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Articles 1 - 30 of 119
Full-Text Articles in Physical Sciences and Mathematics
Lesson Not Learned: Deepwater Horizon Research And Media Coverage Exposes Gaps In Knowledge And Risky Protocol Within The Oil Industry, Lauren Haller
Lesson Not Learned: Deepwater Horizon Research And Media Coverage Exposes Gaps In Knowledge And Risky Protocol Within The Oil Industry, Lauren Haller
Honors Theses
An insatiable thirst for oil has led poorly coordinated, risk-prone megasystems deeper into the ocean in search of new oil reserves. Profit-driven agendas at the corporate level have a top-down effect within these megasystems. Cost-cutting and risk-downplaying leaves the field employees unprepared to handle emergencies. A series of costly mistakes led to the 2010 BP Deepwater Horizon oil spill, which caused extensive damage to an already fragile ecosystem in the Gulf of Mexico. The wealth and political influence of the oil industry overpowers lax regulatory agencies and legislation-even though media and research has exposed frustrating parallels between the Deepwater Horizon …
Whole-Rock Lead-Lead Systematics And Major Element Analyses On The 1.85 Ga. Flin Flon Paleosol, Manitoba, Canada: Implications For Uranium Mobility., Federico Arturo Valencia
Whole-Rock Lead-Lead Systematics And Major Element Analyses On The 1.85 Ga. Flin Flon Paleosol, Manitoba, Canada: Implications For Uranium Mobility., Federico Arturo Valencia
Geosciences Theses
The 1.85 Ga Flin Flon paleosol located in Flin Flon, Manitoba, Canada, is studied with the purpose of determining the timing and geochemical trend of uranium migration. Radiometric minimum ages of sediments and paleosols indicates the presence of a post-depositional event, these ages are bracketed by the Trans-Hudson orogeny event (2155–1750 Ma) which resulted in the alteration of κ(Th/U) and µ(U/Pb) ratios by exposing volcanics to the atmosphere and instigating the mobilization of U. The profile shows that the Missi sediments lost Uby 84% average relative to corrected average upper crust value. The upper paleosol gained U by 11% and …
If And How Many 'Races'? The Application Of Mixture Modeling To World-Wide Human Craniometric Variation, Bridget Frances Beatrice Algee-Hewitt
If And How Many 'Races'? The Application Of Mixture Modeling To World-Wide Human Craniometric Variation, Bridget Frances Beatrice Algee-Hewitt
Doctoral Dissertations
Studies in human cranial variation are extensive and widely discussed. While skeletal biologists continue to focus on questions of biological distance and population history, group-specific knowledge is being increasingly used for human identification in medico-legal contexts. The importance of this research has been often overshadowed by both philosophic and methodological concerns. Many analyses have been constrained in their scope by the limited availability of representative samples and readily criticized for adopting statistical techniques that require user-guidance and a priori information. A multi-part project is presented here that implements model-based clustering as an alternative approach for population studies using craniometric traits. …
Perception Of Aquifer Depletion And The Effects Of Land Use Change Across The Madaba Plain, Jordan, Mohammad Salem
Perception Of Aquifer Depletion And The Effects Of Land Use Change Across The Madaba Plain, Jordan, Mohammad Salem
Graduate Theses and Dissertations
In Jordan, demand for water for agricultural purposes has put a high strain on aquifer resources. Water mining, erosion, and desertification have all increased as global temperatures rise. This along with fragmentation of the landscape have altered the environment in a profound way. The Madaba Plain was chosen for this study due to the agricultural activities that take place there, as well as the proximity to a number of population centers. The purpose of the study is to examine how fragmentation of irrigated landscape has affected the aquifers underneath, while taking into account perceptions of risk of the local population. …
Object Recognition Based On Shape And Function, Akihiro Eguchi
Object Recognition Based On Shape And Function, Akihiro Eguchi
Computer Science and Computer Engineering Undergraduate Honors Theses
This thesis explores a new approach to computational object recognition by borrowing an idea from child language acquisition studies in developmental psychology. Whereas previous image recognition research used shape to recognize and label a target object, the model proposed in this thesis also uses the function of the object resulting in a more accurate recognition. This thesis makes use of new gaming technology, Microsoft’s Kinect, in implementing the proposed new object recognition model. A demonstration of the model developed in this project properly infers different names for similarly shaped objects and the same name for differently shaped objects.
Geospatial Tools And Techniques For Watershed Management Using Swat 2009, Naresh Pai
Geospatial Tools And Techniques For Watershed Management Using Swat 2009, Naresh Pai
Graduate Theses and Dissertations
In this study, geospatial tools and techniques were developed to support specific aspects of watershed pollution management, such as quantifying land-use change (LUC) impacts, prioritizing subwatersheds, and communicating field-scale impacts, using the soil and water assessment tool 2009 (SWAT 2009) model.
For the land-use change objective, a geospatial tool titled SWAT2009_LUC was developed that enables SWAT modelers to prepare specific input files for simulating concurrent land-use changes during the SWAT 2009 model simulations. Testing of the tool for the Illinois River Drainage Area in Arkansas (IRDAA) watershed showed that the tool accurately represented temporal land-uses within the model. Model simulations …
Analyzing Spring Freeze Impacts On Deciduous Forest Productivity Using Modis Satellite Imagery, Karl Lintvedt
Analyzing Spring Freeze Impacts On Deciduous Forest Productivity Using Modis Satellite Imagery, Karl Lintvedt
Graduate Theses and Dissertations
The impacts of an April 2007 spring freeze event on the productivity of deciduous broadleaf forest were analyzed using geographic information system (GIS) tools. Forest productivity was modeled using the Enhanced Vegetation Index (EVI), as recorded by the Moderate Resolution Imaging Spectroradiometer (MODIS) satellite sensor. Measures of spatial autocorrelation were used to quantify the degree of spatial congruence between a map depicting the severity of the freeze event, and maps modeling forest productivity throughout the year. The results show a geographic correlation between the unseasonably low minimum temperatures sustained during the freeze and the unusually low forest productivity that followed. …
Improvements In Multi-Tool Surveying Efficiency For Archaeological Geophysics, Caitlyn Marie Williams
Improvements In Multi-Tool Surveying Efficiency For Archaeological Geophysics, Caitlyn Marie Williams
Masters Theses
Conventional archaeological excavation methods are, by nature, extremely invasive and result in study areas being irrevocably altered for the sake of research. For this reason, near-surface geophysical techniques have been incorporated into archaeological investigations to aid in determining the locations of buried features with minimal damage to the site. The objective of this research was to perform a geophysical survey at an archaeological site on the Akrotiri Peninsula in Cyprus to locate evidence of a Roman naval base and to develop an improved data management workflow that will improve the usefulness of geophysical data to archaeologists.
An on-site archaeologist determined …
Development Of A Simulation Tool For Analysis Of Freeway Crashes Due To Cell Phone Usage, Sourabh Sriom
Development Of A Simulation Tool For Analysis Of Freeway Crashes Due To Cell Phone Usage, Sourabh Sriom
UNLV Theses, Dissertations, Professional Papers, and Capstones
Research shows that drivers are susceptible to numerous distractions while driving which can be held responsible as the reason of a crash. Usage of cell phones, i.e. talking or texting while driving is considered one of the prominent distractions which causes a crash. This dissertation aims to study the number of crashes occurring on the freeways and their relation with the drivers of these cars using cell phones while they are driving. Since crashes occur relatively less frequently, the study of crashes is done using what is called the "rare event" theory. Java based simulations are done to model a …
A Landscape Approach To Late Prehistoric Settlement And Subsistence Patterns In The Mojave Sink, Tiffany Ann Thomas
A Landscape Approach To Late Prehistoric Settlement And Subsistence Patterns In The Mojave Sink, Tiffany Ann Thomas
UNLV Theses, Dissertations, Professional Papers, and Capstones
The environment of the Late Prehistoric period (1200 A.D. to Historic Contact) Mojave Sink was wetter than modern conditions. The settlement and subsistence patterns of the occupants of the region during this period were driven by the availability of water, subsistence resources, raw material sources, and tradition. These people utilized the regional landscape based upon the seasonal availability of these resources. Supplemental agricultural production has been proposed for the Mojave River Delta due to the more favorable environmental conditions of this period. If agriculture was being practiced it would have affected the regional land-use patterns. For this thesis I propose …
A Geochemical Analysis: Application Of A Chelating Agent On Potential Asr Reactive Aggregates, Jennifer N. Garcia
A Geochemical Analysis: Application Of A Chelating Agent On Potential Asr Reactive Aggregates, Jennifer N. Garcia
Geosciences Theses
Alkali Silica Reaction (ASR) is a deleterious, expansive reaction in concrete. Several ASTM methods test potential aggregates for ASR risk. One method uses NaOH digestion, followed by spectroscopic methods, to estimate the amount of reactive silica present in an aggregate. NaOH, however, can digest both crystalline (i.e. quartz) and non-crystalline (e.g. opal), or poorly crystalline silica, potentially yielding falsely high estimates of reactive silica. Studies in soil and plant sciences have used Tiron, an alkaline chelating agent (C6H4S2O8Na2), as a method of digesting opaline silica for spectroscopic analysis. Here we …
A Representation Of Selected Nonmanual Signals In American Sign Language, Jerry C. Schnepp
A Representation Of Selected Nonmanual Signals In American Sign Language, Jerry C. Schnepp
College of Computing and Digital Media Dissertations
Computer-generated three-dimensional animation holds great promise for synthesizing utterances in American Sign Language (ASL) that are not only grammatical, but believable by members of the Deaf community. Animation poses several challenges stemming from the massive amounts of data necessary to specify the movement of three-dimensional geometry, and there is no current system that facilitates the synthesis of nonmanual signals. However, the linguistics of ASL can aid in surmounting the challenge by providing structure and rules for organizing the data.
This work presents a first method for representing ASL linguistic and extralinguistic processes that involve the face. Any such representation must …
A Google Earth-Based Framework For Visualization Of The Chesapeake Bay Operational Forecast System, Gary Lawson
A Google Earth-Based Framework For Visualization Of The Chesapeake Bay Operational Forecast System, Gary Lawson
Computational Modeling & Simulation Engineering Theses & Dissertations
For the persons who live near and travel the waters of the Chesapeake Bay, the data provided by the Chesapeake Bay Operational Forecast System (CBOFS) is invaluable. The information provided includes measurements and forecasts of surface wind velocity, water current velocity, salinity levels, water level, and temperature. Currently, this information is freely available on the CBQ_FS website hosted by the National Oceanographic and Atmospheric Administration (NOAA). It is offered as Nowcast, measured data, and Forecast data and is visualized using 2D images which describe a subset of the data in an easy to read chart. However, if the data were …
The Application Of Dialectical Behavior Therapy To Chronic Pain Management, Jacob S. Iwaszewski
The Application Of Dialectical Behavior Therapy To Chronic Pain Management, Jacob S. Iwaszewski
Loma Linda University Electronic Theses, Dissertations & Projects
Pain affects more than 50 million Americans annually, costs over 150 billion dollars each year in healthcare and legal expenses, and results in decreased work productivity and missed work days (Ballantyne, 2006; Boll, Raczynski, & Leviton, 2004; Thom, 2004). It is estimated that chronic pain negatively impacts 15% to 33% of the US population (Bokarius et al., 2008). Third-wave acceptance-based therapies, such as Dialectical Behavior Therapy (DBT), have demonstrated significant improvements in mental health functioning for a variety of populations (Carmody & Baer, 2008; Cusens, Duggan, Thome, & Burch, 2010). DBT, one of the primary treatment modalities for Borderline Personality …
Analysis Of Chinese Dry Bulk Ship Operators' Operation Mode And Strageties Basis On Voyage Estimation, Jinlong Ke
Analysis Of Chinese Dry Bulk Ship Operators' Operation Mode And Strageties Basis On Voyage Estimation, Jinlong Ke
World Maritime University Dissertations
No abstract provided.
Research On Port-City Economic Interaction Effect Between Shanghai And Yangshan Port, Yifan Xu
Research On Port-City Economic Interaction Effect Between Shanghai And Yangshan Port, Yifan Xu
World Maritime University Dissertations
No abstract provided.
Analysis Of Proper Capacity At Jakarta International Container Terminal, Dwipoyono Bagus
Analysis Of Proper Capacity At Jakarta International Container Terminal, Dwipoyono Bagus
World Maritime University Dissertations
No abstract provided.
Multimodal Transport Cost Analysis Of Coal Transport From Datong To Wh Power Station, Tingting Gao
Multimodal Transport Cost Analysis Of Coal Transport From Datong To Wh Power Station, Tingting Gao
World Maritime University Dissertations
No abstract provided.
The Strategy Of Yingkou Port Development Under The Competition And Cooperation Among Three Major Ports In Liaoning Province, Yangzi Dong
World Maritime University Dissertations
No abstract provided.
The Research On Ship Financing Lease Mode And Risk Prevention, Yang Liu
The Research On Ship Financing Lease Mode And Risk Prevention, Yang Liu
World Maritime University Dissertations
No abstract provided.
Market Structure Of Port Clusters And Analysis On The Number Of Effective Competitors, Ruoqi Qian
Market Structure Of Port Clusters And Analysis On The Number Of Effective Competitors, Ruoqi Qian
World Maritime University Dissertations
No abstract provided.
An Investigation Of Shipping Derivatives Based On Risk Evaluation, Sheng Yang
An Investigation Of Shipping Derivatives Based On Risk Evaluation, Sheng Yang
World Maritime University Dissertations
No abstract provided.
Research On The Fluctuation And Forecasting Of International Dry Bulk Shipping Market Cycle Based On Rocet, Qianmo Zhang
Research On The Fluctuation And Forecasting Of International Dry Bulk Shipping Market Cycle Based On Rocet, Qianmo Zhang
World Maritime University Dissertations
No abstract provided.
Liner Shipping Lane Planning From Shanghai Port To Guangzhou Port Of Shanghai Baoyin Shipping Co., Ltd, Zhujun Zhou
Liner Shipping Lane Planning From Shanghai Port To Guangzhou Port Of Shanghai Baoyin Shipping Co., Ltd, Zhujun Zhou
World Maritime University Dissertations
No abstract provided.
Optimum Vessel Size (New Maersk 18,000 Teu Vessels) And Operations In The Malacca Straits, Knoll David Brian
Optimum Vessel Size (New Maersk 18,000 Teu Vessels) And Operations In The Malacca Straits, Knoll David Brian
World Maritime University Dissertations
No abstract provided.
The Study On The Optimization For Coscon Fleet Deployment In The Asia-Europe Lane, Zhihao Lin
The Study On The Optimization For Coscon Fleet Deployment In The Asia-Europe Lane, Zhihao Lin
World Maritime University Dissertations
No abstract provided.
Economic Analysis On The Sustainability Of Slow Steaming In Liner Shipping, Zhou Dong
Economic Analysis On The Sustainability Of Slow Steaming In Liner Shipping, Zhou Dong
World Maritime University Dissertations
No abstract provided.
The Research On Site Selection Of Dry Port Cluster Of Ningbo Port, Jiawei Feng
The Research On Site Selection Of Dry Port Cluster Of Ningbo Port, Jiawei Feng
World Maritime University Dissertations
No abstract provided.
The Research On Competitiveness Of The Shipping Sectors In Pudong Shipping Cluster Of Shanghai International Shipping Center, Yuan Feng
World Maritime University Dissertations
No abstract provided.
Research On The Impact Of Container Freight Derivatives On Shipping, Zhenle Shen
Research On The Impact Of Container Freight Derivatives On Shipping, Zhenle Shen
World Maritime University Dissertations
No abstract provided.