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Lawton, OK, United States

Cameron University is a four-year, state-funded university located in Lawton, Oklahoma, that offers more than 50 degrees through two-year, four-year, and graduate programs. The degree programs emphasize the liberal arts, science and technology, and graduate and professional studies. Cameron is the only Oklahoma university which offers associate, bachelor's, and master’s degrees at one site. Wikipedia.

Cho Y.J.,Gyeongsang National University | Argyros I.K.,Cameron University | Petrot N.,Naresuan University
Computers and Mathematics with Applications | Year: 2010

In this paper, we introduce an iterative method for finding a common element of the set of solutions of the generalized equilibrium problems, the set of solutions for the systems of nonlinear variational inequalities problems and the set of fixed points of nonexpansive mappings in Hilbert spaces. Furthermore, we apply our main result to the set of fixed points of an infinite family of strict pseudo-contraction mappings. The results obtained in this paper are viewed as a refinement and improvement of the previously known results. © 2010 Elsevier Ltd. All rights reserved. Source

Kengwoung-Keumo J.-J.,Cameron University
Mathematical Biosciences and Engineering | Year: 2016

We propose a model of two-species competition in the chemostat for a single growth-limiting, nonreproducing resource that extends that of Roy [38]. The response functions are specified to be Michaelis-Menten, and there is no predation in Roy's work. Our model generalizes Roy's model to general uptake functions. The competition is exploitative so that species compete by decreasing the common pool of resources. The model also allows allelopathic effects of one toxin-producing species, both on itself (autotoxicity) and on its nontoxic competitor (phytotoxicity). We show that a stable coexistence equilibrium exists as long as (a) there are allelopathic effects and (b) the input nutrient concentration is above a critical value. The model is reconsidered under instantaneous nutrient recycling. We further extend this work to include a zooplankton species as a fourth interacting component to study the impact of predation on the ecosystem. The zooplankton species is allowed to feed only on the two phytoplankton species which are its perfectly substitutable resources. Each of the models is analyzed for boundedness, equilibria, stability, and uniform persistence (or permanence). Each model structure fits very well with some harmful algal bloom observations where the phytoplankton assemblage can be envisioned in two compartments, toxin producing and non-toxic. The Prymnesium parvum literature, where the suppressing effects of allelochemicals are quite pronounced, is a classic example. This work advances knowledge in an area of research becoming ever more important, which is understanding the functioning of allelopathy in food webs. Source

Ma L.,Georgia Institute of Technology | Moro R.,Cameron University | Bowlan J.,Georgia Institute of Technology | De Heer W.A.,Georgia Institute of Technology
Physical Review Letters | Year: 2014

Simultaneous magnetic and electric deflection measurements of rhodium clusters (RhN, 6≤N≤40) reveal ferromagnetism and ferroelectricity at low temperatures, while neither property exists in the bulk metal. Temperature-independent magnetic moments (up to 1μB per atom) are observed, and superparamagnetic blocking temperatures up to 20 K. Ferroelectric dipole moments on the order of 1D with transition temperatures up to 30 K are observed. Ferromagnetism and ferroelectricity coexist in rhodium clusters in the measured size range, with size-dependent variations in the transition temperatures that tend to be anticorrelated in the range n=6-25. Both effects diminish with size and essentially vanish at N=40. The ferroelectric properties suggest a Jahn-Teller ground state. These experiments represent the first example of multiferroic behavior in pure metal clusters. © 2014 American Physical Society. Source

Nandedkar A.,Cameron University | Midha V.,University of Texas-Pan American
Computers in Human Behavior | Year: 2012

Piracy continues to be a threat to the global economy. Previous literature on factors influencing individual's attitude towards piracy indicates that as perceived risk increases, individuals attitude of acceptance of piracy should decrease. In spite of the increased risks, some people pirate, there has been no explanation for this apparent paradox. We attempt to explain this paradox by using the concept of optimism bias. Results of structural equation modeling using a sample of 219 college students provide evidence that individuals having an optimism bias engage in piracy because they consider themselves to be at lower risk than average compared to a group. Implications for practice and future research avenues are discussed. © 2011 Elsevier Ltd. All rights reserved. Source

Midha V.,University of Texas-Pan American | Nandedkar A.,Cameron University
Computers in Human Behavior | Year: 2012

Research on the application of avatars in the virtual teams is growing. In this study, we examined the effect of perceived similarity of an avatar user with his/her avatar on the perceptions of his/her identifiability within a virtual team. The study utilized a sample of 124 users actively involved in Second Life, a virtual world platform. Results of structural equation modeling utilizing the partial least squares method corroborate the hypothesis. An important contribution of this research is to inform practitioners about the critical role that users' similarity with the avatar plays in enhancing their identifiability. We draw conclusions based on the result and identify some important avenues for future research. © 2012 Elsevier Ltd. All rights reserved. Source

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