Adriana Peña Pérez Negrón

Comparative analysis of shape descriptors for 3D objects

One of the basic characteristics of an object is its shape. Several research areas in mathematics and computer science have taken an interest in object representation in both 2D images and 3D models, where shape descriptors are a powerful mechanism enabling the processes of classification, retrieval and comparison for object matching. In this paper, we present a literature survey of this broad field, including a comparative analysis based on the above shape descriptor processes. In view of their significance, we identified the shape descriptors implemented using the concept of visual salience. This paper gives an overview of this topic.One of the basic characteristics of an object is its shape. Several research areas in mathematics and computer science have taken an interest in object representation in both 2D images and 3D models, where shape descriptors are a powerful mechanism enabling the processes of classification, retrieval and comparison for object matching. In this paper, we present a literature survey of this broad field, including a comparative analysis based on the above shape descriptor processes. In view of their significance, we identified the shape descriptors implemented using the concept of visual salience. This paper gives an overview of this topic.

Nonverbal interaction contextualized in collaborative virtual environments

Like other communication media, a Collaborative Virtual Environment (CVE) enables interaction under certain characteristics. Here, the main display of nonverbal cues is through a graphical representation of the user in a computer-created environment; in such a way that nonverbal behavior in CVEs varies, not only because of the people and the scenario involved as in a face-to-face situation, but also because of technical and design issues. In order to present an overview of the nonverbal interaction conditions in this technology, the study of nonverbal interaction in face-to-face situations is here contextualized in CVEs.Like other communication media, a Collaborative Virtual Environment (CVE) enables interaction under certain characteristics. Here, the main display of nonverbal cues is through a graphical representation of the user in a computer-created environment; in such a way that nonverbal behavior in CVEs varies, not only because of the people and the scenario involved as in a face-to-face situation, but also because of technical and design issues. In order to present an overview of the nonverbal interaction conditions in this technology, the study of nonverbal interaction in face-to-face situations is here contextualized in CVEs.

The Users' Avatars Nonverbal Interaction in Collaborative Virtual Environments for Learning

In a Collaborative Virtual Environment (CVE) for learning, an automatic analysis of collaborative interaction is helpful, either for a human or a virtual tutor, in a number of ways: to personalize or adapt the learning activity, to supervise the apprentices’ progress, to scaffold learners or to track the students’ involvement, among others. However, this monitoring task is a challenge that demands to understand and assess the interaction in a computational mode.

Collaborative Interaction Analysis in Virtual Environments Based on Verbal and Nonverbal Interaction

Similar to real life, in a Collaborative Virtual Environment the users’ interaction is accomplished not only by the verbal channel. The response to a request can be an action; also the users’ avatars body movements such as pointing or their gazes’ direction are helpful to send messages that may complement or even substitute verbal communication. In this paper we propose to extend the Sentence Opener approach, by which the intention of the verbal message is identified, with nonverbal communication analysis for a better collaborative interaction comprehension. This automatic analysis will provide an autonomous virtual tutor, with the tools to scaffold interaction during a training situation, for a task of socio-technical nature in a Collaborative Virtual Environment.

Mexican Spanish Affective Dictionary

In the study of Affective Computing, the lexicon-based approach represents a useful mechanism that consists on using rated words to understand their affective role in a conversation. One of the most used lists of affectively rated words is the Affective Norms for English Words (ANEW), which evaluates the dimensions of pleasure, arousal and dominance for the English language. This list has been translated for other languages such as German or Spanish with effective results; however, there is not an affective lexicon for Mexican Spanish, rated by Mexicans. Based on the ANEW methodology, but using the most frequently words in Mexican Spanish language, similar to emoticons figures for the evaluation and an ad hoc app to collect the data, a list with means and standard deviation for Mexican Spanish words was obtained. Results and main differences with the ANEW study are here discussed.

Proposal of a Model for the Development of Labor Competencies Based on Serious Games in the Context of Industry 4.0

Nowadays, the importance of video games in education is undeniable. The benefits of using video games for classroom instruction have been proven in many studies. Active learning methods promote the development of skills that simulate real-life situations and problems, help managing costs more effectively and generate interest and involvement in employees. However, these benefits have not been broadly explored in some domains, as is the industry case. In this paper is presented a learning model based on serious games, thought-out to industrial production plants, like an a viable alternative for the development of labor competencies.

Framework for the Analysis of Smart Cities Models

Smart cities evolution forces auto adjustments. A constant change that difficult methodologies and tools development aimed to measure and evaluate the huge number of variables involved. The Smart City metrics model is composed by its determined key performed indicators (KPI); with different aims a number of models have been proposed by different organizations, which difficult its comparison. In this paper, we propose a framework to apply Data Science to KPIs from Open Data. This framework is organized by a set of tools: a KPI tree structure; a JSON document; a web app with non-supervised or supervised knowledge for the models evaluation; and the infrastructure for reports reception and attention. In such a way that this framework creates an infrastructure that goes from the treatment of Open Data to models evaluation and its management.

ISO/IEC 29110 and curricula programs related to Computer Science and Informatics in Mexico: Analysis of practices coverage

Matching the software industry requirements with the academy training represents a significant problem that must be addressed. In this context, Computer Science students should acquire at the universities the knowledge required to work under organizations environment especially related to the use of models and standards for improving their quality and productivity. This is a key challenge in very small entities (VSEs) and small and medium enterprises (SMEs), because their limitations in time, budget and human resources. This paper presents an analysis of coverage between ISO/IEC 29110 standard, which is used for software industry to ensure quality in Software Engineering practices in VSE, and four academic curricula programs of higher education related to Computer Science and Informatics. The results show some gaps in the Mexican curricula programs that can be reinforced to provide engineers with the knowledge and abilities regarding the use of software engineering best practices, expected in VSE and SME using ISO/IEC 29110. Besides, the analysis shows why ISO/IEC 29110 is easily implemented in this type of organizations.

Efectos de la interacción verbal en el desempeño de tareas cooperativas

En este trabajo se evaluo el efecto de permitir o restringir la interaccion verbal entre diadas de participantes al realizar tareas cooperativas. Se analizo si el desempeno en la resolucion de las tareas se vio afectado por las interacciones verbales de los participantes. La situacion experimental (tarea) consistio en el armado de figuras tridimensionales en dos computadoras conectadas a traves de internet. Para cada uno de los dos grupos experimentales, fueron asignados al azar 16 estudiantes universitarios. Un grupo tuvo que resolver la tarea sin la posibilidad de comunicacion verbal, mientras que el otro grupo no tuvo tal restriccion. Se observo que en las condiciones con posibilidad de interaccion verbal, los participantes fueron mas eficientes que en las condiciones en las que no se les permitio comunicarse. En el grupo con posibilidad de interaccion verbal, se encontro que la mayoria de los participantes realizo comentarios directivos, aunque al parecer esto no afecto la eficiencia en el desempeno. En este trabajo se discuten los hallazgos en terminos del tipo de respuesta requerido en la tarea, del papel del lenguaje en las interacciones y de las relaciones establecidas entre los participantes involucrados, los que podrian facilitar la ejecucion de tareas cooperativas.

Analysis of Coverage of Moprosoft Practices in Curricula Programs Related to Computer Science and Informatics

In Mexico, the small and medium size companies (SMEs) are key for the software development industry, in such a way that having highly qualified personal for the development of high quality software products is a fundamental piece to guarantee their permanency in the market. Therefore, matching the software industry requirements with the academy training represents a big problem that must be reduced for the benefit of both sectors. In this context, to understand the coverage of the academic curricula programs in higher education, regarding the software industry requirements is a fundamental aspect to take actions to reduce the current gap between industry and academy. This paper presents an analysis of coverage between Moprosoft norm, standard used for software industry to ensure quality in Software Engineering practices, and four academic curricula programs of higher education related to Computer Science and Informatics.