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排序方式: 共有169条查询结果,搜索用时 15 毫秒
1.
《Telecommunications Policy》2014,38(8-9):674-683
The ladder of investment was adopted by many European (and other) regulators in the era of copper networks as a means of implementing unbundling in a way which progressively promotes competitive providers׳ infrastructure investment in fixed networks. The paper reviews the evidence of its application and effects, in comparison with the most likely alternative, argues that it probably conferred benefits. In the more recent era of transition to fibre in Europe, regulatory priorities have shifted towards promoting roll-out. Two broad approaches are identified; one continues the focus on a programme of infrastructure competition in taking fibre to the home; another, relying on fibre to the cabinet, reverses it with bitstream used as the access product. It is soon to evaluate the two approaches. 相似文献
2.
《Technovation》2020
Imaginary technical devices and machinery portrayed in the James Bond films are known to have inspired real innovation activities. This paper investigates the dynamics of cultural entrepreneurship behind this phenomenon. It presents a hermeneutic analysis of the James Bond film series which identifies various patterns in the portrayal of technology which create labels and vocabularies for innovation activities and cognitive legitimacy for their implementation. These patterns have little in common with systematic approaches known from industrial research and development. They are instead related to general strategies of sense-making among users, which neglect practical issues in engineering. Drawing on Suvin's concept of the novum, the paper describes this as a transformational approach to innovation, which is less interested in the actual characteristics of a new artefact, but rather its function as an enabler for change. 相似文献
3.
Brigitte Biehl 《Consumption Markets & Culture》2020,23(5):439-455
ABSTRACT Visual imagery provides aesthetic experiences for viewers, and viral advertising films address viewers’ experience of movement which has not been analysed. Developing visual analyses, this study uses phenomenological approaches and the concept of kinaesthetic empathy, defined as the ability of viewers to react to movements, also in film. It considers Chinese Wei movies (“microfilms” or viral advertising films) with reference to examples by Audi and Swarovski as representatives of China's post-socialist marketing culture. Women in these films are presented as “in motion,” yet still are often delimited by traditional gender stereotypes. These films are potentially ambivalent ideological carriers that encourage women to reinvent themselves through consumption within traditional gender roles but may also suggest the pursuit of different experiences as movement is abstract, transitory and cannot be commodified. 相似文献
4.
文章运用SWOT分析方法从定性角度分析广西再生铜产业在发展过程中所面临的机遇与威胁以及优势和劣势,然后运用层次分析法定量分析影响广西再生铜产业的各种内外部因素,得出:(1)在当前外部环境下广西再生铜产业发展中面临的最大机会是铜的市场需求很大,而最大的威胁是再生铜原料供应日趋紧张;(2)在当前内部环境下广西再生铜产业发展中最大的优势是地理区位优势,而最大的劣势在于技术装备水平落后。最后采用SWOT四边形的方法选择出适合广西再生铜产业发展的SO战略。 相似文献
5.
曾建兰 《保险职业学院学报》2011,(3)
本文以《功夫熊猫》电影为例,对英汉翻译中的归化与异化进行了讨论,从译者主体性和文化因素角度分析了归化和异化策略在影片字幕中的应用。 相似文献
6.
本文研究了用于开关电容(SC)滤波器的离散积分器,所推荐的积分器是由无耗离散积分器(LDI)和双线性离散积分器的最佳线性结合而成,因此,称之为组合离散积分器(CDI)。由于这个积分器使正常转折频率增加一倍,并使高频离散积分器误差减少到最低限度,所以它对高频应用是理想的。文中给出了组合离散积分器的几种SC实现,并且还给出了以组合离散积分器为基础,模拟一般一阶和二阶的模拟滤波器单元的SC电路。 相似文献
7.
微波带状线低通滤波器的设计制作与性能改善 总被引:1,自引:0,他引:1
讨论了带状线低通滤波器因实际制作的导带宽度发生变化引起滤波器性能下降时,如何改善滤波器性能的方法。我们采用惠普公司EESOF软件,对滤波器的结构和电气参数和分别作了灵敏度分析,以此为改善滤波器性能的依据。经实验对比,改进后的滤波器性能有了明显改善,且性能稳定。 相似文献
8.
Viterbi算法是卷积码最常用的译码算法,在卷积码约束长度较大,译码时延要求较高的场合,如何实现低硬件复杂度的Viterbi译码器成为新的课题。本文提出新颖的Viterbi路径权重算法、双蝶形译码单元结构、高效的状态度量存储器等技术,使Viterbi算法充分和FPGA灵活原片内存储和逻辑单元配置方法相结合,发挥出最佳效率。用本算法在32MHz时钟下实现的256状态的Viterbi译码器译码速率可达400Kbps以上,且仅占用很小的硬件资源,可以方便地和Furbo译码单元等集成在单片FPGA,形成单片信道译码单元。 相似文献
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