Cost-effective smart power CMOS/DMOS technology: design methodology for latch-up immunity

To answer to the need of a cost effective smart power technology, an original design methodology that permits implementing latch-up free smart power circuits on a very simple CMOS/DMOS technology is proposed. The basic concept used to this purpose is letting float the wells of the MOS transistors most susceptible to initiate latch-up. The efficiency of the design methodology is experimentally shown.     

Optoelectronics in satellite designs

Design of artificial satellites for communication, remote sensing and scientific investigations follows, at present, a fixed pattern based on existing and proven technologies and the requirements of payload or experiment within the constraints of weight, volume and power available. The advances in optoelectronic components and systems have opened up a new dimension in designing satellites of the future, incorporating new technologies. This paper deals with general satellite design concepts based on optoelectronic systems wherever applicable.     

Achievement of specificational information usage with true and false feedback in learning a visual relative-mass discrimination task.

Participants' usage of informational variables in learning visual relative-mass discrimination in collisions was tracked by means of PROBIT correlations. Four groups received feedback that was true or accorded with either of three nonspecificational cue variables. A majority in each group adopted the feedback, but several participants defied the false feedback. Unlike in previous research, the fit to data of the relative-mass invariant could not be bettered by post hoc linear combinations of the cues. Discriminability was lower in the use of the invariant. Analytic complexity was rejected as an explanation for discriminability differences. A "smart mechanism" for pickup of the relative-mass invariant was developed as an extension of G. Johansson's (1950/1994) vector model. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

手机市场呼唤召回制度

我国移动电话用户数已跃居世界第一位,且依然蕴藏着巨大的商机。由此不但引发了日趋激烈的市场竞争,而且造成了产品质量投诉量的居高不下,其中对于存在先天设计缺陷产品的处理目前在我国尚无法可依。国际上对缺陷产品实行的召回制度同样适用于我国。这是市场经济规则的需要,也是商家诚信作风的体现。我国已融入世界经济大潮之中,目前建立手机召回制度是必要和适时的。对生产企业而言,一旦发现缺陷产品流入市场,即刻确认并将其召回是明智之举。     

IP电话的实现及其关键技术

IP电话在推出后短短十年的时间以其低价、高效、灵活的特点迅速发展起来。本文介绍了IP电话的基本结构，比较了IP电话与普通电话的优缺点，讨论了IP电话的相关协议及关键技术，在这些基础上进一步指出IP电话的发展趋势，相信IP将成为未来信息通信的主导技术。     

一种智能卡口令认证方案的分析与改进

袁,吕提出了一种智能卡口令认证方案.在他们的方案中,用户能随意更改口令,远程系统不需要存储用户的口令表或验证表,并能防止重放攻击.作者指出袁-吕方案不能抵抗假冒攻击,并进行了改进.     

电流变体特性及电流变体应用器件的进展

本文详细评述了电流变体(ERF)材料的组成、工作机理及其流变力学性能,提出以Bingham塑性体来近似描述电流变体的流变特性,综述了电流变体在智能材料、汽车离合器、液压阀门等器件中的应用,给出了含电流变体的双层智能复合材料梁单层、双层加电状态对其振动特性的影响,设计了含电流变体的主动控制式减振器,并对其在外加电场作用下的减振性能进行了评价。     

光纤智能复合材料

对光纤型智能复合材料的工作原理，性能特点和应用前景作了介绍，并讨论了制造成型的技术问题。     

校园IC卡系统设计与管理信息系统

本文通过一个实际的IC卡应用系统一校园IC卡系统的设计与实现过程，给出了开发研制IC卡应用系统的基本方法．本文还对校园IC卡管理信息系统作了介绍．该系统的管理软件采用数据库语言FoxProforWindows编写，具有人机界面友好直观、多画面、多窗口、安全可靠等特点．     

视觉技术在YP19装封箱机中的设计与应用

介绍视觉技术在YP19装封箱机的装箱过程中的应用,简述视觉技术系统的基本组成、工作原理及软件设计。