A hardware/software co-optimization approach for embedded software of MP3 decoder     

ZHANG Wei LIU Peng ZHAI Zhi-bo 《浙江大学学报(A卷英文版)》2007,8(1):42-49

INTRODUCTION The rapid evolution of current consumer elec-tronic systems has been demanding that embeddedsystems have extremely short time-to-market simul-taneously with very low costs. As a result, it is betterby implementing large parts of the system function-ality in embedded software running on processor coreThe solutions range from general-purpose processorcores, digital signal processor cores (DSPs) and ap-plication-specific instruction-set processor cores(ASIPs). To achieve hig…  相似文献   

用于被动力/力矩再现的新型磁流变液阻尼器   总被引：1，自引：0，他引：1  

戴金桥  宋爱国  王爱民 《东南大学学报》2007,23(1):70-74

研制了一种用于被动力/力矩再现的新型磁流变液阻尼器,该阻尼器能够在磁场的作用下产生连续变化的阻尼力/力矩.阻尼器的结构包括一个上盖和一个下盖,一个转子设置于上盖和下盖之间,转子与上下盖之间的间隙充满磁流变液,在磁场作用下其粘度变大时,转子相对于壳体将受阻尼力作用.阻尼力矩的模型主要由以下几部分组成:一是由磁场作用于磁流变液产生的力矩,二是由磁流变液的动力粘度产生的力矩,最后是由装置的摩擦产生的力矩.由动力粘度产生的力矩可以通过简单的方法进行计算,由摩擦产生的力矩可以通过实验测得,而由磁场产生的力矩则要通过电磁场的有限元分析得到.最后,对研制的阻尼器原型进行了性能实验,检验了设计方法的有效性.  相似文献   

Talking Spirituality with Family Members: Black and Latina/o Children Co-researcher Methodologies     

Nadjwa E. L. Norton 《The Urban Review》2006,38(4):313-334

Children in public schools challenge people’s conceptions of them by talking about their spiritualities and spiritual practices. Based on a one-year multicultural feminist critical narrative inquiry, this article examines how Black and Latina/o first grade children co-researchers interview family members to think about their beliefs, encourage others, and to acquire more spiritual knowledge. I provide three counterstories in which children choose a mother, an older sister, and a younger brother to interview. These counterstories demonstrate children’s diverse literacies and spiritual practices, and families’ involvement in children’s lives. I discuss implications for educational practices in support of Black and Latina/o children and their families. I highlight ways pedagogical practices can be critiqued and transformed in order to better support children.Dr. Nadjwa E. L. Norton is an Assistant Professor in the Literacy Department at City College, CUNY. Her scholarship focuses on multiple literacies practices, spirituality, teacher education, equity-oriented multicultural education, and collaborative qualitative research designs. Address correspondence to Dr. Nadjwa E. L. Norton, Department of Literacy NAC 6/207, The City College of New York, 138th Street & Convent Avenue, New York, NY 10031, USA; e-mail: nnorton@ccny.cuny.edu.  相似文献   

Connecting Teacher Beliefs to the Use of Children’s Literature in the Teaching of Mathematics     

Rainy?Cotti  Michael?SchiroEmail author 《Journal of Mathematics Teacher Education》2004,7(4):329-356

This article presents examples that illustrate how teachers use childrens literature in the teaching of mathematics. The examples are related to four curriculum ideologies that have influenced mathematics education in the USA for the last 75 years. It discusses why it is relevant to help teachers understand the ideological positions that influence their use of childrens literature during mathematics instruction, summarizes the four ideological positions, and presents results of a study of how teachers ideological positions relate to their use of childrens literature in the teaching of mathematics. The study examines two research questionsCan an instructional tool be developed that will highlight for teachers the different ways in which they and others use childrens literature to teach mathematics? and Can that instructional tool stimulate teacher discussion and reflection about their own beliefs and the ideological nature of the instructional environment in which they learned (as students) and teach (as teachers)? Study results indicate that both questions can be answered in the affirmative.  相似文献   

一种B/S考试系统客户端控制功能的实现     

陈胜凯  陈艳  胡众义 《温州大学学报(社会科学版)》2005,18(6):61-65

随着Internet的普及，越来越多的考试系统从C／S模式过渡到B／S模式。但由于浏览器对客户端计算机的控制能力过于薄弱，使得在这种考试模式下学生容易打开WORD文档、电子邮件和金山词霸等进行作弊。为此，本文提出了一种客户端程序的实现，阻止学生使用这些方式进行考场作弊。  相似文献   

基于CPLD/FPGA的电类实验教学研究     

冯明库 《广东技术师范学院学报》2003,(6):85-87

本文着重介绍了CPLD／FPGA的主要特点，并提出了以CPLD／FPGA为中心的四个实验教学模式以培养大学生的创新能力，加强电类实验教学改革。  相似文献   

浅析基于网络技术的教学平台   总被引：2，自引：4，他引：2  

赵怀阳 《山西广播电视大学学报》2005,11(5):16-17

现代信息技术的发展,使得基于网络技术的多媒体教学平台成为现代教育技术改革与发展的方向。了解网络教学平台的技术特点,针对基于互联网In ternet的W EB技术的网络多媒体教学平台的设计思路以及主要技术的实现方法进行了一些探讨。  相似文献   

Windows NT下如何对物理内存和I/O的访问     

刘宏妮  乘英 《辽宁科技学院学报》2002,4(3):33-35

文章论述了一种在Windows NT4.0下利用NT设备驱动程序开发电（NTDDK）访问物理内存和I／O口的方法，经过实践检验此方法有较强的使用价值。  相似文献   

Integrating a moral reasoning game in a blended learning setting: effects on students' interest and performance     

Jon-Chao Hong  Nien-Chen Wu  Ying-Luan Huang  Pei-Hsin Lin  Yi-Ling Chen 《Interactive Learning Environments》2016,24(3):572-589

A new approach to moral education using blended learning has been developed. This approach involves 10 scenarios that are designed as a web-based game and serves as a basis for group moral-consequence-based reasoning, which is developed based on a hypothetical-deductive model. The aim of the study was to examine the changes in students' blended learning interest and reasoning ability in a time series experimental design. After playing the game with the 10 initial scenarios during the first week of the study, participants were subjected to five blended learning sessions that required them to discuss the consequences of one of the 10 scenarios using hypothetical-deductive reasoning. After six weeks, the data from the 110 participants were analyzed using time series statistics. The results indicated that players were highly interested in the game, although their interest had a tendency to decrease slightly over time. Repetitive game play (i.e. practice) was positively associated with the players' moral reasoning performance. The study results may lend support to the design of a game with additional or more highly complex content for players to further develop students' consequential reasoning ability.  相似文献   

单片机以太网嵌入式系统的实现方法     

狄金海 《浙江工贸职业技术学院学报》2003,3(4):23-29

随着INTERNET在中国的普及,针对INTERNET的各种技术也随之产生.目前,以太网协议已经广泛地应用在各种计算机网络,如办公局域网、工业控制网络、因特网等场合.基于以太网协议的各种设备也不断出现.本文介绍了用8位单片机采用以太网协议通过因特网传输数据的技术.  相似文献