Golem is an holonomic robot designed to be compliant with Robocup regulations for the middle-sized league. The project consists in three parts: mechanics and hardware, vision system and software. We adopted the universal three wheels model to achieve a great freedom of movement. In order to take advantage of this particular feature, the vision system has to give a full sight of the environment....

We study the quasistatic flow of a collection of rigid frictional disks pushed upward (against the gravity) inside a narrow vertical pipe by a compliant mechanism. The contact dynamics method was used for the numerical simulations in combination with a friction law at disk-disk and wall-disk contacts characterized by discontinuous velocity weakening from a static threshold to a dynamic coeffici...

A new approach for climbing hard vertical surfaces has been developed that allows a robot to scale concrete, stucco, brick and masonry walls without using suction or adhesives. The approach is inspired by the mechanisms observed in some climbing insects and spiders and involves arrays of microspines that catch on surface asperities. The arrays are located on the toes of the robot and consist of...

We characterize wave propagation along an infinitely long crack or conduit in an elastic solid containing a compressible, viscous fluid. Fluid flow is described by quasi-onedimensional mass and momentum balance equations with a barotropic equation of state, and the wall shear stress is written as a general function of width-averaged velocity, density, and conduit width. Our analysis focuses on ...

Today’s industrial product lines in the automotive and construction equipment domain face the challenge to show functional safety standard compliance and argue for the absence of failures for all derived product variants. The product line approaches are not sufficient to support practitioners to trace safety-related characteristics through development. We aim to provide aid in creating a safety...

The information security not only has become a relevant business subject but also a complex decision topic for non-technical people. Legal framework, monitoring security, best practices, standards compliance are part of the security solutions but they can become in the principal complexity affair. This paper shows a general security overview to converge in an initial functional security model i...

This research began with a question about addressing a broader range of accessibility issues in voting than the standards in the Voluntary Voting System Guidelines (VVSG) require. The VVSG standards cover accessibility for low vision, blindness, and cognitive disabilities. But what if anyone could mark their ballot anywhere, any time, on any device? While the likelihood of voters voting on thei...

Standards have had much importance in different fields of research in order to assure a certain quality of service in bilateral contracts. More specifically, in multi-agent systems performance standards may be used in order to articulate contracts among partners in environments dealing with uncertainty. However, little effort has been made on how to ensure standards compliance over time. In thi...

Quality assessment of audiovisual files is an important tool in many steps of the preservation workflow, as well as for use and access of archive material. Today mainly technical properties of the files can be checked, e.g. file integrity or standards compliance of file wrappers and encoded streams. Checking the audiovisual quality manually results in extremely high labor costs. In this work we...