生态型RPC材料的断裂力学行为研究

以质量分数为50%～60%的超细工业废渣取代水泥,以普通黄砂取代磨细石英砂,制备了2个系列不同配比的生态型RPC材料,并研究了纤维掺量及养护制度对其断裂力学性能的影响规律.结果显示,随着纤维掺量的增加,生态RPC的断裂能及断裂韧度不断提高;在标准养护条件下,生态RPC的延性指数在纤维体积率为2%时最大.随着养护温度的提高,生态RPC的极限断裂强度不断提高,但同时其脆性也在增加,从而表现出断裂能、断裂韧度和延性指数受养护制度影响的变化规律各不相同.     

Truth Discovery on Inconsistent Relational Data

In this era of big data, data are often collected from multiple sources that have different reliabilities, and there is inevitable conflict with respect to the various information obtained when it relates to the the same object.One important task is to identify the most trustworthy value out of all the conflicting claims, and this is known as truth discovery. Existing truth discovery methods simultaneously identify the most trustworthy information and source reliability degrees and are based on the idea that more reliable sources often provide more trustworthy information,and vice versa. However, there are often semantic constrains defined upon relational database, which can be violated by a single data source. To remove violations, an important task is to repair data to satisfy the constrains,and this is known as data cleaning. The two problems above may coexist, but considering them together can provide some benefits, and to the authors knowledge, this has not yet been the focus of any research. In this paper, therefore, a schema-decomposing based method is proposed to simultaneously discover the truth and to clean the data, with the aim of improving accuracy. Experimental results using real world data sets of notebooks and mobile phones, as well as simulated data sets, demonstrate the effectiveness and efficiency of our proposed method.     

论宁夏高校图书馆联盟的构建

资源联盟、服务联盟和知识联盟是宁夏高校图书馆联盟的建设愿景.阐述了构建宁夏高校图书馆联盟的策略,介绍了宁夏高校图书馆联盟的服务内容,探讨了构建宁夏高校图书馆联盟的意义.     

Velocity Modeling and Inversion Techniques for Locating Microseismic Events in Unconventional Reservoirs

A velocity model is an important factor influencing microseismic event locations. We re-view the velocity modeling and inversion techniques for locating microseismic events in exploration for unconvent...     

变截面超静定梁的传递矩阵解法

采用矩阵传递法分析了变截面超静定梁的弯曲问题。利用截面状态矢量的传递规律,求解任一截面的内力和变形。与其它方法比较,该方法提供的是程式化的数学模型,便于计算机分析。     

氟代次甲基自由基与臭氧反应机理的理论研究

为阐明氟代次甲基自由基(CF)与O3在二重态势能面上的微观反应机理,采用密度泛函理论在B3LYP/6-311G(d,p)水平上对该反应进行了详细理论研究。通过全参数优化反应物、中间体、过渡态及产物的几何构型,得到相应能量及频率值,并采用内禀反应坐标(IRC)计算方法在同一水平上确认了中间体和过渡态之间的联系。研究发现CF与O3反应有以下5种产物通道:P1(FCO+O2)、P2(FCO2+O)、P3(CO2+O+F)、P4(CO2+FO)和P5(CO+O2+F)。通过对反应路径上各驻点的能量分析得出P1(FCO+O2)为主要通道,其余均为次要通道,其产率依次减小。     

两种钛铌酸钾复合材料的制备及其光催化应用研究

高温固相法制备层状钛铌酸钾盐（K T iN bO5）。通过硝酸酸化、剥片处理等获得亚级钛铌酸钾纳米片。分别用二氧化钛和氢氧化铁溶胶对钛铌酸钾纳米片进行复合,获得两种钛铌酸钾纳米片为基质的复合纳米催化剂。最终分别考察了亚甲基蓝（M B ）在两种改性的钛铌酸钾纳米片表面上吸附和光催化效果。结果表明,两种钛铌酸钾纳米片为基质的复合材料在氙灯下对亚甲基蓝均具有良好地复合改性的光催化降解效果。     

Discussion on the new space of strategic development and function of Hengsha,Shanghai

Integrating various resource advantages including location, land, coastline and waterway, Heng- sha, Shanghai will be the new space of strategic development in the future （especially after 2020）. Inspired by marine economic development and continual establishment for new strategic space of coastal cities, in this pa- per we will take the strategic development direction of Hengsha new space into consideration when enlarging on the positioning of the new development space in Hengsha, which includes international logistic center （free har- bor and logistic transshipment center）, modem port industry, high-end services, tourism, leisure, and recre- ation and ecological village in downtown area.     

Jaulent-Miodek方程组的Riemann θ函数解

首先给定一类特殊的椭圆方程的Riemannθ函数解,进而通过此类特殊椭圆方程作为辅助方程,借助数学符号计算Mathematica软件,得出Jaulent-Miodek方程组的Riemannθ函数解.