基于Android的3G手机航空订票系统的设计与实现

通过研究、分析Android技术、3G无线网络通讯技术和移动智能操作系统技术,设计3G手机航空订票系统,能够为用户提供实时航班信息以及订票的相关服务,用户能随时随地进行航班的查看、订票等业务。系统采用C/S架构及MVC设模式,可以有效地把数据的访问和数据的处理有效地分离,使得系统具有良好的扩展性和可维护性。MD5加密算法使系统的数据库安全性大大提高。     

一种基于J2EE的火车订票系统的设计

火车网上订票系统是通过网络查询信息,进行火车票的预订、购买、支付的电子商务系统。订票在购票交易过程中扮演着十分重要的角色。系统深入探讨了J2EE应用系统开发过程及其相关技术,提出了订票系统解决方案,在此基础上重点解决了系统体系结构、订票篮设计及系统安全三个关键问题。     

基于B/S结构的航空预订票系统的设计与实现

B/S网络结构模式在互联网中,用户不必安装任何客户端程序就能进入系统,服务器便能迅捷地回应客户指令。现以B/S模式为基础,用Visual Basic作为开发语言,Microsoft Access作为后台数据库设计航空预订票系统,该系统有四个功能模块,包括登录、订票管理、退票管理和系统重置。使顾客能及时了解机票出售情况,可在网上使用信用卡购买电子客票,做到异地出发,本地订票、取票。该订票系统功能的核心部分集中到服务器上,有利于系统的维护和使用。     

电影院订票系统的设计与实现

目前,大多数影院仍然采用人工售票方式,针对人工售票效率低下问题,基于B/S开发模式,采用Node.js的Express框架,结合MySQL数据库设计开发了一款影院订票系统APP,实现了用户进行电影选座、购票、评论,管理员进行用户管理、电影管理、影院管理、影厅管理、电影排片、评论管理、订单管理等功能.经过系统测试,该系统...     

生活“网”前走

这个冬天,无论你是要出门远行,或是探家访友,你不必再为了得到它——一张小小的火车票而在睡眼惺忪的时候就走出家门,在三九天的凛冽寒风中,排上三四个小时的队了。从今年元旦开始,北京铁路局开展了网上订票业务,“铁老大”也赶了回“网上时尚”。从来没有过网上购物的经历,好奇心促使我上网看了一下这套北京铁路客票中心订票系统。在这套系统中,用户可以查询实时客票余额和票价等信息,还可以进行网上订票。进入网上订票选项后,首先会出现一个说明窗口,上面详细说明了此系统的功能、使用步骤和注意事项。即使计算机操作不熟练的用户通过这个说明也     

网上订票系统分析与设计

基于Web的订票系统是通过网络查询信息,进行火车票的预订电子商务系统。订票在购票交易过程中扮演着十分重要的角色,设计和实现一个完整的基于Web的订票系统能够为旅客提供一个快捷、便利的购票渠道,对促进交通旅游票务事业的发展具有十分重要的意义。     

易行天下B2G系统强势上线

上海7月1日电／新华美通／-2008年7月1日,中国领先的电子客票交易平台-易行天下（Yeexing．com）强力推出个性化的易行天下B2G系统group．yeexing．com（VIP电子客票在线预订系统）,首次为易行天下分销商特别订制系统操作环境,便于他们向企业用户提供更专业的“一站式”订票服务,是一次对企业传统差旅管理方式的革命。作为B2G订票系统的先行者之一,易行天下的B2G系统界面只显示分销商信息,域名独立,着力为分销商实现专属于自己的专业B2G订票网站,并致力为其创造高额回报。     

基于用户行为分析的在线订票系统缓存优化策略研究

 随着互联网和移动终端技术的快速发展,越来越多的用户通过互联网渠道查询和订购机票。为了减轻大量用户访问给在线订票平台带来的巨大后台查询压力,对余票（即机票库存）和票价信息进行缓存逐渐成为各在线订票系统普遍采取的措施。缓存机制中的一个关键问题是如何设置查询关键字的缓存有效时间（TTL）。本文提出一种基于用户查询行为分析的缓存优化策略,通过大量用户的查询记录来挖掘机票的库存变化规律,预测库存变化时间间隔,从而动态地设置TTL。在某在线订票网站的真实查询行为数据集上进行了实验,表明本文提出的方法在保证查询结果准确率的同时,能够极大地提高缓存命中率。     

基于网络的火车售票系统

基于网络的火车售票系统是通过网络查询信息,进行火车票的预定、购买、支付的信息管理系统.订票在本系统中扮演着十分重要的角色,设计和实现一个完整的基于网络的基于网络的火车售票系统能够为旅客提供一个快捷、便利的购票渠道,对促进火车票务事业的发展具有十分重要的意义.本系统采用模块化程序设计方法,既便于系统功能的各种组合和修改,又便于未参与开发的技术维护人员补充、维护.本系统主要包括管理员管理模块、业务收费班次票单管理模块、用户注册模块、票单订购模块.最终实现了管理员对车次的添加、删除、修改,客户进行网上查询、订票、退票等功能.     

基于网络的火车售票系统

基于网络的火车售票系统是通过网络查询信息,进行火车票的预定、购买、支付的信息管理系统。订票在本系统中扮演着十分重要的角色,设计和实现一个完整的基于网络的基于网络的火车售票系统能够为旅客提供一个快捷、便利的购票渠道,对促进火车票务事业的发展具有十分重要的意义。本系统采用模块化程序设计方法,既便于系统功能的各种组合和修改,又便于未参与开发的技术维护人员补充、维护。本系统主要包括管理员管理模块、业务收费班次票单管理模块、用户注册模块、票单订购模块。最终实现了管理员对车次的添加、删除、修改,客户进行网上查询、订票、退票等功能。     

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.