This article presents a simulation study to control a human arm motion using muscle excitations as inputs. Our simulation implements the musculoskeletal model Arm26 provided in OpenSim which has 2 DOF and 6 muscles as actuators. First, in order to drive the limbs’ motion to track a desired trajectory, we propose an Adaptive Sliding Mode Controller (ASMC) to compute the necessary driving moments...

This paper presents a learning analytics framework for 3D educational virtual worlds that focus on discovering learning flows and checking its conformance through process mining techniques. The core of this framework is an Opensim-based virtual world platform, known as OPENET4VE, that is compliant with the IMS Learning Design specification and that has the ability of monitoring and registering ...

Al analizar los distintos métodos para tratar una lesión lumbar, el tratamiento por medio de antiinflamatorios y opioides, así como uso exoesqueletos en más avanzado casos, se observa que no existen muchos dispositivos puedan utilizar la prevención estas las ortesis actuales están enfocadas a dolor o bien ofrecer algún tipo rehabilitación. La presente investigación tiene finalidad un análisis e...

More and more researchers in a variety of fields are turning to virtual worlds for 3D simulations and scientific modeling. The use of virtual worlds in this manner offers many benefits. However, the critical task of creating 3D objects for a simulation model is still a manual process, which can be time consuming. Our research concentrates on creating a process that allows for the automatic popu...

Virtual worlds are mostly inaccessible to blind users, due to their exclusively graphical interfaces. We developed the Perspective viewer for Second Life and OpenSim virtual worlds, which enables blind users to explore and navigate Second Life virtual worlds with relative ease. The Perspective viewer allows different tools to be modularly added to the viewer, to enable comparison amongst differ...

With the range of educational tools available it is now realistic for learner models to take account of broader information, and there are strong arguments for placing open learner models in the centre of environments with diverse sources of data [1],[2],[3]. This Interactive Event will demonstrate the Next-TELL approach to facilitating teachers’ use of data from a variety of sources, and will ...

Several opensource or commercially available software platforms are widely used to develop dynamic simulations of movement. While computational approaches are conceptually similar across platforms, technical differences in implementation may influence output. We present a new upper limb dynamic model as a tool to evaluate potential differences in predictive behavior between platforms. We evalua...

Simulation of high flexion tasks such as squatting is hindered through invalid moment length estimation when using generic musculoskeletal (MSK) models. The purpose of this study was to examine the effect of wrapping surface (WS) at the knee and hip joints on the muscle moment arms calculated using a MSK model during squatting tasks. A generic full body model was modified by (1) increasing knee...

—The inclusion of remote experiments on mobile devices is a reality. Combining mobility and remote experimentation, it is intended to minimize the space-time barrier, providing faster access to information and so seek to encourage these students to continue their studies in careers in technology and engineering. The technologies presented in this paper has implemented its architecture from the ...

Human-worn exoskeletons have the ability to both augment the physical capacity of its wearer and assist in rehabilitation therapy. Design of these devices that physically interact with the human user is challenging because of user safety and comfort requirements in addition to typical robot performance measures (e.g. quick response, backdriveable etc.). Ultimately, models of the musculoskeletal...