美国德克萨斯州冲突法的变迁

在过去的几个世纪里，德克萨斯州的法律选择学说一直经历着翻天覆地的变化。自德州加入反对本地法运动开始，直至第二次重述的利益分析和最密切联系原则的出现为止，德州似乎一直在逃避着一致性而趋向灵活性。从根本上说，德州冲突法在美国两次冲突法革命的革新中，被赋予更多的政策因素，加上法律选择固有的含糊不清的性质，为德州法院留下了较多不稳定的法律选择因素，在帮助当事人预见法院的法律选择方面所发挥的作用更是日渐式微。因此，对德州冲突法演变的探讨，尤其针对其冲突法理论和方法的变迁方面的讨论，对于解决目前的理论困境，以及探寻未来的理论发展模式有着积极的推动作用。     

基于压缩感知的心电信号稀疏采样与重构算法

实时心电监测的数据量过大，给系统的传输和存储带来很大压力.为降低采集端的功耗，达到既减轻采样复杂度又降低传输数据量的目的，使用压缩感知技术对心电信号进行压缩采样及重构.以信号重构时间和重构误差为关键指标，研究不同重构算法和小波基的性能表现.结果表明，当压缩率在30%以内时，基追踪作为信号重构算法的百分比均方根差小于4%，同时其重构耗时最短;当压缩率在70%以内时，子空间追踪的误差小于10%，且始终保持较低的重构耗时.最优小波基往往和具体压缩率有关.     

Bounding the inefficiency of the C-logit stochastic user equilibrium assignment

Compared with standard logit-based stochastic user equilibrium assignment model, the C-logit model describes route choice behavior in a more realistic way by considering the overlapping effect between routes. This paper investigates the inefficiency upper bounds of this model against the deterministic system optimum and the C-logit stochastic system optimum in terms of the total network travel time. It is found that the commonality factor of overlapping routes significantly affects the inefficiency bound, besides link congestion degree, total demand and the number of feasible routes. If the commonality factor is not considered, the efficiency loss resulting from selfishly stochastic travel behavior will be to large extent underestimated.     

影响金钱松种子萌发因素研究

为了研究不同消毒时间、不同浸种时间和不同培养基配方对金钱松种子萌发的影响.金钱松种子采用75%酒精消毒30 s和0.1%升汞消毒15 min,用40℃无菌水浸泡12 h后,接种在不添加任何激素的MS培养基上,其种子的萌发率最高为64.5%,且幼苗生长也好.     

平煤四矿矿井通风阻力测定与系统分析

矿井通风系统阻力测定是煤矿安全生产和通风安全管理的重要内容,阻力的大小直接影响矿井通风的效果。为了了解平煤四矿矿井通风阻力的大小及其分布,优化矿井通风系统,选定主要测定路线,基于基点气压计法进行矿井阻力测定,并根据测定结果对矿井通风系统进行了分析。     

降温过程对Au24Cu19合金团簇结构变化影响

采用基于嵌入原子法的正则系综NVT分子动力学方法在原子尺度上计算了包含24个金原子和19个铜原子的Au24Cu19双金属团簇在急冷和连续降温过程中的结构演化.根据原子平均势能、主要原子键对数目以及原子堆积结构随温度的变化表明，随着温度的降低，团簇表现为铜原子在内，金原子和少量铜原子包覆在外的构型.在温度被降低到较高温度区间时，急冷降温过程中，键对数目呈高-低振荡变化；连续冷却过程中，键对数目则呈低-高振荡变化.在温度较低的区间，直至400K，这两个冷却条件下的键对数目表现为同步变化.     

Cobalt doped titanate nanotubes: Synthesis and properties

Cobalt oxide doped titanate nanotubes are synthesized with a simple hydrothermal treatment of mixed Co_3O_4 and TiO_2 powders. The formed tubular nanostructure, chemical composition,and the elemental distribution are analyzed using TEM, BET, FTIR, XRD, and XPS. The electrocatalytic activity towards oxygen evolution reactions and photodegradation against Rhodamine B are investigated. It has been found out that the oxygen evolutions starts at 0.8 V and reaches 0.98 mA ·cm~(–1) at 1.4 V vs. SCE. For photodegradation of Rhodamine B, the concentration decreased to 24% after 1 h irradiation using the sample with a mass percentage of 5% cobalt. The results demonstrate that the cobalt oxide doped titanate nanotubes are good candidates as electrocatalysts and photocatalytic materials.     

A Simple Linear Regression Approach to Modeling and Forecasting Mortality Rates

Observing that a sequence of negative logarithms of 1‐year survival probabilities displays a linear relationship with the sequence of corresponding terms with a time lag of a certain number of years, we propose a simple linear regression to model and forecast mortality rates. Our model assuming the linearity between two mortality sequences with a time lag each other does not need to formulate the time trends of mortality rates across ages for mortality prediction. Moreover, the parameters of our model for a given age depend on the mortality rates for that age only. Therefore, whether the span of the study ages with the age included is widened or shortened will not affect the results of mortality fitting and forecasting for that age. In the empirical testing, the regression results using the mortality data for the UK, USA and Japan show a satisfactory goodness of fit, which convinces us of the appropriateness of the linear assumption. Empirical illustrations further show that our model's performances of fitting and forecasting mortality rates are quite satisfactory compared with the existing well‐known mortality models. Copyright © 2015 John Wiley & Sons, Ltd.     

高速公路拼接技术及施工要点

道路拼接技术可以充分利用原路面结构,具有较好的经济性,在高速公路改扩建工程中得到广泛应用。本文从高速公路拼接方式和材料应用角度出发,重点对拼接技术中最为重要的层间粘结施工环节进行分析,并对基层、面层拼接的施工程序和技术要点进行了阐述。