Results 21 to 30 of about 1,452,075 (137)
Analysis on the reliability of reanalysis surface flux datasets for China(我国范围内多个再分析地表通量数据集的可信度分析)
Zhejiang Daxue xuebao. Lixue ban, 2006 利用NCEP/NCAR (NCEP1)、NCEP/DOE(NCEP2)及ECMWF的再分析地表通量（感热和潜热通量）资料，以及由经验公式计算得出的我国地表通量的气候值（以下简称气候值），采用可视化分析、统计分析和天气气候学诊断方法，分析了三组再分析数据集的地表感热、潜热通量，以及基于地表热通量的鲍文比和地表热源在不同季节的空间分布和年变化，并与气候值做了比较.结果显示，尽管存在一些共同的问题（如三组再分析数据集潜热通量的值明显偏大），但不同再分析地表通量所反映的我国不同季节地表感 ...
HANXing(韩兴), TANGYan-bing(汤燕冰)
doaj +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2023 目的基于CT冠状动脉造影图像计算虚拟血流储备分数使冠状动脉病变的功能无创评估成为可能，目前尚不清楚斑块是否会影响基于CTA虚拟计算的冠状动脉血流储备分数，本研究以有创FFR为参考标准，分析斑块对CT-QFR值的影响。方法：回顾性研究纳入了在60 d同时接受CT冠状动脉造影（CCTA）和血流储备分数（FFR）检查的108例疑似CHD患者。通过虚拟血流计算相关软件分析CCTA图像，获得目标血管的虚拟血流储备分数（CT-QFR）、目标血管斑块的定量及定性分析，其中包括总斑块体积、斑块负荷、钙化斑块体积 ...
陈柳丹 +3 more
doaj +2 more sources
Wildlife Letters, EarlyView.FoxWatch is a user‐friendly analytical workflow that converts camera‐trap detections into dependable estimates of fox abundance. The user‐friendly Shiny R app standardizes data preparation, employs Simultaneous‐Count Models modeling, and displays uncertainty in clear, comprehensible outputs. By connecting field monitoring with decision‐making, FoxWatch
Duminda S. B. Dissanayake +1 more
wiley +1 more source
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 +18 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2020 目的评价尿有形成分分析在住院患者尿路感染(UTI)筛查中的应用价值。方法对2018年4月-2018年10月于大连大学附属中山医院住院疑似尿路感染的患者清洁中段尿标本497例进行尿有形成分分析、尿定量细菌培养及菌种鉴定。结果尿有形成分分析仪检测白细胞数和细菌数的阈值为白细胞数64个/μL和细菌数880.6个/μL,以该阈值筛检住院患者尿路感染,其敏感度分别为80.00%和85.19%,特异度分别为79.28%和87.39%。白细胞计数和细菌计数ROC曲线下面积分别为0.860和0.917。结论 UF ...
唐祯臻, 范世珍, 林洁, 于波海
doaj
Intact coastal nursery rearing amid climate‐driven phenological shifts in threatened salmon
Conservation Biology, EarlyView.Abstract Literature linking phenology to climate has proliferated in recent decades and shows that climate change has reorganized seasonal opportunities worldwide. However, this literature often quantifies changes in point measures of timing (e.g., beginnings and peaks) without context about duration (e.g., rearing season length) or performance (e.g ...
Stuart H. Munsch +8 more
wiley +1 more source
, 2019 【目的】解决科技大数据数据源分散、质量不高、内容单薄等问题。【方法】采用数据清洗、实体对齐、实体字段融合、冲突检测等增值计算方法, 设计开发一套科技大数据增值丰富化的工具。【结果】通过本文研发的丰富化工具, 在人员、机构、会议、期刊实体及实体关系层面实现实体数据对齐, 实体字段内容增加5-10倍, 实体分析维度提升2-3倍。【局限】增值数据的及时性、规范性需要结合服务需求在实际应用中不断优化提升。【结论】研究成果提升了科技大数据知识发现平台以及相关情报智能分析系统的数据服务维度及深度。
常志军 +4 more
core +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2012 通过引进间断Galerkin有限元方法的思路，给出了 一维和二维广义神经传导方程的间断Galerkin有限元解法，并对这种数值解法进行了相应的误差分析，得到其精度为O（Δt+hk+1）；通过对数值例子及其结果的分析，验证了数值计算方法的有效性.
ZHUHuan(朱欢), SUNFang-yu(孙方裕)
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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 +3 more
wiley +1 more source
Integrating migratory connectivity data into the conservation of Australian sharks and rays
Conservation Biology, EarlyView.Abstract Understanding migratory connectivity is important for conserving highly mobile marine species facing escalating threats. Establishing baseline information on migratory connectivity is necessary for identifying species and regions requiring transboundary cooperation for their conservation.
Diego F. Bezerra +9 more
wiley +1 more source