快速核密度估计算法研究进展

作为当前最先进有效的密度估计算法,核密度估计（KDE）得到了广泛的研究。但是其二次的计算复杂度严重阻碍了KDE在具有海量高维数据的实际问题中的应用。为了排除算法计算性能上的障碍,研究者从不同角度提出了多种解决方案。在简要介绍KDE基本算法的基础上,简要分析了近年来提出的一些KDE的快速计算和逼近算法,以便为进一步的研究提供一定的支持与帮助。     

工业烟气脱硫脱硝新技术研究进展

依据大量文献,综述了近几年来从工业烟气中脱除有害气体SO_2和NO_(?)的新技术。着重论述了国外在高能电子束辐射技术和脉冲流光电晕放电技术方面的新进展。通过比较单位能耗的脱除率,指出了电晕放电技术的优越性。并概述了近几年来作者参与脉冲电晕放电脱硫脱硝的研究情况,提出了进一步研究此课题的建议。     

西门子AS在垃圾焚烧发电项目中的应用

垃圾焚烧发电技术在国内刚起步,其中发电部分的工艺及控制国内较为成熟,而焚烧技术大多来源于欧洲及日本等国。本文结合实际工程项目及调试经历,简述垃圾焚烧发电技术的主要工艺及电控系统。并着重描述垃圾焚烧炉及烟气处理的基于Siemens AS的网络结构及软硬件特点、编程风格。     

Fast Gauss Bilateral Filtering

In spite of high computational complexity, the bilateral filter and its modifications and extensions have recently become very popular image and shape processing tools. In this paper, we propose a fast and accurate approximation of the bilateral filter. Our approach combines a dimension elevation trick with a Fast Gauss Transform. First we represent the bilateral filter as a convolution in a high dimensional space. Then the convolution is efficiently approximated by using space partitioning and Gaussian function expansions. Advantages of our approach include linear computational complexity, user-specified precision, and an ability to process high dimensional and non-uniformly sampled data. We demonstrate capabilities of the approach by considering its applications to the image and volume denoising and high-dynamic-range tone mapping problems.     

基于减贫的资源型地区产业发展研究：以山西省为例

文章以山西省为例阐述了资源型地区现在面临的产业结构不合理,贫困程度依然严重的现状,在此基础上,以2007年山西社会核算矩阵为基础建立了固定价格的乘数模型,研究了不同产业发展对居民收入的影响,但居民收入的增长不一定会使贫困减少,因此,为进一步研究产业发展与减少居民贫困之间的关系,依据可以反映居民收入与贫困的FGT指数构建了对贫困度敏感性效应分解的乘数模型,计算出了居民的贫困发生率、贫困深度和贫困强度,从而得到了产业发展和贫困度之间的关系。模型结果表明：1）教育部门对居民的收入和减贫效应最大,其中教育部门对城镇居民收入的拉动作用要大于农村居民,但对于赤贫人口的减贫效应更加显著。2）卫生、社会保障和福利部门在同时考虑对经济影响和居民减贫时,作用更明显。教育部门和卫生、社会保障和福利部门符合优先政策支持和鼓励发展的产业标准,而按照三大产业的角度来看,山西应大力支持和发展第三产业。     

平面图形的性质及有限元网格的FGT生成方法

分析了ＦｒｏｎｔＧｅｎｅｒａｔｉｏｎＴｅｃｈｎｉｑｕｅ（以下简称ＦＧＴ）有限元网格生成方法［１］存在的问题,研究了平面区域的拓扑性质对此法网格生成有效性的影响,并提出加点法和区域分解法,进而对平面任意区域生成有限元网格的ＦＧＴ法进行改进。     

Design,modelling, and simulation of a floating gate transistor with a novel security feature

This study proposes a new generation of floating gate transistors (FGT) with a novel built-in security feature. The new device has applications in guarding the IC chips against the current reverse engineering techniques, including scanning capacitance microscopy (SCM). The SCM measures the change in the C–V characteristic of the device as a result of placing a minute amount of charge on the floating gate, even in nano-meter scales. The proposed design only adds a simple processing step to the conventional FGT by adding an oppositely doped implanted layer to the substrate. This new structure was first analyzed theoretically and then a two-dimensional model was extracted to represent its C–V characteristic. Furthermore, this model was verified with a simulation. In addition, the C–V characteristics relevant to the SCM measurement of both conventional and the new designed FGT were compared to discuss the effectiveness of the added layer in masking the state of the transistor. The effect of change in doping concentration of the implanted layer on the C–V characteristics was also investigated. Finally, the feasibility of the proposed design was examined by comparing its I–V characteristics with the traditional FGT.     

The correntropy MACE filter

The minimum average correlation energy (MACE) filter is well known for object recognition. This paper proposes a nonlinear extension to the MACE filter using the recently introduced correntropy function. Correntropy is a positive definite function that generalizes the concept of correlation by utilizing second and higher order moments of the signal statistics. Because of its positive definite nature, correntropy induces a new reproducing kernel Hilbert space (RKHS). Taking advantage of the linear structure of the RKHS it is possible to formulate the MACE filter equations in the RKHS induced by correntropy and obtained an approximate solution. Due to the nonlinear relation between the feature space and the input space, the correntropy MACE (CMACE) can potentially improve upon the MACE performance while preserving the shift-invariant property (additional computation for all shifts will be required in the CMACE). To alleviate the computation complexity of the solution, this paper also presents the fast CMACE using the fast Gauss transform (FGT). We apply the CMACE filter to the MSTAR public release synthetic aperture radar (SAR) data set as well as PIE database of human faces and show that the proposed method exhibits better distortion tolerance and outperforms the linear MACE in both generalization and rejection abilities.     

高炉炉顶煤气实际能量利用率及其技术应用展望

对高炉炉顶煤气作能质，Ｙｏｎｇ质（ｅｘｅｒｇｙ）分析，其温度Ｙｏｎｇ及压力Ｙｏｎｇ仅占其总Ｙｏｎｇ质的１％－３．２％，而其化学Ｙｏｎｇ占９７－９９％，提出开发高炉煤气燃气透平（ＦＧＴ）是我国大中小高炉煤气技术改造的方向；设置ＴＲＴ技术界限的条件和干湿型ＩＲＴ的条件，对传统绝热指数结论中存在的问题提出质疑。