基于AHP-SPA的水库移民后期扶持效果评价

对水库移民后期扶持效果开展评价研究有利于研判水库移民后期扶持政策的落实情况,为水库移民相关政策的动态调整提供科学参考。本文以甘肃省水库移民后期扶持效果为研究对象,通过梳理相关调查成果及政策文件,综合经济、社会、环境等方面的因素,针对水库移民问题筛选了5 个一级指标28 个二级指标建立了后期扶持效果评价指标体系,运用层次分析法和集对分析法先后确定评价体系中各指标的权重和联系度,最后通过评价等级的计算来定量评价水库移民后期扶持效果。甘肃省水库移民后期扶持效果总体评价得分为0.420,评价等级为良,指标中基础设施联系度较低,未来应重点加强移民村基础设施建设。     

Comparison and analysis of bare soil evaporation models combined with ASTER data in Heihe River Basin

Based on ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) remote sensing data, bare soil evaporation was estimated with the Penman-Monteith model, the Priestley-Taylor model, and the aerodynamics model. Evaporation estimated by each of the three models was compared with actual evaporation, and error sources of the three models were analyzed. The mean absolute relative error was 9% for the Penman-Monteith model, 14% for the Priestley-Taylor model, and 32% for the aerodynamics model; the Penman-Monteith model was the best of these three models for estimating bare soil evaporation. The error source of the Penman-Monteith model is the neglect of the advection estimation. The error source of the Priestley-Taylor model is the simplification of the component of aerodynamics as 0.72 times the net radiation. The error source of the aerodynamics model is the difference of vapor pressure and neglect of the radiometric component. The spatial distribution of bare soil evaporation is evident, and its main factors are soil water content and elevation.     

300MW汽轮机次末级叶根裂纹原因和处理

某电厂300MW汽轮机低压缸次末级叶片(反向第5级)出汽侧的叶根在运行时发生裂纹现象,在机组进行A级检修时,检验人员在对低压缸末级、次末级、末三级叶片、叶根、围带等部位进行宏观检查时,发现次末级叶片(反向第5级)的叶根第5#、第6#、第20#存在贯穿性横向裂纹。通过进一步开展全面的表面渗透探伤检验发现次末级叶片(反向第5级)的第14#、35#、46#、62#、70#也存在不同程度的裂纹现象。经过与生产厂家配合,找到产生裂纹的真正原因,并对存在裂纹的叶片进行了全部更换和未发生裂纹叶片的后序处理工作,确保了该台汽轮机的安全运行。     

羽毛球基础阶段教学训练目标的研究

羽毛球基础阶段教学训练主要适用于通过启蒙阶段学习与训练，经过考核达到一定要求的9～15岁少儿羽毛球运动员。文章从羽毛球基础阶段的训练任务日标、负荷安排、训练内容三个方面进行分析研究，总结出羽毛球基础阶段教学训练的一般要求及其特点。     

Consumer value and self-image congruency at different stages of timeshare ownership

An understanding of customers’ perceptions of value is fundamental to the competitive nature of all industries. Using the timeshare resort sector as a context for our studies, we explore the ways in which consumers, grouped according to their timeshare ownership stage, perceive value. Data were collected from three samples: non-owners of timeshare, recent purchasers of timeshare, and longer-term timeshare owners. Value was shown to be multi-dimensional, with a stable pattern of eleven correlated value factors evident in all three samples. The groups differed in their assessments of the different dimensions of value. In all groups, however, value was positively correlated with attitudes and future intentions regarding timeshare. Self-image congruency explained additional criterion variance. The findings demonstrate that, even among consumers who have never used timeshare, value and self-image congruency are substantial and unique predictors of attitudes and intentions regarding this tourism product.     

论建筑工程施工阶段的测量工作要点

建筑工程施工中的测量工作是工程建设的基础,对工程质量起着直接的影响,因此,在施工阶段必须重视和加强测量工作,确保建筑工程准确地根据设计要求进行施工。本文主要结合实践,探索如何做好建筑工程施工阶段测量工作。     

基于Penman-Monteith公式的双源模型的改进

本文在Penman-Monteith公式的基础上，推导出能解析计算冠层蒸腾和土壤蒸发的双源模型，使之能广泛用于农田蒸腾和蒸发的计算.采用玉米田波文比-能量平衡(BREB)观测资料对模型进行检验，模拟的蒸散量与BREB的结果相当一致.模型 主要参数对蒸散的敏感性分析表明，这些参数变化±20%时，蒸散的响应小于±7%.     

年极值水位的灰色马尔科夫预报模型

本文将灰色系统与马尔科夫链理论相结合，提出了一种高精度的预报模型———灰色马尔科夫模型．计算表明，年极值水位的预报值很好地吻合了实测结果．此外，本文还得到了一种精度提高的求解ＧＭ（１，１）的新方法．     

郁江上游洪水分析

用多种洪水演进方法对郁江上游南宁、百色年最大洪水、特别是百色到南宁区间洪水作了分析计算，得出百色至南宁区间设计洪水成果，与实测比较精度较高     

苹果树根系吸水研究方法的讨论

介绍了根系吸水模型研究现状;对建立苹果树根系吸水模型所需要的植株蒸腾量、棵间蒸发量、根系密度、土壤含水量等的测定方法进行了探讨．分析了苹果树与作物根系吸水的不同之处．介绍了热脉冲技术测定苹果树蒸腾量、微型蒸渗仪(microlysimeter)测定棵间蒸发量、剖面法测定根系密度、TDR测土壤含水率的技术;最后,探讨了建立苹果树根系吸水模型应注意的具体问题,并进一步提出了利用空间随机场理论研究整个苹果园中苹果树的根系吸水模型的观点,即：将苹果园中的各个苹果树看作小扰动的空间随机变量,然后利用空间随机场理论研究整个苹果园中苹果树的根系吸水情况。