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1.
设L是一个完备剩余格,定义了定向完备偏序集上的Hohle意义下的满层L-拓扑,称之为模糊Scott拓扑;基于满层的L-滤子,建立了相应的Scott收敛理论。证明了一个定向完备偏序集是连续的当且仅当对于每一个满层的L-滤子,其Scott收敛等价于按模糊Scott拓扑收敛。  相似文献   
2.
Scott接线牵引变压器运行特性与等值模型研究   总被引:9,自引:1,他引:9  
利用漏磁阻抗概念讨论了Scott接线变压器的负载特性 ,特别是中性点电位偏移问题 ;提出了Scott接线变压器的两相等效电路 ,并揭示出了与利用系统坐标变换方法一致的三相—两相阻抗变换关系。最后给出了可用于稳态和暂态分析的相坐标下的数学模型  相似文献   
3.
Film production requires world building: the power to visualise and bring to life narrative through a film's total environment. This is often entirely speculative, imagining alternative or future worlds. Here, Alex McDowell , acclaimed British production designer, producer and Professor at the University of Southern California (USC) describes his world-building, narrative approach to production design, which he consolidated in the Steven Spielberg film Minority Report (2002) that envisioned Washington DC in the year 2050. The possibilities of this storytelling technique are demonstrated by its transference into real-life projects, such as the immersive model that his production company, 5D GlobalStudio, developed for Al Baydha, a Bedouin village in Saudi Arabia.  相似文献   
4.
Despite a distinguished heritage of learning in the Middle East, the expansion of provision for higher education is currently at an unprecedented scale. The Gulf States, in particular, are seeking to keep up with accelerated population growth and a demographic ‘youth bulge’. Guest-Editor Kevin Mitchell describes the architectural approaches employed in the design of institutions in the region from the first universities in Saudi Arabia to Foster + Partners's ground-breaking sustainable design for the Masdar Institute in Abu Dhabi and future projects.  相似文献   
5.
Curation or selection offers up probably the greatest challenge for the contemporary architect. With the onslaught of information, the emphasis is now on what an architect chooses to respond to rather than what is available to him or her in terms of sources. Iain Borden discusses how Block Architecture's responsive position enables the firm to react with immediacy to its urban surroundings, while also resulting in highly attuned ‘architectures of suggestion and momentary thinking’. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
6.
The preliminary results of a project that is currently investigating the nature and range of meanings of Antarctic heritage are explored. The project involves two visits to Scott Base, and the subjects of the qualitative research are the members of the New Zealand Antarctic community. Work so far suggests that different meanings do exist, and a four-fold typology of meanings is suggested which needs to be considered in decisions affecting the future of Antarctica.  相似文献   
7.
Scott变换是指通过简单硬件方式实现三相/两相电压的变换,在"电机学"课程里是非常重要的,但授课中一般不进行介绍.为了拓展学生的知识面,培养学生的创新意识和动手能力,本文介绍了一个基于Scott变换的设计实验,通过观测李萨如图形来加深对两个相信号合成磁场性质的理解.文中介绍了实验设计的具体内容,包括理论分析、实验电路和实验测试等.实践证明,这样的设计创新实验对培养学生的科技创新能力是非常有益的.  相似文献   
8.
This article examines the production and consumption of illustrated song lantern slides. Motivated by the commercial success of Tin Pan Alley songs, slide companies began illustrating songs with live action photography in the early years of the twentieth century. Shown between reels of film, the slides were an attraction themselves and an integral part of the filmgoers’ experience. The photographic experimentation in these slides, especially that of the firm Scott and Van Altena, is surprisingly novel. They frequently use multiple photograph negatives to exaggerate spatial and scale differences or frame narrative scenes. The author concludes that the layering and scale differences frequently seen in these slides allowed the company to expedite manufacture by recycling photographic images and also appealed to a popular taste for visual tricks in modern American visual culture. Although the imagery was nostalgic and conventional, the compositions challenged the viewer to see in a new, fragmented way. The often surreal effects show that the line between avant-garde experimental photography and commercial photography was not so clearly drawn.  相似文献   
9.
Lucy Bullivant looks at the shape of the new office to come. With the onset of increasingly sophisticated communications devices, how is the organisation of space in our immediate working environments going to change? Will the lines between furniture and dynamic electronic devices simply blur? Will the structure of commercial office buildings themselves be required to become increasingly reflexive to meet environmental demands in the face of dwindling energy reserves? Or is the mobile nature of electronic communications actually in danger of rendering the permanent office as we know it extinct? Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
10.
In the last thirty or so years, architects have embraced all manner of computer softwares and hardwares. This has often resulted in convoluted forms and a concentration on the part of architects to solve fabrication complexities at the expense of dexterous design explorations. Artist, designer and educator Andrew Kudless reminds us of the messy, illogical and contradictory aspects of design development, and that we have yet to develop something as multivalent in its evocative suggestions as the old-fashioned ‘hairy’ sketch.  相似文献   
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