Showing 1 - 10 of 833
Balanced infinite periodic minimal surface families that contain the cubic Gyroid (G), Diamond (D) and Primitive (P) surfaces are studied in terms of their global packing and local curvature properties. These properties are central to understanding the formation of mesophases in amphiphile and...
Persistent link: https://www.econbiz.de/10009281269
melt of binary monodisperse copolymers with molecules of arbitrary chemical structure are theoretically scrutinized. For …
Persistent link: https://www.econbiz.de/10009282462
Persistent link: https://www.econbiz.de/10009282189
The size selection of nanodots during the growth is studied by using a reaction kinetic model, where reaction rates depend on the dot size. The characteristic feature of the reaction rates is the energetics, where the free energy of dots has a minimum at the certain dot size. The model equations...
Persistent link: https://www.econbiz.de/10009280679
We show that the asymptotic mean of the log-likelihood ratio in a misspecified model is a differential geometric quantity that is related to the exponential curvature of Efron (1978), Amari (1982), and the preferred point geometry of Critchley et al. (1993, 1994). The mean is invariant with...
Persistent link: https://www.econbiz.de/10010292073
The issue of the non-invariance of the Wald test under nonlinear reparametrisations of the restrictions under test is studied from a differential geometric viewpoint. Quantities that can be defined in purely geometrical terms are by construction invariant under reparametrisation, and various...
Persistent link: https://www.econbiz.de/10011940463
This paper deals with further developments of the new theory that applies stochastic differential geometry (SDG) to dynamics of interest rates. We examine mathematical constraints on the evolution of interest rate volatilities that arise from stochastic differential calculus under assumptions of...
Persistent link: https://www.econbiz.de/10009436403
The partial (ceteris paribus) effects of interest in nonlinear and interactive linear models are heterogeneous as they can vary dramatically with the underlying observed or unobserved covariates. Despite the apparent importance of heterogeneity, a common practice in modern empirical work is to...
Persistent link: https://www.econbiz.de/10011445788
The partial (ceteris paribus) effects of interest in nonlinear and interactive linear models are heterogeneous as they can vary dramatically with the underlying observed or unobserved covariates. Despite the apparent importance of heterogeneity, a common practice in modern empirical work is to...
Persistent link: https://www.econbiz.de/10011405700
Persistent link: https://www.econbiz.de/10011797596