F六H型飞机多发性电气故障分析

为掌握F六H型飞机多发性电气故障的发生规律,提高维修的针对性,文章收集了2003—2004年20架F六H型飞机134起电气故障的发生情况,按照电气各系统、设备故障分布情况进行统计。通过故障模式分析,统计出电源系统、起动系统、供油系统和液压刹车系统故障分布情况,进而分析各类故障存在的特点,并根据故障特点提出了解决故障的方法和建议。     

基于UG的螺旋桨逆向建模

文章对螺旋桨的一般设计过程和基于UG的建模功能,以及对已有的螺旋桨进行逆向建模的整个过程进行了系统介绍。     

中国农村居民旅游消费的多元线性回归分析

进入新世纪,中国旅游业进入了战略转型时期,由于国际旅游市场竞争日趋激烈与金融危机的冲击,入境游明显受挫以及国内旅游需求日益增长,国内旅游逐渐在我国的旅游市场上占据主导地位。过去,在我国的旅游消费群体中,主要消费群体为城镇居民,因而人们更多地将目光集中在对城镇居民的旅游消费研究上。但近几年来,农村居民的旅游人数和旅游花费也在显著增长。文章通过对我国农村居民旅游消费进行多元线性回归分析,阐述了我国农村居民的旅游消费状况,研究了各种因素对我国农村居民旅游消费的不同影响,为策划国内旅游市场未来的发展提供了可供参考的政策建议,并预测未来的旅游消费情况,试图找到挖掘我国农村居民旅游消费市场的巨大潜力的有力措施。     

电缆故障查找技术及实际应用

文章总结归纳了高压电缆故障特点、排查方法以及电缆故障测试仪的使用技巧,并通过分析7.28中心站334#高压电缆故障的排除过程,就我厂实际情况对电缆可能出现的故障及查找方法进行了归纳总结,提出了相应的解决方案。     

浅谈公路工程项目施工网络图的优化

文章针对传统的公路施工网络图优化中存在的问题和不足,运用启发式搜索算法和遗传算法,对公路施工网络优化从时间、费用、资源三方面进行网络计划的优化和调整。     

浅析中国传统建筑的空间与造型

中国人自古以来过着修身养性的生活,人们依赖自然,亲和自然。中国传统建筑主张"天人合一"。基于与自然高度协同的中国文化精神,热爱自然、尊重自然,镶嵌在自然中,仿佛是大自然的一个有机组成。这不仅在中国各建筑类型中有明显的反映,在与自然高度协同的观念在园林中更有突出的表现。这种朴素的哲学思想影响着中国古典建筑室内外空间塑造。本文仅从古建筑的空间处理和建筑的造型两个方面分析一下中国传统建筑的可持续发展性。     

纸张复卷机的设计造型与仿真

本论文介绍了下引纸复卷机的方案,针对关键部件底辊进行了设计计算,用UG软件完成了整机三维造型,并结合3DSMAX实现了复卷过程的仿真。     

Estimated non-linearities and multiple equilibria in a model of distributive-demand cycles

We introduce the results of a non-parametric estimate of the US wage-Phillips Curve into a simplified version of the model of the wage-price spiral by Flaschel and Krolzig (2008). Making use of Okun’s law, the non-linearity in the wage inflation-employment relation translates into a non-linearity in the so-called ‘distributive curve’ of the economy. Exploiting the observed non-linearity in extending an otherwise standard demand-distribution model (Taylor 2004 Taylor, Lance. 2004. Reconstructing macroeconomics. structuralist proposals and critique of the mainstream, Cambridge, MA: Harvard University Press.  [Google Scholar]), we provide a dynamical analysis both in wage-led and profit-led effective demand regimes. In a profit-led scenario, shown to be the empirically relevant case for the US economy, there are two stable equilibria of Goodwin (1967 Goodwin, R.M. 1967. “A growth cycle”. In Socialism, capitalism and economic growth, Edited by: Feinstein, C.H. Cambridge, , UK: Cambridge University Press.  [Google Scholar]) growth cycle type, identified as a stable depression and a stable boom, and a saddle-path stable equilibrium in between them. Both stable steady states are surrounded by trajectories that cycle counterclockwise around their basins of attraction. The obtained type of growth fluctuations can be verified by a long phase cycle estimation for the US economy using a method developed by Kauermann, Teuber and Flaschel (2008 Kauermann, G., Teuber, T. and Flaschel, P. 2008. “Estimating loops and cycles using penalized splines”. Bielefeld: CEM working paper.  [Google Scholar]).     

Cost-effective compensation to avoid carbon emissions from forest loss: An approach to consider price-quantity effects and risk-aversion

Analyses were carried out on financial compensation to avoid loss of tropical forests and related carbon (C) emissions when marginal financial yield declined for land-use options with extended areas, and when a risk-averting perspective (modeled according to financial theory around the capital asset pricing model) is assumed. The approach in this study was to consider natural forest, forest plantation, pasture, and cropland simultaneously to investigate how an optimized land-use distribution may reduce the amount of compensation necessary to avoid C emissions from forest loss.The financial compensations derived were as high as US$ 176 per hectare per year when comparing natural forests only with the most profitable alternative (croplands). However, compensation decreased to US$ 124 for risk-neutral decision-makers, who would strive for optimized land-use allocation, and to only US$ 47 per hectare per year for risk-avoiders, who would look to maximize the reward-to-variability ratio. Sensitivity analyses indicated that the compensation under risk-aversion increased much less than under risk-ignoring when increased productivity of agricultural land-use or growing demand for agricultural products was simulated. It was concluded that considering appropriate diversification strategies and the well documented human behavior to avoid risks is an important step in developing cost-effective compensation policies.     

Reflections on discriminant validity: Reexamining the Bove et al. (2009) findings

Bove, Pervan, Beatty and Shiu (2009) develop and test a latent variable model of the role of service workers in encouraging helpful behaviors by customers towards the service business (OCBs). Farrell (2010) questions these findings due to an incorrect application of the Fornell and Larcker (1981) discriminant validity test. The authors respond to Farrell's criticism by discussing the options available for assessing discriminant validity, the current use of these options in top journals, the underlying assumptions of these assessments, and the appropriateness of the alternative assessments under different types of situations. Finally, the authors address the specific concerns raised in Farrell (2010) in regard to Bove et al. (2009).