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An assessment of the CMIP6 performance in simulating Arctic sea ice volume flux via Fram Strait

Advances in Climate Change Research 2024年第4期15卷 584-595页

作者： Hui-Yan KUANG Shao-zhe SUN Yu-Fang YE Shao-yin WANG Hai-Bo BI Zhuo-Qi CHEN Xiao CHENG School of Geospatial Engineering and Science Sun Yat-sen UniversitySouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Key Laboratory of Comprehensive Observation of Polar Environment(Sun Yat-sen University) Ministry of EducationZhuhai 519082China CAS Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of Sciences(CAS)Qingdao 266071China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology Qingdao 266237China

Numerical models serve as an essential tool to investigate the causes and effects of Arctic sea ice *** the simulation capabilities of the most recent CMIP6 models in sea ice volume flux provides references for model applications and ***,reliable long-term simulation results of the ice volume fux contribute to a deeper understanding of the sea ice response to global climate *** this study,the sea ice volume flux through six Arctic gateways over the past four decades(1979-2014)were estimated in combination of satellite observations of sea ice concentration(SIC)and sea ice motion(SIM)as well as the Pan-Arctic Ice-Ocean Modeling and Assimilation System(PIOMAS)reanalysis sea ice thickness(SIT)*** simulation capability of 17 CMIP6 historical models for the volume flux through Fram Strait were quantitatively *** ice volume flux simulated from the ensemble mean of 17 CMIP6 models demonstrates better performance than that from the individual model,yet IPSL-CM6A-LR and EC-Earth3-Veg-LR outperform the ensemble mean in the annual volume flux,with Taylor scores of 0.86 and 0.50,***6 models display relatively robust capability in simulating the seasonal variations of volume *** them,CESM2-WACCM performs the best,with a correlation coefficient of 0.96 and a Taylor score of ***,NESM3 demonstrates the largest devi-ation from the observation/reanalysis data,with the lowest Taylor score of *** variability of sea ice volume flux is primarily influenced by SIM and SIT,followed by *** extreme large sea ice export through Fram Strait is linked to the occurrence of anomalously low air temperatures,which in turn promote increased SIC and SIT in the corresponding ***,the intensified activity of Arctic cyclones and Arctic dipole anomaly could boost the southward sea ice velocity through Fram Strait,which further enhance the sea ice outflow.

关键词： Sea ice volume flux CMIP6 models Fram Strait Attribution analysis

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Based on Synaptic Pathology to Explore the Intervention of Qing Nao Tong Luo Recipe on Rats with Alzheimer’s Disease

Based on Synaptic Pathology to Explore the Intervention of Q...

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第十四届全国中药和天然药物学术研讨会

作者： Zi-Jun Hou yin-zhe Gui Jing-Bo Sun Guangdong Provincial Hospital of Traditional Chinese Medicine

＜正＞Object To observe the effects of Qing Nao Tong Luo Recipe（QNTL recipe）on learning and memory impairment in rats with AD（Alzheimer’s disease）and its effect on hippocampal synaptic *** Rats were subjected to ...

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Impact of water table on hierarchically nested groundwater flow system

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Journal of Groundwater Science and Engineering 2024年第2期12卷 119-131页

作者： Jun Zhang Rong-zhe Hou Kun Yu Jia-qiu Dong Li-he yin Key Laboratory of Groundwater and Ecology in Arid and Semi-arid Areas Xi'an Center of Geological SurveyChina Geological SurveyXi'an 710054China

Water table configuration gives rise to hierarchically nested groundwater flow ***,there remains a lack of comprehensive understanding regarding the controlling factors of water table and its impact on flow ***,it remains challenging to identify characteristics of water table space variation through limited groundwater observations at the regional *** on two ideal two-dimensional cross-section analytical models,this study presents a simplified approach to preliminarily assess the nonlinear interactions between water table variation and three driving factors:Topography,geol-ogy and *** criteria,C1 and C2,are utilized to address issues at different scales ranging from basin to local:(i)the influence of various factors on water table configuration;and(ii)the influence of water table on groundwater flow ***,the Ordos Plateau is taken as an example to explore the role of the water table in nested groundwater systems using the provided approach and *** applica-tion of this approach in the Ordos Plateau demonstrates its appropriateness as a practical method for prelim-inarily determining the characteristics of water table configuration and its impact on flow *** study explores the mechanism influencing spatial variation in the water table and improves understanding of the interaction between topography,geology,and climate on groundwater flow patterns.

关键词： Water table configuration Groundwater flow pattern Analytical models Top boundary condi-tions Ordos Plateau

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云搜索优化算法

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计算机工程与科学 2011年第10期33卷 120-125页

作者：曹炬殷哲华中科技大学数学与统计学院湖北武汉430074

本文将云的生成、动态运动、降雨和再生成等自然现象与智能优化算法的思想融合,建立了一种新的智能优化算法-云搜索优化算法(CSO)。生成与移动的云可以弥漫于整个搜索空间,这使得新算法具有较强的全局搜索能力;收缩与扩张的云团在形态... 详细信息

本文将云的生成、动态运动、降雨和再生成等自然现象与智能优化算法的思想融合,建立了一种新的智能优化算法-云搜索优化算法(CSO)。生成与移动的云可以弥漫于整个搜索空间,这使得新算法具有较强的全局搜索能力;收缩与扩张的云团在形态上会有千奇百态的变化,这使得算法具有较强的局部搜索能力;降雨后产生新的云团可以保持云团的多样性,这也是使搜索避免陷入局优的有效手段。实验表明,基于这三点建立的新算法具有优异的性能,benchmark函数最优值的计算结果以及与已有智能优化算法的比较展现了新算法精确的、稳定的全局求解能力。

关键词：云搜索优化算法智能优化函数优化全局优化

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Cow-YOLO:Automatic cow mounting detection based on non-local CSPDarknet53 and multiscale neck

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 193-202页

作者： De Li Junhao Wang zhe Zhang Baisheng Dai Kaixuan Zhao Weizheng Shen Yanling yin Yang Li College of Electrical Engineering and Information Northeast Agricultural UniversityHarbin 150030China College of Agricultural Equipment Engineering Henan University of Science and TechnologyLuoyang 471023HenanChina College of Animal Sciences and Technology Northeast Agriculture UniversityHarbin 150030China Key Laboratory of Northeast Smart Agricultural Technology of Ministry of Agriculture and Rural Affairs Northeast Agricultural UniversityHarbin 150030China

Cows mounting behavior is a significant manifestation of estrus in *** timely detection of cows mounting behavior can make cows conceive in time,thereby improving milk production of cows and economic benefits of the *** methods of mounting behavior detection are difficult to achieve precise detection under occlusion and severe scale change environments and meet real-time ***,this study proposed a Cow-YOLO model to detect cows mounting *** meet the needs of real-time performance,YOLOv5s model is used as the baseline *** order to solve the problem of difficult detection of cows mounting behavior in an occluded environment,the CSPDarknet53 of YOLOv5s is replaced with Non-local CSPDarknet53,which enables the network to obtain global information and improves the model’s ability to detect the mounting ***,the neck of YOLOv5s is redesigned to Multiscale Neck,reinforcing the multi-scale feature fusion capability of model to solve difficulty detection under dramatic scale ***,to further increase the detection accuracy,the Coordinate Attention Head is integrated into ***,these improvements form a novel cow mounting detection model called Cow-YOLO and make Cow-YOLO more suitable for cows mounting behavior detection in occluded and drastic scale changes ***-YOLO achieved a precision of 99.7%,a recall of 99.5%,a mean average precision of 99.5%,and a detection speed of 156.3 f/s on the test *** with existing detection methods of cows mounting behavior,Cow-YOLO achieved higher detection accuracy and faster detection speed in an occluded and drastic scale-change ***-YOLO can assist ranch breeders in achieving real-time monitoring of cows estrus,enhancing ranch economic efficiency.

关键词： cows mounting automatic detection Cow-YOLO computer vision CSPDarknet53 multiscale neck

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非线性抛物问题的对称修正有限体积元方法(英文)

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工程数学学报 2006年第3期23卷 530-536页

作者：尹哲芮洪兴山东大学数学与系统科学学院济南250100

本文对一类非线性抛物型方程提出对称修正有限体积元方法,给出能量模最优阶误差估计,并证明了对称修正有限体积元方法的解与一般有限体积元方法的解之差是一个更高阶项。

关键词：对称系数矩阵有限体积元误差估计全离散

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From kesterite 2D nanosheets to wurtzite 1D nanorods:controllable synthesis of Cu-Zn-Sn-S and their application in electrocatalytic hydrogen evolution

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Journal of Semiconductors 2023年第12期44卷 104-110页

作者： Yu Li Shuaibing Wang Jie Chen Ouyang Lin zhe yin Chunhe Yang Aiwei Tang Key Laboratory of Luminescence and Optical Information Ministry of EducationSchool of Physical Science and EngineeringBeijing Jiaotong UniversityBeijing 100044China

As typical quarternary copper-based chalcogenides,Cu–Zn–Sn–S nanocrystals(CZTS NCs)have emerged as a newfashioned electrocatalyst in hydrogen evolution reactions(HERs).Oleylamine(OM),a reducing surfactant and solvent,plays a significant role in the assisting synthesis of CZTS NCs due to the ligand ***,we adopted a facile one-pot colloidal method for achieving the structure evolution of CZTS NCs from 2D nanosheets to 1D nanorods assisted through the continuous addition of *** the process,the mechanism of OM-induced morphology evolution was further *** merely adding pure 1-dodecanethiol(DDT)as the solvent,the CZTS nanosheets were *** OM was gradually added to the reaction,the CZTS NCs began to grow along the sides of the nanosheets and gradually shrink at the top,followed by the formation of stable *** acidic electrolytic conditions,the CZTS NCs with 1.0 OM addition display the optimal HER activity with a low overpotential of 561 m V at 10 m A/cm^(2) and a small Tafel slope of 157.6 m V/dec compared with other CZTS *** enhancement of HER activity could be attributed to the contribution of the synergistic effect of the diverse crystal facets to the reaction.

关键词： 2D nanosheets 1D nanorods structure evolution Cu-Zn-Sn-S electrocatalytic hydrogen evolution

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带差商信息的云搜索优化算法及其收敛性分析

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计算机科学 2012年第1期39卷 252-255,267页

作者：殷哲曹炬华中科技大学数学与统计学院武汉430074

将云的生成、动态运动、降雨和再生成等自然现象与智能优化算法的思想融合,设计了一种新的智能优化算法——云搜索优化算法(Clouds Search Optimization Algorithm)。云团内部水滴可以产生差商信息来指导搜索,差商可以逼近梯度,且负差... 详细信息

将云的生成、动态运动、降雨和再生成等自然现象与智能优化算法的思想融合,设计了一种新的智能优化算法——云搜索优化算法(Clouds Search Optimization Algorithm)。云团内部水滴可以产生差商信息来指导搜索,差商可以逼近梯度,且负差商与负梯度同样为函数值下降方向。基于此,进一步提出带差商信息的云搜索优化算法(Clouds Search Optimization Algorithm with Difference Quotient Information)。依据差商与梯度的近似关系,证明了DCSO具有类似经典的基于梯度的优化算法的收敛性,最优水滴可以收敛到极值点。benchmark函数的数值实验表明,CSO与DCSO都具有很强的寻优能力,且差商信息可以指导水滴迅速向极值点移动,大大提高了DCSO的收敛速度。

关键词：云搜索优化算法智能优化函数优化差商信息梯度

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普朗克卫星：揭开宇宙深层次的秘密

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物理 2015年第3期44卷 137-151页

作者：马寅哲英国曼彻斯特大学物理和天文系Jodrell Bank天体物理中心英国M13 9PL

文章对宇宙微波背景辐射这一学科做了简单的介绍,并根据普朗克卫星2015年的主要宇宙学结果,重点阐述了测定宇宙学参数、测量引力透镜、测量B-模式极化及其与南极BICEP实验的关系、检验宇宙暴胀模型、检测暗能量模型,以及寻找"丢失的重... 详细信息

文章对宇宙微波背景辐射这一学科做了简单的介绍,并根据普朗克卫星2015年的主要宇宙学结果,重点阐述了测定宇宙学参数、测量引力透镜、测量B-模式极化及其与南极BICEP实验的关系、检验宇宙暴胀模型、检测暗能量模型,以及寻找"丢失的重子物质"等问题,并对观测宇宙学未来的发展进行了展望。

关键词：宇宙微波背景辐射大爆炸宇宙学引力波暴胀模型暗能量

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稳定分布噪声下基于粒子滤波的双站伪多普勒定位方法

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通信学报 2016年第1期37卷 28-34页

作者：邱天爽戚寅哲大连理工大学电子信息与电气工程学部辽宁大连116024

传统的伪多普勒测向算法在高信噪比和高斯噪声环境下能较为精确地计算出到达方位角,但对于稳定分布噪声的顽健性较差。针对以上不足,提出了一种基于粒子滤波的双站伪多普勒定位方法。用粒子滤波对2个接收机的来波方位角进行联合估计,并... 详细信息

传统的伪多普勒测向算法在高信噪比和高斯噪声环境下能较为精确地计算出到达方位角,但对于稳定分布噪声的顽健性较差。针对以上不足,提出了一种基于粒子滤波的双站伪多普勒定位方法。用粒子滤波对2个接收机的来波方位角进行联合估计,并通过非线性映射得到信源位置坐标估计,实现了方位角计算与双站定位的集成。仿真实验表明,当稳定分布参数α为1.4(中等脉冲程度)时,所提方法在低信噪比下的顽健性要显著优于传统方法,在高信噪比时估计精度与传统方法相当;当信噪比为10 d B时,所提方法在α<1.9的情况下定位精度远高于传统方法。

关键词：稳定分布噪声粒子滤波双站定位伪多普勒测向

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