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Pages
- Title
- Spatial analysis and functional gene clustering between lens epithelium and fiber cells.
- Creator
- Cowell, Tracy L., Florida Atlantic University, Kantorow, Marc
- Abstract/Description
-
Purpose. To identify genes important for maintaining the specialized functions of lens epithelial and fiber cells. Methods. The expression profiles of 22,215 genes between human lens epithelial and fiber cells were analyzed using oligonucleotide microarray hybridization and RT-PCR. Selected genes were functionally clustered using the EASE bioinformatics software package. Results. Analysis of microarray hybridizations revealed 1430 transcripts that were significantly increased and 901...
Show morePurpose. To identify genes important for maintaining the specialized functions of lens epithelial and fiber cells. Methods. The expression profiles of 22,215 genes between human lens epithelial and fiber cells were analyzed using oligonucleotide microarray hybridization and RT-PCR. Selected genes were functionally clustered using the EASE bioinformatics software package. Results. Analysis of microarray hybridizations revealed 1430 transcripts that were significantly increased and 901 transcripts that were significantly decreased. Microarray data was confirmed using RT-PCR on 11 randomly selected genes. Functional clustering of the identified gene expression patterns revealed altered gene expression in cellular pathways including oxidative stress, cell proliferation, and apoptosis. The methionine sulfoxide reductase class of enzymes were further analyzed and demonstrated to be expressed throughout the human body, indicating a significant protective role. Conclusions. These data reveal novel and previously identified gene expression differences that provide insight into those mechanisms that may be important for lens cell differentiation.
Show less - Date Issued
- 2004
- PURL
- http://purl.flvc.org/fcla/dt/13193
- Subject Headings
- Gene mapping--Statistical methods, Eye--Physiology, Epithelium--Culture and culture media, Cell culture--Analysis
- Format
- Document (PDF)
- Title
- SPATIAL ANALYSIS OF NORTH ATLANTIC STORM TRAJECTORIES.
- Creator
- Lazar, Austin J., Li, Yang, Florida Atlantic University, Department of Mathematical Sciences, Charles E. Schmidt College of Science
- Abstract/Description
-
Storms in the North Atlantic Ocean are observed on a continual basis yearly. Storm trajectories exhibit random behavior and are costly to society. Data from the National Oceanic and Atmospheric Administration (NOAA) contains every storm’s track from the year 1851 to 2022. Data of each storm’s track can aid in decision making regarding their behavior. In this article, data analysis is performed on historical storm tracks during the years 1966 to 2022, where access to satellite information is...
Show moreStorms in the North Atlantic Ocean are observed on a continual basis yearly. Storm trajectories exhibit random behavior and are costly to society. Data from the National Oceanic and Atmospheric Administration (NOAA) contains every storm’s track from the year 1851 to 2022. Data of each storm’s track can aid in decision making regarding their behavior. In this article, data analysis is performed on historical storm tracks during the years 1966 to 2022, where access to satellite information is available. Analysis on this data will be used to determine if the storms’ trajectory is statistically dependent on other storm’s trajectories at varying distances in space. The proposed model is a spatial statistical model that is fitted on an in-sample data set to determine the spatial relationship for storm trajectories at all pairwise directions or orientations. Afterwards, the model is assessed on an out-of-sample test data set for performance evaluation.
Show less - Date Issued
- 2023
- PURL
- http://purl.flvc.org/fau/fd/FA00014227
- Subject Headings
- Spatial analysis (Statistics), Storms, North Atlantic Ocean
- Format
- Document (PDF)
- Title
- Spatial and temporal changes in the partitioning of organic carbon in the plankton community of the Sargasso Sea off Bermuda.
- Creator
- Roman, M. R., Caron, D. A., Kremer, P., Lessard, E. J., Madin, L. P., Malone, Tom C., Napp, J. M., Peele, E. R., Youngbluth, Marsh J.
- Date Issued
- 1995
- PURL
- http://purl.flvc.org/FCLA/DT/3331905
- Subject Headings
- Plankton, Plankton--Vertical distribution, Carbon, Sargasso Sea
- Format
- Document (PDF)
- Title
- Spatial and temporal distributions of sea turtles within the Florida current and surrounding waters.
- Creator
- Bovery, Caitlin M., Wyneken, Jeanette, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Assessing the spatial and temporal distributions of marine turtles in an open system poses both observational and analytical challenges due to their migratory nature and use of large current systems. Concentrations of animals can shift because turtles undergo large-scale migrations and habitat shifts seasonally as well as a function of lifestage. Surface counts of marine turtles in waters off Florida’s east coast were made in and adjacent to the Florida Current using standard aerial surveys....
Show moreAssessing the spatial and temporal distributions of marine turtles in an open system poses both observational and analytical challenges due to their migratory nature and use of large current systems. Concentrations of animals can shift because turtles undergo large-scale migrations and habitat shifts seasonally as well as a function of lifestage. Surface counts of marine turtles in waters off Florida’s east coast were made in and adjacent to the Florida Current using standard aerial surveys. While it is understood that marine turtles use waters off the eastern coast of Florida, here we document the magnitude of the shift in turtle presence each season throughout a two year study and identify habitat characteristics where turtles occur most frequently. Our assessment of marine turtles in the waters off southeast Florida provide valuable metrics describing the in-water biology of sea turtles in this area to inform future management strategies of these endangered species.
Show less - Date Issued
- 2014
- PURL
- http://purl.flvc.org/fau/fd/FA00004083, http://purl.flvc.org/fau/fd/FA00004083
- Subject Headings
- Sea turtles -- Atlantic Coast (U.S.) -- Florida -- Distribution, Sea turtles -- Atlantic Coast (U.S.) -- Florida -- Geographical distribution
- Format
- Document (PDF)
- Title
- Spatial and temporal distributions of sea turtles within the Florida Current and surrounding waters and their implications for oceanic energy development.
- Creator
- Bovery, Caitlin M., Wyneken, Jeanette, Graduate College
- Date Issued
- 2013-04-12
- PURL
- http://purl.flvc.org/fcla/dt/3361275
- Subject Headings
- Sea turtles, Florida Current, Sea turtles--Conservation
- Format
- Document (PDF)
- Title
- Spatial and Temporal Mapping of the Evolution of the Miami-Fort Lauderdale-West Palm Beach Metropolitan Statistical Area (MSA).
- Creator
- Rochelo, Mark, Roberts, Charles, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
Urbanization is a fundamental reality in the developed and developing countries around the world creating large concentrations of the population centering on cities and urban centers. Cities can offer many opportunities for those residing there, including infrastructure, health services, rescue services and more. The living space density of cities allows for the opportunity of more effective and environmentally friendly housing, transportation and resources. Cities play a vital role in...
Show moreUrbanization is a fundamental reality in the developed and developing countries around the world creating large concentrations of the population centering on cities and urban centers. Cities can offer many opportunities for those residing there, including infrastructure, health services, rescue services and more. The living space density of cities allows for the opportunity of more effective and environmentally friendly housing, transportation and resources. Cities play a vital role in generating economic production as entities by themselves and as a part of larger urban complex. The benefits can provide for extraordinary amount of people, but only if proper planning and consideration is undertaken. Global urbanization is a progressive evolution, unique in spatial location while consistent to an overall growth pattern and trend. Remotely sensing these patterns from the last forty years of space borne satellites to understand how urbanization has developed is important to understanding past growth as well as planning for the future. Imagery from the Landsat sensor program provides the temporal component, it was the first satellite launched in 1972, providing appropriate spatial resolution needed to cover a large metropolitan statistical area to monitor urban growth and change on a large scale. This research maps the urban spatial and population growth over the Miami – Fort Lauderdale – West Palm Beach Metropolitan Statistical Area (MSA) covering Miami- Dade, Broward, and Palm Beach counties in Southeast Florida from 1974 to 2010 using Landsat imagery. Supervised Maximum Likelihood classification was performed with a combination of spectral and textural training fields employed in ERDAS Image 2014 to classify the images into urban and non-urban areas. Dasymetric mapping of the classification results were combined with census tract data then created a coherent depiction of the Miami – Fort Lauderdale – West Palm Beach MSA. Static maps and animated files were created from the final datasets for enhanced visualizations and understanding of the MSA evolution from 60-meter resolution remotely sensed Landsat images. The simplified methodology will create a database for urban planning and population growth as well as future work in this area.
Show less - Date Issued
- 2017
- PURL
- http://purl.flvc.org/fau/fd/FA00004904, http://purl.flvc.org/fau/fd/FA00004904
- Subject Headings
- Geographic information systems., Sustainable urban development--Florida--Miami--Planning., Sustainable urban development--Florida--Fort Lauderdale--Planning., Sustainable urban development--Florida--West Palm Beach--Planning., Urbanization--Florida--Miami-Dade County., Urbanization--Florida--Broward County., Urbanization--Florida--Palm Beach County., Remote sensing., Spatial analysis (Statistics)
- Format
- Document (PDF)
- Title
- Spatial and trophic ecology of the sawtooth eel, Serrivomer beanii, a biomass-dominant bathypelagic fish over the northern Mid-Atlantic ridge.
- Creator
- Geidner, Megan E., Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
The role of Serrivomer beanii in bathypelagic food webs is poorly known, but abundance and biomass estimates from the 2004 G.O. Sars MAR-ECO Expedition suggest it to have a high level of importance. MAR-ECO, a Census of Marine Life field project, has allowed us to increase our knowledge of S. beanii through spatial analysis, including the congeneric species Serrivomer lanceolatoides, and trophic analysis. Serrivomer beanii abundance and biomass exhibited a decreasing trend along the northern...
Show moreThe role of Serrivomer beanii in bathypelagic food webs is poorly known, but abundance and biomass estimates from the 2004 G.O. Sars MAR-ECO Expedition suggest it to have a high level of importance. MAR-ECO, a Census of Marine Life field project, has allowed us to increase our knowledge of S. beanii through spatial analysis, including the congeneric species Serrivomer lanceolatoides, and trophic analysis. Serrivomer beanii abundance and biomass exhibited a decreasing trend along the northern Mid-Atlantic Ridge from north to south. In terms of size, S. beanii was found to increase as distance from the ridge decreased, suggesting a topographic aggregation strategy. The diet of S. beanii consisted of crustaceans, cephalopods, and teleosts. The trophic results of this study reveal a likely "alternative" trophic pathway in the deep mid-North Atlantic, and perhaps other, bathypelagic ecosystems: higher trophic-level predators are supported by micronektonic invertebrates as primary prey.
Show less - Date Issued
- 2008
- PURL
- http://purl.flvc.org/FAU/165941
- Subject Headings
- Plankton, Ecology, Coral reef animals, Ecology, Deep sea biology
- Format
- Document (PDF)
- Title
- Spatial coherence methods in undersea image formation and detection.
- Creator
- Caimi, F. M., Bailey, B. C., Blatt, J. H., Harbor Branch Oceanographic Institute
- Date Issued
- 1996
- PURL
- http://purl.flvc.org/FCLA/DT/3183697
- Subject Headings
- Underwater imaging systems, Image Quality
- Format
- Document (PDF)
- Title
- SPATIAL ECOLOGY OF BOBCATS (LYNX RUFUS) ON EVERGLADES TREE ISLANDS.
- Creator
- Buckman, Katherine, Dom, Nathan, Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
- Abstract/Description
-
Bobcats (Lynx rufos) that inhabit tree islands of the Everglades, an expansive wetland in southern Florida. Bobcats are understudied in Florida and wetland ecosystems, and my objective was to identify factors driving their use of tree islands. I hypothesized that tree island size, distance between islands, and clusters of islands might influence occupancy. Additionally, I tested for effects of water levels and the Burmese Python invasion on bobcat occupancy. I built detection histories using...
Show moreBobcats (Lynx rufos) that inhabit tree islands of the Everglades, an expansive wetland in southern Florida. Bobcats are understudied in Florida and wetland ecosystems, and my objective was to identify factors driving their use of tree islands. I hypothesized that tree island size, distance between islands, and clusters of islands might influence occupancy. Additionally, I tested for effects of water levels and the Burmese Python invasion on bobcat occupancy. I built detection histories using 1,855 bobcat images from camera traps set on 87 tree islands in a -2,350 km2 managed conservation area from 2005-2019 and tested hypotheses about bobcat use relative to habitat and hydrologic covariates. Bobcat occupancy was significantly diminished when Burmese python densities exceeded 2.5 pythons/km2• Occupancy probability also increased with increasing densities of tree islands around the focal island. Effects of high water levels were less clear, but suggested a slight reduction in island occupancy with deeper water in the surrounding wetlands. My results suggest that managing for high tree island density and low densities of Burmese pythons will have stronger effects on bobcat habitat use than specific water levels.
Show less - Date Issued
- 2021
- PURL
- http://purl.flvc.org/fau/fd/FA00013846
- Subject Headings
- Lynx rufus, Bobcat, Spatial ecology, Everglades (Fla.)
- Format
- Document (PDF)
- Title
- THE SPATIAL FRAMEWORK OF FORM PERCEPTION: INDIVIDUAL DIFFERENCES WITH RESPECT TO PHENOMENAL AND RETINAL DETERMINATION OF SPATIAL REFERENCE.
- Creator
- GOLD, LEON SAMUEL, Florida Atlantic University
- Abstract/Description
-
Rock's procedure for separating the effect of objective and retinal spatial reference by varying stimulus orientation and body posture was used in conjunction with the "same-different" reaction time paradigm. It was predicted that the individual differences in perceptual processing (analytic and structural) obtained by Hock (1973) would involve different determinants of spatial reference, these being retinal reference for analytic processing and objective reference for structural processing....
Show moreRock's procedure for separating the effect of objective and retinal spatial reference by varying stimulus orientation and body posture was used in conjunction with the "same-different" reaction time paradigm. It was predicted that the individual differences in perceptual processing (analytic and structural) obtained by Hock (1973) would involve different determinants of spatial reference, these being retinal reference for analytic processing and objective reference for structural processing. The results show that analytic subjects as hypothesized, referenced perceptual information to a retinal coordinate system. Structural subjects however, seemed to reference perceptual information to both objective and retinal coordinates. The results for structural subjects were attributed to the unexpected finding that subjects who were structural while upright, became analytic when in a reclining position. The latter finding suggested that Rock's methodology for separating the effects of retinal and objective orientation relies on the subjects employing the same mode of processing in all bodily postures.
Show less - Date Issued
- 1974
- PURL
- http://purl.flvc.org/fcla/dt/13649
- Subject Headings
- Form perception, Orientation (Psychology), Recognition (Psychology), Visual perception
- Format
- Document (PDF)
- Title
- SPATIAL NETWORK BIG DATA APPROACHES TO EMERGENCY MANAGEMENT INFORMATION SYSTEMS.
- Creator
- Herschelman, Roxana M., Yang, KwangSoo, Florida Atlantic University, Department of Computer and Electrical Engineering and Computer Science, College of Engineering and Computer Science
- Abstract/Description
-
Emergency Management Information Systems (EMIS) are defined as a set of tools that aid decision-makers in risk assessment and response for significant multi-hazard threats and disasters. Over the past three decades, EMIS have grown in importance as a major component for understanding, managing, and governing transportation-related systems. To increase resilience against potential threats, the main goal of EMIS is to timely utilize spatial and network datasets about (1) locations of hazard...
Show moreEmergency Management Information Systems (EMIS) are defined as a set of tools that aid decision-makers in risk assessment and response for significant multi-hazard threats and disasters. Over the past three decades, EMIS have grown in importance as a major component for understanding, managing, and governing transportation-related systems. To increase resilience against potential threats, the main goal of EMIS is to timely utilize spatial and network datasets about (1) locations of hazard areas (2) shelters and resources, (3) and how to respond to emergencies. The main concern about these datasets has always been the very large size, variety, and update rate required to ensure the timely delivery of useful emergency information and response for disastrous events. Another key issue is that the information should be concise and easy to understand, but at the same time very descriptive and useful in the case of emergency or disaster. Advancement in EMIS is urgently needed to develop fundamental data processing components for advanced spatial network queries that clearly and succinctly deliver critical information in emergencies. To address these challenges, we investigate Spatial Network Database Systems and study three challenging Transportation Resilience problems: producing large scale evacuation plans, identifying major traffic patterns during emergency evacuations, and identifying the highest areas in need of resources.
Show less - Date Issued
- 2020
- PURL
- http://purl.flvc.org/fau/fd/FA00013576
- Subject Headings
- Emergency management, Big data, Emergency management--Information technology
- Format
- Document (PDF)
- Title
- SPATIAL NETWORK BIG DATABASE APPROACH TO RESOURCE ALLOCATION PROBLEMS.
- Creator
- Qutbuddin, Ahmad, Yang, KwangSoo, Florida Atlantic University, Department of Computer and Electrical Engineering and Computer Science, College of Engineering and Computer Science
- Abstract/Description
-
Resource allocation for Spatial Network Big Database is challenging due to the large size of spatial networks, variety of types of spatial data, a fast update rate of spatial and temporal elements. It is challenging to learn, manage and process the collected data and produce meaningful information in a limited time. Produced information must be concise and easy to understand. At the same time, the information must be very descriptive and useful. My research aims to address these challenges...
Show moreResource allocation for Spatial Network Big Database is challenging due to the large size of spatial networks, variety of types of spatial data, a fast update rate of spatial and temporal elements. It is challenging to learn, manage and process the collected data and produce meaningful information in a limited time. Produced information must be concise and easy to understand. At the same time, the information must be very descriptive and useful. My research aims to address these challenges through the development of fundamental data processing components for advanced spatial network queries that clearly and briefly deliver critical information. This thesis proposal studied two challenging Spatial Network Big Database problems: (1) Multiple Resource Network Voronoi Diagram and (2) Node-attributed Spatial Graph Partitioning. To address the challenge of query processing for multiple resource allocation in preparing for or after a disaster, we investigated the problem of the Multiple Resource Network Voronoi Diagram (MRNVD). Given a spatial network and a set of service centers from k different resource types, a Multiple Resource Network Voronoi Diagram (MRNVD) partitions the spatial network into a set of Service Areas that can minimize the total cycle-distances of graph-nodes to allotted k service centers with different resource types. The MRNVD problem is important for critical societal applications such as assigning essential survival supplies (e.g., food, water, gas, and medical assistance) to residents impacted by man-made or natural disasters. The MRNVD problem is NP-hard; it is computationally challenging due to the large size of the transportation network. Previous work proposed the Distance bounded Pruning (DP) approach to produce an optimal solution for MRNVD. However, we found that DP can be generalized to reduce the computational cost for the minimum cycle-distance. We extend our prior work and propose a novel approach that reduces the computational cost. Experiments using real-world datasets from five different regions demonstrate that the proposed approach creates MRNVD and significantly reduces the computational cost.
Show less - Date Issued
- 2021
- PURL
- http://purl.flvc.org/fau/fd/FA00013854
- Subject Headings
- Spatial data infrastructures, Big data--Data processing, Resource allocation, Voronoi polygons
- Format
- Document (PDF)
- Title
- Spatial patterns of interracial marriage in the South Atlantic United States.
- Creator
- Kokoros, Sophia., Florida Atlantic University, Lee, David R.
- Abstract/Description
-
Using Census data, regression analyses were performed at the state level for the South Atlantic region of the U.S. and at the Public Use Microdata Area (PUMA) level for the state of Florida to evaluate possible relationships between the dependent variable, the percentage married households interracial, and several independent variables. Only two of the independent variables examined at the state level were statistically significant: the percent black and the percentage of the population that...
Show moreUsing Census data, regression analyses were performed at the state level for the South Atlantic region of the U.S. and at the Public Use Microdata Area (PUMA) level for the state of Florida to evaluate possible relationships between the dependent variable, the percentage married households interracial, and several independent variables. Only two of the independent variables examined at the state level were statistically significant: the percent black and the percentage of the population that reside in metropolitan areas. No significant relationships could be found at the PUMA level of analysis. Spatial patterns of interracial marriage were evaluated as well. The northernmost states and Florida had the highest percentage of married households interracial. West Virginia and the Carolinas had the lowest rate of intermarriage. PUMAs containing military bases, major universities or those to the South, influenced by migrations from Latin America and the Caribbean, had the greatest percentage of married households interracial.
Show less - Date Issued
- 1999
- PURL
- http://purl.flvc.org/fcla/dt/15694
- Subject Headings
- Interracial marriages--United States.
- Format
- Document (PDF)
- Title
- SPATIAL PROXIMITY, OBJECT FORMATION, AND SELECTIVE ATTENTION.
- Creator
- LALOMIA, MARY JEAN, Florida Atlantic University
- Abstract/Description
-
In these studies subjects judged the curvature direction of one of a pair of parentheses. In one condition the pair of parentheses formed a single object and in a second condition the parentheses formed two objects. The one- and two-object conditions were used to examine the contrasting positions of mental spotlight and object-based theories of attention. Mental spotlight theory holds that attention is allocated to regions in visual space, whereas object-based theory states that attention is...
Show moreIn these studies subjects judged the curvature direction of one of a pair of parentheses. In one condition the pair of parentheses formed a single object and in a second condition the parentheses formed two objects. The one- and two-object conditions were used to examine the contrasting positions of mental spotlight and object-based theories of attention. Mental spotlight theory holds that attention is allocated to regions in visual space, whereas object-based theory states that attention is allocated to objects in visual space. To evaluate the positions of these theories, the retinal proximity between the parentheses was varied. Mental spotlight theory predicts that performance differences, due to the changes of retinal proximity, should be the same regardless of whether the stimuli form one or two objects. Object-based theory predicts that retinal proximity facilitates performance for the one-object condition and retards performance for the two-object condition. The results indicated that retinal proximity facilitated performance for the one-object parentheses but retarded performance for the two-object parentheses. These results support the view that attention is allocated to objects rather than regions in visual space.
Show less - Date Issued
- 1985
- PURL
- http://purl.flvc.org/fcla/dt/14249
- Subject Headings
- Attention--Testing, Attention--Experiments
- Format
- Document (PDF)
- Title
- SPATIAL TRANSFORMATIONS AND SELF-INITIATED ACTIVE MOVEMENT: A DEVELOPMENTAL STUDY.
- Creator
- SULLIVAN, MARJORIE ANN., Florida Atlantic University
- Abstract/Description
-
A spatial transformation task was administered to two groups of children under one of three conditions: active subject-movement, passive subject-movement and stimulus array-rotation. In the younger group (5-7 years) subjects did significantly better in the active subject-movement than in the array-rotation condition. The active-passive distinction was not significant. Performance improved significantly with age. While there were no statistically significant differences between conditions in...
Show moreA spatial transformation task was administered to two groups of children under one of three conditions: active subject-movement, passive subject-movement and stimulus array-rotation. In the younger group (5-7 years) subjects did significantly better in the active subject-movement than in the array-rotation condition. The active-passive distinction was not significant. Performance improved significantly with age. While there were no statistically significant differences between conditions in the older group (8-9 years), a trend toward reversal in level of difficulty between the array-rotation and subject-move conditions was noted. These findings were related to possible differences between young, pre-operational children who depend on topological cues and a stable relationship between the stimulus and the external background context and older, concrete operational children for whom spatial concepts are internalized such that actual movement might compete with imagined movement. Significant sex differences, favoring boys, emerged in the older group.
Show less - Date Issued
- 1977
- PURL
- http://purl.flvc.org/fcla/dt/13897
- Subject Headings
- Space perception in children
- Format
- Document (PDF)
- Title
- SPATIAL VARIATIONS IN MORTGAGE LENDING IN BROWARD COUNTY, FLORIDA.
- Creator
- PHILLIPS, JULIE A., Florida Atlantic University, Schultz, Ronald R., Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
An analysis of five loan types from twenty-six lending institutions in 125 census tracts of Broward County revealed that lending was concentrated in coastal and western tracts, less in central tracts. Western tract loan activity was greater than average because this area is undergoing conversion from agricultural to urban land uses. Coastal tracts had greater than average rates because of continued expansion of condominium development. Central tracts are mainly commercial, industrial or lower...
Show moreAn analysis of five loan types from twenty-six lending institutions in 125 census tracts of Broward County revealed that lending was concentrated in coastal and western tracts, less in central tracts. Western tract loan activity was greater than average because this area is undergoing conversion from agricultural to urban land uses. Coastal tracts had greater than average rates because of continued expansion of condominium development. Central tracts are mainly commercial, industrial or lower value single-family dwellings and have large black populations. High positive correlations were found among lending rates and income; moderate positive correlations with age and household size; moderate negative with percent black. Geographic discrimination in lending ("redlining") may be suspected, but insufficient quality and quantity of data render such conclusions tentative.
Show less - Date Issued
- 1983
- PURL
- http://purl.flvc.org/fcla/dt/14156
- Subject Headings
- Mortgage loans--Florida--Broward County
- Format
- Document (PDF)
- Title
- Spatial, temporal, and dietary overlap of leatherback sea turtles (Dermochelys coriacea) and ocean sunfishes (family Molidae).
- Creator
- Desjardin, Nicole A., Florida Atlantic University, Wyneken, Jeanette
- Abstract/Description
-
Investigation of the spatio-temporal movements of leatherback sea turtles (Dermochelys coriacea) and ocean sunfishes (family Molidae), as well as analyses of their prey, support the hypothesis that they may occupy similar ecological niches. This study examined the spatial and temporal occurrences of sunfishes (Mola mola and Masturus lanceolatus) and leatherbacks in the western Atlantic Ocean and assessed dietary overlap. Analyses of leatherback and sunfish distributions, estimated from aerial...
Show moreInvestigation of the spatio-temporal movements of leatherback sea turtles (Dermochelys coriacea) and ocean sunfishes (family Molidae), as well as analyses of their prey, support the hypothesis that they may occupy similar ecological niches. This study examined the spatial and temporal occurrences of sunfishes (Mola mola and Masturus lanceolatus) and leatherbacks in the western Atlantic Ocean and assessed dietary overlap. Analyses of leatherback and sunfish distributions, estimated from aerial surveys, showed greater spatial and temporal overlap along the Northeast coast of North America than in the Gulf of Mexico. Both species co-occur more often during warmer months. Pelagic longline fisheries bycatch data and aerial survey data revealed slightly different trends in spatio-temporal distributions. Nematocysts found within gastrointestinal tract contents of stranded animals indicate that they may feed on similar prey, including cnidarians in the classes Scyphozoa, Hydrozoa, and Cubozoa.
Show less - Date Issued
- 2005
- PURL
- http://purl.flvc.org/fcla/dt/13225
- Subject Headings
- Freshwater fishes--Atlantic Coast (U S )--Geographical distribution, Sea turtles--Atlantic Coast (U S )--Geographical distribution, Animal behavior
- Format
- Document (PDF)
- Title
- Spatially variant and coherent illumination method for undersea object detection and recognition.
- Creator
- Caimi, F. M., Bailey, B. C., Blatt, J. H., Harbor Branch Oceanographic Institute
- Date Issued
- 1998
- PURL
- http://purl.flvc.org/FCLA/DT/3183708
- Subject Headings
- Underwater imaging systems, Underwater light
- Format
- Document (PDF)
- Title
- Spatio-temporal dynamics in the SEIRS epidemic model.
- Creator
- Mei, Lei, Florida Atlantic University, Wille, Luc T.
- Abstract/Description
-
The Susceptible-Exposed-Infected-Recovered-Susceptible (SEIRS) spatial epidemic model is governed by non-linear equations with several parameters related to birth and death, contact rate, disease latency, infectious period, and recycle rate. Both continuum results and lattice results show the existing of disease persistence and critical density. The upper limit of birth and death rate is observed, power spectrum with 1/f profile is discussed. Some other models, as limiting cases of the SEIRS...
Show moreThe Susceptible-Exposed-Infected-Recovered-Susceptible (SEIRS) spatial epidemic model is governed by non-linear equations with several parameters related to birth and death, contact rate, disease latency, infectious period, and recycle rate. Both continuum results and lattice results show the existing of disease persistence and critical density. The upper limit of birth and death rate is observed, power spectrum with 1/f profile is discussed. Some other models, as limiting cases of the SEIRS model, are also studied. Lower limit of birth and death rate for the models without recycle rate has also obtained. Finally two general rules governing epidemic models are summarized. Visualization is available on our web site http://www.cse.fau.edu/~lmei/simulation.html
Show less - Date Issued
- 1999
- PURL
- http://purl.flvc.org/fcla/dt/15633
- Subject Headings
- Epidemiology--Mathematical models, Demography, Epidemics--Computer simulation
- Format
- Document (PDF)
- Title
- Spatio-temporal modeling of seed dispersal and aquatic plant community restoration in the Kissimmee River floodplain.
- Creator
- Kennard, Stevee., Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
This study created an ecological spatial model, using a geographic information system, to visualize the influence of hydrochory on restoration of the three dominant wetland communities of broadleaf marsh, wetland shrub, and wet prairie across the floodplain of the Kissimmee River. Primary parameters incorporated into the model included floodplain hydrology, seed characteristics of buoyancy and dispersal rates, and species flood tolerance. S²rensen's similarity index, comparing spatial...
Show moreThis study created an ecological spatial model, using a geographic information system, to visualize the influence of hydrochory on restoration of the three dominant wetland communities of broadleaf marsh, wetland shrub, and wet prairie across the floodplain of the Kissimmee River. Primary parameters incorporated into the model included floodplain hydrology, seed characteristics of buoyancy and dispersal rates, and species flood tolerance. S²rensen's similarity index, comparing spatial agreement among model output and observed community data, resulted in values of BLM-BB = 0.10, BLM = 0.07, WS = 0.21, and WP = 0.36. The significant discrepancies between modeled and observed community spatial coverage indicated a need for incorporation of more stochastic variables of climatic disturbances, nutrient availability, and soil characteristics. More research on species flood tolerance across smaller spatial scales is also needed, and base data incorporated into the model should also be reliable and consistent if accuracy is to be achieved.
Show less - Date Issued
- 2013
- PURL
- http://purl.flvc.org/fcla/dt/3360797
- Subject Headings
- Seeds, Dispersal, Floodplain ecology, Wetland restoration, Restoration ecology
- Format
- Document (PDF)
