元数据在数字图书馆中的应用

本文从数字图书馆的信息资源组织人手，介绍了使用广泛的MARC元数据、都柏林核心元素集、因特网内容选择平台、资源描述框架，并探讨了元数据在数字图书馆的应用。     

数字环境下公共数据的内涵、边界与划分原则分析

厘清数字环境下公共数据的内涵、边界是推进公共数据开放共享的必要前提。基于多学科视角的概念解析、比较研究与归纳推演,本文揭示了数字环境下公共数据内涵、边界问题的表征、成因,并从责任边界、运行边界、价值边界三个维度搭建分析框架。研究发现,当前公共数据内涵认知与边界划分的不确定性反映出数据治理理念、秩序、能力等诸多方面的现实问题,理解公共数据问题的关键应把握其数据属性与公共属性两大主线。同时,概念理解的相对性、数据主张的兼容性、责任主体的多元性与价值认知的主观性直接影响公共数据边界的划分。因此,数字环境下公共数据边界划分的不确定性是对以往简单的、固化的数据边界的扬弃,应进一步理清公共数据与个人数据、企业数据、开放数据等不同类型数据之间的区别与联系,进而明确其边界判断应秉持公共性原则、基于可信生态原则、弥补市场失灵原则与保持适度张力原则。图4。表2。参考文献38。     

DPLL implementation in carrier acquisition and tracking for burst DS-CDMA receivers

This paper presents the architectures, algorithms, and implementation considerations of the digital phase locked loop (DPLL) used for burst-mode packet DS-CDMA receivers. As we know, carrier offset is a rather challenging problem in CDMA system. According to different applications, different DPLL forms should be adopted to correct different maximum carrier offset in CDMA systems. One classical DPLL and two novel DPLL forms are discussed in the paper. The acquisition range of carrier offset can be widened by using the two novel DPLL forms without any performance degradation such as longer acquisition time or larger variance of the phase error. The maximum acquisition range is 1/(4T), where T is the symbol period. The design can be implemented by FPGA directly.     

城市发展与微电子先行

城市的发展建设目标是实现城市的数字化和信息化。它们的主要特征都应以微电子技术为基础,微电 子技术先行是城市发展的重要保证。     

明轮式船舶推进器的蹼板结构优化设计

本文针对9GSCC-1.4型水草收割机明轮驱动装置使用性能要求,基于Pro/E软件建立与物理样机相同的数字化模型,采用其Pro/MECHANICA模块对蹼板尺寸进行灵敏度分析,并对其结构尺寸进行了优化设计,实现水草收割机推进器有关动力学计算。通过上述步骤完成了明轮装置的数字化设计过程,为明轮装置系列产品的开发提供了一种新的设计模式。     

基于培养学生应用和创新能力的“数字电子技术”课程的教学改革与实践

“数字电子技术”已渗透到现代信息技术的各个领域,成为电子信息类学科一门重要的专业基础课。本文围绕培养电子设计与应用类人才这一目标,探讨了“数电”课程改革的基本思路,对课程教学内容、教学方式和方法等方面做了几点优化改革与创新,取得了较好的成效,具有一定的参考价值。     

录像反馈教学法应用于排球技术教学的实验研究

本文应用文献资料法、实验法、数理统计法,对录像反馈教学法应用于排球选项课教学中进行研究,通过对学生学习兴趣的测量、专业技术的测试进行分析得知:排球选项课教学中,运用录像反馈教学法,有利于提高学生学习排球技术的兴趣和学习积极性;在教学中,可以充分体现出教师的主导性和学生的主体性,建立良好的师生关系,提高教学质量,改善教学效果。     

影像反馈教学法在羽毛球选项课中的实验研究

本文以中国劳动关系学院学生为研究对象展开实验性研究,采用文献调查法、专家访谈法、问卷调查法、实验对比研究法、数理统计法等研究方法,通过对比在羽毛球选项课中应用影像反馈教学法与传统教学方法在调动学生积极性及各项技术动作等方面的实际差别,总结出影像反馈教学法在羽毛球选项课中的独特优势,同时归纳出高效、适合实际情况的影像反馈教学模式。     

Elite coaching and the technocratic engineer: thanking the boys at Microsoft!

The primary purpose of this article is to provide an in-depth understanding of the manner in which surveillance technologies have become readily appropriated and utilised by elite Rugby Union coaches. It is conceded that positions adopted by populist writings commonly categorise the act of coaching as an educational activity that harnesses holistic intentions. Through reflecting upon semi-structured interviews with players located at an Aviva Premiership Rugby Union Club, we provide insight into an elite sporting institution that more accurately depicts coaching as a technocratic activity. The resultant analysis is critical in its review of surveillance mechanisms embedded in institutional practice, extending to the sports coaching setting, which explicate sinister rather than pastoral motives to enforce a disciplinary power that enhances the quantification of athletic performance. The article concludes by emphasising the impact of such practices upon establishing a sense of trust and the construction of self autonomous to the sporting domain. We argue that the emerging and steadfast acceptance of technology in the elite coaching environment is threatening to circumvent the learning potential of players by merely viewing them as functionaries. In adopting this position, we tentatively suggest that future research seeking to inform the practice of coaching and coach education should continue to pursue this critical dialogue to question whether, and to what extent, an overreliance on technology is becoming perceived as the ‘gold standard’ of professional practice amongst the coaching fraternity.     

运动技术录像解析教学实验软件的开发

运动技术录像解析是运动技术分析中的重要手段,也是大学体育专业学生应该了解和掌握的重要知识技能。但是由于受到各种条件的限制,与教学配套的相关实验并没有得到很好的实施和推广。为适用教学和实验的需要,改善当前的教学条件,作者设计了这样一个可用于运动技术录像解析教学实验的辅助软件。软件经实际使用收到了较好的教学效果。本文就是对这个软件的情况进行介绍,希望能得到同行的关注和见解。这个软件的意义并不在于理论上,而在于它的新型实用方面。