可变精度衰减调制的Linux嵌入式任务调度算法     

武苗苗  周来 《科技通报》2015,(4):142-144

对嵌入式Linux系统进程中的任务调度算法设计是保证操作系统稳定和高效运行的核心要素。传统的嵌入式Linux系统任务调度算法采用分簇能耗调度的PSO遗传进化算法,当任务复制和区间插入失衡时,调度效果不好。提出一种基于可变精度衰减调制的Linux嵌入式任务调度算法,首先进行Linux嵌入式任务调度平台总体设计,进行任务信息流模型构建,将嵌入式系统客户端将创建好的任务流提交给服务器,结合任务流集合中各任务流的优先级属性和提交时间,进行变精度衰减调制,得到Linux嵌入式分簇任务调度模型。实验结果表明,该算法无论是单个任务流还是在多任务流调度运行环境下,改进算法的任务调度耗时较少,通过可变精度衰减调制,保证了多任务流中的任务能够按照流程优先级属性以及提交的先后次序进行合理的分配,有效提高了Linux嵌入式系统的运行效率。  相似文献   

一种基于Zigbee的分布式井盖监控系统     

李志  裴军芳 《科技通报》2015,(3):170-173,187

随着我国现代经济发展水平的不断提高,城市井盖数目逐渐增加。由于较多井盖被盗,致使路面形成陷阱,危害到过往车辆和行人安全。提出了一种基于Zigbee无线网络的智能安全监控系统,解决分布式布控困难,不能实时监控、成本较高的问题。融合GPRS网络,设计相应的嵌入式网关和Web服务器,实现了对缺失井盖的精确定位、自动报警。  相似文献   

Wake up Information Literacy Instruction: Ideas for Student Engagement     

Lisa Campbell  Diana Matthews  Nance Lempinen-Leedy 《图书馆管理杂志》2015,55(7):577-586

In this article, three librarians from Santa Fe College, the community college winner of the 2015 ACRL Excellence in Academic Libraries Award, share their successful work in information literacy instruction. While the ACRL award is given for overall achievement, this article focuses upon their creative and varied approaches to instruction, incorporating a wide blend of strategies to reach students across the college. Beginning with targeted approaches to virtual instruction, including broad use of the flipped classroom model, and building in active learning techniques, the librarians at Santa Fe College have built an instruction program that could serve as a model to community college libraries across the country.  相似文献   

Better Together: Responsive Community Programming at the U-M Library     

Jamie Lausch Vander Broek 《图书馆管理杂志》2015,55(2):131-141

In the past seven years, the University of Michigan Library's programming model has evolved to be responsive and reflective of staffing areas of interest and expertise. Our team-based, iterative model enables us to develop responsive exhibits, workshops, experiences, and events in our community. This article explores our experiences in developing this model through the lens of some of our collaborations with the Ann Arbor District Library (AADL). Our approach to programming opportunities builds on learning by doing, building deeper, mutually beneficial relationships with other organizations, and continually making sure we are truly developing programming with our audience (our community) in mind. While public and academic libraries often develop distinct sets of services, collections, and expertise to serve their respective communities, successful collaborations can yield interesting opportunities for more effective engagement and programming. Our relationship with AADL has helped us to identify and better understand how we can connect our teaching and research missions with the interests and needs of the broader community in which we are situated.  相似文献   

组织认同与离职倾向关系研究--基于工作嵌入的中介效应分析     

方淑苗  徐志仓  倪清 《巢湖学院学报》2015,(4):59-64

如何改善员工—组织的关系,降低员工的离职率已成为当今组织管理者关注的焦点。以安徽省5家公路行业公司共239名企业员工为研究对象,运用层级回归等方法考查了组织认同与离职倾向之间的关系,并探讨变量工作嵌入在其中的中介作用。研究结果表明：变量组织认同对离职倾向有显著正向影响作用,并且工作嵌入在其中起到完全中介作用。  相似文献   

Envisioning the Academic Library: A Reflection on Roles,Relevancy and Relationships     

Geraldine Delaney  Jessica Bates 《New Review of Academic Librarianship》2015,21(1):30-51

The focus of this article is to reflect on current and near future issues and trends concerning academic libraries. This includes an overview of the literature on embedded librarianship and a focus on the need for more participatory and collaborative approaches to library services.

The core argument is that academic libraries need to continue to adapt their roles and develop stronger relationships across the university in order to maintain and promote their relevancy to all stakeholders. Embedded roles in research and teaching, and an embedded existence through collaboration and outreach will strengthen the academic library's presence within its parent institution.  相似文献   

嵌入式软件的可信测试技术分析与设计     

杨阿辉 《鸡西大学学报》2011,11(9):56-58

嵌入式应用领域的不断拓展,嵌入式系统的安全性和可信性越发重要,如何设计和测试一个可信的嵌入式系统是现在和未来研究的重点,尤其是嵌入式软件的可信测试技术与方法的研究。在分析软件运行剖面的基础上,依据分支路径和MM-路径测试技术,研究基于嵌入式系统的可信软件测试方法,提出一种代码覆盖和集成测试技术,用于结构覆盖测试和程序复杂度分析,指导可信软件代码设计和测试用例设计,提高软件测试效率和加速错误定位。  相似文献   

基于本科实验室平台提升程序设计系列课程质量新途径研究     

杨征  程志君  魏迎梅  钱猛  张健东 《高等教育研究学报》2011,34(4):82-84

程序设计类课程是工科专业重要的基础课程,介绍了本课程小组依托我院本科实验室平台,提升程序设计系列课程质量的一些探索改革的方法及经验。  相似文献   

基于S3C2440的嵌入式Web服务器的设计与实现     

郭志勇 《安徽科技学院学报》2011,25(2)

介绍了一种基于S3C2440嵌入式Web服务器的设计方法,利用嵌入式BOA服务器和CGI程序完成整个Web服务器的实现方式。以嵌入式Linux操作系统为软件平台,对Boa Web服务器进行配置,然后编写相应的CGI程序,实现基于S3C2440嵌入式Web服务器的设计。嵌入式系统接入网络已经成为嵌入式系统应用的一个重要方向和必然结果,嵌入式Web服务器是嵌入式系统网络化应用的重要方面。  相似文献   

Embedded creative workers and creative work in education     

Ben Goldsmith  Ruth Bridgstock 《Journal of Education & Work》2015,28(4):369-387

This article is concerned with the many connections between creative work and workers, and education work and industries. Employment in the education sector has long been recognised as a significant element in creative workers’ portfolio careers. Much has been written, for example, about the positive contribution of ‘artists in schools’ initiatives. Australian census analyses reveal that education is the most common industry sector into which creative workers are ‘embedded’, outside of the core creative industries. However, beyond case studies and some survey research into arts instruction and instructors, we know remarkably little about in which education roles and sectors creative workers are embedded, and the types of value that they add in those roles and sectors. This article reviews the extant literature on creative work and workers in education, and presents the findings of a survey of 916 graduates from creative undergraduate degrees in Australia. The findings suggest that education work is very common among creative graduates indeed, while there are a range of motivating factors for education work among creative graduates, on average they are satisfied with their careers, and that creative graduates add significant creative-cultural and creative-generic value add through their work.  相似文献