Results 91 to 100 of about 931 (139)

人类活动加剧三峡库区湿地景观破碎化

Shuitu Baochi Xuebao
目的当前针对三峡库区湿地景观格局动态变化及其多维驱动因子的耦合研究仍较为欠缺，通过定量解析三峡库区湿地景观的时空异变规律及其驱动机制，以此突破传统研究在动态追踪与交互效应量化方面的局限。方法基于库区1980—2020年多源遥感影像，结合转移矩阵、标准差椭圆和景观指数等方法揭示演变特征，并采用地理探测器模型定量探测自然-人为因素对湿地变化的驱动贡献度及其交互效应。结果1）1980—2020年三峡库区湿地面积减少154.59 km²，其中人工湿地中水田减少7.82%，水库坑塘增加73.85 ...
张洪珊, 李书, 王彦丹, 王云琦, 张建聪, 李俊杰, 程士宝   +6 more
doaj  

[Deep learning algorithms for intelligent construction of a three-dimensional maxillofacial symmetry reference plane]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Zhu Y, Shen H, Wen A, Gao Z, Qin Q, Shan S, Li W, Fu X, Zhao Y, Wang Y.   +9 more
europepmc   +1 more source

[ERI3 expression is elevated in hepatocellular carcinoma and correlates with poor patient prognosis]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zhao X, Wang H, Song Y, Yuan S, Zhang Z, Zhou X, Li S, Li X, Li F.   +8 more
europepmc   +1 more source

基于InVEST模型的蒲河流域景观格局及生境质量时空演变分析

Shuitu Baochi Xuebao
[目的] 通过对景观生态格局和生境质量的时空动态分析,深入研究沈阳市蒲河流域实施水土保持措施前后的生境质量响应情况,旨在为小型流域的水土保持策略提供科学依据,以促进生态经济的协同增长和区域生态的持续健康发展。[方法] 基于蒲河流域2000年、2010年、2020年的土地利用数据和数字高程模型(DEM)等数据,结合FRAGSTATS和InVEST模型,运用土地利用转移矩阵、景观格局指数、生境质量及生境退化度对土地利用变化进行分析,探究响应机理。[结果] (1)在2000—2010年期间 ...
刘佳依, 许大为, 徐嘉
doaj  

[Exploring the Core Influencing Factors in the Cultivation of Critical Thinking Skills Among Medical Students Using the Grounded Theory and the Decision-Making Trial and Evaluation Laboratory]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Wu Y, He W, Wang D, Wang K.
europepmc   +1 more source

[Enhancement of radiomics-based machine learning models for predicting efficacy of high-intensity focused ultrasound ablation of uterine fibroids using undersampling methods]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Cui Y, Feng M, Yao L, Yan J, Li W, Huang Y.   +5 more
europepmc   +1 more source

[Progress of scRNA-seq technology in nasopharyngeal carcinoma research]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Zheng B, Jin G.
europepmc   +1 more source

[A method for emotion transition recognition using cross-modal feature fusion and global perception]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Jie L, Zou Y, Li Z, Lyu B, Zheng W, Li M.   +5 more
europepmc   +1 more source

[A time-frequency transform and Riemannian manifold-based domain adaptation method for motor imagery in brain source space]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Qi Q, Li M.
europepmc   +1 more source

[Development and evaluation of a positioning system for radiotherapy patient based on structured light surface imaging]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wang Y, Zhang G, Yan X, Yang G, Wang W, Zhu J, Wang L.   +6 more
europepmc   +1 more source