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Journal of the Brazilian Computer Society最新文献

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Usability evaluation model of an application with emphasis on collaborative security: an approach from social dimensions 一个强调协作安全的应用程序的可用性评估模型：一种来自社会维度的方法
Journal of the Brazilian Computer Society Pub Date : 2021-02-23 DOI: 10.1186/s13173-021-00108-8
Mateus de Oliveira, A. Mattedi, R. D. Seabra
{"title":"Usability evaluation model of an application with emphasis on collaborative security: an approach from social dimensions","authors":"Mateus de Oliveira, A. Mattedi, R. D. Seabra","doi":"10.1186/s13173-021-00108-8","DOIUrl":"https://doi.org/10.1186/s13173-021-00108-8","url":null,"abstract":"","PeriodicalId":39760,"journal":{"name":"Journal of the Brazilian Computer Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s13173-021-00108-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48533574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A stochastic modeling approach for traffic analysis of a tramway system with virtual tags and local positioning 基于虚拟标签和局部定位的有轨电车系统交通分析随机建模方法
Journal of the Brazilian Computer Society Pub Date : 2021-02-12 DOI: 10.1186/s13173-021-00105-x
Leandro Dias da Silva, Paolo Lollini, Diamantea Mongelli, Andrea Bondavalli, Gianluca Mandò
{"title":"A stochastic modeling approach for traffic analysis of a tramway system with virtual tags and local positioning","authors":"Leandro Dias da Silva, Paolo Lollini, Diamantea Mongelli, Andrea Bondavalli, Gianluca Mandò","doi":"10.1186/s13173-021-00105-x","DOIUrl":"https://doi.org/10.1186/s13173-021-00105-x","url":null,"abstract":"Traditional solutions for tramway interlocking systems are based on physical sensors (balizes) distributed along the infrastructure which detect passing of the trams and trigger different actions, like the communications with the ground infrastructure and the interlocking system. This approach is not easily scalable and maintainable, and it is costly. The SISTER project designed new architectural solutions for addressing the previous problems based on the virtualization of the sensors and on the local positioning of each tram. The key idea is to trigger actions when the computed local position corresponds to a virtual tag. However, the computed position can be affected by errors, compared to the real one. Therefore, it is important to understand the impact of these new solutions on the traffic that can be supported by the tramway network. This paper presents a stochastic modeling approach for analysing the performability of a tramway system based on the SISTER architectural solutions, aiming to identify the parts of the tramway network that are more critical and sensible to the variation of the traffic conditions and to the setting of the key architectural parameters. We build a model using Stochastic Activity Networks and run sensitivity analyses on (i) the accuracy of the positioning, (ii) the different SISTER parameters, and (iii) considering possible outages temporarily blocking the journey of a tram. This analysis allows to properly set and fine-tune the key architectural parameters, to understand the impact of the accuracy on the positioning, to understand the impact of the outages.","PeriodicalId":39760,"journal":{"name":"Journal of the Brazilian Computer Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138514942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
James Monteith: Cartographer, Educator, and Master of the Margins 詹姆斯·蒙蒂思:制图师、教育家和边缘大师
Journal of the Brazilian Computer Society Pub Date : 2021-02-08 DOI: 10.14714/CP97.1671
Andrew Rhodes
{"title":"James Monteith: Cartographer, Educator, and Master of the Margins","authors":"Andrew Rhodes","doi":"10.14714/CP97.1671","DOIUrl":"https://doi.org/10.14714/CP97.1671","url":null,"abstract":"James Monteith (1831–1890) was a leading figure in American geography education in the late nineteenth century, but his career has been largely forgotten and his contribution to cartography has been underappreciated. Monteith’s maps and geography textbooks were targeted at the general reader, but included innovative ways to highlight comparative spatial relationships. Much of the text in Monteith’s books is typical of that found in other works of the period, but his geography volumes included unique illustrations to help the reader visualize terrain on a continental scale and place individual maps in a global context. Monteith produced fairly pedestrian maps in his books but surrounded them with remarkable symbology and amplifying data that ought perhaps to earn him the title “master of the margins.”","PeriodicalId":39760,"journal":{"name":"Journal of the Brazilian Computer Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41547783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A blockchain-based service for inviolable presence registration of mobile entities 一种基于区块链的服务，用于移动实体的不可侵犯存在注册
Journal of the Brazilian Computer Society Pub Date : 2021-01-21 DOI: 10.1186/s13173-021-00104-y
Matheus Leal, Flávia Pisani, Markus Endler
{"title":"A blockchain-based service for inviolable presence registration of mobile entities","authors":"Matheus Leal, Flávia Pisani, Markus Endler","doi":"10.1186/s13173-021-00104-y","DOIUrl":"https://doi.org/10.1186/s13173-021-00104-y","url":null,"abstract":"Several applications can benefit from recording information about the places a mobile entity visits and the length of time it spends there (e.g., shoppers, employees, buses, portable equipment, autonomous robots). This paper presents our approach to recording spatio-temporal presence information in a secure and inviolable way using a Distributed Ledger Technology. We implemented this solution as a middleware service that uses Complex Event Processing on smartphones to record beacon-smartphone proximity data in a blockchain efficiently. We have built upon the previous version of our service to include access control to the stored information. We analyzed the impact of this addition on the service’s performance and observed that it introduced very little overhead while significantly increasing user privacy. Furthermore, we compared the effect of using different blockchain technologies on overall service performance and characterized scenarios where using either IoTeX or Ethereum can be suitable for this type of application.","PeriodicalId":39760,"journal":{"name":"Journal of the Brazilian Computer Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138514963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Review of Women in American Cartography: An Invisible Social History 美国地图学中的女性:一段看不见的社会史
Journal of the Brazilian Computer Society Pub Date : 2021-01-09 DOI: 10.14714/CP97.1701
J. Johnson
{"title":"Review of Women in American Cartography: An Invisible Social History","authors":"J. Johnson","doi":"10.14714/CP97.1701","DOIUrl":"https://doi.org/10.14714/CP97.1701","url":null,"abstract":"","PeriodicalId":39760,"journal":{"name":"Journal of the Brazilian Computer Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44133050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Bending Lines: Maps and Data from Distortion to Deception 弯曲的线条:从扭曲到欺骗的地图和数据
Journal of the Brazilian Computer Society Pub Date : 2020-12-24 DOI: 10.14714/cp96.1689
Garrett Dash Nelson
{"title":"Bending Lines: Maps and Data from Distortion to Deception","authors":"Garrett Dash Nelson","doi":"10.14714/cp96.1689","DOIUrl":"https://doi.org/10.14714/cp96.1689","url":null,"abstract":"Bending Lines – Nelson | 51 © by the author(s). This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0. Garrett Dash Nelson (he/him) Leventhal Map & Education Center at the Boston Public Library gnelson@leventhalmap.org Bending Lines: Maps and Data from Distortion to Deception","PeriodicalId":39760,"journal":{"name":"Journal of the Brazilian Computer Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49211225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Florence: a Web-based Grammar of Graphics for Making Maps and Learning Cartography 佛罗伦萨:用于制作地图和学习制图的基于网络的图形语法
Journal of the Brazilian Computer Society Pub Date : 2020-12-02 DOI: 10.14714/cp96.1645
A. Poorthuis, Lucas van der Zee, Grace Guo, Jo Hsi Keong, Bianchi Dy
{"title":"Florence: a Web-based Grammar of Graphics for Making Maps and Learning Cartography","authors":"A. Poorthuis, Lucas van der Zee, Grace Guo, Jo Hsi Keong, Bianchi Dy","doi":"10.14714/cp96.1645","DOIUrl":"https://doi.org/10.14714/cp96.1645","url":null,"abstract":"To address these challenges, we introduce a JavaScript-based open-source framework for web-based cartography and data visualization. It is built on top of existing open web standards that are already in intensive use for online mapmaking today, but provides a framework that is firmly based on cartographic and visualization theory rather than software engineering concepts. Specifically, we adopt concepts from Bertin’s Semiology of Graphics and Wilkinson’s Grammar of Graphics to create a language with a limited number of core concepts and verbs that are combined in a declarative style of “writing” visualizations. In this paper, we posit a series of design guidelines that have informed our approach, and discuss how we translate these tenets into a software implementation and framework with specific use cases and examples. We frame the development of the software and the discussion specifically in the context of the use of such tools in cartography education.","PeriodicalId":39760,"journal":{"name":"Journal of the Brazilian Computer Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44602489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
User-centered Design and Evaluation of a Geovisualization Application Leveraging Aggregated QS Data 利用聚合QS数据的地理可视化应用程序的以用户为中心的设计和评估
Journal of the Brazilian Computer Society Pub Date : 2020-11-29 DOI: 10.14714/cp96.1631
J. Nelson, A. MacEachren
{"title":"User-centered Design and Evaluation of a Geovisualization Application Leveraging Aggregated QS Data","authors":"J. Nelson, A. MacEachren","doi":"10.14714/cp96.1631","DOIUrl":"https://doi.org/10.14714/cp96.1631","url":null,"abstract":"Individual movement traces recorded by users of activity tracking applications such as Strava provide opportunities that extend beyond delivering personal value or insight to the individual who engages in these “quantified-self ” (QS) activities. The large volumes of data generated by these individuals, when aggregated and anonymized, can be used by city planners, Departments of Transportation, advocacy groups, and researchers to help make cities safer and more efficient. This opportunity, however, is constrained by the technical skills and resources available to those tasked with assessing bicycling behavior in urban centers. This paper aims to address the question of how to design cartographic interfaces to serve as mediated platforms for making large amounts of individual bicycling data more accessible, usable, and actionable. Principles of cartographic representation, geovisual analytics techniques, and best practices in user interface/experience design are employed to arrive at an effective visualization tool for a broad urban planning audience. We use scenario-based design methods to encapsulate knowledge of map use practice gleaned from the development process, and conduct a post-implementation two-part user study with seven domain experts to further assess the usability and utility of the interactive mapping tool.","PeriodicalId":39760,"journal":{"name":"Journal of the Brazilian Computer Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48990917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Review of Mapping Indigenous Land: Native Land Grants in Colonial New Spain 土著土地测绘综述:新西班牙殖民地的土著土地授予
Journal of the Brazilian Computer Society Pub Date : 2020-11-16 DOI: 10.14714/cp97.1677
J. Seemann
{"title":"Review of Mapping Indigenous Land: Native Land Grants in Colonial New Spain","authors":"J. Seemann","doi":"10.14714/cp97.1677","DOIUrl":"https://doi.org/10.14714/cp97.1677","url":null,"abstract":"","PeriodicalId":39760,"journal":{"name":"Journal of the Brazilian Computer Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47201338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Normalizing the Normal Map 规范化法线贴图
Journal of the Brazilian Computer Society Pub Date : 2020-11-12 DOI: 10.14714/cp96.1669
Charles A. Preppernau
{"title":"Normalizing the Normal Map","authors":"Charles A. Preppernau","doi":"10.14714/cp96.1669","DOIUrl":"https://doi.org/10.14714/cp96.1669","url":null,"abstract":"Before becoming a cartographer, I made 3D graphics and animations. My favorite projects were those where I had to achieve my goals by using the tools available to me in ways that were very different from their intended purpose. As a cartographer, I’ve continued borrowing and “misusing” tools from computer graphics, especially the normal map. The more I use normal maps in cartography, the more I feel that they should be considered a common tool in both cartographic representation and GIS analyses. Unfortunately, up until recently there has been little mention of them in cartographic communities or scientific literature. I’d like to help popularize their misuse. Readers may already be familiar with the aspect-slope map (Figure 1), which represents surface orientation using two angular measurements. A normal map is the linear coordinate version of an aspect-slope map; it represents surface orientation using a type of 3D vector called a surface normal.","PeriodicalId":39760,"journal":{"name":"Journal of the Brazilian Computer Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49029720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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