基于动态冲击试验的通勤类飞机座椅符合性验证技术

国产某型民用通勤类飞机为了取得欧洲航空安全局(EASA)型号合格证,机上座椅需进行设计更改并补充进行应急着陆情况下的动态要求符合性验证.通过对适航条款及相应标准的解读,研究了基于动态试验的航空座椅动态要求适航验证技术,其主要包括座椅动态性能基本要求、试验构型及工况筛选、试验规划、合格判据和试验结果分析等内容.结果表明,该型机旅客座椅满足适航规章对座椅的动态性能要求.该项旅客座椅动态性能试验的成功为型号取得EASA型号合格证奠定了良好的基础,该型飞机也即将成为第一个取得欧洲型号合格证的国产飞机.     

水泥土搅拌桩复合地基承载力的灰色预测

详细阐述灰色模型的建立及调整过程,利用复合地基沉降实测数据,根据灰色系统理论,建立(1,1)模型,可模拟复合地基的P~s曲线,预测地基沉降的发展趋势,分析水泥土搅拌桩复合地基的承载性能。     

矿区铁路钢筋混凝土桥梁裂缝成因及整治

平顶山矿区铁路线上有几十座钢筋混凝土桥梁，在使用过程中由于多种原因产生了各种裂缝，通过不同整治方法处理后，延长了桥梁的使用寿命，提高了桥梁的承载力。     

河流风景区生态旅游环境承载力指标体系研究---以漓江为例

本文给出了生态旅游环境承载力的定义并揭示了其内涵．在深入研究河流风景区的生态旅游环境承载力的特点上，构建了河流风景区的生态旅游环境承载力的指标体系。并以漓江为例进行分析，提出了优化漓江生态旅游环境承载力的措施。     

矩形钢管混凝土短柱轴心受压性能研究

该文对8根不同参数的矩形钢管混凝土短柱进行了轴心受压试验，对试件的破坏形态进行了分析，提出了一个基于线性莫尔强度准则的轴心受压矩形钢管混凝土短柱的极限承载力计算公式，并用其他文献的试验成果进行了验算，计算结果与实验数据吻合良好，可为工程设计提供参考．     

风险承担、风险缓冲与管理理念——关于信托公司风险管理的思考

由于信托制度的独特设计,信托公司或直接或间接均要承担信托财产损失风险,从近期来看,信托公司应构建以资本金为核心的风险缓冲机制。从长期来看,引入业绩评价基准,进行相对业绩评价是信托公司风险缓冲的必然选择。信托公司在风险管理时应树立两个理念,一是要将风险管理列为企业管理活动的核心,二是要认识到风险管理是一项长期性的工作,不能寄希望“毕其功于一役”。     

芯钢管混凝土节点的芯管壁厚与节点承载力关系的数值分析

对一种已经通过试验研究的钢管混凝土结构的新型节点进行数值分析。这种节点将钢管混凝土柱的钢管在节点区间断,在节点区设置芯钢管,使梁中的纵筋在节点中直通、梁与节点区混凝土成为一体可靠的传递梁中的弯矩、剪力及轴力。本文利用数值分析弥补模型试验数量少的缺陷。选择不同芯钢管壁厚的节点模型进行非线性有限元分析,得出芯钢管壁厚对节点承载力的影响规律。分析结果表明芯钢管壁厚是影响节点承载力的主要因素之一。     

Cross‐Border Auction Cycle Effects of Sovereign Bond Issuance in the Euro Area

We provide evidence for the euro area of spillovers from foreign public debt auctions into domestic secondary‐market auction cycles. We also confirm existing evidence of such spillovers from domestic issues into the domestic secondary market. Consistent with a theory of primary dealers’ limited risk‐bearing capacity, we find that auction cycles from domestic issues are stronger during the recent crisis period, whereas cross‐border effects are stronger in the precrisis period, but this evidence is not strong. This finding likely reflects the opposing effects of reduced sovereign bond market integration during the crisis and higher yield covariances caused by more market volatility.     

A division of the capitalist class and the market for money capital

In a one‐commodity economy populated by capitalists equipped with equal endowment but with heterogeneous linear production technology, a division of the capitalist class emerges endogenously. The capitalists with relatively weak technology, yielding the profit rate lower than the interest rate, become a money capitalist (lender), whereas the capitalists with relatively strong technology, yielding the profit rate greater than the interest rate, become an industrial capitalist (borrower). The equilibrium interest rate is derived by the associated demand and supply relation. From this setup of the model follow two essential relationships Marx establishes between the average profit rate and the interest rate: (a) that the profit (rate) sets a maximum limit of interest (rate), and (b) that the two rates are correlated in the long‐run. Lastly, the profit rate of financial sector is less than that of industrial sector due to the basic setup of the model where the industrial sector uses leverage to amplify the underlying capital profit rate, whereas the financial sector lacks intermediation technology, which would have enabled it to borrow profitably.     

豫剧名人艺术风韵

戏曲表演程式的一招一式不仅具有线条美和节奏美,而且它是有思想的、有感情的、也是有生命的。许多艺术界前辈运用了丰富多彩的表演手段,塑造了优美生动的舞台形象,取得了精湛高超的艺术造诣。