Jones B.K.,Brookdale Community College
Culture, Agriculture, Food and Environment | Year: 2011
Through a study of modified natural landscapes, particularly cranberry bogs, this article investigates the broad understandings of nature and wilderness. In relying on a nature as wilderness paradigm to identify what is ecologically valuable, the potential exists to disregard altered nature as ecologically damaged. This approach to understanding nature discounts the value of agricultural sites that demonstrate another way of seeing nature, one that appreciates its resilience. This article strives to understand how current metaphors that define nature as pristine fail to consider how altered nature can and does have significant ecological value. © 2011 by the American Anthropological Association.
Manning E.P.,Brookdale Community College
Proceedings of the 12th Annual Genetic and Evolutionary Computation Conference, GECCO '10 | Year: 2010
Cycling has been an obstacle to coevolution of machine-learning agents. Monotonic algorithms seek continual improvement with respect to a solution concept; seeking an agent or set of agents that approaches the true solution without cycling. Algorithms that guarantee monotonicity generally require unlimited storage. One such algorithm is the Nash Memory, which uses the Nash Equilibrium as the solution concept. The requirement for unbounded storage is an obstacle to the use of this algorithm in large applications. This paper demonstrates the performance of the Nash Memory algorithm with fixed storage in coevolving a population of moderately large agents (with knowledge represented as n-tuple networks) learning a function with a large state space (an evaluation function for the game of Othello). The success of the algorithm results from the diversity of the agents produced, and the corresponding need for improved global performance in order for agents to survive and reproduce. The algorithm can be expected to converge to a region of highest performance within the capability of the search operators. Copyright 2010 ACM.
Spiegelberg B.D.,Rider University |
Palmere Sh.L.,Rider University |
Ebner S.,Brookdale Community College |
Focht A.,Rider University |
And 2 more authors.
Oxidation Communications | Year: 2012
The oxidation of lipid and protein components of human low-density lipoprotein (LDL) has a significant effect on the atherogenic properties of this complex molecule. In vitro assays on LDL isolated from human serum have contributed significantly to the understanding of the oxidation process and its inhibition by dietary and pharmacologic antioxidants. In an effort to expand these assays, we sought alternative, more accessible, oxidation substrates. Here, hen egg yolk (HEY) LDL enriched via a simple procedure was subjected to metal- or enzyme-catalysed oxidation. CuSO4-catalysed lipid oxidation in a dose-dependent and highly consistent manner as measured by thiobarbituric acid reactive substances (TBARS) assays. The relevance of this oxidation was confirmed by inhibition by bona fide antioxidants α-tocopherol, butylated hydroxytoluene, and EDTA. The more biologically relevant catalyst 15-lipoxygenase oxidised HEY LDL to form conjugated dienes with kinetics similar to that published for human serum LDL. Our results suggest that HEY LDL can serve as a highly efficient and consistent substrate in assays designed to complement studies of human serum LDL.
Morris N.,Temple University |
Gilpin D.R.,Arizona State University |
Lenos M.,Brookdale Community College |
Hobbs R.,Temple University
Journal of Health Communication | Year: 2011
This study examined Philadelphia Puerto Ricans' interpretations of the Surgeon General's warnings that appear on cigarette packaging and in advertisements. In-home family focus groups in which participants were asked to comment on magazine cigarette advertisements showed a great variety of interpretations of the legally mandated warning labels. These findings (a) corroborate and add to research in public health and communications regarding the possibility of wide variations in message interpretations and (b) support the call for public health messages to be carefully tested for effectiveness among different social groups. The article's focus on Puerto Ricans addresses the problem of misleading conclusions that can arise from aggregating all Latino subpopulations into one group. The use of a naturalistic setting to examine interpretations of messages about smoking departs from the experimental methods typically used for such research and provides new evidence that even a seemingly straightforward message can be interpreted in multiple ways. Understanding and addressing differences in message interpretation can guide public health campaigns aimed at reducing health disparities. © 2011 Taylor & Francis Group, LLC.
Manning E.P.,Brookdale Community College
IEEE Transactions on Computational Intelligence and AI in Games | Year: 2010
Finding the best strategy for winning a game using self-play or coevolution can be hindered by intransitivity among strategies and a changing fitness landscape. Nash Memory has been proposed as an archive for coevolution, to counter intransitivity and provide a more consistent fitness landscape. A lack of bounds on archive size might impede its use in a large, complex domain, such as the game of Othello, with strategies described by n$-tuple networks. This paper demonstrates that even with a bounded-size archive, an evolving population can continue to show progress past the point where self-play no longer can. Characteristics of Nash equilibria are shown to be valuable in the measurement of performance. In addition, a technique for automated selection of features is demonstrated for the $n$-tuple networks. © 2010 IEEE.