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Effect of Dandelion(Taraxacum mongolicum Hand.-Mazz.)Intercropping with Different Plant Spacing on Blight and Growth of Pepper(Capsicum annuum L.)

第26届中国控制与决策会议

作者： jia meimei Zhang Guoshan School of Electrical Engineering and Automation Tianjin University

ISBN: (纸本)9781479937097

To transform the Buck-Boost converter from the chaotic state to the periodic orbits, this paper proposes a chaotic control method by improving the correlation between the inductor current and the output voltage. By adjusting the coupling strength, this method can control the chaotic Buck-Boost converter to the period-2, period-4, period-8 orbits and the period-3, period-6, period-9 orbits, without determining the unstable periodic orbits（UPOs） in advance.

关键词： Chaos Control Buck-Boost Converter Correlation Coupling strength Periodic orbits

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Phyton-International Journal of Experimental Botany 2023年第8期92卷 2227-2244页

作者： Peixin Li Hanbing Liu Yingtong Chen Xin Zhang Ning Cao Ying Sun meimei jia Mengran Wu Xuejiao Tong Xinmei jiang Xihong Yu Yao Cheng College of Horticulture and Landscape Architecture Northeast Agricultural UniversityHarbin150030China Key Laboratory of Biology and Genetic Improvement of Horticulture Crops(Northeast Region) Ministry of Agriculture and Rural AffairsHarbinChina State Key Laboratory of Improvement and Utilization of Saline-Alkali Soils(Inland Saline-Alkali Land of Northeast China) Ministry of Agriculture and Rural Affairs of ChinaJilin Agricultural UniversityJilinChina

Intercropping of crops that can secrete bacteriostatic active substances can not only inhibit the occurrence of disease but also have an important effect on plant ***,the effects of dandelion intercropping on pepper blight control and pepper growth remain *** this study,the control effect of dandelion on pepper blight was studied by inoculating the pepper leaves with Phytophthora infestans,and it also discusses the correlation of the occurrence of pepper epidemic disease with the pepper canopy environment,soil environment,pepper photo-synthesis,and yield *** results showed that best plant distance for dandelion intercropping was 20 cm(P20),and the control effect reached 43.31%.As compared to the CK,SOD enzyme,POD enzyme,and PAL enzyme were signiﬁcantly up-regulated during the growth of pepper;chlorophyll content in pepper leaves was signiﬁcantly increased;photosynthetic characteristics were signiﬁcantly increased;stem diameter and yield of crop pepper were effectively improved;and the quality of the pepper product was better,but intercropping dandelion resulted in a signiﬁcant decrease of nutrients in the soil environment of pepper,so a reasonable intercropping distance was *** correlation analysis shows that the incidence of pepper blight(A)was signiﬁcantly positively correlated with soil temperature(Q),intercellular carbon dioxide(L),and canopy air temperature(O).The incidence of capsicum blight(A)was signiﬁcantly negatively correlated with chlorophyll content(F),net photo-synthetic rate(K),stomatal conductance(M),ww rate(N),soil sucrase activity(W),vitamin C(AB),and leaf PAL enzyme(J).Finally,it was deduced that intercropping dandelion could effectively control the occurrence of pepper blight while also demonstrating a complex interaction with the pepper growing environment.

关键词： Intercropping pepper blight dandelion plant growth correlation analysis

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新光滑多翅膀混沌系统研究

动力学与控制学报 2021年第4期19卷 16-24页

作者：李文静贾美美内蒙古工业大学电力学院呼和浩特010080 内蒙古自治区机电控制重点实验室呼和浩特010051

针对光滑多翅膀混沌系统不易于构造的问题,基于光滑代数函数提出两个新光滑多分段非线性函数,并用新光滑多分段非线性函数构造了新光滑单方向多翅膀S-M混沌系统和新光滑二方向网格多翅膀S-M混沌系统.然后,分析了两个新光滑多翅膀混沌系... 详细信息

针对光滑多翅膀混沌系统不易于构造的问题,基于光滑代数函数提出两个新光滑多分段非线性函数,并用新光滑多分段非线性函数构造了新光滑单方向多翅膀S-M混沌系统和新光滑二方向网格多翅膀S-M混沌系统.然后,分析了两个新光滑多翅膀混沌系统的非线性动力学行为,主要包括相图、平衡点、不变性、耗散性、李亚普诺夫指数、分维数和庞加莱截面,并得到了多翅膀混沌吸引子的产生机理.其产生机理为指标2鞍焦平衡点用于产生翅膀.此外,通过单方向多翅膀S-M混沌吸引子和二方向网格多翅膀S-M混沌吸引子的电路实现,验证了理论推导和数值仿真的正确性.

关键词：非线性动力学行为多翅膀混沌系统代数函数多分段非线性函数电路实现

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电压模式Buck变换器的分岔控制

内蒙古工业大学学报（自然科学版） 2017年第4期36卷 289-296页

作者：贾美美内蒙古工业大学电力学院呼和浩特010080

设计一个二阶非线性ADRC控制器来控制输入电压阶跃变化时电压模式Buck变换器中的周期2分岔。将输入电压的阶跃变化看作扰动,建立闭环控制系统的数学模型。基于该模型,通过数值仿真验证ADRC控制器是否能够控制电压模式Buck变换器中的分... 详细信息

设计一个二阶非线性ADRC控制器来控制输入电压阶跃变化时电压模式Buck变换器中的周期2分岔。将输入电压的阶跃变化看作扰动,建立闭环控制系统的数学模型。基于该模型,通过数值仿真验证ADRC控制器是否能够控制电压模式Buck变换器中的分岔行为。结果表明,ADRC控制器能够将电压模式Buck变换器中的周期2分岔调节到设定点,能够估计并补偿输入电压的阶跃变化。闭环控制系统对输入电压的阶跃变化具有良好的鲁棒性。

关键词：分岔控制输入电压变化跟踪控制 Buck变换器自抗扰控制器(ADRC)

Chaos Control for the Boost Converter under Current-mode Control

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Chaos Control for the Boost Converter under Current-mode Con...

基于新忆阻器的异质神经元混沌系统的动力学行为分析及电路实现

2010 Chinese Control and Decision Conference

作者： Lihong He,meimei jia,Zhongwen Dong,jianhua Wu School of Information Science and Engineering,Northeastern University,Shenyang,110004

Chaotic phenomena of the Boost converter under current-mode control are studied *** to the reference current I which works as a bifurcation parameter,the bifurcation map,the 3-period window diagram and the strange attractors of the intermittent chaos are obtained by applying the discrete *** employing a nonlinear feedback controller which is a piecewise-quadratic function in the form of x|x| in the chaotic Boost converter,chaos control of the Boost converter is *** simulation shows that this method is suitable for the stability control of diversified periodic orbits by adjusting the feedback gain in the nonlinear feedback controller.

关键词： Boost Converter Piecewise-quadratic Function x|x| Chaos Control Controllable Range Chart

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内蒙古工业大学学报（自然科学版） 2024年第6期43卷 561-570页

作者：徐赫阳贾美美内蒙古工业大学电力学院呼和浩特010080 内蒙古工业大学内蒙古自治区机电控制重点实验室呼和浩特010051

不同神经元的活动具有较大差异,忆阻电磁感应效应在同质神经元中得到了广泛研究,但鲜有在异质神经元中的研究。首先,基于柯西分布函数与双曲正切函数,提出一种新理想型磁控忆阻器,并对该忆阻器进行电路实现。将新理想型磁控忆阻器引入二... 详细信息

不同神经元的活动具有较大差异,忆阻电磁感应效应在同质神经元中得到了广泛研究,但鲜有在异质神经元中的研究。首先,基于柯西分布函数与双曲正切函数,提出一种新理想型磁控忆阻器,并对该忆阻器进行电路实现。将新理想型磁控忆阻器引入二维Hindmarsh-Rose(HR)神经元与二维Fitz Hugh-Nagumo(FHN)神经元中,构建具有忆阻电磁感应效应的五维忆阻耦合异质神经元混沌系统。其次,分析该混沌系统的动力学行为,包括相图、庞加莱截面、分岔图、李雅普诺夫指数等。最后,利用Multisim设计该混沌系统吸引子的电路实现,从而验证数值仿真的正确性。结果表明,五维忆阻耦合异质神经元混沌系统能够表现出切分岔、周期、混沌等丰富的非线性动力学行为。

关键词：磁控忆阻器异质神经元混沌周期电路实现

Understanding the local structure and thermophysical behavior of Mg-La liquid alloys via machine learning potential

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 439-449页

作者： jia Zhao Taixi Feng Guimin Lu National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and TechnologyShanghai 200237China Joint International Laboratory for Potassium and Lithium Strategic Resources East China University of Science and TechnologyShanghai 200237China

The local structure and thermophysical behavior of Mg-La liquid alloys were in-depth understood using deep potential molecular dynamic(DPMD) simulation driven via machine learning to promote the development of Mg-La alloys. The robustness of the trained deep potential(DP) model was thoroughly evaluated through several aspects, including root-mean-square errors(RMSEs), energy and force data, and structural information comparison results;the results indicate the carefully trained DP model is reliable. The component and temperature dependence of the local structure in the Mg-La liquid alloy was analyzed. The effect of Mg content in the system on the first coordination shell of the atomic pairs is the same as that of temperature. The pre-peak demonstrated in the structure factor indicates the presence of a medium-range ordered structure in the Mg-La liquid alloy, which is particularly pronounced in the 80at% Mg system and disappears at elevated temperatures. The density, self-diffusion coefficient, and shear viscosity for the Mg-La liquid alloy were predicted via DPMD simulation, the evolution patterns with Mg content and temperature were subsequently discussed, and a database was established accordingly. Finally, the mixing enthalpy and elemental activity of the Mg-La liquid alloy at 1200 K were reliably evaluated,which provides new guidance for related studies.

关键词： magnesium-lanthanum liquid alloys local structure macroscopic properties thermodynamic behavior deep potential mo-lecular dynamic simulation

新工科背景下基于“OBE+课程思政”理念的教学设计与实施——以“Java语言程序设计”为例

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南阳师范学院学报 2023年第1期22卷 60-63页

作者：张学钦贾媚媚南阳师范学院计算机科学与技术学院河南南阳473061

为了满足新工科建设对人才培养的新需求,以保证学生毕业时达到较高的能力及水平,教学改革势在必行.以“Java语言程序设计”课程为例,基于“OBE+课程思政”的教学理念,从学生毕业要求出发,结合课程教学实际深度挖掘思政元素,将思政目标... 详细信息

为了满足新工科建设对人才培养的新需求,以保证学生毕业时达到较高的能力及水平,教学改革势在必行.以“Java语言程序设计”课程为例,基于“OBE+课程思政”的教学理念,从学生毕业要求出发,结合课程教学实际深度挖掘思政元素,将思政目标与专业人才培养方案相结合,重构课程教学设计,优化教学实施方式,提出了一种符合新工科建设要求的教学设计方案,可以为新工科背景下程序设计语言类课程的教学改革提供参考.

关键词：新工科 OBE 课程思政 Java程序设计

基于新耦合Duffing振子系统的微弱信号检测

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内蒙古工业大学学报（自然科学版） 2022年第2期41卷 150-158页

作者：陈大全贾美美李娜内蒙古工业大学电力学院呼和浩特010080 内蒙古自治区机电控制重点实验室呼和浩特010051

为解决传统Duffing振子随机共振微弱信号检测效果较差的问题,提出新耦合Duffing振子随机共振微弱信号检测方法,通过构造一个新颖的非线性耦合形式将两个传统Duffing振子耦合在一起,并且以输出信噪比作为随机共振检测效果的评价指标,研... 详细信息

为解决传统Duffing振子随机共振微弱信号检测效果较差的问题,提出新耦合Duffing振子随机共振微弱信号检测方法,通过构造一个新颖的非线性耦合形式将两个传统Duffing振子耦合在一起,并且以输出信噪比作为随机共振检测效果的评价指标,研究了各参数对输出信噪比的影响。在输出信噪比最大时确定了参数选取的范围,然后把相关参数代入该随机共振模型中进行微弱信号检测。同时将轴承外圈故障信号分别输入到传统Duffing振子随机共振和耦合Duffing振子随机共振模型中,通过对比发现,新耦合Duffing振子随机共振模型对轴承外圈故障信号的检测效果更优,为新耦合Duffing振子随机共振模型在实际工程中的应用提供了参考和依据。

关键词：随机共振微弱信号检测耦合Duffing振子输出信噪比参数调节