Clustered count data are commonly modeled using Poisson regression with random effects to account for the correlation induced by clustering. The mixed model allows overdispersion via nature of within-cluster correlation, however, departures from equi-dispersion may also exist due underlying process mechanism. We study cross-sectional COM-Poisson model—a generalized in light dispersion—together ...

Field-amplified sample stacking (FASS) uses conductivity gradients and resulting non-uniform electromigration fluxes to effect concentration increases of analyte ions. For cases where the initial sample concentration is much smaller than the background electrolyte (BGE) concentration, the ideal maximum concentration enhancement is equal to γ , the ratio of conductivity of the sample solution to...

air pollution is one of the major threats to environment in the present time. increase in degree of urbanization is a major cause of this air pollution. due to urbanization, vehicular activities are continuously increasing at a tremendous rate. mobile or vehicular pollution is predominantly degrading the air quality worldwide. thus, air quality management is necessary for dealing with this seve...

The equal width wave (EW) equation is a model partial differential equation for the simulation of one-dimensional wave propagation in nonlinear media with dispersion processes. The EW-Burgers equation models the propagation of nonlinear and dispersive waves with certain dissipative effects. In this work, we derive exact solitary wave solutions for the general form of the EW equation and the gen...

We give a partonic interpretation for the deeply virtual Compton scattering (DVCS) measurements of the H1 and ZEUS collaborations in the small-xB region in terms of generalized parton distributions. Thereby we have a closer look at the skewness effect, parameterization of the t-dependence, revealing the chromomagnetic pomeron, and at a model dependent access to the anomalous gravitomagnetic mom...

Over the past years, the virtual Compton scattering (VCS) process on the proton, accessed through the ep → epγ reaction, has become a powerful tool to provide new information on the internal structure of the nucleon . In the low energy regime below pion threshold, the outgoing photon in the VCS process plays the role of a quasi-constant applied electromagnetic dipole field and, through electron...

The Generalized Maximum Dispersion problem asks for a partition of a given graph into p vertex-disjoint sets, each of them having at most k vertices. The goal is to maximize the total edge-weight of the induced subgraphs. We present the first LP-based approximation algorithm.

We consider Taylor dispersion for tracer particles in micro-fluidic planar channels with strong confinement. In this context, the channel walls modify local diffusivity tensor and also interactions between become important. provide a simple general formula effective diffusion constant along as well first non-trivial finite time correction arbitrary flows channel, interaction potentials expressi...