Local spatial properties based image interpolation scheme using SVMs

Image interpolation plays an important role in image process applications. A novel support vector machines （SVMs） based interpolation scheme is proposed with increasing the local spatial properties in the source image as SVMs input patterns. After the proper neighbor pixels region is selected, trained support vectors are obtained by training SVMs with local spatial properties that include the average of the neighbor pixels gray values and the gray value variations between neighbor pixels in the selected region. The support vector regression machines are employed to estimate the gray values of unknown pixels with the neighbor pixels and local spatial properties information. Some interpolation experiments show that the proposed scheme is superior to the linear, cubic, neural network and other SVMs based interpolation approaches.     

两类非线性动态模型的研究

文献[1]讨论了一类双随机动态模型,本文对带有折扣的双随机动态模型进行了研究,并且在具有损失值的情况下,给出了DLM的计算公式。另外,对另一类非线性动态模型,给出了它的预测分布。     

气波增压器进气压力的波动对转子流场的影响

介绍了柴油机排气压力的测量方法,计算分析了气波增压器进气即柴油机排出的高压燃气的压力波动对增压器转子流场的影响。探讨了高压燃气平均压力和脉劝度与高压燃气进入转子的深度及扫气角度之间的关系,经回归分析得出三者间的相关方程。推导了平均压力和脉劝度的允许范围,为最大限度地利用高压燃气的能量指明了途径。     

随机解释变量回归模型的参数估计

本文研究解释变量含有随机误差的多元回归模型,提出了一种参数估计方法和相应的算法,同时分析了预测误差,给出了算例。     

毛巾织物毛圈固结力影响因素的研究

在毛巾织物的机械物理性能中,毛圈的固结性能是比较重要的,也是比较实用的。本文通过自己改装的仪器,对毛巾试样(同一组织、同一原料但不同规格)的毛圈固结特性进行测试分析,提出了毛巾织物结构参数对毛圈固结力影响的多元回归方程,结果表明:①依靠电子计算机技术,用主成分分析及回归方法能够较好地求得毛圈固结力与多个结构参数的数学模型;②固结力的测试方法是正确的,在对固结力的影响因素中,经纬纱密度;地经纱和纬纱的捻系数是主要的因素。如果经纬炒的密度、捻系数等确定后,可通过计算得到它们对毛圈固结力的贡献;③在设计毛巾织物时,可根据得到数学模型,综合考虑固结力与其它性能,确定最合适的结构参数。     

Pause or No Pause?——Prosodic Phrase Boundaries Revisited

This study presents evidence from analyses of the acoustic parameters of fluent continuous speech to show that within-paragraph prosodic phrase boundaries are related more to contrasts of neighborhood prosodic states rather than between-phrase pause durations; prosodic states receive more constraints from higher level discourse information.By revising a modular acoustic model by Tseng's hier-archical prosodic phrase grouping framework and examining the much varied prosodic phrase (PPh) boundary B3 within speech paragraph,we show that statistical accounts of layered contributions reveal dis-tinct contrasts between boundary immediate duration and intensity patterns irrespective of pause duration.Contrasts of F0 contour patterns were also observed in these locations.Evidence was also obtained to illus-trate how PPh boundary states are specified more by higher level discourse information than by lower level prosodic word construction.These combined results suggest that contrastive neighboring prosodic states are more significant cues to PPh boundaries than boundary pause duration.The results also help explain why in fluent speech between-phrase pause durations vary greatly,and can be applied to automatic speech segmentation.     

Pause or No Pause？--Prosodic Phrase Boundaries Revisited

This study presents evidence from analyses of the acoustic parameters of fluent continuous speech to show that within-paragraph prosodic phrase boundaries are related more to contrasts of neighborhood prosodic states rather than between-phrase pause durations; prosodic states receive more constraints from higher level discourse information. By revising a modular acoustic model by Tseng＇s hierarchical prosodic phrase grouping framework and examining the much varied prosodic phrase （PPh） boundary B3 within speech paragraph, we show that statistical accounts of layered contributions reveal distinct contrasts between boundary immediate duration and intensity patterns irrespective of pause duration. Contrasts of FO contour patterns were also observed in these locations. Evidence was also obtained to illustrate how PPh boundary states are specified more by higher level discourse information than by lower level prosodic word construction. These combined results suggest that contrastive neighboring prosodic states are more significant cues to PPh boundaries than boundary pause duration. The results also help explain why in fluent speech between-phrase pause durations vary greatly, and can be applied to automatic speech segmentation.     

柔性路面中层弯拉应力简式计算

在分析了三层连续体中层弯拉应力的解析解和常见路面结构层厚模量范围的基础上，建立了三层连续体系中弯拉应力显示计算，合理选用分段回归技术，成功地求得了常见路面结构弯拉应力的回归公式；精度分析表明，回归公式精度明显优于现行的查图法，与解析解相比误差也很小。     

用Cp统计量选择多元线性模型及估计形式

本文根据风险函数,提出了一个多变量场合的Cp统计量作为风险的估计,按Cp最小的原则给出了一种选择多元线性模型及估计形式的方法,重点讨论多变量正交试验的情况。     

黑液除硅的模型试验

根据三因子二次回归正交设计试验,建立了草浆黑液的除硅模型,使用所筛选的除硅剂处理黑液,验证了模型,得到有用结论。