Results 61 to 70 of about 52,467 (200)

微针定位负压提取血栓系统对心肌梗塞的临床治疗意义

open access: yes亚洲临床医学杂志, 2019
心肌梗塞是一种较难治愈的疾病,本文根据微针定位负压提取血栓系统的特性和在心肌梗塞患者治疗中的实际效用分析该系统的临床治疗效果,通过分析心肌梗塞患者在实际治疗中引入微针定位负压提取血栓系统治疗后的治愈时间和情况,对微针定位负压提取血栓系统在心肌梗塞中的最终疗效做出合理的分析。
炳兴 张   +4 more
semanticscholar   +1 more source

The Emotional Valence Paradox in Social media: A Computational Linguistic Analysis of How Sentiment, Emotion, and Content Domain Predict Social Comparisons on Rednote

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT This computational linguistic study analyzes 8743 Rednote posts to examine how sentiment, emotion, and content domain collectively shape social comparison dynamics on social media. We identify four key findings: (1) an emotional gradient, where upward comparison content exhibits the highest sentiment scores and downward comparison the lowest; (
Michelle Mingyue Gu   +7 more
wiley   +1 more source

基于复合特征的GIS振动信号特征提取方法

open access: yesGaoya dianqi, 2021
对GIS的振动信号进行分析可以及时有效的发现设备中存在的故障。在GIS设备的故障诊断中,特征提取是最为关键的步骤,文中针对单一种类的特征提取方法提取到的特征容易缺乏特异性这一缺点,提出了基于复合特征的GIS振动信号特征提取方法。首先将奇异值分解和基于总体最小二乘准则的旋转不变技术这两种时频法结合起来对振动信号中具有明确物理意义的特征量进行提取,对于没有明确物理意义的特征量,通过数据序列法中的变分模态分解和多重分形来对其进行提取;然后将这两种特征量组合得到新的特征量 ...
马星光   +5 more
doaj  

Synthesizing Empirical Research on Learner Metacognition in Second Language Writing

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT Despite considerable research interest in learner metacognition in second language (L2) writing, there is not yet a review that synthesizes the existing empirical findings and discusses their implications. To fill the void, this systematic review synthesized 39 empirical studies on learner metacognition in L2 writing and examined their salient
Chen Li, Icy Lee, Zhicheng Mao
wiley   +1 more source

响应面优化氯化胆碱-丙三醇体系提取芝麻蛋白工艺条件 "Response surface optimization of the extraction process conditions for sesame protein using choline chloride-glycerol system"

open access: yesZhongguo youzhi
为提高芝麻油副产物芝麻饼粕中蛋白质的综合利用率,以芝麻粕为原料,选用氯化胆碱-丙三醇(物质的量比1∶ 3)体系(低共熔溶剂,DES)提取芝麻蛋白,通过单因素试验和响应面试验优化提取工艺条件,分析最优条件下提取的芝麻蛋白的功能特性,并采用傅里叶变换红外光谱和扫描电子显微镜对芝麻蛋白进行结构表征,同时与传统碱溶酸沉法提取工艺进行对比。结果表明:DES提取芝麻蛋白的最优条件为DES含水量10%、固液比1∶ 29.4、提取温度59.0 ℃、提取时间1 h、搅拌速度 750 r/min,在此条件下芝麻蛋白提取率为(
曹培换1,张晨霞1,刘燕2,马宇翔1,刘华敏1,郑永战1,3 "CAO Peihuan1,ZHANG Chenxia1,LIU Yan2,MA Yuxiang1, LIU Huamin1,ZHENG Yongzhan1,3"
doaj   +1 more source

Partisans' evaluations of unconstitutional legislative activity

open access: yesPolicy Studies Journal, EarlyView.
Abstract In this research note, we examine whether public evaluations of a policy depend on the constitutionality of the process by which that policy was passed. We observe whether people's views depend on accusations that a policy was passed in violation of a state constitution's single subject rule, and whether the effect of that accusation depends ...
Kevin K. Banda   +2 more
wiley   +1 more source

"fordi før så skreiv æ Å-G". En studie om andreklassingers valg av stavemåter.

open access: yes, 2023
The purpose of this master's thesis has been to look at the choices students in Year 2 make when spelling words. The students participating in this research are in the transition between phonological and orthographic writing, and the study will focus on how these students adopt different spelling strategies. The assignment's data material is taken from
openaire   +1 more source

基于特征提取的图像质量评价及计算机辅助诊断

open access: yes实用医学研究, 2019
随着信息技术的快速发展,数字图像在人们生活中发挥着重要的作用,数字图像技术中的特征提取也逐渐成为人们较为关注的点。在医学影像技术中加强对特征提取的研究也是很有必要的。论文主要分析了计算机辅助诊断在医学影像中的应用和特征提取与图像质量评价。
蕊 王
semanticscholar   +1 more source

Topics as Outcomes: Modeling the Influence of Intergovernmental Grants on Policy Diffusion

open access: yesPolicy Studies Journal, EarlyView.
ABSTRACT Intergovernmental grants stimulate the diffusion of policy reforms, as the federal government provides states with a financial incentive to adopt policies aligned with federal priorities. Less is known about the extent to which these grants also stimulate horizontal diffusion across states.
NaLette Brodnax, Sarah James
wiley   +1 more source

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