Results 81 to 90 of about 2,138,593 (302)

New views of some invariants associated with the Cartesian 2D velocity gradient tensor

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Vorticity and divergence of horizontal flow are fundamental quantities in meteorology; both are linear functions of the four elements of the 2D velocity gradient tensor and both are formally unchanged under coordinate rotation. We explore four quadratic functions of the elements that are geometrically invariant in this sense, finding some novel ...
I. Roulstone, S. A. Clough, A. A. White
wiley   +1 more source

Threshold ring signature for wireless sensor networks

Tongxin xuebao, 2012
Compared with traditional network,the wireless sensor nodes are limited in the storage,mobility,computation,energy,and so on.A threshold ring signature scheme suitable for wireless sensor networks based on bilinear pairings was proposed.Assuming the ...
Jun-fang XIAO, Jian LIAO, Gui-hua ZENG
doaj   +2 more sources

Yet Another Short Signatures without Random Oracles from Bilinear Pairings

, 2005
In recent years, cryptographic protocols based on the bilinear pairings have attracted much attention. One of the most distinguished achievements in this area was the solution to design short signatures. Up to now, there exist two short signature schemes
Xiaofeng Chen, Fangguo Zhang
core  

Sensitivity study on accuracy and relevant parameters in numerical modeling of internal tendon breaks

Structural Concrete, EarlyView.
Abstract This study investigates the numerical modeling of internal tendon breaks in prestressed concrete structures and evaluates the key parameters affecting accuracy. A combined approach is followed, involving global sensitivity analysis via the Elementary Effects Method and subsequent model calibration using experimental data from distributed fiber‐
Aeneas Paul, David Sanio, Peter Mark
wiley   +1 more source

Chosen-Ciphertext Secure Unidirectional Proxy Re-Encryption Based on Asymmetric Pairings

Applied Sciences
Proxy re-encryption (PRE) is a cryptographic primitive that extends public key encryption by allowing ciphertexts to be re-encrypted from one user to another without revealing information about the underlying plaintext. This makes it an essential privacy-
Benjamin Zengin, Paulin Deupmann, Nicolas Buchmann, Marian Margraf   +3 more
doaj   +1 more source

Rotation capacity of continuous reinforced concrete slab strips revisited

Structural Concrete, EarlyView.
Abstract Rotation capacity is a key characteristic of statically indeterminate reinforced concrete structures, as it (i) enables bending moment redistributions, whether intentionally introduced through optimized reinforcement layouts or arising from unforeseen self‐equilibrated stress states, and (ii) promotes large rotations at failure load, thereby ...
Nathalie Reckinger, Karel Thoma, Walter Kaufmann   +2 more
wiley   +1 more source

Experimental and analytical investigations on the effect of steel fibers on the crack behavior and strength of dapped‐end connections

Structural Concrete, EarlyView.
Abstract Reinforced concrete (RC) dapped‐end connections feature a sharp re‐entrant corner subjected to high stress concentrations, leading to wide cracks under service loads and potential durability issues such as reinforcement corrosion. Effective crack control is therefore essential in the design of new dapped‐end connections. Steel fiber reinforced
Karin Yu, Sameera Hippola, Jaime Mata‐Falcón, Boyan Mihaylov   +3 more
wiley   +1 more source

Three‐parameter kinematic theory for shear assessment of reinforced concrete short columns

Structural Concrete, EarlyView.
Abstract This work presents a rational kinematics‐based model for assessing the shear capacity of rectangular reinforced concrete short columns. Due to their high stiffness and brittleness, short columns are particularly vulnerable to seismic forces, often exhibiting critical failures.
Daniele Arcuri, Lorenza Petrini, Boyan I. Mihaylov   +2 more
wiley   +1 more source

An Anonymous Mobile Payment System Based on Bilinear Pairings [PDF]

Informatica, 2009
Many electronic cash systems have been proposed with the proliferation of the Internet and the activation of electronic commerce. E-cash enables the exchange of digital coins with value assured by the bank's signature and with concealed user identity.
openaire   +2 more sources

Behavior of exterior beam‐column joint reinforced with shape memory alloy

Structural Concrete, EarlyView.
Abstract Beam‐column joints are critical regions in moment‐resisting frames and are particularly susceptible to severe stress concentrations and reinforcement congestion. Conventional design typically relies on dense transverse reinforcement to improve joint performance, resulting in construction difficulties and reinforcement congestion.
Yemenashu Nigusse Mogess, Tesfaye Alemu Mohammed, Temesgen Ejigu Alene, Awoke Kelemu Tamene   +3 more
wiley   +1 more source