Bulk viscous Zel'dovich fluid model and it's asymptotic behavior

In this paper we have considered a flat FLRW universe with bulk viscous Zel'dovich as the cosmic component. Being considered the bulk viscosity as per the Eckart formalism, we have analyzed the evolution of the Hubble parameter and constrained the model with the Type Ia Supernovae data thus extracting the constant bulk viscous parameter and present Hubble parameter. Further we have analyzed the scale factor, equation of state and deceleration parameter. The model predicts the late time acceleration and is also compatible with the age of the universe as given by the oldest globular clusters. We have also studied the phase-space behavior of the model and found that a universe dominated by bulk viscous Zel'dovich fluid is stable. But on the inclusion of radiation component in addition to the Zel'dovich fluid, makes the model unstable. Hence, even though the bulk viscous Zel'dovich fluid dominated universe is a feasible one, the model as such failed to predict a prior radiation dominated phase.Comment: 14 pages, eight figure

Applied linguistics and the pressing need of the hour

I argue in this paper that Linguistics can ill afford any more not to address the threat posed by burgeoning populist tendencies all over the world, coupled with the alarming spread of fake news and little regard for truth. We, researchers in the area of language, have a duty to intervene in the developing state of affairs with all that we can muster. If that means having to rethink our claims to be doing science and therefore be mere observers of the unfolding scenario lest we should be reneging on our oath to maintain value neutrality at any cost, then so be it.174743752CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ302981/2014-

Conservation of marine turtles and shrimp exports

Marine turtles are a group of harmless reptiles inhabiting every ocean basin, the distribution of some species ranging from Arctic Circle to Tasmania

Fisheries oceanography – processes, patterns & variability- Winter School on towards Ecosystem Based Management of Marine Fisheries – Building Mass Balance Trophic and Simulation Models

Oceanography is the scientific discipline concerned with all aspects of the world's oceans and seas, including their physical and chemical properties, their origin and geologic framework, and the life forms that inhabit the marine environment. Traditionally, oceanography has been studied under four separate but related branches: physical oceanography, chemical oceanography, marine geology, and marine ecology. Meteorology is another subject closely related to oceanography and inseparably linked to the physical processes of the ocean

Generalized Shifts on Cartesian Products

It is proved that if E, F are infinite dimensional strictly convex Banach spaces totally incomparable in a restricted sense, then the Cartesian product E×F with the sum or sup norm does not admit a forward shift. As a corollary it is deduced that there are no backward or forward shifts on the Cartesian product`p1×`p2,1\u3c p16=p2\u3c∞, with the supremum norm thus settling a problem left open in Rajagopalan and Sundaresan in J. Analysis 7 (1999(, 75-81 and also a problem stated as unsolved in Rassias and Sundaresan

Choice of Agile Methodologies in Software Development: A Vendor Perspective

The purpose of this research was to develop understanding about how vendor firms make choice about agile methodologies in software projects and their fit. Two analytical frameworks were developed from extant literature and the findings were compared with real world decisions. Framework 1 showed that the choice of XP for one project was not supported by the guidelines given by the framework. The choices of SCRUM for other two projects, were partially supported. Analysis using the framework 2 showed that except one XP project, all others had sufficient project management support, limited scope for adaptability and had prominence for rules