cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Locally homogeneous pp-waves
Creators: name: Globke, Wolfgang
name: Leistner, Thomas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C50, 53C30, 83C20

description: We show that every n-dimensional locally homogeneous pp-wave is a plane wave, provided it is indecomposable and its curvature operator, when acting on $2$-forms, has rank greater than one. As a consequence we obtain that indecomposable, Ricci-flat locally homogeneous pp-waves are plane waves. This generalises a classical result by Jordan, Ehlers and Kundt in dimension 4. Several examples show that our assumptions on indecomposability and the rank of the curvature are essential.
description: In v2 Example 4.3 is added which shows that in the main theorems the assumption on the rank of the curvature is essential
Approach to universal self-similar attractor for the levelling of thin liquid films
Creators: name: Benzaquen, Michael
name: Fowler, Paul
name: Jubin, Laetitia
name: Salez, Thomas
name: Dalnoki-Veress, Kari
name: Raphaël, Elie
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We compare the capillary levelling of a random surface perturbation on a thin polystyrene film with a theoretical study on the two-dimensional capillary-driven thin film equation. Using atomic force microscopy, we follow the time evolution of samples prepared with different initial perturbations of the free surface. In particular, we show that the surface profiles present long term self-similarity, and furthermore, that they converge to a universal self-similar attractor that only depends on the volume of the perturbation, consistent with the theory. Finally, we look at the convergence time for the different samples and find very good agreement with the analytical predictions.
description: 7 pages, 5 figures
Superradiance and collective gain in multimode optomechanics
Creators: name: Kipf, T.
name: Agarwal, G. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a description of a strongly driven multimode optomechanical system that shows the emergence of cooperative effects usually known from systems of atom-light interaction. Our calculations show that under application of a coherent pump field the system's response can be switched from a superradiant regime to a collective gain regime by varying the frequency detuning of the pump. In the superradiant regime, enhanced optical cooling of a single vibrational mode is possible, whereas the collective gain regime would potentially enable one to achieve almost thresholdless phonon laser action. The threshold pumping power scales as 1/N.
description: 6 pages, 5 figures, to appear in Physical Review A
title: Digital breast tomosynthesis: state of the art imaging - pictorial review
Creators: name: Rajadurai, Suraindra
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: Breast
subject: Mammography
subject: Digital radiography
subject: Screening
subject: Cancer

description: Learning objectives Background Imaging findings OR Procedure details Conclusion Personal information References
description: Learning objectives: Briefly review the method of acquisition of digital breast tomosynthesis images, practical issues around implementation and radiation dose. Review the current implementation and indications for digital breast tomosynthesis. Appreciate the benefits...
title: MRI findings of Central Nervous System lymphoid vessels: a review of the radiological and scientific literature and discussion of neuroimmunological implications
Creators: name: Crilly, Shane
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: CNS
subject: MR
subject: Experimental investigations
subject: Inflammation

description: Purpose Methods and materials Results Conclusion Personal information References
description: Purpose: The discovery of brain lymphoid vessels in 2015 was named “Science Breakthrough of the Year”. It is a significant discovery for neuroscientists, neurologists and neuroradiologists in terms of elucidating the mechanisms of neuroimmunological...
title: Brief von Geoffrey M. Hodgson an Kurt Rothschild
Creators: name: Hodgson, Geoffrey Martin
name: The Swedish Collegium For Advanced Study In The Social Sciences
Year: 2017

description: Rundschreiben mit handschriftlicher Anrede. - Unterschriften in kopierter handschriftlicher Fassung.
description: Typoskript, 1 Blatt
The Blue Crab: A Survey with Application to San Antonio Bay
Creators: name: Ward, George H.
Publisher: name: Center for Water and the Environment, University of Texas at Austin
Year: 2012
Subjects: blue crab
Callinectes sapidus Rathbun
San Antonio Bay
Texas

description: The purpose of this report is to summarize the ecological attributes of the blue crab as manifested on, or relevant to the Texas coast, and specifically to San Antonio Bay. A literature survey of the biology and life stages of the blue crab is presented, with particular emphasis upon the Texas environment. Catch data from the Texas Parks and Wildlife Coastal Fisheries monitoring program is analyzed for San Antonio Bay.
How Well Can We Really Determine the Scale of Inflation?
Creators: name: Özsoy, Ogan
name: Sinha, Kuver
name: Watson, Scott
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A detection of primordial B-modes has been heralded not only as a smoking gun for the existence of inflation, but also as a way to establish the scale at which inflation took place. In this paper we critically reinvestigate the connection between a detection of primordial gravity waves and the scale of inflation. We consider whether the presence of additional fields and non-adiabaticity during inflation may have provided an additional source of primordial B-modes competitive with those of the quasi-de Sitter vacuum. In particular, we examine whether the additional sources could provide the dominant signal, which could lead to a misinterpretation of the scale of inflation. In light of constraints on the level of non-Gaussianity coming from Planck we find that only hidden sectors with strictly gravitationally strength couplings provide a feasible mechanism. The required model building is somewhat elaborate, and so we discuss possible UV completions in the context of Type IIB orientifold compactifications with RR axions. We find that an embedding is possible and that dangerous sinusoidal corrections can be suppressed through the compactification geometry. Our main result is that even when additional sources of primordial gravity waves are competitive with the inflaton, a positive B-mode detection would still be a relatively good indicator of the scale of inflation. This conclusion will be strengthened by future constraints on both non-Gaussianity and CMB polarization.
description: 35 Pages, 3 figures, references added
Non‐Destructive Low‐Temperature Contacts to MoS2 Nanoribbon and Nanotube Quantum Dots
Creators: name: Schock, Robin T. K.
name: Neuwald, Jonathan
name: Möckel, Wolfgang
name: Kronseder, Matthias
name: Pirker, Luka
name: Remškar, Maja
name: Hüttel, Andreas K.
Publisher: name: Universität Regensburg
Year: 2023
Subjects: subject: bismuth, nanotubes, molybdenum disulfide, quantum confinement, quantum dots
subject: 530 Physik

description: Molybdenum disulfide nanoribbons and nanotubes are quasi-one dimensional semiconductors with strong spin-orbit interaction, a nanomaterial highly promising for quantum electronic applications. Here, we demonstrate that a bismuth semimetal layer between the contact metal and this nanomaterial strongly improves the properties of the contacts. Two-point resistances on the order of 100kΩ are observed at room temperature. At cryogenic temperature, Coulomb blockade is visible. The resulting stability diagrams indicate a marked absence of trap states at the contacts and the corresponding disorder, compared to previous devices which use low-work function metals as contacts. Single level quantum transport is observed at temperatures below 100 mK.
Coulomb solutions from improper pseudo-unitary free gauge field operator translations
Creators: name: Aste, Andreas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Fundamental problems of quantum field theory related to the representation problem of canonical commutation relations are discussed within a gauge field version of a van Hove-type model. The Coulomb field generated by a static charge distribution is described as a formal superposition of time-like pseudo-photons in Fock space with a Krein structure. In this context, a generalization of operator gauge transformations is introduced to generate coherent states of abelian gauge fields interacting with a charged background.
description: 19 pages, two sections extended
title: Do breast density and lesion characteristics impact on radiologist’s first impression of a mammogram?
Creators: name: Gandomkar, Ziba
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: Breast
subject: Mammography
subject: Decision analysis
subject: Cancer

description: Purpose Methods and materials Results Conclusion Personal information References
description: Purpose: In radiology, the ‘ gist ’ refers to an initial radiological impression of an image obtained from a half-second image glimpse. Two hypotheses have been proposed to explain it: The gist signal constrains subsequent fixations and has a localized...
Is the Blazhko effect the beating of a near-resonant double-mode pulsation?
Creators: name: Bryant, Paul H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this paper it is shown that the Blazhko effect may result from a near-resonant type of multi-mode pulsation, where two (or sometimes more) periodic oscillations with slightly different frequencies gradually slip in phase, producing a beat frequency type of modulation. Typically one of these oscillations is strongly non-sinusoidal. Two oscillations are sufficient for the standard Blazhko effect; additional oscillations are needed to explain multi-frequency modulation. Previous work on this hypothesis by Arthur N. Cox and others is extended in this paper by developing a simple (non-hydro) model that can accurately reproduce several important features found in Kepler data for RR Lyr, including the pulsation waveform, the upper and lower Blazhko envelope functions and the motion, disappearance and reappearance of the bump feature. The non-sinusoidal oscillation is probably generated by the fundamental mode and the other oscillations are probably generated by nonradial modes. This model provides an explanation for the strong asymmetry observed in the side peak spectra of most RR Lyrae stars. The motion and disappearance of the bump feature are shown to be an illusion, just an artifact of combining the oscillations. V445 Lyr is presented as an example with dual modulation. The mysterious double-maxima waveform observed for this star is explained, providing additional strong evidence that this beating-modes hypothesis is correct. Problems with other recent explanations of the Blazhko effect are discussed in some detail.
description: ACCEPTED for Publication in ApJ. Important changes since first version: Emphasizes the double-maxima waveform of V445 Lyr as strong evidence for the paper's hypothesis; Discussion of Blazhko models now includes the ninth overtone model, the shock model and the Stothers model; Discusses rotational splitting model of Nowakowski & Dziembowski as a variant of current model
Supplementary document for Portable Low-Coherence Digital Holographic Microscope - 7404970.pdf
Creators: name: Leon-Rodriguez, Miguel
name: Rayas, Juan
name: Martinez-Garcia, Amalia
name: Gonzalez, Adrian Martínez
name: Miguel-Andrés, Israel
name: Téllez-Quiñones, Alejandro
name: Santoyo, Fernando Mendoza
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplementary document
title: Soft tissue myeloid sarcoma masquerading as a haematoma with unusual sonographic appearance
Creators: name: Shin, Bronwyn
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: Oncology
subject: Soft tissues / Skin
subject: CT
subject: Ultrasound
subject: Biopsy
subject: Leukaemia
subject: Haematologic diseases

description: Learning objectives Background Imaging findings OR Procedure details Conclusion Personal information References
description: Learning objectives: Myeloid sarcoma is a rare diagnosis which is uncommonly encountered by radiologists. This rare case aims to familiarise radiologists with myeloid sarcoma of its imaging characteristics and potential...
Generalized conditional entropy optimization for qudit-qubit states
Creators: name: Gigena, N.
name: Rossignoli, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive a general approximate solution to the problem of minimizing the conditional entropy of a qudit-qubit system resulting from a local projective measurement on the qubit, which is valid for general entropic forms and becomes exact in the limit of weak correlations. This entropy measures the average conditional mixedness of the post-measurement state of the qudit, and its minimum among all local measurements represents a generalized entanglement of formation. In the case of the von Neumann entropy, it is directly related to the quantum discord. It is shown that at the lowest non-trivial order, the problem reduces to the minimization of a quadratic form determined by the correlation tensor of the system, the Bloch vector of the qubit and the local concavity of the entropy, requiring just the diagonalization of a $3\times 3$ matrix. A simple geometrical picture in terms of an associated correlation ellipsoid is also derived, which illustrates the link between entropy optimization and correlation access and which is exact for a quadratic entropy. The approach enables a simple estimation of the quantum discord. Illustrative results for two-qubit states are discussed.
description: 11 pages, 6 figures. Final published version
VIOLENCE-INDUCED INTERNALLY DISPLACED PERSONS: THEIR RIGHTS AND THE CORRESPONDING DUTIES OF THE STATE
Creators: name: Meghali Das
name: Sadhna Gupta
Publisher: name: Zenodo
Year: 2023

description: The problem of internal displacement of people due to instances of violence, is a major issue that is spread across the nation. Communities which have been so displaced forcefully live in dire conditions with no or inadequate access to their basic rights. The absence of any legislation or policy that specifically protects such communities only adds to their vulnerability. However, being bona fide citizens of India, persons of such communities hold the same fundamental legal rights as any other Indian citizen and the State is duty-bound to ensure their protection as well as welfare.
Giving a very brief introduction into the jural relation between rights and duties as explained by Hohfeld, this paper will introduce the concept of internal displacement and how the law regarding forceful internal displacement evolved in the international sphere. The paper would lay down the rights available to IDP communities, with special reference to IDPs displaced due to violence, under various international laws and conventions. Similarities in the Indian Constitution with the international law, the Fundamental Rights available to such communities along with the additional duty of the State towards these communities on the basis of the Directive Principles will also be discussed. It will further suggest ways forward for giving the IDP communities of the State the rights they deserve.
title: 3D PRINTING: Hope or Hype
Creators: name: Varma, Aditya
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: Computer applications
subject: Anatomy
subject: CT
subject: Image manipulation / Reconstruction
subject: Computer Applications-3D
subject: Computer Applications-Detection, diagnosis
subject: Prostheses
subject: Dysplasias
subject: Education and training

description: Learning objectives Background Imaging findings OR Procedure details Conclusion Personal information References
description: Learning objectives: Simply put, 3D Printing is a manufacturing process that creates a physical object from a digital design. Technically nearly every manufacturing process in the the world utilizes this technology in some way or the other. It is now becoming an...
Rapidly rotating black holes in dynamical Chern-Simons gravity: Decoupling limit solutions and breakdown
Creators: name: Stein, Leo C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Rapidly rotating black holes are a prime arena for understanding corrections to Einstein's theory of general relativity (GR). We construct solutions for rapidly rotating black holes in dynamical Chern-Simons (dCS) gravity, a useful and motivated example of a post-GR correction. We treat dCS as an effective theory and thus work in the decoupling limit, where we apply a perturbation scheme using the Kerr metric as the background solution. Using the solutions to the scalar field and the trace of the metric perturbation, we determine the regime of validity of our perturbative approach. We find that the maximal spin limit may be divergent, and the decoupling limit is strongly restricted for rapid rotation. Rapidly-rotating stellar-mass BHs can potentially be used to place strong bounds on the coupling parameter $\ell$ of dCS. In order for the black hole observed in GRO J1655-40 to be within the decoupling limit we need $\ell \lesssim 22$ km, a value 7 orders of magnitude smaller than present Solar System bounds on dynamical Chern-Simons gravity.
description: 8 pages, 4 figures; matches version appearing in PRD
Understanding Communication Dynamics During Social Isolation – A Hermeneutical Study of Filipino Domestic Workers During COVID-19
Creators: name: Jance, Ma. Cristel G.
Publisher: name: Zenodo
Year: 2022
Subjects: Communication Dynamics, Social Isolation, COVID-19, Foreign Domestic Workers, Domestic Helpers, Multicultural Singapore, Pandemic Narratives

description: Purpose: Foreign domestic workers (FDWs) engage in intercultural and interpersonal interactions day in and day out, but the COVID-19 pandemic has impacted their communication dynamics as social isolation from the lockdown and restrictions created limitations on their communication channels and tendencies. This study aimed to examine and understand the “stay-at-home” experiences of FDWs with foreign employers, especially their challenges in communication, in the multicultural landscape of Singapore. Methods: Interviews were conducted with 5 Filipino FDWs with employers of varying ethnicities. Their narratives were recorded, analyzed, and interpreted through a qualitative approach, particularly using hermeneutical phenomenology. Findings: Three main themes emerged from the participants: (1) Silence as a Reluctant Yes, (2) Striving for Multicultural Coexistence, and (3) Interpersonal Communication During a Double Pandemic. These were further explained and expounded under seven sub-themes. Conclusion: From the constant and lengthy togetherness of the lockdown, shifts in communication dynamics were primarily involving power inequalities and differences in cultural perspectives inside the household. As these were emphasized, violation of worker rights, especially on the FDWs’ rest days became prevalent as they struggled with boundary negotiation. Reading body language and emotions served great importance in navigating through barriers of effective communication, achieving multicultural coexistence, and overcoming loneliness from social isolation.
title: The role of a rapid protocol abdominal MRI for patients with clinically suspected Appendicitis
Creators: name: Aggarwala, Shiv
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: Abdomen
subject: Management
subject: Emergency
subject: MR
subject: Surgery
subject: Acute
subject: Inflammation

description: Purpose Methods and materials Results Conclusion Personal information References
description: Purpose: The utilisation of magnetic resonance imaging (MRI) is rapidly evolving and MRI is increasingly being used for the evaluation of young patients with clinically suspected appendicitis. Current literature reports a positive predictive value of 92% and...
title: Magnetic resonance imaging features associated with acute Appendicitis
Creators: name: Aggarwala, Shiv
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: Abdomen
subject: MR
subject: Surgery
subject: Pathology

description: Learning objectives Background Imaging findings OR Procedure details Conclusion Personal information References
description: Learning objectives: Tounderstand the magnetic resonance imaging (MRI) features associated with a positive diagnosis of acute appendicitis and their likelihood of being present in a positive...
Large Extra Dimension effects through Light-by-Light Scattering at the CERN LHC
Creators: name: Sun, Hao
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Observing light-by-light scattering at the Large Hadron Collider (LHC) has received quite some attention and it is believed to be a clean and sensitive channel to possible new physics. In this paper, we study the diphoton production at the LHC via the process $\rm pp\rightarrow pγγp\rightarrow pγγp$ through graviton exchange in the Large Extra Dimension (LED) model. Typically, when we do the background analysis, we also study the Double Pomeron Exchange (DPE) of $γγ$ production. We compare its production in the quark-quark collision mode to the gluon-gluon collision mode and find that contributions from the gluon-gluon collision mode are comparable to the quark-quark one. Our result shows, for extra dimension $δ=4$, with an integrated luminosity $\rm {\cal L} = 200 fb^{-1}$ at the 14 TeV LHC, that diphoton production through graviton exchange can probe the LED effects up to the scale $\rm M_S=5.06 (4.51, 5.11) TeV$ for the forward detector acceptance $ξ_1 (ξ_2, ξ_3)$, respectively, where $0.0015
description: 25 pages. 7 figs. Change some grammatical errors
Propagation of acoustic edge waves in graphene under quantum Hall effect
Creators: name: Vikström, Anton
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider a graphene sheet with a zigzag edge subject to a perpendicular magnetic field and investigate the propagation of in-plane acoustic edge waves under the influence of magnetically induced electronic edge states. In particular is is shown that propagation is significantly blocked for certain frequencies defined by the resonant absorption due to electronic-acoustic interaction. We suggest that strong interaction between the acoustic and electronic edge states in graphene may generate significant non-linear effects leading to the existence of acoustic solitons in such systems.
description: 7 pages, 3 figures. v2: fixed two instances of missing units
title: A comparison between trans-abdominal pelvic ultrasound and magnetic resonance imaging in investigating young female patients presenting with acute undifferentiated lower abdominal pain
Creators: name: Aggarwala, Shiv
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: Abdomen
subject: Pelvis
subject: MR
subject: Surgery
subject: Acute
subject: Inflammation

description: Purpose Methods and materials Results Conclusion Personal information References
description: Purpose: Young females presenting with acute lower abdominal pain is a frequent occurrence in emergency departments and there is usually a variety of differential diagnosis. In the attempt to limit exposure to ionising radiation, computed tomography is most...
Investigation of the association of military employment and Parkinson’s disease with a validated Parkinson’s disease case-finding strategy
Creators: name: Power, Melinda C.
name: Parthasarathy, Varsha
name: Gianattasio, Kan Z.
name: Walker, Rod L.
name: Crane, Paul K.
name: Larson, Eric B.
name: Gibbons, Laura E.
name: Kumar, Raj G.
name: O’Connor, Kristen Dams
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Persons with military involvement may be more likely to have Parkinson’s disease (PD) risk factors. As PD is rare, case finding remains a challenge, contributing to our limited understanding of PD risk factors. Here, we explore the validity of case-finding strategies and whether military employment is associated with PD. We identified Adult Changes in Thought (ACT) study participants reporting military employment as their longest or second longest occupation. We used self-report and prescription fills to identify PD cases and validated this case-finding approach against medical record review. At enrollment, 6% of 5,125 eligible participants had military employment and 1.8% had prevalent PD; an additional 3.5% developed PD over follow-up (mean: 8.3 years). Sensitivity of our case-finding approach was higher for incident (80%) than prevalent cases (54%). Specificity was high (>97%) for both. Military employment was not associated with prevalent PD. Among nonsmokers, point estimates suggested an increased risk of incident PD with military employment, but the result was non-significant and based on a small number of cases. Self-report and prescription medications can accurately identify incident PD cases relative to the reference method of medical record review. We found no association between military employment and PD.
Hierarchical porous architecture design in battery electrodes for scalable high-energy battery systems
Creators: name: Zhang, Xiao (Ph. D. In Materials Science And Engineering)
name: 0000-0002-6596-9731
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Lithium-ion batteries
Porous architecture
Transport kinetics

description: With fast electrification of the modern society and increasing number of smart devices, portable energy storage solutions are in high demand. Among various energy storage systems (ESS), lithium-ion battery (LIB) has become one of the most popular EESs due to high energy, long lifetime and… Nevertheless, current LIB technology still needs higher energy density to provide reliable and flexible stationary energy storage as well as to power large electronics including electric vehicles (EVs). LIBs are multi-component systems consisting of active materials as energy storage sites and other inactive materials facilitating the energy conversion process. By increasing the electrode areal loading, higher active material ratio could lead to higher energy density on the cell level. However, due to the prolonged transport distance and tortuous diffusion pathways, thick electrodes oftentimes show deteriorated electrochemical performance. Several key steps are determining the overall energy storage kinetics, where ion transport plays an important role in thick electrodes. In this thesis, various approaches have been made to improve the ion transport, in order to restore the full potential of the active materials inside thick electrodes.
Non-Liouville groups with return probability exponent at most 1/2
Creators: name: Kotowski, Michał
name: Virág, Bálint
Publisher: name: arXiv
Year: 2014
Subjects: subject: Group Theory (math.GR)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We construct a finitely generated group $G$ without the Liouville property such that the return probability of a random walk satisfies $p_{2n}(e,e) \gtrsim e^{-n^{1/2 + o(1)}}$. Recent results suggest that $1/2$ is indeed the smallest possible return probability exponent for non-Liouville groups. Our construction is based on permutational wreath products over tree-like Schreier graphs and the analysis of large deviations of inverted orbits on such graphs.
description: 15 pages, 1 figure; v2: minor corrections
Quantum networks generation based on four-wave mixing
Creators: name: Cai, Yin
name: Feng, Jingliang
name: Wang, Hailong
name: Ferrini, Giulia
name: Xu, Xinye
name: Jing, Jietai
name: Treps, Nicolas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a scheme to realize versatile quantum networks by cascading several four-wave mixing (FWM) processes in warm rubidium vapors. FWM is an efficient $χ^{(3)}$ nonlinear process, already used as a resource for multimode quantum state generation and which has been proved to be a promising candidate for applications to quantum information processing. We analyze theoretically the multimode output of cascaded FWM systems, derive its independent squeezed modes and show how, with phase controlled homodyne detection and digital post-processing, they can be turned into a versatile source of continuous variable cluster states.
description: 7 pages, 6 figures, Quantum optics
title: Investigating Suspected Stroke with CT Angiography in the Emergency Department: Are we overdoing it? - Preliminary Audit
Creators: name: Teh, Sheng Rong
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: CT-Angiography
subject: Vascular
subject: Neuroradiology brain
subject: Emergency
subject: Audit and standards
subject: Outcomes
subject: Acute

description: Purpose Methods and materials Results Conclusion Personal information References
description: Purpose: Cranio-cervical CT angiography (CC-CTA) is the preferred test for guiding management of acute stroke, and risk stratification for recurrence in transient ischaemic attack (TIA). Approximately 50% of patients who present with minor stroke or TIA have...
Geodesic "curve"-of-sight formulae for the cosmic microwave background: a unified treatment of redshift, time delay, and lensing
Creators: name: Saito, Ryo
name: Naruko, Atsushi
name: Hiramatsu, Takashi
name: Sasaki, Misao
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we introduce a new approach to a treatment of the gravitational effects (redshift, time delay and lensing) on the observed cosmic microwave background (CMB) anisotropies based on the Boltzmann equation. From the Liouville's theorem in curved spacetime, the intensity of photons is conserved along a photon geodesic when non-gravitational scatterings are absent. Motivated by this fact, we derive a second-order line-of-sight formula by integrating the Boltzmann equation along a perturbed geodesic (curve) instead of a background geodesic (line). In this approach, the separation of the gravitational and intrinsic effects are manifest. This approach can be considered as a generalization of the remapping approach of CMB lensing, where all the gravitational effects can be treated on the same footing.
description: 40 pages, 3 figures; v2: published in JCAP, references added, typos corrected, a minor revision in sec. 4.1
CONTEXTUALIZATION OF GRADE 3 INSTRUCTIONAL MATERIALS: BASIS FOR A DESIGN OF BULACAN TAGALOG-BASED SCIENCE MATERIALS
Creators: name: Adriano, Ma. Nina I.
Publisher: name: Zenodo
Year: 2022
Subjects: mother-tongue, science instructional materials, 5Is model, contextualization

description: This qualitative research aims to develop a Grade 3 instructional material in science using Bulacan-Tagalog as the medium of instruction. To develop the material, the researcher proposed a framework that will serve as a guide in developing contextualized science instructional materials in the mother tongue. The researcher observed three science classes from three special science public schools in Baliwag and Bustos using the Classroom Observation Rubric (COR) by CREDE, 2011; interviewed the science teachers using a self-made Interview Protocol and conducted document analysis on the instructional materials used in the Grade3 science lessons using the Level of Contextualization Rubric by Heaslip’s (2013). Using the developed 5Is framework, the researcher was able to develop a Grade 3 contextualized science instructional material that is learner-centered and contextualized through the Iugnay, Isagawa, and Ilapat components of the model. It engages learners in collaborative activities with their classmates, both in online and face-to-face setup under Ibahagi, and provides an avenue for learners to use their learning in various context through Itawid. The study recommends to use the model in developing instructional materials in science or improve the already existing science materials using the 5Is model. It is further recommended that they extend this study in order to find out if the developed instructional material is effective in improving the level of contextualization in the teaching-learning process.
Didactic derivation of the special theory of relativity from the Klein-Gordon equation
Creators: name: Arodź, H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We present a didactic derivation of the special theory of relativity in which Lorentz transformations are `discovered' as symmetry transformations of the Klein-Gordon equation. The interpretation of Lorentz boosts as transformations to moving inertial reference frames is not assumed at the start, but it naturally appears at a later stage. The relative velocity $\textbf{v}$ of two inertial reference frames is defined in terms of the elements of the pertinent Lorentz matrix, and the bound $|\textbf{v}|
description: 16 pages, no figures; matches the published version
title: Defecating proctography: suggested technique and spectrum of findings
Creators: name: Lukies, Matthew
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: Gastrointestinal tract
subject: Pelvis
subject: Fluoroscopy
subject: Defecography
subject: Pelvic floor dysfunction

description: Learning objectives Background Imaging findings OR Procedure details Conclusion Personal information References
description: Learning objectives: The aim of this educational exhibit is to present a suggested technique for performing fluoroscopic defecating proctography and demonstrate the range of pathological findings commonly encountered to assist in performing and interpreting the...
Self-gravitating Interferometry and Intrinsic Decoherence
Creators: name: Gooding, Cisco
name: Unruh, William G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: To investigate the possibility that intrinsic gravitational decoherence can be theoretically demonstrated within canonical quantum gravity, we develop a model of a self-gravitating interferometer. We search for evidence in the resulting interference pattern that would indicate coherence is fundamentally limited due to general relativistic effects. To eliminate the occurence of gravitational waves, we work in spherical symmetry, and construct the "beam" of the interferometer out of WKB states for an infinitesimally thin shell of matter. For internal consistency, we encode information about the beam optics within the dynamics of the shell itself, by arranging an ideal fluid on the surface of the shell with an equation of state that enforces beam-splitting and reflections. We then determine sufficient conditions for (interferometric) coherence to be fully present even after general relativistic corrections are introduced, test whether or not they can be satisfied, and remark on the implications of the results.
description: 16 pages, 6 figures. v2: Minor revisions. Accepted for publication in Phys. Rev. D
The Biermann Catastrophe in Numerical MHD
Creators: name: Graziani, Carlo
name: Tzeferacos, Petros
name: Lee, Dongwook
name: Lamb, Donald Q.
name: Weide, Klaus
name: Fatenejad, Milad
name: Miller, Joshua
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The Biermann Battery effect is frequently invoked in cosmic magnetogenesis and studied in High-Energy Density laboratory physics experiments. Generation of magnetic fields by the Biermann effect due to mis-aligned density and temperature gradients in smooth flow behind shocks is well known. We show that a Biermann-effect magnetic field is also generated within shocks. Direct implementation of the Biermann effect in MHD codes does not capture this physical process, and worse, produces unphysical magnetic fields at shocks whose value does not converge with resolution. We show that this convergence breakdown is due to naive discretization, which fails to account for the fact that discretized irrotational vector fields have spurious solenoidal components that grow without bound near a discontinuity. We show that careful consideration of the kinetics of ion viscous shocks leads to a formulation of the Biermann effect that gives rise to a convergent algorithm. We note two novel physical effects: a resistive magnetic precursor in which Biermann-generated field in the shock "leaks" resistively upstream; and a thermal magnetic precursor, in which field is generated by the Biermann effect ahead of the shock front due to gradients created by the shock's electron thermal conduction precursor. Both effects appear to be potentially observable in experiments at laser facilities. We re-examine published studies of magnetogenesis in galaxy cluster formation, and conclude that the simulations in question had inadequate resolution to reliably estimate the field generation rate. Corrected estimates suggest primordial field values in the range $B\sim 10^{-22}$G --- $10^{-19}$G by $z=3$.
description: 22 pages. This version accepted by the Astrophysical Journal. Changes include a new section on magnetogenesis in galaxy cluster formation
The Co-Researchers journey in CoAct for Mental Health
Creators: name: Mateu, Assumpta
name: Figueras, Amanda
name: Bonhoure, Isabelle
name: Perelló, Josep
name: Harrison, Verity
Publisher: name: Zenodo
Year: 2023
Subjects: citizen science
citizen social science
mental health
co-researchers

description: This graphic document is a testimony of the Co-Researchers' contribution to CoAct for Mental Health over a long and still unfinished journey, from 2020 to 2022. Co-Researchers, people with mental health problems and their families, have been the main actors of this research, as in-the-field competent experts. The research involved launching a chatbot in Telegram where anyone can listen to their lived experiences and react to them. CoResearchers have been involved in the interpretation of the data collected and drew conclusions to make political recommendations and support specific demands. CoAct for Mental Health is part of CoAct (Co-designing Citizen Social Science for Collective Action), a project funded by the European Union's Horizon 2020 research and innovation programme under grant agreement No. 873048. CoAct understands Citizen Social Science as participatory research co-designed and directly driven by citizen groups sharing a social concern. We expect to upscale this project at a more global level and to replicate it to other social pressing issues. This storytelling document has been done based on the technique of graphic reporting and represent an innovative way to disseminate citizen science for health results. The graphic recording reports Co-Researchers lived stories collected with interview performed by the graphic artist Verity Harrison. In parallel, the general timeline of the project is represented, from the Open Call to recruit Co-Researchers to the final assembly where the final policy recommendations were presented. The posters' contents will be explained by two of the CoResearchers that participated to the project and one member of the academic team.
Mind the gap on Icecube: Cosmic neutrino spectrum and muon anomalous magnetic moment in the gauged L_μ - L_τ model
Creators: name: Araki, Takeshi
name: Kaneko, Fumihiro
name: Konishi, Yasufumi
name: Ota, Toshihiko
name: Sato, Joe
name: Shimomura, Takashi
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The energy spectrum of cosmic neutrinos, which was recently reported by the IceCube collaboration, shows a gap between 400 TeV and 1 PeV. An unknown neutrino interaction mediated by a field with a mass of the MeV scale is one of the possible solutions to this gap. We examine if the leptonic gauge interaction L_μ - L_τ can simultaneously explain the two phenomena in the lepton sector: the gap in the cosmic neutrino spectrum and the unsettled disagreement in muon anomalous magnetic moment. We illustrate that there remains the regions in the model parameter space, which account for both the problems. Our results also provide a hint for the distance to the source of the high-energy cosmic neutrinos.
description: 5 pages,7 figures: v2; references added, z dependence of cosmic neutrino energy included, conclusion unchanged
Финансово—экономический журнал,Выпуск 8 МКНТ 2023
Creators: name: ООО "Институт развития образования и консалтинга"
Publisher: name: ООО "Институт развития образования и консалтинга"
Year: 2023

description: Финансово—экономический журнал,Выпуск 8 МКНТ 2023
Orbital motions as gradiometers for post-Newtonian tidal effects
Creators: name: Iorio, Lorenzo
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The direct long-term changes occurring in the orbital dynamics of a local gravitationally bound binary system $S$ due to the post-Newtonian tidal acceleration caused by an external massive source are investigated. A class of systems made of a test particle $m$ rapidly orbiting with orbital frequency $n_{\rm b}$ an astronomical body of mass $M$ which, in turn, slowly revolves around a distant object of mass $M^{'}$ with orbital frequency $n_{\rm b}^{'}\ll n_{\rm b}$ is considered. The characteristic frequencies of the non-Keplerian orbital variations of $m$ and of $M$ itself are assumed to be negligible with respect to both $n_{\rm b}$ and $n_{\rm b}^{'}$. General expressions for the resulting Newtonian and post-Newtonian tidal orbital shifts of $m$ are obtained. The future missions BepiColombo and JUICE to Mercury and Ganymede, respectively, are considered in view of a possible detection. The largest effects, of the order of $\approx 0.1-0.5$ milliarcseconds per year (mas yr$^{-1}$), occur for the Ganymede orbiter of the JUICE mission. Although future improvements in spacecraft tracking and orbit determination might, perhaps, reach the required sensitivity, the systematic bias represented by the other known orbital perturbations of both Newtonian and post-Newtonian origin would be overwhelming. The realization of a dedicated artificial mini-planetary system to be carried onboard and Earth-orbiting spacecraft is considered as well. Post-Newtonian tidal precessions as large as $\approx 1-10^2$ mas yr$^{-1}$ could be obtained, but the quite larger Newtonian tidal effects would be a major source of systematic bias because of the present-day percent uncertainty in the product of the Earth's mass times the Newtonian gravitational parameter.
description: LaTex2e, 20 pages, no figures, 3 tables. Accepted for publication in Frontiers in Astronomy and Space Sciences - Cosmology
title: Paratesticular Paraganglioma: A Case Report and Overview of Imaging Modalities
Creators: name: Boles, Rachael
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: Cancer
subject: Molecular imaging
subject: PET
subject: MR
subject: CT
subject: Head and neck
subject: Nuclear medicine
subject: Genital / Reproductive system male

description: Learning objectives Background Imaging findings OR Procedure details Conclusion Personal information References
description: Learning objectives: Present a case of a paratesticular paraganglioma. Review the imaging modalities used in the diagnosis and staging of paragangliomas. Discuss imaging characteristics of different types of...
Morphic images of episturmian words having finite palindromic defect
Creators: name: Starosta, Štěpán
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 68R15

description: We study morphisms from certain classes and their action on episturmian words. The first class is $P_{ret}$. In general, a morphism of class $P_{ret}$ can map an infinite word having zero palindromic defect to a word having infinite palindromic defect. We show that the image of an episturmian word, which has zero palindromic defect, under a morphism of class $P_{ret}$ has always its palindromic defect finite. We also focus on letter-to-letter morphisms to binary alphabet: we show that images of ternary episturmian words under such morphisms have zero palindromic defect. These results contribute to the study of an unsolved question of characterization of morphisms that preserve finite (resp. zero) palindromic defect. They also enable us to construct new examples of binary $H$-rich and almost $H$-rich words, where $H = \{\rm{Id}, R, E, RE \}$ is the group generated by both involutory antimorphisms on a binary alphabet.
description: 18 pages
title: Audit of after-hours head CT scans at a Tertiary Hospital - Clinical presentations, demographics and compliance with Canadian CT Head Rules
Creators: name: Parasuramar, Amaran
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2018
Subjects: subject: Cost-effectiveness
subject: Audit and standards
subject: CT
subject: Trauma
subject: Neuroradiology brain
subject: Emergency
subject: Haemorrhage
subject: Trauma

description: Purpose Methods and materials Results Conclusion Personal information References
description: Purpose: To analyse the demographics, clinical presentations and indications for patients receiving Head CTs after-hoursin a tertiary hospital (The Queen Elizabeth Hospital, Adelaide, South Australia) over a two month period. To determine the incidence of...