Browsing University of Hertfordshire by Title
Now showing items 18035-18054 of 24194
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Quantum Randomness in Cryptography—A Survey of Cryptosystems, RNG-Based Ciphers, and QRNGs
(2022-07-27)Cryptography is the study and practice of secure communication with digital data and focuses on confidentiality, integrity, and authentication. Random number generators (RNGs) generate random numbers to enhance security. ... -
Quantum statistics can suppress classical interference
(2002)Classical optical interference experiments correspond to a measurement of the first-order correlation function of the electromagnetic field. The converse of this statement: exper- iments that measure the first order ... -
A Quantum Stochastic Calculus
(2012-11-29)Martingales are fundamental stochastic process used to model the concept of fair game. They have a multitude of applications in the real world that include, random walks, Brownian motion, gamblers fortunes and survival ... -
Quantum stochastic processes
(American Institute of Physics (AIP), 2009)We consider quantum analogues of n-parameter stochastic processes, associated integrals and martingale properties extending classical results obtained in [1, 2, 3], and quantum results in [4, 5, 6, 7, 8, 9, 10]. -
The Quantum Wigner Current: a Geometric Approach to Quantum Dynamics in Phase Space
(2019-05-30)Phase space is the unity of position and momentum configuration space. It allows for an effective description of dynamical systems and is particularly useful when it comes to studying chaos theory and statistical ... -
Quantum, higher-spin, local charges in symmetric space sigma models
(2004-08-31)Potential anomalies are analysed for the local spin-3 and spin-4 classically conserved currents in any two-dimensional sigma model on a compact symmetric space G/H, with G and H classical groups. Quantum local conserved ... -
Quarter and Full Car Models Optimisation of Passive and Active Suspension System Using Genetic Algorithm
(2021-01-29)This study evaluates a suspension design of a passenger car to obtain maximum rider's comfort when the vehicle is subjected to different road profile or road surface condition. The challenge will be on finding a balance ... -
Quartic Hamiltonians, and higher Hamiltonians at next-to-leading order, for the affine s l 2 Gaudin model
(2023-02-21)In this work we will use a general procedure to construct higher local Hamiltonians for the affine sl2 Gaudin model. We focus on the first non-trivial example, the quartic Hamiltonians. We show by direct calculation that ... -
Quasi-free quantum stochastic integrals in the plane
(2002)Various quantum stochastic integrals in the plane are constructed where the integrators are given by quasi-free boson or fermion creation and annihilation two-parameter processes. The resulting stochastic integrals are ... -
Quasi-Free Stochastic Integrals and Martingale Representation
(World Scientific Publishing, 2008-11)We discuss the construction of quantum stochastic integrals over the positive plane. Non-commutative representations for the quasi-free CAR and CCR settings are presented extending results obtained previously for martingales ... -
Quasi-markets and school performance : evidence from a study of English secondary schools
(Peter Lang Pub. Inc., 2000)The concurrence of stagnating budgets for education has tended to increase demands on education systems. This has resulted in the tightening of the financial bottleneck situation, and this begs the question of, what is the ... -
Quasi-orthogonal space-frequency coding in non-coherent cooperative broadband networks
(2014-04-01)So far, complex valued orthogonal codes have been used differentially in cooperative broadband networks. These codes however achieve less than unitary code rate when utilized in cooperative networks with more than two ... -
Quasi-spherical ice in convective clouds
(2016-09-21)Homogeneous freezing of supercooled droplets occurs in convective systems in low and midlatitudes. This droplet-freezing process leads to the formation of a large amount of small ice particles, so-called frozen droplets, ... -
Quasitriangular coideal subalgebras of Uq(g) in terms of generalized Satake diagrams
(2020-08-01)Let (Formula presented.) be a finite-dimensional semisimple complex Lie algebra and (Formula presented.) an involutive automorphism of (Formula presented.). According to Letzter, Kolb and Balagović the fixed-point subalgebra ... -
Quatremere de Quincy and the instrumentality of the museum
(2004)In this paper I want to explore some of the ways in which art lost the capacity to embody knowledge in late eighteenth century France with particular reference to the writings of the art critic, archaeologist and academician, ... -
Que Peut Apporter la Gestion Agile de Project?”
(2012-09) -
Queer Densities in Garth Greenwell's What Belongs to You: Narrative, Memory, Corporeality
(2020-01-31)Much contemporary queer US literature aims at physical and metaphorical density to write against the systematic subjugation and marginalisation of queer lives, the lingering inequalities of LGBTQIA+ people, and the ...