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【解析】船头方向始终与河岸垂直,则渡河最短时间为t0,小船在静水中做初速度为零的匀加速运动,当到达河岸时速度为静水中速度与水流速度的合成,即为 ,故A正确; 小船在静水中做初速度为零的匀加速运动,水流速度不变,则小船过河的平均速度为 ,故B错误;由于沿河岸方向上的位移为:x=v0t0,所以小船到达河对岸时的位...
This paper proposes a novel global optimization algorithm called Lichtenberg Algorithm (LA), inspired by the Lichtenberg figures patterns. Optimization is an essential tool to minimize or maximize functions, obtaining optimal results on costs, mass, energy, gains, among others. Actual problems may be...
\\u3057\\u3064\\u304c\\u3044\\u9aa8\\u75be\\u60a3\\u306b\\u304a\\u3051\\u308b\\uff23\\uff59\\uff42\\uff45\\uff58\\u2010\\uff29\\uff29\\u306b\\u3088\\u308b\... T Toyonaga,K Kawashima,N Uezaki,... - 《Orthopedics & Traumatology》 被引量: 0发表: 1984年 ...
摘要: 笔者根据多年的工作经验及工程的实际地质的情况,对菜高层建筑进行地基变形控制验算等一系列理论计算,通过对地基土条件进行的详细分析,论证,阐述了一个采用天然地基的工程实例,为基坑侧壁支护提供了经济,有效,方便,快捷的锚锭式钢板桩支护设计方案. 关键词: 天然地基,强度,沉降,地基承载力设计值,锚锭式钢板桩...
Two fractions of kraft lignin of low and high molecular weight were reacted with cholesteryl chloroformate (Chol.Cl) to produce a modified lignin that demonstrated very high hydrophobicity. Surprisingly, both fractions displayed discernible melting points as opposed to the starting lignin. The suspension...
Deep learning (DL) has recently emerged as a pivotal technology for enhancing magnetic resonance imaging (MRI), a critical tool in diagnostic radiology. This review paper provides a comprehensive overview of recent advances in DL for MRI reconstruction. It focuses on DL approaches and architectures ...
Devices and techniques for performing copy-back operations in a memory device are disclosed herein. A trigger to perform a copy-back operation in relation to a section of data stored on the memory device can be detected. Circuitry of the memory device can then read the section of data at tw...