cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Real-space entanglement in the Cosmic Microwave Background
Creators: name: Martin, Jerome
name: Vennin, Vincent
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We compute the entanglement entropy, mutual information and quantum discord of the Cosmic Microwave Background (CMB) fluctuations in real space. To that end, we first show that measurements of these fluctuations at two distinct spatial locations can be described by a bipartite, continuous Gaussian system. This leads to explicit formulas for the mutual information and the quantum discord in terms of the Fourier-space power spectra of the curvature perturbation. We then find that quantum entanglement, that builds up in Fourier space between opposite wave momenta as an effect of quantum squeezing, is transferred to real space. In particular, both the mutual information and quantum discord, which decay as the fourth power of the distance between the two measurements in flat space time, asymptotes a constant in cosmological backgrounds. At the scales probed in the CMB however, they are highly suppressed, while they can reach order-one values at much smaller scales, where primordial black holes could have formed.
description: companion of arXiv:2106.14575, 37 pages without appendices (total 46 pages), 7 figures, typos corrected in equations (A.8), (A.10), (A.13), (A.15)
Transforming Ways of Knowing about Interprofessional Education: A Single Exploratory Case Study with Nursing Educators
Creators: name: George, Marian
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Education--Higher
subject: interprofessional education
subject: collaborative education
subject: teaching
subject: nursing practice

description: Teaching and learning in nursing are changing in response to increased complexity and societal issues in client care (CASN, 2010; Institute of Medicine, 2000). A call for innovation in nursing education is imminent and interprofessional education (IPE) may be the innovative teaching process needed to address a change in nursing education. Change is difficult in a traditional and bounded profession, such as nursing education. The purpose of this single exploratory case study was to explore how 15 nurse educators teaching in undergraduate nursing programs in Alberta, Canada understood and used IPE within nursing education. The intent was to identify the perspectives and meanings of IPE as seen through the knowledge lens of nurse educators, using the theoretical framework of social constructivism, underpinned by adult learning theory. Data collected from semi-structured interviews, field notes, and document review allowed interpretation of how the ways of knowing in nursing education guided the nurse educators to understand and use IPE. Transformative learning theory gave clarity to the meaning of the dissonance experienced by the nurse educators. The nurse educators’ exploration of ways of knowing evolved into new ways of knowing about IPE in nursing education. The findings gleaned from this exploratory case study may assist with ongoing development of healthcare policy and education programs.
Sympathetic Wigner function tomography of a dark trapped ion
Creators: name: Mirkhalaf, Safoura Sadat
name: Molmer, Klaus
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A protocol is provided to reconstruct the Wigner function for the motional state of a trapped ion via fluorescence detection on another ion in the same trap. This "sympathetic tomography" of a dark ion without optical transitions suitable for state measurements is based on the mapping of its motional state onto one of the collective modes of the ion pair. The quantum state of this vibrational eigenmode is subsequently measured through sideband excitation of the bright ion. Physical processes to implement the desired state transfer and read-out are derived, and the accomplishment of the scheme for different mass ratios is evaluated.
description: 8 pages, 5 figures
Working characteristics of the New Low-Background Laboratory (DULB-4900, Baksan Neutrino Observatory)
Creators: name: Gavriljuk, Ju. M.
name: Gangapshev, A. M.
name: Gezhaev, A. M.
name: Kazalov, V. V.
name: Kuzminov, V. V.
name: Panasenko, S. I.
name: Ratkevich, S. S.
name: Yakimenko, S. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A concise technical characteristic of a new low-background laboratory DULB-4900 of the BNO INR RAS is presented. The technique and the results of background measurements in the Hall, ordinary box and low-background box are presented. Rn-222 contamination in the laboratory air has been measured by direct detection of gamma-radiation of its daughter Bi-214 distributed over the volume of the low-background box. The results of the data analysis are presented.
description: 5 pages, 6 figures
Toward a Perspectivist Turn in Ground Truthing for Predictive Computing
Creators: name: Basile, Valerio
name: Cabitza, Federico
name: Campagner, Andrea
name: Fell, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Most Artificial Intelligence applications are based on supervised machine learning (ML), which ultimately grounds on manually annotated data. The annotation process is often performed in terms of a majority vote and this has been proved to be often problematic, as highlighted by recent studies on the evaluation of ML models. In this article we describe and advocate for a different paradigm, which we call data perspectivism, which moves away from traditional gold standard datasets, towards the adoption of methods that integrate the opinions and perspectives of the human subjects involved in the knowledge representation step of ML processes. Drawing on previous works which inspired our proposal we describe the potential of our proposal for not only the more subjective tasks (e.g. those related to human language) but also to tasks commonly understood as objective (e.g. medical decision making), and present the main advantages of adopting a perspectivist stance in ML, as well as possible disadvantages, and various ways in which such a stance can be implemented in practice. Finally, we share a set of recommendations and outline a research agenda to advance the perspectivist stance in ML.
description: If you wish to cite this work, consider citing the AAAI 2023 proceedings version (https://doi.org/10.1609/aaai.v37i6.25840) and citing it in this way: Cabitza, F., Campagner, A., & Basile, V. (2023). Toward a Perspectivist Turn in Ground Truthing for Predictive Computing. Proceedings of the AAAI Conference on Artificial Intelligence, 37(6), 6860-6868. https://doi.org/10.1609/aaai.v37i6.25840
Covariant formulation of refracted gravity
Creators: name: Sanna, Andrea Pierfrancesco
name: Matsakos, Titos
name: Diaferio, Antonaldo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a covariant formulation of refracted gravity (RG), a classical theory of gravity based on the introduction of gravitational permittivity (GP), a monotonic function of the local mass density, in the standard Poisson equation. GP mimics dark matter (DM) phenomenology. The covariant formulation of RG (CRG) that we propose belongs to the class of scalar-tensor theories, where the scalar field $φ$ has a self-interaction potential $V(φ)=-Ξφ$, with $Ξ$ a normalization constant. We show that $φ$ is twice the GP in the weak-field limit. Far from a spherical source of density $ρ_s(r)$, the transition between the Newtonian and the RG regime appears below the acceleration scale $a_Ξ=(2Ξ-8πGρ/φ)^{1/2}$, with $ρ=ρ_s+ρ_{bg}$, $ρ_{bg}$ being an isotropic and homogeneous background. In the limit $2Ξ\gg 8πGρ/φ$, we obtain $a_Ξ\sim 10^{-10}$~m~s$^{-2}$. This is comparable to the acceleration $a_0$ originally introduced in MOND. From CRG, we also derived the modified Friedmann equations for an expanding, homogeneous, and isotropic universe. We find that the same scalar field that mimics DM also drives the accelerated expansion of the Universe. From the stress-energy tensor of $φ$, we derived the equation of state of a redshift-dependent effective dark energy (DE) $w_{DE}=p_{DE}/ρ_{DE}$. Current observational constraints on $w_{DE}$ and distance modulus data of SNIa suggest that $Ξ$ has a comparable value to the cosmological constant $Λ$ in the standard model. CRG, therefore, suggests a natural explanation of the known relation $a_0\sim Λ^{1/2}$ and appears to describe both the dynamics of cosmic structure and the expanding Universe with a single scalar field, highlighting a possible deep connection between phenomena currently attributed to DM and DE separately.
description: 16 pages, 6 appendices, 3 figures, matches the accepted version in A&A
Qualifying the Variability of Surface Topography Indices for Detection of Clinical Progression of Scoliosis
Creators: name: Dubetz, Tyler Paul Arthur
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Medicine and Surgery
subject: Engineering--Biomedical
subject: Engineering--Mechanical
subject: scoliosis
subject: Surface Topography
subject: medical imaging
subject: Measurement error

description: Surface topography (ST) measurements of scoliotic deformities offer the potential to reduce radiation and to provide a more complete description of the deformity when compared to standard X-rays. These ST measurements must be evaluated within a clinical context to determine their feasibility for clinical and research applications. This study quantifies the variability in a set of developed ST indices and estimates a magnitude of clinically important difference based on current clinical standards. The variability is compared to the clinically important difference to determine if the system is adequate for clinical implementation (individual evaluation) or research implementation (group-to-group comparisons). Nine of ten ST indices were found acceptable for typical research implementation. One of ten ST indices (aspect ratio) was found acceptable for typical clinical implementation. Aspect ratio also shows a trend towards differentiating between progressed and non-progressed scoliosis. However, the estimation of what constitutes clinically important difference should be examined further.
Modified dispersion relations and a potential explanation of the EDGES anomaly
Creators: name: Das, Saurya
name: Fridman, Mitja
name: Lambiase, Gaetano
name: Stabile, Antonio
name: Vagenas, Elias C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Experiment to Detect the Global Epoch of Reionisation Signature (EDGES) collaboration has recently reported an important result related to the absorption signal in the Cosmic Microwave Background radiation spectrum. This signal corresponds to the red-shifted 21-cm line at $z \simeq 17.2$, whose amplitude is about twice the expected value. This represents a deviation of approximately $3.8σ$ from the predictions of the standard model of cosmology, i.e. the $Λ$CDM model. This opens a window for testing new physics beyond both the standard model of particle physics and the $Λ$CDM model. In this work, we explore the possibility of explaining the EDGES anomaly in terms of modified dispersion relations. The latter are typically induced in unified theories and theories of quantum gravity, such as String/M-theories and Loop Quantum Gravity. These modified dispersion relations affect the density of states per unit volume and thus the thermal spectrum of the Cosmic Microwave Background photons. The temperature of the 21-cm brightness temperature is modified accordingly giving a potential explanation of the EDGES anomaly.
description: 11 pages, 8 figures
Emerging Directions in Geophysical Inversion
Creators: name: Valentine, Andrew
name: Sambridge, Malcolm
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geophysics (physics.geo-ph)
subject: Optimization and Control (math.OC)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In this chapter, we survey some recent developments in the field of geophysical inversion. We aim to provide an accessible general introduction to the breadth of current research, rather than focussing in depth on particular topics. In particular, we hope to give the reader an appreciation for the similarities and connections between different approaches, and their relative strengths and weaknesses.
description: 32 pages, 2 figures. Original manuscript submitted for review as a chapter of "Data Assimilation and Inverse Problems in Geophysical Sciences", eds. Alik Ismail-Zadeh, Fabio Castelli, Dylan Jones and Sabrina Sanchez
Additional file 1 of Molecular detection of blaCTX-M gene to predict phenotypic cephalosporin resistance and clinical outcome of Escherichia coli bloodstream infections in Vietnam
Creators: name: Son, Trinh Van
name: Manh, Nguyen Dang
name: Trung, Ngo Tat
name: Quyen, Dao Thanh
name: Meyer, Christian G.
name: Phuong, Nguyen Thi Kim
name: Hoan, Phan Quoc
name: Sang, Vu Viet
name: Nurjadi, Dennis
name: Velavan, Thirumalaisamy P.
name: Bang, Mai Hong
name: Song, Le Huu
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 1: Table S1. Primer sequences used for screening of beta-lactamase encoding genes. Table S2. Duration of hospital stay of patients with BSIs caused by cephalosporin susceptible E. coli. Figure S1: Agarose gel electrophoresis of blaCTX-M (739 bp), blaCTX-M (590 bp), blaTEM (422 bp) genes; M50 Marker (50–1000 bp); (–) negative control; (+) positive control. Samples 1,2,3,5,6,9,13 are positive for blaTEM and blaCTX-M; samples 4,11,12 are positive for blaCTX-M; samples 7 and 10 are negative for all (blaSHV, blaCTX-M and blaTEM)
Towards ecosystem-based management : integrating stakeholder values in decision-making and improving the representation of ecosystems in ecosystem models
Creators: name: Espinosa Romero, Maria Jose
Publisher: name: University of British Columbia
Year: 2010

description: Ecosystem-based management (EBM) is increasingly seen as the new paradigm for managing the use of marine resources and ecosystems. Although EBM has been defined in theory, its implementation has faced challenges worldwide. This research aims to examine two approaches to contribute to the operationzalization of EBM by incorporating stakeholder values in the decision-making process, and by better representing ecosystem dynamics in ecosystem models. First, I illustrate a decision-making framework for EBM rooted in structured decision-making (SDM), a well-known systematic approach for planning and stakeholder-consultation processes. SDM helps to identify the values of the constituents and define objectives and indicators that are consistent with those values. I demonstrate how SDM can enable managers to evaluate the performance of management alternatives using indicators specifically chosen to reflect values. This can help managers make more systematic, transparent and informed decisions with respect to the use of marine resources. As a case study, I apply SDM to the marine planning process on the west coast of Vancouver Island (WCVI). Second, as ecosystem models play an important role in EBM, I strive to improve the representation of marine ecosystems using ecosystem models in Ecopath with Ecosim (EwE). I focus on incorporating mediating effects and species reintroductions, both common situations that can strongly influence ecosystem dynamics. These considerations are essential when applying holistic approaches to management but they are not generally included in EwE. I use EwE to model the reintroduction of sea otters (Enhydra lutris) and the mediating effects provided by kelp forests in nearshore ecosystems of the WCVI. Because EwE does not have the functionality to represent reintroductions, I created two scenarios to work around the assumptions of Ecospace on the initial state of the ecosystem. In addition, I demonstrate how mediating effects can be represented using the ‘mediation’ function in Ecosim. These methods and results can contribute to advance EBM on the WCVI and offer insights to other marine planning processes. Both strengths and limitations of this work are presented and analyzed.
Warped Dynamic Linear Models for Time Series of Counts
Creators: name: King, Brian
name: Kowal, Daniel R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: Computation (stat.CO)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Dynamic Linear Models (DLMs) are commonly employed for time series analysis due to their versatile structure, simple recursive updating, ability to handle missing data, and probabilistic forecasting. However, the options for count time series are limited: Gaussian DLMs require continuous data, while Poisson-based alternatives often lack sufficient modeling flexibility. We introduce a novel semiparametric methodology for count time series by warping a Gaussian DLM. The warping function has two components: a (nonparametric) transformation operator that provides distributional flexibility and a rounding operator that ensures the correct support for the discrete data-generating process. We develop conjugate inference for the warped DLM, which enables analytic and recursive updates for the state space filtering and smoothing distributions. We leverage these results to produce customized and efficient algorithms for inference and forecasting, including Monte Carlo simulation for offline analysis and an optimal particle filter for online inference. This framework unifies and extends a variety of discrete time series models and is valid for natural counts, rounded values, and multivariate observations. Simulation studies illustrate the excellent forecasting capabilities of the warped DLM. The proposed approach is applied to a multivariate time series of daily overdose counts and demonstrates both modeling and computational successes.
Relaxin's Potential Implications in Early Pregnancy in Mares
Creators: name: Schwinghamer, Rose Anna-Marie
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Veterinary Science
subject: Relaxin
subject: Maternal Recognition of Pregnancy
subject: Equine
subject: Prostaglandin F2α
subject: Progesterone
subject: Conceptus
subject: Mare
subject: Pregnancy

description: Relaxin is expressed at high levels from the conceptus during the first 16 d of pregnancy in mares. The overall objective was to determine the potential implications of relaxin in equine endometrium, and the expression of RLN, RXFP1, RXFP2, RXFP3 and RXFP4 in pregnant and non-pregnant equine endometrium as well as in the conceptus. The location of RXFP1 in pregnant endometrium was examined and effects of relaxin on inhibition of PGF2α were detailed. The hypothesis that relaxin inhibits endometrial release of PGF2α and is the maternal recognition of pregnancy factor in mares was tested. This hypothesis was rejected with the conclusion that whereas relaxin is important in equine pregnancy, it is not the maternal recognition of pregnancy factor.
Principles of Solomonoff Induction and AIXI
Creators: name: Sunehag, Peter
name: Hutter, Marcus
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: We identify principles characterizing Solomonoff Induction by demands on an agent's external behaviour. Key concepts are rationality, computability, indifference and time consistency. Furthermore, we discuss extensions to the full AI case to derive AIXI.
description: 14 LaTeX pages
Could a foliation by constant mean curvature hypersurfaces cover the existence of most observers in our part of spacetime?
Creators: name: Martin-Moruno, Prado
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a foliation by constant mean curvature hypersurfaces of a de Sitter space with a thin-wall Coleman-De Luccia bubble of de Sitter space inside, which covers the existence of most observers in our part of spacetime if we are placed in the region outside the bubble.
description: 4 pages, 1 figure, to appear in Proceedings of Spanish Relativity Meeting 2011 (ERE 2011) held in Madrid, Spain
Stability and Accuracy of Lattice Boltzmann Method
Creators: name: Bawazeer, Saleh
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Energy
subject: Mechanical
subject: Lattice
subject: Boltzmann
subject: Stability
subject: MRT
subject: LBM

description: The advection di usion and Navier Stokes equation can be recovered from Lattice Boltzmann equation. The stability and accuracy analysis need to be performed to ensure that those equations are recovered correctly. The Lattice Boltzmann stability analysis is still an open research area. The von Neumann stability is used to investigate the maximum stable velocity of multi-relaxation time (MRT) model as a function of relaxation parameters for di erent lattice models. The maximum stable velocity is the maximum velocity that keep the error bounded. The accuracy of each lattice model is investigated as a function of velocity and number of mesh points. It is noted that the maximum velocity calculated from stability analysis becomes signi cant when the relaxation parameter is approaching 2 (zero viscosity), while the maximum velocity that ensures the accuracy becomes signi cant when the relaxation parameter is away from 2.
Top-BESS model and its phenomenology
Creators: name: Gintner, Mikulas
name: Juran, Josef
name: Melo, Ivan
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce the top-BESS model which is the effective description of the strong electroweak symmetry breaking with a single new SU(2)_L+R triplet vector resonance. The model is a modification of the BESS model in the fermion sector. The triplet couples to the third generation of quarks only. This approach reflects a possible extraordinary role of the top quark in the mechanism of electroweak symmetry breaking. The low-energy limits on the model parameters found provide hope for finding sizable signals in the LHC Drell-Yan processes as well as in the s-channel production processes at the ILC. However, there are regions of the model parameter space where the interplay of the direct and indirect fermion couplings can hide the resonance peak in a scattering process even though the resonance exists and couples directly to top and bottom quarks.
description: published in Physical Review D, minor changes in text, 21 pages, 37 figures
Agglomeration triggered by the effect of the number of regions: A model in NEG with a quadratic subutility
Creators: name: Ohtake, Kensuke
Publisher: name: arXiv
Year: 2021
Subjects: subject: Theoretical Economics (econ.TH)
subject: Dynamical Systems (math.DS)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: We extend the mathematical model proposed by Ottaviano-Tabuchi-Thisse (2002) to a multi-regional case and investigate the stability of the homogeneous stationary solution of the model in a one-dimensional periodic space. When the number of regions is two and three, the homogeneous stationary solution is stable under sufficiently high transport cost. On the other hand, when the number of regions is a multiple of four, the homogeneous stationary solution is unstable under any values of the transport cost.
Parrondo games with spatial dependence and a related spin system, II
Creators: name: Ethier, S. N.
name: Lee, Jiyeon
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35 (Primary) 60J20 (Secondary)

description: Let game B be Toral's cooperative Parrondo game with (one-dimensional) spatial dependence, parameterized by N (3 or more) and p_0,p_1,p_2,p_3 in [0,1], and let game A be the special case p_0=p_1=p_2=p_3=1/2. Let mu_B (resp., mu_(1/2,1/2)) denote the mean profit per turn to the ensemble of N players always playing game B (resp., always playing the randomly mixed game (1/2)(A+B)). In previous work we showed that, under certain conditions, both sequences converge and the limits can be expressed in terms of a parameterized spin system on the one-dimensional integer lattice. Of course one can get similar results for mu_(gamma,1-gamma) corresponding to gamma A+(1-gamma)B for 0
description: 24 pages, 0 figures
Transmission-Constrained Consensus of Multiagent Networks
Creators: name: Wang, Xiaotian
name: Su, Housheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper studies the consensus problem for multiagent systems with transmission constraints. A novel model of multiagent systems is proposed where the information transmissions between agents are disturbed by irregular distortions or interferences (named transmission constraint functions), and this model is universal which can be applied in many cases, such as interval consensus and discarded consensus. In the transmission-constrained consensus problem, we obtain the necessary and sufficient condition that agents can converge to state consensus. Furthermore, a more general case is studied in which the system reaches an equilibrium. Based on some techniques of algebraic topology and stability theory, the existence, uniqueness and stability of the system equilibrium point can be proven, which means the system can reach an asymptotically stable equilibrium. Moreover, the state values of the equilibrium are only decided by the network structure and transmission constraint functions, but not the agents' initial states. Finally, numerical simulations are presented to illustrate the proposed theorems and corollaries.
Effect of a Gaussian random external magnetic field with spatio temporal variation on compensation in Ising spin-1/2 trilayered square ferrimagnets
Creators: name: Chandra, Soham
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work, an extensive Metropolis Monte Carlo simulation is performed to investigate the steady-state magnetic and thermodynamic behaviour of a trilayered spin-1/2 Ising ferrimagnet with square monolayers, driven by external Gaussian random magnetic field with certain spatio-temporal variations. Such thin ferrimagnetic systems exhibit compensation phenomenon and thus are potentially interesting candidates for several technological applications. Here, two distinct theoretical atoms, A and B, make up the ABA and AAB types of configurations in which the like atoms (A-A and B-B) ferromagnetically interact and the unlike atoms (A-B) interact antiferromagnetically. Depending upon the strength of the spatio-temporally varying Gaussian random field, the compensation and critical points shift and steady-state magnetic behaviours change between the different distinct types of ferrimagnetic behaviours. The compensation phenomenon even vanishes after crossing a finite threshold of the standard deviation of the magnetic field for particular choices of the other controlling parameters. Consequently, in the Hamiltonian parameter space of both configurations, islands of ferrimagnetic phase without compensation appear within the phase area with compensation of field-free case. The areas of such islands grow with an increasing standard deviation of the external field, $σ$, obeying the scaling relation: $f(σ, A(σ))=σ^{-b}A(σ)$ with $b_{ABA}=1.913\pm 0.137$ and $b_{AAB}=1.625\pm 0.066$ . These values of exponents match within the statistical interval with those obtained with the uniform random magnetic field.
description: 19 pages, 15 Coloured Figures, Regular Article; Comments are welcome via e-mail
Collective Action and Sharing Space Across Difference: A Participatory Case Study at the Old Y Building
Creators: name: Edworthy, Son
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Geography
subject: Geography
subject: Participatory
subject: Community
subject: Difference
subject: Networks

description: In the context of increasing global tension, racialized violence and Islamaphobia, with significant local impacts, one of the most important questions humans face is how to share space across difference? Linking network theory with frameworks of equity and access, this participatory case study explores spatialities of network formation across socially constructed difference. The study nested a Participatory Action Research process in a case study of a nonprofit centre known as the Old Y building, which houses over 70 diverse nonprofit organizations. Through the participatory process of the research, involving iterative cycles of action and reflection, co-researchers recognized socio-spatial patterns of exclusion from networks, and generated ideas for practical solutions. Results of this research contribute to both academic and community-based practice, providing insights into how space can facilitate connections across difference, and could lead to more equitable access to resources and decision-making.
The inverted curvilinear effects of business relationships on institutional success: the moderating role of global role complexity
Creators: name: Sharma, Revti Raman
name: Raskovic, Matevz
name: Singh, Balwinder
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: Uncategorized

description: PurposeContrary to the widely held belief in the linear positive effects of business relationships (BRELs) on performance outcomes, the authors posit that the quality of a manager's BRELs with a foreign business partner has an inverted curvilinear effect on managing challenges arising out of institutional differences between two countries, which the authors define as institutional success. The authors further propose that managers' global role complexity (GRC) negatively impacts institutional success and dampens the inverted curvilinear effects of BRELs on institutional success.Design/methodology/approachThe proposed model is tested using questionnaire survey data from 186 senior Indian managers doing business with New Zealand.FindingsThe authors find significant support for the inverted curvilinear effects of BRELs and the negative effects of GRC on institutional success. They did not find significant results for the moderating role of GRC on the inverted curvilinear relationship between BRELs and institutional success. However, significant linear interactive effects of GRC and BREL are evident.Practical implicationsThe key managerial implication is that managers should focus on building BRELs of appropriate quality with their overseas counterparts to keep producing relational rents. They should, however, also be sensitive to when such relational rents start to be eroded by internal and external factors and treat them as a dynamic equilibrium rather than a static one.Originality/valueThe study findings challenge the assumption of linear positive effects of BRELs within the relational view. They highlight the significance of BRELs, even for emerging economy managers doing business in advanced economies.
Depolarization remote sensing by orthogonality breaking
Creators: name: Fade, Julien
name: Alouini, Mehdi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A new concept devoted to sensing the depolarization strength of materials from a single measurement is proposed and successfully validated on a variety of samples. It relies on the measurement of the orthogonality breaking between two orthogonal states of polarization after interaction with the material to be characterized. The two fields orthogonality being preserved after propagation in birefringent media, this concept is shown to be perfectly suited to depolarization remote sensing through fibers, opening the way to real time depolarization endoscopy.
description: 5 pages, 4 figures
Drinking coffee at the workplace
Creators: name: Wegener, Charlotte
name: Meier, Ninna
name: Ingerslev, Karen
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2015

description: Work and leisure are commonly viewed as two distinct activities. The blurred and dynamic boundaries between work and leisure are present in many peoples’ everyday life, as well as in studies of boundaryless work and work-life balance. In this paper we examine the problems of rigid categorizations. Studying breaks at work may provide important information about human behaviour and organizational life, information we may partly overlook if we categorize them simply as non-work. Categories are part of the research processes, but we can experiment with categories and even create new ones, to add nuances and new perspectives to our studies.
description: Akademisk kvarter | Academic Quarter, Fritid | Leisure, Vol. 11
Cosmological Model of Interacting Tachyon Field
Creators: name: Shchigolev, V. K.
name: Rotova, M. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we investigate a tachyon field model in cosmology, provided its interaction with the quintessence or phantom fields.The model takes into account this interaction beyond the usual approach, in which the interaction is phenomenologically described by the energy flow between the matter components. In our model, the interaction of tachyon field with a canonical scalar field is taken into account through the interaction potential in the total Lagrangian of the system, like in the case of two or more canonical scalar fields. We obtain the different types of exact solution for the model by employing the so-called "first order formalism" procedures.
description: 9 pages, 2 figures
title: A Performance Analysis of Cloud Folk for Percussion Octet and Piano by John Psathas
Creators: name: Vilseck, James
Publisher: name: University of Kentucky Libraries
Year: 2020
Subjects: subject: FOS: Arts (arts, history of arts, performing arts, music)

description: John Psathas is the one of the most forefront, living New Zealand composers and is considered to be one of the three most important living composers of the Greek Diaspora. His music is performed across the globe, most notably as the opening and closing ceremony music for the 2004 Olympic Games in Athens, Greece. His percussion music has been championed by percussionists for three decades, starting with Dame Evelyn Glennie with the work Matre’s Dance. Psathas still receives regular commissions for percussion instruments, having released multiple works in the last few years and multiple works still to be premiered.

The purpose of this dissertation is to explore the percussion works of John Psathas and its place in modern percussion literature, understand Psathas’s compositional style, and provide insights to performing his works. Interviews with individuals who have worked with Psathas and his music, as well as interviews with the composer himself provide an in-depth look at these works. Taking that knowledge, the dissertation provides an in-depth analysis into the theory and performance practice of Cloud Folk (2017), including harmony, setup, ensemble balance, instrument consideration, style, rehearsal markers, and specific performance considerations for each section.
description: © 2020 James Vilseck
The Decolonizing Potential of Local and Metropolitan Literature of the Rwandan Genocide
Creators: name: O'Neill, Kate
Publisher: name: Graduate Studies
Year: 2012
Subjects: subject: Literature--English
subject: Ethnic and Racial Studies
subject: Literature
subject: Rwandan Genocide
subject: Decolonization

description: Rwanda has been well-defined on the international stage. However, international understandings of the genocide do not sufficiently represent the perspectives of Rwandan citizens. The popular construction of Rwanda as a nation over the past eighteen years has used the Rwandan Genocide as a defining feature of Rwandan national identity. Governed by colonial rule from 1884-1962, Rwanda continues to be defined by neocolonial forces. In response to this problematic reality, literary representations of the genocide are beginning to provide a forum for Rwandan voices to assert authority over the cultivation of Rwandan identity for Western citizens. This dissertation considers seven diverse literary texts about the Rwandan Genocide which attempt to bridge the socio-political distance between Rwandan and Western citizens. Philip Gourevitch’s We Wish to Inform You That Tomorrow We Will Be Killed with Our Families and Gil Courtemanche’s A Sunday at the Pool in Kigali offer a detailed consideration of Rwandan history and culture to challenge the colonial rhetoric used to explain the genocide to Western citizens. Élisabeth Combres’ Broken Memory, Jean-Philippe Stassen’s Deogratias, and Tierno Monénembo’s The Oldest Orphan explore the lived experience of genocide and the impact of violence on individuals and communities, affectively conveying the complexity of genocidal suffering in order to escape the media binary of victims and perpetrators. Véronique Tadjo’s The Shadow of Imana and Sonja Linden’s play I Have Before Me a Remarkable Document Given to Me by a Young Lady from Rwanda demonstrate the significant post-genocide recovery achieved within Rwanda, and consider the value of cross-cultural interaction in further affirming this recovery. This study draws on the insights of postcolonial theory, trauma theory, and scholarship in the area of national identity to parse the role of these texts in recovering a productive sense of Rwandan identity for Western readers. This dissertation argues that these texts provide Western citizens with an understanding of national Rwandan identity that allows critical recognition of the superstructure of Western neocolonialism. As such, these narratives have the potential to enable Western citizens to recognize and challenge the role of the superstructure in shaping public discourse about the Rwandan Genocide.
MIRADA DIVINA. CINE DOCUMENTAL COMO HERRAMIENTA PARA EL ESTUDIO DEL LAND ART..pdf
Creators: name: Nuñez, Axel
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 460101
subject: Applications in arts and humanities

description: Esta tesis explora el cine documental como herramienta para analizar procesos creativos en Land Art, centrándose en la obra 'Wi Kili: Wá Shayii' del artista Juan Hernández en Mexicali, Baja California. Incluye metodologías de registro etnográfico y análisis fílmico.
Working out who you are
Creators: name: Jørgensen, Tina
name: Therkelsen, Anette
Publisher: name: Akademisk kvarter | Academic Quarter
Year: 2015

description: For several years, fitness has been a popular form of leisure activity due to people’s concern for their health and for displaying a healthy image. Recently, fitness activities have also started to permeate holidays. With point of departure in theories on consumption and identity and the increasing dedifferentiation of holiday activities, this study shows that fitness tourists use holidays mainly as an extension of their everyday lives. Certain differences between every-day and holiday consumption, however, also appear, as experimenting with new fitness activities as well as bonding with friends and getting acquainted with strangers appear to be defining aspects of fitness tourism. This underscores the usefulness of understanding identity formation in a fitness tourism context within a continuum of differentiation-dedifferentiation.
description: Akademisk kvarter | Academic Quarter, Fritid | Leisure, Vol. 11
Constraints on the Optical-IR extragalactic background from gamma-ray absorption studies
Creators: name: Costamante, Luigi
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Very high energy (VHE) gamma-rays from extragalactic sources, interacting by gamma-gamma collisions with diffuse intergalactic radiation fields, provide an alternative way to constrain the diffuse background light, completely independent of direct measurements. The limits depend however on our knowledge of the physics of the gamma-ray sources. After clarifying the interplay between background light and VHE spectra, I summarize the extent and validity of the obtainable limits, and where future improvements can be expected.
description: 8 pages, 8 figures. To appear in Proceedings of IAU Symposium No. 284, The Spectral Energy Distribution of Galaxies (SED2011), Preston, UK, 5-9 sep. 2011 (corrected typos and updated affiliations)
Did AI get more negative recently?
Creators: name: Beese, Dominik
name: Altunbaş, Begüm
name: Güzeler, Görkem
name: Eger, Steffen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: In this paper, we classify scientific articles in the domain of natural language processing (NLP) and machine learning (ML), as core subfields of artificial intelligence (AI), into whether (i) they extend the current state-of-the-art by the introduction of novel techniques which beat existing models or whether (ii) they mainly criticize the existing state-of-the-art, i.e. that it is deficient with respect to some property (e.g. wrong evaluation, wrong datasets, misleading task specification). We refer to contributions under (i) as having a 'positive stance' and contributions under (ii) as having a 'negative stance' (to related work). We annotate over 1.5 k papers from NLP and ML to train a SciBERT-based model to automatically predict the stance of a paper based on its title and abstract. We then analyse large-scale trends on over 41 k papers from the last approximately 35 years in NLP and ML, finding that papers have become substantially more positive over time, but negative papers also got more negative and we observe considerably more negative papers in recent years. Negative papers are also more influential in terms of citations they receive.
description: major revision, (extended) journal version with limitations section
Environment-Assisted Error Correction of Single-Qubit Phase Damping
Creators: name: Trendelkamp-Schroer, Benjamin
name: Helm, Julius
name: Strunz, Walter T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Open quantum system dynamics of random unitary type may in principle be fully undone. Closely following the scheme of environment-assisted error correction proposed by Gregoratti and Werner [M. Gregoratti and R. F. Werner, J. Mod. Opt. 50(6), 915-933 (2003)], we explicitly carry out all steps needed to invert a phase-damping error on a single qubit. Furthermore, we extend the scheme to a mixed-state environment. Surprisingly, we find cases for which the uncorrected state is closer to the desired state than any of the corrected ones.
Diplomacy and the Lomonosov Ridge : prospects for international cooperation in the Arctic
Creators: name: Jelinski, Cameron
Publisher: name: University of British Columbia
Year: 2010

description: This paper examines the politics of continental shelf delimitation and cooperation in the central Arctic Ocean, where media and political rhetoric often point to the possibility for conflict. This analysis is divided into two main sections. First, the current political and legal situation is outlined, with a focus on the Lomonosov Ridge which traverses the ocean floor near the North Pole. While several countries including Russia, Denmark, and Canada may have adjacent and even overlapping claims to the continental shelf in this area, these players have also pursued significant scientific and political cooperation concerning the continental shelf, and an elaborate regime of international law, centred on the United Nations Convention on the Law of the Sea, has been largely respected by the players in the region. Second, the paper argues that a number of measures, including many interim approaches, are available to avert potential political disputes. The research examines the feasibility of such cooperation towards a political agreement, which could take the form of a joint or coordinated submission to a UN body, a provisional delimitation arrangement, or a joint development zone. The paper argues that in light of the degree of cooperation so far, as well as the existence of political accords elsewhere which may serve as useful models, the countries in the region should consider preempting disputes over the continental shelf by pursuing an interim political agreement in the central Arctic Ocean.
Sample-to-sample fluctuations in real-network ensembles
Creators: name: Carlson, Nicole
name: Kim, Dong-Hee
name: Motter, Adilson E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Network modeling based on ensemble averages tacitly assumes that the networks meant to be modeled are typical in the ensemble. Previous research on network eigenvalues, which govern a range of dynamical phenomena, has shown that this is indeed the case for uncorrelated networks with minimum degree $\ge 3$. Here we focus on real networks, which generally have both structural correlations and low-degree nodes. We show that: (i) the ensemble distribution of the dynamically most important eigenvalues can be not only broad and far apart from the real eigenvalue but also highly structured, often with a multimodal rather than bell-shaped form; (ii) these interesting properties are found to be due to low-degree nodes, mainly those with degree $< 3$, and network communities, which is a common form of structural correlation found in real networks. In addition to having implications for ensemble-based approaches, this shows that low-degree nodes may have a stronger influence on collective dynamics than previously anticipated from the study of computer-generated networks.