Results 11 to 20 of about 137,651 (153)

2002—2021年上海市脑血管病死亡率变化趋势及其对期望寿命的影响分析Trends in Cerebrovascular Disease Mortality and Its Impact on Life Expectancy in Shanghai from 2002 to 2021

Zhongguo cuzhong zazhi
目的 分析2002—2021年上海市脑血管病死亡率变化趋势及其对期望寿命的影响，为制订脑血管病精准防控策略提供依据。 方法 利用上海市疾病预防控制中心死亡登记信息系统收集2002—2021年上海市户籍居民脑血管病死亡数据，运用Joinpoint回归模型分别描述全人群、不同性别、不同年龄组、不同地区、不同分型脑血管病死亡率的变化趋势。采用Arriaga寿命表分解法，量化不同年龄组及不同性别急性脑血管病与脑血管病后遗症死亡率下降对期望寿命增长的贡献。 结果 2002—2021年 ...
蔡任之, 邵海妍, 陈蕾, 钱耐思, 李琦, 晋珊, 杨之雨, 虞慧婷CAI Renzhi, SHAO Haiyan, CHEN Lei, QIAN Naisi, LI Qi, JIN Shan, YANG Zhiyu, YU Huiting
doaj   +1 more source

The oxygen uptake capacity of freshwater fish evolves to favour hypoxia tolerance in lentic species but locomotion capacity in lotic species

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Oxygen supply capacity (α) is a physiological trait hypothesized to shape the metabolic niche and biogeography of aquatic breathers, yet how natural selection targets α remains unclear.
Na Zhang, Yong‐Fei Zhang, Ping Xiang, Yan Tang, Cheng Fu, Xu Pang, Shi‐Jian Fu   +6 more
wiley   +1 more source

热带太平洋海洋叶绿素对SST的影响及其机理分析——基于ROMS的海洋物理-生态模式模拟

Haiyang yu huzhao
关于热带太平洋海洋叶绿素对海表面温度(sea surface temperature, SST)年平均场和年际变率的影响，学术界存在着广泛的争议，模拟结果表现出明显的模式依赖性；且对于季节变化上叶绿素如何影响SST的关注较少。为深入研究热带太平洋叶绿素的气候效应，本文基于区域海洋模式系统(Regional Ocean Modeling System, ROMS)构建了海洋物理-生态耦合模式；通过在敏感性试验中设置不同的叶绿素浓度分布，分析了叶绿素对热带太平洋SST的年平均和季节变化的影响。结果表明 ...
张 雯哲, 张 荣华, 高 川, 田 丰, 于 洋, 王 宏娜   +5 more
doaj   +1 more source

Comparative species distribution model framework for marine conservation and its application to loggerhead turtles in the Mediterranean

Conservation Biology, EarlyView.
Abstract Modeling species distributions in dynamic pelagic environments remains challenging, particularly for wide‐ranging and highly mobile species when there is limited guidance on model performance. This limitation constrains the effective use of species distribution models (SDMs) in marine conservation, where robust and transferable predictions are
E. Pasanisi, F. Maffucci, F. Atzori, M. Azzolin, I. Campana, L. Carosso, A. Castelli, M. Costantino, R. Crosti, L. David, N. Di‐Meglio, M. Farina, N. Fraija‐Fernández, O. Garcia‐Garin, M. Gazo, M. Gregorietti, F. Grossi, S. Hochscheid, R. Míguez‐Lozano, A. Moulins, D. S. Pace, M. Pecoraro, E. Pignata, J. A. Raga, M. Roul, E. Santini, G. Sarà, A. Scuderi, R. Teti, P. Tepsich, M. Vitale, M. Vighi, A. Arcangeli   +32 more
wiley   +1 more source

一种可预加应力的薄膜接触角测量系统

, 2013
本发明公开了一种可预加应力的薄膜接触角测量系统，包括：夹膜单元，所述夹膜单元为2个以上，用于夹持待测薄膜；径向移动单元，用于在所述待测薄膜的径向方向移动所述夹膜单元；应力检测单元，用于测量所述夹膜单元在夹持待测薄膜并沿径向移动过程中所受到的拉力，从而测得对所述待测薄膜施加的预应力大小。本发明通过径向移动单元在径向方向移动夹膜单元，可以使2个以上的夹膜单元在径向方向同时移动，并通过设置在夹膜单元上的应力检测单元检测所受到的拉力 ...
王子千, 赵亚溥
core   +2 more sources

Forecasting the costs of residential construction based on support vector machine and least squares-support vector machine(基于SVM和LS-SVM的住宅工程造价预测研究)

Zhejiang Daxue xuebao. Lixue ban, 2016
为在方案设计初期与工程造价相关信息很少的条件下，准确快速地预测住宅工程造价，在分析既往相关理论和方法优劣的基础上，选取支持向量机构建住宅工程造价预测模型，并通过主成分分析对原始数据进行降噪处理.选取住宅工程造价预测指标集与样本，对输入指标的数据进行主成分分析，消除指标相关性的同时对原始数据降维，将处理后的数据分别导入到“标准支持向量机”和“最小二乘支持向量机”模型中进行训练和预测，并对预测结果进行对比分析，选取较为合理的预测模型，通过参数寻优进一步优化预测效果.所构建预测模型的相对误差均控制在±7%以内，
QINZhongfu(秦中伏), LEIXiaolong(雷小龙), ZHAIDong(翟东), JINLingzhi(金灵志)   +3 more
doaj   +1 more source

Evaluating a structured expert elicitation approach for adaptive conservation management based on lessons from five years in practice

Conservation Biology, EarlyView.
Abstract Adaptive management of threatened species relies on having ex ante estimates of species’ responses to different interventions. Structured expert elicitation is often used to generate these estimates, but comparisons of these expert‐predicted outcomes with observed results are rare.
Helen J. Mayfield, James Brazill‐Boast, Mick Andren, Michiala Bowen, Adam Fawcett, Trent Forge, Luke Foster, Ross Goldingay, Paul Hillier, Meagan Hinds, Simon Lee, Erica Mahon, Martine Maron, Doug Mills, Thomas Rowell, Stephanie Stuart, Caren Taylor, Grant Webster, Nicole A. Hansen   +18 more
wiley   +1 more source

Subspecies taxonomy reflects social and geographic patterns of taxonomic effort in tetrapods

Conservation Biology, EarlyView.
Abstract Subspecies have been used in conservation biology to account for intraspecific patterns in genetic diversity, which is crucial to long‐term population viability. Although over 3200 subspecies are currently assessed by the International Union for Conservation of Nature Red List, their biological relevance remains controversial.
Jhonny J. M. Guedes, José Alexandre F. Diniz‐Filho, André V. L. Freitas, Mario R. Moura   +3 more
wiley   +1 more source

Artificial Intelligence for Language Learning: A Systematic Review of its Design, Theoretical Foundations, Implementation, and Impact

International Journal of Applied Linguistics, EarlyView.
ABSTRACT Although the use of AI technologies (e.g., chatbots and automated writing evaluations (AWE)) has gained considerable attention in language learning fields in recent years, how AI technologies have been designed and implemented in language learning education, as well as their effectiveness, is understudied.
Shen Qiao, Michelle Mingyue Gu, Chaoqun Lu   +2 more
wiley   +1 more source

Learning Styles, Engagement and Anxiety in AI‐Mediated Writing: A Multimodal Feedback Study

International Journal of Applied Linguistics, EarlyView.
ABSTRACT Artificial intelligence (AI) tools now permeate English academic writing. However, evidence on how feedback modalities align with student differences and with psychological mechanisms remains limited. Prior work often reduced learning styles to simple matches with delivery modes and treated learning engagement and writing anxiety as peripheral.
Yi Ren, Wei Lun Wong, Jessie Barrot, Lawrence Jun Zhang   +3 more
wiley   +1 more source