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2007

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Effects Of Experimental Reduction Of Light Availability On The Seagrass Amphibolis Griffithii, P Mackey, Cj Collier, Paul Lavery Jan 2007

Effects Of Experimental Reduction Of Light Availability On The Seagrass Amphibolis Griffithii, P Mackey, Cj Collier, Paul Lavery

Research outputs pre 2011

The response of the meadow-forming seagrass Amphibolis griffithii (Black) den Hartog to light reduction was examined over a 3 mo period and a subsequent 1 mo recovery period. Morphological and physiological variables were measured in meadows subjected to an average reduction in photosynthetic photon flux density (PPFD) of 88% relative to unshaded controls. Leaf biomass, leaf cluster density and the number of leaves per cluster all declined in shaded plots, and after 3 mo were about 30, 50 and 60% of the controls, respectively. Leaf extension was one-third that of the control plots. Epiphyte biomass in shaded plots was 44% …


Morphological, Growth And Meadow Characteristics Of The Seagrass Posidonia Sinuosa Along A Depth-Related Gradient Of Light Availability, Cj Collier, Paul Lavery, Rj Masini, Pj Ralph Jan 2007

Morphological, Growth And Meadow Characteristics Of The Seagrass Posidonia Sinuosa Along A Depth-Related Gradient Of Light Availability, Cj Collier, Paul Lavery, Rj Masini, Pj Ralph

Research outputs pre 2011

Morphological and growth characteristics of the meadow-forming seagrass Posidonia sinuosa (Cambridge et Kuo), were measured along a depth-related gradient of light to infer its response to long-term differences in light availability. Morphometric measurements were carried out at 6 depths between 1.6 and 9.0 m in summer and winter at Cockburn Sound and summer only at Warnbro Sound in south-western Australia. The minimum light requirement for P. sinuosa of 8.5% sub-surface light was among the lower range reported for seagrasses. Its slow growth rate (0.5–1.5 mgdry shoot–1 d–1), relative to similarly sized species, may contribute to the low light requirements of …


Design-Based Research And Doctoral Students: Guidelines For Preparing A Dissertation Proposal, J Herrington, S Mckenney, T Reeves, Ron Oliver Jan 2007

Design-Based Research And Doctoral Students: Guidelines For Preparing A Dissertation Proposal, J Herrington, S Mckenney, T Reeves, Ron Oliver

Research outputs pre 2011

At first glance, design-based research may appear to be such a long-term and intensive approach to educational inquiry that doctoral students, most of whom expect to complete their Ph.D. degree in 4-5 years, should not attempt to adopt this approach for their doctoral dissertations. In this paper, we argue that design-based research is feasible for doctoral students, and that candidates should be encouraged to engage in it. More specifically, we describe the components of a dissertation proposal or prospectus that utilizes design-based research methods in the context of educational technology research.


Hybrid Training With Binary Search Protocol For Wireless Sensor Networks, Ruzana Ishak, Qingwen Xu, Stephan Olariu, Shaharuddin Salleh Jan 2007

Hybrid Training With Binary Search Protocol For Wireless Sensor Networks, Ruzana Ishak, Qingwen Xu, Stephan Olariu, Shaharuddin Salleh

Computer Science Faculty Publications

Locationing problem in Wireless Sensor Networks(WSN) can be viewed as a general distributed sensor problem. It is with sensors that can discover other nodes or estimate ranges between nodes. that serve as position references. In this paper. we show that sensors acquire coarse-grain location awareness by the training protocol. The training protocol which hybrids the synchronization and training procedure. In this protocol, synchronization and training are combined into one scheme. The sink node sends two beacons in each slot instead of one. In the training, sensor searching for its location using a binary search scheme. Our simulation results shown less …


Heat Shock Protein 90: A Potential Therapeutic Target In Leukemic Progenitor And Stem Cells Harboring Mutant Bcr-Abl Resistant To Kinase Inhibitors, C Peng, Dongguang Li, L Shaoguang Jan 2007

Heat Shock Protein 90: A Potential Therapeutic Target In Leukemic Progenitor And Stem Cells Harboring Mutant Bcr-Abl Resistant To Kinase Inhibitors, C Peng, Dongguang Li, L Shaoguang

Research outputs pre 2011

Development of drug resistance has become a major obstacle for tyrosine kinase inhibitors (TKIs) in the treatment of Philadelphia chromosome-positive (Ph+) chronic myelogenous leukemia (CML) and other cancers. The BCR-ABL-T315I mutant does not respond to clinically available TKIs, although some newly developed anti-BCR-ABL-T315I TKIs are now being tested in patients. TKIs transiently inhibit kinase activity of BCR-ABL, but do not reduce the level of the BCR-ABL protein. Elimination of mutant BCR-ABL protein would provide a new therapeutic strategy for treating Ph+ leukemia. We recently showed that inhibition of heat shock protein 90 (Hsp90) by a novel Hsp90 inhibitor, IPI-504, causes …


Are Botanists Becoming The Dinosaurs Of Biology In The 21st Century?, Dennis W. Woodland Jan 2007

Are Botanists Becoming The Dinosaurs Of Biology In The 21st Century?, Dennis W. Woodland

Faculty Publications

The number of botany students, botany classes, botany departments in universities and botanists attending conventions has been declining over many years in North America. This is part of a general trend throughout the field of organismal biology, not just botany. The history leading up to the situation today in North America, is discussed and reasons are given for this trend over the last century of time. Seven ways to keep botany a viable occupation are discussed otherwise botany, in the 21st century, may go the way of the dinosaur. © 2007.


Multiple Mixed-Type Attractors In A Competition Model, J. M. Cushing, Shandelle M. Henson, Chantel C. Blackburn Jan 2007

Multiple Mixed-Type Attractors In A Competition Model, J. M. Cushing, Shandelle M. Henson, Chantel C. Blackburn

Faculty Publications

We show that a discrete-time, two-species competition model with Ricker (exponential) nonlinearities can exhibit multiple mixed-type attractors. By this is meant dynamic scenarios in which there are simultaneously present both coexistence attractors (in which both species are present) and exclusion attractors (in which one species is absent). Recent studies have investigated the inclusion of life-cycle stages in competition models as a casual mechanism for the existence of these kinds of multiple attractors. In this paper we investigate the role of nonlinearities in competition models without life-cycle stages. © 2007 Taylor & Francis Group, LLC.


Axon And Dendrite Geography Predict The Specificity Of Synaptic Connections In A Functioning Spinal Cord Network, Wc Li, T Cooke, B Sautois, Et Al Jan 2007

Axon And Dendrite Geography Predict The Specificity Of Synaptic Connections In A Functioning Spinal Cord Network, Wc Li, T Cooke, B Sautois, Et Al

School of Engineering, Computing and Mathematics

Background: How specific are the synaptic connections formed as neuronal networks develop and can simple rules account for the formation of functioning circuits? These questions are assessed in the spinal circuits controlling swimming in hatchling frog tadpoles. This is possible because detailed information is now available on the identity and synaptic connections of the main types of neuron. Results: The probabilities of synapses between 7 types of identified spinal neuron were measured directly by making electrical recordings from 500 pairs of neurons. For the same neuron types, the dorso-ventral distributions of axons and dendrites were measured and then used to …


Evolution Of Prehension Ability In An Anthropomorphic Neurorobotic Arm, G Massera Jan 2007

Evolution Of Prehension Ability In An Anthropomorphic Neurorobotic Arm, G Massera

School of Engineering, Computing and Mathematics

In this paper, we show how a simulated anthropomorphic robotic arm controlled by an artificial neural network can develop effective reaching and grasping behaviour through a trial and error process in which the free parameters encode the control rules which regulate the fine-grained interaction between the robot and the environment and variations of the free parameters are retained or discarded on the basis of their effects at the level of the global behaviour exhibited by the robot situated in the environment. The obtained results demonstrate how the proposed methodology allows the robot to produce effective behaviours thanks to its ability …


Biological Status Of Leatherside Chub: A Framework For Conservation Of Western Freshwater Fishes, Mark C. Belk, Jerald B. Johnson Jan 2007

Biological Status Of Leatherside Chub: A Framework For Conservation Of Western Freshwater Fishes, Mark C. Belk, Jerald B. Johnson

Faculty Publications

Outside of anadromous salmonids and a few endangered species, biology of native freshwater fishes of western North America is poorly known. What do we need to know to effectively manage native species and avoid decline and extinction? A recent analysis of the role of science in the Pacific salmon controversy outlines a clear framework for biological evaluation and management of native species. This framework has three components: (1) determine status of populations based on genetic and ecological variation, (2) identify and quantify threats to populations, and (3) determine actions to alleviate threats and promote conservation of populations. We use our …


Analysis Of Supercritical Stratified Tidal Flow In A Scottish Fjord, Nataliya Stashchuk, Mark Inali, Vasiliy Vlasenko Jan 2007

Analysis Of Supercritical Stratified Tidal Flow In A Scottish Fjord, Nataliya Stashchuk, Mark Inali, Vasiliy Vlasenko

School of Biological and Marine Sciences

The baroclinic tidal regime of the fjord Loch Etive (Scotland) is studied. Analysis is performed on the basis of both in situ data and numerical simulations, with the use of a fully nonlinear nonhydrostatic fine-resolution model. It was found that the crest of the sill that separates Loch Etive into inner and outer parts is subjected to a supercritical flow regime with maximum Froude numbers in excess of 5. Strong supercritical conditions lead to the formation of flow separation just above the sill's crest. As is inherent to jet-type fjordic systems, this, in turn, leads to a weak nonlinear baroclinic …


Planktic Foraminifera From The Proposed Gssp For The Oxfordian Stage: Redcliff Point, Near Weymouth, M.B. Hart, T. Aze, W. Hudson, C.W. Smart Jan 2007

Planktic Foraminifera From The Proposed Gssp For The Oxfordian Stage: Redcliff Point, Near Weymouth, M.B. Hart, T. Aze, W. Hudson, C.W. Smart

School of Geography, Earth and Environmental Sciences

In the course of the stratigraphical and palaeontological investigations for the Global Stratotype Section and Point (GSSP) for the base of the Oxfordian Stage at Recicliff (near Weymouth) an assemblage of planktic foraminifera has been described. Planktic foraminifera are exceptionally rare in the Jurassic of the United Kingdom and only a few records have been reported in the last few years. At Redcliff, the assemblage is preserved as pyrite steinkerns, but the fauna contains a number of morphotypes which match onto known species from this interval (Globuligerina oxfordiana, Compactogerina stellapolaris) while others have no described species to which they can …


Predictive Oncology: A Review Of Multidisciplinary, Multiscale In Silico Modeling Linking Phenotype, Morphology And Growth, Sandeep Sanga, Hermann B. Frieboes, Xiaoming Zheng, Robert Gatenby, Elaine L. Bearer, Vittorio Cristini Jan 2007

Predictive Oncology: A Review Of Multidisciplinary, Multiscale In Silico Modeling Linking Phenotype, Morphology And Growth, Sandeep Sanga, Hermann B. Frieboes, Xiaoming Zheng, Robert Gatenby, Elaine L. Bearer, Vittorio Cristini

Faculty, Staff and Student Publications

Empirical evidence and theoretical studies suggest that the phenotype, i.e., cellular- and molecular-scale dynamics, including proliferation rate and adhesiveness due to microenvironmental factors and gene expression that govern tumor growth and invasiveness, also determine gross tumor-scale morphology. It has been difficult to quantify the relative effect of these links on disease progression and prognosis using conventional clinical and experimental methods and observables. As a result, successful individualized treatment of highly malignant and invasive cancers, such as glioblastoma, via surgical resection and chemotherapy cannot be offered and outcomes are generally poor. What is needed is a deterministic, quantifiable method to enable …


Computer Simulation Of Glioma Growth And Morphology, Hermann B. Frieboes, John S Lowengrub, S Wise, X Zheng, Paul Macklin, Elaine L. Bearer, Vittorio Cristini Jan 2007

Computer Simulation Of Glioma Growth And Morphology, Hermann B. Frieboes, John S Lowengrub, S Wise, X Zheng, Paul Macklin, Elaine L. Bearer, Vittorio Cristini

Faculty, Staff and Student Publications

Despite major advances in the study of glioma, the quantitative links between intra-tumor molecular/cellular properties, clinically observable properties such as morphology, and critical tumor behaviors such as growth and invasiveness remain unclear, hampering more effective coupling of tumor physical characteristics with implications for prognosis and therapy. Although molecular biology, histopathology, and radiological imaging are employed in this endeavor, studies are severely challenged by the multitude of different physical scales involved in tumor growth, i.e., from molecular nanoscale to cell microscale and finally to tissue centimeter scale. Consequently, it is often difficult to determine the underlying dynamics across dimensions. New techniques …


All In The Family: Atypical Hsp70 Chaperones Are Conserved Modulators Of Hsp70 Activity, Lance Shaner, Kevin A Morano Jan 2007

All In The Family: Atypical Hsp70 Chaperones Are Conserved Modulators Of Hsp70 Activity, Lance Shaner, Kevin A Morano

Faculty, Staff and Student Publications

Divergent relatives of the Hsp70 protein chaperone such as the Hsp110 and Grp170 families have been recognized for some time, yet their biochemical roles remained elusive. Recent work has revealed that these "atypical" Hsp70s exist in stable complexes with classic Hsp70s where they exert a powerful nucleotide-exchange activity that synergizes with Hsp40/DnaJ-type cochaperones to dramatically accelerate Hsp70 nucleotide cycling. This represents a novel evolutionary transition from an independent protein-folding chaperone to what appears to be a dedicated cochaperone. Contributions of the atypical Hsp70s to established cellular roles for Hsp70 now must be deciphered.


Deep-Sea Coral Distribution On Seamounts, Oceanic Islands, And Continental Slopes In The Northeast Atlantic, J Hall-Spencer, A Rogers, J Davies, A Foggo Jan 2007

Deep-Sea Coral Distribution On Seamounts, Oceanic Islands, And Continental Slopes In The Northeast Atlantic, J Hall-Spencer, A Rogers, J Davies, A Foggo

School of Biological and Marine Sciences

A database of deep-water (> 200 m) antipatharians, scleractinians, and gorgonians has been assembled for the NE Atlantic to determine what their distribution and diversity was before coral habitats became heavily impacted by bottom fishing gear. Benthic sampling expeditions from 1868–1985 have provided 2547 records showing the deepwater distribution of 22 species of antipatharians, 68 species of scleractinians, and 83 species of gorgonians with the majority of records found from seamounts, oceanic islands, and the continental slope of the warm temperate region. Too little is known about the coral biota of boreal and tropical seamounts to assess their levels of …


Physicians And Torture: Lessons From The Nazi Doctors, Michael Grodin, George J. Annas Jan 2007

Physicians And Torture: Lessons From The Nazi Doctors, Michael Grodin, George J. Annas

Faculty Scholarship

How is it possible? What are the personal, professional and political contexts that allow physicians to use their skills to torture and kill rather than heal? What are the psychological characteristics and the social, cultural and political factors that predispose physicians to participate in human rights abuses? What can be done to recognize at-risk situations and attempt to provide corrective or preventive strategies? This article examines case studies from Nazi Germany in an attempt to answer these questions. Subjects discussed include the psychology of the individual perpetrator, dehumanization, numbing, splitting, omnipotence, medicalization, group dynamics, obedience to authority, diffusion of responsibility, …


Alternatives To Prescriptive Regulation Of Workplace Health And Safety, Michael S. Baram Jan 2007

Alternatives To Prescriptive Regulation Of Workplace Health And Safety, Michael S. Baram

Faculty Scholarship

Many promises to advance occupational safety and health have been made by developed nations. Expressed in the “hard law” of legislation are promises to regulate employers and workplaces, and to hold employers accountable when they do not comply. However, problems arise when regulators try to transform the promises into performance.


Relations Between Personality And Coping: A Meta-Analysis, Jennifer K. Connor-Smith, Celeste Flachsbart Jan 2007

Relations Between Personality And Coping: A Meta-Analysis, Jennifer K. Connor-Smith, Celeste Flachsbart

Faculty Publications - Doctor of Psychology (PsyD) Program

Personality may directly facilitate or constrain coping, but relations of personality to coping have been inconsistent across studies, suggesting a need for greater attention to methods and samples. This meta-analysis tested moderators of relations between Big Five personality traits and coping using 2,653 effect sizes drawn from 165 samples and 33,094 participants. Personality was weakly related to broad coping (e.g., Engagement or Disengagement), but all 5 traits predicted specific strategies. Extraversion and Conscientiousness predicted more problem-solving and cognitive restructuring, Neuroticism less. Neuroticism predicted problematic strategies like wishful thinking, withdrawal, and emotion-focused coping but, like Extraversion, also predicted support seeking. Personality …


World Religions And The Vegetarian Diet, Jo Ann Davidson Jan 2007

World Religions And The Vegetarian Diet, Jo Ann Davidson

Perspective Digest

No abstract provided.


Origins And Mariner 10 (Faith & Science Update), John T. Baldwin Jan 2007

Origins And Mariner 10 (Faith & Science Update), John T. Baldwin

Perspective Digest

No abstract provided.


Neo Romance: Gender Renegotiation In Harlequin Romance Novels, Amanda L. Breeden Jan 2007

Neo Romance: Gender Renegotiation In Harlequin Romance Novels, Amanda L. Breeden

Dissertations and Theses @ UNI

Mass-market romance novels remain top sellers among popular fiction and paperback in the American market; however, academic scholarship examining the popular romance novel is dated. The purpose of this thesis is to examine the gender roles of the heroine and hero characters within the novels. This thesis is a content analysis that examines seventy-two Harlequin romance novels, publication dates 1971-2006. The findings in this thesis suggest that the gender roles of the heroine and hero deviate drastically from those analyzed in the 1980's and 1990's, specifically regarding sexuality and gender performance. Neo Romance emerges, characterized by a sexually aggressive, autonomous …


A Study Of The Interaction Between The Basigin Transmembrane Domain And Monocarboxylate Transporter 1, Nicole A. Finch Jan 2007

A Study Of The Interaction Between The Basigin Transmembrane Domain And Monocarboxylate Transporter 1, Nicole A. Finch

UNF Graduate Theses and Dissertations

It is thought that a lactate shuttle complex of Basigin gene products and Monocarboxylate transporter 1 (MCT1) is necessary for photoreceptor cell maturation and function. The purpose of this study was to investigate the assembly of the lactate shuttle by determining which amino acids within Basigin interact with MCT1. It has been hypothesized that these two membrane proteins interact via the transmembrane domain of Basigin. Therefore, a full-length histidine-tagged peptide of the transmembrane domain (24 amino acids), as well as histidine-tagged deletion mutants were generated using the pET1 02/0 vector (Invitrogen) to test for binding to MCT1 via enzyme-linked immunosorbent …


Juvenile Hormone And Reproductive Tactics In Romalea Microptera, The Eastern Lubber Grasshopper, Raime Blair Fronstin Jan 2007

Juvenile Hormone And Reproductive Tactics In Romalea Microptera, The Eastern Lubber Grasshopper, Raime Blair Fronstin

UNF Graduate Theses and Dissertations

Isolated populations that inhabit various geographic and climatic ranges tend to diverge in their life history tactics. When development time is constrained by unfavorable seasons, often an organism must trade-off the investment of resource allocation between somatic and reproductive growth. The variation in reproductive tactics and juvenile hormone titers were studied among three populations of Romalea microptera from Athens, GA, Jacksonville, FL, and Miami, FL, all of which exist on a latitudinal cline. The Athens population was significantly younger at oviposition and gained significantly less body mass than both the Jacksonville and Miami populations, which did not differ from each …


Factors That Affect Distribution Of Two Species Of Killifish In Northeast Florida Marshes, Stacy N. Galleher Jan 2007

Factors That Affect Distribution Of Two Species Of Killifish In Northeast Florida Marshes, Stacy N. Galleher

UNF Graduate Theses and Dissertations

Fundulus heteroclitus and the closely related F. grondis are mainly distributed along the Atlantic coast of the U.S from Maine to Northeast Florida and from the East coast of Florida throughout the Gulf of Mexico, respectively. Both are resident salt marsh fishes whose range is thought to overlap in Northeast Florida, making them an ideal study system to examine resource partitioning between two closely related species. The objective of this study was to examine the effects of temperature and elevation on potential habitat partitioning of these two species. It is hypothesized that the northern species, F. heteroclitus, would have a …


Perceptions Of Parental Rejection, Peer Rejection, And Peer Victimization In Relation To Self-Reported Depression, Clayton Joseph Egli Jan 2007

Perceptions Of Parental Rejection, Peer Rejection, And Peer Victimization In Relation To Self-Reported Depression, Clayton Joseph Egli

Dissertations and Theses @ UNI

The present study compared perceptions of parental rejection, peer rejection, peer victimization, and depression in a sample of children from the Midwest. Self-report measures were completed by 71 participants (ages 7-12) in their regular classroom setting. Correlational analyses were conducted and found significant positive relationships between the identified constructs. Maternal rejection, paternal rejection, relational victimization, overt victimization, and peer rejection were found to correlate with depression for girls. Boys had significant correlations for maternal rejection, paternal rejection, and relational victimization with depression. Overt victimization did not significantly correlate with depression for boys. The peer rejection measure showed insufficient reliability for …


An Analysis Of Intuitive Eating Among College Students, Danielle Marie Vsetecka Jan 2007

An Analysis Of Intuitive Eating Among College Students, Danielle Marie Vsetecka

Dissertations and Theses @ UNI

In response to the world's increasing obesity rates, the use of traditional dieting and weight loss techniques is at an all time high. Although dieting rates have rapidly increased, the world's rising obesity rates show no sign of slowing and the effectiveness and effects of dieting have long been questioned. As an alternative to dieting and exercise, a non-dieting approach to weight regulation has emerged. Intuitive eating is one of its main tenants and is defined by allowing individuals to listen to internal body cues to determine hunger and fullness levels to meet nutritional and physical needs. However, few studies …


Evolutionary Stability Of The Polish Energy Market - Pke Vs. Bot, Łukasz Dąbek, Robert A Rządca Jan 2007

Evolutionary Stability Of The Polish Energy Market - Pke Vs. Bot, Łukasz Dąbek, Robert A Rządca

European Management Studies

An attempt has been made in this article at answering the question of stability of the Polish power industry sector. To analyze the stability of the sector, the authors apply the model developed by John Maynard Smith and George R. Price in 1973. Originally, the model, based on the Theory of Games, was applied in the evolutionary biology to study evolution (stability) of the populations of biological species. Adopting this model to the management science enables an innovative approach to the problem of market equilibrium. Having adjusted the model to the economic realities, the authors attempted at evaluating the orientation …


Mental Health Services In Schools: School Psychologists' Current Practices And Perspectives, Nicole Carlson Jan 2007

Mental Health Services In Schools: School Psychologists' Current Practices And Perspectives, Nicole Carlson

Dissertations and Theses @ UNI

It is estimated that approximately 7 .5 to 9 million children and adolescents are in need of mental health services, but that only 20% of these youths actually receive the services they need (National Association of School Psychologists [NASP], 2002). Because of this, schools across the nation have begun to take preventative measures, specifically school-based mental health services. School psychologists are uniquely prepared to provide these services, but little attention has been paid to their needs and concerns regarding such services. Therefore, members of NASP were given a survey to assess current practices and perspectives regarding mental health services in …


(Un)Gendered Sentiments: The Relationship Between Modernism And Gender In The Works Of Barnfield And Woolf, Brittany Kay Jungck Jan 2007

(Un)Gendered Sentiments: The Relationship Between Modernism And Gender In The Works Of Barnfield And Woolf, Brittany Kay Jungck

Dissertations and Theses @ UNI

By examining the history of literature through the lens of a gender critic, a person is able to discern how society and history frame our understanding of certain concepts. In this study, I have examined the lives and works of Richard Barnfield, a famed poet from the English Renaissance, and Virginia Woolf, a noted twentieth-century British novelist. The analysis of various aspects of Barnfield's and Woolf's creations reveals a connection between gendered language and modernity.