检索结果-南通市图书馆

Dynamic Setting Method of Assessment Indicators for Power Curves of Renewable Energy Sources Considering Scarcity of Reserve Resources

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Power Systems and Clean Energy 2024年第1期12卷 101-114页

作者： Minghao cao Jilai Yu the Department of Electrical Engineering Harbin Institute of TechnologyHarbinChina

With the increasing proportion of renewable energy sources(RESs)in power grid,the reserve resource(RR)scarcity for correcting power deviation of RESs has become a potential ***,the power curve of RES needs to be more rigorously *** RR scarcity varies during different time periods,so the values of assessment indicators should be dynamically *** assessment indicators in this paper include two aspects,i.e.,deviation exemption ratio and penalty ***,this paper proposes a method for dynamically calculating the supply capacity and RR cost,primarily taking into account the operating status of thermal units,forecast information of RES,and load ***,after clarifying the logical relationship between the degree of RR scarcity and the values of assessment indicators,this paper establishes a mapping function between *** on this mapping function,a dynamic setting method for assessment indicators is *** the future,RES will generally be equipped with battery energy storage systems(BESSs).Reasonably utilizing BESSs to reduce the power deviation of RESs can increase the expected income of ***,this paper proposes a power curve optimization strategy for RESs considering self-owned *** case study demonstrates that the dynamic setting method of assessment indicators can increase the revenue of RESs while ensuring that the penalty fees paid by RESs to the grid are sufficient to cover the RR ***,the power curve optimization strategy can help RESs further increase income and fully utilize BESSs to reduce power deviation.

关键词： Renewable energy battery energy storage system(BESS) power curve assessment reserve service parameter setting

在线全文

学校读者我要写书评

暂无评论

楚文字“■”及相关诸字用字研究

中国文字研究 2023年第2期38卷 65-73页

作者：曹雨杨清华大学人文学院清华大学出土文献研究与保护中心北京100084

本文详细梳理了战国楚文字中的“■”字以及从其得声诸字的字形及用法。运用全面计量统计的方式总结了“■”字及相关字的字词关系,明晰了诸字记词的主次关系,并将其区分为两个层级。还校读了出土文献中的相关字词。

关键词：战国楚文字用字 ■

Bioinspired Closed-loop CPG-based Control of a Robotic Manta for Autonomous Swimming

在线全文

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2024年第1期21卷 177-191页

作者： Yiwei Hao Yonghui cao Yingzhuo cao Xiong Mo Qiaogao Huang Lei Gong Guang Pan Yong cao School of Marine Science and Technology Northwestern Polytechnical UniversityXi'an 710072China Unmanned Vehicle Innovation Center Ningbo Institute of NPUNingbo 315103China Key Laboratory of Unmanned Underwater Vehicle Technology of Ministry of Industry and Information Technology Xi'an 710072China

Fish in nature exhibit a variety of swimming modes such as forward swimming,backward swimming,turning,pitching,etc.,enabling them to swim in complex scenes such as coral *** is still difficult for a robotic fish to swim autonomously in a confined area as a real ***,we develop an untethered robotic manta as an experimental platform,which consists of two flexible pectoral fins and a tail fin,with three infrared sensors installed on the front,left,and right sides of the head to sense the surrounding *** generate multiple swimming modes of the robotic manta and online switching of different modes,we design a closed-loop Central Pattern Generator(CPG)controller based on distance information and use a combination of phase difference and amplitude of the CPG model to achieve stable and rapid adjustment of yaw *** verify the autonomous swimming ability of the robotic manta in complex scenes,we design an experimental scenario with a concave *** experimental results show that the robotic manta can achieve forward swimming,backward swimming,in situ turning within the concave obstacle,and finally exit from the area safely while relying on the perception of external obstacles,which can provide insight into the autonomous exploration of complex scenes by the biomimetic robotic ***,the swimming ability of the robotic manta is verified by field tests.

关键词： Biomimetic robotic manta Central Pattern Generator Closed-loop control Backward swimming

基于时频混合域局部统计的帕金森病语音障碍分析方法研究

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

生物医学工程学杂志 2021年第1期38卷 21-29页

作者：张涛蒋培培张亚娟曹玉阳燕山大学信息科学与工程学院河北秦皇岛066004 燕山大学河北省信息传输与信号处理重点实验室河北秦皇岛066004

针对帕金森病语音检测问题,本文提出了一种基于时频混合域局部统计的帕金森病语音障碍分析方法。该方法首先将语音信号从时域转化为时频混合域,即进行时频化表示。在时频化表示方法中将语音信号进行分帧处理,再将每帧的语音进行傅里叶变... 详细信息

针对帕金森病语音检测问题,本文提出了一种基于时频混合域局部统计的帕金森病语音障碍分析方法。该方法首先将语音信号从时域转化为时频混合域,即进行时频化表示。在时频化表示方法中将语音信号进行分帧处理,再将每帧的语音进行傅里叶变换,通过计算得到能量谱,并将能量谱通过映射关系映射到图像空间进行可视化;其次统计信号每个能量数据在时间轴上和频率轴上的差分值,根据差分值计算该能量的梯度统计特征,用梯度统计特征来表示其不同时域与频域的能量值的突变情况;最后利用KNN分类器对提取的梯度统计特征进行分类。本文在不同的帕金森病语音数据集上进行实验,发现本文所提取的梯度统计特征在分类时有更强的聚类性。与基于传统特征与深度学习特征的分类结果相比,本文所提取的梯度统计特征在分类准确率、特异性和灵敏性上均优于前二者。实验证明了本文所提出的梯度统计特征在帕金森病语音分类诊断中的可行性。

关键词：帕金森病语音障碍时频混合域局部统计梯度统计特征

Multi-scenario land use prediction and layout optimization in Nanjing Metropolitan Area based on the PLUS model

在线全文

学校读者我要写书评

暂无评论

Journal of Geographical Sciences 2024年第7期34卷 1415-1436页

作者： cao Ji cao Weidong cao Yuhong WANG Xuewei ZHANG Yizhen MA Jinji School of Geography and Tourism Anhui Normal UniversityWuhuAnhui241002China School of Ecology and Environment Anhui Normal UniversityWuhuAnhui241002China

The metropolitan area is a crucial spatial element in promoting new urbanization in *** possesses theoretical and empirical value in the determination of the evolutionary patterns and development trends necessary for regional integration and high-quality *** study focused on Nanjing Metropolitan Area,the first national metropolitan area in China,and established three development scenarios by combining ecological–economic spatial conflict(EESC)zones and national key ecological functional *** scenarios simulate the spatial distribution of future land use and land cover change(LUCC)using the development zone planning function of the patch generation land use simulation(PLUS)*** results show that:(1)Between 2000 and 2020,the most prominent characteristics of land use change were largely the massive expansion of built-up land and the significant decline of farmland,while changes in the area of ecological land were less evident.(2)EESC areas experienced significant changes over the past 20 years,but the overall level of conflict was *** land was the main land use type in the lowest-conflict area,while built-up land was the main land use type in the highest-conflict area.(3)From 2030 to 2050,further expansion of built-up areas is expected,with continued decrease of *** regulation of these land use changes can be achieved through different development zone *** economic development scenario had the largest built-up land area,while the ecological protection scenario had the largest farmland *** study simulates the spatial pattern changes in the metropolitan area based on spatial conflict patterns and national main functional area planning process,providing a scientific reference for future spatial planning and management.

关键词： land use change spatial conflict patch-generating simulation land use prediction Nanjing Metropolitan Area

Making the Complicated Simple:A Minimizing Carrier Strategy on Innovative Nanopesticides

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第10期16卷 31-46页

作者： Wenjie Shangguan Qiliang Huang Huiping Chen Yingying Zheng Pengyue Zhao Chong cao Manli Yu Yongsong cao Lidong cao State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193People's Republic of China College of Plant Protection China Agricultural UniversityBeijing 100193People's Republic of China State Key Laboratory of Element-Organic Chemistry Department of Chemical BiologyCollege of ChemistryNankai UniversityTianjin 300071People's Republic of China

The flourishing progress in nanotechnology offers boundless opportunities for agriculture,particularly in the realm of nanopesticides research and ***,concerns have been raised regarding the human and environmental safety issues stemming from the unrestrained use of non-therapeutic nanomaterials in *** is also important to consider whether the current development strategy of nanopesticides based on nanocarriers can strike a balance between investment and return,and if the complex material composition genuinely improves the efficiency,safety,and circularity of ***,we introduced the concept of nanopesticides with minimizing carriers(NMC)prepared through prodrug design and molecular self-assembly emerging as practical tools to address the current limitations,and compared it with nanopesticides employing non-therapeutic nanomaterials as carriers(NNC).We further summarized the current development strategy of NMC and examined potential challenges in its preparation,performance,and ***,we asserted that the development of NMC systems can serve as the innovative driving force catalyzing a green and efficient revolution in nanopesticides,offering a way out of the current predicament.

关键词： Nanopesticides Green agrochemicals Self-assembly Nanomaterial safety Sustainable development strategies

在线全文

学校读者我要写书评

暂无评论

中国数字金融发展与经济增长的理论与实证

数量经济技术经济研究 2020年第6期37卷 26-46页

作者：钱海章陶云清曹松威曹雨阳国信证券博士后工作站中南财经政法大学金融学院华中师范大学经济与工商管理学院

研究目标:在数字经济背景下,基于中国数字金融发展的特征事实,分析数字金融发展对经济增长的影响。研究方法:基于2011~2018年31个省份的面板数据,运用面板数据计量模型、中介效应模型、工具变量法、双重差分法进行实证检验。研究发现:... 详细信息

研究目标:在数字经济背景下,基于中国数字金融发展的特征事实,分析数字金融发展对经济增长的影响。研究方法:基于2011~2018年31个省份的面板数据,运用面板数据计量模型、中介效应模型、工具变量法、双重差分法进行实证检验。研究发现:中国数字金融发展促进了经济增长,为了控制内生性,以1984年各省份固定电话数与人均邮电业务量作为工具变量,结论一致;将央行推出的《G20数字普惠金融高级原则》作为准自然实验,采用双重差分法发现数字金融发展显著促进了经济增长;在城镇化率低和物质资本高的省份中,数字金融发展对经济增长的积极作用进一步增强;进一步分析发现数字金融发展促进了技术创新与地区创业,并进而推动了经济增长,即存在数字金融发展促进经济增长的创新和创业渠道。研究创新:使用工具变量、准自然实验的方法,缓解了内生性问题;使用中介效应模型,揭开了数字金融发展影响实体经济的可能机制。研究价值:对制定“数字中国”战略、理解金融供给侧结构性改革和出台创新创业政策促进实体经济发展提供了有益思考。

关键词：数字金融发展经济增长数字中国金融供给侧结构性改革

公共交通公示语汉英翻译研究——以公共交通场所为例

在线全文

学校读者我要写书评

暂无评论

对外经贸 2023年第7期 156-160页

作者：曹雨阳聊城大学山东聊城252000

公共交通公示语指各主要交通枢纽内的交通标牌、交通安全标语、服务性信息、提示性信息、禁止类信息等。公共交通领域汉英双语公示语服务环境建设水平在检验城市国际化程度方面发挥着日益重要的作用。公共交通公示语在英文译写过程中应... 详细信息

公共交通公示语指各主要交通枢纽内的交通标牌、交通安全标语、服务性信息、提示性信息、禁止类信息等。公共交通领域汉英双语公示语服务环境建设水平在检验城市国际化程度方面发挥着日益重要的作用。公共交通公示语在英文译写过程中应注意词语、语法、翻译、译文方面存在的问题,改进、提升公共交通公示语的英译质量,提升城市形象,提高城市国际化水平。

关键词：公共交通公示语汉英翻译公共交通场所

在线全文

学校读者我要写书评

暂无评论

谈山区高速生态环保设计

山西建筑 2018年第14期44卷 193-194页

作者：曹宇扬广东省交通规划设计研究院股份有限公司广东广州510635

随着公路建设的高速发展,公路建设带来的生态破坏和环境污染问题日益显现出来,综合分析了山区高速勘察设计的过程,探究高速公路设计过程中可推广采用的有益于公路绿化、生态环保的措施,以达到"绿色公路,品质工程"的目的。

关键词：山区高速绿化设计环保绿色公路