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10篇 您的检索式:作者名="Siegford"
    题名 作者 年代 出处 被引量
1基于ALR-GMM的群养猪攻击行为识别算法研究显示文摘群养猪攻击行为是评估猪群对微环境适应性的重要指标。活动指数模型能够描述猪群行为模式,已经在群养猪攻击行为识别研究中得到初步验证。然而,养殖设施的差异性和动态背景环境等因素所导致的环境适应性差是限制其商业化应用的主要障碍。本文基于递归背景建模思想,在高斯混合模型(GMM)中引入双曲正切函数,提出了一种自适应学习率GMM的活动指数计算方法(ALR-GMM),能够在动态背景环境下准确提取动物活动指数。与经典模型相比,平均相对误差从15.08%降到14.34%。育肥猪攻击行为识别试验中,采用ALR-GMM算法提取行为视频单元的活动指数特征,构建了活动指数最大值、平均值、方差和标准差特征向量,采用线性核函数支持向量机建立分类器。结果表明,本文算法的正确率、灵敏度、特效度和精度分别为97.6%、97.9%、97.7%和97.8%,满足实际应用需求。刘冬 何东健 陈晨 STEIBEL Juan SIEGFORD Janice NORTON Tomas 2021农业机械学报2021,52,1:7
2Effects of early weaning and social isolation on the expression of glucocorticoid and mineralocorticoid receptor and 11 beta-hydroxysteroid dehydrogenase 1 and 2 mRNAsin the frontal cortex and hippocampus of piglets显示文摘Poletto R Steibel J P Siegford J M 2006Brain Res2006,1067,1:1
3Effects of early weaning and social isolation on the expression of glucocorticoid and mineralocorticoid receptor and 11beta-hydroxysteroid dehydrogenase 1 and 2 mRNAs in the frontal cortex and hippocampus of piglets显示文摘Poletto R Steibel JP Siegford JM 2006Brain Res2006,1067,1:1
4Effects of early weaning and social isolation on the expression of glucocorticoid and mineralocorticoid receptor and 11β-hydroxysteroid dehydrogenase 1 and 2 mRNAs in the frontal cortex and hippocampus of piglets显示文摘R. Poletto J.P. Steibel J.M. Siegford A.J. Zanella 2005Brain Research2005,,1:1
5Dairy cow behavior affects the availability of an automatic milking system 显示文摘Jacobs J A Ananyeva K Siegford J M 2012J Dairy Sci2012,95,:1
6Effects of early weaning and social isolation on the expression of glucocorticoid and mineralocoticoid receptor and 11 beta-hydroxysteroid dehydrogenase 1 and 2 on mRNAs in the frontal cortex and hippocampus of piglets 显示文摘Pofetto R Steibel JP Siegford JM Zanella AP 2006Brian Res2006,1067,1:1
7Environmental as- pects of ethical animal production显示文摘Siegford J M Powers W Grimes-casey H G 2008Poult Sci2008,87,2:1
8Effects of early weaning and social isolation on the expression of glucocorticoid and mineralocorticoid receptor and 11 beta-hydroxysteroid dehydrogenase 1 and 2 mRNAs in the frontal cortex and hippocampus of piglets显示文摘Poletto R Steibel JP Siegford JM Zanella AP 2006Brain Res2006,1067,1:1
9Effects of early weaning and social isolation on the expression of glucocorticoid and mineralocorticoid receptor and 11 beta - hydroxysteroid dehydrogenase 1 and 2 mRNAs in the frontal cortex and hippocampus of piglets 显示文摘Poletto R Steibel JP Siegford JM 2006Brain Res2006,1067,:1
10Student perceptions of an animal - welfare and ethics course taught early in the veterinary curriculum显示文摘Abood S K Siegford J M 2012J Vet Med Educ2012,39,2:1
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