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。     

非参数回归的CV NN中位数估计的相合性

考虑非参数回归模型Y_i=g(x_i)+e_i,其中g(x)是待估的连续函数,x_i是非随机的,e_i是i.i.d.随机误差。笔者讨论最近邻中位数估计g_(n,h)(x_i)=m(Y_i(1),…,Y_i(h))=Y_i(1),…,Y_i(h)的中位数,其中h利用平均平方误差意义下的cross-validation方法选择。在一定条件下,建立了cross-validation最近邻中位数估计的相合性。     

河口乡耕地撂荒的特征与影响因素

基于农户调查数据，借助SPSS19.0软件，利用二元logistics回归分析了河口乡耕地撂荒的特征与影响因素.结果表明，河口乡耕地撂荒普遍存在，2015年耕地撂荒率为21%，2017年为27.1%，耕地撂荒时空变化明显，撂荒面积总体呈上升趋势；影响耕地撂荒的主要因素为水利灌溉条件、地块数量、务农人口数量、耕地质量、惠农政策满意度和地块到公路距离.根据研究结果，针对如何减少耕地撂荒、促进山区耕地资源可持续利用提出了建议.     

雪冰融水型洪水预报模型建立与应用

运用多元线性回归分析法建立雪冰融水型洪水预报模型,并采用新疆下坂地水库上游伊尔列黑水文控制站和喀什探空站2001年的实测资料进行模型检验。若采用日平均流量相对误差不大于20%作为模型的评价标准,则模型的整体预报合格率为82%,属于乙等预报水平,因此该模型可以用于实际的工程作业,解决施工期洪水预报难题。