The widely used nonperturbative wave functions and distribution functions of QCD are determined as matrix elements of light-ray operators. These operators appear as large momentum limit of nonlocal… (More)

The conformal algebra provides powerful constraints, which guarantee that renormalized conformally covariant operators exist in the hypothetical conformal limit of the theory, where the β-function… (More)

Based on the non-local light-ray operator technique, we develop an algorithm for the computational calculation of evolution kernels for higher-twist operators in leading order of the perturbation… (More)

PURPOSE
To propose a framework for the assessment and ongoing, continuous improvement of the quality of rehabilitation care.
METHOD
The generally clarified and accepted approaches to the study of… (More)

The influence of temperature in the buoyancy driven Rayleigh-Taylor instability of reaction-diffusion fronts is investigated experimentally in Hele-Shaw cells. The acid autocatalysis of… (More)

The evolution of the pion distribution amplitude in next-to-leading order is studied for a fixed and a running coupling constant. In both cases, the evolution provides a logarithmic modification in… (More)

We apply the so-called conformal subtraction scheme to predict perturba-tively exclusive processes beyond leading order. Taking into account evolution effects, we study the scheme dependence for the… (More)

We review both the counting rule and the influence of the evolution in Q2 for the large xBj behaviour of the valance quark distribution functions. Based on a factorization procedure we present a more… (More)