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“三岁时,海浪拍上我的脚,从此我就爱上了海洋……”“当我潜入深海时,也许会遇上不可知的事物,但对于这份危险我总能泰然处之……”(席薇亚·厄尔博士)席薇亚·厄尔,著名的海洋生物学家,美国海洋大气总署(U.S.National Oceanic and 相似文献
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A neuro-space mapping(Neuro-SM) for modeling heterojunction bipolar transistor(HBT) is presented, which can automatically modify the input signals of the given model by neural network. The novel Neuro-SM formulations for DC and small-signal simulation are proposed to obtain the mapping network. Simulation results show that the errors between Neuro-SM models and the accurate data are less than 1%, demonstrating that the accurcy of the proposed method is higher than those of the existing models. 相似文献
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张齐军 《中国科教创新导刊》2012,(20):87-88
一体化教学是提高高等职业教育教学质量的重要方法和有效途径。通过编制精选、重组、优化、实用的一体化教学文件,正确处理师生角色定位、相互协调与互动,把教、学、做、评贯穿于不同的教学时点、环节、情境里,并适时进行角色转换、主次互变和必要重复;形成融知识传授、能力培养和素质教育于一体的一体化课程教学模式,使课程关键知识点、技能点一次性为学生所掌握,促使教学有序、协调、高效进行。达到提高教学质量和效果、提高学生综合职业能力和职业素养的目的。 相似文献
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Quasi-Newton methods are the most widely used methods to find local maxima and minima of functions in various engineering practices. However, they involve a large amount of matrix and vector operations, which are computationally intensive and require a long processing time. Recently, with the increasing density and arithmetic cores, field programmable gate array (FPGA) has become an attractive alternative to the acceleration of scientific computation. This paper aims to accelerate Davidon-Fletcher-Powell quasi-Newton (DFP-QN) method by proposing a customized and pipelined hardware implementation on FPGAs. Experimental results demonstrate that compared with a software implementation, a speed-up of up to 17 times can be achieved by the proposed hardware implementation. 相似文献
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珍·古道尔(Jane Goodall):著名的自然学家、动物行为学家,驰名国际的黑猩猩行为研究先驱,是国际动物保护界一位举足轻重的人物,也是二十世纪里最具有传奇色彩的一位女性。1960年珍·古道尔带着儿时的梦想前往非洲的坦桑尼亚研究黑猩猩,发现黑猩猩有许多和人类相似的行为,其中诸多具有重要价值的研究成果为日后灵长类动物的研究奠定了基础。近年,她又创立了“根与芽”环境教育项目,号召全球的年轻 相似文献
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