Physical Sciences and Mathematics Commons^™

Is Green The New Black? Exploring Ethical Fashion Consumption, Chris Gibson, Elyse Stanes

Chris Gibson

No abstract provided.

Youthful Creativity In Regional Australia: Panacea For Unemployment And Out-Migration?, Chris Gibson

Chris Gibson

No abstract provided.

Environmental Sustainability In Practice? A Macro-Scale Profile Of Tourist Accommodation Facilities In Australia's Coastal Zone, Karen Mcnamara, Chris Gibson

Chris Gibson

No abstract provided.

Creativity Without Borders? Rethinking Remoteness And Proximity, Chris Gibson, Susan Luckman, Julie Willoughby-Smith

Chris Gibson

No abstract provided.

Does Your Wireless Lan Have Criminal Intent?, Michael Crowley, Andrew Woodward

Michael Crowley

All of the literature relating to wireless network security has focused on the flaws, newer alternatives and suggestions for securing the network. There is much speculation and anecdotal statements in relation to what can happen if a breach occurs, but this is mostly from a computer security perspective, and mostly expressed in terms of potential for financial loss. This paper examines the potential legal ramifications of failing to properly secure a wireless network. Several scenarios are examined within based on usage of wireless on the various category of attack. Legal opinion, backed up with case law, is provided for each …

Conceptualising Agency In The Lives And Actions Of Rural Young People, E. Robson, S. Bell, Natascha Klocker

Natascha Klocker

This chapter aims to build conceptually upon the accounts of young poopIe's actions in specific rural settings outlined in the proceeding chapters. like the wider body of ongoing reaearh on young people's everyday lives across the world, the foregoing chapters clearly demonstrate how the shift to viewing young people as individuals with the capacity to act and shape their own lives, i.e. to have agency, rather than seeing children simply 'adults in training' (Dunne 1980), passive and innocent dependants, or victims' has become firmly established in children's and youth studies. This volume illustrates some of the many ways in which …

An Example Of 'Thin' Agency: Child Domestic Workers In Tanzania, Natascha Klocker

Natascha Klocker

Child domestic works are children 'under the age of 18 who work in other people's households doing domestic chores, caring for children, and running errands, among other tasks' (UNICEF 1999:2). They can be paid in cash or kind and are employed by (and usually live in the homes of) adults who are not their parents. This chapter focuses on recent research centred on 'employing' three former child domestic workers (aged 14, 16 and 18) to be researchers and to undertake an investigation into CDW in the Iringa Region of Tanzania.

Disk-Outflow Models As Applied To High Mass Star Forming Regions Through Methanol And Water Maser Observations, Hontas Farmer

Hontas F Farmer

As the recent publication by Breen et al (2013) found Class II methanol masers are exclusively associated with high mass star forming regions. Based on the positions of the Class I and II methanol and H2O masers, UC H II regions and 4.5 μm infrared sources, and the center velocities (vLSR) of the Class I methanol and H2O masers, compared to the vLSR of the Class II methanol masers, we propose three disk-outflow models that may be traced by methanol masers. In all three models, we have located the Class II methanol maser near the protostar, and the Class I …

The Santa Clara, 2013-11-14, Santa Clara University

The Santa Clara

No abstract provided.

A General Instrumental Variable Framework For Regression Analysis With Outcome Missing Not At Random, Eric J. Tchetgen Tchetgen, Kathleen Wirth

Harvard University Biostatistics Working Paper Series

No abstract provided.

Alternative Identification And Inference For The Effect Of Treatment On The Treated With An Instrumental Variable, Eric J. Tchetgen Tchetgen, Stijn Vansteelandt

Harvard University Biostatistics Working Paper Series

No abstract provided.

Identification And Estimation Of Survivor Average Causal Effects, Eric J. Tchetgen Tchetgen

Harvard University Biostatistics Working Paper Series

No abstract provided.

N-Body:Many-Body Qm:Qm Vibrational Frequencies: Application To Small Hydrogen-Bonded Clusters, J. Coleman Howard, Gregory S. Tschumper

Chemistry Faculty Research & Creative Works

We present an efficient method for reproducing CCSD(T) (i.e., the coupled-cluster method with single, double and perturbative connected triple excitations) optimized geometries and harmonic vibrational frequencies for molecular clusters with the N-body:Many-body QM:QM technique. In this work, all 1-body through N-body interactions are obtained from CCSD(T) computations, and the higher-order interactions are captured at the MP2 level. The linear expressions from the many-body expansion facilitate a straightforward evaluation of geometrical derivative properties (e.g., gradients and Hessians). For (H₂O)_n clusters (n = 3-7), optimized structures obtained with the 2-body:Many-body CCSD(T):MP2 method are virtually identical to CCSD(T) optimized geometries. …

Examination Of Tyrosine/Adenine Stacking Interactions In Protein Complexes, Kari L. Copeland, Samuel J. Pellock, James R. Cox, Mauricio L. Cafiero, Gregory S. Tschumper

Chemistry Faculty Research & Creative Works

The π-stacking interactions between tyrosine amino acid side chains and adenine-bearing ligands are examined. Crystalline protein structures from the protein data bank (PDB) exhibiting face-to-face tyrosine/adenine arrangements were used to construct 20 unique 4-methylphenol/N9-methyladenine (p-cresol/9MeA) model systems. Full geometry optimization of the 20 crystal structures with the M06-2X density functional theory method identified 11 unique low-energy conformations. CCSD(T) complete basis set (CBS) limit interaction energies were estimated for all of the structures to determine the magnitude of the interaction between the two ring systems. CCSD(T) computations with double-ζ basis sets (e.g., 6-31G*(0.25) and aug-cc-pVDZ) indicate that the MP2 method overbinds …

Investigating The In Vitro Oxidative Folding Pathways Of Bovine Pancreatic Trypsin Inhibitor (Bpti), Yingsong Wang

FIU Electronic Theses and Dissertations

The oxidative folding pathway of the disulfide containing protein bovine pancreatic trypsin inhibitor (BPTI) was one of the first to be elucidated and has served as a basis for understanding the folding pathways of other proteins. During the oxidative folding of reduced BPTI, two intermediates (N' and N*) accumulate in significant amounts and act as kinetic traps. Both N' and N* bury their two remaining free thiols in their hydrophobic cores, which inhibits further oxidation. Historically, the rate limiting step was considered to be the intramolecular rearrangements of N' and N* to another intermediate with two free thiols, N^{SH …}

A Generalized Adaptive Mathematical Morphological Filter For Lidar Data, Zheng Cui

FIU Electronic Theses and Dissertations

Airborne Light Detection and Ranging (LIDAR) technology has become the primary method to derive high-resolution Digital Terrain Models (DTMs), which are essential for studying Earth’s surface processes, such as flooding and landslides. The critical step in generating a DTM is to separate ground and non-ground measurements in a voluminous point LIDAR dataset, using a filter, because the DTM is created by interpolating ground points. As one of widely used filtering methods, the progressive morphological (PM) filter has the advantages of classifying the LIDAR data at the point level, a linear computational complexity, and preserving the geometric shapes of terrain features. …

Improved Dynamic Headspace Sampling And Detection Using Capillary Microextraction Of Volatiles Coupled To Gas Chromatography Mass Spectrometry, Wen Fan

FIU Electronic Theses and Dissertations

Sampling and preconcentration techniques play a critical role in headspace analysis in analytical chemistry. My dissertation presents a novel sampling design, capillary microextraction of volatiles (CMV), that improves the preconcentration of volatiles and semivolatiles in a headspace with high throughput, near quantitative analysis, high recovery and unambiguous identification of compounds when coupled to mass spectrometry. The CMV devices use sol-gel polydimethylsiloxane (PDMS) coated microglass fibers as the sampling/preconcentration sorbent when these fibers are stacked into open-ended capillary tubes. The design allows for dynamic headspace sampling by connecting the device to a hand-held vacuum pump. The inexpensive device can be fitted …

Rapid Inline Derivatization Of Primary And Secondary Amine Containing Drugs By Capillary Electrophoresis With Laser-Induced Fluorescence, Britt E. Turnquest

FIU Electronic Theses and Dissertations

Despite the ongoing “war on drugs” the seizure rates for phenethylamines and their analogues have been steadily increasing over the years. The illicit manufacture of these compounds has become big business all over the world making it all the more attractive to the inexperienced “cook”. However, as a result, the samples produced are more susceptible to contamination with reactionary byproducts and leftover reagents. These impurities are useful in the analysis of seized drugs as their identities can help to determine the synthetic pathway used to make these drugs and thus, the provenance of these analytes. In the present work two …

Cosm News, Georgia Southern University

College of Science and Mathematics News (2012-2019)

• Dr. Apanaskevich’s illustration used on cover of the Journal of Entomology

Skill Assessment Of Multiple Models In The Chesapeake Bay, I. D. Irby, M. Friedrichs, C. Feng, C. Friedrichs

Presentations

No abstract provided.

Practical Guidelines For The Comprehensive Analysis Of Chip-Seq Data, Timonthy Bailey, Pawel Krajewski, Istvan Ladunga, Celine Lefebvre, Qunhua Li, Tao Liu, Pedro Madrigal, Cenny Taslim, Jie Zhang

Department of Statistics: Faculty Publications

Mapping the chromosomal locations of transcription factors, nucleosomes, histone modifications, chromatin remodeling enzymes, chaperones, and polymerases is one of the key tasks of modern biology, as evidenced by the Encyclopedia of DNA Elements (ENCODE) Project. To this end, chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) is the standard methodology. Mapping such protein-DNA interactions in vivo using ChIP-seq presents multiple challenges not only in sample preparation and sequencing but also for computational analysis. Here, we present step-by-step guidelines for the computational analysis of ChIP-seq data. We address all the major steps in the analysis of ChIP-seq data: sequencing depth selection, quality …

Gathering "Wild" Food In The City: Rethinking The Role Of Foraging In Urban Ecosystem Planning And Management, Rebecca J. Mclain, Patrick T. Hurley, Marla R. Emery, Melissa R. Poe

Environment and Sustainability Faculty Publications

Recent “green” planning initiatives envision food production, including urban agriculture and livestock production, as desirable elements of sustainable cities. We use an integrated urban political ecology and human–plant geographies framework to explore how foraging for “wild” foods in cities, a subversive practice that challenges prevailing views about the roles of humans in urban green spaces, has potential to also support sustainability goals. Drawing on research from Baltimore, New York City, Philadelphia, and Seattle, we show that foraging is a vibrant and ongoing practice among diverse urban residents in the USA. At the same time, as reflected in regulations, planning practices, …

Network Construction And Graph Theoretical Analysis Of Functional Language Networks In Pediatric Epilepsy, Anas Salah Eddin

FIU Electronic Theses and Dissertations

This dissertation introduces a new approach for assessing the effects of pediatric epilepsy on the language connectome. Two novel data-driven network construction approaches are presented. These methods rely on connecting different brain regions using either extent or intensity of language related activations as identified by independent component analysis of fMRI data. An auditory description decision task (ADDT) paradigm was used to activate the language network for 29 patients and 30 controls recruited from three major pediatric hospitals. Empirical evaluations illustrated that pediatric epilepsy can cause, or is associated with, a network efficiency reduction. Patients showed a propensity to inefficiently employ …

Soil Building Processes In Reconstructed Tree Islands In The Everglades, Florida, Andres F. Rodriguez

FIU Electronic Theses and Dissertations

Soil building processes were studied in reconstructed tree islands in the Loxahatchee Impoundment Landscape Assessment, Florida. Soil building was evaluated by measuring litter production, litter decomposition, soil accretion, and changes in soil elevation under different hydrologic conditions, and by determining physicochemical characteristics of newly accreted soils. Tree islands showed higher litter production and soil accretion but a larger loss of soil elevation caused by subsidence at higher elevations and shorter inundation periods. Newly accreted soils exhibited higher nutrient concentrations, and organic matter (OM) than older soils. Most of the soil phosphorus was stored in the organic fraction. A positive correlation …

The Investigation Of Photocatalysts And Iron Based Materials In The Oxidation And The Adsorption Of Toxic Organic And Chromium Materials, Wenjun Jiang

FIU Electronic Theses and Dissertations

The presences of heavy metals, organic contaminants and natural toxins in natural water bodies pose a serious threat to the environment and the health of living organisms. Therefore, there is a critical need to identify sustainable and environmentally friendly water treatment processes. In this dissertation, I focus on the fundamental studies of advanced oxidation processes and magnetic nano-materials as promising new technologies for water treatments.

Advanced oxidation processes employ reactive oxygen species (ROS) which can lead to the mineralization of a number of pollutants and toxins. The rates of formation, steady-state concentrations, and kinetic parameters of hydroxyl radical and singlet …

Statistical Models For Predicting College Success, Yelen Nunez

FIU Electronic Theses and Dissertations

Colleges base their admission decisions on a number of factors to determine which applicants have the potential to succeed. This study utilized data for students that graduated from Florida International University between 2006 and 2012. Two models were developed (one using SAT as the principal explanatory variable and the other using ACT as the principal explanatory variable) to predict college success, measured using the student’s college grade point average at graduation. Some of the other factors that were used to make these predictions were high school performance, socioeconomic status, major, gender, and ethnicity. The model using ACT had a higher …

U.S. Drought Monitor, November 12, 2013, David Simeral

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 12, 2013 (11/12/13) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

On The Causal Interpretation Of Race In Regressions Adjusting For Confounding And Mediating Variables, Tyler J. Vanderweele, Whitney Robinson

Harvard University Biostatistics Working Paper Series

We consider different possible interpretations of the “effect of race” when regressions are run with race as an exposure variable, controlling also for various confounding and mediating variables. When adjustment is made for socioeconomic status early in a person's life, we discuss under what contexts the regression coefficients for race can be interpreted as corresponding to the extent to which a racial disparity would remain if various socioeconomic distributions early in life across racial groups could be equalized. When adjustment is also made for adult socioeconomic status, we note how the overall disparity can be decomposed into the portion that …

A Unification Of Mediation And Interaction, Tyler J. Vanderweele

Harvard University Biostatistics Working Paper Series

We show that the overall effect of an exposure on an outcome, in the presence of a mediator with which the exposure may interact, can be decomposed into four components: (i) the effect of the exposure in the absence of the mediator, (ii) the interactive effect when the mediator is left to what is would be in the absence of exposure, (iii) a mediated interaction and (iv) a pure mediated effect. These four components respectively correspond to the portion of the effect that is due to neither mediation nor interaction, to just interaction (but not mediation), to both mediation and …

Elemental Analysis And Forensic Comparison Of Soils By Laser-Induced Breakdown Spectroscopy (Libs) And Laser Ablation Inductively Coupled Plasma Mass Spectrometry (La-Icp-Ms), Sarah C. Jantzi

FIU Electronic Theses and Dissertations

The elemental analysis of soil is useful in forensic and environmental sciences. Methods were developed and optimized for two laser-based multi-element analysis techniques: laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) and laser-induced breakdown spectroscopy (LIBS). This work represents the first use of a 266 nm laser for forensic soil analysis by LIBS.

Sample preparation methods were developed and optimized for a variety of sample types, including pellets for large bulk soil specimens (470 mg) and sediment-laden filters (47 mg), and tape-mounting for small transfer evidence specimens (10 mg). Analytical performance for sediment filter pellets and tape-mounted soils was similar …