基于多线程技术的天线实时测量系统

建立了一套基于多线程技术的天线实时测量系统。实时测量系统具有很高的实时性要求,多线程技术以其能同时执行多项任务、最大程度利用多处理器性能的独特优点很好地满足了这一要求。系统软件用户界面可以完成所有测量参数的输入和设置并及时响应用户操作,除此线程外建立额外的工作者线程实现其他功能的并行工作,提高系统实时性,在用户界面实时更新显示仪器的运行状态和系统的测量进度以供用户了解系统状态,同时对测量数据进行实时地读取和保存,便于后期的进一步处理和研究。     

Design and development of a digital farmer field school. Experiences with a digital learning environment for cocoa production and certification in Sierra Leone

This article reports on the design and development of the Digital Farmer Field School (DFFS). The DFFS offers a tablet-based digital learning environment for farmers and extension agents for knowledge sharing and knowledge co-creation. It provides an alternative to conventional agricultural extension training and monitoring. The prototype DFFS applies Farmer Field School (FFS) learning principles and is designed and developed following user experience (UX) design principles and user interface (UI) design principles from a responsible innovation perspective, using existing FFS material and tailored films which support and enrich the content. The prototype DFFS has been tested in Sierra Leone to assess its success in providing a substitute for face-to-face voluntary sustainability standard certification training for cocoa farmers. Results show that the DFFS as an off-line, telephonically connected and regular on-line updated learning platform offers an appropriate environment in which collective and individual learning is stimulated and facilitated. The DFFS prototype was socio-culturally and technologically appropriate and fitted the operational and strategic communication skills of cocoa farmers and other value chain stakeholders. Films capturing the testing are available as additional learning media.     

The micro-reactor testing of catalysts and fuel delivery apparatuses for diesel autothermal reforming

This study investigated two factors affecting the performance of diesel autothermal reforming (ATR): the reforming activity of selected catalysts and the effect of devised fuel delivery apparatuses. When fluorite and perovskite-structured ceramic materials were used as substrates, H₂ yields were higher than when an inert Al₂O₃ substrate was used at 700–800 °C. Gadolinium (Gd)-doped CeO₂ (CGO) had the highest H₂ production rate in the selected substrates. Platinum (Pt) showed better performance than rhodium (Rh) and ruthenium (Ru) when CGO was used as the substrate. Although the nickel (Ni)-added Pt catalyst (Pt–Ni) showed high H₂ yield, carbon deposition over this catalyst was more severe than with Pt. Oxygen ion (O²⁻) vacancies generated by Gd dopants can enhance the reforming activity of CeO₂. When using a microchannel catalyst bed, the performance degradation at high gas flowrates can be compared to a packed catalyst bed of pellet type. For effective fuel delivery, we have introduced an ultrasonic injector (UI) and a plasma injector (PI). The UI-reforming showed greater long-term stability than non-UI reforming because the generation of carbon precursors was suppressed. On the other hand, the PI-reformer had low conversion efficiency, although it had high H₂ selectivity.     

支持用户界面自动生成的界面模型

为实现软件用户界面的工程设计,论文提出了一种支持用户界面自动生成的界面模型FMP。它利用功能模型(F)和对象模型(M)捕捉与界面相关的功能和数据信息,用交互模型(M)表达这些信息和控制关系。然后依据交互模型的描述,利用表示模型(P)建立内部对象和外部显示元素的对应关系,规划界面布局,从而指导实现用户界面的自动生成。     

Windows多线程应用程序设计技巧

本文简述了如何在Ｗｉｎ３２的平台上实现多线程应用程序设计的方法,主要论述了以下几个关键性问题,主线程与任务线程互相传递数据,多线程的同步控制问题实现,多线程阻塞和临界区域。     

基于对象树的OSD UI平台设计与实现

随着OSD在嵌入式领域的广泛应用,需求与业务流程的频繁变更以及代码工作量不断提高,使构建一个统一的OSD界面开发平台非常重要。利用MFC消息回调机制思想设计OSD消息响应机制,采用组合设计模式结合STL容器形成对象树,设计并实现一种基于对象树的OSD UI平台,使真正重要的应用层和设备驱动层的开发时间不受变更影响,提高开发效率。实验结果表明,该平台具有较好的移植性,可扩展性,用户界面友好。     

There is more to context than location

Context is a key issue in interaction between human and computer, describing the surrounding facts that add meaning. In mobile computing location is usually used to approximate context and to implement context-aware applications. We propose that ultra-mobile computing, characterized by devices that are operational and operated while on the move (e.g. PDAs, mobile phones, wearable computers), can significantly benefit from a wider notion of context. To structure the field we introduce a working model for context, discuss mechanisms to acquire context beyond location, and application of context-awareness in ultra-mobile computing. We investigate the utility of sensors for context-awareness and present two prototypical implementations — a light-sensitive display and an orientation-aware PDA interface. The concept is then extended to a model for sensor fusion to enable more sophisticated context recognition. Based on an implementation of the model an experiment is described and the feasibility of the approach is demonstrated. Further, we explore fusion of sensors for acquisition of information on more sophisticated contexts.     

基于移动互联网软件产品的UI设计要素与要点探究

信息化时代,移动互联网飞速发展,并获得了非常广泛的应用,为广大网民提供了方便、高效的信息交流平台。然而,现代的移动互联网软件产品UI设计不可以简单的将以往的组织结构、界面规划以及应用方法等照搬过来,需要加强色彩、编排以及图形元素等方面设计的创新,并确保UI界面语言系统健全、设计风格和内容相吻合、界面显示高清以及UI界面设计具有良好的简洁性,保证设计出的软件产品能够满足使用者需求。     

反辐射导弹抗诱骗性测试系统UI设计

为改善传统反辐射导弹抗诱骗性测试系统操作界面,采用S3C2440A处理器及wince6.0平台,设计了一套适用于反辐射导弹抗诱骗性测试的用户界面,并通过触摸屏来进行操作,同时利用FPGA将测试系统中的模拟信号源控制部分进行数字化,与用户界面有机结合.现场测试表明,该系统具有人机界面友好,操作简易方便,反应速度高效,易于维护升级等特点。     

敏捷开发模式下的移动端UI设计规范研究

目的研究敏捷开发模式下移动端产品的UI设计规范创建方法与作用。方法从对敏捷开发模式的特征提炼入手,分析了该开发理念下UI设计规范创建的新思路,并结合实例提出了符合敏捷理念的UI设计规范创建的内容与作用、边界与弹性以及制作与保存方式。结论敏捷模式下对UI设计规范的合理创建与实施,对于提升开发效率与改善用户体验具有实用价值。