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Questions related to Applied Mathematics
In analysis of hydro-meteorologic variables, many times we encounter count based series exceeding certain threshold value. For example, number of days in a year having rainfall more than 100 mm or...
26 October 2018 834 1 View
Nowadays, Neural networks method , artificial intelligence , machine learning , pattern cognition and other these related topics are used to solve differential equations , linear and nonlinear...
10 October 2018 10,138 4 View
I would like to solve the next unbounded distributed delay differential equation with matlab dx/dt = x (r -- c Integrate[x(t-s) ds, {s, 0, Infinity}])
10 October 2018 2,652 1 View
It is related to applied mathematics
10 October 2018 3,420 1 View
Dear Fellow Applied Physicists, I have come across a simple problem turned complicated, where I attempt to solve a stationary 2D Laplace Equation (L.E) in order to better understand the effects...
10 October 2018 3,590 7 View
Let X be a continuous random variable having uniform distribution on [0,2π]. And there exists another random variable Y that depends on X such that Y=sinX and has the following PDF: (see...
10 October 2018 3,829 0 View
Dear all, I want to know 1st Whether Bivariate Johansan cointegration and Bivariate BEKK GARCH models can be applied on daily data of 7 years..derived from stock market or monthly data is...
22 September 2018 3,217 3 View
Will there be planetary type motion possible if force varies linearly or cubically with distance? If a body is revolving around another body then can i say with total confidence that the body is...
09 September 2018 8,930 4 View
In Euclidean geometry, one studies the basic elemental forms in one, two or three dimensions as lines, surfaces and volumes along with their angular correlations and other metric attributes. In...
09 September 2018 6,957 91 View
1. Apart from "penalizing models of different parameters", What are other reasons for using Adjusted coefficient of determination (Adj.R2) in judging or evaluating linear and/or nonlinear...
09 September 2018 5,049 2 View
Anyone please comment...and guide me regarding this matter
09 September 2018 2,873 4 View
Both Standard Error and Standard Deviation are functions of Mean. However, Which of them is more related to the mean of a population and which is better to be presented alongside with the mean in...
09 September 2018 8,883 3 View
I have an 8D nonlinear ODE system and I would like to find all the fixed points(that is, dy/dt=0). Since the dimension is high, it is not pratical to plot the nullclines and observe the fixed...
08 August 2018 7,247 3 View
What are some methods or approaches by which one can assess the quality of a MINLP problem? If we let the solver solve the relaxed problem, do we get a useful lower bound ? because, even if we...
08 August 2018 7,614 5 View
Please suggest a good institution for peaceful research and teaching without politics.
08 August 2018 2,903 2 View
Dear Sir/Madam; I am looking for an advise on a reference that gives a pure Initial Value Problem (Cauchy Problem) for 1D inhomogeneous Wave equation, and if possible describes a real life...
07 July 2018 9,946 1 View
Assume: du= f1(u,v).dx+f2(u,v).dy (1) dv= g1(u,v).dx+g2(u,v).dy (2) f1,f2, and, g1,g2 are continuous and known functions. We know further that implicitly h(u,v)=0 and hence we...
07 July 2018 6,465 10 View
I want to have insight over fluid-flow vector field, as I have an ordinary differential equation (ode): dv/du=-2(u2+v2)/(v2 - 5u2) where u and v are horizontal and vertical velocity components...
07 July 2018 3,506 6 View
Dear Prof. : I'm a Post-doctoral from Shandong University, Jinan City, China. I am seeking a visiting scholar position for one years. During my Ph.D. study, I have been doing research in the...
07 July 2018 4,160 6 View
Trying to solve the Hydro-Unit Commitment Problem (HUCP) , the most robust model of the problem, is in the MINLP form. One (seemingly lazy ) approach is to formulate the problem and let a...
07 July 2018 6,500 1 View
I'm doing a systematic review on the effectiveness of an intervention, all the studies I find used a mathematical epidemiology (Predictive study), I couldn't figure out how to classify it? is is a...
07 July 2018 1,924 1 View
Dear Sir/Madam; I am looking for an advise on a reference that gives a 1D Nonlinear Reaction Diffusion Equation Initial Value Problem, and if possible describes a real life application. Many...
07 July 2018 4,155 5 View
best (achievable) x-reg for singular solutions of nd incompressible euler equations by Székelyhidi jr.+de lellis and remarks/links with pressureless (regular) sols ? --on solutions "convex...
07 July 2018 826 29 View
Would you please explain to me what is the technical definition or explanation behind the point that, in a convex optimization program or space, the equality constraint must be affine.
06 June 2018 4,770 2 View