基于空间句法的北京市展览路街道公共空间使用评价及提升对策研究

以北京市展览路街道为例,将空间句法的模型应用到公共空间的建成环境使用后评价中,利用视域分析、深度值和整合度与地理加权回归模型,结合实地观察法,构建出由三种空间句法模型组成的公共空间使用情况评价体系.分别对潜在可提升的公共空间、不同人群活动行为特征以及活力和功能未匹配的空间进行分析,从而筛选出有待提升的空间,并结合空间使用者的行为需求,总结空间所存在的共性问题,提出相对应的提升对策,以指导具体的公共空间设计.     

Nonlinear trend stationarity in global and hemispheric temperatures

This study investigates the issue of whether our Earth’s surface temperature exhibits a stochastic trend. Using state-of-the-art econometrics, we analyse the latest available temperature anomaly data. Our results indicate that both global and hemispheric temperatures may appear to have a stochastic trend when in fact they are stationary around a nonlinear deterministic trend and structural breaks are responsible. Furthermore, the nonlinearity found in the temperature trend is more complex than what has been reported in previous studies.     

The interactive effect of LMX and LMX differentiation on followers’ job burnout: evidence from tourism industry in Hong Kong

Building on the conservation of resources theory, we posit that leader–member exchange (LMX) serves as a valued resource to reduce followers’ job burnout. Informed by the theoretical arguments of reference group theory and norm of equality, we further propose two sets of competing hypotheses to test whether LMX differentiation within teams enhances or dampens the effect of LMX on relieving job burnout. Using a sample of 288 travel agents in Hong Kong, we find a negative relationship between LMX and emotional exhaustion. In support of the prediction of norm of equality, the results show that the negative relationships between LMX and emotional exhaustion and between LMX and diminished sense of personal accomplishment were stronger when LMX differentiation was low. Implications for theory and managerial practice and future research directions are discussed.     

企业的性质再考察

本文认为,企业存在的基本原因是消费者或需求者之间的交易成本不为零。企业是一种节约需求者交易成本或应对该交易成本的经济机制。在真实世界中,异常高昂的需求者交易成本使企业更多地充当奥地利学派意义上的市场发现者,同时又是新古典意义上的生产者或Coase意义上的市场替代者。本文发展了一个整合此三种角色的统一企业理论。     

The Norwegian banking crisis: Managerial escalation of decline and crisis

This paper examines the impact and nature of managerial contribution to the Norwegian banking crisis. Numerous findings are reviewed which suggest that many bank managers produced inappropriate responses to the initial decline and subsequent crisis, and thus contributed to the crisis, due to a set of common managerial misrepresentations of the situation. These include: external attribution of failure, overoptimism and overconfidence, the confirmation trap, the illusion of control, irrational escalation of commitment and insufficient adjustment.     

On financial guarantee insurance under stochastic interest rates

We extend the financial guarantee insurance literature by modeling, under stochastic interest rates, private financial guarantees when the guarantor potentially defaults. By performing numerical simulations under plausible parameters values, we characterize the differential impact of the incorporation of stochasticity of interest rates on the valuation of both public and private guarantees.     

The Optimal Distribution of Pollution Rights in the Presence of Political Distortions

A critical issue in designing a system of tradable emission permits concerns the distribution of the initial pollution rights. The purpose of this paper is to investigate how the initial rights should be optimally set, when the determination of the number of tradable permits is subject to the influence of interest groups. According to the Coase theorem, in the case where there are low transaction costs, the assignment of the initial rights does not affect the efficiency of the final resource allocation. In the presence of political pressure, we show that the distribution of the initial rights has a significant effect on social welfare. In contrast to the conventional results, we find that grandfathered permits may be more efficient than auctioned permits, even after taking into consideration the revenue-recycling effect.      

Efficiency wages and tax policy

The conventional belief suggests that a tax increase can be regarded as an anti-inflation device because it reduces the aggregate demand. This paper makes a new attempt to reexamine the belief by introducing the principal tenets of the efficiency wage hypothesis. It is found that, in the context of an efficiency wage model, a rise in the income tax may stimulate the domestic price level, rather than depress it.     

Effective fair pricing of international mutual funds

We propose a new methodology to provide fair prices of international mutual funds by adjusting prices at the individual security level using a comprehensive and economically relevant information set. Stepwise regressions are used to endogenously determine the stock-specific optimal set of factors. Using 16 synthetic funds whose characteristics are extracted from 16 corresponding actual US-based Japanese mutual funds, we demonstrate that our method estimates fund prices significantly more accurately than existing methods. Although existing fair-pricing methods provide an improvement over the current practice of simply using Japanese market closing prices, they are still highly vulnerable to exploitation by market-timers. By contrast, our method is the most successful in preventing such strategic exploitation since no competing method can profit from our stated prices.     

Axcox X荧光光谱仪在平果万佳立窑水泥生产中的应用

将大型转窑水泥企业配套专用的先进检测仪器应用于中小立窑水泥企业生料控制系统,增产质优节能减,排效果明显,对采用高新技术提升中小立窑水泥企业具有指导性意义.