配网无功补偿及补偿效益分析

根据我国实际配网情况，阐述了低压配网电容无功补偿在改善电能质量、降损节能，提高供电设备的供电能力及减少用户电费支出的作用和意义，并对无功补偿效益进行了分析。     

悬臂筛网振动筛在烧结成品整粒系统中的应用

莱钢烧结成品整粒系统的三次筛分和四次筛分，一直用直线振动筛。随着烧结矿产量的增加，原直线振动筛因其处理能力低、筛分效率低、运行成本高等已不能满足生产要求。悬臂筛网振动筛具有动态筛孔，且可使物料充分接触筛面，体积小、耗能低、筛粉效率高，经现场适应性改造代替了原直线振动筛。应用表明，筛分指数由8％降低到了6％，满足了生产工艺要求，年效益为1394万元。     

新型滑块在天钢带钢厂加热炉上的应用

针对原来加热炉水梁滑块结构、排列不合理造成的钢坯温度不均现象，改用新型孔洞式全热滑块。实践证明新型滑块设计合理、结构简单、施工方便、使用可靠，有效地提高了加热炉的热效率，减少了水梁黑印，改善了钢加热质量，明显的提高了带钢产量。     

对低压锅炉改造的探讨

本文针对贵溪冶炼厂 4 # 低压锅炉的现状 ,从技术、运行成本、改造费用等几个方面进行比较 ,提出了有针对性的改造方案。     

软件工程中“Philippe”现象的分析

根据基于知识工人劳动性质的管理学特征分析和人的作业效率解析两方面,对“Philippe”现象产生的重要原因进行了探讨,并根据科学管理的基本逻辑考察了软件工程发展的科学管理逻辑轨迹,指出以内在效率为重的人本管理理念必须与科学管理强调外在效率的逻辑(通过过程控制管理目标)相结合,才能从作业和管理效率两方面支持软件工程在不断克服“软件危机”的基础上健康、持续发展。     

Using lidar and effective LAI data to evaluate IKONOS and Landsat 7 ETM+ vegetation cover estimates in a ponderosa pine forest

Structural and functional analyses of ecosystems benefit when high accuracy vegetation coverages can be derived over large areas. In this study, we utilize IKONOS, Landsat 7 ETM+, and airborne scanning light detection and ranging (lidar) to quantify coniferous forest and understory grass coverages in a ponderosa pine (Pinus ponderosa) dominated ecosystem in the Black Hills of South Dakota. Linear spectral mixture analyses of IKONOS and ETM+ data were used to isolate spectral endmembers (bare soil, understory grass, and tree/shade) and calculate their subpixel fractional coverages. We then compared these endmember cover estimates to similar cover estimates derived from lidar data and field measures. The IKONOS-derived tree/shade fraction was significantly correlated with the field-measured canopy effective leaf area index (LAI_e) (r²=0.55, p<0.001) and with the lidar-derived estimate of tree occurrence (r²=0.79, p<0.001). The enhanced vegetation index (EVI) calculated from IKONOS imagery showed a negative correlation with the field measured tree canopy effective LAI and lidar tree cover response (r²=0.30, r=−0.55 and r²=0.41, r=−0.64, respectively; p<0.001) and further analyses indicate a strong linear relationship between EVI and the IKONOS-derived grass fraction (r²=0.99, p<0.001). We also found that using EVI resulted in better agreement with the subpixel vegetation fractions in this ecosystem than using normalized difference of vegetation index (NDVI). Coarsening the IKONOS data to 30 m resolution imagery revealed a stronger relationship with lidar tree measures (r²=0.77, p<0.001) than at 4 m resolution (r²=0.58, p<0.001). Unmixed tree/shade fractions derived from 30 m resolution ETM+ imagery also showed a significant correlation with the lidar data (r²=0.66, p<0.001). These results demonstrate the power of using high resolution lidar data to validate spectral unmixing results of satellite imagery, and indicate that IKONOS data and Landsat 7 ETM+ data both can serve to make the important distinction between tree/shade coverage and exposed understory grass coverage during peak summertime greenness in a ponderosa pine forest ecosystem.     

砂带磨削的发展及关键技术

介绍了发展砂带磨削技术的意义及砂带磨削技术的发展趋势,通过比较国内外砂带磨削技术的差距,提出了促进我国砂带磨削技术发展的关键技术,包括新型砂带研制、高端精密高效砂带磨床研制、砂带磨床标准制定等方面。     

遗传算法在结构损伤检测中的应用与改进

与遗传算法的其他应用领域相比，使用遗传算法进行损伤检测的成功更加依赖于搜索效率和在对同一类问题进行优化时搜索效率的变动程度。文中在建立表面粘贴有压电片材料的完好及损伤悬臂复合材料层合壳体有限元动力学模型的基础上，研究对遗传算法进行优化，以改善搜索效率和效率变动程度；并对遗传算法进行损伤检测时迭代次数的分布规律进行研究。     

用数理统计方法评估特种加工表面形貌

本文通过对特种加工零件表面粗糙度进行测量，将实测数据输入计算机，运用数理统计方法，分别求出每个零件的幅度密度函数、自相关函数和功率谱密度函数，并绘制出轮廓图和函数图，对这些函数与其图进行综合分析；评估特种加工表面的形貌。     

Optimizing imaging parameters for the separation of multiple labels in a fluorescence image

A theoretical analysis is presented on how to separate the contributions from individual, simultaneously present fluorophores in a spectrally resolved image. Equations are derived that allow the calculation of the signal‐to‐noise ratio of the estimates for such contributions, given the spectral information on the individual fluorophores, the excitation wavelengths and intensities, and the number and widths of the spectral detection channels. We then ask how such imaging parameters have to be chosen for optimal fluorophore separation. We optimize the signal‐to‐noise ratio or optimize a newly defined ‘figure of merit’, which is a measure of efficiency in the use of emitted photons. The influence of photobleaching on the resolution and on the choice of imaging parameters is discussed, as well as the additional resolution gained by including fluorescence lifetime information. A surprisingly small number of spectral channels are required for an almost optimal resolution, if the borders of these channels are optimally selected. The detailed consideration of photobleaching is found to be essential, whenever there is significant bleaching. Consideration of fluorescence lifetime information (in addition to spectral information) improves results, particularly when lifetimes differ by more than a factor of two.