与家庭败落的怅惘与悲叹",可以说是对男欢女爱的冷眼旁观,甚至可以说是"开向四十年代沪、港洋场社会的窗口",但这些都不是张爱玲小说的最高命意.相反,它们都构成了张爱玲借此表现人生、探索人性的一个背景,一个五彩缤纷的悲剧舞台,舞台上演的主题只有一个,那就是人性.从此可以看出,张爱玲的悲剧观是对亚里士多德<诗学>悲剧美学思想的极好体现.     

网络环境下数字化产品适用的营销模型研究

互联网和电子商务的广泛应用与开展,为数字产品营销提供了巨大的市场空间.同时,数字产品独特的交易过程也使其营销过程不同与传统产品.本文探讨三种经典的营销模型4P、4C和4S应用到数字产品的营销时的适用性.在已有研究总结出的四条命题基础上,通过三种渠道收集了45个数字产品营销工具作为样本,采用分类方法将三种经典的营销模型作为分类框架,对样本进行分类比较研究,验证了提出的五条假设并发现了三条有意义的结论:其一,数字产品的可试性和其需要的营销工具数量显著相关;其二,三种营销模型对不同种类的数字产品存在适用性的差异;其三,在网络营销环境中,数字产品常用的传输模式(下载和交互)与其适宜的分销方式(网上商店和独立网站)之间存在因果关系.