CC3000的胶囊内窥镜WiFi转发器设计

为了实现胶囊内窥镜的远程诊断及手持设备实时显示,研究并设计了基于CC3000的WiFi转发器。设计使用STM32F103控制CC3000转发nRF24L01+接收到的胶囊内窥镜图像数据。使用提出的转发器,从胶囊内窥镜获取的图像可直接传输给Android手机进行显示并保存,也可直接将图片上传到远程服务器,医生能远程实时地查看所获取到的图片。实验结果表明,转发器能稳定地转发胶囊内窥镜的图像,并实现所需功能,为胶囊内窥镜的远程诊断提供一种可行方案。     

主动式胶囊内窥镜系统设计

设计了一种新型的、基于无线供能的主动式胶囊内窥镜系统,包括胶囊内镜、主动运动、无线供能3个子系统。胶囊内镜子系统可实时获取、传输肠道内部的图像信息;主动运动子系统将微型电机的旋转运动转化为胶囊内窥镜的径向和轴向伸缩,并按照一定的时序配合实现仿尺蠖运动;无线供能子系统接收体外发射线圈产生的电磁场能,将其转换成电能,为整个系统提供能源。后续实验表明:主动式胶囊内窥镜可以运动、定位到肠道病灶点,进行主动式图像诊察,可克服已有胶囊内窥镜不能主动运动,仅靠胃肠蠕动来推动而造成的漏检、误检等缺陷。     

基于Android的老人智能监护系统的设计与实现

随着人口老龄化的不断加剧,对老人的智能监护显得尤为重要。结合无线传感网和蓝牙通信技术,设计了老人智能监护系统,系统数据采集模块采用CC2530芯片作为数据采集节点,在节点上附加温度传感器、心率传感器等模块,以此来获取老人的体温、脉博等相关信息,通过蓝牙通讯将信息传输至智能手机Android平台,手机对相关信息进行处理,然后通过Wi-Fi或4G将处理完成的老人监护数据传送至服务器,老人亲属可以通过平台了解老人的相关情况,对老人进行实时监护。通过实验测试系统达到设计目标,具有比较好的应用前景和可扩展性。     

固定话机也移动——苏迪思发布无线会议话机

4月3日获悉,苏迪思科技公司发布了为中国市场推出的BTC话机(蓝牙会议话机)。该话机可与多种SIP IP话机及移动话机兼容,是一款拥有众多功能的无线会议话机。据介绍,配有以太网和Wi-Fi组件的苏迪思SIP话机可以在无需通过任何连接线获取摸拟信号的基础上安装SIP添加会议话机。该话机配有标准的3.5毫米连接器(粉色和绿色),可与桌面型话机进行有线连接或与内置于PC中的软电话相连。BTC话机使用起来简便,可与任意款蓝牙话机配合使用,如苏迪思ZIP4x5话机。既可使用ZIP4x5或BTC话机进行语音拨号呼叫,也可在任意话机应答。通过特有的蓝牙…     

全球首款Wi-Fi鼠标 惠普Wi-Fi无线鼠标

惠普的WIFI无线鼠标,是全球第一款无线Wi-Fi鼠标。它不是采用我们熟悉的RF 2.4GHz传输技术,而是使用了Wi-Fi传输,从而可以同具有Wi-Fi无线模块的任意一台笔记本电脑连接,操作距离可达9米。它采用了激光传感器,并配备了5个自定义按键,除此之外,鼠标的滚轮还支持四向操作。鼠标本身不但支持Wi-Fi,还可通过USB线缆连接,一次充电可连续使用9个月,比蓝牙的鼠标使用时间增加一倍。     

基于CC3200及微信公众号的云家居交互系统

为了实现家居智能化,基于CC3200无线Wi-Fi微控制器、微信公众号及阿里云服务器设计了一款智能云家居交互系统,用户可通过微信公众号远程控制家居设备,并可获取传感器的状态。提出了系统总体设计方案,介绍了系统硬件组成,给出了CC3200微控制器、微信公众号和阿里云服务器的软件设计。实验测试表明,该系统运行稳定,用户体验较好,具有较高的应用价值。     

基于专利文献的胶囊内窥镜图像诊断技术进展

胶囊内窥镜所拍摄的图像通常由医生进行阅片获得诊断结果,为了便于医生诊断,对胶囊内窥镜拍摄的图像进行处理以辅助诊断具有重要意义。为了分析胶囊内窥镜图像诊断技术的发展现状,本文首先分析了胶囊内窥镜领域全球专利申请人分布,进而选取全球专利申请量最大的申请人作为分析对象,对其在胶囊内窥镜图像诊断方面的技术进行深入分析。通过本文的分析,希望有助于本领域人员进行胶囊内窥镜的研制。     

蓝牙与Wi-Fi网络互连方案的研究与设计

本文介绍了蓝牙技术和Wi-Fi技术以及它们的网络特点．分析了共存环境中蓝牙和Wi-Fi的干扰特性，总结了针时共存环境中干扰问题的几种解决方案。提出了蓝牙和Wi-Fi网络互连的协议栈模型．讨论了蓝牙／Wi-Fi网关的设计问题，并给出了一些有价值的结论。     

基于蓝牙技术的汽车数据采集系统研究

本文介绍了一种基于蓝牙技术的汽车数据采集系统,该系统主要由传感器、SMT32单片机和CC2540蓝牙芯片组成。传感器采集汽车数据,SMT32通过I2C获取传感器的数据,处理后将数据通过USB发送给蓝牙芯片。CC2540蓝牙芯片通过蓝牙技术将数据发送给用户手机终端。该系统具有功耗低,结构简单、传输距离远等优点。     

Wi－Fi——插上翅膀的局域网络

不需要电话线，也不需要网线,接入方便、使用简单，这一与蓝牙一样可在办公室和家庭中使用的Wi-Fi无线网络的新技术，频宽比蓝牙宽10倍，速度也比蓝牙快的多，现在它已成为无线局域网设备标准的代名词。▲Wi-Fi标志Wi-Fi是无线保真(wirelessfidelity)的缩写，其相关设备的工作原理与无绳电话一样，它可让1,500英尺内任何配有无线接收器的电脑、PDA、手机或笔记本等高速上网。虽然Wi-Fi诞生时间还不长，但技术发展却异常迅速，目前已有IEEE802.11b和IEEE802.11a规格，以及新出现的IEEE802.11g后续规格。世界著名IT软硬件生产商非常…     

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。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.