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2009

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The Effects Of Inorganic Solids And Certain Gases On The Thermal Decomposition Of Catechol, Jerome Apilan Robles Jan 2009

The Effects Of Inorganic Solids And Certain Gases On The Thermal Decomposition Of Catechol, Jerome Apilan Robles

LSU Doctoral Dissertations

In order to investigate the effects of calcium carbonate and iron oxide on the thermal decomposition of solid fuels, we have constructed an isothermal flow reactor to perform experiments on the model compound catechol (ortho-dihydroxybenzene), a phenol-type compound representative of coal, wood and biomass. Calcium carbonate and iron oxide are inorganic components of coal and wood, which have demonstrated catalytic properties in thermal reactions and are commercially used to enhance the conversion of solid fuels. In this study, the effects of the inorganic solids on pyrolysis and combustion are conducted through identification and quantification of the products formed after subjecting …

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Toward Social Search: From Explicit To Implicit Collaboration To Predict Users' Interests, Luca Longo, Stephen Barrett Jan 2009

Toward Social Search: From Explicit To Implicit Collaboration To Predict Users' Interests, Luca Longo, Stephen Barrett

Conference papers

Inspection methods and cheap self-reporting procedures have been significantly employed in the field of Human- Computer Interaction for assessing the usability of interfaces, systems and technologies. However, there is a tendency to overlook aspects related to the context and features of the users during the usability assessment process. This research introduces the concept of mental workload as an aid to enhance usability measurement. A user-study has been designed and executed in the context of human-web interaction. The aim was to investigate the relationship between the perception of usability of three popular web-sites, and the mental workload imposed by a set …

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Arthropod And Vertebrate Determinants For Horizontal Transmission Of Rickettsia Felis, Kathryn Elizabeth Reif Jan 2009

Arthropod And Vertebrate Determinants For Horizontal Transmission Of Rickettsia Felis, Kathryn Elizabeth Reif

LSU Doctoral Dissertations

Rickettsia felis is a gram-negative bacterium predominantly described in the cat flea, Ctenocephalides felis. Since first described in 1990 in a commercial cat flea colony in the United States, R. felis has been detected in numerous arthropod species in 28 countries around the world. Additionally, as the etiologic agent of flea-borne rickettsiosis, R. felis can cause disease in humans, with patients presenting with clinical symptoms typical of rickettsial diseases including: fever, headache, and myalgia. Transmission of R. felis within flea colonies is predominantly via vertical (transovarial and transstadial) transmission and mechanisms of horizontal transmission are undescribed. Studies are needed to …

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Computational Studies Of The Properties Of Copper Oxide Clusters And The Reactions Of Phenol And Chlorinated Phenols With Copper Oxide Clusters, Gyun-Tack Bae Jan 2009

Computational Studies Of The Properties Of Copper Oxide Clusters And The Reactions Of Phenol And Chlorinated Phenols With Copper Oxide Clusters, Gyun-Tack Bae

LSU Doctoral Dissertations

We used ab initio simulations and calculations to study the structures and stabilities of copper oxide clusters, CunOn (n=1-8) and CuOn (n=1-6). The lowest energy structures of neutral and charged copper oxide clusters were determined using primarily the B3LYP/LANL2DZ model chemistry. In CunOn clusters with n=1-8, a transition from planar to nonplanar geometries occurs at n=4. In CuOn clusters with n=1-6, all geometries of neutral, positively, and negatively charged clusters are planar or near planar structures. Selected electronic properties, including binding energies, ionization energies, and electronic affinities, were calculated and examined as a function of n. Stabilities were examined by …

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The Agricultural Industry As Percieved By Members Of The General Public Of Louisiana, Julie Baker Richard Jan 2009

The Agricultural Industry As Percieved By Members Of The General Public Of Louisiana, Julie Baker Richard

LSU Doctoral Dissertations

The purpose of this study was to determine the knowledge and perceptions of the animal, plant, environmental, and food sciences by the adult residents of Louisiana. This study was conducted using a survey research design. This survey utilized random telephone dialing techniques in order to survey 547 residents of Louisiana. The survey instrument consisted of fifty-five questions divided into three sections: demographic characteristics, agriculture knowledge, and perception of agriculture. The overall mean agriculture knowledge score of adult residents of Louisiana for the twenty items included in the survey instrument equaled 13.60 (SD = 2.743) or 68%. Perceptions of agriculture results …

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Integrated Data-Driven Techniques For Environmental Pollution Monitoring, Swathi Pakalapati Jan 2009

Integrated Data-Driven Techniques For Environmental Pollution Monitoring, Swathi Pakalapati

LSU Doctoral Dissertations

The adverse health e_x000B_ffects of tropospheric ozone around urban zones indicate a substantial risk for many segments of the population. This necessitates the short term forecast in order to take evasive action on days conducive to ozone formation. Therefore it is important to study the ozone formation mechanisms and predict the ozone levels in a geographic region. Multivariate statistical techniques provide a very e_x000B_ffective framework for the classifi_x000C_cation and monitoring of systems with multiple variables. Cluster analysis, sequence analysis and hidden Markov models (HMMs) are statistical methods which have been used in a wide range of studies to model the …

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Polymer-Based Microfluidic Devices For High Throughput Single Molecule Detection: Applications In Biological And Drug Discovery, Paul Ichide Okagbare Jan 2009

Polymer-Based Microfluidic Devices For High Throughput Single Molecule Detection: Applications In Biological And Drug Discovery, Paul Ichide Okagbare

LSU Doctoral Dissertations

The realization of high throughput sample processing has become a primary ambition in many research applications with an example being high throughput screening (HTS), which represents the first step in the drug discovery pipeline. Microfluidics is a viable platform for parallel processing of biochemical reactions to increase data production rates due to its ability to generate fluidic networks with a high number of processors over small footprints suitable for optical imaging. Single-molecule detection (SMD) is another technology which has emerged to facilitate the realization of high throughput data processing afforded by its ability to eliminate sample processing steps and generate …

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The Fate And Transport Of Light Petroleum Hydrocarbons In The Lower Mississippi River Delta, Samantha Nicole Danchuk Jan 2009

The Fate And Transport Of Light Petroleum Hydrocarbons In The Lower Mississippi River Delta, Samantha Nicole Danchuk

LSU Doctoral Dissertations

Important processes governing the fate and transport of light petroleum hydrocarbons in the Lower Mississippi River and other river delta systems are not adequately represented in existing oil spill models. In response, three methods were introduced to include the effects of dynamic annual discharges and variation of shoreline type on shoreline retention and re-floatation and the potential of oil- mineral aggregate formation based contributing environmental factors. Parcel tracking was used, in conjunction with detailed shoreline types correlated to flow rate, to evaluate the benefits of using multiple shoreline re-floatation half lives correlated to shoreline type instead of a single half …

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Evaluation Of Pectin Methylesterase And Lactobacillus Spp. Isolated From Tabasco Peppers (Capsicum Frutescens L.), Sonja Tanee Jones Jan 2009

Evaluation Of Pectin Methylesterase And Lactobacillus Spp. Isolated From Tabasco Peppers (Capsicum Frutescens L.), Sonja Tanee Jones

LSU Doctoral Dissertations

One of the major concerns of the hot sauce manufacturers is separation of sediments and layering of the sauce. Separation is an undesirable production condition because consumers view this as a defect which consequently increases manufacturing costs. Pectins play an important role in pepper processing since it forms gels and influences the final viscosity of the sauce. Hence, its integrity during processing influences the quality of the final product. Failures in pectin stability can sometimes be related to the presence of enzymes. Understanding how the pectin enzymes function during fermentation of pepper sauce is a necessary step in controlling the …

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Factors Influencing The Perceived Usefulness Of An Information Delivery Website Among The United States Resident Viewership, Frederick Joseph Piazza Jan 2009

Factors Influencing The Perceived Usefulness Of An Information Delivery Website Among The United States Resident Viewership, Frederick Joseph Piazza

LSU Doctoral Dissertations

Throughout the 1990s and 2000s, the World Wide Web (Web) has become a major media outlet for disseminating information. Government and Higher Education institutions have both embraced Web technologies to serve the needs of their clientele. Thus, a method of developing targeted Web-based material that is optimized for the viewer to provide the greatest impact in terms of usefulness is needed. The primary purpose of this study was to determine the influence of selected demographic characteristics on the perception of usefulness among United States resident viewers of an information delivery website. The accessible population for this study was all viewers …

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Joseph Messner's Organ Music: Evolution Of A Style, Julie Powell Rozman Jan 2009

Joseph Messner's Organ Music: Evolution Of A Style, Julie Powell Rozman

LSU Doctoral Dissertations

Joseph Messner (1893-1969) achieved fame in Europe for his contributions to the sacred concerts of the Salzburg Festspiele following World War II. In his early career, however, Messner earned initial acclaim as a recitalist and renowned improviser on the organ. Messner composed and published several organ works prior to World War II which contain style elements of late-romanticism and an emerging neoclassicism. This paper analyses the works in regards to form, stylistic elements, and performance issues in addition to establishing the historical contexts from which they originated.

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Quantum Nonlinear Optics: Applications To Quantum Metrology, Imaging, And Information, Ryan Glasser Jan 2009

Quantum Nonlinear Optics: Applications To Quantum Metrology, Imaging, And Information, Ryan Glasser

LSU Doctoral Dissertations

The fields of quantum and nonlinear optics have given rise to a variety of nonclassical states of light that have been proven to surpass certain limitations set by classical physics. Namely, certain squeezed and entangled states have been shown to beat the shot-noise limit when making precision phase measurements in interferometry, as well as write lithographic patterns that are smaller than classically allowed by the Rayleigh diffraction limit. Additionally, single-photon sources and entangled photon pairs have given rise to provably secure quantum key distribution for cryptography. Producing these quantum states of light has proven a difficult task. Nonlinear crystals, when …

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Ecological Risk Models For Visceral Leishmaniais [Sic] In Bahia, Brazil And Diagnosis Of Trypanosoma Cruzi Infection In Dogs In South Central Louisiana, Prixia Nieto Jan 2009

Ecological Risk Models For Visceral Leishmaniais [Sic] In Bahia, Brazil And Diagnosis Of Trypanosoma Cruzi Infection In Dogs In South Central Louisiana, Prixia Nieto

LSU Doctoral Dissertations

Three predictive models were developed within a geographic information system using earth observing satellite remote sensing (RS), the Genetic Algorithm for Rule-Set Prediction (GARP) and the growing degree day-water budget (GDD-WB) concept to predict the distribution and potential risk of visceral leishmaniasis (VL) in the State of Bahia, Brazil. The objective was to define the environmental suitability of the disease as well as to obtain a deeper understanding of the eco-epidemiology of VL by associating environmental and climatic variables with disease prevalence. The RS, the GARP model and the GDD-WB model, using different analysis approaches and with the same human …

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Psychopathology In Person With And Without Co-Morbid Autism, Martin Nicholas Ancona Jan 2009

Psychopathology In Person With And Without Co-Morbid Autism, Martin Nicholas Ancona

LSU Doctoral Dissertations

Autism and intellectual disability are frequently co-occurring. In addition, a diagnosis of mild, moderate, severe, or profound intellectual disability increases the risk for co-occurring Axis I psychiatric disorders. This study utilized multivariate analyses of variance (MANOVA) to determine whether mean differences exist across three diagnostic groups: ID only, ID and autism, and ID and pervasive developmental disorder not otherwise specified (PDD-NOS) on the linear combination of subscales present on the Diagnostic Assessment of the Severely Handicapped-II (DASH-II), a psychometrically sound measure that assesses psychopathology in those with ID. The results of this study supported an association between the presence of …

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Children Of Men: The American Jeremiad In Twentieth And Twenty-First Century Science Fiction And Film, Joseph Franklin Brown Jr. Jan 2009

Children Of Men: The American Jeremiad In Twentieth And Twenty-First Century Science Fiction And Film, Joseph Franklin Brown Jr.

LSU Doctoral Dissertations

This dissertation considers the dynamic and resilient influence of the jeremiad, an early American religious and literary mode, on contemporary American literature and culture. It argues that the polemical, dystopian, and apocalyptic narratives so abundant in twentieth-century literature and film participate in an ingrained literary tradition that accounts for society's misfortunes as penalty for its social and moral evils while, at the same time, emphasizing an American exceptionalism born out of a belief in the society's election through its covenant with God. The project makes connections between early-American texts and related works of twentieth and twenty-first century American literature and …

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Proxy Records Of Paleohurricanes For The Western And Southern Caribbean, Terrence Allen Mccloskey Jan 2009

Proxy Records Of Paleohurricanes For The Western And Southern Caribbean, Terrence Allen Mccloskey

LSU Doctoral Dissertations

This dissertation evaluates the hypothesis that hurricane activity levels in the North Atlantic during the late Holocene have been driven by latitudinal movements of the North Atlantic circulation system. Multi-millennial sedimentary proxy records, based on the occurrence of overwash clastic layers, provide clear evidence of abruptly alternating periods of hurricane landfall frequency for Nicaragua and Belize. Three Belizean transects exhibit an Active period (hyperactivity) occurring from ~2000-6000 cal yr BP, although dating is inconsistent across the transects. An Active period covering the last 500 years is found at one location. The Nicaraguan record, derived from three transects covering >90 km …

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Three Essays On Environmental Issues Associated With Broiler Production In Louisiana, Nirmala Adhikari Devkota Jan 2009

Three Essays On Environmental Issues Associated With Broiler Production In Louisiana, Nirmala Adhikari Devkota

LSU Doctoral Dissertations

The increasing trends of integrated and concentrated broiler production results in a serious threat to environment through excessive litter production and lack of its proper disposal. Production concentration in limited area is a major source of surface as well as ground water pollution. Nonpoint source pollution from broiler litter applied on land remains a major concern in Louisiana and elsewhere in Southeastern USA. This study examines alternative approaches to reduce pollution originating from broiler production. First, I evaluate why some producers adopt BMP faster than others and what kind of factors affect the time to adoption decision. The duration model …

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Characterization Of Porcine Adipose Tissue-Derived Stem Cells, Kellie J. Williams Jan 2009

Characterization Of Porcine Adipose Tissue-Derived Stem Cells, Kellie J. Williams

LSU Doctoral Dissertations

Nuclear transfer (NT) results in low success rates and research has reported problems with the welfare of cloned animals produced. Evidence suggests the use of a less differentiated donor cell, such as a stem cell, may lead to an increase in the efficiency of the NT procedure. Stem cell characteristics must be clearly defined in order to isolate, identify and optimally culture potential donor cells. Stem cell characteristics such as self-renewal and differentiation have not been identified in stem cells from porcine adipose tissue, an easily attainable tissue resource. The phenotypic profile of cell surface proteins and chromosomal stability of …

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Assessing The Development Of High School Chemistry Students' Conceptual And Visual Understanding Of Dimensional Analysis Via Supplemental Use Of A Proprietary Interactive Software Program, Jennifer Tennille Pinder Ellis Jan 2009

Assessing The Development Of High School Chemistry Students' Conceptual And Visual Understanding Of Dimensional Analysis Via Supplemental Use Of A Proprietary Interactive Software Program, Jennifer Tennille Pinder Ellis

LSU Doctoral Dissertations

This study was designed to evaluate the effects of the proprietary science education software, “Conversionoes,” on students' conceptual and visual understanding of dimensional analysis. The participants in the study were high school general chemistry students enrolled in two public high schools with different demographics (School A and School B) in the Chattanooga, Tennessee, metropolitan area. A mixed methods design was used in the data collection and analysis to provide a holistic view of the impact of the software on student learning, via a value-added design. The resulting qualitative and quantitative data indicated that the Conversionoes software enhanced the treatment groups’ …

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The Interactive Effects Of Phosporus And Calcium On Phosphorus Requirement, Utilization, And Phytase Efficacy In Poultry, Syrena Powell Jan 2009

The Interactive Effects Of Phosporus And Calcium On Phosphorus Requirement, Utilization, And Phytase Efficacy In Poultry, Syrena Powell

LSU Doctoral Dissertations

This research was conducted with broilers to investigate the interactive effects of P and Ca on P requirement, digestibility, utilization, and phytase efficacy. Each treatment had a minimum of 6 replications. One experiment with 3 trials was conducted to identify the nonphytate P (nPP) requirement of 0 to 14 d old broilers. The nPP levels fed ranged from 0.30 to 0.60% with a Ca:nPP of 2.22:1 or 1.9:1. Requirement estimates for 0 to 14 d ranged from 0.52 to 0.60% nPP. One experiment with 2 trials was conducted to identify the nPP requirement of 14 to 28 d old broilers. …

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Peptide Targeting Of Platinum Anti-Cancer Drug And Synthesis Of Water Soluble Monofunctional Pt(Ii) Complexes Useful For Biological Labeling, Margaret W. Ndinguri Jan 2009

Peptide Targeting Of Platinum Anti-Cancer Drug And Synthesis Of Water Soluble Monofunctional Pt(Ii) Complexes Useful For Biological Labeling, Margaret W. Ndinguri

LSU Doctoral Dissertations

Platinum has been used as an inorganic medicinal agent with various applications such as anti cancer agents. Several new targeted Pt(II) conjugates were synthesized having the NGR and LHRH targeting motif. The platinum conjugates bearing the NGR motif revealed selective delivery and destruction of cancer cells that had CD13 receptors compared to untargeted carboplatin drug. The development of targeted chemotherapeutic has opened a new approach for efficient delivery of antitumor toxins with minimal exposure to normal cells. Several peptide sequences are known to have the ability to target tumors, for instance NGR motif which home specifically in solid tumors and …

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Granular Activated Carbon Sorption As A Load Equalization Mechanism In Operation Of Air Pollution Control Devices, Marilou Montevirgen Nabatilan Jan 2009

Granular Activated Carbon Sorption As A Load Equalization Mechanism In Operation Of Air Pollution Control Devices, Marilou Montevirgen Nabatilan

LSU Doctoral Dissertations

Transient periods of unsteady loading pose a challenge in design and operation of bioreactors for air pollution control. As a potential means of overcoming some of these challenges, a systematic study of granular activated carbon (GAC) sorption was conducted to further evaluate its potential as a load equalization mechanism for unsteady loading of volatile organic carbons (VOCs). GAC columns were experimentally tested under dynamic loading conditions involving variations in contaminant concentrations, gas flow rates, and relative humidity. Toluene was used as model VOC, and BPL 4x6 mesh GAC was used as a model adsorbent. The research was divided into four …

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Cross-Disciplinary Approaches For Developing Serious Games In Higher Education: Frameworks For Food Safety And Environmental Health Education, Pauline Rooney, K.C. O'Rourke, Greg Burke, Brian Mac Namee, Claudia Igbrude Jan 2009

Cross-Disciplinary Approaches For Developing Serious Games In Higher Education: Frameworks For Food Safety And Environmental Health Education, Pauline Rooney, K.C. O'Rourke, Greg Burke, Brian Mac Namee, Claudia Igbrude

Conference papers

While some educators have adopted commercial off the-shelf games for use in the classroom, such games may not always meet the individual requirements of lecturers whose courses are tied to specific learning utcomes. An alternative is to capitalise on in-house expertise in Higher Education and create serious games through cross-disciplinary team projects. This paper outlines such a project within one Higher Education institution. It describes synergies created across disciplines as a result of the collaboration on game design and implementation. It looks at tensions generated between the pedagogical requirements (of lecturers), entertainment objectives (of games designers) and technical excellence (sought …

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Compensating For Expressiveness In Queries To A Content Based Music Information Retrieval System, Bryan Duggan, Brendan O'Shea, Mikel Gainza, Padraig Cunningham Jan 2009

Compensating For Expressiveness In Queries To A Content Based Music Information Retrieval System, Bryan Duggan, Brendan O'Shea, Mikel Gainza, Padraig Cunningham

Conference papers

MATT2 is a content based music information retrieval system adapted to the characteristics of traditional Irish dance music. MATT2 compensates for expressive artefacts commonly employed by traditional musicians. Specifically these are ornamentation, "the long note", reversing and phrasing. In this paper we describe the main components of MATT2 and present an experiment where we demonstrate that using this higher level knowledge of melodic similarity in traditional Irish dance music results in a significant improvement in annotation accuracy over standard approaches from the MIR literature.

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The Murrow Tradition: What Was It, And Does It Still Live?, Raluca Cozma Jan 2009

The Murrow Tradition: What Was It, And Does It Still Live?, Raluca Cozma

LSU Doctoral Dissertations

This dissertation explores the differences in the quality of radio foreign news and foreign correspondents between CBS during World War II and NPR during the Iraq War II. Triangulating quantitative and qualitative methods (content analysis, historical research, and in-depth interviews), this study proposes a model of quality foreign news to help determine what the Murrow tradition means. The model is then used to test if that celebrated tradition lives on in a non-commercial setting at NPR. The two-pronged model pulls together theories of mass communication and historical accounts to assess (1) the quality of the foreign correspondents at the two …

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Improving Healthcare Supply Chains And Decision Making In The Management Of Pharmaceuticals, John Michael Woosley Jan 2009

Improving Healthcare Supply Chains And Decision Making In The Management Of Pharmaceuticals, John Michael Woosley

LSU Doctoral Dissertations

The rising cost of quality healthcare is becoming an increasing concern. A significant part of healthcare cost is the pharmaceutical supply component. Improving healthcare supply chains is critical not only because of the financial magnitude but also because it impacts so many people. Efforts such as this project are essential in understanding the current operations of healthcare pharmacy systems and in offering decision support tools to managers struggling to make the best use of organizational resources. The purpose of this study is to address the objectives of a local hospital that exhibits typical problems in pharmacy supply chain management. We …

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Temperature Impact On Nitrification And Bacterial Growth Kinetics In Acclimating Recirculating Aquaculture Systems Biofilters, Milton Maada-Gomoh Saidu Jan 2009

Temperature Impact On Nitrification And Bacterial Growth Kinetics In Acclimating Recirculating Aquaculture Systems Biofilters, Milton Maada-Gomoh Saidu

LSU Doctoral Dissertations

This project assessed short-term temperature effects on total ammonia nitrogen (TAN) utilization rates in a batch laboratory-scale recirculating system. The tank system was designed for experiments on short term steady state and diurnal temperatures. A set of numerical models was developed to simulate observed results. The performance of the biofilters was determined with three tank replicates at fixed temperatures of 13, 20 and 300C; and at diurnal transient (sinusoidal) temperature regimes of (20 ± 30C; 30 ± 30C). Ammonia utilization rates and biofilter performance for beads acclimated at different temperatures regimes separated and mixed were also determined. Total ammonia utilization …

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Gathering Datasets For Activity Identification, Lorcan Coyle, Juan Ye, Susan Mckeever, Stephen Knox, Mathew Staelber, Simon Dobson, Paddy Nixon Jan 2009

Gathering Datasets For Activity Identification, Lorcan Coyle, Juan Ye, Susan Mckeever, Stephen Knox, Mathew Staelber, Simon Dobson, Paddy Nixon

Conference papers

The area of activity identification is maturing well in the HCI and ubiquitous computing fields. However, although algorithm development is proceedings well, without publicly available datasets on which to compare results it is difficult to consolidate the disparate work being done. This problem exists because realistic datasets describing human activity are difficult and expensive to gather and because there are significant barriers to releasing the data once gathered. We review positive recent development with the release of two high-quality datasets. From our experiences using these datasets we list some recommendations for the gathering and release of future datasets. Finally, we …

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An Integrated Agent-Based Microsimulation Model For Hurricane Evacuation In New Orleans, Wei Liang Jan 2009

An Integrated Agent-Based Microsimulation Model For Hurricane Evacuation In New Orleans, Wei Liang

LSU Doctoral Dissertations

Mass evacuation of urban areas due to hurricanes is a critical problem that requires extensive basic and applied research. Knowing the accurate evacuation time needed for the entire region in advance such that the evacuation order can be issued on a timely basis is crucial for the officials. Microsimulation modeling, which focuses on the characteristics of individual motorists and travel behavior, has been used widely in traffic simulation as it can lead to the most accurate result. However, because detailed driver response modeling and path processing must be incorporated, vehicle-based microscopic models have always been used only to simulate small …

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Factors That Influence Course Completion Of Individuals Enrolled In Craft-Training Courses Offered By A Large Organization Of Member Construction Companies, Alvin James Justelien, Iii Jan 2009

Factors That Influence Course Completion Of Individuals Enrolled In Craft-Training Courses Offered By A Large Organization Of Member Construction Companies, Alvin James Justelien, Iii

LSU Doctoral Dissertations

The construction industry is one of the largest providers of jobs in the United States. Between 2009 and 2013, approximately 20% of the 7.7 million Americans employed in construction related jobs (Bureau of Labor Statistics (BLS), 2009) would be eligible to retire. The industrial construction industry must attract, train, and retain a significant number of people to the construction industry. The primary purpose of this study was to determine the influence of selected personal demographic characteristics and academic behaviors of individuals participating in craft training courses offered by a large organization of member construction companies who successfully completed or left …

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