排序方式： 共有235条查询结果，搜索用时 15 毫秒
81.
Justine Grønbæk Pors 《教育政策杂志》2013,28(4):466-481
AbstractThis article proposes a framework for thinking about the ghostly, thus arguing that policy can be understood as a landscape of intersecting and colliding temporalities from which arouse curious workings of barely-there forces, spooky energies and vibrating saturations of affective ambivalences. I present an empirical study of a policy agenda of introducing an assessment culture and improving the management of the Danish public school. I explore how all the routines and habits deemed outdated and sought annihilated by a new policy paradigm continue to haunt head teachers as seething presence of lurking resistance towards the policy aims as well as insidious doubts. Thinking about the ghostly contributes to studies of education policy by locating the reality of power in the mundane everyday doings and experiences of educational practitioners and insisting on the very tangled way people sense and intuit the complexities of contemporary forms of power. 相似文献
82.
uC/OS-II是一款非常优秀的开源实时嵌入式操作系统,但由于其简单功能特性,限制了应用范围,与其它支撑软件如TCP/IP、文件系统(FS)、图形界面(GUI)等结合使用构建嵌入式应用软件是一个必然的趋势。针对目前嵌入式系统对开发图形用户界面应用的迫切要求,详细介绍了图形用户界面软件uC/GUI在SmartARM2200的硬件平台上的移植过程和应用方法,归纳出整合移植的具体步骤,经任务实现证明,该整合移植工作是成功的,整合出的平台是稳定的,可靠的。 相似文献
83.
介绍了一种嵌入式以太网接口的设计与实现方法。首先对微处理器LPC2368和物理层芯片DP83848C作了简单的介绍,然后给出了基于LPC2368的以太网接口的硬件设计,最后简述了其软件的实现过程。 相似文献
84.
85.
本文结合环境投入产出—生命周期分析(EIO-LCA)和结构分解分析(SDA),将1992—2007年中国居民消费嵌入式碳排放的增长,分解为生产系统和消费系统的驱动效应。研究结果表明:生产系统中因素的总效应始终为负值,消费系统中因素的总效应始终为正值,且后者的绝对值大于前者,进而引起嵌入式碳排放总量的增加。进一步研究发现,技术进步始终是抑制碳排放增长的最主要因素,而消费模式的改变已成为推动嵌入式碳排放增长的主要力量,且消费模式变化的增排效应强于技术进步的减排效应。基于以上分析,我们认为,目前仅仅针对生产系统的减排政策和措施并不能实现有效减排,减排需要生产系统和消费系统同时改进。除了技术节能外,我国还应把消费领域的节能作为"节能减排"一个重要内容,并采取更有力的措施来引导和促使居民消费模式向低碳方向转变。 相似文献
86.
While the relevance of lead users has been well established for the early phases of the innovation process, such as ideation and creativity, the relationship between lead userness and implementation and diffusion has not been investigated. This is surprising, as the conjecture that lead user ideas are more likely to be implemented and diffused than non-lead user ideas is a key tenet of lead user research. To test this conjecture we draw on a sample of 87 internal process users in a large electronics firm who submitted ideas to an idea management system. 452 ideas were suggested, of which 148 were implemented and 33 further diffused on the shopfloor. We find that higher lead userness is positively and significantly associated with the likelihood of suggested ideas being implemented and diffused. This effect is substantial: Ideas coming from lead users were more than two times more likely to be implemented and more than three times more likely to be diffused than ideas coming from non-lead users. We conclude that lead user ideas are more likely than non-lead user ideas to be implemented and diffused throughout a social system, which arguably constitutes the ultimate success of any idea. Our research contributes to research on (internal) lead users, idea management systems, and idea implementation and diffusion. 相似文献
87.
姜秀玉 《鞍山师范学院学报》2009,11(4):67-70
随着计算机技术的迅速发展和芯片制造工艺的不断进步,嵌入式系统的应用也越来越广泛．嵌入式系统是以应用为中心,以计算机技术为基础,且软硬件可裁剪,适应于对功能、可靠性、成本、体积、功耗有严格要求的专用计算机系统．本文介绍了嵌入式系统的基本知识,提出了在嵌入式系统开发过程中应遵循的原则,并结合实例进行了说明． 相似文献
88.
普适计算在嵌入式系统设备中的应用 总被引：1，自引：0，他引：1
本文介绍了普适计算、嵌入式系统的概念以及普适计算在嵌入式设备中的特性,并根据嵌入式系统设备的特点和技术要求,阐明了普适计算应用于嵌入式系统设备中的相关原则。最后以智能GPS导游系统为例说明了普适计算在嵌入式系统应用中多方面的优势和发展前景。 相似文献
89.
本文首先介绍了嵌入式系统应用现状和相关技术以及涡流无损探测技术在检测工件缺陷和质量控制方面的应用,然后提出了一种将两种技术相结合的方法,最后,分析了新方法的优点。该方法使得涡流无损探测的结果更加精确,在线检测速度更高,在工件质量控制和缺陷检测领域有一定的应用价值。 相似文献
90.
本文分析了ARM核异常处理机制,提出了ARM核异常处理设计的方法和异常处理函数设计的要点,并就软中断SWI程序设计进行了探讨。 相似文献