Design and Implementation of an RNS-based 2D DWT Processor

No abstract availabl

Dispersal and noise: Various modes of synchrony in\ud ecological oscillators

We use the theory of noise-induced phase synchronization to analyze the effects of dispersal on the synchronization of a pair of predator-prey systems within a fluctuating environment (Moran effect). Assuming that each isolated local population acts as a limit cycle oscillator in the deterministic limit, we use phase reduction and averaging methods to derive a Fokker–Planck equation describing the evolution of the probability density for pairwise phase differences between the oscillators. In the case of common environmental noise, the oscillators ultimately synchronize. However the approach to synchrony depends on whether or not dispersal in the absence of noise supports any stable asynchronous states. We also show how the combination of correlated (shared) and uncorrelated (unshared) noise with dispersal can lead to a multistable\ud steady-state probability density

Effects of demographic noise on the synchronization of a metapopulation in a fluctuating environment

We use the theory of noise-induced phase synchronization to analyze the effects of demographic noise on the synchronization of a metapopulation of predator-prey systems within a fluctuating environment (Moran effect). Treating each local predator–prey population as a stochastic urn model, we derive a Langevin equation for the stochastic dynamics of the metapopulation. Assuming each local population acts as a limit cycle oscillator in the deterministic limit, we use phase reduction and averaging methods to derive the steady state probability density for pairwise phase differences between oscillators, which is then used to determine the degree of synchronization of\ud the metapopulation

Embracing Imperfection: Contemporary Fashion Communication and Consumer Well-Being

Purpose Fashion advertising as a contemporary ideological form has the power to deliver semiotic messages, which frames individuals' perception. Promoting perfection in consumer culture has resulted in the creation of unrealistic self-image and negative effects that led to psychological illnesses and pathological behaviours. The purpose of this paper is to investigate the ideology behind the contemporary fashion advertising that embraces imperfection and is linked to consumer subjective well-being. Design/methodology/approach Nine fashion ads were selected based on the WGSN consumer report Embracing Imperfection. A sample of images was analysed applying semiotic analysis combined with the criteria of content analysis. Findings The results supported the notion that some contemporary fashion communication brands are challenging the conventional idea of perfection. Five themes were identified as the characteristics that bridged the visual surface of advertising with its hidden ideologies of imperfection. By supporting “anonymity”, fashion brand communication is against excessive self-focus and helps reducing anxiety due to being imperfect. By promoting “rawness”, it encourages authenticity and uniqueness. “Banality” rejects materialism and promotes the beauty of the boring day. “Ugliness” advocates for removal of the single standards and celebrate individual differences, and “spontaneity” is interchangeable for humanity, freedom, openness and acceptance of self. Originality/value This study is among the few attempts to conduct semiotic analysis of fashion advertising images aiming to identify the visual components and ideologies that could potentially be linked to subjective well-being in fashion communication

Cusp-scaling behavior in fractal dimension of chaotic scattering

A topological bifurcation in chaotic scattering is characterized by a sudden change in the topology of the infinite set of unstable periodic orbits embedded in the underlying chaotic invariant set. We uncover a scaling law for the fractal dimension of the chaotic set for such a bifurcation. Our analysis and numerical computations in both two- and three-degrees-of-freedom systems suggest a striking feature associated with these subtle bifurcations: the dimension typically exhibits a sharp, cusplike local minimum at the bifurcation.Comment: 4 pages, 4 figures, Revte

Dissipative chaotic scattering

We show that weak dissipation, typical in realistic situations, can have a metamorphic consequence on nonhyperbolic chaotic scattering in the sense that the physically important particle-decay law is altered, no matter how small the amount of dissipation. As a result, the previous conclusion about the unity of the fractal dimension of the set of singularities in scattering functions, a major claim about nonhyperbolic chaotic scattering, may not be observable.Comment: 4 pages, 2 figures, revte