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2020 XLVI Latin American Computing Conference (CLEI)最新文献

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SECO-AM: An Approach for Maintenance of IT Architecture in Software Ecosystems SECO-AM:软件生态系统中IT架构维护的方法
Pub Date : 2020-10-01 DOI: 10.1109/CLEI52000.2020.00035
T. Lima, R. Santos, C. Werner
Systems used by an organization to achieve business objectives are supported by technologies included in its technological platform, creating a software ecosystem (SECO). Modifications on these technologies can lead essential systems to lose performance or support. Thus, IT managers and architects should pay attention while making changes by not only accounting for information on technologies, but also considering their relationships. Such information may be spread in different documents and also difficult to analyze mostly due to the organizational complexity and lack of tooling support. The purpose of this work is to assist IT managers and architects in making decisions as regards to IT architecture modification, i.e., the set of technologies that supports products and services of an organization. Firstly, critical factors for maintaining IT architecture were investigated through a systematic mapping and a survey research. As a result, an approach to support technology assessment and analysis was defined, exploring the network structure that represents the organization's ecosystem. A tool implementing the key features of the proposed approach was developed, including visualization of SECO networks and configuration of well-defined criteria. Finally, both the approach and tool were evaluated through a feasibility study on the technology and concepts acceptance within a specific, real scenario. A positive feedback on the approach's relevance and tool's resources was observed.
组织用于实现业务目标的系统由其技术平台中包含的技术支持,从而创建一个软件生态系统(SECO)。对这些技术的修改可能导致基本系统失去性能或支持。因此,IT经理和架构师在进行更改时应该注意,不仅要考虑技术上的信息,还要考虑它们之间的关系。这些信息可能分散在不同的文档中,而且由于组织的复杂性和缺乏工具支持,也难以分析。这项工作的目的是帮助IT经理和架构师做出关于IT架构修改的决策,例如,支持组织的产品和服务的技术集。首先,通过系统测绘和调查研究,探讨了维护IT体系结构的关键因素。因此,一种支持技术评估和分析的方法被定义,探索代表组织生态系统的网络结构。开发了一种实现所提出方法关键特征的工具,包括SECO网络的可视化和定义良好的标准的配置。最后,通过对技术和概念在特定真实场景中的可接受性进行可行性研究,对方法和工具进行了评估。观察到对方法的相关性和工具资源的积极反馈。
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引用次数: 1
MPLG: Mapping the Professional Life of Computer Graduates MPLG:绘制计算机毕业生的职业生涯
Pub Date : 2020-10-01 DOI: 10.1109/CLEI52000.2020.00069
Reinaldo Viana Alvares, Henrique Soares Rodrigues, Marcelo Loutfi, Nathielly de Souza Campos
Several Brazilian citizens are aiming to invest in higher education in computing. From the perspective of the formal mark, the financial feedback is what normally motivates a degree in Computing in Brazil. At the same time, Higher Education Institutions usually support entrepreneurial initiatives with their students. This work investigates the insertion of graduates of Information Systems from the Brazilian public university, both in the formal national labor market, as well as in the entrepreneur, seeking to know if the graduate has his own business or if he is a partner in a national company. For this, an information system was developed, designed and used to recover this information and generate indicators of interest.
一些巴西公民打算投资计算机高等教育。从正式标志的角度来看,在巴西,财务反馈通常是攻读计算机学位的动力。与此同时,高等教育机构通常支持学生的创业计划。这项工作调查了巴西公立大学信息系统专业毕业生在正式的国家劳动力市场和企业家中的插入情况,试图了解毕业生是否拥有自己的企业,或者他是否是一家国有公司的合伙人。为此,开发、设计和使用了一个信息系统来恢复这些信息并产生感兴趣的指标。
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引用次数: 0
Collaborative Sensors Networks for Structural Health Monitoring of Bridges in Costa Rica 哥斯达黎加桥梁结构健康监测的协同传感器网络
Pub Date : 2020-10-01 DOI: 10.1109/CLEI52000.2020.00055
Anibal Ruiz-Barquero, C. Garita, Giannina Ortiz
The condition of road infrastructure in countries like Costa Rica, combined with natural disasters related to rain, floods, and other natural events, makes the proper management of bridge structures a specially sensitive issue for national institutions. This situation creates the need to monitor the health of bridge structures in order to anticipate or avoid a collapse caused either by a failure of a bridge component or by an environmental threat. In this context, the research described in this article aims at the design and implementation of a prototype of a network of collaborative sensors to monitor the condition of bridges in Costa Rica, in order to support the prevention of negative effects caused by natural disasters and in particular by an increase in the water level of the river under a bridge. This article describes the analysis, design, implementation, and testing process of a collaborative sensor network system that meets the requirements to monitor and alert in emergency situations associated with bridge-type structures.
哥斯达黎加等国的道路基础设施状况,加上与降雨、洪水和其他自然事件有关的自然灾害,使桥梁结构的适当管理成为国家机构特别敏感的问题。这种情况产生了监测桥梁结构健康状况的需要,以便预测或避免由桥梁部件失效或环境威胁引起的倒塌。在这种情况下,本文中描述的研究旨在设计和实现一个协作传感器网络的原型,以监测哥斯达黎加桥梁的状况,以支持预防自然灾害造成的负面影响,特别是由桥下河流水位上升造成的负面影响。本文介绍了一种满足桥型结构紧急情况监测预警需求的协同传感器网络系统的分析、设计、实现和测试过程。
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引用次数: 1
Real-Time Violence Detection in Videos Using Dynamic Images 使用动态图像的视频中的实时暴力检测
Pub Date : 2020-10-01 DOI: 10.1109/CLEI52000.2020.00065
Ademir Rafael Marques Guedes, Guillermo Cámara Chávez
The problem of violence detection consists of identifying scenes that characterize violence in a video stream. The violent actions in question can be of the most diverse, from fights, pushes, and robberies to shots and explosions. Detecting the presence of violence is useful for classifying videos and films, blocking inappropriate content for specific audiences, and improving security personnel's performance responsible for areas under surveillance. This work proposes an approach based on the Dynamic Images method, using handcrafted and CNN features the Bag of Visual Words paradigm and a SVM classifier to detect violent actions that involve corporal struggle in the video streams of databases of literature. The proposed methods can achieve an average accuracy of 97.50% for the Hockey dataset, 99.80% for the Movies dataset, and 93.40% for the Crowd dataset. Besides, the identification of violence in each video was performed in of hundredths of a second. Also, the techniques proposed in this work have the advantage that they can be applied even in environments where computational resources are limited, and technologies such as GPU or parallel processing are not available.
暴力检测的问题包括识别视频流中具有暴力特征的场景。所讨论的暴力行为可以是多种多样的,从打架、推搡、抢劫到枪击和爆炸。检测暴力的存在有助于对视频和电影进行分类,阻止针对特定受众的不适当内容,以及提高负责监视区域的安全人员的表现。这项工作提出了一种基于动态图像方法的方法,使用手工制作和CNN特征的视觉词袋范式和支持向量机分类器来检测文学数据库视频流中涉及身体斗争的暴力行为。本文提出的方法对Hockey数据集的平均准确率为97.50%,对Movies数据集的平均准确率为99.80%,对Crowd数据集的平均准确率为93.40%。此外,每个视频中的暴力识别在百分之一秒内完成。此外,在这项工作中提出的技术有一个优点,即它们甚至可以应用于计算资源有限的环境中,并且GPU或并行处理等技术不可用。
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引用次数: 1
Cloud Function Performance: A Component Modeling Approach 云功能性能:一种组件建模方法
Pub Date : 2020-10-01 DOI: 10.1109/CLEI52000.2020.00030
Martín Flores-González, Ignacio Trejos-Zelaya
Cloud Functions represent a new trend in cloud computing in which developers are allowed to install code in a Function-as-a-Service (FaaS) platform able to manage provisioning, execution, monitoring and automatic scaling. The underlying infrastructure in FaaS platforms is hidden from the developers and designers and, since the influence of the infrastructure is unknown, this makes it difficult to apply software performance engineering approaches on cloud functions, which could lead to wrong or inaccurate performance estimations. In this study, we explore the use of component-based modeling and simulation in order to generate performance estimations of an exemplar cloud function which was exercised using a variety of workloads. A cloud function was both implemented and instrumented to record in a log file performance data, associated with its invocations and, using the log file as an input, we extracted a performance model in a Palladio Component Model format suitable for running simulations to validate whether the generated model could explain the runtime behavior of the function. Using this approach and further tunings in the model, we were able to validate that the simulations could explain more than 95% of the function's behavior and that component-based modeling and simulation can be considered a serious option when trying to explain the behavior of a cloud function.
云功能代表了云计算的新趋势,开发人员可以在功能即服务(FaaS)平台上安装代码,该平台能够管理供应、执行、监控和自动扩展。FaaS平台中的底层基础设施对开发人员和设计人员是隐藏的,由于基础设施的影响是未知的,这使得很难将软件性能工程方法应用于云功能,这可能导致错误或不准确的性能估计。在本研究中,我们探索了基于组件的建模和仿真的使用,以便生成使用各种工作负载执行的示例云功能的性能估计。我们实现并检测了一个云函数,以便在日志文件中记录与其调用相关的性能数据,并使用日志文件作为输入,以适合运行模拟的Palladio Component model格式提取性能模型,以验证生成的模型是否可以解释该函数的运行时行为。使用这种方法和模型的进一步调优,我们能够验证模拟可以解释超过95%的函数行为,并且在试图解释云功能的行为时,基于组件的建模和模拟可以被认为是一个严肃的选择。
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引用次数: 0
Detection and Counting of Lemons using Artificial Vision and Tracking Techniques for Real Time Harvest Estimation 基于人工视觉和跟踪技术的柠檬检测与计数实时收获估计
Pub Date : 2020-10-01 DOI: 10.1109/CLEI52000.2020.00064
S. Serafino, Lucas Benjamín Cicerchia, Gabriel Pérez, Sebastian Adorno, Agustín Balmer
Nowadays, estimating the amount of fruit harvested is an important process for a farmer, providing a significant tool for making decisions about production. This work aims to automate the counting of lemons in real time during the harvesting process, using low processing vision equipment and low resolution cameras mounted on a lemon harvester. Different techniques were used, such as color-based image processing, vegetation and contrast index, mathematical morphology and object tracking based on the Kuhn-Munkres algorithm. To evaluate the performance of the algorithm, six harvest videos with a resolution of 640x480 pixels were tested, resulting in a success rate of over 95% between the visual count and the count provided by the algorithm.
如今,估计收获的水果数量对农民来说是一个重要的过程,为生产决策提供了一个重要的工具。这项工作旨在使用安装在柠檬收割机上的低处理视觉设备和低分辨率摄像机,在收获过程中实时自动计数柠檬。使用了不同的技术,如基于颜色的图像处理,植被和对比度指数,数学形态学和基于Kuhn-Munkres算法的目标跟踪。为了评估算法的性能,我们测试了6个分辨率为640x480像素的收获视频,结果显示视觉计数和算法提供的计数之间的成功率超过95%。
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引用次数: 1
Explicit and implicit join point designation in aspect-oriented business modeling 面向方面业务建模中的显式和隐式连接点指定
Pub Date : 2020-10-01 DOI: 10.1109/CLEI52000.2020.00029
Fernando Pinciroli
The aspect-oriented paradigm can be applied at different stages of the software development lifecycle. Its use in the business modeling phase does not have a large number of proposals, and existing ones only cover the part of requirements engineering known as “requirements development”, regardless of “requirements management” practices. Additionally, most of these proposals do not use standard notations. For this reason, in this article we propose a modeling technique that allows the implicit designation of join points to support business requirements management, in addition to adapting the explicit form in a way that is strictly based on BPMN 2.0, the OMG's standard notation.
面向方面的范例可以应用于软件开发生命周期的不同阶段。它在业务建模阶段的使用没有大量的建议,并且现有的建议只涵盖了称为“需求开发”的需求工程部分,而不考虑“需求管理”实践。此外,大多数提案都不使用标准符号。出于这个原因,在本文中,我们提出了一种建模技术,除了以严格基于BPMN 2.0 (OMG的标准符号)的方式调整显式形式外,还允许隐式指定连接点以支持业务需求管理。
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引用次数: 0
A Multiscale Morphological Method for Visible and Infrared Images Fusion 可见光与红外图像融合的多尺度形态学方法
Pub Date : 2020-10-01 DOI: 10.1109/CLEI52000.2020.00063
Julio César Mello Román, José Luis Vázquez Noguera, H. Legal-Ayala
Infrared images (IR) help us to detect hidden targets in the environment, according to the radiation they emit. These work well on the day, at night and in weather conditions such as rain or fog. At the same time, visible images (VIS) provide us with good details of the scenes, which are better perceived by the human eye. Therefore, the fusion of an infrared image and a visible image of the same scene is very useful. In this paper, we propose a fusion method of visible and infrared images using a multiscale morphological approach. First, the base image is generated through the fusion of the two source images. Second, multiple bright and dark features are extracted from each source image by the top-hat transform. Third, the multiple bright and dark scales of the source images are fused. Finally, the fusion of the visible and infrared images is obtained by adding to the base image the maximum values obtained in the previous step. The results show that the proposed method is competitive compared to state-of-the-art methods in terms of contrast, brightness, texture and spatial information.
红外图像(IR)根据它们发出的辐射帮助我们探测环境中隐藏的目标。这些在白天、晚上以及下雨或大雾等天气条件下都能很好地工作。同时,可视图像(VIS)为我们提供了场景的良好细节,这些细节更容易被人眼感知。因此,对同一场景的红外图像和可见光图像进行融合是非常有用的。本文提出了一种基于多尺度形态学的可见光和红外图像融合方法。首先,将两幅源图像融合生成基图像。其次,通过顶帽变换从每个源图像中提取多个明暗特征;第三,对源图像的多个明暗尺度进行融合。最后,将上一步得到的最大值加到基图上,实现可见光图像与红外图像的融合。结果表明,该方法在对比度、亮度、纹理和空间信息等方面优于现有方法。
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引用次数: 0
Analysis of Crime Perceptions in Montevideo 蒙得维的亚犯罪认知分析
Pub Date : 2020-10-01 DOI: 10.1109/CLEI52000.2020.00016
Sara Perera, Libertad Tansini
This article analyses an original crime data set from Montevideo, Uruguay's capital city, in 2019. The data was collected from various sources: News Web Portals, for example El Observador, Teledoce, El País and MontevideoCOMM; mobile phone applications in which users report crimes such as CityCop; and Official Data from Home Office annual reports, that despite being an open data set, it is not easily consumable. Our main objective is to study the relationship between the perception of CitiCop users through reported crimes, media perception as presented in News Web Portals and Official Data which is of public domain. Geostatistical techniques are applied to analyse similarities and differences between the three perceptions previously described. Results show interesting coincidences and dissents.
本文分析了 2019 年乌拉圭首都蒙得维的亚的原始犯罪数据集。数据收集自多个来源:新闻门户网站,如 El Observador、Teledoce、El País 和 MontevideoCOMM;用户举报犯罪的手机应用程序,如 CityCop;以及来自内政部年度报告的官方数据,尽管这些数据是开放数据集,但并不容易使用。我们的主要目标是研究 CitiCop 用户通过举报犯罪所产生的感知、新闻门户网站上的媒体感知以及公共领域的官方数据之间的关系。我们采用了地理统计技术来分析上述三种认知之间的异同。结果显示了有趣的巧合和差异。
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引用次数: 0
A discrete proposal for modelling the infectious diseases expansion 传染病扩展模型的离散化建议
Pub Date : 2020-10-01 DOI: 10.1109/CLEI52000.2020.00047
Antonio Cortés Castillo
This paper presents a new way to approach the dynamics of the infectious diseases expansion by means of a discrete space-time framework. A square grid represents the whole population and the links between the individuals (cell) are fixed by a connectivity pattern. This proposal lies in three points, a new neighborhood which is faster than the well-known Von Neumann and Moore neighborhoods, a set of local Boolean rules that define of the contacts between the neighborhood cells and a multi-grid implementation to cope with the delays between the sub-processes of the entire disease expansion. The main objective of this paper is modelling the different behaviors observed when solving the ordinary differential equations (ODE) of the Susceptible-Infectious-Recovered (SIR) and Susceptible-Infectious-Susceptible (SIS) models. Some real-world cases such as Influenza and Gastroenteritis are successfully modelled by our approach. This work contributes to draw equivalences between two conceptually different models and highlights that they give similar results by appropriately taking the parameter values.
本文提出了一种用离散时空框架来研究传染病扩散动力学的新方法。正方形网格表示整个种群,个体(细胞)之间的连接通过连接模式固定。该方案包括三个方面:一个比Von Neumann和Moore邻域更快的新邻域;一组定义邻域细胞之间接触的局部布尔规则;一个多网格实现来应对整个疾病扩展子过程之间的延迟。本文的主要目的是模拟在求解易感-感染-恢复(SIR)和易感-感染-易感(SIS)模型的常微分方程(ODE)时观察到的不同行为。我们的方法成功地模拟了一些现实世界的病例,如流感和肠胃炎。这项工作有助于在两个概念不同的模型之间绘制等价,并强调它们通过适当地取参数值给出相似的结果。
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引用次数: 0
期刊
2020 XLVI Latin American Computing Conference (CLEI)
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