面向电力的《工程力学》精品课程建设介绍

本文基于对当前我国《工程力学》内容与体系的现状、国内院校教改的经验及本校的教改体会,结合电类高校专业的特点,探讨了工程力学课程的改革方向,并构造了《工程力学》课程的内容体系框架。     

如何运用现代非线性数学方法研究公共交通车辆调度决策系统

时代在进步,经济在腾飞,交通作为经济的命脉,无可质疑的也产生了翻天覆地的变化与发展,但是就目前来看,我国的交通系统由于人口的基数和居民的私家车的增多,交通的压力日趋增大,如何改善这种状况,是本文旨在研究跟探讨的关键所在,本文主要介绍了非线性代数的数学方式来分析和调度交通的车辆,并由此提出了一套利用智能化指导居民出行的优化方案,从而缓解交通压力,提高决策能力,另外,还介绍了一种运用于调度车辆的遗传算法,便于决策者进行参考和配置。     

The equilibrium exchange rates of European currencies and the transition to euro

This study estimates the demand system using Japanese micro data and calculates the cost of living index (COLI) to assess the substitution bias in the Consumer Price Index. The estimated bias during the sample period of 1982–2000 is about 0.06 percentage points, which is larger than the estimates calculated from a superlative index. The difference between the COLI and a superlative index can be explained with the upward movements of the average utility level in Japan, since the cost of living for the rich has grown more rapidly than that for the poor.     

The out-of-sample forecasting performance of nonlinear models of regional housing prices in the US

This article provides out-of-sample forecasts of linear and nonlinear models of US and four Census subregions’ housing prices. The forecasts include the traditional point forecasts, but also include interval and density forecasts, of the housing price distributions. The nonlinear smooth-transition autoregressive model outperforms the linear autoregressive model in point forecasts at longer horizons, but the linear autoregressive and nonlinear smooth-transition autoregressive models perform equally at short horizons. In addition, we generally do not find major differences in performance for the interval and density forecasts between the linear and nonlinear models. Finally, in a dynamic 25-step ex-ante and interval forecasting design, we, once again, do not find major differences between the linear and nonlinear models. In sum, we conclude that when forecasting regional housing prices in the United States, generally the additional costs associated with nonlinear forecasts outweigh the benefits for forecasts only a few months into the future.     

Key Success Factors for Tourism Resort Management

Abstract

NEW HORIZONS IN TOURISM: STRANGE EXPERIENCES AND STRANGER PRACTICES. By Tej Vir Singh. CABI Publishing (Nosworthy Way, Wallingford, Oxfordshire, OX10 8DE UK), ISBN 0-8519-9863-1, 2004, xv + 221-pp. (tables, photographs, bibliography), £49.95 (hardbound). Reviewed By C. Michael Hall

DESTINATION MARKETING ORGANISATIONS. By Steven Pike. Elsevier (The Boulevard, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom), ISBN 0-0804-4306-0, 2004, 231-pp. (bibliography, indices), £59.99 (hardbound). Reviewed By Chris Ryan     

The Taylor Rule and “Opportunistic” Monetary Policy

We investigate the possibility that the Taylor rule should be formulated as a threshold process such that the Federal Reserve acts more aggressively in some circumstances than in others. It seems reasonable that the Federal Reserve would act more aggressively when inflation is high than when it is low. Similarly, it might be expected that the Federal Reserve responds more to a negative than a positive output gap. Although these specifications receive some empirical support, we find that a modified threshold model that is consistent with “opportunistic” monetary policy makes significant progress toward explaining Federal Reserve behavior.     

EXPLICIT SOLUTIONS OF CONSUMPTION-INVESTMENT PROBLEMS IN FINANCIAL MARKETS WITH REGIME SWITCHING

We consider a consumption and investment problem where the market presents different regimes. An investor taking decisions continuously in time selects a consumption–investment policy to maximize his expected total discounted utility of consumption. The market coefficients and the investor's utility of consumption are dependent on the regime of the financial market, which is modeled by an observable finite-state continuous-time Markov chain. We obtain explicit optimal consumption and investment policies for specific HARA utility functions. We show that the optimal policy depends on the regime. We also make an economic analysis of the solutions, and show that for every investor the optimal proportion to allocate in the risky asset is greater in a "bull market" than in a "bear market." This behavior is not affected by the investor's risk preferences. On the other hand, the optimal consumption to wealth ratio depends not only on the regime, but also on the investor's risk tolerance: high risk-averse investors will consume relatively more in a "bull market" than in a "bear market," and the opposite is true for low risk-averse investors.     

汽轮机低压缸振动的原因分析

文章对汽轮电机组运行时低压缸不定期出现振动和冲击的现象进行分析，查找原因，并提出处理方法。     

汽轮发电机安装中预防振动超标措施

本文对汽轮发电机振动超标原因进行了分析,并对预防振动超标措施进行了探讨,为汽轮发电机安装人员提供借鉴参考。     

外军工程机械的特点

结合现代信息化战争的特点,总结了外军工程机械的几大特点,包括通用化、集成化、系列化程度高,技术先进,可靠度高,机动性能好,快速部署能力强以及伪装防护性能好等。