The relationship between social desirability and internal consistency of personality scales.

3 hypotheses concerning the relationships between psychometric characteristics of 61 personality scales were tested. A measure of internal consistency (Kuder-Richardson Formula 21) was found to be positively correlated (.62) with the degree of imbalance in the social desirability keying of the scales. Internal consistency was also negatively correlated (-.46) with the proportion of neutral items in the scales. The mean probability of a keyed response to the items in a scale was positively correlated (.83) with the proportion of items keyed for socially desirable responses. These results are consistent with predictions based upon social desirability considerations. (19 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Y-Invalidate: A New Protocol for Implementing Weak Consistency in DSM Systems

In this work we propose and implement a new variant of the well-known write invalidate protocol called Y-invalidate. Whereas the former protocol required that every copy of a page be invalidated every time that page is updated, our variant invalidates a copy of a page at process A only at the next synchronization point which is relevant to Aand or if the copy was modified by the owner's process after the page was copied to A. We thus avoid invalidating copies of pages that were modified but never read after modification, and avoid, of course, the associated overhead. Y-Invalidate is basically a weak-consistency protocol. Its main advantage is that it implements weak consistency without the need to merge copies of a page that were updated in different machines. To the best of our knowledge, this is the first variant of weak consistency protocols which does not merge multiple copies of pages. Unlike other variants of weak consistency, Y-invalidate supports implicit synchronization points in the program by invalidating copies of shared memory pages that are referenced by while-loops. In this way, Y-invalidate approximates strict consistency. The Y-invalidate protocol was implemented in the ParC system, which is a powerful parallel extension of the C language. The ParC compiler was modified to detect some of the implicit synchronization points in the source code. Experimental results show significant improvement compared to both the traditional write-invalidate protocol and weak consistency.     

基于格拉布斯准则的雷达信号分选方法的探讨

通过引入统计学中剔除异常数据的格拉布斯准则,将其与基于算数平均和递推估计的"一致性校验"算法相结合,提出了一种基于此准则的雷达信号分选方法.首先介绍了格拉布斯准则在统计学中分选数据的算法流程,以脉冲幅度(PA)为例作为采样数据样本,讨论了该方法在雷达信号分选中的实现过程,围绕该方法中关键参数的不同选取给分选性能带来的影响,通过MATLAB的仿真分析验证了该方法应用于反辐射导弹(ARM)雷达信号分选的有效性和可行性.     

基于HA结构的HLR系统容灾中心技术

文中分析了移动通信系统归属位置寄存器(HLR)中数据的一致性和安全性,认为应采用基于双PC服务器的外挂磁盘列阵的HA平台和N M模式的容灾中心系统来提高系统的可靠性。同时给出了大容量数据库的数据一致性和安全性解决方案。     

远程复制系统数据一致性研究与实现

针对远程数据复制容灾系统中的数据一致性问题,提出了保证数据一致性和视图一致性并优化系统性能的实现思想,即使用日志卷记录用户请求顺序,通过保持主、从两端数据卷上数据块的更新顺序来保证数据一致性,对于不同的数据类型采用不同的传输方法。论述了它的组织结构、实现流程以及关键技术。     

泌阳凹陷古城、新庄油田稠油稠变程度对比分析

根据泌阳凹陷古城、新庄油田不同的稠油物性特征及9口井油砂的氯仿沥青“A”、族组分及饱和烃色谱分析资料,对两油田稠油的地球化学特征及其稠变程度进行了分析和对比;研究了稠油族组分与距离新近系不整合面远近的相关性,探讨了稠油族组分与油层埋藏深浅、稠变程度高低的关系;指出了古城油田油藏的成藏时间早、新庄油田成藏时间晚是造成古城油田稠油稠变程度高于新庄油田的主要原因。     

基于自适应窗的立体相机视差图优化方法研究

针对通过立体匹配直接得到视差图存在空洞等失真点(区域)的问题,本文提出一种基于自适应窗的视差优化方法.该方法先通过左右图像的视差一致性,检测出非零视差失真和黑洞失真区域,然后将所在像素点与周围像素点作视差代价比较,并针对由环境、光照以及其他噪声因素造成的误匹配所导致的黑洞区域,通过采用自适应窗填充黑洞失真区域,进而利用...     

MEK－2200纸浆浓度变送器结构原理及调试方法

介绍了ＭＥＫ－２２００纸浆浓度变送器的结构原理、调试及操作，并对该仪器在南平造纸厂机浆高浓漂白系统控制过程的应用效果做了简介。     

中浓浆泵湍流发生器叶片型线设计研究

湍流发生器是离心式中浓纸浆泵的关键部件,其作用是使纸浆实现流体化并进行气液分离。本文提出一种采用等螺距和变螺距相结合的叶片型线的湍流发生器,推导了其型线方程。为了验证新设计叶片型线湍流发生器的性能,设计了4种不同叶片型线的湍流发生器。基于CFX软件,采用Eeulerian气液两相流模型和RNG k-ε湍流模型,模拟了不同叶片型线的湍流发生器中浓纸浆悬浮液的三维流场,预测了水力性能和气液分离效果,分析了不同叶片型线对湍流发生器性能的影响。结果表明,采用等螺距和变螺距相结合的叶片型线的湍流发生器具有较好的水力性能和气液分离效果。该模型在生产实际中得到了应用。     

风速系列一致性修正方法研究

近几十年来,受人类活动和环境变化的影响,气象台观测风速呈明显的下降趋势。本文通过聚均修正、提取趋势项修正、聚均修正＋提取趋势项修正三种修正方法对风速系列进行修正,推求满足频率计算一致性要求的风速系列。实际应用表明,修正方法具有良好的适应性及修正效果。