Results 91 to 100 of about 167,450,031 (235)

Ouroboros Crypsinous: Privacy-Preserving Proof-of-Stake [PDF]

, 2019
We present Ouroboros Crypsinous, the first formally analyzed privacy-preserving proof-of-stake blockchain protocol. To model its security we give a thorough treatment of private ledgers in the (G)UC setting that might be of independent interest. To prove
Markulf Kohlweiss, Vassilis Zikas, Zikas, Vassilis, Thomas Kerber, Aggelos Kiayias, Kerber, Thomas, Kohlweiss, Markulf; id_orcid, Kiayias, Aggelos; id_orcid   +7 more
core   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

SUSTAINABLE BLOCKCHAIN: SOLUTIONS AND CHALLENGES IN REDUCING THE ECOLOGICAL IMPACT OF CRYPTOCURRENCIES [PDF]

Analele Universităţii Constantin Brâncuşi din Târgu Jiu : Seria Economie
Blockchain technology has rapidly transformed the way decentralized systems operate, offering new possibilities for transparency, security, and autonomy.
PURCAREA LIVIU , RADULESCU CARMEN VALENTINA , MANESCU ANDREEA MARIA   +2 more
doaj  

51% attack vulnerability of nascent blockchains: a comprehensive review

Complex & Intelligent Systems
Nascent blockchains—networks in their formative stages (0–3 years post-launch) with limited network participation and market capitalisation below $100 million—face disproportionate vulnerability to consensus-level attacks.
Buti Sello, Jianming Yong, Xiaohui Tao
doaj   +1 more source

Hydro‐ and Lipophilicity of Molecular‐Size‐Controlled Hydrogel Drug Carriers

Advanced Materials Technologies, EarlyView.
We investigate nano‐sized hydrogel drug carriers with tailored hydro‐ and lipophilicity. We design their encapsulation and structure‐forming capabilities and follow them in real time during fabrication using time‐resolved and in situ grazing incidence x‐ray scattering.
Elisabeth Erbes, Naireeta Biswas, Calvin J. Gavillet, Matthias Schwartzkopf, Krishnayan Basuroy, Qing Chen, Andrei Chumakov, Susann Frenzke, Marc Gensch, Korneliya Gordeyeva, Patrycja Kielb, Sonja Kirchner, Volker Körstgens, Peter Müller‐Buschbaum, Henrike M. Müller‐Werkmeister, Jan Rubeck, Sreevidya Thekku Veedu, Jose de Jesus Velazquez‐Garcia, Vivian Waclawek, Daniel Söderberg, Stephan V. Roth, Simone Techert   +21 more
wiley   +1 more source

From Rigid to Soft Robotic Approaches for Neuroendoscopy

Advanced Robotics Research, EarlyView.
Robotic assistance has had minimal impact on deep intraventricular surgeries, where small‐scale, precision, and reduced invasiveness can contribute to improved patient outcomes. Emerging technologies in rigid, soft, and hybrid robotics are reviewed to identify the most promising mechanisms for deep brain navigation in addition to an attempt to identify
Kieran Gilday, Irena Zubak, Andreas Raabe, Josie Hughes   +3 more
wiley   +1 more source

Proof of stake vs. delegated proof of stake: full guide

Proof-of-Stake (PoS) consensus algorithms make blockchain networks more efficient by eliminating the energy-intensive computational mining process inherent in Proof-of-Work protocols.
Cryptopedia Staff
core   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

Piezoresistivity Enhancement by Graphite Flake Alignment in Thin Composite Films for Dielectric Elastomer Switches

Advanced Robotics Research, EarlyView.
This article presents dielectric elastomer switch (DES) materials, based on composite thin films. Alignment of graphite flakes due to their physical confinement within the thin films lead to much stronger piezoresistive responses than bulk composites, while their durability exceeds that of conventional liquid‐based DES materials.
Lingyu Liu, Thomas Kister, Bart‐Jan Niebuur, Tobias Kraus   +3 more
wiley   +1 more source

Ouroboros: A Provably Secure Proof-of-Stake Blockchain Protocol [PDF]

, 2019
We present ``Ouroboros,\u27\u27 the first blockchain protocol based on proof of stake with rigorous security guarantees. We establish security properties for the protocol comparable to those achieved by the bitcoin blockchain protocol.
Bernardo David, Alexander Russell, Aggelos Kiayias, Roman Oliynykov   +3 more
core   +1 more source