工业用苯乙烯纯度测定方法的探讨

探讨了苯乙烯纯度分析的方法，分析了在苯乙烯纯度测试过程中的各种影响因素，从中可以看出采用毛细管柱（尤其是大口径毛细管柱可以在要求准确，快速的常规中控分析中采用归一化法代替内标法进行定量，这在实际工作中有着非常重要的意义。     

全球化的测度与比较

本文通过构造全球化指数,测度全球122个国家或地区1998至2004年的相对全球化水平,并以此对各经济体全球化水平进行排序和分析。除亚洲的新加坡和中国香港外,全球化程度高的经济体基本上为欧洲和北美等发达国家。发展中国家的全球化发展水平大大低于发达国家。     

关于主动性决策理论(非理想系统决策理论)的研究

本文介绍了主动性决策理论研究的概貌,它的若干概念、原理和研究方向。作为它的理论基础,还探讨了系统组织化不完备性原理和非理想系统概念。     

Two‐level CES Production Technology in the Solow and Diamond Growth Models*

The two‐level CES aggregate production function—that nests a CES into another CES function—has recently been used extensively in theoretical and empirical applications of macroeconomics. We examine the theoretical properties of this production technology and establish existence and stability conditions of steady states under the Solow and Diamond growth models. It is shown that in the Solow model the sufficient condition for a steady state is fulfilled for a wide range of substitution parameter values. This is in sharp contrast with the two‐factor Solow model, where only an elasticity of substitution equal to one is sufficient to guarantee the existence of a steady state. In the Diamond model, multiple equilibria can occur when the aggregate elasticity of substitution is lower than the capital share. Moreover, it is shown that for high initial levels of capital and factor substitutability, the effect of a further increase in a substitution parameter on the steady state depends on capital–skill complementarity.     

试论证券投资者利益的保护

我国证券市场是一个不太成熟的市场,证券投资者的利益经常受到侵害。要保护投资者的利益,必须建立规范的社会信用体系,防止信用缺失,规范政府行为,改变“政策市”形象,提高证券投资者自身素质,学会理性投资。     

疫情常态化形势下物业企业应急管理的思考

在疫情防控的过程中,物业企业在社区新冠肺炎疫情防控方面表现十分突出,在防疫一线发挥了关键作用,在疫情常态化的时代背景下应如何完善应急管理体系,对于物业企业来说至关重要。梳理国内外有关应急管理的研究,从系统科学理论、生命周期理论、整体性治理理论、协同治理理论等视角,审视当前物业企业应急管理工作的现状以及可能存在的问题,并提出相应建议。     

The price normalization problem in imperfect competition and the objective of the firm

Summary. General equilibrium models of oligopolistic competition give rise to relative prices only without determining the price level. It is well known that the choice of a numéraire or, more generally, of a normalization rule converting relative prices into absolute prices entails drastic consequences for the resulting set of Nash equilibria when firms are assumed to maximize profits. This is due to the fact that changing the price normalization amounts to altering the objective functions of the firms. Clearly, the objective of a firm must not be based on price normalization rules void of any economic content. In this paper we propose a definition of the objective of a firm, called maximization of shareholders' real wealth, which takes shareholders' demand explicitly into account. This objective depends on relative prices only. Real wealth maxima are shown to exist under certain conditions. Moreover, we consider an oligopolistic market and prove the existence of a Nash equilibrium in which each firm maximizes the real wealth of its shareholders. Received: July 10, 1997; revised version: July 27, 1998     

一种高效的Turbo码硬件实现算法

针对Turbo码译码实现中硬件消耗、时延和纠错性能之间的矛盾，对Turbo码硬件实现中的译码算法进行了优化研究，提出了一种基于MAX-Log-MAP算法的高效Turbo码硬件实现算法。实验表明，本文所实现的Turbo码是硬件消耗与译码性能的良好折衷。     

Distribution of residual autocorrelations for multiplicative seasonal ARMA models with uncorrelated but nonindependent error terms

In this paper, we consider portmanteau tests for testing the adequacy of multiplicative seasonal autoregressive moving‐average models under the assumption that the errors are uncorrelated but not necessarily independent. We relax the standard independence assumption on the error terms in order to extend the range of applications of the seasonal autoregressive moving‐average models. We study the asymptotic distributions of residual and normalized residual empirical autocovariances and autocorrelations under weak assumptions on noise. We establish the asymptotic behavior of the proposed statistics. A set of Monte Carlo experiments and an application to monthly mean total sunspot number are presented.     

二元结构环境下的IPO定价模型研究

本文传承我国国情和股票发行定价制度的历史、现状,基于相对估价法的基本原理,采用"变异系数法"分析企业特质,辅之以相关性的技术处理,构建了一个企业特质评价指标体系,采用"标准化加权评价法"加以评价后,创造性地通过"标准差倍数法"的技术处理将之纳入定价模型.然后分别立足于一级市场和二级市场,构建一步静态模型和两步静态模型,为检验模型的应用效果,本文提出了IPO定价的四个检验标准,并做了实证检验评估.最后结合新股循价制度改革和实践,对IPO定价问题做进一步的检验探讨.