BAYESIAN ANALYSIS OF A FRACTIONAL COINTEGRATION MODEL

The concept of fractional cointegration, whereby deviations from an equilibrium relationship follow a fractionally integrated process, has attracted some attention of late. The extended concept allows cointegration to be associated with mean reversion in the error, rather than requiring the more stringent condition of stationarity. This paper presents a Bayesian method for conducting inference about fractional cointegration. The method is based on an approximation of the exact likelihood, with a Jeffreys prior being used to offset identification problems. Numerical results are produced via a combination of Markov chain Monte Carlo algorithms. The procedure is applied to several purchasing power parity relations, with substantial evidence found in favor of parity reversion.     

A MODIFIED AVERAGE DERIVATIVES ESTIMATOR

We extend the average derivatives estimator to the case of functionally dependent regressors. We show that the proposed estimator is consistent and has a limiting normal distribution. A consistent covariance matrix estimator for the proposed estimator is provided.     

SEASONAL INTEGRATION FOR DAILY DATA

This paper has two purposes: it introduces the econometric methods used to analyze time series data with general frequency and presents a framework for analyzing economic variables that are measured daily; this special case is then applied to the trading volume of stock markets.     

Do preference reversals generalise? Results on ambiguity and loss aversion

Preference reversals are frequently observed in the lab, but almost all designs use completely transparent prospects, which are rarely features of decision making elsewhere. This raises questions of external validity. We test the robustness of the phenomenon to gambles that incorporate realistic ambiguity in both payoffs and probabilities. In addition, we test a recent explanation of preference reversals by loss aversion, which would also restrict the incidence of reversals outside the lab. According to this account, reversals occur largely because the valuation task endows subject with a gamble, activating loss aversion. This contrasts with the choice task, where the reference point is pre-experiment wealth. We test this explanation by holding the reference point constant. Our evidence suggests that reversals are only slightly diminished with ambiguity. We find no evidence supporting their explanation by loss aversion.     

"阿里巴巴"发展历程及其B2B2C模式分析

“阿里巴巴”经历了8年的全面发展，建立了自己独特的经营模式，并对电子商务进行了全新解释，推出了一项新的网络经营模式——B282C模式。这种新的网络经营模式不仅为生产商降低了生产和营销的成本，同时也使“阿里巴巴”巧妙避开了由于配送、物流和库存等形成的瓶颈，为电子商务行业的继续发展开辟了新的道路。     

中国日语学习者惯用语偏误与构式语法

日语惯用语是一种典型的构式,它与句型对立、并列构成构式的下位分类。构式间误用即相同图式构式框架下的近义的实例构式的误用,这些实例构式间存在着相似性和差异性。ためになる和薬になる二构式的差异性表现为：在形式上ためになる前一般为领属定语,凸现的是领属关系;薬になる前一般为性质定语,凸现的是定性关系。在意义上薬になる的当事仅限于负面事物。而ためになる不仅没有这一限制,反而以正面事物为主。构式内偏误为相同构式里构式义、词汇义的误用。试验证明,学习者水平越高,对构式义的掌握程度越好;学习者水平越低,受构式中词汇义影响就越大。与构式语法“人们只能通过模仿和记忆才能掌握其形式和意义之间的关系”的观点吻合,中高级学习者对构式的模仿记忆的数量和频率都居高位,所以他们出现构式性偏误几率较低。     

浅析C3植物和C4植物对大气中CO2浓度升高条件下的反应

比较分析了全球气候变暖和大气中CO2浓度升高的条件下,C3植物与C4植物会在光合速率和光呼吸,有机碳分配和根际碳流,气孔运动及工关作用,氮素利用率,。植物生长发育及产量构成五方面所做出的反应,并对未来有关该方面的研究做了展望。     

"C语言程序设计"教学中存在的问题与建议

文章指出在C语言教学中普遍存在的一些问题,提出在"C语言程序设计"课程建设中,应以程序设计和a实验为主,更新教学内容,采用新颖的授课方式,培养学生运用C语言解决实际问题的能力和创新能力.     

浅谈“Fe-Fe_3C相图”多媒体课件制作

文章从 CAI和传统教学的优缺点谈起 ,分析了“工程材料”这门课程的特点 ,指出了使用多媒体辅助教学的必要性。对于“Fe-Fe3C相图”多媒体课件 ,作者简单介绍了其主要内容及操作特点 ,并且对课件的制作过程及各种多媒体素材的准备作了较为详细的阐述。     

ICT and Rural Development: a Study of Warana Wired Village Project in India

In the present century, the advancements in information and communication technologies (ICTs) are changing the various components of human life. The changes in the ICTs have brought a positive impact in the process of public service delivery and socio-economic structure of communities. In India, e-Governance applications in the recent past have demonstrated their positive impact in minimizing the processing costs, increase transparency and support economic development by income generating ventures, increase in agricultural production, and improvements in health and education sectors, all of which promote the overall quality of life of rural people. This paper reviews the e-Governance initiative called the Warana Wired Village Project in the rural areas of Maharashtra, India. It evaluates the contribution of Warana Project in providing the transactional services for the rural people with the benefit of time and cost savings in obtaining the public services with efficiency and effectiveness and it also examines changes in agricultural productivity and improved quality of life due to the ICT services.