厦门市停车换乘系统功能与布局探析

根据国内外相关城市的实施经验,停车换乘系统(park and ride system,简称p&r系统)是引导小汽车合理使用、缓解中心城区拥堵的一个有效手段之一,特别是与大运量公交系统的换乘衔接,使得停车换乘系统成为多模式一体化交通的重要组成部分.厦门正处于岛内外一体化及厦漳泉都市区同城化发展的关键时期,停车换乘系统将作为一体化交通系统的组成部分得到发展,并作为需求管理对策在中心城区拥堵治理中发挥一定作用.本文重点研究了厦门停车换乘系统建设的必要性与初步方案,可有效指导停车换乘系统详细方案的制定.     

大型塔式起重机安全事故的成因及对策

为了提高当前我国起重设备安全的安全监督与管理水平,对比分析了近7年来我国特种设备安全事故发生情况,分析得出特种设备安全事故的整体发展趋势以及起重机械成因研究的必要性。以建筑、港口、电力和造船等行业中大型塔式起重设备为研究对象,收集归类历年来发生的66例塔式起重机重大安全事故,以ARCTM理论为指导全面分析各类典型事故的成因,并给出了针对性的防范措施,为塔式起重特种设备的安全监督、管理存在的不足指明了改进方向和具体改善方法。     

The House Mouse (Mus musculus L.) Exerts Strong Differential Grain Consumption Preferences among Hard Red and White Spring Wheat (Triticum aestivum L.) Varieties in a Single‐Elimination Tournament Design

Wheat (Triticum aestivum L.) plays a central role in the health and nutrition of humans. Yet, little is known about possible flavor differences among different varieties. We have developed a model system using the house mouse (Mus musculus L.) to determine feeding preferences as a prelude to extending results to human sensory analysis. Here, we examine the application of a single‐elimination tournament design to the analysis of consumption preferences of a set of hard red and hard white spring wheat varieties. A single‐elimination tournament design in this case pairs 2 wheat varieties and only 1 of the 2 is advanced to further tests. Preferred varieties were advanced until an overall “winner” was identified; conversely, less desirable varieties were advanced such that an overall “loser” was identified. Hollis and IDO702 were the winner and loser, respectively, for the hard red varieties, and Clear White 515 and WA8123 were the winner and loser, respectively, for the hard white varieties. When using the more powerful protocol of 14 mice and a 4?d trial, differences in mean daily consumption preferences of 2 varieties were separated at P‐values as small as 2 × 10^?8. The single‐elimination tournament design is an efficient means of identifying the most and least desirable varieties among a larger set of samples. One application for identifying the 2 extremes in preference within a group of varieties would be to use them as parents of a population to identify quantitative trait loci for preference.     

心理学研究中国化的必要性阐释

本从心理学自身发展的需要、提高中国人心理素质所必须和中国化资源与中国心理学家的优势等方面对心理研究中国化的必要性进行了阐释。     

Experimental tests of a small‐scale microturbine with a liquid desiccant cooling system

In a trigeneration plant, the thermal energy recovered from the prime mover is exploited to produce a cooling effect. Although this possibility allows the working hours of the plant to be extended over the heating period, providing summer air conditioning through thermally activated technologies, it is rather difficult to find in the literature experimental data on trigeneration plants operation, and the availability of performance characteristics at off‐design conditions is anyway limited. The paper has the aim of showing the experimental data of a real trigeneration system installed at the Politecnico di Torino (Turin, Italy), composed of a natural gas 100 kW_el microturbine coupled to a liquid desiccant system. The data are presented for both cogeneration and trigeneration configurations, and for full and partial load operations. An energetic and economic performance assessment at rated power operation is presented, and compared with the partial load operation strategy. The primary energy savings are calculated through a widely accepted methodology, proposed by the European Union, and through another methodology, reported in literature, which seems to the Authors more suitable to describe the energetic performances of trigeneration plants. Copyright © 2012 John Wiley & Sons, Ltd.     

Blood flow interpretation in femoral pseudoaneurysm

A femoral artery pseudoaneurysm is one complication of vascular intervention, and the incidence is increasing. Early management is then needed to avoid potential dangers from it. It differs from a true aneurysm in that it doesn＇t include any component of the vascular wall, and is not studied as much as a true aneurysm. Here, a model of a femoral pseudoaneurysm was made and a Computational Fluid Dynamics（CFD） simulation was verified with PIV experiment. Afterwards, a CFD simulation with two different models was performed to look for any findings which may help in developing new treatment methods.     

仿生表面的离心风机叶轮抗冲蚀性能研究

目的 针对传统方法对提高离心风机叶轮抗冲蚀性能效果不显著的问题,从仿生学角度出发,对基于沙漠红柳优异抗冲蚀机理的仿生离心风机叶轮抗冲蚀性能进行了研究.方法 对沙漠红柳、垂柳树皮进行顺纹拉伸和冲蚀试验,定性定量分析沙漠红柳抗冲蚀磨损性能.基于对沙漠红柳树干、树枝体表形态表征测试,建立仿生表面模型,并利用Fluent对其进行数值模拟,比较分析不同仿生表面模型的冲蚀磨损性能及机理.参照ASTM-G76-83标准,设计制造离心风机冲蚀磨损试验装置.并基于有限元仿真结果和风机叶轮冲蚀性能的可视化研究,优化并制造离心风机仿生叶轮,对其进行冲蚀试验,评价分析各试验因素对叶轮冲蚀性能的影响.结果 沙漠红柳树皮弹性模量(509.17 MPa)大于垂柳树皮弹性模量(313.19 MPa),沙漠红柳冲蚀磨损量最大值(21.6 mg)小于垂柳冲蚀磨损量的最小值(24.1 mg),表明沙漠红柳具有较优的抗冲蚀性能.进一步观测沙漠红柳树皮形貌,发现其体表分布有大量的凹槽和凸包等特殊形态,通过模拟发现,这些特殊形态相较于光滑表面,可有效降低粒子对表面的冲蚀磨损量.基于对样件的冲蚀试验发现,影响叶轮冲蚀性能的主次因素依次为:单元形态、间距、特征尺寸.最优样件组合为:V形槽、间距2 mm、特征尺寸4 mm.结论 沙漠红柳树皮具有优异的抗冲蚀性能,这与其体表特殊形态紧密相关.基于沙漠红柳体表特殊形态设计的仿生离心风机叶轮较光滑叶轮,具有优异的抗冲蚀性能,经测试发现,最优组合样件的抗冲蚀性能较传统的光滑件提高了28.97％.     

奥希替尼获得性耐药的研究进展

奥希替尼作为第三代表皮生长因子受体酪氨酸激酶抑制剂,对表皮生长因子受体（EGFR）T790M突变型肺腺癌有显著疗效。随着临床研究的深入,奥希替尼的耐药逐渐出现。如何应对奥希替尼耐药已成为临床工作者必须关注的问题。本文就奥希替尼获得性耐药机制及应对措施的最新研究进展进行综述。     

基于正交试验的细菌觅食算法的全局最优化

细菌觅食算法在求解全局最优化问题时的性能大部分依赖于参数的设置,各参数的值不同,则细菌觅食算法的收敛速度和得到的最优解也不同。本文主要介绍了用正交试验的方法设置细菌觅食算法的参数来求解全局最优化的问题,通过正交试验方法来检测多组参数对细菌觅食算法效率的影响,用经典的测试函数数对这种组合方案进行检测对比,通过对实验结果数据分析可得出参数的最佳组合方案。最终实验结果表明用正交试验法设置的细菌觅食算法的参数组合方案可以提高算法的效率和收敛速度,使算法能够更快更好的得到测试函数的近似最优解。     

工业运输电动车往返自动控制系统设计

本文介绍继电控制系统在工业运输电动车中综合应用的基本工作原理,通过继电控制系统控制电动机供电线路,实现电机正转、反转、停机,从而达到了电动车正向、反向运行和随时停车的目的。该系统设计简单,适合控制往返重复运动的工业运输电动车,并且能降低工业生产成本,有效提高生产效率。