Digital Commons Network^™

Documenting The Origin Of Compositional Diversity Of Subduction Zone Magmatism, Alicudi, Aeolian Arc (Southern Tyrrhenian Sea, Italy) Using In Situ Plagioclase Data, Rachel Hunt

All Master's Theses

Processes that generate magma compositional diversity are important to document because composition affects degree of explosivity, which impacts hazard mitigation. Magnesium to silicon rich magmas are produced by processes such as magma recharge, assimilation, and fractional crystallization (RAFC) that occur in subvolcanic magma chamber(s). This study evaluates how magma chamber processes contribute to compositional diversity at Alicudi Volcano, Italy. Analytical and petrographic data from ten samples that span the subaerial history include whole rock major and trace elements and strontium/neodymium isotopes, and plagioclase textural types, major and trace elements, and strontium isotopes; numerical modeling was also conducted. Integration of these …

Documenting Magma Evolution Of The Fossa Delle Felci (Salina Island, South Tyrrhenian Sea) By Integrating In Situ Plagioclase Data With Quantitative Modeling, Aaron Mayfield

All Master's Theses

Compositional diversity occurs via processes dominated by recharge, assimilation and fractional crystallization (RAFC), quantification of which can provide insights into eruption catalysts, and therefore assist in hazard mitigation. This study evaluates the relative roles of RAFC processes in Fossa delle Felci (Salina Island, Italy) magmas, which span the basalt to dacite range (52-65 wt% SiO2). Integration of petrographic, whole rock, and in situ plagioclase data with quantitative magma chamber models suggests differentiation dominated by fractional crystallization and magma recharge/mixing in reservoirs located at different crustal levels. At ~12 km depth, magma evolved through crystallization of a pyroxene dominated assemblage; plagioclase …

Petrogenetic Relationship Of The Postcaldera Eruptions Of Mount Mazama, Crater Lake, Oregon; Evolution Of A Sub-Volcanic Magma Chamber Following A Large Silicic Eruption, Michelle Leanna Tebbe

All Master's Theses

Mount Mazama is the volcanic edifice that cataclysmically erupted ~503 km of relatively homogeneous rhyodacite lava ~ 7,700 years ago, forming the caldera known as Crater Lake. Within a few hundred years, andesitic eruptions built three distinct volcanic edifices on the floor of Crater Lake; ~ 3000 years later, rhyodacite eruptions formed a dome (Bacon et al., 2002). How magmatic systems evolve following a shallow, relatively large silicic eruption is the focus of this study. In situ geochemical analysis coupled with high-resolution textural images of plagioclase crystals in the four postcaldera volcanic edifices were used to identify distinct crystal populations …

A Carathéodory Theorem For The Bidisk Via Hilbert Space Methods, Jim Agler, John E. Mccarthy, N J. Young

Mathematics Faculty Research

If φ is an analytic function bounded by 1 on the bidisk D 2 and τ∈∂(D 2 ) is a point at which φ has an angular gradient ∇φ(τ) then ∇φ(λ)→∇φ(τ) as λ → τ nontangentially in D 2 . This is an analog for the bidisk of a classical theorem of Carathéodory for the disk. For φ as above, if τ∈∂(D 2 ) is such that the lim inf of (1−|φ(λ)|)/(1−∥λ∥) as λ → τ is finite then the directional derivative D−δφτ) exists for all appropriate directions δ∈C 2 . Moreover, one can associate with φ and τ an …

Amino Acid Repeats Cause Extraordinary Coding Sequence Variation In The Social Amoeba Dictyostelium Discoideum, Clea Scala, Xiangjun Tian, Natasha J. Mehdiabadi, Margaret H. Smith, Gerda Saxer, Katie Stephens, Prince Buzombo, Joan E. Strassmann, David C. Queller

Biology Faculty Research

Protein sequences are normally the most conserved elements of genomes owing to purifying selection to maintain their functions. We document an extraordinary amount of within-species protein sequence variation in the model eukaryote Dictyostelium discoideum stemming from triplet DNA repeats coding for long strings of single amino acids. D. discoideum has a very large number of such strings, many of which are polyglutamine repeats, the same sequence that causes various human neurological disorders in humans, like Huntington’s disease. We show here that D. discoideum coding repeat loci are highly variable among individuals, making D. discoideum a candidate for the most variable …

Improving Thermodynamic Models Of Transcription By Combining Chip And Expression Measurements Of Synthetic Promoters, Robert D. Zeigler

All Theses and Dissertations (ETDs)

Regulation of gene expression is a fundamental process in biology. Accurate mathematical models of the relationship between regulatory sequence and observed expression would advance our understanding of biology.

I developed ReLoS, a regulatory logic simulator, to explore mathematical frameworks for describing the relationship between regulatory sequence and observed expression and to explore methods of learning combinatorial regulatory rules from expression data. ReLoS is a flexible simulator allowing a variety of formalisms to be applied. ReLoS was used to explore the question of how complex rules of combinatorial transcriptional regulation must be to explain the complexity of transcriptional regulation observed in …

Sustainable Management Of The Historic Environment Resource In Upland Peat: A Study From Exmoor, Heather Joy Davies

School of Geography, Earth and Environmental Sciences Theses

UK uplands preserve a rich history of human inhabitation and environmental change through standing monuments, archaeological sites, and within peat deposits. Palaeoenvironmental remains within peat can be used to reconstruct environmental histories throughout the Holocene. Small mires in varied topographic locations can allow detailed local landscape reconstruction, setting archaeological sites in environmental context, or building up a picture of the mosaic of changing landscapes through time. Recent moves towards assessing the ecosystem services provided by different landscapes mean that, to make a case for preserving upland peatlands for the palaeoenvironmental remains they preserve, we must be able to demonstrate their …

Airlift Column Photobioreactors For Porphyridium Sp. Culturing: Part Ii. Verification Of Dynamic Growth Rate Model For Reactor Performance Evaluation, Hu Ping Luo, Muthanna H. Al-Dahhan

Chemical and Biochemical Engineering Faculty Research & Creative Works

Dynamic Growth Rate Model Has Been Developed to Quantify the Impact of Hydrodynamics on the Growth of Photosynthetic Microorganisms and to Predict the Photobioreactor Performance. Rigorous Verification of Such Reactor Models, However, is Rare in the Literature. in This Part of Work, Verification of a Dynamic Growth Rate Model Developed in Luo and Al-Dahhan (2004) [Biotech Bioeng 85(4): 382-393.] Was Attempted using the Experimental Results Reported in Part I of This Work and Results from Literature. the Irradiance Distribution Inside the Studied Reactor Was Also Measured at Different Optical Densities and Successfully Correlated by the Lambert-Beer Law. When Reliable Hydrodynamic …

Jiann Ping Hsu And Karl E. Peace Art Collection, Zach S. Henderson Library Special Collections

Finding Aids

This collection consists of artwork collected and created by Jiann Ping Hsu and Karl E. Peace. Materials are undated and include album leaves, printed posters, written scrolls, and hand-drawn illustrations. Some materials contain only written content and not imagery.

Find this collection in the University Libraries' catalog.

Separation And Liquid Chromatography Using A Single Carbon Nanotube, Riju Singhal, Vadym Mochalin, Maria R. Lukatskaya, Gary Friedman, Yury G. Gogotsi

Chemistry Faculty Research & Creative Works

Use of a single template-grown carbon nanotube as a separation column to separate attoliter volumes of binary mixtures of fluorescent dyes has been demonstrated. The cylindrical nanotube walls are used as stationary phase and the surface area is increased by growing smaller multi-walled carbon nanotubes within the larger nanotube column. Liquid-liquid extraction is performed to separate selectively soluble solutes in a solvent, and chromatographic separation is demonstrated using thin, long nanotubes coated inside with iron oxide nanoparticles. The setup is also used to determine the diffusion coefficient of a solute at the sub-micrometer scale. This study opens avenues for analytical …

Shining A Hilbertian Lamp On The Bidisk, John E. Mccarthy

Mathematics Faculty Research

Four lectures on how different aspects of the function theory of the bidisk can be illuminated by using Hilbert spaces and operator theory.

Stable Tameness Of Two-Dimensional Polynomial Automorphisms Over A Regular Ring, Joost Berson, Arno Van Den Essen, David Wright

Mathematics Faculty Research

In this paper it is established that all two-dimensional polynomial automorphisms over a regular ring R are stably tame. This results from the main theorem of this paper, which asserts that an automorphism in any dimension n is stably tame if said condition holds point-wise over Spec R. A key element in the proof is a theorem which yields the following corollary: over an Artinian ring A all two-dimensional polynomial automorphisms having Jacobian determinant one are stably tame, and are tame if A is a Q-algebra. Another crucial ingredient, of interest in itself, is that stable tameness is a local …

Educating And Communicating Through Sociolinguistic Registers: Adolescent Client, Chanaé Jones, Brittany Mayer

Occupational Therapy Capstones

PROBLEM: Currently tests such as the SAT (Scholastic Assessment Test) and ACT (American College Testing), as well as employment use what is identified as formal sociolinguistic register (Joos, 1967 & Payne, 2005). Payne (2005) built upon Joos’ (1967) definition and presented five registers: frozen, formal, consultative, casual, and intimates. Formal register is defined as; one-way participation, no interruption such as is seen with introductions between stangers. Technical vocabulary; “fuzzy semantics" or exact definitions are important. Montano-Harmon (1991) found that many minority and poor students do not have access to formal register at home but rather tend to rely primarily in …

Content Contribution In Social Media: The Case Of Youtube, Qian Tang, Bin Gu, Andrew B. Whinston

Research Collection School Of Computing and Information Systems

Social media allows individuals and businesses to contribute contents for public viewing. However, little is known about the underlying incentives that why content providers derive utilities from such activities. In this study, we build a dynamic structural model to recover the utility function for content providers. Our model distinguishes short-term payoffs based on ad revenue sharing from long-term payoffs driven by content providers' reputation. The model was estimated using a panel data of 914 top 1000 video providers on You Tube from Jun 7th, 2010, to Aug 7th, 2011 since top providers are more likely to be encouraged by these …

(2012) Economic Crises And Education: Some Philosophical Reflections, Laurance J. Splitter

Collected Papers of Laurance J. Splitter

The ongoing series of global financial crises offers some important philosophical lessons and insights for educators. The epistemological lesson is stark: we should beware of certainty and all claims to it. Were the disposition of generic skepticism in place at all levels of schooling, then the intellectual rigidity that has characterized economics as a “discipline” would be balanced by demands to consider possible alternatives. The ethical lessons to be learned include ensuring that ethics, as a form of rigorous but openended inquiry into key questions about the kind of world in which we want to live, be included in every …

Estimation Of Gap Acceptance Parameters For Hcm 2010 Roundabout Capacity Model Applications, A. Gazzarri, Michael T. Martello, Antonio Pratelli, Reginald R. Souleyrette

Civil Engineering Faculty Publications

This paper deals with the field data observation and successive application of estimation procedures in order to estimate follow-up headway and critical headway at roundabouts. Average follow-up and average critical headway are two critical parameters in the new roundabout capacity model presented in the 2010 edition of the Highway Capacity Manual (HCM). The HCM 2010 capacity model was developed as an exponential regression model with parameter estimates based on gap acceptance theory. Gap acceptance models are strongly affected by driver behaviour and local habits. Follow-up headways can be field measured, while critical headway cannot be obtained directly. The paper mainly …

The Past, Present, And Future Of South Africa's Patent System, James T. Pechacek

Cybaris®

No abstract provided.

Verifying Harder's Conjecture For Classical And Siegel Modular Forms, Davia Sulon

Honors Theses

A conjecture by Harder shows a surprising congruence between the coefficients of “classical” modular forms and the Hecke eigenvalues of corresponding Siegel modular forms, contigent upon “large primes” dividing the critical values of the given classical modular form.

Harder’s Conjecture has already been verified for one-dimensional spaces of classical and Siegel modular forms (along with some two-dimensional cases), and for primes p 37. We verify the conjecture for higher-dimensional spaces, and up to a comparable prime p.

Values Of Exemplary Jesuit College Graduates, Rev. Patrick Lynch S.J., Gordon Meyer Ph.D., Pat Mixak Ph.D., Christie Adamczak, Kevin M. Scott

Jesuit Higher Education: A Journal

What values do undergraduates adopt and internalize as a result of their college experiences at a Catholic Jesuit college/university? In an attempt to answer this question, the authors chose 21 exemplary graduates from 2000-2007 at a Catholic, Jesuit college in the northeastern part of the United States and conducted a ten question intensive interview with each of them. After transcribing and coding the interviews, it was discovered that these graduates had a strong grasp of such Jesuit ideals as “men and women for others,” “educating the whole person,” “cura personalis,” and “magis,” but apparently a weaker grasp of the more …

Unitary Equivalence To A Truncated Toeplitz Operator: Analytic Symbols, William T. Ross, Stephan Ramon Garcia, Daniel E. Poore

Department of Math & Statistics Faculty Publications

Unlike Toeplitz operators on H², truncated Toeplitz operators do not have a natural matricial characterization. Consequently, these operators are difficult to study numerically. In this note we provide criteria for a matrix with distinct eigenvalues to be unitarily equivalent to a truncated Toeplitz operator having an analytic symbol. This test is constructive and we illustrate it with several examples. As a byproduct, we also prove that every complex symmetric operator on a Hilbert space of dimension < 3 is unitarily equivalent to a direct sum of truncated Toeplitz operators.

More Money, More Problems: The Bitcoin Virtual Currency And The Legal Problems That Face It, Daniel Smith

Journal of Law, Technology, & the Internet

No abstract provided.

Saving The Spotify Revolution: Recalibrating The Power Imbalance In Digital Copyright, E. Jordan Teague

Journal of Law, Technology, & the Internet

No abstract provided.

Promoting Mitochondrial Biogenesis With The Sirti Activator Srt1720 To Improve Mitochondrial And Renal Function After Acute Kidney Injury, Jason Allen Funk

MUSC Theses and Dissertations

Mitochondrial dysfunction is a primary pathological consequence of acute kidney injury (AKI). Induction of mitochondrial biogenesis via the nuclear coactivator of transcription PPARγ-coactivator-1α (PGC-1α), the master regulator of mitochondrial biogenesis, rescues mitochondrial function in renal cells after oxidant injury. The primary goal of this project was to evaluate the recovery of mitochondrial function after in vivo AKI, and to determine the influence of mitochondrial biogenesis during the repair process. Deacetylation of PGC-1α by the class III HDAC SIRT1 produces a more active form of the protein and stimulates mitochondrial biogenesis. The potent SIRT1 activator SRT1720 induced deacetylation of PGC-1α, increased …

Great Lakes Tributary Phosphorus Bioavailability, Renn Sterling Lambert

Dissertations, Master's Theses and Master's Reports - Open

Information on phosphorus bioavailability can provide water quality managers with the support required to target point source and watershed loads contributing most significantly to water quality conditions. This study presents results from a limited sampling program focusing on the five largest sources of total phosphorus to the U.S. waters of the Great Lakes. The work provides validation of the utility of a bioavailability-based approach, confirming that the method is robust and repeatable. Chemical surrogates for bioavailability were shown to hold promise, however further research is needed to address site-to-site and seasonal variability before a universal relationship can be accepted. Recent …

Algorithms For Spacecraft Formation Flying Navigation Based On Wireless Positioning System Measurements, Shu Ting Goh

Dissertations, Master's Theses and Master's Reports - Open

Spacecraft formation flying navigation continues to receive a great deal of interest. The research presented in this dissertation focuses on developing methods for estimating spacecraft absolute and relative positions, assuming measurements of only relative positions using wireless sensors. The implementation of the extended Kalman filter to the spacecraft formation navigation problem results in high estimation errors and instabilities in state estimation at times. This is due tp the high nonlinearities in the system dynamic model. Several approaches are attempted in this dissertation aiming at increasing the estimation stability and improving the estimation accuracy.

A differential geometric filter is implemented for …

A New Control System For Left Ventricular Assist Devices Based On Patient-Specific Physiological Demand, George Faragallah, Yu Wan, Eduardo Divo, Marwan Simaan

Mechanical Engineering - Daytona Beach

A left ventricular assist device (LVAD) is a mechanical pump that helps patients with a heart failure (HF) condition. This pump works in parallel to the ailing heart and provides a continuous flow from the weak left ventricle to the ascending aorta. The current supplied to the pump motor controls the flow of blood. A new feedback control system is developed to automatically adjust the pump motor current to provide the blood flow required by the level of activity of the patient. The systemic vascular resistance (RS) is the only undeterministic variable parameter in a patient-specific model and also a …

Counting Sibling Portraits In Laminations Of The Unit Disk, Joseph W. Olson, John C. Mayer, Luka Mernik

Inquiro (undergraduate research journal)

pp. 57-63

Development Of Dot Array Biosensor Using Dip-Pen Nanolithography Of Polyacrylamide Ink, Aditi R. Naik, Ethan J. White, Aaron Catledge

Inquiro (undergraduate research journal)

pp. 48-53

Progress Towards A Facile Synthesis Of A Gadolinium (Iii) Octabrominated Porphyrin, Tseng Xiong

The Corinthian

Towards preparing porphyrin complexes that combine contrast agent and photodynamic therapy capabilities at tumor sites, the Gd(III) porphyrin derivative of the octabrominated meso-tetrakis(N-methyl-4-pyridyl)porphyrin, GdTMPyPBr8 5+ was synthesized by refluxing Gd(III) ion with H3TMPyPBr8 5+ at pH 7. The metallocomplex was characterized by UV-visible spectroscopy and showed a Soret band shift from 503 nm to 463 nm at pH 7, suggesting that metal insertion of Gd(III) into the core of porphyrin ligand had occurred. However, synthesis of the Gd(III) complex required high temperatures and long reaction times. To circumvent these harsh conditions, the lithium porphyrin derivative was first prepared and subsequently …

The Adam Walsh Child Protection And Safety Act: Legal And Psychological Aspects Of The New Civil Commitment Law For Federal Civil Commitment Law For Federal Sex Offenders , John Fabian

Cleveland State Law Review

The Adam Walsh Act (AWA) became law on July 27, 2006, and is the most expansive and punitive sex offender law ever initiated by the federal government. One aspect of the statute, and the topic of this article, is the civil commitment of federal sex offenders. The AWA civil commitment law has its roots in prior U.S. Supreme Court cases including Kansas v. Hendricks and Kansas v. Crane. While the federal commitment statute is similar to traditional state commitment laws, the AWA does not provide for a finding of "likely" to commit sex offenses. Rather, the statute defines a "sexually …