“三农”问题是中国现代化进程中的关键问题

中国不仅以农业大国著称于世,而且也以农民大国著称于世,农民数量大、素质低成为中国实现现代化的巨大制约因素,这就决定了中国农民现代化、农业现代化和农村现代化在我国现代化中的特殊地位.它们不仅构成我国现代化的重要内容,而且成为实现现代化的必要条件.中国现代化进程中必须重视"三农"问题,实现三个转变,即传统农民向现代农民转变,传统农业向现代农业转变,传统农村社会向现代农村社会转变.     

“翻译腔”例析

因理解之误和表达之误所致,"翻译腔"表现各异.作者认为,在英汉翻译中,只有努力钻研原作,充分理解原文的深层含义,熟悉和掌握英汉语言的主要差异,表达符合译语语言习惯,才能使译文流畅自如,提高可接受性,消除"翻译腔".     

加强网络道德建设

随着计算机网络的发展,在21世纪将形成一个与当代工业社会具有不同特征的现代网络社会.现代网络社会作为一个"虚拟"的社会,也是一个充满问题与矛盾的真实社会.它同当代工业社会一样,需要道德建设的支撑.网络道德建设是一项复杂的系统工程.加强网络道德建设具有十分重要的现实意义.     

制造柔性的期权特征及其经济价值度量方法

本文分析了制造柔性的内涵,对其从生产状态变化的目标和产生来源进行了分类,并对制造柔性从期权的视角重新加以了表述.然后提出当存在市场需求、产品价格和可变成本三种不确定源的情形下制造柔性的多阶段期权定价模型,最后结合蒙特卡洛法实现了对项目投资决策阶段柔性经济价值的度量.     

复杂产品系统创新过程中跨组织知识管理的障碍因素

复杂产品系统是由一个创新网络来进行开发和制造的,跨组织的知识管理可以促进该创新过程中知识和信息的流动、扩散和应用。在前人相关研究基础上,通过问卷调查,对复杂产品系统创新过程中知识管理的障碍因素进行了探讨,并指出不同行业的复杂产品系统,在创新过程中知识管理面临的阻碍因素可能有所不同。     

Regression Analysis of Left-truncated and Case I Interval-censored Data with the Additive Hazards Model

In recent years the analysis of interval-censored failure time data has attracted a great deal of attention and such data arise in many fields including demographical studies, economic and financial studies, epidemiological studies, social sciences, and tumorigenicity experiments. This is especially the case in medical studies such as clinical trials. In this article, we discuss regression analysis of one type of such data, Case I interval-censored data, in the presence of left-truncation. For the problem, the additive hazards model is employed and the maximum likelihood method is applied for estimations of unknown parameters. In particular, we adopt the sieve estimation approach that approximates the baseline cumulative hazard function by linear functions. The resulting estimates of regression parameters are shown to be consistent and efficient and have an asymptotic normal distribution. An illustrative example is provided.     

Model Averaging for Prediction With Fragmentary Data

ABSTRACT

One main challenge for statistical prediction with data from multiple sources is that not all the associated covariate data are available for many sampled subjects. Consequently, we need new statistical methodology to handle this type of “fragmentary data” that has become more and more popular in recent years. In this article, we propose a novel method based on the frequentist model averaging that fits some candidate models using all available covariate data. The weights in model averaging are selected by delete-one cross-validation based on the data from complete cases. The optimality of the selected weights is rigorously proved under some conditions. The finite sample performance of the proposed method is confirmed by simulation studies. An example for personal income prediction based on real data from a leading e-community of wealth management in China is also presented for illustration.     

论恩格斯的自然哲学观

恩格斯批判过自然哲学，而他所倡导的唯物辩证法的自然观实际上也是一种自然哲学、对于恩格斯的这种看来有些矛盾的自然哲学观，我国哲学界一直存在严重的理论误解、要弄清楚恩格斯的这种看来有些矛盾的自然哲学观，就必须正确理解恩格斯怎样批判旧的自然哲学；怎样改造旧的自然哲学；以及怎样创立新的自然哲学。     

文姜小议

春秋时齐国女子文姜因性生活问题，遭到后人多方面的贬斥.文姜出嫁鲁国后，鲁国在齐鲁争强中逐渐失势，文姜数度以国君之礼与齐国国君会晤，协调齐鲁关系，增强了鲁国的实力和地位，但史家们却未给予应有的评价.本文认为，文姜不失为古代一位颇有才能的女外交家，不应以瑕掩瑜.     

对学校法制教育状况的反思

本文对学校法制教育的理念、教育实效和课程构建等问题加以探究。