## Search

Now showing items 11-20 of 32

#### Modeling of Wind Effects on Stratified Flows in Open Channels: A Model for the Istanbul Strait (Bosphorus)

(2016)

Stratified flows in open channels arise as a result of density or surface level differences. If the channel is connected to a basin at one or both ends, strong winds originating from the basin cause the "wind setup" effect ...

#### On the uniqueness of the octonionic instanton solution on conformally flat 8-manifolds

(IOP Publishing Ltd, 2016)

Let M be an 8-manifold and E be an SO(8) bundle on M. In a previous paper [F. Ozdemir and A.H. Bilge, "Self-duality in dimensions 2n > 4: equivalence of various definitions and the derivation of the octonionic instanton ...

#### The Fourier Transform of the First Derivative of the Generalized Logistic Growth Curve

(International journal of advances in engineering and pure sciences (Online), 2020)

The “generalized logistic growth curve” or the “5-point sigmoid” is a typical example for sigmoidal curves without symmetry and it is commonly used for non-linear regression. The “critical point” of a sigmoidal curve is ...

#### 'Level grading' a new graded algebra structure on differential polynomials: application to the classification of scalar evolution equations

(IOP Publishing Ltd, 2013)

We define a new grading which we call the 'level grading' on the algebra of polynomials generated by the derivatives u(k+i) over the ring K-(k) of C-infinity functions of x t u u(1) ... u(k) where . This grading has the ...

#### A mathematical characterization of the gel point in sol-gel transition

(IOP Publishing Ltd, 2015)

We model the sol-gel transition in terms of Susceptible-Infected-Removed (SIR) and Susceptible-Exposed-Infected-Removed (SEIR) models and compare with experimental results. We show, numerically, that the "gel point" described ...

#### A MATHEMATICAL DESCRIPTION OF THE CRITICAL POINT IN PHASE TRANSITIONS

(World Scientific Publ Co Pte Ltd, 2013)

Let y(x) be a smooth sigmoidal curve, y((n)) be its nth derivative and {x(m,i)} and {x(a,i)}, i = 1, 2, ... , be the set of points where respectively the derivatives of odd and even order reach their extreme values. We ...

#### (3+3+2) warped-like product manifolds with Spin(7) holonomy

(Elsevier Science Bv, 2011)

We consider a generalization of eight-dimensional multiply warped product manifolds as a special warped product by allowing the fiber metric to be non-block diagonal. We define this special warped product as a (3 + 3 + 2) ...

#### On the Classification of Fifth Order Quasi-linear Non-constant Separant Scalar Evolution Equations of the KdV-Type

(Physical Soc Japan, 2012)

Fifth order, quasi-linear, non-constant separant evolution equations are of the form u(t) = A(partial derivative(5)u/partial derivative x(5)) + (B) over tilde, where A and (B) over tilde are functions of x, t, u and of the ...

#### Application of epidemic models to phase transitions

(Taylor & Francis Ltd, 2012)

The Susceptible-Infected-Recovered (SIR) and Susceptible-Exposed-Infected-Recovered (SEIR) models describe the spread of epidemics in a society. In the typical case, the ratio of the susceptible individuals fall from a ...

#### Maximal linear subspaces of strong self-dual 2-forms and the Bonan 4-form

(Elsevier Science Inc, 2011)

The notion of self-duality of 2-forms in 4-dimensions plays an eminent role in many areas of mathematics and physics, but although the 2-forms have a genuine meaning related to curvature and gauge-field-strength in higher ...