教师的创造性人格及培养模式

创造性的人格特征是教师素质的重要方面,在教师创造活动中起着动力、导向、调节作用.教师的创造性人格特征,一方面为创造型教师的成长提供帮助,另一方面也为教师培养学生的创造精神、创造能力提供重要手段.本文在阐述教师创造性人格的基础上,论述教师创造性人格特征的培养模式,即认知切入、情境陶冶、活动交往、体验反思.     

计算机分析视听型教学系统

本文论述了计算机分析视听型教学系统的总体结构、硬件技术特点和软件结构。本系统作为一种先进的现代教学工具,对于提高我国的教学质量和改进教学方式都将起到重要作用。文章中对该系统的设计目标、硬件实施的具体技术特点以及软件功能模块的作用也作了详细的描述。     

加速度观测器设计与仿真

介绍了利用状态反馈综合带加速度反馈的最优控制系统，利用系统所检测的位置量和速度量设计了加速度观测器，并对综合的最优控制系统进行仿真，包括系统幅频、相频特性及状态估计值与真实状态之间的误差，最后给出了有、无加速度观测器反馈时系统跟踪晃动误差曲线。带加速度观测器反馈系统使晃动误差减小84％，滤除噪声的效果也比较好。     

一种可行的智能三维特观设计系统的设计方法

针对复杂地区地震勘探的三维观测系统设计这一困扰广大地震勘探科技人员的难题，进行了较为全面细致的分析和论述，文章从与三维地震勘探的成本和效益方面密切相关的覆盖次数问题，激发点冗余浪费问题，以及特管勘探设计与常规勘探设计的关系问题入手，进行了深入的探讨，并给出了一种解决该问题的计算机交互式实现方法，对于三维地震勘探具有指导价值。     

高校文科数学教育的课程价值及其实现

数学教育是数学文化的教育．文科数学教育的价值取向必须体现育人为本的课程设计观和服从于文科专业培养目标的宗旨．在文科数学教育的实践中，要从文科专业的学科性质、课程体系、培养目标上明确文科数学教育的课程定位、教师职责和改革目标，使文科数学教育切入到文科专业人才培养模式的改革之中。     

关于武昌鱼败血症的防治

论述武昌鱼败血症的病原体 ,发病的主要症状 ,流行情况 ,病原体致病条件及防治的主要措施。     

基于广义混沌同步的数字图像隐藏方案

基于广义混沌同步理论，提出了一种适于网络图像传输的隐藏数字图像的安全通讯方案．构造了一个六维广义混沌同步系统作为新方案的加密器，理论分析和计算机模拟说明本方案具有较高的保真度和较强的抗破译能力．     

Poly(phenylene vinylene)‐based copolymers containing 3,7‐phenothiazylene and 2,6‐pyridylene chromophores: Fluorescence sensors for acids,metal ions,and oxidation

A novel copolymer, poly(N‐hexyl‐3,7‐phenothiazylene‐1,2‐ethenylene‐2,6‐pyridylene‐1,2‐ethenylene) ( P3 ), containing N‐hexyl‐3,7‐phenothiazylene and 2,6‐pyridylene chromophores was synthesized to investigate the effect of protonation, metal complexation, and chemical oxidation on its absorption and photoluminescence (PL). Poly(N‐hexyl‐3,8‐iminodibenzyl‐1,2‐ethenylene‐1,3‐phenylene‐1,2‐ethenylene) and poly(N‐hexyl‐3,7‐phenothiazylene‐1,2‐ethenylene‐1,3‐phenylene‐1,2‐ethenylene) ( P2 ), consisting of 1,3‐divinylbenzene alternated with N‐hexyl‐3,8‐iminodibenzyl and N‐hexyl‐3,7‐phenothiazylene, respectively, were also prepared for comparison. Electrochemical investigations revealed that P3 exhibited lower band gaps (2.34 eV) due to alternating donor and acceptor conjugated units (push–pull structure). The absorption and PL spectral variations of P3 were easily manipulated by protonation, metal chelation, and chemical oxidation. P3 displayed significant bathochromic shifts when protonated with trifluoroacetic acid in chloroform. The complexation of P3 with Fe³⁺ led to a significant absorption change and fluorescence quenching, and this implied the coordination of ferric ions with the 2,6‐pyridylene groups in the backbone. Moreover, both phenothiazylene‐containing P2 and P3 showed conspicuous PL quenching with a slight redshift when oxidized with NOBF₄. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 1272–1284, 2004     

试述招标机制在企业中的运用

随着社会主义市场经济体制的建立、健全和日益完善，招标机制成为企业经营管理的客观需要，阐述了招标机制在企业中的具体运用，提出了在运用招标机制的过程中应注意的几个问题。     

The genetic diversity of cen-tral and peripheral popula-tions of ratlike hamster(Cricetulus triton)

The impact of habitat fragmentation and isolation on the genetic diversity of populations has attracted much attention in studies of meta-population and conservation biology. In this work, using the randomly amplified polymorphic DNA (RAPD) technique, we studied the genetic diversity of central, peripheral and peninsular populations of ratlike hamster, which were collected in five locations of the North China Plain and its surrounding areas, in 1999. The study revealed that, ⅰ) the genetic diversity of central population of Raoyang County＞the sub-central populations of Gu'an County and Taikang County＞the peripheral population of Shunyi District＞the peninsular population of Mentougou District; ⅱ) the genetic diversities of the five populations were positively correlated to the nearest distances to the peripheral line of population distribution; ⅲ) there were significant differences of gene frequencies of some RAPD fragments among the five populations. More RAPD fragments disappeared in peripheral populations than in central or sub-central populations. The frequencies of two RAPD fragments were correlated to the latitude. This study clearly indicated that the variation of the genetic diversities of the five populations was caused by edge effect and frag- mentation through the enhanced inbreeding and genetic drift, and thus supported the view that habitat fragmentation and related edge effect reduce the population genetic diversity.