801 Works

Fine-grained visual comparisons

Aron Yingbo Yu
Beyond recognizing objects, a computer vision system ought to be able to compare them. A promising way to represent visual comparisons is through attributes, which are mid-level properties that appear across category boundaries. The ability to compare attributes opens up new opportunities in areas such as online shopping, object recognition, and human biometrics, where a relative decision is often more informative than its binary counterpart. For example, given two human faces, a decision that one...

Natural history, behavior, and bacterial microbiomes of a socially polymorphic spider, Anelosimus studiosus

Emma Irene Dietrich
Anelosimus studiosus is a unique spider; throughout its range from Argentina to New England, most adult females are solitary and subsocial (provide maternal care). However, in the northernmost parts of its range in the United States, adult females sometimes live in cooperative aggregations. While this social polymorphism has been well defined in specific regions of A. studiosus’ range, it is not so thoroughly described elsewhere. Therefore, I first describe the aggregative behavior, natural history, and...

Weak Order and Disorder of Quantum States Invariant Under Onsite Action by an Arbitrary Finite Group on a Spin Chain

Maxim Zelenko
In his paper “Constraints on order and disorder parameters in quantum spin chains,” Michael Levin derived general constraints on order and disorder parameters in Ising symmetric quantum spin chains. Levin’s main result in his paper was a theorem showing that in a circular spin chain, any local Hamiltonian that has a non-degenerate ground state and is translationally invariant and Ising symmetric must at least have either a nonzero order parameter or a nonzero disorder parameter....

Membrane fouling : mechanisms, modeling, and mitigation

Alon Yeshayahu Kirschner
Membrane systems are used for water treatment in many industries due to their small footprint, low chemical and energy use, and ease of operation. However, membrane fouling remains a challenge, especially for highly concentrated feeds. Fouling increases hydraulic resistance, lowers water permeance and increases energy consumption. Fouled membranes require expensive cleaning or replacement, increasing operating costs. This study focuses on understanding fouling mechanisms in constant flux crossflow operation, commonly used in industry, and on development...

Thin film growth and deposition of functional perovskite oxides

Bryce Isaiah Edmondson &
The research documented in this work focuses on the growth and deposition of thin film perovskite oxides for their electronic and photonic functionalities. The ever increasing demand for faster electronic devices, particularly in the realm of micro and nanoelectronics, is requiring diversification of the materials used in typical semiconductor-based integrated circuits. Metal oxides, particularly those in the perovskite family of materials, offers a wide range of functionalities that can both increase device performance and add...

The Plastered Skulls

Denise Schmandt-Besserat
‘Ain Ghazal is a Neolithic site located near Amman, Jordan. It was excavated between 1982 and 1998 by an American-Jordanian team directed by Gary O. Rollefson, Whitman College, Walla Walla, Wa. and Zeidan Kafafi, the University of Yarmouk at Irbid, Jordan. ‘Ain Ghazal was first settled about 7250 B.C., during the so-called Pre-Pottery Neolithic B (PPNB) period. In a matter of a few centuries the village of stone houses had spread over 30 acres along...

The effect of dispersal behavior on stability in populations, communities, and ecosystems

Robert Andrew Deans &
Habitat choice, when organisms move among habitat patches in a directed fashion based on environmental cues, is an underappreciated force in Ecology. Theoretical work suggests that such choice behavior might be a potent source of stability in populations, communities, and ecosystems. I tested the effects of dispersal behavior on stability with a series of mesocosm experiments at each of these scales. In populations of snails with stochastic disturbance, I found that movement among patches was...

Viage y naufragios del Macedonio de Juan Baptista de Loyola : a critical edition

Juan Bautista De Loyola &
The text of Juan Bautista de Loyola's Viage y naufragios del Macedonio has been reproduced from photostats of a well preserved copy of the novel in the Library of the Hispanic Society of America. Evident errors as well as occasional imperfections have been indicated in both the text and footnotes in the conventional manner. The sixteenth-century spelling has been retained intact, but the punctuation and capitalization have been modernized, the long sentences have been shortened,...

Parental psychopathology, parental anxiety, family functioning and childhood anxiety treatment outcome in an enhanced cognitive-behavioral therapy intervention with parent training component

Annette Lynn Cantu &
This study aimed to examine the association between parental and familial factors and child treatment outcome during a child-focused anxiety disorder treatment with parental training component. The sample included in this study consisted of 66 youth, ages 7-17, diagnosed with Generalized Anxiety Disorder, Social Phobia, or Separation Anxiety Disorder, along with at least one participating parent. Therapists were assigned to both parent and child in an enhanced CBT program based in the Texas Child Study...

Studies of intense laser driven cluster explosions

Matthias Hohenberger
Recent studies of the explosions of atomic clusters driven by high intensity femtosecond laser pulses have shown that at a sufficiently high intensity and fast laser rise time, the clusters can be stripped of all the electrons. The subsequent explosion is caused by the mutual Coulomb repulsion of the remaining ions. Assuming that the sudden inner cluster ionization approximation (SICI) is applicable, at the temporal onset of the Coulomb explosion all of the relevant electrons...

Late Cretaceous-Cenozoic tectonics and sedimentation in southern Central America : Costa Rica and Panama

This thesis presents three integrated studies of Upper Cretaceous to Recent tectonics and sedimentation in southern Central America (Panama and Costa Rica). A short concluding Chapter presents my evaluation of the hydrocarbon potential of Panama and Costa Rica. The main sources of data used in the thesis include: 1) multi-channel seismic data, well data, and field data donated by industry and the Panama government for use in this study; and 2) field data collected in...

Prediction of microemulsion phase behavior from surfactant and co-solvent structures

Leonard Yujya Chang
Structure-property models were developed to predict the optimum salinity, optimum solubilization ratio, and the aqueous stability limit from the molecular structures of surfactants and co-solvents used for enhanced oil recovery. The models are sufficiently accurate to provide a useful guide to experimental testing programs for the development of chemical formulations for enhanced oil recovery and other similar applications requiring low interfacial tension. This is the first time a structure-property model has been developed to predict...

Experimental investigation of low interfacial tension displacements in oil-wet, fractured micromodels

Lucas Mejia &
The objective of this work was to determine, using a microfluidics platform, if surfactants that reduce interfacial tension would produce oil from oil-wet, fractured systems in both static conditions (where no injection was involved) and in dynamic conditions (where fluid was injected into the system). The hypothesis was that as surfactants reduce interfacial tension between oil and water in an oil-wet, fractured porous medium, forces of very small magnitude (hydrostatic force created by a brine...

Experimental investigation of surfactant flooding in fractured limestones

Miguel Mejia &
Carbonates are important candidates for enhanced oil recovery, but recovering oil from oil-wet fractured carbonate reservoirs is challenging. Waterflooding bypasses the rock matrix and recovers little oil. Chemical enhanced oil recovery using surfactants increases oil recovery by lowering the interfacial tension, changing the wettability, and generating viscous microemulsions that improve mobility control. Seven Texas Cream Limestone cores with a permeability of 15-30 md were fractured and saturated with 100% oil. The cores were aged for...

Parallel hp adaptive finite element analysis for viscous incompressible flow problems

Abani Kumar Patra

\"Notorious women\" : women writers and the nouvelle galante, 1663-1708

Helen Michelle Prud'homme

Rumors and politics in Haiti

Glen Anthony Perice

Relativism and the critique of reason

Emrys Westacott

On the influence of Magna Carta and other cultural relics

Zachary Elkins, Tom Ginsburg & James Melton
Magna Carta’s status as a touchstone of modern thinking about the rule of law rests on several well-known myths. This article evaluates the influence of Magna Carta on modern constitutions, both in termsof formation as well as content. The analysis confirms that Magna Carta’s relevance is, if anything, onthe rise, even if the causal chains linking it to current developments are weak-linked and distant. Wespeculate on the mysterious processes that produce influence among legal texts,...

Evaluation of film cooling superposition method on the suction side of a blade model

Christopher Yoon &
Film cooling is often used for turbine airfoil cooling, and there are numerous studies of the performance of a single row of holes. Typically, blades and vanes in gas turbine engines have multiple rows of holes that interact. Consequently, there is a need to develop techniques to predict film cooling performance with multiple rows of holes. One of the method is to superposition single row cooling effectiveness to predict combined effectiveness. Although there have been...

Electron transport in doped semiconductor nanocrystals

Corey Michael Staller
Electron transport through semiconductor nanocrystal (NC) systems is almost entirely understood by analogs to bulk science. The physics governing electron transport within NCs is entirely analogous to bulk semiconductors with extreme spatial constraints. In contrast, the physics of electrons conducting between NCs is understood through the physics of amorphous materials, granular metals, or bulk semiconductors, depending on the structure of the NC ensemble. Herein is an investigation of how dopant distribution engineering can be utilized...

Texas Adopted Textbook List 2018

List of textbooks adopted by the State of Texas for use in K-12 public schools.

Preventing School Dropout With Secondary Students

J. Wexler, S. Vaughn, G. Roberts, N. Pyle, A-M. Fall, J. Williams & L. Sayre
Council for Exceptional Children (April 2011) Jade Wexler, Sharon Vaughn, Greg Roberts, Nicole Pyle, Anna-Mária Fall, Jacob Williams, Leah Sayre: Preventing School Dropout With Secondary Students

Interactions and influences of savanna fire across multiple extents

Alexander William Marden &
The spatiotemporal interactions and feedbacks of fire and vegetation in savanna systems are a key component of savanna structure, function, and can give insight into woody plant encroachment. The increased accessibility to remote sensing data and software via Google Earth Engine for fire analysis facilitates integrated savanna assessments for local-to-regional analyses and management. This study assesses spatial and temporal fire dynamics in the Botswana Kalahari at different extents and resolutions to test the hypothesis that...

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  • 2019

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