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.     

谈色彩词中的特殊成员：物色词

色彩学将人们通常看到的各种物体的色彩称为“物体色”。当人们将形成“物体色”的要素之一：“物体本身”作为命名色彩的根据时，便产生了我们所谓的“物色词”。在动态的言语活动中，为了快捷而又准确地创造出符合语境的言语色彩词，不同的言语主体往往会不约而同地采取“近取诸身，远取诸物”的说明方法，从而使具有不同色彩特征的客观事物成为了言语主体说明某种特定色彩的最直观、最便捷、最形象的工具，最终使“物色词”成为色彩词随机造词活动中最常见的“产品”。     

论我国的自然保护区建设

本通过论述自然保护区的重要作用说明了我国自然保护区建设的重要性，指出了我国自然保护区建设取得的成就及存在的问题和应采取的对策。     

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.     

Flow shop rescheduling problem under rush orders

INTRODUCTION Rescheduling problem in manufacturing system is considered as a particularly hard combinatorial optimization problem,closely related with uncer-tainty caused by exterior business environment and interior production conditions.Production resched-uling is a common practice in manufacturing compa-nies all over the world.Four sources of production disturbances have been identified:(1)incorrect work;(2)machine breakdowns;(3)rework due to quality problem;and(4)rush orders(Rangsarit…     

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…     

扬州"花鼓戏"的艺术特点及其成因

扬州“花鼓戏”虽然是一种地方小戏，但它具有音乐的兼容性和独特性、表演艺术的模仿性和喜剧性、内容的多样性和世俗性等鲜明的艺术特点.扬州“花鼓戏”由于受到地理因素、观众需求和艺术氛围的影响促成了这些艺术特点的形成.     

中美关系中的“镜象”现象

影响中美关系的因素很多，其中国内政治因素对两国关系的影响极为突出和复杂。本文试图对新中国成立以来两国国内政治因素对中美关系的影响性质作一初探，进而认为应加强中美间对话和协调，避免双边关系恶性互动。     

棉花施用惠满丰有机复混肥增产效应研究

在当季不施肥,皮棉产量50kg/667m~2以上的生产条件下,棉花施用惠满丰有机复混肥30-70kg/667m~2,伏前桃增加1-1.5个,株高增加9.9-17.1cm,茎粗增加0.2-0.8mm,有效果枝增加约1.3个,单株成铃数增多1.1-3.1个,单铃重约增加0.4-0.5g,霜前花率提高3-9个百分点,衣分、子指也有所提高,比对照增产皮棉14.1-31.8kg/667m~2,增幅27.4％-61.1％(平均45％)。在等养分量情况下,惠满丰有机复混肥肥效优于化肥。惠满丰有机复混肥的经济合理施肥量为70kg/667m~2。