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Grand Valley Forum, Volume 040, Number 13, November 23, 2015, Grand Valley State University

2015-2016, Volume 40

Grand Valley Forum is Grand Valley State's faculty and staff newsletter, published from 1976 to the present.

Cortical Components Of Reaction-Time During Perceptual Decisions In Humans, Jacek P. Dmochowski, Anthony M. Norcia

Publications and Research

The mechanisms of perceptual decision-making are frequently studied through measurements of reaction time (RT). Classical sequential-sampling models (SSMs) of decision-making posit RT as the sum of non-overlapping sensory, evidence accumulation, and motor delays. In contrast, recent empirical evidence hints at a continuous-flow paradigm in which multiple motor plans evolve concurrently with the accumulation of sensory evidence. Here we employ a trial-to-trial reliability-based component analysis of encephalographic data acquired during a random-dot motion task to directly image continuous flow in the human brain. We identify three topographically distinct neural sources whose dynamics exhibit contemporaneous ramping to time-of-response, with the rate and …

Solution-Printed Organic Semiconductor Blends Exhibiting Transport Properties On Par With Single Crystals, Muhammad R. Niazi, Ruipeng Li, Er Qiang Li, Ahmad R. Kirmani, Maged Abdelsamie, Qingxiao Wang, Wenyang Pan, Marcia M. Payne, John E. Anthony, Detlef-M. Smilgies, Sigurdur T. Thoroddsen, Emmanuel P. Giannelis, Aram Amassian

Chemistry Faculty Publications

Solution-printed organic semiconductors have emerged in recent years as promising contenders for roll-to-roll manufacturing of electronic and optoelectronic circuits. The stringent performance requirements for organic thin-film transistors (OTFTs) in terms of carrier mobility, switching speed, turn-on voltage and uniformity over large areas require performance currently achieved by organic single-crystal devices, but these suffer from scale-up challenges. Here we present a new method based on blade coating of a blend of conjugated small molecules and amorphous insulating polymers to produce OTFTs with consistently excellent performance characteristics (carrier mobility as high as 6.7 cm²V⁻¹s⁻¹, low threshold …

Introduction, Elizabeth Rahman, Juan Alvaro Echeverri

Tipití: Journal of the Society for the Anthropology of Lowland South America

No abstract provided.

Applications Of High Performance Affinity Chromatography With High Capacity Stationary Phases Made By Entrapment, John A. Vargas Badilla

Department of Chemistry: Dissertations, Theses, and Student Research

High performance affinity chromatography (HPAC) is a technique that uses a biologically-related agent such as a transport protein or an antibody as the stationary phase in an HPLC system. In recent years, HPAC has been shown to be a valuable bioanalytical tool for studying solute-protein interactions. Human serum albumin (HSA), the most abundant protein in blood (with concentrations of 35 to 50 mg/mL in serum), has been shown to interact with many drugs, affecting their transport, excretion and metabolism. A physical method for immobilizing proteins in HPAC supports has been optimized in this dissertation by using HSA as a model …

Whalesong 2015-11-23, N/A N/A

Whalesong

No abstract provided.

Direct And Indirect Effects Of The Caribbean Cymothoid Parasite Anilocra Haemuli On Host Energetics, Behavior, And Trophic Interactions, Rachel Lynn Welicky

Student Theses and Dissertations

The majority of coral reef research focuses on organisms that are familiar to humans, yet 80% of coral reef animals are parasites. Research on the direct effects of parasitism has suggested that hosts may undergo both behavioral and physiological changes. These changes may manifest at the ecosystem level, yet evidence of such changes are scarce. The objectives of this study were to investigate the direct and indirect effects of the Caribbean cymothoid parasite Anilocra haemuli on Haemulon flavolineatum (French grunt) energetics, behavior and trophic interactions. I conducted field surveys to measure A. haemuli prevalence of infection and determine its association …

Sonic Substances And Silent Sounds: An Auditory Anthropology Of Ritual Songs, Bernd Brabec De Mori

Tipití: Journal of the Society for the Anthropology of Lowland South America

No abstract provided.

Synthesis Of Agents For The Treatment And Analysis Of Tropical Diseases, Jeanine Yacoub

USF Tampa Graduate Theses and Dissertations

Toxoplasmosis is an opportunistic disease caused by the protozoan parasite Toxoplasma gondii. The parasite is usually staved off by a healthy immune system and remains dormant in the body. In immunocompromised patients, the parasite can become active and spread throughout the body causing symptoms such as encephalitis, cognitive disorders, seizures, and death. Combination drug therapy is the usual treatment for toxoplasmosis; however, patients suffer from problems of intolerance, allergic reactions, and cytotoxicity. In an effort to identify new drug targets for toxoplasmosis, a series of compounds have been synthesized that can be used as tools to probe the unique …

Self-Consistent Modeling Of Photoionization And The Kerr Effect In Bulk Solids, Jeremy R. Gulley, Thomas E. Lanier

Faculty Articles

In calculations of ultrafast laser-induced ionization the treatment of fundamental mechanisms such as photoionization and the Kerr effect are treated in isolation using monochromatic perturbative approaches. Such approaches are often questionable for pulses of ultrashort duration and multi-chromatic spectra. In this work we address this issue by solving the quantum optical Bloch equations in a 3D quasi-momentum space and show how to couple this model to ultrashort pulse propagation in dielectrics. This approach self-consistently couples a quantum calculation of the photoionization yield, the photoionization current, and the current from free-carriers with the traditional Kerr effect (self-focusing and self phase modulation) …

Software-And Hardware-In-The-Loop Verification Of Flight Dynamics Model And Flight Control Simulation Of A Fixed-Wing Unmanned Aerial Vehicle, Calvin Coopmans, Michal Podhradsk, Nathan V. Hoffer

Mechanical and Aerospace Engineering Faculty Publications

Unmanned aerial system (UAS) use is ever-increasing. In this paper, it is shown that even with low-cost hardware and open-source software, simple numerical testing practices (software- and hardware-in-the-loop) can prove the accuracy and usefulness of an aeronautical flight model, as well as provide valuable pre-flight testing of many situations typically only encountered in flight: high winds, hardware failure, etc. Software and hardware simulation results are compared with actual flight testing results to show that these modeling and testing techniques are accurate and provide a useful testing platform for a small unmanned aerial vehicle. Source code used in simulation is open …

Calculation Of Nonlinear Optical Damage From Space-Time-Tailored Pulses In Dielectrics, Thomas E. Lanier, Jeremy R. Gulley

Faculty Articles

Control of the time duration of a laser pulse as it focuses spatially in a material provides a means for delaying the onset of nonlinear e↵ects during propagation. We investigate simultaneous space-time focusing (SSTF) of femtosecond radially-chirped annular pulses in Kerr dielectrics. The energy and temporal chirp of pulses incident upon a grating-grating-lens system are varied in simulations that solve the unidirectional pulse propagation equation. This system is modeled by inserting transformations that act on the electric field obtained from propagation from one component to the next. The propagation is coupled to the time evolution of the free charge density …

The Impact Of Pedagogical Agents' Conversational Formality On Learning And Learner Impressions, Haiying Li

Electronic Theses and Dissertations Archive

The dissertation examined the impact of agents' conversational formality on the learning of summarization skills and learner impressions in an intelligent tutoring system (ITS) with trialogues (a teacher agent, a student agent, and a human learner). Formal language is in the informational genre (as opposed to narrative) and increases with word abstractness, syntactic complexity, referential cohesion, and deep cohesion. At the other end of the continuum, informal discourse tends to have concrete words, simple syntax, low cohesion (because knowledge-based inferences can fill the gaps), and high narrativity. There have been no experimental investigations that have maniputed teacher language because it …

Matched, Somewhat-Matched Or Mismatched? Predictors Of Degree-Job Match Among Stem Graduates, Taghreed Ahmed Alhaddab

Seton Hall University Dissertations and Theses (ETDs)

The current third-generation globalization caused structural, organizational and functional changes in the STEM workforce along with changes in human capital flow. The new globalization shift produced new world order causing the STEM workforce to adopt new frameworks, new skills, and new policy approaches to maintain economic strength and achieve growth and prosperity. Available data indicate that the U.S. secondary and postsecondary education system prepares and produce more than an adequate number of STEM graduates. The perceived crisis in the number of U.S. STEM graduates was not confirmed by any data or policy report. Thus, attention should not be caught simply …

Comorbidity Of Learning Disorders And Attention Deficit Hyperactivity Disorder In A Sample Of Omani Schoolchildren, Watfa S. Al-Mamari, Mahmoud M. Emam, Amna M. Kazem, Ali M.

Sultan Qaboos University Medical Journal

Objectives: The estimated worldwide prevalence of learning disorders (LDs) is approximately 2‒10% among school-aged children. LDs have variable clinical features and are often associated with other disorders. This study aimed to examine the comorbidity of LDs and attention deficit hyperactivity disorder (ADHD) among a sample of schoolchildren in Oman. Methods: This study was conducted between January 2014 and January 2015 at the Sultan Qaboos University, Muscat, Oman. The Learning Disabilities Diagnostic Inventory (LDDI) and the 28-item version of the Conners’ Teacher Rating Scale was completed by classroom teachers to determine the existence of LD and ADHD symptoms in 321 children …

Do All Bps Black Hole Microstates Carry Zero Angular Momentum?, Abishek Chowdhury, Richard S. Garavuso, Swapnamay Mondal, Ashoke Sen

Publications and Research

From the analysis of the near horizon geometry and supersymmetry algebra it has been argued that all the microstates of single centered BPS black holes with four unbroken supersymmetries carry zero angular momentum in the region of the moduli space where the black hole description is valid. A stronger form of the conjecture would be that the result holds for any sufficiently generic point in the moduli space. In this paper we set out to test this conjecture for a class of black hole microstates in type II string theory on T6 , represented by four stacks of D-branes wrapped …

Assessment Of Learning Gains In A Flipped Biochemistry Classroom, Deanna Dahlke Ojennus

Chemistry Faculty Scholarship

The flipped classroom has become an increasingly popular pedagogical approach to teaching and learning. In this study, learning gains were assessed in a flipped biochemistry course and compared to gains in a traditional lecture. Although measured learning gains were not significantly different between the two courses, student perception of learning gains did differ and indicates a higher level of satisfaction with the flipped lecture format.

One Good Lesson, Community Of Practice Model For Preparing Teachers Of Writing, Latrise P. Johnson, Elizabeth P. Eubanks

Teaching/Writing: The Journal of Writing Teacher Education

Many writing initiatives have been advocated as ways to improve student writing. However, in order for teachers to successfully teach writing, they must be exposed to a variety of classroom-tested approaches (National Writing Project, 2003).With this in mind, a summer teaching writing course that met at a local high school combined the study of several approaches to teaching writing and field-based teaching and then employed one classroom-tested approach. Using Wenger’s (1998, 2010) communities of practice model, the teaching and learning about writing instruction centered on “practice” within the community and emphasized that preservice teachers act as social participants--that is, meaning-making …

It’S A Matter Of Practice: Influences Of A Writing Methods Course On Inservice Teachers’ Dispositions And Self-Efficacy, Sherry Dismuke

Teaching/Writing: The Journal of Writing Teacher Education

This mixed-methods study examined the influences of a graduate writing methods course on the dispositions and instructional practice of twelve elementary classroom teachers, six who participated in the course and six who did not, during their post-graduate education. Data from interviews, classroom observation notes, and protocols have been analyzed, compared, and integrated. Outcomes of this study link participation in this course with increased confidence and readiness to teach the complexities of writing, as well as enhanced instructional practice and student learning opportunities. Findings suggest implications for teacher professional development, literacy teacher educators, and teacher education researchers.

What Does College Writing Really Entail? The Ccss Connection To University Writing, Marcy Taylor, Elizabeth Marie Brockman

Teaching/Writing: The Journal of Writing Teacher Education

This article responds to the question: What Does College Writing Really Entail? The authors showcase four university-level writing assignments and demonstrate how they collectively reflect both assessment results of study of college writing at a Midwestern University and the Common Core State Standards, especially the writing and reading anchor standards.

Strategies For Promoting Success In Inclusive Mathematics Classrooms, Jenny Root, Luann Davis, Chelsi Brosch

Inclusion Across the Lifespan Conference

A brief overview of the "big ideas" in mathematics for elementary/middle grades will be provided followed by evidence based strategies for teaching grade-aligned mathematics skills to students in inclusive classroom. Participants will practice selected strategies for embedding instruction within typical mathematics routines.

A Correlational Case Study On Distance From Home And Attrition Of First-Time, Full-Time Students, James L. Baldwin

Department of Educational Administration: Dissertations, Theses, and Student Research

As institutions face increasing demands to maintain or increase enrollments, colleges and universities have begun to recruit students from greater distances. The purpose of this ex-post facto case study was to determine the existence of a relationship between the institutional distance from home and the attrition of traditional-aged, first-time, full-time students prior to the second year at the University of Pittsburgh at Bradford, one of the four-year campuses of the University. Following the correlational analysis, further analysis was conducted to determine if a non-linear relationship existed between the institutional distance from home and attrition of first-year students prior to their …

The Young Radio Lobe Of 3c 84: Inferred Gas Properties In The Central 10 Pc, Yutaka Fujita, Nozomu Kawakatu, Isaac Shlosman, Hirotaka Ito

Physics and Astronomy Faculty Publications

We analyse the environment of the supermassive black hole (SMBH) in the centre of a massive elliptical galaxy NGC 1275 in the Perseus cluster, hosting the radio source 3C 84. We focus on the young radio lobe observed inside the estimated Bondi accretion radius, and discusss the momentum balance between the jet associated with the lobe and the surrounding gas. The results are compared with the proper motion of the radio lobe obtained with the very long baseline interferometry. We find that under assumption of a high-density environment ( ≳ 100 cm⁻³), the jet power must be comparable …

A Determination Of The Gamma-Ray Flux And Photon Spectral Index Distributions Of Blazars From The Fermi-Lat 3lac, Jack Singal

Physics Faculty Publications

We present a determination of the distributions of gamma-ray photon flux – the so-called LogN–LogS relation – and photon spectral index for blazars, based on the third extragalactic source catalogue of the Fermi Gamma-ray Space Telescope's Large Area Telescope, and considering the photon energy range from 100 MeV to 100 GeV. The data set consists of the 774 blazars in the so-called Clean sample detected with a greater than approximately 7σ detection threshold and located above ±20° Galactic latitude. We use non-parametric methods verified in previous works to reconstruct the intrinsic distributions from the observed ones …

Aaron James Johnson Sr.

African American Funeral Programs

No abstract provided.

Fearless Friday: Elizabeth Belair, Christina L. Bassler

SURGE

In this week’s episode of Fearless Friday, SURGE is excited to honor Elizabeth Belair!

Elizabeth Belair is a senior at Gettysburg College. Originally from Camden, Maine, Elizabeth has established herself well here on campus. When she initially came to college, she was unsure what she would end up majoring in. Now, she’s a passionate Globalization Studies major with a minor in Spanish. [excerpt]

November 19 And 20, 2015- Board Of Trustees Meeting Minutes, Regular And Special Meetings, Central Washington University Central Washington University

Board of Trustees Meeting Minutes

Meeting minutes for the Regular Meeting of the Board of Trustees at Central Washington University, November 19 and 20, 2015.

Experimental Evolution And Economics, Terence C. Burnham, Aimee S. Dunlap, David W. Stephens

Educator Preparation & Leadership Faculty Works

This is a theory paper that advocates experimental evolution as a novel approach to study economic preferences. Economics could benefit because preferences are exogenous, axiomatic, and contentious. Experimental evolution allows the empirical study of preferences by placing organisms in designed environments and studying their genotype and phenotype over multiple generations. We describe a number of empirical studies on different aspects of preferences. We argue that experimental evolution has the potential to improve economics.

Investigating The Role Of The Host Multidrug Resistance Associated Protein Transporter Family In Burkholderia Cepacia Complex Pathogenicity Using A Caenorhabditis Elegans Infection Model, Pietro Tedesco, Marco Visone, Ermenegilda Parrilli, Maria Luisa Tutino, Elena Perrin, Isabel Maida, Renato Fani, Francesco Ballestriero, Radleigh Santos, Clemencia Pinilla, Elia Di Schiavi, George Tegos, Donatella De Pascale

Mathematics Faculty Articles

This study investigated the relationship between host efflux system of the non-vertebrate nematode Caenorhabditis elegans and Burkholderia cepacia complex (Bcc) strain virulence. This is the first comprehensive effort to profile host-transporters within the context of Bcc infection. With this aim, two different toxicity tests were performed: a slow killing assay that monitors mortality of the host by intestinal colonization and a fast killing assay that assesses production of toxins. A Virulence Ranking scheme was defined, that expressed the toxicity of the Bcc panel members, based on the percentage of surviving worms. According to this ranking the 18 Bcc strains were …

The Scarlet - Volume Xcv, No. 9 (November 20, 2015), Scarlet Staff

The Scarlet (Student Newspaper) (2011-present)

The November 20, 2015 edition of The Scarlet (est. 1939), Clark University's student-run newspaper. The Scarlet is intellectually and editorially independent of the University.