cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Implementation fidelity in parent-implemented interventions for stuttering
Creators: name: Bergþórsdóttir, Íris Ö.
name: Crowe, Kathryn
name: Einarsdóttir, Jóhanna T.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Knowledge of the fidelity with which interventions are delivered in research studies is crucial to meaningful examination of intervention impact. This paper presents a review of fidelity implementation (FOI) measurements in interventions jointly delivered by speech-language pathologists (SLP) and parents in research for preschool-aged children who stutter (CWS). Four key FOI components were examined: dosage, adherence, quality, responsiveness. Thirty-six studies met the inclusion criteria for this study. Articles were published between 1990 and 2020 described nine different interventions and examined CWS aged 2–6 years. No study reported all FOI components in both the clinical and the home setting and five did not report on any FOI component in either setting. The number of FOI components reported ranged from 0 to 4 in both clinical (M = 1.5) and home (M = 1.0) settings. Across studies, dosage was most often reported (n = 27, 75.0%) and responsiveness was least often reported (n = 16, 44.4%). The number of FOI components reported in articles did not increase over time, although a trend towards greater reporting in recent years was observed. Poor reporting of FOI in intervention research presents a serious methodological concern that impacts the ability of clinicians and researchers to interpret the findings of these studies. Rigorous measurement and reporting of FOI in future intervention studies is required in order to better inform evidence-based practices for interventions with CWS.
General ether theory
Creators: name: Schmelzer, Ilja
Publisher: name: Weierstrass Institute
Year: 2000
Subjects: subject: quantum gravity
subject: Bell's inequality
subject: alternative theories of gravity
subject: 83D05
subject: 83C45

description: The paper is an introduction into General Ether Theory (GET). We start with few assumptions about an universal "ether" in a Newtonian space-time which fulfils ∂tρ + ∂i (ρvi) = 0 ∂t(ρvj)+∂i(ρvivj+pij = 0 For an "effective metric" gµν we derive a Lagrangian where the Einstein equivalence principle is fulfilled: L = LGR - (8πG)-1(Υg00 - Ξ(g11 + g22 + g33))√-g We consider predictions (stable frozen stars instead of black holes, big bounce instead of big bang singularity, a dark matter term), quantization (regularization by an atomic ether, superposition of gravitational fields), related methodological questions (covariance, EPR criterion, Bohmian mechanics).
Clinical effectiveness of nirmatrelvir plus ritonavir in the treatment of COVID-19 in patients with cirrhosis
Creators: name: Hsu, Wan-Hsuan
name: Shiau, Bo-Wen
name: Liu, Ting-Hui
name: Wu, Jheng-Yan
name: Tsai, Ya-Wen
name: Huang, Po-Yu
name: Chuang, Min-Hsiang
name: Lai, Chih-Cheng
name: Chen, Chi-Hsing
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Cancer

description: This retrospective cohort study assessed the clinical effectiveness of nirmatrelvirplus ritonavir (NMV-r) in treating COVID-19 in patients with liver cirrhosis(LC). The data of non-hospitalized adult patients with LC who had COVID-19 were selected from the TriNetX platform for the period between 1 March 20201 March 2020, and 31 December 202231 December 2022. Propensity score matching was used to match patients receiving NMV-r (theNMV-r group) with those not receiving NMV-r (the control group). Hazard ratios(HRs) along with 95% confidence intervals (CIs) for the primary outcome – a composite of all-cause hospitalization or mortality during the 30-day follow-up period – were calculated and compared. Two cohorts of 2,369 patients each with balanced baseline characteristics were identified.During the follow-up period, the NMV-r group had a lower risk of all-cause hospitalization or mortality (HR, 0.642;95% CI, 0.503–0.819) than did the control group.NMV-r was also associated with a reduced risk of individual all-cause hospitalization (HR 0.681, 95% CI 0.530–0.876])and all-cause mortality (HR, 0.270; 95% CI,0.129–0.562). This association was consistently observed in the subgroups of age, sex, vaccination status, and LC severity. NMV-r can reduce all-cause hospitalization and mortality among patients with LC who have COVID-19.
Atmospheric pressure and molecular cloud formation in early-type galaxies
Creators: name: Babyk, Iurii
name: McNamara, Brian
name: Nulsen, Paul
name: Russell, Helen
name: Edge, Alastair
name: Blitz, Leo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A strong correlation between atmospheric pressure and molecular gas mass is found in central cluster galaxies and early-type galaxies. This trend and a similar trend with atmospheric gas density would naturally arise if the molecular clouds condensed from hot atmospheres. Limits on the ratio of molecular to atomic hydrogen in these systems exceed unity. The data are consistent with ambient pressure being a significant factor in the rapid conversion of atomic hydrogen into molecules as found in normal spiral galaxies.
description: 7 pages, 4 figures
Perspectives on the pure spinor superfield formalism
Creators: name: Eager, Richard
name: Hahner, Fabian
name: Saberi, Ingmar
name: Williams, Brian R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81T60, 81R25, 17B55, 17B81

description: In this note, we study, formalize, and generalize the pure spinor superfield formalism from a rather nontraditional perspective. To set the stage, we review the notion of a multiplet for a general super Lie algebra, working in the context of the BV and BRST formalisms. Building on this, we explain how the pure spinor superfield formalism can be viewed as constructing a supermultiplet out of the input datum of an equivariant graded module over the ring of functions on the nilpotence variety. We use the homotopy transfer theorem and other computational techniques from homological algebra to relate these multiplets to more standard component-field formulations. Physical properties of the resulting multiplets can then be understood in terms of algebrogeometric properties of the nilpotence variety. We illustrate our discussion with many examples in various dimensions.
description: v2: updated grant information. 66 pages, 27 tables. Comments welcome!
Singularly perturbed partly dissipative reaction-diffusion systems in case of exchange of stabilities
Creators: name: Butuzov, Valentin F.
name: Nefedov, Nikolai N.
name: Schneider, Klaus R.
Publisher: name: Weierstrass Institute
Year: 2000
Subjects: subject: Initial boundary value problem
subject: singularly perturbed partly dissipative reaction-diffusion system
subject: exchange of stabilities
subject: asymptotic lower and upper solutions
subject: 35B25
subject: 35K57

description: We consider the singularly perturbed partly dissipative reaction-diffusion system ε2 (∂u ⁄ ∂t - ∂2u ⁄ ∂x2 = g(u,v,x,t,ε), ∂v ⁄ ∂t = ƒ(u,v,x,t,ε) under the condition that the degenerate equation g(u,v,t,0) = 0 has two solutions u = φi(v,x,t), i = 1,2, that intersect (exchange of stabilities). Our main result concerns existence and asymptotic behavior in ε of the solution of the initial boundary value problem under consideration. The proof is based on the method of asymptotic lower and upper solutions.
Identification of antibiotic consumption targets for the management of Clostridioides difficile infection in hospitals- a threshold logistic modelling approach
Creators: name: Aldeyab, Mamoon A.
name: Bond, Stuart E.
name: Gould, Ian
name: Lee-Milner, Jade
name: Spencer-Jones, Joseph J.
name: Guleri, Achyut
name: Sadeq, Adel
name: Jirjees, Feras
name: Lattyak, William J.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: This study aims to demonstrate the utility of a threshold logistic approach to identifying thresholds for specific antibiotic use associated with Clostridioides difficile infection (CDI) in an English teaching hospital. A combined approach of nonlinear modeling and logistic regression, named threshold logistic, was used to identify thresholds and risk scores in hospital-level antibiotic use associated with hospital-onset, healthcare-associated (HOHA) CDI cases. Using a threshold logistic regression approach, an incidence greater than 0.2645 cases/1000 occupied bed-days (OBD; 85th percentile) was determined as the cutoff rate to define a critical (high) incidence rate of HOHA CDI. Fluoroquinolones and piperacillin-tazobactam were found to have thresholds at 84.8 and 54 defined daily doses (DDD)/1000 OBD, respectively. Analysis of data allowed calculating risk scores for HOHA CDI incidence rates exceeding the 85th percentile, i.e. entering critical incidence level. The threshold-logistic model also facilitated performing ‘what-if scenarios’ on future values of fluoroquinolones and piperacillin-tazobactam use to understand how HOHA CDI incidence rates may be affected. Using threshold logistic analysis, critical incidence levels and antibiotic use targets to control HOHA CDI were determined. Threshold logistic models can be used to inform and enhance the effective design and implementation of antimicrobial stewardship programs.
Giant proximity exchange and flat Chern band in 2D magnet-semiconductor heterostructures
Creators: name: Paul, Nisarga
name: Zhang, Yang
name: Fu, Liang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Van der Waals (vdW) heterostructures formed by two-dimensional magnets and semiconductors have provided a fertile ground for fundamental science and for spintronics. We present first-principles calculations finding a proximity exchange splitting of 14 meV equivalent to an effective Zeeman field of 120 T in the vdW magnet-semiconductor heterostructure MoS$_2$/CrBr$_3$, leading to a 2D spin-polarized half-metal with carrier densities ranging up to $10^{13}$ cm$^{-2}$. We consequently explore the effect of large exchange coupling on the electronic bandstructure when the magnetic layer hosts chiral spin textures such as skyrmions. A flat Chern band is found at a "magic" value of magnetization $\overline{m} \sim 0.2$ for Schrödinger electrons, and it generally occurs for Dirac electrons. The magnetic proximity induced anomalous Hall effect enables transport-based detection of chiral spin textures, and flat Chern bands provides an avenue for engineering various strongly correlated states.
description: 5+4 pages, 7 figures; v2 accepted to Science Advances
Whistleblower protection in the digital age -- why 'anonymous' is not enough. From technology to a wider view of governance
Creators: name: Berendt, Bettina
name: Schiffner, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: When technology enters applications and processes with a long tradition of controversial societal debate, multi-faceted new ethical and legal questions arise. This paper focusses on the process of whistleblowing, an activity with large impacts on democracy and business. Computer science can, for the first time in history, provide for truly anonymous communication. We investigate this in relation to the values and rights of accountability, fairness and data protection, focusing on opportunities and limitations of the anonymity that can be provided computationally; possible consequences of outsourcing whistleblowing support; and challenges for the interpretation and use of some relevant laws. We conclude that to address these questions, whistleblowing and anonymous whistleblowing must rest on three pillars, forming a 'triangle of whistleblowing protection and incentivisation' that combines anonymity in a formal and technical sense; whistleblower protection through laws; and other norms and practices including organisational error culture.
description: 16 pages, 1 figure
Production of time reference in Turkish Broca’s aphasia: The effect of morphological complexity
Creators: name: Kurada, Hazel Zeynep
name: Aydın, Özgür
name: Köse, Ayşen
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: In PWA (people with aphasia) difficulties with sentences that refer to the past compared to non-past time reference have been shown for many languages, including Turkish. However, the impact of morphological complexity on past time reference ability in production has not yet been reported for Turkish-speaking PWA. Turkish, where verb forms have complex inflectional paradigms and exhibit overt and non-overt morphology, facilitates the examination of the effects of morphological complexity. The current study has two objectives: 1) to investigate whether the morphological complexity of the verb form affects time reference production of Turkish-speaking PWA and 2) to provide analysis for the error patterns discovered. Seventeen Turkish individuals with Broca’s aphasia who were matched in age with a control group of 17 neurologically intact Turkish individuals were tested with a picture sentence completion task. Test conditions were present progressive, simple past, past perfect, past progressive, and future tense. The task required the participants to complete each sentence frame with a verb. Our findings show that Turkish-speaking PWA were more successful in producing verb forms referring to non-past than verb forms referring to the past time reference. The current study supports previous findings that past is more difficult than non-past time reference for Turkish-speaking PWA. In terms of morphological complexity, we find that PWA were more impaired when producing morphologically complex verb forms rather than morphologically simple forms. We argue that these impairments lie in the realization of overt morphology.
Ανδρέας Σπ. Μιχαλακόπουλος (1875-1938): H ζωή, το έργο και η εποχή του
Creators: name: Πέτροβας, Νικόλαος
Publisher: name: Πανεπιστήμιο Πελοποννήσου
Year: 2023
Subjects: subject: Μιχαλακόπουλος , Ανδρέας , 1875-1938
subject: Πρωθυπουργοί -- Ελλάδα -- Βιογραφία
subject: Ελλάδα -- Πολιτική και διακυβέρνηση -- 20ος αιώνας
subject: Ανδρέας Μιχαλακόπουλος
subject: Πρωθυπουργός
subject: Πάτρα
subject: Ελευθέριος Βενιζέλος
subject: Εθνικός Διχασμός
subject: Αγροτική Μεταρρύθμιση
subject: Δικτατορία 1936-1940
subject: Andreas Michalakopoulos
subject: Prime Minister
subject: Patras
subject: Eleftherios Venizelos
subject: National Schism
subject: Agrarian Reform
subject: Dictatorship 1936-1940

description: Ο Ανδρέας Μιχαλακόπουλος υπήρξε ένας από τους πιο σημαντικούς πολιτικούς στη νεότερη ιστορία της Ελλάδας. Ξεκίνησε ως νομικός από την πόλη καταγωγής του, την Πάτρα, συνέχισε ως πολιτικός στο πλευρό του Ελευθερίου Βενιζέλου λαμβάνοντας σημαντικές θέσεις στις κυβερνήσεις του κι έφθασε να εκλεχθεί ως Πρωθυπουργός της Ελλάδας. Υπήρξε υπέρμαχος του Ελληνικού Κοινοβουλευτικού Πολιτεύματος, το οποίο υποστήριζε σε όλη τη διάρκεια της ζωής του και εξαιτίας αυτού πέθανε άδικα ως εξόριστος κατά τα χρόνια της Δικτατορίας του Ιωάννη Μεταξά.
Phenotypic, genotypic, and metabolic resistance mechanisms of ESKAPE bacteria to chemical disinfectants: a systematic review and meta-analysis
Creators: name: Lorestani, Roya Chegene
name: Shojaeian, Ali
name: Rostamian, Mosayeb
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: The presence of resistant ESKAPE pathogens to antimicrobials including chemical disinfectants (ChDs) is a serious threat to public health worldwide. In the present study, we systematically reviewed published reports on mechanisms beyond ChD resistance of ESKAPE bacteria. Several databases without date limitations were searched. Studies focused on the ChD resistance/tolerance mechanisms of ESKAPE bacteria were included. Meta-analysis was done to assess the frequency of tolerance and genes in ESKAPE clinical isolates. By screening of initial 6733 records, finally, 41 studies were included. The overall tolerance to at least one ChD was 48.6%. Pseudomonas aeruginosa and Acinetobacter baumannii were highly ChD-resistant. In several studies, phenotypic changes including changes in general morphology, pump function, cell surface, and membrane, as well as metabolic changes were observed after ChD addition. The resistance gene frequency was 70.2% for norfloxacin efflux pump genes, 40.6% for qac major facilitator superfamily genes, and 22.2% for qac small multidrug resistance genes. We systematically reviewed the effect of various mechanisms in the resistance process of ESKAPE bacteria to ChDs. However, except for the impact of genes, the numbers of studies investigating other mechanisms were very limited, demanding carrying out more studies in this field.
Two-dimensional Bose-Einstein condensate under pressure
Creators: name: Cho, Wonyoung
name: Kim, Sang-Woo
name: Park, Jeong-Hyuck
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Evading the Mermin-Wagner-Hohenberg no-go theorem and revisiting with rigor the ideal Bose gas confined in a square box, we explore a discrete phase transition in two spatial dimensions. Through both analytic and numerical methods we verify that thermodynamic instability emerges if the number of particles is sufficiently yet finitely large: specifically $N\geq 35131$. The instability implies that the isobar of the gas zigzags on the temperature-volume plane, featuring supercooling and superheating phenomena. The Bose-Einstein condensation then can persist from absolute zero to the superheating temperature. Without necessarily taking the large $N$ limit, under constant pressure condition, the condensation takes place discretely both in the momentum and in the position spaces. Our result is applicable to a harmonic trap. We assert that experimentally observed Bose-Einstein condensations of harmonically trapped atomic gases are a first-order phase transition which involves a discrete change of the density at the center of the trap.
description: 17 pages, 4 figures; version expanded, To appear in New Journal of Physics
Onboarding von Auszubildenden zu Fachangestellten für Medien- und Informationsdienste in Niedersachsen
Creators: name: Hallaschka, Ulrike
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: Titelei
subject: Berliner Handreichungen zur Bibliotheks- und Informationswissenschaft
subject: Institut für Bibliotheks- und Informationswissenschaft
subject: Humboldt-Universität zu Berlin
subject: 020 Bibliotheks- und Informationswissenschaften

description: Das Ziel der vorliegenden Masterarbeit war es, Handlungsempfehlungen für das Onboarding von Auszubildenden zu Fachangestellten für Medien- und Informationsdienste zu liefern. Dazu wurden 46 Auszubildende aus Niedersachsen in einer Umfrage zu ihren Erfahrungen des eigenen Onboardings befragt. Die Ergebnisse bestätigten zum großen Teil die Annahmen bei Moser und Lohaus. Folgende Schlussfolgerungen gehen jedoch nach der Auswertung der Umfrage über die theoretischen Annahmen hinaus: Maßnahmen jedweder Art werden als hilfreich empfunden, um gut in die Ausbildung einsteigen zu können. Es sollte auf Kommunikation insbesondere von expliziten sowie impliziten Regeln Wert gelegt werden sowie zum gegenseitigen Feedback angeregt werden. Onboarding kann sich positiv auf die Identifikation mit dem Ausbildungsbetrieb auswirken. Die in den Anhängen erarbeiteten Checklisten, Muster-Ablaufpläne sowie - begrüßungsschreiben können hilfreich für die Gestaltung des Ausbildungsbeginns sein. Die Masterarbeit ist sowohl für (neue) Ausbilder*innen, Ausbildungsbeauftrage sowie weitere Interessierte des ABD-Bereichs interessant.
Perspectives in Small Systems : Heavy Quarks and HBT Radii
Creators: name: Das, Debasish
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences
subject: 81Txx

description: Recent observations of QGP-like phenomena in small collision systems like p+p and p+A collisions have questioned our understanding of the basic paradigms of high energy heavy-ion physics. A brief discussion of these new aspects in small systems which in turn influence our understanding of hard probes like heavy quarks has been provided. Furthermore, a closer observation of the two-particle Hanbury-Brown Twiss (HBT) interferometry measurements provide new insights in our understanding of medium-like phenomena in small systems. An outlook of future goals and measurements is also made.
description: Published in Nuclear Physics, Section A, 2021
Identification of self-citations in Google Scholar author profiles
Creators: name: Martín-Martín, Alberto
Publisher: name: Zenodo
Year: 2022

description: In this study we only apply the script to one profile. Therefore the results of the analysis regarding the efficacy of the scripts to detect all self-citations are not generalizable. These results provide, however, some useful information that can help us improve the script in the future. Most of the self-citations that are not detected by the script are co-author self-citations, which we knew the script could not detect. For these cases, several approaches could be followed in the future: If the profile of our focus author includes a list of co-authors , the list of documents in the profile of each co-author could be downloaded, and then document IDs could be compared. Author lists in the list of publications of our focus author could be compared with author lists in the citing publications. The limitation with this approach is that author names are not standardised in Google Scholar, and that author lists are often incomplete in Google Scholar results pages. If we compare the self-citation rate computed using Google Scholar for the author in this study (9.9% if we consider only author self-citations, and 12.7% if we also consider co-author self-citations) and compare it with those available in other data sources, the results are quite similar. In Web of Science, the author had received a total of 1,517 citations at the same time that the data for this study was collected, 1,380 excluding self-citations, resulting in a self-citation rate of 9.03% (Web of Science only computes author self-citations when using its citation report functionality). In Scopus, the author had received a total of 1,554 citations, 1,410 excluding author self-citations (9.3%), and 1,318 excluding co-author self-citations as well (15,18%). Future studies could test whether these similarities hold in large samples of author profiles.
Two-Part Reconstruction with Noisy-Sudocodes
Creators: name: Ma, Yanting
name: Baron, Dror
name: Needell, Deanna
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We develop a two-part reconstruction framework for signal recovery in compressed sensing (CS), where a fast algorithm is applied to provide partial recovery in Part 1, and a CS algorithm is applied to complete the residual problem in Part 2. Partitioning the reconstruction process into two complementary parts provides a natural trade-off between runtime and reconstruction quality. To exploit the advantages of the two-part framework, we propose a Noisy-Sudocodes algorithm that performs two-part reconstruction of sparse signals in the presence of measurement noise. Specifically, we design a fast algorithm for Part 1 of Noisy-Sudocodes that identifies the zero coefficients of the input signal from its noisy measurements. Many existing CS algorithms could be applied to Part 2, and we investigate approximate message passing (AMP) and binary iterative hard thresholding (BIHT). For Noisy-Sudocodes with AMP in Part 2, we provide a theoretical analysis that characterizes the trade-off between runtime and reconstruction quality. In a 1-bit CS setting where a new 1-bit quantizer is constructed for Part 1 and BIHT is applied to Part 2, numerical results show that the Noisy-Sudocodes algorithm improves over BIHT in both runtime and reconstruction quality.
description: 23 pages, 7 figures, to appear in IEEE Transactions on Signal Processing
Impurity Green's function of a one-dimensional Fermi-gas
Creators: name: Gamayun, O.
name: Pronko, A. G.
name: Zvonarev, M. B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider a one-dimensional gas of spin-1/2 fermions interacting through $δ$-function repulsive potential of an arbitrary strength. For the case of all fermions but one having spin up, we calculate time-dependent two-point correlation function of the spin-down fermion. This impurity Green's function is represented in the thermodynamic limit as an integral of Fredholm determinants of integrable linear integral operators.
description: 21 pages, no figures; v2: references and comments added
High-resolution search for the $Θ^{+}$ pentaquark via a pion-induced reaction at J-PARC
Creators: name: PARC E19 Collaboration
name: Moritsu, M.
name: Adachi, S.
name: Agnello, M.
name: Ajimura, S.
name: Aoki, K.
name: Bhang, H. C.
name: Bassalleck, B.
name: Botta, E.
name: Bufalino, S.
name: Chiga, N.
name: Ekawa, H.
name: Evtoukhovitch, P.
name: Feliciello, A.
name: Fujioka, H.
name: Hayakawa, S.
name: Hiruma, F.
name: Honda, R.
name: Hosomi, K.
name: Ichikawa, Y.
name: Ieiri, M.
name: Igarashi, Y.
name: Imai, K.
name: Ishibashi, N.
name: Ishimoto, S.
name: Itahashi, K.
name: Iwasaki, R.
name: Joo, C. W.
name: Kanatsuki, S.
name: Kim, M. J.
name: Kim, S. J.
name: Kiuchi, R.
name: Koike, T.
name: Komatsu, Y.
name: Kulikov, V. V.
name: Marcello, S.
name: Masumoto, S.
name: Matsumoto, Y.
name: Matsuoka, K.
name: Miwa, K.
name: Nagae, T.
name: Naruki, M.
name: Niiyama, M.
name: Noumi, H.
name: Nozawa, Y.
name: Ota, R.
name: Ozawa, K.
name: Saito, N.
name: Sakaguchi, A.
name: Sako, H.
name: Samoilov, V.
name: Sato, M.
name: Sato, S.
name: Sato, Y.
name: Sawada, S.
name: Sekimoto, M.
name: Shirotori, K.
name: Sugimura, H.
name: Suzuki, S.
name: Takahashi, H.
name: Takahashi, T.
name: Takahashi, T. N.
name: Tamura, H.
name: Tanaka, T.
name: Tanida, K.
name: Tokiyasu, A. O.
name: Tomida, N.
name: Tsamalaidze, Z.
name: Ukai, M.
name: Yagi, K.
name: Yamamoto, T. O.
name: Yang, S. B.
name: Yonemoto, Y.
name: Yoon, C. J.
name: Yoshida, K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The pentaquark $Θ^+$ has been searched for via the $π^-p \to K^-X$ reaction with beam momenta of 1.92 and 2.01 GeV/$c$ at J-PARC. A missing mass resolution of 2 MeV (FWHM) was achieved but no sharp peak structure was observed. The upper limits on the production cross section averaged over the scattering angle from 2$^{\circ}$ to 15$^{\circ}$ in the laboratory frame were found to be less than 0.28 $μ$b/sr at the 90\% confidence level for both the 1.92- and 2.01-GeV/$c$ data. The systematic uncertainty of the upper limits was controlled within 10\%. Constraints on the $Θ^+$ decay width were also evaluated with a theoretical calculation using effective Lagrangian. The present result implies that the width should be less than 0.36 and 1.9 MeV for the spin-parity of $1/2^+$ and $1/2^-$, respectively.
description: 12 pages, 9 figures; published version
Nonlocal correlations induced by Hund's coupling: a cluster DMFT study
Creators: name: Nomura, Yusuke
name: Sakai, Shiro
name: Arita, Ryotaro
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study spatial correlation effects in multiorbital systems, especially in a paramagnetic metallic state subject to Hund's coupling. We apply a cluster extension of the dynamical mean-field theory (DMFT) to the three-orbital Hubbard model away from half filling, where previous single-site DMFT studies revealed that local correlation effects caused by Hund's coupling bring about unusual strongly-correlated metallic behaviors. We find that Hund's coupling significantly affects the nonlocal correlations, too; it strongly modulates the electron distribution in the momentum space so as to make a momentum region almost half-filled and hence strongly correlated. It leads to an anomalous electronic state distinct both from the Fermi liquid and the Mott insulator. We identify the mechanism of the anomalous state with the intersite ferromagnetic correlations induced by Hund's coupling.
description: 6pages, 4 figures
Robust Multi-Robot Trajectory Optimization Using Alternating Direction Method of Multiplier
Creators: name: Ni, Ruiqi
name: Pan, Zherong
name: Gao, Xifeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: We propose a variant of alternating direction method of multiplier (ADMM) to solve constrained trajectory optimization problems. Our ADMM framework breaks a joint optimization into small sub-problems, leading to a low iteration cost and decentralized parameter updates. Starting from a collision-free initial trajectory, our method inherits the theoretical properties of primal interior point method (P-IPM), i.e., guaranteed collision avoidance and homotopy preservation throughout optimization, while being orders of magnitude faster. We have analyzed the convergence and evaluated our method for time-optimal multi-UAV trajectory optimizations and simultaneous goal-reaching of multiple robot arms, where we take into consider kinematics-, dynamics-limits, and homotopy-preserving collision constraints. Our method highlights an order of magnitude's speedup, while generating trajectories of comparable qualities as state-of-the-art P-IPM solver.
Testing cosmic geometry without dynamic distortions using voids
Creators: name: Hamaus, Nico
name: Sutter, P. M.
name: Lavaux, Guilhem
name: Wandelt, Benjamin D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We propose a novel technique to probe the expansion history of the Universe based on the clustering statistics of cosmic voids. In particular, we compute their two-point statistics in redshift space on the basis of realistic mock galaxy catalogs and apply the Alcock-Paczynski test. In contrast to galaxies, we find void auto-correlations to be marginally affected by peculiar motions, providing a model-independent measure of cosmological parameters without systematics from redshift-space distortions. Because only galaxy-galaxy and void-galaxy correlations have been considered in these types of studies before, the presented method improves both statistical and systematic uncertainties on the product of angular diameter distance and Hubble rate, furnishing the potentially cleanest probe of cosmic geometry available to date.
description: 17 pages, 3 figures. Matches JCAP published version
title: Αλληλεπίδραση ασθενών με γιατρούς με χρήση εφαρμογής κινητού
title: Interaction between patients and doctors using mobile application
titleType: AlternativeTitle
Creators: name: Παγώνης, Παναγιώτης
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Mobile application
subject: Doctor
subject: Patients
subject: Chat messages

description: Ένα συχνό θέμα που αντιμετωπίζει πολύς κόσμος που βρίσκεται σε ανάγκη ιατρικής περίθαλψης, είναι η αναζήτηση και επικοινωνία με εξειδικευμένους γιατρούς. Ο σκοπός της μεταπτυχιακής διατριβής είναι η ανάπτυξη μίας ιατρικής εφαρμογής για κινητά, για τη διευκόλυνση επικοινωνίας μεταξύ γιατρών και ασθενών. Η εφαρμογή υποστηρίζει τη λειτουργία δημιουργίας λογαριασμού χρήστη και αναζήτησης γιατρού από την πλευρά του ασθενή και δημιουργίας λογαριασμού χρήστη από την πλευρά του γιατρού. Η επικοινωνία μεταξύ των δύο πλευρών επιτυγχάνεται με τη δημιουργία επαφών και εν συνεχεία με την ανταλλαγή μηνυμάτων, προσφέροντας στον ασθενή άμεση πρόσβαση σε ιατρική φροντίδα.
ACNet: Approaching-and-Centralizing Network for Zero-Shot Sketch-Based Image Retrieval
Creators: name: Ren, Hao
name: Zheng, Ziqiang
name: Wu, Yang
name: Lu, Hong
name: Yang, Yang
name: Shan, Ying
name: Yeung, Sai-Kit
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The huge domain gap between sketches and photos and the highly abstract sketch representations pose challenges for sketch-based image retrieval (\underline{SBIR}). The zero-shot sketch-based image retrieval (\underline{ZS-SBIR}) is more generic and practical but poses an even greater challenge because of the additional knowledge gap between the seen and unseen categories. To simultaneously mitigate both gaps, we propose an \textbf{A}pproaching-and-\textbf{C}entralizing \textbf{Net}work (termed "\textbf{ACNet}") to jointly optimize sketch-to-photo synthesis and the image retrieval. The retrieval module guides the synthesis module to generate large amounts of diverse photo-like images which gradually approach the photo domain, and thus better serve the retrieval module than ever to learn domain-agnostic representations and category-agnostic common knowledge for generalizing to unseen categories. These diverse images generated with retrieval guidance can effectively alleviate the overfitting problem troubling concrete category-specific training samples with high gradients. We also discover the use of proxy-based NormSoftmax loss is effective in the zero-shot setting because its centralizing effect can stabilize our joint training and promote the generalization ability to unseen categories. Our approach is simple yet effective, which achieves state-of-the-art performance on two widely used ZS-SBIR datasets and surpasses previous methods by a large margin.
description: the paper is accepted by IEEE Transactions on Circuits and Systems for Video Technology, please refer https://ieeexplore.ieee.org/document/10052737 for an updated version
title: Ableitung von Klimaindizes und Etablierung künftiger Entwicklungskorridore potentieller Steinschlagereignisse entlang des Schienennetzes der ÖBB Infrastruktur AG
Creators: name: Wally, Christian
Year: 2021

description: Steinschlag und Felssturz sind Naturgefahrenprozesse, die vielfältige Auswirkungen auf Infrastrukturanlagen im Alpenraum haben. Die verfügbare Vielfalt an Schutzmaßnahmen kann besonders effizient eingesetzt werden, wenn die Frequenz des Auftretens auf die Lebensdauer der Maßnahme abgeschätzt werden kann. Für einen vorliegenden Datensatz vergangener Ereignisse entlang des österreichischen Schienennetzes werden Zeitserien meteorologischer Parameter (Prädiktoren) ermittelt, aus denen sich mithilfe eines empirical orthogonal functions-Ansatzes (EOF) charakteristische Muster (Climate Indices) berechnen lassen. In der folgenden Validierungsphase werden verschiedene Prädiktorensets verglichen, wobei sich eine Kombination aus täglicher Niederschlagssumme und Minimumtemperatur als praktikabel erweist. Darauf aufbauend wird das Potential für das Auftreten von Steinschlagereignissen bis 2100 berechnet, indem das Auftreten ähnlicher Indizes in GCM-Projektionen, die mithilfe der Analogmethode auf regionale Skala gebracht wurden gesucht wird. Der resultierende Klimarisikoindex weist einen leicht negativen Trend für Felssturzgefahr entlang des Bahnnetzes in der alpinen Region Österreichs auf.
description: Rockfall is a natural hazard process, that affects infrastructure in the alpine region in many ways. Protection measures can be applied more efficiently when the potential for hazard occurence can be estimated at least for the lifetime of the measure. Using a dataset of historical events along the Austrian railnet timeseries of meteorological parameters are determined to detect characteristical patterns (Climate Indices) for rockfall occurence using an empirical orthogonal functions (EOF) approach. The next step is validation, where a set of daily precipitation sum and minimum temperature performs in a way, so that it is assumed to be a suitable predictor. Finally the potential for rockfall occurence until 2100 is determined from GCM projections that have been downscaled to local scale using the analog method. The resulting future climate risk index shows a slightly negative trend for hazard development along the railnet in the alpine region of Austria.
Excited state entanglement in one dimensional quantum critical systems: Extensivity and the role of microscopic details
Creators: name: Pálmai, T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study entanglement via the subsystem purity relative to bipartitions of arbitrary excited states in (1+1)-dimensional conformal field theory, equivalent to the scaling limit of one dimensional quantum critical systems. We compute the exact subpurity as a function of the relative subsystem size for numerous excited states in the Ising and three-state Potts models. We find that it decays exponentially when the system and the subsystem sizes are comparable until a saturation limit is reached near half-partitioning, signaling that excited states are maximally entangled. The exponential behavior translates into extensivity for the second Rényi entropy. Since the coefficient of this linear law depends only on the excitation energy, this result shows an interesting, new relationship between energy and quantum information and elucidates the role of microscopic details.
description: 4.5 pages, 2 figures. v2: results unchanged but the text is completely rewritten and many aspects are clarified. Version accepted to PRB as Rapid Communication
Axion Effective Action
Creators: name: Quevillon, Jérémie
name: Smith, Christopher
name: Vuong, Pham Ngoc Hoa
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we discuss the construction of Effective Field Theories (EFTs) in which a chiral fermion, charged under both gauge and global symmetries, is integrated out. Inspired by typical axion models, these symmetries can be spontaneously broken, and the global ones might also be anomalous. In this context, particular emphasis is laid on the derivative couplings of the Goldstone bosons to the fermions, as these lead to severe divergences and ambiguities when building the EFT. We show how to precisely solve these difficulties within the path integral formalism, by adapting the anomalous Ward identities to the EFT context. Our results are very generic, and when applied to axion models, they reproduce the non-intuitive couplings between the massive SM gauge fields and the axion. Altogether, this provides an efficient formalism, paving the way for a systematic and consistent methodology to build entire EFTs involving anomalous symmetries, as required for axion or ALP searches.
description: 32 pages, v2 improved introduction and discussions. Version accepted for publication in JHEP
Untersuchung der Jet-Produktion in der tief-inelastischen ep-Streuung am ZEUS-Experiment
Creators: name: Hinrichsen, Björn
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 1994
Subjects: thesis
electron p: colliding beams
colliding beams: electron p
electron p: deep inelastic scattering
deep inelastic scattering: electron p
jet: electroproduction
electroproduction: jet
jet: hadroproduction
final state: (3jet)
(3jet): final state
track data analysis: cluster
p: structure function
parametrization
kinematics
channel cross section
quantum chromodynamics: Lambda parameter
strong interaction: coupling constant
coupling constant: strong interaction
angular distribution
deep inelastic scattering
numerical calculations: Monte Carlo
H1
ZEUS
experimental results
DESY DESY HERA Stor Stor
296 GeV

description: Universität Freiburg, Diplomarbeit, 1994; 75 pp. (1994). = Universität Freiburg, Diplomarbeit, 1994
Heralded Preparation and Readout of Entangled Phonons in a Photonic Crystal Cavity
Creators: name: Flayac, H.
name: Savona, V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a realistic protocol for the preparation and readout of mechanical Bell states in an optomechanical system. The proposal relies on parameters characterizing a photonic crystal cavity mode, coupled to two localized flexural modes of the structure, but equally applies to other optomechanical systems in the same parameter range. The nonclassical states are heralded via optical postselection and revealed in specific interference patterns characterizing the emission at the cavity frequency.
description: 5 Pages, 3 Figures + Supplemental Material 3 Pages, 3 Figures
Dense Extreme Inception Network for Edge Detection
Creators: name: Soria, Xavier
name: Sappa, Angel
name: Humanante, Patricio
name: Akbarinia, Arash
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: <<>>. Edge detection is the basis of many computer vision applications. State of the art predominantly relies on deep learning with two decisive factors: dataset content and network's architecture. Most of the publicly available datasets are not curated for edge detection tasks. Here, we offer a solution to this constraint. First, we argue that edges, contours and boundaries, despite their overlaps, are three distinct visual features requiring separate benchmark datasets. To this end, we present a new dataset of edges. Second, we propose a novel architecture, termed Dense Extreme Inception Network for Edge Detection (DexiNed), that can be trained from scratch without any pre-trained weights. DexiNed outperforms other algorithms in the presented dataset. It also generalizes well to other datasets without any fine-tuning. The higher quality of DexiNed is also perceptually evident thanks to the sharper and finer edges it outputs.
description: Manuscript published by Pattern Recognition journal in 2023
A quantum shuffle approach to quantum determinants
Creators: name: Jian, Run-Qiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 17B37, 20G42

description: Let $\bigwedge_σV=\bigoplus_{k\geq 0}\bigwedge_σ^kV$ be the quantum exterior algebra associated to a finite-dimensional braided vector space $(V,σ)$. For an algebra $\mathfrak{A}$, we consider the convolution product on the graded space $\bigoplus_{k\geq 0}\mathrm{Hom}\big(\bigwedge_σ^kV,\bigwedge_σ^kV\otimes \mathfrak{A}\big)$. Using this product, we define a notion of quantum minor determinant of a map from $V$ to $V\otimes \mathfrak{A}$, which coincides with the classical one in the case that $\mathfrak{A}$ is the FRT algebra corresponding to $U_q(\mathfrak{sl}_N)$. We establish quantum Laplace expansion formulas and multiplicative formulas for these determinants.
description: 22 pages; some new references are added; comments are welcome
Messung des hadronischen Energieflusses in der tiefunelastischen e-p-Streuung
Creators: name: Deppe, Olaf
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 1994
Subjects: thesis
ZEUS
deep inelastic scattering

description: Universität Hamburg, Diplomarbeit, 1994; 65 pp. (1994). = Universität Hamburg, Diplomarbeit, 1994
Consequences of bursty star formation on galaxy observables at high redshifts
Creators: name: Domínguez, Alberto
name: Siana, Brian
name: Brooks, Alyson M.
name: Christensen, Charlotte R.
name: Bruzual, Gustavo
name: Stark, Daniel P.
name: Alavi, Anahita
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The star formation histories (SFHs) of dwarf galaxies are thought to be \emph{bursty}, with large -- order of magnitude -- changes in the star formation rate on timescales similar to O-star lifetimes. As a result, the standard interpretations of many galaxy observables (which assume a slowly varying SFH) are often incorrect. Here, we use the SFHs from hydro-dynamical simulations to investigate the effects of bursty SFHs on sample selection and interpretation of observables and make predictions to confirm such SFHs in future surveys. First, because dwarf galaxies' star formation rates change rapidly, the mass-to-light ratio is also changing rapidly in both the ionizing continuum and, to a lesser extent, the non-ionizing UV continuum. Therefore, flux limited surveys are highly biased toward selecting galaxies in the \emph{burst} phase and very deep observations are required to detect all dwarf galaxies at a given stellar mass. Second, we show that a $\log_{10}[νL_ν(1500{\rm Å})/L_{{\rm H}α}]>2.5$ implies a very recent quenching of star formation and can be used as evidence of stellar feedback regulating star formation. Third, we show that the ionizing continuum can be significantly higher than when assuming a constant SFH, which can affect the interpretation of nebular emission line equivalent widths and direct ionizing continuum detections. Finally, we show that a star formation rate estimate based on continuum measurements only (and not on nebular tracers such as the hydrogen Balmer lines) will not trace the rapid changes in star formation and will give the false impression of a star-forming main sequence with low dispersion.
description: 12 pages, 10 figures, and 2 tables. Version accepted by MNRAS