cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Morphological Analysis of the Polarized Synchrotron Emission with WMAP and Planck
Creators: name: Martire, F. A.
name: Banday, A. J.
name: Martínez-González, E.
name: Barreiro, R. B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The bright polarized synchrotron emission, away from the Galactic plane, originates mostly from filamentary structures. We implement a filament finder algorithm which allows the detection of bright elongated structures in polarized intensity maps. We analyse the sky at 23 and 30 GHz as observed respectively by WMAP and Planck. We identify 19 filaments, 13 of which have been previously observed. For each filament, we study the polarization fraction, finding values typically larger than for the areas outside the filaments, excluding the Galactic plane, and a fraction of about 30% is reached in two filaments. We study the polarization spectral indices of the filaments, and find a spectral index consistent with the values found in previous analysis (about -3.1) for more diffuse regions. Decomposing the polarization signals into the $E$ and $B$ families, we find that most of the filaments are detected in $P_E$, but not in $P_B$. We then focus on understanding the statistical properties of the diffuse regions of the synchrotron emission at 23 GHz. Using Minkowski functionals and tensors, we analyse the non-Gaussianity and statistical isotropy of the polarized intensity maps. For a sky coverage corresponding to 80% of the fainter emission, and on scales smaller than 6 degrees ($\ell > 30$), the deviations from Gaussianity and isotropy are significantly higher than 3$σ$. The level of deviation decreases for smaller scales, however, it remains significantly high for the lowest analised scale ($\sim 1.5^\circ$). When 60% sky coverage is analysed, we find that the deviations never exceed 3$σ$. Finally, we present a simple data-driven model to generate non-Gaussian and anisotropic simulations of the synchrotron polarized emission. The simulations are fitted in order to match the spectral and statistical properties of the faintest 80% sky coverage of the data maps.
description: 35 pages, 17 figures
Variance squeezing and entanglement of the XX central spin model
Creators: name: El-Orany, Faisal A. A.
name: Abdalla, M Sebawe
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we study the quantum properties for a system that consists of a central atom interacting with surrounding spins through the Heisenberg $XX$ couplings of equal strength. Employing the Heisenberg equations of motion we manage to derive an exact solution for the dynamical operators. We consider that the central atom and its surroundings are initially prepared in the excited state and in the coherent spin state, respectively. For this system, we investigate the evolution of variance squeezing and entanglement. The nonclassical effects have been remarked in the behavior of all components of the system. The atomic variance can exhibit revival-collapse phenomenon based on the value of the detuning parameter.
description: 19 pages,8 figures
Topological classification of closed convex sets in Frechet spaces
Creators: name: Banakh, Taras
name: Cauty, Robert
Publisher: name: arXiv
Year: 2010
Subjects: subject: Functional Analysis (math.FA)
subject: General Topology (math.GN)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57N17, 46A04

description: We prove that each non-separable completely metrizable convex subset of a Frechet space is homeomorphic to a Hilbert space. This resolves an old (more than 30 years) problem of infinite-dimensional topology. Combined with the topological classification of separable convex sets due to Klee, Dobrowoslki and Torunczyk, this result implies that each closed convex subset of a Frechet space is homemorphic to $[0,1]^n\times [0,1)^m\times l_2(k)$ for some cardinals $0\le n\leω$, $0\le m\le 1$ and $k\ge 0$.
description: 8 pages
title: Student Insights Report, Fall 2020
Creators: name: The Center for Student Analytics
Publisher: name: Utah State University
Year: 2020

description: For the past four years, the staff of the Center for Student Analytics have collaborated with dozens of units across campus to discover data-informed insights about what helps students succeed at Utah State University. The following pages highlight 20 of the most useful insights that we have come across over the past year, organized across five audiences—students, faculty, staff, university leadership, and prospective students. As you explore this report, we encourage you to see the student data as a window onto Utah State University itself. We have discovered that while big data helps us to understand how individual students are performing at our institution, it generally tells us a great deal more about the health of USU as an institution—an Aggie community that works diligently to cultivate opportunities for student learning, discovery, and engagement.
KdV breathers on a cnoidal wave background
Creators: name: Hoefer, Mark A.
name: Mucalica, Ana
name: Pelinovsky, Dmitry E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Using the Darboux transformation for the Korteweg-de Vries equation, we construct and analyze exact solutions describing the interaction of a solitary wave and a traveling cnoidal wave. Due to their unsteady, wavepacket-like character, these wave patterns are referred to as breathers. Both elevation (bright) and depression (dark) breather solutions are obtained. The nonlinear dispersion relations demonstrate that the bright (dark) breathers propagate faster (slower) than the background cnoidal wave. Two-soliton solutions are obtained in the limit of degeneration of the cnoidal wave. In the small amplitude regime, the dark breathers are accurately approximated by dark soliton solutions of the nonlinear Schrödinger equation. These results provide insight into recent experiments on soliton-dispersive shock wave interactions and soliton gases.
description: 29 pages, 8 figures
How to become an advice guru : the new age spirit of entrepreneurial selfhood
Creators: name: Forsey, Caitlin Andrea
Publisher: name: University of British Columbia
Year: 2015

description: This dissertation updates Max Weber’s (1904-05) celebrated thesis on the relationship between Protestantism and modern capitalism through an analysis of the interplay between the economic ethics of New Age spiritualism and the economic spirit of online entrepreneurialism. It extends Boltanski and Chiapello’s (1999) discussion of different mutations in the spirit of capitalism by analyzing 21st century religious and entrepreneurial texts, in addition to ethnographic data generated through participant observation and qualitative interviews with 28 professionals who are reinventing their identities as entrepreneurial “advice gurus” at a self-help seminar in the United States. The core argument of this dissertation is that beginning in the mid-1990s, a new spirit of capitalism emerged in the United States that stems from and finds resolution through New Age spiritual movements that blend Eastern and Western religious traditions. To this end, I examine how the calling of the entrepreneur has been supplemented by and transformed into the dharma of the advice guru through a thematic analysis of the manifest and latent content of two self-help texts that display the economic ethics of New Age spiritualism. I also demonstrate how New Age entrepreneurs blend the American ideal of self-invention with a certain popular interpretation of the Hindu principle of reincarnation to construct a relationship between spiritual transformation and upward social mobility. The charismatic form of leadership and sectarian characteristics of the self-help seminar are discussed for how they provide an ideal-typical portrait of the “network capital” (Elliott & Urry 2010) that is required to access this global community. To supplement my analysis of the economics ethics of New Age spiritualism, I draw on principles of poststructuralist theory to reveal the interpretive repertoires of entrepreneurial selfhood that participants use to construct ‘expert’ identities. I conclude with a discussion of how the rational pursuit of self-fulfillment emerges as a key spiritual and economic imperative that distinguishes the New Age spirit of capitalism in the early 21st century. [An errata to this thesis/dissertation was made available on 2016-10-24.]
NSC++: Non-Standard Cosmologies in C++
Creators: name: Karamitros, Dimitrios
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce NSC++, a header-only C++ library that simulates the evolution of the plasma and a decaying fluid in the early Universe. NSC++ can be used in C++ programs or called directly from python scripts without significant overhead. There is no special installation process or external dependencies. Furthermore, there are example programs that can be modified to handle several cases.
description: 18 pages; 3 figures; 4 tables; The stable version of the library can be found at https://github.com/dkaramit/NSCpp/tree/stable. v2: Added reference; Minor corrections to text. v3: Minor corrections, matches published version
Photo-production of lowest $Σ^*_{1/2^-}$ state within the Regge-effective Lagrangian approach
Creators: name: Lyu, Yun-He
name: Zhang, Han
name: Wei, Neng-Chang
name: Ke, Bai-Cian
name: Wang, En
name: Xie, Ju-Jun
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Since the lowest $Σ^{*}$ state, with quantum numbers spin-parity $J^{P} =1/2^{-}$, is far from established experimentally and theoretically, we have performed a theoretical study on the $Σ^*_{1/2^-}$ photo-production within the Regge-effective Lagrangian approach. Taking into account that the $Σ^*_{1/2^-}$ couples to the $\bar{K}N$ channel, we have considered the contributions from the $t$-channel $K$ exchange diagram. Moreover, these contributions from $t$-channel $K^*$ exchange, $s$-channel nucleon pole, $u$-channel $Σ$ exchange, and the contact term, are considered. The differential and total cross sections of the process $γn \to K^{+}Σ^{*-}_{1/2^-}$ are predicted with our model parameters. The results should be helpful to search for the $Σ^*_{1/2^-}$ state experimentally in future.
description: 7 pages, 4 figures
title: Connections Impact on Student Persistence: Impact Report Spring 2015 to Fall 2018
Creators: name: Hagman, Amanda M.
name: Kesler, Heidi
name: Sanders, Matt
name: Colver, Mitchell
Publisher: name: Utah State University
Year: 2020

description: Connections is Utah State University's (USU) first-year seminary. A primary objective of Connections is student persistence. It is designed to help students become learners. While being a learner is not synonymous with being a college student, it aligns students’ expectations with what is required to succeed in college and at USU. This impact report explores the influence of Connections participation on student persistence to the next term. Participation in Connections is associated with a 1.4% increase in persistence to the next term. The positive impact of Connections is increasing with strategic programmatic changes.
Index Information Algorithm with Local Tuning for Solving Multidimensional Global Optimization Problems with Multiextremal Constraints
Creators: name: Sergeyev, Yaroslav D.
name: Pugliese, Paolo
name: Famularo, Domenico
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 65K05, 90C26

description: Multidimensional optimization problems where the objective function and the constraints are multiextremal non-differentiable Lipschitz functions (with unknown Lipschitz constants) and the feasible region is a finite collection of robust nonconvex subregions are considered. Both the objective function and the constraints may be partially defined. To solve such problems an algorithm is proposed, that uses Peano space-filling curves and the index scheme to reduce the original problem to a Hölder one-dimensional one. Local tuning on the behaviour of the objective function and constraints is used during the work of the global optimization procedure in order to accelerate the search. The method neither uses penalty coefficients nor additional variables. Convergence conditions are established. Numerical experiments confirm the good performance of the technique.
description: 29 pages, 5 figures
Laboratory study of the failed torus mechanism in arched, line-tied, magnetic flux ropes
Creators: name: Alt, Andrew
name: Ji, Hantao
name: Yoo, Jongsoo
name: Bose, Sayak
name: Goodman, Aaron
name: Yamada, Masaaki
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Coronal mass ejections (CMEs) are some of the most energetic and violent events in our solar system. The prediction and understanding of CMEs is of particular importance due to the impact that they can have on Earth-based satellite systems, and in extreme cases, ground-based electronics. CMEs often occur when long-lived magnetic flux ropes (MFRs) anchored to the solar surface destabilize and erupt away from the Sun. One potential cause for these eruptions is an ideal magnetohydrodynamic (MHD) instability such as the kink or torus instability. Previous experiments on the Magnetic Reconnection eXperiment (MRX) revealed a class of MFRs that were torus-unstable but kink-stable, which failed to erupt. These "failed-tori" went through a process similar to Taylor relaxation where the toroidal current was redistributed before the eruption ultimately failed. We have investigated this behavior through additional diagnostics that measure the current distribution at the foot points and the energy distribution before and after an event. These measurements indicate that ideal MHD effects are sufficient to explain the energy distribution changes during failed torus events. This excludes Taylor relaxation as a possible mechanism of current redistribution during an event. A new model that only requires non-ideal effects in a thin layer above the electrodes is presented to explain the observed phenomena. This work broadens our understanding of the stability of MFRs and the mechanism behind the failed torus through the improved prediction of the torus instability and through new diagnostics to measure the energy inventory and current profile at the foot points.
description: 20 pages, 18 figures. Submitted to Physics of Plasmas
title: Passport Experience: Impact Analytics Fall 2014 to Fall 2018
Creators: name: Hagman, Amanda M.
name: Jensen, Nate
name: Simmons, Lisa
name: Anderson, Janet
name: Dickamore, Erik
Publisher: name: Utah State University
Year: 2020

description: Utah State University (USU) dedicates substantial resources to support student transition to higher education. The Passport Experience cuts across all university domains to support early student participation in curricular, co-curricular, and extra-curricular activities. Students are invited to attend a variety of events, when milestones are reached, students are rewarded. Persistence is a primary objective of the Passport Experience. The Passport Experience helps students develop an increased awareness of campus events, broad their engagement in the university experience, and become more involved in the University community. This report explores the association between the Passport Experience and students’ persistence toward graduation. METHODS: Passport participation was captured through card swipes. Students who had enough records of Passport participation to receive a reward were compared to similar students who had no record of participation. Students were matched for comparison using prediction- based propensity score matching. Students were matched with non-users based on their persistence predication and their propensity to participate. FINDINGS: Students were 97% similar following matching. Participating and comparison students were compared using difference-in-difference testing. Students who participated were significantly more likely to persist at USU than similar students who did not (DID = 0.054, p < .001). The unstandardized effect size can be estimated through student impact. It is estimated that the Passport Experience assisted in retaining 6 (CI: 1 – 9) students each year who were otherwise not expected to persist. When data collection procedures were improved in 2017, the impact of the Passport Experience increased to an estimated retention of 37 (CI: 1 to 72) students. Further tracking of this program is warrented given improved data collection and new practices.
Correlations between primary maternal preoccupation, maternal depression and anxiety, and infant pain behaviour self-regulation
Creators: name: Bourdon, Brianne Juella
Publisher: name: University of British Columbia
Year: 2015

description: Identifying mechanisms that may underlie alteration in infant pain behaviour is important for preventing the adverse impacts of routine infant pain. While it is known that prenatal maternal depression and anxiety (MDA) predicts postnatal alteration in infant pain behaviour self-regulation, the contribution of prenatal primary maternal preoccupation (PMP) on infant pain behaviour remains unknown. The twofold aims of this secondary analysis study were to compare measures of PMP between mothers with and without MDA during the second trimester of pregnancy and relationships between and amongst prenatal MDA and PMP and postnatal infant pain behaviour self-regulation in a matched sample of 21 mother-infant dyads. Analyses of MDA were based on data from the EPDS, HAM-D, and HAM-A tools that mothers completed at second trimester and the analysis of three measures of alteration in infant pain behaviour self-regulation (strained/erratic limb movement, immobility, and weak/exhausted cry) from the original study. The analysis of PMP measures were based on the sum of PMP scale scores for each of the seven PMP behaviours and a total PMP score calculated across the seven behaviours. As hypothesized, mothers with MDA had significantly higher PMP scores at second trimester and excessive PMP predicted strained/erratic limb movement and immobility in infants with prenatal MDA exposure. These findings support and extend findings of the original study. They suggest that PMP and MDA are comorbid during pregnancy and that both may contribute to infant pain behaviour dysregulation and delay in recovery from pain. More research is required to help validate the preliminary PMP study findings. Future studies should include concurrent analysis of prenatal data from mothers (MDA, PMP) and postnatal data from mothers (caregiving behaviour, salivary cortisol) and infant (changes in heart rate, salivary cortisol, facial action, behavioural self-regulation). This will further understanding of the underlying role that MDA and PMP play on infant pain response and will help inform targeted development of infant pain interventions sensitive to the needs of mothers with prenatal mental health conditions and their infants as appropriate.
title: How do USU Students Use University Support Services?
Creators: name: Hagman, Amanda M.
name: Lewis, Meghan
name: Swainston, Kristi
name: Colver, Mitchell
Publisher: name: Utah State University
Year: 2020

description: The central mission of USU is to be one of the nation’s premier student-centered universities. This is accomplished by fostering academics and offering opportunities to expand students’ vision of the world around them through co- and extra-curricular activities. These auxiliary activities are designed to support academic achievement and to engage students in meaningful opportunities to practice and enhance their personal and professional well-being. This analysis describes how students are using co- and extra-curricular services. It investigates the most salient student-facing programming in supporting student retention.
Hopf algebras and polynomial identities
Creators: name: Kassel, Christian
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16R50, 16T05, 16T20

description: This is a survey of results obtained jointly with E. Aljadeff and published in Adv. Math. 218 (2008), 1453-1495. We explain how to set up a theory of polynomial identities for comodule algebras over a Hopf algebra, and concentrate on the universal comodule algebra constructed from the identities satisfied by a given comodule algebra. All concepts are illustrated with various examples.
description: 14 pages; to appear in Proc. Conf. "Quantum Groups and Quantum Topology", RIMS, Kyoto University, April 2010
title: Writing Fellows: Impact Analysis Fall 2015 to Spring 2019
Creators: name: Hagman, Amanda M.
name: Foust, Julie
name: Dickamore, Erik
name: Hoopes, Hayden
Publisher: name: Utah State University
Year: 2020

description: The Writing Fellows program strategically places high performing writing mentors in courses with rigorous writing requirements. Writing Fellows work with each student in a course by reviewing their writing and offering mentoring to improve their written communication skills. Persistence is a secondary objective of the Writing Fellow program. As such, an impact evaluation on persistence should only be used as part of an evaluation of the influence of the Writing Fellows program on student wellbeing. This impact evaluation on student persistence found that students in courses with a Writing Fellow experienced a significant increase in persistence to the next term 1.2%.
Three energy scales characterizing the competing pseudogap state, the incoherent, and the coherent superconducting state in high-Tc cuprates
Creators: name: Okada, Y.
name: Kawaguchi, T.
name: Ohkawa, M.
name: Ishizaka, K.
name: Takeuchi, T.
name: Shin, S.
name: Ikuta, H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have studied the momentum dependence of the energy gap of Bi2(Sr,R)2CuOy by angleresolved photoemission spectroscopy (ARPES), particularly focusing on the difference between R=La and Eu. By comparing the gap function and characteristic temperatures between the two sets of samples, we show that there exist three distinct energy scales, Δpg, Δsc0, and Δeff sc0, which correspond to T* (pseudogap temperature), Tonset (onset temperature of fluctuating superconductivity), and Tc (critical temperature of coherent superconductivity). The results not only support the existence of a pseudogap state below T* that competes with superconductivity but also the duality of competition and superconducting fluctuation at momenta around the antinode below Tonset.
description: accepted in Phys. Rev. B
Stromverbrauch der Gebäudeautomation: eine Berechnungsmethodik
Creators: name: Kräuchi, Philipp (Autor/in)
name: Steiger, Olivier (Autor/in)
Publisher: name: Zenodo
Year: 2018
Subjects: Gebäudeautomation
Stromverbrauch
Berechnungstool

description: In diesem Paper wird eine Berechnungsmethodik für den Stromverbrauch der Gebäudeautomation präsentiert. Die Methodik erlaubt insbesondere die Speiseverluste realitätsnah zu quantifizieren. Dies wird erreicht, indem – von den Feldgeräten ausgehend – das gesamte Automationssystem durchschritten wird bis zum Netzanschluss.
Die Berechnungsmethodik kommt im BFE-Projekt «Musterbeispiele von Gebäudeautomationssystemen mit geringem Stromverbrauch» zum Einsatz. Im Projekt wird anhand realer Bauten ausgelotet, mit welchen Systemtopologien und Produkte-Typen sich tiefe Stromverbrauchswerte erreichen lassen – ohne Abstriche bei der Funktionalität. Das Projekt vertieft das BFE-Vorgängerprojekt «Eigenverbrauch der Gebäudeautomation».
description: + ID der Publikation: hslu_56674 + Art des Beitrages: Wissenschaftliche Medien + Sprache: Deutsch + Letzte Aktualisierung: 2019-03-11 09:09:58
Turning exercise into medicine : exploring the feasibility of a 3 step physician workshop to promote the physical activity prescription behaviours of family physicians
Creators: name: Windt, Johann Dirk
Publisher: name: University of British Columbia
Year: 2015

description: Objective: To investigate the feasibility of an educational workshop with the provision of practical tools to change the proportion of family physicians in our sample who provided their patients with written physical activity prescriptions. Design: A pre-post study. Setting: Abbotsford and Mission, British Columbia. Participants: 25 family physicians registered with the Abbotsford or Mission Divisions of Family Practice. Intervention: A three-hour educational workshop for family physicians combined with practical tools to facilitate physical activity prescription. The educational content of the workshop included 1) assessing patients’ physical activity levels, 2) using motivational interviewing techniques to encourage physical activity, and 3) providing written physical activity prescriptions when appropriate. Tools to facilitate physician behaviour changes included a 1) ‘physical activity vital sign’, a measure of patient self-reported physical activity, and 2) copies of the “Exercise Prescription and Referral Tool” designed by the Exercise is Medicine Canadian Taskforce, a written prescription pad for physicians to provide physical activity prescriptions to their patients. Participating physicians completed a bespoke questionnaire before and four weeks after their attendance at the workshop. Outcome Measures: The feasibility of the intervention was ascertained by assessing changes in the proportion of family physicians who reported providing written physical activity prescriptions at four week follow up, compared to baseline. Exploratory outcomes included changes in physicians’: 1) other physical activity prescription behaviours, 2) the perceived importance of various barriers to physical activity prescription, 3) knowledge and confidence regarding physical activity prescription, 4) knowledge of the Canadian Physical Activity Guidelines and 5) self-reported physical activity levels. McNemar’s test evaluated changes in proportions before and after the workshop, while Wilcoxon signed-rank tests evaluated changes in Likert data. Results: Twenty five family physicians completed the baseline questionnaire and attended the workshop, with 100% follow up response rate. The proportion of family physicians who reported providing written physical activity prescriptions in their clinical practice increased from 10 (40%) at baseline to 17 (68%) four weeks after the intervention. Conclusion: Educational workshops combined with practical tools appear to be a feasible method to encourage the use of written physical activity prescriptions among family physicians in this setting.
title: Writing Center: Impact analysis Fall 2014 to Fall 2018
Creators: name: Hagman, Amanda M.
name: Becker, Kendall
name: Andersen, Susan B
name: Coulbrooke, Star
name: Dickamore, Erik
name: Heaps, Jasilyn
Publisher: name: Utah State University
Year: 2020

description: The Utah State University (USU) Writing Center is dedicated to empowering students to express their knowledge and ideas in writing. Their approach promotes academic inquiry, critical thinking, and expressions of diversity. While research and evaluation suggest that the Writing Center significantly impacts student academic performance, the impact on student persistence is not yet clear. This report explores the association between USU’s Writing Center and students’ persistence toward graduation. METHODS: Students’ Writing Center use was captured through student log-ins at writing appointments. Students who had a record of using the Writing Center were compared to similar students who did not have a record of Writing Center use. Students were matched for comparison using prediction-based propensity score matching. Students were matched with non-users based on their persistence predication and their propensity to participate. FINDINGS: Students were 97% similar following matching. Participating and comparison students were compared using difference-in-difference testing. Students who used the Writing Center were significantly more likely to persist at USU than similar students who did not use the Writing Center (DID = 0.031, p < .001). The unstandardized effect size can be estimated through student impact. It is estimated that Writing Center resources and services assisted in retaining 17 (CI: 3 – 32) students each year who were otherwise not expected to persist.
title: Fraternity & Sorority Life: Impact analysis Spring 2016 to Fall 2019
Creators: name: Dickamore, Erik
name: Eidenschink, Paige
name: Hagman, Amanda M.
Publisher: name: Utah State University
Year: 2020

description: Fraternity and Sorority Life (FSL) is a valued part of the USU community It connects students with leadership and philanthropic opportunities throughout their time at university. Many students cite their time spent associated with FSL as one of the biggest contributing factors of their university experience. METHODS: Student’s membership in a FSL is recorded each semester on rosters. These rosters were used in identifying which students participated in FSL. Students were compared using prediction-based propensity score matching. Students who participated in FSL were matched with non-participating students based on their persistence predication and their propensity to participate. FINDINGS: Students were 98% similar following matching. Participating and comparison students were compared using difference-in-difference testing. Students who participated in FSL were significantly more likely to persist at USU than similar students who did not (DID = 0.0268, p < .001). The unstandardized effect size can be estimated through student impact. It is estimated that FSL assisted in retaining 20 (CI: 10 to 30) students each year who were otherwise not expected to persist.
Probing non-linear MHD stability of the EDA H-mode in ASDEX Upgrade
Creators: name: Cathey, A
name: Hoelzl, M
name: Gil, L
name: Dunne, MG
name: Harrer, GF
name: Huijsmans, GTA
name: Kalis, J
name: Lackner, K
name: Pamela, SJP
name: Wolfrum, E
name: Günter, S
name: team, the JOREK
name: Team, the ASDEX Upgrade
name: Team, the EUROfusion MST1
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Regimes of operation in tokamaks that are devoid of large ELMs have to be better understood to extrapolate their applicability to reactor-relevant devices. This paper describes non-linear extended MHD simulations that use an experimental equilibrium from an EDA H-mode in ASDEX Upgrade. Linear ideal MHD analysis indicates that the operational point lies slightly inside of the stable region. The non-linear simulations with the visco-resistive extended MHD code, JOREK, sustain non-axisymmetric perturbations that are linearly most unstable with toroidal mode numbers of n = \{6 \dots 9\}, but non-linearly higher and lower n become driven and the low-n become dominant. The poloidal mode velocity during the linear phase is found to correspond to the expected velocity for resistive ballooning modes. The perturbations that exist in the simulations have somewhat smaller poloidal wavenumbers (k_θ \sim 0.1 to 0.5 cm^{-1} ) than the experimental expectations for the quasi-coherent mode in EDA, and cause non-negligible transport in both the heat and particle channels. In the transition from linear to non-linear phase, the mode frequency chirps down from approximately 35 kHz to 13 kHz, which corresponds approximately to the lower end of frequencies that are typically observed in EDA H-modes in ASDEX Upgrade.
Creating active mathematics learning opportunities for students in China : an action research project in one Chinese high school
Creators: name: Yu, Ling
Publisher: name: University of British Columbia
Year: 2015

description: In order to keep pace with the world, China has introduced eight different National Curriculum Reforms (NCR) in basic education since 1949. In the eighth NCR, long-term success of students became the most important and fundamental objective of the reform. More importantly, with respect to mathematics learning, the most recent reform refers not only the acquisition of knowledge, but also refers to the experience of problem solving, communication, and cooperation. Amongst the various factors that may have an impact on mathematics teaching and learning, active learning stands out as having the potential to fulfill students’ long-term development. In the eighth NCR, active learning means learning through doing, learning through experiencing, learning through practicing, and engagement (Li, 2008). However, transitioning from policy design to policy implementation is not easy. In mathematics education, teachers still have to face many challenges in improving their own teaching and advancing their own professional learning. Considering the context of China, the aim of this research is therefore to explore how high school mathematics teachers in China create active learning opportunities for their students with participation in an action research project. This action research study was conducted at Renhe High School and involved 3 volunteer Grade 10 mathematics teachers and their students (128 students in total). This thesis reports the strategies that teachers have tried during the study. According to three participating teachers’ experiences, the main strategies that teachers have tried include: introducing activity into class; small group cooperative learning; peer teaching; problem-based learning; and technology-enhanced learning. Consequently, by participating in the research, teachers’ experiences revealed various understandings of their own pedagogy, which were influenced or changed during the research. Further, the results of the study show that: (1) Introducing action research approaches could help teachers better understand and utilize “The Standards” to create active learning opportunities for students; (2) Collaboration among teachers enable teachers to examine their classroom instructions, revise current practices and develop new strategies; (3) A supportive school culture can help to overcome the pressure from NCEE (National Collage Entrance Examination), which often represents an overwhelming influence of classroom practice.
Temporal localized states and square-waves in semiconductor micro-resonators with strong time-delayed feedback
Creators: name: Koch, Elias R.
name: Seidel, Thomas G.
name: Javaloyes, Julien
name: Gurevich, Svetlana V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper we study the dynamics of a vertically-emitting micro-cavity operated in the Gires-Tournois regime that contains a semiconductor quantum-well and that is subjected to strong time-delayed optical feedback and detuned optical injection. Using a first principle time-delay model for the optical response, we disclose sets of multistable dark and bright temporal localized states coexisting on their respective bistable homogeneous backgrounds. In the case of anti-resonant optical feedback, we disclose square-waves with a periodic of twice the round-trip in the external cavity. Finally, we perform a multiple time-scale analysis in the good cavity limit. The resulting normal form is in good agreement with the original time-delayed model.
title: New Student Orientation: Impact Analysis Fall 2017 to Spring 2019
Creators: name: Hagman, Amanda M.
name: Van den Akker, Jacob
name: Dickamore, Erik
name: Simmons, Lisa
Publisher: name: Utah State University
Year: 2020

description: The transition to university represents a major life change more incoming students. To facilitate this transition, USU adopted a phased-orientation system that provides students information justin- time for use. Currently, Module 3 can be completed either in-person or online. This analysis explores both the impact of the phased-orientation modules and the impact of completing Module 3 online verse in-person on student persistence to the next term. METHODS: First students who completed Module 3 online were compared to students who completed Module 3 in-person. Next students who completed all 5 modules were compared to students who only completed the required modules. Students were compared using prediction-based propensity score matching (PPSM). Students were matched with students by their persistence prediction and their propensity to participate. The groups were compared using difference- in-difference testing (DID). FINDINGS: Students were 99% similar following matching for both analyses. Students who completed Module 3 online did not differ in terms of persistence from students who completed Module 3 in-person. Student who completed all 5 modules were significantly more likely to persist to the next semester compared to similar students who did not (DID = 3.62%, CI: 2.12% – 5.12%).
Large margin filtering for signal sequence labeling
Creators: name: Flamary, Rémi
name: Labbé, Benjamin
name: Rakotomamonjy, Alain
Publisher: name: arXiv
Year: 2011
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Signal Sequence Labeling consists in predicting a sequence of labels given an observed sequence of samples. A naive way is to filter the signal in order to reduce the noise and to apply a classification algorithm on the filtered samples. We propose in this paper to jointly learn the filter with the classifier leading to a large margin filtering for classification. This method allows to learn the optimal cutoff frequency and phase of the filter that may be different from zero. Two methods are proposed and tested on a toy dataset and on a real life BCI dataset from BCI Competition III.
description: IEEE International Conference on Acoustics Speech and Signal Processing (ICASSP), 2010, Dallas : United States (2010)
Hot Big Bang from inflation without the inflaton reheating
Creators: name: Buchel, Alex
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: According to the standard lore, a prolonged inflation leaves a quantum field theory in a cold, low entropy state. Thus, some mechanism is needed to reheat this post-inflationary state, leaving a hot, thermal, radiation-dominated Universe. Typically, reheating is achieved coupling the inflaton field to the QFT degrees of freedom. We argue that the nonequilibrium dynamics of a non-conformal QFT in (post-)inflationary background space-time can produce hot quark-gluon plasma with the reheating temperature of order the inflationary Hubble scale, without the inflaton coupling.
description: 10 pages, 1 figure. v2: refs and supplemental material added
Understanding Jet Charge
Creators: name: Kang, Zhong-Bo
name: Larkoski, Andrew J.
name: Yang, Jinghong
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The jet charge is an old observable that has proven uniquely useful for discrimination of jets initiated by different flavors of light quarks, for example. In this Letter, we propose an approach to understanding the jet charge by establishing simple, robust assumptions that hold to good approximation non-perturbatively, such as isospin conservation and large particle multiplicity in the jets, forgoing any attempt at a perturbative analysis. From these assumptions, the jet charge distribution with fixed particle multiplicity takes the form of a Gaussian by the central limit theorem and whose mean and variance are related to fractional-power moments of single particle energy distributions. These results make several concrete predictions for the scaling of the jet charge with the multiplicity, explaining many of the results already in the literature, and new results we validate in Monte Carlo simulation.
description: 5 pages + 4 pages supplemental material, 5 figures + 16 figures in supplemental material; v2: minor clarifications and justification added, version accepted to PRL; v3: fixed broken citation links
Vergleichende Untersuchungen zur Randspaltdetektion
Creators: name: Bredemeyer, Cynthia Natascha
Publisher: name: Universität Rostock
Year: 2020
Subjects: subject: 610 Medical sciences Medicine

description: Die Zielsetzung der Studie war der Vergleich von zwei Verfahren der Abformung (optisch vs. konventionell) durch messtechnische Erfassung des Randspaltes bei CAD/CAM–gefertigten Vollkeramikkappen in Vitro. Eine präzise Erfassung der Präparationsgrenze am Pfeilerzahn ist in ihrer Genauigkeit essentiell für die Erstellung einer langlebigen Restauration. Die Vermessung der Randspaltgröße wurde gemäß der Nomenklatur von Holmes et.al. (1989) durchgeführt. Die optische Abformmethode zeigte statistisch signifikant genauere Ergebnisse im Vergleich zur konventionellen Doppelmischabformung.
Long ranged singlet proximity effect in ferromagnetic nanowires
Creators: name: Konschelle, F.
name: Cayssol, J.
name: Buzdin, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently a long ranged superconductor/ferromagnet (S/F) proximity effect has been reported in Co crystalline nanowires [1, Nature, 6 389 (2010)]. Since the authors of [1] take care to avoid the existence of magnetic domains, the triplet character of the long ranged proximity effect is improbable. Here we demonstrate that in the one-dimensional ballistic regime the standard singlet S/F proximity effect becomes long ranged. We provide an exact solution for the decay of the superconducting correlations near critical temperature ($T_{c}$) and for arbitrary impurities concentration. In particular we find a specific regime, between the diffusive and ballistic ones, where the decay length is simply the electronic mean-free path. Finally possible experiments which could permit to elucidate the nature of the observed long ranged proximity effect in Co nanowires are discussed.
description: 4 pages
The Simplest Oscillon and its Sphaleron
Creators: name: Manton, N. S.
name: Romańczukiewicz, T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Oscillons in a simple, 1-dimensional scalar field theory with a cubic potential are discussed. The theory has a classical sphaleron, whose decay generates a version of the oscillon. A good approximation to the small-amplitude oscillon is constructed explicitly using the asymptotic expansion of Fodor et al., but for larger amplitudes a better approximation uses the discrete, unstable and stable deformation modes of the sphaleron.
description: 26 pages, 18 figures
Kac-Ward solution of the 2D classical and 1D quantum Ising models
Creators: name: Athanasopoulos, Georgios
name: Ueltschi, Daniel
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 82B05, 82B20, 82B23

description: We give a rigorous derivation of the free energy of (i) the classical Ising model on the triangular lattice with translation-invariant coupling constants, and (ii) the one-dimensional quantum Ising model. We use the method of Kac and Ward. The novel aspect is that the coupling constants may have negative signs. We describe the logarithmic singularity of the specific heat of the classical model and the validity of the Cimasoni--Duminil-Copin--Li formula for the critical temperature. We also discuss the quantum phase transition of the quantum model.
description: 19 pages, 4 figures
Implementing digital control to improve control bandwidth and disturbance rejection on a LLC resonant DC-DC power converter.
Creators: name: Lei, Yubo
Publisher: name: University of British Columbia
Year: 2015

description: In this thesis, the implementation of an adaptive digital control scheme and the development process to implement it for an existing analog controlled LLC resonant converter is presented. The goal is to improve the dynamic performance (aka control bandwidth) and the disturbance rejection ability of the closed loop system using digital control. A brief analysis of the experimented on LLC resonant converter and simulations of its control-to-output frequency response characteristics under different operating conditions are initially performed in order to show its non-linear behavior. Then the design process and requirements for both the digital and analog components to make the existing LLC converter compatible with a digital signal microcontroller is presented in detail. The digital signal microcontroller (DSC), ADC, DPWM, sampling period, interrupt service routine (ISR), and the 2P2Z digital compensator implementation will be overviewed. Analog components such as the voltage/current sensors, the VCO, and other analog interfacing components will also be presented. After that, the complete design process to achieve optimized digital compensators for several different operating points is presented. This design process introduces the method of using either the uncompensated loop-gain frequency response data collected empirically from the physical converter or from a PSIM simulation and then using MATLAB’s System Identification software toolbox to generate an estimated mathematical model based on frequency response data. A digital compensator is then designed based on the estimated mathematical model. A comparison between the PSIM simulation and the empirical data of the LLC converter’s plant frequency response for several different operating conditions is also presented. A digital adaptive compensator algorithm is implemented so that the most optimized compensator design for a given converter operating range is selected. The algorithm uses the output voltage and current to determine the operating point of the converter, which then access a software look-up-table (LUT) for the optimized compensator. A complete prototype is built to experimentally validate the digital design process and the performance results of a classical single compensator design is compared with the adaptive compensator design in order to show the benefits of the adaptive compensator control scheme.