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排序方式: 共有92条查询结果,搜索用时 31 毫秒
21.
Michael Weinstock 《Architectural Design》2010,80(2):126-129
Earlier this year, Michael Weinstock published a seminal book, The Architecture of Emergence: The Evolution of Form in Nature and Civilisation, which challenges established cultural and architectural histories. The conventional worldview is expanded by placing human development alongside ecological development: the history of cultural evolution and the production of cities are set in the context of processes and forms of the natural world. As well as providing a far-reaching thesis, Weinstock's book gives lucid and accessible explanations of the complex systems of the physical world. In this abridged extract from Chapter 5, Weinstock explains the dynamics of individual and collective metabolisms from which intelligence and social and spatial orders emerge. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
22.
果叶两用无籽桑树品种“大10”属三倍体品种,椹圆筒形,果粒大,汁多无籽,风味独特。果长径2.5~6.2cm,果横径1.3~2.0cm,座果率92.0%~96.0%,平均单芽座果数为5粒/芽,平均单果重4.44g。鲜榨果汁糖度9.0%~13.0%,酸度2.13g/L~5.69ge/L,出汁率70.0%~84.0%。“大10”成熟叶片长20.0~24.0cm,宽17.0~20.0cm。1/15公顷种植500株,成林桑园年产果量1488kg以上,年产叶量1650kg以上。该品种是目前种植面积最大的果用桑树品种。 相似文献
23.
针对传统蚂蚁遗传混合算法收敛速度慢的特点,提出了一种新的动态蚂蚁遗传混合算法.新算法采用最佳融合点评估策略,动态地控制遗传算法与蚂蚁算法的调用时机,并设计了相应的信息素更新方法,有效减少了算法的冗余迭代次数,提高了搜索速度;同时引入迭代调整闯值控制算法后期的遗传操作和蚂蚁规模,加快了种群进化速度,从而更快地找到最优解.通过对Muth and Thompson基准问题进行计算机仿真,实验证明新算法收敛速度得到了提高. 相似文献
24.
Presents the biography and scientific publications of Richard F. Thompson, a recipient of the award for Distinguished Scientific Contribution in 1974. For his imaginative and extensive contributions to our understanding of the neural bases of behavior. His careful and systematic investigations of the neurophysiology of behavioral plasticity have increased our knowledge of the nature of learning and have served as models of scientific inquiry. Through his writings he has clarified our thinking about critical conceptual issues concerning brain and behavior. As a teacher and colleague he has gently stimulated, encouraged, and guided the development of research and theory concerning the neurobiological bases of behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
25.
In comparing the responses of white Ss to the M-TAT and the T-TAT it was found that racial attitudes and prejudices were revealed in responses to the T-TAT pictures, and, where such attitudes existed, there seemed to be some impairment in projection. Color tended to make a difference in story content. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
26.
This study investigated the relationships between pore parameters and transport properties. Fourteen concrete mixtures were
investigated for water permeability, conductivity for the pore solutions and bulk concrete, as well as total porosity and
critical pore diameter. The measured parameters allowed comparison to the Katz–Thompson relationship as well as Archie’s Law.
Using a low-pressure device, measured permeability from 1 to 28 days was found to be approximately an order of magnitude higher
than that calculated using the Katz–Thompson relationship for the six mixtures examined with this technique. Better agreement
between measured and predicted permeability was found using apparatus capable of higher applied pressure. Comparing the data
to other published data, the Katz–Thompson relationship seems to be a useful technique for the approximation of water permeability.
The exponential relationship between porosity and normalized conductivity (the inverse of the Formation factor) forming the
basis of Archie’s Law was found to hold within each specific concrete mixture. However, no overall trend was apparent. The
constants of the Archie’s Law vary over a wide range. 相似文献
27.
采用磁控共溅射Ru和MoC靶,通过调节掺入MoC的含量获得非晶态RuMoC薄膜,研究了非晶RuMoC薄膜的热稳定性。HRTEM和XRD结果表明,在500℃下RuMoC薄膜依旧保持非晶结构;XPS分析结果表明,在该温度下,Ru-C键依旧保持完好,是RuMoC薄膜良好热稳定的关键。此外,研究了RuMoC在大马士革铜互连线微结构中的热稳定性。HRTEM结果表明,RuMoC薄膜实现直接电镀铜,TEM原位EDS结果表明,RuMoC薄膜在500℃下依旧成功阻挡了Cu原子扩散。 相似文献
28.
Peter Cook 《Architectural Design》2013,83(5):80-87
Peter Cook is the doyen of the architectural drawing world. He enthuses and champions the graphic in architectural schools across the globe, while producing extraordinary images within his own London-based practice. Here he offers us the rare chance to look over his shoulder at CRAB studio, proffering some rare tips and insights; he shares his graphic predilections and recounts the evolution of some of his most recent drawings. 相似文献
29.
30.
无核紫葡萄干燥特性及其总酚含量变化研究 总被引:1,自引:0,他引:1
通过自然晾晒、烘箱干燥和热风对流干燥3 种常见干燥方法对新鲜无核紫葡萄进行干燥,研究无核紫葡萄干燥特性及其动力学模型,探讨不同干燥方式和温度(50~70 ℃)等因素对无核紫葡萄失水特性的影响,进一步评价干燥方式对无核紫葡萄总酚含量的影响。结果表明:热风对流干燥较好地保留了无核紫葡萄的总酚含量;Henderson-Pabis模型(单项扩散模型)能较好地拟合新鲜无核紫葡萄在自然晾晒、烘箱干燥和热风对流干燥3 种常见干燥方法下的干燥规律;其有效水分扩散系数在1.411 9×10–10~4.297 3×10–10 m2/s之间。本研究准确地测定了无核紫葡萄干燥过程的含水率及失水速率变化,为无核紫葡萄干燥过程的优化和含水率在线检测控制提供理论依据。 相似文献