Searched for: collection%3Air
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Anderson, Ross (author), Barton, Chris (author), Böhme, Rainer (author), Clayton, Richard (author), Hernandez Ganan, C. (author), Grasso, Tom (author), Levi, Michael (author), Moore, Tyler (author), Vasek, Marie (author)
In 2012 we presented the first systematic study of the costs of cybercrime. In this paper, we report what has changed in the seven years since. The period has seen major platform evolution, with the mobile phone replacing the PC and laptop as the consumer terminal of choice, with Android replacing Windows, and with many services moving to the...
conference paper 2019
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Meesters, K.J.M.G. (author), Nespeca, V. (author), Comes, M. (author)
Information and supporting information systems is a key element in an effective emergency response. From creating situational awareness to informed decision making, information enables responders to optimize their decisions and operations. Today, with the increased availability of information technology around the globe, a new active player in...
conference paper 2019
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Abdelgawad, Ahmed (author), Comes, M. (author)
Evaluation and testing are major steps in the development of any information system, particularly if it is to be used in high-risk contexts such as conflicts. While thus far there are various approaches for testing against technology requirements; usability or usefulness, there is a lack of a comprehensive evaluation framework that combines the...
conference paper 2019
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van den Bercken, Laurens (author), Sips, R.H.J. (author), Lofi, C. (author)
Health literacy, i.e. the ability to read and understand medical text, is a relevant component of public health. Unfortunately, many medical texts are hard to grasp by the general population as they are targeted at highly-skilled professionals and use complex language and domain-specific terms. Here, automatic text simplification making text...
conference paper 2019
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Sharifi Noorian, S. (author), Psyllidis, A. (author), Bozzon, A. (author)
Street-level imagery contains a variety of visual information about the facades of Points of Interest (POIs). In addition to general mor- phological features, signs on the facades of, primarily, business-related POIs could be a valuable source of information about the type and iden- tity of a POI. Recent advancements in computer vision could...
conference paper 2019
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Azizah, Erwina Nurul (author), Pujianto, Utomo (author), Nugraha, Eki (author), Darusalam, D. (author)
People now trying to maximizing function of Virtual Learning Environment. Virtual Learning Environment, not only as a place to help learning system but now has become a place of learning itself. But with the change of the learning system, teacher now have difficulty to monitor the activity of the student and the learning material. Although...
conference paper 2019
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Tambe, S.S. (author), Schrijer, F.F.J. (author), Gangoli Rao, A. (author), Veldhuis, L.L.M. (author)
Boundary layer instabilities and the formation of coherent spiral vortices over a rotating cone and ellipsoid are studied experimentally. It is found that under a non-axial inflow, the breaking of symmetry in the flow field significantly disturbs the coherence and delays the formation of spiral vortices to higher local Reynolds numbers (Re_l)...
conference paper 2019
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Laguarda Sanchez, L. (author), Schrijer, F.F.J. (author), van Oudheusden, B.W. (author), Hickel, S. (author)
An experimental investigation of shock-shock interactions has been conducted with the aim of studying the transition between Regular (RI) and Mach (MI) interactions induced by a variation of the inflow Mach number. The experiments were conducted in the TST-27 wind tunnel at Delft University of Technology. For all cases, the wind tunnel runs were...
conference paper 2019
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Laguarda Sanchez, L. (author), Hickel, S. (author), Schrijer, F.F.J. (author), van Oudheusden, B.W. (author)
The dynamic interaction of two planar and asymmetric shock waves at a free-stream Mach number M¥ = 3 is studied numerically in order to characterize the transition between the regular (RI) and Mach (MI) interaction patterns. Shock deflection disturbances are independently introduced in the form of a sinusoidal oscillation of the shock generator....
conference paper 2019
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Hu, W. (author), Hickel, S. (author), van Oudheusden, B.W. (author)
The unsteadiness of shock wave-boundary layer interactions is investigated in a transitional backward-facing step flow at Ma=1:7 and Red0 =13718 using large eddy simulation. The mean and instantaneous flow shows that the laminar inflow undergoes a laminar-to-turbulence transition in which Kelvin-Helmholtz vortices form, distort and eventually...
conference paper 2019
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van Duijvenbode, J.R. (author), Buxton, M.W.N. (author)
Metallurgical attributes are often omitted from the mine to metal valuation models since they are either absent or unreliable. However, recent developments in sensor technology indicate the potential to collect information on metallurgical properties directly or by measurement of proxies. Integrating this information back into the resource model...
conference paper 2019
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Chockalingam, S. (author), Pieters, W. (author), Teixeira, Andre M. H. (author), Khakzad Rostami, N. (author), van Gelder, P.H.A.J.M. (author)
Because of modern societies' dependence on industrial control systems, adequate response to system failures is essential. In order to take appropriate measures, it is crucial for operators to be able to distinguish between intentional attacks and accidental technical failures. However, adequate decision support for this matter is lacking. In...
conference paper 2019
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Alons-Hoen, Kristel (author), Somers, Guy (author), van Duin, Ron (author)
In order to meet emission targets for 2050 in Europe transport needs to be executed more 2 efficiently. A promising way to make transport more efficient is synchromodal transport. When the 3 service provider has more flexibility to arrange transport, the utilization and use of intermodal transport, 4 such as rail, can be increased and emissions...
conference paper 2019
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Kiel, J (author), Taale, Henk (author)
In Europe, different road authorities have to face the ever increasing pressure to integrate their road network service provision with - often conflicting - different trends and conditions such as congestion, climate change, individualism, urbanization, safety, environmental issues and economic growth. There is also a need to cooperate with...
conference paper 2019
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Snelder, M. (author), Wilmink, Isabel (author), van der Gun, J.P.T. (author), Bergveld, HJ (author), Hoseini, Parvin (author), van Arem, B. (author)
This paper presents a model specifically developed to explore the mobility impacts of connected and automated driving and shared mobility. It is an explorative iterative model that uses an elasticity model for destination choice, a multinomial logit model for mode choice and a network fundamental diagram to assess traffic impacts. To the best of...
conference paper 2019
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van den Aarssen, M.S.T. (author), Visser, T. (author), de Visser, C.C. (author)
High performance control allocation methods for the Innovative Control Effectors (ICE) aircraft require accurate onboard aerodynamic models, with preferably first order continuity. Simplotope B-Splines, an extension on Simplex B-Splines, have a high approximation power by using local cost functions. However, enforcing global continuity produces...
conference paper 2019
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Zamboni, J. (author), Vos, Roelof (author), Emeneth, Mathias (author), Schneegans, Alexande (author)
The growing interest into hybrid electric propulsion as a possible solution to reduce in-flight emissions has led to the investigations of many innovative propulsive system architectures that couple higher system efficiency with improved aerodynamic propulsion integration strategies. The paper presents amethodology to model and size generic...
conference paper 2019
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Canale, Anto (author), Mooij, E. (author)
This paper proposes a real-time implementable Lyapunov-based guidance algorithm for small-body proximity operations. The guidance solution accounts for the secular e_ects coming from the oblateness of the main body and for the non-impact condition between the latter one and the spacecraft. The _rst perturbation with respect to the two-body...
conference paper 2019
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Raimondo, A. (author), Bisagni, C. (author)
An approach based on the cohesive zone model for analyzing fatigue-driven delamination in composite structures under cyclic loading is presented. The proposed technique, called “Min-Max Load Approach”, is able to dynamically capture the local stress ratio during the evolution of damage. The possibility to know the local stress ratio is relevant...
conference paper 2019
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van Dercreek, C.P. (author), Manjunath, P. (author), Ragni, D. (author), Snellen, M. (author)
This study investigated how embedding microphones in different cavity geometries reduce the measured turbulent boundary layer pressure fluctuations at the microphones. The cavity geometries were systematically varied using a design of experiments (DOE) methodology. This approach tested different cavity depths, diameters, chamfers, and opening...
conference paper 2019
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