基于WIFI的农业物联网温室大棚环境监测系统的设计

针对现代农业温室大棚环境监测中存在的问题,设计了基于WIFI技术的农业物联网温室大棚环境监测系统。该系统由监控中心、WIFI基站、环境采集节点与视频监控构成。环境采集节点以STM32F作为主控器,采集温室大棚内光照度、环境温湿度、土壤温湿度等信息;视频监控采用有线与无线结合的方式;所得环境数据通过WIFI无线网络及光纤传回监控中心。设计了基于B/S架构的上位软件和基于C/S架构的移动终端环境监测软件来实现环境的监测与控制的下达。现场应用结果表明,所设计的环境监测系统网络结构简单、可靠性强、性能稳定。     

基于ARM和WIFI通信的智能开关控制器设计

针对新一代智能家居系统对于大量多功能、高精度自动化控制功能的需求,设计提出了一种基于ARM和WIFI通信的智能开关控制器。以WIFI无线通信技术为基础,用户通过使用Android智能手机或平板电脑等移动智能终端设备,借助设备上的客户端软件对被控设备如灯光照明系统等家居用电设备进行实时无线遥控。采用各种传感器模块对该控制器以及被控设备运行环境进行实时监测,用户可通过移动客户端软件查看了解相关情况。采用TFT液晶显示屏构建用户交互显示模块,对相关信息进行显示,方便用户的日常使用,增强用户的直观体验。通过实验测试,提出的基于ARM和WIFI通信的智能开关控制器达到了对被控设备的智能动态控制要求。该控制器具有结构简单、操作简便、响应迅速、控制功能多样化等优点,应用前景广泛。     

基于物联网的室内环境监测系统设计

为了有效的了解室内环境质量,利用物联网技术设计一种室内环境监测系统。该系统以STM32单片机为主控芯片,多个环境参数的传感器,WIFI模块以及语音报警。传感器采集到的环境质量参数通过WIFI发送到Onenet云平台,用户可以通过移动终端访问Onenet云平台实时查看当前的室内环境质量。通过软硬件设计测试,系统能够精确对室内环境各项参数进行精确监测同时可以及时的获取环境质量数据。     

嵌入式与物联网技术在温室监测系统中的应用

针对农业大棚环境信息采集的需要,设计了一套基于ZigBee网络技术与嵌入式技术的无线大棚环境监测系统。该系统实现了对大棚的土壤温度、空气湿度、光照强度及土壤水分等重要指标的自动采集与实时传输。无线传输部分选用射频模块CC2530完成,系统终端基于ARM7和嵌入式操作系统UCosⅡ进行设计。终端界面使用UCGUI编写,人性化的人机交互功能可以方便用户了解大棚环境信息、更改各项环境指标的报警值。     

基于网络的农业大棚温湿度自动监测系统设计

针对传统农业不能实时监测大棚内环境变化,缺少农业数据之间的交流的问题,设计了一种基于网络的农业大棚温湿度自动监测系统。该系统通过温湿度传感器采集大棚里的空气温、湿度和土壤湿度的数据,由STM8单片机使数据由模拟信号转换为数字信号,并通过MAX485进行多机通信,最后数据会上传到网络服务器。农户及相关人员可以通过微信公众号和网页来监测大棚内的环境变化,并根据环境变化提出有效的解决方案。设计较好的解决了由传统人工监测温度计变化而产生的偏差和疏漏,同时也为决策者提供了真实有效的数据信息。     

基于物联网的温室大棚系统设计

基于物联网的温室大棚系统,运用物联网系统的传感器设备,检测大棚的温度、相对湿度、光照强度、土壤水分、CO2体积分数等参数。通过Zig Bee无线传感器网络(WSNs)采集传感器的数据,传感器数据通过以STM32F103RBT6为核心设计的无线网关传输到远程监测中心。监测中心通过对接收到的数据进行分析,可对大棚环境进行短信预警通知,同时在PC或手机终端可以实时查询大棚状态,并远程控制大棚的浇灌器、通风天窗、外遮阳等设备,实现对大棚生态信息的自动监测和对设施进行自动控制的智能化管理。     

基于ZigBee的大棚环境监测系统设计

针对当前农业发展的需要,通过采用ZigBee与串口通信技术将温室信息实时传输到监测系统,使种植者可以及时了解大棚环境,并根据接收到的数据对大棚环境进行控制。以VB.NET开发上位机程序,用传感器接收温湿度数据,并通过ZigBee无线通信模块将信息通过串口传送给上位机,再由上位机监测软件完成数据的存储。对大棚中每一个节点的温湿度进行实时显示,当超出系统预先设定的温湿度期望值区间时,发出报警声音。实验说明,基于ZigBee的无线传感网络监测系统有着低功耗、小体积、使用简单方便等特点,更加适合现代化的农业发展。     

基于Android的教学质量监控应用研究

教学质量是高职院校发展的生命线,加强教学质量监控显得尤其重要。随着移动互联网的飞速发展,利用移动终端实现教学质量监控成为现实。在服务器端利用云计算技术,实现教学信息的云存储和快速计算技术,在客户端利用手机APP实现对课程教学信息、学生反馈信息、专家评价信息迅速反馈的功能,利用智慧校园网WIFI校园全覆盖的优势,让教学质量评价、监控成为随时随地可便捷操作,为高职院校教学质量提供实时、动态、高效的监测。     

基于车载GPS终端的城市环境健康监测平台设计

针对当前应用的空气质量监测系统定点、定时监测存在的范围局限、实时性差等问题,设计并研发了基于车载GPS终端的城市环境健康监测平台系统。系统包括车载环境感知节点、数据服务中心和PC监测终端。以STM32为主处理器的环境感知节点采集SO2、PM2.5、温湿度等空气质量信息,通过SIM5320模块获取节点的实时位置信息并与数据服务中心进行数据通信。PC监测终端可实时查看节点当前位置的空气质量状况,并绘制区域空气质量分布监测云图。系统实时准确地监测环境质量状况,弥补了当前宏观环境监测的不足,为有效控制污染及解决环境问题提供了有力参考。     

基于STM32处理器的蔬菜大棚监测终端设计与实现

设计和实现一个基于STM32处理器的蔬菜大棚监测终端系统。该系统具备实时监测蔬菜大棚环境参数的功能,并通过通信模块将数据上传至云服务器。通过硬件设计、软件开发及数据处理和通信配置,建立了一个完整的监测系统。这个系统有望提高农户对蔬菜大棚的管理效率,促进农业生产的发展。     

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.