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IHC Tables of Contents: 06081011-111-212-112-213

Proceedings of the 2008 Brazilian Symposium on Human Factors in Computing Systems

Fullname:Proceedings of the VIII Brazilian Symposium on Human Factors in Computing Systems
Editors:Lucia Filgueiras; Marco Winckler
Location:Porto Alegre, Brazil
Dates:2008-Oct-21 to 2008-Oct-24
Publisher:ACM
Standard No:ISBN: 85-7669-203-1, 978-85-7669-203-4; ACM DL: Table of Contents hcibib: IHC08
Papers:63
Pages:365
  1. Artigos completos
  2. Artigos resumidos
  3. Relatos de experiência na indústria
  4. Demonstrações e pôsteres
  5. Tutorials
  6. Workshops
  7. Painel

Artigos completos

A expressão da diversidade de usuários no projeto de interação com padrões e personas BIBAFull-Text 1-10
  Plinio Thomaz, Jr. Aquino; Lucia Vilela Leite Filgueiras
Accommodating users' profile diversity in systems interface projects is a frequent problem for the human computer interface designer. Therefore, user is faced with barriers in the use of interfaces which were not designed for your profile. This work presents a solution for expressing and accommodating users' diversity, which is useful for the HCI designer, especially for those who design families of products. PICAPS are interface design patterns with layers indexed by personas. The interface design patterns support the designer in employing proven solutions, for they represent a recurrent problem and its abstract solution in such a way that this solution can be applied to different instantiations of the same problem. PICAPs are structured in multiple layers to make possible the users' diversity accommodation. The layers are indexed by personas as user's characterization resource. This concept has been applied to electronic government services, because such systems should be usable by any citizen and therefore are a good example of the user diversity problem. A field research with 25 designers has been performed to check the concept's applicability.
A service science perspective for interfaces of online service applications BIBAFull-Text 11-20
  Claudio Pinhanez
This paper proposes a framework based on Service Science for online service applications that identifies and enables a better understanding of the different issues faced by their designers, engineers, and delivery personnel. To demonstrate the utility of the framework, we consider the 6 basic characteristics of services -- customer-as-input, heterogeneity, simultaneity, perishability, coproduction, and intangibility -- and derive from these characteristics a list of 15 different issues that are highly important for the design and evaluation of the human-computer interface of online services: trust, privacy, and security; personalization, service recovery and quality consistency; performance consistency and fairness; demand management and marketing; customer empowerment and training; service expectation, process satisfaction, and anger/frustration management.
Abordagem para o desenvolvimento e avaliação de interfaces multimodais web pautada em princípios de usabilidade BIBAFull-Text 21-30
  Americo Talarico Neto; Thiago Jabur Bittar; Renata Pontin; Mattos Fortes; Kátia Felizardo
In this paper we describe an approach to facilitate the design of Web multimodal interfaces aiming at improving the user experience and the user interface usability using speech recognition and speech synthesis together with the usual graphical user interfaces. It is also presented a proposal of usability evaluation based on the heuristic evaluation, which considers the multimodal principles identified during a case study. As a result, from literature review and the execution of the case study, using the approach in question, we are reporting our considerations for the design, development and improvement of the Web multimodal interfaces.
An exploratory study on non-visual mobile phone interfaces for games BIBAFull-Text 31-39
  Luis Valente; Clarisse Sieckenius de Souza; Bruno Feijó
Conventional games (computer, mobile, and console) rely heavily on visual information to convey the gameplay and to drive the interaction with the player. With the rapid evolution of graphics hardware and Computer Graphics, this becomes more pronounced. An undesirable consequence of this trend is that visually-impaired people get more excluded from the play. Mobile phones are pervasive nowadays, and can reach a potentially large user base, including the visually-impaired. However, in mobile gaming there seems to be only few alternatives to serve this community. This work presents an exploratory study on non-visual mobile phone interfaces for games. It is based on Semiotic Engineering principles, and emphasizes communication through aural, tactile and gestural signs. Results include a number of issues that can be incorporated to a wider research agenda about mobile gaming accessibility.
Analisando sistemas de classificação na web sob a perspectiva da interação social em comunidades de prática BIBAFull-Text 40-49
  Fernando M. Figueira Filho; Paulo Lício de Geus; João Porto de Albuquerque
Social interaction mediated by information technology has been studied from several perspectives over the past years. This paper draws attention to the relevance of classification systems and categories as important mediation artifacts in human-computer interaction. In this sense, classification schemes provide meaning to information and mutual understanding between the parts in an interaction. However, studies in distributed cognition show us that classification schemes have a flexible nature and depend on the context in everyday human activity. Under this perspective, this paper analyzes three approaches to classification in the web: the semantic web, collaborative annotation and hybrid approaches. The analyses are based on the concept of communities of practice and on the perspective of context as a problem of social interaction in these communities. Based on these theoretical works, this paper derives two design principles for web classification systems: firstly, collaboration allows for participating users to be active agents in content classification. Secondly, multidimensionality permits the co-existence and management of multiple classification perspectives, which is of fundamental importance in complex, heterogeneous and large-scale infrastructures such as the web.
Aplicação semi-estruturada do método de inspeção semiótica: estudo de caso para o domínio educacional BIBAFull-Text 50-59
  Erica R. Oliveira; Luiz C. S. Luz; Raquel O. Prates
Educational environments bring new challenges for their design and evaluation, particularly in considering their interfaces. One issue that has already been identified is the importance of the teacher's involvement. This article presents a proposal based on Semiotic Engineering theory, the Semiotic Inspection Intermediated Method (SIIM). The method combines two known methods, Semiotic Inspection Method (SIM) and Underlying Discourse Unveiling Method (UDUM) to enable the evaluation of an educational environment by an evaluator from the point of view of the teacher.
Artefatos físicos de interação com a TVDI: desafios e diretrizes para o cenário brasileiro BIBAFull-Text 60-69
  Leonardo Cunha de Miranda; Lara Schibelsky G. Piccolo; M. Cecília C. Baranauskas
The existence of digital artifacts commonly used to interact with current television system does not guarantee that those devices are adequate to the developments with iDTV, where new types of applications should be offered. The coexistence of an increasing number of facilities that make use of the remote control could result in more complex interfaces limiting its popularization. This article presents the challenges arising from the design and insertion of new digital devices for interaction of users with iDTV in Brazil. In addition it presents guidelines that could conduct to the design of new digital device for use with the television in future works.
Avaliação da manas na identificação de problemas de impacto social: um estudo de caso BIBAFull-Text 70-79
  Rodrigo Ferreira da Silva; Raquel Oliveira Prates
Success of collaborative systems is closely related to its social impact on users. Manas is one of the few available proposals that aim at supporting designers of collaborative systems to take the social impact of their decisions into consideration during design. In this paper we present an evaluation of Manas. The case study conducted shows that Manas is able to point out real social problems caused by a collaborative system. It also provided indicators on the expressivity of Manas design language.
Considerações sobre apresentação de informações de contexto em interfaces com o usuário BIBAFull-Text 80-87
  Patrick Ücker Calvetti; Milene Selbach Silveira
With the rapid increase of wireless nets and the spread use of mobile devices, arises the opportunity to offer to these users a context aware information wherever these users are. This opportunity aims to qualify the interaction of users with these devices, thus making it more productive. Thereto, the possible forms to present this information to the user should be investigated. The work herein described discusses some alternatives to present the context aware information to the user (spatial and textual format, and manual and automatic execution), analyzing it through a study carried out with users in a Museum environment.
Definindo uma proposta para avaliações de usabilidade de aplicações para o sistema brasileiro de TV digital BIBAFull-Text 88-97
  Luciano Vargas Flores; Richard Faust; Marcelo Soares Pimenta
This paper reports the experience of defining and testing a usability evaluation methodology to assess digital TV applications. The proposed methodology is an integral part of the Usability Reference Standard for the Brazilian Digital TV System, and it suits the evaluation of applications built according to that standard.
Design da interação de novos produtos para TVD: abordagens qualitativas BIBAFull-Text 98-107
  Alex Sandro Gomes; Bruno Monteiro; Cássio Melo; Daniel Arcoverde; Carina Frota
In this paper we describe a process used for conceiving new products for the Brazilian interactive TV platform. Considering all the restrictions and many aspects of context and usage, we proposed and refined an interaction design process. This process was applied to design three new interactive products. To capture details from context, the process started with intensive qualitative research in locus. The initial versions are presented as low fidelity prototypes which are submitted to cycled test and refinement. The results illustrated in this paper help us understanding the main challenges for creating products in the field of interactive TV.
Do learning styles influence the way students perceive interface agents? BIBAFull-Text 108-116
  Eliseo Reategui; Cláudia Zattera
This paper presents an interface agent, designed for a virtual learning environment, whose main capabilities are to communicate with users in natural language and to promote collaboration by inciting students to help each other. An experiment was carried out with 72 university students to assess the effectiveness of the interface agent regarding its ability to improve students' performance, to influence students' perception of their learning experience, and to involve students in collaborating with each other. Furthermore, the students were classified by their learning style, according to the Felder-Silverman model [6]. We then evaluated if different learning styles could produce different results because of the way students perceived the interface agent. The results of the experiment are presented here, as well as conclusions and direction for future work.
Enhancing interaction and collaboration in multimedia rooms with multilayered annotations and telepointers BIBAFull-Text 117-125
  J. Alfredo Sánchez; Daniel Strazzulla; Rosa G. Paredes
We discuss the rationale for the use of multi-layered annotations and telepointers in the context of group activities conducted in multimedia rooms. In this setting, users rely on large interactive displays, desktop or laptop computers, and mobile devices. We have designed a synchronous collaboration environment termed Strata that supports interaction and collaboration among local and remote participants who share a workspace and communicate by pointing and annotating on objects. In the proposed environment, telepointers increase awareness of other users and their intentions, whereas transparent layers facilitate the production of annotations. Layers can be activated or deactivated depending on each user's preferences and interests, thus reducing clutter and facilitating coordination. We present the design and prototypical implementation of Strata as well as encouraging results from preliminary evaluations.
Folksonomias: uma análise crítica focada na interação e na natureza da técnica BIBAFull-Text 126-135
  Roberto Pereira; Sérgio Roberto P. da Silva
The folksonomy technique represents an initiative for the organization and the treatment of the information overload on the Web. However, systems that apply the folksonomy technique also suffer with problems of information overload and lack of quality. This paper presents a critical analysis about the folksonomy technique focusing in the user's interaction and in the technique's nature. Together with those discussions, we present a user-focused approach, called folkauthority, for the improvement of the results obtained in the information recovery stage.
Heva: uma ferramenta de suporte à avaliação heurística para sistemas web BIBAFull-Text 136-145
  Janne Yukiko Y. Oeiras; David Leonardo M. Bentolila; Mayara Costa Figueiredo
In Human Computer-Interaction courses students generally experience Heuristic Evaluation (HE) and they may have to produce an individual report as a deliverable. This activity requires an additional effort because they have to document all problems while doing the HE.
   In this paper we describe Heva, a tool developed to support HE of Web based systems. This tool can reduce the workload on the evaluators by giving them a simple way to capture screenshots and to describe the problems they found. In the end of the evaluation, the user can generate a report in RTF or PDF file.
How computers can help teachers to produce cultural sensitive web-based learning material BIBAFull-Text 146-155
  Junia Coutinho Anacleto; Alessandro José Francisco Carlos; Aparecido Fabiano Pinatti de Carvalho; Ana Luiza Dias
The use of the Internet as a supportive tool for learning process made easier the transposition of geographical barriers in education, bringing some challenges to Distance Learning, such as the development of web-based learning material, whose content will be explored by learners from different places and cultures. Therefore, it is interesting to think of providing tools which support teachers to deal with those challenges. Cognitor is an authoring tool that helps teachers to develop web based learning material, aiming to support teachers to develop learning content which can integrate learners from different culture background, during the learning process, and which can be easily understood, through the use of common sense knowledge, i.e. the knowledge shared by people inserted into the same cultural context. This paper presents a usability test on Cognitor and discusses some preliminary results from it, pointing to the relevance of the tool to help teachers with their tasks.
Inferindo as emoções do usuário pela face através de um sistema psicológico de codificação facial BIBAFull-Text 156-165
  Eduardo de Oliveira; Patrícia Augustin Jaques
This paper presents a computing system to infer anger, fear, disgust, surprise, joy, and sadness emotions from user's facial expressions through a webcam. The emotion detection is based on a facial psychological system, the Facial Action Coding System (FACS), and uses machine learning algorithms for its execution. Experiments using this system reached 60% success in average, achieving a success rate of 90% for joy and sadness.
Linguagens computacionais como interfaces: um estudo com nested context language BIBAFull-Text 166-175
  Carlos de Salles Soares Neto; Clarisse Sieckenius de Souza; Luiz Fernando Gomes Soares
This paper presents an empirical study about the Nested Context Language (NCL), which is a language developed to create multimedia documents and Interactive Digital TV (IDTV) applications for the Brazilian system. The goal was to obtain indicators of NCL usability in the generation of content for IDTV, since this language plays the role of interface language for users. Through data collected on forms filled by 220 students from various classes of training courses conducted in some states of Brazil and later analysis by a mix of qualitative and quantitative methods, some aspects were found where the NCL profile can and should be improved in order to ease the activities of content creators for IDTV, who have a heterogeneous profile and are not necessarily familiar with computer programming.
Montando questionários para medir a satisfação do usuário: avaliação de interface de um sistema que utiliza técnicas de recuperação de imagens por conteúdo BIBAFull-Text 176-185
  Ana Lúcia Filardi; Agma Juci Machado Traina
An attractive and intuitive design of the human-computer interface is essential to the success of any computational system. Content-based image retrieval (CBIR) systems are inherently interactive. However, little attention has been paid to their interfaces. A major difficulty for designing the interface of these systems is to ally high quality means to integrate the querying on the images and the presentation and handling of the results. The goal of this paper was to analyze the user interaction in CBIR systems regarding their functionality and usability. This was achieved by following the actual interaction of users while working with a CBIR system. This task allowed us to suggest a questionnaire that can properly reflect the evaluated aspects of the users interaction regarding their satisfaction degree. This result can help on improving the development of new CBIR systems, which are a valuable tool in medical systems.
Personalization in e-learning: the adaptive system vs. the intelligent agent approaches BIBAFull-Text 186-195
  Silvia Schiaffino; Analía Amandi; Isabela Gasparini; Marcelo S. Pimenta
Nowadays it is essential to obtain personalization in e-learning, to provide help to students' activities in this environment. There are two main research directions that aim at providing personalization in e-learning: adaptive educational systems and intelligent tutors (agents). This paper presents the adaptability approach designed for the AdaptWeb system and the eTeacher agent, describing design and implementation issues, and discussing results obtained from students' evaluation in these real applications. Then, this paper presents a comparison about them.
Towards user psychological profile BIBAFull-Text 196-203
  Maria Augusta S. N. Nunes; Stefano A. Cerri; Nathalie Blanc
Recents studies have demonstrated how useful and fundamental psychological aspects such as people Personality Traits and Emotions are during human decision-making process. Some research towards the identification and model of user's Emotions have been done by Affective Computing researchers, however Personality Traits have been quite neglected. The World Wide Web is an enormous source of products and services available for people. There is a huge effort done by scientists towards the creation of effective strategies to personalize those products/services for each people interested in using them. By storing Personality Traits in User Profiles we intend to enable Recommender Systems in order to deduce more interesting recommendations for users acting proactively to offer them products/services as a consequence of a prediction of their future needs and behaviors. To fill this gap, in this work, we propose the interpretation, modeling, formalization, storing and application of Personality Traits in User Profile, followed by an experimentation developed in the context of Recommender Systems.
Um prospecto de sistemas colaborativos: modelos e frameworks BIBAFull-Text 204-213
  Leonelo Dell Anhol Almeida; Maria Cecília Calani Baranauskas
With the popularization of the Internet and mobile devices, collaborative systems have been facing two major challenges: the diversity of devices and platforms and the diversity of users' competencies and potential contexts of use of such systems. In this work we present an analysis based on artifacts of the Organizational Semiotics for the main concepts, models and frameworks available in the literature of the area. As results, we point out concepts more present and with greater potential of impact on such systems and we detect theoretical and technological gaps in models and frameworks available for facing the challenges.
Uma estratégia de apoio à institucionalização da usabilidade em ambientes de desenvolvimento ágil BIBAFull-Text 214-223
  David Falcão Barbosa; Elizabeth S. Furtado; Albert Schilling Gomes
Software organizations, reaching continuously for a better market position, are more likely to realize that the effort spent to follow its processes may be insufficient to assure the quality of a product. Such situation is especially useful when the reality from the agile development enterprises is taken into account. In these cases, there are difficulties to define which activities shall be carried through without jeopardizing the productivity inherent to this development approach. This work proposes a strategy for the usability institutionalization. Its purpose is to help organizations to perform improvement on their processes, based on the integration of agile development and management concepts, usability maturity models and human resources management. A study case was carried out in order to apply this integration in practice. The results achieved with this experience were evaluated and contributed for a change in the development culture of the organization.
Usuários podem escrever especificações de sistemas? Um estudo empírico com uma linguagem de script BIBAFull-Text 224-233
  Andréia Libório Sampaio; Clarisse Sieckenius de Souza
The use of information systems has grown rapidly in recent years, but the number of stakeholders has not grown at the same rate. Thus, there is a tendency to engage and empower end users in the software development process (EUD). Furthermore, users can participate in the development of additional functions to an existing system. This research focus on the creation of new functions (or extensions) in an existing web interface by specifying a series of actions. In this paper we present the results of our first study to analyse how two distinct groups of end users respond to the use of a macro language for the Web (CoScripter), while trying to represent system extensions. The study thus suggests that: (1) CoScripter is suitable for the specification of system extensions by end users, but (2) it needs some improvements in order to meet the needs of End User Development (EUD).
Utilizando sons como forma de comunicação, entretenimento e material pedagógico para auxiliar o desenvolvimento da percepção musical infantil BIBAFull-Text 234-243
  Elieser Ademir de Jesus; Mônica Zewe Uriarte; André Luis Alice Raabe
This article describes the process of developing a software to aid the development of children musical perception focused mainly on the age of 4 to 6 years. The software was evaluated with 34 children in order to measure their acceptance and to detect and correct problems of usability. The analysis of data collected in the experiments allowed to refine some interface graphical characteristics and also to improve the communication of virtual instructor character with children using recorded voice. Finally, it was tested the effectiveness of the adopted solutions to problems encountered by using t tests to compare averages and F tests for comparison of variances. It was observed that the solutions adopted improved the usability of the software and also allowed an easier access to the educational potential of the software.

Artigos resumidos

A web-based user interaction framework for collaboratively building and validating ontologies BIBAFull-Text 244-247
  Arno Scharl; Albert Weichselbraun; Gerhard Wohlgenannt
Collaborative ontology building requires innovative navigational instruments that improve content exploration and the creation of shared meaning. Building upon an existing architecture for automated ontology learning from unstructured textual resources developed by the authors, this paper presents a Web-based user interaction framework encompassing three major components: (i) real-time visualizations of ontology evolution with time interval and confidence sliders, (ii) traditional ontology editing environments, and (iii) multi-player online games leveraging social networking platforms in the tradition of games with a purpose. A prototype in the environmental domain will showcase the integration of powerful search capabilities with novel graphbased interfaces for guiding novice and expert users alike.
Antecipando a avaliação de IHC: verificação de diretrizes a partir de modelos BIBAFull-Text 248-251
  Tiago Silva da Silva; Milene Selbach Silveira
The research herein presented deals with model-based usability evaluation proposing an informal non-automatic method: Guidelines to model-based usability evaluation. This work aims not just to anticipate usability evaluation, but also to present an easy and cheap method, that can be used by HCI professionals or developers with a little experience in the area.
Design de ajudas inteligentes em interfaces educativas BIBAFull-Text 252-255
  Ana Emília de Melo Queiroz; Maurício Motta Braga; Alex Sandro Gomes
This paper reports the design of Scaffolds aids in an educational interface. We used a constructivist framework to make possible to investigate the meanings that emerge during the actions using an educational software. To carry out this investigation, a prototype was designed and tested with elementary school teachers. The results made it possible to design scaffolding strategies that improves the sense making of concepts that emerges during the software usage.
Design participativo numa comunidade de software livre: o caso do website BrOffice.org BIBAFull-Text 256-259
  Frederick M. C. van Amstel
The BrOffice.org website, that distributes a free software office suite, was restructured by participatory design with their user community and developers. To involve people that were geographically disperse in the process, Internet communication tools were used with traditional use forms or modified ones. The discussion's synthesis leveraged a new strategy for presenting their products and treating their users, who should have easier access to services. At the end of the process, documentation was built collaboratively specifying the new website information architecture.
Fitts' law for older adults: considering a factor of age BIBAFull-Text 260-263
  Maxim Bakaev
The paper describes an experiment investigating older adults' ability to make rapid aimed movements with a computer mouse. Fitts' law was found to be applicable, but had R2 lower than for younger subjects. On average, it took elder participants twice as much time to complete movement tasks, but their accuracy was two times higher. Error level was affected by small (8 pixels) target size, but not by movement distance. Mean throughput was 4.58, but only 3.29 for senior subjects. Extended regression models, incorporating factors of subjects' age and experience, were proposed for movement time and throughput, providing a useful insight for HCI researchers and interface designers.
Proposta de perfis de usuário para a TV interativa no Brasil BIBAFull-Text 264-267
  Gil Barros; Marcelo K. Zuffo
Usability is based on the knowledge of the user and her tasks. A review of the literature demonstrated that there's little research on users of interactive TV in Brazil. Based on similar work done in foreign countries it was possible to formulate an initial classification, which was extended to incorporate specific requirements for the Brazilian population. The postulated profiles were presented to specialists from the field and the validated and complemented. As result four user profiles for interactive TV in Brazil are presented with their characteristics and usability requirements.
   Raciocínio semiótico abdutivo e conhecimentos prévios na aquisição de conhecimentos inerentes à interação humano-computador.
Ecivaldo de Souza Matos BIBAFull-Text 268-271
 
This paper describes partial results of a qualitative research in progress focused in the interaction between the theoretical and epistemological semiotics abductive reasoning described by Charles Sanders Peirce, and previous knowledge under a Lev Semënovic Vygotskij's perspective. Partial results show that some theoretical aspects should be examined to improve the development of technological human abilities in Human-Computer Interaction.
Supporting requirements in a traceability approach between business process and user interfaces BIBAFull-Text 272-275
  Kênia Sousa; Hildeberto Mendonça; Jean Vanderdonckt; Marcelo S. Pimenta
This paper presents the impact of the traceability from Business Process (BP) to User Interfaces (UI) in software requirements. The application of changes made on BP or on system UIs may have an impact on software requirements, which then requires updating related models in order to coherently enable changes. The goal of mapping software requirements with task models, as an extension to an existing traceability approach, is to guarantee that UIs are aligned with requirements. This paper proposes a traceability framework on how to map requirements with UI models and analyzes the impact of changes on models of business-driven enterprise applications.
Task patterns for e-government services BIBAFull-Text 276-279
  Flavio Miyamaru; Leonardo Leite; André Bertuzzi; Lucia Filgueiras
This paper intends to show that task patterns are a good solution for e-government services' interaction design. Task patterns are a convenient abstraction that can be used in association to lower-level interface patterns to create a sound basis for the design of user interfaces. In the e-government case, using a set of task patterns can help increase the consistency of applications and thus, favor the citizen learnability and understandability of government services. Task patterns are also useful if applications must be delivered in multiple devices.
Um sistema para criação de conteúdos em diversas plataformas a partir da experiência dos usuários BIBAFull-Text 280-283
  Marília Mendes; Ítalo Matos; Elizabeth Furtado; Oscar Mayora
This article shows a system in development that allows the creation of content from the integration of three platforms: mobile, Web and DTV. Also, we will show the process that made it possible its development. This user-centered process identified the needs and the value that this system would bring to users lives.
Uma interface multimodal para objetos de aprendizagem visualizados na TV digital BIBAFull-Text 284-287
  Fábio de Jesus Lima Gomes; José Valdeni de Lima; Rosane Aragon de Nevado
This paper proposes a paper interface, with the use of a barcode reader as Digital TV (DTV) interaction device. With the DTV, t-learning arises as an opportunity in order to promote the learning to a major amount of people than the traditional e-learning doesn't reach. But, the use of remote control in the DTV has resulted a complex viewer interaction that may cause the user's frustration and irritation and the ease of use is one of the most important factors in the DTV. This paper aims linking the common paper with DTV, in order to get better usabilility and promote more conditions to t-learning. A prototype was finished, and usability tests were carried out. The results show that the barcode reader can be used as DTV interaction device.
Uma proposta de organização do vocabulário de tags dos usuários de sistemas baseados em folksonomia BIBAFull-Text 288-291
  Filipe Roseiro Côgo; Sérgio Roberto P. da Silva
Folksonomy-based systems have recently experienced a relative success. However, due to the total freedom that such systems provide in its use, the users ended using tags which the associated vocabulary is improper to the purposes of retrieval and management of the categorized information. Thinking about this problems, in this paper we proposed the development of a method to suggest modifications in the set of tags of folksonomy-based system, trying to minimize the problems associated with the lack of control of the vocabulary used by users for the information categorization.
Using web scripts to improve accessibility BIBAFull-Text 292-295
  Chantal Intrator; Clarisse Sieckenius de Souza
This paper is about how added functionality to CoScripter, a macro recorder for the Web, can potentially improve accessibility for certain types of web sites. CoScripter enables its users to share automated web processes, and by so doing also share their interests in different sites. We propose a new web navigation approach based on CoScripter; with it users can browse shared scripts associated to various sites and decide which ones perform a task of interest. The ability to execute such scripts has the potential to not only accelerate web navigation (and showcase the services provided by the sites), but also the potential to be used for enhanced web accessibility. The paper reports the results of our preliminary studies on the path to turning CoScripter into a web accessibility resource.
Virtual presenter BIBAFull-Text 296-299
  Denise Hippler; José Mario De Martino
Virtual presenters have a great range of possible applications, like teachers, news presenters and guides of virtual environments, easing the interaction with computers. The animation control of such virtual characters is usually accomplished by an animation script describing all the movements to be performed. Writing a convincing animation script is a demanding and cumbersome task. To ease the animation process, we propose the additional use of a behavior model learned from a real presenter. The article presents the implementation of a 3D virtual news presenter that implicitly follows a behavior model and a script that describes the text to be uttered. The behavior model is given by a set of behavioral rules that represent common non-verbal facial movement patterns displayed by a real presenter whose TV appearances were analyzed.

Relatos de experiência na indústria

Design de interação para dispositivos móveis como ferramenta de apoio a pesquisas BIBAFull-Text 300-303
  Taissa Abdalla Filgueiras de Sousa; Luiz Agner
Mobile devices have been used as an important tool for data collection by surveys institutes of all over the world. They have replacing the traditional questionnaire of paper by this technology. The innovation makes it possible to reduce the period before the dissemination of results and also minimizes human errors while filling forms, among other advantages. IBGE was one of the first institutes to use PDA for this purpose in 2007 with Census and PNAD surveys. In PNAD survey the replacement of a tool demanded a study of the interaction interface, since the new system allowed the inclusion of facilitating elements. Several user teams were available to use the new tool and share their experiences and needs in a cooperative evaluation. The change has succeeded all over Brazil. Nevertheless, the interface design can still be improved for future surveys.
Integrando testes de usabilidade em projetos sigilosos BIBAFull-Text 304-307
  Victor Ximenes; Filipe Levi
Many software companies in Brazil have adopted usability engineering methods into their processes. However, one might find additional barriers in projects protected by nondisclosure agreements. In this report, we present our experience in integrating usability tests in a protected project, in the hope that usability practitioners in similar contexts might benefit from that learning.
Parceria universidade-empresa para inclusão digital BIBAFull-Text 308-311
  Alexandre Freire da Silva Osorio; Cláudia Povoas Schmidt; Robson Eudes Duarte
This paper aims reporting a partnership experience among a R&D center and three academic institutions. This partnership was demanded by a project of web services that intend to attract digital divided users through friendly and accessible interfaces. The potential users include illiterate and impaired people.
Prototipação de software e design participativo: uma experiência do atlântico BIBAFull-Text 312-315
  Carlos Rosemberg; Albert Schilling; Cristianne Bastos; Rodrigo Araripe
This work reports the Atlântico's experience with low fidelity prototyping used as the base of software requirements elicitation and validation process, through the participatory design approach. Techniques, lessons learned and results are detailed.

Demonstrações e pôsteres

CampusMates: encontrando parceiros de estudos BIBAFull-Text 316-317
  Cássio A. Melo
Recently observed social trends point to greater social approximation of individuals through technological platforms, as the increasing success of sites such as Orkut, MySpace, MSN, among others. The mobile social networks are also gaining adepts for having pervasives and customized features. In this demonstration, we show a concept of a mobile social network for students seeking study partners, the CampusMates.
Classificação da direção do olhar para interatividade humana utilizando processamento de imagens digitais BIBAFull-Text 318-319
  Helton Maia Peixoto; Sheyla de Farias Gomes; Allan de M. Martins; José Alfredo F. Costa
A visão possui muitos sensores responsáveis pela captação de informações que são enviadas ao cérebro. O olhar reflete a sua atenção, intenção e interesse. Sendo assim, a detecção da direção do olhar é uma alternativa promissora para a comunicação com a máquina. A aplicação de técnicas para detecção da direção do olhar tem a possibilidade de melhorar significativamente a capacidade de interação dos portadores de deficiências motoras com os computadores. O objetivo deste trabalho consiste em apresentar um sistema que utiliza técnicas de processamento digital de imagens para classificar a direção do olhar. Os resultados mostram as simulações realizadas com as técnicas de captura, processamento e classificação da direção do olhar em uma imagem.
Comunidade democrática cidadã (CDC): um ambiente para consulta e votação na web BIBAFull-Text 320-321
  Cristiano Maciel; Licinio Roque; Ana Cristina B. Garcia
Integrating consultative and deliberative environments for popular participation in democratic issues and creating virtual communities make it possible to model decisionmaking processes. Therefore, Democratic Citizenship Community -- CDC, was projected, developed and tested, based on the Government-Citizen Interactive Model. This paper shows this innovative e-democratic application.
Exposição virtual sobre pesquisa e desenvolvimento em design tipográfico BIBAFull-Text 322-323
  Felipe Stanque, Jr. Machado
É aqui apresentado o projeto de um ambiente virtual tridimensional para exposição sobre design tipográfico. Tal exposição virtual, desenvolvida com a ferramenta Quest3D, permite a interação reativa dos expectadores com os trabalhos expostos, frutos de pesquisas e projetos tipográficos desenvolvidos no curso de Design da Universidade Luterana do Brasil no campus de Carazinho, RS.
iFitPro: tecnologia interativa para a prática de atividades físicas BIBAFull-Text 324-325
  Anderson G. Silva; Bruno F. Marques; Diego N. Riff; Lucas A. Barreto; Rafael B. C. Santos
In attempt to alleviate the serious problem of inactivity, we propose an innovative technology that brings entertainment in the practice of physical activity. This technology introduces an aerobic training machine user in a 3D game using a virtual reality goggles, making their experience more pleasant and interactive.
Labbos: uma rede social para pesquisa colaborativa BIBAFull-Text 326-327
  Daniel F. Arcoverde; Cássio A. Melo; Raoni O. S. Franco
This paper presents Labbos, a proposal for a social network for researchers based on the concept of collaborative filtering. Labbos uses the technique of collaborative filtering to make recommendations on research groups and researchers who have similar interests to the user while he can interact with.
MEX -- modelo genérico de experiência do usuário: uma evolução conceitual BIBAFull-Text 328-329
  Carlos Rosemberg Maia de Carvalho
This paper presents an update on MEX (User Experience Generic Model), which was proposed with the aim to support the field study of interactive products and services experiences. The mentioned update refers to an inclusion of a new element in the model's structure, associated to the user's goals and activities during these experiences.
Mídia cruzada em serviços de governo: conceito e aplicação BIBAFull-Text 330-331
  Flavio Miyamaru; Leonardo Leite; André Bertuzzi; Lucia Filgueiras
Este documento descreve uma prova de conceito realizada para demonstrar o uso de mídia cruzada aplicada a serviços de governo. A prova de conceito foi construída com componentes de interface para plataformas de internet (desktop e celular) e para TV Digital baseados em padrões de tarefas levantados de serviços de governo e evidencia os aspectos de complementação, corroboração e concomitância da mídia cruzada.
Simulador do desempenho Humano S. PERERE BIBAFull-Text 332-333
  Thiago Henrique Cortez; Luiz Carlos Begosso
Frequently we observe that many problems in human computer interaction occur because interaction project didn't consider some points that conduced user to error. This paper presents S. PERERE (Simulator of Performance in Error), a human erroneous behavior computational simulator and its new task input way.
Solução interativa baseada em tela sensível ao toque BIBAFull-Text 334-335
  Eunice Gomes de Siqueira; Júlio Resende Ribeiro; Alexandre Franco de Magalhães; Patrícia Seda Barbone
O Photolog é uma solução interativa de software desenvolvida para o ramo de laboratórios de revelação, impressão e ampliação fotográfica digital. Toda a sua interface de usuário foi projetada com elementos capazes de propiciar uma interação visual e tátil adequada às pessoas usuárias de quiosques equipados com telas sensíveis ao toque.
TalkTV e TalkPC: soluções inteligentes em comunicação à distânciaAndré Mendonça, Artur Ribeiro, Breno Araújo, Eduardo Franklin, Rodrigo Freitas e Rodolfo Vasconcelos BIBAFull-Text 336-337
 
In this paper, we present a new way in which people can communicate over long distances. Many of the existing solutions today have disadvantages to the user in several aspects such as comfort, practicality and cost. This new way of communicating is presented by 2 products we developed: TalkPC and TalkTV. The first is a software that can be installed in any computer, while the second one is a device that can be attached to a television. Both send and receive audio and video streaming, so that a group of people can see other group, talking and seeing each other. For this to be made possible, a television or a computer is enough for each group of people. Both products were developed using the Internet as a transmission means, enabling the use of them free of charge after its acquisition.
The common sense-based educational quiz game framework "What is it?" BIBAFull-Text 338-339
  Alexandre Ferreira; Eliane Pereira; Junia Anacleto; Aparecido Carvalho; Izaura Carelli
This essay presents a common sense-based framework to configure web-based quiz educational games that aim at stimulating the learning contextualization and the knowledge construction in the learning process. Furthermore, it intends to collect common sense knowledge from teachers and learners who use the generated games. It is being developed a common sense-based quiz game framework called "What is it?" which brings common sense clues up the players' mind, aiming at working on a specific subject. The main purpose is that the game is to be used by teachers to work on subjects which have been approached in classroom.
TVMark: benchmarking para TV digital BIBAFull-Text 340-341
  Christian P. Brackmann; Cauane Blumenberg Silva; Paulo Roberto G. Luzzardi
This paper introduces the technology used in Digital TV of the Brazilian system, called SBTVD (Brazilian System of Digital Television), the interaction with viewers and the different standards available around the world at this moment. Making use of the Java programming language and Java's API JavaTV, made possible the development of a benchmarking program called TVMark. The application presents results of the amount of processing that the embedded system is capable and its limitations. The results can inform the programmer how much resource he can use on multimedia software. The final chapter shows some of the tests results using the developed tool.
Uma proposta de interface de usuário para Web 2.0 BIBAFull-Text 342-343
  Felipe Soares de Oliveira; Andre Felipe Palmeira; Andrew Anderson Chagas Câmara; Tatiana Aires Tavares; Guido Lemos de Souza Filho
In the past few years, we have been able to notice a changing process in the way that people consume online information on the Web. The advanced communication tools, as well the new functionalities of broadcast services, have been contributing to improve the information interactivity, and hence, the idealization of new interface models. In between, the Web 2.0, which changes the view on the web from mere computer network and services, to a social context, where the Web can be seen as a network of people composed of communities that collaborate and communicate with one another. Thinking about this, we proposed an interface prototype to the A3TV (Anytime, Anywhere and by Anyone TV), focusing on concepts like perception, communication and collaboration, all present in the Web 2.0. This platform intends to improve the Internet TV experience, providing content anywhere, anytime, and by anyone.
Zoomia: filtragem colaborativa de produtos a partir da leitura do código de barras BIBAFull-Text 344-345
  Cássio A. Melo
The lack of information and references about a product is often identified as a factor of frustration after the acquisition. In this demonstration, we present a concept of collaborative filtering associated with the use of barcode readers for mobile devices in order to publish and retrieve information about a product.

Tutorials

Aplicando conceitos e técnicas de serviços em IHC BIBAFull-Text 346-347
  Claudio Pinhanez
Este curso de 4 horas introduz e discute a aplicação de conceitos e técnicas de Ciência de Serviços no projeto, desenvolvimento e teste de interfaces computacionais, especialmente para serviços providos através da Internet (serviços online) como compras e reservas de produtos e serviços, busca de informações, solicitação de documentos, etc. Com as idéias e métodos aprendidos neste curso, profissionais de IHC estarão melhor capacitados a entender as particularidades de serviços, e a melhor projetar e avaliar interfaces para serviços.
Contribuições da engenharia semiótica para os métodos científicos de pesquisa em IHC BIBAFull-Text 348-349
  Clarisse Sieckenius de Souza; Carla Faria Leitão
IHC é uma disciplina jovem e há relativamente poucas teorias próprias e de amplo espectro propostas até hoje. A Engenharia Semiótica é uma destas teorias. Organizada de maneira completa há apenas poucos anos, ela foi inicialmente ilustrada com casos da prática profissional de IHC. Este tutorial apresenta seus aportes para a prática científica de IHC, no âmbito da Ciência da Computação.

Workshops

Aspectos da interação humano-computador na Web social BIBAFull-Text 350-351
  Sérgio Roberto P. da Silva; Roberto Pereira
In the last few years the Web has evolved from an environment for the publication and access of static pages to a platform of applications and to a complex and powerful communication environment. The Web 2.0 allowed the development of more interactive and innovative applications, collaborating for the appearance of the so called Social Web: a Web that connects people instead of pages. In this paper, we discussed about Web 2.0 and Social Web and propose the accomplishment of a Workshop to the presentation and discussion of works related to the impacts and challenges that the Social Web presents to the HCI community. Our goal is to effectively involve the HCI community to study the new challenges brought by Social Web to the research on HCI.
Usabilidade, acessibilidade e inteligibilidade aplicadas em interfaces para analfabetos, idosos e pessoas com deficiência BIBAFull-Text 354-355
  Claudia Tambascia; Ismael Ávila; Lara Piccolo; Amanda Meincke Melo
This article aims to present major issues to be discussed and debated at the workshop, related to aspects of usability, accessibility and intelligibility that could be applied in order to include in the information society, social and digitally excluded people, especially illiterate and elderly people, considering also aspects related to persons with disabilities.

Painel

HCI in Brazil: lessons learned and new perspectives BIBAFull-Text 358-359
  Clarisse Sieckenius de Souza; M. Cecilia C. Baranauskas; Raquel Oliveira Prates; Marcelo S. Pimenta
This IHC2008 (the Brazilian HCI symposium this year at Porto Alegre, Brazil) is a special occasion for our HCI community: we celebrate 10 years as an organized community. That is why we had a panel in the program with the above title. We invited some of the most prominent Brazilian HCI researchers -- Clarisse Sieckenius de Souza (PUC-Rio), M. Cecilia Calani Baranauskas (UNICAMP), Raquel Oliveira Prates (UFMG), moderated by Marcelo Soares Pimenta (UFRGS), all of whom have contributed to consolidating our community -- to address some issues which we believe are central to understanding HCI in Brazil. In an agile planning meeting, we decided to focus on: (i) Some historical steps that were crucial for the consolidation of the Brazilian HCI community; (ii) Some indications and challenges for the growing HCI culture in Brazil; and (iii) Some considerations about on the profile of Brazilian HCI research areas and groups and its relation with a Brazilian way of doing HCI.
   This text reviews and summarizes some of main ideas presented and discussed at the panel session.