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我国客运专线所采用的42号道岔,由于其超长特性和弹性钢轨与刚性辙叉的组合特性,给运输方案的制订提出更高的技术要求。借鉴普通平车装运长钢轨的运输技术,经过理论计算,研究制订了普通平车装运42号道岔的运输方案。该方案的研制和应用为客运专线大型道岔的铁路运输探索了一种新的运输方式,对货物运输装载加固技术的创新和发展具有积极的推动作用。 相似文献
3.
This paper examines whether it is optimal for inflation-targeting central banks to respond to exchange-rate movements. The paper finds that exchange-rate movements can provide a signal on the developments in the economy that the central bank cannot perfectly observe. The results suggest that when the degrees of exchange-rate pass-through and international financial integration are high, it is optimal for the central bank to pay more attentions to exchange-rate movements. These results however depend on two conditions: 1) the ability of the central bank to observe the true exchange-rate process and 2) the number of real frictions in the model economy. 相似文献
4.
Leading academic and professional accountants have suggested that the crisis in auditing over the past few years may have had its origin in deregulation which allowed firms to advertise their services and solicit new clients, encouraging accounting firms to become more commercial. In this paper, we look at this issue in New Zealand which has the unique distinction of having separated two key forms of deregulation, namely advertising and solicitation, by 6 years. This allows us to separately examine the effect of each form of market competition on audit fees. We find that advertising is associated with increases in fees, not decreases, which suggests that quality-based advertising took place, and not price-based advertising. In contrast, solicitation corresponded with a general decrease in average fees for clients of the Big 8. We interpret this result as indicating an increase in competition among accounting firms. Our results suggest that there may be a much more complex relationship among market competition, advertising and solicitation, and fees than the arguments used to originally justify deregulation. 相似文献
5.
This study examines whether auditors adjust their effort and pricing decisions for political visibility. We argue, from the behavioural literature, that political visibility will create the need for more justification by auditors. Using data on actual audit fees, hours and billing rates for a sample of New Zealand public sector companies, we find that total audit fees are positively related to the number of press mentions (our proxy for political visibility). Consistent with our expectations we find that audit fees are monotonically related to audit fees. We also find that auditors increase the hours spent on the audit but not billing rates, which further suggests defensive bolstering by auditors. 相似文献
6.
Recent fiscal stimulus packages depend for their effectiveness on the assumption of non-Ricardian savings behavior. We show that, under the same assumption, higher fiscal deficits can have problematic implications if they turn out to be permanent. First, if they occur in large countries they significantly raise the world real interest rate. Second, they cause a short run current account deterioration equal to around 50% of the fiscal deficit deterioration. Third, the longer run current account deterioration equals almost 75% for a large economy such as the United States, and almost 100% for a small open economy. 相似文献
7.
Enforcement of international environmental quantity regulations (e.g. tradable pollution permits) is often expected to be stricter than that of price regulations (e.g. emission taxes). While both instruments provide opportunities for misrepresenting actual pollution, enforcement of international price-based instruments is additionally hampered by potential fiscal cushioning, i.e. an adjustment of domestic fiscal policies offsetting the tax incentive to reduce emission reductions. The present paper extends the formal debate on Prices vs. Quantities by including the risk of fiscal cushioning. We find the level of the marginal benefit curve and the variance of costs become key elements for instrument choice and can render quantity regulations strictly preferable. Remarkably, in the latter case, the slopes of the marginal curves do not affect optimal instrument choice. Numerical calculations, using data taken from the international climate policy context, support the potential dominance of quantity regulations found in our formal analysis. 相似文献
8.
Annika Herr 《The German Economic Review》2011,12(4):422-437
Abstract. Hospital markets are often characterized by price regulation and the existence of different ownership types. Using a Hotelling framework, this paper analyses the effect of heterogeneous objectives of hospitals on quality differentiation, profits and overall welfare in a price‐regulated duopoly with exogenous symmetric locations. In contrast to other studies on mixed duopolies, this paper shows that, in this framework, privatization of the public hospital may increase overall welfare. This holds if the public hospital is similar to the private hospital or less efficient and competition is low. The main driving force is the single‐regulated price which induces under‐provision (over‐provision) of quality of the more (less) efficient hospital compared with the first best. However, if the public hospital is sufficiently more efficient and competition is fierce, a mixed duopoly outperforms both a private and a public duopoly due to an equilibrium price below (above) the price of the private (public) duopoly. This medium price discourages over‐provision of quality of the less efficient hospital and – together with the non‐profit objective – encourages an increase in quality of the more efficient public hospital. 相似文献
9.
Thomas J. Miceli 《Information Economics and Policy》2011,23(2):182-188
The “puzzle” of blackmail is that threats to reveal private information that would be harmful to someone in exchange for money are illegal, but revelation is not. The resolution is that concealment of information about product quality impedes the efficient operation of markets, whereas revelation promotes it. The real puzzle is why possessors are not naturally inclined to sell to uninformed parties, who value the information more than would-be blackmail victims. The answer has to do with the public good qualities of information, which create an appropriability problem in transactions with uninformed parties. The paper also discusses incentives to acquire compromising information. 相似文献
10.
This paper explores whether policy coordination or a single monetary policy implemented earlier would have kept the U.K. in the process of European monetary integration. On the basis of the pre-ERM crisis empirics by Douven and Plasmans (1996), a counterfactual game simulation approach is used, and five scenarios are established for comparison with the actual historical records. The final answer is negative. 相似文献