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Champagne J.,Penn State Erie The Behrend College
Journal of Homosexuality | Year: 2014

Because works of nonfiction are always composed of literary tropes and metaphors, they have to be read critically for the ways in which their truth claims are potentially structured by ideologies and stereotypes. This essay reads passages from Richard Sennett's sociological analysis Flesh and Stone, The Body and the City in Western Civilization and Joseph Brodsky's memoir Watermark in order to demonstrate how these alleged works of nonfiction shore up some dishearteningly familiar literary stereotypes of male homosexuality and participate in a tradition, dating from the 19th century, of linking the city of Venice with homosexuality and death. Copyright © Taylor & Francis Group, LLC. Source

Nikhare C.P.,Penn State Erie The Behrend College | Korkolis Y.P.,University of New Hampshire | Kinsey B.L.,University of New Hampshire
Journal of Manufacturing Science and Engineering, Transactions of the ASME | Year: 2015

The tube flaring process has been traditionally used to expand one end of a tube without changing its cross-sectional area. This simple process typically forms the product using a single punch. To delay failure and enhance formability, a two-step flaring process can be used. For example, if a significant elliptical flared shape is attempted in a one-step process, a necking/tearing failure would occur on the major axis of the ellipse. However, if a two-step process, starting with a mildly elliptical punch and followed by the final, sharply elliptical punch is used instead, the desired elliptical shape can be achieved. In this paper, the effects of the punch geometry of the first step on the deformation paths are numerically analyzed. By manipulating the deformation path, failure can be delayed so that higher formability is achieved. The numerical model is validated by comparison with experimental results. © 2015 by ASME. Source

Pinkney A.E.,U.S. Fish and Wildlife Service | Harshbarger J.C.,George Washington University | Karouna-Renier N.K.,U.S. Geological Survey | Jenko K.,U.S. Geological Survey | And 4 more authors.
Science of the Total Environment | Year: 2011

We surveyed four Chesapeake Bay tributaries for skin and liver tumors in brown bullhead (Ameiurus nebulosus). We focused on the South River, where the highest skin tumor prevalence (53%) in the Bay watershed had been reported. The objectives were to 1) compare tumor prevalence with nearby rivers (Severn and Rhode) and a more remote river (Choptank); 2) investigate associations between tumor prevalence and polynuclear aromatic hydrocarbons (PAHs) and alkylating agents; and 3) statistically analyze Chesapeake Bay bullhead tumor data from 1992 through 2008. All four South River collections exhibited high skin tumor prevalence (19% to 58%), whereas skin tumor prevalence was 2%, 10%, and 52% in the three Severn collections; 0% and 2% in the Choptank collections; and 5.6% in the Rhode collection. Liver tumor prevalence was 0% to 6% in all but one South River collection (20%) and 0% to 6% in the three other rivers. In a subset of samples, PAH-like biliary metabolites and 32P-DNA adducts were used as biomarkers of exposure and response to polycyclic aromatic compounds (PACs). Adducts from alkylating agents were detected as O6-methyl-2'-deoxyguanosine (O6Me-dG) and O6-ethyl-2'-deoxyguanosine (O6Et-dG) modified DNA. Bullheads from the contaminated Anacostia River were used as a positive control for DNA adducts. 32P-DNA adduct concentrations were significantly higher in Anacostia bullhead livers compared with the other rivers. We identified alkyl DNA adducts in bullhead livers from the South and Anacostia, but not the Choptank. Neither the PAH-like bile metabolite data, sediment PAH data, nor the DNA adduct data suggest an association between liver or skin tumor prevalence and exposure to PACs or alkylating agents in the South, Choptank, Severn, or Rhode rivers. Logistic regression analysis of the Chesapeake Bay database revealed that sex and length were significant covariates for liver tumors and length was a significant covariate for skin tumors. © 2011. Source

Hamasha M.M.,University of Business and Technology | Alazzam A.,Universal Solution | Hamasha S.,Binghamton University State University of New York | Aqlan F.,Penn State Erie The Behrend College | And 2 more authors.
IEEE Transactions on Components, Packaging and Manufacturing Technology | Year: 2015

In this paper, a stochastic model is developed to analyze the performance of a flexible manufacturing cell (FMC). The FMC considered in this paper consists of a single conveyor, a single robot, and one or more machine(s). The conveyor belt delivers the working part to the robot, which loads it onto the machine. A Markov chain model is constructed for one-machine and two-machine FMCs, after which the model is generalized to an FMC with n machines. Most importantly, the model provides an estimate of the overall machine utilization and production rate for the FMC under consideration and also illustrates the effect of different operational factors on machine utilization and production rate. The results indicated that the overall machine utilization increases with conveyor belt and robot delivery rates and decreases with machine rate, as expected. However, this decrease or the increase in the overall machine utilization is sharp at low levels of each parameter (e.g., conveyor belt delivery and robot loading), but it gradually stabilizes at higher levels of the parameters. Finally, the production rate increases sharply at low levels of each parameter and gradually stabilizes at higher levels. © 2015 IEEE. Source

Foyle A.M.,Penn State Erie The Behrend College | Naber M.D.,Penn State Erie The Behrend College
Environmental Earth Sciences | Year: 2012

Bluff retreat is an ongoing problem on the southern Great Lakes coast of the United States where Pleistocene unconsolidated sediments overlie Devonian bedrock. This retreat results in loss of sediment from the coastal zone and a decrease in coastal water quality, and is of concern because evaluating landslide hazards and developing regulations on coastal construction setbacks must account for spatial variability in coastal retreat. The goal of this pilot study is to explain and quantify short to medium term spatial variability in bluff-retreat patterns, magnitudes, and rates along a 6 km littoral cell on the Pennsylvania coast of Lake Erie. High-resolution LiDAR data covering a one-decade time frame (1998-2007) permit mapping of the bluff-crest position on two comparable, high-quality data sets. The rates of bluff retreat range from unresolvable (~20% of coast) to 2.2 m/year, averaging 0.22 ± 0.1 m/year. Average-annual change rates and 9-year net movement values show an along-coast periodicity, with a spatial wavelength of ~1 km and an amplitude of 0.2 m/year. Observed variability is inferred to occur because variations in surface watershed size and groundwater recharge area, topographic shielding of the bluff from overland flow, and groundwater-table topography, cause groundwater discharge and overland flow to the bluff face to vary along the coast. In addition, short ravines (< 300 m in length) fed by groundwater seepage distort groundwater equipotential lines and cause locally enhanced bluff retreat. While other factors likely influence bluff retreat spatially along this coast, their roles are relatively minor at the scale of this study. © 2011 Springer-Verlag. Source

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