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Frequency-domain elastic full-waveform multiscale inversion method based on dual-level parallelism 认领 引用 被引量：4
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作者 李媛媛 李振春 +1 位作者 张凯 张旋 《Applied Geophysics》 SCIE CSCD 2015年第4期545-554,628,共10页
The complexity of an elastic wavefield increases the nonlinearity of inversion, To some extent, multiscale inversion decreases the nonlinearity of inversion and prevents it from falling into local extremes. A multisca... The complexity of an elastic wavefield increases the nonlinearity of inversion, To some extent, multiscale inversion decreases the nonlinearity of inversion and prevents it from falling into local extremes. A multiscale strategy based on the simultaneous use of frequency groups and layer stripping method based on damped wave field improves the stability of inversion. A dual-level parallel algorithm is then used to decrease the computational cost and improve practicability. The seismic wave modeling of a single frequency and inversion in a frequency group are computed in parallel by multiple nodes based on multifrontal massively parallel sparse direct solver and MPI. Numerical tests using an overthrust model show that the proposed inversion algorithm can effectively improve the stability and accuracy of inversion by selecting the appropriate inversion frequency and damping factor in low- frequency seismic data. 展开更多
关键词 Frequency-domain inversion multiscale frequency groups layer stripping dual-level parallelism
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VCSRA:A fast and accurate multiple sequence alignment algorithm with a high degree of parallelism 认领 引用
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作者 Dong Dong Wenhe Su +2 位作者 Wenqiang Shi Quan Zou Shaoliang Peng 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2018年第7期407-410,共4页
Multiple sequence alignment （MSA） is the alignment among more than two molecular biological sequences, which is a fundamental method to analyze evolutionary events such as mutations, insertions, deletions, and re-ar... Multiple sequence alignment （MSA） is the alignment among more than two molecular biological sequences, which is a fundamental method to analyze evolutionary events such as mutations, insertions, deletions, and re-arrangements. In theory, a dynamic programming algorithm can be employed to produce the optimal MSA. However, this leads to an explosive increase in computing time and memory consumption as the number of sequences increases （Taylor, 1990）. So far, MSA is still regarded as one of the most challenging problems in bioinformatics and computational biology （Chatzou et al., 2016）. 展开更多
关键词 VCSRA A fast and accurate multiple sequence alignment algorithm a high degree of parallelism
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浅谈ANTITHESIS与PARALLELISM 认领 引用 被引量：1
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作者 刘富研 《山东外语教学》 北大核心 1989年第2期47-51,共5页
英语不仅词汇丰富,而且在表达各种不同的思想、意念时有其独特的修辞方法。其中 antithesis 与 parallelism 是常用的两种修辞方法,在英诗和散文中尤为多见。要区别汉语中的“对偶”与“排比”这两个修辞格并不困难,因为它们之间有较为... 英语不仅词汇丰富,而且在表达各种不同的思想、意念时有其独特的修辞方法。其中 antithesis 与 parallelism 是常用的两种修辞方法,在英诗和散文中尤为多见。要区别汉语中的“对偶”与“排比”这两个修辞格并不困难,因为它们之间有较为明确的界限。“对偶”是指用字数相等、句法相似的语句表现相反或相关的意思,在两个句子中,无论是读音、语调。 展开更多
关键词 修辞方法 parallelism 英诗 ANTITHESIS PARALLELISM 修辞作用 句式结构 平行句 something 平行结构
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从功能和认知的视角看Parallelism 认领 引用 被引量：2
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作者 王水莲 《湘潭师范学院学报（社会科学版）》 2002年第6期137-140,共4页
从功能解释语言现象是人类认知和交际的普通模式。普通模式的建立是作为对语言进行功能解释的前提 ,也是人类认知世界和传递信息的哲学抽象。我们可以从功能和认知的视角 。
关键词 功能 Parallelism 认知 平行结构 排比 修辞学 句法功能 语篇功能
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Parallelism and Optimization of Numerical Ocean Forecasting Model 认领 引用
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作者 XU Jianliang PANG Renbo +2 位作者 TENG Junhua LIANG Hongtao YANG Dandan 《Journal of Ocean University of China》 SCIE CAS 2016年第5期783-788,共6页
According to the characteristics of Chinese marginal seas, the Marginal Sea Model of China(MSMC) has been developed independently in China. Because the model requires long simulation time, as a routine forecasting mod... According to the characteristics of Chinese marginal seas, the Marginal Sea Model of China(MSMC) has been developed independently in China. Because the model requires long simulation time, as a routine forecasting model, the parallelism of MSMC becomes necessary to be introduced to improve the performance of it. However, some methods used in MSMC, such as Successive Over Relaxation(SOR) algorithm, are not suitable for parallelism. In this paper, methods are developedto solve the parallel problem of the SOR algorithm following the steps as below. First, based on a 3D computing grid system, an automatic data partition method is implemented to dynamically divide the computing grid according to computing resources. Next, based on the characteristics of the numerical forecasting model, a parallel method is designed to solve the parallel problem of the SOR algorithm. Lastly, a communication optimization method is provided to avoid the cost of communication. In the communication optimization method, the non-blocking communication of Message Passing Interface(MPI) is used to implement the parallelism of MSMC with complex physical equations, and the process of communication is overlapped with the computations for improving the performance of parallel MSMC. The experiments show that the parallel MSMC runs 97.2 times faster than the serial MSMC, and root mean square error between the parallel MSMC and the serial MSMC is less than 0.01 for a 30-day simulation(172800 time steps), which meets the requirements of timeliness and accuracy for numerical ocean forecasting products. 展开更多
关键词 parallelism partition steps faster serial dynamically forecasting marginal overlapped neighbor
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Towards efficient deep neural network training by FPGA-based batch-level parallelism 认领 引用 被引量：4
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作者 Cheng Luo Man-Kit Sit +3 位作者 Hongxiang Fan Shuanglong Liu Wayne Luk Ce Guo 《Journal of Semiconductors》 EI CAS CSCD 2020年第2期51-62,共12页
Training deep neural networks(DNNs)requires a significant amount of time and resources to obtain acceptable results,which severely limits its deployment in resource-limited platforms.This paper proposes DarkFPGA,a nov... Training deep neural networks(DNNs)requires a significant amount of time and resources to obtain acceptable results,which severely limits its deployment in resource-limited platforms.This paper proposes DarkFPGA,a novel customizable framework to efficiently accelerate the entire DNN training on a single FPGA platform.First,we explore batch-level parallelism to enable efficient FPGA-based DNN training.Second,we devise a novel hardware architecture optimised by a batch-oriented data pattern and tiling techniques to effectively exploit parallelism.Moreover,an analytical model is developed to determine the optimal design parameters for the DarkFPGA accelerator with respect to a specific network specification and FPGA resource constraints.Our results show that the accelerator is able to perform about 10 times faster than CPU training and about a third of the energy consumption than GPU training using 8-bit integers for training VGG-like networks on the CIFAR dataset for the Maxeler MAX5 platform. 展开更多
关键词 deep neural network training FPGA batch-level parallelism
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The Multi-field Coupled Vibration Analysis of AT-Cut Quartz Crystal Resonators with Parallelism Error 认领 引用 被引量：1
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作者 Mengjie Li Nian Li +4 位作者 Peng Li Dianzi Liu Iren EKuznetsova Zhenghua Qian Tingfeng Ma 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2023年第2期349-360,共12页
During the fabrication of quartz crystal resonators(QCRs),parallelism error is inevitably generated,which is rarely investigated.In order to reveal the influence of parallelism error on the working performance of QCRs... During the fabrication of quartz crystal resonators(QCRs),parallelism error is inevitably generated,which is rarely investigated.In order to reveal the influence of parallelism error on the working performance of QCRs,the coupled vibration of a non-parallel AT-cut quartz crystal plate with electrodes is systematically studied from the views of theoretical analysis and numerical simulations.The two-dimensional thermal incremental field equations are solved for the free vibration analysis via the coefficient-formed partial differential equation module of the COMSOL Multiphysics software,from which the frequency spectra,frequency–temperature curves,and mode shapes are discussed in detail.Additionally,the piezoelectric module is utilized to obtain the admittance response under different conditions.It is demonstrated that the parallelism error reduces the resonant frequency.Additionally,symmetry broken by the non-parallelism increases the probability of activity dip and is harmful to QCR’s thermal stability.However,if the top and bottom surfaces incline synchronously in the same direction,the influence of parallelism error is tiny.The conclusions achieved are helpful for the QCR design,and the methodology presented can also be applied to other wave devices. 展开更多
关键词 Quartz crystal resonators Parallelism error Resonant frequency Mode coupling Admittance
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Parallelism与对偶、排比 认领 引用 被引量：10
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作者 叶定国 《外语与外语教学》 CSSCI 北大核心 1999年第2期53-55,共3页
关键词 Parallelism 汉语 英语修辞手段 共同词语 完全相同 对偶句 平行式 句法 句子 子排列
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英语修辞格Parallelism的表现形式与效果 认领 引用 被引量：4
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作者 蔡国华 《华南师范大学学报（社会科学版）》 CSSCI 2003年第3期139-141,共3页
关键词 英语 修辞格 Parallelism 平行 表现形式 效果
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试论Parallelism的类型及其作用 认领 引用 被引量：6
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作者 周维杰 《北京第二外国语学院学报》 2000年第2期66-71,共6页
本文论述了 Parallelism的五个类型 ,即语音、词汇、短语、句子和段落的平行排列 ,以及它的作用 ,即通过平行排列 ,或者形成节奏感和韵律美 ;或者造成层次感和绘画美 ;或者构成立体感和建筑美 ;或者通过相互指涉 ,以扩大表意空间 ;或者... 本文论述了 Parallelism的五个类型 ,即语音、词汇、短语、句子和段落的平行排列 ,以及它的作用 ,即通过平行排列 ,或者形成节奏感和韵律美 ;或者造成层次感和绘画美 ;或者构成立体感和建筑美 ;或者通过相互指涉 ,以扩大表意空间 ;或者造成磅礴的气势 ,以强化表达效果 ,突出表达内容等。 展开更多
关键词 Parallelism 语音 词汇 英语 修辞手法
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Parallelism在《怦然心动》中的修辞效果研究 认领 引用 被引量：1
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作者 岑淑阳 吴素芳 《海外英语》 2018年第18期75-77,共3页
该文在深入分析英语修辞手法Parallelism的定义、特点的基础上,以美国作家Wendelin Van Draanen笔下的小说Flipped(《怦然心动》)为例,结合小说中的语境,对Parallelism具体修辞效果进行了深入分析研究。
关键词 Parallelism 怦然心动 修辞效果
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英语中Parallelism的修辞手法 认领 引用 被引量：1
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作者 禹淑英 《怀化师专学报》 1999年第6期96-97,共2页
关键词 英语 Parallelism 修辞手法 排比 句子结构
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论Parallelism的形式及功能 认领 引用 被引量：1
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作者 张辉松 《湖北师范学院学报（哲学社会科学版）》 2001年第1期65-69,共5页
本文从形式及功能两个方面对英语parallelism进行了较为深入的探讨，并将其定义为：将同一词语并列重复，或将结构相同或相似、语义相关（相同、相似、互补或相反）、语气一致的词、词组、分句、句子或段落并列使用的一种修辞手段，同... 本文从形式及功能两个方面对英语parallelism进行了较为深入的探讨，并将其定义为：将同一词语并列重复，或将结构相同或相似、语义相关（相同、相似、互补或相反）、语气一致的词、词组、分句、句子或段落并列使用的一种修辞手段，同时指出，Parallelism不仅具有突出语义、增强韵律的功能，而且具有很强的语篇功能。 展开更多
关键词 英语 parallelism 形式 功能
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Rhythm of Parallelism in English Political Speech —— Taking I Have a Dream as an Example 认领 引用 被引量：1
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作者 张春晓 《海外英语》 2016年第3期224-225,共2页
Two groups of parallelism in Martin Luther King's I Have a Dream are selected to analyze the rhythmic features in terms of prominence and duration. By applying Praat to label the sentences, some findings are as fo... Two groups of parallelism in Martin Luther King's I Have a Dream are selected to analyze the rhythmic features in terms of prominence and duration. By applying Praat to label the sentences, some findings are as follows: In parallel sentences,the duration of each parallel structure is more or less equal due to the same number of prominence, although sentence length is different; the mean duration of syllables in long sentences is shorter as a result of vowel truncation. 展开更多
关键词 rhythm parallelism political speech
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英语中Parallelism修辞格的翻译策略研究 认领 引用 被引量：1
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作者 林成樑 《开封教育学院学报》 2015年第5期35-36,共2页
英语中的Parallelism作为重要的修辞手段之一,在小说、戏剧、诗歌等一些文学作品中十分常见。要更好地理解和欣赏品读作品中Parallelism的修辞格,需对Parallelism进行灵活翻译。通过介绍英语修辞格Parallelism的五种翻译策略,为再现其... 英语中的Parallelism作为重要的修辞手段之一,在小说、戏剧、诗歌等一些文学作品中十分常见。要更好地理解和欣赏品读作品中Parallelism的修辞格,需对Parallelism进行灵活翻译。通过介绍英语修辞格Parallelism的五种翻译策略,为再现其修辞美、实现精确翻译提供借鉴。 展开更多
关键词 英语修辞格 Parallelism 翻译策略
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Improvement Detecting Method of Optical Axes Parallelism of Shipboard Photoelectrical Theodolite Based on Image Processing 认领 引用 被引量：4
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作者 Huihui Zou 《Optics and Photonics Journal》 2017年第8期127-133,共7页
An improvement detecting method was proposed according to the disadvantages of testing method of optical axes parallelism of shipboard photoelectrical theodolite (short for theodolite) based on image processing. Point... An improvement detecting method was proposed according to the disadvantages of testing method of optical axes parallelism of shipboard photoelectrical theodolite (short for theodolite) based on image processing. Pointolite replaced 0.2'' collimator to reduce the errors of crosshair images processing and improve the quality of image. What’s more, the high quality images could help to optimize the image processing method and the testing accuracy. The errors between the trial results interpreted by software and the results tested in dock were less than 10'', which indicated the improve method had some actual application values. 展开更多
关键词 Improvement Detecting Method Shipboard Photoelectrical Theodolite Optical Axes Parallelism Image Processing
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功能对等理论指导下Parallelism的翻译——以The Road Less Traveled为例 认领 引用
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作者 李琼 罗厚健 《黄冈师范学院学报》 2020年第5期103-109,共7页
Parallelism在英语中具有修辞和语法双重功能。在英汉翻译对比研究中,学术界关注较多的是它与中文排比的构成差异及修辞功用,对它的语法功能研究较少。实践证明,英汉排比结构的对等转译不仅有助于保留源文本的语言特色和功能,还可以帮... Parallelism在英语中具有修辞和语法双重功能。在英汉翻译对比研究中,学术界关注较多的是它与中文排比的构成差异及修辞功用,对它的语法功能研究较少。实践证明,英汉排比结构的对等转译不仅有助于保留源文本的语言特色和功能,还可以帮助译文读者更好地把握原文结构,明了行文思路。Parallelism的修辞功能和语法功能同等重要,都应引起译界的足够重视。本文在功能对等理论的指导下,以美国作家M·斯科特·派克的心理学著作——The Road Less Traveled中的排比句的翻译为例,探讨如何通过直译法、转译法、分句法、逆序法、增词法和减词法来提高原文读者和译文读者反应的相似性,实现功能对等目的。 展开更多
关键词 Parallelism 排比 修辞 功能对等
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Exploiting Parallelism in the Simulation of General Purpose Graphics Processing Unit Program 认领 引用
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作者 赵夏 马胜 +1 位作者 陈微 王志英 《Journal of Shanghai Jiaotong university(Science)》 EI 2016年第3期280-288,共9页
The simulation is an important means of performance evaluation of the computer architecture. Nowadays, the serial simulation of general purpose graphics processing unit(GPGPU) architecture is the main bottleneck for t... The simulation is an important means of performance evaluation of the computer architecture. Nowadays, the serial simulation of general purpose graphics processing unit(GPGPU) architecture is the main bottleneck for the simulation speed. To address this issue, we propose the intra-kernel parallelization on a multicore processor and the inter-kernel parallelization on a multiple-machine platform. We apply these two methods to the GPGPU-sim simulator. The intra-kernel parallelization method firstly parallelizes the serial simulation of multiple compute units in one cycle. Then it parallelizes the timing and functional simulation to reduce the performance loss caused by the synchronization between different compute units. The inter-kernel parallelization method divides multiple kernels of a CUDA program into several groups and distributes these groups across multiple simulation hosts to perform the simulation. Experimental results show that the intra-kernel parallelization method achieves a speed-up of up to 12 with a maximum error rate of 0.009 4% on a 32-core machine, and the inter-kernel parallelization method can accelerate the simulation by a factor of up to 3.9 with a maximum error rate of 0.11% on four simulation hosts. The orthogonality between these two methods allows us to combine them together on multiple multi-core hosts to get further performance improvements. 展开更多
关键词 general purpose graphics processing unit(GPGPU) multicore intra-kernel inter-kernel parallel
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Parallelism of spatial data mining based on autocorrelation decision tree 认领 引用 被引量：1
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作者 Zhang Shuyu Zhu Zhongying 《Journal of Systems Engineering and Electronics》 2005年第4期947-956,共10页
Define and theory of autocorrelation decision tree （ADT） is introduced. In spatial data mining, spatial parallel query are very expensive operations. A new parallel algorithm in terms of autocorrelation decision tre... Define and theory of autocorrelation decision tree （ADT） is introduced. In spatial data mining, spatial parallel query are very expensive operations. A new parallel algorithm in terms of autocorrelation decision tree is presented. And the new method reduces CPU- and I/O-time and improves the query efficiency of spatial data. For dynamic load balancing, there are better control and optimization. Experimental performance comparison shows that the improved algorithm can obtain a optimal accelerator with the same quantities of processors. There are more completely accesses on nodes. And an individual implement of intelligent information retrieval for spatial data mining is presented. 展开更多
关键词 spatial databases autocorrelation attribute decision tree parallelism.
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Parallelism和排比的对比研究 认领 引用 被引量：3
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作者 黄昀 《湖南文理学院学报（社会科学版）》 2007年第5期74-75,共2页
关键词 Parallelism 排比 对比 美学原理 语言艺术 修辞手段 均衡美 汉语
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