全球最小测谎机

德州仪器（TI）最近宣布推出Burr—Brown产品线的新系列高精度、微功耗运算放大器（OpAmp）。0PA379系列的工作电压范围介于1．8V～5．5V之间，并具有高性能单电源操作、超低静态电流（2．9uA）以及低静态电流噪声（80nV／rtHz）等优异特性。该器件采用微型封装，非常适用于电池供电的应用。     

新品快报

德州仪器(TI)最近宣布推出Burr-Brown产品线的新系列高精度、微功耗运算放大器(OpAmp)。 OPA379系列的工作电压范围介于1.8V～5.5V之间,并具有高性能单电源操作、超低静态电流(2.9uA)以及低静态电流噪声(80nV/rtHz)等优异特性。该器件采用微型封装,非常适用于电池供电的应用。该系列的独特产品能够提供出色的单位增益带宽/静态电流比(90kHz/2.9uA),与耗流量类似的产品相比,噪声要低得多。该产品拥有完美的DC 精度参数组合——Vos(最大值为1.5mV)、 CMRR(最小值为90dB)、PSRR(最大值为10uV/V)以及AOL(最小值为100dB),对于要求高精度与低功耗的应用设计极富吸引力。     

Mieroehip推出低功耗自动调零运算放大器

Mieroehip Technology Inc．（美国微芯科技公司）推出MCP6V01／2／3（MCP6V0X）自动调零运算放大器（op amp）。这款低功耗运算放大器配备独特的自校正架构,可实现超高精度,输入偏移电压仅为2μV。此外,新器件还具有高共模抑制、轨对轨输入／输出及低静态电流等特点,适用于工业及医疗等市场上以电池供电的便携式设备。     

I/O扩展器TCA6408

TL97X运算放大器系列产品的工作电压可低至±1．35V,其具有轨至轨输出信号摆幅,分为单路、双路和四路运放版本。当F=1kHz时,其具有0．003％THD的特性以及4nV／rtHz等效输入电压噪声、2．7V～12V的宽泛的VCC范围、12MHz增益带宽和5V／μs的压摆率。     

盛群量产LCD面板驱动IC——HT0610

盛群半导体推出一颗STN型的LCD驱动／控制IC——HT0610。它包含4个Annunciator Outputs及153个高压的LCD驱动信号。IC工作电压范围为2．4～3．5V，静态功耗小于1μA。     

一种CMOS串联集成稳压器的设计与分析

设计了一种CMOS集成串联稳压器,由带隙基准源、误差放大器和分电压元件等组成。内部带隙基准源电路采用带有启动电路和PATA电流的设计。仿真结果表明输出电压为2.5V,当电流从1uA到100mA变化时,输出电压能稳定在2.5V,输出纹波小于120mV,瞬态工作电流100uA,且具有较强的电流驱动能力。     

新型高集成度调谐器

ISL81487L是Intersil公司专门为RS-485数据总线系统而设计的一款低功耗、半双工接口器件，能够在4．5～5．5V宽工作电压下工作，完全符合TIA／EIA-485A标准。做为一款低功耗产品，典型静态工作电流为0．15mA，在停机模式下ICC电流值仅为1nA，是功耗敏感型应用的理想器件，有利于降低系统整体功耗。ISL81487L具有±15KV HBM抗静电特性；对驱动器过载提供限流和热关闭保护。     

德州仪器针对便携式高精度应用推出业界最低功耗零漂移仪表放大器 提高精确度,延长电池使用寿命

<正> 日前,德州仪器(TI)宣布推出一款业界功耗最低的零漂移仪表放大器,从而实现了高精确度、低功耗以及低电源电压的完美结合。与性能最接近的竞争产品相比,该器件实现了最低的静态电流与输入偏置电流,以及出色的功率噪声比、极低的失调电压/漂移和1.8V 工作电压等众多优异特性。因此,该款 INA333器件能够在     

精密基准电压源LM4050

MAX6613是一种工作电压低、功耗低、封装尺寸小的模拟温度传感器。主要特点:工作电压1.8～5.5V;静态电流低,典型值7.5μA自热影响甚微;测温精度:O～50℃范围精度±1.3℃、-20～ 80℃范围精度±2℃、-55～ 100℃范围精度±2.4℃、100～ 125℃范围精度±2.8℃;测量范围-55℃～ 130℃;小尺寸5管脚SC70封装。     

一种超低静态功耗LDO的设计

介绍了一种采用0.35μm CMOS工艺制作的LDO电路。电路采用工作在亚阈值区的跨导放大器使得电路工作在超低静态电流下,因此实现了超低静态功耗和高效率性能。整个电路所占面积约为0.8 mm2,在典型工作状态下电路总的静态电流约为500 n A,最大负载电流为150 m A。电路输入电压为3.3 V~5 V,输出电压为3 V。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。