劳动收入占比的影响因素研究——基于区域与产业特征互动的视角

文章基于区域与产业特征互动的视角,从理论和实证两个方面分析了影响制造业劳动收入占比的因素。研究结果表明：制造业的资本深化、技术水平提高往往都会伴随着更密集的人力资本投入,导致劳动收入占比提高;市场化进程因弱化了国有企业承担的社会职能,在短期内劳动收入占比往往会下降;地方政府间围绕外资招商展开的竞争,增大了外企资本对工人博弈力量,不利于劳动收入占比提高;在劳动密集型产品国际贸易条件不断恶化背景下,为扩大产品出口需要在产品中镶嵌更多的知识投入,因此伴随一个地区的外贸扩张,其制造业劳动收入占比往往会提高。      

一种雷达频率源的简易设计方法

针对传统多功能雷达频率源方案复杂、体积大、成本高的缺点,提出了一种雷达频率源的简易设计方法。该方法基于高频主振分频的频率合成方案,并通过信号频率的组合设计进一步简化了电路形式,成功实现了某型雷达所需的线性调频激励源、捷变频本振源、多普勒模拟源、采样时钟等多路信号的输出,X频段信号相位噪声达-106 dBc/Hz@1 kHz和-114 dBc/Hz@10 kHz,跳频时间小于2 ??s,性能指标与采用直接频率合成实现的雷达频率源相当。     

中国中心城市第二住宅的地理空间分布特征

1990年代后期第二住宅在中国大量兴起,并成为一种社会风潮。大量涌现的第二住宅对其发生地产生了复杂的社会、经济影响,最为突出的是拉动房价上涨,使得矛盾原本就比较突出的住房问题进一步恶化。文章从第二住宅研究的障碍、难点着手,首先分析了国内发展和研究的状况,随后对西方和国内发展状况和空间布局研究动向进行了剖析。在此基础上,采用补偿理论对中国第二住宅的空间分布特征进行假设性分析,认为中心城市第二住宅的发育与首位度具有密切的关系,并且存在向内城集聚的倾向。这一研究结论可以作为政策制定和其它研究的参考。     

外商直接投资技术外溢对我国产业发展影响的实证分析

我国吸引外商直接投资的不断上升,使得人们越来越关注大量外资的流入对我国经济与社会发展所产生的影响,其中焦点之一是是否存在着外资对国内企业发展的技术外溢效应。本文以前人研究成果为理论分析背景,对我国吸引外商直接投资的技术外溢效应进行了实证检验,得出了外商直接投资对我国经济发展、技术进步具有正外溢效应的结论。认为大力吸引外资作为一项基本国策应长期坚持下去。     

浅析我国钢铁行业的微利现象

目前我国处于工业化和城镇化加速发展的阶段,在强大需求的拉动下,钢铁工业迅速发展,但近几年受需求减少以及生产成本增加的影响,钢铁行业一直在微利状态下运行。文章通过分析52家国内钢铁上市企业的经营情况,进而探讨钢铁行业存在的问题以及可能的应对措施。     

Rebates in a Bertrand game

We study a price competition game in which customers are heterogeneous in the rebates they get from either of two firms. We characterize the transition between competitive pricing (without rebates), mixed strategy equilibrium (for intermediate rebates), and monopoly pricing (for larger rebates).     

钢结构主次梁连接节点的设计

与其它结构材料相比,钢结构具有良好力学性能以及容易加工等一系列优点,这使它在现代厂房及操作平台等工业建筑中倍受青睐,其节点设计的安全性显得非常重要。文章运用极限状态设计法,从各个方面深入分析考虑节点的安全性,有一定的创见性。     

A generalization of the Binomial distribution based on the dependence ratio

We propose a generalization of the Binomial distribution, called DR‐Binomial, which accommodates dependence among units through a model based on the dependence ratio (Ekholm et al., Biometrika, 82, 1995, 847). Properties of the DR‐Binomial are discussed, and the constraints on its parameter space are studied in detail. Likelihood‐based inference is presented, using both the joint and profile likelihoods; the usefulness of the DR‐Binomial in applications is illustrated on a real dataset displaying negative unit‐dependence, and hence under‐dispersion compared with the Binomial. Although the DR‐Binomial turns out to be a reparameterization of Altham's Additive‐Binomial and Kupper–Haseman's Correlated‐Binomial distribution, we believe its introduction is useful, both in terms of interpretability and mathematical tractability and in terms of generalizability to the Multinomial case.     

论企业柔性化管理

管理决定企业的成败。现代企业都在探索尝试着各种管理模式,以求达到规范、高效运营企业。目前,许多私人企业采取家族式的管理,企业在生产经营过程中出现了许多问题。许多国有或国有控股企业实施刚性管理,效果也不理想,反而使企业失去了活力。文章试图从内心管理的角度出发,论述企业的柔性化管理。     

Direct effect of ownership and technology import: Firm level evidence from large and medium-enterprises in Shanghai

This paper explores the direct effect of ownership and technology imports under the framework of neoclassical economic theory. The econometric analysis is based on panel data from a random sample of large and medium-enterprises in Shanghai, during the period of 1998 to 2003. The results show that Sino-foreign joint ventures, Sino-foreign cooperative enterprises and foreign-funded enterprises (SANZI) enjoy higher labor productivity and total factor productivity (TFP) than domestic enterprises. Intra-firm diffusion of non-codified technology, proxied by ownership, is the main source of their better performance, whereas internally transferred codified technology makes little contribution to TFP. For state-owned enterprises, codified technology imports have significantly raised both labor productivity and TFP, but such positive effect is significantly dependent on the S&T human resource. In contrast, no evidence supports that introduction of foreign technology has enhanced the productivity in domestic nonstate-owned enterprises. The empirical results indicate that SANZI do not have a distinct advantage in their codified technology. In addition, inadequate investment in assimilation process and research and development together with inefficient management of science and technology activities, may impede the use of imported technology. __________ Translated from Jingji Yanjiu 经济研究 (Economic Research Journal), 2006, (3): 90–102