讲座人简介：李用声，华南理工大学bv1946伟德二级教授，博士生导师。主要从事非线性发展程与无穷维动力系统的研究工作，涉及的方程有非线性色散方程和方程组（如Schrödinger方程及其方程组）、浅水波方程、流体力学方程组等等，研究内容包括这些方程和方程组的解的存在性、唯一性、爆破性、衰减性、整体吸引子的存在性及其分形维数估计等。在国内外重要学术刊物上发表论文100篇，SCI收录约80篇。先后主持5项国家自然科学基金项目，曾被评为湖北省跨世纪学术骨干，作为主要完成人获得过国防科工委科技进步一等奖，曾获得全国优秀博士学位论文提名奖指导老师称号。

讲座简介：In this talk we discuss the well-posedness and large time behavior of strong solutions for the compressible Oldroyd-B model. First, by exploiting the harmonic analysis tools, especially Littlewood-Paley theory, we prove that the problem is globally well-posed for small initial data in Besov spaces with large amplitude and low regularity. Then, we obtain the optimal decay rates under some suitable condition involving only the low frequency of the initial data.