45,085 research outputs found
A Simulation Model for Logical and Operative Clash Detection
The introduction of the Building Information Modeling (BIM) approach has
facilitated the management process of documents produced by different kinds of
professionals involved in the design and/or renovation of a building, through
identification and subsequent management of geometrical interferences (Clash
Detection). The methodology of this research proposes a tool to support Clash
Detection, introducing the logical-operative dimension, that may occur with the
presence of a construction site within a hospital structure, through the integration
of a BIM model within a Game Engine environment, to preserve the continuity of
daily hospital activities and trying to reduce negative impacts, times and costs
due to construction activities
VIoLET: A Large-scale Virtual Environment for Internet of Things
IoT deployments have been growing manifold, encompassing sensors, networks,
edge, fog and cloud resources. Despite the intense interest from researchers
and practitioners, most do not have access to large-scale IoT testbeds for
validation. Simulation environments that allow analytical modeling are a poor
substitute for evaluating software platforms or application workloads in
realistic computing environments. Here, we propose VIoLET, a virtual
environment for defining and launching large-scale IoT deployments within cloud
VMs. It offers a declarative model to specify container-based compute resources
that match the performance of the native edge, fog and cloud devices using
Docker. These can be inter-connected by complex topologies on which
private/public networks, and bandwidth and latency rules are enforced. Users
can configure synthetic sensors for data generation on these devices as well.
We validate VIoLET for deployments with > 400 devices and > 1500 device-cores,
and show that the virtual IoT environment closely matches the expected compute
and network performance at modest costs. This fills an important gap between
IoT simulators and real deployments.Comment: To appear in the Proceedings of the 24TH International European
Conference On Parallel and Distributed Computing (EURO-PAR), August 27-31,
2018, Turin, Italy, europar2018.org. Selected as a Distinguished Paper for
presentation at the Plenary Session of the conferenc
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