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讨论了二阶模糊线性微分方程边值问题{y"+p(t)y'+q(t)y=g(t),t∈[a,b],t∈[a,b]y(a)=(a),y(b)=(β),(α),(β)∈E1的模糊近似解,即利用配置法将微分方程转化为函数线性方程组,针对其系数函数的符号的不同,通过计算函数线性方程组获得了原模糊微分方程的模糊近似解. 相似文献
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Magnetism manipulation in ferromagnetic/ferroelectric heterostructures by electric field induced strain 下载免费PDF全文
Magnetization manipulation by an electric field(E-field) in ferromagnetic/ferroelectric heterostructures has attracted increasing attention because of the potential applications in novel magnetoelectric devices and spintronic devices, due to the ultra-low power consumption of the process. In this review, we summarize the recent progress in E-field controlled magnetism in ferromagnetic/ferroelectric heterostructures with an emphasis on strain-mediated converse magnetoelectric coupling. Firstly, we briefly review the history, the underlying theory of the magnetoelectric coupling mechanism, and the current status of research. Secondly, we illustrate the competitive energy relationship and volatile magnetization switching under an E-field. We then discuss E-field modified ferroelastic domain states and recent progress in non-volatile manipulation of magnetic properties. Finally, we present the pure E-field controlled 180° in-plane magnetization reversal and both E-field and current modified 180° perpendicular magnetization reversal. 相似文献
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随着嵌入式系统处理器核数的增加,映射与调度成为软件开发的关键.为了提升系统性能,需要格外关注映射与调度过程中的通信开销.现有的粗粒度系统级或细粒度线程级通信优化虽然能提升性能,但都各有缺陷.为此,提出了基于整数线性规划的用于Simulink模型的多粒度通信优化映射与调度策略,将不同粒度的通信优化方法相结合,实现优势互补.实验结果表明,该方法能有效提高系统的整体性能. 相似文献
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