Parameterized Verification under Release Acquire is PSPACE-complete

We study the safety verification problem for parameterized systems under the release-acquire (RA) semantics. In the non-parameterized setting, access to atomic compare-and-swap (CAS) instructions renders the safety verification problem undecidable. In the light of this result, we consider parameterized systems consisting of an unbounded...

The effect of pulsations in conditions related to catalytic converters

The effect of pulsations in a catalyst converter is investigated with the aim of determining if a steady flow captures the same physical phenomena as the pulsating flow. For this specific case, guide vanes are mounted in the sudden expansion to obtain a uniform inlet flow to the catalytic layers. The test rig is successfully validated against...

Initial Model of Social Acceptability for Human Augmentation Technologies

Academia and industry engage in major efforts to develop technologies for augmenting human senses and activities. Many of these technologies, such as augmented reality (AR) and virtual reality (VR) head mounted displays (HMD), haptic augmentation systems, and exoskeletons can be applied in numerous usage contexts and scenarios. We argue that...

Particle collision statistics in turbulent flows with kinematic simulation

Colliding droplets or particles in turbulent flows are important in applications ranging from rain formation in clouds to aerosol production in process engineering. To reduce the computational costs when simulating such flows, kinematic simulation (KS) is frequently applied as a cheap surrogate for direct numerical simulation (DNS) of the...

A numerical wave resistance prediction method for high-speed round bilge hull forms

Encapsulated models for reasoning and decision support (abstract)

We show and discuss the benefits of incorporating a domain model as part of a classifier: it guards against over-fitting, helps ensure the classifier is appropriate for the problem at hand and adds to classification explainability.

A formal model of procrastination

Procrastination is widespread self-undermining behaviour that negatively impacts individual performance and well-being. Psychological research has identified a variety of factors that influence this complex behaviour. However, how these factors interact and influence procrastination is poorly understood; there is no uniform theory that...

Inference and attack in Bayesian networks

In legal reasoning the Bayesian network approach has gained increasingly more attention over the last years due to the increase in scientific forensic evidence. It can however be questioned how meaningful a Bayesian network is in terms that are easily comprehensible by judges and lawyers. Argumentation models, which represent arguments and...

PIV in a model wind turbine rotor wake

Stereoscopic particle image velocimetry (PIV) measurements of the flow in the wake of scale model of a horizontal axis wind turbine is presented Near the rotor, measurements are made in vertical planes intersecting the rotor axis These planes capture flow effect from the tip and root vortices The stability of the tip vortices as a function of...

Phase-locked stereoscopic PIV measurements of the turbulent swirling flow in a dynamic model of a uniflow-scavenged two-stroke engine cylinder

It is desirable to use computational fluid dynamics for the optimization of in-cylinder processes in large two-stroke low-speed uniflowscavenged marine diesel engines. However, the complex nature of the turbulent swirling in-cylinder flow necessitates experimental data for validation of the used turbulence models. In the present work, the flow...

GOCE SSTI L2 tracking losses and their impact on POD performance

The state-of-the-art GOCE Satellite-to-Satellite Tracking Instrument (SSTI) delivers high-quality GPS data with an almost continuous 1 Hz data rate, which allows for very Precise Orbit Determination (POD). Despite this good performance, the GPS receiver shows occasional unexpected L2 tracking losses, which mainly occur close to the geomagnetic...

Determining the Environment: A Modal Logic for Closed Interaction (extended abstract)

In the last decades logics for describing coalitional power in Multi Agent Systems have flourished. Alur’s Alternating-Time Temporal Logic (ATL) [1], Pauly’s Coalition Logic (CL) [5], Belnap’s STIT Logic [2], are only a few influential examples of them. Roughly speaking they are all multimodal logics equipped with an operator [C] to express the...

High-frequency multibeam echosounder classification for rapid environmental assessment

Distributed source coding of video with non-stationary side-information

In distributed video coding, the complexity of the video encoder is reduced at the cost of a more complex video decoder. Using the principles of Slepian andWolf, video compression is then carried out using channel coding principles, under the assumption that the video decoder can temporally predict side-information that is correlated with the...

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