In this position paper we suggest a possible metric approach to shape comparison that is based on a mathematical formalization of the concept of observer, seen as a collection of suitable operators acting on a metric space of functions. These functions represent the set of data that are accessible to the observer, while the operators describe the way the observer elaborates the data and enclose...

Many key aspects of early angiosperms are poorly known, including their ecophysiology and associated habitats. Evidence for fast-growing, weedy angiosperms comes from the Early Cretaceous Potomac Group, where angiosperm fossils, some of them putative herbs, are found in riparian depositional settings. However, inferences of growth rate from sedimentology and growth habit are somewhat indirect; ...

Impact of weed-crop competition periods on the yield and parameters mungbean was investigated during spring summer season 2018 at Agronomic Research Farm, Bahauddin Zakariya University, Multan. Treatments comprised different periods, weeds were allowed to compete for 15, 30, 45 60 days with after sowing. For comparison, weed free weedy check plots also maintained. Results revealed importance co...

This study used the concepts of comparison credibility and magnitude credibility to assess perceived news media credibility in China. It also investigated which sources people trusted more when they encountered conflicting reports regarding different kinds of stories including entertainment news, disaster news and political news. A random sample from three major metropolises (n = 1,844) were te...

Incorporation of crop genes into wild and weedy relative populations (i.e. introgression) has long been of interest to ecologists and weed scientists. Potential negative outcomes that result from crop transgene introgression (e.g. extinction of native wild relative populations; invasive spread by wild or weedy hosts) have not been documented, and few examples of transgene introgression exist. H...

The developing world has many unique constraints to crop production and, lacking inputs, they are best overcome if solutions are seed borne. Classical breeding cannot overcome many of these constraints because the species have attained a 'genetic glass ceiling', the genes are not available within the species. Transgenics can supply the genes, but typically not as 'hand me down genes' from the d...

Recent interest in short range correlations of bound nucleons gave rise to our interest in the light front treatement of quasi-elastic electron deuteron scattering. The end goal of this research project is to examine the difference in cross sections between tensor polarized and unpolarized deuteron. This paper explores the simple case of scalar electron-deuteron scattering to determine whether ...