90 research outputs found
A Taxonomy for Classifying Runtime Verification Tools
International audienceOver the last 15 years Runtime Verification (RV) has grown into a diverse and active field, which has stimulated the development of numerous theoretical frameworks and tools. Many of the tools are at first sight very different and challenging to compare. Yet, there are similarities. In this work, we classify RV tools within a high-level taxonomy of concepts. We first present this taxonomy and discuss the different dimensions. Then, we survey RV tools and classify them according to the taxonomy. This paper constitutes a snapshot of the current state of the art and enables a comparison of existing tools
Analytic Analysis for Oil Recovery During Cocurrent Imbibition in Inclined Homogeneous Porous Medium
This paper focuses on the analysis of cocurrent imbibition phenomenon which occurs during secondary oil recovery process.In cocurrent imbibition, a strongly wetting phase(water) displaces a non-wetting phase(oil) spontaneously under the influence of capillary forces such that the oil moves in the same direction to the water. We use an optimal homotopy analysis method to derive an approximate analytical expression for saturation of water when the viscosity of the non-wetting phase is non-negligible
Independent Configurable Architecture for Reliable Operation of Unmanned Systems with Distributed Onboard Services
This paper presents the development of ICAROUS-2 (Independent Configurable Architecture for Reliable Operation of Unmanned Systems with Distributed Onboard Services), the second generation of a software architecture that integrates several algorithms as distributed onboard services to enable robust autonomous UAS applications. In particular, the ICAROUS architecture defines a framework to perform detect and avoid, geofencing, path monitoring, path planning, and autonomous decision making to ensure safety and mission progress. Most of the core algorithms implemented in ICAROUS are formally verified using an interactive theorem prover. These algorithms are composed together using a plan execution engine, whose operational semantics is formally specified. A description of the integrated architecture, services currently available, and flight test results highlighting the capability of ICAROUS are presented
Smart bracelet for anxiety
This paper introduces a novel non-invasive wearable device that can infer whether
people are suffering from anxiety or not. The device allows capturing physiological signals
such as: electrodermal activity (EDA), skin temperature (ST), electrocardiography (ECG)
and photoplethysmography (PPG), and provides an estimation of blood pressure -through
the pulse transit time (PTT) technique- and breathing rate (BR) -by analyzing the heart
rate variability-. The hardware also includes an SD card to store the signals for offline
processing in laboratory tests
The impact and consequences of deepfakes in cyberspace on the social environment
We live in an era daily inundated with information, and the economy of attention makes us far from the truth. The present study has its core to study the creation, use and sharing of videos originated by artificial intelligence that can make it appear that a person says or does something, although he has never said or done anything of the kind. This content is called deepfake. The problem is the way this content is propagated, which for the untrained eye it can be seen as authentic. Quantitative research was carried out, through an inquiry and a literature review.info:eu-repo/semantics/publishedVersio
EEG analysis of the construction of empathy towards people with Schizophrenia, after exposure to virtual reality environments
Schizophrenia is considered a complex syndrome, with multifactorial neurodevelopmental alterations. Empathy is a complex fundamental component of human emotional experience, which influences one's emotions and behavior. On the Electroencephalogram, an activation of the dorsolateral prefrontal cortex is characterized by a decrease in alpha activity. The main objective of this work is to understand if the immersive tools of Virtual Reality influence the electrical activity of the brain and the heart. The two immersive tools were able to increase empathy, mainly by altering prefrontal brain activity as well as heart rate.info:eu-repo/semantics/publishedVersio
The use of virtual reality in public speaking training programs
In several studies, the fear of public speaking acts like pathology. However, giving a lecture or presenting a project are daily tasks that stir the nerves, even the non-phobic person. The article intends to show the pedagogical vision about the influence of virtual environments’ aid in public speaking practice. Two studies were conducted. A scoping review debated the use of the virtual reality programs for public speaking skills training and has proved, in this context, is still a recent procedure, and so lacks solid evidence. Second, exploratory research detected and compared nine virtual reality applications for public speaking practice.info:eu-repo/semantics/publishedVersio
Mixed reality in surgery – a delphi study
Virtual Reality, Augmented Reality and Mixed Reality all have useful applications in the field of medicine, but Mixed reality has great potential because it allows for interaction with both real and digital Objects. Based on a previous literature review, a preliminary Delphi study was performed to obtain the opinion of a panel of 22 experts from several hospitals on the use of Mixed Reality tools, such as the HoLoLens 2, in surgeries. After data collection, a consensus letter was signed. According to experts, the most useful areas are medical education and surgical planning.info:eu-repo/semantics/publishedVersio
AsmetaF: A Flattener for the ASMETA Framework
Abstract State Machines (ASMs) have shown to be a suitable high-level
specification method for complex, even industrial, systems; the ASMETA
framework, supporting several validation and verification activities on ASM
models, is an example of a formal integrated development environment. Although
ASMs allow modeling complex systems in a rather concise way -and this is
advantageous for specification purposes-, such concise notation is in general a
problem for verification activities as model checking and theorem proving that
rely on tools accepting simpler notations.
In this paper, we propose a flattener tool integrated in the ASMETA framework
that transforms a general ASM model in a flattened model constituted only of
update, parallel, and conditional rules; such model is easier to map to
notations of verification tools. Experiments show the effect of applying the
tool to some representative case studies of the ASMETA repository.Comment: In Proceedings F-IDE 2018, arXiv:1811.09014. The first two authors
are supported by ERATO HASUO Metamathematics for Systems Design Project (No.
JPMJER1603), JST. Funding Reference number: 10.13039/501100009024 ERAT
- …