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由Hermite-Hadamard不等式的一个推广形式所生成的不等式
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作者 时统业 董芳芳 《湖南理工学院学报(自然科学版)》 CAS 2024年第1期1-6,共6页
考虑由一个推广的Hermite-Hadamard不等式的右边部分的连续加细所生成的两个差函数.引入参数求最值的方法,在Lipschitz条件下给出了关于这两个差函数的不等式.
关键词 hermite-Hadamard型不等式 LIPSCHITZ条件 凸函数 加强
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基坑开挖引起下卧隧道竖向变形的Hermite谱分析方法 被引量:1
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作者 黄明华 胡正刚 +2 位作者 周钲霖 周苏华 谭鑫 《安全与环境学报》 CAS CSCD 北大核心 2024年第2期488-495,共8页
针对基坑开挖引起下卧隧道的竖向变形问题,通过引入Hermite函数,建立基坑开挖所引起土体附加应力及下卧隧道竖向变形的Hermite谱分析方法。基于Mindlin解答与Pasternak地基上的Euler-Bernoulli梁理论,建立了基坑开挖所引起土体附加应力... 针对基坑开挖引起下卧隧道的竖向变形问题,通过引入Hermite函数,建立基坑开挖所引起土体附加应力及下卧隧道竖向变形的Hermite谱分析方法。基于Mindlin解答与Pasternak地基上的Euler-Bernoulli梁理论,建立了基坑开挖所引起土体附加应力的计算表达式与下卧隧道竖向变形的控制方程,并采用有限项Hermite级数展开,将下卧隧道竖向变形控制方程转化为线性代数系统进行求解,获得其竖向变形解答;在此基础上,结合工程案例,验证所建立解答的收敛性与可靠性,并探讨隧道埋深、隧道与基坑水平距离及基坑平面尺寸对下卧隧道竖向变形特性的影响。结果表明:随着隧道埋深及隧道与基坑水平距离的增加,基坑开挖对下卧隧道竖向变形的影响逐渐降低,下卧隧道的竖向位移逐渐变小;基坑开挖水平尺寸的增大会使下卧隧道竖向变形增大,且平行隧道方向的尺寸变化,影响更为明显。研究成果为分析基坑开挖所引起的下卧隧道竖向变形特性提供了一种新的计算方法。 展开更多
关键词 安全工程 下卧隧道 竖向变形 基坑开挖 hermite谱方法
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基于改进分段三次Hermite插值的机床复合误差建模与补偿
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作者 孙光明 张大卫 +1 位作者 孙铭泽 李志军 《天津理工大学学报》 2024年第3期9-16,共8页
为降低精密卧式加工中心几何误差与热误差而产生的复合误差,文中提出一种基于改进分段三次Hermite插值(improved piecewise cubic Hermite interpolation, IPCHI)算法的复合误差建模方法。为建立复合误差模型,在JIG630精密卧式加工中心... 为降低精密卧式加工中心几何误差与热误差而产生的复合误差,文中提出一种基于改进分段三次Hermite插值(improved piecewise cubic Hermite interpolation, IPCHI)算法的复合误差建模方法。为建立复合误差模型,在JIG630精密卧式加工中心上开展试验,采用温度传感器和激光干涉仪分别获取机床温度值和定位误差分析整个温升过程中的误差数据,总结误差分布规律,运用IPCHI算法识别并建立几何误差和热误差的数学模型。运用复合误差模型进行补偿实验,精密卧式加工中心常温下的最大定位误差从-10.1μm降至2.3μm,补偿77%;温升之后定位误差从-19.8μm降至2.6μm,补偿87%,验证了IPCHI模型在实际误差补偿中具有明显的补偿效果。 展开更多
关键词 精密卧式加工中心 改进分段三次hermite插值 误差建模 误差补偿
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Tourism Officials Turn to Social Media
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作者 Pan Xiaoqiao 《China Report ASEAN》 2023年第2期66-67,共2页
Recent years have seen a growing number of local officials choosing to promote their areas as influencers In the digital age,online celebrities attract public attention and influence followers more easily on issues su... Recent years have seen a growing number of local officials choosing to promote their areas as influencers In the digital age,online celebrities attract public attention and influence followers more easily on issues such as what to buy and where to go.The latest trend spreading among civil servants:becoming social media influencers to promote their hometowns. 展开更多
关键词 BECOMING TREND officials
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基于Hermite插值的仿真动态成像平滑过渡设计
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作者 陈创 蒲鑫 +1 位作者 李昂轩 陶光辉 《吉林大学学报(信息科学版)》 CAS 2024年第3期522-530,共9页
针对实现与真实硬件一致的仿真效果的需求,提出了一种平滑过渡方法,旨在改善整个仿真系统的成像效果。通过对视觉暂留效应和系统成像延迟进行分析,采用两点三次Hermite插值法,分别处理平滑过渡时间和成像颜色。通过对比实验验证,结果表... 针对实现与真实硬件一致的仿真效果的需求,提出了一种平滑过渡方法,旨在改善整个仿真系统的成像效果。通过对视觉暂留效应和系统成像延迟进行分析,采用两点三次Hermite插值法,分别处理平滑过渡时间和成像颜色。通过对比实验验证,结果表明该方法能使整个仿真系统的成像自适应平滑,解决了实时动态成像闪烁和不稳定的问题。实验结果表明,该方法提升了嵌入式微控制器的虚拟3D仿真实验系统的成像质量,能改善嵌入式微控制器三维仿真的视觉效果,并减轻突变和伪影等的影响,表明嵌入式微控制器的虚拟3D仿真实验系统在教育和设计领域的重要应用价值。 展开更多
关键词 平滑过渡 嵌入式微控制器 3D仿真 视觉暂留 成像延迟 hermitE插值
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Seasonal changes in Hermit Thrush (Catharus guttatus) song syntax
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作者 Sean P.Roach Luke C.McLean +1 位作者 Jeff W.MacLeod Leslie S.Phillmore 《Avian Research》 SCIE CSCD 2024年第2期172-179,共8页
In many songbird species,birdsong features phonological syntax,meaning that the units within their vocal se-quences are ordered in a non-random way that adheres to a rule.While such syntactical patterns have been rich... In many songbird species,birdsong features phonological syntax,meaning that the units within their vocal se-quences are ordered in a non-random way that adheres to a rule.While such syntactical patterns have been richly described in many species,comparatively little is known about how those patterns contribute to song achieving its important functions.For each of song’s main functions,territorial defense and mate attraction,evidence of a role for syntax is limited.One species for which syntax has been thoroughly described is the Hermit Thrush(Catharus guttatus),which presents song types from their repertoires in a semi-predictable order and,in doing so,rapidly cycle up and down the frequency spectrum.The objective of the present study was to explore the importance of song syntax in the Hermit Thrush through a within-subject examination of how measures of syntax,such as the predictability of song type order within song sequences,shift over the breeding season.We hypothesized that,if such syntactical characteristics are important to breeding behaviour,they would be most prominent at the start of the breeding season when activity associated with territory establishment and mate attraction is most intense.Analysis revealed that,as predicted,the rigidness of song type ordering within se-quences was highest at the start of the season and declined thereafter.That song type sequences were most predictable at the vitally important early part of the breeding season fit our hypothesis that this aspect of song syntax is important to song’s functions related to territory establishment and/or mate attraction.Future work will clarify whether that role relates to one of song’s two main functions or serves song transmission in some broader way. 展开更多
关键词 BIRDSONG hermit Thrush Seasonal change STEREOTYPY SYNTAX
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实对称矩阵与Hermite矩阵符号分类的特征多项式法
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作者 田代军 周泽华 《大学数学》 2024年第1期96-98,共3页
给出了直接用特征多项式判别实对称矩阵与Hermite矩阵的符号分类的方法.
关键词 实对称矩阵 hermitE矩阵 符号分类 惯性指数 特征多项式
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二阶q_(a)-可微凸函数的Hermite-Hadamard型积分不等式
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作者 刘晨璇 王淑红 《内蒙古民族大学学报(自然科学版)》 2024年第1期49-54,共6页
基于q_(a)-导数和q_(a)-积分,对二阶q_(a)-可微凸函数的Hermite-Hadamard型积分不等式进行了研究。分析二阶q_(a)-导数的特点,寻找二阶q_(a)-导数和q_(a)-积分之间的联系,建立了二阶q_(a)-可微函数的积分恒等式。利用该积分恒等式和函... 基于q_(a)-导数和q_(a)-积分,对二阶q_(a)-可微凸函数的Hermite-Hadamard型积分不等式进行了研究。分析二阶q_(a)-导数的特点,寻找二阶q_(a)-导数和q_(a)-积分之间的联系,建立了二阶q_(a)-可微函数的积分恒等式。利用该积分恒等式和函数的凸性,将被积函数进行巧妙分解,结合三角不等式和Hölder不等式等经典不等式,给出了二阶q_(a)-可微凸函数的Hermite-Hadamard型积分不等式的不同的右端估计。 展开更多
关键词 凸函数 hermitE-HADAMARD不等式 q_(a)-导数 q_(a)-积分
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Hermite矩阵特征值分解的硬件加速
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作者 王卫江 李泽英 +2 位作者 薛丞博 李翔南 任仕伟 《北京理工大学学报》 EI CAS CSCD 北大核心 2023年第9期988-994,共7页
在数字信号处理领域,Hermite矩阵的特征值分解有着非常广泛的应用.为了解决其硬件实现问题,提出了一种基于复数域Jacobi算法的硬件加速架构,该设计方案可适用于不同大小的Hermite矩阵.为了在计算精度、计算速度和资源占用之间取得平衡,... 在数字信号处理领域,Hermite矩阵的特征值分解有着非常广泛的应用.为了解决其硬件实现问题,提出了一种基于复数域Jacobi算法的硬件加速架构,该设计方案可适用于不同大小的Hermite矩阵.为了在计算精度、计算速度和资源占用之间取得平衡,在Matlab平台上对定点运算的小数位量化位宽进行了仿真,以8×8大小的Hermite矩阵为例,确定了15位的小数位量化为最佳.分别介绍了复数域Jacobi算法硬件加速中寻找最大非对角线元素、构造酉矩阵和更新特征值矩阵和特征向量矩阵的硬件电路结构.在Zynq-7000系列FPGA开发板上进行了实现,仅需要17 438LUTs和24 650Registers即可在34.42μs内完成对8×8大小的Hermite矩阵的特征值分解. 展开更多
关键词 hermitE矩阵 特征值分解 Jacobi算法 硬件加速
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基于PIA的非均匀三次B样条曲线Hermite插值 被引量:2
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作者 吴硕琳 李亚娟 邓重阳 《计算机学报》 EI CAS CSCD 北大核心 2023年第11期2463-2475,共13页
提出基于渐进迭代逼近(Progressive Iteration Approximation,PIA)的非均匀三次B样条曲线Hermite插值算法.首先,以给定数据点作为初始控制顶点,采用累加弦长法得到节点序列,通过构造误差向量更新控制顶点,迭代生成插值数据点的非均匀三... 提出基于渐进迭代逼近(Progressive Iteration Approximation,PIA)的非均匀三次B样条曲线Hermite插值算法.首先,以给定数据点作为初始控制顶点,采用累加弦长法得到节点序列,通过构造误差向量更新控制顶点,迭代生成插值数据点的非均匀三次B样条曲线.当需要同时插值数据点和单位切向时,在每个节点区间上插入一个节点;当需要同时插值数据点、单位切向和曲率向量时,在每个节点区间上插入两个节点;更新初始控制顶点,进而迭代得到插值B样条曲线.理论分析表明算法是收敛的.数值算例结果说明,与均匀三次B样条曲线插值算法相比,当相邻数据点间距离变化程度越大时,该算法的收敛速度越快,在相同误差条件下迭代次数更少. 展开更多
关键词 非均匀三次B样条曲线 迭代算法 hermitE插值 渐进迭代逼近 控制顶点
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基于Hermite插值的管片拼装机轨迹规划
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作者 吕志斌 秦东晨 +1 位作者 朱强 陈江义 《机床与液压》 北大核心 2023年第3期162-166,共5页
盾构施工中,管片拼装机需要先完成一环的拼装,才能往前进行推进。目前管片拼装机工作效率较低,直接影响着掘进速度。为了提高管片拼装机的拼装效率,结合Hermite插值算法提出一种新的拼装轨迹规划方法,通过各动作始末两点进行Hermite插值... 盾构施工中,管片拼装机需要先完成一环的拼装,才能往前进行推进。目前管片拼装机工作效率较低,直接影响着掘进速度。为了提高管片拼装机的拼装效率,结合Hermite插值算法提出一种新的拼装轨迹规划方法,通过各动作始末两点进行Hermite插值,构造出五次多项式,通过加速度、功率等约束解出各具体解。选取用时最长的作为时间基准,重新构造其余五次多项式。在降低启动冲击的同时,将管片拼装机的拼装效率提升了近一倍。 展开更多
关键词 管片拼装机 hermitE插值 轨迹规划 拼装效率
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Research on the Achievement Motivation of the University Student Village Officials in the Suburbs of Beijing 被引量:1
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作者 YANG Xin 《Agricultural Science & Technology》 CAS 2011年第4期477-479,共3页
[Objective] The aim was to explore the achievement motivation of the university student village officials in the suburbs of Beijing.[Method] The research made an investigation on 429 university student village officia... [Objective] The aim was to explore the achievement motivation of the university student village officials in the suburbs of Beijing.[Method] The research made an investigation on 429 university student village officials in the suburbs of Beijing by the Achievements Motive Scale(AMS).[Result] The achievement motivation of these student village officials was not on a high level,but they tended to pursue the success motivation rather than the motivation to avoid failures obviously.There was a significant difference in the achievement motivation between different genders,majors and jobs.The males' motivation for success was higher than the females'.The motivation of avoiding failures among officials in Humanities was higher than in Science and in Fine Art.And the university student village officials in professional and technical posts or in business posts rated the motivation to avoid failures more important than in basic management posts.But achievement motivations in different urban-rural areas,educational levels,political backgrounds,whether student leaders or not,and durations were no definite differences.Besides,it had a significant effect on these student village officials' achievement motivation whether advices and suggestions were accepted;if yes,the motivation was higher.[Conclusion] This study had provided stability and development for building rural talent groups. 展开更多
关键词 University student village official Achievement motivation Investigation
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Hermite插值在最大框架下的逼近误差
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作者 于晓晨 黄蓉 《天津师范大学学报(自然科学版)》 CAS 北大核心 2023年第1期1-5,共5页
在最大框架下研究Hermite插值算子在加权L_(p)(1≤p≤+∞)范数下对一类解析函数类的逼近问题,得到了逼近误差的显式表达式,利用此结果研究基于第二类Chebyshev节点组的2种Hermite插值算子,得到了相应量的强渐近阶或值.
关键词 hermitE插值 最大框架 解析函数类 Chebyshev节点组
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FUZZY SYNTHETICAL EVALUATION ON THE GOVERNMENT OFFICIALS’ CONSCIOUSNESS ON THE IPE BASIS
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作者 杨俊保 杨保安 《Journal of China Textile University(English Edition)》 EI CAS 1997年第2期69-73,共5页
Government policy is the key to the development of the individual and private economy (IPE).In the making of a policy, the social consciousness of government officials is one of the important factors to affect the pol... Government policy is the key to the development of the individual and private economy (IPE).In the making of a policy, the social consciousness of government officials is one of the important factors to affect the policy made. Since the social consciousness on the development of IPE varies from person to person, it is conventionally indefinite and fuzzy. This paper applies fuzzy sets to analyse the government officials’ social consciousness on the IPE basis. 展开更多
关键词 social CONSCIOUSNESS GOVERNMENT officials fuzzy SETS synthetical evaluation IPE.
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多元α-预不变凸函数的Hermite-Hadamard型积分不等式 被引量:1
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作者 王海英 符祖峰 +1 位作者 李婧 谭冰 《湖北民族大学学报(自然科学版)》 CAS 2023年第2期246-251,共6页
论文研究了α-预不变凸函数的Hermite-Hadamard型积分不等式。利用Holder不等式、幂平均不等式和函数的α-预不变凸性,对此类广义凸函数的Hermite-Hadamard型积分不等式的左右两边分别给出估计值。借助多元α-预不变凸函数与单变量凸函... 论文研究了α-预不变凸函数的Hermite-Hadamard型积分不等式。利用Holder不等式、幂平均不等式和函数的α-预不变凸性,对此类广义凸函数的Hermite-Hadamard型积分不等式的左右两边分别给出估计值。借助多元α-预不变凸函数与单变量凸函数之间的关系,将此类函数的Hermite-Hadamard型不等式结果进行推广,得到了多元α-预不变凸函数的2个Hermite-Hadamard型积分不等式。 展开更多
关键词 α-预不变凸函数 hermite-Hadamard型积分不等式 HOLDER不等式 幂平均不等式 单变量凸函数
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基于FFT和三次Hermite插值的人体触电判据初探 被引量:1
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作者 王欣阳 魏云冰 徐浩 《电气工程学报》 CSCD 2023年第1期133-142,共10页
针对当前基于TT系统(电气设备的金属外壳直接接地的保护系统)的低电压配电网输电线路上的剩余电流保护设备无法保证人触电后马上动作的现状,首先搭建活体触电试验平台,通过单相电压有效值220 V、频率50 Hz的电源对猪表皮进行触电试验,... 针对当前基于TT系统(电气设备的金属外壳直接接地的保护系统)的低电压配电网输电线路上的剩余电流保护设备无法保证人触电后马上动作的现状,首先搭建活体触电试验平台,通过单相电压有效值220 V、频率50 Hz的电源对猪表皮进行触电试验,并使用控制变量的方法研究触电波形和触电面积、触电湿度以及触电时漏电电流大小之间的关系,得到试验数据;其次,对试验数据进行处理,使用FFT计算触电时刻的谐波畸变率,使用三次Hermite插值算法,绘制触电波形包络线,计算包络线不同时刻的斜率;最后,选择谐波畸变率最小值和合适的斜率,搭建仿真平台,对试验数据拟合得到的人体阻抗进行触电仿真,使用谐波畸变率和波形峰值斜率变化作为剩余电流保护设备触电判断依据,验证了所提判据的可行性。 展开更多
关键词 TT系统 触电试验 动态阻抗模型 快速傅里叶变换 三次hermite插值
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四元数矩阵方程X^(2)+BX+XB*+Q=0的Hermite正定解
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作者 姚祎雯 黄敬频 《陕西科技大学学报》 北大核心 2023年第5期195-202,共8页
讨论四元数体上二次矩阵方程X^(2)+BX+XB*+Q=0(Q>0)存在Hermite正定解的必要和充分条件及其迭代求解方法.主要针对系数矩阵的特点,通过引入适当的参数建立矩阵不等式,利用凸集上的不动点理论,证明了该方程存在Hermite正定解的一些必... 讨论四元数体上二次矩阵方程X^(2)+BX+XB*+Q=0(Q>0)存在Hermite正定解的必要和充分条件及其迭代求解方法.主要针对系数矩阵的特点,通过引入适当的参数建立矩阵不等式,利用凸集上的不动点理论,证明了该方程存在Hermite正定解的一些必要和充分条件.在此基础上,对不同的条件和解存在区间构建出三种收敛的迭代格式,根据每种迭代特性给出了初始矩阵的选取方法,并运用四元数矩阵的复化算子建立Matlab环境下求解算法.与此同时对方程的解进行了扰动分析,获得2个扰动误差界.三个数值算例检验了所给方法的有效及可行性. 展开更多
关键词 四元数 二次矩阵方程 hermitE正定解 矩阵不等式 迭代 扰动分析
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New Institutional Mechanism in China Facilitating the Global Sustainability——Environment to Be Counted in Officials' Performance Rating
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作者 Ren Jingming Wang Rusong Research Center for Eco-Environmental Science, Chinese Academy of Science, Beijing 100085, China Development Research Center of Chinese Geological Survey, Beijing 100037, China 《Chinese Journal of Population,Resources and Environment》 2004年第4期49-52,共4页
Having argued the importance of China's sustainable development in global sustainability, the authors review the achievements of China in sustainable development, especially its institutional construction. Environ... Having argued the importance of China's sustainable development in global sustainability, the authors review the achievements of China in sustainable development, especially its institutional construction. Environment to be counted in official's political performance rating system is thought of as a new institutional mechanism in China facilitating its sustainable development and then global sustainability. Then its significance is narrated and visions in future are envisioned. In the end, certain concrete suggestions for the rating system are given in a practical way. 展开更多
关键词 official’s performance rating System institutional mechanism China’s sustainable development global sustainability
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Hermite R-反对称矩阵的二次特征值反问题
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作者 齐志萍 张澜 《华东师范大学学报(自然科学版)》 CAS CSCD 北大核心 2023年第2期5-11,共7页
研究了Hermite R-反对称矩阵的二次特征值反问题.利用矩阵分块法、奇异值分解、向量拉直和Moore-Penrose逆,证明了该问题Hermite R-反对称解的存在性,给出了Hermite R-反对称解的一般表达式,讨论了最佳逼近问题.并给出了算例验证理论的... 研究了Hermite R-反对称矩阵的二次特征值反问题.利用矩阵分块法、奇异值分解、向量拉直和Moore-Penrose逆,证明了该问题Hermite R-反对称解的存在性,给出了Hermite R-反对称解的一般表达式,讨论了最佳逼近问题.并给出了算例验证理论的正确性. 展开更多
关键词 hermite R-反对称矩阵 奇异值分解 向量拉直 最佳逼近
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Attitudes, knowledge levels and behaviors of Islamic religious officials about organ donation in Turkey: National survey study
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作者 Sami Akbulut Ali Ozer +3 位作者 Betul Firinci Hasan Saritas Khaled Demyati Sezai Yilmaz 《World Journal of Clinical Cases》 SCIE 2020年第9期1620-1631,共12页
BACKGROUND The most important factors affecting the decision of organ donation are socioeconomic,educational,cultural,and religious factors.AIM To evaluate Islamic religious officials’attitudes and behaviors toward a... BACKGROUND The most important factors affecting the decision of organ donation are socioeconomic,educational,cultural,and religious factors.AIM To evaluate Islamic religious officials’attitudes and behaviors toward and level of knowledge on organ donation and transplantation.METHODS This study surveyed 2350 Islamic religious officials in Turkey.To ensure a representative sample,we used and modified the Nomenclature of Territorial Units for Statistics.Based on the Nomenclature of Territorial Units for Statistics-II,Turkey was divided into 26 regions.The number of Islamic religious officials in each city and town in each of the 26 regions was proportionate to the population.A stratified sampling method based on demographic factors,such as age,marital status,and educational level,was used.Data were collected by PRP Research and Consultancy Company using computer-assisted personal interviewing.RESULTS Of the 2350 religious officials surveyed,59.9%were in the age group of 35-54 years;84.7%had either a bachelor’s or a master’s degree;99.7%never donated an organ;and 75.4%were not considering donating in the future.About 22%of the religious officials said religious belief was their reason for not donating;45.3%did not indicate any reason.Although 41.5%of participants considered cadaveric organ donation as the best source of organ transplantation,36.3%deemed living donor transplantation as the best option.Meanwhile,52.9%of participants considered donating an organ from a brain dead relative in case they were asked for permission;80.1%considered donating to a relative,if necessary;81.6%considered undergoing organ transplantation,if necessary.About 83.7%of participants deemed organ donation as a proper human behavior;60.5%believed that it is allowed by Islam;55%said they preach for organ donation at their mosque;and 41.1%said their views of organ donation were influenced by their leaders in society.CONCLUSION Religious officials are unsure whether or not organ donation is respectful of their religious belief,but they consider donating an organ if a relative need to undergo organ transplantation. 展开更多
关键词 ORGAN transplant ORGAN DONATION ISLAMIC RELIGIOUS officials RELIGIOUS BELIEFS Barriers to ORGAN DONATION Awareness
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