cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Narrando@Fiesole. Abitare il paesaggio, ascoltarne le voci
Creators: name: De Simonis, Paolo
name: Lapiccirella Zingari, Valentina
name: Mantovani, Silvia
Publisher: name: Ri-Vista
Year: 2015

description: The Faro Convention (2005) established that “heritage community” consists of people who value specific aspects of cultural heritage which they wish, within the framework of public action, to sustain and transmit to future generations. In all regions there are hundreds of voices waiting to make themselves heard, that have a high potential in terms of teaching, identification of values, community building. The "Narrating@ Fiesole" project intends to start walking on a path that connects landscape and cultural heritage, understood as a living heritage and storytelling. The main objective is to give voice to this "heritage community", creating a participatory archive on- line, an innovative tool of knowledge, memory, education and development of the territory and of its landscapes.
description: Ri-Vista, Vol 11 No 1 (2013)
teoria della vivibilità, Bollati Boringhieri, Torino 2011
Creators: name: Salizzoni, Emma
Publisher: name: Ri-Vista
Year: 2015

description: The current environmental crisis calls, with utter necessity, for a change in the way landscape and liveableness are conceived. This is, however, a complex process, contrasted by several factors, such as human tendency to reify what already exists and to think conservatively. Education can support this process, playing a crucial role in promoting a change in the approach towards global and controversial problems such as landscape and liveableness. An effective educational method on these issues should be focused on the learning process and based on a different way of perceiving the temporal dimension of the current environmental problems, highlighting their consequences on the next generations.
description: Ri-Vista, Vol 11 No 1 (2013)
Limits to the observation of the Unruh radiation via first-quantized hydrogen-like atoms
Creators: name: Falcone, Riccardo
name: Conti, Claudio
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider ionized hydrogen-like atoms accelerated by an external electric field to detect Unruh radiation. By applying quantum field theory in the Rindler spacetime, we show that the first-quantized description for hydrogen-like atoms cannot always be adopted. This is due to the frame-dependent definition of particles as positive and negative frequency field modes. We show how to suppress such a frame-dependent effect by constraining the atomic ionization and the electric field. We identify the physical regimes with nonvanishing atomic excitation probability due to the Unruh electromagnetic background. We recognize the observational limits for the Unruh effect via first-quantized atomic detectors, which appear to be compatible with current technology. Notably, the non-relativistic energy spectrum of the atom cannot induce coupling with the thermal radiation, even when special relativistic and general relativistic corrections are considered. On the contrary, the coupling with the Unruh radiation arises because of relativistic hyperfine splitting.
New analysis plan: Attributions About and Responses to Imagined Future Romantic Partners’ Behaviors: Links to Adolescent Attachment to Parents
Creators: name: Fitter, Megan
name: Cassidy, Jude
name: Cassidy, Jude
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: adolescence
subject: attachment
subject: attributions
subject: social information processing

description: This pre-registration describes a new set of analyses and the process through which the ideas for these analyses unfolded.
“WITHOUT DIFFERENCE, DISTINCTION, OR SEPARATION”:  AGOTES, DISCRIMINATION, AND BELONGING IN NAVARRE, 1519-1730
Creators: name: Kessel, Emma Hall
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: This thesis is grounded in Navarrese court cases from the sixteenth until the eighteenth centuries, and concerns the agotes of northern Spain. This social group was kept at the margins of Navarrese communities during the early modern period, confined to certain jobs and allowed to live only in certain neighborhoods. Nevertheless, throughout the early modern period agotes and non-agotes litigated agote rights in courts. This thesis utilizes court cases brought by both agotes and non-agotes in order to understand the concerns of both agotes and non-agotes. These concerns centered around the physical spaces into which agotes were allowed, as well as their rights to enter into marriage and professional contracts. The thesis argues that, during this period, agotes and non-agotes were highly concerned with the access into exclusive spaces that agotes had, and attempted to control that access through the court system.
Investigating dark matter substructure with pulsar timing: I. Constraints on ultracompact minihalos
Creators: name: Clark, Hamish A.
name: Lewis, Geraint F.
name: Scott, Pat
Publisher: name: arXiv
Year: 2015
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: FOS: Physical sciences

description: Small-scale dark matter structure within the Milky Way is expected to affect pulsar timing. The change in gravitational potential induced by a dark matter halo passing near the line of sight to a pulsar would produce a varying delay in the light travel time of photons from the pulsar. Individual transits produce an effect that would either be too rare or too weak to be detected in 30-year pulsar observations. However, a population of dark matter subhalos would be expected to produce a detectable effect on the measured properties of pulsars if the subhalos constitute a significant fraction of the total halo mass. The effect is to increase the dispersion of measured period derivatives across the pulsar population. By statistical analysis of the ATNF pulsar catalogue, we place an upper limit on this dispersion of $\log σ_{\dot{P}} \leq -17.05$. We use this to place strong upper limits on the number density of ultracompact minihalos within the Milky Way. These limits are completely independent of the particle nature of dark matter.
description: 9 pages, 5 figues, includes erratum published in MNRAS
Four New Planetary Nebulae Toward the Small Magellanic Cloud
Creators: name: Drašković, Danica
name: Parker, Quentin A.
name: Reid, Warren A.
name: Stupar, Milorad
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present four new planetary nebulae (PNe) discovered in the Small Magellanic Cloud (SMC) from deep UK Schmidt telescope (UKST) narrow band H-alpha and broad-band short-red "SR" continuum images and confirmed spectroscopically. All new PNe show strong [NII]/H-alpha ratios in their spectra. We describe and detail the process of PN candidate selection based on wide-field multi-wavelength imaging of the SMC and our subsequent spectroscopic confirmation and classification. We carefully reviewed archived information and available imagery for previous SMC PN detections and various other types of emission objects in the SMC as a training set to help identify new PN candidates. These 4 preliminary discoveries provide a 4% increase to the previously known SMC PN population of ~100. Once spectroscopic follow-up of all our newly identified SMC PN candidates is complete, we expect to increase the total number of known SMC PNe by up to 50%. This will permit a significant improvement to determination of the SMC PN luminosity function and enable further insights into the chemical evolution and kinematics of the SMC PN population.
description: 10 pages, 3 figures, 3 tables, accepted for publication in MNRAS
Non-normalizable quasi-equilibrium states under fractional dynamics
Creators: name: Defaveri, Lucianno
name: Santos, Maike A. F. dos
name: Kessler, David A.
name: Barkai, Eli
name: Anteneodo, Celia
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study non-normalizable quasi-equilibrium states (NNQE) arising from anomalous diffusion. Initially, particles in contact with a thermal bath are released from an asymptotically flat potential well, with dynamics that is described by fractional calculus. For temperatures that are sufficiently low compared to the potential depth, the properties of the system remain almost constant in time. We use the fractional-time Fokker-Planck equation (FTFPE) and continuous-time random walk approaches to calculate the ensemble averages of observables. We obtain analytical estimates of the duration of NNQE, depending on the fractional order, from approximate theoretical solutions of the FTFPE. We study and compare two types of observables, the mean square displacement typically used to characterize diffusion, and the thermodynamic energy. We show that the typical time scales for stagnation depend exponentially on the activation energy in units of temperature multiplied by a function of the fractional exponent.
description: 9 pages, 6 figures
A new approach to the maser emission in the solar corona
Creators: name: Regnier, Stephane
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The electron plasma frequency $ω_{pe}$ and electron gyrofrequency $Ω_e$ are two parameters that allow us to describe the properties of a plasma and to constrain the physical phenomena at play, for instance, whether a maser instability develops. In this paper, we aim to show that the maser instability can exist in the solar corona. We perform an in-depth analysis of the $ω_{pe}$/$Ω_e$ ratio for simple theoretical and complex solar magnetic field configurations. Using the combination of force-free models for the magnetic field and hydrostatic models for the plasma properties, we determine the ratio of the plasma frequency to the gyrofrequency for electrons. For the sake of comparison, we compute the ratio for bipolar magnetic fields containing a twisted flux bundle, and for four different observed active regions. We also study how $ω_{pe}$/$Ω_e$ is affected by the potential and non-linear force-free field models. We demonstrate that the ratio of the plasma frequency to the gyrofrequency for electrons can be estimated by this novel method combining magnetic field extrapolation techniques and hydrodynamic models. Even if statistically not significant, values of $ω_{pe}$/$Ω_e$ $\leq$ 1 are present in all examples, and are located in the low corona near to photosphere below one pressure scale-height and/or in the vicinity of twisted flux bundles. The values of $ω_{pe}$/$Ω_e$ are lower for non-linear force-free fields than potential fields, thus increasing the possibility of maser instability in the corona. From this new approach for estimating $ω_{pe}$/$Ω_e$, we conclude that the electron maser instability can exist in the solar corona above active regions. The importance of the maser instability in coronal active regions depends on the complexity and topology of the magnetic field configurations.
description: 10 pages, 7 figures, 1 appendix (with 1 figure)
Emilio Sereni e la cartografia. Un incontro mancato?
Creators: name: Rossi, Luisa
name: Gemignani, Carlo A.
Publisher: name: Ri-Vista
Year: 2015

description: The originality of Emilio Sereni's new use of pictorial images in his most known work, have drawn the attention of many scholars. Regardless of positive or negative opinions, an underestimated evaluation of the countless types of sources used by the author for his argumentation about italian rural landscapes, has occurred. In particular, this work analyses the approach of Sereni towards historic and thematic cartography.
description: Ri-Vista, Vol 10 No 2 (2012)
VarIabiLity seLection of AstrophysIcal sources iN PTF (VILLAIN) I. Structure function fits to 71 million objects
Creators: name: Bruun, S. H.
name: Agnello, A.
name: Hjorth, J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Context. Lightcurve variability is well-suited for characterising objects in surveys with high cadence and long baseline. This is especially relevant in view of the large datasets to be produced by the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST). Aims. We aim to determine variability parameters for objects in the Palomar Transient Factory (PTF) and explore differences between quasars (QSOs), stars and galaxies. We will relate variability and colour information in preparation for future surveys. Methods. We fit joint likelihoods to structure functions (SFs) of 71 million PTF lightcurves with a Markov Chain Monte Carlo method. For each object, we assume a power law SF and extract two parameters: the amplitude on timescales of one year, $A$, and a power law index, $γ$. With these parameters and colours in the optical (Pan-STARRS1) and mid infrared (WISE), we identify regions of parameter space dominated by different types of spectroscopically confirmed objects from SDSS. Candidate QSOs, stars and galaxies are selected to show their parameter distributions. Results. QSOs have high amplitude variations in the $R$ band, and the strongest timescale dependence of variability. Galaxies have a broader range of amplitudes and low timescale dependency. With variability and colours, we achieve a photometric selection purity of 99.3 % for QSOs. Even though hard cuts in monochromatic variability alone are not as effective as seven-band magnitude cuts, variability is useful in characterising object sub-classes. Through variability, we also find QSOs that were erroneously classified as stars in the SDSS. We discuss perspectives and computational solutions in view of the upcoming LSST.
description: Accepted by A&A on 11/04/2023, 16 pages, 14 figures
Factorization of the identity through operators with large diagonal
Creators: name: Laustsen, Niels Jakob
name: Lechner, Richard
name: Müller, Paul F. X.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46B25, 60G46, 30H10, 47B37, 47A53

description: Given a Banach space~$X$ with an unconditional basis, we consider the following question: does the identity on~$X$ factor through every operator on~$X$ with large diagonal relative to the unconditional basis? We show that on Gowers' unconditional Banach space, there exists an operator for which the answer to the question is negative. By contrast, for any operator on the mixed-norm Hardy spaces $H^p(H^q)$, where $1 \leq p,q < \infty$, with the bi-parameter Haar system, this problem always has a positive solution. The spaces $L^p, 1 < p < \infty$, were treated first by Andrew~[{\em Studia Math.}~1979].
description: 30 pages, 13 figures
A STORY OF RECONCILIATION IN A NARRATIVE OF WAR
Creators: name: Heywood, Nigel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: The people of present-day South Sudan have been at war for more than 50 years. This has created a militarized culture of cyclical violence. In this thesis I examine a personal narrative told by Nyok John Achuoth Gor–a South Sudanese Australian refugee–that describes his reconciliation across tribal divisions with another refugee, Peter Kaka. Using folklore narrative theory, I analyze Nyok’s story exploring how it reveals his own formation as a peacebuilder through reconciled relationships, and in turn, how he uses his story as a tool for peacebuilding within his Australian and South Sudanese communities. In the face of South Sudan’s continued failed peace agreements and protracted violence, Nyok’s story challenges the collective cultural narrative of inevitable retaliation and demonstrates that developing an informal network of reconciled peacebuilders helps reverse cycles of conflict, proactively develops adaptive platforms for peace actions, and influences formal political and tribal institutions toward peace.
Applying Dynkin's isomorphism: An alternative approach to understand the Markov property of the de Wijs process
Creators: name: Mondal, Debashis
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Dynkin's (Bull. Amer. Math. Soc. 3 (1980) 975-999) seminal work associates a multidimensional transient symmetric Markov process with a multidimensional Gaussian random field. This association, known as Dynkin's isomorphism, has profoundly influenced the studies of Markov properties of generalized Gaussian random fields. Extending Dykin's isomorphism, we study here a particular generalized Gaussian Markov random field, namely, the de Wijs process that originated in Georges Matheron's pioneering work on mining geostatistics and, following McCullagh (Ann. Statist. 30 (2002) 1225-1310), is now receiving renewed attention in spatial statistics. This extension of Dynkin's theory associates the de Wijs process with the (recurrent) Brownian motion on the two dimensional plane, grants us further insight into Matheron's kriging formula for the de Wijs process and highlights previously unexplored relationships of the central Markov models in spatial statistics with Markov processes on the plane.
description: Published at http://dx.doi.org/10.3150/13-BEJ541 in the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
LOWER VIBRIO VULNIFICUS CONCENTRATIONS OBSERVED IN SUSPENDED, FARMED OYSTERS THAN IN WILD, ON-BOTTOM OYSTERS IN EASTERN NORTH CAROLINA
Creators: name: Canty, Rachel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: In North Carolina (NC) and throughout the United States (US), shellfish aquaculture is growing rapidly in an attempt to meet increasing seafood demands.  Shellfish, including oysters, are filter-feeders and can concentrate bacteria from the water column, including two human pathogens, Vibrio vulnificus and Vibrio parahaemolyticus. Due to roughly 50% of commercial oysters being consumed raw, these bacteria pose a serious risk to consumers and a problem to the growing oyster industry in NC. Oysters can be harvested from the wild or they can be farmed, in which case they are grown using a variety of aquaculture systems.  With increases in farmed oyster production, few studies have been conducted to determine whether oyster aquaculture grow-out methods (e.g. floating bags, floating/submerged cages) influence Vibrio concentrations in oyster meats. Of these few studies, none have been conducted in NC. In this study, we compared the total Vibrio, total and potentially pathogenic V. vulnificus, and total and potentially pathogenic V. parahaemolyticus concentrations of wild (on-bottom) and farmed (suspended) oysters harvested during the summer season of 2018.  This study found that total V. vulnificus and potentially pathogenic V. vulnificus concentrations were lower in suspended oysters (unpaired t-test, p=0.0334). Over the short duration of this study, confirmed V. parahaemolyticus concentrations were not substantially different in wild on-bottom versus suspended oysters (unpaired t-test, p=0.2202). In addition to our intended study results, this study has added to a growing body of literature that shows the proportion of potentially pathogenic V. parahaemolyticus found in NC waters and across all types of oysters in NC is very low (less than 1% in this study).  Additionally, aside from few discrepancies, culture methods were accurate for quantifying Vibrio concentrations, although the range of values observed was high on certain dates and molecular methods were necessary for evaluation of potential pathogenicity. Although this study found some interesting patterns, the results would be best supplemented by another study with a larger geographical range and longer period of study.
Minimum Spectral Connectivity Projection Pursuit
Creators: name: Hofmeyr, David P.
name: Pavlidis, Nicos G.
name: Eckley, Idris A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: I.5.3
subject: 62H30

description: We study the problem of determining the optimal low dimensional projection for maximising the separability of a binary partition of an unlabelled dataset, as measured by spectral graph theory. This is achieved by finding projections which minimise the second eigenvalue of the graph Laplacian of the projected data, which corresponds to a non-convex, non-smooth optimisation problem. We show that the optimal univariate projection based on spectral connectivity converges to the vector normal to the maximum margin hyperplane through the data, as the scaling parameter is reduced to zero. This establishes a connection between connectivity as measured by spectral graph theory and maximal Euclidean separation. The computational cost associated with each eigen-problem is quadratic in the number of data. To mitigate this issue, we propose an approximation method using microclusters with provable approximation error bounds. Combining multiple binary partitions within a divisive hierarchical model allows us to construct clustering solutions admitting clusters with varying scales and lying within different subspaces. We evaluate the performance of the proposed method on a large collection of benchmark datasets and find that it compares favourably with existing methods for projection pursuit and dimension reduction for data clustering.
Interrogating Power and Oppression in Community Based Participatory Research: A Scoping Review
Creators: name: Tang Yan, Catalina
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social Work
subject: FOS: Sociology
subject: Social and Behavioral Sciences
subject: Community Based Participatory Research
subject: Participatory Action Research
subject: Power and Oppression
subject: Social Justice

description: This is the registration fo a protocol for a scoping review which seeks to answer the question: What are researchers and community stakeholders engaged in Community-Based Participatory Action Research (CBPR) collaborations interrogating systems of power and oppression to support community-driven change efforts towards social justice?
Stochastic Soiling Loss Models for Heliostats in Concentrating Solar Power Plants
Creators: name: Picotti, Giovanni
name: Cholette, Michael E.
name: Anderson, Cody B.
name: Steinberg, Theodore A.
name: Manzolini, Giampaolo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Reflectance losses on solar mirrors due to soiling are a significant challenge for Concentrating Solar Power (CSP) plants. Soiling losses can vary significantly from site to site -- with (absolute) reflectance losses varying from fractions of a percentage point up to several percentage points per day (pp/day), a fact that has motivated several studies in soiling predictive modelling. Yet, existing studies have so far neglected the characterization of statistical uncertainty in their parameters and predictions. In this paper, two reflectance loss models are proposed that model uncertainty: an extension of a previously developed physical model and a simplified model. A novel uncertainty characterization enables Maximum Likelihood Estimation techniques for parameter estimation for both models, and permits the estimation of parameter (and prediction) confidence intervals. The models are applied to data from ten soiling campaigns conducted at three Australian sites (Brisbane, Mount Isa, Wodonga). The simplified model produces high-quality predictions of soiling losses on novel data, while the semi-physical model performance is mixed. The statistical distributions of daily losses were estimated for different dust loadings. Under median conditions, the daily soiling losses for Brisbane, Mount Isa, and Wodonga are estimated as $0.53 \pm 0.66$, $0.08 \pm 0.08$, and $0.58 \pm 0.15$ pp/day, respectively. Yet, higher observed dust loadings can drive average losses as high as $2$ pp/day. Overall, the results suggest a relatively simple approach characterizing the statistical distributions of soiling losses using airborne dust measurements and short reflectance monitoring campaigns.
description: 55 pages, 13 figures
Magnetic mechanisms of pairing in strongly correlated electron system of copper oxides
Creators: name: Ovchinnikov, S. G.
name: Makarov, I. A.
name: Shneyder, E. I.
name: Togushova, Yu. N.
name: Gavrichkov, V. A.
name: Korshunov, M. M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The multielectron LDA+GTB approach has been developed to calculate electronic structure of strongly correlated cuprates. At low energies the effective Hamiltonian of the $t - t' - t" - {t_ \bot } - {J^ * } - {J_ \bot }$-model has been derived with parameters coming from the ab initio calculation for LSCO. The electronic structure of LSCO has been calculated self-consistently with the short-range antiferromagnetic order for various doping level. Two Lifshitz-type quantum phase transitions with Fermi surface topology changes have been found at dopings $x_{c1}=0.15$ and $x_{c2}=0.24$. Its effect on normal and superconducting properties has been calculated. The interatomic exchange parameter and its pressure dependence has been calculated within LDA+GTB scheme. The magnetic mechanisms of d-wave pairing induced by static and dynamical spin correlations are discussed. Simultaneous treatment of magnetic and phonon pairing results in the conclusion that both contributions are of the same order. For two layer cuprates like YBCO the interlayer hopping and exchange effects on the electronic structure and doping dependence of $T_c$ is discussed as well as the Coulomb interaction induced mechanism of pairing.
description: 51 pages. v2 - added references to composite operator method
LED Transillumination in Dentistry
Creators: name: Pettit, Nicholas
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: The purpose of this experiment was to evaluate the diagnostic test of transillumination. Throughout the literature transillumination is recognized as an important instrument to be utilized in the detection of cracks and fractures of teeth; however, there is no evidence found regarding the ideal specifications of these devices to accomplish this important task. The first part of this study evaluated the tip diameter and luminous flux (lumens) of different types of LED transilluminators, while the second part examined the clinical ability of these devices to detect coronal cracks and fractures in an in vitro model replacing various clinical scenarios. We found a wide variation in the tip diameter and lumens output of the transilluminator devices that were tested and correlated a higher sensitivity in crack detection with increased lumens and tip diameter.
Les campagnes urbaines: quels scénarios pour demain?
Creators: name: Donadieu, Pierre
Publisher: name: Ri-Vista
Year: 2015

description: In this article, we will first analyze the political and socio-economic processes, which led to the disappearance of urban agriculture over the last 50 years. Then, we will illustrate how in the 21st century the concept of common urban landscape opens to new public policies related to the persistence of agricultural spaces and activities in urban areas. Last, we will describe three scenarios of agriculture and gardening, which can be developed in the same urban territory.
description: Ri-Vista, Vol 10 No 2 (2012)
Fractional quantum anomalous Hall states in twisted bilayer MoTe$_2$ and WSe$_2$
Creators: name: Reddy, Aidan P.
name: Alsallom, Faisal F.
name: Zhang, Yang
name: Devakul, Trithep
name: Fu, Liang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate via exact diagonalization that AA-stacked TMD homobilayers host fractional quantum anomalous Hall (FQAH) states with fractionally quantized Hall conductance at fractional fillings $n=\frac{1}{3},\, \frac{2}{3}$ and zero magnetic field. While both states are most robust at angles near $θ\approx 2^{\circ}$, the $n=\frac{1}{3}$ state gives way to a charge density wave with increasing twist angle whereas the $n=\frac{2}{3}$ state survives across a much broader range of twist angles. We show that the competition between FQAH states and charge density wave or metallic phases is primarily controlled by the wavefunctions and dispersion of the underlying Chern band, respectively. Additionally, Ising ferromagnetism is found across a broad range of fillings where the system is insulating or metallic alike. The spin gap is enhanced at filling fractions where integer and fractional quantum anomalous Hall states are formed.
description: Journal version (PRB, Editor's suggestion). Supplementary Material added. Main: 10 pages, 9 figures. SM: 8 pages, 5 figures
Levels and Change in Purpose in Life as Predictors of Physical Health
Creators: name: Willroth, Emily
name: Mroczek, Dan
name: Hill, Patrick
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Previous research has shown that having a purpose in life, a key component of well-being, is associated with healthier aging and longer survival. However, well-being is characterized by both stability and change across the lifespan. Levels of well-being and longitudinal changes in well-being have been found to have unique associations with physical health. The associations between longitudinal change in purpose in life and health outcomes are not yet known. In the planned research, we will use data from the Midlife in the United States (MIDUS) and Midlife in Japan (MIDJA) studies to examine associations between levels and longitudinal change in purpose in life on the one hand and self-reported general health and chronic health conditions on the other hand.
Symmetry-projected cluster mean-field theory applied to spin systems
Creators: name: Papastathopoulos-Katsaros, Athanasios
name: Henderson, Thomas M.
name: Scuseria, Gustavo E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We introduce $S_z$ spin-projection based on cluster mean-field theory and apply it to the ground state of strongly-correlated spin systems. In cluster mean-field, the ground state wavefunction is written as a factorized tensor product of optimized cluster states. In previous work, we have focused on unrestricted cluster mean-field, where each cluster is $S_z$ symmetry adapted. We here remove this restriction by introducing a generalized cluster mean-field (GcMF) theory, where each cluster is allowed to access all $S_z$ sectors, breaking $S_z$ symmetry. In addition, a projection scheme is used to restore global $S_z$, which gives rise to $S_z$ spin-projected generalized cluster mean-field (S$_z$GcMF). Both of these extensions contribute to accounting for inter-cluster correlations. We benchmark these methods on the 1D, quasi-2D, and 2D $J_1-J_2$ and $XXZ$ Heisenberg models. Our results indicate that the new methods (GcMF and S$_z$GcMF) provide a qualitative and semi-quantitative description of the Heisenberg lattices in the regimes considered, suggesting them as useful references for further inter-cluster correlations, which are discussed in this work.
Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 69, Nr. 2 (1991)
Creators: name: Germania : Anzeiger Der Römisch-Germanischen Kommission Des Deutschen Archäologischen Instituts
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Zur Rachmani-Periode in Thessalien...359-388
Rudolf Bergmann, Die Wüstungen des Geseker Hellwegraumes...489-494
Hans Hingst, Urnenfriedhöfe der vorrömischen Eisenzeit aus Südostholstein...466-469
Alexandra de Poorter et Pierre-J. Claeys, Les sigles sur materiaux de construction romains en terre cuite en Belgique...475-478
Titelei
Inhalt
Some Riemann Hypotheses from Random Walks over Primes
Creators: name: França, Guilherme
name: LeClair, André
Publisher: name: arXiv
Year: 2015
Subjects: subject: Number Theory (math.NT)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The aim of this article is to investigate how various Riemann Hypotheses would follow only from properties of the prime numbers. To this end, we consider two classes of $L$-functions, namely, non-principal Dirichlet and those based on cusp forms. The simplest example of the latter is based on the Ramanujan tau arithmetic function. For both classes we prove that if a particular trigonometric series involving sums of multiplicative characters over primes is $O(\sqrt{N})$, then the Euler product converges in the right half of the critical strip. When this result is combined with the functional equation, the non-trivial zeros are constrained to lie on the critical line. We argue that this $\sqrt{N}$ growth is a consequence of the series behaving like a one-dimensional random walk. Based on these results we obtain an equation which relates every individual non-trivial zero of the $L$-function to a sum involving all the primes. Finally, we briefly mention important differences for principal Dirichlet $L$-functions due to the existence of the pole at $s=1$, in which the Riemann $ζ$-function is a particular case.
description: Matches published version
Inequality Unexplained: An Experimental Test of Differential Treatment in School Discipline Decision-Making
Creators: name: Davis, Sarah McGill
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: Research consistently shows a high level of racial disparity in public school discipline whereby white students receive fewer and less severe disciplinary actions than their black classmates, even for the same offense (Losen and Gillespie 2012; Fabelo et al. 2011; Fenning and Rose 2007). This study employs a survey experiment to test whether this disparity is driven by differential treatment.  U.S. public school educators were presented with hypothetical student misbehavior vignettes and asked their disciplinary recommendation. I control for student behavior while varying student race and gender in order to determine whether educators recommend differential discipline across student race and gender categories. Multivariate analyses of the survey experiment responses fail to provide evidence for the differential treatment hypothesis. I discuss these findings in the context of the current literature, offering four possible explanations for the study’s null results.
Il progetto Cives, un ‘luogo’ d’incontro tra agricoltura, città e partecipazione
Creators: name: Sartori, Mario
Publisher: name: Ri-Vista
Year: 2015

description: Cives born as a civic participation project to increase and re-create the link between town and rural landscape, thinking an active role of citizens to give solutions for the reuse and the enhance of urban and rural areas, to increase and better organize the demand of goods and services of peri- urban countryside. On one side, there are actions for a better and bigger fruition of productive agriculture, on the other side there are proposals for requalification and revitalization of strategic Milan’s spaces, as the Darsena that begins a meeting point between products and cultural services of countryside and connection point through the system of Navigli with the rural landscape.
description: Ri-Vista, Vol 10 No 2 (2012)
L’inventario nazionale del paesaggio rurale storico. Nuovi indirizzi per la pianificazione delle aree rurali
Creators: name: Agnoletti, Mauro
Publisher: name: Ri-Vista
Year: 2015

description: In Italy there is a great richness of rural landscapes, created by man during the centuries. Their recognition, conservation and dynamic management represent important actions to keep this heritage. The essay tells about the result of a research on historical rural landscapes led by the Ministry of Agricoltural, Food and Forestry Policies, published in 2010, that starting from the work of Sereni and Gambi, faces the theme of identification and classification of cultural-historical landscapes and defines 120 “traditional” landscapes.
description: Ri-Vista, Vol 10 No 2 (2012)
IMPROVING EXCLUSIVE BREASTEEDING RATES IN LATINA WOMEN:  PILOTING HUG YOUR BABY USING PEER COUNSELORS
Creators: name: White, LaKasha Godwin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: ABSTRACT      LaKasha G. White: Improving Exclusive Breastfeeding Rates in Latina Women:       Piloting HUG Your Baby Using Peer Counselors      (Under the direction of Julee Waldrop)      Background: In the first few hours, days or weeks of an infant’s life, some mothers implement formula feeding along with breastfeeding—commonly known as “Los Dos” or mixed feeding.  Mixed feeding or Los Dos occurs despite the American Academy of Pediatrics’ (AAP) recommendation of exclusive breastfeeding (EBF) for the first six months of life. Increasing the opportunities for continuing education and training among peer counselors diminishes barriers to breastfeeding within minority populations.  Local Problem: The local Women, Infants, and Children (WIC) staff and project leader identified educational needs about infant feeding cues and child development as key interventions that may help Latina mothers increase breastfeeding exclusivity. Aim: The primary purpose of this quality improvement (QI) project was to improve EBF rates among Latina women through providing a model of care using strategies from an evidence-based program called HUG Your Baby: The Roadmap to Breastfeeding Success (The Roadmap). The second purpose was to evaluate the feasibility of implementing this model of care within the WIC department of a public health center.  Methods: Using the Lewin Change theory and quality improvement methods, three WIC peer counselors (PCs) were trained on HUG Your Baby: The Roadmap to Breastfeeding Success with the intent that they would use the strategies with their Latina clients.  Results: Upon conclusion of the 8-month project, PCs found The Roadmap to be a practical tool that aids in improving breastfeeding outcomes.  PCs reported acquiring new knowledge and skills to use with clients.  EBF rates among the same group of Latina Women decreased over time; however, EBF duration improved. Conclusions: Findings suggest that the use of The Roadmap strategies by PCs may improve EBF duration.  The Roadmap to Breastfeeding Success is a feasible tool to use in the WIC setting.
A data-driven method for Higgs boson analyses in di-τ final states for the LHC Run II and beyond
Creators: name: Brommer, Sebastian
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2023
Subjects: Teilchenphysik
particle physics
CMS Experiment
CERN
taulepton
LHC

description: Das τ-Embedding ist eine datenbasierte Methode zur Abschätzung des Beitrags von Prozessen mit zwei τ-Leptonen im Ereignis. Die Methode verwendet einen ereignisbasier- ten Ansatz, bei dem zwei rekonstruierte Myonen in den Daten ausgewählt werden, die durch zwei simulierte τ-Leptonenzerfälle ersetzt werden. Das daraus resultierende Ereignis vereint die simulierten τ-Leptonenzerfälle mit einem sonst unveränderten Ereignis. Das τ-Embedding führt zu einer verbesserten Beschreibung der Eigenschaften von Jets und von Pile-up-Kollisionen. Es ist die wichtigste Abschätzungsmethode für Untergründe mit zwei τ-Leptonen im Endzustand innerhalb der CMS-Kollaboration und wurde in den letzten Jahren in zahlreichen Higgs-Boson-Analysen in ττ-Endzuständen angewendet. In dieser Arbeit wird die neueste Implementierung der Methode beschrieben. In einem umfassenden, Analysebeispiel wird die Methode mit einem Modell verglichen, das auf vollständig simulierten Prozessen basiert. Mehr als 8 Millionen CPU-Stunden wurden auf- gewendet, um die neue Implementierung von τ-Embedding Ergebnisse für die LHC Run II Analysen zu erzeugen. Die vorgestellten Studien legen den Grundstein für die Verwendung von τ-Embedding in mehreren geplanten Higgs-Boson-Analysen in ττ-Endzuständen auf den kombinierten Datensätzen von Run II und III, die eines der wichtigsten Ergebnisse des LHC-Phase-1-Physikprogramms darstellen werden.
General Rule for Boundary conditions from the Action Principle
Creators: name: Steiner, Roee
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct models where initial and boundary conditions can be found from the fundamental rules of physics, without the need to assume them, they will be derived from the action principle. Those constraints are established from physical view point, and it is not in the form of Lagrange multipliers. We show some examples from the past and some new examples which can be useful, where constraint can be obtained from the action principle. Those actions represent physical models. We show that it is possible to use our rule to get those constraints directly.
Quel che resta della piantata. Trasformazioni del paesaggio agrario lungo il tracciato della via Postumia
Creators: name: Cillis, Marco
Publisher: name: Ri-Vista
Year: 2015

description: The paper is about some influences have led to the transformation of a liner landscape along the ancient via Postumia from Genua to the Adriatic sea, taking into account the great contribution Emilio Sereni gave the history of rural Italian landscape. Comparing archeological and literary sources, maps and plans, the aim is understanding how and how much the features of the road are still alive along the landscape it crosses.
description: Ri-Vista, Vol 10 No 2 (2012)
Paesaggi agrari. L'irrinunciabile eredità scientifica di Emilio Sereni a cura di Massimo Quaini (2011), cinquanta anni dopo Storia del paesaggio agrario
Creators: name: Bonini, Gabriella
Publisher: name: Ri-Vista
Year: 2015

description: The book - catalog Paesaggi agrari. L'irrinunciabile eredità scientifica di Emilio Sereni edith by Massimo Quaini in collaboration with Gabriella Bonini, Claudio Cerreti, Luisa Rossi and Chiara Visentin - acknowledges and deepens into ten chapters the ten sessions in which the documentary exhibition, that brings the same name, is structured and displayed in a permanent space in the Library Archive Institute Cervi in Gattatico (Reggio Emilia). In the process of critical interpretation, embedding documents and images, the book illustrates the path of life, thought and method of Emilio Sereni, fifty years later the publication of Storia del paesaggio agrario italiano (Laterza 1961).
description: Ri-Vista, Vol 10 No 2 (2012)
Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 68 Nr. 1 (1990)
Creators: name: Germania : Anzeiger Der Römisch-Germanischen Kommission Des Deutschen Archäologischen Instituts
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Titelei
Inhalt
Zu einer griechischen Kline und weiteren Südimporten aus dem Fürstengrabhügel Grafenbühl, Asperg, Kr. Ludwigsburg...115-127
Demircihüyük. Die Ergebnisse der Ausgrabungen 1975-1978...254-262
Robert Marichal, Les Graffites de la Graufesenque...289-292
Ákos Kiss, Pannonische Architekturelemente und Ornamentik in Ungarn...300-305
Graeme Barker, Prehistoric farming in Europe...312-315
Variational Bayesian strategies for high-dimensional, stochastic design problems
Creators: name: Koutsourelakis, Phaedon-Stelios
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computation (stat.CO)
subject: Numerical Analysis (math.NA)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This paper is concerned with a lesser-studied problem in the context of model-based, uncertainty quantification (UQ), that of optimization/design/control under uncertainty. The solution of such problems is hindered not only by the usual difficulties encountered in UQ tasks (e.g. the high computational cost of each forward simulation, the large number of random variables) but also by the need to solve a nonlinear optimization problem involving large numbers of design variables and potentially constraints. We propose a framework that is suitable for a large class of such problems and is based on the idea of recasting them as probabilistic inference tasks. To that end, we propose a Variational Bayesian (VB) formulation and an iterative VB-Expectation-Maximization scheme that is also capable of identifying a low-dimensional set of directions in the design space, along which, the objective exhibits the largest sensitivity. We demonstrate the validity of the proposed approach in the context of two numerical examples involving $\mathcal{O}(10^3)$ random and design variables. In all cases considered the cost of the computations in terms of calls to the forward model was of the order $\mathcal{O}(10^2)$. The accuracy of the approximations provided is assessed by appropriate information-theoretic metrics.
Rapid Results Dissemination of Registered COVID-19 Clinical Trials
Creators: name: DeVito, Nicholas
name: Grabitz, Peter
name: Salholz-Hillel, Maia
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: Bioethics and Medical Ethics
subject: clinical trials
subject: Covid-19
subject: publication bias
subject: sars-cov-2
subject: trials transparency

description: Assessing the status of results of COVID-19 clinical trials
The width of quadrangulations of the projective plane
Creators: name: Esperet, Louis
name: Stehlík, Matěj
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We show that every $4$-chromatic graph on $n$ vertices, with no two vertex-disjoint odd cycles, has an odd cycle of length at most $\tfrac12\,(1+\sqrt{8n-7})$. Let $G$ be a non-bipartite quadrangulation of the projective plane on $n$ vertices. Our result immediately implies that $G$ has edge-width at most $\tfrac12\,(1+\sqrt{8n-7})$, which is sharp for infinitely many values of $n$. We also show that $G$ has face-width (equivalently, contains an odd cycle transversal of cardinality) at most $\tfrac14(1+\sqrt{16 n-15})$, which is a constant away from the optimal; we prove a lower bound of $\sqrt{n}$. Finally, we show that $G$ has an odd cycle transversal of size at most $\sqrt{2Δn}$ inducing a single edge, where $Δ$ is the maximum degree. This last result partially answers a question of Nakamoto and Ozeki.
description: 15 pages, 4 figures (revised version)