Physical Sciences and Mathematics Commons^™

A Peculiar Institution Indeed: The Humanity Of Indian Slave Owners, Brennan King, David Hertzel

SWOSU Journal of Undergraduate Research

This project was undertaken to better understand the rift between the understandings of how slaves were treated in Indian Territory versus how they were treated in the Deep South. In order to complete this project research was completed at the Oklahoma Historical Society, along with primary source resources from archival materials from the now defunct Works Progress Administration. The resulting conclusion of this project is that slaves owned by Native Americans in Indian Territory were generally treated with much more humanity than were slaves in the Deep South. The main implication realized was that it is important to have a …

Los Porcentajes Para Las Mujeres En Los Cargos Políticos: Las Leyes De Cuotas The Quotas For Women In Political Offices: The Quota Laws, Breanna Cary, Hector Garza

SWOSU Journal of Undergraduate Research

There is a growing number of women in politics today, but many countries still struggle to obtain a number of women in politics that accurately represents the female population. Political parties and government organizations are searching for ways to get more women involved in the politics of their country. One way that they are doing this is by setting a quota for the number of women required to be representatives in their political party, or even a number of women to be in their government. The research of this essay looks at the quotas in various parts of the world …

The Nature And Origin Of Pebble Dikes And Associated Alteration: Tintic Mining District (Ag-Pb-Zn), Utah, Douglas M. Johnson

Theses and Dissertations

In many ore deposits throughout the world, brecciation often accompanies or occurs in association with mineralization (Sillitoe, 1985). Such is the case in the Tintic Mining District (Ag-Pb-Zn) of north-central Utah, where unique breccia features called pebble dikes occur alongside significant mineralization. Pebble dikes are tabular bodies of breccia, which consist of angular to rounded clasts of quartzite, shale, carbonate, and minor igneous rock cemented in a fine-grained clastic matrix. All clasts now lie above or adjacent to corresponding source rocks. Dikes are thin, typically less than 0.3 m wide to as much as 1 m, and can exceed 100 …

Garbage On The Green Report 2014 Summary Report, James Taylor, Caitlin Kengle

Garbage on the Green Reports

Garbage on the Green is a waste auditing program developed by the UNF Environmental Center in 2007, with support from Physical Facilities. The audit was designed to gain a better understanding of UNF’s solid waste stream and to improve the overall diversion rate. The program corresponds with UNF’s plan to reduce its overall environmental footprint.

Comparing Near-Regional And Local Measurements Of Infrasound From Mount Erebus, Antarctica: Implications For Monitoring, A. L. Dabrowa, D. N. Green, J. B. Johnson, J. C. Phillips, A. C. Rust

Geosciences Faculty Publications and Presentations

Local (100s of meters from vent) monitoring of volcanic infrasound is a common tool at volcanoes characterized by frequent low-magnitude eruptions, but it is generally not safe or practical to have sensors so close to the vent during more intense eruptions. To investigate the potential and limitations of monitoring at near-regional ranges (10s of km) we studied infrasound detection and propagation at Mount Erebus, Antarctica. This site has both a good local monitoring network and an additional International Monitoring System infrasound array, IS55, located 25 km away. We compared data recorded at IS55 with a set of 117 known Strombolian …

Discovery Of Thienoquinolone Derivatives As Selective And Atp Non-Competitive Cdk5/P25 Inhibitors By Structure-Based Virtual Screening, Arindam Chatterjee, Stephen J. Cutler, Robert J. Doerksen, Ikhlas A. Khan, John S. Williamson

Office for Research Publications and Presentations

Calpain mediated cleavage of CDK5 natural precursor p35 causes a stable complex formation of CDK5/p25, which leads to hyperphosphorylation of tau. Thus inhibition of this complex is a viable target for numerous acute and chronic neurodegenerative diseases involving tau protein, including Alzheimer’s disease. Since CDK5 has the highest sequence homology with its mitotic counterpart CDK2, our primary goal was to design selective CDK5/p25 inhibitors targeting neurodegeneration. A novel structure-based virtual screening protocol comprised of e-pharmacophore models and virtual screening workflow was used to identify nine compounds from a commercial database containing 2.84 million compounds. An ATP non-competitive and selective thieno[3,2- …

Amulet: A Secure Architecture For Mhealth Applications For Low-Power Wearable Devices, Andrés Molina-Markham, Ronald Peterson, Joseph Skinner, Tianlong Yun, Bhargav Golla, Kevin Freeman, Travis Peters, Jacob Sorber, Ryan Halter, David Kotz

Dartmouth Scholarship

Interest in using mobile technologies for health-related applications (mHealth) has increased. However, none of the available mobile platforms provide the essential properties that are needed by these applications. An mHealth platform must be (i) secure; (ii) provide high availability; and (iii) allow for the deployment of multiple third-party mHealth applications that share access to an individual's devices and data. Smartphones may not be able to provide property (ii) because there are activities and situations in which an individual may not be able to carry them (e.g., while in a contact sport). A low-power wearable device can provide higher availability, remaining …

Control Of Majorana Edge Modes By A G-Factor Engineered Nanowire Spin Transistor, Amrit De, Alexey Kovalev

Department of Physics and Astronomy: Faculty Publications

We propose the manipulation of Majorana edge states via hybridization and spin currents in a nanowire spin transistor. The spin transistor is based on a heterostructure nanowire comprising of semiconductors with large and small g-factors that form the topological and non-topological regions respectively. The hybridization of bound edge states results in spin currents and 4π-periodic torques, as a function of the relative magnetic field angle – an effect which is dual to the fractional Josephson effect. We establish relation between torques and spin-currents in the non-topological region where the magnetic field is almost zero and spin is …

Quantification Of The Statistical Effects Of Spatiotemporal Processing Of Nontask Fmri Data, M. Muge Karaman, Andrew S. Nencka, Iain P. Bruce, Daniel B. Rowe

Mathematics, Statistics and Computer Science Faculty Research and Publications

Nontask functional magnetic resonance imaging (fMRI) has become one of the most popular noninvasive areas of brain mapping research for neuroscientists. In nontask fMRI, various sources of “noise” corrupt the measured blood oxygenation level-dependent signal. Many studies have aimed to attenuate the noise in reconstructed voxel measurements through spatial and temporal processing operations. While these solutions make the data more “appealing,” many commonly used processing operations induce artificial correlations in the acquired data. As such, it becomes increasingly more difficult to derive the true underlying covariance structure once the data have been processed. As the goal of nontask fMRI studies …

Feasibility Of Scalable Quantum Computers, Benjamin N. Goodberry

Selected Honors Theses

No abstract provided.

Search For Standard Model Production Of Four Top Quarks In The Lepton + Jets Channel In Pp Collisions At S√=8 Tev, The Cms Collaboration, V. Khachatryan, A. M. Sirunyan, Marc M. Baarmand, Marcus Hohlmann, Himali Kalakhety, Francisco Yumiceva

Aerospace, Physics, and Space Science Faculty Publications

A search is presented for standard model (SM) production of four top quarks (t¯tt¯t) in pp collisions in the lepton + jets channel. The data correspond to an integrated luminosity of 19.6 fb−1 recorded at a centre-of-mass energy of 8TeV with the CMS detector at the CERN LHC. The expected cross section for SM t¯tt¯t production is SM t¯tt¯t 1 fb. A combination of kinematic reconstruction and multivariate techniques is used to distinguish between the small signal and large background. The data are consistent with expectations of the SM, and an upper limit of 32 fb is set at a …

Matter, Energy, And Heat Transfer In A Classical Ballistic Atom Pump, Tommy A. Byrd, Kunal K. Das, Kevin Mitchell, Seth Aubin, John B. Delos

Arts & Sciences Articles

A ballistic atom pump is a system containing two reservoirs of neutral atoms or molecules and a junction connecting them containing a localized time-varying potential. Atoms move through the pump as independent particles. Under certain conditions, these pumps can create net transport of atoms from one reservoir to the other. While such systems are sometimes called “quantum pumps,” they are also models of classical chaotic transport, and their quantum behavior cannot be understood without study of the corresponding classical behavior. Here we examine classically such a pump's effect on energy and temperature in the reservoirs, in addition to net particle …

Application Of The Monopole Source To Quantify Explosive Flux During Vulcanian Explosions At Sakurajima Volcano (Japan), Jeffrey B. Johnson, Alex J. C. Miller

Geosciences Faculty Publications and Presentations

A primary goal in volcano seismology is to characterize source motions internal to a volcano in terms of their representative forces. In a similar manner, much volcano infrasound research strives to recover eruptive force time histories corresponding to material accelerations occurring at Earth’s free surface. These motions may correspond to explosive emission of gas and pyroclasts (e.g., Banister, 1984), rapid ground distensions of a volcanic dome (e.g., Johnson and Lees, 2010), and/or gravity driven rock fall or pyroclastic flows (e.g., Yamasato, 1997). When free surface motion is unsteady it imposes stresses upon the surrounding atmosphere, which are propagated as acoustic …

X-Ray Emission From Magnetic Massive Stars, Y. Nazé, V. Petit, M. Rinbrand, David H. Cohen, S. Owocki, A. Ud-Doula, G. A. Wade

Physics & Astronomy Faculty Works

Magnetically confined winds of early-type stars are expected to be sources of bright and hard X-rays. To clarify the systematics of the observed X-ray properties, we have analyzed a large series of Chandra and XMM-Newton observations, corresponding to all available exposures of known massive magnetic stars (over 100 exposures covering ~60% of stars compiled in the catalog of Petit et al.). We show that the X-ray luminosity is strongly correlated with the stellar wind mass-loss rate, with a power-law form that is slightly steeper than linear for the majority of the less luminous, lower-${\dot{M}}$ B stars and flattens for the …

Route To Optimal Generation Of Soft X-Ray High Harmonics With Synthesized Two-Color Laser Pulses, Cheng Jin, Guoli Wang, Anh-Thu Le, C. D. Lin

Physics Faculty Research & Creative Works

High harmonics extending to X-rays have been generated from gases by intense lasers. To establish these coherent broadband radiations as an all-purpose tabletop light source for general applications in science and technology, new methods are needed to overcome the present low conversion efficiencies. Here we show that the conversion efficiency may be drastically increased with an optimized two-color pulse. By employing an optimally synthesized 2-µm mid-infrared laser and a small amount of its third harmonic, we show that harmonic yields from sub- to few-keV energy can be increased typically by ten-fold over the optimized single-color one. By combining with favorable …

Fall Update: See What We've Been Doing, Robert E. Gutsche Jr.

Sea Level Rise Collection

This post includes text related to the required October Interim Report for the Online News Association, which was submitted on October 28, 2014.

A Quasi-Classical Logic For Classical Mathematics, Henry Nikogosyan

Honors College Theses

Classical mathematics is a form of mathematics that has a large range of application; however, its application has boundaries. In this paper, I show that Sperber and Wilson’s concept of relevance can demarcate classical mathematics’ range of applicability by demarcating classical logic’s range of applicability. Furthermore, I introduce how to systematize Sperber and Wilson’s concept of relevance into a quasi-classical logic that can explain classical logic’s and classical mathematics’ range of applicability.

Planning For Adaptation To Climate Change: Lessons From The Us National Wildlife Refuge System, Robert L. Fischman, Vicky J. Meretsky, Alexei Babko, Michael Kennedy, Lei Liu, Michelle Robinson

Articles by Maurer Faculty

US national wildlife refuges have recent, detailed management plans illustrating the state of planning for climate-change adaptation in protected areas. Discussion of and prescriptions for addressing climate change increased in refuge plans between 2005 and 2010 but decreased in 2011. The plans respond to some climate-change impacts on biodiversity and call for monitoring but with little clarity regarding how to act on monitoring results and scant attention to future changes in phenology and community composition. The threats posed by sea-level rise generated the best-developed plan prescriptions. Examples of excellent prescriptions provide models for future planning. Some decision-support tools, such as …

Fully Differential Study Of Interference Effects In The Ionization Of H₂ By Proton Impact, Sachin D. Sharma, T. P. Arthanayaka, Ahmad Hasan, B. R. Lamichhane, J. Remolina, Adolph P. Smith, Michael Schulz

Physics Faculty Research & Creative Works

We have measured fully differential cross sections for ionization of H₂ by 75-keV proton impact. The coherence length of the projectile beam was varied by changing the distance between a collimating slit and the target. By comparing the cross sections measured for large and small coherence lengths pronounced interference effects could be identified in the data. A surprising result is that the phase angle in the interference term is primarily determined by the momentum transfer and only to a lesser extent by the recoil-ion momentum.

Common Hazards In Karst Terrain, Benjamin J. Currens, Alan Fryar, Carmen T. Agouridis

Agriculture and Natural Resources Publications

Karst refers to terrain largely drained by subsurface conduits and caves. Karst landscapes are characterized by surface features such as springs, sinkholes, shallow depressions, and rolling hills (Figure 1). Karst regions are also known for their subsurface or below-ground features such as conduits and caves (Figure 2). What makes a karst region unique is the way runoff drains from the land. In karst regions, some of the runoff flows into surface features such as sinkholes where it then travels underground. Some of this infiltrated water re-emerges at springs (Figure 1a), and some continues moving underground.

Irrigation Tips To Conserve Water And Grow A Healthy Lawn, Gregg Munshaw, Brad Lee

Agriculture and Natural Resources Publications

Turfgrasses are composed of thousands of cells, all containing water, in which metabolic processes such as photosynthesis and respiration take place. Water makes up 80 to 90 percent of the total plant mass. If this level drops below 60 percent, these processes may slow and wilting will occur. Water is critically important for:

• Maintaining turgidity, which keeps plants standing upright
• Transporting nutrients and sugars through the plant
• Chemical reactions
• Transpirational cooling when water moves out of the leaves and evaporates

Aerifying And Dethatching Lawns, Gregg Munshaw

Agriculture and Natural Resources Publications

Lawns in Kentucky will occasionally suffer due to compacted (hard) soils and excessive thatch layers. Although most lawns will not have problems with these issues, you may occasionally need to dethatch or aerify (core) to maintain a high quality lawn.

Mineral And Protein Blocks And Tubs For Beef Cattle, Jeff Lehmkuhler, Roy Burris, Donna M. Amaral-Phillips

Agriculture and Natural Resources Publications

Nutritional supplement blocks and tubs are convenient for beef producers, require no investment in feeding troughs and require a limited area for storing. One of the most attractive features is that they lower the labor needed to supplement livestock. Many producers use these products to provide supplemental nutrients to cattle consuming low-quality forages or as a mechanism to promote a more consistent intake of minerals. These products are also attractive to producers who have off-farm employment as they eliminate the need for daily feeding. Yet, they often come at a greater cost per unit of nutrient than more conventional feedstuffs. …

Reading A Feed Tag, Jacquie Jacob, Anthony J. Pescatore

Agriculture and Natural Resources Publications

Feed stores carry a variety of feed types. How do you chose which to buy? You need to read the feed tag. A lot of information is on a feed tag that can help you make your selection.

Hybrid Euclidean-And-Riemannian Metric Learning For Image Set Classification, Zhiwu Huang, R. Wang, S. Shan, X. Chen

Research Collection School Of Computing and Information Systems

We propose a novel hybrid metric learning approach to combine multiple heterogenous statistics for robust image set classification. Specifically, we represent each set with multiple statistics – mean, covariance matrix and Gaussian distribution, which generally complement each other for set modeling. However, it is not trivial to fuse them since the mean vector with dd-dimension often lies in Euclidean space RdRd, whereas the covariance matrix typically resides on Riemannian manifold Sym+dSymd+. Besides, according to information geometry, the space of Gaussian distribution can be embedded into another Riemannian manifold Sym+d+1Symd+1+. To fuse these statistics from heterogeneous spaces, we propose a Hybrid …

2014 Future Earth Young Scientists Conference On Integrated Science And Knowledge Co-Production For Ecosystems And Human Well-Being, Ivy Shiue, Et. Al.

Research Collection Yong Pung How School Of Law

Effective integration in science and knowledge co-production is a challenge that crosses research boundaries, climate regions, languages and cultures. Early career scientists are crucial in the identification of, and engagement with, obstacles and opportunities in the development of innovative solutions to complex and interconnected problems. On 25–31 May 2014, International Council for Science and International Social Science Council, in collaboration with the International Network of Next-Generation Ecologists and Institute for New Economic Thinking: Young Scholars Initiative, assembled a group of early career researchers with diverse backgrounds and research perspectives to reflect on and debate relevant issues around ecosystems and human …

Deep Learning For Content-Based Image Retrieval: A Comprehensive Study, Ji Wan, Dayong Wang, Steven C. H. Hoi, Pengcheng Wu, Jianke Zhu, Yongdong Zhang, Jintao Li

Research Collection School Of Computing and Information Systems

Learning effective feature representations and similarity measures are crucial to the retrieval performance of a content-based image retrieval (CBIR) system. Despite extensive research efforts for decades, it remains one of the most challenging open problems that considerably hinders the successes of real-world CBIR systems. The key challenge has been attributed to the well-known "semantic gap" issue that exists between low-level image pixels captured by machines and high-level semantic concepts perceived by human. Among various techniques, machine learning has been actively investigated as a possible direction to bridge the semantic gap in the long term. Inspired by recent successes of deep …

Predicting Effectiveness Of Ir-Based Bug Localization Techniques, Tien-Duy B. Le, Ferdian Thung, David Lo

Research Collection School Of Computing and Information Systems

Recently, many information retrieval (IR) based bug localization approaches have been proposed in the literature. These approaches use information retrieval techniques to process a textual bug report and a collection of source code files to find buggy files. They output a ranked list of files sorted by their likelihood to contain the bug. Recent approaches can achieve reasonable accuracy, however, even a state-of-the-art bug localization tool outputs many ranked lists where buggy files appear very low in the lists. This potentially causes developers to distrust bug localization tools. Parnin and Orso recently conduct a user study and highlight that developers …

The Update, October [November] 2014, University Of Northern Iowa. College Of Humanities, Arts And Sciences.

Update

Inside this issue:

-- Nature's Toolbox: Exhibition at the UNI Gallery of Art
-- Department News
-- School of Music Events

-- Art Works for Change
-- UNI Gallery of Art Awarded $32,500 Grant by Institute of Museum and Library Services
-- Faculty Awards
-- Dr. Wendy Miller Selected as Iowa's Outstanding Higher Education Art Director
-- Spooky Stuff: UNI Chemistry & Biochemistry Host Annual Halloween House Event
-- Student Spotlight: Department of Languages and Literatures: Vanessa Espinoza
-- Student Spotlight: Department of Communication Studies: Mikayla Lien
-- Alumnus Spotlight: Department of Art: Andrew Van Fleet
-- Student Spotlight: Department …

Hydrolytically Stable Analogues Of Sugar Phosphates And A Miniaturized In Situ Enzymatic Screen, Xiang Fei

Department of Chemistry: Dissertations, Theses, and Student Research

The glmS riboswitch undergoes self-cleavage upon binding its metabolic product GlcN6P, thereby providing a negative feedback mechanism limiting translation of the glmS protein when GlcN6P is abundant. As a first step toward the development of novel antimicrobials, we have synthesized a series of GlcN6P analogues bearing phosphatase-inert surrogates in place of the natural phosphate ester functionality. The self-cleavage assay identified two such compounds that display significant riboswitch actuator activity; namely those bearing a 6-phosphonomethyl group or a 6-O-malonyl ether. These two analogues exhibit a 22-fold and a 27-fold higher catalytic efficiency, respectively, than does glucosamine. Docking experiments were …