The popularization of online social networks has contributed to the appearance of new strategies that consider the relationship and interaction between people as a means to support information search and recommendation. The literature has indicated that a cognitive authority produces and shares information of better quality and relevance for those who recognizes that authority, being a promising concept to support information retrieval and quality judgement on the web. However, identifying such authorities is still a challenge. In this paper, we introduce the idAuthority: a conceptual framework to support the identification of cognitive authorities in social networks. To illustrate its application in a practical context, we instantiate the framework for a real online social network of Inclusive Education teachers, and evaluate its results with a group of six teachers. The results indicate the idAuthority as a promising framework to support the creation of mechanisms for identifying cognitive authorities in specific social networks.
{"title":"Identifying cognitive authority in social networks: a conceptual framework","authors":"D. F. Toledo, R. Pereira, E. Oliveirajr","doi":"10.1145/3148456.3148498","DOIUrl":"https://doi.org/10.1145/3148456.3148498","url":null,"abstract":"The popularization of online social networks has contributed to the appearance of new strategies that consider the relationship and interaction between people as a means to support information search and recommendation. The literature has indicated that a cognitive authority produces and shares information of better quality and relevance for those who recognizes that authority, being a promising concept to support information retrieval and quality judgement on the web. However, identifying such authorities is still a challenge. In this paper, we introduce the idAuthority: a conceptual framework to support the identification of cognitive authorities in social networks. To illustrate its application in a practical context, we instantiate the framework for a real online social network of Inclusive Education teachers, and evaluate its results with a group of six teachers. The results indicate the idAuthority as a promising framework to support the creation of mechanisms for identifying cognitive authorities in specific social networks.","PeriodicalId":423409,"journal":{"name":"Proceedings of the 14th Brazilian Symposium on Human Factors in Computing Systems","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133418286","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}
This paper addresses privacy related to individual's personal information disclosure in the context of Social Network Sites (SNSs). We present the Privacy Design Model (PDM) - built upon Altman's theory of privacy and Semiotic Engineering theory - as a descriptive model that takes into account dimensions corresponding to aspects upon which designers should reflect at design time, regarding personal information disclosure within these systems. PDM considers as personal information disclosure not only pieces of information about the individual, but also the individual's speech and activities that express his/her identity within the system. Thus, we hope to provide designers with a better understanding of how privacy can be treated in SNS by structuring the design space of personal information disclosure through such dimensions. We also analyze the applicability of the model, through the deconstruction of a real SNS in terms of the privacy dimensions proposed in PDM and discuss the implications of our findings.
{"title":"Supporting designers in modeling privacy for social network sites","authors":"Maria Lúcia Bento Villela, R. Prates","doi":"10.1145/3148456.3148468","DOIUrl":"https://doi.org/10.1145/3148456.3148468","url":null,"abstract":"This paper addresses privacy related to individual's personal information disclosure in the context of Social Network Sites (SNSs). We present the Privacy Design Model (PDM) - built upon Altman's theory of privacy and Semiotic Engineering theory - as a descriptive model that takes into account dimensions corresponding to aspects upon which designers should reflect at design time, regarding personal information disclosure within these systems. PDM considers as personal information disclosure not only pieces of information about the individual, but also the individual's speech and activities that express his/her identity within the system. Thus, we hope to provide designers with a better understanding of how privacy can be treated in SNS by structuring the design space of personal information disclosure through such dimensions. We also analyze the applicability of the model, through the deconstruction of a real SNS in terms of the privacy dimensions proposed in PDM and discuss the implications of our findings.","PeriodicalId":423409,"journal":{"name":"Proceedings of the 14th Brazilian Symposium on Human Factors in Computing Systems","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128031441","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}
Ubiquitous technology has great power to simplify and improve people's life. However, as the 4th Grand Research Challenge for the Brazilian Computer Society mentions, it is necessary to extend computational systems to all Brazilians, respecting their diversity and differences. Most studies in the literature consider the participation of users with different profiles during the design process. However, there is not a concern with interface adaptation to user's needs and interaction preferences. This paper presents a design process which guides the ubiquitous systems design from the relevant users' features identification to adapt the user interface, to the evaluation of the created prototype. The user's characteristics identification is performed by applying the UbiCARD technique in the system context to be developed. A prototype is presented as a proof of concept.
{"title":"An approach to designing ubiquitous systems that consider the user's diversity","authors":"T. Alencar, Marcelo Barbosa, Vânia P. A. Neris","doi":"10.1145/3148456.3148470","DOIUrl":"https://doi.org/10.1145/3148456.3148470","url":null,"abstract":"Ubiquitous technology has great power to simplify and improve people's life. However, as the 4th Grand Research Challenge for the Brazilian Computer Society mentions, it is necessary to extend computational systems to all Brazilians, respecting their diversity and differences. Most studies in the literature consider the participation of users with different profiles during the design process. However, there is not a concern with interface adaptation to user's needs and interaction preferences. This paper presents a design process which guides the ubiquitous systems design from the relevant users' features identification to adapt the user interface, to the evaluation of the created prototype. The user's characteristics identification is performed by applying the UbiCARD technique in the system context to be developed. A prototype is presented as a proof of concept.","PeriodicalId":423409,"journal":{"name":"Proceedings of the 14th Brazilian Symposium on Human Factors in Computing Systems","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114270797","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}
We are presenting our in-the-wild study involving designers and healthcare professionals acting as users participating in the design process of applications to support their communication flow at their workspace. Our principle, as many other possible approaches, is that interaction design is an iterative and interactive process for developing systems in which the Participatory Design (PD) and User Centered Design (UCD) is essential, providing creation of end artifacts to better satisfy user's needs, incorporating their abilities, not only for work perspective but also in other aspects of their lives. From our study we've formalized our observations into design guidelines so that the out-office user's experiences, incorporating concepts of their daily life and social activities become part of the design requirements, what is essential to the system to achieve the necessary properties for ICT adoption.
{"title":"Interaction design process for healthcare professionals: formalizing user's contexts observations","authors":"Janaina Cintra Abib, J. C. A. Silva","doi":"10.1145/3148456.3148479","DOIUrl":"https://doi.org/10.1145/3148456.3148479","url":null,"abstract":"We are presenting our in-the-wild study involving designers and healthcare professionals acting as users participating in the design process of applications to support their communication flow at their workspace. Our principle, as many other possible approaches, is that interaction design is an iterative and interactive process for developing systems in which the Participatory Design (PD) and User Centered Design (UCD) is essential, providing creation of end artifacts to better satisfy user's needs, incorporating their abilities, not only for work perspective but also in other aspects of their lives. From our study we've formalized our observations into design guidelines so that the out-office user's experiences, incorporating concepts of their daily life and social activities become part of the design requirements, what is essential to the system to achieve the necessary properties for ICT adoption.","PeriodicalId":423409,"journal":{"name":"Proceedings of the 14th Brazilian Symposium on Human Factors in Computing Systems","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124090990","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}
C. Morimoto, A. Tula, J. A. Leyva, Carlos E. L. Elmadjian
Gaze-based interfaces use eye trackers as input devices to substitute, for example, the keyboard and mouse of a conventional graphical user interface. For people with severe motor disabilities, gaze is one of the few alternatives to interact with the world. The most common gaze interaction paradigm is called dwell-time, where keys are selected using fixations longer than a certain "dwell". Though simple, this mechanism does not permit the selection of keys at precise moments, a requirement to play music and certain video games. In this paper we introduce two gaze interaction techniques that overcome this limitation. The first is an extension of the dwell-time, where selection is triggered when the gaze exits the focused key. The second is based on the Context Switching paradigm, that uses saccades for selection instead of fixations. Results of a user experiment show that the Context Switching paradigm permits a more accurate timing control while playing music at 45 and 70 beats per minute.
{"title":"Eyejam: a gaze-controlled musical interface","authors":"C. Morimoto, A. Tula, J. A. Leyva, Carlos E. L. Elmadjian","doi":"10.1145/3148456.3148493","DOIUrl":"https://doi.org/10.1145/3148456.3148493","url":null,"abstract":"Gaze-based interfaces use eye trackers as input devices to substitute, for example, the keyboard and mouse of a conventional graphical user interface. For people with severe motor disabilities, gaze is one of the few alternatives to interact with the world. The most common gaze interaction paradigm is called dwell-time, where keys are selected using fixations longer than a certain \"dwell\". Though simple, this mechanism does not permit the selection of keys at precise moments, a requirement to play music and certain video games. In this paper we introduce two gaze interaction techniques that overcome this limitation. The first is an extension of the dwell-time, where selection is triggered when the gaze exits the focused key. The second is based on the Context Switching paradigm, that uses saccades for selection instead of fixations. Results of a user experiment show that the Context Switching paradigm permits a more accurate timing control while playing music at 45 and 70 beats per minute.","PeriodicalId":423409,"journal":{"name":"Proceedings of the 14th Brazilian Symposium on Human Factors in Computing Systems","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121139382","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}
Contemporary technologies such as Tangible User Interfaces (TUI) have not been explored in its full potential in educational contexts, to take advantage of the innate ability of children to tell stories. This activity has proven to be authentic and personally relevant for children with benefits to their personal and social development. This paper presents the design and construction of a TUI environment to be used in inclusive educational contexts, allowing children to create, share and participate in the process of constructing narratives. The environment was conceived under the Semio-Participatory Design Model, and was experimented with the active participation of teachers and children in a real educational context. The design rationale of CPES, a Collaborative Programmable Environment for Storytelling, is presented and results of the final product and its use are discussed in the paper.
{"title":"A socio-constructionist environment to create stories using tangible interfaces","authors":"Julia Posada, M. Baranauskas","doi":"10.1145/3148456.3148457","DOIUrl":"https://doi.org/10.1145/3148456.3148457","url":null,"abstract":"Contemporary technologies such as Tangible User Interfaces (TUI) have not been explored in its full potential in educational contexts, to take advantage of the innate ability of children to tell stories. This activity has proven to be authentic and personally relevant for children with benefits to their personal and social development. This paper presents the design and construction of a TUI environment to be used in inclusive educational contexts, allowing children to create, share and participate in the process of constructing narratives. The environment was conceived under the Semio-Participatory Design Model, and was experimented with the active participation of teachers and children in a real educational context. The design rationale of CPES, a Collaborative Programmable Environment for Storytelling, is presented and results of the final product and its use are discussed in the paper.","PeriodicalId":423409,"journal":{"name":"Proceedings of the 14th Brazilian Symposium on Human Factors in Computing Systems","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122560500","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}
B. B. Ribeiro, Débora Maurmo Modesto, Simone Bacellar Leal Ferreira
In Brazil a great number of essential services are only provided over the internet. These services should be available to any users, regardless of their individual skills or disabilities. Functional illiterates are those who have reading and understanding difficulties. These users have large access problems when using the internet, as most of its content is presented as text, including the front-end pages for the services mentioned before. The objective of this research is to present and evaluate the results of using a technique that matches mediation with an assistive technology used to create dialogs over the original page layer from a Web site, allowing creation and authoring of a new accessible layer for the non-accessible existing pages, focusing on functional illiterate users.
{"title":"Using mediation dialogs to improve navigation of low literate users on the web","authors":"B. B. Ribeiro, Débora Maurmo Modesto, Simone Bacellar Leal Ferreira","doi":"10.1145/3148456.3148463","DOIUrl":"https://doi.org/10.1145/3148456.3148463","url":null,"abstract":"In Brazil a great number of essential services are only provided over the internet. These services should be available to any users, regardless of their individual skills or disabilities. Functional illiterates are those who have reading and understanding difficulties. These users have large access problems when using the internet, as most of its content is presented as text, including the front-end pages for the services mentioned before. The objective of this research is to present and evaluate the results of using a technique that matches mediation with an assistive technology used to create dialogs over the original page layer from a Web site, allowing creation and authoring of a new accessible layer for the non-accessible existing pages, focusing on functional illiterate users.","PeriodicalId":423409,"journal":{"name":"Proceedings of the 14th Brazilian Symposium on Human Factors in Computing Systems","volume":"110 43","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131912465","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}
Social networks allow users to share information among themselves. In this article we investigate the influence of Facebook's interface on how its users share information. To do so, firstly we present a comparison of how users share their information online and offline. We also analyze Facebook and identify which strategies are used in the system to allow or encourage users to disclose their information. By contrasting the pieces of information that are shared with a larger audience online than offline with which pieces of information the interface gives a bigger encouragement to users to disclose we find that there is a large overlap between the two groups. This finding points to the potential impact that interface decisions have on users' self-disclosure on social networks.
{"title":"The role of the interface in self-disclosure differences in social networks online and offline","authors":"S. Xavier, R. Prates","doi":"10.1145/3148456.3148499","DOIUrl":"https://doi.org/10.1145/3148456.3148499","url":null,"abstract":"Social networks allow users to share information among themselves. In this article we investigate the influence of Facebook's interface on how its users share information. To do so, firstly we present a comparison of how users share their information online and offline. We also analyze Facebook and identify which strategies are used in the system to allow or encourage users to disclose their information. By contrasting the pieces of information that are shared with a larger audience online than offline with which pieces of information the interface gives a bigger encouragement to users to disclose we find that there is a large overlap between the two groups. This finding points to the potential impact that interface decisions have on users' self-disclosure on social networks.","PeriodicalId":423409,"journal":{"name":"Proceedings of the 14th Brazilian Symposium on Human Factors in Computing Systems","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121827835","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}
C. Q. Santos, Luana Müller, A. D. C. A. Ziesemer, Luciana Espindola, Pedro A. Pires, M. Silveira
Digital games have become very popular and yet there is little study on how gamers learn a game. In this paper, we present a preliminary study in this matter, conducted by means of a survey to investigate gamers' preferences and strategies while playing and learning a game. Participants were also asked about the importance of help systems in games and whether they contribute in the learning process. As results, we observed that help is in fact important, that the ideal kind of help depends on the type of game, and that help must not compromise the gameplay or the fun.
{"title":"How can i help you?: preliminary studies about user strategies and preferences during a game","authors":"C. Q. Santos, Luana Müller, A. D. C. A. Ziesemer, Luciana Espindola, Pedro A. Pires, M. Silveira","doi":"10.1145/3148456.3148511","DOIUrl":"https://doi.org/10.1145/3148456.3148511","url":null,"abstract":"Digital games have become very popular and yet there is little study on how gamers learn a game. In this paper, we present a preliminary study in this matter, conducted by means of a survey to investigate gamers' preferences and strategies while playing and learning a game. Participants were also asked about the importance of help systems in games and whether they contribute in the learning process. As results, we observed that help is in fact important, that the ideal kind of help depends on the type of game, and that help must not compromise the gameplay or the fun.","PeriodicalId":423409,"journal":{"name":"Proceedings of the 14th Brazilian Symposium on Human Factors in Computing Systems","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132710100","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}
The Topic Wizard presented in this paper is a new interactive tool that supports the definition and revision of topics in form of regular expressions, combining a dialog for prefix and suffix extension with a word tree-based representation of phrases for restricting the query to specific expressions. The examples stem from the Media Watch on Climate Change, a public Web portal based on the webLyzard Web intelligence platform that aggregates environmental stakeholder communication from multiple online sources.
本文提出的Topic Wizard是一个新的交互式工具，它支持以正则表达式的形式定义和修改主题，将用于前缀和后缀扩展的对话框与用于将查询限制为特定表达式的基于词树的短语表示相结合。这些例子来自气候变化媒体观察(Media Watch on Climate Change)，这是一个基于webblyzard网络情报平台的公共门户网站，汇集了来自多个在线来源的环境利益相关者的信息。
{"title":"Topic wizard: interactive visual tool for defining and disambiguating topics via regular expressions","authors":"A. Scharl, Daniel Fischl","doi":"10.1145/3148456.3148517","DOIUrl":"https://doi.org/10.1145/3148456.3148517","url":null,"abstract":"The Topic Wizard presented in this paper is a new interactive tool that supports the definition and revision of topics in form of regular expressions, combining a dialog for prefix and suffix extension with a word tree-based representation of phrases for restricting the query to specific expressions. The examples stem from the Media Watch on Climate Change, a public Web portal based on the webLyzard Web intelligence platform that aggregates environmental stakeholder communication from multiple online sources.","PeriodicalId":423409,"journal":{"name":"Proceedings of the 14th Brazilian Symposium on Human Factors in Computing Systems","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130547647","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}
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