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Public Safety Knowledge Graph using Bilstm- Attention-CRF and Multi-Source Data 基于Bilstm- Attention-CRF和多源数据的公共安全知识图谱
Pub Date : 2020-01-01 DOI: 10.12783/DTMSE/AMEME2020/35600
Xiaoqing Sun, Yingliang Huang, Yaqin Luo, Pengfei Yin, Xuan Cai, Yuyang Tang, Wenbo Li
Public safety has always been a hot topic in the world, yet related data are stored in various forms of structures and have a huge amount. The poor characteristics of these huge amounts of heterogeneous data bring great difficulties to its application. For the purpose of applying these data conveniently and efficiently, knowledge graph was adopted. Public safety knowledge graph can help organize public safety data by an organized and properly utilized form, so that it can be used more optimally in public safety related retrieval, question and answer systems, etc. In this paper, unstructured, as well as structured public safety data were used for constructing, with the support of BiLSTM-Attention-CRF model. To be able to reveal this public safety knowledge graph in an understandable way, Neo4j database was used to store public safety knowledge graph.
公共安全一直是国际上的热门话题,但相关数据以各种结构形式存储,数量巨大。这些海量异构数据的不良特性给其应用带来了很大的困难。为了方便、高效地应用这些数据,采用了知识图谱的方法。公共安全知识图谱可以将公共安全数据以一种有组织、合理利用的形式组织起来,使其在与公共安全相关的检索、问答系统等方面得到更优的利用。本文在BiLSTM-Attention-CRF模型的支持下,采用非结构化和结构化公共安全数据进行构建。为了能够以一种可理解的方式展示该公共安全知识图谱,使用Neo4j数据库存储公共安全知识图谱。
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引用次数: 0
Research on Facial Expression Recognition Algorithm Based on CNN 基于CNN的面部表情识别算法研究
Pub Date : 2020-01-01 DOI: 10.12783/DTMSE/AMEME2020/35589
Jian-liang Meng, Li-Guo Zheng
In order to realize the recognition of facial expression quickly and accurately, the traditional convolutional neural network is improved in this paper, and the research of facial expression recognition based on LeNet-5 convolutional neural network algorithm is proposed. Firstly, the image is preprocessed, including normalization and geometric transformation. Secondly, the convolution neural network model based on LeNet-5 model is designed, in which the Flatten layer is added, the Dropout strategy is introduced, and the LeakReLU is used as the activation function. At last, the experimental results show that the recognition rate of the improved algorithm is better than that of LBP, sift and hog, but it takes the longest time and the largest amount of computation.
为了快速准确地实现面部表情的识别,本文对传统的卷积神经网络进行了改进,提出了基于LeNet-5卷积神经网络算法的面部表情识别研究。首先对图像进行预处理,包括归一化和几何变换。其次,设计了基于LeNet-5模型的卷积神经网络模型,在模型中加入Flatten层,引入Dropout策略,以LeakReLU作为激活函数;最后,实验结果表明,改进算法的识别率优于LBP、sift和hog,但耗时最长,计算量最大。
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引用次数: 3
Weighted Sum Synchronization of Stochastic Delayed Memristive Neural Networks via a Novel Hybrid Control 基于一种新型混合控制的随机延迟记忆神经网络加权和同步
Pub Date : 2020-01-01 DOI: 10.12783/DTMSE/AMEME2020/35592
N. Yang, Yongbin Yu, Jingye Cai, Xiangxiang Wang
This paper investigates the weighted sum synchronization issue of stochastic delayed memristive neural networks (SDMNNs) via a novel hybrid control (HC). The switching strategy is applied to the controller to cope with the challenges induced concurrently by impulses, stochastic turbulence and time-varying delays. Furthermore, the control costs can be reduced by using this designed controller. Finally, novel Lyapunov functions and new analytical methods are contructed, whic can be used to realize the weighted sum synchronization of SDMNNs via HC.
通过一种新的混合控制方法研究了随机延迟记忆神经网络(SDMNNs)的加权和同步问题。将切换策略应用于控制器,以应对脉冲、随机湍流和时变延迟同时引起的挑战。此外,采用该控制器还可以降低控制成本。最后,构造了新的Lyapunov函数和新的分析方法,可用于通过HC实现sdmnn的加权和同步。
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引用次数: 0
Knowledge Graph Construction for Electric Power Science and Technology Achievements 电力科技成果知识图谱的构建
Pub Date : 2020-01-01 DOI: 10.12783/DTMSE/AMEME2020/35598
Zhen Zhang, Huibin Liu, Xuemin Mao, Zhongxu Li, Minmin Sun, Ning Luo
The management of power technology requires great effort and cost due to its wide coverage and complex data types. However, under the current technical background of deepening informatization degree, negative effects such as large information redundancy and ambiguous information makes it facing greater challenges. Based on this, this paper proposes to realize the effective management of electric power science and technology information by means of knowledge graph. We use the data of electric power science and technology achievements from 2005 to 2018 to build the knowledge graph through the knowledge graph building platform, so as to provide effective management methods for the management of electric power sci-tech achievements
电力技术的管理由于其广泛的覆盖范围和复杂的数据类型,需要付出巨大的努力和成本。然而,在当前信息化程度不断加深的技术背景下,信息冗余大、信息模糊等负面效应使其面临更大的挑战。在此基础上,提出利用知识图谱实现电力科技信息的有效管理。利用2005 - 2018年电力科技成果数据,通过知识图谱构建平台构建知识图谱,为电力科技成果管理提供有效的管理方法
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引用次数: 0
Underwater Target Ranging and Sound Speed Profile Inversion via Eigenray Propagation Time-Delay Matching 基于特征射线传播时延匹配的水下目标测距与声速剖面反演
Pub Date : 2020-01-01 DOI: 10.12783/DTMSE/AMEME2020/35601
Jianbo Liu, Shuping Han, Jingfeng Xu, Gang Yang
An underwater target ranging and sound speed profile (SSP) inversion algorithm for synchronous beacon is proposed. In the condition of actual SSP unavailable, based on the multipath propagation time-delay estimation, a genetic algorithm is employed to estimate the target range and SSP by eigenray propagation time-delay matching. Lake trial results show the algorithm could achieve target ranging and SSP inversion simultaneously.
提出了一种同步信标水下目标测距声速剖面(SSP)反演算法。在实际SSP不可用的情况下,在多径传播时延估计的基础上,采用遗传算法通过特征射线传播时延匹配估计目标距离和SSP。湖泊试验结果表明,该算法可以同时实现目标测距和SSP反演。
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引用次数: 0
Optical Lens Edge Detection Method Based Coaxial Alignment Micro Assembly 基于同轴对准微装配的光学透镜边缘检测方法
Pub Date : 2020-01-01 DOI: 10.12783/DTMSE/AMEME2020/35596
Lei Wang, Zhijing Zhang, Dongsheng Zhu
Optical lens assemblies are key to affecting lens accuracy. The coaxial alignment could improve the accuracy of lens assembly effectively in automatic assembly system. But it was difficult to capture the full edge of the lens in one image because of the limit of the CCD camera field of view and the image edge of the lens is not sharp. The purpose of this paper is to propose an edge detection method of optical lens based on Holistically-Nested Edge Detection (HED) for a micro-assembly system with coaxial alignment function. First, the edge of the optical lens is got by HED method, and then the thick edge of the detected optical lens is refined image and the pixel points in the middle position of the thick edge of the recognized image is extracted. Finally, the least square method is used to fit the edge image of the lens. The results of comparative experimental shows that this method which can extract edge of the optical lens image automatically is more robust and more accurate than the previous edge recognition methods.
光学透镜组件是影响透镜精度的关键。在自动装配系统中,同轴对准可以有效地提高透镜装配精度。但由于CCD相机视场的限制和镜头的图像边缘不清晰,很难在一张图像中捕捉到镜头的全部边缘。针对具有同轴对准功能的微装配系统,提出了一种基于整体嵌套边缘检测(HED)的光学透镜边缘检测方法。首先利用HED方法得到光学透镜的边缘,然后对检测到的光学透镜的厚边缘进行细化成像,提取识别图像中厚边缘中间位置的像素点。最后,利用最小二乘法对镜头边缘图像进行拟合。对比实验结果表明,该方法能够自动提取光学镜头图像的边缘,比以往的边缘识别方法具有更强的鲁棒性和准确性。
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引用次数: 0
A Time-Domain Finite Difference Decomposition Method for Boulders in the Cultivated Layers Based on Ground-Penetrating Radar 基于探地雷达的耕地层内巨石时域有限差分分解方法
Pub Date : 2020-01-01 DOI: 10.12783/DTMSE/AMEME2020/35595
Hao Dai, Huimin Yu, Jianshan Hou, Youqian Yan, Peitong Cong
Afinite difference time domain (FDTD) model of the electromagnetic wave of the two-dimensional Maxwell's discrete equation is established, based on the optimization of the Ground-penetrating radar (GPR) antenna frequency (recommended 100MHz), time window length, and sampling interval parameters. In our study, three test schemes are designed: The electromagnetic wave enters the boulder medium from the soil to have the first reflection (top reflection) when a boulder point appears in the homogeneous soil, and then passes through the boulder in the water and re-enters the soil. The secondary reflection (bottom reflection) is generated, and radar image interpretation shows that the size of the boulder is the same as the designed size (0.5m).Then, the interference phenomenon of the reflection waves of the two boulders can be simulated when two boulders appear in a homogeneous soil, and the spatial position and size of the two boulders can be distinguished. For the cultivated soil layer with obvious horizontal stratification, the upper soil layer does not affect the reflection of the boulder when the boulder is located in the lower layer, and the location and size of the boulder can still be accurately interpreted. Numerical test results show that the FDTD method is a very effective method to forward simulate the boulder phenomenon in the cultivated soil layer, which has the advantages of simple principle, high simulation accuracy and fast calculation speed.
在优化探地雷达(GPR)天线频率(推荐100MHz)、时窗长度和采样间隔等参数的基础上,建立了二维麦克斯韦离散方程的电磁波时域有限差分(FDTD)模型。在我们的研究中,设计了三种测试方案:电磁波从土壤进入卵石介质,在均匀土中出现卵石点时进行第一次反射(顶反射),然后穿过水中的卵石重新进入土壤。产生二次反射(底部反射),雷达图像解译显示,巨石尺寸与设计尺寸相同(0.5m)。然后,可以模拟在均匀土壤中出现两块巨石时,两块巨石反射波的干涉现象,从而区分两块巨石的空间位置和大小。对于水平分层明显的耕地土壤层,当土壤层位于下层时,上层土壤层不影响土壤层对土壤层的反射,仍能准确解译出土壤层的位置和大小。数值试验结果表明,时域有限差分法是一种非常有效的正演模拟耕地土层中巨石现象的方法,具有原理简单、模拟精度高、计算速度快等优点。
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引用次数: 0
The Effects of Sufentanil Postconditioning on Ischemic-reperfusion Injury in Rats 舒芬太尼后处理对大鼠缺血再灌注损伤的影响
Pub Date : 2017-10-05 DOI: 10.12783/dtmse/amsee2017/14298
Lifanxing Liu, G. Zhao, M. Gao, Yan Zhang, Kai Li
This study aims to explore the protective effects of sufentanil-postconditioning on myocardial cells in rats. Methods: Choosing 80 healthy rats, all was established in Myocardial Ischemia-reperfusion Model. Dividing them into 8group(n=10):1)SHAM group;2)CONgroup;3)IPC group; 4~8) SUF group. Observe and count:① The Amount of Apoptosis Positive Cell Nucleus, Total Cell Nucleus, and rate of myocardial cell apoptosis. ②Concentration of cTnI. ③Weight of Left Ventricle, Weight of Ischemic Myocardium, Weight of infarction. The areas of myocardial ischemia and myocardial infarction are also calculated. ④HE staining. Results:① The apoptosis index is significantly lower in SHAM Group than others groups (P0.05). ④For HE staining, the myocardium tissue of rats in SHAM Group shows no obvious pathological change. But the change is visible in CON group. IPC Group and SUF group with mild pathological change. Conclusion: Post-treatment with sufentanil alleviates myocardial ischemia-reperfusion injury in rats.
本研究旨在探讨舒芬太尼后处理对大鼠心肌细胞的保护作用。方法:选取健康大鼠80只,建立心肌缺血再灌注模型。随机分为8组(n=10):1)SHAM组;2)cong组;3)IPC组;4~8) SUF组。观察计数:①凋亡阳性细胞核数、总细胞核数、心肌细胞凋亡率。②cTnI浓度。③左心室重量、缺血心肌重量、梗死重量。计算了心肌缺血和心肌梗死的面积。④他染色。结果:①SHAM组细胞凋亡指数明显低于其他各组(P0.05)。④HE染色,SHAM组大鼠心肌组织未见明显病理改变。但这种变化在CON组是明显的。IPC组和SUF组均有轻度病理改变。结论:舒芬太尼可减轻大鼠心肌缺血再灌注损伤。
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引用次数: 0
A Case Study of Hierarchical Clustering for Maritime Industry 以海运业层次聚类为例
Pub Date : 2017-10-05 DOI: 10.12783/DTMSE/AMSEE2017/14300
Fang Han, Hao Wang
. Data in the contemporary world has penetrated into every industry and is increasingly becoming a necessity in enterprises, simultaneously it has also become an important factor of production. Maritime transport is one of the most vital transport systems and maritime big data is attracting increase interest from both the industry and academia. In this paper, we present a case study using hierarchical clustering on a dataset about a vessel’s behavior during operations. We have also produced visually appealing graphs and charts to assist the data analysis.
. 当今世界,数据已经渗透到各行各业,越来越成为企业的必需品,同时也成为重要的生产要素。海上运输是最重要的运输系统之一,海事大数据正引起业界和学术界越来越多的兴趣。在本文中,我们提出了一个案例研究,在一个关于船舶在操作过程中的行为的数据集上使用分层聚类。我们还制作了视觉上吸引人的图形和图表来协助数据分析。
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引用次数: 0
Load Balancing in Cloud-based Flow Security System 基于云的流量安全系统中的负载均衡
Pub Date : 2017-10-05 DOI: 10.12783/DTMSE/AMSEE2017/14290
Ga-Jin He, Yuelei Xiao
In the context of load balancing [1], Lu et al. proposed a novel class of algorithms called Join-Idle-Queue (JIQ) for distributed load balancing in large systems, where a group of dispatchers distribute jobs to a cluster of parallel servers. Each dispatcher maintains a queue called Idle-Queue for idle servers. When a job arrives to a dispatcher at random, the dispatcher sends it to a server which in the head of the Idle-Queue, or to a random server if the Idle-Queue is empty. Meanwhile conversely, when a server has no jobs, it actively requests to be placed on an Idle-Queue. Although this algorithm was shown to be quite effective [2,3], it is defective in some respects. This paper presents several new improvements, which makes the algorithm more effective, especially in Cloud-based Flow Security System (CFS). These improvements focus primarily on these aspects, such as the definition of idle server, data concurrency while choosing an Idle-Queue, etc. The experimental results show that the improved load balancing algorithm can improve the utilization of resources in a certain extent.
在负载平衡[1]的背景下,Lu等人提出了一类新的算法,称为Join-Idle-Queue (JIQ),用于大型系统中的分布式负载平衡,其中一组调度程序将作业分发到并行服务器集群。每个调度程序为空闲服务器维护一个称为idle - queue的队列。当作业随机到达调度程序时,调度程序将其发送到位于Idle-Queue头部的服务器,如果Idle-Queue为空,则发送到随机服务器。与此同时,当服务器没有作业时,它会主动请求将其放置在Idle-Queue上。虽然该算法被证明是相当有效的[2,3],但它在某些方面存在缺陷。本文提出了一些新的改进,使算法更加有效,特别是在基于云的流量安全系统(CFS)中。这些改进主要集中在这些方面,例如空闲服务器的定义、选择idle - queue时的数据并发性等。实验结果表明,改进后的负载均衡算法能在一定程度上提高资源利用率。
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引用次数: 0
期刊
DEStech Transactions on Materials Science and Engineering
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