A digital compensation technique to overcome the effects of the digital-to-analogue converter (DAC)’s mismatches in multibit deltasigma modulators is described. The technique is purely digital, does not require the injection of a pilot signal and is compatible with binary-weighted element DACs. Simulation results confirm the validity of the compensation technique for a four-bit, fifth-order low...

Bragg coherent x-ray diffractive imaging is a powerful technique for investigating dynamic nanoscale processes in nanoparticles immersed in reactive, realistic environments. Its temporal resolution is limited, however, by the oversampling requirements of 3D phase retrieval. Here we show that incorporating the entire measurement time series, which is typically a continuous physical process, into...

-The class imbalanced problem occurs in various disciplines when one of target classes has a small number of instances compare to other classes. A classifier normally ignores or neglects to detect a minority class due to the small number of class instances. It poses a challenge to any classifier as it becomes hard to learn the minority class samples. Most of the oversampling methods may generat...

Assume that samples of a filtered version of a function in a shift-invariant space are avalaible. This work deals with the existence of a sampling formula involving these samples and having reconstruction functions with compact support. Thus, low computational complexity is involved and truncation errors are avoided. This is done in the light of the generalized sampling theory by using the over...

Swarm intelligence mimics the behaviours of social insects like bees, wasps and ants to offer powerful problem solving metaheuristic which lies in a network of interactions amongst the agents of a multiagent system as well as with their environment. One of the computer algorithms inspired by swarm intelligence is the stochastic diffusion search (SDS). SDS uses some of the processes and techniqu...

In this paper, we consider the incompressible Stokes flow problem in a perforated domain and employ constraint energy minimizing generalized multiscale finite element method (CEM-GMsFEM) to solve problem. The proposed provides flexible systematical approach construct crucial divergence-free basis functions for approximating velocity field. These are constructed by solving class of local minimiz...