A data modeling perspective on computer support for collaborative writing is given. In particular, the problem is identified as a temporal database application. The solution proposed is based upon a design system architecture the repository of which uses the GENREG historical data model. GENREG uses event graphs to provide a group memory. Nodes represent the design objects (documents, reference...

Various recent developments in Collaborative Networks (CNs) attempt to model a number of aspects that are characterized by an inherent imprecision and incompleteness of information. In fact, collaborative networks are complex entities whose proper understanding, design, implementation, and management require the integration of different modeling perspectives and techniques. Perspectives related...

The modeling of plants is an active area of research in computer graphics and the geometrical modeling of veins is essential for obtaining plant images with a realistic appearance. The venation patterns determine the anisotropy of plant tissues, and affect the shadowing and masking of light incident on these tissues, hence the images. The current trend in the area of plant image generation is t...

Estimating a driver’s head pose is an important task in driver-assistance systems because it can provide information about where a driver is looking, thereby giving useful cues about the status of the driver (i.e., paying proper attention, fatigued, etc.). This study proposes a system for estimating the head pose using monocular images, which includes a novel use of backprojection. The system c...

The increasing market turbulence and the increasing need for the creation of competitive advantages force businesses to rethink the way they perform their business. This rethinking is often performed unstructured or fragmented, and they fail to consider the business as a whole. Therefore there is a need for making a diagnosis as a basis for redesigning the business. In order to perform this dia...

In this paper, we address the problem of minimizing the negative influence of undesirable things in a network by blocking a limited number of nodes from a topic modeling perspective. When undesirable thing such as a rumor or an infection emerges in a social network and part of users have already been infected, our goal is to minimize the size of ultimately infected users by blocking k nodes out...

Abstract. To achieve sparse parametrizations that allows intuitive analysis, we aim to represent deformation with a basis containing interpretable elements, and we wish to use elements that have the description capacity to represent the deformation compactly. To accomplish this, we introduce in this paper higher-order momentum distributions in the LDDMM registration framework. While the zeroth ...

The basic notions in e-commerce are communicative, institutional, and deontic notions such as obligation, responsibility, and trust. The Language Action approach, therefore, seems to be a most promising framework for designing e-commerce systems. However, the penetration of the Language Action approach in industrial practice is still limited. We discuss some reasons for this state of affairs by...

The discovery of contextually relevant web services is crucial to business organisations. Pragmatics (in terms of communication acts) and semiotics (the understanding of signs), intersect at an important point in relation to textual entities. The intersection of pragmatics and semiotics provides the fabric essential to model the interaction between humans and norm-based agents by moving beyond ...

Understanding the causes and effects of species invasions is a priority in ecology and conservation biology. One of the crucial steps in evaluating the impact of invasive species is to map changes in their actual and potential distribution and relative abundance across a wide region over an appropriate time span. While direct and indirect remote sensing approaches have long been used to assess ...