氧化还原法制备SnO2纳米棒的研究

在聚氧乙烯五醚(NP5)、聚氧乙烯九醚(NP9)和环己烷组成的微乳体系中用氧化还原法制备SnO2前驱物,然后在熔盐中再经800℃、860℃焙烧2.5h,成功地制备了金红石结构的SnO2纳米棒,并用透射电子显微镜,X射线衍射对SnO2纳米棒的结构进行了表征.     

鞍钢高炉喷吹煤粉合理配煤的试验研究

实验室研究及工业试验结果表明，高炉喷吹烟煤和无烟煤的混合煤的综合效果优于喷吹单一烟煤或无烟煤，研究结果还表明，在鞍钢生产条件下，对于１０００ｍ＾３级高炉，当煤比为１００ｋｇ／ｔ左右、不富氧或低富氧率时，混合煤的挥发分含量宜控制在１８％左右，当煤比进一步提高后，混合煤的挥发分含量应适当提高。     

气敏传感器线性化电路的设计

报导了一种利用乘方电路实现气敏传感器非线性特性的线性化补偿的原理，电路及其实验结果，该电路具有测量范围宽，线性精度较高等特点。     

抑制气敏元件零点漂移的实用电路

一种利用闭环控制电路抑制气敏元件零点漂移的设计思想、原理框图及实验结果。该电路适用于起始阻值漂移，而灵敏度基本不变的气敏元件，可大大提高此类元件的稳定性与准确性。     

鞍钢高炉喷吹煤粉合理配煤的试验研究

介绍了国家“八五”重点攻关课题“氧煤强化炼新工艺研究”中高炉吹烟煤、无工混配煤的实验室研究及工业试验室研究应用情况,探讨了高炉喷吹煤粉的合理配煤结构。在鞍钢生产条件下,对于喷煤量１００ｋｇ／ｔ铁以下,不富氧成低富氧的１０００ｍ＾３级高炉,所喷混煤的挥发分控制在１８％左右比较合适。     

The Contributions of Climate Changes and Human Activities to Long-Term Variations in Lake Sediments Based on Results from Generalized Additive Models

Water Resources Management - Climate changes and human activities can influence lake sediments, which may lead to disruptions in aquatic environments. A better understanding of these effects is...     

Galerkin Methods for Stationary Radiative Transfer Equations with Uncertain Coefficients

In this paper we study the stationary radiative transfer equation with random coefficients. Galerkin methods are applied, which use orthogonal polynomials associated with the probability distribution of the random variables as basis functions in the random space. Such algorithms have been widely used for kinetic equations with random inputs, however, the corresponding numerical analysis is rare. In this paper we establish regularity theorems describing the smoothness properties of the solution, and investigate the convergence rate of N-term truncated polynomials under the spectral method framework. Numerical tests are conducted to demonstrate our analytical results.     

The large deviation results for the nonlinear regression model with dependent errors

In this paper, we investigate the least squares (LS) estimator of the nonlinear regression model based on the extended negatively dependent errors which are widely dependent structures. Under the general conditions, we establish some large deviation results for the LS estimator of the nonlinear regression parameter, which can be applied to obtain a weak uniform consistency and a complete convergence rate for this estimator. In addition, some examples and simulations are presented for illustration.     

认知网络中的能量回收技术：性能分析及优化设计

通信网络中有限的能源和频带资源限制了网络容量的进一步提升.对能量回收技术在认知网络中的应用进行研究,量化评估用户可回收的能量以及可达吞吐率,并进行优化设计很有必要.在所分析的系统中,当授权用户进行通信时,非授权用户可回收无线信号中所带有的能量,并利用回收的能量进行频谱检测;当检测到授权用户空闲时,非授权用户将接入频谱,利用回收到的能量进行数据传输.采用马尔科夫链模型对通信场景进行描述分析,发现授权用户的活跃程度对非授权用户可回收的能量、获得的传输机会带来影响,进而决定了非授权用户的可达吞吐量.在此基础上,提出一种通过控制授权用户业务量,以最大化网络能量效用和频谱效用的优化方案,并通过仿真证实了理论分析的正确性.