Results 111 to 120 of about 120,188 (304)

Asymmetry in Skipping Enhances Viability Against Control Input Noise

open access: yesAdvanced Robotics Research, EarlyView.
Quadruped animals use asymmetric galloping gaits at high speeds, yet the functional role of this asymmetry remains unclear. This study shows that left–right asymmetry in touchdown angles enhances robustness to control noise. Using a simple two‐legged locomotion model and viability theory, it demonstrates that asymmetric skipping substantially enlarges ...
Yuichi Ambe, Alvin So, Shinya Aoi
wiley   +1 more source

Analysis and improvement of an ID-based authenticated key agreement protocol

open access: yesTongxin xuebao, 2008
The security of a recently proposed ID-based authenticated key agreement protocol was analyzed. Although it is provably secure in the standard model, a malicious PKG (private key generator) can still obtain all of the agreed ses-sion keys, that is, it ...
WANG Xiao-fen1   +2 more
doaj   +2 more sources

On the Political Economy of Social Security and Public Education [PDF]

open access: yes
I analyze simultaneous voting on the wage tax rate and investment in public education using a model with three overlapping generations and ability differences inside each cohort. Wage tax revenue finances public education and social security benefits.
Panu Poutvaara
core  

The changing dynamics of security in an enlarged European Union. Challenge Paper No. 12, 24 October 2008 [PDF]

open access: yes, 2008
The relation between liberty and security has been highly contestable over the past 10 years in the EU integration process. With the expansion of the EU’s powers into domains falling within the scope of the Area of Freedom, Security and Justice, liberty ...
Balzacq, Thierry.   +2 more
core  

Forward-Secure Group Encryptions from Lattices

open access: yes, 2021
Group encryption (GE) is a fundamental anonymity primitive analogue of group signature, which guarantees the decryption ability of recipients to specific ciphertexts while hiding these users within a crowd.
Willy Susilo (13350471)   +3 more
core  

Continual Learning for Multimodal Data Fusion of a Soft Gripper

open access: yesAdvanced Robotics Research, EarlyView.
Models trained on a single data modality often struggle to generalize when exposed to a different modality. This work introduces a continual learning algorithm capable of incrementally learning different data modalities by leveraging both class‐incremental and domain‐incremental learning scenarios in an artificial environment where labeled data is ...
Nilay Kushawaha, Egidio Falotico
wiley   +1 more source

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

open access: yesAdvanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun   +3 more
wiley   +1 more source

Tumbling Magnetic Microrobots for Targeted In Vivo Drug Delivery in the GI Tract

open access: yesAdvanced Robotics Research, EarlyView.
We introduce a microrobot design and integrated system for on‐demand targeted drug release in the gastrointestinal tract. The microrobot has an embedded magnet for actuation with external magnetic fields and is visualized in real time using ultrasound. It has two drug release ports sealed with a thermally sensitive wax. Local heating of the wax using a
Aaron C. Davis   +7 more
wiley   +1 more source

Retrenching the purse: The balance enquiry quandary, and generalised and (1, 1) forward refinements

open access: yes, 2007
Some of the success stories of model based refinement are recalled, as well as some of the annoyances that arise when refinement is deployed in the engineering of large systems.
Banach, Richard; id_orcid   +4 more
core  

Gait Analysis of Pak Biawak: A Necrobot Lizard Built using the Skeleton of an Asian Water Monitor (Varanus Salvator)

open access: yesAdvanced Robotics Research, EarlyView.
Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds   +2 more
wiley   +1 more source

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