海南省用水效率测算及可达性分析

针对最严格水资源管理以及水资源消耗总量和强度双控行动提出的效率指标要求,测算海南省预期万元GDP用水量和万元工业增加值用水量,评估用水指标的可达性。阐释了用水效率的影响因素,综合应用时间序列法和灰色等维动态递补模型,对2020年和2025年用水指标进行预测,并将现状年指标与国内外先进水平进行对比分析。结果预估2020年全省万元GDP用水量、万元工业增加值用水量分别较现状年下降27. 7%、36. 2%,能够达到国家要求的控制目标。这一结果为落实水资源消耗总量和强度双控行动提供技术支撑,对于海南省水资源优化配置具有参考价值。     

青海三江源区生态恢复需要解决的几个问题

三江源生态环境不断恶化已经严重阻碍着该地区社会经济的稳定和发展,并严重影响着全流域社会经济的可持续发展;分析了该区面临的主要生态环境问题和主要影响因素。认为全球气候的变化、草场超载过牧、偷捕乱猎、乱采滥挖是生态环境恶化的主要因素;从牧民群众的生产生活、生态移民、生态补偿机制、提高生态意识等方面阐述了恢复生态的对策。     

Explosive bubbles in the US–China exchange rate? Evidence from right-tailed unit root tests

In this article we apply novel right-tailed unit root (sup Augmented Dickey-Fuller (SADF) and generalized sup ADF) tests to the China–US exchange rate. The empirical results document that the recent financial crisis in 2008 may be preceded by early warning signs of exuberance. Using the SADF test, evidence of an explosive behavior in the nominal exchange is found from 2005 onwards. This period coincides with both financial reforms in China and early indications of an impending US crisis that both have been reported in the literature. Our findings suggest that such an explosive behavior may be attributable to differences in the relative prices of traded goods. Policy implications are also derived.     

深圳、河源对口帮扶的现状及可能的创新举措

目前阶段,自主创新、区域协作成为地方发展主导举措方向的大形势下,如何发挥深圳、河源两市的比较优势,创新帮扶形式,实现产业结构调整及转移,值得深入研究。本文回顾了深圳、河源对口帮扶的历程及形式,并提出了一些未来有可能采取的创新举措,供地方政府参考。     

无碱二元泡沫体系配方筛选室内研究

针对三元泡沫驱中强碱对地层及地面设备的腐蚀问题,在室内进行了无碱二元泡沫体系配方筛选研究.通过检测体系的界面张力及泡沫综合指数,确定了二元体系中界面张力可达到10(-3)mN/m的三种无碱化表活剂及其浓度.在此基础上,进一步研究了聚合物分子量、浓度以及不同水质对体系性能的影响,初步确定了二元体系的配方:聚合物分子量为1300万,浓度1200mg/L,表活剂浓度0.3%,配制用水为曝氧污水.二元驱的室内研究为实现无碱化泡沫驱奠定了基础.     

In search of an optimal strategy for yuan’s real revaluation

International commentators seem to have a consensus view that the Chinese yuan is substantially undervalued and the Chinese monetary authority must take speedy actions to redress the currency misalignment by rapid nominal revaluation. This paper argues for a gradualist but comprehensive strategy for adjusting the renminbi’s exchange rate. Taking into consideration the facts that the yuan’s undervaluation is caused by an array of domestic and international factors and that the Chinese central bank cannot effectively invest its growing holdings of foreign reserves, we develop a framework to provide a theoretical underpinning for the optimal strategy for the renminbi’s gradual revaluation. With this strategy, the renminbi undervaluation problem is gradually redressed through a combination of nominal appreciation and higher inflation plus some other structural and macroeconomic policies. This strategy can also allow absorption of external imbalances, hence strengthening the foundation of China’s long-term growth.     

也说“園(园)”

“園(园)”是风景园林学科的“元概念”之一。 现有对“園”的解释主要基于“囗”与“袁”组合的象形认 知,却存在谬误,且未能触及其本质。训诂是传统小学中 用来对汉字进行追本溯源的方法,将训诂学用于厘清“園 (园)”最为原始的音、形、义及其后世流变,揭示“園” 源于“圓”“圜”,最初是与“祀天”功能相关的“自然空 间”。从殷商至战国,“袁”逐渐代替“圓”“圜”中的 “員”“睘”讹为“園”,继承并扩大其字义。简化字“园” 亦有与“祀天”相关的“圓”“圜”的渊源,隐含了古人宇宙 观、时空观的传承。“天人合一”“人与天调”始终是“園 (园)”的基本内涵,是当今风景园林之“元”。     

The evolution of renminbi yuan and the protracted debate on its undervaluation: An integrated review

For virtually a decade, the undervaluation of RMB yuan has become an issue of impassioned debate in international monetary economics. This issue kept the academic and policy circles engrossed in argumentative deliberations. That RMB yuan is undervalued is widely acknowledged. With China's emergence as an economic superpower of the future, this debate no doubt has considerable merit and ramifications. This article examines sang-froid the RMB yuan undervaluation and provides a review of recent and on-going research on it. The mid-2005 currency revaluation and modification of foreign exchange regime has enormous significance in this regard. It became a defining moment in the RMB yuan debate.This article attempts to examine whether accusations of currency manipulation made against China can hold, or are merely disingenuous. It encourages the reader to see whether the RMB yuan should be further appreciated. If yes, whether the misalignment is inordinately large or of incidental order which would be corrected with the passage of time. A good number of econometric exercises were undertaken, using differing methodologies. There was a complete lack of consensus on the misalignment of the RMB yuan. It has slowly appreciated since it abandoned its dollar peg in 2005. As the Chinese economy picks up further growth momentum, the currency appreciation is expected to accelerate.     

人民币汇率制度“棱锥”模型的探索

“汇率棱锥”模型以美元、欧元、日元为基础货币,以它们占全球市场外汇交易总量的百分比为权重,计算得到的加权平均值作为比价基准,即汇率中心价值,简称“汇元”。将所有货币的价值用“汇元”表示,建立以基础货币三角形为底的本币“汇率棱锥”,表示货币的价值与汇率的关系,形成钉住“汇元”的“汇率棱锥”模型。以权重削弱基础货币升贬的影响,以三种货币汇率间的抵消作用实现稳定汇率且降低钉住成本的效果。