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Diatom distribution in Holocene sediments from the northern West Caroline Basin (western equatorial Pacific) and their environmental significance SCIE
期刊论文 | 2023 , 10 | FRONTIERS IN MARINE SCIENCE
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Abstract :

Diatoms are an important component of submarine biogenic sediments and often used for carrying out palaeoceanographical reconstructions. To understand the relationship between diatoms and environment in the western equatorial Pacific, diatoms from the Holocene sediments in the northern West Caroline Basin were selected for analysis. We made quantitative statistics on diatoms and divided diatom assemblages through cluster analysis. A total of 53 species or varieties of diatoms belonging to 22 genera were identified. The range of diatom abundance was 0-88,373 valves/g. The diatoms found were mainly oceanic warm-water species. Overall, Azpeitia nodulifera was the species with the highest contribution, followed by Hemidiscus cuneiformis and Thalassiosira pacifica with these three species together accounting for approximately 80% in this area. We identified four diatom groupings and divided the study area into three regions. Diatom assemblage I in the West Caroline Basin was mainly affected by the North Equatorial Counter Current (NECC), Antarctic Intermediate Water (AAIW) and upwelling, and the supply of nutrients was relatively high. Assemblage II in the West Caroline Ridge was less influenced by currents, and thus had lower abundance and species diversity than assemblage I. The complex diatom assemblages in the Yap Trench were probably controlled by Upper Circumpolar Deep Water (UCPW) and Lower Circumpolar Deep Water (LCPW).

Keyword :

diatom diatom environmental significance environmental significance Holocene sediment Holocene sediment West Caroline Basin West Caroline Basin western equatorial Pacific western equatorial Pacific

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GB/T 7714 Chen, Min , Huang, Guobiao , Xu, Jishang et al. Diatom distribution in Holocene sediments from the northern West Caroline Basin (western equatorial Pacific) and their environmental significance [J]. | FRONTIERS IN MARINE SCIENCE , 2023 , 10 .
MLA Chen, Min et al. "Diatom distribution in Holocene sediments from the northern West Caroline Basin (western equatorial Pacific) and their environmental significance" . | FRONTIERS IN MARINE SCIENCE 10 (2023) .
APA Chen, Min , Huang, Guobiao , Xu, Jishang , Wang, Chengtao , Xu, Jizheng , Qi, Hongshuai et al. Diatom distribution in Holocene sediments from the northern West Caroline Basin (western equatorial Pacific) and their environmental significance . | FRONTIERS IN MARINE SCIENCE , 2023 , 10 .
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循环荷载作用下饱和土体的固结沉降探析
期刊论文 | 2018 , 70 (1) , 55-58,63 | 有色金属(矿山部分)
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Abstract :

交通荷载作用下滨海高水位饱和土层的沉降一直是长期关注的热点.基于轴对称Biot固结理论,针对循环荷载作用下轴对称饱和弹性地基的平面固结特性进行了分析.通过引入正弦波动荷载,计算得到轴对称饱和弹性地基的状态方程组,并采用Cayley-Hamilton数学方法以及Laplace变换和Hankel变换,对动荷载作用下饱和弹性土体的地表沉降和超孔隙水压力变化进行了求解.在此基础上,通过编制相应的求解程序并结合工程算例,对不同参数变化对地表沉降量和超孔隙水压力的影响规律进行了系统分析,结果表明,随着与荷载距离的增大,动荷载引起的地表沉降逐渐减小,相邻计算点的差异沉降及影响范围随着弹性模量的增大而减小,随渗透系数的增大而增大.研究结论可为滨海城市地铁工程的建设提供理论依据.

Keyword :

Biot固结理论 Biot固结理论 弹性地基 弹性地基 循环荷载 循环荷载 沉降 沉降 超孔隙水压力 超孔隙水压力

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GB/T 7714 陈敏 , 黄明 . 循环荷载作用下饱和土体的固结沉降探析 [J]. | 有色金属(矿山部分) , 2018 , 70 (1) : 55-58,63 .
MLA 陈敏 et al. "循环荷载作用下饱和土体的固结沉降探析" . | 有色金属(矿山部分) 70 . 1 (2018) : 55-58,63 .
APA 陈敏 , 黄明 . 循环荷载作用下饱和土体的固结沉降探析 . | 有色金属(矿山部分) , 2018 , 70 (1) , 55-58,63 .
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建筑废料现场分拣协调调度优化研究 CSCD CSSCI PKU
期刊论文 | 2016 , 25 (3) , 32-38 | 运筹与管理
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Abstract :

工程项目施工现场废料分拣的效率对施工进度具有重要的影响.通过分析现场废料分拣实施过程,建立了带有限中间缓冲的混合流水车间调度模型.提出了收集阶段作业排序的动态自适应算法和后续设备分配问题的考虑缓冲区的设备分配规则,在此基础上设计了废料分拣模型的启发式算法,平衡各分区工作量,进一步搜索最优解,并推导了问题的一个低界.实验结果表明,所提出算法能很好地对施工现场废料分拣问题进行求解,具有良好的收敛性和较高的时间效率.

Keyword :

动态自适应 动态自适应 带有限中间缓冲的混合流水车间 带有限中间缓冲的混合流水车间 建筑废料 建筑废料 现场分拣 现场分拣 调度 调度

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GB/T 7714 陈敏 . 建筑废料现场分拣协调调度优化研究 [J]. | 运筹与管理 , 2016 , 25 (3) : 32-38 .
MLA 陈敏 . "建筑废料现场分拣协调调度优化研究" . | 运筹与管理 25 . 3 (2016) : 32-38 .
APA 陈敏 . 建筑废料现场分拣协调调度优化研究 . | 运筹与管理 , 2016 , 25 (3) , 32-38 .
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伪忽视现象视觉对切任务和非视觉穿行任务研究
会议论文 | 2014 | 第十七届全国心理学学术会议
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Keyword :

交通偏向 交通偏向 伪忽视 伪忽视 对切判断 对切判断 注意左偏 注意左偏 穿行研究 穿行研究

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GB/T 7714 齐舒婷 , 郑新夷 , 陈敏 et al. 伪忽视现象视觉对切任务和非视觉穿行任务研究 [C] //第十七届全国心理学学术会议论文摘要集 . 2014 .
MLA 齐舒婷 et al. "伪忽视现象视觉对切任务和非视觉穿行任务研究" 第十七届全国心理学学术会议论文摘要集 . (2014) .
APA 齐舒婷 , 郑新夷 , 陈敏 , 尹若凡 , 雷雪美 . 伪忽视现象视觉对切任务和非视觉穿行任务研究 第十七届全国心理学学术会议论文摘要集 . (2014) .
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基于粗糙集核计算的遥感图像波段优选算法
期刊论文 | 2006 , 18 (4) , 378-380,384 | 宁德师专学报(自然科学版)
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Abstract :

针对遥感图像波段选择传统手工方法的不足,应用粗糙集理论,从纹理分析的多个角度选择特征,多方面挖掘数据的关键属性;通过核属性的方法计算达到简化决策表中的条件属性的目的,得到图像分类的关键波段和一些次关键波段;实现了波段的自动选择.该算法比传统方法更客观更简便,为遥感图像波段选择提供了崭新的方法.

Keyword :

优选波段 优选波段 差别矩阵 差别矩阵 核属性 核属性 粗糙集 粗糙集 遥感图像 遥感图像

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GB/T 7714 陈敏 . 基于粗糙集核计算的遥感图像波段优选算法 [J]. | 宁德师专学报(自然科学版) , 2006 , 18 (4) : 378-380,384 .
MLA 陈敏 . "基于粗糙集核计算的遥感图像波段优选算法" . | 宁德师专学报(自然科学版) 18 . 4 (2006) : 378-380,384 .
APA 陈敏 . 基于粗糙集核计算的遥感图像波段优选算法 . | 宁德师专学报(自然科学版) , 2006 , 18 (4) , 378-380,384 .
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