目的探究数字健康技术对老年轻度认知障碍患者的干预效果,以期为数字健康技术在老年轻度认知障碍患者中的临床应用提供循证依据。方法计算机检索Web of Science、PubMed、Embase、Cochrane Library、中国知网、万方、中国生物医学文献...目的探究数字健康技术对老年轻度认知障碍患者的干预效果,以期为数字健康技术在老年轻度认知障碍患者中的临床应用提供循证依据。方法计算机检索Web of Science、PubMed、Embase、Cochrane Library、中国知网、万方、中国生物医学文献数据库7个中英文数据库,检索时限从建库至2025年4月26日。纳入数字健康技术对老年轻度认知障碍患者干预的随机对照试验,由2名研究者独立进行筛选文献、评价质量并提取资料,采用RevMan 5.3软件进行Meta分析。结果共纳入12项随机对照试验,包括602例老年轻度认知障碍患者。与常规认知训练或护理措施相比,数字健康技术干预可以提高老年轻度认知障碍患者的总体认知功能(MD=2.95,95%CI 2.08~3.81,P<0.01),改善延迟记忆力(SMD=0.42,95%CI 0.16~0.69,P<0.05)。但在改善日常生活自理能力(SMD=-0.68,95%CI-1.40~0.04,P>0.05),提高注意力(MD=-4.45,95%CI-9.26~0.37,P>0.05),改善执行功能(MD=8.57,95%CI-6.38~23.53,P>0.05)、提高短期记忆(SMD=0.06,95%CI-0.20~0.33,P>0.05)、提高生命质量(MD=1.43,95%CI-0.47~3.33,P>0.05)、改善抑郁情绪(MD=-0.88,95%CI-2.54~0.78,P>0.05)方面,干预效果尚不明确。结论数字健康技术干预有助于提升老年轻度认知障碍患者的总体认知功能及长期记忆能力,在提高日常生活自理能力、注意力、执行功能、短期记忆、改善生命质量及缓解抑郁方面的效果仍需更多高质量研究加以验证。展开更多
Funk metrics are a kind of important Finsler metrics with constant negative flag curvature. In this paper, it is proved that any isoparametric hypersurface in Funk spaces has at most two distinct principal curvatures....Funk metrics are a kind of important Finsler metrics with constant negative flag curvature. In this paper, it is proved that any isoparametric hypersurface in Funk spaces has at most two distinct principal curvatures. Moreover, a complete classification of isoparametric families in a Funk space is given.展开更多
In this paper,we study the growth of fundamental groups of Finsler manifolds.Some relationships between the growth of fundamental groups and the volume growth of universal covers of Finsler manifolds are found.Some es...In this paper,we study the growth of fundamental groups of Finsler manifolds.Some relationships between the growth of fundamental groups and the volume growth of universal covers of Finsler manifolds are found.Some estimates of entropies and the number of generators of fundamental groups of Finsler manifolds are given.Moreover,the quasi-isometry and the geometric norm in Finsler geometry are considered.展开更多
We prove that for a compact Finsler manifold M with nonnegative weighted Ricci curvature,if its first closed(resp.Neumann)eigenvalue of Finsler-Laplacian attains the sharp lower bound,then M is isometric to a circle(r...We prove that for a compact Finsler manifold M with nonnegative weighted Ricci curvature,if its first closed(resp.Neumann)eigenvalue of Finsler-Laplacian attains the sharp lower bound,then M is isometric to a circle(resp.a segment).Moreover,a lower bound of the first eigenvalue of Finsler-Laplacian with Dirichlet boundary condition is also estimated.These generalize the corresponding results in recent literature.展开更多
By using Darboux transformations, the authors give the explicit construction for local iso-metric immersions of space forms Mn(c) into space forms M2n-1(c + ε2) via purely algebraicalgorithm.
基金supported by National Natural Science Foundation of China (Grant No. 11471246)Anhui Provincial Natural Science Foundation (Grant No. 1608085MA03)Natural Science Foundation of Higher Education in Anhui Province (Grant No. KJ2014A257)
文摘Funk metrics are a kind of important Finsler metrics with constant negative flag curvature. In this paper, it is proved that any isoparametric hypersurface in Funk spaces has at most two distinct principal curvatures. Moreover, a complete classification of isoparametric families in a Funk space is given.
基金supported by National Natural Science Foundation of China (Grant No.10871171)
文摘In this paper,we study the growth of fundamental groups of Finsler manifolds.Some relationships between the growth of fundamental groups and the volume growth of universal covers of Finsler manifolds are found.Some estimates of entropies and the number of generators of fundamental groups of Finsler manifolds are given.Moreover,the quasi-isometry and the geometric norm in Finsler geometry are considered.
基金supported by National Natural Science Foundation of China(Grant No.11171253)the Natural Science Foundation of Ministry of Education of Anhui Province(Grant No.KJ2012B197)
文摘We prove that for a compact Finsler manifold M with nonnegative weighted Ricci curvature,if its first closed(resp.Neumann)eigenvalue of Finsler-Laplacian attains the sharp lower bound,then M is isometric to a circle(resp.a segment).Moreover,a lower bound of the first eigenvalue of Finsler-Laplacian with Dirichlet boundary condition is also estimated.These generalize the corresponding results in recent literature.
基金Project supported by the National Natural Science Foundation of China (No.10271106)the Science Foundation of the Ministry of Education of Chinathe Natural Science Foundation of Zhejiang Province, China.
文摘By using Darboux transformations, the authors give the explicit construction for local iso-metric immersions of space forms Mn(c) into space forms M2n-1(c + ε2) via purely algebraicalgorithm.
