Results 31 to 40 of about 202,793 (158)

基于磁敏感加权成像的pc-ASPECTS评分对后循环急性缺血性卒中预后的预测价值 Predictive Value of pc-ASPECTS Based on Susceptibility Weighted Imaging for Prognosis of Patients with Posterior Circulation Acute Ischemic Stroke

open access: yesZhongguo cuzhong zazhi, 2019
【摘要】 目的 探讨基于SWI的后循环Alberta卒中项目早期CT评分(posterior circulation Alberta stroke program early CT score,pc-ASPECTS)对后循环急性缺血性卒中(acute ischemic stroke,AIS)患者临床3个月预后的预测价值。 方法 回顾性连续收集来自河南省濮阳市人民医院神经内科2014年12月-2016年12月期间未接受静脉或动脉溶栓及血管内再通治疗的后循环AIS患者的临床及影像学数据 ...
张盼盼,刘远洪,闫斌,刘素梅,葛晓航,牛智领,刘乐喜,聂志余
doaj   +1 more source

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

open access: yesInternational 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   +2 more
wiley   +1 more source

Comparing the Effects of Collaborative and Independent Writing on EFL Learners’ Individual Writing Performance: An Intervention Study

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT Collaborative writing has attracted increasing attention in English as a Foreign Language (EFL) instruction due to its potential to enhance learners’ writing competence. However, few studies have examined the comparative effects of collaborative versus independent writing on EFL learners’ individual performance, especially in higher‐order ...
Ting Huang, Chenze Wu, Wenkang Zhang
wiley   +1 more source

Changing trends in prenatal screening and treatment of cytomegalovirus infection in France: 7‐year national cohort study (2017–2023)

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 6, Page 756-763, June 2026.
ABSTRACT Objectives Cytomegalovirus (CMV) is the leading cause of congenital infectious neurosensory impairment. We aimed to present national epidemiological data on maternal CMV infection during pregnancy in France, focusing in particular on primary infection in the periconceptional period or first trimester, and to assess the impact of changes in ...
P. Coste‐Mazeau   +176 more
wiley   +1 more source

18F-FDG PET-CT对滤泡性淋巴瘤诊断及预后评估的作用

open access: yesZhongguo shiyan zhenduanxue, 2012
目的评估18氟-氟代脱氧葡萄糖-正电子发射计算机断层显像(fluorine-18fluorodeoxyglucose positron e-mission tomography,18F-FDG PET/CT)对滤泡性淋巴瘤(follicular lymphoma,FL)患者的诊断及预后的预测价值。方法回顾分析2005年4月至2009年7月我院收治67例初治滤泡性淋巴瘤患者,分别与6周期CHOP±R方案化疗前后行PET/CT检查,评价其对临床分期及预后评估的价值。结果 PET/CT对初始分期准确度较CT高,
孟祥睿   +5 more
doaj  

福建省地震台网预警能力评估

open access: yesDizhen xuebao, 2023
由于常用的均方根值法和噪声功率谱法不能消除不同传感器记录的噪声干扰,为提高噪声水平计算的准确度,本文选用最大概率峰值位移作为背景噪声评估指标。基于可靠的噪声数据,借鉴震级-最大距离监测能力法并考虑预警时效,提出了地震预警最小震级评估方法,系统评估福建三类传感器网及其融合网的地震预警最小震级和预警首报时间。结果表明:测震强震融合网的地震预警最小震级高于单测震网,但明显低于强震网;强震烈度计融合网与单烈度计网的结果相近;三网融合后95%区域的地震预警最小震级约为ML3.2。由于烈度计网比测震和强震网密集 ...
Xiuzhen You   +5 more
doaj   +1 more source

Prospective comparison of diagnostic accuracy of ultrasound, PET/CT and DW‐MRI for preoperative assessment of pelvic lymph nodes in cervical cancer patients: results of the CANNES trial

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 6, Page 836-851, June 2026.
ABSTRACT Objective To determine whether ultrasound is non‐inferior to positron‐emission tomography/computed tomography (PET/CT) and diffusion‐weighted magnetic resonance imaging (DW‐MRI) in terms of overall diagnostic accuracy for the preoperative assessment of pelvic lymph‐node status in cervical cancer.
F. Frühauf   +14 more
wiley   +1 more source

企业价值评估模型与评估过程 [PDF]

open access: yes, 2001
企业经营追求价值最大化 ,价值评估对企业改进管理、提升价值有重要意义。较通行的两种评估模型是 :现金流量折现模型和经济利润模型 ,各有比较优势。企业价值评估必须通过对企业历史绩效进行分析 ,预测绩效 ,估计资金成本 ,进行连续价值预测 ...
沈维涛
core  

基于传输性能指标预测的光缆可用性评估

open access: yes, 2016
为准确评估既设光缆未来任务时间是否适用于高性能光端传输设备,提出一种基于传输性能指标预测的光缆可用性评估方法。在构建组合模型准确预测光缆性能指标的基础上,根据光端设备对线路允许损耗变化范围的要求评估光缆的可用性。通过实例验证说明了基于性能指标预测的光缆可用性评估方法的准确性和有效性 ...
李卫   +5 more
core   +1 more source

Representation of obligate groundwater‐dwelling copepod diversity in European protected areas

open access: yesConservation Biology, Volume 40, Issue 3, June 2026.
Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli   +7 more
wiley   +1 more source

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