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A Visualization Method of Requirement Checking Based on Software Behavior
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作者 HUANG Bo WU Guoqing WAN Li LI Lin WANG Jun 《Wuhan University Journal of Natural Sciences》 CAS 2011年第6期507-512,共6页
In order to verify requirements model/document the consistency between software and users' true minds, we present a software behavior-oriented requirements visualization method. The implementation method for software... In order to verify requirements model/document the consistency between software and users' true minds, we present a software behavior-oriented requirements visualization method. The implementation method for software behavior-oriented requirements visualization is advanced in this paper first. Then, the basis language is introduced as the foundation of the method. At last, we put forward the tool platform that can achieve the requirement visualization, The result demonstrates that the method can generate requirement animation rapidly to check the correctness of the requirement. It can effectively reduce the requirements change and save a lot of software development costs. 展开更多
关键词 requirements engineering requirement checkingvisualization software viewpoints behavior requirement visuali-zation program
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Re-measuring Productivity, Energy and Environmental Factors of China's New Industrialization
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作者 庞瑞芝 李鹏 路永刚 《China Economist》 2011年第6期68-80,共13页
This paper identifies low-carbon, energy-efficient, and green economic growth as the primary goals of China's new industrialization and defines productivity under new industrialization which; unlike conventional prod... This paper identifies low-carbon, energy-efficient, and green economic growth as the primary goals of China's new industrialization and defines productivity under new industrialization which; unlike conventional productivity, simultaneously satisfies these goals. In contrast to conventional methods for measuring productivity, this paper employs a non-radial, non-angular SBM directional distance function to estimate new industrialization productivity of industrial sectors across 30 Chinese provinces, municipalities and autonomous regions between 1998 and 2008. Our research shows that conventional measurements of productivity overestimate industrial growth in China's central and western regions. On the whole, prospects for growth performance of China's industrial sectors are not optimistic. The degree of new industrialization is higher in eastern region than in central and western regions, where balancing industrial growth with resources and the environment is a daunting task. This paper's conclusions support "environmental Kuznets curve" and "Porter hypothesis" but reject "pollution asylum hypothesis ". 展开更多
关键词 growth performance of new industrialization productivity under "new triah'zation SBM directional distance function
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Evaluation of Carotid Plaque Neovascularization in Patients with Diabetes Mellitus by Contrast-enhanced Ultrasonography 被引量:5
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作者 熊莉 黎鹏 赵博文 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2014年第1期29-32,共4页
This study investigated the relationship between carotid plaque neovascularization and diabetes mellitus(DM) by using contrast-enhanced ultrasonography. Contrast-enhanced ultrasonography was performed in 104 patient... This study investigated the relationship between carotid plaque neovascularization and diabetes mellitus(DM) by using contrast-enhanced ultrasonography. Contrast-enhanced ultrasonography was performed in 104 patients with carotid plaque thicker than 2.0 mm. There were 36 patients with DM and 68 patients without DM. The enhanced intensity in the plaque and the ratio of enhanced intensity in the plaque to that in the lumen of the carotid artery in patients with DM were significantly greater than those in patients without DM. Our study demonstrated that the enhanced intensity in patients with DM is greater than that their counterparts without DM, suggesting that carotid plaque in DM patients may have more neovessels and may be more vulnerable. 展开更多
关键词 vulnerable plaque contrast-enhanced ultrasonography diabetes mellitus neovasculari-zation
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Amplification of Functional Myeloid-derived Suppressor Cells during Stem Cell Mobilization Induced by Granulocyte Colony-stimulation-factor 被引量:1
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作者 朱晓健 胡静 +6 位作者 孙立 肖音 陈智超 游泳 邹萍 王红祥 仲照东 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2013年第6期817-821,共5页
The effects of granulocyte colony-stimulation-factor (G-CSF) on stem cell mobilization and its impact on the amplification of myeloid-derived suppressor cells (MDSCs) of donor mice were ex- amined. A mouse model o... The effects of granulocyte colony-stimulation-factor (G-CSF) on stem cell mobilization and its impact on the amplification of myeloid-derived suppressor cells (MDSCs) of donor mice were ex- amined. A mouse model of stem cell mobilization was established by consecutive subcutaneous injec- tion of 100 μg/kg G-CSF for 5 days. The blood from the donor mice was routinely examined during mobilization. Stem cells and MDSCs were analyzed by flow cytometry. The immunosuppressive mole- cules derived from MDSCs in serum and spleen, including hydrogen dioxide (H202) and nitric oxide (NO), and the activity of nitric oxide synthase (NOS) were determined during the mobilization. Apop- tosis of T lymphocytes was assessed by using Annexin-V/PI. During stem cell mobilization, the number of lymphocytes and white blood cells in the peripheral blood was increased, and peaked on the 4th day. The number of stem cells in G-CSF-treated mice was significantly greater than that in controls (P〈0.01). The expansions of MSDCs were also observed after G-CSF mobilization, with a more notable rate of growth in the peripheral blood than in the spleen. The activity of NOS and the production of NO were increased in the donor mice, and the serum H202 levels were approximately 4-fold greater than the con- trois. Consequently, apoptosis of T lymphocytes was increased and showed a positive correlation with the elevated percentage of MDSCs. It was concluded that G-CSF could provide sufficient peripheral blood stem cells for transplantation. Exogenous administration of G-CSF caused the accumulation of MDSCs in the peripheral blood and the spleen, which could lead to apoptosis ofT lymphocytes and may offer a new strategy for the prevention and treatment of graft versus host disease. 展开更多
关键词 myeloid-derived suppressor cells granuloeyte colony-stimulation-factor stem cell mobili- zation TRANSPLANTATION immunosuppressive molecules
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Synthesis and Characterization of Heteropolytungstosilicate Complexes with the Lanthanide Elements 被引量:1
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作者 WANG Zhan-wen , WU Nai-jun and WANG Shu-fang (Department of Applied Chemistry. Nanjing Institute of Chemical Technology, Nanjing 210009) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1992年第4期343-347,共5页
Lanthanide heteropoly compounds K15[Ln(HSiW9O34)2]·28H2O(Ln = La, Ce, Nd), denoted as Ln(SiW9)2, were synthesized and characterized by element analysis, TG-DTA, IR, UV, XPS and XRD. The results show that partial ... Lanthanide heteropoly compounds K15[Ln(HSiW9O34)2]·28H2O(Ln = La, Ce, Nd), denoted as Ln(SiW9)2, were synthesized and characterized by element analysis, TG-DTA, IR, UV, XPS and XRD. The results show that partial oxygen in Ln(SiW9)2 was coordinated with Ln3- , where Ln-3 was in the inner side of the heteropoly anions, while the fundamental structure of SiW9 had little change. The result was supported by ion exchange experiment. 展开更多
关键词 Tungstosilicic heteropoly complex Lanthanide elements SYNTHESIS Characteri-zation.
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Wideband acoustic source localization using multiple spherical arrays : anangular-spectrum smoothing approach
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作者 王方洲 潘曦 《Journal of Beijing Institute of Technology》 EI CAS 2015年第1期18-25,共8页
A novel algorithm using multiple spherical arrays based on spherical harmonic analysis is proposed to localize wideband acoustic sources. In the novel spherical harmonic algorithm, the re- ceived microphone signals ar... A novel algorithm using multiple spherical arrays based on spherical harmonic analysis is proposed to localize wideband acoustic sources. In the novel spherical harmonic algorithm, the re- ceived microphone signals are firstly used to do the spherical Fourier transformation. Then, the mul- tiple signal classification (MUSIC) algorithm is applied to the spherical components to obtain the an- gular-spectrum. Finally, the angular-spectrum smoothing technique is proposed to obtain the accu- rate localization of wideband sources. In contrast to the traditional single spherical array, the multi- pie spherical arrays used in this paper consist of several randomly distributed spheres in a given plane. The microphones are uniformly placed on each sphere, the same as the usual single spherical array. Simulation comparison of wideband sources localization between a single spherical array and multiple spherical arrays based on the novel algorithm is carried out to validate our proposed meth- od. 展开更多
关键词 multiple spherical array spherical harmonicanalysis wideband sources source locali-zation
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New Rural Community Planning to Cope with the Coordinated “Threezation”
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作者 XIAO Zhetao 《Journal of Landscape Research》 2014年第2期21-24,共4页
The paper targets at reasonable planning and construction of new rural communities on the basis of coordinated "three-zation"(new urbanization, industrialization and agricultural modernization, hereinafter r... The paper targets at reasonable planning and construction of new rural communities on the basis of coordinated "three-zation"(new urbanization, industrialization and agricultural modernization, hereinafter referred to as "three-zation"). Through summarizing the connotations of new rural community construction coping with the coordinated "three-zation", and analyzing the role of new rural community in the "three-zation", planning and design of Gaocun Community was taken for example to propose strategies for the planning and construction of new rural communities, and promotion of the coordinated "three-zation". 展开更多
关键词 New rural community Coordinated "three-zation" Planning strategy
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Study of Test Flow Optimization Method in Radar Fault Isolation
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作者 Zhi-Hua Li Qing Zheng Xiao-An Song 《Journal of Electronic Science and Technology of China》 2009年第4期395-398,共4页
In order to optimize test flow after the default flow is modified by a tester, a new software framework for the radar fault isolation is illustrated. This framework separates all mapping algorithms from test flows so ... In order to optimize test flow after the default flow is modified by a tester, a new software framework for the radar fault isolation is illustrated. This framework separates all mapping algorithms from test flows so as to modify flow and to insert mapping algorithm dynamically in testing process. Based on this framework, a kind of optimization method of test flow is proposed and studied. By defining an objective function, we can evaluate all candidate test flows so as to get an optimized flow. An example explains how to search the flow from candidate flows. 展开更多
关键词 Automatic test fault isolation optimi- zation RADAR software framework.
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Bayesian optimization algorithm-based methods searching for risk/protective factors
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作者 WEI Bin PENG QinKe +1 位作者 CHEN Xiao ZHAO Jing 《Chinese Science Bulletin》 SCIE EI CAS 2013年第23期2828-2835,共8页
The risks of developing complex diseases are likely to be determined by single nucleotide polymorphisms (SNPs), which are the most common form of DNA variations. Rapidly developing genotyping technologies have made it... The risks of developing complex diseases are likely to be determined by single nucleotide polymorphisms (SNPs), which are the most common form of DNA variations. Rapidly developing genotyping technologies have made it possible to assess the influence of SNPs on a particular disease. The aim of this paper is to identify the risk/protective factors of a disease, which are modeled as a subset of SNPs (with specified alleles) with the maximum odds ratio. On the basis of risk/protective factor and the relationship between nucleotides and amino acids, two novel risk/protective factors (called k-relaxed risk/protective factors and weighted-relaxed risk/protective factors) are proposed to consider more complex disease-associated SNPs. However, the enormous amount of possible SNPs interactions presents a mathematical and computational challenge. In this paper, we use the Bayesian Optimization Algorithm (BOA) to search for the risk/protective factors of a particular disease. Determining the Bayesian network (BN) structure is NP-hard; therefore, the binary particle swarm optimization was used to determine the BN structure. The proposed algorithm was tested on four datasets. Experimental results showed that the algorithm proposed in this paper is a promising method for discovering SNPs interactions that cause/prevent diseases. 展开更多
关键词 贝叶斯算法 保护因子 风险 单核苷酸多态性 基础 贝叶斯优化算法 NP-HARD 粒子群优化算法
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改进增广径向基在远程制导火箭优化设计中的应用 被引量:1
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作者 蔡伟伟 田镜文 +3 位作者 赵一 李国盛 武泽平 杨乐平 《国防科技大学学报》 北大核心 2025年第6期145-156,共12页
为提高远程制导火箭的性能和设计效率,建立了远程制导火箭多学科参数化模型,实现制导火箭高精度性能仿真。提出了基于改进增广径向基的序列近似优化方法,通过各向异性技术提高增广径向基模型的泛化能力,采用递归演化实验设计和快速交叉... 为提高远程制导火箭的性能和设计效率,建立了远程制导火箭多学科参数化模型,实现制导火箭高精度性能仿真。提出了基于改进增广径向基的序列近似优化方法,通过各向异性技术提高增广径向基模型的泛化能力,采用递归演化实验设计和快速交叉验证提高近似建模效率,并应用非精确搜索策略进行序列采样,结合算例验证了所提出方法的有效性。开展了远程制导火箭序列近似优化设计,在满足设计约束的前提下,最大射程相较优化前提高了16.7%。 展开更多
关键词 远程制导火箭 代理模型 多学科优化设计 序列近似优化
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软件中试的概念及内涵分析
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作者 罗银 李盼盼 +2 位作者 杨东裕 张向阳 陈丽娟 《电子产品可靠性与环境试验》 2025年第1期54-57,共4页
首先,参考传统中试的概念,结合软件的特点,提出了软件中试的定义;然后,结合软件生命周期过程,将其与传统的企业自测试、第三方测试和用户验收测试等进行了比较;最后,从软件中试加快软件产品迭代优化、质量改进和“熟化”的角度,阐述了... 首先,参考传统中试的概念,结合软件的特点,提出了软件中试的定义;然后,结合软件生命周期过程,将其与传统的企业自测试、第三方测试和用户验收测试等进行了比较;最后,从软件中试加快软件产品迭代优化、质量改进和“熟化”的角度,阐述了软件中试的内涵。 展开更多
关键词 软件中试 概念 内涵 熟化 迭代优化 质量改进
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物联网在移动式压力容器充装中的应用
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作者 王超 《石油化工设备技术》 2025年第3期36-40,I0002,I0003,共7页
当前,移动式压力容器管理存在诸多薄弱环节,如使用单位违规使用、充装单位违规操作、监管存在漏洞等。为此,需建立一套能客观收集移动式压力容器充装信息的系统对其进行规范化管理。移动式压力容器物联网动态监管系统依靠全国移动式压... 当前,移动式压力容器管理存在诸多薄弱环节,如使用单位违规使用、充装单位违规操作、监管存在漏洞等。为此,需建立一套能客观收集移动式压力容器充装信息的系统对其进行规范化管理。移动式压力容器物联网动态监管系统依靠全国移动式压力容器追溯平台,在现场安装防爆充装控制器,并配置防爆手持终端,可通过物联网和互联网实现移动式压力容器的合法性判定、充装设备控制和数据互通,使移动式压力容器充装工作的安全性得到提升,同时还可实现充装过程的自动化和信息化,提高移动式压力容器充装工作的效率。 展开更多
关键词 移动式压力容器 充装 特种设备 物联网 信息化
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新质生产力视域下地方应用型高校人才培养的理念及模式——以乐山师范学院为例
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作者 谢艺泉 《乐山师范学院学报》 2025年第12期126-133,共8页
在新质生产力理论视域中,新质生产力发展的核心驱动力在于新质人才。地方应用型本科高校肩负着为地方新质生产力发展培养新质人才的重要使命。然而该类高校传统的应用型人才培养存在一些问题,亟需从育人理念、培养模式等诸多方面进行改... 在新质生产力理论视域中,新质生产力发展的核心驱动力在于新质人才。地方应用型本科高校肩负着为地方新质生产力发展培养新质人才的重要使命。然而该类高校传统的应用型人才培养存在一些问题,亟需从育人理念、培养模式等诸多方面进行改革。以乐山师范学院为例,从系统性思维出发,提出地方高校新质人才培养的“三化”理念,即专业化强基固本、职业化赋能增才和个性化提质培优。以此理念为引领,构建起专业融合、课程融合、学用创融合、校政行企融合和师资融合。“五融合”的应用型人才培养模式,改革的实践探索为地方应用型本科高校新质人才培养提供了一种可资借鉴的模式。 展开更多
关键词 新质生产力 地方应用型本科高校 “三化” “五融合”
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数字经济对中国式现代化的影响研究--基于科技创新和产业结构优化升级视角
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作者 万光彩 任改改 《山西师范大学学报(自然科学版)》 2025年第3期135-146,共12页
使用2011年-2021年中国30个省市(除港澳台和西藏自治区)的面板数据,在理论分析的基础上,实证检验数字经济对中国式现代的影响效应和作用机制.结果表明:数字经济能够显著推进中国式现代化的发展,该结论在多种内生性和稳健性检验条件下依... 使用2011年-2021年中国30个省市(除港澳台和西藏自治区)的面板数据,在理论分析的基础上,实证检验数字经济对中国式现代的影响效应和作用机制.结果表明:数字经济能够显著推进中国式现代化的发展,该结论在多种内生性和稳健性检验条件下依然成立.影响机制效应分析显示,数字经济对中国式现代化的影响机制存在科技创新和产业结构优化升级两个渠道.异质性分析显示,数字经济对经济、政治、文化、社会现代化四个维度具有正向促进作用,但是对生态文明现代化影响并不显著;区域异质性分析显示,数字经济对我国东、中、西部中国式现代化发展均具有显著的促进作用,并且对于中、西部作用效果大于东部地区;人力资本对中国式现代化发展具有显著门槛效应,且正向影响随门槛值的提高逐渐增加. 展开更多
关键词 数字经济 中国式现代化 科技创新 产业结构优化升级 人力资本
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考虑头程运输中断的海外仓选址-库存研究
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作者 税文兵 周陈亮 《中国科技论文》 2025年第4期317-327,共11页
针对跨境电商在自建海外仓时由头程运输中断带来的不确定性,提出了一个海外仓选址-库存优化模型。采用三角模糊数表征订货提前期的不确定性,并设计黑寡妇优化(blackwidowoptimization,BWO)算法进行求解。结果表明,该算法在适应度和收敛... 针对跨境电商在自建海外仓时由头程运输中断带来的不确定性,提出了一个海外仓选址-库存优化模型。采用三角模糊数表征订货提前期的不确定性,并设计黑寡妇优化(blackwidowoptimization,BWO)算法进行求解。结果表明,该算法在适应度和收敛速度上均优于遗传算法和粒子群算法。最后对头程运输中断持续天数进行灵敏度分析,结果显示:本文模型能显著优化系统目标,可将系统目标优化1.7%以上;即使在海外仓头程运输阶段没有发生中断现象,优化结果与最优目标值的差距也仅有1.8%。 展开更多
关键词 海外仓选址-库存 运输中断 模糊提前期 黑寡妇优化算法
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国家公园生态产品价值实现的理论阐释与实践路径 被引量:1
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作者 丘水林 李忠 《宏观经济研究》 北大核心 2025年第7期99-109,共11页
中国正在建设全世界最大的国家公园体系,以生态产品价值实现推进国家公园高质量发展,生动体现了“两山”理念引领生态文明建设的中国智慧和中国方案。国家公园生态产品价值实现是具有多方参与性、复杂性、额外性、条件性等特征的有机系... 中国正在建设全世界最大的国家公园体系,以生态产品价值实现推进国家公园高质量发展,生动体现了“两山”理念引领生态文明建设的中国智慧和中国方案。国家公园生态产品价值实现是具有多方参与性、复杂性、额外性、条件性等特征的有机系统,其基本逻辑在于通过系统内部不同层次内容的相互联系和加强与外部环境的动态联系推动生态产品价值显化和提升。当前,产权条件、价值核算、补偿激励、经营开发、绿色金融以及数字赋能等仍然是国家公园生态产品价值实现的刚性约束。为此,亟需坚持立足国情实际和借鉴国外经验相结合,推进国家公园自然资源确权登记和设权赋能,加快国家公园生态产品价值核算标准化建设,建立激励相容的国家公园综合生态补偿机制,因地制宜探索多样化生态产品经营开发方式,构建以市场需求为导向的绿色金融创新体系,拓展数字技术在重点环节的应用深度和广度。 展开更多
关键词 生态产品 价值实现 高质量发展 国家公园
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复合驱动柔顺指向平台优化设计与分析
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作者 杨剑 郝广波 闫鹏 《光学精密工程》 北大核心 2025年第24期3850-3863,共14页
针对空间光学仪器不同工况下的角度精细调整问题,设计了压电-电磁复合驱动的对称过约束柔顺指向平台。根据弹性梁、伪刚体理论和传递矩阵建立了复合驱动柔顺指向平台的角刚度分析模型。通过有限元及实验验证平台理论角刚度结果的准确性... 针对空间光学仪器不同工况下的角度精细调整问题,设计了压电-电磁复合驱动的对称过约束柔顺指向平台。根据弹性梁、伪刚体理论和传递矩阵建立了复合驱动柔顺指向平台的角刚度分析模型。通过有限元及实验验证平台理论角刚度结果的准确性,由理论解析方程解析了材料和重要几何参数与平台运动特性的映射关系。为了进一步提高平台在传动比和固有频率方面的综合特性,采用有限元方法对初始结构设计进行了拓扑优化处理,对比探究了载荷变化对指向平台偏摆角度、传动比及轴间耦合等运动性能的影响。最后,加工实验样机对复合驱动指向平台的性能进行测试。有限元和实验结果表明:拓扑结构相比初始结构在功能方向的固有频率分别提高了168.99%和170.00%,角刚度平均提升了15.33%,最大寄生耦合比降低了20.29%;同时,通电线圈能够有效调节指向平台偏摆角度,抵抗平台载荷引起的偏转损失。综合有限元和实验结果,提出的平台设计方案能够同时实现较高工作频率和高精度定位性能。 展开更多
关键词 过约束构型 电磁 压电驱动 拓扑优化 精密定位
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针对分布式扰动引发强迫振荡的储能抑制策略
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作者 熊振钦 魏繁荣 +3 位作者 江毅 翁汉琍 孙超 林湘宁 《电力系统及其自动化学报》 北大核心 2025年第3期1-10,共10页
为应对分布式扰动源引发的强迫振荡问题,基于广域测量信息提出储能补偿的强迫振荡抑制方法。首先,通过对多机系统进行模态分析,获得分布式扰动注入下的强迫振荡响应,并揭示储能系统对电网注入周期性功率时与扰动源相似的本质;其次,基于... 为应对分布式扰动源引发的强迫振荡问题,基于广域测量信息提出储能补偿的强迫振荡抑制方法。首先,通过对多机系统进行模态分析,获得分布式扰动注入下的强迫振荡响应,并揭示储能系统对电网注入周期性功率时与扰动源相似的本质;其次,基于广域测量信息提出控制储能系统引起反相振荡的强迫振荡抑制方法;然后,研究分布式储能协同抑制强迫振荡的场景,制定以完全抑制振荡时储能资源耗费最小为目标的分布式储能协同控制策略;最后,以IEEE39节点系统为例验证所提方法的有效性。 展开更多
关键词 强迫振荡 储能补偿 广域测量信息 协同优化策略
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“ 全球南方” 的粮农治理困境:成因分析、改革探索与中国因应
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作者 赵文杰 徐秀丽 李小云 《太平洋学报》 北大核心 2025年第9期15-28,共14页
在全球农业价值链紧密相连的当下,“全球南方”面临着复杂的粮农治理困境,并突出表现于粮食安全状况不佳、农业生产力不高、在农业贸易与投资中竞争力不足、非传统威胁和技术鸿沟加剧等方面。这一境况既源于南方国家内部的发展制约,也... 在全球农业价值链紧密相连的当下,“全球南方”面临着复杂的粮农治理困境,并突出表现于粮食安全状况不佳、农业生产力不高、在农业贸易与投资中竞争力不足、非传统威胁和技术鸿沟加剧等方面。这一境况既源于南方国家内部的发展制约,也与国际环境息息相关,而当前全球粮农治理体系存在的诸多不合理因素和结构性困境是根本原因。面对自身及全球农业发展中的复杂问题与挑战,“全球南方”正通过多种途径积极推动全球粮农治理体系改革,逐步形成具有“南方特色”的全球粮农治理模式。对于中国而言,要协同“全球南方”更好地推动全球粮农治理体系改革,应坚持以粮食安全和减贫为核心战略支点,高度重视国际规则的重要作用,充分利用好联合国粮农组织等各类多边平台,并强化全球粮农治理相关研究。 展开更多
关键词 “全球南方” 全球粮农治理 粮食安全 国际组织 全球治理倡议
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