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Robust Self-Triggered Min-Max Model Predictive Control for Linear Discrete-Time Systems

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Robust Self-Triggered Min-Max Model Predictive Control for L...

Djrho2 is involved in regeneration of visual nerves in Dugesia japonica

第36届中国控制会议

作者： changxin Liu Jian gao Huiping Li Demin Xu School of Marine Science and Technology Northwestern Polytechnical University

ISBN: (纸本)9781538629185

In this paper,we propose a self-triggered robust model predictive control（MPC） algorithm for constrained linear discrete-time systems subject to additive ***,worst case scenarios are considered in the MPC problem formulation to achieve robust constraint ***,a self-triggered control scheduler is proposed to minimize the frequency of performing optimization and the closed-loop system is shown to be recursive feasible and input-to-state practical stable in its region of ***,a numerical example demonstrates the effectiveness of the proposed control strategy.

关键词： Self-triggered control model predictive control(MPC) robust control linear discrete-time systems

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Journal of Genetics and Genomics 2010年第11期37卷 713-723页

作者： changxin Ma Yang gao Guoliang Chai Hanxia Su Niejun Wang Yigang Yang Chunbo Li Di Miao Wei Wu Protein Science Laboratory of the Ministry of Education School of Life Sciences Tsinghua University Beijing 100084 China School of Medicine Nankai University Tianjin 300071 China Department of Engineering Physics Ministry of Education Key Laboratory of Particle & Radiation Imaging Tsinghua University Beijing 100084 China Center of Biomedical Analysis Tsinghua University Beijing 100084 China

The freshwater planarian is a powerful animal model for studying regeneration and stem cell activity in vivo. During regeneration, stem cells （neoblasts in planarian） migrated to the wounding edge to re-build missing parts of the body. However, proteins involved in regulating cell migration during planarian regeneration have not been studied extensively. Here we report two small GTPase genes （Djrho2 and Djrho3） of Dugesiajaponica （strain Pek-1）. In situ hybridization results indicated that Djrho2 was expressed throughout the body with the exception of thc pharynx region while Djrho3 was specifically expressed along the gastro-vascular system. Djrho2 was largely expressed in neoblasts since its expression was sensitive to X-ray irradiation. In Djrho2-RNAi planarians, smaller anterior blastemas were observed in tail fragments during regeneration. Consistently, defective regeneration of visual nerve was detected by immunostairming with VC-1 antibody. These results suggested that Djrho2 is required for proper anterior regeneration in planairan. In contrast, no abnormality was observed after RNAi of Djrho3. We compared protein compositions of control and Djrho2-RNAi planarians using an optimized proteomic approach. Twenty-two up-regulated and 26 de-regulated protein spots were observed in the two-dimensional elec- trophoresis gels, and 17 proteins were successfully identified by Mass Spectrometry （MS） analysis. Among them, 6 actin-binding or cytoskeleton-related proteins were found de-expressed in Djrho2-RNAi animals, suggesting that abnormal cytoskeleton assembling and cell migration were likely reasons of defected regeneration.

关键词： planar/an Dugesiajaponica RNAi Rho GTPase proteomics

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市政污泥干化冷凝废水污染及防治措施概述

环境与发展 2019年第6期31卷 49-49,51页

作者：潘依依高长新浙江中蓝环境科技有限公司浙江温州325000 恒运市政园林建设有限公司浙江温州325000

污泥干化是污泥耦合燃煤发电前道工序,本文对污泥干化过程中产生的冷凝水水质影响因素进行分析,并提出相应污染防治措施。

关键词：市政污泥干化冷凝废水污染防治措施

钠冷快堆钠-空气热交换器风阀流热固耦合研究

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核动力工程 2024年第3期45卷 206-212页

作者：高博张宇景孙宝平刘盛兰州交通大学机电工程学院兰州730070 兰州长信电力设备有限责任公司兰州730101

针对核电钠冷快堆钠-空气热交换器风阀在高温工作环境下存在的叶片卡涩现象和阀体强度失效问题,设计了一种双叶片钠冷快堆钠-空气热交换器风阀。利用流热固耦合方法对该风阀在不同开度下的流场流动特性、阀体温度分布、阀体变形及应力... 详细信息

针对核电钠冷快堆钠-空气热交换器风阀在高温工作环境下存在的叶片卡涩现象和阀体强度失效问题,设计了一种双叶片钠冷快堆钠-空气热交换器风阀。利用流热固耦合方法对该风阀在不同开度下的流场流动特性、阀体温度分布、阀体变形及应力情况进行了研究。结果表明:①风阀在开度45°以下时,流体通过风阀前后会产生明显的速度梯度和压力梯度;②局部温差越大的区域热应力值越大,最大应力为206.94 MPa,出现在框架侧密封板边缘处,最大应力值符合材料强度要求;③阀体变形及应力主要为受热引起的热变形和热应力,风阀最大变形量为3.3368 mm且框架变形量在各个方向均大于叶片变形量,新设计的风阀不会产生叶片卡涩现象。

关键词：钠-空气热交换器风阀流热固耦合热应力

基于应答器位置测量的AUV非线性模型预测对接控制

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西北工业大学学报 2015年第5期33卷 860-866页

作者：高剑刘昌鑫西北工业大学航海学院陕西西安710072

针对搭载超短基线(USBL)声学定位系统的全驱动自主水下航行器(AUV)的自主回坞控制问题,提出一种基于应答器位置测量的回坞预测控制算法。首先用体坐标系下的应答器位置测量定义回坞对接误差,基于Jacobian矩阵描述应答器位置测量与AUV速... 详细信息

针对搭载超短基线(USBL)声学定位系统的全驱动自主水下航行器(AUV)的自主回坞控制问题,提出一种基于应答器位置测量的回坞预测控制算法。首先用体坐标系下的应答器位置测量定义回坞对接误差,基于Jacobian矩阵描述应答器位置测量与AUV速度之间的运动学关系,建立非线性对接误差模型。采用非线性模型预测控制求解对接控制问题,产生航行器速度指令。然后设计自适应速度控制器实现对速度指令的全局渐近跟踪。最后采用REMUS AUV的模型参数进行了仿真研究,结果验证了方法的有效性。

关键词：自主水下航行器对接逆USBL定位系统模型预测控制自适应控制系统

Integrating climate, biodiversity, and sustainable land-use strategies:innovations from China

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National Science Review 2021年第7期8卷 13-17页

作者： Guido Schmidt-Traub Harvey Locke Jixi gao Zhiyun Ouyang Justin Adams Lin Li Enric Sala M.Rebecca Shaw Sebastian Troёng Jing Xu Chunquan Zhu changxin Zou Tianxiao Ma Fuwen Wei Sustainable Development Solutions Network Beyond the Aichi Targets Task Force IUCN World Commission on Protected Areas Yellowstone to Yukon Conservation Initiative Center for Satellite Applications on Ecology and Environment Ministry of Ecology and Environment Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Tropical Forest Alliance World Economic Forum Worldwide Fund for Nature National Geographic Society Conservation International Chinese Research Academy of Environmental Sciences Nature Initiatives and Tropical Forest Alliance World Economic Forum Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment Institute of Zoology Chinese Academy of Sciences

To reverse the accelerating degradation of biodiversity and ecosystem services(‘nature’) and climate [1,2], the Convention on Biological Diversity (CBD)and the UN Framework Convention on Climate Change (UNFCCC) will hold major meetings in 2021. We argue that, as a critical priority, countries need to design and implement integrated national strategies to achieve the goals of the three Rio Conventions (including the UN Convention to Combat Desertification—UNCCD) using spatially explicit analyses and policies. This integration can maximize co-benefits and help manage trade-offs to meet the Sustainable Development Goals(SDGs). Nature-based solutions (NBS)provide an important framework for such integration.

关键词： ECOSYSTEM SERVICES

Benefit Assessment of Forest Function in Reducing Soil Erosion and Nutrient Loss in Anji County of Taihu Lake Basin

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Asian Agricultural Research 2013年第4期5卷 93-96,100页

作者： Biao ZHANG Jixi gao gaodi XIE changxin ZOU Bin WANG Institute of Geographical Sciences and Natural Resources Research CAS Nanjing Institute of Environmental Sciences Ministry of Environmental Protection Research Institute of Subtropical Forestry Chinese Academy of Forestry

The non-point source pollution arising from soil erosion is one of the main reasons for the deterioration of the water quality of the Taihu Lake Basin. Forest plays an important role in controlling soil erosion and reducing nutrient loss. Based on the survey data on forest resources in Anji County, we estimate the amount of soil erosion and nutrient loss of nitrogen and phosphorus reduced by forest, using soil erosion modulus method and soil nutrient content. In accordance with the degradation coefficient of pollutant and regional compensation standards of environmental resources, we assess the ecological benefits of forest function in reducing nutrient loss of nitrogen and phosphorus in Anji County. The results show that the forest in Anji County can reduce the soil erosion amount at 1.51 million t annually on the average, so as to control the nutrient loss of 1 409 t of total nitrogen and 577 t of total phosphorus in soil, equivalent to annually avoiding the flow of 824 t of total nitrogen and 410 t of total phosphorus into river water; this ecological service function can make forests in Anji County get 92.55 million yuan of ecological compensation funds (about 688 yuan/hm2·a), equivalent to 15 times of the current ecological compensation standard (47 yuan/hm2). The study reveals the importance of forest function in controlling soil erosion and nutrient loss in the upper reaches of Taihu Lake Basin to water environment protection in the basin, conducive to carrying out pollution control and protection work of the water environment in the basin.

关键词： Forest Soil erosion. Nutrient control Benefit asse

《中医养生保健服务(非医疗)技术操作规范足浴(2024年版)》编制说明

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国际中医中药杂志 2024年第10期46卷 1258-1263页

作者：张龄匀于长禾刘长信刘鲁平高艺轩刘佳彧王宇涵张蒙蒙张洋王锡友北京中医药大学东直门医院推拿科北京北京中医药大学第一临床医学院北京

足浴技术在日常保健服务中蓬勃发展, 为制订出更加规范、完整的技术操作流程, 工作组在撰写《中医养生保健服务(非医疗)技术操作规范足浴(2024年版)》的同时, 记录了文件制订的全过程, 详细深入地说明了工作简况(包括任务背景、任务来... 详细信息

足浴技术在日常保健服务中蓬勃发展, 为制订出更加规范、完整的技术操作流程, 工作组在撰写《中医养生保健服务(非医疗)技术操作规范足浴(2024年版)》的同时, 记录了文件制订的全过程, 详细深入地说明了工作简况(包括任务背景、任务来源、起草单位、参与人员分组及职责)、主要技术内容(包括编制依据和原则、技术规范的关键技术内容)、主要编制过程(组建工作组、注册及计划书撰写、临床问题的遴选与确定、文献研究、撰写初稿、就技术规范主要内容达成共识、征求意见、测试应用及外审)、与现行强制性国家标准或政策法规的关系、重大分歧意见的处理经过和依据、宣传贯彻及后效评价、废止现行有关指南的建议及相应附件, 可辅助非医疗机构相关从业人员更好地理解与应用本技术规范。

关键词：外治疗法足浴养生保健技术操作规范编制说明

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新方斗山隧道岩溶发育特征及铁路选线研究

铁道工程学报 2023年第10期40卷 40-44页

作者：徐学渊高楠魏昌辛中铁二院工程集团有限责任公司成都610031

研究目的:新方斗山隧道穿越川东隔挡式褶皱,受地层岩性组合、构造、地形地貌控制,形成独特的岩溶地貌景观和岩溶水循环模式,隧道施工涌突水风险高,对地表环境影响大。通过对方斗山岩溶发育特征研究,选择合理线路穿越位置,以期达到有效... 详细信息

研究目的:新方斗山隧道穿越川东隔挡式褶皱,受地层岩性组合、构造、地形地貌控制,形成独特的岩溶地貌景观和岩溶水循环模式,隧道施工涌突水风险高,对地表环境影响大。通过对方斗山岩溶发育特征研究,选择合理线路穿越位置,以期达到有效降低隧道施工风险和对环境影响的目的。研究结论:(1)方斗山背斜岩溶发育深度一般在150~200 m之间,但是在接触带岩溶发育深度较深;(2)方斗山断层属压性断裂,断层倾角陡,两盘强烈挤压,岩溶不发育;(3)北西翼地下水排泄量大,富水性好;南东翼岩溶发育程度相对较弱、发育深度浅,富水性相对较差;(4)方案选择宜靠近既有隧道,利用降落漏斗,一方面可以降低岩溶水风险,另一方面可以减小地表水疏干范围,降低对环境影响;(5)方斗山背斜属川东平行岭谷区典型隔挡式褶皱,本研究成果对川东隔挡式背斜岩溶区隧道勘察及地质选线具有指导意义。

关键词：岩溶水铁路选线发育碳酸盐岩非可溶岩降落漏斗