90 research outputs found
the rebellious journey archizoom associati and andrea branzi
Archizoom Associati design studio is one of the founding groups of the Radical Movement in Florence dating back to the 1960s. Their design activity is extremely significant in understanding the philosophy of the movement and their design works challenged functionalist design aesthetics and the mainstream ideology at the time with sarcasm, subversion, irony, and a playful design language. Andrea Branzi, which was the leader of Archizoom Associati, together with his 50-year reflection on Italian architecture and design, has witnessed this rebellious design philosophy. Based on the historical background, practical activities of Archizoom Associati and the design teachings of Andrea Branzi, this article aims to review the theoretical consciousness into architecture sphere and the empirical research into contemporary design practice
Can Virtual Reality Protect Users from Keystroke Inference Attacks?
Virtual Reality (VR) has gained popularity by providing immersive and
interactive experiences without geographical limitations. It also provides a
sense of personal privacy through physical separation. In this paper, we show
that despite assumptions of enhanced privacy, VR is unable to shield its users
from side-channel attacks that steal private information. Ironically, this
vulnerability arises from VR's greatest strength, its immersive and interactive
nature. We demonstrate this by designing and implementing a new set of
keystroke inference attacks in shared virtual environments, where an attacker
(VR user) can recover the content typed by another VR user by observing their
avatar. While the avatar displays noisy telemetry of the user's hand motion, an
intelligent attacker can use that data to recognize typed keys and reconstruct
typed content, without knowing the keyboard layout or gathering labeled data.
We evaluate the proposed attacks using IRB-approved user studies across
multiple VR scenarios. For 13 out of 15 tested users, our attacks accurately
recognize 86%-98% of typed keys, and the recovered content retains up to 98% of
the meaning of the original typed content. We also discuss potential defenses.Comment: Accepted by USENIX 202
A moving least square immersed boundary method for SPH with thin-walled structures
This paper presents a novel method for smoothed particle hydrodynamics (SPH)
with thin-walled structures. Inspired by the direct forcing immersed boundary
method, this method employs a moving least square method to guarantee the
smoothness of velocity near the structure surface. It simplifies thin-walled
structure simulations by eliminating the need for multiple layers of boundary
particles, and improves computational accuracy and stability in
three-dimensional scenarios. Supportive three-dimensional numerical results are
provided, including the impulsively started plate and the flow past a cylinder.
Results of the impulsively started test demonstrate that the proposed method
obtains smooth velocity and pressure in the, as well as a good match to the
references results of the vortex wake development. In addition, results of the
flow past cylinder test show that the proposed method avoids mutual
interference on both side of the boundary, remains stable for three-dimensional
simulations while accurately calculating the forces acting on structure.Comment: 15 pages,11 figure
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