Energy consumption of hotel can be a hot topic in smart city. To find the key impact factors of energy consumption to realize the energy saving target. This paper examined the …
准确、快速解析混合样品的组成比例，对食品与农产品加工过程的质量控制和配方设计具有重要作用。传统解决方法多依赖大量代表性样品建立统计模型，耗时耗力。本研究以醇类及酸类液体混合样品、以无近红外特征吸收的四氯化碳为溶剂的低浓度溶液混合样品的透射光谱，以及片状烟叶样品漫反射光谱为研究对象，采用导数光谱与S.G.平滑预处理，结合非负回归系数回归法（配方回归），验证了该 …
Abstract With global warming and declining Arctic sea ice area in autumn observed by satellites since 1979, anomalous cold snaps in recent winters have affected large parts of …
Effects of the sharp stratification of fluid density on the nonlinear hydroelastic waves traveling in an infinite elastic plate floating on a two-layer inviscid fluid are …
北极海冰范围从１９７９年有卫星观测资料以来呈现明显下降趋势，尤其是９月份。２０１２年９月，北极海冰范围达到有观测记录以来的最小值，而２０１３年９月比２０１２年同期增加了６０％。增加的区域主要在东西伯利亚海区、楚科奇海和波弗特海区。本文应用距平和经验模态分解方法，分析了美国国家冰雪数据中心的北极海冰卫星数据、欧洲预报中心的夏季底层大气环流数据和上层海洋的温度， …
Satellite records show the minimum Arctic sea ice extents (SIEs) were observed in the Septembers of 2007 and 2012, but the spatial distributions of sea ice concentration reductlon …
The nonlinear hydroelastic response of very large floating structures (VLFSs) or an ice sheet floating on the surface of deep water, idealized as a semi-infinite thin elastic …
We consider a class of two- dimensional nonlinear dynamic system with a forced term on a time scale T and obtain sufficient conditions for all solutions of the system to be …
An analytic approximation method known as the homotopy analysis method (HAM) is applied to study the nonlinear hydroelastic progressive waves traveling in an infinite elastic plate …
借助时间尺度的有关理论,运用不动点定理和不等式技巧研究时间尺度上一类非线性动力系统的渐近性和振动性。给出具有某种渐近性的非振动解存在和所有解振动的充要条件,推广并改进已有某些结果。
