42 research outputs found
A model of ideological struggle
A general model for opinion formation and competition, like in ideological
struggles is formulated. The underlying set is a closed one, like a country but
in which the population size is variable in time. Several ideologies compete to
increase their number of adepts. Such followers can be either converted from
one ideology to another or become followers of an ideology though being
previously ideologically-free. A reverse process is also allowed. We consider
two kinds of conversion: unitary conversion, e.g. by means of mass
communication tools, or binary conversion, e.g. by means of interactions
between people. It is found that the steady state,when it exists, depends on
the number of ideologies. Moreover when the number of ideologies increases some
tension arises between them. This tension can change in the course of time. We
propose to measure the ideology tensions through an appropriately defined scale
index.Comment: 10 pages, 3 figures, 46 references, working pape
On Isotropic Turbulence in the Dark Fluid Universe
As first part of this work, experimental information about the decay of
isotropic turbulence in ordinary hydrodynamics, u^2(t) proportional to
t^{-6/5}, is used as input in FRW equations in order to investigate how an
initial fraction f of turbulent kinetic energy in the cosmic fluid influences
the cosmological development in the late, quintessence/phantom, universe. First
order perturbative theory to the first order in f is employed. It turns out
that both in the Hubble factor, and in the energy density, the influence from
the turbulence fades away at late times. The divergences in these quantities
near the Big Rip behave essentially as in a non-turbulent fluid. However, for
the scale factor, the turbulence modification turns out to diverge
logarithmically. As second part of our work, we consider the full FRW equation
in which the turbulent part of the dark energy is accounted for by a separate
term. It is demonstrated that turbulence occurrence may change the future
universe evolution due to dissipation of dark energy. For instance,
phantom-dominated universe becomes asymptotically a de Sitter one in the
future, thus avoiding the Big Rip singularity.Comment: 10 pages, no figures, significant revision. Matches published versio
On traveling waves in lattices: The case of Riccati lattices
The method of simplest equation is applied for analysis of a class of
lattices described by differential-difference equations that admit
traveling-wave solutions constructed on the basis of the solution of the
Riccati equation. We denote such lattices as Riccati lattices. We search for
Riccati lattices within two classes of lattices: generalized Lotka - Volterra
lattices and generalized Holling lattices. We show that from the class of
generalized Lotka - Volterra lattices only the Wadati lattice belongs to the
class of Riccati lattices. Opposite to this many lattices from the Holling
class are Riccati lattices. We construct exact traveling wave solutions on the
basis of the solution of Riccati equation for three members of the class of
generalized Holing lattices.Comment: 17 pages, no figure
Type 2 diabetes therapeutic strategies: why don't we see the «ELEPHANT» in the room?
During the past two decades, the unequivocally recommended treatment method of Type 2 diabetes mellitus was insulin administration and intensification in the earliest possible stage of the diagnosis. This approach is not only unfounded but was never scientifically proven. Yet, it has been zealously advocated to medical professionals. In fact, a sound body of evidence disproves this long-standing treatment approach. This method is a cornerstone of, what we now know to be two great illusions of past century, namely, glucocentrism and intensification. Numerous recently published studies provide alarming data regarding serious side effects of blind intensification and insulin overdosing in T2DM. They raise major concerns and call for revision of the traditional approach. Since insulin is an integral and deeply rooted part of the intensification agenda of treating T2DM, it has now suffered a serious drawback. Alternatively, in this review authors present the novel Gravicentric (Energy) concept of T2DM acceptance and therapy. They offer a new classification of anti-diabetes drugs based on their energy effect and present their Gravicentric Algorithm for wide practical utilization. For that reason, the "ELEPHANT" abbreviation was found as a helpful reminder. Viewing T2DM as disease of energy balance together with anti – energy drugs implementation provide medical doctors an unique opportunity to transform T2DM from "slowly – progressive" disease to rapidly reversible condition, which it actually is