Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems最新文献_第3页

Accessibility of mobile applications: evaluation by users with visual impairment and by automated tools 移动应用程序的可访问性:由视觉障碍用户和自动化工具进行评估

Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems Pub Date : 2020-10-26 DOI: 10.1145/3424953.3426633

Delvani Antônio Mateus, C. A. Silva, M. Eler, A. P. Freire

{"title":"Accessibility of mobile applications: evaluation by users with visual impairment and by automated tools","authors":"Delvani Antônio Mateus, C. A. Silva, M. Eler, A. P. Freire","doi":"10.1145/3424953.3426633","DOIUrl":"https://doi.org/10.1145/3424953.3426633","url":null,"abstract":"Providing accessible mobile applications to people with visual disabilities demands appropriate evaluation techniques and tools to identify problems during the design of such systems. Automated accessibility evaluation tools are important to support evaluation tasks and to make evaluators more productive to perform repetitive analyses. However, automated tools cannot find alone all problems that users encounter in accessibility evaluations of mobile applications. Despite previous investigations on the coverage of accessibility problems encountered by automated tools on websites, there is little knowledge about the relationship between the problems encountered by those tools and problems faced by users with visual impairments in mobile applications. This paper presents a study comparing issues encountered by the automated tools MATE (Mobile Accessibility Testing) and Accessibility Scanner with a set of 415 instances of accessibility problems encountered in a previous user study involving six blind and five partially-sighted users on four mobile applications. The results showed that 36 types of problems were encountered only by users, tree types of problems were encountered both by users and by the tools, and 11 types of problems were encountered only by the automated tools. The results show the kinds of relevant problems that automated tools can identify, aiding in the early identification of such problems. The study also contributes to determining the types of problems that are only encountered by evaluations with users, reinforcing the importance of involving users in accessibility evaluation and characterizing the problems in mobile applications that can go unnoticed if automated tools are used alone.","PeriodicalId":102113,"journal":{"name":"Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130809419","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: 12

How colored passwords can improve the usability of coercion-resistant internet voting systems 彩色密码如何提高抗强制互联网投票系统的可用性

Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems Pub Date : 2020-10-26 DOI: 10.1145/3424953.3426555

Matheus O. L. de Sá, Roberto Araújo, Alberto C. Lima Sobrinho, A. Neto, Gabriela S. Maximino, Jacques Traoré

{"title":"How colored passwords can improve the usability of coercion-resistant internet voting systems","authors":"Matheus O. L. de Sá, Roberto Araújo, Alberto C. Lima Sobrinho, A. Neto, Gabriela S. Maximino, Jacques Traoré","doi":"10.1145/3424953.3426555","DOIUrl":"https://doi.org/10.1145/3424953.3426555","url":null,"abstract":"Coercion is an inherent problem of any Internet election. Because there is no voting booth to protect the voter while she is voting, a coercer can easily influence them to choose his candidates. In order to mitigate these problems, coercion-resistant voting protocols employ the idea of voting credentials. Voters use their legitimate credentials to authorize the corresponding votes that will appear in the final tally. When voters are under coercion, they use fake credentials to deceive adversaries about their true vote intention. Credentials, however, are usually composed of large numeric values and have low usability to be used in real world elections. As a result, voters can incorrectly manage them and thus undermine the coercion-resistance. In this context, this work proposes a novel method to improve the credential usability called colored passwords. The new method is based on a known password technique and abstracts the numeric value of the credential. To show the application of the novel method, this work also applies the new method to a coercion-resistant voting system.","PeriodicalId":102113,"journal":{"name":"Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130893379","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

Practice-centered HCI: teaching in undergraduate computing courses in Brazil 以实践为中心的HCI:巴西计算机本科课程教学

Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems Pub Date : 2020-10-26 DOI: 10.1145/3424953.3426487

T. G. Guimarães, R. Prates

引用次数: 5

On the study of visual exploration vs. educational levels using an automated cancellation test 关于视觉探索与教育水平的研究使用自动取消测试

Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems Pub Date : 2020-10-26 DOI: 10.1145/3424953.3426643

Suzane Santos dos Santos, E. M. Campos, Paulo A. Nogueira Figueiro, Fernando A. Ramos Pontes, N. Neto, M. Mota

引用次数: 0

PersonAut PersonAut

Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems Pub Date : 2020-10-26 DOI: 10.1145/3424953.3426651

Aurea Melo, Luis Rivero, J. Santos, R. Barreto

引用次数: 5

Beauty tech nails: towards interaction and functionality 美容科技美甲:走向互动性和功能性

Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems Pub Date : 2020-10-26 DOI: 10.1145/3424953.3426549

A. S. F. Araújo, K. Vega, Thais Castro, Bruno F. Gadelha

引用次数: 1

System for identifying pests and diseases in soybean crop through natural language 基于自然语言的大豆病虫害识别系统

Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems Pub Date : 2020-10-26 DOI: 10.1145/3424953.3426540

Carolinne Roque e Faria, C. Barbosa

引用次数: 1

Investigating the integration of user values with design rationale and its effects on HCI design artifacts 调查用户价值与设计原理的整合及其对HCI设计工件的影响

Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems Pub Date : 2020-10-26 DOI: 10.1145/3424953.3426488

Bianca Rodrigues Teixeira, Simone Diniz Junqueira Barbosa

{"title":"Investigating the integration of user values with design rationale and its effects on HCI design artifacts","authors":"Bianca Rodrigues Teixeira, Simone Diniz Junqueira Barbosa","doi":"10.1145/3424953.3426488","DOIUrl":"https://doi.org/10.1145/3424953.3426488","url":null,"abstract":"User values are a significant part of designing software, but are not always considered the main focus. When performing decision-making activities, user values can get lost among the designers' own biases. This work studies the integration of user values with a design rationale technique, namely Questions, Options, and Criteria (QOC), and also how this integration reflects on a resulting design artifact (a MoLIC interaction diagram). We performed two separate studies with Computer Science students in Rio de Janeiro. We found that user values can be integrated into design rationale using different notations, such as highlighting the values (through circling or underlining) stated in the options or criteria. The decisions made with the QOC method using user values did result in relevant impacts on MoLIC diagrams. Participants who designed for a persona with strong values had richer results than those who used a \"generic\" persona. In a second study, we found that designers can recognize when user values are embedded into design artifacts. These results are encouraging to continue research regarding user values, with possibilities of developing new methods or updating existing techniques and notations such as QOC or MoLIC to support user values.","PeriodicalId":102113,"journal":{"name":"Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127008000","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

Analyzing the socioenactive dimensions of creative learning environments with preschool children 学龄前儿童创造性学习环境的社会活动维度分析

Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems Pub Date : 2020-10-26 DOI: 10.1145/3424953.3426510

Marleny Luque Carbajal, M. Cecília C. Baranauskas

{"title":"Analyzing the socioenactive dimensions of creative learning environments with preschool children","authors":"Marleny Luque Carbajal, M. Cecília C. Baranauskas","doi":"10.1145/3424953.3426510","DOIUrl":"https://doi.org/10.1145/3424953.3426510","url":null,"abstract":"Several published papers discuss how to encourage creativity in the classroom. An emerging concept is creative learning, which attempts to understand, experiment, and define methodologies and learning environments designed to promote creativity. Enaction theorists, a new thread of cognitive science, understand that cognition and creativity always emerge through real-time interaction with the environment and other agents in that environment. Socioenactive systems are extensions to the enactive system concept, bringing attention to socio-cultural values in the dynamic coupling of the human (through the body senses) and technology. This work aims to explore and understand the creative process of preschool children during their interaction with a tangible programming environment (TaPrEC+mBot) that allows programming of a robot car by arranging wooden blocks. The analysis draws on the physical, digital, and social dimensions of socioenactive systems. The results show that the children felt especially involved through their bodies and engaged in the activity of creating their own programming scenario. They also suggest that the children's reasoning and behavior seem to be connected or influenced by their body movements and their physical, social and digital experience and interaction with the tangible programming environment.","PeriodicalId":102113,"journal":{"name":"Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems","volume":"8 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126120762","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: 5

Exploring user profiles based on their explainability requirements in interactive systems 在交互式系统中，根据用户的可解释性需求探索用户配置文件

Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems Pub Date : 2020-10-26 DOI: 10.1145/3424953.3426545

Henrique Louzada, Gabriel Chaves, Lesandro Ponciano

{"title":"Exploring user profiles based on their explainability requirements in interactive systems","authors":"Henrique Louzada, Gabriel Chaves, Lesandro Ponciano","doi":"10.1145/3424953.3426545","DOIUrl":"https://doi.org/10.1145/3424953.3426545","url":null,"abstract":"Depending on the way they are designed, interactive systems may inadvertently influence the opinions, choices and actions of their users. To avoid this problem, there has been a growing demand for this type of system to be able to explain to users how their outputs are generated. This demand is called the \"right to an explanation\", or the explainability requirement. User perceptions are still little addressed in this context, for example: (1) do people value software explainability? (2) what are the typical user profiles in terms of their demand for explainability? This work seeks to elucidate users' perception and to identify profiles of users in terms of their perceptions of explainability requirement. The method consists of a questionnaire, data mining algorithms and statistical analysis to uncover and analyze the profiles of users. In a case study conducted with 61 people, we found 6 profiles, each one representing a different perception and type of requirement about software explainability. The implications of these profiles for the design of interactive systems are discussed.","PeriodicalId":102113,"journal":{"name":"Proceedings of the 19th Brazilian Symposium on Human Factors in Computing Systems","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125127580","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