topauthor: Pino_J* : Human-Computer Interaction Bibliography Search

[1] Estimating Production Time of Touchless Hand Drawing Gestures Pointing and Gesture Interaction / Erazo, Orlando / Pino, José; A. / Antunes, Pedro Proceedings of IFIP INTERACT'15: Human-Computer Interaction, Part III 2015-09-14 v.3 p.552-569

Keywords: Touchless hand gestures; Natural user interfaces; Predictive evaluation; User models

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Summary: Quantitative user models such as CLC, Isokoski's and KLM have been used to estimate the production time of mouse and pen interactions (pointing, clicking, selecting, drawing, writing). In this paper, we assess if these models can be adapted to estimate the production time of touchless hand gestures (air figures of letters and numbers). New parameters were added to the existing models with empirical values drawn from experiments with users. Two metrics were used to evaluate model quality: strength of the relationship between estimated and observed times, and percentage root mean square error. The obtained results support the hypothesis that CLC, Isokoski's and KLM can be adapted to touchless hand gestures. The paper contributes with model modifications and parameters required to estimate the production times of touchless hand gestures.

[2] Predicting Task Execution Time on Natural User Interfaces based on Touchless Hand Gestures Multimodal / Touch / Gesture / Erazo, Orlando / Pino, José; A. Proceedings of the 2015 International Conference on Intelligent User Interfaces 2015-03-29 v.1 p.97-109

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Summary: Model-based evaluation has been widely used in HCI. However, current predictive models are insufficient to evaluate Natural User Interfaces based on touchless hand gestures. The purpose of this paper is to present a model based on KLM to predict performance time for doing tasks using this interface type. The required model operators were defined considering the temporal structure of hand gestures (i.e. using gesture units) and performing a systematic bibliographic review. The times for these operators were estimated by a user study consisting of various parts. Finally, the model empirical evaluation gave acceptable results (root-mean-square error = 10%, R2 = 0.936) when compared to similar models developed for other interaction styles. Thus, the proposed model should be helpful to software designers to carry out usability assessments by predicting performance time without user participation.

[3] Monitoring Student Activities with a Querying System over Electronic Worksheets / Baloian, Nelson / Pino, Jose A. / Hardings, Jens / Hoppe, Heinz Ulrich CRIWG 2014: Collaboration and Technology 2014-09-07 p.38-52

Keywords: Monitoring students' work; automatic assessment; improving classroom teaching; architectures for educational technology systems; group workspace awareness

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Summary: Monitoring students' work in the classroom has been recognized as one of the key factors for successful teaching since only a good real-time assessment enables the teacher to give proper and timely feedback. However, it is not an easy task to systematically supervise what students do in the classroom. It also might consume a considerable amount of teachers' resources. This paper presents a work in which computer technology is used in classrooms by students working on electronic worksheets on their. We explore the possibilities of assessing students' work during classroom by automatically analyzing the structure of the documents and the changes along time while students work on them. An experiment is described, showing the system is able to give the teacher valuable information. This information is intended to assess the students' performance and provide them with proper feedback.

[4] Cooperative Work for Spatial Decision Making: An Emergencies Management Case / Frez, Jonathan / Baloian, Nelson / Pino, Jose A. / Zurita, Gustavo CRIWG 2014: Collaboration and Technology 2014-09-07 p.113-120

Keywords: Collaborative decision support; GIS; Emergency management

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Summary: Geographical Information systems have been frequently used to support decision processes, especially those involving emergency management. When planning the measures in case of an emergency experts must evaluate and compare many scenarios which arise from different hypotheses about where people may be at the time of the emergency and how will they react. This work presents a tool which can help a group of experts in generating, visualizing and comparing the outcomes of the different hypotheses.

[5] Analyzing touchless hand gestures performance Interaction with Gestures / Erazo, Orlando / Pino, José; A. Proceedings of ChileCHI'13: Chilean Conference on Human-Computer Interaction 2013-11-11 p.14-17

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Summary: As part of a Natural User Interface we can use human body gestures, although they must be evaluated to get better results. We can evaluate them using a quantitative model. For this purpose, we begin the gesture analysis of touchless hand gestures with this work. Our analysis is based on significant gesture attributes. From the large number of possible attributes we select the trajectory. We propose to describe the trajectory by using distance units and directions. We then evaluate our proposal with two gesture data sets. We found that the proposal can be used to describe and quantify gesture trajectories. Moreover, we found that well-defined changes of directions (or corners) influence the speed for performing a gesture, thus users need more time to execute the gesture. The proposed method allows a trajectory to be quantified in a simple manner.

[6] Using unconventional awareness mechanisms to support mobile work Providing Awareness in Real Environments / Monares, Alvaro / Ochoa, Sergio F. / Pino, José; A. / Ruiz-Lopez, Tomás / Noguera, Manuel Proceedings of ChileCHI'13: Chilean Conference on Human-Computer Interaction 2013-11-11 p.42-47

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Summary: Awareness mechanisms are normally used to deliver context information to computer systems users. These mechanisms have been extensively studied as part of collaborative solutions designed for stationary scenarios, and recently on mobile and pervasive applications. The conventional awareness mechanisms through audio or visual messages have proved to be frequently unsuitable to deliver context information to people performing mobile activities, since the user's attention is not focused on the device he/she is using. This article presents two studies exploring the use of unconventional awareness mechanisms as a way to provide context information to firefighters during urban emergencies. In particular, the effectiveness of using the haptic and smell channels is evaluated as a way to implement direct and indirect capturers of the mobile workers' attention. The obtained results hint that both channels could be used to improve the information delivery. However, the awareness mechanisms that use the haptic channel are much more effective and allow implementing a more diverse set of messages. These awareness mechanisms can be used not only during emergency responses but also in other similar mobile work scenarios.

[7] Tablet gestures as a motivating factor for learning Improving Usability: Design, Evaluation, Learning / Baloian, Nelson / Pino, José; A. / Vargas, Roberto Proceedings of ChileCHI'13: Chilean Conference on Human-Computer Interaction 2013-11-11 p.98-103

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Summary: The literature reports about using computer to support learning activities from as early as they become commercially available. It also shows that educational technologists are eager to try the latest computer technology released for corporative or household usage in the educational area. The last example of this tendency has been the tablet, and among the many available models today the iPad seems to be the most preferred.

[8] Identifying the Awareness Mechanisms for Mobile Collaborative Applications Collaboration Design / Herskovic, Valeria / Ochoa, Sergio F. / Pino, José; A. / Antunes, Pedro / Ormeño, Emilio CRIWG 2013: Collaboration and Technology 2013-10-30 p.241-256

Keywords: Mobile collaboration; awareness mechanisms; software design; users interaction; system evaluation

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Summary: The complexity of modeling collaborative systems has been broadly recognized by the CSCW community. Mobile collaborative applications are a particular case of those systems, where design requirements and constraints are even more complex than in stationary solutions. Design complexity in mobile application increases because mobility changes the interaction requirements of nomadic users and the capabilities of devices to support them. Consequently, the awareness support provided by these systems should also be adjusted according to the nomadic users' context. This article presents a method that helps identifying the awareness mechanisms required by nomadic users to support a certain activity. The method, named Awareness Identification Method for Mobile Applications (AIMMA), suggests particular awareness components embedded in mobile collaborative applications, which will increase the interaction possibilities of users participating in a collaborative process. AIMMA can be used by software developers as a design guideline. This article reports the results of a proof of concept where the proposed method helped identifying suitable awareness mechanisms to improve the collaboration support of a mobile application. This method could also be extended to help identify, e.g., the services required by mobile workers to support their interactions.

[9] Formal Modeling of Multi-user Interfaces in Cooperative Work Formal Models and Technical Approaches / Weyers, Benjamin / Luther, Wolfram / Baloian, Nelson / Pino, José; A. CRIWG 2012: Collaboration and Technology 2012-09-16 p.129-136

Keywords: Multi-user interfaces; mobile cooperative work; formal UI models

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Summary: Support systems for cooperative work lack consistent modeling tools for user interface creation and execution that are flexible enough to combine both data processing and the logical aspects of a user interface and, at the same time, dialog and cooperation modeling aspects. This paper introduces a new concept to model user interfaces for cooperative work: the so-called multi-user interfaces aimed at distributed scenarios involving mobile devices implementing cooperative work. These multi-user interfaces are modeled in a hierarchical structure of dialog models and interaction logic based on a formal modeling language called FILL. For execution and verification, FILL models are automatically transformed to reference nets, a type of Petri nets, making the entire user interface and cooperation model accessible to simulation and verification tools. This new approach seeks to integrate more closely modeling and implementation based on a formalized interface design and user-machine dialogue. Formal graph rewriting concepts allow both the user interface and the collaboration model to be easily adapted in various ways by the modeler or user.

[10] A Review of CRIWG Research Introduction / Antunes, Pedro / Pino, José; A. CRIWG 2010: Collaboration and Technology 2010-09-20 p.1-15

Keywords: Meta-analysis; CRIWG review

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Summary: This paper presents a meta-analysis of the CRIWG conference. The study is organized in three main sections: bibliometric analysis, analysis of references and subject analysis. The bibliometric analysis indicates that CRIWG is significantly above the average citation index of similar papers published in LNCS. The analysis of references shows a significant dependence on ACM papers and very low cross-referencing between CRIWG papers. The subject analysis reveals that CRIWG slightly favors positivist evaluations, although almost half of the papers do not present any type of evaluation. We conclude this study with a discussion over strengths, weaknesses, opportunities and threats.

[11] Awareness Checklist: Reviewing the Quality of Awareness Support in Collaborative Applications Awareness / Antunes, Pedro / Sapateiro, Cláudio / Pino, José; A. / Herskovic, Valeria / Ochoa, Sergio F. CRIWG 2010: Collaboration and Technology 2010-09-20 p.202-217

Keywords: Awareness Inspection; Collaborative Applications

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Summary: A proposal of a method to assess awareness support is made. This proposal is intended for the use of collaborative applications developers at any time during development. It consists of a checklist. It is made with the inclusion of design elements obtained by the analysis of Quality Assurance ideas applied to collaborative systems. The proposal is illustrated with its use in two cases.

[12] A Simple and Portable Command Post to Coordinate Search and Rescue Activities in Disaster Relief Efforts Mobile Collaboration / Bartels, Rodrigo / Herskovic, Valeria / Monares, Alvaro / Ochoa, Sergio F. / Pino, José; A. / Borges, Marcos R. S. CRIWG 2010: Collaboration and Technology 2010-09-20 p.337-344

Keywords: Portable command post; search and rescue; coordination activities; information support; mobile workers support; low-cost system

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Summary: The lack of communication channels and support information can make the critical search and rescue of survivors after a disaster an ineffective process resulting in losses. This work addresses this problem by proposing a simple and portable command post application based on mobile devices and ad-hoc networks. The application provides support to communication and collaboration aiming to speed up the SAR process. The system architecture and some implementation issues are also presented.

[13] Building Real-World Ad-Hoc Networks to Support Mobile Collaborative Applications: Lessons Learned Mobile Collaboration / Messeguer, Roc / Ochoa, Sergio F. / Pino, José; A. / Medina, Esunly / Navarro, Leandro / Royo, Dolors / Neyem, H. Andrés CRIWG 2009: Groupware: Design, Implementation, and Use 2009-09-13 p.1-16

Keywords: Mobile Collaboration; Communication Support; Wireless Networks

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Summary: Mobile collaboration is required in several work scenarios, i.e. education, healthcare, business and disaster relief. The features and capabilities of the communication infrastructure used by mobile collaborative applications will influence the type of coordination and collaboration that can be supported in real work scenarios. Developers of these applications are typically unaware of the constraints the communication infrastructure imposes on the collaborative system. Therefore, this paper presents an experimental study of how ad-hoc networks can effectively support mobile collaborative work. The article analyzes several networking issues and it determines how they influence the collaborative work. The paper also presents the lessons learned and it provides recommendations to deal with the networking issues intrinsic to ad-hoc networks.

[14] Increasing Opportunities for Interaction in Time-Critical Mobile Collaborative Settings Mobile Collaboration / Herskovic, Valeria / Mejia, David A. / Favela, Jesús / Morán, Alberto L. / Ochoa, Sergio F. / Pino, José; A. CRIWG 2009: Groupware: Design, Implementation, and Use 2009-09-13 p.41-48

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Summary: The critical nature of some working environments, such as hospitals or search and rescue operations, gives rise to the need for timely collaboration. However, interactions are not always possible since potential collaborators may be unreachable because of the lack of a communication channel to carry out the interaction or due to their involvement in other activities. The use of adequate interaction facilitators may allow users to collaborate even in these circumstances. This paper presents a characterization of this type of situation and then introduces a set of design suggestions that may help improve opportunities for user interaction in time critical mobile collaborative settings.

[15] Communication Patterns to Support Mobile Collaboration CSCW Design / Neyem, H. Andrés / Ochoa, Sergio F. / Pino, José; A. CRIWG 2009: Groupware: Design, Implementation, and Use 2009-09-13 p.270-277

Keywords: Communication patterns; mobile collaboration

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Summary: The mobility of the collaborators, the diverse technologies available to support them and the continuous change in the collaboration scenarios bring new challenges to design, implement, and reuse communication software for these complex systems. This article presents a design patterns system to help modeling the communication services required to support mobile collaboration. These patterns serve as educational media for developers, students or researchers on how to design communication services for mobile collaborative applications. The patterns also foster the reuse of proven solutions.

[16] Evaluating Design Concepts to Support Informal Communication in Hospitals through the Development of a Tool Based on an Iterative Evaluation HCD at Work / Mejia, David A. / Morán, Alberto L. / Favela, Jesús / Ochoa, Sergio F. / Pino, José; A. HCD 2009: 1st International Conference on Human Centered Design 2009-07-19 p.1013-1022

Keywords: Groupware evaluation; design concepts; informal communication

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Summary: The evaluation of groupware systems is considered a complex activity, mainly due to the impact that this kind of tools could have in work practices, the multiples variables that influences the use and evaluation of them, as well as the expensive cost of time and resources required for an in situ evaluation. These reasons have complicated the generation of a generic guide for evaluating this type of tools. Some researchers in groupware evaluation have highlighted the need to evaluate groupware tools, according to the context and characteristics of those organizations in which these tools would be deployed. Thus, in this paper we present a process to evaluate a tool that supports informal collaboration in hospital. Due to nature of hospital work and the difficulty of performing an in situ evaluation, our proposal implies a multi-phase evaluation process through the development lifecycle of the tool.

[17] Coordination Patterns to Support Mobile Collaboration Mobile Applications / Neyem, H. Andrés / Ochoa, Sergio F. / Pino, José; A. CRIWG 2008: Groupware: Design, Implementation, and Use 2008-09-14 p.248-265

Keywords: Coordination patterns; groupware mobile applications; design guidelines; mobile collaboration

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Summary: The increasing popularity of portable devices and advances in wireless communication technologies push the development of mobile groupware applications. Mobile applications are challenging for software designers because the use of centralized components is not recommended, the communication service cannot be ensured and the software must run on computer devices with little hardware resources. Frequently, data and services interoperability is also required for collaborators. A design patterns system is presented as a way to deal with these modeling requirements; it is intended to help modeling the coordination services required to support mobile collaboration. These patterns serve as educational and communicative media for developers, students or researchers on how to design services for mobile collaborative applications. They also foster the reuse of proven solutions.

[18] Designing Mobile Shared Workspaces for Loosely Coupled Workgroups Groupware Design and Development / Neyem, H. Andrés / Ochoa, Sergio F. / Pino, José; A. CRIWG 2007: Groupware: Design, Implementation, and Use 2007-09-16 p.173-190

Keywords: Mobile shared workspaces; groupware design guidelines; loosely coupled work

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Summary: Recent advances in mobile computing devices and wireless communication have brought the opportunity to transport the shared workspace metaphor to mobile work scenarios. Unfortunately, there are few guidelines to support the design of these mobile shared workspaces. This paper proposes a design process and several guidelines to support the modeling of these groupware systems. Particularly, workspaces that support loosely coupled workgroups. The process and guidelines are based on a literature review and authors' experience in the development of mobile shared workspaces.

[19] Evaluation Methods for Groupware Systems Groupware Activities and Evaluation / Herskovic, Valeria / Pino, José; A. / Ochoa, Sergio F. / Antunes, Pedro CRIWG 2007: Groupware: Design, Implementation, and Use 2007-09-16 p.328-336

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Summary: Evaluation of collaborative systems is necessary in several situations. However, evaluation is frequently done in an ad-hoc manner or not at all. This paper presents a survey of evaluation methods for groupware systems. The analysis, comparison and classification of these methods will help developers choose the appropriate methods for their situation. Furthermore, the survey allows identification of strengths and weaknesses of existing methods, opening opportunities for research in this area. The proposed comparison criteria represent a framework to evaluate and classify new evaluation methods.

[20] Analyzing Shared Workspaces Design with Human-Performance Models Collaborative Applications and Group Interaction / Antunes, Pedro / Ferreira, Antonio / Pino, José; A. CRIWG 2006: Groupware: Design, Implementation, and Use 2006-09-17 p.62-77

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Summary: We propose an analytic method to evaluate synchronous shared workspaces design. The method uses human-performance models, developed in the Human-Computer Interaction field, to make time predictions about collaborative actions performed in selected critical scenarios. We apply this method to two case studies: the design of a collaborative game and the redesign of a collaborative tool for software engineering requirements negotiation. The benefits and limitations of the method are discussed, as well as some implications for design.

[21] Supporting Mobile Collaboration with Service-Oriented Mobile Units Groupware Development Frameworks and Toolkits / Neyem, H. Andrés / Ochoa, Sergio F. / Pino, José; A. CRIWG 2006: Groupware: Design, Implementation, and Use 2006-09-17 p.228-245

Keywords: Middleware for Mobile Groupware; Service-Oriented Mobile Units; Web services Platform; Ad-hoc Collaboration Scenarios

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Summary: Advances in wireless communication and mobile computing extend collaboration scenarios. A current strategy to address productive, educational and social problems is to incorporate mobile workers using computing devices into work practices. Typically, collaborative applications intended to support mobile workers involve some type of centralized data or services. This situation constrains the collaboration capabilities, particularly in ad-hoc communication scenarios. We propose an autonomous software module able to provide and consume services from others units. We call it a Service-Oriented Mobile Unit (SOMU). A SOMU has been implemented as a middleware running on laptops and PDAs. Collaborative mobile applications developed on this middleware are then able to interact among them almost in any communication scenario. Availability of this tool is particularly relevant to support mobile collaboration when there is no stable communication support or no communication at all.

[22] Collaboration for Learning Language Skills Computer Supported Collaborative Learning / Guerrero, Luis A. / Madariaga, Milko / Collazos, César A. / Pino, José; A. / Ochoa, Sergio F. CRIWG 2005: Groupware: Design, Implementation, and Use 2005-09-25 p.284-291

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Summary: A Collaborative activity is designed and a software tool is developed to support teaching grammar to primary education students. The activity is intended to create interdependencies among students. The software tool helps to implement the activity. Activity and tool were designed for teaching Spanish grammar, but they can be adapted for teaching other languages.

[23] Sharing Information Resources in Mobile Ad-hoc Networks Mobile Collaborative Work / Neyem, H. Andrés / Ochoa, Sergio F. / Pino, José; A. / Guerrero, Luis A. CRIWG 2005: Groupware: Design, Implementation, and Use 2005-09-25 p.351-358

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Summary: Many people are sharing digital resources through networks in order to facilitate, enhance or improve collaborative work. Information sharing is not only important to support collaborative work but it also represents the basis for design and implementation of solutions for typical design aspects of groupware applications, such as: floor control, group memory, shared objects replication and sessions and users management. Advances in mobile technology have extended the sharing information scenarios to Mobile Ad-hoc Networks (MANETs), which has brought new challenges. This paper presents a simple service platform to share information resources among members of a MANET-supported groupware session. People interact using notebooks and PDAs. In addition, a shared presentation tool which has been developed using the services of the platform is described. This presentation tool can be used to assist other collaborative activities, such as: technical presentations, casual interactions, meetings for decision making and software technical reviews.

[24] Bridging the Gap Between Decisions and Their Implementations Support for Collaboration Processes / Borges, Marcos R. S. / Pino, José; A. / de Araujo, Renata Mendes CRIWG 2004: Groupware: Design, Implementation, and Use 2004-09-05 p.153-165

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Summary: Decisions are frequently sent to implementers without much detail. It should not be a surprise, then, that results are not as expected. The lack of accompanying information and a common context produces wrongly implemented or lost decisions. This paper proposes a solution to this problem based on computer technology. In particular, a combination of tools including shared workspaces, process modeling with workflow and a discussion tool, is proposed. A case is used to illustrate the problem and its solution.

[25] Implementing Stick-Ons for Spreadsheets Collaboration Applications / Chan, Shermann S.-M. / Pino, José; A. CRIWG 2004: Groupware: Design, Implementation, and Use 2004-09-05 p.206-214

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Summary: Spreadsheet systems were initially intended for individual use. Collaborative use implies there should be a local versioning mechanism. As such, it is proposed to use a modified Stick-On. This means to define them to cope with the wide variety of data types, which can be associated to spreadsheet cells. The proposed design includes a hierarchy of these new Stick-Ons, a Field Dependency Graph and a Peer Referencing Mechanism.