cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Supplementary document for Accurate Determination of Fractional Retardations in Photoelasticity through Digital Fringe Multiplication - 5479910.pdf
Creators: name: Swain, Digendra
name: Thomas, Binu
name: Selvan, Karthigai
name: Philip, Jeby
Publisher: name: Optica Publishing Group
Year: 2021
Subjects: Uncategorized

description: Supplemental document
title: Numerical Simulations of a Nonlinear Transmission Line
Creators: name: Rogers, Stuart
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 2008

description: This thesis investigates wave propagation along a nonlinear transmission line having a voltage-dependent capacitance. The telegrapher's equations that model wave propagation along such a transmission line are derived and shown to represent a nonlinear hyperbolic system of balance laws. The Lax-Friedrichs, Lax-Wendroff, and hybrid numerical schemes for obtaining approximate solutions to nonlinear hyperbolic systems of balance laws are presented, analyzed, and applied to the nonlinear telegrapher's equations. The Lax-Wendroff and hybrid schemes are invoked to numerically simulate wave propagation along a nonlinear transmission line. Simulations obtained via the hybrid scheme are used to briefly study the potential application of a nonlinear transmission line as a pulse generator.

Since they may generate ultra short (nanosecond) rise time voltage waveforms, nonlinear transmission lines could have applicability to pulsed power systems and high power microwaves. Moreover, short duration, high intensity voltage pulses have been demonstrated to penetrate biological cells and affect the internal organelles. Thus, such voltage shaping could provide the technological tools for intracellular manipulation and several potential biomedical engineering applications.

Though only one particular voltage-dependent capacitance was selected for the nonlinear transmission line analysis, the method described is general. Other voltage dependencies could be realized through suitable mate1ial tailoring, by using composites, and by sectioning the transmission line layout. These alterations would afford relative assessments of voltage wave propagation in nonlinear transmission lines, and also provide for analyses of "shock wave" generation.
A Deep Learning Approach for Meter-Scale Air Quality Estimation in Urban Environments Using Very High-Spatial-Resolution Satellite Imagery
Creators: name: Sorek-Hamer, Meytar
name: Von Pohle, Michael
name: Sahasrabhojanee, Adwait
name: Akbari Asanjan, Ata
name: Deardorff, Emily
name: Suel, Esra
name: Lingenfelter, Violet
name: Das, Kamalika
name: Oza, Nikunj C.
name: Ezzati, Majid
name: Brauer, Michael (Of University Of British Columbia)
Publisher: name: Multidisciplinary Digital Publishing Institute
Year: 2022

description: High-spatial-resolution air quality (AQ) mapping is important for identifying pollution sources to facilitate local action. Some of the most populated cities in the world are not equipped with the infrastructure required to monitor AQ levels on the ground and must rely on other sources, such as satellite derived estimates, to monitor AQ. Current satellite-data-based models provide AQ mapping on a kilometer scale at best. In this study, we focus on producing hundred-meter-scale AQ maps for urban environments in developed cities. We examined the feasibility of an image-based object-detection analysis approach using very high-spatial-resolution (2.5 m) commercial satellite imagery. We fed the satellite imagery to a deep neural network (DNN) to learn the association between visual urban features and air pollutants. The developed model, which solely uses satellite imagery, was tested and evaluated using both ground monitoring observations and land-use regression modeled PM2.5 and NO2 concentrations over London, Vancouver (BC), Los Angeles, and New York City. The results demonstrate a low error with a total RMSE < 2 µg/m3 and highlight the contribution of specific urban features, such as green areas and roads, to continuous hundred-meter-scale AQ estimations. This approach offers promise for scaling to global applications in developed and developing urban environments. Further analysis on domain transferability will enable application of a parsimonious model based merely on satellite images to create hundred-meter-scale AQ maps in developing cities, where current and historical ground data are limited.
Ideen zur Verbesserung des Bodenbewusstseins
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: subject: Bodenschutz
subject: Öffentlichkeitsarbeit
subject: Bodenbewusstsein
subject: Bodenaktionen
subject: Boden | Fläche

description: Boden ist ein kostbares, gemeinschaftliches und schützenswertes Gut. Das Bewusstsein dafür überzeugend zu vermitteln und ein entsprechendes Handeln in der Öffentlichkeit und der Politik zu bewirken, sind wichtige Anliegen des Bundesministeriums für Umwelt, Naturschutz, Bau und Reaktorsicherheit (BMUB) und des Umweltbundesamtes (UBA). Vor diesem Hintergrund setzte sich das Forschungsvorhaben damit auseinander, welche Maßnahmen und Aktivitäten zu einer verstärkten Wahrnehmung des Bodens und zu einem langfristig veränderten bodengerechten Handeln und Denken in der Politik und der Öffentlichkeit führen und wie die konkreten Erfolgsfaktoren aussehen. Darüber hinaus wurde geprüft, wie BMUB/UBA aus Bundessicht zur Verbesserung des Bodenbewusstseins beitragen könnenund welche konkreten Handlungsfelder und Strategien auf Bundesebene zu empfehlen sind.Untersucht wurde dazu eine Auswahl von 27 Aktionen und Kampagnen zur Verbesserung des Bodenbewusstseins, die insgesamt möglichst viele Zielgruppen abdecken und ein breites Spektrum unterschiedlicher Maß-nahmen zur Bodenbewusstseinsbildung repräsentieren (z.B. Aktionstage, Bodenerlebnispfade, Ausstellungen, schulische Aktivitäten). Aus den Ergebnissen wurden Handlungsempfehlungen für künftige Aktionen und Kampagnen abgeleitet, die eine wesentliche Grundlage für eine Arbeitshilfe des Umweltbundesamtes für Behörden, Gremien und Verbände bilden.
Quelle: http://www.umweltbundesamt.de/
description: Boden ist ein kostbares, gemeinschaftliches und schützenswertes Gut. Das Bewusstsein dafür überzeugend zu vermitteln und ein entsprechendes Handeln in der Öffentlichkeit und der Poli-tik zu bewirken, sind wichtige Anliegen des Bundesministeriums für Umwelt, Naturschutz, Bau und Reaktorsicherheit (⁠BMUB⁠) und des Umweltbundesamtes (⁠UBA⁠). Vor diesem Hintergrund setzte sich das Forschungsvorhaben damit auseinander, welche Maßnahmen und Aktivitäten zu einer verstärkten Wahrnehmung des Bodens und zu einem langfristig veränderten bodenge-rechten Handeln und Denken in der Politik und der Öffentlichkeit führen und wie die konkre-ten Erfolgsfaktoren aussehen. Darüber hinaus wurde geprüft, wie BMUB/UBA aus Bundessicht zur Verbesserung des Bodenbewusstseins beitragen können und welche konkreten Handlungs-felder und Strategien auf Bundesebene zu empfehlen sind. Untersucht wurde dazu eine Aus-wahl von 27 Aktionen und Kampagnen zur Verbesserung des Bodenbewusstseins, die insge-samt möglichst viele Zielgruppen abdecken und ein breites Spektrum unterschiedlicher Maß-nahmen zur Bodenbewusstseinsbildung repräsentieren (z.B. Aktionstage, Bodenerlebnispfade, Ausstellungen, schulische Aktivitäten). Aus den Ergebnissen wurden Handlungsempfehlungen für künftige Aktionen und Kampagnen abgeleitet, die eine wesentliche Grundlage für eine Ar-beitshilfe des Umweltbundesamtes für Behörden, Gremien und Verbände bilden.
Development and pilot evaluation of an educational session to support sparing opioid prescriptions to opioid naïve patients in a Canadian primary care setting
Creators: name: Narayan, S.
name: Rizarrdo, S.
name: Hamilton, Michee-Ana
name: Cooper, Ian R.
name: Maclure, Malcolm
name: McCracken, Rita
name: Klimas, Jan
Publisher: name: Oxford Academic
Year: 2023

description: Background: Prescribing rates of some analgesics decreased during the public health crisis. Yet, up to a quarter of opioid-naïve persons prescribed opioids for non-cancer pain develop prescription opioid use disorder. We, therefore, sought to evaluate a pilot educational session to support primary care-based sparing of opioid analgesics for non-cancer pain among opioid-naïve patients in British Columbia (BC). Methods: Therapeutics Initiative in BC has launched an audit and feedback intervention. Individual prescribing portraits were mailed to opioid prescribers, followed by academic detailing webinars. The webinars’ learning outcomes included defining the terms opioid naïve and opioid sparing, and educating attendees on the (lack of) evidence for opioid analgesics to treat non-cancer pain. The primary outcome was change in knowledge measured by four multiple-choice questions at the outset and conclusion of the webinar. Results: Two-hundred participants attended four webinars; 124 (62%) responded to the knowledge questions. Community-based primary care professionals (80/65%) from mostly urban settings (77/62%) self-identified as family physicians (46/37%), residents (22/18%), nurse practitioners (24/19%), and others (32/26%). Twelve participants (10%) recalled receiving the individualized portraits. While the correct identification of opioid naïve definitions increased by 23%, the correct identification of opioid sparing declined by 7%. Knowledge of the gaps in high-quality evidence supporting opioid analgesics and risk tools increased by 26% and 35%, respectively. Conclusion: The educational session outlined in this pilot yielded mixed results but appeared acceptable to learners and may need further refinement to become a feasible way to train professionals to help tackle the current toxic drugs crisis.
Analisi spaziale della distribuzione dei ritrovamenti ossei combusti delle UUSS 8 e 31 nel sito preistorico di Mondeval de Sora (BL – Italia)
Creators: name: Turrini, Maria Chiara
name: Rinaldi, Giulia
name: Fontana, Federica
name: Guerreschi, Antonio
name: Thun Hohenstein, Ursula
Publisher: name: Sezione di Museologia Scientifica e Naturalistica
Year: 2016

description: The site of Mondeval de Sora (BL, Italy) is located at an altitude of 2150 m in the Belluno Dolomites and it represents one of the most significant deposits for the study of the Mesolithic occupation of the south-eastern Alps. This site was excavated between 1986 and 2000, with a change over time in the size of the sub-grid adopted that has led to a lack of homogeneity in the data structure. For this paper SU 31 and SU 8 have been considered. The latter was excavated by sub-squares with sides of 10 cm, 20 cm and 33 cm. Furthermore, where the thickness of the SU was greater, sediments were removed by two or three artificial “cuts”, with different size of sub-squares too. Using a commercial GIS software, the number of bone findings was first recalculated for sub-squares of side length 33cm; then a number of distribution maps of remains was plotted, taking in account their different degree of combustion, in order to highlight possible distribution patterns and relationship to the hearth identified in the Sauveterrian sequence of the site.
description: Sezione di Museologia Scientifica e Naturalistica, Vol 11, N° 2 (2015)
Investigation on Antioxidant Activity, Phytochemicals, and Cytotoxicity of the Peel from Aloe Barbadensis Cultivated in Vietnam
Creators: name: Thanh Nguyen-Kim Le
Publisher: name: Zenodo
Year: 2025

description: Abstract:This study investigated the phytochemical composition, antioxidant potential, and cytotoxicity of a 70% methanol extract derived from Aloe barbadensis peel. Phytochemical analysis revealed a significant presence of phenolic compounds (43.12 ± 0.19 mg GAE/g) and flavonoids (4.79 ± 0.21 mg QE/g). Antioxidant activity was assessed using DPPH and ABTS radical scavenging assays, yielding IC50 values of 153.02 ± 2.11 µg/mL and 102.00 ± 4.18 µg/mL, respectively, indicating competitive antioxidant potential compared to other Aloe barbadensis sources, despite being lower than some previously reported values. Cytotoxicity was evaluated on LO2 (normal human hepatic) and HaCaT (immortalized human keratinocyte) cell lines at a concentration of 1 mg/mL, demonstrating no discernible cytotoxic effects. These findings suggest that Aloe barbadensis peel represents a promising source of bioactive compounds with potential applications in various fields.Keywords: Aloe barbadensis, antioxidant, cytotoxicity, peel, phytochemicals.
Using environmental simulations to test the release of hazardous substances from polymer-based products: Are Rrealism and pragmatism mutually exclusive objectives?
Creators: name: Bandow, Nicole
name: Aitken, Michael D.
name: Geburtig, Anja
Publisher: name: My University
Year: 2020
Subjects: Abbau
Auslaugung

description: The potential release of hazardous substances from polymer-based products is currently in the focus of environmental policy. Environmental simulations are applied to expose such products to selected aging conditions and to investigate release processes. Commonly applied aging exposure types such as solar and UV radiation in combination with water contact, corrosive gases, and soil contact as well as expected general effects on polymers and additional ingredients of polymer-based products are described. The release of substances is based on mass-transfer processes to the material surfaces. Experimental approaches to investigate transport processes that are caused by water contact are presented. For tailoring the tests, relevant aging exposure types and release quantification methods must be combined appropriately. Several studies on the release of hazardous substances such as metals, polyaromatic hydrocarbons, flame retardants, antioxidants, and carbon nanotubes from polymers are summarized exemplarily. Differences between natural and artificial exposure tests are discussed and demonstrated for the release of flame retardants from several polymers and for biocides from paints. Requirements and limitations to apply results from short-term artificial environmental exposure tests to predict long-term environmental behavior of polymers are presented. Source: https://www.mdpi.com
Supplementary document for Visually Guided Chick Ocular Length and Structural Thickness Variations Assessed by Swept-Source Optical Coherence Tomography - 5480023.pdf
Creators: name: YAN, FENG
name: WANG, CHEN
name: Wilson, Jayla
name: Connell, Michael
name: Ton, Sam
name: Davidson, Noah
name: Sibichan, Mourren
name: Chambers, Kari
name: Ahmed, Ahmed
name: Summers, Jody
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplemental Documents
The Effect of a Check In/Check Out Program on Disruptive Student Behavior
Creators: name: Feldman, Rebecca
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: subject: Education -- Research papers (Graduate)

description: The purpose of this study was to evaluate the impact of a Check in/Check out program on disruptive behavior in third grade students. Participating students were matched with a teacher and met with them briefly at the beginning and end of the school day. Student behavior was tracked using the existing behavior plan in the school. Behavior was tracked the week prior to the intervention as a pre-test and the week following the intervention as a post-test. The hypothesis that the Check in/Check out program would have no impact on disruptive behavior was rejected because there was a significant difference found between disruptive behavior before and after the intervention.
The Effects of Strength and Conditioning Programs on In-Game Performance of Male College Lacrosse Players
Creators: name: Field, Jeremy
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: subject: Education -- Research papers (Graduate)

description: The purpose of this study was to determine the impact on the performance of men’s lacrosse
players after participating in a rigorous fitness regimen. The measurement tools were a pre- and
post-test measuring mile times, dips, bench press and pull-ups, as well as pre- and post-surveys
with the coaching staff. This study involved use of a quasi-experimental design to measure the
change in fitness levels and observed performance. Improvements in fitness metrics showed
correlations with improved on-field performance. There is still room for research in this field,
especially involving control groups and more structured testing conditions.
The Importance of Character Education: a Study of Increased Structure and Focused Character Education in Morning Meetings
Creators: name: Frey, Lauren
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: subject: Education -- Research papers (Graduate)

description: The purpose of this study was to determine whether increasing the structure of morning meetings with a character education focus would reduce office referrals among students with behavior problems. This study used a retrospective pre-experimental design with a variant of a one-group pretest-posttest design. Subjects (n= 19) served as their own controls. Subjects were selected based on a “high” score on the dependent variable under the first condition in that they had two or more office referrals in the first semester of the school year and were considered frequent offenders. Dependent variable data was collected over the first semesters of the 2011-2012 and 2012-2013 school years in an elementary school. In 2011-2012 study morning meetings were unstructured but in 2012-2013 they were structured with a character education focus. There was no significant difference between the mean number of office referrals in the first semester of the school year among frequent offenders under nonstructured (Mean = 3.58, SD = 1.54) and structured (Mean= 2.37, SD = 2.31) morning meeting conditions [t(18) = 1.99, p > .05]. Implications are discussed including that more funding is needed to provide every classroom teacher with a research based character education program and materials and the need to conduct more rigorous research to assess the effectiveness of the intervention.
The Effect of Interventions on the Academic Achievement of African American Male Students
Creators: name: Jernigan, Jamel
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: subject: Education -- Research papers (Graduate)

description: The purpose of this study was to determine whether the Advancement Via Individual Determination African American Male Intervention Program (AVID AAMI) would increase cumulative GPA’s for African American male students. The study was causal comparative in design. Students participated in the AVID AAMI Intervention during at least one class period daily throughout grades 9 – 12, a total of 4 years. Data was then gathered based on the participants cumulative GPA after the first semester of grade 12 and on students’ grade 10 PSAT score. GPA and PSAT results reflected significant improvement. Therefore, the null hypothesis was rejected. Additional studies should be conducted to further analyze the long-term affect of AVID AAMI on academic achievement using measures such as university enrollment and rates for completion of higher education.
A Note on the Sticky Matroid Conjecture
Creators: name: Bonin, Joseph E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B35

description: A matroid is sticky if any two of its extensions by disjoint sets can be glued together along the common restriction (that is, they have an amalgam). The sticky matroid conjecture asserts that a matroid is sticky if and only if it is modular. Poljak and Turzik proved that no rank-3 matroid having two disjoint lines is sticky. We show that, for r at least 3, no rank-r matroid having two disjoint hyperplanes is sticky. These and earlier results show that the sticky matroid conjecture for finite matroids would follow from a positive resolution of the rank-4 case of a conjecture of Kantor.
description: 5 pages, 2 figures
Lattice path matroids: the excluded minors
Creators: name: Bonin, Joseph E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B35

description: A lattice path matroid is a transversal matroid for which some collection of incomparable intervals in some linear order on the ground set is a presentation. We characterize the minor-closed class of lattice path matroids by its excluded minors.
description: 13 pages, 2 figures
A construction of infinite sets of intertwines for pairs of matroids
Creators: name: Bonin, Joseph E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B35

description: An intertwine of a pair of matroids is a matroid such that it, but none of its proper minors, has minors that are isomorphic to each matroid in the pair. For pairs for which neither matroid can be obtained, up to isomorphism, from the other by taking free extensions, free coextensions, and minors, we construct a family of rank-k intertwines for each sufficiently large integer k. We also treat some properties of these intertwines.
description: 11 pages
Supplementary document for Visually Guided Chick Ocular Length and Structural Thickness Variations Assessed by Swept-Source Optical Coherence Tomography - 5480023.pdf
Creators: name: YAN, FENG
name: WANG, CHEN
name: Wilson, Jayla
name: Connell, Michael
name: Ton, Sam
name: Davidson, Noah
name: Sibichan, Mourren
name: Chambers, Kari
name: Ahmed, Ahmed
name: Summers, Jody
Publisher: name: Optica Publishing Group
Year: 2021
Subjects: Uncategorized

description: Supplemental Documents
Characterizations of transversal and fundamental transversal matroids
Creators: name: Bonin, Joseph E.
name: Kung, Joseph P. S.
name: de Mier, Anna
Publisher: name: arXiv
Year: 2010
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B35

description: A result of Mason, as refined by Ingleton, characterizes transversal matroids as the matroids that satisfy a set of inequalities that relate the ranks of intersections and unions of nonempty sets of cyclic flats. We prove counterparts, for fundamental transversal matroids, of this and other characterizations of transversal matroids. In particular, we show that fundamental transversal matroids are precisely the matroids that yield equality in Mason's inequalities and we deduce a characterization of fundamental transversal matroids due to Brylawski from this simpler characterization.
description: 12 pages, 1 figure
Semidirect sums of matroids
Creators: name: Bonin, Joseph E.
name: Kung, Joseph P. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B35, 05B20, 05C35, 05D99, 06C10, 51M04

description: For matroids M and N on disjoint sets S and T, a semidirect sum of M and N is a matroid K on the union of S and T that, like the direct sum and the free product, has the restriction of K to S equal to M and the contraction of K to T equal to N. We abstract a matrix construction to get a general matroid construction: the matroid union of any rank-preserving extension of M on the union of S and T with the direct sum of N and the rank-0 matroid on S is a semidirect sum of M and N. We study principal sums in depth; these are such matroid unions where the extension of M has each element of T added either as a loop or freely on a fixed flat of M. A second construction of semidirect sums, defined by a Higgs lift, also specializes to principal sums. We also explore what can be deduced if M and N, or certain of their semidirect sums, are transversal or fundamental transversal matroids.
description: 18 pages, 2 figures
An infinite family of excluded minors for strong base-orderability
Creators: name: Bonin, Joseph E.
name: Savitsky, Thomas J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B35

description: We discuss a conjecture of Ingleton on excluded minors for base-orderability, and, extending a result he stated, we prove that infinitely many of the matroids that he identified are excluded minors for base-orderability, as well as for the class of gammoids. We prove that a paving matroid is base-orderable if and only if it has no minor that is isomorphic to the cycle matroid of the complete graph on four vertices. For each k that is at least 2, we define the property of k-base-orderability, which lies strictly between base-orderability and strong base-orderability, and we show that k-base-orderable matroids form what Ingleton called a complete class. By generalizing an example of Ingleton, we construct a set of matroids, each of which is an excluded minor for k-base-orderability, but is (k-1)-base-orderable; the union of these sets, over all k, is an infinite set of base-orderable excluded minors for strong base-orderability.
description: 28 pages, 6 figures
Lattices related to extensions of presentations of transversal matroids
Creators: name: Bonin, Joseph E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B35

description: For a presentation $\mathcal{A}$ of a transversal matroid $M$, we study the set $T_{\mathcal{A}}$ of single-element transversal extensions of $M$ that have presentations that extend $\mathcal{A}$; we order these extensions by the weak order. We show that $T_{\mathcal{A}}$ is a distributive lattice, and that each finite distributive lattice is isomorphic to $T_{\mathcal{A}}$ for some presentation $\mathcal{A}$ of some transversal matroid $M$. We show that $T_{\mathcal{A}}\cap T_{\mathcal{B}}$, for any two presentations $\mathcal{A}$ and $\mathcal{B}$ of $M$, is a sublattice of both $T_{\mathcal{A}}$ and $T_{\mathcal{B}}$. We prove sharp upper bounds on $|T_{\mathcal{A}}|$ for presentations $\mathcal{A}$ of rank less than $r(M)$ in the order on presentations; we also give a sharp upper bound on $|T_{\mathcal{A}}\cap T_{\mathcal{B}}|$. The main tool we introduce to study $T_{\mathcal{A}}$ is the lattice $L_{\mathcal{A}}$ of closed sets of a certain closure operator on the lattice of subsets of $\{1,2,\ldots,r(M)\}$.
description: 19 pages, 5 figures
Delta-matroids as subsystems of sequences of Higgs lifts
Creators: name: Bonin, Joseph E
name: Chun, Carolyn
name: Noble, Steven D
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: In her paper "Generalized matroids and supermodular colourings", Tardos studied special delta-matroids obtained from sequences of Higgs lifts; these are the full Higgs lift delta-matroids that we treat and around which all of our results revolve. We give an excluded-minor characterization of the class of full Higgs lift delta-matroids within the class of all delta-matroids, and we give similar characterizations of two other minor-closed classes of delta-matroids that we define using Higgs lifts. We introduce a minor-closed, dual-closed class of Higgs lift delta-matroids that arise from lattice paths. It follows from results of Bouchet that all delta-matroids can be obtained from full Higgs lift delta-matroids by removing certain feasible sets; to address which feasible sets can be removed, we give an excluded-minor characterization of delta-matroids within the more general structure of set systems. Many of these excluded minors occur again when we characterize the delta-matroids in which the collection of feasible sets is the union of the collections of bases of matroids of different ranks, and yet again when we require those matroids to have special properties, such as being paving.
description: 24 pages, 10 figures
Derivation and Numerical Solution to the Double Pendulum Trajectories
Creators: name: Ul Abideen, Zain
Publisher: name: Zenodo
Year: 2024

description: In this study, we first derived the governing equations for the trajectories of the masses in a double pendulum and then solved those differential equations in the Scilab language. Two separate Euler-Lagrange equations were solved symbolically as the degrees of freedom of our system are two. The two obtained differential equations had to be broken down into a total of 4 first order ones to be solved numerically in Scilab. Results were generated for different initial conditions, and were visualized in scatter plots and animations.
The excluded 3-minors for vf-safe delta-matroids
Creators: name: Bonin, Joseph E
name: Chun, Carolyn
name: Noble, Steven D
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Vf-safe delta-matroids have the desirable property of behaving well under certain duality operations. Several important classes of delta-matroids are known to be vf-safe, including the class of ribbon-graphic delta-matroids, which is related to the class of ribbon graphs or embedded graphs in the same way that graphic matroids correspond to graphs. In this paper, we characterize vf-safe delta-matroids and ribbon-graphic delta-matroids by finding the minimal obstructions, called excluded 3-minors, to membership in the class. We find the unique (up to twisted duality) excluded $3$-minor within the class of set systems for the class of vf-safe delta-matroids. In the literature, binary delta-matroids appear in many different guises, with appropriate notions of minor operations equivalent to that of $3$-minors, perhaps most notably as graphs with vertex minors. We give a direct explanation of this equivalence and show that some well-known results may be expressed in terms of $3$-minors.
description: 15 pages, 1 figure
A distance-based, randomized controlled trial for reducing sedentary behavior among prostate cancer survivors: a study protocol
Creators: name: Trinh, Linda
name: Sabiston, Catherine M.
name: Alibhai, Shabbir M. H.
name: Jones, Jennifer M.
name: Arbour-Nicitopoulos, Kelly P.
name: Mina, Daniel S.
name: Campbell, Kristin
name: Faulkner, Guy E. J., 1970-
Publisher: name: BioMed Central
Year: 2022

description: Background Prostate cancer survivors (PCS) experience long-term side effects beyond treatment such as fatigue, depression and anxiety. Quality and engaging supportive care programs are needed to reduce these chronic and debilitating effects. Independent of physical activity (PA), high volumes of sedentary behavior (SB) are associated with chronic disease-related risk factors and poorer cancer-specific quality of life (QoL). Simultaneously increasing PA and decreasing SB may be an effective health promotion strategy. Given that PCS may face several barriers to engaging in supervised programs, there is a need to develop and assess the efficacy of interventions that employ distance-based approaches for behavior change. The primary aim of this study is to determine the effects of a 12-week intervention (Fitbit + behavioral counselling) vs. Fitbit-only control group in reducing SB among PCS. Secondary outcomes include light-intensity PA, QoL, motivational outcomes, and patient satisfaction. Methods This two-armed, randomized controlled trial will recruit inactive PCS (stage I-IV) across Canada who self-report engaging in >8 hours/day of SB. Participants will be randomized to the intervention (n=60; Fitbit and behavioral support) or active control group (n=60; Fitbit-only). The intervention consists of the use of a Fitbit and a series of six behavioral support sessions (two group, four individual) to aid PCS in gradually replacing SB with light-intensity PA by increasing their daily step counts to 3,000 steps above their baseline values. The Fitbit-only control condition will receive a Fitbit and public health PA resources. The primary outcome is change in SB measured objectively using activPAL inclinometers. All secondary outcomes will be measured via self-report, except for PA which will be measuring using Fitbits. Data will be collected at baseline, post-intervention, and at 6-month post-intervention. Discussion Reducing SB and increasing light-intensity PA plays an important, yet often undervalued role in the health and well-being of PCS. This study will create a unique distance-based platform that can be used by clinical and community-based organizations as a low-cost, supportive care tool to improve health outcomes for PCS. Trial Registration ClinicalTrials.gov Identifier NCT05214937 . Registered January 28, 2022 Protocol version: v.1
title: Optical and High Electric Field Effects in Bulk Gallium Arsenide Switches
Creators: name: Roush, Randy
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 1990

description: During the past few years, bulk, photoconductive switching has become recognized as a viable topic for future research on moderate and high power switches. The two-pulse, or BOSS, concept relies on an excitation laser pulse, and a separate de-excitation pulse in conjunction with silicon doped, copper compensated, GaAs to create a variable temporal electrical pulse width. The research contained in this document provides information concerning the feasibility of the BOSS concept, as the switch is scaled to larger sizes, and higher voltage and current. The major concern will be the high voltage and current effects. The absorption length for 1064 nm laser light in GaAs has been determined in order to design contacts that allows for maximum voltage hold-off. At higher voltages, an effect known as lock-on has been observed and is extensively studied here. Specifically, the temporal development of the dark lock-on current, and infrared quenching of lock-on currents will be addressed. Results of experimental and theoretical studies on thermal effects and steady-state dark current-voltage curves are presented. Experiments demonstrating infrared quenching of lock-on currents have been conducted.
Improving Robustness of Deep Learning Based Knee MRI Segmentation: Mixup and Adversarial Domain Adaptation
Creators: name: Panfilov, Egor
name: Tiulpin, Aleksei
name: Klein, Stefan
name: Nieminen, Miika T.
name: Saarakkala, Simo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Degeneration of articular cartilage (AC) is actively studied in knee osteoarthritis (OA) research via magnetic resonance imaging (MRI). Segmentation of AC tissues from MRI data is an essential step in quantification of their damage. Deep learning (DL) based methods have shown potential in this realm and are the current state-of-the-art, however, their robustness to heterogeneity of MRI acquisition settings remains an open problem. In this study, we investigated two modern regularization techniques -- mixup and adversarial unsupervised domain adaptation (UDA) -- to improve the robustness of DL-based knee cartilage segmentation to new MRI acquisition settings. Our validation setup included two datasets produced by different MRI scanners and using distinct data acquisition protocols. We assessed the robustness of automatic segmentation by comparing mixup and UDA approaches to a strong baseline method at different OA severity stages and, additionally, in relation to anatomical locations. Our results showed that for moderate changes in knee MRI data acquisition settings both approaches may provide notable improvements in the robustness, which are consistent for all stages of the disease and affect the clinically important areas of the knee joint. However, mixup may be considered as a recommended approach, since it is more computationally efficient and does not require additional data from the target acquisition setup.
Decomposable polymatroids and connections with graph coloring
Creators: name: Bonin, Joseph E.
name: Chun, Carolyn
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We introduce ideas that complement the many known connections between polymatroids and graph coloring. Given a hypergraph that satisfies certain conditions, we construct polymatroids, given as rank functions, that can be written as sums of rank functions of matroids, and for which the minimum number of matroids required in such sums is the chromatic number of the line graph of the hypergraph. This result motivates introducing chromatic numbers and chromatic polynomials for polymatroids. We show that the chromatic polynomial of any 2-polymatroid is a rational multiple of the chromatic polynomial of some graph. We also find the excluded minors for the minor-closed class of polymatroids that can be written as sums of rank functions of matroids that form a chain of quotients.
description: 21 pages
Phase transitions and composite order in $\mathrm{U}(1)^N$ lattice London models
Creators: name: Weston, Daniel
name: Sellin, Karl
name: Babaev, Egor
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The phase diagrams and the nature of the phase transitions in multicomponent gauge theories with an Abelian gauge field are important topics with various physical applications. While an early renormalization-group-based study indicated that the direct transition from a fully ordered to a fully disordered state is continuous for $N = 1$ and $N > 183$, recently it was demonstrated that the transition is discontinuous for $N = 2$. We quantitatively study the dependence on $N$ of the degree of discontinuity of this transition. Our results suggest that the transition is discontinuous at least up to $N = 7$. Furthermore, we demonstrate that, at increased coupling strength, the phase transitions of the neutral and charged sectors of the model split, which for $N > 2$ yields a new phase with composite order. The transition from the composite-order phase to the fully disordered phase is then also discontinuous, at least for $N = 3$ and $N = 4$. Via a duality argument, this indicates that van der Waals-type interaction between directed loops may be responsible for the discontinuous phase transitions in these models.
description: Published version. Additional data regarding the degree of discontinuity. Caveats added
A direct interferometric test of the nonlinear phase shift gate
Creators: name: Kaulfuss, Peter L.
name: Alsing, Paul M.
name: Hach, Edwin E.
name: III.
name: Smith, A. Matthew
name: Fanto, Michael L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a direct interferometric test of the Non-Linear Phase Shift Gate (NLPSG), an essential piece of a Knill Laflamme Milburn Contolled-NOT (KLM CNOT) gate. We develop our analysis for the both the case of the original, bulk optical KLM NLPSG and for the scalable integrated nano-photonic NLPSG based on Micro-Ring Resonators (MRRs) that we have proposed very recently. Specifically, we consider the interference between the target photon mode of the NLPSG along one arm of a Mach Zehnder Interferometer (MZI) and a mode subject to an adjustable linear phase along the other arm. Analysis of triple-photon coincidences between the two modes at the output of the MZI and the success ancillary mode of the NLPSG provides a signature of the operation of the NLPSG. We examine the triple coincidence results for experimentally realistic cases of click/no-click detection with sub-unity detection efficiencies. Further we compare the case for which the MZI input modes are seeded with weak Coherent States (w-CS) and to that for which the input states are those resulting from colinear Spontaneous Parametric Down Conversion (cl-SPDC). In particular, we show that, though more difficult to prepare, cl-SPDC states offer clear advantages for performing the test, especially in the case of relatively low photon detector efficiency.
description: 33 pages, 6 figures
THE POTENTIAL AND CHALLENGES OF BUSKER SYSTEM IN PUBLIC SPACE-Comparing the Tokyo Metropolitan Government's "Heaven Artist Project, " Kashiwa City's" Street Musician Registration System," and City of Melbourne's "Busking Permits"-
Creators: name: IZUMIYAMA, Rui
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 330411
subject: Urban design
classificationCode: 440714
subject: Urban policy
classificationCode: 330413
subject: Urban planning and health
classificationCode: 380118
subject: Urban and regional economics
classificationCode: 440408
subject: Urban community development

description: This study aimed to compare busker systems in Japan and Melbourne to identify the possibilities and challenges of introducing busker systems in Japanese public spaces.Chapter 2 organized the Tokyo Metropolitan Government’s “Haven Artist Project” and Kashiwa City’s "Street Musician Registration System" operation. Chapter 3 organized the operation of Melbourne’s “Busking Permits”. Chapter 4 compares and discusses the busker system in the three cases, and Chapter 5 examines the possibilities and challenges of the busker system in public spaces in Japan.
title: Material de Mediação Pedagógica - Cartilha: Pedagogias Decoloniais
title: Pedagogia Decolonial
titleType: AlternativeTitle
Creators: name: Julião, Laurinda Sousa
Publisher: name: Zenodo
Year: 2024

description: O Material de Mediação Pedagógica - Cartilha: Pedagogias Decoloniais é destinado a educadores(as) da Educação Básica. 

Contém informações básicas para a compreensão do Pensamentos Afrodiaspórico Decolonial e as Pedagogias Decolonias, especialmente no contexto brasileiro, com destaque para as Pedagogias Decoloniais Afrodiaspóricas e as Pedagogias Decoloniais Indígenas. 

Contempla quadro indicativo de leituras complementares e referências para aprofundamento sobre o tema.
Measurement of the energy asymmetry in $$t{\bar{t}}j$$ t t ¯ j production at $$13\,$$ 13 TeV with the ATLAS experiment and interpretation in the SMEFT framework
Creators: name: ATLAS Collaboration
Publisher: name: Springer Berlin Heidelberg
Year: 2022

description: A measurement of the energy asymmetry in jet-associated top-quark pair production is presented using $$139\,{\mathrm {fb}}^{-1}$$ 139 fb - 1 of data collected by the ATLAS detector at the Large Hadron Collider during pp collisions at $$\sqrt{s}=13\,\text {TeV}$$ s = 13 TeV . The observable measures the different probability of top and antitop quarks to have the higher energy as a function of the jet scattering angle with respect to the beam axis. The energy asymmetry is measured in the semileptonic $$t{\bar{t}}$$ t t ¯ decay channel, and the hadronically decaying top quark must have transverse momentum above $$350\,\text {GeV}$$ 350 GeV . The results are corrected for detector effects to particle level in three bins of the scattering angle of the associated jet. The measurement agrees with the SM prediction at next-to-leading-order accuracy in quantum chromodynamics in all three bins. In the bin with the largest expected asymmetry, where the jet is emitted perpendicular to the beam, the energy asymmetry is measured to be $$-0.043\pm 0.020$$ - 0.043 ± 0.020 , in agreement with the SM prediction of $$-0.037\pm 0.003$$ - 0.037 ± 0.003 . Interpreting this result in the framework of the Standard Model effective field theory (SMEFT), it is shown that the energy asymmetry is sensitive to the top-quark chirality in four-quark operators and is therefore a valuable new observable in global SMEFT fits.
Generating 3D structures from a 2D slice with GAN-based dimensionality expansion
Creators: name: Kench, Steve
name: Cooper, Samuel J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Generative adversarial networks (GANs) can be trained to generate 3D image data, which is useful for design optimisation. However, this conventionally requires 3D training data, which is challenging to obtain. 2D imaging techniques tend to be faster, higher resolution, better at phase identification and more widely available. Here, we introduce a generative adversarial network architecture, SliceGAN, which is able to synthesise high fidelity 3D datasets using a single representative 2D image. This is especially relevant for the task of material microstructure generation, as a cross-sectional micrograph can contain sufficient information to statistically reconstruct 3D samples. Our architecture implements the concept of uniform information density, which both ensures that generated volumes are equally high quality at all points in space, and that arbitrarily large volumes can be generated. SliceGAN has been successfully trained on a diverse set of materials, demonstrating the widespread applicability of this tool. The quality of generated micrographs is shown through a statistical comparison of synthetic and real datasets of a battery electrode in terms of key microstructural metrics. Finally, we find that the generation time for a $10^8$ voxel volume is on the order of a few seconds, yielding a path for future studies into high-throughput microstructural optimisation.
Are plastics within the air we breathe a threat to human health?
Creators: name: Alves, Daniel
Publisher: name: Anglia Ruskin Research Online (ARRO)
Year: 2025

description: Microplastics are ubiquitous within the air we breathe. Evidence from epidemiological studies suggest a threat to human health, confirmed by in vivo and in vitro studies. However, little information is known about the pulmonary deposition and ultimate fate within the respiratory tract. Additionally, water-soluble polymers (WSPs) were recently identified as an underrepresented form of plastic pollution. Again, limited information regarding pulmonary deposition or pulmonary toxicity is reported. This thesis aims to investigate whether these plastic pollutants could threaten human health.Microplastics representative of airborne microplastics were produced whilst WSPs commonly found within household items were purchased. The inhalation of each plastic was assessed using in vitro aerosol particle size distribution tests as described within British and US pharmacopeia’s. For WSPs physiochemical properties relating to inhalation were assessed to investigate their influence. Effects of these particles on human health was determined via MTT assay on two cell lines, A549 lung epithelium and THP-1 macrophages.Inhalation experiments of microplastic showed greatest deposition within upper respiratory tract and conducting airways, suggesting greater exposure in Gastrointestinal tissue (GIT) than lungs. No microplastic induced significant cytotoxicity in THP-1 macrophages, however, cytotoxicity was noted in epithelial cells particularly in fibrous particles. Aerosolization of WSPs varied greatly by polymer with polyacylic acid (PAA) and polyethylene glycol (PEG) showing greatest aerosol production. Most WSPs showed good deposition within respiratory lung regions and good exposure risk. Surface tension and viscosity was shown to have only minimal effects on predicting aerosolization and pulmonary deposition. Some WSPs were found to be highly cytotoxic in both A549 and THP-1 cells, whilst others showed only mild or no cytotoxicity.The main conclusions from this study is that insoluble microplastics represent a low threat to human pulmonary health, however due to high deposition within the upper respiratory system they could accumulate in the GIT and pose a threat there. Secondly the threat on human health posed by WSPs varies greatly dependant on the polymer, with some polymers such as PAA being high risk to human health, whilst polyvinyl alcohol (PVOH) and polyvinylpyrrolidone (PVP) are a low/medium threat.