A NON-SIGN-PRESERVING RAS VARIANT

We have developed a variant of the RAS generalised iterative scaling method that is able to change the sign between successive iterates, and thus fulfil constraints that are infeasible for existing RAS variants. Like earlier RAS variants, our method can handle constraints on arbitrarily sized and shaped subsets of matrix elements, include reliability of the initial estimate and the external constraints, and deal with negative values.     

The impact of monetary policy on housing market activity: An assessment using sign restrictions

Existing research demonstrates that housing, particularly residential investment, plays an important role in the transmission of monetary policy shocks to the overall economy. With this in mind, this paper investigates the relationship between monetary policy and housing market activity using a relatively new method for identifying monetary shocks. More specifically, a monetary policy shock is identified by explicitly imposing sign restrictions on impulse response vectors. The extra information from sign restrictions is important for new insights regarding the transmission of monetary policy to the housing sector – notably, the results indicate that residential investment is less sensitive to a contractionary shock than standard estimates with recursive restrictions. Given that the response of the housing sector using sign restrictions is smaller than other work using standard identification methods, the work indicates that further research is needed to examine whether other sectors of the economy may be less sensitive to monetary policy than previously thought.     

Rational development under uncertain de facto jurisdictional boundaries

This interdisciplinary study, drawing on knowledge in institutional economics, history, and cartography, uses evidence based on government files up to 1975 and disclosed since 2003, aerial photographs from 1945 to 1975, and NGO publications evidence to show that developers used metes and bounds, namely the original walls of the main fort as modified by public roads, and the surveyed alignment of a stream, to delimit their building lines under uncertain jurisdictional limits of the boundaries of the Kowloon (Walled) City in spite of certitude of the alignments of its walls. In this light, the paper discusses the proposition that to both the Chinese and colonial governments, “Kowloon City”, consistently referred to as the “Kowloon Walled City” (KWC) in post-war official Hong Kong government files and recent English language academic literature, had a great sign value in terms of Peirce’s theory, as it pointed towards something more than a disused solitary fort. This value cannot be dismissed when articulating present heritage management for the KWC as a public Chinese garden.     

The role of credit supply shocks in pacific alliance countries: A TVP-VAR-SV approach

This paper analyzes the effect of loan supply shocks on the real economic activity of Pacific Alliance countries using a Time-Varying Parameter VAR with Stochastic Volatility (TVP-VAR-SV) model which is identified by sign restrictions. Two main results arise from the analysis. First, loan supply shocks have an important impact on real economic activity in all Pacific Alliance countries: about 1% in Colombia, Mexico, and Peru, and about 0.5% in Chile. Thus, its contribution to business cycle fluctuations is similar to that of aggregate supply shocks and aggregate demand shocks in both stability and slowdown periods. Second, the power of loan supply shocks to affect economic activity do not remain constant over the time and its evolution across periods is heterogeneous among all Pacific Alliance countries. The sensitivity analysis indicates that the results of the model are robust to different priors specifications and to multiple sets of sign restrictions.     

The informational dimension of real estate development: A case of a “positive non-interventionist” application of the Coase Theorem

Informed by Coase's (1988) idea that state rules can enlarge a market, Rosa's (2006) idea of information as a private good usable as memes, and Yu's (1981) economics of patent pooling, Schuster's (2005) proposition that government can collect and distribute information as an active tool to influence actors, this paper advances the viewpoint that real estate development forms sign structures for adding information that enhances the values of a site under strategically selected property names. The ideal case of Hong Kong's planning and development by contract is used and compared to the practice in Mainland China to demonstrate these ideas with special reference to its open land registration and information systems, which sell important information memes and the names of properties that can be protected by trademark law.     

Non-parametric momentum based on ranks and signs

This study proposes alternative momentum strategies built on the rank and sign of daily returns. Rank and sign momentum strategies are robust to the presence of extreme price movements. They generate significant profits for short-term holding periods and exhibit no long-term return reversals. More importantly, they subsume traditional price momentum, but not vice versa. In addition, rank and sign momentum strategies experience much weaker momentum crashes. Further evidence indicates that rank and sign momentum profitability is less vulnerable to salient past returns while traditional price momentum winners (losers) tend to be overvalued (undervalued) when they face a higher degree of salience.     

BN周期成分的符号与我国GDP的真实周期

本文从理论上证明了以下的定理：当度量序列持久性的方差比大于1时,BN周期成分的符号应予反号,否则,不予反号。为验证定理,我们设计Monter-Carlo仿真实验,其结果也证实了理论定理。本文的理论结论和仿真结果,第一次从持久性的角度解释了文献中的“周期之谜”。在此基础上,我们应用BN周期分解方法和本文的理论结果,分解我国GDP的BN周期。结果显示,由于我国GDP的方差比为1.97,所以周期成分的符号应反号,由此形成我国GDP的真实周期。样本期内（2000Q2-2011Q4）我国共经历了六轮周期,这六轮周期不仅与我国实际经济增长的波动基本一致,而且与我国所遭遇的主要冲击相吻合;我国经济增长的周期具有波动幅度较大、持续时间又存在明显差异的特征。基于这些特征,本文认为,减弱我国经济增长的周期性波动,应成为宏观调控的重要内容。     

基于Cookie的单点登录实现

单点登录作为统一身份认证的主流实现方案之一,受到越来越多的重视,本文所论述的单点登录解决方案,对于企业权限系统的整合与开发,有着积极的指导意义和使用价值。     

The effect of monetary policy on output in EMU3: A sign restriction approach

This paper examines the effects of monetary policy shocks on output in the three largest euro area economies – Germany, France and Italy (EMU3) – by applying a new VAR identification procedure. The results show that monetary policy innovations are at their most potent in Germany. However, apart from Germany, it remains ambiguous as to whether a rise in interest rates concludes with a fall in output, showing a lack of homogeneity in the responses. Homogeneity in response to a monetary shock is crucial in a one-size-fits-all framework. Nonetheless, the lack of similarity between the responses, which is hypothesised to cause de-synchronised business cycles in optimal currency area literature, is often based on the premise that monetary policy itself is a major source of business cycle fluctuations. This paper concludes that monetary policy innovations play, at most, a modest role in generating fluctuations in output for the EMU3. Consequently, it is less important whether the effects of monetary policy are homogenous.     

城市导视系统设计

城市导视系统设计是指一个完整的城市指示系统,包括行政交通导视系统、商业导视系统、文化旅游导视系统等.城市导视系统系统是城市形象和城市功能的重要组成部分,其合理设计和运用不仅可以使城市生活更加便利,而且也是使城市具有魅力的形象塑造.本文对国内国际上的优秀案例进行分析,并就城市导视系统设计的功能、审美特征以及实施方法进行了探讨.