cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Diagonal-unitary 2-designs and their implementations by quantum circuits
Creators: name: Nakata, Yoshifumi
name: Murao, Mio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study efficient generations of random diagonal-unitary matrices, an ensemble of unitary matrices diagonal in a given basis with randomly distributed phases for their eigenvalues. Despite the simple algebraic structure, they cannot be achieved by quantum circuits composed of a few-qubit diagonal gates. We introduce diagonal-unitary $t$-designs and present two quantum circuits that implement diagonal-unitary $2$-designs with the computational basis in $N$-qubit systems. One is composed of single-qubit diagonal gates and controlled-phase gates with randomized phases, which achieves an exact diagonal-unitary $2$-design after applying the gates on all pairs of qubits. The number of required gates is $N(N-1)/2$. If the controlled-Z gates are used instead of the controlled-phase gates, the circuit cannot achieve an exact $2$-design, but achieves an $ε$-approximate $2$-design by applying gates on randomly selected pairs of qubits. Due to the random choice of pairs, the circuit obtains extra randomness and the required number of gates is at most $O(N^2(N+\log1/ε))$. We also provide an application of the circuits, a protocol of generating an exact $2$-design of random states by combining the circuits with a simple classical procedure requiring $O(N)$ random classical bits.
description: Revised, 22 pages + Appendix, 3 figures; major revision from v2; presentation is improved in v4; v5 is a published version
title: The role of multidetector computed tomography in diagnosis and staging of suspected scaphoid fractures.
Creators: name: Fagrezos, Dimitris
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Musculoskeletal system
subject: Musculoskeletal bone
subject: CT
subject: Conventional radiography
subject: Image manipulation / Reconstruction
subject: Computer Applications-Detection, diagnosis
subject: Computer Applications-3D
subject: Trauma

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Our aim is to demonstrate the role of multidetector computed tomography in the early diagnosis and classification of scaphoid fractures according to Herbert and Fischer classification system. Up to 30 % of acute scaphoid fractures are missed in...
title: Bilateral basal ganglia and thalamus abnormalities, or when grey turns bright
Creators: name: Anagnostopoulou, Anastasia
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Diagnostic procedure
subject: MR-Diffusion/Perfusion
subject: MR
subject: CT
subject: Neuroradiology brain
subject: CNS
subject: Metabolic disorders
subject: Ischaemia / Infarction
subject: Acute

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To evaluate the normal and abnormal findings of the deep grey matter structures in CT and MR imaging. To review the wide spectrum of differential diagnosis of bilateral basal ganglia and thalamus...
Marcello Frixione e Dario Palladino - La computabilità: algoritmi, logica, calcolatori
Creators: name: Herbstritt, Michele
Publisher: name: Rivista Italiana di Filosofia Analitica Junior
Year: 2011

description: Rivista Italiana di Filosofia Analitica Junior, Vol 2, No 2 (2011): Filosofia della Matematica
Top quark phenomenology of the ADD model and the Minimal Length Scenario
Creators: name: Mimasu, K.
name: Moretti, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study top-(anti)quark pair production at the Tevatron and Large Hadron Collider (LHC) in the context of the Minimal Length Scenario (MLS) of the Arkani-Hamed, Dimopoulos and Dvali (ADD) model of extra dimensions (XDs). We show that sizable effects onto both the integrated and differential cross section due to graviton mediation are expected for a String scale, M_S, of O(1-10TeV) and several XDs, δ, all compatible with current experimental constraints. Potential limits on M_S are extracted. We also highlight clear phenomenological differences between a simple ADD scenario and its modification based on using the MLS as a natural regulator for divergent amplitudes of virtual KK graviton exchange.
description: 15 pages, 6 figures
General Argyres-Douglas Theory
Creators: name: Xie, Dan
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a large class of Argyres-Douglas type theories by compactifying six dimensional (2,0) A_N theory on a Riemann surface with irregular singularities. We give a complete classification for the choices of Riemann surface and the singularities. The Seiberg-Witten curve and scaling dimensions of the operator spectrum are worked out. Three dimensional mirror theory and the central charges a and c are also calculated for some subsets, etc. Our results greatly enlarge the landscape of N=2 superconformal field theory and in fact also include previous theories constructed using regular singularity on the sphere.
description: 55 pages, 20 figures, minor revision and typos corrected
title: Pulmonary imaging in elderly people: HRCT signs of ageing lung and senile pathologies
Creators: name: Palermo, Monica
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Thorax
subject: CT-High Resolution
subject: Outcomes analysis
subject: Education
subject: Geriatrics

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To show the most frequent changes in aged lung and to distinguish the physiological appearance of ageing lung from pathologic findings in chest CT...
Spin dynamics in finite cyclic XY model
Creators: name: Safonov, Evgeniy
name: Lychkovskiy, Oleg
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Evolution of the z-component of a single spin in the finite cyclic XY spin 1/2 chain is studied. Initially one selected spin is polarized while other spins are completely unpolarized and uncorrelated. Polarization of the selected spin as a function of time is proportional to the autocorrelation function at infinite temperature. Initialization of the selected spin gives rise to two wave packets moving in opposite directions and winding over the circle. We express the correlation function as a series in winding number and derive tractable approximations for each term. This allows to give qualitative explanation and quantitative description to various finite-size effects such as partial revivals and transition from regular to erratic behavior.
description: v2: substantially extended; v3: references added, accepted to Phys. Rev. A
The Response of Giant Stars To Dynamical-Timescale Mass Loss
Creators: name: Passy, Jean-Claude
name: Herwig, Falk
name: Paxton, Bill
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the response of giant stars to mass loss. One-dimensional simulations of red and asymptotic giant branch stars with mass loss rates from $10^{-3}$ up to a few \msun/yr show in no case any significant radius increase. The largest radius increase of 0.2% was found in the case with the lowest mass loss rate. For dynamical-timescale mass loss rates, that may be encountered during a common envelope phase, the evolution is not adiabatic. The superadiabatic outer layer of the giant's envelope has a local thermal timescale comparable to the dynamical timescale. Therefore, this layer has enough time to readjust thermally. Moreover, the giant star is driven out of hydrostatic equilibrium and evolves dynamically. In these cases no increase of the stellar radius with respect to its initial value is found. If the mass loss rate is high enough, the superadiabaticity of the outer layer is lost progressively and a radiative zone forms due to a combination of thermal and dynamical readjustment. Conditions for unstable mass transfer based on adiabatic mass loss models that predict a significant radius increase, may need to be re-evaluated.
description: 9 pages, 11 figures, accepted for publication in ApJ. Minor changes since previous version
title: Description of radiological changes of giant cell tumor of bone after treatment with denosumab, ostesarcoma like appereance
Creators: name: Pantoja Ortiz, Violeta
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Outcomes
subject: Multidisciplinary cancer care
subject: Cancer
subject: Diagnostic procedure
subject: CT
subject: Conventional radiography
subject: Oncology
subject: Musculoskeletal bone
subject: Bones

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To describe and illustrate the changes on images of giant cell tumors (GCT) of bone after treatment with...
Holography and condensed matter
Creators: name: Benini, Francesco
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This is a short review of recent developments in the application of AdS/CFT methods to some condensed matter problems. In particular we present the holographic description of a local quantum critical state, related to (non)-Fermi liquids and the strange metal, that appears in large N CFTs with a gravity dual at finite density and zero temperature, and explore its properties by probing it with fermionic operators. Further we discuss possible bosonic and fermionic instabilities, leading to s-, p- or d-wave holographic superconductors and "electron stars". Finally we present a realization of local quantum criticality via an impurity problem.
description: 11 pages, 4 figures; Contribution to the proceedings of the "XVII European Workshop on String Theory 2011", Padova, Italy, 5-9 September 2011; v2: ref added
title: Blends of Bio-Based Poly(Limonene Carbonate) with Commodity Polymers
Creators: name: Neumann, Simon
name: Hu, Pin
name: Bretschneider, Felix
name: Schmalz, Holger
name: Greiner, Andreas
Publisher: name: University of Bayreuth
Year: 2021
Subjects: subject: bio-based
subject: blend
subject: morphology
subject: poly(limonene carbonate)
subject: sustainability
subject: 540

description: In this study, blends of the bio-based poly(limonene carbonate) (PLimC) with different commodity polymers are investigated in order to explore the potential of PLimC toward generating more sustainable polymer materials by reducing the amount of petro- or food-based polymers. PLimC is employed as minority component in the blends. Next to the morphology and thermal properties of the blends the impact of PLimC on the mechanical properties of the matrix polymers is studied. The interplay of incompatibility and zero-shear melt viscosity contrast determines the blend morphology, leading for all blends to a dispersed droplet morphology for PLimC. Blends with polymers of similar structure to PLimC (i.e., aliphatic/aromatic polyester) show the best performance with respect to mechanical properties, whereas blends with polystyrene or poly(methyl methacrylate) are too brittle and polyamide 12 blends show very low elongations at break. In blends with Ecoflex (poly(butylene adipate-co-terephthalate)) and Arnitel EM400 (copoly(ether ester)) with poly(butylene terephthalate) hard and polytetrahydrofuran soft segments) a threefold increase in E-modulus can be achieved, while keeping the elongation at break at reasonable high values of ≈200%, making these blends highly interesting for applications.
Correlated metallic state in honeycomb lattice: Orthogonal Dirac semimetal
Creators: name: Zhong, Yin
name: Liu, Ke
name: Wang, Yong-Qiang
name: Luo, Hong-Gang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A novel gapped metallic state coined orthogonal Dirac semimetal is proposed in the honeycomb lattice in terms of $Z_{2}$ slave-spin representation of Hubbard model. This state corresponds to the disordered phase of slave-spin and has the same thermaldynamical and transport properties as usual Dirac semimetal but its singe-particle excitation is gapped and has nontrivial topological order due to the $Z_{2}$ gauge structure. The quantum phase transition from this orthogonal Dirac semimetal to usual Dirac semimetal is described by a mean-field decoupling with complementary fluctuation analysis and its criticality falls into the universality class of 2+1D Ising model while a large anomalous dimension for the physical electron is found at quantum critical point (QCP), which could be considered as a fingerprint of our fractionalized theory when compared to other non-fractionalized approaches. As byproducts, a path integral formalism for the $Z_{2}$ slave-spin representation of Hubbard model is constructed and possible relations to other approaches and the sublattice pairing states, which has been argued to be a promising candidate for gapped spin liquid state found in the numerical simulation, are briefly discussed. Additionally, when spin-orbit coupling is considered, the instability of orthogonal Dirac semimetal to the fractionalized quantum spin Hall insulator (fractionalized topological insulator) is also expected. We hope the present work may be helpful for future studies in $Z_{2}$ slave-spin theory and related non-Fermi liquid phases in honeycomb lattice.
description: 12 pages,no figures, more discussions added. arXiv admin note: text overlap with arXiv:1203.0635
Modular symbols, Eisenstein series, and congruences
Creators: name: Heumann, Jay
Publisher: name: University of British Columbia
Year: 2013

description: Let E and f be an Eisenstein series and a cusp form, respectively, of the same weight k ≥ 2 and of the same level N, both eigenfunctions of the Hecke operators, and both normalized so that a₁ = 1. The main result we seek is that when E and f are congruent mod a prime p (which may be a prime ideal lying over a rational prime p > 2), the algebraic parts of the special values L(E,χ,j) and L(f,χ,j) satisfy congruences mod the same prime. More explicitly, the congruence result states that, under certain conditions, τ(χ ̄)L(f,χ,j)/(2πi)^(j−1)Ω_f^(sgn(E)) ≡ τ(χ ̄)L(E,χ,j)/(2πi)^(j)Ω_E (mod p) where the sign of E is ±1 depending on E, and Ω_f^(sgn(E)) is the corresponding canonical period for f. Also, χ is a primitive Dirichlet character of conductor m, τ(χ ̄) is a Gauss sum, and j is an integer with 0 < j < k such that (−1)^(j−1) · χ(−1) = sgn(E). Finally, Ω_E is a p-adic unit which is independent of χ and j. This is a generalization of earlier results of Stevens and Vatsal for weight k = 2. In this paper we construct the modular symbol attached to an Eisenstein series, and compute the special values. We give numerical examples of the congruence theorem stated above, and we sketch the proof of the congruence theorem.
title: Cardiac MRI evaluation of dilated cardiomyopathy: what every resident should know
Creators: name: Vingiani, Vincenzo
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Dilatation
subject: Education
subject: MR
subject: Cardiac

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: The purpose of this poster is to illustrate causes, findings and differential diagnosis in dilated cardiomyopathy (DCM) using the cardiac magnetic resonance...
title: Structural brain changes relating to cognition in liver cirrhosis patients with different grades of hepatic encephalopathy
Creators: name: Sänger, Peter
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Statistics
subject: FOS: Mathematics
subject: MR
subject: Neuroradiology brain
subject: Liver
subject: Shunts
subject: Diagnostic procedure
subject: Image verification

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Patients suffering from cirrhosis are at high risk to develop severe neuropsychiatric symptoms, subsumed as hepatic encephalopathy (HE) [1]. HE is an important complication of both acute and chronic liver diseases [2]. Manifestations of HE encompass...
title: Imaging of hydatid cyst in children
Creators: name: choukrad, fatimzahra
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Paediatric
subject: CT
subject: Diagnostic procedure
subject: Infection

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: - Report the different radiological aspects of the hydatid cyst. - Illustrate the different localizations; including cerebral; bone and...
Craniofacial morphology and sleep disordered breathing in children
Creators: name: Aran, Reza
Publisher: name: University of British Columbia
Year: 2013

description: Objective: The aim of this study is to understand how craniofacial morphology and the severity of a malocclusion can contribute to sleep disordered breathing (SDB) symptoms in children when controlled for age, gender and body mass index (BMI). Methods: A total of 301 subjects with complete records were included in this study. Two hundred and thirty-seven were preadolescents, of which 97 were male and 140 were female (mean age 9.9±1.6); 64 were adolescents, of which 24 were male and 40 were female (mean age 13.8±0.9). All the subjects’ parents were asked to complete a SDB questionnaire. Lateral cephalometric images were analyzed to assess the position of the hyoid bone, length of the soft palate, and the maxillary and mandibular dental and skeletal relationship. A clinical examination was performed to determine the Angle classification, Mallampati score, tonsil size (Brodesky), and BMI. Results: Data from 301 children that completed the questionnaires and underwent a cephalometric analysis were evaluated. Subjects were divided into two groups based on their age and each group was further divided based on gender. By comparing preadolescents with adolescents we found that preadolescents presented a significantly higher incidence of hyperactivity, morning headaches, more frequent snoring, and bedwetting. Adolescents exhibited significantly higher daytime sleepiness, difficulty getting up, and impaired daytime function. When comparing female and male subjects, we found that frequent snoring, and morning headaches were more prevalent among females, while daytime sleepiness, and hyperactivity were more common among males. Craniofacial features that have a significant relationship with SDB symptoms are, a lower position of the hyoid bone, retruded mandible, steeper mandibular plane angle, and retroclined lower incisors. There was no statistically significant relationship between Angle classifications, tonsil size, Mallampati score, and BMI with SDB symptoms in this sample. Conclusion: This study suggests that craniofacial morphology, but not severity of malocclusions, could be a potential contributing factor to SDB symptom severity.
D7.7: Dissemination Report I
Creators: name: Nefeli Politi-Stergiou
name: Papadakis, Dimitri
name: Mamais, Eleftherios
Publisher: name: Zenodo
Year: 2016

description: The main objective of this deliverable is to provide a comprehensive overview of the dissemination, communication and marketing tools and activities developed during M0 – M06 of the APOLLO project. The overall objective of the dissemination and communication activities is to promote the results and benefits of the project to a range of relevant target audiences, in order to foster a sustainable customer base for the future commercial service.
Solution of linear systems with sparse matrices
Creators: name: Grund, Friedrich
Publisher: name: Weierstrass Institute
Year: 2003
Subjects: subject: Direct Linear Solver
subject: Sparse-Matrix-Techniques
subject: Parallel Computation
subject: Circuit Simulation
subject: Chemical Process Simulation
subject: 65F05
subject: 65F50
subject: 65Y05

description: For large scale problems in electric circuit simulation as well as in chemical process simulation, the linear solver often needs about 50 - 80 % of the total amount of computing time. For that purpose, we consider direct methods for the numerical solution of linear systems of equations with unsymmetric sparse coefficient matrices. The Gaussian elimination method is applied to solve the linear system. Here, the row permutation is used to provide numerical stability and the column permutation is chosen to control sparsity. In a new approach, implemented in the solver GSPAR2, the determination of the pivot columns is done with a modified algorithm, which has only a complexity of O(n). A partial pivoting technique is used to maintain numerical stability. For solving several linear systems with the same pattern structure of the coefficient matrix efficiently, we generate a list of pseudo code instructions for the factorization of the matrices. With it, the solver GSPAR2 has been proven successful within the simulation of several real life problems. For a number of linear systems arising from different technical problems, the computing times of GSPAR2 are compared to that of some recently released linear solvers.
La escritura de una identidad chino-peruana
Creators: name: Quaglia, Margherita
Publisher: name: Università degli  Studi di Milano
Year: 2012

description: La escritura de una identidad chino-peruana
Una conversación con Siu Kam Wen
(19 giugno 2012)
por Margherita Quaglia
description: Altre Modernità, No 8 (2012): Orientalismi
Lectures on non-perturbative effects in large N gauge theories, matrix models and strings
Creators: name: Marino, Marcos
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In these lectures I present a review of non-perturbative instanton effects in quantum theories, with a focus on large N gauge theories and matrix models. I first consider the structure of these effects in the case of ordinary differential equations, which provide a model for more complicated theories, and I introduce in a pedagogical way some technology from resurgent analysis, like trans-series and the resurgent version of the Stokes phenomenon. After reviewing instanton effects in quantum mechanics and quantum field theory, I address general aspects of large N instantons and then present a detailed review of non-perturbative effects in matrix models. Finally, I also consider two applications of these techniques in string theory
description: 95 pages, many figures; v2: misprints corrected, clarifications added
Nonequilibrium Quantum Phase Transitions in the Dicke Model
Creators: name: Bastidas, V. M.
name: Emary, C.
name: Regler, B.
name: Brandes, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We establish a set of nonequilibrium quantum phase transitions in the Dicke model by considering a monochromatic nonadiabatic modulation of the atom-field coupling. For weak driving the system exhibits a set of sidebands which allow the circumvention of the no-go theorem which otherwise forbids the occurence of superradiant phase transitions. At strong driving we show that the system exhibits a rich multistable structure and exhibits both first- and second-order nonequilibrium quantum phase transitions.
description: 4 pages, 3 Figures, and supplementary material. This new version contains corrected typos, new references and new versions of the figures. Published by Physical Review Letters
title: Building Belonging: Archives and Architecture as Means for Black Reparation
Creators: name: Lubitz, Adam
Publisher: name: Georgia Institute of Technology
Year: 2025

description: The photograph and the drawn map as media offer us an ability to travel through time: by their very nature as objects that look into history, but also as a means for informing the future. While typically employed as a before-and-after comparative tool, even as a triumphalist statement of how the present is built from what was previously mere speculative design, a photograph can also capture a fleeting, exact moment of disaster or immediate change, and in doing so provide evidence of a specific and systemic crime thats been committed. Using an analysis of the photograph and the map as “tangible” heritage objects, or remnants in lieu of extant, let alone in-situ built fabric, this paper seeks to examine the various means of telling the more complete story of the mid-20th century Black beach communities in Santa Monica, California, as a means toward potential reparations. Taken as an initial case study, this location has been selected because of contemporary conversation regarding Black reparations in California. In doing so, this paper contests conventional heritage practices with regards to the necessity of these long-overdue reparations for displaced communities. By using some of the few documents available to overcome the deficiency of the archive in such histories, this paper sheds light on these communities who lost their homes during what was claimed to be a slum clearance.
Tests of PMT Signal Read-out of Liquid Argon Scintillation with a New Fast Waveform Digitizer
Creators: name: Acciarri, R.
name: Canci, N.
name: Cavanna, F.
name: Cortopassi, A.
name: D'Incecco, M.
name: Mini, G.
name: Pietropaolo, F.
name: Romboli, A.
name: Segreto, E.
name: Szelc, A. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Nuclear Experiment (nucl-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The CAEN V1751 is a new generation of Waveform Digitizer recently introduced by CAEN SpA. It features 8 Channels per board, 10 bit, 1 GS/s using Flash ADCs Waveform Digitizers (or 4 channels at 2 GS/s in Dual Edge Sampling mode) with threshold and Auto-Trigger capabilities. This provides a good basis for data acquisition in Dark Matter searches using PMTs to detect scintillation light in liquid argon, as it matches the requirements for measuring the fast scintillation component. The board was tested by operating it in real experimental conditions and by comparing it with a state of the art digital oscilloscope. We find that the sampling at 1 or 2 GS/s is appropriate for the reconstruction of the fast component of the scintillation light in argon (characteristic time of about 6-7 ns) and the extended dynamic range, after a small customization, allows for the detection of signals in the range of energy needed. The bandwidth is found to be adequate and the intrinsic noise is very low.
description: Published in Journal of Instrumentation
Wounded nucleon model with realistic nucleon-nucleon collision profile and observables in relativistic heavy-ion collisions
Creators: name: Rybczyński, Maciej
name: Broniowski, Wojciech
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the influence of the nucleon-nucleon collision profile (probability of interaction as a function of the nucleon-nucleon impact parameter) in the wounded nucleon model and its extensions on several observables measured in relativistic heavy-ion collisions. We find that the participant eccentricity coefficient, $ε^\ast$, as well as the higher harmonic coefficients, $ε_n^\ast$, are reduced by 10-20% for mid-peripheral collisions when the realistic (Gaussian) profile is used, as compared to the case with the commonly-used hard-sphere profile. Similarly, the multiplicity fluctuations, treated as the function of the number of wounded nucleons in one of the colliding nuclei, are reduced by 10-20%. This demonstrates that the Glauber Monte Carlo codes should necessarily use the realistic nucleon-nucleon collision profile in precision studies of these observables. The Gaussian collision profile is built-in in {\tt GLISSANDO}.
description: 8 pages, 7 figures
Exploring the lived experience of visual creative expression for young adult cancer survivors
Creators: name: Green, Amy Rose
Publisher: name: University of British Columbia
Year: 2013

description: The purpose of this research was to contribute experiential understanding of the lived experience of creative expression (both individually and/or within a therapeutic setting) in the particular context of young adult cancer survivors. It utilized van Manen’s (1990) hermeneutic phenomenological approach to answer the following question: “What is the lived experience and lived meaning of visual creative expression for young adult cancer survivors?” Seven young adults (diagnosed with cancer between ages 18 to 35) were engaged in two conversations (one main interview and one check-in interview) about their creative expression experiences. Participants were also invited to reflect on their insights, ideas, and experiences of creative expression through emails to the researcher. A thematic reflection and guided existential reflection (based on the four lifeworlds of lived body, lived time, lived space, and lived relation) were utilized to further understand, organize, and reveal the ways the participants experienced the phenomenon of creative expression. In line with van Manen (1990), data analysis was conducted through the writing and re-writing of findings in a reflective and vocative manner. Seven themes were uncovered that could be organized into the four lifeworlds: lived time involved being in the flow; lived body involved allowing the body to express itself and renegotiating control; lived space involved being impacted by a permanent change to the environment; and, finally, lived relation involved being seen, respect for the art as other, and giving back. The seven themes within these four life worlds intertwined to embody two additional themes: increased self-understanding and healing the mind and body. As the first study to explore the lived experience of visual creative expression specifically for young adult cancer survivors, this research begins to fill a large gap in the literature. Findings suggest that visual creative expression can be a meaningful and impactful experience for young adult cancer survivors, and that this experience espouses both similarities and differences from experiences of creative expression for older adults that have been previously described in the literature. Specific recommendations are made for future research, in addition to implications for practitioners working with the young adult cancer survivor population.
Seeking Commonality Through Theatre: Bridging Divides in a Polarized America
Creators: name: Esteves, Daniela
Publisher: name: American University
Year: 2023
Subjects: classificationCode: 3604
subject: Performing arts
classificationCode: 360403
subject: Drama, theatre and performance studies
classificationCode: 4408
subject: Political science
subject: FOS: Political science
classificationCode: 441004
subject: Social change
classificationCode: 470204
subject: Cultural and creative industries

description: As community leaders, professional nonprofit theatre and arts managers can have a key role in shaping the current generation. Through their selected programming, they can create a sense of obligation and develop empathetic discussion within audiences. This study looks at the intersection of theatre and social impact as it regards tackling the political polarization facing today’s society. It reviews what has caused American society to become polarized and what are known solutions to bridge divides. It investigates how theatre can be used to advance communication across differences and makes practical recommendations that theatre organizations can follow when curating a season of impactful work. The project explores themes of theatre as a mediator in conflict, theatre as a vehicle for social change, hybridity in programming, and more. Findings from the study, consisting of a survey questionnaire and personal interviews, reveal a disconnect for nonprofit theatre industry professionals between using theatre as dialogue and actively bringing different perspectives into theater spaces.
Associated production of a photon with dark matter pair at the ILC within the Littlest Higgs model with T-parity
Creators: name: Qiao, Qing-Peng
name: Xu, Bin
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the context of the Littlest Higgs model with T-parity, the heavy photon ($A_{H}$) is supposed to be an ideal dark matter (DM) candidate. One direct proof of validity of the model is to produce the heavy photon at collider. In this paper, we investigate the associated production of a photon with heavy photon pair at the planned international $e^ +e^ -$ linear collider (ILC), i.e., $ e^+ e^-\to A_{H}A_{H}γ$ and show the distributions of the transverse momenta of the photon. The numerical results indicate that the heavy photon production rate could reach several $fb$ at the low mass parameter space and the characteristic signal is a single high energetic photon and missing energy, carried by the heavy photons. All in all, it can be good chance to observe the heavy photon via this process with the high yearly luminosity of the ILC.
description: 11 pages, 5 figures
General relativistic simulations of black hole-neutron star mergers: Effects of magnetic fields
Creators: name: Etienne, Zachariah B.
name: Liu, Yuk Tung
name: Paschalidis, Vasileios
name: Shapiro, Stuart L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: As a neutron star (NS) is tidally disrupted by a black hole (BH) companion at the end of a BH-NS binary inspiral, its magnetic fields will be stretched and amplified. If sufficiently strong, these magnetic fields may impact the gravitational waveforms, merger evolution and mass of the remnant disk. Formation of highly-collimated magnetic field lines in the disk+spinning BH remnant may launch relativistic jets, providing the engine for a short-hard GRB. We analyze this scenario through fully general relativistic, magnetohydrodynamic (GRMHD) BHNS simulations from inspiral through merger and disk formation. Different initial magnetic field configurations and strengths are chosen for the NS interior for both nonspinning and moderately spinning (a/M=0.75) BHs aligned with the orbital angular momentum. Only strong interior (Bmax~10^17 G) initial magnetic fields in the NS significantly influence merger dynamics, enhancing the remnant disk mass by 100% and 40% in the nonspinning and spinning BH cases, respectively. However, detecting the imprint of even a strong magnetic field may be challenging for Advanced LIGO. Though there is no evidence of mass outflows or magnetic field collimation during the preliminary simulations we have performed, higher resolution, coupled with longer disk evolutions and different initial magnetic field configurations, may be required to definitively assess the possibility of BHNS binaries as short-hard GRB progenitors.
description: 31 pages, 26 figures, 3 tables, accepted for publication to PRD
Supplementary document for High-density multicore fiber with single mode cores and low modal crosstalk for visible light applications - 7383300.pdf
Creators: name: Khosravi, Mohammadhossein
name: Lorenz, Adrian
name: Huang, Wenqin
name: Schwuchow, Anka
name: Wieduwilt, Torsten
name: Schmidt, Markus
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplemental Document
Multiboson spin-wave theory for Ba2CoGe2O7, a spin-3/2 easy-plane Neel antiferromagnet with strong single-ion anisotropy
Creators: name: Romhányi, Judit
name: Penc, Karlo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider the square-lattice antiferromagnetic Heisenberg Hamiltonian extended with a single-ion axial anisotropy term as a minimal model for the multiferroic Ba2CoGe2O7. Developing a multiboson spin-wave theory, we investigate the dispersion of the spin excitations in this spin-3/2 system. As a consequence of a strong single-ion anisotropy, a stretching (longitudinal) spin-mode appears in the spectrum. The inelastic neutron scattering spectra of Zheludev et al. [Phys. Rev. B 68, 024428 (2003)] are successfully reproduced by the low energy modes in the multiboson spin-wave theory, and we anticipate the appearance of the spin stretching modes at 4meV that can be identified using the calculated dynamical spin structure factors. We expect the appearance of spin stretching modes for any S>1/2 compound where the single-ion anisotropy is significant.
description: 11 pages, 5 figures, references added, minor modifications in the text
title: Intracavitary application of ultrasound contrast agent in paediatric uroradiology
Creators: name: Kocutar, Tina
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Congenital
subject: Artifacts
subject: Diagnostic procedure
subject: Contrast agent-other
subject: Ultrasound
subject: Urinary Tract / Bladder
subject: Paediatric
subject: Abdomen

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To describe intracavitary application of ultrasound contrast agent (UCA) in paediatric uroradiology and to illustrate its role as a reliable, radiation-free, alternative imaging...
Hubble without the Hubble: cosmology using advanced gravitational-wave detectors alone
Creators: name: Taylor, Stephen R.
name: Gair, Jonathan R.
name: Mandel, Ilya
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate a novel approach to measuring the Hubble constant using gravitational-wave (GW) signals from compact binaries by exploiting the narrowness of the distribution of masses of the underlying neutron-star population. Gravitational-wave observations with a network of detectors will permit a direct, independent measurement of the distance to the source systems. If the redshift of the source is known, these inspiraling double-neutron-star binary systems can be used as standard sirens to extract cosmological information. Unfortunately, the redshift and the system chirp mass are degenerate in GW observations. Thus, most previous work has assumed that the source redshift is obtained from electromagnetic counterparts. In this paper, we explore what we can learn about the background cosmology and the mass distribution of neutron stars from the set of neutron-star (NS) mergers detected by such a network. We use a Bayesian formalism to analyze catalogs of NS-NS inspiral detections. We find that it is possible to constrain the Hubble constant, H_0, and the parameters of the NS mass function using gravitational-wave data alone, without relying on electromagnetic counterparts. Under reasonable assumptions, we will be able to determine H_0 to +/- 10% using ~100 observations, provided the Gaussian half-width of the underlying double NS mass distribution is less than 0.04 solar masses. The expected precision depends linearly on the intrinsic width of the NS mass function, but has only a weak dependence on H_0 near the default parameter values. Finally, we consider what happens if, for some fraction of our data catalog, we have an electromagnetically measured redshift. The detection, and cataloging, of these compact-object mergers will allow precision astronomy, and provide a determination of H_0 which is independent of the local distance scale.
description: 22 pages, 8 figures, 3 tables. Minor changes, including formatting, to reflect published version. Some references updated and corrected
title: Are you sure about that? An Audit of Provisional versus Final Reports of Urgent CT and MRI overnight at a busy inner city Major Trauma Centre
Creators: name: Stephenson, Robert
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Quality assurance
subject: Education and training
subject: Acute
subject: Audit and standards
subject: MR
subject: CT
subject: Trauma
subject: Emergency

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Provisional reports are produced by the on-call registrar and finalised by a consultant within 24 hours. The objectives of this audit are to; Assess the frequency of discrepancy between these reports. Investigate the potential impact of...
Ultrasound guidance for epidural anesthesia
Creators: name: Ashab, Hussam Al-Deen
Publisher: name: University of British Columbia
Year: 2013

description: We propose an augmented reality system to automatically identify lumbar vertebral levels and the lamina region in ultrasound-guided epidural anesthesia. Spinal needle insertion procedures require careful placement of a needle, both to ensure effective therapy delivery and to avoid damaging sensitive tissue such as the spinal cord. An important step in such procedures is the accurate identification of the vertebral levels, which is currently performed using manual palpation with a reported success rate of only 30%. In this thesis, we propose a system using a trinocular camera which tracks an ultrasound transducer during the acquisition of a sequence of B-mode images. The system generates a panorama ultrasound image of the lumbar spine, automatically identifies the lumbar levels in the panorama image, and overlays the identified levels on a live camera view of the patient’s back. Several experiments were performed to test the accuracy of vertebral height in panorama images, the accuracy of vertebral levels identification in panorama images, the accuracy of vertebral levels identification on the skin, and the impact on accuracy with spine arching. The results from 17 subjects demonstrate the feasibility of the approach and capability of achieving an error within a clinically acceptable range for epidural anesthesia. The overlaid marks on the screen are used to assist locating needle puncture site. Then, an automated slice selection algorithm is used to guide the operator positioning a 3D transducer such that the best view of the target anatomy is visible in a predefined re-slice of the 3D ultrasound volume. This re-slice is used to observe, in real time, the trajectory of a needle attached to the 3D transducer, towards the target. The method is based on Haar-like features and AdaBoost learning algorithm. We have evaluated the method on a set of 32 volumes acquired from volunteer subjects by placing the 3D transducer on L1-L2, L2-L3, L3-L4 and L4- L5 interspinous gaps on each side of the lumbar spine. Results show that the needle insertion plane can be identified with a root mean square error of 5.4 mm, accuracy of 99.6%, and precision of 78.7%.
Path integration in the field of a topological defect: the case of dispiration
Creators: name: Inomata, Akira
name: Junker, Georg
name: Raynolds, James
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The motion of a particle in the field of dispiration (due to a wedge disclination and a screw dislocation) is studied by path integration. By gauging $SO(2) \otimes T(1)$, first, we derive the metric, curvature, and torsion of the medium of dispiration. Then we carry out explicitly path integration for the propagator of a particle moving in the non-Euclidean medium under the influence of a scalar potential and a vector potential. We obtain also the winding number representation of the propagator by taking the non-trivial topological structure of the medium into account. We extract the energy spectrum and the eigenfunctions from the propagator. Finally we make some remarks for special cases. Particularly, paying attention to the difference between the result of the path integration and the solution of Schrödinger's equation in the case of disclination, we suggest that Schrödinger equation may have to be modified by a curvature term.
title: Spectrum of imaging findings of small bowel diseases on MDCT Enterography
Creators: name: singal, Ashana
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: CT-Enterography
subject: Small bowel
subject: Abdomen
subject: Diagnostic procedure
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To present a pictorial review o various pathological conditions affecting small bowel on CT enterography. To discuss the characteristic imaging findings of each entity which help to reach the final diagnosis. To discuss the current role of CT...
title: How to do the twist!
Creators: name: Gallardo Madueño, Guillermo
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Haemodynamics / Flow dynamics
subject: Fistula
subject: Arteriovenous malformations
subject: Imaging sequences
subject: Equipment
subject: Diagnostic procedure
subject: MR-Functional imaging
subject: MR-Angiography
subject: MR
subject: Veins / Vena cava
subject: Vascular
subject: Arteries / Aorta

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To discuss time-resolved MR angiography (TR-MRA) sequences according to its physical bases and differences . To review clinical scenarios where TR-MRA can be the best noninvasive tool. To depict how to perform and report time-resolved MRA. To show...
Uncertainty Quantification in Hybrid Dynamical Systems
Creators: name: Sahai, Tuhin
name: Pasini, Jose Miguel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computation (stat.CO)
subject: Dynamical Systems (math.DS)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Uncertainty quantification (UQ) techniques are frequently used to ascertain output variability in systems with parametric uncertainty. Traditional algorithms for UQ are either system-agnostic and slow (such as Monte Carlo) or fast with stringent assumptions on smoothness (such as polynomial chaos and Quasi-Monte Carlo). In this work, we develop a fast UQ approach for hybrid dynamical systems by extending the polynomial chaos methodology to these systems. To capture discontinuities, we use a wavelet-based Wiener-Haar expansion. We develop a boundary layer approach to propagate uncertainty through separable reset conditions. We also introduce a transport theory based approach for propagating uncertainty through hybrid dynamical systems. Here the expansion yields a set of hyperbolic equations that are solved by integrating along characteristics. The solution of the partial differential equation along the characteristics allows one to quantify uncertainty in hybrid or switching dynamical systems. The above methods are demonstrated on example problems.
Давньоруська вишивка ХІІ ст
Creators: name: Орлов, Руслан
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 430101
subject: Archaeological science

description: Орлов Р.С. Давньоруська вишивка ХІІ ст — Археологія №1, 1973, с.41-50.Ancient Rus embroidery of the 12th century