Search results for "human–computer interaction"

Sociable Behaviors in Virtual Worlds

2011

When simulating three-dimensional environments populated by virtual humanoids, immersion requires the simulation of consistent social behaviors to keep the attention of the user/s while displaying realistic scenes. However, intelligent virtual actors still lack a kind of collective or social intelligence necessary to reinforce the roles they are playing in the simulated environment (e.g. a waiter, a guide, etc). Decision making for virtual agents has been traditionally modeled under self interested assumptions, which are not suitable for social multi-agent domains. Instead, artificial society models should be introduced to provide virtual actors with socially acceptable decisions, which are…

Translating and Networking in Virtual Learning Environments

2018

The chapter describes the experience of three projects carried out at the University of Latvia and their contribution to developing student skills for working in virtual networks. The research is carried out against the background of the rise of a community-based model in translation and increased involvement of virtual networks of translators in solving translation problems and the discussion of broader issues of the profession. The chapter describes the three projects, provides the approach and rationale for their development, dwells on problems faced in the projects and their solutions, as well as shares the lessons learned and recommendations for those who are interested in similar proj…

Complex objects modeling: An entity-relationship approach

1989

Facilities for complex object modeling are nowadays needed in several areas of database applications (CAD/CAM, office automation, robotics, ...). Consequently, either new models are developed, or existing ones are extended to better respond to this requirement. Current proposals in the latter category are mainly based on the relational approach (with, as major outcome, the NF2 family of models) or on functional models like DAPLEX. This paper intends to show that the entity-relationship approach may secure an equivalent result, preserving the well known advantages inherent to this approach : increased readability and graphical display of the database schema.

Computer Mediated Communication and Collaboration in a Virtual Learning Environment Based on a Multi-agent System with Wasp-Like Behavior

2008

In this paper is presented a model for an adaptive multi-agent system for dynamic routing of the grants' activities from a learning environment, based on the adaptive wasp colonies behavior. The agents use wasp task allocation behavior, combined with a model of wasp dominance hierarchy formation. The model we introduced allows the assignment of activities in a grant, taking into account the specialization of students, their experience and the complexity of activities already taken. An adaptive method allows students to enter in the Grant system for the first time. The system is changing dynamic, because both the type of activities and the students involved in the system change. Our approach…

Tabletop Role-Playing Games

2018

A Stigmergic Guiding System to Facilitate the Group Decision Process

2012

The paper presents a stigmergic approach to engineer a guiding system to facilitate the complex problem of designing the group decision processes. The system aims to provide contextual, actionable recommendations based on the knowledge and past experience of its users as recorded in a collaborative working environment implemented around the concept of stigmergic systems. Through an agent-based socio-simulation experiment we have demonstrated already the feasibility of this approach. The paper illustrates how the simulation results are transferred into a guiding system that facilitates the group decision process design through iterative queries reformulations for the identification, represen…

How Do Viewers Spontaneously Segment Animated Diagrams of Mechanical and Biological Subject Matter?

2012

A challenges for learning from animated diagrams is to first parse the continuous flow of information into discrete event units. Inadequacies in this parsing process can prejudice the quality of the mental model constructed from the depiction. One approach that has been proposed for ameliorating such problems is for the designer to pre-segment the animation. However, the pre-segmentation techniques used tend to be either intuitive or based on an expert's understanding of the subject matter. Neither of these approaches takes proper account of the psychological processing that must occur for an external animation to be properly internalized. This poster reports a study of the processes that l…

Small Sample Biometric Recognition Based on Palmprint and Face Fusion

2009

Contactless biometrics provide high comfort and hygiene in person recognition. Because of this, such systems are better accepted by the general public. This paper proposes an adaptive, contactless, biometric system which combines two modalities: palmprint and face. The processing chain has been designed to overcome embedded system constraints and small sample set problem: after a palmprint is extracted from a hand image, Gabor filters are applied to both the palmprint and face in order to extract parameters, which are then used for classification. Fusion possibilities are also discussed and tested using a multimodal database of 130 people designed by the authors. High recognition performanc…

Roadmap on 3D integral imaging: Sensing, processing, and display

2020

This Roadmap article on three-dimensional integral imaging provides an overview of some of the research activities in the field of integral imaging. The article discusses various aspects of the field including sensing of 3D scenes, processing of captured information, and 3D display and visualization of information. The paper consists of a series of 15 sections from the experts presenting various aspects of the field on sensing, processing, displays, augmented reality, microscopy, object recognition, and other applications. Each section represents the vision of its author to describe the progress, potential, vision, and challenging issues in this field.

Surgery of the Cranio-Vertebral Junction: Image Guidance, Navigation, and Augmented Reality

2019

Due to the density of essential, small, and mobile structures, mastering the surgical anatomy of the craniovertebral junction may be extremely challenging. Quality and safety of interventions can be improved using navigation. Currently, patient-specific anatomy preparation, surgical planning, intervention, and quality assessment are disconnected actions performed in different conditions and environments and by multiple team members. The whole process needs to be integrated by surgeons performing the intervention. The complexity of the process exposes to errors and degraded precision. It is therefore relevant to develop tools that reduce the need to extrapolate and simplify the information i…