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- David W. Dreisigmeyer, Jelena M Stajic, Ilya Nemenman, William S. Hlavacek, M. E. Wall
- IET systems biology
- 2008

The authors have developed a mathematical model of regulation of expression of the Escherichia coli lac operon, and have investigated bistability in its steady-state induction behaviour in theâ€¦ (More)

- Djamila Aouada, David W. Dreisigmeyer, Hamid Krim
- 2008 IEEE Computer Society Conference on Computerâ€¦
- 2008

In this paper, we present a novel intrinsic geometric representation of 3D objects. We add the proposed modeling of objects to their topological graphs to ensure a full and compact descriptionâ€¦ (More)

We reexamine the problem of having nonconservative equations of motion arise from the use of a variational principle. In particular, a formalism is developed that allows the inclusion of fractionalâ€¦ (More)

- RIEMANNIAN MANIFOLDS, David W. Dreisigmeyer
- 2006

We generalize the Nelder-Mead simplex and LTMADS algorithms and, the frame based methods for function minimization to Riemannian manifolds. Examples are given for functions defined on the specialâ€¦ (More)

We comment on some recent attempts to model nonconservative systems with fractional derivatives. It is proven that it is impossible to derive a single, retarded equation of motion using a variationalâ€¦ (More)

- A. Mammoli, C. Birk Jones, H. Barsun, David W. Dreisigmeyer, Greg Goddard, O. B. Lavrova
- PES T&D 2012
- 2012

For the commercial building sector, the fraction of peak electric load due to cooling sometimes approaches 50%. Meeting this load can create severe problems for electric utilities. Building-scaleâ€¦ (More)

Wepresent a general procedure for handling equality constraints in optimization problems that is of particular use in direct search methods. First we will provide the necessary background inâ€¦ (More)

- Joshua Thompson, David W. Dreisigmeyer, Terry Jones, Michael L Kirby, Joshua Ladd
- 2010 International Conference on Dependableâ€¦
- 2010

This investigation presents two distinct and novel approaches for the prediction of system failures occurring in Oak Ridge National Laboratory's Blue Gene/P supercomputer. Each technique uses rawâ€¦ (More)

Direct search methods are mainly designed for use in problems with no equality constraints. However, there are many instances where the feasible set is of measure zero in the ambient space and noâ€¦ (More)

This work builds on the Volterra series formalism presented in [D. W. Dreisigmeyer and P. M. Young, J. Phys. A 36, 8297, (2003)] to model nonconservative systems. Here we treat Lagrangians andâ€¦ (More)