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51.
本文介绍一个功能较齐全、实用性强的陶瓷制品行业管理信息系统,对各子系统的主要功能作介绍,并给出数据库设计和程序设计的方法技巧。  相似文献   
52.
台湾问题是我国当前面临的一个事关国家主权领土统一、完整的关键问题。在坚持“一国两制”、“和平统一”的基本原则下,借鉴康熙收复台湾的历史经验,采取军事、政治、经济、统一战线等多种途径,是解决台湾问题的有效策略。  相似文献   
53.
Web Enhanced Instruction (WEI) is not intended to replace the traditional classroom setting, but rather to supplement the traditional lecture with course content that can be accessed from campus or the Internet. WEI has the potential to extend the boundaries of traditional classrooms by providing new opportunities for communication and interaction between students and the instructor. While the potential benefits of augmenting the traditional class with WEI have been recognized and discussed, what has remained largely unknown are student reactions to WEI as an addition to the traditional lecture. The Technology Acceptance Model (TAM) has been widely used in the Information Systems research to gather user reactions to information systems. The TAM examines users' perceptions of Usage, Usefulness, and Ease of Use. This research applied the TAM to the academic setting to measure student reactions to Blackboard, the WEI tool used in this study. Using several multivariate methods, results suggest that students (n = 692) found that the Blackboard elements which are associated with Course Content (Course Documents, Lectures, Student Tools, Announcements, and Quizzes) are used more often and are seen as more useful than those items that provide Course Support and communication (Discussion Board, External Web Sites, Faculty Information, and E‐Mail).  相似文献   
54.
Purpose: The limited uptake of improved agricultural practices in Africa raise questions on the functionality of current agricultural research systems. Our purpose is to explore the capacity for local innovation within the research systems of Ethiopia, Malawi and Mozambique.

Design/methodology/approach: Using Conservation Agriculture (CA) as a case study, we qualitatively explore with 26 locally based agricultural researchers the context of CA research and promotion, including their perceptions on persistent research gaps and issues in closing them.

Findings: Respondents identified that CA was not yet a finished product, with concerns regarding the benefit, feasibility and relevance of CA implementation. They asserted that while further adaptation was required, they were unable to do this due to institutional constraints within their research, extension and policy contexts.

Practical implications: We find that CA continues to be considered a donor-driven intervention in its current form and requires substantial further adaptation to local contexts before researchers will deem it ready for farmer uptake. The five research gaps identified by respondents highlight practical areas where further adaptations must occur.

Theoretical implications: Our findings suggest a lack of participatory research and extension most likely reflects limited financial, human and social capital to implement more participatory approaches. Without addressing these capacities, widespread adoption of complex farming systems change appears unlikely.

Originality/Value: Whilst many studies have identified a need for local innovation to enable CA utilisation, few have qualitatively explored directly with local researchers the capacity of such systems to do so. We address this gap in the literature.  相似文献   

55.
布线系统地优劣直接影响校园网的性能及网络转型。探讨校园网布线系统的选型及性能测试。  相似文献   
56.
随着信息技术的飞速发展,GIS软件产品已广泛应用于与地理坐标相关的几乎所有领域,软件的规模和复杂度都有很大的提高。因此,提高软件质量及可靠性已成为当前软件工程领域的重要任务.软件测试是保障软件质量的有效手段,面向对象软件测试是面向对象软件开发的不可缺少的一环。笔者从面向对象程序的特点出发,描述如何对GIS软件的分析和设计模型进行测试,强调将软件测试思想融合到软件开发的各个阶段。  相似文献   
57.
王鹏  兀伟  敬伟 《科技广场》2007,(1):130-132
目前,测控技术在军事、工业等控制领域中的应用已成为研究热点课题之一。作者详细介绍了630火炮随动测控系统的分析、设计与实现过程。开发了随动测控系统。并且很好解决了随动测控系统实时性、可靠性、同步性、分布式计算和时序等难点问题。该系统在630火炮随动系统中应用后,达到了预期效果。  相似文献   
58.
ERP软件选型决策方法及应用研究   总被引:2,自引:0,他引:2  
目前ERP软件选型缺乏科学的决策方法,论文分析了现有的一些评价指标,对软件选型评价体系和决策过程进行了分析和研究,提出了一种基于AHP-Delphi的选型决策方法,用以辅助企业解决ERP软件选型问题。  相似文献   
59.
Although Communities of Practice have become a core concept in understanding how knowledge is managed within organizations, there have been few studies of the praxis of formation of Communities of Practice. In this article, we report on a Grounded Theory study of the members of a previously identified Community of Practice within the UK Higher Education Academy Psychology Network. In addition to providing data on the functioning of the community, the study also revealed a hitherto unrecognized form of community that exhibits all of the characteristics of CoPs yet has only a transient existence that seems to nucleate around an existing core community. Drawing on the metaphor of quantum behaviour, we termed these communities Quantum Communities of Practice. We describe a theory to explain this phenomenon that is grounded in the data from the study. We conclude by discussing the value and validity of our findings and methodology and indicating the next steps we will take in our research.  相似文献   
60.
带前馈输入观测——状态反馈控制系统的设计过程,涉及带符号变量的矩阵方程组求解,其通解一般难于求出,国内外大多数文献只能用递推法求其前几个采样值。借助MATLAB符号数学工具箱的有关函数,直接进行带符号变量矩阵运算和方程组求解,得到其准确的通解,系统设计全过程由编制的M文件自动完成。仿真结果表明,提出的设计方法和求解过程是正确的。  相似文献   
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