新疆兵团道路运输业发展趋势分析

在对新疆生产建设兵团道路运输业现状分析的基础上,通过利用一元线性回归模型、平均增长率法以及灰色预测法三种方法分别对兵团2011～2015年的道路旅客运输量、道路货物运输量、道路旅客运输周转量、道路货物运输周转量等进行预测。结果显示,在未来5年当中道路旅客运输以年均7.7%增长,道路货物运输以年均9.2%增长,道路旅客周转量以年均10.6%增长,道路运输货物周转量以年均12.6%增长。     

兰州市五人制足球运动开展现状调查分析

本文运用文献资料法、专家访谈法、问卷调查法、数理统计法对兰州市五人制足球运动的开展规模、教练员情况、场地设施、社会参与人群状况等问题进行调查分析,提出了针对性建议,旨在为进一步推动兰州市五人制足球的健康快速发展,同时促进兰州市足球运动的普及与提高尽一份力。     

中频电源逆变换相失败保护的研究

分析了并联逆变型晶闸管中频电源产生换相失败的原因,提出老换相失败保护新措施,经过实验和实践结果表明,新措施对各种原因产生的换相失败均有保护作用,且简单实用、效果良好。     

车用汽油发动机动力性与机械损失功率的快速检测

本文阐述了无外载惯量加速测功原理，指出了国内现有同类仪器存在的问题。提出了采用油门定开度、多次自由加、减速测量在用汽车发动机动力性与机械损失功率的方法，从而提高测量精度，获得重复性的测试结果。     

体外配置CFRP预应力筋混凝土箱梁受力性能试验研究

制作了体外配置碳纤维(CFRP)筋预应力混凝土薄壁箱梁模型,对模型箱梁从CFRP预应力筋张拉、加载至混凝土开裂这一过程进行了试验研究,研究了预应力损失和均布荷载作用下箱梁跨中截面应力-应变分布规律、受压翼缘有效分布宽度系数、跨中挠度、抗裂性能以及CFRP体外预应力筋的应力变化情况,试验表明该箱梁具有良好的抗裂性能与变形性能,混凝土开裂引起顶板受压翼缘有效分布宽度系数增加小于5%。该研究为CFRP体外预应力筋在混凝土薄壁箱梁中的推广应用提供了可靠的试验依据。     

车用电涡流缓速器试验方法的探讨

在分析比较国外相关的辅助制动法规和研究车用电涡流缓速器基本性能要求的基础上，探讨了车用电涡流缓速器的台架试验方法，研制了电涡流缓速器试验台。介绍了所研制试验台的工作原理，提出了试验方法和试验步骤。该试验方法的提出为国内制定电涡流缓速器相关标准提供了一定的理论依据。     

Stability assessment for intact ships in the light of model experiments

A systematic method for assessing intact ship stability with a free-running model in a seakeeping and maneuvering basin is proposed in this paper. Model experiments were carried out in extremely steep regular waves for a model drifting, running in head seas, and quartering seas. This method was applied to two purse seiners, and efficiently identified thresholds in metacentric heights for capsizing of these ships. These capsizing thresholds are compared with requirements of the IMO Code on Intact Stability. This series of model experiments also confirms that capsizing at the threshold occurs only in quartering seas, and shows that capsizing is caused by broaching, loss of stability on a wave crest, or bow diving. Received for publication on Jan. 20, 1999; accepted on July 6, 1999     

船闸引航道异重流淤积分析计算

根据异重流运动的特点,从水体重率沿程变化的机理出发,运用能量原理,推导出异重流淤积计算公式,并用于大源渡船闸引航道淤积计算。所得成果与已有3种公式计算结果的平均值相当,通过类比分析,所得淤积量分布与实测资料一致。     

Estimating economic losses of industry clusters due to port disruptions

Seaport operations are highly important for industries which rely heavily on imports and exports. A reliable evaluation of port risks is essential to govern the normal running of seaborne transportation and thus the industrial economies. The occurrence of a breakdown in the trade facilitators, such as ports, will disrupt the smooth flow of supply chains for the industries. The estimation of the economic loss for an industry when a port gets disrupted is a challenging task as the relationship between the port and industry clusters is complex. This study aims to develop a systematic framework for performing economic loss estimation of industry clusters due to port disruptions. The whole risk assessment is split into three stages focusing on the establishment of a network flow model, economic estimations and evaluating risk mitigation strategies. The proposed idea is demonstrated by a case study on Shenzhen port and its related manufacturing industries. A dynamic inventory control strategy used by manufacturers is found to be beneficial for mitigating port disruption risks.