Results 31 to 40 of about 1,128,392 (212)
Narrative power in the narrative policy framework
Abstract The Narrative Policy Framework lacks clear and empirical explanations of power. Yet, the study of narratives is inherently the study of power in shaping policy outputs and decisions. We develop a conceptual model positing that expressions of power (power to, with, and over) may be discovered in narrative constructs (e.g., narrative structure ...
Elizabeth A. Shanahan +8 more
wiley +1 more source
ABSTRACT Despite extensive research on policy diffusion, the ways in which policy attention influences this process remain underexplored. This study addressed this gap by distinguishing between three types of policy attention—political speeches, policy issuance and field visits—and investigating their differential impacts when delivered by central and ...
Xiangning Chen, Yahua Wang
wiley +1 more source
ABSTRACT The construction of core–shell grains can enhance the coercivity of Nd2Fe14B magnets. However, it is a significant challenge to elucidate the formation of these core–shell grains particularly regarding the spontaneous core–shell structure in Y‐substituted Nd2Fe14B alloys.
Sining Fan +13 more
wiley +1 more source
ABSTRACT With high theoretical capacity and low cost, bismuth sulfide (Bi2S3) demonstrates considerable potential as an anode for sodium/potassium‐ion batteries (SIBs/PIBs). Unfortunately, significant volume variation, low electrical conductivity, and dissolution of polysulfides drastically weaken their intrinsic merits.
Fuyu Xiao +11 more
wiley +1 more source
针对使用粪便显微分析法时对食草动物粪便中植物表皮细胞人工分类困难且效率低的问题,提出一种基于多轴注意力的双通道神经网络分类方法,用于自动识别显微镜下食草动物粪便中残留的植物表皮细胞种类。首先,获取粪便中残留的植物表皮细胞图像,作为神经网络模型的输入;引入多轴注意力机制提高网络特征提取能力,同时降低注意力导致的计算复杂度;构建局部和全局通道,提高网络对植物表皮细胞图像信息的获取能力;最后将2个通道提取的特征进行融合,完成对植物种类的识别。此外,应用移动倒置瓶颈卷积(MBConv)模块进行模型的轻量化处理 ...
马光凯 +4 more
doaj
ABSTRACT Laser powder bed fusion (LPBF) can fabricate high‐entropy alloys (HEAs) with refined microstructure and enhanced mechanical properties. However, the deformation and fatigue mechanisms of Al‐containing HEAs produced by LPBF remain unclear. In this work, we systematically investigate the tensile properties, deformation mechanisms, and high‐cycle
Dan Zheng +4 more
wiley +1 more source
Issue Attention in Public Opinion Polls: Pollsters as Agenda Responders and Agenda Setters
ABSTRACT Polling organizations, like other policy actors, must prioritize certain issues. We argue that, for normative and financial reasons, pollsters prioritize issues that are viewed as important by other institutions and the public, leading them to focus survey questions on issues that are on congressional and media agendas, and which are public ...
Qian Zhang +2 more
wiley +1 more source
融入混合注意力的低缩放因子Seam Carving篡改检测算法
针对现有的Seam Carving篡改检测算法对于低缩放因子情况存在检测精度不高、鲁棒性不强的问题,提出一种融入混合注意力机制的Seam Carving篡改检测算法。首先,利用BayarConv2D约束卷积对图像进行预处理,充分学习图像的噪声特征,并通过矩阵乘法与RGB图像进行特征融合;然后,采用ResNet作为骨干网络进行特征学习,引入残差传播和残差反馈机制,凸显Seam Carving的操作痕迹;最后,利用混合注意力机制同时提取相邻位置和通道之间的特征,更好地捕捉全局特征 ...
赵洁, 常皓婵, 武斌
doaj +1 more source
ABSTRACT The development of neuromorphic electronics with visual perception and adaptive capability is highly desirable for advancing artificial vision systems. Herein, we have demonstrated a dual‐plasticity adaptive phototransistor based on IGZO nanofibers that exhibits the perception and dynamic adaptation behavior of rod and cone cells to varying ...
Shanshan Jiang +5 more
wiley +1 more source
针对长短期记忆神经网络提取特征信息相关性和时间信息依赖性不足的问题,提出基于改进双多头注意力机制的长短期记忆神经网络(improved dual stage attention⁃based long short⁃term memory neural networks, 简称IDSA⁃LSTMNN),以提高滚动轴承剩余使用寿命(remaining useful life, 简称RUL)的预测精度。首先,采用改进的蜘蛛蜂优化器(improved spider wasp optimizer, 简称ISWO ...
doaj +1 more source

