Results 21 to 30 of about 761,185 (165)
The Development and Validation of the Chinese Vocabulary Levels Test
ABSTRACT In response to the increasing need for effective Chinese vocabulary assessments, this study developed the Chinese Vocabulary Levels Test (CVLT), a test designed for intermediate‐level Chinese as a second or foreign language (CSL/FL) learners, based on the vocabulary lists (levels 4–6) from the Chinese Proficiency Grading Standards for ...
Shiwei Qi, Ailan Fu
wiley +1 more source
ABSTRACT Cross‐scale assembly of metal (sub) nanoparticles and/or single atoms into millimeter/nanostructured metal monolithic catalysts (Min‐SMCs) is highly appealing for sustainable water cleanup, due to energy‐efficient catalyst recyclability, high infrastructure compatibility, and low metal‐releasing risks.
Jia‐Cheng E. Yang +4 more
wiley +1 more source
重点对地表水质预测模型的几种人工智能方法进行了评述,具体说明了BP神经网络水质预测模型、地表水COD灰色预测模型、时间数列预测方法及WASP5模型系统等方法的原理和特点。并提出地表水质预测模型WASP5与GIS系统集成的趋势,建立水质自动监测系统是我国水质现状和社会发展的需要,并分析了发展水质自动检测系统的方法及可行性。
王志红, 孙超
doaj
ABSTRACT Lung cancer is one of the most common and deadly malignancies worldwide. Although immune checkpoint inhibitors, including PD‐1/PD‐L1 blockers, have benefited a subset of patients, response rates remain limited, and recurrence is frequent because of the immunosuppressive tumor microenvironment (TME), characterized by hypoxia and dysregulated ...
Yi Ma +6 more
wiley +1 more source
嘉陵江是上长江上游的重要支流,是长江三峡水库重要的洪水和泥沙来源地,也是“长治 “工程重点实施对象.通过对典型支流和干流沿程主要站降雨径流和降雨输沙模型的应用研 究,分析了水保措施的减水减沙效益.同时应用统计预测模型、BP网络模型、双累积曲线预测模型,对嘉陵江流域未来水沙变化趋势进行了预测.
张明波 +3 more
doaj +2 more sources
ABSTRACT Objective To investigate the incidence of pre‐eclampsia (PE) and the predictive performance of the Fetal Medicine Foundation (FMF) first‐trimester PE screening algorithm across pregnancies conceived using assisted reproductive technology (ART), after ovulation induction (OI) and through spontaneous conception (SC).
A. S. L. Kjaer +23 more
wiley +1 more source
水质模型是水体污染物迁移转化模拟的主要工具,在水环境保护、水污染防治等领域得到了广泛的应用。按照J2EE标准,在提高软件的可扩展性、可维护性和代码复用率指导思想下,以中间件技术的表现形式的应用框架为基础,以零维水质模型为代表,采用MVC软件设计模式,实现了水质预测中间件,建立了面向Web的水质预测系统,并使用WebGIS技术可视化水质模拟结果,该系统缩短了模型建模周期,提高了模型的使用效率。
王晓辉 解建仓 马斌 司毅铭 汪妮
doaj
Effects of parachute science on local research capacity 降落伞科学对当地研究能力的影响
Abstract Strengthening research capacity is essential to address the global biodiversity crisis. Yet, parachute science often undermines this goal, and its prevalence, costs, and benefits are unclear. We analyzed 13,502 publications on primate research that we extracted from Scopus (1960–2022) to evaluate the effects of parachute science on local ...
Li Yang +11 more
wiley +1 more source
近年来,水体污染问题日益突出,给河道环境造成巨大压力,故河道水环境破坏问题亟待解决。机器学习是一种基于大量监测数据的水质预测预警方法,是河道治理的新途径。【目的】本文旨在对比不同模型对不同水质指标的预测能力。【方法】本文以长江中下游平原某河流断面为例,首先通过显著性分析和主成分分析筛选出主要水质影响因子,随后根据自动监测站点数据选用支持向量机(SVM)和长短期记忆网络(LSTM)、门控循环单元(GRU)、时间卷积网络(TCN)神经网络模型对水质水平进行模拟。【结果】氨氮和溶解氧 ...
LÜ Ting +3 more
doaj +1 more source
洛河是黄河的一条重要支流。本文采用洛河氵状头水文站1965~2003年共计39年的实测径流资料,依据线性平稳随机模型的理论建立了一阶自回归模型;运用季节性随机模型的理论方法建立洛河氵状头站月径流量典型解集模型。经实用性检验,模拟序列与实测序列各项估计参数吻合良好,符合精度要求 ...
徐利岗, 周宏飞
core

