Results 81 to 90 of about 18,901 (182)
ABCA12 Frameshift Deletion in Domestic Cats With Ichthyosis Fetalis
Veterinary Dermatology, EarlyView.ABSTRACT Background Ichthyosis fetalis (IF), also known as harlequin ichthyosis, is a rare and often fatal autosomal recessive congenital skin disorder. It is characterized by thickened, hard skin plaques and deep skin fissures that limit mobility and cause malformations of the eyes, lips and ears.
Jeanna M. Blake +2 more
wiley +1 more source
Two-dimensional Model Predictive Iterative Learning Control Scheme Based on a Two-dimensional Performance Model [PDF]
, 2013 将迭代学习控制(ITErATIVE lEArnIng COnTrOl,IlC)系统看作一类具有2维动态特性的控制系统,根据模型预测控制(MOdEl PrEdICTIVE COnTrOl,MPC)和性能参考模型控制思想,提出了一种基于2维性能参考模型的2维模型预测迭代学习控制系统设计方案.在该控制系统设计方案中,可以通过选择适当的2维性能参考模型来构造2维动态变化的设定值信号和预测控制信号,从而引导迭代学习控制系统收敛到合理的控制性能,并有效避免系统性能收敛过程中控制输入可能发生的剧烈波动 ...
周华 +4 more
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Jixie chuandong, 1989 本文运用正交试验和计算机模拟相结合的方法综合研究齿轮的设计参数对齿轮动态特性的影响。应用本方法能简捷方便地了解各参数对动态性能影响的重要程度,同时,在一定条件下能得出使动态性能最佳的齿轮设计参数。
唐增宝, 钟毅芳, 王涛
doaj
Poverty &Public Policy, Volume 18, Issue 2, June 2026.ABSTRACT Rapid urbanisation and persistent socio‐economic inequality continue to entrench multidimensional poverty within South Africa's urban informal settlements, with women and female‐headed households experiencing disproportionate deprivation. This study analysed primary household survey data collected in 2023 from 322 households across three ...
Adrino Mazenda +3 more
wiley +1 more source
Structural analysis and lightweight study for the five-axis grinder bed [PDF]
, 2013 以五轴联动工具磨床的床身为研究对象,分析了磨床在极限位置使用情况下床身的静态特性,找到了床身变形最大区域。通过自由模态分析和约束模态分析,得到床身各阶模态的振动特点,并从最大变形区域中选取一点进行谐响应分析,预测床身的持续动力特性。根据分析结果,找出薄弱环节,在保证床身动静态特性不降低的基础上对床身进行轻量化研究,最终减重7.73%,节省了材料与成本。With the five-axis grinding machine tool bed as the research object, the ...
姚博世 +4 more
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The Essence of Crisis Decision‐Making: Saving Ravenna During the 2023 Floods
Risk, Hazards &Crisis in Public Policy, Volume 17, Issue 2, June 2026.ABSTRACT This article explores decision‐making processes in crisis situations by proposing an interpretive framework grounded in multiple criteria of rationality. Crises, characterized by uncertainty, urgency, and ethical dilemmas, require critical choices that go beyond standard procedures.
Alexandra D'Angelo, Federico Toth
wiley +1 more source
Study on the Application of Association Rules in Temporal Data Mining [PDF]
, 2008 20世纪80年代末，数据挖掘作为一个全新的研究领域悄然出现并迅速发展。数据挖掘的研究目的是在大型数据集中发现那些隐藏的、人们感兴趣的具有特定规律的信息。作为数据挖掘对象之一的时态数据库是由随时间变化的一系列序列值或事件组成的数据库。时态数据挖掘的研究对商业、金融、医疗诊断、科学与工程等领域的数据分析具有重要意义，因而时态数据的挖掘方法也成为数据挖掘的一个研究热点。 关联规则一直是近年来数据挖掘和人工智能领域研究的热点课题，目前在客户关系管理、医学、生物等领域已有应用 ...
乐燕波
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, 2018 基于可调Sigmoid力学模型,对磁流变阻尼器(Magnetorheological Damper,MRD)的阻尼动态特性进行辨识拟合,建立1/4车半主动磁流变悬架系统模型。在混合阻尼控制基础上,利用模糊控制器,提出一种混合阻尼模糊电流控制策略,实现对MRD等效阻尼系数的连续可调与阻尼分配系数的自动调节,增加其灵活控制性与自适应性。在此基础上,同时分别在冲击路面与随机路面激励下,将该算法与混合阻尼开关电流控制和被动控制进行仿真对比分析,结果表明所提控制策略具有更好的减振性能。国家自然科学基金项目 ...
刘前结, 李刚, 胡国良
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Dianci bileiqi, 1992 提出了SiC非线性电阻的导电模型.利用半导体理论分析了SiC非线性电阻的静态及动态伏安特性,认为SiC非线性电阻的伏安特性是由形成SiC非线性电阻的两大组分—SiC、结合剂共同决定的.
贺西民
doaj
Functional Ecology, Volume 40, Issue 5, Page 1151-1164, May 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo +8 more
wiley +1 more source