Results 71 to 80 of about 14,849 (205)
Progress in developments and applications of the HYDRUS model and associated coupling model packages [PDF]
HYDRUS model is widely used in agricultural irrigation and pollution transport because it can comprehensively consider the movement of water, heat, and pollutants in the soil-plant-atmosphere system.
Bei ZHANG +5 more
core +1 more source
International Journal of Applied Linguistics, Volume 36, Issue 1, Page 322-335, February 2026.ABSTRACT Most research into the relationships of linguistic complexity and accuracy to functional adequacy has focused on either spoken or written mode. The current study extended previous studies by investigating these associations across both modalities and how the nature of these relationships was influenced by learners’ L2 proficiency and task type.
Xiaojun Lu, Yui Suzukida
wiley +1 more source
A new adaptive algorithm for digital video watermarking(一种视频图像的自适应水印新算法)
Zhejiang Daxue xuebao. Lixue ban, 2003 随着计算机和网络技术的快速发展,数字水印技术正成为一种数字媒体知识产权保护的有效方法.本文提出一种视频自适应水印新算法,它直接对压缩后的视频数据流进行操作,将水印信息嵌入到运动矢量上.根据待嵌入的水印信息和运动矢量的特征矢量,新算法自动调整嵌入方案,使得嵌入水印后的图像质量损失达到最小.水印的提取算法具有盲检功能,并且新算法与视频压缩标准有很好的兼容性.实验结果表明,算法简单有效.
ZHUZhong-jie(朱仲杰) +3 more
doaj +1 more source
Preliminary Analysis of Spatiotemporal Variation of Water Quality and Its Influencing Factors in the Jiulong River Watershed [PDF]
, 2012 选取闽东南九龙江流域21个典型小流域开展2010年丰(8月)、平(11月)、枯(2月)3个水期的基流水质监测,并借助gIS、多元统计分析方法识别流域水质的时空分布特征及其影响因素,为九龙江流域水质监测、管理与控制提供依据.结果表明,九龙江水质枯水期最差,平水期次之,丰水期水质较好.表征生活污水、工业废水的污染因子对水质变化的贡献率为45.58%,表征农业污染的主成分的贡献率为21.28%.nH4+-n、SrP、高锰酸盐指数、k+、Cl-、Mg2+、nA+浓度与建设用地比例、人口密度呈显著的正相关,nO3-
冯媛 +5 more
core
Review of temporal variations of underground medium based on seismic waves [PDF]
As a vibrant and ever-evolving planet, the Earth has a dynamic evolution process spanning more than a dozen orders of magnitude from seconds (e.g., seismic rupture) to millions of years (e.g., mantle convection).
Yi Meng, Zhikun Liu
core +1 more source
智能城市应用矿产资源开发中，水工环地质勘查至关重要。然而，在实际矿产勘查中，水工环地质勘查面临一系列问题，如技术滞后、流程不合理、应用范围窄以及勘查精准度低等，为有效应对，文中提出了一系列防治对策，包括建立绿色勘查技术流程、加强勘查结果的应用和提升勘查的精准度，旨在提高水工环地质勘查效率和准确性，为矿产资源可持续开发提供科学支撑。
小涛 陈, 鑫 李
semanticscholar +1 more source
International Journal of Applied Linguistics, Volume 36, Issue 1, Page 522-539, February 2026.ABSTRACT This paper examines the features of metadiscourse across different teacher moves in university linguistics classroom discourse and the teaching strategies reflected in its use. The results reveal that teachers employ diverse metadiscourse during classroom interactions to support student reasoning.
Jingjie Li, Wenjie Hu
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2008 结构在水平荷载作用下产生水平侧移,竖向荷载作用于水平侧移而产生的内力与侧移增大的现象称为二阶效应,设计时有必要考虑此放大。支撑结构本身的变形特性不同时,这种二阶效应计算公式应有区别,但是目前各国规范只有剪切型结构的二阶效应系数。本文对在水平力和竖向力作用下的框架-弯剪型支撑体系中框架柱的柱端弯矩放大系数,提出了简单的计算公式,用ANSYS有限元计算了各种算例,算例中包括了变截面、变刚度、变轴力等各种形式。比较了有限元结果与近似公式,结果表明提出的公式精度良好。
童根树, 王素俭
doaj