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State College, PA, United States

Rutter M.A.,Behrend College
Journal of Great Lakes Research | Year: 2010

The Great Lakes Water Quality Agreement specifies "fish tumors or other deformities" as one of the 14 beneficial use impairments that can be used to declare a geographic area within the Great Lakes an Area of Concern (AOC). The International Joint Commission has suggested that the fish tumor impairment can be delisted when fish tumor incidence in the AOC does not exceed rates at unimpacted control sites. This paper presents a statistical technique utilizing Bayesian hierarchical logistic models to estimate tumor incidence on brown bullheads (Ameiurus nebulosus) in an AOC and in candidate least impacted control sites (LICS). Liver and skin tumor incidence are estimated using age, length, weight, and gender as possible covariates using a hierarchical framework to account for a sampling design in which sites are sampled over multiple years and/or at multiple sublocations within the site. By utilizing a Bayesian approach, estimates of uncertainty for tumor incidence in sites with no observed tumors can be obtained. The posterior distributions of tumor incidence can then be used to identify LICS for the watershed and subsequently compare the tumor incidence in the AOC to the LICS using a Bayesian form of the two one-side tests for equivalence procedure. Presque Isle Bay (Erie, PA) in the Lake Erie watershed is used as a case study to demonstrate the technique. © 2010 International Association for Great Lakes Research. Source


Justik M.W.,Behrend College
Annual Reports on the Progress of Chemistry - Section A | Year: 2010

This chapter provides a digest of the literature reported during 2009 concerning the noble gases and compounds containing these elements. Its intent is to highlight discovery and provide insight into current research trends. © 2010 The Royal Society of Chemistry. Source


Mastroberardino A.,Behrend College | Mahabaleswar U.S.,Government First Grade College for Women
Journal of Porous Media | Year: 2013

We present an analysis of mixed convection boundary layer flow of an incompressible and electrically conducting viscoelastic fluid over a linearly stretching surface embedded in a porous medium. The momentum equation includes the effect of the buoyancy force due to free convection. The thermal equation includes the effects of thermal radiation and viscous dissipation. We consider two general types of nonisothermal boundary conditions, namely, prescribed surface temperature and prescribed heat flux. The governing partial differential equations for the fluid flow and temperature are reduced to a nonlinear system of ordinary differential equations which are solved analytically using the homotopy analysis method (HAM). Convergence of the HAM solutions is discussed in detail. The effects of various parameters on the skin friction coefficient and wall heat transfer are presented along with plots of the velocity and temperature profiles. © 2013 by Begell House, Inc. Source


Mastroberardino A.,Behrend College
Applied Mathematics and Mechanics (English Edition) | Year: 2013

The steady, laminar, incompressible flow and heat transfer of a viscous fluid between two circular cylinders for two different types of thermal boundary conditions are investigated. The governing Navier-Stokes and thermal equations of the flow are reduced to a nonlinear system of ordinary differential equations. The equations are solved analytically using the homotopy analysis method (HAM). Convergence of the HAM solutions is discussed in detail. These solutions are then compared with recently obtained numerical and perturbative solutions. Plots of the velocity and temperature profiles are provided for various values of the relevant parameters. © 2013 Shanghai University and Springer-Verlag Berlin Heidelberg. Source


Williams J.L.,Behrend College
Plastics Engineering | Year: 2013

Project Management Maturity (PMM) is a new area within the study of Project Management. Each of the various Maturity Models level is demonstrated by various characteristics related to project planning, execution, management, and quality. A survey was constructed to estimate the project management maturity in the injection mold building industry. This survey was designed to produce a basic overview of the level of project management maturity and organizational size within the mold building industry. The results of the survey indicate that project management maturity does appear to change with organization size, but not within all the areas covered by this survey. Furthermore, these results also correlated with existing research in terms of project management processes utilized in SME's. Project planning, leading, and tracking showed the largest variation in maturity level. This variation is likely driven by the needs and resource availability of these organizations. Source

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