cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Zip to Zip-it: Compression to Achieve Local Differential Privacy
Creators: name: Taurone, Francesco
name: Lucani, Daniel
name: Zhang, Qi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Local differential privacy techniques for numerical data typically transform a dataset to ensure a bound on the likelihood that, given a query, a malicious user could infer information on the original samples. Queries are often solely based on users and their requirements, limiting the design of the perturbation to processes that, while privatizing the results, do not jeopardize their usefulness. In this paper, we propose a privatization technique called Zeal, where perturbator and aggregator are designed as a unit, resulting in a locally differentially private mechanism that, by-design, improves the compressibility of the perturbed dataset compared to the original, saves on transmitted bits for data collection and protects against a privacy vulnerabilities due to floating point arithmetic that affect other state-of-the-art schemes. We prove that the utility error on querying the average is invariant to the bias introduced by Zeal in a wide range of conditions, and that under the same circumstances, Zeal also guarantee protection against the aforementioned vulnerability. Our numerical results show up to 94% improvements in compression and up to 95% more efficient data transmissions, while keeping utility errors within 2%.
Statistics and Democracy: A Long Story about Trust and Resentment. Revue ECU/EURO, N°56 (2022)
Creators: name: Rosenfeld, Sophia A.
Publisher: name: RESuME
Year: 2022
Subjects: subject: Statistics
subject: FOS: Mathematics
subject: Statistiques
subject: Bureaucracy
subject: Bureaucratie
subject: Trust
subject: Confiance

description: In January 2022, the New York Times revealed, via a review of internal e-mails, all the ingenious ways that the administration of President Donald Trump had tried to manipulate the results of 2020 United States Census for domestic political gain. Even if most of these plots did not succeed, the story is reminiscent of similar efforts at fudging the numbers on the part of the government of Greece at the start of the 2000s. There the goal had been to misrepresent national debt and deficit statistics so as to sway international politics, specifically that nation’s joining of the European Union. This breach ultimately led the European Union to change the rules on data reporting and to produce new penalties for relaying misleading information, but similar stories, from the cooking of the books on unemployment and poverty numbers in Hungary to the falsification of Covid rates across much of the globe, continue to make news. And conversely, when data reporting is actually accurate —as in the vote tallies after the last US presidential element in 2020— such findings are now often not accepted as such by a wide swathe of the public which has become convinced, with the help of oppositional, right-wing parties, that official information cannot be trusted and measurable victories are hoaxes. Is it any wonder that one of the dominant narratives of our times is that “truth” is singularly in trouble these days, indeed that misinformation, disinformation, and conspiracy thinking have taken over public life?
Period Change Rates of Large Magellanic Cloud Cepheids using MESA
Creators: name: Espinoza-Arancibia, F.
name: Catelan, M.
name: Hajdu, G.
name: Rodríguez-Segovia, N.
name: Boggiano, G.
name: Joachimi, K.
name: Muñoz-López, C.
name: Ordenes-Huanca, C.
name: Orquera-Rojas, C.
name: Torres, P.
name: Valenzuela-Navarro, Á.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Pulsating stars, such as Cepheids and RR Lyrae, offer us a window to measure and study changes due to stellar evolution. In this work, we study the former by calculating a set of evolutionary tracks of stars with an initial mass of 4 to 7 $M_\odot$, varying the initial rotation rate and metallicity, using the stellar evolution code Modules for Experiments in Stellar Astrophysics (MESA). Using Radial Stellar Pulsations (RSP), a recently added functionality of MESA, we obtained theoretical instability strip (IS) edges and linear periods for the radial fundamental mode. Period-age, period-age-temperature, period-luminosity, and period-luminosity-temperature relationships were derived for three rotation rates and metallicities, showing a dependence on crossing number, position in the IS, rotation, and metallicity. We calculated period change rates (PCRs) based on the linear periods from RSP. We compared our models with literature results using the Geneva code, and found large differences, as expected due to the different implementations of rotation between codes. In addition, we compared our theoretical PCRs with those measured in our recent work for Large Magellanic Cloud Cepheids. We found good overall agreement, even though our models do not reach the short-period regime exhibited by the empirical data. Implementations of physical processes not yet included in our models, such as pulsation-driven mass loss, an improved treatment of convection that may lead to a better description of the instability strip edges, as well as consideration of a wider initial mass range, could all help improve the agreement with the observed PCRs.
description: 19 pages, 17 figures. Accepted by MNRAS
Additional file 2 of Improving patient-provider communication about chronic pain: development and feasibility testing of a shared decision-making tool
Creators: name: Nananda Col
name: Hull, Stephen
name: Springmann, Vicky
name: Ngo, Long
name: Merritt, Ernie
name: Gold, Susan
name: Sprintz, Michael
name: Genova, Noel
name: Nesin, Noah
name: Tierman, Brenda
name: Sanfilippo, Frank
name: Entel, Richard
name: Pbert, Lori
Publisher: name: figshare
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2: Appendix 2. Screen Shots from ThePainAPP.com (hosts the PainAPP tool).
21st Century Philippine Hybrid Community Radio: The Case Of Radyo Kailian
Creators: name: Francisco, Annabelle B.
Publisher: name: Zenodo
Year: 2019
Subjects: Media and communication studies
Mass communication
Hybrid CRS
Broadcasting

description: Abstract Using case study as an approach, this work analyzed in-depth the hybridity of Radyo Kailian, a community radio station in llocos Sur, Philippines. Findings reveal that Radyo Kailian has a well-defined organizational set up which addresses the crucial interrelationships that influence the behaviour of its members. This hybrid CRS has a leader who nourishes the culture and climate within the organization through building of executive support. However, the realization of the vision for Radyo Kailian is not only the work of its top level management rather it is achieved through unitary cognizance, teamwork, and collaboration among the station personnel and community radio council officers and members. To further understand Radyo Kailian, the management require seeing the whole system through initiating research works and regular evaluations which lead them to carefully analyze existing knowledge, data, and context. The broadcasting platform of Radyo Kailian as a hybrid CRS has become more powerful in terms of building larger communities enhancing its production and improving community members' engagement and participation yet it has maintained its traditional programming and is able to preserve its program contents tailored fit to the needs of its target glocal community. As a hybrid CRS, Radyo Kailian has blended with the Internet transforming the medium into an audio-visual platform. The visual online exposure enhances the broadcasters' positive perception about themselves and the agencies they respectively represent. While the community radio has become an audio-visual platform, what differentiates it from other typical audio-visual media is the immediacy of feedback from both the broadcasters and the listeners as well. Moreover, the emancipation in the blended platform paves the way for these broadcasters to encompass the freedom to tackle topics of any kind regardless of gender specificity without experiencing social stigma. Broadcasters in the hybrid CRS particularly the male ones are not only limited to discuss masculine-related topics when they broadcast on air and online. However, the privileges they enjoy also bring consequences. Broadcasters bear with them greater responsibility not only to themselves but also to their on air and online listeners/viewers. Taking the responsibility of securing the enormous quantity of information present in the platform and being able to filter this information and identify what is genuine and valuable for their listeners/viewers are vital survival skills of broadcasters in the hybrid CRS. Furthermore, the visibility in the online environment also threatens their privacy and security. Hence, they self-regulate and manually filter the influx of information. The liquidity of information in the world wide web and the absence of concrete laws to protect them remain potential threats to the optimal use of the online platform in Radyo Kailian.
Transition from granular to Brownian suspension : an inclined plane experiment
Creators: name: Billon, Alice
name: Forterre, Yoël
name: Pouliquen, Olivier
name: Dauchot, Olivier
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We experimentally revisite the flow down an inclined plane of dense granular suspensions, with particles of sizes in the micron range, for which thermal fluctuations cannot be ignored. Using confocal microscopy on a miniaturized set-up, we observe that, in contrast with standard granular rheology, the flow profiles strongly depend on the particles size. Also, suspensions composed of small enough particles flow at infinitesimal inclinations. From the velocity measurements, an effective rheology is extracted in terms of a friction coefficient as a fonction of the dimensionless shear rate (the viscous number), and of the particle pressure normalized by the thermal pressure. Inspired by a previous work [1], a phenomenological model based on the sum of a thermal contribution describing the glass transition and an athermal contribution capturing the jamming transition is developed, which reproduces well the experimental observations. The model predicts the existence of a glassy friction angle lower than the granular athermal friction angle, a signature of the glass transition in the framework of a pressure imposed rheology.
An intersectional framework for counterfactual fairness in risk prediction
Creators: name: Wastvedt, Solvejg
name: Huling, Jared
name: Wolfson, Julian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Along with the increasing availability of health data has come the rise of data-driven models to inform decision-making and policy. These models have the potential to benefit both patients and health care providers but can also exacerbate health inequities. Existing "algorithmic fairness" methods for measuring and correcting model bias fall short of what is needed for health policy in two key ways. First, methods typically focus on a single grouping along which discrimination may occur rather than considering multiple, intersecting groups. Second, in clinical applications, risk prediction is typically used to guide treatment, creating distinct statistical issues that invalidate most existing techniques. We present summary unfairness metrics that build on existing techniques in "counterfactual fairness" to address both challenges. We also develop a complete framework of estimation and inference tools for our metrics, including the unfairness value ("u-value"), used to determine the relative extremity of unfairness, and standard errors and confidence intervals employing an alternative to the standard bootstrap. We demonstrate application of our framework to a COVID-19 risk prediction model deployed in a major Midwestern health system.
Age-related trajectories of social cognition in youth at clinical high risk for psychosis: An exploratory study
Creators: name: Davidson, C.A.
name: Bearden, C.E.
name: McGlashan, T.H.
name: Cadenhead, K.S.
name: Woods, S.W.
name: Cannon, T.D.
name: Piskulic, D.
name: Cornblatt, B.A.
name: Tsuang, M.T.
name: Johannesen, J.K.
name: Walker, E.F.
name: Addington, J.
name: Seidman, L.J.
name: Mathalon, D.H.
name: Perkins, D.O.
Publisher: name: Elsevier B.V.
Year: 2018

description: Background: Clinical high risk (CHR) status is characterized by impairments in social cognition, but questions remain concerning their stability over development. In cross-sectional analysis of a large naturalistic sample, the current study examined whether those at CHR status show deviant trajectories for age-related change in social cognitive ability, and whether these trajectories are influenced by treatment history. Method: Emotion perception (EP) and theory of mind (ToM) were assessed in 675 CHR and 263 healthy comparison (HC) participants aged 12–35. Age effects in CHR were modeled against HC age-expected performance. Prior medication status was tested for interactions with age. Results: CHR exhibited normal age trajectory for EP, but significantly lower slopes for ToM from age 17 onward. This effect was specific to stimuli exhibiting sarcasm and not to detection of lies. When treatment history was included in the model, age-trajectory appeared normal in CHR subjects previously prescribed both antipsychotics and antidepressant medication, although the blunted trajectory still characterized 80% of the sample. Discussion: Cross-sectional analyses suggested that blunting of ToM in CHR develops in adolescence, while EP abilities were diminished evenly across the age range. Exploratory analyses of treatment history suggested that ToM was not affected, however, in CHRs with lifetime histories of both antipsychotic and antidepressant medications. Reduction in age-expected ToM ability may impair the ability of individuals at CHR to meet social developmental challenges in adolescence. Medication effects on social cognition deserve further study.
Gradient-based optimisation of the conditional-value-at-risk using the multi-level Monte Carlo method
Creators: name: Ganesh, Sundar
name: Nobile, Fabio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: G.3; G.1.6
subject: 65C05, 65K10

description: In this work, we tackle the problem of minimising the Conditional-Value-at-Risk (CVaR) of output quantities of complex differential models with random input data, using gradient-based approaches in combination with the Multi-Level Monte Carlo (MLMC) method. In particular, we consider the framework of multi-level Monte Carlo for parametric expectations and propose modifications of the MLMC estimator, error estimation procedure, and adaptive MLMC parameter selection to ensure the estimation of the CVaR and sensitivities for a given design with a prescribed accuracy. We then propose combining the MLMC framework with an alternating inexact minimisation-gradient descent algorithm, for which we prove exponential convergence in the optimisation iterations under the assumptions of strong convexity and Lipschitz continuity of the gradient of the objective function. We demonstrate the performance of our approach on two numerical examples of practical relevance, which evidence the same optimal asymptotic cost-tolerance behaviour as standard MLMC methods for fixed design computations of output expectations.
description: 26 pages, 18 figures, 1 table, Related to arXiv:2208.07252, Data available at https://zenodo.org/record/7193448
Drivers of beer pricing in Argentina
Creators: name: Larrosa, Juan M.C.
name: Fernández, Lucas
name: Allerborn, Joaquin
name: Gutiérrez, Emiliano M.
name: Uriarte, Juan I.
name: Ramírez Muñoz De Toro, Gonzalo R.
Publisher: name: International Journal on Food System Dynamics
Year: 2024
Subjects: Beer; pricing; weekly data; web scraping; Argentina

description: This study uses web data from the retail beer segment to explore beer pricing dynamics in Argentina amid chronic inflation. We address three main questions: the impact of product attributes on pricing under high inflation, evolving pricing patterns over time, and the effect of the 2020 lockdown. Our analysis unveils the interplay between product attributes, seasonal trends, and inflationary pressures in shaping pricing strategies. While inflation drives rapid adjustments, seasonal trends and product attributes significantly influence pricing decisions. Consumers can benefit from insights into currency fluctuations, fuel costs, and seasonal variations. Beer industry managers can refine pricing strategies to maximize revenue potential amidst economic volatility.
description: International Journal on Food System Dynamics, Vol 15, No 5 (2024)
The Early Psychosis Screener (EPS): Quantitative validation against the SIPS using machine learning
Creators: name: Addington, J.
name: Bearden, C.E.
name: Brucato, G.
name: Walker, E.F.
name: Girgis, R.R.
name: Favorov, O.V.
name: Brodey, I.S.
name: Perkins, D.O.
name: Elkin, K.A.
name: Brodey, B.B.
name: Woods, S.W.
name: Cornblatt, B.A.
name: Walsh, B.
Publisher: name: Elsevier B.V.
Year: 2018

description: Machine learning techniques were used to identify highly informative early psychosis self-report items and to validate an early psychosis screener (EPS) against the Structured Interview for Psychosis-risk Syndromes (SIPS). The Prodromal Questionnaire–Brief Version (PQ-B) and 148 additional items were administered to 229 individuals being screened with the SIPS at 7 North American Prodrome Longitudinal Study sites and at Columbia University. Fifty individuals were found to have SIPS scores of 0, 1, or 2, making them clinically low risk (CLR) controls; 144 were classified as clinically high risk (CHR) (SIPS 3–5) and 35 were found to have first episode psychosis (FEP) (SIPS 6). Spectral clustering analysis, performed on 124 of the items, yielded two cohesive item groups, the first mostly related to psychosis and mania, the second mostly related to depression, anxiety, and social and general work/school functioning. Items within each group were sorted according to their usefulness in distinguishing between CLR and CHR individuals using the Minimum Redundancy Maximum Relevance procedure. A receiver operating characteristic area under the curve (AUC) analysis indicated that maximal differentiation of CLR and CHR participants was achieved with a 26-item solution (AUC = 0.899 ± 0.001). The EPS-26 outperformed the PQ-B (AUC = 0.834 ± 0.001). For screening purposes, the self-report EPS-26 appeared to differentiate individuals who are either CLR or CHR approximately as well as the clinician-administered SIPS. The EPS-26 may prove useful as a self-report screener and may lead to a decrease in the duration of untreated psychosis. A validation of the EPS-26 against actual conversion is underway.
Additional file 1 of Endothelin-1 contributes to the development of virus-induced demyelinating disease
Creators: name: Jin, Young-Hee
name: Bongsu Kang
name: Kang, Hyun S.
name: Koh, Chang-Sung
name: Kim, Byung S.
Publisher: name: figshare
Year: 2020
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1: Supplementary Figure 1 Effects of endothelin administration on the expression of inhibitory and co-stimulatory molecules on monocytes (CD11b+) in the CNS of infected mice. The percentage of inhibitory (PDL-1) and co-stimulatory molecules (CD40, CD80, CD86, and MHC) expressed on CNS CD11b+ cells among the total CNS CD11b+ cells from TMEV-infected mice treated with either PBS or ET-1 (each, n = 3) at 8 dpi (mean ± SD). Data are representative of three independent experiments. *, p < 0.05, and **, p < 0.001. Supplementary Figure 2. Effect of endothelin receptor antagonist treatment on PLP-induced EAE. Mice (n=5/group) was immunized with optimal dose (40 μg PLP) and treated with PBS (cont), BQ610, or BQ788 (1 mg/kg) at 0, 5, 10, 15, 20, 30, and 46 dpi. The disease course was determined using the 5-point scale. BQ788 treated group was significantly (p<0.045) different from other groups based on two-tailed paired t test between 50-76 dpi.
The Communicative Constitution of Hospitality Organization: A Ventriloquial Analysis of Guest Service
Creators: name: Manaluz-Torres, Arnelyn
Publisher: name: Zenodo
Year: 2019
Subjects: Media and communication studies
Hospitality Organization
Ventriloquism
Guest Service
Human Agent
Intangible and Tangible Agents
Traditional Welcome
Touch of Service
Tokens for Service
Frontline Staff

description: Abstract Seeking a form of knowledge that explains the communicative constitution of hospitality organization, I observed, figured out, and made sense of the service interaction that occurred in an actual unscripted conversation between the frontline staff (FLS) and the guest at the hotel front desk. I observed how agents and figures make a difference, how they act, speak, perform and deliver guest service on behalf of their principal. I framed the research problems in terms of incarnating/embodying figures and agents in the hospitality organization within the organizational communication discourse: How is hospitality organization incarnated/embodied in the guest service interaction? What is the configuration of agents in hospitality organization? How agents expressed themselves in the guest service interaction? I booked an overnight stay at a hotel in South Korea to undergo the check-in procedure. I requested a colleague to video record my check-in activity. The service interaction between the frontline staff (FLS) and served as data for my study. Drawing from Cooren's (2010) ventriloquism that applies in the context of an organization, I explained how intangible and tangible agents manifested and found voice or agency in organizational interaction. I uncover agents and figures who took part in the emergence of hospitality organization and completion of guest service. The hospitality organization was incarnated through communication. It was embodied through a hybrid agency of Human, Intangible and Tangible agents. The human, intangible and tangible agents that configure the hospitality organization expressed themselves in the Traditional welcome, Touch of service and Tokens for service. From this data, I developed a theory of guest service that draws from a communicative constitutive understanding of hospitality organizations. Guest service materialized, actualized, presented, embodied itself through all the beings - human, intangible or tangible forms, organizational, structural and technological agents. Communicating amounts to ventriloquizing all these beings that animate and express themselves with and through the FLS. They convey an attachment and passion that were recognizable as embodied in and through the way the FLS talk, act, perform and conduct himself. A series of entities and figures are convoked, invoked, and evoked in their interaction. The significance of providing excellent guest service is an important decision for business performance in the hospitality industry because the satisfaction of guests on the hotel's products and services is indivisible in their mind, it forms a coherent whole with human, intangible and tangible agents collectively accomplishing and delivering guest service.
Spin supercurrent and phase-tunable triplet Cooper pairs via magnetic insulators
Creators: name: Gomperud, Ingvild
name: Linder, Jacob
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We demonstrate theoretically that a dissipationless spin current can flow a long distance through a diffusive normal metal by using superconductors interfaced with magnetic insulators. The magnitude of this spin supercurrent is controlled via the magnetization orientation of the magnetic insulators. The spin supercurrent obtained in this way is conserved in the normal metal just like the charge-current and interestingly has a term which is independent of the superconducting phase difference. The quantum state of the system can be switched between 0 and $π$ by reversing the insulators from a parallel to antiparallel configuration with an external field. We show that the spin-current is carried through the normal metal by superconducting triplet (odd-frequency) correlations and that the superconducting phase difference can be used to enhance these, leaving clear spectroscopic fingerprints in the density of states.
description: 10 pages, 7 figures. Accepted for publication in Phys. Rev. B
Spectral and steady-state properties of fermionic random quadratic Liouvillians
Creators: name: Costa, João
name: Ribeiro, Pedro
name: de Luca, Andrea
name: Prosen, Tomaž
name: Sá, Lucas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study spectral and steady-state properties of generic Markovian dissipative systems described by quadratic fermionic Liouvillian operators of the Lindblad form. The Hamiltonian dynamics is modeled by a generic random quadratic operator, i.e., as a featureless superconductor of class D, whereas the Markovian dissipation is described by $M$ random linear jump operators. By varying the dissipation strength and the ratio of dissipative channels per fermion, $m=M/(2N_F)$, we find two distinct phases where the support of the single-particle spectrum has one or two connected components. In the strongly dissipative regime, this transition occurs for $m=1/2$ and is concomitant with a qualitative change in both the steady-state and the spectral gap that rules the large-time dynamics. Above this threshold, the spectral gap and the steady-state purity qualitatively agree with the fully generic (i.e., non-quadratic) case studied recently. Below $m=1/2$, the spectral gap closes in the thermodynamic limit and the steady-state decouples into an ergodic and a nonergodic sector yielding a non-monotonic steady-state purity as a function of the dissipation strength. Our results show that some of the universal features previously observed for fully random Liouvillians are generic for a sufficiently large number of jump operators. On the other hand, if the number of dissipation channels is decreased the system can exhibit nonergodic features, rendering it possible to suppress dissipation in protected subspaces even in the presence of strong system-environment coupling.
description: 41 pages, 9 figures. v2: minor corrections, as published
title: L-gap surface resonance at Pt(111): Influence of atomic structure, d bands, and spin-orbit interaction
Creators: name: Schöttke, Fabian
name: Krüger, Peter
name: Hammer, Lutz
name: Kißlinger, Tilman
name: Schneider, M. Alexander
name: Donath, Markus
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2024
Subjects: subject: 530 Physics

description: Pt(111) hosts a surface resonance with peculiar properties concerning energy vs momentum dispersion and spin texture. At variance with the free-electron-like behavior of the 𝐿-gap Shockley-type surface states on the fcc(111) surfaces of Au, Ag, and Cu, it splits into several branches with distinct spin polarization around the center of the surface Brillouin zone‾Γ. Theoretical predictions based on density-functional theory vary depending on the particular functionals used. To clarify this issue, we investigate the atomic structure of Pt(111) by low-energy electron diffraction and the unoccupied electronic structure by spin- and angle-resolved inverse photoemission. The experimental results are backed by theoretical studies using different functionals, which show that the characteristics of the surface band depend critically on the lattice constant. From the analysis of the energy-dependent low-energy electron diffraction intensities, we derive structural parameters of the Pt(111) surface relaxation with high accuracy. In addition, we give an unambiguous definition of the nonequivalent mirror-plane directions ‾Γ‾M and ‾Γ‾M′ at fcc(111) surfaces, which is consistent with band-structure calculations and inverse-photoemission data. Concerning the surface resonance at the bottom of the 𝐿 gap, we identified a delicate interplay of several contributions. Lattice constant, hybridization with 𝑑 bands, and the influence of spin-orbit interaction are critical ingredients for understanding the peculiar energy dispersion and spin character of the unoccupied surface resonance.
description: Finanziert durch den Open-Access-Publikationsfonds der Universität Münster.
The Generalized Green's function Cluster Expansion: A Python package for simulating polarons
Creators: name: Carbone, Matthew R.
name: Fomichev, Stepan
name: Millis, Andrew J.
name: Berciu, Mona
name: Reichman, David R.
name: Sous, John
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an efficient implementation of the Generalized Green's function Cluster Expansion (GGCE), which is a new method for computing the ground-state properties and dynamics of polarons (single electrons coupled to lattice vibrations) in model electron-phonon systems. The GGCE works at arbitrary temperature and is well suited for a variety of electron-phonon couplings, including, but not limited to, site and bond Holstein and Peierls (Su-Schrieffer-Heeger) couplings, and couplings to multiple phonon modes with different energy scales and coupling strengths. Quick calculations can be performed efficiently on a laptop using solvers from NumPy and SciPy, or in parallel at scale using the PETSc sparse linear solver engine.
description: 3 pages, software can be found open source under the BSD-3-clause license at github.com/x94carbone/GGCE
23 Research Data Management Things: Edition Free Licenses
Creators: name: Gerlach, Roman
name: Rex, Jessica
name: Lang, Kevin
name: Neute, Nadine
name: Assmann, Cora
name: Lehmann, Anne
Publisher: name: Zenodo
Year: 2021
Subjects: license
lizenz
23 things
23 dinge
creative commons
rdm
research data management
fdm
forschungsdatenmanagement

description: English: You would like to publish your research data and make it reusable and now you are asking yourself: "How do I communicate to other researchers what they are allowed to do with my data?" Use free licenses!
 Free or open licenses are public licenses (one licensor, many licensees) that allow the use, redistribution, and modification of copyrighted works. This also supports the Open Data guiding principle.
 In this handout, we have arranged important information, links and literature on the topic for you. ------------------------------------------- Deutsch: Sie wollen Ihre Forschungsdaten veröffentlichen und nachnutzbar machen und jetzt fragen Sie sich: „Wie kommuniziere ich anderen Forschenden, was diese mit meinen Daten machen dürfen?“ Nutzen Sie offene Lizenzen!
 Freie oder offene Lizenzen sind Jedermannlizenzen (ein/eine Lizenzgeber*in, viele Lizenznehmer*innen), bei denen die Nutzung, Weiterverbreitung und Änderung urheberrechtlich geschützter Werke erlaubt wird. Damit wird ebenfalls der Open Data Leitgedanke unterstützt.
 In dieser Handreichung haben wir wichtige Hinweise, Links und Literatur zum Thema Lizenzen für Sie zusammengestellt.
Spin-wave spectral analysis in crescent-shaped ferromagnetic nanorods
Creators: name: Gołębiewski, Mateusz
name: Reshetniak, Hanna
name: Makartsou, Uladzislau
name: Krawczyk, Maciej
name: Berg, Arjen van den
name: Ladak, Sam
name: Barman, Anjan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The research on the properties of spin waves (SWs) in three-dimensional nanosystems is an innovative idea in the field of magnonics. Mastering and understanding the nature of magnetization dynamics and binding of SWs at surfaces, edges, and in-volume parts of three-dimensional magnetic systems enables the discovery of new phenomena and suggests new possibilities for their use in magnonic and spintronic devices. In this work, we use numerical methods to study the effect of geometry and external magnetic field manipulations on the localization and dynamics of SWs in crescent-shaped (CS) waveguides. It is shown that changing the magnetic field direction in these waveguides breaks the symmetry and affects the localization of eigenmodes with respect to the static demagnetizing field. This in turn has a direct effect on their frequency. Furthermore, CS structures were found to be characterized by significant saturation at certain field orientations, resulting in a cylindrical magnetization distribution. Thus, we present chirality-based nonreciprocal dispersion relations for high-frequency SWs, which can be controlled by the field direction (shape symmetry) and its amplitude (saturation).
title: An analytical model for designing defect-free sheet metal profiles with height-variable cross sections manufactured by Flexible Roller Beading
Creators: name: Wang, Tianbo
name: Groche, Peter
Publisher: name: Springer
Year: 2025

description: Following the industrial change from mass production towards serial customization flexible technologies are becoming increasingly important. Therefore, the novel forming process "flexible roller beading" (FRB) is developed, which enables the continuous production of sheet metal profiles with customizable variable cross-sectional height and exploits the lightweight potential of profile-based constructions. To guarantee the quality and further processability of the profiles, component defects—primarily sheet wrinkling in the profile flange—must be avoided. The occurrence of wrinkling is affected by various geometric parameters of the targeted profile. This makes an empirical determination of the material-dependent process limits inefficient due to the expensive computational times of numerical simulations and effort of experimental test executions. Therefore, a mathematical model is developed which allows the analytical prediction of the process instabilities causing sheet wrinkling. The presented paper includes the description of the mechanical characteristics of FRB based on numerical and experimental investigations. The predictive analytical model derived from these findings determines the maximum longitudinal compressive stress in the profile flange, which is responsible for the wrinkling formation, based on the relevant geometric characteristics. By the comparison of the calculated occurring longitudinal compressive stress with the material-specific critical stress, sheet wrinkling can be predicted and failure-free profile geometries can be efficiently designed. The generality of the analytical model, independent of the profile geometry, is validated by experimental tests.
A computational investigation of nucleation mechanism and polymorph selection in crystallization
Creators: name: Bulutoglu, Pelin S
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Process control and simulation
Chemical engineering not elsewhere classified

description: This thesis demonstrates the use of molecular simulations and specifically multidimensional free energy calculations as a powerful tool to understand non-classical nucleation mechanisms. With a motivation to develop a computational methodology that can predict nucleation rates and identify the kinetically favored polymorph without relying on CNT, two studies have been conducted:
 First, NaCl nucleation from aqueous solution was studied using molecular simulations. By calculating the free energy of nucleation as a function of structure specific nucleus size coordinates, it was shown that at high concentrations, NaCl nucleation occurs through the formation of composite clusters that have a crystalline core surrounded by a layer of amorphous particles. The effect of supersaturation on the mechanism was investigated by rerunning the calculations at a higher concentration and a shift was observed in the nucleation mechanism from single step to 2-step nucleation. The shift was shown to be resulting from a change in the relative stability of the intermediate amorphous solid phase.
 Second, nucleation of the Lennard-Jones (LJ) fluid from the melt was investigated with a focus on the competition between two possible crystal structures. The free energy surface of nucleation, plotted against polymorph-specific nucleus size variables, revealed that polymorph selection in the LJ fluid does not happen during nucleation, but when the emerging clusters are much larger than the critical cluster size, in contrast with the classical nucleation theory assumption. It was observed that the post-nucleation events like crystal growth and polymorphic transformations played a significant role in determining the final structure of the grown crystals. Since a CNT based crystallization model is not able to track the structural changes within the nucleated clusters, a novel population balance modeling framework was proposed. The proposed model connects the structure-specific nucleation rates obtained from atomic-scale simulations with the post-nucleation events and is able to predict the correct polymorphic distribution obtained from 500 nucleation trajectories.
Absence of a BCS-BEC crossover in the cuprate superconductors
Creators: name: Sous, John
name: He, Yu
name: Kivelson, Steven A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We examine key aspects of the theory of the Bardeen-Cooper-Schrieffer (BCS) to Bose-Einstein condensation (BEC) crossover, focusing on the temperature dependence of the chemical potential, $μ$. We identify an accurate method of determining the change of $μ$ in the cuprate high temperature superconductors from angle-resolved-photoemission data (along the "nodal" direction), and show that $μ$ varies by less than a few percent of the Fermi energy over a range of temperatures from far below to several times above the superconducting transition temperature, $T_c$. This shows, unambiguously, that not only are these materials always on the BCS side of the crossover (which is a phase transition in the $d-wave case), but are nowhere near the point of the crossover (where the chemical potential approaches the band bottom).
description: 6 pages, 5 figures
Conflict Management in Romantic Long Distance-Relationships
Creators: name: Naz, Gremil Alessandro Alcazar
Publisher: name: Zenodo
Year: 2019
Subjects: Long-Distance Relationships
Relationship Conflicts
Communication

description: This study sought to understand the conflicts of Filipinos in long-distance relationships (LDRs). Specifically, it aimed to know the conflicts Filipinos in LDRs usually experience, their conflict management styles, and the communication channels they use in managing conflicts. Since the existing theories on conflict management in LDRs are Western, the researcher developed a theory of conflict management among Filipinos in LDRs using the Grounded Theory Method (GTM). Ten Filipinos in LDRs were interviewed. Their narratives were subjected to GTM, and 18 open codes were identified. During the Selective coding, these were pared down to five categories. Their relationships were identified during the theoretical coding, which yielded a grounded theory on conflict management in LDRs. This theory posits that conflicts in the LDR; the reason for the LDR; long-term relationship plans; communication practices; and the values, behaviors, and other attributes of the long-distance couple affect each other. Meanwhile, all of them are shaped by the Filipinos’ concept of romance and love.
Use of Extra Virgin Olive Oil (EVOO) in the treatment of traumatic ulcers. A case report
Creators: name: Sinesi, Antonia
name: Casu, Cinzia
name: Cefola, Savino
name: Damato, Ruggiero
name: Orrù, Germano
Publisher: name: Journal of Biomedical Practitioners
Year: 2020

description: Introduction Extra virgin olive oil (EVOO) is an essential food of the Mediterranean diet (MD) and some countries in the Mediterranean area such as Italy, Spain and Greece represent the largest and most important producers in the world. In Southern Italy, precisely all through the countryside of the north of Bari in Apulia, is produced a particular type of extra virgin olive oil by cultivar "Coratina" characterized by the presence of a high content of polyphenols, the highest compared to other cultivars (1) and very rich in biocompounds. Since the last century, it was customary for the inhabitants of the area to use it for the treatment of various diseases: burns, trauma, cheilitis and processes inflammation of various kinds. Over time, this practice has gradually disappeared and almost forgotten. In recent decades, numerous studies have been published which have documented most of the beneficial effects of the Mediterranean diet in promoting human health. Its beneficial effects can largely be attributed to the consumption of extra virgin olive oil (EVOO) (2). The consumption of extra virgin olive oil is able to reduce lipid and DNA oxidation, improve the lipid profile and insulin resistance, endothelial dysfunction, inflammation, reduce blood pressure in hypertensive patients and modify the response of the immune system (3, 4). Despite its extensive use and although numerous studies on extra virgin olive oil have shown its remarkable effectiveness in healing skin burns (5, 6, 7), bedsores (8) and foot wounds in the diabetic patient (9), no scientific studies have been proposed for the treatment of traumatic ulcers in the oral cavity. In this case - report, we decided to use EVOO as a therapeutic aid in the treatment of mucosal oral injury in a prosthesis on implant-bearer patient. Key words: extra virgin olive oil, polyphenols, “Coratina” cultivar, traumatic ulcers.
description: Journal of Biomedical Practitioners, Vol 4 No 1 (2020)
Latent class cluster analysis of symptom ratings identifies distinct subgroups within the clinical high risk for psychosis syndrome
Creators: name: Tsuang, M.T.
name: Woods, S.W.
name: Cornblatt, B.A.
name: Bearden, C.E.
name: Addington, J.
name: Mathalon, D.H.
name: Walker, E.F.
name: Ryan, A.T.
name: McGlashan, T.H.
name: Cadenhead, K.S.
name: Perkins, D.O.
name: Seidman, L.J.
name: Cannon, T.D.
Publisher: name: Elsevier B.V.
Year: 2018

description: The clinical-high-risk for psychosis (CHR-P) syndrome is heterogeneous in terms of clinical presentation and outcomes. Identifying more homogenous subtypes of the syndrome may help clarify its etiology and improve the prediction of psychotic illness. This study applied latent class cluster analysis (LCCA) to symptom ratings from the North American Prodrome Longitudinal Studies 1 and 2 (NAPLS 1 and 2). These analyses produced evidence for three to five subgroups within the CHR-P syndrome. Differences in negative and disorganized symptoms distinguished among the subgroups. Subgroup membership was found to predict conversion to psychosis. The authors contrast the methods employed within this study with previous attempts to identify more homogenous subgroups of CHR-P individuals and discuss how these results could be tested in future samples of CHR-P individuals.
The Early Psychosis Screener (EPS): Item development and qualitative validation
Creators: name: Woods, S.W.
name: Perkins, D.O.
name: First, M.B.
name: Walker, E.F.
name: Nieri, J.M.
name: Brodey, B.B.
name: Brodey, I.S.
name: Putz, J.
name: Walsh, B.
name: Nunn, M.B.
name: Addington, J.
Publisher: name: Elsevier B.V.
Year: 2018

description: A panel of experts assembled and analyzed a comprehensive item bank from which a highly sensitive and specific early psychosis screener could be developed. Twenty well-established assessments relating to the prodromal stage, early psychosis, and psychosis were identified. Using DSM-5 criteria, we identified the core concepts represented by each of the items in each of the assessments. These granular core concepts were converted into a uniform set of 490 self-report items using a Likert scale and a ‘past 30 days’ time frame. Partial redundancy was allowed to assure adequate concept coverage. A panel of experts and TeleSage staff rated these items and eliminated 189 items, resulting in 301 items. The items were subjected to five rounds of cognitive interviewing with 16 individuals at clinically high risk for psychosis and 26 community mental health center patients. After each round, the expert panel iteratively reviewed, rated, revised, added, or deleted items to maximize clarity and centrality to the concept. As a result of the interviews, 36 items were revised, 52 items were added, and 205 items were deleted. By the last round of cognitive interviewing, all of the items were clearly understood by all participants. In future work, responses to the final set of 148 items and machine learning techniques will be used to quantitatively identify the subset of items that will best predict clinical high-risk status and conversion.
Learning Management Model through Wisdom Conservation Project-base-Learning of Student at the Diploma Level in Polytechnic College in the Northeast Region
Creators: name: Jongjin Boonchaisaen
Publisher: name: DR.KEN Institute of Academic Development and Promotion
Year: 2022
Subjects: Management Project-base-Learning Management
Diploma
Polytechnic College

description: Interdisciplinary Academic and Research Journal, 2, 6, 95-114