cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Altered T Cell-Mediated Immunity and Infectious Factors in Autism
Creators: name: Hu, Yong
Publisher: name: Utah State University
Year: 2000

description: Three major questions were addressed in this dissertation: 1)Do immune abnormalities associated with autism primarily alter CD4+ T cell-mediated or humoral immune responses? 2) Are specific T cell clones expanded in autism? 3) Which, if any, infectious agents play a role in autism?
CD4+ T cell-mediated (Th1) or humoral (Th2) immune responses can be distinguished on the basis of the cytokines expressed. CD4+ T-cells secrete interleukin type 2 (IL-2) and interferon-γ, whereas a Th2 response is associated with secretion of interleukin type 4(IL-4). mRNA extracted from peripheral blood mononuclear nuclear cells (PBMC) showed significantly increased levels of IL-2 and interferon-γ expression in 24 autistic subjects relative to 19 normal controls. IL-4 mRNA was undetectable in the same group of autistic subjects. These results indicate that a CD4+ T cell-mediated immune response is associated with autism.
The expression of V-β chain mRNA was used as a marker or particular T cell clone expression. The expression of V-β 13 was significantly elevated in the study group of 11 autistic subjects, but not in 9 normal subjects. This suggests that T cell-mediated autoimmunity is a factor in the disease. Two types of human leukocyte antigens (HLA) alleles, DR4 and DR1, are associated with autism. The association between V-β 13 expressing T cell clones and autism was shown even more strongly in the subgroups expressing HLA DR4 or DR1. This result suggests a link between antigen presentation by HLA DR4 or DR1 and expansion of V-β 13 T cell clones.
The potential involvement of pathogens suspected to trigger autism was investigated by examining T cell proliferation responses to peptide epitopes. As a group, the 24 autistic subjects did not show a decreased response to peptides derived from rubella virus, influenza A virus, herpes simplex virus type 1, cytomegalovirus, and Clostridium tetani. Another model of autism postulates that autism is induced by pathogens that possess epitopes identical to the hypervariable region 3 (HVR-3) of the HLA DR4 or DR1 alleles. Two antigens derived from the Escherichia coli dna J protein and the Epstein-Barr virus glycoprotein 110 peptides that contain sequences identical to the HVR-3 of the DR4 and DR1 alleles were examined for their ability to induce T cell proliferation in autistic and normal subjects. No effect of the DR4 or DR1 alleles on the response to these two antigens was detected. Therefore, both types of results do not support the model of immune tolerance in autism. However, average T cell proliferative activity was significantly lower in the same autistic subjects. This confirms many prior reports that reduced T-cell responses may shape susceptibility to autism.
Further understanding of how immune abnormalities and infectious agents lead to autism should guide development of preventative and therapeutic strategies for this disease. (152 pages)
Fine structure of the asymptotic expansion of cyclic integrals
Creators: name: Kozlowski, K. K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The asymptotic expansion of $n$-dimensional cyclic integrals was expressed as a series of functionals acting on the symmetric function involved in the cyclic integral. In this article, we give an explicit formula for the action of these functionals on a specific class of symmetric functions. These results are necessary for the computation of the O(1) part in the long-distance asymptotic behavior of correlation functions in integrable models.
description: 13 pages
Quark transverse charge densities in the $Δ(1232)$ from lattice QCD
Creators: name: Alexandrou, Constantia
name: Korzec, Tomasz
name: Koutsou, Giannis
name: Lorcé, Cédric
name: Negele, John W.
name: Pascalutsa, Vladimir
name: Tsapalis, Antonios
name: Vanderhaeghen, Marc
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We extend the formalism relating electromagnetic form factors to transverse quark charge densities in the light-front frame to the case of a spin-3/2 baryon and calculate these transverse densities for the $Δ(1232)$ isobar using lattice QCD. The transverse charge densities for a transversely polarized spin-3/2 particle are characterized by monopole, dipole, quadrupole, and octupole patterns representing the structure beyond that of a pure point-like spin-3/2 particle. We present lattice QCD results for the $Δ$-isobar electromagnetic form factors for pion masses down to approximatively 350 MeV for three cases: quenched QCD, two-degenerate flavors of dynamical Wilson quarks, and three flavors of quarks using a mixed action that combines domain wall valence quarks and dynamical staggered sea quarks. We extract transverse quark charge densities from these lattice results and find that the $Δ$ is prolately deformed, as indicated by the fact that the quadrupole moment $G_{E2}(0$) is larger than the value -3 characterizing a point particle and the fact that the transverse charge density in a $Δ^+$ of maximal transverse spin projection is elongated along the axis of the spin.
description: 35 pages, 10 figures
Extending Israel-Stewart theory: Causal bulk viscosity at large gradients
Creators: name: Gavassino, Lorenzo
Publisher: name: arXiv
Year: 2025
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a class of relativistic fluid models for cold and dense matter with bulk viscosity, whose equilibrium equation of state is polytropic. These models reduce to Israel-Stewart theory for small values of the viscous stress $Π$. However, when $Π$ becomes comparable to the equilibrium pressure $P$, the evolution equations "adjust" to prevent the onset of far-from-equilibrium pathologies that would otherwise plague Israel-Stewart. Specifically, the equations of motion remain symmetric hyperbolic and causal at all times along any continuously differentiable flow, and across the whole thermodynamic state space. This means that, no matter how fast the fluid expands or contracts, the hydrodynamic equations are always well-behaved (away from singularities). The second law of thermodynamics is enforced exactly. Near equilibrium, these models can accommodate an arbitrarily complicated dependence of the bulk viscosity coefficient $ζ$ on both density and temperature.
description: 14 pages, 7 figure, published on PRD (see https://journals.aps.org/prd/abstract/10.1103/PhysRevD.111.083014)
Structural studies of Klebsiella capsular polysaccharides
Creators: name: Yang, Mo-Tai
Publisher: name: University of British Columbia
Year: 2010

description: The genus Klebsiella belongs to the family Enterobacteriaceae. Eighty types of Klebsiella have been serologically classified using the capsular polysaccharides as antigens. In order to understand the chemical basis of serological reactions, structural studies of the capsular polysaccharides from three strains of Klebsiella, namely, K5, K62 and K18 were carried out by means of conventional methods (such as hydrolysis, methylation and periodate oxidation) as well as modern methods (such as circular dichroism (c.d.) for the assignment of the D or L configuration of monosaccharides, gas-liquid chromatography (g.l.c.) and mass spectrometry for isolation and identification of sugar moieties). In the course of the present investigation, p.m.r. spectroscopy at 95° for the assignment of anomeric configurations of the constituent sugars, and Sephadex gel filtration for the separation of a series of acidic oligosaccharides obtained from the partial hydrolysis of polysaccharides for sequential analysis have been developed. The repeating units of K5, K62 and K18 are as follows. The structure of K5 capsular polysaccharide lacks any side chain and is also unusual in affording the first example of a 4,6-0-(l-carboxyethylidene)-D-raannose unit In a natural product. Capsular polysaccharide of K.62 belongs to the prevailing structural pattern so far published in this genus which is composed of a repeating unit involving a single sugar in the side chain with three to four monosaccharides in the backbone. Capsular polysaccharide from K18 is unusua complex in that it consists of two L-rhamnoses in the hexasaccharlde repeat unit which renders the polysaccharide less viscous and acid labile. Finally, an attempted immunological study on K5 is briefly discussed.
DigiVet Deliverable 2.4: Dashboards to support decision-making by relevant stakeholders within each case study.
Creators: name: Cha, Wonhee
name: Denwood, Matthew
name: Bogaardt, Carlijn
name: Enright, Jessica
Publisher: name: Zenodo
Year: 2023

description: This document outlines and signposts code for deliverable 2.4 from the DigiVet project:D2.4: Dashboards to support decision-making by relevant stakeholders within each case study.
Carmen Betti, Giulia Di Bello, Flavia Bacchetti, Gianfranco Bandini, Umberto Cattabrini, Pietro Causarano, Percorsi storici della Formazione, Apogeo, Milano 2009
Creators: name: Lentini, Stefano
Publisher: name: Studi sulla Formazione
Year: 2011

description: Studi sulla Formazione, Anno XIII, I-2010
Electrical measurement of a two-electron spin state in a double quantum dot
Creators: name: Yokoshi, Nobuhiko
name: Imamura, Hiroshi
name: Kosaka, Hideo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a scheme for electrical measurement of two-electron spin states in a semiconductor double quantum dot. We calculated the adiabatic charge transfer when surface gates are modulated in time. Because of spin-orbit coupling in the semiconductor, spatial displacement of the electrons causes a total spin rotation. It follows that the expectation value of the transferred charge reflects the relative phase as well as the total spin population of a prepared singlet-triplet superposition state. The precise detection of the charge transfer serves to identify the quantum superposition.
description: 4pages, 2figures
title: Evaluation of Utah's Prereferral Intervention Mandate
Creators: name: Nelson, J. Ron
Publisher: name: Utah State University
Year: 1990

description: The primary purpose of the present study was to evaluate the impact of Utah's prereferral intervention policy on the numbers of mildly handicapped students receiving special education services. Associated with this purpose, the study was also designed to identify the (a) types of prereferral intervention procedures available in school districts, (b) extent to which the procedures were implemented by schools, (c) effectiveness of the prereferral intervention procedures for maintaining students with handicaps in regular education, and (d) degree of prereferral intervention inservice training. In addition, LEA officials' perceptions regarding the prereferral intervention process were also examined.
It was expected, in light of previous research, that the prereferral intervention mandate would decrease the numbers of students classified (a) mildly handicapped, (b) learning disabled, (c) behavior disordered, and (d) intellectually handicapped. Because there was no information to suggest otherwise, it was also expected that the mandate would fail to have a differential effect on rural and urban school districts and on the numbers of students classified as severely intellectually handicapped (control variable), whereas the degree of prereferral intervention inservice training provided teachers was expected to exert a systematic influence on the outcomes.
Results of the evaluation showed that the prereferral intervention mandate failed to impact the numbers of students classified (a) mildly handicapped, (b) learning disabled, (c) behavior disordered, and (d) intellectually handicapped, and (e) severely intellectually handicapped (control variable). The mandate also failed to have a differential effect on rural and urban school districts. In addition, the results of the survey indicated that LEAs have implemented a variety of prereferral intervention procedures. However, within school districts, the number of schools implementing the procedures varied. LEA officials were uncertain whether the prereferral intervention procedures were effective or whether they should be maintained. LEA officials also indicated that teachers fail to benefit from their participation in the prereferral intervention process. Furthermore, they were uncertain whether the process is a bureaucratic hurdle and whether it should be maintained. (116 pages)
On injectivity of quasiregular mappings
Creators: name: Iwaniec, Tadeusz
name: Kovalev, Leonid V.
name: Onninen, Jani
Publisher: name: arXiv
Year: 2008
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30C62

description: We give sufficient conditions for a planar quasiregular mapping to be injective in terms of the range of the differential matrix.
Neural-Network Assisted Study of Nitrogen Atom Dynamics on Amorphous Solid Water -- II. Diffusion
Creators: name: Zaverkin, Viktor
name: Molpeceres, Germán
name: Kästner, Johannes
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The diffusion of atoms and radicals on interstellar dust grains is a fundamental ingredient for predicting accurate molecular abundances in astronomical environments. Quantitative values of diffusivity and diffusion barriers usually rely heavily on empirical rules. In this paper, we compute the diffusion coefficients of adsorbed nitrogen atoms by combining machine-learned interatomic potentials, metadynamics, and kinetic Monte Carlo simulations. With this approach, we obtain a diffusion coefficient of nitrogen atoms on the surface of amorphous solid water of merely $(3.5 \pm 1.1)10^{-34}$cm$^2$s$^{-1}$ at 10 K for a bare ice surface. Thus, we find that nitrogen, as a paradigmatic case for light and weakly bound adsorbates, is unable to diffuse on bare amorphous solid water at 10 K. Surface coverage has a strong effect on the diffusion coefficient by modulating its value over 9--12 orders of magnitude at 10 K and enables diffusion for specific conditions. In addition, we have found that atom tunneling has a negligible effect. Average diffusion barriers of the potential energy surface (2.56 kJ mol$^{-1}$) differ strongly from the effective diffusion barrier obtained from the diffusion coefficient for a bare surface (6.06 kJ mol$^{-1}$) and are, thus, inappropriate for diffusion modeling. Our findings suggest that the thermal diffusion of N on water ice is a process that is highly dependent on the physical conditions of the ice.
description: Accepted in MNRAS
Unified CNNs and transformers underlying learning mechanism reveals multi-head attention modus vivendi
Creators: name: Koresh, Ella
name: Gross, Ronit D.
name: Meir, Yuval
name: Tzach, Yarden
name: Halevi, Tal
name: Kanter, Ido
Publisher: name: arXiv
Year: 2025
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Convolutional neural networks (CNNs) evaluate short-range correlations in input images which progress along the layers, whereas vision transformer (ViT) architectures evaluate long-range correlations, using repeated transformer encoders composed of fully connected layers. Both are designed to solve complex classification tasks but from different perspectives. This study demonstrates that CNNs and ViT architectures stem from a unified underlying learning mechanism, which quantitatively measures the single-nodal performance (SNP) of each node in feedforward (FF) and multi-head attention (MHA) sub-blocks. Each node identifies small clusters of possible output labels, with additional noise represented as labels outside these clusters. These features are progressively sharpened along the transformer encoders, enhancing the signal-to-noise ratio. This unified underlying learning mechanism leads to two main findings. First, it enables an efficient applied nodal diagonal connection (ANDC) pruning technique without affecting the accuracy. Second, based on the SNP, spontaneous symmetry breaking occurs among the MHA heads, such that each head focuses its attention on a subset of labels through cooperation among its SNPs. Consequently, each head becomes an expert in recognizing its designated labels, representing a quantitative MHA modus vivendi mechanism. This statistical mechanics inspired viewpoint enables to reveal macroscopic behavior of the entire network from the microscopic performance of each node. These results are based on a compact convolutional transformer architecture trained on the CIFAR-100 and Flowers-102 datasets and call for their extension to other architectures and applications, such as natural language processing.
description: 31 pages, 11 figures, A short YouTube Video describing the main results https://www.youtube.com/watch?v=7I8bp7UAudk
title: The Effects of a Direct Instruction Program in Fractions on Academic and Mathematics Self-Concept
Creators: name: Lowry, William H.
Publisher: name: Utah State University
Year: 1989

description: The study investigated the effect of a videodisc-based, teacher-controlled, direct instruction-based program in fractions content, on self-concept. Self-concept was operationally defined as scores on a slightly modified version of Marsh's Self-Description Questionnaire (Marsh, 1988). A quasi-experimental, nonequivalent control group design was used to compare the self-report self-concept of two groups of upper elementary students (N = 337). The treatment group (n = 171) received instruction in fractions via the teacher-directed, videodisc-based, Mastering Fractions program (Systems Impact, 1986a). The control group (n = 166) received their normal grade four or grade five mathematics program, but did not include common fractions.
Differences in achievement scores provided support for previous findings regarding the Mastering Fractions program. The treatment group covariance-adjusted mean on a criterion-referenced test was higher than that of the control (5.9 standard deviations). Differences in achievement test scores among the treatment classes varied directly with the levels of program implementation across classes.
The data were examined using both the student and the class as the unit of analysis. Using the student as the unit of analysis, the treatment group mathematics self-concept covariance-adjusted mean was 0.22 standard deviations above that of the control group. An analysis of raw gain scores yielded a standardized mean difference effect size between the treatment and control group scores of +.12. A statistically significant but small main effect was also noted across student pretest achievement levels. The posttest difference between low-achiever means treatment versus control students is slightly larger than the difference between high-achiever means. No statistically significant interaction was noted between student achievement level at pretest and treatment condition.
The class was also used as the unit of analysis. In this case the mean difference effect sizes between experimental groups were +0.86 (ANCOVA) and +0.34 (raw gain scores).
Differences were small to moderate, but consistent with the study hypotheses. Recommendations are presented regarding future research and the use of direct instruction in school settings. (197 pages)
Franco Frabboni tra impegno politico e responsabilità pedagogica
Creators: name: Pinto Minerva, Franca
Publisher: name: Studi sulla Formazione
Year: 2011

description: The author reinterprets the work and the pedagogical action of Frabboni according to an utopian and political optical and emphasizing the capabilities of Bologna’s intellectual to tie the theoretical with the idea of training. According Frabboni, the risk is determined and the denial of fundamental characteristics of the subject-person, a person who has the right to care and sociality. The school is much in this direction, but a secular public school and who has at heart the fate of all citizens. These are favorite themes in the search of Frabboni and the author proposes a critical reading of these issues.
description: Studi sulla Formazione, Anno XIII, II-2010
Dynamics of the Volterra-type integral and differentiation operators on generalized Fock spaces
Creators: name: Bonet, José
name: Mengestie, Tesfa
name: Worku, Mafuz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: Various dynamical properties of the differentiation and Volterra-type integral operators on generalized Fock spaces are studied. We show that the differentiation operator is always supercyclic on these spaces. We further characterize when it is hypercyclic, power bounded and uniformly mean ergodic. We prove that the operator satisfies the Ritt's resolvent condition if and only if it is power bounded and uniformly mean ergodic. Some similar results are obtained for the Volterra-type and Hardy integral operators.
title: On the Transport Equations for Anisotropic Plasmas
Creators: name: Barakat, Abdallah R.
Publisher: name: Utah State University
Year: 1982

description: First, I attempt to present a unified approach to the study of transport phenomena in multicoponent anisotropic space plasmas. In the limit of small temperature anisotropies this system of generalized transport equations reduces to Grad's 13-moment system of transport equations. In the collisionless limit, the generalized transport equations account for collisionless heat flow, cillisionless viscosity, and large temperature anisotropies. Also, I show that with the appropriate assumptions, the system of generalized transport equations reduces to all of the other major systems of transport equations for anisotropic plasmas that have been derived to date.
Next, for application to aeronomy and space physics problems involving strongly magnetized plasma flows, I derive momentum and energy exchange collision terms for interpenetrating bi-Maxwellian gases. Collision terms are derived for Coulomb, Maxwell molecule, and constant collision cross section interaction potentials. The collision terms are valid for arbitrary flow velocity differences and temperature differences between the interacting gases as well as for arbitrary temperature anisotropies. The collision terms have to be evaluated numerically and the appropriate coefficients are presented in tables However, the collision terms are also fitted with simplified expressions, the accuracy of which depends on both the interaction potential and the temperature anisotropy. In addition, I derive the closed set of transport equations that are associated with the momentum and energy collision terms.
Finally, I study the extent to which Maxwellian and bi-Maxwellian series expansions can describe plasma flows characterized by non-Maxwellian velocity distributions, with emphasis given to modeling the anisotropic character of the distribution function. The problem considered is the steady state flow of a weakly-ionized plasma subjected to homogeneous electric and magnetic fields, and different collision models are used. In the case of relaxation collision model, a closed form expression is found for the ion velocity distribution function, while for more regorous models (polarization and hard sphere) I have to use the Monte Carlo simulation. These provided a basis for determining the adequacy of a given series expansion. I find that, in general, the bi-Maxwellian-based expansions for the velocity distribution function is better suited to describing anisotropic plasmas than the Maxwellian-based expansions. (166 pages)
title: Racial and Ethnic Differences in Rural and Urban Migration
Creators: name: Knapp, Lisa L.
Publisher: name: Utah State University
Year: 2003

description: Most past research on migration has focused on young adults or recent retirees since these are the two groups most likely to migrate. Very little research has looked at the factors that affect the migration of people in the middle stages of life. The purpose of this research is to identify those factors, and determine if there are differences between whites, blacks, and Hispanics.
The data utilized for this research were from the National Longitudinal Study of Youth 79, a study funded by the Bureau of Labor Statistics that has been ongoing since 1979. Migration was defined as the movement across county lines, and was calculated for 1979 and all subsequent even numbered years between 1980 and 2000. Other variables controlled were demographic, socioeconomic status, and household status, and were measured as categorical variables. Descriptive and logistic analyses were used. (77 pages)
Flow Conductance of a Single Nanohole
Creators: name: Savard, M.
name: Tremblay-Darveau, C.
name: Gervais, G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The mass flow conductance of single nanoholes with diameter ranging from 75 to 100 nm was measured using mass spectrometry. For all nanoholes, a smooth crossover is observed between single-particle statistical flow (effusion) and the collective viscous flow emanating from the formation of a continuum. This crossover is shown to occur when the gas mean free path matches the size of the nanohole diameter. As a consequence of the pinhole geometry, the breakdown of the Poiseuille approximation is observed in the power-law temperature exponent of the measured conductance.
Del Disincanto
Creators: name: PsykoSapiens
Publisher: name: Zenodo
Year: 2025

description: L'introduzione traccia una visione brutale e disincantata dell'esistenza umana, ponendo il dolore come condizione ontologica imprescindibile, non un accidente, ma un principio regolativo dell'essere. La realtà non si svela attraverso la ragione, bensì si radica nel dominio della materia oscura. La violenza non è una deviazione, ma la norma stessa, fondamento entropico dell’universo biologico.

L’uomo si rivela come carnefice e vittima, paradigma della propria degenerazione, prigioniero della sua miseria e del suo autoinganno. Ogni tentativo di comprendere il reale intensifica lo smarrimento, poiché la conoscenza non libera, ma dissolve chi osa guardare troppo a fondo. Non esiste catarsi, solo la crudele consapevolezza dell’abisso che è l’essenza stessa del mondo.

Il testo non concede redenzione o speranza, ma invita a mostrare il mostro senza maschere: un’umanità intrisa di strazio e corruzione, lacerazioni d’essenza, specchio impietoso di sé stessa, incapace di sfuggire alla propria natura nichilistica e autodistruttiva. L’unica possibilità è osservare il reale per ciò che è, senza veli né consolazioni.
Fermi surface origin of the low-temperature magnetoresistance anomaly
Creators: name: Feng, Yejun
name: Wang, Yishu
name: Rosenbaum, T. F.
name: Littlewood, P. B.
name: Chen, Hua
Publisher: name: arXiv
Year: 2025
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A magnetoresistance (MR) anomaly at low temperatures has been observed in a variety of systems, ranging from low-dimensional chalcogenides to spin and charge density wave (SDW/CDW) metals and, most recently, topological semimetals. In some systems parabolic magnetoresistance can rise to hundreds of thousands of times its low-temperature, zero-field value. While the origin of such a dramatic effect remains unresolved, these systems are often low-carrier-density compensated metals, and the physics is expected to be quasi-classical. Here we demonstrate that this MR anomaly in temperature also exists in high conductivity good metals with large Fermi surfaces, namely Cr, Mo, and W, for both linear and quadratic field-dependent regimes with their non-saturation attributed to open orbit and electron-hole compensation, respectively. We provide evidence that quantum transport across sharp Fermi surface arcs, but not necessarily the full cyclotron orbit, governs this low-temperature MR anomaly. In Cr, extremely sharp curvatures are induced by superposed lattice and SDW band structures. One observes an overlay of the temperature dependence of three phenomena: namely, MR at a constant high field, linear MR in the low-field limit, and Shubnikov-de Haas (SdH) oscillations of the lightest orbit. In Mo, the temperature dependence of low-T MR anomaly extends beyond those of its SdH oscillations but disappears at temperatures where Kohler's scaling reemerges. In the low-temperature and high-field limit, large magnetoresistance from carriers circling quantum orbits is the three-dimensional analogy to the zero-conductance state of carrier localization in the integer quantum Hall effect, especially with regard to the adverse effect of disorder.
title: The Effects of Mild Hearing Loss on Academic Performance Among Elementary School Age Children
Creators: name: Massine, Donna White
Publisher: name: Utah State University
Year: 1990

description: Research endeavoring to determine the effect of a mild sensorineural hearing-impairment on academic performance has resulted in conflicting conclusions. To date, there has been limited research on the educational implications of a mild hearing loss in the elementary grades but very few studies have utilized a normal-hearing control group to compare with the hearing-impaired and none have examined whether a relationship exists beyond sixth grade. This study measured the academic performance of mildly hearing-impaired children by comparing them with their normal-hearing counterparts. The achievement scores of the Iowa Test of Basic Skills from twelve pairs of children in the 5th through 8th grades were compared. The results revealed no statistical significance between the two groups for grade levels, age, or subject matter areas. However, the grade equivalent mean score of the hearing-impaired group was poorer than that of the normal hearing control group in the 4th and 5th grade. Scores on sub-tests were also lower for the hearing-impaired students during these same grades. After 5th grade a pattern was not observed, with this small number of students. The study discusses the implications of these results indicating the hearing-impaired student is at academic risk through 5th grade.
Observational Constraints on Transverse Gravity: a Generalization of Unimodular Gravity
Creators: name: Lopez-Villarejo, J. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the hypothesis that the set of symmetries enjoyed by the theory that describes gravity is not the full group of diffeomorphisms Diff(M), as in General Relativity, but a maximal subgroup of it, TransverseDiff(M), with its elements having a jacobian equal to unity; at the infinitesimal level, the parameter describing the coordinate change, xi^mu (x), is transverse, i.e., partial_mu(xi^mu)=0. Incidentally, this is the smaller symmetry one needs to propagate consistently a graviton, which is a great theoretical motivation for considering these theories. Also, the determinant of the metric, g, behaves as a "transverse scalar", so that these theories can be seen as a generalization of the better-known unimodular gravity. We present our results on the observational constraints on transverse gravity, in close relation with the claim of equivalence with general scalar-tensor theory. We also comment on the structure of the divergences of the quantum theory to the one-loop order.
description: Prepared for the First Mediterranean Conference on Classical and Quantum Gravity, MCCQG, Kolymbari (Crete, Greece), 14-18 September, 2009; also, ERE2009: Gravitation in the Large, Bilbao (Spain), 7-11 September, 2009
The long wavelength limit of hard thermal loop effective actions
Creators: name: Brandt, F T
name: Frenkel, J
name: Taylor, J C
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive a closed form expression for the long wavelength limit of the effective action for hard thermal loops in an external gravitational field. It is a function of the metric, independent of time derivatives. It is compared and contrasted with the static limit, and with the corresponding limits in an external Yang-Mills field.
description: 5 pages
title: Changing the World through the Word: Developing Critical Consciousness Through Multicultural Children’s Literature with Critical Literacy in an Elementary Classroom
Creators: name: Lee, HyeKyoung
Publisher: name: Utah State University
Year: 2017

description: The purpose of this study was to explore how fifth graders develop critical consciousness regarding the self and the world through critical literacy approaches using multicultural children’s literature. I employed Lewison, Flint, and Van Sluys’ four dimensions of critical literacy. I used a qualitative case study to design, frame and conduct this study in order to collect data and examine students’ cultural patterns including values, beliefs, behaviors, and language that they enacted in the critical literacy practices. I collected data through classroom observations, semi-structured students and teacher interviews, informal conversation, researcher’s reflective journal entries and field notes, and student-made artifacts. Findings show that the students were more aware of their own sociopolitical positions in the school, home and society, as well as how their lives were shaped by the sociocultural and political forces. The students were able to link their critical understanding of their own lives to larger sociopolitical issues associated with power and privilege, and this understanding encouraged them to engage in action for social justice. They were eager to take action such as writing a petition for a gender fairness agenda to create a positive school climate. This study is important for educators who hope to encourage students to become critical thinkers, as it shows how children critically engage in reading, discussion, and action regarding social justice issues through multicultural children’s literature with critical literacy approaches.
title: Mechanistic Studies of the Iron and Molybdenum Nitrogenases
Creators: name: Harris, Derek
Publisher: name: Utah State University
Year: 2017

description: As a basic building block in many biological molecules the element nitrogen (N) is essential for life. Dinitrogen (N2) is abundant in Earth’s atmosphere, but this form is biologically unavailable. To be biologically available N2 must undergo an energy demanding reduction reaction to the fixed form, ammonia (NH3). The industrial Haber-Bosch process, which accounts for approximately 50% of the worlds fixed nitrogen, uses energy from fossil fuels to achieve high pressures and temperatures to facilitate the reaction. The energy used by Haber-Bosch accounts for approximately 2% of the world’s annual supply. The remainder of fixed nitrogen is produced biologically by nitrogen fixing microorganisms (diazotrophs), utilizing nitrogenase enzymes. Nitrogenase enzymes perform the reduction at ambient temperature and pressure, deriving the necessary energy from the energy rich molecule adenosine triphosphate (ATP). The main focus of this research is exploring how nitrogenase enzymes are able to achieve N2 reduction under ambient conditions. Another focus is aimed at understanding how nitrogenase enzymes can be used to reduce carbon dioxide into energy rich hydrocarbons. A more complete understanding of these can be used to inform industry on cleaner more efficient processes.
Neutrino Masses and Heavy Triplet Leptons at the LHC: Testability of Type III Seesaw
Creators: name: Li, Tong
name: He, Xiao-Gang
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study LHC signatures of Type III seesaw in which SU(2)_L triplet leptons are introduced to supply the heavy seesaw masses. To detect the signals of these heavy triplet leptons, one needs to understand their decays to standard model particles which depend on how light and heavy leptons mix with each other. We concentrate on the usual solutions with small light and heavy lepton mixing of order the square root of the ratio of light and heavy masses, (m_ν/M_{ν_R})^{1/2}. This class of solutions can lead to a visible displaced vertex detectable at the LHC which can be used to distinguish small mixing and large mixing between light and heavy leptons. We show that, in this case, the couplings of light and heavy triplet leptons to gauge and Higgs bosons, which determine the decay widths and branching ratios, can be expressed in terms of light neutrino masses and their mixing. Using these relations, we study heavy triplet lepton decay patterns and production cross section at the LHC. If these heavy triplet leptons are below a TeV or so, they can be easily produced at the LHC due to their gauge interactions from being non-trivial representations of SU(2)_L. We consider two ideal production channels, 1) E^+E^- \to \ell^+\ell^+ \ell^-\ell^- jj (\ell=e,μ,τ) and 2) E^\pm N \to \ell^\pm \ell^\pm jjjj in detail. For case 1), we find that with one or two of the light leptons being τit can also be effectively studied. With judicious cuts at the LHC, the discovery of the heavy triplet leptons as high as a TeV can be achieved with 100 fb^{-1} integrated luminosity.
description: 39 pages, 36 figures, accepted version by PRD
title: A Study of Magnetic Activity Effects on the Thermospheric Winds in the Low Latitude Ionosphere
Creators: name: Davila, Ricardo Cruz
Publisher: name: Utah State University
Year: 1994

description: The purpose of this thesis is to examine the effects of magnetic activity on the low latitude F-region thermospheric winds. The F-region (120-1600 km) is a partially ionized medium where O+ and O are the major ion and neutral species, respectively. The thermospheric winds at these altitudes are driven primarily by pressure gradient forces resulting from the solar heating during the day and cooling at night. For this study, we use measured Fabry-Perot Interferometer (FPD winds at Arequipa (16.5°S, 71.5°W) and measured FPI and Incoherent Scatter Radar (ISR) winds at Arecibo (18.6°N, 66.8°W).
Previous wind studies at Arequipa and Arecibo concentrated on the climatological wind patterns highlighting solar cycle effects and seasonal variations; however, these studies did not address the effects of magnetically disturbed conditions on the seasonal averaged winds. To properly investigate storm time effects on the neutral winds, we must first investigate solar cycle effects on the seasonal averages during magnetically quiet (Kp < 3) conditions. This study will include a detailed analysis of solar cycle effects on the seasonally averaged winds for Arequipa and Arecibo. In addition to the wind averages, we used cubic splines to fit the average wind profiles and to provide better comparisons with modeled results. We also performed a study on the airglow emission heights using both Jicamarca and Arecibo electron density profiles. This established the height which we will use to compare our experimental data with the model winds.
To investigate magnetic activity effects on the FPI and ISR winds, we used three magnetic activity cases which cover all storm time scenarios. These magnetic activity cases are the extended quiet, short-term disturbed, and extended disturbed conditions. The first case, the extended quiet, is the condition where the previous and short term magnetic activity is quiet (12 hour Kp ≤ 3 and the Kp ≤ 3). The short-term disturbed case is defined for the condition where the previous magnetic activity is quiet (12 hour Kp ≤ 3) and then becomes disturbed (Kp ≤ 3). Last, we considered the case where previous and short-term magnetic activity are disturbed (12 hour Kp ≤ 3 and the Kp ≤ 3).
Our last objective is to use our data to validate the predictions from the Thermosphere/Ionosphere General Circulation model (TIGCM93) and the Horizontal Wind Model (HWM93). This study should further our understanding of the physical processes which produce the low latitude quiet and disturbed winds. The TIGCM93 is a first principal model and the HWM93 is an empirical model based on ground-based and satellite measurements. The main advantage of using the TIGCM93 is the ease of studying the dynamics of ionospheric phenomena by simply changing various model inputs, while the HWM93 allows us a comparison between our experimental wind data sets with the established climatology of the winds over Arequipa and Arecibo.
Nucleon sigma term and strange quark content in 2+1-flavor QCD with dynamical overlap fermions
Creators: name: Ohki, H.
name: Aoki, S.
name: Fukaya, H.
name: Hashimoto, S.
name: Kaneko, T.
name: Matsufuru, H.
name: Noaki, J.
name: Onogi, T.
name: Shintani, E.
name: Yamada, N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study the sigma term and the strange quark content of nucleon in 2+1-flavor QCD with dynamical overlap fermions. We analyze the lattice data of nucleon mass taken at two different strange quark masses with five values of up and down quark masses each. Using the reweighting technique, we study the strange quark mass dependence of the nucleon and extract the strange quark content.
description: 7 pages, 4 figures, talk given at the XXVII International Symposium on Lattice Field Theory, July 26-31 2009, Peking University, Beijing, China
OHSU School of Dentistry Anthology (Issue 1)
Creators: name: Sakaguchi, Ron
name: Baker, Jonathon L.
name: Fugolin, Ana Paula P.
Publisher: name: Oregon Health and Science University
Year: 2023
Subjects: subject: Computational Biology
subject: SOD
subject: OHSU
subject: Student
subject: Biomaterials
subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Biosciences
subject: CATS
subject: Critically Appraised Topics
subject: Student research
subject: Student research group
subject: Omics

description: This inaugural issue includes articles from Dr. Ana Fugolin, D.D.S., M.S, Ph.D. and Dr. Jonathan Baker, Ph.D., based on summaries of their research at the Oregon Health & Science University School of Dentistry Research Retreat, held on September 22, 2023. The anthology also includes six critically reviewed topics posters, or caseCATS, from dental students who received awards at the Oregon Dental Conference student research competition in April 2023. Dr. Baker briefly defines the oral microbiota and discusses his lab’s microbial ‘omics approach, using nanopore sequencing on saliva and oral bacterial RNA that has revolutionized oral health research. Dr. Fugolin provides an overview of novel stimuli-responsive biomaterials for applications in restorative dentistry and periodontal disease management that will pioneer a new era in patient-centered dental treatments. The caseCATs evaluate a range of topics, including adhesive systems, maxillary skeletal expansion, rhBMP-2 bone graft for pediatric alveolar cleft lip and palate, the Hal technique for carious primary molars, reduction of bisphenol-A leaching and treatment of oral mucositis in patients undergoing chemotherapy treatment.
DEBACER: a method for slicing moderated debates
Creators: name: Ferraz, Thomas Palmeira
name: Alcoforado, Alexandre
name: Bustos, Enzo
name: Oliveira, André Seidel
name: Gerber, Rodrigo
name: Müller, Naíde
name: d'Almeida, André Corrêa
name: Veloso, Bruno Miguel
name: Costa, Anna Helena Reali
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Subjects change frequently in moderated debates with several participants, such as in parliamentary sessions, electoral debates, and trials. Partitioning a debate into blocks with the same subject is essential for understanding. Often a moderator is responsible for defining when a new block begins so that the task of automatically partitioning a moderated debate can focus solely on the moderator's behavior. In this paper, we (i) propose a new algorithm, DEBACER, which partitions moderated debates; (ii) carry out a comparative study between conventional and BERTimbau pipelines; and (iii) validate DEBACER applying it to the minutes of the Assembly of the Republic of Portugal. Our results show the effectiveness of DEBACER. Keywords: Natural Language Processing, Political Documents, Spoken Text Processing, Speech Split, Dialogue Partitioning.
description: Accepted on The 18th National Meeting on Artificial and Computational Intelligence (ENIAC 2021)
title: Climatology of Upper Thermospheric Daytime Neutral Winds from Satellite Observations
Creators: name: Emmert, John T.
Publisher: name: Utah State University
Year: 2001

description: We studied the global climatology of mid- and low-latitude F region daytime neutral winds using extensive measurements by the Wind Imaging Interferometer (WINDII) instrument on board the Upper Atmosphere Research Satellite (UARS). Quiet-time winds are mostly poleward and westward during the day, and are generally 5-20 m/s smaller in the longitudinal sector closest to the magnetic pole, compared to longitudinally averaged winds. The pre-noon zonal winds are less westward with increasing solar flux, while the post-noon meridional winds are less poleward . Our quiet-time results are in good agreement with the NCAR ThermosphereIonosphere- Electrodynamics General Circulation Model (TIEGCM).
We computed residual winds by subtracting quiet-time values calculated along the satellite orbit, which effectively removes average measurement bias. Using these residuals, we studied the average change in the winds under disturbed conditions. The zonal disturbance winds are mostly westward, increase with latitude, and have largest values in the late afternoon sector. In general, the meridional perturbation winds are equatorward, increase linearly with latitude, and decrease from morning to afternoon hours. The zonal and meridional perturbations increase roughly linearly with Kp. We developed empirical analytical models for the disturbance winds from 60° to the equator; these model winds are in poor agreement with results from the empirical Horizontal Wind Model. There are also important discrepancies between the average perturbations winds from WINDII and TIEGCM.
We studied the average time-dependent development of disturbance winds during geomagnetic storms. The onset of a storm is characterized by equatorward surges, mostly in the morning sector, that reach the equator in about 2 h. These surges lessen 5-6 h after the onset of a storm, but subsequently increase, reaching their largest values about 15 h after the start of the storm before leveling off or diminishing. Following the end of typical storms, the disturbance winds decrease quickly but oscillate for at least one 8-9 h cycle. We developed time-dependent analytical models of the disturbance winds as a function of the polar cap index at key storm time lags. Our results are consistent with predictions from theoretical models. (146 pages)