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Broward Estates, FL, United States

Ugueto G.N.,11111 Biscayne Boulevard | Harvey M.B.,Broward College
Herpetological Monographs | Year: 2010

Cnemidophorus nigricolor consists of at least three species rather than a single taxon distributed throughout the Venezuelan Caribbean islands. We describe two new species, one from Isla La Blanquilla and another from Isla La Tortuga. Both species were previously confused with C. nigricolor. The species from Isla La Tortuga is critically threatened by recent plans to develop the island for tourism. We comment on similarities among the two new species, C. nigricolor, and other insular Cnemidophorus. The whiptails from the southern Caribbean are revised and diagnoses are given for species inhabiting Aruba, Curaçao, Bonaire, and the Los Roques Archipelago. Additionally, Cnemidophorus ruthveni (formerly C. murinus ruthveni) is recognized as a full species. © 2010 The Herpetologists' League, Inc.

Ugueto G.N.,11111 Biscayne Boulevard No. 556 | Harvey M.B.,Broward College
Herpetological Monographs | Year: 2011

The common, terrestrial teiid lizards of the Ameiva ameiva complex have a broad Neotropical distribution from Costa Rica and Panama to Paraguay and northern Argentina. These lizards have also been reported from the Lesser Antilles, Trinidad, Tobago, Providencia, and the Swan Islands. The group has a complicated taxonomic history and has not been comprehensively reviewed. With the use of external morphology, we reviewed this complex in Venezuela. We conclude that A. ameiva (sensu lato) in Venezuela comprises at least four evolutionary species and recommend elevating A. ameiva (sensu stricto), A. atrigularis, and A. praesignis to species. On the other hand, we synonymize A. ameiva fischeri, A. a. ornata, and A. a. vogli, with A. praesignis; we synonymize A. a. laeta and A. a. petersii with A. ameiva; and we synonymize A. a. melanocephala with A. atrigularis. We designate a lectotype of A. atrigularis. Populations from savannahs of southern Monagas represent a new species described in this work. Both A. ameiva and A. praesignis exist as apparently viable breeding populations in southern Florida, USA. © 2011 The Herpetologists' League, Inc.

Lee Y.J.,Iowa State University | Lee Y.J.,Ames Laboratory | Perdian D.C.,Broward College | Song Z.,Ames Laboratory | And 5 more authors.
Plant Journal | Year: 2012

We discuss and illustrate recent advances that have been made to image the distribution of metabolites among cells and tissues of plants using different mass spectrometry technologies. These technologies include matrix-assisted laser desorption ionization, desorption electrospray ionization, and secondary ion mass spectrometry. These are relatively new technological applications of mass spectrometry and they are providing highly spatially resolved data concerning the cellular distribution of metabolites. We discuss the advantages and limitations of each of these mass spectrometric methods, and provide a description of the technical barriers that are currently limiting the technology to the level of single-cell resolution. However, we anticipate that advances in the next few years will increase the resolving power of the technology to provide unprecedented data on the distribution of metabolites at the subcellular level, which will increase our ability to decipher new knowledge concerning the spatial organization of metabolic processes in plants. © Published 2012. This article is a US Government work and is in the public domain in the USA.

Perdian D.C.,Broward College
Journal of Science Education and Technology | Year: 2013

Two distinct student groups, in terms of academic performance, were identified early in the semester as either being under-performing students or over-performing students using an online homework system. The students who are identified as under-performing received, on average, lower grades than their fellow students but spent more time completing the homework assignments. These students are great candidates for targeted advertisement of student resources such as tutoring services. The students who are identified in the over-performing student population received higher grades than their fellow students, but spent less time completing the homework assignments. These students are great candidates for honors programs, independent research projects, and peer-tutoring programs. Incorporating these evaluation criteria to online homework systems will allow instructors to quickly identify students in these academic student populations. © 2012 Springer Science+Business Media New York.

Allison M.A.,Florida International University | Joo S.F.,Broward College
Proceedings of the 9th International Conference on Computer Science and Education, ICCCSE 2014 | Year: 2014

A cardinal responsibility of a software engineer is to analyze a given problem and through semantic mapping, apply apropos techniques and constructs to develop viable software solutions. The dominant curriculum models for software engineers has focused on the solution space's declarative knowledge and has mostly relegated problem solving skills to that of a consequence of the primary educational process. In this paper we present a constructivist aware strategy to amend software engineering curricula by integrating problem solving skill development. To build this approach we examined mathematician Gyorgy Polya's heuristic of a generalized problem solving model in the context of software engineering (SE) and propose the necessary augmentation to support skill development. We take the position that Polya's approach may not only functionally address well defined problems encountered at an introductory level but is expandable to tackle ill-structured or wicked problems inherent in the design of complex systems. We present a controlled classroom study which investigates the utility of the proposed methodology to address a set of welldefined problems in a small representative student sampling. Our results show a significant reduction in time to solution given classroom support. © 2014 IEEE.

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