摘要：In low-frequency elastic wave through-the-earth communication system,because of multipath transmission caused by characteristics of the layered earth,the time domain equalizer is different from other wireless communication systems.A modified LMS algorithm of variable step size is proposed based on improvement of traditional *** the base of principle and simulation analysis,the improved Least Mean Square(LMS)algorithm is analyzed and the performances are compared between the improved LMS algorithm and traditional LMS *** the improved algorithm,the contradiction between convergence speed and the steady-state error is considered at the same ***,the improved algorithm has good convergence properties and channel-tracking performance.

摘要：目的:构建公立研究型肿瘤专科医院高质量发展评价指标体系。方法:基于国家发布的《公立医院高质量发展评价指标(试行)》和相关文献研究构建原始指标库,借助德尔菲法函询中国科学院合肥肿瘤医院医疗、卫生领域的专家进行指标筛选,并使用层次分析法计算各级指标权重。结果:构建出公立研究型肿瘤专科医院高质量发展评价指标体系,包含以党建引领、能力提升、结构优化、创新增效和文化聚力5个一级指标,17个二级指标,其中一级指标权重系数分别为0.2095、0.1976、0.1937、0.1976和0.2016。结论:本研究构建的公立研究型肿瘤专科医院高质量发展评价指标体系设计合理,体现多维度、多方面的评价特点,重点指出党建引领和患者与医务人员的满意度是公立研究型肿瘤专科医院高质量发展评价的重点。