PDA的窗口系统的结构模型与实现

ＰＤＡ（Ｐｅｒｓｏｎａｌ Ｄｉｇｉｔａｌ Ａｓｓｉｓｔａｎｔ）有关显著不同于台式微机的特点。这些特点对窗口系统的结构模型会产生很大的影响。ＬＫＭ（Ｌｏｏｋ Ｋｅｒｎｅｌ Ｍｏｄｅｌ）是一个针对ＰＤＡ的特点提出的窗口系统结构模型，它由界面视感层、窗口核心层、设备接口层、编程接口和系统接口等几个部分组成。ＰＤＡＷ是一个参照ＬＫＭ模型实现的窗口系统。该系统以一个微内核结构的操作系统作为运行平台。     

PDA软件设计与开发方案研究

PDA又称个人数字助理,掌上型电脑(全写为personal digital assistant).本文主要研究在PDA上面进行软件设计与开发适应于哪种方案,通过对两种方案的优缺点分析,从提高开发效率,减少系统资源开销的角度对两种方案进行对比,最终确定第二种方案作为开发软件的最终方案实施,然后详细从三个角度描述了选用第二...     

基于Multi-Agent的虚拟企业集成框架研究

本文采用多智能体技术构建虚拟企业集成框架 ，在该框架中，由agent代表各成员企业，相应地，多智能体系统(Multi-Agent System)代 表虚拟企业．其中重点提出了agent通用结构，它包括核心层、接口、通讯层三个组成部分 ：核心层由企业的原有系统构成，以保证企业的自治性；接口实现了agent核心层与通讯层 之间的信息交换；通讯层则支持agent之间的交互，实现企业间的合作．该虚拟企业集成框 架不仅支持虚拟企业像一个企业一样进行工作，而且实现了虚拟企业的可重用、可重构和可 扩充，并使企业根据需要同时参加多虚拟企业成为可能．     

集成智能大厦管理系统IBMS的设计

针对现有的楼宇管理系统存在着信息共享程度低，开放性和可扩展性差等问题，本文提出并实现了一种基于CORBA平台的开放分布式智能大厦管理系统体系结构，它由界面层，业务相关的核心服务层和通用的协议转换网关层组成，界面层提供用户使用系统的GUI界面或基于Web页面来访问系统的方式；核心层由一组智能建筑行业通用的服务组成，协议转换网关提供与各控制设备子系统和各种第三方应用软件的通用接口，这 体系结构以信息的交换和共享为中心，采用ORB作为软件总线，为智能建筑的各控制设备子系统和各种第三方应用提供了统一的互操作的接口，对智能建筑业的发展和标准化有重要的意义。     

立体动态窗口界面特技程序设计方法

对用户来说,一个完整的应用系统窗口设计(用户界面)要有一定规范,即在整个系统中窗口特色要保持相对一致。故有个通用窗口界面对用户来说很重要,而对程序员来说则是个难得的设计助手。下面介绍窗口特技程序设计思想,大家只要将源程序输入到计算机即可在应用程序中带参数直接调用。 1.窗口的类型 在应用系统的设计中经常使用的窗口类型可以大致分为简易型、特艺型;所谓简易型是指直接用单     

基于PDA的电力物资到货管理信息系统

提出一种电力物资到货管理信息系统。在省级电网公司的企业资源计划(enterprise resource planning,ERP)架构下,基于掌上电脑技术(personal digital assistant,PDA)实现对物资到货的精密管理,信息系统包括催交、配送、现场管理、废旧处置等应用功能模块,以及系统平台设计和用户信息管理、权限分配等功能。实践结果表明,该系统切实可行,对于推动物资管理领域管理创新和信息化研究具有重要的参考意义和应用价值。     

一种并行内存缓冲系统及其实现技术

为支持数据挖掘应用,对NOW机群系统的分布式共享存储管理机制进行了适当的简化1～2,结合数据挖掘中数据处理的特点,设计了一个并行内存缓冲系统。该缓冲系统为应用程序提供上下两层应用接口,既可以保证内存操作的透明性,又为应用程序自主操作数据提供了极大的灵活性。缓冲系统可以充分利用网络结点的存储空间为应用程序实现网络虚拟存储环境,同时也可以很好地支持应用程序对数据文件的并行化处理。     

便携式——PC个人化的大趋势

个人计算机(PC)从台式到便携式的发展,从某种意义上可以说,这才是真正体现了个人机“个人化”的大趋势。 在便携式电脑这个新家族中,新成员迅速繁衍,“个人数字助手”(personal digital assistant,PDA)、笔式电脑、掌上型电脑、亚笔记本型(subnotebook)电脑、笔记本型(note book)电脑等竞相发展,好一派兴旺景象！     

基于数据驱动的软件自动化测试框架系统的研究与实现

基于三层数据驱动机制的自动测试框架系统可以支持用户自定义控制码和验证点。灵活的关键字规则定义、测试粒度控制方式以及测试数据使用方式使得自动测试框架系统易扩展易维护,并且能应用到不同应用程序的自动测试项目(尤其是采用增量式开发的应用程序的自动测试项目)中支持不同类型的测试。     

A Dataflow-Oriented Programming Interface for Named Data Networking

从除一个地点驱动的模式以外的一个数据驱动的通讯模式继承,命名数据联网(NDN ) 把更好的支持提供给网络层 dataflow。然而,应用程序开发者不得不处理复杂任务,例如数据分割,包确认,和流动控制,由于在网络层上的合适的运输层协议的缺乏。在这研究,我们设计一个 dataflow 面向的编程接口为 NDN 提供运输策略,它极大地在开发应用程序改进效率。这个接口介绍检索策略根据出版模式,基于当前的网络地位和数据产生控制 dataflow 在采用一个适应 ADU pipelining 算法的不同数据评估的二个应用程序数据单位(ADU ) 。接口也提供网络测量策略监视许多影响应用程序表演的批评度量标准。我们由实现流的一个录像验证我们的接口的功能和性能在世界范围的 NDN 试验床上跨越 11 个时区的申请。我们的实验证明接口罐头高效地支持开发高效、驾驶 dataflow 的 NDN 应用程序。     

Adaptive user modelling in intelligent telephone and email assistants

With the burgeoning complexity and capabilities of modern information appliances and services, user modelling is becoming an increasingly important research area. Simple user profiles already personalise many software products and consumer goods such as digital TV recorders and mobile phones. A user model should be easy to initialise, and it must adapt in the light of interaction with the user. In many cases, a large amount of training data is needed to generate a user model, and adaptation is equivalent to retraining the system. This paper briefly outlines the user modelling problem and work done at BTexact on an intelligent personal assistant (IPA) which incorporates a user profile. We go on to describe FILUM, a more flexible method of user modelling, and show its application to the telephone assistant and email assistant components of the IPA, with tests to illustrate its usefulness.     

应用于PDA的MCU接口的设计与实现

介绍了一种应用于PDA系统中的可支持多种类型MCU的接口的设计与实现。采用对不同MCU信号总线使用独立处理通道的设计思想，设计接口支持多达八大类的MCU，同时达到其高速的要求(最高100M)。着重介绍了Motorola的MC68K2接口，它具有一定的共性。对所设计的电路进行了仿真，得到了很好的仿真结果，并通过了FPGA的验证。     

SoundWorks: an object-oriented distributed system for digital sound

SoundWorks, an object-oriented distributed system that lets users interactively manipulate sound through a graphical interface, is discussed. The system handles digitally sampled sounds as well as those generated by software and digital signal processing hardware. An overview of the different types of sounds and window interfaces provided by SoundWorks and of the operations that modify these sounds is presented. The high-level architecture and the design of the SoundWorks system the protocol defined between the user interface code and client application, and the sound kernel specification that manages sounds and lines, performs operations on sounds, and interfaces to the digital hardware are described. The NEWS application programming environment, which provided the necessary primitive graphic items for a graphical window-based interface and offered an object-oriented approach for development of the SoundWorks system, is also discussed     

基于PDA的在线签名鉴别系统的设计与实现

设计并实现了一个基于PDA的在线签名鉴别系统，用于PDA的开机保护。根据PDA对于内存和运行速度的要求，选择位置和速度作为特征，改进的动态归正方法作为匹配算法，并且在Windows CE操作系统上实现了这一系统。该系统简单而高效，在错误接受率为0％的前提下，错误拒绝率仅为5％。     

User interaction in digital libraries: coping with diversity through adaptation

User interface adaptations can be used to address several user interaction challenges in the development of digital library systems. This paper: (a) examines some of the intrinsic characteristics of digital library systems; (b) identifies some of the key Human–Computer Interaction (HCI) challenges in relation to design and architectural abstraction for user interfaces to digital library systems; and (c) develops an argumentation for adaptations in digital library systems. By drawing parallels to recent HCI research into adaptable and adaptive user interaction, the paper illustrates potential areas in which user interface adaptation can provide a useful technique for advancing the quality of human interaction with a digital library system. Received: 18 December 1998 / Revised: 31 May 1999     

A Study in Efficiency and Modality Usage in Multimodal Form Filling Systems

The usage patterns of speech and visual input modes are investigated as a function of relative input mode efficiency for both desktop and personal digital assistant (PDA) working environments. For this purpose the form-filling part of a multimodal dialogue system is implemented and evaluated; three multimodal modes of interaction are implemented: ldquoClick-to-Talk,rdquo ldquoOpen-Mike,rdquo and ldquoModality-Selection.rdquo ldquoModality-Selectionrdquo implements an adaptive interface where the system selects the most efficient input mode at each turn, effectively alternating between a ldquoClick-to-Talkrdquo and ldquoOpen-Mikerdquo interaction style as proposed in ldquoModality tracking in the multimodal Bell Labs Communicator,rdquo in Proceedings of the Automatic Speech Recognition and Understanding Workshop, by A. Potamianos, , 2003. The multimodal systems are evaluated and compared with the unimodal systems. Objective and subjective measures used include task completion, task duration, turn duration, and overall user satisfaction. Turn duration is broken down into interaction time and inactivity time to better measure the efficiency of each input mode. Duration statistics and empirical probability density functions are computed as a function of interaction context and user. Results show that the multimodal systems outperform the unimodal systems in terms of objective and subjective criteria. Also, users tend to use the most efficient input mode at each turn; however, biases towards the default input modality and a general bias towards the speech modality also exists. Results demonstrate that although users exploit some of the available synergies in multimodal dialogue interaction, further efficiency gains can be achieved by designing adaptive interfaces that fully exploit these synergies.     

基于层次模型的智能数据挖掘框架及其模型

在层次模型的基础上，提出了一个智能数据挖掘的开发框架，包括问题识别层、任务层、应用层和用户层等多层概念。在这个框架中，建立了一个智能数据挖掘模型，它由4个层次和11部分组成，其中中央处理单元、辅助选择、数据库交互平台和功能组合平台共同构成一个中间智能件。     

面向普适计算环境的嵌入式系统研究

服务提供与用户界面自适应问题是普适计算中的重要研究课题。嵌入式系统提供的服务对普适计算的服务起到了重要的支持作用;普适计算任务要获取用户的服务也需要自适应的用户界面来显示服务项目,嵌入式系统的自适应界面是合适的选择。但是,传统的嵌入式系统服务软件不能很好地实现上述目标。针对传统嵌入式系统服务模型的不足,首先总结了面向普适计算的嵌入式系统硬件结构,并将这种结构命名为计算元。随后提出了一种新的嵌入式系统服务提供模型,统一了用户上下文交互的标准信息格式。最后研究了该服务模型的实现。     

基于封包截获技术的个人防火墙核心驱动技术

针对多数防火墙防外不防内的致命缺点,提出了一种双重过滤设计方案：在内核模式下用TDI虚拟驱动接口挂接技术实现对通过传输层的数据封包截获,在应用模式下采用Winsock 2 SPI技术实现对基于Socket网络连接通信的服务截获,克服了单方面截获数据包的缺点。介绍了核心层虚拟驱动编程技术。     

Ontology-Based User Modeling in an Augmented Audio Reality System for Museums

Ubiquitous computing is a challenging area that allows us to further our understanding and techniques of context-aware and adaptive systems. Among the challenges is the general problem of capturing the larger context in interaction from the perspective of user modeling and human–computer interaction (HCI). The imperative to address this issue is great considering the emergence of ubiquitous and mobile computing environments. This paper provides an account of our addressing the specific problem of supporting functionality as well as the experience design issues related to museum visits through user modeling in combination with an audio augmented reality and tangible user interface system. This paper details our deployment and evaluation of ec(h)o – an augmented audio reality system for museums. We explore the possibility of supporting a context-aware adaptive system by linking environment, interaction objects and users at an abstract semantic level instead of at the content level. From the user modeling perspective ec(h)o is a knowledge-based recommender system. In this paper we present our findings from user testing and how our approach works well with an audio and tangible user interface within a ubiquitous computing system. We conclude by showing where further research is needed.