Testing Ten Theories

Using the most comprehensive data set now available, this investigation tests the precision of all exchange theories that now contend. Beyond precision, the investigation focuses on broad issues of effectiveness including consistency, parsimony, and whether the theories can be applied to structures larger than normally studied in the lab. Seeking greater parsimony, this investigation introduces a new model by combining parts of two contending theories. We find that all ten theories have scientific merit for all can predict with some effectiveness for the exchange structures experimentally investigated. Nevertheless, the ten vary in precision. Elementary Theory is the most precise. The new Expected-value Resistance model ranks second in precision and is the simplest. Both apply to large networks as well as the best of the other theories.     

Corrigendum To: Goldie Extending Modules

This corrigendum is written to correct the proof of Theorem 5.3 of Akalan et al. [1 Akalan , E. , Birkenmeier , G. F. , Tercan , A. ( 2009 ). Goldie extending modules . Comm. Algebra 37 : 663 – 683 .[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]].     

An effective indicator for evaluation of wavelength extending InGaAs photodetector technologies

An effective indicator for the evaluation of wavelength extending InGaAs photodetector and focal plane array technologies is demonstrated. The validity of the indicator has been confirmed using data from different categories including our works. Based on a formula with two meaningful parameters, the indicator could be a practical index for system designers to estimate the performance of wavelength extending InGaAs PDs and FPAs based on the same technology; and a useful criterion for device developers to improve their technology.     

一种基于脉冲噪声的新型迭代滤波算法

在局部极值噪声检测和迭代中值滤波的基础上,基于图像结构和脉冲噪声的特征分析,有效结合局部极值检测和幅度差阈值、梯度差阈值的检测方法,提出了一种基于噪声检测的迭代脉冲噪声滤除算法.并通过仿真实验和算法评价,验证了该算法不仅能够达到很好的去噪效果,而且在保留图像细节信息方面也取得了一定的成效.     

Diversity-oriented one-pot synthesis of furan based densely substituted biheteroaryls via isocyanide insertion

A facile and efficient acid-catalyzed cascade reaction for the synthesis of novel biheteroaryl structural motifs containing densely functionalized furans has been developed. The reaction sequence involves a Knoevenagel condensation of arylglyoxals with aroyl or heteroaroylacetonitrile and subsequently an isocyanide insertion via formal [4+1] cycloaddition followed by rapid [1,3]-H shift to afford uniquely decorated novel biheterocycles. Furthermore, the scope of the methodology was extended to diverse biheteroaryls by employing 3-(2-furyl)-3-oxopropanenitrile, 3-cyanoacetyl-1-methylindole, 3-oxo-3-(1H-pyrrol-2-yl)propanenitrile, 3-(1H-indol-3-yl)-3-oxopropanenitrile, 3-Oxo-3-(2-thienyl)propionitrile and benzoylacetonitriles.     

近年来我国商业银行范围经济及其影响因素研究

关于我国商业银行范围经济的研究文献中,所得结论不完全相同,而且也没有进一步研究银行范围经济的影响因素。本文通过对我国16家上市商业银行2007-2012年的范围经济进行分析,发现在所研究期间,我国的上市商业银行普遍存在成本、利润和收入范围经济,但平均来看,成本范围经济最小。在上市银行范围经济的影响因素中,银行规模、经营范围、经营管理水平、产品或服务种类等都有较显著的影响,银行规模与经营范围的对成本范围经济的影响方向不完全相同,经营管理水平对范围经济有正的影响,在产品和服务种类中,投资银行业务对范围经济有显著的影响,而保险业和租赁没有显著的影响。另外,银行的平均利息收入和平均利息支出对范围经济没有显著的影响。     

一个可考虑结构性影响的土体本构模型

以往的土体材料本构模型基本上没有考虑结构性这一最为根本的内在因素的影响。在回顾与评价剑桥模型的基础上，基于经典塑性理论，提出了一个可考虑结构性影响的土体本构模型，分析验证了这一模型的合理性，指出了模型的适用条件。     

Synthesis of 4-azo-butenolides

An efficient, catalyst-free, microwave-assisted approach has been developed for the synthesis of 4-azo-butyenolides derivatives by condensing tetronic acid with various anilines. This approach exhibited good functional group compatibility and produced the desired products in good to excellent yields in just 30–40?min. This approach can be seen as a better alternative to protocols with long reaction times used for the synthesis of these compounds, which are synthons for the obtaining of quinolines.     

基于QKD系统的扩展量子密钥方法研究

研究用交织技术和插值技术来扩展已有量子密钥库的容量,以期提高量子保密通信系统的量子密钥生成速率.初步仿真结果显示:采用交织技术和插值技术能扩展随机序列,且其随机性能不变.