城乡一体化进程中城市二代移民的社会诉求与应对

城乡一体化发展进程中城市二代移民是一个庞大的社会群体。了解他们的诉求,从政策与实践上作出应对,切实维护他们的合法权利,是统筹城乡发展的根本要求,也是贯彻落实科学发展观的根本体现。通过对城市二代移民的生存境遇的阐述,以解读其社会诉求,并提出了相关对策建议。     

宁国市民营企业“二次创业”实现途径研究

在百年一遇的国际金融危机的调整期,唯有在危机中引导企业锐意变革,在管理、文化、体制等方面开拓创新,提高企业经营能力和控制能力,培养核心竞争能力,民营企业才能在危机过后的下一轮发展浪潮中占据优势地位。文章在揭示、剖析宁国民营企业＂二次创业＂存在的困难与挑战的基础上,对其＂二次创业＂的实现途径进行了探究,试图为宁国民营企业指明发展方向。     

“企业化”的关键在于市场

地勘单位企业化是一个绕不开的难题,地勘单位走向市场,走企业化道路,是大势所趋.破解地勘单位企业化难题的关键在于:①政府先要为地勘单位进一步改革垫付成本,帮助他们解决历史遗留问题;②地勘单位要真正按照事企分开的原则进行改革;③地勘队伍要进行专业化分工,为上市创造必要条件;④政府要为地勘单位培育好矿产勘查资本市场和矿业权有形市场.     

TGF-β及其受体对胚胎着床的影响

TGF—β（transforming growth factor—β，TGF—β）是一类在结构上相对保守的生长因子，是细胞增殖、分化、细胞外基质合成和细胞凋亡的主要调节因子之一。近年来也发现，该家族成员的部分因子如TGF—β、骨形态形成蛋白（bone morphogeneticp rotein，BMP）／生长分化因子（growth and differentiation factor，GDF）、激活素／抑制素（Activin／Inhibin）也参与胚胎着床过程，且这些生长因子的表达表现出时空特异性。     

HYSTERESIS IN UNEMPLOYMENT REVISITED: EVIDENCE FROM PANEL LM UNIT ROOT TESTS WITH HETEROGENEOUS STRUCTURAL BREAKS

This paper applies the panel LM unit root tests with heterogeneous structural breaks in level by Im  et al. ( Oxford Bulletin of Economics and Statistics , 67 (2005), pp. 393–419) to re-examine the validity of hysteresis in the unemployment rates of 19 OECD countries. Our empirical findings are favourable to the stationarity of the unemployment rates, i.e., the unemployment hysteresis hypothesis is strongly rejected. Our results suggest that shocks to unemployment rates are temporary and soon converge when we control for breaks. A major policy implication of the study is that a fiscal or monetary stabilization policy would not have permanent effects on the unemployment rates of the 19 OECD countries.     

货币危机理论综述

20世纪 90年代 ,在欧洲、拉美、东南亚以及其它地区发生的货币危机 ,引起了世界范围对货币投机攻击和固定汇率崩溃的关注。为了理解货币危机发生的原因和后果 ,研究人员进行了大量的理论和经验方面的研究工作。本文主要对有关货币危机理论文献进行较为详细的综述 ,为以后的研究提供一个平台。     

Accounting Regulation,Financial Development,and Economic Growth

It is argued that the sustainability of external debts depends on the stationarity of the current account balance. This study tests for the stationarity of current account deficits for a sample of sixteen Latin American countries, employing a new test, advocated by Breuer et al. (2002), that allows one to test for unit roots in heterogeneous panel data sets. This version of the augmented Dickey-Fuller (ADF) test involves estimating ADF regressions within a seemingly unrelated regression (SURADF) framework. The benefits of creating a panel to overcome low test power are well known, but this particular test also offers key advantages over existing alternative panel data unit root tests. Unlike previous tests, this one identifies which members from within the panel are responsible for rejecting the null hypothesis of joint nonstationarity. In addition, the SURADF test does not presume disturbances that are independently and identically distributed. Using annual data covering the period 1979-2001, this study finds strong evidence in favor of current account mean-reversion for at least twelve Latin American countries.     

天然气输送离心式压缩机组故障诊断方法研究

文章介绍了天然气输送离心式压缩机组的常见故障,分析了故障原因及特征,进而对其故障诊断技术现状进行了总结和比较,在此基础上针对输气动力设备故障的复杂性提出了应用数据挖掘技术对离心式压缩机组进行故障诊断的初步设想。     

Assessing economic convergence in the EU: is there a perspective for the ‘cohesion countries’?

This article analyses the stochastic income convergence within the EU-15. The empirical analysis uses per capita GDP, in PPP and in constant prices of 2005 for the period 1950 to 2010. Apart from the traditional DF type tests we also account for possible structural changes. In this direction, we employ the Zivot-Andrews (1992) and the Lee-Strazicich (1999, 2003) testing procedures, for one and two breaks, endogenously determined. Furthermore, we apply the Carlino and Mills (1993) methodology proposed for the detection of β-convergence. The overall evidence supports the existence of two discrete clubs, the first by the ‘cohesion countries’ (Portugal, Ireland, Greece and Spain) and the second by the remaining members. In particular, there is a clear evidence of convergence within each club, whereas between clubs there is a luck of catching-up effects. Furthermore, investigation of correlation between relative per capita GDP of each country and several factors that are often identified as growth stimulants, namely Total Factor Productivity, FDI, investment and openness confirm, with the exception of Greece, a strong association between these factors and the convergence process. However, progress in the convergence has not been uniform across countries and over time, reflecting the specific interactions between domestic and international factors and their impact on the convergence process of individual countries.     

油气田工程超投资分析及措施建议

油气田工程项目中总投资超批复投资的现象普遍存在。要想做好控制投资的问题,必须从编制项目建议书起进行控制。从编制项目建议书就开始树立投资控制的意识和责任可以使得投资立项决策的规划设计更加全面、细致和扎实,通过严谨的招投标工作选择优良的工程承包单位,此外,还要对施工过程进行科学的管理并且严格执行规范的要求。