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基于DREAM算法的DSGE模型参数估计精度研究
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作者 罗琦 赵胜民 《统计与决策》 CSSCI 北大核心 2024年第2期46-51,共6页
文章将人工智能算法中的DREAM算法首次应用到动态随机一般均衡模型的参数估计中,并以动态随机一般均衡模型LS(2005)为例对该算法的估计精度进行了系统分析,研究结果表明:根据待估参数随机抽样序列的箱线图来看,由DREAM算法产生的待估参... 文章将人工智能算法中的DREAM算法首次应用到动态随机一般均衡模型的参数估计中,并以动态随机一般均衡模型LS(2005)为例对该算法的估计精度进行了系统分析,研究结果表明:根据待估参数随机抽样序列的箱线图来看,由DREAM算法产生的待估参数随机抽样序列的箱体长度均比RWMH和IMH算法产生的箱体长度要长,说明由DREAM算法产生的参数估计序列的分散程度比RWMH和IMH算法要大,表明了DREAM算法遍历参数空间范围更为广泛,算法逃逸局部最优值的能力更强。另外,从箱线图中的中位数数值来看,除了5个参数以外,由DREAM算法产生的参数估计序列的中位数相比RWMH和IMH算法,与真实数据生成过程更为接近,说明由DREAM算法产生的参数估计值大部分都集中在参数的真值附近。由于DREAM算法依据IQR统计方法除去无用链,故由DREAM算法产生的参数估计序列的异常值也明显降低,而RWMH算法产生的参数估计序列的异常值尤其多。从待估参数的90%最大后验密度可信区间来看,DREAM算法产生的待估参数90%最大后验密度可信区间除了3个参数以外,其余全部包含了真值,而传统的RWMH和IMH算法分别只有7个和1个区间包含了真值,表明DREAM算法的估计不确定性远小于传统的RWMH和IMH算法。最后,根据待估参数的无效因子来看,DREAM算法产生的待估参数序列与传统的RWMH和IMH算法相比,其相关性更弱,即无效因子数值更小,这一点进一步验证了DREAM算法遍历整个参数空间的能力更强。 展开更多
关键词 dream算法 DSGE模型 估计精度
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My Dreams
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作者 沈一丁 张超(指导) 《中学生英语》 2023年第27期7-7,共1页
I have a pen friend in America.We often send e-mails to each other.While talking about the future,I tell him that I have two dreams.The first one is to be a reporter.If the Olympic Games or the Asian Games are held in... I have a pen friend in America.We often send e-mails to each other.While talking about the future,I tell him that I have two dreams.The first one is to be a reporter.If the Olympic Games or the Asian Games are held in my country again,I will report news about it in English.The second dream is to buy a new car. 展开更多
关键词 dreams dream AMERICA
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CHOGTSO:SMALL GRAPES,BIG DREAMS
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作者 Liang Xia(文/图) 《China's Tibet》 2023年第6期52-54,共3页
The hot summer ends and Autumn begins.Theonce colorful grapesturn redone byoneas theautumnwindblows through Damedyong Vineyard in Chamdo,Xizang Autonomous Region.
关键词 SUMMER dream GRAPES
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Higher Grain-Filling Rate in Inferior Spikelets of Tolerant Rice Genotype Offset Grain Yield Loss under Post-Anthesis High Night Temperatures
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作者 Nitin SHARMA Bhupinder SINGH +6 位作者 Subbaiyan Gopala KRISHNAN Haritha BOLLINEDI Pranab Kumar MANDAL Milan Kumar LAL Prakash Kumar JHA P.V.Vara PRASAD Anjali ANAND 《Rice science》 SCIE CSCD 2024年第5期572-586,I0059-I0061,共18页
Increased nighttime respiratory losses decrease the amount of photoassimilates available for plant growth and yield. We hypothesized that the increased respiratory carbon loss under high night temperatures(HNT) could ... Increased nighttime respiratory losses decrease the amount of photoassimilates available for plant growth and yield. We hypothesized that the increased respiratory carbon loss under high night temperatures(HNT) could be compensated for by increased photosynthesis during the day following HNT exposure. Two rice genotypes, Vandana(HNT-sensitive) and Nagina 22(HNT-tolerant), were exposed to HNT(4 ℃ above the control) from flowering to physiological maturity. They were assessed for alterations in the carbon balance of the source(flag leaf) and its subsequent impact on grain filling dynamics and the quality of spatially differentiated sinks(superior and inferior spikelets). Both genotypes exhibited significantly higher night respiration rates. However, only Nagina 22 compensated for the high respiration rates with an increased photosynthetic rate, resulting in a steady production of total dry matter under HNT. Nagina 22 also recorded a higher grain-filling rate, particularly at 5 and 10 d after flowering, with 1.5- and 4.0-fold increases in the translocation of ^(14)C sugars to the superior and inferior spikelets, respectively. The ratio of photosynthetic rate to respiratory rate on a leaf area basis was negatively correlated with spikelet sterility, resulting in a higher filled spikelet number and grain weight per plant, particularly for inferior grains in Nagina 22. Grain quality parameters such as head rice recovery, high-density grains, and gelatinization temperature were maintained in Nagina 22. An increase in the rheological properties of rice flour starch in Nagina 22 under HNT indicated the stability of starch and its ability to reorganize during the cooling process of product formation. Thus, our study showed that sink adjustments between superior and inferior spikelets favored the growth of inferior spikelets, which helped to offset the reduction in grain weight under HNT in the tolerant genotype Nagina 22. 展开更多
关键词 high night temperature inferior grain pasting property radiolabeled sugar superior grain
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ED-Ged:Nighttime Image Semantic Segmentation Based on Enhanced Detail and Bidirectional Guidance
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作者 Xiaoli Yuan Jianxun Zhang +1 位作者 Xuejie Wang Zhuhong Chu 《Computers, Materials & Continua》 SCIE EI 2024年第8期2443-2462,共20页
Semantic segmentation of driving scene images is crucial for autonomous driving.While deep learning technology has significantly improved daytime image semantic segmentation,nighttime images pose challenges due to fac... Semantic segmentation of driving scene images is crucial for autonomous driving.While deep learning technology has significantly improved daytime image semantic segmentation,nighttime images pose challenges due to factors like poor lighting and overexposure,making it difficult to recognize small objects.To address this,we propose an Image Adaptive Enhancement(IAEN)module comprising a parameter predictor(Edip),multiple image processing filters(Mdif),and a Detail Processing Module(DPM).Edip combines image processing filters to predict parameters like exposure and hue,optimizing image quality.We adopt a novel image encoder to enhance parameter prediction accuracy by enabling Edip to handle features at different scales.DPM strengthens overlooked image details,extending the IAEN module’s functionality.After the segmentation network,we integrate a Depth Guided Filter(DGF)to refine segmentation outputs.The entire network is trained end-to-end,with segmentation results guiding parameter prediction optimization,promoting self-learning and network improvement.This lightweight and efficient network architecture is particularly suitable for addressing challenges in nighttime image segmentation.Extensive experiments validate significant performance improvements of our approach on the ACDC-night and Nightcity datasets. 展开更多
关键词 night driving semantic segmentation nighttime image processing adverse illumination differentiable filters
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Translation Studies from a Cross-Cultural Perspective:Reinventing Subjectivity-A Case Study of English Translation of A Dream of Red Mansions
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作者 YANG Yin-chuan YANG Zhan 《Journal of Literature and Art Studies》 2024年第4期279-283,共5页
The integration of cross-cultural inquiries into the realm of translation has given rise to a distinct subfield known as cross-cultural translation studies.This approach emphasizes the importance of delving into the c... The integration of cross-cultural inquiries into the realm of translation has given rise to a distinct subfield known as cross-cultural translation studies.This approach emphasizes the importance of delving into the cultural subtleties and the awareness of cultural subjectivity within the translation process.Central to this framework is the concept of reshaping cultural nuances and the subjectivity of culture.This paper introduces three principal translation strategies that emerge from a cross-cultural standpoint:the alienation translation strategy,the‘cannibalism’translation strategy,and the destructive translation strategy.Utilizing the English translation of“Dream of the Red Chamber”as a case study,the paper examines how cultural nuances and cultural subjectivity influence the selection of translation strategies and demonstrates the practical application of cross-cultural research within the translation sphere.Hence,the significance of cross-cultural translation studies lies in its capacity to offer a novel lens through which to view translation studies.It encourages a reevaluation of cultural nuances and subjectivity in translation,which is of profound practical importance for advancing the field of translation studies,enhancing cross-cultural communication,and facilitating the spread of Chinese discourse on the global stage. 展开更多
关键词 CROSS-CULTURAL translation strategies A dream of Red Mansions
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The Application of Embodied Cognitive Linguistics in the English Translation of Two-Part Allegorical Saying—An Analysis of Examples From A Dream of Red Mansions
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作者 HE Jiamei ZOU Jianling 《Sino-US English Teaching》 2024年第7期337-342,共6页
As a kind of widely circulated folk language,two-part allegorical saying(“xiehouyu”)carries the wisdom of the Chinese people and is characterized with humor and vivid imagery.Taking the two English translation versi... As a kind of widely circulated folk language,two-part allegorical saying(“xiehouyu”)carries the wisdom of the Chinese people and is characterized with humor and vivid imagery.Taking the two English translation versions of A Dream of Red Mansions as examples,this paper analyzes the English translation of two-part allegorical saying based on the core principle of Embodied Cognitive Linguistics(ECL),“Reality-Cognition-Language”,and explores how the English translation of two-part allegorical saying reflects the three dimensions of ECL. 展开更多
关键词 two-part allegorical saying A dream in Red Mansions Embodied Cognitive Linguistics TRANSLATION
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Living the Mechanical Dream
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作者 KEDIR ABDUREZAK NURIYE 《ChinAfrica》 2024年第3期56-56,共1页
Studying in China is not just about academics,it is also about connecting with communities and learning local culture.As a child,I was captivated by machines and their inner workings.I yearned to design contraptions t... Studying in China is not just about academics,it is also about connecting with communities and learning local culture.As a child,I was captivated by machines and their inner workings.I yearned to design contraptions that could solve real-world problems and improve people’s lives.So,when it came time to choose a university,I knew that mechanical engineering was the path for me. 展开更多
关键词 earned connecting dream
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High-quality Development of the Pearl River Night Tour in the Context of Deep Integration of Culture and Tourism
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作者 Juan JIANG Lianrong PANG 《Meteorological and Environmental Research》 2024年第1期38-45,共8页
Urban night tourism is a new form of urban tourism development and an important driving force for the prosperity of urban night economy.As the most prestigious business card among many night tour projects in Guangzhou... Urban night tourism is a new form of urban tourism development and an important driving force for the prosperity of urban night economy.As the most prestigious business card among many night tour projects in Guangzhou,the Pearl River water night tour has contributed to the development of Guangzhou s night economy,which cannot be underestimated.However,in the process of rapid development,there are also problems such as diversified operators,insufficient integration of intangible cultural elements,excessive commercial attributes,issues of tourism facilities and service facilities.Under the new stage of integrated development of culture and tourism,how to use mutual promotion of culture and tourism in the Pearl River night tour to seek innovative paths for high-quality development in the future is the main problem expected to be solved in this paper.Therefore,based on the perspective of culture and tourism integration,this paper analyzes the general situation and development status of the Pearl River night tour,and proposes five development strategies:the overall planning of culture and tourism integration,the deep integration of intangible cultural elements,the balance of commercial attributes and tourism attributes,the high integration of culture,business,tourism and education,and the creation of tourism atmosphere,in order to provide inspiration for the healthy,orderly and high-quality development of the Pearl River night tour. 展开更多
关键词 Integration of culture and tourism The Pearl River night tour High-quality development Intangible cultural elements
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Fascination For Planes Young Ghanaian pursues her aviation dream in China
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作者 GE LIJUN 《ChinAfrica》 2024年第5期54-55,共2页
Every morning at 7 o’clock,Rachael Amoah,a young woman from Ghana,prepares for a new day of challenges and innovations at a leading aerospace company in Shanghai’s Pudong New Area.In March last year,she completed he... Every morning at 7 o’clock,Rachael Amoah,a young woman from Ghana,prepares for a new day of challenges and innovations at a leading aerospace company in Shanghai’s Pudong New Area.In March last year,she completed her studies in the School of Aeronautics and Astronautics at Shanghai Jiao Tong University(SJTU),and fulfilled her ambition to work in this megalopolis. 展开更多
关键词 AVIATION dream pursue
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Strategies for Applying LED Lights in Night Space Lighting for Bridges
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作者 Yingling Dai Qinghua Zhao 《Journal of World Architecture》 2024年第3期57-62,共6页
LED lights have been widely used in urban night space lighting in recent years as they are small,energy-saving,and efficient.This article explores the use of LEDs in bridge night space lighting and their application s... LED lights have been widely used in urban night space lighting in recent years as they are small,energy-saving,and efficient.This article explores the use of LEDs in bridge night space lighting and their application strategies.The aim is to offer valuable insights and references for urban planners and bridge lighting designers in China.By advancing the application of LED technology in bridge night lighting,the goal is to enhance the city’s nighttime ambiance,making the bridge an iconic landmark and a defining feature of the city. 展开更多
关键词 Bridge night space lighting LED application Color band and gradient Artistic value Online publication:July 11 2024
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基于Speed Dreams的驾驶员应激响应分析系统
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作者 吴初娜 田学英 +1 位作者 徐云杰 于鹏程 《计算机工程与设计》 CSCD 北大核心 2012年第6期2511-2515,共5页
为了研究应激状态下的驾驶员行为,提出了一种驾驶员应激响应分析系统。硬件系统以罗技赛车方向盘为基础并进行相应的机械改造,软件系统采用Speed Dreams引擎创建典型应激场景;采用Joystick监控方法以及多线程通讯技术,高速动态采集并记... 为了研究应激状态下的驾驶员行为,提出了一种驾驶员应激响应分析系统。硬件系统以罗技赛车方向盘为基础并进行相应的机械改造,软件系统采用Speed Dreams引擎创建典型应激场景;采用Joystick监控方法以及多线程通讯技术,高速动态采集并记录驾驶行为。对采集数据进行滤波、去噪、微分等处理和分析后,得出驾驶员的应激响应时间及数据间的相关规律。该研究成果可以为应激状态下的驾驶员行为研究提供可靠的数据支持。 展开更多
关键词 应激响应分析 SPEED dreams引擎 Joystick监控 多线程通讯 驾驶行为
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面向高阶思维培育的DREAM教学模式及应用 被引量:1
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作者 刘涛 黄媛 +1 位作者 蒋燕妮 李轲 《空天预警研究学报》 CSCD 2023年第5期384-386,390,共4页
高阶思维是高阶能力的核心,集中体现了智能时代对人才素质的新要求.针对雷达系统课程中学员高阶思维培育难的问题,围绕“相关”或者“关联”这一高阶思维核心特征,提出了问题驱动的DREAM教学模式,给出了DREAM模式的实施过程.课堂实践表... 高阶思维是高阶能力的核心,集中体现了智能时代对人才素质的新要求.针对雷达系统课程中学员高阶思维培育难的问题,围绕“相关”或者“关联”这一高阶思维核心特征,提出了问题驱动的DREAM教学模式,给出了DREAM模式的实施过程.课堂实践表明,该模式能够有效提升学员的高阶思维能力. 展开更多
关键词 高阶思维 dream教学模式 雷达系统课程
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基于Dream Logic的CPU仿真设计与实践
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作者 李珍香 王家亮 《计算机教育》 2023年第9期192-200,共9页
针对计算机组成原理课程中的重要实验内容“CPU设计”中存在的一些难点问题,提出引入Dream Logic仿真工具,通过CPU总体设计及CPU整机模型机中的运算器设计、指令系统设计与微指令设计示例,阐述基于Dream Logic的硬件基本部件仿真设计和... 针对计算机组成原理课程中的重要实验内容“CPU设计”中存在的一些难点问题,提出引入Dream Logic仿真工具,通过CPU总体设计及CPU整机模型机中的运算器设计、指令系统设计与微指令设计示例,阐述基于Dream Logic的硬件基本部件仿真设计和软件设计方法,并结合MOV、ADD等汇编指令及计算机组成原理实验中的寄存器和算术运算实验,介绍对CPU模型机进行的实验测试,最后说明教学实践效果。 展开更多
关键词 CPU设计 dream Logic CPU仿真 计算机组成原理
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让英语课堂绽开思维之花——以六年级下册Unit8 Our dreams教学为例谈学生思维品质的培养 被引量:3
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作者 殷燕 《小学教学研究》 2016年第7期61-63,共3页
思维是人类认识世界、改造世界最重要的主观来源,恩格斯把它比作"地球上最美的花朵"。思维能力是学习能力的核心。我们的教学活动不只是传授知识,更重要的是引导学生自主思考,培养其主动思维的能力。教育家苏霍姆林斯基说:"学生来... 思维是人类认识世界、改造世界最重要的主观来源,恩格斯把它比作"地球上最美的花朵"。思维能力是学习能力的核心。我们的教学活动不只是传授知识,更重要的是引导学生自主思考,培养其主动思维的能力。教育家苏霍姆林斯基说:"学生来到学校里,不仅是为了取得一份知识的行囊,更重要的是为了变得聪明。"《义务教育英语课程标准》(2011年版)在课程基本理念中提出"语言既是交际的工具, 展开更多
关键词 思维能力培养 课程基本理念 dreams 学习能力 自主学习 新单词 学习过程 语言输出 开放性问题 创造性思维
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A Brief Stylistic Analysis of “Chinese Dreams and American Dreams” Delivered by Bai Yansong
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作者 王丹 《海外英语》 2013年第3X期285-286,共2页
On March 3nd.2009,Chinese famous host Mr.Bai Yansong,a journalist,gave a speech at Yale University.This speech lasted forty minutes.The speech mainly talked about the changes between China and America through over the... On March 3nd.2009,Chinese famous host Mr.Bai Yansong,a journalist,gave a speech at Yale University.This speech lasted forty minutes.The speech mainly talked about the changes between China and America through over the last thirty years,and mainly focuses on the author's 40 years experiences and his understanding of Chinese dreams according to his own experiences.The audience,most students from Yale,were impressed a lot by his humorous speaking style.Therefore,it deserves our exploration to exhibit what the stylistic characteristics of speech are.The examination will be carried out in five perspectives,namely,phonological,graphological,lexical,syntactical and semantics analyses. 展开更多
关键词 SPEECH Chinese dreams AMERICAN dreams FEATURES
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Analysing Shakespeare's Emblem Language in Midsummer Night's Dream
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作者 Erdal AYAN 《Journal of Literature and Art Studies》 2017年第10期1264-1278,共15页
Shakespeare has been studied from many perspectives so far. However, his language style used in his literary works is still worth studying. First of all, this study explores changing sense of emblem and emblem languag... Shakespeare has been studied from many perspectives so far. However, his language style used in his literary works is still worth studying. First of all, this study explores changing sense of emblem and emblem language comparing Shakespeare's era and today. Secondly, it puts stress on the effects of emblem traditions on Shakespeare. Lastly, this article aims to shed light on his emblematical language in his Midsummer Night's Dream, which is one of his most leading works in terms of having highly visible emblematical interpretations. 展开更多
关键词 SHAKESPEARE emblems emblem language Midsummer night's dream
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Shouldering responsibilities & chasing dreams
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作者 张来斌 《Petroleum Science》 SCIE CAS CSCD 2013年第4期431-431,共1页
This special issue of Petroleum Science celebrates not only the 60th anniversary of China University of Petroleum(CUP),but also the 60th anniversary of China’s higher education and scientific research in petroleum ... This special issue of Petroleum Science celebrates not only the 60th anniversary of China University of Petroleum(CUP),but also the 60th anniversary of China’s higher education and scientific research in petroleum science.As the first petroleum university in the People’s Republic of China,CUP played the major role in the development of the country’s petroleum higher education from a humble start to its successes today. 展开更多
关键词 Shouldering responsibilities chasing dreams OVER
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Faith and Meaning:A Study of the Chinese Translation of Shakespeare’s Midsummer Night’s Dream by Liang Shiqiu from the Perspective of Topology
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作者 YANG Fei-ran 《Journal of Literature and Art Studies》 2022年第9期882-890,共9页
Topology,as a branch of mathematics,studies on the invariability of topological spaces after topological transformation,whose essence is topological equivalence.From the perspective of cultural inheritance and coheren... Topology,as a branch of mathematics,studies on the invariability of topological spaces after topological transformation,whose essence is topological equivalence.From the perspective of cultural inheritance and coherence,translation is essentially topological deformation.In literary translation,complete equivalence is almost impossible.Topological equivalence can be used to transform the text dynamically,which means that the translation remains the fundamental properties of the original text.Therefore,people can understand the meaning of the text based on another culture from different cultural backgrounds.From the view point of topology,the present paper purports to examine Liang Shiqiu’s translation of Shakespeare’s Midsummer Night’s Dream,and found that the translation remains the features of source text by rendering effective topological strategies to realize topological equivalence and promote cultural exchanges between China and the West. 展开更多
关键词 FAITH MEANING SHAKESPEARE A Midsummer night’s dream Liang Shiqiu TOPOLOGY
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A Comparative Study of A Midsummer Night's Dream and The Tempest
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作者 康杰 《海外英语》 2017年第4期156-158,共3页
Despite that A Midsummer Night's Dreamand The Tempest were written at almost the beginning and the closing of Shakespeare's career respectively, they demonstrate a surprising similarity in so many ways. This a... Despite that A Midsummer Night's Dreamand The Tempest were written at almost the beginning and the closing of Shakespeare's career respectively, they demonstrate a surprising similarity in so many ways. This article intends to compare and analyze the two plays in terms of their similarities in technique, structure, characters as well as the application of a Chain of Beings. 展开更多
关键词 SHAKESPEARE SIMILARITY A Midsummer night’s dream The Tempest
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