Recommendation system for localized products in vending machines

This paper proposes a framework of localized product recommendation system for automatic vending machines applications. The goal is to offer suitable recommendations of localized products to customers in distinct locations. We develop a hybrid technique that combines a meta-heuristic approach, clustering technique, classification, and statistical method. In the approach, an intelligent system is implemented to analyze product attributes and determine localized products based on the transaction data. To prove the feasibility and effectiveness of proposed approach, we implemented the system in several automatic vending machines owned by an information service company of Taiwan. Nine machines were selected and compared from two locations: living lab by Institute for Information Industry of Taiwan at Song-shan District and business office building at Nei-hu District in Taipei. The real life experiments showed that the profit of vending machine increases after applying our system.     

一种遵循欧洲自动售货机协议的监控系统设计①

目前我国自动售货机远程监控系统数据传输协议格式不统一,各个厂商的管理平台之间没有兼容性。针对这种现状,研究并设计一种基于EVA—DTS和GPRS的自动售货机监控系统方案。利用GPRS实现售货机与监控中心的组网,采用EVA—DTS建立数据的格式,设计并实现了实时的、安全度高的监控系统。该系统能够保障自动售货机与数据中心稳定的通信,便于运营者的运营和管理。任何符合EvA—DTS的售货机都可以用该系统进行管理,具有很强的通用性。     

基于ARM的自动售货机主控制器的设计与开发

自动售货机是一种高智能化产品,顾客可以在完全自助的方式下,实现商品的挑选、获取和货币的支付。目前市场上传统的自动售货机大部分没有连接网络,都是单机运作。研究和实现自动售货机与网络的连接,使交易信息能实时发送到后台服务器,并且当售货机出现缺货、发生故障时,管理人员能及时监控到这些信息并进行相应的处理,大大节约了人力劳动,极大提高了工作效率。     

Eliciting positive user experiences with self-service kiosks: pursuing possibilities

Although the prominent concept of the last decade – user experience – maintains its significance in diverse disciplines, especially design, its focus has changed to eliciting positive user experiences by pursuing new possibilities for consumer products rather than by solely seeking solutions to existing problems. Designers continue to aim for rich user experiences with a variety of products, but have neglected self-service (interactive) kiosks. Hence, this paper, after giving a brief overview of the positive psychology literature, demonstrates the dimensions of positive user experiences with self-service kiosks through an empirical study conducted on coffee vending machines and automated tellers.     

关于Dex/Ucs自动售货机的通信研究①

介绍了基于Dex/Ucs自动售货机通信系统,并根据Dex特点及其通信原理,在Vb6+Borland平台上,实现了终端与售货机间通信及数据的采集。此系统的核心为终端与系统间的通信,根据Dex会话层的三次握手来实现通信双方的连接,其中所传输数据遵循Dex协议的格式被封装。系统基于Vb6+C的模式,利用两者的优势被实现。     

基于CDMA网络的售货机远程监控系统设计与实现

针对自动售货机的单机运营模式的缺陷,提出了联网实时监控的实施方案。通过对售货机情况和消费者习惯的分析,与实际无线网络的结合,制定了消息传输应答措施和界面查询系统。能通过CDMA网络监测售货机的联网状态,跟踪销售和运行状况,并且通过与数据库的结合,方便了维护人员补货和消费者查询,使售货机系统运作更稳定,用户消费更快捷。着重介绍了该监控系统的系统组成和实现的关键问题。     

关于Dex/Ucs自动售货机的通信研究①

介绍了基于Dex／Ucs自动售货机通信系统,并根据Dex特点及其通信原理,在Vb6＋Borland平台上,实现了终端与售货机间通信及数据的采集。此系统的核心为终端与系统间的通信。根据Dex会话层的三次握手来实现通信双方的连接,其中所传输数据遵循Dex协议的格式被封装。系统基于Vb6＋C的模式,利用两者的优势被实现。     

基于容器技术的云计算资源自适应管理方法

云计算的发展使得越来越多的软件应用选择云平台作为部署平台。为了应对动态变化的工作负载、应用场景和服务质量目标,应用提供商希望能以一种可伸缩的方式对云计算资源进行动态调整。基于虚拟机的资源管理较为重载,难以实现细粒度的资源动态调整与混合云中跨平台的服务快速迁移。容器技术在一定程度上弥补了虚拟机的不足,然而传统的资源管理方法在诸多方面并不十分适用于容器技术。针对这一问题,提出了基于容器技术的云计算资源自适应管理方法,设计了更适用于容器的资源架构方案与资源之间的调度方式。与传统的线性建模方法不同,所提方法使用非线性函数对云计算资源进行更加精确的建模,同时用遗传算法进行参数调优,使得自适应调整响应更快、总体性能更好。所提方法还针对不同容器多维度的异构性,合理分配容器部署位置,提高物理资源利用率。此外,所提方法结合了容器技术多方面的底层特性,在分配负载等方面进行适应性调整。最后通过实验分析初步确认了所提方法的有效性。     

基于IC卡支付的GPRS网络自动售货机的设计实现

针对目前自动售货机都存在的只能接受硬币和小额面值钞票的缺点,提出采用智能IC卡与GPRS网络通信技术相结合的方案,并在此基础上设计了基于IC卡支付的无线网络自动售货终端。它包含了自动售货机终端的硬件设计与软件设计两部分。采用MDB总线与自动售货机控制器通讯。实际应用证实了其可行性,在自动售货业有广泛的应用前景。     

Human error identification techniques applied to public technology: predictions compared with observed use

In this paper, we consider the use of human error identification (HEI) techniques as a possible alternative to observation studies for product evaluation. The HEI techniques used were Task Analysis for Error Identification (TAFEI) and Predictive Human Error Analysis (PHEA). The comparison was undertaken in connection with the prediction of errors in the use of a ticket vending machine. Two main findings emerged from the study. First, predictions derived from the HEI techniques compared favourably with errors observed in actual machine use. Second, the HEI techniques took far less time than direct observation to reach comparable levels of performance. Such rates suggest that these techniques can be usefully applied to the study of consumer products.     

自动零售传媒系统的研究及IC卡自助充值功能的实现

目前,国内自动售货机还存在一些不足,多媒体传输不具备高清视频处理能力,IC卡不能自助充值。针对这一现状,研究设计一种基于ARM11处理器的具有高清视频处理播放,远程控制和IC卡自助充值等功能为一体的新型自动售货系统——自动零售传媒系统。本文详细讲解了系统的结构框架和实现IC卡自助充值功能的关键技术,并对系统进行测试,给出结论!     

Decision making of vending machine users

This article discusses two possible solutions to decision making about controls by users of vending machines: the 'one button to press' system (requiring a compound decision - the pressing of one button only); the 'several buttons to press' system (requiring a compound decision - the pressing of several buttons). The basis for the discussion is a field evaluation of a train ticket vending machine (TVM) that can sell 800 different types of tickets and can accept all kinds of payment. For this evaluation several hundred TVM users and ticket window users were observed and interviewed. Special attention was paid to the errors which were made.     

移动支付在地铁互联网售票机系统中的应用

为丰富乘客的购票支付方式,提高出行体验,地铁自动售票机(TVM)系统引入移动支付功能具有一定的必要性。本文分析地铁互联网售票机的软件系统框架,对移动支付功能进行设计,提出移动支付与地铁自动售票机的结合形式和工作流程。根据本方案设计的互联网售票机已经应用到南京地铁自动售检票(AFC)系统中,通过测试验收,验证了该方案的可行性,对其他城市的地铁自动售票机移动支付功能的开发有着一定的参考意义。     

大规模网络中Internet蠕虫主动防治技术研究--利用DNS服务抑制蠕虫传播

Internet蠕虫爆发后,在大规模网络中,由于易感主机和被感染主机数量很多,构成了良好的蠕虫生存环境。实践证明常用的路由封堵、控制策略只在蠕虫爆发初期有效,在长时间的封堵后,网络中仍然存在大量被感染主机,这些主机不停活动,攻击其它易感主机。文章提出利用DNS服务疏导被感染主机访问告警服务器的方法,及时通知被感染主机的使用者对本机采取相应处理措施,从而达到在网管人员和用户共同配合下迅速消灭蠕虫的效果。该文详细给出了利用DNS服务针对网络中被感染主机进行疏导的系统设计与实现。通过对清华大学校园网实施后的数据统计分析,证明这种方法是快速有效的。     

网络环境下高性能计算的可视化

本文介绍了在“先进计算基础设施”环境中实现科学计算可视化的方法 .该环境对可视化提出了较高的要求 :一方面 ,客户是通过 Internet观察这些结果的 ,没有事先安装任何软件 ;另一方面 ,高性能计算结果的可视化数据规模又非常大 ,必须用动态三维图像展现 .因此 ,传统的可视化手段难以同时满足这两个目标 .本文基于 Java的 Java 3D建立了三维可视化环境 ,实现了从 Internet自动安装用户端运行环境 ,并能通过传输控制三维模型的代码 ,在用户端快速生成可视化图像 ;同时 ,结合 Applet与 Servlet交互技术 ,在用户观察当前可视化结果的同时 ,分解传输有效数据来控制三维模型后续的运动 ,使跨网可视化的动态效果接近于本地运行的水平 .     

Improving the virtualization of rich applications by combining VNC and streaming protocols at the hypervisor layer

Virtual desktop infrastructure (VDI) solutions seek to provide a satisfactory user experience at the client side when accessing remote desktop applications, even from mobile devices with limited capabilities. This paper presents a new approach, improving on previous work by the authors, in which a combination of Virtual Network Computing (VNC) and streaming protocols allowed efficient remote web access to virtualized applications within a cloud architecture. The new approach simplifies virtual machine templates, from which virtual machine instances are deployed, by centralizing software modules, greatly simplifying their management. Our new contribution consists of an integrated solution with specific WebM video encoding modules in charge of application visual output processing, an Hypertext Transfer Protocol (HTTP) streaming server, and a VNC server. The solution can be installed in the hypervisor of the host machines instead of replicating the servers and modules throughout the guest (virtual) machines that run the virtualized applications. Consequently, their implementations are unique and independent of the operating system of the virtual machines. In short, it is not necessary to provide different implementations for different operating systems, which reduces the complexity of virtual machine templates and greatly simplies platform management. To demonstrate our solution, we have modified the Quick Emulator (QEMU)‐Kernel‐based Virtual Machine (KVM) hypervisor source code accordingly. We also present qualitative and quantitative analyses that demonstrate that the new approach is advantageous in terms of software management and quality of experience, compared with our previous work and other well‐known thin clients, contributing to the enhancement of VDI systems. Copyright © 2015 John Wiley & Sons, Ltd.     

基于网络的分布并行虚拟计算机的实现

构造了一个基于网络的分布并行虚拟计算机DPVM,它由虚拟机层、通信层和基本类层组成,包括服务器,工作机和客户机3种不同类型的机器,在简要介绍DPVM的总体结构之后,从服务器,任务通信,程序输出和消息传递并行语义的面向对象实现几方面对系统实现的关键技术进行讨论。     

一种实用、高效的虚拟远程超级计算环境

远程计算是指用户在本地计算机上通过互联网利用远程超级计算机上计算资源的技术.传统的远程计算方式是用户通过telnet协议登录到远程机器上完成各项任务.这种方式在高速、稳定的网络环境下效率是很高的.但是当网络条件比较差时,如在低带宽、不稳定的网络上,这种方式会严重影响用户的工作效率.提出并实现了一个远程虚拟计算环境,它所采用的计算方式可有效完成在低带宽、不稳定的网络环境下效率较低甚至无法完成的远程计算,其中使用了如检查点设置/恢复、压缩传送、目录树传送等技术以达到尽量减少网络流量的目的.实践证明,这在我国当前的网络条件下是一种高效的远程计算方法.     

Approach to derive golden paths under time-varying machine performance in multistage manufacturing process

In a multistage manufacturing process, identical machines are utilized at each process stage. According to such configuration, each product can go through a different process path (hereafter referred to as path) during production. In practice, however, machines at a process stage may have different operational performances, and thus the quality of the final product may vary depending on the path. This research proposes an approach to derive the golden paths (GPs), which are expected to produce products of higher quality than the user-defined quality level, when the machine performance degrades over time. To this end, the health indicator (HI) of a machine, which represents its performance at a certain time, is introduced to reflect the performance degradation. In deriving GPs, the proposed approach discovers a specific set of machine sequence patterns (MSPs), sequential combinations of machines in different process stages, satisfying several rules. Based on the discovered MSPs and the HI information, the proposed approach generates the GPs at a particular future point in time. The viability of the proposed approach is evaluated through simulated experiment. The derived GPs reflecting machine performance degradation over time are expected to contribute in increasing the production of superior quality products and reducing the re-production costs incurred by utilizing non-GPs.     

自动售货机手机刷卡支付系统

应用手机RF—UIM卡技术,结合CDMA无线通信技术,设计自动售货机的手机刷卡支付系统。在取代原始售货机硬纸币支付的同时,实现售货机联网监控的功能;主要结合RF—UIM卡刷卡模块搭建刷卡平台,实现自动售货机手机刷卡支付。实验验证了该设计的可行性,在自动售货机行业具有广泛的应用前景。