我国基因科技领域合作研究的计量分析

以SCI数据库作为数据检索源,以"Topic=(gene)AND Address=(Peoples R China)"作为检索指令,以1994—2008年共计15年的数据为检索范围,检索得到36008条关于我国基因领域科学研究的论文数据信息。运用科学计量学方法对检索到的数据进行定量分析,揭示我国基因科学领域科学家之间以及机构之间的科学合作状况,探究基因科学领域的科学合作规律。     

再论案例研究法的属性、类型、功能与研究设计

文献荟萃分析与定量研究的导入,使现有质性—实证案例研究在属性、类型、功能与研究设计上发生了许多新变化,也在方法论界引起了许多争议。在梳理这些争议的基础上,提出了广义的案例研究概念。它意味着：将以案例研究为导向的文献荟萃分析（例如非实证多案例研究）与案例调查法纳入案例研究法;按研究资料获取方式或理论创新所处发展阶段,将案例研究类型划分为6种;将案例研究功能归纳为3种;将案例研究设计划分为3种,并为每种方法设计了7个研究步骤。此外,还提出了从非实证到实证、从理论建构到理论发展的全过程案例研究模型,供案例研究者参考。     

我国央行货币政策实施力度和节奏的规律及效果研究——基于历史演进和时变分析的视角

本文在对我国中央银行30年来运用数量型和价格型货币政策工具的力度与节奏进行描述性统计分析的同时,引入时变参数模型对这两类货币政策调控效果的演进趋势和时变特征进行了实证检验。本研究得出以下结论:(1)我国央行对于数量型工具的使用较为慎重,但经济面临较大冲击时往往会高频度、高强度地使用该手段;近期对数量型工具的使用呈现出调整节奏加快、单次调整力度降低的趋势。相比之下,我国央行对价格型工具运用的节奏要“均匀”得多。(2)当经济出现“滞涨”时,我国央行更看重经济增长放缓可能引发的影响,多采用扩张性、但是较“温和”的价格型操作方式。(3)从时变性和演进性角度来看,数量型货币政策对产出的调控效应有所提高,对价格水平的调控效应总体保持稳定。(4)价格型货币政策在复苏期对于产出的作用效力更高,在下行期的作用时滞更短,对价格水平实施调控的效果呈现出时滞期缩短且稳定性提高的趋势。     

Effects of quantitative easing on firm performance in the euro area

This paper examines the effects of quantitative easing on firm performance using firm-level data in the euro area during the Corporate Sector Purchase Programme. We apply a difference-in-difference framework and focus on long-term and short-term book leverage, turnover, and profitability. Despite an increase in leverage, firms in the treatment group did not experience an increase in turnover or profitability as a result of the CSPP. Improved access to credit in the bond market seems to have no statistically discernible effects on the firms' real performance. Our empirical results also show cross country and region heterogeneity in the effects of CSPP. Possible factors driving the results include the limited scope of the CSPP program, financial constraints being less of a concern for firms in the euro area, and that monetary policy is in general less effective in the aftermath of financial crises as the monetary transmission mechanism is partially impaired.     

Collateral rehypothecation,safe asset scarcity,and unconventional monetary policy

We build a mark-to-market model where commercial banks can enlarge their balance sheets, repledging the available collateral several times to exchange liquidity through the interbank market. In bad times, the fall of risky asset price disrupts the length of the repledging chain due to the increase of the haircut and the decrease of external assets' value. In such a scenario, the central bank can intervene implementing unconventional monetary policies by purchasing a fraction of the banking system's external assets, both safe treasury bonds, and risky asset-backed securities, to inject liquidity. Our results show that a quantitative easing policy that purchases only safe assets is highly ineffective in restoring the intermediation activity to the pre-crisis level due to its inability to sustain the risky asset price and the repledging chain of collateral. Instead, focusing on risky assets only, the monetary authority can sustain risky asset prices, avoiding the freezing of the money market.     

What hinders hotels’ adoption of environmental technologies: A quantitative study

In response to our planet’s severe environmental problems, many businesses use environmental technologies to strengthen their environmental performance. However, the adoption rate of using such technologies in hotels is still slow, and very few quantitative studies have examined the reasons why. This study examined the barriers to environmental technology adoption in the Hong Kong hotel industry. We sent 648 questionnaires to the target sample and eventually received 102 completed responses. Seven barriers were identified: (1) monopolised after-sales service; (2) human resource limitations; (3) government and initial support; (4) financial performance; (5) lack of green knowledge and green network; (6) customer experience; and (7) environmental feasibility. An independent samples t-test and analysis of variance (ANOVA) were conducted to investigate the relative significance of the seven barriers for different hotel demographic variables. This study offers specific theoretical and practical implications. Recommendations for the industry are also provided.     

The asymmetric effects of U.S. large-scale asset purchases on the volatility of the Canadian dollar futures market

This paper investigates the asymmetric effects of U.S. large-scale asset purchases on the volatility of the Canadian dollar futures market. This approach is innovative in so far as it examines the effects of allowing two-round impacts to differ in our settings of dynamic volatility with time-varying jump intensity because the world economic situation differs during periods of large-scale asset purchases. Utilizing the daily futures price of the exchange rate for the Canadian dollar against the U.S. dollar, the empirical findings show that U.S. large-scale asset purchases have significant asymmetric effects on the volatility of the Canadian dollar futures market. Two kinds of asymmetry are observed. Firstly, the impact of large-scale asset purchases is smaller in the first round of the large-scale asset purchases than in the second round. Secondly, an expansionary policy causes higher volatility in the Canadian dollar futures market than does a contractionary policy due to a signal of high liquidity.     

The signalling content of asset prices for inflation: Implications for quantitative easing

We investigate the information content of financial variables as signalling devices of two abnormal inflationary regimes: (1) low inflation or deflation, and (2) high inflation. Specifically, we determine the information content of equity and house prices, private credit volumes, and sovereign and corporate bond yields, for 11 advanced economies over the past three decades, using both signalling extraction and logit modelling. The outcomes show that high asset prices more often signal high inflation than low inflation/deflation. However, in some countries, high asset prices and low bond yields are a significant indicator of low inflation or deflation as well. The transmission time of financial developments to inflation can be quite long (up to 8 quarters). For monetary policy, these findings imply that stimulating asset prices through Quantitative Easing (QE) can effectively influence inflation, but that the effects are quite uncertain, both regarding timing and direction.     

定量宽松还是信贷宽松?——基于伯南克货币救助政策创新的思考

进入21世纪还不到10年,日本和美国就先后采取了区别于传统调控机制的新型货币政策——定量宽松政策和信贷宽松政策,以解决自己国家内部的持续通货紧缩问题或全面金融危机问题。本文分别就这两种货币政策的主要内容结合具体国家的实际执行情况展开研究,并从实施目的、运作机理及衡量与监测状态三方面分析了两种政策的不同。     

美联储“量化宽松”货币政策的原因、影响与启示

为应对全球金融危机,美联储实施了非常时期的量化宽松货币政策。本文对美联储实施该政策的原因、积极和消极影响进行了深入分析。同时,美联储未雨绸缪,提出该政策的退出机制,对我国今后一段时期如何在经济逐步启稳后把握恰当的时机和节奏实现适度宽松货币政策的及时转向,防范通货膨胀和资产泡沫风险具有非常重要的启示。