cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Concentration phenomena for a fractional Schrödinger-Kirchhoff type equation
Creators: name: Ambrosio, Vincenzo
name: Isernia, Teresa
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper we deal with the multiplicity and concentration of positive solutions for the following fractional Schrödinger-Kirchhoff type equation \begin{equation*} M\left(\frac{1}{\varepsilon^{3-2s}} \iint_{\mathbb{R}^{6}}\frac{|u(x)- u(y)|^{2}}{|x-y|^{3+2s}} dxdy + \frac{1}{\varepsilon^{3}} \int_{\mathbb{R}^{3}} V(x)u^{2} dx\right)[\varepsilon^{2s} (-Δ)^{s}u+ V(x)u]= f(u) \, \mbox{in} \mathbb{R}^{3} \end{equation*} where $\varepsilon>0$ is a small parameter, $s\in (\frac{3}{4}, 1)$, $(-Δ)^{s}$ is the fractional Laplacian, $M$ is a Kirchhoff function, $V$ is a continuous positive potential and $f$ is a superlinear continuous function with subcritical growth. By using penalization techniques and Ljusternik-Schnirelmann theory, we investigate the relation between the number of positive solutions with the topology of the set where the potential attains its minimum.
description: Mathematical Methods in the Applied Sciences (2017)
Community Engagement , Open Science and the Virtual Observatory
Creators: name: Berriman, Bruce
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Astronomy
subject: Education
subject: Radio astronomy
subject: Time-domain astronomy
subject: Visualization
subject: FAIR Principles
subject: Open Science
subject: Community Engagement
subject: Virtual Observatory

description: Presentations given at the  "Division B  Days, Session 3b  Community Engagement,  Open Science and the Virtual Observatory" session at the International Astronomical Union (IAU) General Assembly 2024, Cape Town, South Africa (August 6-15, 2014)
Star formation, supernovae, iron, and alpha: consistent cosmic and Galactic histories
Creators: name: Maoz, Dan
name: Graur, Or
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent versions of the observed cosmic star-formation history (SFH) have resolved an inconsistency with the stellar mass density history. We show that the revised SFH also scales up the delay-time distribution (DTD) of Type Ia supernovae (SNe Ia), as determined from the observed volumetric SN Ia rate history, aligning it with other field-galaxy SN Ia DTD measurements. The revised-SFH-based DTD has a $t^{-1.1 \pm 0.1}$ form and a Hubble-time-integrated production efficiency of $N/M_\star=1.3\pm0.1$ SNe Ia per $1000~{\rm M_\odot}$ of formed stellar mass. Using these revised histories and updated empirical iron yields of the various SN types, we re-derive the cosmic iron accumulation history. Core-collapse SNe and SNe Ia have contributed about equally to the total mass of iron in the Universe today. We find the track of the average cosmic gas element in the [$α$/Fe] vs. [Fe/H] abundance-ratio plane. The track is broadly similar to the observed main locus of Galactic stars in this plane, indicating a Milky Way (MW) SFH similar in form to the cosmic one. We easily find a simple MW SFH that makes the track closely match this stellar locus. Galaxy clusters appear to have a higher-normalization DTD. This cluster DTD, combined with a short-burst MW SFH peaked at $z=3$, produces a track that matches remarkably well the observed "high-$α$" locus of MW stars, suggesting the halo/thick-disk population has had a galaxy-cluster-like formation mode. Thus, a simple two-component SFH, combined with empirical DTDs and SN iron yields, suffices to closely reproduce the MW's stellar abundance patterns.
description: Accepted by ApJ
Manajemen Naskah OJS 3
Creators: name: Yeni Widiyawati
Publisher: name: Zenodo
Year: 2020

description: Materi ini disampaikan pada Webinar RJI Jateng Seri 3 Journal Publishing Management, tanggal 11 Juni 2020 yang diselenggarakan oleh Universitas IVET Semarang bekerjasama dengan Relawan Jurnal Indonesia Pengurus Daerah Jawa Tengah
Quantum dimer models emerging from large-spin ultracold atoms
Creators: name: Sundar, Bhuvanesh
name: Rutkowski, Todd C.
name: Mueller, Erich J.
name: Lawler, Michael J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We propose an experimental protocol for using cold atoms to create and probe quantum dimer models, thereby exploring the Pauling-Anderson vision of a macroscopic collection of resonating bonds. This process can allow the study of exotic crystalline phases, fractionalization, topological spin liquids, and the relationship between resonating dimers and superconductivity subjects which have been challenging to address in solid-state experiments. Our key technical development is considering the action of an off-resonant photoassociation laser on large spin atoms localized at the sites of a deep optical lattice. The resulting superexchange interaction favors nearest-neighbor singlets. We derive an effective Hamiltonian in terms of these dimer degrees of freedom, finding that it is similar to well-known quantum dimer models, which boast a rich variety of valence bond crystal and spin liquid phases. We numerically study the ground state, explain how to tune the parameters, and develop a protocol to directly measure the dimers and their resonating patterns.
description: 13 pages including references and appendices, 8 figures (including supplementary materials); Included fermionic species as candidates to simulate the quantum dimer model; Reorganized manuscript to improve readability; Added numerical estimates of energy scales in our system; Conclusions unchanged
A linear threshold for uniqueness of solutions to random jigsaw puzzles
Creators: name: Martinsson, Anders
Publisher: name: arXiv
Year: 2017
Subjects: subject: Probability (math.PR)
subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 60C05, 05C10

description: We consider a problem introduced by Mossel and Ross [Shotgun assembly of labeled graphs, arXiv:1504.07682]. Suppose a random $n\times n$ jigsaw puzzle is constructed by independently and uniformly choosing the shape of each "jig" from $q$ possibilities. We are given the shuffled pieces. Then, depending on $q$, what is the probability that we can reassemble the puzzle uniquely? We say that two solutions of a puzzle are similar if they only differ by permutation of duplicate pieces, and rotation of rotationally symmetric pieces. In this paper, we show that, with high probability, such a puzzle has at least two non-similar solutions when $2\leq q \leq \frac{2}{\sqrt{e}}n$, all solutions are similar when $q\geq (2+\varepsilon)n$, and the solution is unique when $q=ω(n)$.
description: 15 pages, 3 figures. A weaker form of part (i) of Theorem 1.1 was shown by myself in arXiv:1605.07151v2. It is restated here with a much simpler proof, as a part of the main result
The impact of voluntary adoption of ISO 14001 among firms in Asia
Creators: name: Hiew, Ailu
Publisher: name: University of Westminster
Year: 2010

description: Since the late 1990s there has been an increasing awareness of the importance of understanding environmental management systems (EMS) and their relationships with sustainability, competitiveness and business practice in the West. Since its introduction in 1996 and revision in 2004, an EMS based on the ISO 14001 voluntary standard has remained the most widely implemented environmental standard implemented by the business community in Asia to pursue environmental sustainability. Multinational corporations (MNCs) have played a pivotal role in the greening of the supply chain within the region in pushing firms to conduct business in line with international standards. Widely recognised as a dependable international eco-label, firms who are certified to ISO 14001 are able to sustain their businesses within the global market by conforming to international standards as well as meeting customers’ demands. This thesis aimed to fill a gap in our knowledge of how businesses across Asia tackled environmental issues and the depth of their understanding in issues relating to business and sustainability. In doing so, this thesis examined the impact of the implementation of ISO 14001 EMS among MNCs and large firms in Asia. This research aimed to determine if the implementation of ISO 14001 EMS over a period of time had brought wider benefits to firms. The methodology applied in this study was based on multiple case studies evidence on six Asian firms in different industry sectors. Evidence from the case studies had identified various internal and external benefits experienced by firms who had implemented ISO 14001 EMS for a number of years. Findings based on the case studies also demonstrated that firms who had implemented ISO 14001 EMS over a period of time were more likely to expand their environmental measures practices by adopting other voluntary initiatives.
Complex structure of the carbon arc discharge for synthesis of nanotubes
Creators: name: Vekselman, V.
name: Feurer, M.
name: Huang, T.
name: Stratton, B.
name: Raitses, Y.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Comprehensive non-invasive spectroscopic techniques and electrical measurements of the carbon arc revealed two distinguishable plasma synthesis regions in the radial direction normal to the arc axis. These regions, which are defined as the arc core and the arc periphery, are shown to have very different compositions of carbon species with different densities and temperatures. The colder arc periphery is dominated by carbon diatomic molecules (C2), which are in the minority in the composition of the hot arc core. These differences are due to a highly non-uniform distribution of the arc current, which is mainly conducted through the arc core populated with carbon atoms and ions. Therefore, the ablation of the graphite anode is governed by the arc core, while the formation of carbon molecules occurs in the colder arc periphery. This result is consistent with previous predictions that the plasma environment in the arc periphery is suitable for synthesis of carbon nanotubes.
Hennings, Emmy: Von Frauen und Gärten in Sizilien (2 Fassungen) / Hennings, Emmy: Von Frauen und Gärten in Sizilien (1. Fassung)
Creators: name: Ball-Hennings, Emmy
Publisher: name: [s.n.]
Year: 2024

description: Dokument
Spin phonon interactions and magneto-thermal transport behavior in p-Si
Creators: name: Lou, Paul
name: Oliveira, Laura de Sousa
name: Tang, Chi
name: Greaney, Alex
name: Kumar, Sandeep
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The spin-phonon interaction is the dominant process for spin relaxation in Si, and as thermal transport in Si is dominated by phonons, one would expect spin polarization to influence Si's thermal conductivity. Here we report the experimental evidence of just such a coupling. We have performed concurrent measurements of spin, charge, and phonon transport in p-doped Si across a wide range of temperatures. In an experimental system of a freestanding two um p-Si beam coated on one side with a thin (25 nm) ferromagnetic spin injection layer, we use the self-heating 3 omega method to measure changes in electrical and thermal conductivity under the influence of a magnetic field. These magneto-thermal transport measurements reveal signatures in the variation of electrical and thermal transport that are consistent with spin-phonon interaction. Raman spectroscopy measurements and first principle's calculations support that these variations are due to spin-phonon interaction. Spin polarization leads to softening of phonon modes, a reduction in the group velocity of acoustic modes, and a subsequent decrease in thermal conductivity at room temperature. Moreover, magneto-thermal transport measurements as a function of temperature indicate a change in the spin-phonon relaxation behavior at low temperature.
description: 23 pages, 3 main figures, 4 supplemental figure
Dynamic Signaling Games with Quadratic Criteria under Nash and Stackelberg Equilibria
Creators: name: Sarıtaş, Serkan
name: Yüksel, Serdar
name: Gezici, Sinan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optimization and Control (math.OC)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: This paper considers dynamic (multi-stage) signaling games involving an encoder and a decoder who have subjective models on the cost functions. We consider both Nash (simultaneous-move) and Stackelberg (leader-follower) equilibria of dynamic signaling games under quadratic criteria. For the multi-stage scalar cheap talk, we show that the final stage equilibrium is always quantized and under further conditions the equilibria for all time stages must be quantized. In contrast, the Stackelberg equilibria are always fully revealing. In the multi-stage signaling game where the transmission of a Gauss-Markov source over a memoryless Gaussian channel is considered, affine policies constitute an invariant subspace under best response maps for Nash equilibria; whereas the Stackelberg equilibria always admit linear policies for scalar sources but such policies may be non-linear for multi-dimensional sources. We obtain an explicit recursion for optimal linear encoding policies for multi-dimensional sources, and derive conditions under which Stackelberg equilibria are informative.
description: 17 pages
Are Starburst Galaxies Proton Calorimeters?
Creators: name: Wang, Xilu
name: Fields, Brian D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Several starburst galaxies have been observed in the GeV and TeV bands. In these dense environments, gamma-ray emission should be dominated by cosmic-ray interactions with the interstellar medium ($p_{\rm cr}p_{\rm ism} \to π^{0} \to γγ$). Indeed, starbursts may act as proton "calorimeters" where a substantial fraction of cosmic-ray energy input is emitted in gamma rays. Here we build a one-zone, "thick-target" model implementing calorimetry and placing a firm upper bound on gamma-ray emission from cosmic-ray interactions. The model assumes that cosmic rays are accelerated by supernovae (SNe), and all suffer nuclear interactions rather than escape. Our model has only two free parameters: the cosmic-ray proton acceleration energy per supernova $ε_{\rm cr}$, and the proton injection spectral index $s$. We calculate the pionic gamma-ray emission from 10 MeV to 10 TeV, and derive thick-target parameters for six galaxies with Fermi, H.E.S.S., and/or VERITAS data. Our model provides good fits for the M82 and NGC 253, and yields $ε_{\rm cr}$ and $s$ values suggesting that supernova cosmic-ray acceleration is similar in starbursts and in our Galaxy. We find that these starbursts are indeed nearly if not fully proton calorimeters. For NGC 4945 and NGC 1068, the models are consistent with calorimetry but are less well-constrained due to the lack of TeV data. However, the Circinus galaxy and the ultraluminous infrared galaxy Arp 220 exceed our pionic upper-limit, possible explanations are discussed.
description: 17 pages, 8 figures. v2 matches version to appear in MNRAS
Heavy neutrino mixing in the T2HK, the T2HKK and an extension of the T2HK with a detector at Oki Islands
Creators: name: Abe, Yugo
name: Asano, Yusuke
name: Haba, Naoyuki
name: Yamada, Toshifumi
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the discovery potential for the mixing of heavy isospin-singlet neutrinos in extensions of the Tokai-to-Kamioka (T2K) experiment: The Tokai-to-Hyper-Kamiokande (T2HK), the Tokai-to-Hyper-Kamiokande-to-Korea (T2HKK), and a plan of adding a new detector at Oki Islands to the T2HK. We parametrize the mixing of heavy neutrinos in terms of a non-unitary mixing matrix acting on active flavors. It is shown that in the T2HK and T2HKK, the sensitivity to heavy neutrino mixing deteriorates for some values of $CP$-violating phases in the standard and the non-unitary mixing matrices, but the deterioration is drastically mitigated if a detector at Oki Islands is added to the T2HK. We also consider the feasibility of measuring the mass hierarchy and the standard $CP$-violating phase $δ_{CP}$ in the presence of heavy neutrino mixing, by fitting experimental data with the standard oscillation parameters only, i.e., under the assumption of unitary mixing. It is revealed that such measurement can be performed to some accuracy in the T2HKK and the extension of the T2HK with a detector at Oki Islands, owing to the fact that data with largely varying $L/E$ are collected in these experiments, while it cannot be in the T2HK.
description: 41 pages, 16 figures. Version accepted for publication in EPJC
Dynamic load balancing of parallel road traffic simulation
Creators: name: Igbe, Damian
Publisher: name: University of Westminster
Year: 2010

description: The objective of this research was to investigate, develop and evaluate dynamic load-balancing strategies for parallel execution of microscopic road traffic simulations. Urban road traffic simulation presents irregular, and dynamically varying distributed computational load for a parallel processor system. The dynamic nature of road traffic simulation systems lead to uneven load distribution during simulation, even for a system that starts off with even load distributions. Load balancing is a potential way of achieving improved performance by reallocating work from highly loaded processors to lightly loaded processors leading to a reduction in the overall computational time. In dynamic load balancing, workloads are adjusted continually or periodically throughout the computation. In this thesis load balancing strategies were evaluated and some load balancing policies developed. A load index and a profitability determination algorithms were developed. These were used to enhance two load balancing algorithms. One of the algorithms exhibits local communications and distributed load evaluation between the neighbour partitions (diffusion algorithm) and the other algorithm exhibits both local and global communications while the decision making is centralized (MaS algorithm). The enhanced algorithms were implemented and synthesized with a research parallel traffic simulation. The performance of the research parallel traffic simulator, optimized with the two modified dynamic load balancing strategies were studied.
Zooming in to Massive Star Birth
Creators: name: Kong, Shuo
name: Tan, Jonathan C.
name: Caselli, Paola
name: Fontani, Francesco
name: Wang, Ke
name: Butler, Michael J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present high resolution (0.2", 1000 AU) 1.3 mm ALMA observations of massive infrared dark cloud clump, G028.37+00.07-C1, thought to harbor the early stages of massive star formation. Using $\rm N_2D^+$(3-2) we resolve the previously identified C1-S core, separating the bulk of its emission from two nearby protostellar sources. C1-S is thus identified as a massive ($\sim50\:M_\odot$), compact ($\sim0.1\:$pc diameter) starless core, e.g., with no signs of outflow activity. Being highly deuterated, this is a promising candidate for a pre-stellar core on the verge of collapse. An analysis of its dynamical state indicates a sub-virial velocity dispersion compared to a trans-Alfvénic turbulent core model. However, virial equilibrium could be achieved with sub-Alfvénic conditions involving $\sim2\:$mG magnetic field strengths.
description: 19 pages, 15 figures, 4 tables, accepted by ApJ
General Galilei Covariant Gaussian Maps
Creators: name: Gasbarri, Giulio
name: Toroš, Marko
name: Bassi, Angelo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We characterize general non-Markovian Gaussian maps which are covariant under Galilean transformations. In particular, we characterize translational and Galilean covariant maps and show that they reduce to the known Holevo result in the Markovian limit. We apply the results to discuss measures of macroscopicity based on classicalization maps, specifically addressing dissipation, Galilean covariance and non-Markovianity. We further suggest a possible generalization of the macroscopicity measure defined in Nimmrichter and Hornbergerl. [Phys. Rev. Lett. 110, 16 (2013)].
description: 9 pages
The enabling environment for artisanal dimension stone in Nairobi, Kenya
Creators: name: K'Akumu, Owiti
Publisher: name: University of Westminster
Year: 2010

description: This study considered the enabling environment of artisanal dimension stone (i.e. blocks cut and shaped from natural rock using hand tools) for building in Nairobi, Kenya. It relied on the sociotechnical system theory to capture the forces (variables) that influence the business/enabling environment of the building material. The socio-technical perspective was necessary because hitherto existing literature had only considered the archi-technical, patho-technical, geotechnical, archaeo-technical and eco-technical perspectives. The study sought to explore the organizational structure of the construction industry in Kenya and profile the internal structure and the external environment of artisanal dimension stone producing units so as to identify and ascertain the socio-technical forces (variables) influencing the production and use of the stone. The study further sought to analyse the interrelationships among the identified forces in order to suggest adjustments to the enabling environment. The study applied PEST analysis techniques (including stakeholder and factor analyses) to characterise the enabling environment. The research took place in two main stages: exploratory and conclusive. The exploratory study involved the use of ethnographical methods (unstructured interviews and participant observation), analysis of secondary data and literature review so as to come up with theoretical propositions that further were tested conclusively through quantitative research using factor analysis. Data for factor analysis were obtained through structured interview conducted among relevant stakeholders of the building industry (i.e. stone producers, architects, quantity surveyors, contractors, and structural engineers) operating in Nairobi. The outputs of the study include: a profile of the business of the construction industry in Nairobi (Chapter 5), a profile of the internal structure and the external environment of artisanal stone producing units (Chapter 6) and a factor analytic model of the enabling environment of artisanal dimension stone (Chapter 7). Factor analysis that forms the conclusive part of the study has demonstrated that the enabling environment is relatively hostile. Further it has established the three levels of analysis proposed by Bertalanffy i.e. the number of system elements, the typology (variability) of system elements, and the interrelations among system elements. The study has also made certain policy recommendations in response to the hostile nature of the enabling environment: including the formation of an association by the producing unit, the formation of a marketing cooperative by the producing units and the cessation of blasting as a method of cutting rock.
Elliptic hypergeometric functions associated with root systems
Creators: name: Rosengren, Hjalmar
name: Warnaar, S. Ole
Publisher: name: arXiv
Year: 2017
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We give a survey of elliptic hypergeometric functions associated with root systems, comprised of three main parts. The first two form in essence an annotated table of the main evaluation and transformation formulas for elliptic hypergeometric integeral and series on root systems. The third and final part gives an introduction to Rains' elliptic Macdonald-Koornwinder theory (in part also developed by Coskun and Gustafson).
description: 28 pages. Modulo minor edits this paper will appear as a chapter in the book "Multivariable Special Functions" (edited by Tom Koornwinder and Jasper Stokman) which is part of the Askey-Bateman project. This version: essential correction of equation (1.2.14) and some further minor corrections
Strong convergence of a fully discrete finite element approximation of the stochastic Cahn-Hilliard equation
Creators: name: Furihata, Daisuke
name: Kovács, Mihály
name: Larsson, Stig
name: Lindgren, Fredrik
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 60H15, 60H35, 65C30

description: We consider the stochastic Cahn-Hilliard equation driven by additive Gaussian noise in a convex domain with polygonal boundary in dimension $d\le 3$. We discretize the equation using a standard finite element method in space and a fully implicit backward Euler method in time. By proving optimal error estimates on subsets of the probability space with arbitrarily large probability and uniform-in-time moment bounds we show that the numerical solution converges strongly to the solution as the discretization parameters tend to zero.
description: 25 pages
A patient-reported outcome measure for patients with pituitary adenoma undergoing transsphenoidal surgery.
Creators: name: Karvandi, Elika
name: Hanrahan, John Gerrard
name: Khan, Danyal Zaman
name: Boloux, Pierre-Marc
name: Bremner, Fion
name: Cabrilo, Ivan
name: Dorward, Neil
name: Grieve, Joan
name: Jackson, Sue
name: Jimenez, Glenda
name: Serrano, Inma
name: Nowak, Victoria Anne
name: Kolias, Angelos
name: Baldeweg, Stephanie E
name: Marcus, Hani Joseph
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Article
Pituitary adenoma
Patient-reported outcome measure
PROM
Transsphenoidal surgery
Quality of life
Pituitary surgery

description: PURPOSE: Pituitary adenomas affect patients' quality-of-life (QoL) across several domains, with long-term implications even following gross-total resection or disease remission. While clinical outcomes can assess treatment efficacy, they do not capture variations in QoL. We present the development and validation of a patient reported outcome measure (PROM) for patients with pituitary adenomas undergoing transsphenoidal surgery. METHODS: The COSMIN checklist informed the development of the pituitary outcome score (POS). Consecutive patients undergoing surgical treatment for suspected pituitary adenoma at a single centre were included prospectively. An expert focus group and patient interviews informed item generation. Item reduction was conducted through exploratory factor analysis and expert consensus, followed by assessment of the tool's validity, reliability, responsiveness, and interpretability. RESULTS: 96 patients with a median age of 50 years validated the POS. The final questionnaire included 25 questions with four subscales: EQ-5D-5L-QoL, Visual Symptoms, Endocrine Symptoms and Nasal Symptoms. CONCLUSION: The POS is the first validated PROM for patients undergoing transsphenoidal surgery for a pituitary adenoma. This PROM could be integrated into contemporary practice to provide patient-centred outcomes assessment for this patient group, aligning more closely with patient objectives.
Epistemic Insight Tutors in Higher Education
Creators: name: LASAR Centre
Publisher: name: Zenodo
Year: 2022
Subjects: Epistemic insight
Higher education
research-engaged teaching

description: The Epistemic Insight Initiative is a research and curriculum innovation project that’s being carried out in teacher education and higher education institutions. This document contains profiles of tutors at Canterbury Christ Church University who are teaching epistemic insight through their modules and workshops. Epistemic insight means ‘knowledge about knowledge’, and particularly knowledge about disciplines and how they interact. Teaching epistemic insight goes hand in hand with teaching a knowledge-rich, broad and balanced curriculum. The Epistemic Insight initiative provides opportunities for: • Tutors and trainee teachers to work collaboratively to co-create pedagogies fordeveloping pupils’ epistemic insight and agency in schools. • Creating Knowledge Labs in higher education, designed to build students’ epistemic insight through projects that engage with real world opportunities and problems. This facilitates links between different disciplinary knowledge domains to help students become innovative and critical epistemic agents, equipped to co-create holistic solutions to 21st Century challenges. To maximise the visibility and inclusivity of EI, the tools and language of epistemic insight are written into the module descriptions and assessments. Posters are displayed around lecture theatres and hand-outs are shared in and between sessions. Trainee teachers and higher education students are encouraged to become active researchers within both their academic studies and teaching practice. This online portal outlines current academic involvement and the activities, outcomes and innovations produced for the project.
Learning the Structure of Generative Models without Labeled Data
Creators: name: Bach, Stephen H.
name: He, Bryan
name: Ratner, Alexander
name: Ré, Christopher
Publisher: name: arXiv
Year: 2017
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Curating labeled training data has become the primary bottleneck in machine learning. Recent frameworks address this bottleneck with generative models to synthesize labels at scale from weak supervision sources. The generative model's dependency structure directly affects the quality of the estimated labels, but selecting a structure automatically without any labeled data is a distinct challenge. We propose a structure estimation method that maximizes the $\ell_1$-regularized marginal pseudolikelihood of the observed data. Our analysis shows that the amount of unlabeled data required to identify the true structure scales sublinearly in the number of possible dependencies for a broad class of models. Simulations show that our method is 100$\times$ faster than a maximum likelihood approach and selects $1/4$ as many extraneous dependencies. We also show that our method provides an average of 1.5 F1 points of improvement over existing, user-developed information extraction applications on real-world data such as PubMed journal abstracts.
Simplicity of Lyapunov spectrum for linear cocycles over non-uniformly hyperbolic systems
Creators: name: Backes, Lucas
name: Poletti, Mauricio
name: Varandas, Paulo
name: Lima, Yuri
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We prove that generic fiber-bunched and Hölder continuous linear cocycles over a non-uniformly hyperbolic system endowed with a u-Gibbs measure have simple Lyapunov spectrum. This gives an affirmative answer to a conjecture proposed by Viana in the context of fiber-bunched cocycles.
A Study of Degenerate Two-Body and Three-Body Coupled-Channel Systems -Renormalized Effective AGS Equations and Near-Threshold Resonances-
Creators: name: Konishi, Atsunari
name: Morimatsu, Osamu
name: Yasui, Shigehiro
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by the existence of candidates for exotic hadrons whose masses are close to both of two-body and three-body hadronic thresholds lying close to each other, we study degenerate two-body and three-body coupled-channel systems. We first formulate the scattering problem of non-degenerate two-body and three-body coupled-channels as an effective three-body problem, i.e.\ effective Alt-Grassberger-Sandhas (AGS) equations. We next investigate the behavior of $S$-matrix poles near the threshold when two-body and three-body thresholds are degenerate. We solve the eigenvalue equations of the kernel of AGS equations instead of AGS equations themselves to obtain the $S$-matrix pole energy. We then face a problem of unphysical singularity: though the physical transition amplitudes have physical singularities only, the kernel of AGS equations have unphysical singularities. We show, however, that these unphysical singularities can be removed by appropriate reorganization of the scattering equations and mass renormalization. The behavior of $S$-matrix poles near the degenerate threshold is found to be universal in the sense that the complex pole energy, $E$, is determined by a real parameter, $c$, as $c - E \log{\left( - E \right)} = 0$, or equivalently, ${\rm Im} E = - π{\rm Re} E / \log{\mid {\rm Re} E \mid}$. This behavior is different from that of either two-body or three-body system and is characteristic in the degenerate two-body and three-body coupled-channel system. We expect that this new class of universal behavior might play a key role in understanding exotic hadrons.
description: 26 pages, 12 figures
A Theory of Intermittency Differentiation of 1D Infinitely Divisible Multiplicative Chaos Measures
Creators: name: Ostrovsky, Dmitry
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60E07, 60G51, 60G57 (Primary), 28A80, 60G15 (Secondary)

description: A theory of intermittency differentiation is developed for a general class of 1D Infinitely Divisible Multiplicative Chaos measures. The intermittency invariance of the underlying infinitely divisible field is established and utilized to derive a Feynman-Kac equation for the distribution of the total mass of the limit measure by considering a stochastic flow in intermittency. The resulting equation prescribes the rule of intermittency differentiation for a general functional of the total mass and determines the distribution of the total mass and its dependence structure to the first order in intermittency. A class of non-local functionals of the limit measure extending the total mass is introduced and shown to be invariant under intermittency differentiation making the computation of the full high temperature expansion of the total mass distribution possible in principle. For application, positive integer moments and covariance structure of the total mass are considered in detail.
description: 38 pages
The public and the popular media in China
Creators: name: Lee, Hsiao-Wen
Publisher: name: University of Westminster
Year: 2010

description: The focus of this research is whether the Habermas’ ‘bourgeois public sphere’, which is characteristic of Western society, can be extended to China. My main contribution is to demonstrate that the concepts of ‘sentiment’ and ‘reason’ are central to any discussion of the public sphere in China. This is in sharp contrast to the West where rational discussion and the rule of law are the twin foundations of the classical discourse of the public sphere. China’s society is distinct from Western democracies the West in at least two fundamental ways. In the first place, the political system remains ‘communist’ with a single party controlling all of the media. As a result, the degree of freedom of thought and speech is extremely limited, and there is no obvious way in which the mass media can act directly as a forum for free and informed discussion of public policy. Secondly, whereas the rule of law is understood as a central element in Western democratic culture, it has a subordinate place in Chinese culture. These assumptions are examined through a study of the readership of the Popular Press and through text analysis. How the Popular Press engages with the general public, how the general public reads and judges media messages, and crucially whether the Popular Press could employ an indirect approach working to constitute an ‘imaginary’ public in China were the discoveries. In the end, this study concludes that while China’s cultural, political and economic system of control is the main factor leading to the restriction and dissent of the general public, a ‘reasoning’ popular public might, in time, be shaped through their reading of controversies in political and public affairs in the Popular Press.
Hennings, Emmy: Zum neuen Buch von Siegfried Streicher.Streicher, Siegfried: Die Tragödie einer Gottessucherin. Margaretha von Wildensbuch. Verlag Benziger, Einsiedeln.; Vom Schwarmgeist der Erweckten. Streicher, Siegfried / Hennings, Emmy: Zum neuen Buch von Siegfried Streicher.Streicher, Siegfried: Die Tragödie einer Gottessucherin. (Fassung A)
Creators: name: Ball-Hennings, Emmy
Publisher: name: [s.n.]
Year: 2024

description: Dokument
The Emergence of Canalization and Evolvability in an Open-Ended, Interactive Evolutionary System
Creators: name: Huizinga, Joost
name: Stanley, Kenneth O.
name: Clune, Jeff
Publisher: name: arXiv
Year: 2017
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Natural evolution has produced a tremendous diversity of functional organisms. Many believe an essential component of this process was the evolution of evolvability, whereby evolution speeds up its ability to innovate by generating a more adaptive pool of offspring. One hypothesized mechanism for evolvability is developmental canalization, wherein certain dimensions of variation become more likely to be traversed and others are prevented from being explored (e.g. offspring tend to have similarly sized legs, and mutations affect the length of both legs, not each leg individually). While ubiquitous in nature, canalization almost never evolves in computational simulations of evolution. Not only does that deprive us of in silico models in which to study the evolution of evolvability, but it also raises the question of which conditions give rise to this form of evolvability. Answering this question would shed light on why such evolvability emerged naturally and could accelerate engineering efforts to harness evolution to solve important engineering challenges. In this paper we reveal a unique system in which canalization did emerge in computational evolution. We document that genomes entrench certain dimensions of variation that were frequently explored during their evolutionary history. The genetic representation of these organisms also evolved to be highly modular and hierarchical, and we show that these organizational properties correlate with increased fitness. Interestingly, the type of computational evolutionary experiment that produced this evolvability was very different from traditional digital evolution in that there was no objective, suggesting that open-ended, divergent evolutionary processes may be necessary for the evolution of evolvability.
description: SI can be found at: http://www.evolvingai.org/files/SI_0.zip
Community detection, link prediction, and layer interdependence in multilayer networks
Creators: name: De Bacco, Caterina
name: Power, Eleanor A.
name: Larremore, Daniel B.
name: Moore, Cristopher
Publisher: name: arXiv
Year: 2017
Subjects: subject: Social and Information Networks (cs.SI)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Complex systems are often characterized by distinct types of interactions between the same entities. These can be described as a multilayer network where each layer represents one type of interaction. These layers may be interdependent in complicated ways, revealing different kinds of structure in the network. In this work we present a generative model, and an efficient expectation-maximization algorithm, which allows us to perform inference tasks such as community detection and link prediction in this setting. Our model assumes overlapping communities that are common between the layers, while allowing these communities to affect each layer in a different way, including arbitrary mixtures of assortative, disassortative, or directed structure. It also gives us a mathematically principled way to define the interdependence between layers, by measuring how much information about one layer helps us predict links in another layer. In particular, this allows us to bundle layers together to compress redundant information, and identify small groups of layers which suffice to predict the remaining layers accurately. We illustrate these findings by analyzing synthetic data and two real multilayer networks, one representing social support relationships among villagers in South India and the other representing shared genetic substrings material between genes of the malaria parasite.
$ψ(2S)$ enhancement in p-Pb collision as an indication of QGP formation at the LHC
Creators: name: Ganesh, S.
name: Singh, Captain R.
name: Mishra, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Proton-nucleus collisions serve as an important baseline for the understanding and interpretation of the nucleus-nucleus collisions. These collisions have been employed to characterize the cold nuclear matter effects at SPS and RHIC energies for the past several years, as it was thought that Quark-Gluon Plasma (QGP) is not formed in such collisions. However, at the Large Hadron Collider (LHC), there seems a possibility that QGP is formed during proton-lead (p$-$Pb) collisions. In this work, we have derived an expression for gluon induced excitation of $J/ψ$ to $ψ(2S)$, using pNRQCD, and show that the relative enhancement of $ψ(2S)$ vis a vis $J/ψ$, especially at high $p_T$, gives further indication that the QGP is indeed formed in p$-$Pb collisions at the most central collisions at LHC energy. $J/ψ$ and $ψ(2S)$ suppression effects seen at ALICE are also qualitatively explained.
description: 17 pages, 11 figures. Accepted for publication in Journal of Physics G
The boundary method for semi-discrete optimal transport partitions and Wasserstein distance computation
Creators: name: Dieci, Luca
name: Walsh, J. D.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 65K10, 35J96, 49M25

description: We introduce a new technique, which we call the boundary method, for solving semi-discrete optimal transport problems with a wide range of cost functions. The boundary method reduces the effective dimension of the problem, thus improving complexity. For cost functions equal to a p-norm with p in (1,infinity), we provide mathematical justification, convergence analysis, and algorithmic development. Our testing supports the boundary method with these p-norms, as well as other, more general cost functions.
description: 37 pages, 24 figures (including subfigures), 10 tables (including subtables)
Tagging new physics with charm
Creators: name: Iwamoto, Sho
name: Lee, Gabriel
name: Shadmi, Yael
name: Weiss, Yaniv
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We propose a new variable, the charm fraction, for collider searches for new physics. We analyze this variable in the context of searches for simplified supersymmetry models with squarks, the gluino, and the bino, assuming that only the lightest mass-degenerate squarks can be produced at the high-luminosity LHC. The charm fraction complements event counting and kinematic information, increasing the sensitivity of the searches for models with heavy gluinos, for which squark production is flavor-blind. If squarks are discovered at the LHC, this variable can help discriminate between different underlying models. In particular, with improved charm tagging, the charm fraction can provide information on the gluino mass, and in some scenarios, on whether this mass is within the reach of a future 100 TeV hadron collider.
description: 16 pages, 9 figures; double-tagging analysis added; discussion of results expanded; version to appear in JHEP
Subspace dynamic mode decomposition for stochastic Koopman analysis
Creators: name: Takeishi, Naoya
name: Kawahara, Yoshinobu
name: Yairi, Takehisa
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The analysis of nonlinear dynamical systems based on the Koopman operator is attracting attention in various applications. Dynamic mode decomposition (DMD) is a data-driven algorithm for Koopman spectral analysis, and several variants with a wide range of applications have been proposed. However, popular implementations of DMD suffer from observation noise on random dynamical systems and generate an inaccurate estimation of the spectra of the stochastic Koopman operator. In this paper, we propose subspace DMD as an algorithm for the Koopman analysis of random dynamical systems with observation noise. Subspace DMD first computes the orthogonal projection of future snapshots to the space of past snapshots and then estimates the spectra of a linear model, and its output converges to the spectra of the stochastic Koopman operator under standard assumptions. We investigate the empirical performance of subspace DMD with several dynamical systems and show its utility for the Koopman analysis of random dynamical systems.
description: 11 pages, 8 figures. fixed a typo in the main algorithm (Algorithm 2)
Hennings, Emmy: Aus Sagen und Märchenquellen. Erzählt von Emmy Ball-Hennings. Kapitel 1: König Salomos Zepter und die Krone der Königin von Saba, Titelblatt, Inhaltsverzeichnis
Creators: name: Ball-Hennings, Emmy
Publisher: name: [s.n.]
Year: 2024

description: Dokument
A game characterizing Baire class 1 functions
Creators: name: Kiss, Viktor
Publisher: name: arXiv
Year: 2017
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 26A21 (Primary) 03E15, 54H05 (Secondary)

description: Duparc introduced a two-player game for a function $f$ between zero-dimensional Polish spaces in which Player II has a winning strategy iff $f$ is of Baire class 1. We generalize this result by defining a game for an arbitrary function $f : X \to Y$ between arbitrary Polish spaces such that Player II has a winning strategy in this game iff $f$ is of Baire class 1. Using the strategy of Player II, we reprove a result concerning first return recoverable functions.