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2021 7th Annual International Conference on Network and Information Systems for Computers (ICNISC)最新文献

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Application of Docker Container Technology in University Information Center Docker容器技术在高校信息中心中的应用
Wei Wang
With the rapid development of network technology, all sectors of society are gradually inseparable from the application of network system, universities are no exception. They have their own application system in enrollment, teaching, employment, general affairs and other departments, which undoubtedly brings great work pressure to the University Information Center. However, the original application service deployment mode is faced with the problems of low resource utilization, complex management and low implementation efficiency. Combined with the actual situation of colleges and universities, this paper proposes an application service deployment solution based on docker container technology.
随着网络技术的飞速发展,社会各行各业都逐渐离不开网络系统的应用,高校也不例外。他们在招生、教学、就业、总务等部门都有自己的应用系统,这无疑给高校信息中心带来了很大的工作压力。但原有的应用服务部署模式面临着资源利用率低、管理复杂、实施效率低等问题。本文结合高校的实际情况,提出了一种基于docker容器技术的应用服务部署方案。
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引用次数: 0
A Comprehensive Performance Evaluation Method for Fuel Cell Commercial Vehicles 燃料电池商用车综合性能评价方法
Zhu Yan, Zhenyu Sun, Peng Liu, Chongwen Wang, Naiwu Li
With the development of fuel cell electric vehicles (FCEVs), the number of FCEVs is increasing constantly. In China, the use of commercial vehicles is promoted vigorously. It is necessary to propose a method to evaluate the comprehensive performance of fuel cell commercial vehicles. During the application of cloud data, operation data of electric vehicles can be stored on the cloud to evaluate comprehensive performance. In this paper, a method based on operation data is proposed to evaluate the comprehensive performance of fuel cell commercial vehicles. 5 indicators, including fueling economy, refueling time, driving range, environmental adaptability and reliability, are analyzed and evaluated by the original data. To comprehensively score the performance of vehicles, a weighted score mechanism is proposed. The weights of 5 factors are decided by the analytic hierarchy process. Finally, 2 vehicles are evaluated using the proposed scoring system.
随着燃料电池电动汽车的发展,燃料电池电动汽车的数量不断增加。在中国,商用车的使用得到大力推广。有必要提出一种评价燃料电池商用车综合性能的方法。在云数据的应用过程中,可以将电动汽车的运行数据存储在云端,进行综合性能评估。提出了一种基于运行数据的燃料电池商用车综合性能评价方法。利用原始数据对燃油经济性、加油时间、续驶里程、环境适应性、可靠性等5个指标进行分析评价。为了对车辆性能进行综合评分,提出了一种加权评分机制。采用层次分析法确定5个因素的权重。最后,使用提出的评分系统对2辆车进行评估。
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引用次数: 0
Chinese Visiting Scholars' Canadian Community Engagement 中国访问学者加拿大社区参与
Pinge Ai, Yuehua Zhu
This proposal is designed to exam Chinese visiting scholars' Canadian community engagement experience and explore how they interact with the Canadian people in their one-year Canadian University visit. The Canadian community activities the Chinese visiting scholars took part in, their behaviors, their dilemmas, and their perspectives on their Canadian visits will be explored.
本提案旨在考察中国访问学者在加拿大的社区参与经验,并探讨他们在一年的加拿大大学访问中如何与加拿大人民互动。本文将探讨中国访问学者参与的加拿大社区活动、他们的行为、他们的困境以及他们对加拿大访问的看法。
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引用次数: 0
A 3D Multi-Scale Multi-Attention UNet for Automatic Hippocampal Segmentation 基于三维多尺度多注意网络的海马自动分割
Lan Lin, Wenjie Kang, Yuchao Wu, Yuhan Zhao, Sixue Wang, Danyi Lin, Jinlu Gao
Hippocampus is one of the first affected brain regions in Alzheimer's disease (AD). To help AD diagnosis, hippocampal atrophy have been studied extensively, but accurate segmentation of hippocampus has always been a difficult problem. In this study, we propose a 3D multi-scale multi-attention UNet with the use of multi-scale inception module, residual connections and attention modules for automatic hippocampal segmentation. Experimental results on the HarP dataset show that our proposed method can achieve average Dice coefficient of 0.827 for hippocampal segmentation, which outperform classic 3D UNet. The efficiency and accuracy of the proposed methods suggests that it may facilitate the study of the hippocampus for large-scale studies.
海马体是阿尔茨海默病(AD)中最早受影响的大脑区域之一。为了帮助AD的诊断,人们对海马萎缩进行了广泛的研究,但海马的准确分割一直是一个难题。在这项研究中,我们提出了一个三维多尺度多注意UNet,使用多尺度初始模块、残差连接和注意模块进行海马自动分割。在HarP数据集上的实验结果表明,我们提出的方法可以实现海马分割的平均Dice系数为0.827,优于经典的3D UNet。所提出的方法的效率和准确性表明,它可能有助于对海马体进行大规模研究。
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引用次数: 0
A Research on the Perception of Authenticity of Self-service Tourists Based on the Background of Smart Tourism 基于智慧旅游背景的自助游游客真实性感知研究
Na Gong, Haiyan Fu, Chi Gong
In recent years, the promotion of smart tourism has not only improved the level of information technology in tourist destinations, but also brought various conveniences to self-service tourists to a certain extent. However, the improvement of self-service tourists' satisfaction with the tourist destination experience has not been obvious. This article analyzes the influencing factors between self-service tourists' satisfaction with the authenticity of tourist destinations and the data information of smart tourism platforms from the perspective of tourist perception in the development of big data modernization. It is found that first, the incomplete information on the smart tourism platform reduces the authenticity of experience of self-service tourists; second, the lack of innovation in smart tourism information platforms affects the authenticity of tourist destinations; last, there is a conflict between the limitations of cultural resources and the perception of the perception of authenticity, and so on. The satisfaction of college students majoring in tourism from the place of origin and the local perception provides suggestions for the development of smart tourism, and is expected to play a corresponding guiding role in the development of tourist destinations. Therefore, it is proposed to provide sustainable and thorough suggestions for the development of smart tourism by utilizing the perception of satisfaction of tourism major students and residents from the local region, which can be expected that it can play a corresponding guiding role for the development of tourism destinations.
近年来,智慧旅游的推广,不仅提高了旅游目的地的信息化水平,也在一定程度上给自助游游客带来了各种便利。然而,自助游游客对旅游目的地体验满意度的提升并不明显。本文从大数据现代化发展中游客感知的角度,分析了自助游游客对旅游目的地真实性满意度与智慧旅游平台数据信息之间的影响因素。研究发现,一是智慧旅游平台上信息的不完整降低了自助游游客体验的真实性;二是智慧旅游信息平台缺乏创新,影响旅游目的地的真实性;最后,文化资源的有限性与对真实性的感知之间存在冲突,等等。旅游专业大学生对原籍地的满意度和对当地的感知为智慧旅游的发展提供了建议,并有望对旅游目的地的发展起到相应的指导作用。因此,本文提出利用旅游专业学生和当地居民的满意度感知,为智慧旅游的发展提供可持续、深入的建议,期望能够对旅游目的地的发展起到相应的指导作用。
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引用次数: 1
Automatic Control System of Sluice Based on PLC, MCGS and MODBUS Communication 基于PLC、MCGS和MODBUS通信的水闸自动控制系统
Xueru Li, Fanwen Meng, Xuan Zheng
In order to realize the integrated function of sluice management and control, S7-1200 PLC is used as the master control unit and S7-200 smart is used as the slave control unit. The load, opening degree, water level and other data of the sluice are collected through the special instrument, and the data is transmitted to PLC for storage and processing through MODBUS-RTU protocol. MCGS human-computer interface is designed, and data exchange with PLC through Modbus-TCP protocol is implemented, and the efficiency and intelligence of the sluice operation are greatly improved.
为了实现水闸管理与控制的一体化功能,采用S7-1200 PLC作为主控单元,S7-200智能作为从控单元。通过专用仪表采集水闸的负荷、开度、水位等数据,并通过MODBUS-RTU协议将数据传输到PLC进行存储和处理。设计了MCGS人机界面,通过Modbus-TCP协议实现了与PLC的数据交换,大大提高了闸门运行的效率和智能化。
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引用次数: 0
Automatic Image Recognition of Austenite Grain Boundary in Martensitic Metallography based on Image Style Transfer 基于图像风格转移的马氏体金相奥氏体晶界图像自动识别
Xinghua Su, Sheng Zhan, Zhe Lv, Xiang Gao, Hang Su
For most steel materials, the conventional corrosion method can only observe the martensite structure after transformation. There are some problems in measuring austenite grain size, such as complex operation, difficult to ensure the corrosion quality and so on. Therefore, we use machine learning to identify the original austenite grain boundary according to the martensite structure of conventional corrosion. In this paper, image style transfer is realized by iterative method based on generating model, and austenite grain boundary recognition during martensitic transformation is realized by means of pre training network model vgg19. Firstly, the pre trained deep network vgg19 is used to extract the style and content features of martensite metallographic images. Then, the loss function of style and content is defined, and the gradient descent method is used to iterate step by step to optimize the total loss. Finally, the austenite image with clear grain boundary is obtained by texture segmentation.
对于大多数钢材料,常规腐蚀方法只能观察到相变后的马氏体组织。奥氏体晶粒尺寸测量存在操作复杂、腐蚀质量难以保证等问题。因此,我们根据常规腐蚀的马氏体结构,利用机器学习来识别原始奥氏体晶界。本文采用基于生成模型的迭代方法实现图像风格传递,通过预训练网络模型vgg19实现马氏体变换过程中奥氏体晶界识别。首先,利用预训练好的深度网络vgg19提取马氏体金相图像的样式和内容特征;然后,定义风格和内容的损失函数,采用梯度下降法逐级迭代优化总损失;最后,通过纹理分割得到晶界清晰的奥氏体图像。
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引用次数: 0
CBTC Systems Resilience Evaluation Based on Resource State Model under DoS Attacks DoS攻击下基于资源状态模型的CBTC系统弹性评估
Erni Guo, Bing Bu
Communication-based train control (CBTC) systems are threatened by information attacks, which may seriously disturb the operation of trains. In this paper, we propose a method to quantitatively study the resilience of CBTC systems under information attacks. Based on the key features of CBTC systems, a resource state model is proposed to analyze the impact of information attacks on resources. It studies the relation between resources and the operation states of trains, to measure the performance of CBTC systems under different operation states of trains. And it quantifies the resilience of CBTC systems under information attacks. The model uses redundant resources to reflect the resistance of resilience to highlight the fault-tolerance of the system. And the model considers the characteristics of system fail-safe for the first time. Finally, Monte Carlo method is used to simulate a CBTC system under different information attacks scenarios. Simulation results show that our method can effectively evaluate the effect of information attacks on the resilience and find the key weak points of a CBTC system.
基于通信的列车控制系统受到信息攻击的威胁,严重干扰列车运行。本文提出了一种定量研究CBTC系统在信息攻击下的弹性的方法。基于CBTC系统的关键特征,提出了一种资源状态模型来分析信息攻击对资源的影响。研究资源与列车运行状态之间的关系,衡量不同列车运行状态下CBTC系统的性能。量化了CBTC系统在信息攻击下的弹性。该模型利用冗余资源反映弹性的阻力,突出系统的容错能力。该模型首次考虑了系统的故障安全特性。最后,利用蒙特卡罗方法对不同信息攻击场景下的CBTC系统进行了仿真。仿真结果表明,该方法可以有效地评估信息攻击对系统弹性的影响,找到CBTC系统的关键弱点。
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引用次数: 2
Research on Time Domain Filtering Based on Choi-Williams Distribution about Time-Phase Modulation 基于Choi-Williams分布的时相调制时域滤波研究
Pei-hong Zhao, Ling Xu
Based on the non-stationary characteristics of the time-phase modulation signal, in this paper, Choi-Williams distribution time-domain filter method is put forward to solve the problem that the bad aggregation performance of time-domain analysis and poor detection performance of the system in the time-phase modulation signal analysis. First the best input parameter of the time-phase modulation signal is determined by the analyses of cyclo-stationarity and power spectral characteristics and the effect of the phase transition time, transition angle and other parameters on the power spectrum. Second the Choi-Williams transform method is used to get the relationship between the Choi-Williams time-frequency distribution and the phase mutation angle, the window function length, the carrier frequency and other parameters. Theoretical analysis and simulations show that: the time domain filtering based on Choi-Williams time-frequency distribution can convert the phase mutation characteristics of time-phase modulation signal into amplitude information by which we can detect TPM signal. The performance comparison is simulated between the detection method of this paper and the traditional filtering method, and the error rate of method in this paper is 1–2 dB lower than the traditional method.
针对时相调制信号的非平稳特性,本文提出了Choi-Williams分布时域滤波方法,以解决时相调制信号分析中系统时域分析聚合性能差、检测性能差的问题。首先通过分析周期平稳性和功率谱特性,以及相变时间、过渡角等参数对功率谱的影响,确定时相位调制信号的最佳输入参数;其次采用Choi-Williams变换方法得到Choi-Williams时频分布与相位突变角、窗函数长度、载波频率等参数的关系。理论分析和仿真结果表明:基于Choi-Williams时频分布的时域滤波可以将时相调制信号的相位突变特征转化为幅度信息,从而检测TPM信号。仿真比较了本文检测方法与传统滤波方法的性能,发现本文方法的误差率比传统方法低1 ~ 2 dB。
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引用次数: 0
Hardware Implementation Method of LDPC Efficient Decoding Based on FPGA 基于FPGA的LDPC高效解码硬件实现方法
Yuyang Ji, Yanjun Ji
In this paper,the logarithmic domain efficient decoding algorithm of LDPC code has been deeply studied,and the efficient algorithm with tree topology structure has been improved. The fixed-point representation and reweighting analysis of the receiving and processing information of LDPC code decoding has been carried out. At the same time,based on Quartus development software platform and Verilog HDL language,the efficient parallel decoding algorithm of regular LDPC code with length of 8designed by geometric construction method is designed, and the circuit design and simulation results of some main modules are given. The logic synthesis and implementation of the whole algorithm are carried out on StatixL EP2S60F484C3.The highest data processing rate is 10Mbps,and the error correction performance is ideal. After the reprocessing method is adopted,all the information in the decoding implementation process is the same standard,and there is no need for additional processing , which reduces the hardware complexity and calculation delay,and meets the needs of engineering implementation.
本文对LDPC码的对数域高效译码算法进行了深入研究,对树型拓扑结构的高效译码算法进行了改进。对LDPC码译码的接收和处理信息进行了定点表示和重加权分析。同时,基于Quartus开发软件平台和Verilog HDL语言,设计了用几何构造法设计的长度为8的规则LDPC码的高效并行解码算法,并给出了部分主要模块的电路设计和仿真结果。在StatixL EP2S60F484C3上进行了整个算法的逻辑综合和实现。数据处理速率最高可达10Mbps,纠错性能理想。采用再处理方法后,解码实现过程中的所有信息都是同一标准的,不需要再进行额外的处理,降低了硬件复杂度和计算延迟,满足工程实现的需要。
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引用次数: 0
期刊
2021 7th Annual International Conference on Network and Information Systems for Computers (ICNISC)
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