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81.
We analyse the optimal location choice of a monopolistic firm that operates two arbitrarily located platforms on a two‐sided market. By extending the traditional Hotelling framework, we show that the optimal platform locations are equivalent to the one‐sided benchmark if both sides are either restricted to single‐ or multi‐homing. In the mixed case (one side single‐homes, the other one multi‐homes), the optimal platform locations are in line with the respective symmetric case. If the monopolist is restricted to choosing the same location on either side of the market, the optimal locations are determined by the relative profitability of the market sides. 相似文献
82.
Urban growth is a major theme in economic development and a policy imperative for developed countries that seek to create sustainable cities. We argue that the past weighs heavily on the ability of societies to sustainably manage urban environments. The policy implications of urban history are revealed in comparisons of cities across times and between places. The special issue presents some of the best recent work on the economic and social history of Australian cities. We aim to encourage historians to incorporate urban variables into studies of historical processes and to persuade policymakers to consider historical trends in their analysis. 相似文献
83.
结合城镇污水处理厂脱氮除磷改造工程实例,对老氧化沟进行功能区划分、设备改造:增加好氧区溶解氧浓度,降低缺(厌)区溶解氧浓度;同时适当增容,延长氧化沟水力停留时间和污泥泥龄。运行结果表明,系统出水主要指标稳定达到GB18918—2002一级A标准。 相似文献
84.
Jenny Gregory 《Australian economic history review》2009,49(1):34-51
This article examines the remaking of Perth's Central Business District (CBD) during the 1950–90 period. It traces the establishment of a modernist development ethos in Perth's planning, outlines the inadequacy of the City's planning regulations, and analyses the impact on St George's Terrace, the city's main commercial thoroughfare. The City Council was largely incapable of restraining excessive development and the extension of its system of plot ratios encouraged manipulation to increase the height of developments. Several important historic buildings were demolished because there were no legal means of safeguarding the city's heritage until 1990. 相似文献
85.
This paper examines mean reversion in real effective exchange rates in six leading Latin American economies during the XXth century using a new data set. A unit-root approach is complemented by an error-correction model including key fundamentals such as terms of trade, trade openness and relative productivities. Unit-root testing shows a very slow process of reversion – if any – to a constant mean in the original series, rejecting the strict PPP hypothesis; however, mean reversion is found after allowing for trends and structural breaks with a half-life average of 1½ years for the six countries. We also found reversion to a conditional mean defined by the co-integrating relationship with an average half-life of 2½ years. Our estimates, although lower than the 3–5 year range that motivated the Rogoff’s puzzle, still indicate the presence of important obstacles to the adjustment process that need further investigation. 相似文献
86.
Helen Slater Neil M. Davies Simon Burgess 《Oxford bulletin of economics and statistics》2012,74(5):629-645
Using a unique primary dataset for the UK, we estimate the effect of individual teachers on student outcomes, and the variability in teacher quality. This links 7,305 pupils to the individual teachers who taught them, in each of their compulsory subjects in the high‐stakes exams at age 16. We use point‐in‐time fixed effects and prior attainment to control for pupil heterogeneity. We find considerable variability in teacher effectiveness, a little higher than the estimates found in the few US studies. We also corroborate recent findings that observed teachers’ characteristics explain very little of the differences in estimated teacher effectiveness. 相似文献
87.
Daniel Rösch 《Journal of Banking & Finance》2012,36(3):733-748
This paper analyzes the capital incentives and adequacy of financial institutions for asset portfolio securitizations. The empirical analysis is based on US securitization rating and impairment data. The paper finds that regulatory capital rules for securitizations may be insufficient to cover implied losses during economic downturns such as the Global Financial Crisis. In addition, the rating process of securitizations provides capital arbitrage incentives for financial institutions and may further reduce regulatory capital requirements. These policy-relevant findings assume that the ratings assigned by rating agencies are correct and can be used to build a test for the ability of Basel capital regulations to cover downturn losses. 相似文献
88.
Australian universities were first established in the 1850s, well before the introduction of compulsory schooling. From the middle of the twentieth century, the introduction of mass secondary school education and the expansion of the number of universities widened student access to universities. Subjects offered in higher education increased in scope and labour market discrimination diminished. These factors, together with supply‐side changes, meant that women were more easily able to shift into investing in skills. By 1987, Australian women were more likely than men to be enrolled at a university. These aggregate figures, however, disguise considerable heterogeneity across fields of study. 相似文献
89.
军事经费的来源毫无疑问是任何一场战争都必须面对的一个基础性问题,寻找军事经费的来源是财政备战的最重要因素,没有相应的军事经费,战争就无从谈起。俄国在18世纪初成为世界强国之后,为了维持它的强国地位,坚持对外扩张的政策,连年战事不断。进入20世纪,俄国经历了日俄战争和第一次世界大战。然而对于财政经济状况不断恶化的俄国来说,面临战争经费短缺是很正常的,而筹措战争经费则属难事。俄国战争经费来源主要有税收、债务和发行纸币三个方面。 相似文献
90.
This paper analyses the relationship between corporate taxation, firm age and debt. We adapt a standard model of capital structure choice under corporate taxation, focusing on the financing and investment decisions typically faced by a firm. Our model suggests that the debt ratio is associated positively with the corporate tax rate and negatively with firm age. Further, we predict that the tax-induced advantage of debt is more important for older firms than for younger ones. To test these hypotheses empirically, we use a cross-section of around 405,000 firms from 35 European countries and 127 NACE three-digit industries. In line with previous research, we find that a firm's debt ratio increases with the corporate tax rate. Further, we observe that older firms exhibit smaller debt ratios than their younger counterparts. Finally, consistent with our theoretical model, we find a positive interaction between corporate taxation and firm age, indicating that the impact of corporate taxation on debt increases over a firm's lifetime. 相似文献