建筑产品优质优价模式分析

由于当前建筑产品价格未充分考虑产品内在的质量及施工管理水平 ,文章对此提出了分析模式及现行建筑产品计价方式的改进 ,并对建筑产品实行优质优价的重要性进行了阐述 ,以促进建筑市场的不断完善     

一个改进的循环2路插入排序算法

对一个循环2路插入算法进行了改进,其有序区在序列的始末连接端形成,简化了算法实现,算例表明排序效率也得到了一定提高.     

Counting and particle transmission efficiency of the aerodynamic particle sizer

The aerodynamic particle sizer (APS) measures the size distributions of particles with aerodynamic diameter between 0.5 and in real time. To provide accurate size distributions, the APS must measure both particle size and concentration correctly. The objective of this study was to characterize the counting efficiency of the APS as a function of particle size (0.8–), particle type (liquid or solid), and APS model number (3310 vs. 3321). For solid particles, counting efficiencies ranged between 85% and 99%. For liquid droplets, counting efficiencies progressively declined from 75% at 0.8-μm drops to 25% for 10-μm drops. Fluorometric wash tests indicated that transmission losses occur when larger droplets impact on the instrument's inner nozzle. However, transmission losses did not account entirely for the reduced droplet counting efficiencies, indicating that additional losses may have occurred downstream of the inner nozzle. Between instrument comparisons revealed that although multiple APSs report similar number concentrations, small deviations in particle sizing can produce substantial errors when number concentrations are converted to mass concentrations.     

Using sentinels in insert sort

The inner loop of insert sort can be simplified by using a sentinel value. We suggest a way of avoiding the extra storage normally required for the sentinel, and a way of avoiding the prior, and possibly restrictive, choice of its value. Algorithms are given in Pascal.     

多相介质成分测量中的脉冲幅度分析器

本文叙述了一种用于多相介质成分测量中的脉冲幅度分析器，它接收来自探测器的脉冲序列信号，这些脉冲的幅度分布具有两个峰位，分别对应于γ射线的不同的能量。分析器能将序列中不同幅度的脉冲进行甄别，并输出两路独立的计数脉冲，该分析器电路结构简单，速度快，稳定性好。     

YB50全自动硬币计数、包卷机的研制

介绍了YB50全自动硬币计数、包卷机的系统组成、工作原理及其控制技术。     

粒子望远镜对短寿命转动源的探测效率

文章计算了喷氦传输、转盘收集和粒子望远镜探测系统的探测效率,并编制成计算机程序,以实验数据和模拟参数输入迭代计算,可得核的实验反应截面、半衰期和粒子发射分支比等参数,其计算结果在合理范围内与理论预言符合一致。此计算特别适用于远离β稳定线短寿命核素的探索研究。     

一种新的排序算法——端点排序算法

提出了一种新的排序算法：端点排序算法。其方法为：依次找出数据总数为N的数列最小和最大值,把二者放在本次所排数列的两端,再把剩余两端之间的数据总数为N-2的数列的最小值和最大值找出,放在此数列的两端,依此类推,直至数列中间,实现整个数组的排序。实验表明,该算法具有与冒泡排序更快的性能。在数据个数较多的情况下优于选择排序。     

智能归并排序

文中详细介绍并分析了归并排序算法的优缺点,针对归并算法的强制把数据划分两份进行了改进,提出按照数据本身具有的规律进行智能归并排序划分的方法。该方法将局部有序的记录块作为一组,避免对已经有序的数据划分再归并;而对局部逆序的记录块先进行内部旋转再进行分组。并且针对归并算法拷贝数据费时的缺点．采用了原数据空间与临时数据空间依...     

Origins of adolescents' ideal self: An intergenerational perspective.

The present longitudinal study traced the ideal self of 120 adolescents to the ideals that parents hold for themselves and for their children. Ideals were assessed using Q sorts for personality attributes and life goals. After permutation analysis was used to control for random similarity, moderate parent-child ideal-self similarity was evident. Three intermediate transmission steps accounted for this intergenerational similarity: (a) transfer of parents' ideal self to ideals for their children, (b) children's perception, and (c) acceptance of these parental ideals. The last 2 processes related to parenting practices, with parental warmth augmenting parent-child concordance and restrictiveness reducing it. Compared with boys' ideal self, that of girls was more similar to the ideals that parents hold for their children and for themselves. Analyses of patterns over time suggested a growth of ideal-self stability across adolescence. (PsycINFO Database Record (c) 2010 APA, all rights reserved)