Improved fast intra prediction algorithm of H.264/AVC

With advanced prediction modes of intra prediction, intra coding of H.264/AVC offers significant coding gains compared with previous video coding standards. It uses an important tool called Lagrangian rate-distortion optimization (RDO) technique to decide the best coding mode for a block, but the computational burden is extremely high. In this paper, we proposed an improved fast intra prediction algorithm including block type selection and mode decision algorithm based on analysis of edge feature of a block. Our algorithm filters out unlikely block type and candidate modes to reduce the RDO calculations. Experimental results showed that the proposed algorithm can reduce the computation complexity of intra prediction from 52.90% to 56.31%, with 0.04 dB PSNR degradation and 2% increase of bit rate.     

职业高中整体推进素质教育目标管理初探

要实现职业学校的培养目标,就必须整体推进素质教育。应根据现代学校管理的系统原理,采用整分合的方法,实行目标管理,将职业学校整体推进素质教育的总体目标和整体工作进行科学分解,形成系统的彼此关联的素质教育目标系统。     

关于增算子和减算子的几个不动点定理

本文引进了拟正规锥的概念，用它来确定Banach空间E的半序．在半序空间E中，给出了一些关于增算子和减算子的不动点定理，从而推广了文[1]、[2]、[3]中的某些结果．     

Triadic interaction in clinical task-based interviews with mathematics teachers

A clinical task-based interview can be seen as a situation where the interviewer–interviewee interaction on a task is regulated by a system of explicit and implicit norms, values, and rules. This paper describes how documenting and mapping triadic interaction among the interviewer, the interviewee, and the knowledge negotiated can be used to increase procedural replicability of the interview and accuracy of drawn conclusions about the interviewee’s thinking process. Excerpts from interviews with 25 inservice mathematics teachers working on a task to make up a problem whose solution requires division of two fractions are discussed. The excerpts illustrate the relationship between methodological decisions taken by the interviewer during the interview and the applicability of the interview output to the research questions. A divergent analysis of the interviews with these teachers, which spanned over two years and were conducted by four interviewers, is used to offer a framework for analyzing data collected in clinical task-based interviews.     

儿童青少年使用电脑对其认知技能发展的影响

系统介绍和分析儿童青少年使用电脑对其认知技能产生的影响。儿童青少年对于电脑的使用主要指电脑游戏和互联网两方面。指出当前研究的不足并提出看法。     

基于核密度估计多样性采集的背景建模算法

1IntroductionBackground subtraction methods are extensively ex-ploited for moving object detection in videos in manyapplications ,such as traffic monitoring[1],human mo-tion capture[2]and video surveillance[3]. The centralidea behind such methods is to segment foreground ini mage sequences taken from a fixed camera by com-paring each newframe to a model of the scene back-ground . Therefore , correctly and efficiently modelingand updating the background model is one of the mostchallenging aspec…     

英语教学中如何实施文化背景知识教学

语言有着丰富的文化内涵。在英语教学中,文化主要指英语国家的历史,地理,风土人情,传统习俗,宗教信仰,生活方式,行为规范和价值观念等。针对忽视文化背景知识所造成的英语教学和教材中的问题,本文将从听、说、读、写、译五个方面浅谈如何在英语教学中灌输英语国家文化背景知识,而不是简单地教授语言知识和技能,从而实现跨文化交际教学法。只有这样学生才能在英语学习中具有全球视野,不仅学到英语语言知识,而且学到文化背景知识。     

试论儒学的人文精神及其"异化"

孔孟儒学产生于春秋战国时期资本主义因素有很大发展的历史背景下,而且反映了资本主义因素发展的进步要求,正如西欧封建社会的文艺人,启蒙运动等思潮反映了资本主义萌芽发展的时代要求一样,然而,秦汉以后的儒学出现了“异化”的趋势,这种“异化”的儒学完全背叛了孔孟儒学的民主精神。     

口腔仿真模拟系统及其在临床前教学中的应用

介绍口腔仿真模拟系统的主要构成以及功能特点。在口腔临床前教学中应用此系统不但能够增强学生的学习积极性、巩固基础理论知识,而且能够提高临床操作技能,值得进一步在口腔教学中推广应用。