Programming language, database and operating system objects are essentially implementation variants of the same basic programming paradigm, i.e. objects as found in object-oriented programming languages. Yet, these object models di er signi cantly with regard to programming support, granularity, lifetime, persistence, concurrency, fault-tolerance and others. The paper points out the di erences ...

We optimize the noise shaping behavior of color error diffusion by designing an optimized error lter based on a proposed noise shaping model for color error di usion and a generalized linear spatially-invariant model of the human visual system. Our approach allows the error lter to have matrix-valued coe cients and di use quantization error across channels in an opponent color representation. T...

In this work, we apply quantum cellular automata (QCA) to study pattern formation and image processing in quantum-di usion Schrodinger systems (QDSS) with generalized complex di usion coe cients. Generalized complex numbers have the real part and imaginary part with the imaginary unit i = −1 (classical case), i = +1 (double numbers) and i = 0 (dual numbers). They form three 2-D complex algebras...

This is the rst systematic experimental study of the comparative performance of two incentive compatible mechanisms for public goods provision: the Basic Quadratic mechanism by Groves and Ledyard and the Paired-Di erence mechanism by Walker. Our experiments demonstrate that the performance of the Basic Quadratic mechanism under a high punishment parameter is far better than the same mechanism u...

The transformation which assigns to a linear operator L the recurrence satis ed by coe cient se quences of the polynomial series in its kernel is shown to be an isomorphism of the corresponding operator algebras We use this fact to help factoring q di erence and recurrence operators and to nd nice power series solutions of linear di erential equations In particular we characterize generalized h...

Fitch graphs G = (X,E) are di-graphs that are explained by {⊗, 1}-edge-labeled rooted trees with leaf set X: there is an arc xy ∈ E if and only if the unique path in T that connects the least common ancestor lca(x, y) of x and y with y contains at least one edge with label 1. In practice, Fitch graphs represent xenology relations, i.e., pairs of genes x and y for which a horizontal gene transfe...

Stability parameters for stabilized methods in uids are suggested. The computation of the largest eigenvalue of a generalized eigenvalue problem replaces controversial de nitions of element diameters and inverse estimate constants, used heretofore to compute these stability parameters. The design is employed in the advective-di usive model, incompressible Navier-Stokes equations and the Stokes ...

Some image quality parameters, such as the Strehl ratio and the optical transfer function, are analysed in the generalized phase-space, or x-p domain, of the fractional Fourier transform associated with a modi®ed onedimensional pupil function. Some experimental results together with computer simulations are performed which illustrate the tolerance to defocus of di€ erent apertures.

Objective(s): Endometritis is the inflammation of the uterine lining that is associated with infertility. It affects milk production and reproductive performance and leads to huge economic losses in dairy cows. Dimethyl itaconate (DI), a promising chemical agent, has recently been proved to have multiple health-promoting effects. However, the effects of DI on endometri...