乘用车GDI发动机电子装备振动试验方法的标准化

文章介绍了在乘用车缸内直喷(Gasoline Direct Injection)汽油发动机(以下简称GDI发动机)上装用的电子装备振动环境试验标准化过程和要点。列举了装用在燃油供给、进气、排气等系统中的受试样品(DUT)在试验中可能产生影响的因素。供实验室在设计试验和产品标准制修订时参考。     

流动性约束与货币政策的资产价格效应

本文在新凯恩斯主义分析框架下,基于一个动态随机模型探讨了代理人消费流动性约束下的货币政策的资产价格效应,得到下列结论：资产价格波动通过财富效应影响代理人的消费。以利率为操作目标的最优货币政策应对股价、房价等资产价格波动做出反应,而其反应强度依赖于受流动性约束的代理人所占的比重。由于资产价格波动导致了流动性约束的时变性,最优利率规则对股价、房价等资产价格波动的最优权重也具有时变性。本文的实证分析表明,我国央行对房价和股价波动的利率调整具有时变性,以及此次金融危机爆发期间显现的这种时变性特征,与本文理论分析结果相吻合。     

我国超额货币供应研究的传统视角与新视角

本文首先从超额货币出现的原因、货币流通速度下降、金融深化三个角度对我国超额货币供应问题的研究做了一个综述。然后提出在全球流动性过剩背景下,我国作为一个资本管制的国家,国内货币流动性过剩和国内资产价格的关系可以成为我国超额货币供应的进一步研究方向,并且可以为我国宏观经济调控提供更加可靠的理论和实证依据。     

汽油价格上涨对北京私家车使用的影响

应用logistic回归模型,根据对北京私家车主问卷调查所得数据,研究了私家车主开始减少私家车使用的油价问题。结果显示,私家车主对油价的反应主要受收入和行驶里程的影响,家庭年人均收入越高、年均行驶里程越长,车主对油价上涨的敏感度越低;同时利用研究出的模型预测了油价上涨到10元时不同收入和年均行驶里程的车主开始减少私家车使用的概率。     

The impact of gasoline price fluctuations on lodging demand for US brand hotels

Analyzing US brand hotels, over a 13-year period, this study provides empirical evidence of a significant negative relationship between gasoline prices and demand for certain lodging products, controlling for economic factors (i.e. gross domestic product and population density). Applying principles from microeconomic demand theory to the literatures on gasoline price elasticities, consumer demographics and lodging demand, a set of hypotheses were devised to test the relationship between gasoline prices and lodging demand for specific hotel locations and price segments. Using fixed effects models, the results reveal that lodging demand decreases as gasoline prices rise in all segments except upper-upscale and all locations except urban areas. Hotels in midscale without food and beverage and economy market segments, in resort, suburban and highway locations, exhibit the greatest association between gasoline price shifts and demand. Implications of these findings are discussed for both hospitality research and practice.     

反馈交易、投资者情绪与波动性之谜

摘要：反馈交易理论是金融市场最经典的理论之一,长期以来,对这一理论的研究与建模并不多见。本文给出了在一个具有反馈交易特征的市场中,情绪冲击对资产价格的长期影响模型。我们发现,总的来说,反馈交易会影响认知偏差效应和交易诱导效应,认知偏差效应随反馈交易系数递增。但是,交易诱导效应并不与反馈交易系数呈简单的单调关系,交易诱导效应在一定情形下随着反馈交易系数减小。     

流动性影响资产价格与消费价格的传导机制

对我国1998年1季度到2009年1季度的资产价格与消费价格的波动进行实证分析,发现货币供应量增加首先带来房地产价格上升,约两年后,消费价格指数开始上升,说明货币供应通过资产价格再传导到消费价格。在当前流动性再次增加的情况下,要考虑其对资产价格及通货膨胀预期的影响,并可实行分类增加信贷的政策,防止资产价格泡沫化。     

Modeling and forecasting tourism demand: the case of flows from Mainland China to Taiwan

The study of tourism demand is attracting more and more attention. Hence, it is important to understand the variables that affect tourism demand and to forecast the demand. Many studies have been conducted to analyze the demands in various countries. Recently, China has been expected to become one of the largest originators of outbound tourists in the world. Hence, it is interesting to explore what the variables are that affect the Mainland Chinese arrivals to Taiwan and to forecast its corresponding tourism demand. This study applies neural networks to select proper models, and then to forecast the demand.     

我国审计定价影响因素的实证研究

审计定价与注册会计师的独立性和审计质量息息相关.通过运用2006年沪、深两市上市公司的实证数据对我国审计定价影响因素进行实证研究,结果表明:非审计费用未影响审计定价,董事会规模、董事会勤勉与独立性、事务所品牌、企业规模和子公司数目等直接影响审计定价.