两种煤泥锅炉的技术技术经济分析

以山东某热电厂采用的鼓泡床和循环床煤泥锅炉的运行实践，分析了两种煤泥发电技术的经济差别，特别是鼓泡炉的埋管经常磨损引起的巨大损失以及需要外购石英砂床料带来的巨大费用，表明采用无埋管循环流化床煤泥锅炉则可减少损失134．8万元／年。     

Implementation of AVS Jizhun decoder with HW/SW partitioning on a coarse-grained reconfigurable multimedia system

In this paper,a TPP(Task-based Parallelization and Pipelining)scheme is proposed to implement AVS(Audio Video coding Standard)video decoding algorithm on REMUS(REconfigurable MUltimedia System),which is a coarse-grained reconfigurable multimedia system.An AVS decoder has been implemented with the consideration of HW/SW optimized partitioning.Several parallel techniques,such as MB(Macro-Block)-based parallel and block-based parallel techniques,and several pipeline techniques,such as MB level pipeline and block level pipeline techniques are adopted by hardware implementation,for performance improvement of the AVS decoder.Also,most computation-intensive tasks in AVS video standards,such as MC(Motion Compensation),IP(Intra Prediction),IDCT(Inverse Discrete Cosine Transform),REC(REConstruct)and DF(Deblocking Filter),are performed in the two RPUs(Reconfigurable Processing Units),which are the major computing engines of REMUS.Owing to the proposed scheme,the decoder introduced here can support AVS JP(Jizhun Profile)1920×1088@39fps streams when exploiting a 200 MHz working frequency.     

基于NSCT域改进型NMF的图像融合方法

针对多传感器图像融合问题,提出一种基于非下采样轮廓波变换域改进型非负矩阵分解的图像融合方法.首先,采用非下采样轮廓波变换对源图像进行多尺度、多方向稀疏分解;然后对低频子图像采用改进型非负矩阵分解方法进行融合,该过程无需对W和H进行随机化便可快速生成低频融合图像,高频子图像则采用自适应unit-fast-linking脉冲耦合神经网络模型进行融合;最后利用非下采样轮廓波逆变换合成各子图像即可得到最终融合图像.仿真实验验证了该方法的有效性.     

Effect of electrochemical oxidation on carbon nanotube electrodes of electric double layer capacitors

Electrochemical oxidation of the carbon nanotube (CNT) polarizable electrodes of electric double layer capacitors (EDLCs) was studied. It indicated that electrochemical oxidation elevated the available surface area of the electrodes and introduced some kinds of functional group on the CNT surfaces. The specific capacitances of the polarizable electrodes with organic electrolyte could be enhanced from 22.4 F g-1 to 78.2 F g-1 after electrolysis oxidization. The enhancement of the specific capacitance depends on the extent of electrochemical oxidation. Using acidic electrolyte for electrochemical oxidation has different effects on modifying the performances of the CNT polarizable electrodes compared to using basic electrolyte.     

NiTi合金表面镍离子释放的电子结构理论计算

采用电荷自洽离散变分Xα方法，对NiTi合金表面生成TiO2氧化层时镍的释放行为进行了理论计算。选取TiO2的主要晶态金红石构型，通过构造合理的团簇模型，计算镍离子在金红石（110）和（100）表面扩散的可能性及其强度大小。对键级、电荷分布，以及态密度的计算结果进行分析显示，当NiTi合金表面形成金红石型TiO2表面膜时，由于镍原子与氧原子之问发生有效的共价成键作用，会抑制表面镍离子的溶出，即从理论上验证了在NiTi合金表面制备金红石型TiO2氧化膜将有利于提高其生物相容性。     

惠普软件携手亿阳信通共谱ITSM新篇章

随着中国在国际IT市场中的地位凸显,越来越多的国外厂商把目光投向了中国市场,他们通过建立销售渠道、寻找本地研发伙伴甚至建立本地研发中心等方式,将自己的产品和技术逐渐注入中国市场.但迄今为止,那些颇具研发实力和实施经验的中小型本土厂商在与国外厂商的合作当中,绝大多数还是仅限于扮演一个技术加工者的角色,核心的技术资源仍然掌握在国外厂商手中.如何才能触及新技术的核心,并随之走向国际市场,是中小型本土厂商长期以来的期盼.     

On the fuzzy-adaptive command filtered backstepping control of an underactuated autonomous underwater vehicle in the three-dimensional space

Journal of Mechanical Science and Technology - This paper studies the three-dimensional path following control problem for an underactuated autonomous underwater vehicle in the presence of...