Digital Commons Network^™

Computational Models Exploring The Role Of Flexibility In Binding Tat Peptide To Tar Rna, Thanh Quoc Le

Master's Theses

Viral-encoded regulatory proteins interacting with RNA target sequences control the gene expression of lentiviruses, notably the human immunodeficiency virus (HIV) and bovine immunodeficiency virus (BIV). The latter provides a simpler interaction model between the viral trans-activator protein (Tat) and trans-activation response RNA element (TAR), including Tat peptides binding to TAR RNA fragments. This model may offer insights into clinical approaches for treatment, initially through theoretical consideration of the role of peptide flexibility in binding as evidenced by literature-based binding assays and NMR. It has more recently been suggested that DNA-protein binding may also be enhanced by increases in conformational entropy. …

Heat Transfer Interface To Graphitic Foam, Fang-Ming Lin

Master's Theses

The A Toroidal LHC ApparatuS (ATLAS) strip tracking detector is scheduled to be upgraded in 2025. The order of magnitude for the hit densities and the radiation damage are expected to increase. When radiation increases, the leakage current increases and the heat generated at the silicon trackers can lead to thermal runaway. Cooling is critical in these detectors.

In this study, a glassy graphitic foam was developed by AllComp Inc.~as a precursor to the adhesives (glues). Graphene\textsc{\char13}s highly anisotropic thermal properties result in high thermal conductivity in the planar direction, while it is low in the normal direction. In these …

Micrometeorological Observations Of Fire-Atmosphere Interactions And Fire Behavior On A Simple Slope, Jonathan Marc Contezac

Master's Theses

An experiment was designed to capture micrometeorological observations

during a fire spread on a simple slope. Three towers equipped with a variety of

instrumentation, an array of fire-sensing packages, and a Doppler lidar was

deployed to measure various aspects of the fire. Pressure and temperature

perturbations were analyzed for each of the grid packages to determine if the fire

intensity could be observed in the covariance of the two variables. While two of

the packages measured a covariance less than -15 °C hPa, there was no clear

trend across the grid. The fire front passage at each of the three …

Growth Options And Corporate Goodness, Linh Thompson

USF Tampa Graduate Theses and Dissertations

I find evidence to support the negative impact of growth options on corporate social responsibility (CSR). I propose that attention-constrained managers reduce corporate goodness to focus on growth opportunities. The effect is more pronounced for well-governed firms, for financially-constrained firms, and for capital-intensive social dimensions. Firms reduce their research and development (R&D) and capital expenditures, and experience lower annual buy-and-hold abnormal returns (BHAR) subsequent to significant increases in their social performance. I also report value implications of CSR investments. The empirical evidence suggests that managerial choices to divert attention from growth projects toward CSR hurt shareholders.

An Evaluation Of Modified Bed Load Sediment Transport Equations For Enhanced Sediment Transport Quantification In Steep Mountain Streams – Case Study Little Fountain Creek, Colorado Springs, Co., James Emerson Smith Iv

LSU Master's Theses

In mountainous regions, extreme floods occur every year, placing societies and infrastructures at risk. Communities rely on local, state, and federal agencies to emplace flood structures, perform flood risk assessments, and simulate catastrophic events. While, our ability to quantify and predict the movement of sediment in streams with low gradients is well developed (Bathurst, 1987), our ability to quantify and predict the movement of sediment along steep mountain streams (SMS) has not been developed to a similar degree (Yager, 2012; Schneider, 2016). To most effectively manage mountainous watersheds and understand the risk associated with flood events, scientists must better understand …

Acidity And Antioxidant Activity Of Cold Brew Coffee., Niny Z. Rao, Megan Fuller

College of Life Sciences Faculty Papers

The acidity and antioxidant activity of cold brew coffee were investigated using light roast coffees from Brazil, two regions of Ethiopia, Columbia, Myanmar, and Mexico. The concentrations of three caffeoylquinic acid (CQA) isomers were also determined. Cold brew coffee chemistry was compared to that of hot brew coffee prepared with the same grind-to-coffee ratio. The pH values of the cold and hot brew samples were found to be comparable, ranging from 4.85 to 5.13. The hot brew coffees were found to have higher concentrations of total titratable acids, as well as higher antioxidant activity, than that of their cold brew …

Target Localization And Tracking By Fusing Doppler Differentials From Cellular Emanations With A Multi-Spectral Video Tracker, Casey D. Demars, Michael Roggemann, Adam Webb, Timothy C. Havens

Michigan Tech Publications, Part 1

We present an algorithm for fusing data from a constellation of RF sensors detecting cellular emanations with the output of a multi-spectral video tracker to localize and track a target with a specific cell phone. The RF sensors measure the Doppler shift caused by the moving cellular emanation and then Doppler differentials between all sensor pairs are calculated. The multi-spectral video tracker uses a Gaussian mixture model to detect foreground targets and SIFT features to track targets through the video sequence. The data is fused by associating the Doppler differential from the RF sensors with the theoretical Doppler differential computed …

Dependence Of Nmr Chemical Shifts Upon Ch Bond Lengths Of A Methyl Group Involved In A Tetrel Bond, Steve Scheiner

Chemistry and Biochemistry Faculty Publications

Four different Lewis acids that might participate in a tetrel bond with a nucleophile (SEt₂Me⁺, NMe₄⁺, SMe₂, NMe₃) are examined. The NMR chemical shifts of the methyl C and H atoms are calculated as the CH bond lengths are systematically stretched and contracted, in the absence of a base. The C shielding diminishes by roughly 2 ppm for a stretch of 0.01 Å, while that of H drops by only 0.3 ppm. The deshieldings caused purely by the bond length changes are far too small to account for the …

An Evaluation Of Early Childhood Education Programs: The Parents’ Perspective Of Quality Care, Buu Chau Thai

Dissertations

Early childhood education (ECE) programs play a critical role in the social, emotional, and cognitive development of children and help to prepare them for kindergarten. Recognizing the benefits of ECE programs, state and federal governments have made notable efforts to make these programs more accessible. However, with various federal, state, and local governments involved in administering and funding ECE programs, a complex, fragmented, and oftentimes confusing system ensued, making the ECE landscape very difficult for parents to navigate. Parents are often the primary decision-makers when selecting educational programs for their children. Studies often focus on practitioners’ or researchers’ perspectives on …

Teacher And Administrator Knowledge, Beliefs, Attitudes, And Practices Related To Equity In A Suburban California School District, Arcia Dorosti

Dissertations

This dissertation is a case study of one district’s efforts to reduce the disparities in

educational outcomes among its ethnic groups as well as the disparities in educational

outcomes between its economically disadvantaged students and its students that are not

economically disadvantaged. The literature reviewed began with the larger historical

context around equity issues in education and then discussed in-school and out-of-school

factors affecting educational outcomes. The methods used included interviews with

teachers and administrators, site visits, and classroom observations. The results

summarized the successes and remaining challenges facing the district as it continues its

desired journey towards more equitable …

Resurrecting The Regulatory Properties Of The Ostreococcus Tauri Adp-Glucose Pyrophosphorylase Large Subunit, Carlos M. Figueroa, Misty L. Kuhn, Benjamin L. Hill, Alberto A. Iglesias, Miguel A. Ballicora

Chemistry: Faculty Publications and Other Works

ADP-glucose pyrophosphorylase (ADP-Glc PPase) catalyzes the first committed step for the synthesis of glycogen in cyanobacteria and starch in green algae and plants. The enzyme from cyanobacteria is homotetrameric (α4), while that from green algae and plants is heterotetrameric (α2β2). These ADP-Glc PPases are allosterically regulated by 3-phosphoglycerate (3PGA, activator) and inorganic orthophosphate (Pi, inhibitor). Previous studies on the cyanobacterial and plant enzymes showed that 3PGA binds to two highly conserved Lys residues located in the C-terminal domain. We observed that both Lys residues are present in the small (α) subunit of the Ostreococcus tauri enzyme; however, one of these …

Diets And Stable Isotope Signatures Of Yellowtail Rockfish (Sebastes Flavidus) In Central California, Jennifer Chiu

Master's Theses

Studies of fish diets can improve the understanding of trophic distributions and the predatory role of a species in an ecosystem. Identifying the spatial and temporal variability in the diets of fishes can provide useful information for stock assessments and management. Yellowtail Rockfish (Sebastes flavidus) are a commercially and recreationally important fishery species, and abundant along the central California coast, yet the most recent studies of diets occurred over 20 years ago in Oregon and Washington. To provide current information from California, I examined the food habits of Yellowtail Rockfish collected near Cordell Bank, the Farallon Islands, and Half Moon …

Lindenwood Digest, October 30, 2018, Lindenwood University

Lindenwood Digest

The Lindenwood Digest has been a digital employee newsletter since 2009.

Orisinalitas Desain Masalah Matematika Siswa Smp, Rizka Zulvana Wardhani, Cholis Sa’Dijah, Tjang Daniel Chandra

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This research aimed at describing originality of mathematics problem design. Data were obtained from Desain Masalah Matematika who posed by 25 students. Research subjects were taken based on students who could develop their ideas through the task sheet. Furthermore, data is analyzed into three levels of originality (LO), that is high (modification of information, problem content is same/different, and mathematics concept is different), moderate (modification of information, problem content is different, and mathematics concept is same), and low (modification of information, problem content is same, and mathematics concept is same). The result is 9 students including high LO, 12 students …

Guanidinium Compounds, Stephen Dimagno, Bao Hu

Department of Chemistry: Faculty Publications

The present application provides , inter alia , chemical com pounds useful as synthesis intermediates , said compounds comprising one or more guanidinium moieties and a hyper valent iodine atom . Methods for making these compounds are also provided.

Proses Berpikir Kritis Siswa Reflektif Dalam Menyelesaikan Masalah Matematika Pada Materi Sistem Persamaan Linier Dua Variabel, Dana Yuli Christiyanto, I Made Sulandra, Rustanto Rahardi

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims to describe the reflective students' critical thinking process in solving the problem of two-variable linear equation system. Instruments used to know the critical thinking process of the subject is a problem-solving test and interview. Through tests and interviews, we can analyze the critical thinking process of the subject based on six criteria focus, reason, inference, situation, clarity, and overview. The results showed that both subjects only met the criteria of focus, and experienced errors in making mathematical models, so that both are not able to solve the problem.

Analisis Pemahaman Konsep Fisika Mahasiswa Pada Materi Induksi Elektromagnetik, Retno Cahyaningrum, Arif Hidayat, Sutopo Sutopo

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

A lot of students’ difficulties are caused by a poor understanding of the concept. It caused by the poor understanding of basic concepts and misconceptions. Electromagnetic inductions’ concept is one of the difficulties. The purpose of this research is to analyze the understanding of the physics education student concept. A total of 102 respondents from bachelor and postgraduate level were given three optional questions. The results show that there is a difference in the achievement of the correct answer on each item. Through the explanation of this reason it is known that the students’ understanding who have taken the course …

Deskripsi Pemahaman Konsep Mahasiswa Dalam Menganalisis Usaha, Kalor, Dan Energi Internal Pada Proses Termodinamika, Agista Sintia Dewi Adila, Sutopo Sutopo, Wartono Wartono

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

The purpose of this study is to describe students understanding related to work, heat and internal energy that is represented in P-V diagrams. Subjects consisted of 103 students who are undergraduate physics education, undergraduate physics and graduate physics education students at State University of Malang. The results show that students tend to interpret work as the state quantities and interpret internal energy and heat as process quantities.

Scaffolding Untuk Mengatasi Hambatan Berpikir Siswa Dalam Menyelesaikan Masalah Sudut Pada Dimensi Tiga, Dwita Tyasti Asri, Toto Nusantara, Hery Susanto

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

The pupose of this research is to describe the thinking barriers of high school students in solving angle problems in the three dimensions. This research is a qualitative descriptive study. Data obtained from student tes result in solving problems, interviews and scaffolding. Subjects in this study are high school students who have learned abaut the angle between the line with the plane in the three dimensions. The results showed that subjects 1 (S1) and subject 2 (S2) experienced obstacles in solving angle problems in the three dimensions. High-ability student thinking barriers occur at the stage of devising a plan implementing …

Pengaruh Scaffolding Konseptual Dalam Problem Based Learning Terhadap Kemampuan Pemecahan Masalah, A. A. Sg Noviana Aryani Pucangan, Supriyono Koes Handayanto, Hari Wisodo

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims to find out the effect of conceptual scaffolding on Problem Based Learning toward problem solving skills. This research uses nonequivalent control group design with 32 students experimental class and 30 students control class. The test used consisted of a pretest of 13 multiple choice questions with a reliability value of 0.827 and a posttest of 10 essay questions with a reliability value of 0.615. The research hypothesis was tested using ANCOVA and indicate that conceptual scaffolding on PBL given effect to problem solving skills of 67,1% and experimental class average higher than control class. This indicate that …

Kualitas Argumentasi Ilmiah Siswa Pada Materi Hukum Newton, Adetya Dewi Wardani, Lia Yuliati, Ahmad Taufiq

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Newton’s Law is a part of many topics that need scientific argumentation skills. The purpose of this research is to identify the student’s argumentation quality in Newton’s Law. This study was performed by means a descriptive quantitative design to find the argumentation quality of 105 high school students in Blitar regency. The results of data analysis showed that most dominant quality of argumentation of the students were arguments consisting of claims versus claims or counter claims in level 1. Furthermore, the students sometimes made a claim based on their improper understanding of Newton’s law.

Impact Of Airplane Crashes On Firm's Credit Risk Under The Creditgrades Model, Alexandros Bougias

Undergraduate Economic Review

The paper examines the impact of airplane accidents with 40 or more fatalities, on airline's firm credit risk. The sample contains 20 airplane crashes for the period 2000-2017. The analysis proposes the CreditGrades model introduced by Finger et al. (2002) , which is an extension of the first passage time model of Black and Cox (1976). The study concludes that airplane accidents lead to a statistically significant increase in airline's Probability of Default. The results are both significant and robust under the t-Test and the non-parametric Wilcoxon Signed-rank test.

Water Lab Hosts 2018 Homecoming, Utah Water Research Laboratory

News

The Utah Water Research Lab celebrated an Alumni Homecoming on October 13^th, 2018. Over 200 alumni and current water lab affiliates joined in this celebration, including emeritus faculty and staff, current faculty and students, and their families.

Heme Dissociation From Myoglobin In The Presence Of The Zwitterionic Detergent N,N-Dimethyl-N-Dodecylglycine Betaine: Effects Of Ionic Liquids, Eric M. Kohn, Joshua Y. Lee, Anthony Calabro, Timothy Vaden, Gregory A. Caputo

College of Science & Mathematics Departmental Research

We have investigated myoglobin protein denaturation using the zwitterionic detergent Empigen BB (EBB, N,N-Dimethyl-N-dodecylglycine betaine). A combination of absorbance, fluorescence, and circular dichroism spectroscopic measurements elucidated the protein denaturation and heme dissociation from myoglobin. The results indicated that Empigen BB was not able to fully denature the myoglobin structure, but apparently can induce the dissociation of the heme group from the protein. This provides a way to estimate the heme binding free energy, ΔGdissociation. As ionic liquids (ILs) have been shown to perturb the myoglobin protein, we have investigated the effects of the ILs 1-butyl-3-methylimidazolium chloride (BMICl), 1-ethyl-3-methylimidazolium acetate (EMIAc), …

Current Caco3 Dissolution At The Seafloor Caused By Anthropogenic Co2, David Trossman

Faculty Publications

No abstract provided.

Faculty Senate Chronicle For October 4, 2018, Heather Howley

The University of Akron Faculty Senate Chronicle

No abstract provided.

A Survey Of Software Metric Use In Research Software Development, Nasir U. Eisty, George K. Thiruvathukal, Jeffrey C. Carver

Computer Science: Faculty Publications and Other Works

Background: Breakthroughs in research increasingly depend on complex software libraries, tools, and applications aimed at supporting specific science, engineering, business, or humanities disciplines. The complexity and criticality of this software motivate the need for ensuring quality and reliability. Software metrics are a key tool for assessing, measuring, and understanding software quality and reliability. Aims: The goal of this work is to better understand how research software developers use traditional software engineering concepts, like metrics, to support and evaluate both the software and the software development process. One key aspect of this goal is to identify how the set of metrics …

Mathematics Gift, Dave Larsen

College of Arts and Sciences Newsroom

High regard for a pair of University of Dayton mathematics professors + a generous donation in their honor = more opportunities for mathematics majors to attend conferences and organize student activities.

Smartphone-Based Prenatal Education For Parents With Preterm Birth Risk Factors, U. Olivia Kim, K. Barnekow, Sheikh Iqbal Ahamed, S. Dreier, C. Jones, M. Taylor, Md Kamrul Hasan, M. A. Basir

Mathematics, Statistics and Computer Science Faculty Research and Publications

Objective

To develop an educational mobile application (app) for expectant parents diagnosed with risk factors for premature birth.

Methods

Parent and medical advisory panels delineated the vision for the app. The app helps prepare for preterm birth. For pilot testing, obstetricians offered the app between 18–22 weeks gestational age to English speaking parents with risk factors for preterm birth. After 4 weeks of use, each participant completed a questionnaire. The software tracked topics accessed and duration of use.

Results

For pilot testing, 31 participants were recruited and 28 completed the questionnaire. After app utilization, participants reported heightened awareness of preterm …

Non-Abelian Quasiholes In Lattice Moore-Read States And Parent Hamiltonians, Sourav Manna, Julia Wildeboer, Germán Sierra, Anne E. B. Nielsen

Physics and Astronomy Faculty Publications

This work concerns Ising quasiholes in Moore-Read type lattice wave functions derived from conformal field theory. We commence with constructing Moore-Read type lattice states and then add quasiholes to them. By use of Metropolis Monte Carlo simulations, we analyze the features of the quasiholes, such as their size, shape, charge, and braiding properties. The braiding properties, which turn out to be the same as in the continuum Moore-Read state, demonstrate the topological attributes of the Moore-Read lattice states in a direct way. We also derive parent Hamiltonians for which the states with quasiholes included are ground states. One advantage of …