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511.
A challenge faced by most heads of academic departments around the world is to manage the adoption and use of appropriate learning technologies in order to support the department’s learning offerings to students. Earlier research undertaken by the authors revealed that lecturers within the Department of Marketing and Retail Management at the University of South Africa believed a learning management system (LMS) to be the most appropriate technology to use. The experience of the Chair of Department, however, is that lecturers are using the university’s proprietary LMS, myUnisa, either to a limited extent or hardly at all. Consequently, further research was undertaken targeting the other Chairs of Departments and selected senior lecturers within the School of Management Sciences, to which the Department of Marketing and Retail Management belongs, in order to identify ways of increasing the use of myUnisa amongst lecturers. 相似文献
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513.
Systems integration encompasses both system design and management of supplier networks. We examine the “second face” of systems integration related to the organization and management of supplier networks. We analyze a unique dataset on the supply chains for three major U.S. weapon systems to examine how systems integrators balance the economies-of-scope benefits of general-purpose technologies and the benefits of horizontal supplier specialization. We show that horizontal specialization – an establishment’s focus on a particular market – differs with distance from the systems integrator. Systems integrators derive the benefits of specialization primarily (though not exclusively) from their direct suppliers, and they access general-purpose technologies from lower-tier suppliers. Some of the lower-tier suppliers themselves integrate complex subsystems, belying the image of the supplier network as a “production pyramid” with simple firms at its base. We further find that the supply chains of the three weapon systems that we study are dominated by facilities whose main line of business is in non-defense markets, because of the large number of lower-tier suppliers that serve commercial markets. This demonstrates the importance of the supply chain as a source of commercial-military integration, linking defense production to the wider economy and casting doubt on the view that there is a “wall of separation” that prevents the U.S. defense effort from gaining access to civilian technologies. 相似文献
514.
法国国家图书馆对图书有一套科学的保护方法 :新书的初始化处理 ,图书质量的终身跟踪 ,图书藏用环境的优化 ,消毒技术的现代化 ,去酸技术的半工业化 ,数字保护和修复技术。表 1。参考文献 1。 相似文献
515.
肖荣畅 《六盘水师范高等专科学校学报》2012,24(3):49-52
介绍离心泵产生汽蚀的原因,产生汽蚀后的危害;全面阐述了管路设计的改变、离心泵的安装高度、政变泵本身的结构、提高装置的汽蚀余量NPSHa和降低泵的汽蚀余量NPSHr来提高离心泵的抗汽蚀性能;采用新材料、新技术加强对离心泵的保护,降低汽蚀现象对泵的损坏. 相似文献
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The term “corporate transparency” is frequently used in scholarly discussions of business ethics and corporate social responsibility
(CSR); however, it remains a volatile and imprecise term, often defined incompletely as “information disclosure” accomplished
through standardized reporting. Based on the results of empirical studies of organizational behaviors, this paper identifies
a new set of managerial practices based on the use of information and communication technologies (ICT) and particularly Internet-based
tools. These practices are resulting in what can be termed “dynamic transparency.” ICT allows for an informational environment
characterized by two-way exchange between corporations and their stakeholders, which fosters a more collaborative marketplace.
It is proposed that such dynamic information sharing, conducted by means of ICT, drives organizations to display greater openness
and accountability, and more transparent operations, which benefit both the corporations and their constituents. One of the
most important outcomes that will accrue to consumers and other individuals is the “right to know,” especially about corporate
strategies and activities that might directly affect their quality of life. This paper demonstrates that dynamic transparency
is more desirable and more effective than the more common “static transparency” where firms’ information disclosure is one-way,
usually in response to government regulation. We present three ethical arguments to justify the implementation by business
firms of dynamic transparency and demonstrate that their doing so is related to CSR and to augment and complement stakeholder
engagement and dialogue. The paper concludes with a summary of the possible limits to and the problems involved in the implementation
of dynamic transparency for corporations, and suggests some strategies to counter them. 相似文献
518.
【目的/意义】为大数据环境下情报学的研究提供方法、技术和应用过程的参考。【方法/过程】应用特征分析法、文献分析法和系统开发方法,对大数据环境下情报学方法与技术体系进行了特点、方法和应用过程的研究。分析了大数据环境下情报学研究发生的演变,根据这些变化,指出了大数据环境下情报学的研究思路,从文献分析、Web数据分析和综合分析三类梳理了情报学研究的方法与技术,并分别给出了这些方法和技术的应用过程。【结果/结论】通过方法与技术的梳理发现,大数据环境下情报学的研究是以数据为中心的、多种技术综合应用的科学研究过程。 相似文献
519.
针对“关键核心技术创新突破”焦点问题,考虑创新过程的动态性特点、关键影响因素及其作用机制,以企业和学研机构为博弈主体构建产学研协同模式下关键核心技术创新演化博弈模型,系统探讨影响博弈双方合作策略选择的关键因素及其驱动机制,并结合数值仿真揭示各因素变动下协同创新系统的演化轨迹。结果表明:政策激励因素能够促进企业与学研机构协同创新,但不同政策措施的影响效果具有差异;降低合作成本和“搭便车”收益,提升合作收益增量能够促进协同创新;盲目设置过高的创新深度而使研发成功率过低无助于双方合作;企业对学研机构的研发资助、违约金、机会损失和声誉损失以及合理的利益分配系数能够有效抑制中途背叛行为的发生。基于此,提出优化政府政策组合、鼓励企业牵头组建创新联合体、完善体制机制设计等建议,从而为政府科学施策、精准施策,推动解决关键核心技术“卡脖子”问题提供实践参考。 相似文献
520.
同时分析科学与技术在时间和内容上的互动关系可以具体揭示二者关联规律,但目前缺乏相关研究,同时难以发现领域内核心主题.鉴于此,提出一种识别科技演化模式的方法,利用搜索路径节点对算法分别对科学文献和专利文献提取全局主路径,通过潜在狄利克雷分配主题模型并结合专家意见进行文本挖掘,提取科学研究与技术研究的重点主题,并基于主路径分析结果分别形成科学文献和专利文献的发展路径时间轴,通过计算主题间余弦相似度来衡量相似主题;此外,对科学文献与专利文献的相似主题基于主题词共现词频进行连接,以桑基图的形式呈现,从主题的角度识别科学与技术的关系,探讨领域内科学与技术之间的互动模式,并在此基础上综合考量科学与技术价值、挖掘核心技术.基于基因工程疫苗领域的实证结果显示,该领域大体上呈现科学研究和技术应用相互促进的模式,基因工程的基础技术发展促使基因工程疫苗可以应用于多种疾病领域,特别是抗感染领域,mRNA疫苗是新的研究热点. 相似文献