3G时代光传输网的发展与演进

对3G时代光传输网发展的新技术作了具体分析,并就技术演进方向进行了探讨。     

基于G.709的开方式传输网络(OTN)

首先介绍了基于G.709的光传送网的概念以及优势,接着对OTN网络分层结构进行了论述,最后着重分析了OTN帧开销以及数字包封技术.     

第五媒体的特征及核心服务内容研究

3G时代的推进带来了第五媒体的广泛发展,研究3G时代第五媒体的特征,分析其核心服务内容.     

超标准数学的兴起

本文从数理逻辑、数系扩张、理想元素、超有限集覆盖法、模拟客观世界乃至教学原则等方面简论超标准(非标准)数学的重要意义.本文旨在说明超标准分析在理论上是别开生面的课题,实用上是独辟蹊径的研究.     

Theme and prose comprehension: Understanding or depth-of-processing?

Context orientation and depth of processing were tested as possible explanations for thematic organization. In the first experiment, the process of searching for the theme of concrete versions of prose passages by undergraduates was detrimental to subsequent recall. On the other hand, theme statements facilitated recall when provided prior to concrete as well as abstract versions of each passage. Finally, the theme search process with the abstract versions was beneficial only when the correct theme was identified. A second experiment provided further data supporting the comprehension hypothesis for theme organization when precise, instructor-generated theme statements were used instead of learner-generated themes.     

The influence of decision factors on what is reported in free recall of a brief narrative

In recent research on memory for prose, attention has focused on the influence of a reader's perspective or schema on what is encoded and subsequently recalled. Previous research has revealed that subjects were able to recall previously unrecalled information if they were directed to take a new perspective during a second recall trial. This has been termed the perspective shift effect. This paper describes two possible mechanisms to account for the perspective shift effect—a retrieval process and a decision process. Two experiments which investigated the roles of these processes in the perspective shift effect are described. Experiment 1 employed an incentive to influence the subjects' criterion for reporting recalled information. Experiment 2 obtained separate estimates for decision and memory processes by applying signal detection theory. The results of both experiments provide data that tend to rule out the decision process as an important factor in the perspective shift phenomena in recall.     

基于WCDMA网络导频污染优化分析

本文针对3G网络常见的导频污染现象进行了论述,对其产生的原因及影响进行了详细的分析,结合其他地市和本地的WCDMA网络优化经验,以天馈调整和导频功率调整为主要手段来解决3G网络导频污染现象,对解决3G网络导频污染现象提出了一些改进的思路和方法。     

线阵LED图文显示装置的设计——基于2012年江苏省电子设计竞赛项目

以TI公司生产的MSP430G2553作为控制器,利用人眼视觉暂留的生理特性,设计了一种新型线阵LED图文显示装置。通过电机带动一列16位LED高速旋转,而由单片机精确控制,实现字符、图形及简单动态画面的清晰显示,并可实时变更显示内容及显示方式。     

DEVELOPMENTALLY APPROPRIATE PRACTICES IN TEACHER EDUCATION: LESSONS FROM ONE SEMESTER

Abstract

A major challenge for teacher preparation programs and future teachers is learning to work skillfully with the diversity of children in American classrooms. This paper describes a tool developed to address this challenge: the Learning and Teaching Assessment System (LTAS). The LTAS is a performance‐based, curriculum‐embedded assessment tool designed to uncover young children's strengths in different curricular areas as well as their approaches to learning. Developed for use with children 3–8 years of age, the LTAS helps teachers understand what children know in relation to key concepts in the different disciplines as well as how they learn in order to further their learning in subsequent days and weeks of teaching. The development of the LTAS is based primarily on two theoretical frameworks: Leont'ev's activity theory and Gardner's theory of multiple intelligences. To examine the efficacy of the LTAS in its proposed objectives, a pilot study was conducted; results point to the potential of the LTAS for helping student teachers uncover new information about children to guide future instruction.     

大学语文双语教学初探

在我国高校的大学语文教学过程中实施英汉双语教学,具有重要的现实意义和价值。这主要体现在以下四个方面：可以开辟教学改革的新方向,可以激发学生的学习兴趣,可以契合学生的现实需求;可以提升教师的教学素质。