Current Search: Xie, Zhixiao (x)
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- Title
- A tidal inundation model of shallow-water availability (TiMSA).
- Creator
- Calle, Leonardo, Gawlik, Dale E., Xie, Zhixiao, Johnson, Brian, Graduate College
- Date Issued
- 2013-04-12
- PURL
- http://purl.flvc.org/fcla/dt/3361914
- Subject Headings
- Ecology, Wading birds, Florida Keys (Fla.)
- Format
- Document (PDF)
- Title
- AN EXPLORATION OF THE SOCIODEMOGRAPHIC AND SOCIOECONOMIC DICHOTOMY OF SHRINKING CITIES AND FORMERLY SHRINKING CITIES IN THE CONTEXT OF THE BACK-TO-THE-CITY MOVEMENT.
- Creator
- Kittredge, Danielle J., Xie, Zhixiao, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
- Abstract/Description
-
Within the U.S. in recent decades a renewed interest in downtown and city living has become known as the “back-to-the-city movement” and contributed to the stabilization and regrowth of cities that were previously losing population. This trend, however, is not occurring equally and many cities within the U.S. that have been losing population for decades are still continuing to lose population (“shrinking city”). This study seeks to understand what sociodemographic and socioeconomic...
Show moreWithin the U.S. in recent decades a renewed interest in downtown and city living has become known as the “back-to-the-city movement” and contributed to the stabilization and regrowth of cities that were previously losing population. This trend, however, is not occurring equally and many cities within the U.S. that have been losing population for decades are still continuing to lose population (“shrinking city”). This study seeks to understand what sociodemographic and socioeconomic characteristics are contributing the greatest to the back-to-the-city movement and develop a composite index that can be used to identify if similar trends are beginning to emerge in shrinking cities. Variables identified through various literature for their association with back-to-the-city movement were analyzed through a proportion composition analysis comparing changes in growing versus non-growing census tracts at the city-wide and downtown level of 86 cities within this study. The analysis was conducted for the time periods of 1970 to 2017 and 1990 to 2017. The results justified variables for inclusion in back-to-the-city movement composite index, however, the analysis found some trends differed at the city-wide versus downtown geographic levels resulting in three potential index combinations. The three indices were calculated on census tracts for the 86 cities within this study and the results were decomposed to assess performance of individual variables. The results conclude that areas within some shrinking cities are exhibiting back-to-the-city movement trends, however, additional recommendations are provided for refining the index and methodology.
Show less - Date Issued
- 2020
- PURL
- http://purl.flvc.org/fau/fd/FA00013618
- Subject Headings
- Urban planning, Cities, Downtowns
- Format
- Document (PDF)
- Title
- Generating space-time hypotheses in complex social-ecological systems.
- Creator
- Forbes, Dolores J., Xie, Zhixiao, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
As ecosystems degrade globally, ecosystem services that support life are increasingly threatened. Indications of degradation are occurring in the Northern Indian River Lagoon (IRL) estuary in east central Florida. Factors associated with ecosystem degradation are complex, including climate and land use change. Ecosystem research needs identified by the Millennium Ecosystem Assessment (MA) include the need to: consider the social with the physical; account for dynamism and change; account for...
Show moreAs ecosystems degrade globally, ecosystem services that support life are increasingly threatened. Indications of degradation are occurring in the Northern Indian River Lagoon (IRL) estuary in east central Florida. Factors associated with ecosystem degradation are complex, including climate and land use change. Ecosystem research needs identified by the Millennium Ecosystem Assessment (MA) include the need to: consider the social with the physical; account for dynamism and change; account for complexity; address issues of scale; and focus on ecosystem structure and process. Ecosystems are complex, self-organizing, multi-equilibrial, non-linear, middle-number systems that exist in multiple stable states. Results found are relative to the observation and the frame of analysis, requiring multi-scaled analytical techniques. This study addresses the identified ecosystem research needs and the complexity of the associated factors given these additional constraints. Relativity is addressed through univariate analysis of dissolved oxygen as a measure of the general health of the Northern IRL. Multiple spatial levels are employed to associate social process scales with physical process scales as basin, sub-basins, and watersheds. Scan statistics return extreme value clusters in space-time. Wavelet transforms decompose time-scales of cyclical data using varying window sizes to locate change in process scales in space over time. Wavelet transform comparative methods cluster temporal process scales across space. Combined these methods describe the space-time structure of process scales in a complex ecosystem relative to the variable examined, where the highly localized results allow for connection to unexamined variables.
Show less - Date Issued
- 2014
- PURL
- http://purl.flvc.org/fau/fd/FA00004284
- Subject Headings
- Environmental sciences -- Mathematical models, Indian River (Fla. : Lagoon) -- Environmental aspects, Marine ecosystem management -- Florida -- Indian River (Lagoon), Sustainable development, Wavelets (Mathematics)
- Format
- Document (PDF)
- Title
- High Resolution Population Distribution Estimates for Improved Decision Making, With a Case Study of Sea-Level Rise Vulnerability in Boca Raton, Florida.
- Creator
- Ziegler, Hannes Moritz, Xie, Zhixiao, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
Planners and managers often rely on coarse population distribution data from the census for addressing various social, economic, and environmental problems. In the analysis of physical vulnerabilities to sea-level rise, census units such as blocks or block groups are coarse relative to the required decision-making application. This study explores the benefits offered from integrating image classification and dasymetric mapping at the household level to provide detailed small area population...
Show morePlanners and managers often rely on coarse population distribution data from the census for addressing various social, economic, and environmental problems. In the analysis of physical vulnerabilities to sea-level rise, census units such as blocks or block groups are coarse relative to the required decision-making application. This study explores the benefits offered from integrating image classification and dasymetric mapping at the household level to provide detailed small area population estimates at the scale of residential buildings. In a case study of Boca Raton, FL, a sea-level rise inundation grid based on mapping methods by NOAA is overlaid on the highly detailed population distribution data to identify vulnerable residences and estimate population displacement. The enhanced spatial detail offered through this method has the potential to better guide targeted strategies for future development, mitigation, and adaptation efforts.
Show less - Date Issued
- 2016
- PURL
- http://purl.flvc.org/fau/fd/FA00004670
- Subject Headings
- City planning -- Remote sensing, Community development, Urban -- Florida -- Boca Raton, Geographic information systems, Population -- Geographic information systems -- Florida -- Boca Raton, egional planning -- Florida -- Boca Raton, Spatial analysis (Statistics), Urban geography -- Remote sensing
- Format
- Document (PDF)
- Title
- Examining Unique Domestic Migration Processes and Relationships between Miami-Dade, Broward and Palm Beach Counties.
- Creator
- Power, Eric M., Xie, Zhixiao, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
- Abstract/Description
-
The Metropolitan Statistical Area (MSA) known as Miami Fort Lauderdale Pompano Beach consistently gains migrants from both the United States and abroad. However, despite the constant increase in population, the domestic out-migration for Miami-Dade County has consistently been more than the domestic in-migration. Recently a similar trend is occurring in Broward and Palm Beach Counties. The continual gain in population despite the domestic out-migration is mostly due to the large international...
Show moreThe Metropolitan Statistical Area (MSA) known as Miami Fort Lauderdale Pompano Beach consistently gains migrants from both the United States and abroad. However, despite the constant increase in population, the domestic out-migration for Miami-Dade County has consistently been more than the domestic in-migration. Recently a similar trend is occurring in Broward and Palm Beach Counties. The continual gain in population despite the domestic out-migration is mostly due to the large international in-migration for the region. Using data from the Internal Revenue Service, this paper discusses the migration of domestic populations and determines if possible new trends exist for this MSA. Furthermore, income data collected from the IRS was used to establish any possible relationship between migration and income.
Show less - Date Issued
- 2008
- PURL
- http://purl.flvc.org/fau/fd/FA00000828
- Subject Headings
- Metropolitan areas, Human beings--Migrations, Income, Miami-Dade County (Fla.), Broward County (Fla.), Palm Beach County (Fla.)
- Format
- Document (PDF)
- Title
- Object Oriented Classification of Australian Pine (Casuarina equisetifolia), an Invasive Exotic Species in South Florida.
- Creator
- Johnson, Brian A., Xie, Zhixiao, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
Invasive exotic plant species cause a number of problems in native south Florida ecosystems, and a great deal of effort is being put into controlling the populations ofthese species. Control efforts require updated information on the locations of exotic species. This information can be obtained from high resolution remotely sensed data such as digital orthoimagery and LIDAR. Extraction of information from these data sources is often problematic using traditional pixel-based image processing...
Show moreInvasive exotic plant species cause a number of problems in native south Florida ecosystems, and a great deal of effort is being put into controlling the populations ofthese species. Control efforts require updated information on the locations of exotic species. This information can be obtained from high resolution remotely sensed data such as digital orthoimagery and LIDAR. Extraction of information from these data sources is often problematic using traditional pixel-based image processing techniques. An object oriented method of image analysis, however, has been shown to be better suited to this task. One invasive exotic species that has become widespread in south Florida is Casuarina equisetifolia, also known as Australian pine. This study develops a semiautomated procedure for detecting Australian pine over a large, diverse area with high resolution remotely sensed data using the object oriented method of analysis.
Show less - Date Issued
- 2007
- PURL
- http://purl.flvc.org/fau/fd/FA00000775
- Subject Headings
- Ecology--Remote sensing, Aerial photogrammetry
- Format
- Document (PDF)
- Title
- THE INFLUENCE OF THE SPACE SHUTTLE PROGRAM ON LAND USE/LANDCOVER AND POPULATION DYNAMICS IN BREVARD COUNTY.
- Creator
- Insalaco, Stephanie, Xie, Zhixiao, Florida Atlantic University, Department of Physics, Charles E. Schmidt College of Science
- Abstract/Description
-
The Space Shuttle Program at the John F. Kennedy Space Center (KSC) in Brevard County made a significant impact on the aerospace industry, but what is unknown is how it impacted the county surrounding it, specifically through land use/land cover (LU/LC) change and population dynamics. This research collected land cover and population data throughout the program to determine the impact, while also creating a record of the state of LU/LC and population in Brevard County in general during the...
Show moreThe Space Shuttle Program at the John F. Kennedy Space Center (KSC) in Brevard County made a significant impact on the aerospace industry, but what is unknown is how it impacted the county surrounding it, specifically through land use/land cover (LU/LC) change and population dynamics. This research collected land cover and population data throughout the program to determine the impact, while also creating a record of the state of LU/LC and population in Brevard County in general during the same period. Urbanization and tourism were also evaluated as possible catalysts for change when analyzing the LU/LC maps created in ArcMap and the population graphs from Microsoft Excel. Calculated area for different LU/LC classes were the main focus of this research, which led to the finding that urbanization has been a major factor of change in Brevard County through expanding residential areas rather than tourism and change from the Space Shuttle Program was centered in cities closest to the KSC.
Show less - Date Issued
- 2021
- PURL
- http://purl.flvc.org/fau/fd/FA00013744
- Subject Headings
- Land use, Land cover, Population Dynamics, Brevard County (Fla.), John F. Kennedy Space Center
- Format
- Document (PDF)
- Title
- Mapping wetland vegetation with LIDAR in Everglades National Park, Florida, USA.
- Creator
- De Stoppelaire, Georgia H., Xie, Zhixiao, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Geosciences
- Abstract/Description
-
Knowledge of the geospatial distribution of vegetation is fundamental for resource management. The objective of this study is to investigate the possible use of airborne LIDAR (light detection and ranging) data to improve classification accuracy of high spatial resolution optical imagery and compare the ability of two classification algorithms to accurately identify and map wetland vegetation communities. In this study, high resolution imagery integrated with LIDAR data was compared jointly...
Show moreKnowledge of the geospatial distribution of vegetation is fundamental for resource management. The objective of this study is to investigate the possible use of airborne LIDAR (light detection and ranging) data to improve classification accuracy of high spatial resolution optical imagery and compare the ability of two classification algorithms to accurately identify and map wetland vegetation communities. In this study, high resolution imagery integrated with LIDAR data was compared jointly and alone; and the nearest neighbor (NN) and machine learning random forest (RF) classifiers were assessed in semi-automated geographic object-based image analysis (GEOBIA) approaches for classification accuracy of heterogeneous vegetation assemblages at Everglades National Park, FL, USA.
Show less - Date Issued
- 2014
- PURL
- http://purl.flvc.org/fau/fd/FA00004276
- Subject Headings
- Everglades National Park (Fla.)--Environmental conditions., Geographic information systems--Florida--Everglades Region., Ecosystem management--Florida--Everglades Region., Vegetation monitoring--Florida--Everglades National Park., Wetland management--Florida--Everglades National Park., Coastal zone management--Remote sensing--Florida--Everglades National Park., Environmental mapping--Florida--Everglades National Park., Environmental monitoring--Remote sensing--Florida--Everglades National Park.
- Format
- Document (PDF)
- Title
- FAU Climate Change Initiative Priority Theme: Research, Engineering, and Adaption to a Change Climate.
- Creator
- Berry, Leonard, Koch, Marguerite, Center for Environmental Studies, Benscoter, Brian, Comas, Xavier, Devlin, Donna, Fadiman, Maria, Gerstein, E., Herzing, Denise L., Hindle, Tobin, Milton, Sarah L., Oleinik, Anton E., Proffitt, C. Edward, Restrepo, Jorge I., Root, Tara L., Wyneken, Jeanette, Xie, Zhixiao, Zhang, Xing-Hai, Esnard, Ann-Margaret, Mitsova, Diana, Murley, J., Vos, J., Escaleras, Monica, Mehallis, M., Shaw, Eric H., Hardman, Guillermo [John], Lambert, Julie, Thomas, G., Arockiasamy, Madasamy, Bloetscher, Frederick, Carvalho, G., Dhanak, Manhar R., Frisk, George V., Kaisar, Evangelos I., Kalva, Hari, Meeroff, Daniel E., Rodriguez, Jarice, Scarlatos, Panagiotis (Pete) D., Shankar, Ravi, Teegavarapu, Ramesh, Brown, Clifford T., McAfee, Francis, Widener, Patricia, Dalgleish, Fraser R., Hanisak, M. Dennis, McMulloch, S., O'Corry-Crowe, Gregory, Pomponi, Shirley A., Reed, John K., Scarpa, John, Voss, Joshua, Heimlich, Barry N., Alvarez, R., Jolley, J., Edwards, A., Charles E. Schmidt College of Science, Harbor Branch Oceanographic Institute, College of Business, Dorothy F. Schmidt College of Arts and Letters, College of Education, College of Engineering and Computer Science
- Date Issued
- 2010
- PURL
- http://purl.flvc.org/fau/fd/FA00003457
- Format
- Citation