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2022 6th International Conference on Computer, Software and Modeling (ICCSM)最新文献

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Computer Geometric Modeling Approach of Weft Knitted fabric Structures 纬编织物结构的计算机几何建模方法
Pub Date : 2022-07-01 DOI: 10.1109/ICCSM57214.2022.00017
Wattana Nontawong, Rachata Songchaisanguan, W. Chaikumming, P. Patumchat, S. Sala-ngamand, Kiaertisak Sriprateep
The purpose of this article was to simulate the structure of Purl, Jersey and Interlock weft knitted fabric structures in three dimensions. The components consisted of twisted yarn with a model of filament assembly using Computer Aided Design (CAD) for representing the weft knitted fabric structures. The variable parameters used in the simulation. The results from 3 models of weft knitted fabrics showed that there are more realistic structures than revealed by previous study. The strength of these weft knitted fabric models will be analysed by Computer Aided Engineering (CAE) in future work.
本文的目的是在三维空间上模拟毛纬、棉纬和互锁纬针织物的结构。采用计算机辅助设计(CAD)对纬编针织物结构进行表征,并建立了长丝装配模型。仿真中使用的可变参数。3种纬编针织物模型的结果表明,该模型比以往的研究结果更加真实。这些纬编织物模型的强度将在今后的工作中利用计算机辅助工程(CAE)进行分析。
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引用次数: 0
Research on the Application of Economics Model in Network Course Design Based on Computer Data Platform 基于计算机数据平台的经济学模型在网络课程设计中的应用研究
Pub Date : 2022-07-01 DOI: 10.1109/ICCSM57214.2022.00014
Junhao Luo, Ladon Shu
This paper organically combines VaR and ES models with extreme value theory on a computer data platform. This paper uses the Bootstrap method to give the confidence interval of VaR and ES estimated by the extreme value theory at a certain confidence level, and improves the confidence interval estimated by the likelihood ratio method. Finally, this paper uses the logarithmic daily rate of return of China's Shanghai Composite Index from December 19, 2006 to September 30, 2020 to conduct an empirical study to give the VaR and ES values and confidence intervals of the Shanghai Composite Index.
本文在计算机数据平台上将VaR和ES模型与极值理论有机地结合起来。本文采用Bootstrap方法给出了极值理论估计的VaR和ES在一定置信水平下的置信区间,并对似然比法估计的置信区间进行了改进。最后,本文利用2006年12月19日至2020年9月30日中国上证综合指数的对数日收益率进行实证研究,给出上证综合指数的VaR、ES值和置信区间。
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引用次数: 0
Non-operative Personality Prediction Based on Knowledge Driven 基于知识驱动的非手术人格预测
Pub Date : 2022-07-01 DOI: 10.1109/ICCSM57214.2022.00018
H. Tao, Li Bi-cheng, Lin Zheng-Chao
At present, most personality trait prediction studies mainly use the cooperative method, that is, using the scale to collect users' personality trait information. This method mainly has the disadvantages of strong subjectivity, limited quantity and quality, insufficient lasting stability and requiring users to cooperate. At the same time, the mainstream method uses the black box method of supervised learning, which belongs to the data-driven method and is not interpretable. Knowledge driven dictionary method is expected to solve these problems and realize non cooperative personality prediction. This paper proposes a method of constructing personality dictionary based on the combination of knowledge base and corpus. On the other hand, aiming at the unclear physical meaning of personality scoring algorithm in personality analysis using dictionary method, this paper proposes a personality scoring algorithm based on vocabulary weight and word frequency. The results show that the personality dictionary constructed by this method can ensure both timeliness and comprehensiveness in vocabulary. The experimental results show that the personality dictionary constructed by this method can ensure both timeliness and comprehensiveness in vocabulary. The average similarity between the predicted results of Weibo personality dictionary and the results of the scale is 61.98%, which is close to the results of BFM algorithm,which can effectively predict users' personality.
目前,大多数人格特质预测研究主要采用合作方法,即利用量表收集用户的人格特质信息。这种方法主要存在主观性强、数量和质量有限、持久稳定性不足、需要用户配合等缺点。同时,主流方法采用监督学习的黑箱方法,属于数据驱动的方法,不具有可解释性。知识驱动字典方法有望解决这些问题,实现非合作人格预测。提出了一种基于知识库和语料库相结合的人格词典构建方法。另一方面,针对字典法人格分析中人格评分算法物理意义不明确的问题,本文提出了一种基于词汇权值和词频的人格评分算法。结果表明,该方法构建的人格词典能够保证词汇的及时性和全面性。实验结果表明,该方法构建的人格词典能够保证词汇的及时性和全面性。微博个性词典预测结果与量表结果的平均相似度为61.98%,接近BFM算法的预测结果,能够有效预测用户的个性。
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引用次数: 0
Comparison of Topology Expansion of Wearable Devices Based on IoT and SIoT Architecture 基于IoT和SIoT架构的可穿戴设备拓扑扩展比较
Pub Date : 2022-07-01 DOI: 10.1109/ICCSM57214.2022.00022
Kaizhe Ding
With the development of Internet of Things (IoT), wearable devices have gradually become popular, and different new network architectures have also been proposed. Social Internet of Things (SIoT) is a newly proposed architecture that allows devices to realize social-like self-selection and connection. This project is aimed at wearable devices, and uses the Erdös-Rényi (ER) random model and general random number generation methods to simulate the topology based on the IoT architecture and the SIoT architecture, and analyze the closeness centrality and degree centrality of the nodes in the topology and the overall. Finally, it is found that the topology based on the SIoT architecture is better than the topology based on the IoT architecture in terms of node and overall network expansion. This project can provide a certain reference for future distributed IoT network research.
随着物联网(IoT)的发展,可穿戴设备逐渐普及,不同的新型网络架构也被提出。社交物联网(Social Internet of Things, SIoT)是一种新提出的架构,它允许设备实现类似社交的自我选择和连接。本项目针对可穿戴设备,采用Erdös-Rényi (ER)随机模型和通用随机数生成方法,对基于IoT架构和SIoT架构的拓扑进行仿真,分析拓扑和整体中节点的紧密中心性和度中心性。最后,发现基于SIoT架构的拓扑在节点扩展和整体网络扩展方面优于基于IoT架构的拓扑。本课题可为未来分布式物联网网络的研究提供一定的参考。
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引用次数: 0
Deep Learning based FEA Surrogate for Sub-Sea Pressure Vessel 基于深度学习的水下压力容器有限元模拟
Pub Date : 2022-07-01 DOI: 10.1109/ICCSM57214.2022.00013
H. Vardhan, J. Sztipanovits
During the design process of an autonomous underwater vehicle (AUV), the pressure vessel has a critical role. The pressure vessel contains dry electronics, power sources, and other sensors that cannot be flooded. A traditional design approach for a pressure vessel design involves running multiple Finite Element Analysis (FEA) based simulations and optimizing the design to find the best suitable design which meets the requirement. Running these FEAs are computationally very costly for any optimization process and it becomes difficult to run even hundreds of evaluation. In such a case, a better approach is the surrogate design with the goal of replacing FEA-based prediction with some learning-based regressor. Once the surrogate is trained for a class of problem, then the learned response surface can be used to analyze the stress effect without running the FEA for that class of problem. The challenge of creating a surrogate for a class of problems is data generation. Since the process is computationally costly, it is not possible to densely sample the design space and the learning response surface on sparse data set becomes difficult. During experimentation, we observed that a Deep Learning-based surrogate outperforms other regression models on such sparse data. In the present work, we are utilizing the Deep Learning-based model to replace the costly finite element analysis-based simulation process. By creating the surrogate, we speed up the prediction on the other design much faster than direct Finite element Analysis. We also compared our DL-based surrogate with other classical Machine Learning (ML) based regression models (random forest and Gradient Boost regressor). We observed on the sparser data, the DL-based surrogate performs much better than other regression models.
在自主水下航行器(AUV)的设计过程中,压力容器具有至关重要的作用。压力容器中装有干燥的电子设备、电源和其他传感器,不能被水淹。传统的压力容器设计方法是运行多次基于有限元分析(FEA)的仿真和优化设计,以找到最适合的满足要求的设计。对于任何优化过程来说,运行这些FEAs在计算上都是非常昂贵的,即使运行数百次评估也变得非常困难。在这种情况下,更好的方法是代理设计,其目标是用一些基于学习的回归量取代基于有限元的预测。一旦针对一类问题训练了代理,那么学习到的响应面就可以用于分析应力效应,而无需对该类问题进行有限元分析。为一类问题创建代理的挑战在于数据生成。由于该过程计算量大,不可能对设计空间进行密集采样,并且在稀疏数据集上学习响应面变得困难。在实验过程中,我们观察到基于深度学习的代理在这种稀疏数据上优于其他回归模型。在目前的工作中,我们正在利用基于深度学习的模型来取代昂贵的基于有限元分析的仿真过程。通过创建代理,我们加快了对其他设计的预测,比直接有限元分析快得多。我们还将基于dl的代理与其他经典的基于机器学习(ML)的回归模型(随机森林和梯度增强回归器)进行了比较。我们观察到,在稀疏数据上,基于dl的代理比其他回归模型执行得好得多。
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引用次数: 9
Considering Multiple Stakeholders Perspectives for interval-based Goal Oriented Requirements Prioritization in agile development 考虑敏捷开发中基于区间的面向目标的需求优先级的多个涉众视角
Pub Date : 2022-07-01 DOI: 10.1109/ICCSM57214.2022.00010
Shaimaa Fadel, W. Abdelmoez, A. Saad
Addressing the importance of the requirements prioritization, recent research introduced ‘A value-based approach for reasoning with goal models’, which allows stakeholders to set an importance estimate for each element in a goal model, that relates the requirements with the business objectives. These estimates are then propagated by means of their relationships (dependencies, contributions and decompositions) to get a prioritized list of all requirements.In this paper, a methodology that extends the aforementioned technique is presented. It uses Goal Oriented Requirements Language (GRL) to prioritize requirements in an agile environment, taking into consideration the opinion of many Stakeholders. As the static value of the estimate is never accurate and does not give the stakeholders enough flexibility, the proposed methodology enables each stakeholder to provide for each requirement its importance as an estimated interval instead of a static value. Then, for each requirement the mean value of the estimation interval is calculated, the information asymmetry and confidence level per requirement are demonstrated, so that a prioritized list can then be generated. The analyst can choose to use the prioritized list based on one of these criteria. This methodology is demonstrated on a case study.
为了解决需求优先级的重要性,最近的研究引入了“基于价值的目标模型推理方法”,它允许涉众为目标模型中的每个元素设置一个重要性估计,将需求与业务目标联系起来。然后通过它们的关系(依赖性、贡献和分解)来传播这些估计,以获得所有需求的优先级列表。本文提出了一种扩展上述技术的方法。它使用面向目标的需求语言(GRL)在敏捷环境中对需求进行优先排序,并考虑到许多涉众的意见。由于估算的静态值从来都不准确,并且没有给涉众足够的灵活性,所建议的方法使每个涉众能够为每个需求提供其重要性的估计间隔,而不是静态值。然后,对每个需求计算估计区间的平均值,论证每个需求的信息不对称性和置信度,从而生成一个优先级列表。分析人员可以选择使用基于这些标准之一的优先级列表。该方法在一个案例研究中得到了演示。
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引用次数: 0
Parameter Test and Numerical Simulation of Dynamic Constitutive Model for 08F Steel 08F钢动态本构模型参数试验与数值模拟
Pub Date : 2022-07-01 DOI: 10.1109/ICCSM57214.2022.00015
Yuxin Jia, Wenzheng Ma, Dongxiao Fu
The dynamic compressive mechanical properties of 08F steel are numerically simulated by using quasi-static test and split Hopkinson pressure bar (SHPB) system, in order to improve the accuracy of finite element simulations in pulse shaper. The yield strength and Young's modulus of the material are determined by quasi-static compression test at the strain rate of 10-3s-1 the specimen size was Φ5 mm × 5 mm. The strain rate effect of the material is determined by split Hopkinson pressure bar (SHPB) system at the strain rates of 102 S-1 and 103 s-1, The Johnson-cook constitutive model parameters of 08F steel are analyzed and determined. PAM-CRASH is used to do numerical simulations with the deformation effect of 08F steel under four impact conditions. Compared with the actual test results, the numerically simulated results show that Johnson-cook constitutive simulation is suitable for the simulation of impact process of pulse shaper of 08F steel, which has obvious strain hardening property and strain rate sensitivity. The dynamic stress-strain curves is regressed based on the test results, which can be used as a reference for relevant research.
为了提高脉冲成形器有限元模拟的精度,采用准静态试验和分离式霍普金森压杆(SHPB)系统对08F钢的动态压缩力学性能进行了数值模拟。材料的屈服强度和杨氏模量采用准静态压缩试验,应变速率为10-3s-1,试样尺寸为Φ5 mm × 5mm。采用分离式霍普金森压杆(SHPB)系统研究了102s -1和103s -1应变速率下材料的应变速率效应,并对08F钢的Johnson-cook本构模型参数进行了分析和确定。采用PAM-CRASH软件对08F钢在四种冲击条件下的变形效果进行了数值模拟。数值模拟结果表明,Johnson-cook本构模拟适用于08F钢脉冲成形器冲击过程的模拟,具有明显的应变硬化性能和应变速率敏感性。根据试验结果对动态应力-应变曲线进行回归,可为相关研究提供参考。
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引用次数: 0
Using Dimensionality Reduction Techniques to Understand the Sources of Software Complexity 使用降维技术来理解软件复杂性的来源
Pub Date : 2022-07-01 DOI: 10.1109/ICCSM57214.2022.00009
B. Johnson, R. Simha
Despite significant work in the area of software complexity, there are still numerous unanswered questions about the sources and locations of complexity and its relationship to software design and programming language features. In this paper, we attempt to illuminate these questions by applying code-agnostic statistical dimensionality reduction techniques to a large dataset of 3000 popular open source Java programs.We analyze our set of projects to determine key attributes of Java program composition and complexity, using standard metrics from previous work. We apply two proven dimensionality reduction techniques, Principle Component Analysis (PCA) and t-Distributed Stochastic Neighbor Embedding (t-SNE) to explore the relationships between complexity models and program composition. We find support for three primary sources of Java software complexity and note that particular projects are most often associated primarily with one variety. Our results have potential implications for source code analysis and programming language design.
尽管在软件复杂性领域做了大量的工作,但是仍然有许多关于复杂性的来源和位置以及它与软件设计和编程语言特性的关系的未解问题。在本文中,我们试图通过将代码不可知的统计降维技术应用于3000个流行的开源Java程序的大型数据集来阐明这些问题。我们分析我们的项目集,以确定Java程序组成和复杂性的关键属性,使用来自以前工作的标准度量。我们应用了两种被证明的降维技术,主成分分析(PCA)和t分布随机邻居嵌入(t-SNE)来探索复杂性模型和程序组成之间的关系。我们发现对Java软件复杂性的三种主要来源的支持,并注意到特定的项目通常主要与一种类型相关联。我们的结果对源代码分析和编程语言设计有潜在的影响。
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引用次数: 0
Cyberattacks: Modeling, Analysis, and Mitigation 网络攻击:建模、分析和缓解
Pub Date : 2022-07-01 DOI: 10.1109/iccsm57214.2022.00021
Sara Abbaspour Asadollah
Industrial cybersecurity has risen as an important topic of research nowadays. The heavy connectivity by the Internet of Things (IoT) and the growth of cyberattacks against industrial assets cause this risen and attract attention to the cybersecurity field. While fostering current software applications and use-cases, the ubiquitous access to the Internet has also exposed operational technologies to new and challenging security threats that need to be addressed. As the number of attacks increases, their visibility decreases. An attack can modify the Cyber-Physical Systems (CPSs) quality to avoid proper quality assessment. They can disrupt the system design process and adversely affect a product’s design purpose.This working progress paper presents our approach to modeling, analyzing, and mitigating cyberattacks in CPS. We model the normal behavior of the application as well as cyberattacks with the help of Microsoft Security Development Lifecycle (SDL) and threat modeling approach (STRIDE). Then verify the application and attacks model using a model checking tool and propose mitigation strategies to decrease the risk of vulnerabilities. The results can be used to improve the system design to overcome the vulnerabilities.
工业网络安全已成为当今研究的一个重要课题。物联网(IoT)的大量连接和针对工业资产的网络攻击的增长导致这种情况上升,并引起了网络安全领域的关注。在促进当前软件应用程序和用例的同时,对Internet的无所不在的访问也使操作技术暴露于需要解决的新的和具有挑战性的安全威胁中。随着攻击数量的增加,它们的可见性会降低。攻击可以改变网络物理系统(cps)的质量,从而无法进行适当的质量评估。它们可以破坏系统设计过程,并对产品的设计目的产生不利影响。这篇工作进展论文介绍了我们在CPS中建模、分析和减轻网络攻击的方法。我们在Microsoft安全开发生命周期(SDL)和威胁建模方法(STRIDE)的帮助下,对应用程序的正常行为以及网络攻击进行建模。然后使用模型检查工具验证应用程序和攻击模型,并提出缓解策略以降低漏洞风险。研究结果可用于改进系统设计以克服这些漏洞。
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引用次数: 0
DevOps and IaC to Automate the Delivery of Hands-On Software Lab Exams DevOps和IaC自动交付动手操作的软件实验室考试
Pub Date : 2022-07-01 DOI: 10.1109/iccsm57214.2022.00012
Ahmad Sorour, A. Hamdy
During the recent COVID-19 outbreak, many educational institutions had to operate fully remotely and conduct examinations online. Conducting hands-on software lab exams online raises serious issues and concerns such as: 1) the heterogeneity of examinees’ personal computers, 2) the computers may not be powerful enough to run the required software for the hands-on exam, especially hardware intensive programs, 3) cheating and plagiarism are hardly controllable since examinees are using their personal computers and they can look up whatever information they need. The paper proposes a highly available and scalable software cloud architecture that utilizes modern cloud technologies, DevOps principles, and infrastructure as code tools of various categories to facilitate the construction of a highly available and scalable architectural solution that automates the delivery of software lab exams. Evaluation and results of the proposed architecture illustrate that a cloud instance that is preconfigured with all the required exam material can be instantiated and completely ready to use in an average of 149 seconds. Moreover, deploying the backend server on a Kubernetes Cluster allowed the system to automatically scale and handle sudden loads due to Kubernetes’ auto-scaling and self-healing features.
在最近的新冠肺炎疫情期间,许多教育机构不得不完全远程操作并在线进行考试。在线进行动手软件实验考试引起了一些严重的问题和关注,例如:1)考生个人电脑的异质性;2)计算机可能不够强大,无法运行动手考试所需的软件,特别是硬件密集型程序;3)由于考生使用个人电脑,他们可以查找任何他们需要的信息,因此作弊和抄袭很难控制。本文提出了一个高可用性和可伸缩的软件云架构,它利用现代云技术、DevOps原则和基础设施作为各种类别的代码工具,以促进高可用性和可伸缩的架构解决方案的构建,该解决方案可以自动化软件实验室考试的交付。所提议架构的评估和结果表明,预先配置了所有所需考试材料的云实例可以在平均149秒内实例化并完全准备好使用。此外,由于Kubernetes的自动扩展和自修复特性,将后端服务器部署在Kubernetes集群上允许系统自动扩展和处理突然的负载。
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引用次数: 0
期刊
2022 6th International Conference on Computer, Software and Modeling (ICCSM)
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