Results 21 to 30 of about 61,733 (199)
大数据, 2022 情感分析是对信息情感倾向的挖掘，主要用于舆情监测、商品评论分析以及信息检索等方面。随着社交媒体的快速发展，文本数据量呈现爆炸性增长，文本情感分析成为自然语言处理领域重要的研究热点之一。与此同时，由于情感数据具有海量、时变、非结构性、强关联性的特点，能够直观高效地呈现情感倾向的可视分析技术在这个领域得到广泛应用。回顾了近年来的情感可视分析研究，从表现形式——“主题词”“关联”“演变”“时空分布”4个方面阐述文本情感可视分析方法，并对未来情感分析技术及文本情感可视分析研究进行展望。
张伶俐 +6 more
doaj +1 more source
EU Policy‐Making in the Digital Age: Major Trends and Insights From Public Policy Research
European Policy Analysis, EarlyView.ABSTRACT Has digitalization changed policy‐making dynamics at the European Union (EU) level? To investigate this issue, this article presents a scoping review of the literature on EU digital policy‐making. While much scholarship adopts a ‘Governance’ approach, two conceptually rich strands emerge: critical approaches, and digital sovereignty.
Chloé Bérut
wiley +1 more source
European Policy Analysis, EarlyView.ABSTRACT This article addresses a critical issue in evidence‐informed policymaking: the challenge of translating knowledge into policy outputs amidst the complex interplay between research and politics. It discusses the concept of “blocked learning,” where individual‐level learning fails to scale up to organizational and policy levels, thus impeding ...
Thenia Vagionaki
wiley +1 more source
European Policy Analysis, EarlyView.ABSTRACT Policy process research has excelled in explaining structural policy change within national settings, but extensions and applications to the EU level have long proven challenging for scholars. Given that the EU is currently experiencing its longest period of Treaty stability since the 1980s—having evolved into a sui generis political system ...
Vassilis Karokis‐Mavrikos
wiley +1 more source
Digital Rights Activism in Multilevel Governance
European Policy Analysis, EarlyView.ABSTRACT Multilevel governance (MLG) without a clear hierarchical structure can create power imbalances among various actors, particularly in settings with overlapping jurisdictions and policy areas. This dynamic is especially pronounced in Internet governance, which faces a complex interplay of domestic laws, state interdependence, and heightened ...
Alison Harcourt
wiley +1 more source
The Distributive Consequences of Active Welfare Policies in Europe
European Policy Analysis, EarlyView.ABSTRACT This article examines the distributive consequences of active welfare policies in Europe by analysing tier‐specific investments in individualised employment services across four European welfare states: Denmark, Germany, the Netherlands and the United Kingdom.
Deborah Jackwerth‐Rice +1 more
wiley +1 more source
Growing Demand and Uneven Supply: Eight Years of Nature Education in China 需求增长与供给不均:中国自然教育八年发展回顾
Integrative Conservation, EarlyView.ABSTRACT This study examines the role of nature education in advancing conservation and sustainability in China between 2014 and 2023. Drawing on national survey reports and historical–comparative methods, it analyses the dynamics of public demand, institutional supply, and practitioner capacity.
Qi Yunxi, Lyu Xiang, Huang Yu
wiley +1 more source
Integrative Conservation, EarlyView.This research reveals the functional stability of mixed species foraging flocks (MSF) and their foraging height change with different taxonomic differences along the elevational gradient at Knuckles Montane Reserve, Sri Lanka. This offers new insights into how MSFs sustain with the elevational gradients supporting the altitudinal shifting species ...
Vimukthi. R. Gunasekeara +3 more
wiley +1 more source
Zhongguo cuzhong zazhi颈动脉粥样硬化（carotid atherosclerosis，CAS）易损斑块是缺血性卒中的主要病因之一，其破裂与脱落在缺血性卒中的发生与发展中起着至关重要的作用。早期识别颈动脉狭窄程度和易损斑块成分特征，进行针对性防治，可改善患者预后。多模态MRI不仅能清晰显示CAS易损斑块的形态与大小，还可借助多参数成像技术评估斑块成分、炎症反应及血流动力学参数等，从而实现对斑块的全面评估。本综述通过回顾多模态MRI在CAS易损斑块评估中的应用进展，分析斑块特征对缺血性卒中的影响 ...
廖明莎，陈澜菁，苟玉林，曾妮，傅建梅，戴贵东（LIAO Mingsha, CHEN Lanjing, GOU Yulin, ZENG Ni, FU Jianmei, DAI Guidong）
doaj +1 more source
Integrative Conservation, EarlyView.Pometia pinnata demonstrated life‐stage‐specific genetic responses to landscape features, with asymmetric gene flow patterns and population recovery following historical bottlenecks, revealing complex topographic and demographic influences on forest genetic structure.
Madhuparna Chatterjee +5 more
wiley +1 more source