cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Constraining Quantum Initial Conditions before Inflation
Creators: name: Gessey-Jones, T.
name: Handley, W. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We theoretically and observationally investigate different choices of initial conditions for the primordial mode function that are imposed during an epoch preceding inflation. By deriving predictions for the observables resulting from several alternate quantum vacuum prescriptions we show some choices of vacua are theoretically observationally distinguishable from others. Comparing these predictions to the Planck 2018 observations via a Bayesian analysis shows no significant evidence to favour any of the quantum vacuum prescriptions over the others. In addition we consider frozen initial conditions, representing a white-noise initial state at the big-bang singularity. Under certain assumptions the cosmological concordance model and frozen initial conditions are found to produce identical predictions for the cosmic microwave background anisotropies. Frozen initial conditions may thus provide an alternative theoretic paradigm to explain observations that were previously understood in terms of the inflation of a quantum vacuum.
description: 16 pages, 13 figures, accepted for publication in PRD. Updated to respond to referee's comments
Screening of Excitons in Single, Suspended Carbon Nanotubes
Creators: name: Walsh, Andrew G.
name: Vamivakas, A. Nickolas
name: Yin, Yan
name: Cronin, Stephen B.
name: Unlu, M. Selim
name: Goldberg, Bennett B.
name: Swan, Anna K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Resonant Raman spectroscopy of single carbon nanotubes suspended across trenches displays red shifts of up to 30 meV of the electronic transition energies as a function of the surrounding dielectric environment. We develop a simple scaling relationship between the exciton binding energy and the external dielectric function and thus quantify the effect of screening. Our results imply that the underlying particle interaction energies change by hundreds of meV.
description: Accepted to Nano Letters 5 Pages, 3 Figures, 2 Tables
(:unav)
Creators: name: (:Unav)
Publisher: name: Polish Academy of Sciences — Cracow Branch
Year: 2020

description: Folia Orientalia wydawane są od 1959 roku przez Komisję Orientalistyczną Oddziału PAN w Krakowie. Folia Orientalia są rocznikiem o zasięgu światowym, reprezentującym szeroko pojęte humanistyczne studia orientalistyczne, obejmujące arabistykę, iranistykę, turkologię, afrykanistykę, indologię, zwłaszcza tematykę językoznawczą (głównie językoznawstwo porównawcze afroazjatyckie), literaturoznawczą, historyczną, archeologiczną, kulturoznawczą, religioznawczą oraz związaną z historią sztuki, głównie z terenów Bliskiego, Środkowego i Dalekiego Wschodu oraz Afryki. Folia Orientalia publikują wyłącznie artykuły naukowe oraz recenzje prac naukowych. Języki publikacji: angielski (podstawowy), francuski, niemiecki, hiszpański, rosyjski, włoski (okazjonalnie także arabski, turecki). Jest to jedyne orientalistyczne czasopismo w Polsce o tak szerokim zasięgu światowym, jeśli chodzi zarówno skład Komitetu Doradczego, jak i recenzentów, a zwłaszcza autorów, często najwybitniejszych specjalistów reprezentujących największe i najważniejsze ośrodki studiów orientalistycznych ze wszystkich kontynentów.
Gravitational Wave Echo of Relaxion Trapping
Creators: name: Banerjee, Abhishek
name: Madge, Eric
name: Perez, Gilad
name: Ratzinger, Wolfram
name: Schwaller, Pedro
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: To solve the hierarchy problem, the relaxion must remain trapped in the correct minimum, even if the electroweak symmetry is restored after reheating. In this scenario, the relaxion starts rolling again until the backreaction potential, with its set of local minima, reappears. Depending on the time of barrier reappearance, Hubble friction alone may be insufficient to retrap the relaxion in a large portion of the parameter space. Thus, an additional source of friction is required, which might be provided by coupling to a dark photon.The dark photon experiences a tachyonic instability as the relaxion rolls, which slows down the relaxion by backreacting to its motion, and efficiently creates anisotropies in the dark photon energy-momentum tensor, sourcing gravitational waves. We calculate the spectrum of the resulting gravitational wave background from this new mechanism, and evaluate its observability by current and future experiments. We further investigate the possibility that the coherently oscillating relaxion constitutes dark matter and present the corresponding constraints from gravitational waves.
description: 17 pages, 10 figures; v2: updated fifth-force constraints, included ancillary material, version matches the one published in PRD
Symmetry Protected Quantum Computation
Creators: name: Freedman, Michael H.
name: Hastings, Matthew B.
name: Zini, Modjtaba Shokrian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Complexity (cs.CC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We consider a model of quantum computation using qubits where it is possible to measure whether a given pair are in a singlet (total spin $0$) or triplet (total spin $1$) state. The physical motivation is that we can do these measurements in a way that is protected against revealing other information so long as all terms in the Hamiltonian are $SU(2)$-invariant. We conjecture that this model is equivalent to BQP. Towards this goal, we show: (1) this model is capable of universal quantum computation with polylogarithmic overhead if it is supplemented by single qubit $X$ and $Z$ gates. (2) Without any additional gates, it is at least as powerful as the weak model of "permutational quantum computation" of Jordan [14, 18]. (3) With postselection, the model is equivalent to PostBQP.
description: To be published in Quantum Journal
Unitary matrix models and random partitions: Universality and multi-criticality
Creators: name: Kimura, Taro
name: Zahabi, Ali
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The generating functions for the gauge theory observables are often represented in terms of the unitary matrix integrals. In this work, the perturbative and non-perturbative aspects of the generic multi-critical unitary matrix models are studied by adopting the integrable operator formalism, and the multi-critical generalization of the Tracy--Widom distribution in the context of random partitions. We obtain the universal results for the multi-critical model in the weak and strong coupling phases. The free energy of the instanton sector in the weak coupling regime, and the genus expansion of the free energy in the strong coupling regime are explicitly computed and the universal multi-critical phase structure of the model is explored. Finally, we apply our results in concrete examples of supersymmetric indices of gauge theories in the large $N$ limit.
description: 49 pages, 1 figure
First evidence that non-metricity f(Q) gravity could challenge $Λ$CDM
Creators: name: Anagnostopoulos, Fotios K.
name: Basilakos, Spyros
name: Saridakis, Emmanuel N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a novel model in the framework of $f(Q)$ gravity, which is a gravitational modification class arising from the incorporation of non-metricity. The model has General Relativity as a particular limit, it has the same number of free parameters to those of $Λ$CDM, however at a cosmological framework it gives rise to a scenario that does not have $Λ$CDM as a limit. Nevertheless, confrontation with observations at both background and perturbation levels, namely with Supernovae type Ia (SNIa), Baryonic Acoustic Oscillations (BAO), cosmic chronometers (CC), and Redshift Space Distortion (RSD) data, reveals that the scenario, according to AIC, BIC and DIC information criteria, is in some datasets slightly preferred comparing to $Λ$CDM cosmology, although in all cases the two models are statistically indiscriminate. Finally, the model does not exhibit early dark energy features, and thus it immediately passes BBN constraints, while the variation of the effective Newton's constant lies well inside the observational bounds.
description: 4 pages, 2 figures, 2 Tables, version to appear in Phys.Lett.B
Separate but Together: Unsupervised Federated Learning for Speech Enhancement from Non-IID Data
Creators: name: Tzinis, Efthymios
name: Casebeer, Jonah
name: Wang, Zhepei
name: Smaragdis, Paris
Publisher: name: arXiv
Year: 2021
Subjects: subject: Sound (cs.SD)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We propose FEDENHANCE, an unsupervised federated learning (FL) approach for speech enhancement and separation with non-IID distributed data across multiple clients. We simulate a real-world scenario where each client only has access to a few noisy recordings from a limited and disjoint number of speakers (hence non-IID). Each client trains their model in isolation using mixture invariant training while periodically providing updates to a central server. Our experiments show that our approach achieves competitive enhancement performance compared to IID training on a single device and that we can further facilitate the convergence speed and the overall performance using transfer learning on the server-side. Moreover, we show that we can effectively combine updates from clients trained locally with supervised and unsupervised losses. We also release a new dataset LibriFSD50K and its creation recipe in order to facilitate FL research for source separation problems.
description: Accepted to WASPAA 21
Non-Hermitian Quantum Systems and Time-Optimal Quantum Evolution
Creators: name: Nesterov, Alexander I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently, Bender et al. have considered the quantum brachistochrone problem for the non-Hermitian $\cal PT$-symmetric quantum system and have shown that the optimal time evolution required to transform a given initial state $|ψ_i\rangle$ into a specific final state $|ψ_f\rangle$ can be made arbitrarily small. Additionally, it has been shown that finding the shortest possible time requires only the solution of the two-dimensional problem for the quantum system governed by the effective Hamiltonian acting in the subspace spanned by $|ψ_i\rangle$ and $|ψ_f\rangle$. In this paper, we study a similar problem for the generic non-Hermitian Hamiltonian, focusing our attention on the geometric aspects of the problem.
The local weak limit of $k$-dimensional hypertrees
Creators: name: Mészáros, András
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: Let $\mathcal{C}(n,k)$ be the set of $k$-dimensional simplicial complexes $C$ over a fixed set of $n$ vertices such that:
 (1) $C$ has a complete $k-1$-skeleton;
 (2) $C$ has precisely ${{n-1}\choose {k}}$ $k$-faces;
 (3) the homology group $H_{k-1}(C)$ is finite.
 Consider the probability measure on $\mathcal{C}(n,k)$ where the probability of a simplicial complex $C$ is proportional to $|H_{k-1}(C)|^2$. For any fixed $k$, we determine the local weak limit of these random simplicial complexes as $n$ tends to infinity.
 This local weak limit turns out to be the same as the local weak limit of the $1$-out $k$-complexes investigated by Linial and Peled.
Strong single-photon optomechanical coupling in a hybrid quantum system
Creators: name: Chen, Jiaojiao
name: Li, Zhuanxia
name: Luo, Xiao-Qing
name: Xiong, Wei
name: Wang, Mingfeng
name: Li, Hai-Chao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Engineering strong single-photon optomechanical couplings is crucial for optomechanical systems. Here, we propose a hybrid quantum system consisting of a nanobeam (phonons) coupled to a spin ensemble and a cavity (photons) to overcome it. Utilizing the critical property of the lower-branch polariton (LBP) formed by the ensemble-phonon interaction, the LBP-cavity coupling can be greatly enhanced by three orders magnitude of the original one, while the upper-branch polariton (UBP)-cavity coupling is fully suppressed. Our proposal breaks through the condition of the coupling strength less than the critical value in previous schemes using two harmonic oscillators. Also, strong Kerr effect can be induced in our proposal. This shows our proposed approach can be used to study quantum nonlinear and nonclassical effects in weakly coupled optomechanical systems.
description: 6 pages, 3 figures
International Decision Support Initiative reference case for health economic evaluation
Creators: name: Wilkinson, Thomas
name: Kalipso  Chalkidou
name: Walker, Damian
name: Lopert, Ruth
name: Yot  Teerawattananon
name: Varit Chantarastapornchit
name: Benjarin  Santatiwongchai
name: Kittiphong Thiboonboon
name: Waranya Rattanavipapong
name: Cairns, John
name: Culyer, Tony
name: Glassman, Amanda
name: Claxton, Karl
name: Briggs, Andrew
Publisher: name: F1000 Research Limited
Year: 2019

description: The International Decision Support Initiative (iDSI) Reference Case for Health Economic Evaluation is a second edition of a report previously titled Bill and Melinda Gates Foundation (BMGF) Methods for Economic Evaluation Project (MEEP) Final Report. MEEP and the Gates Reference Case (Gates-RC) is now known as the International Decision Support Initiative Reference Case for Health Economic Evaluation, or iDSI Reference Case for short. This report was developed through a collaborative partnership commissioned by the BMGF and led by NICE International.

Section one presents a review of economic evaluations in the program areas of HIV/AIDS, malaria, TB, and vaccines in low and middle income countries (LMIC). Distinction is made between BMGF-funded and other economic evaluations, with a focus on studies that use the Disability-Adjusted Life Year (DALY) outcome measure. The substantial methodological and reporting variation observed provides empirical support for the adoption of a reference case by BMGF.

Section two identifies the current landscape for economic evaluations in LMICs, and explores the implications of the adoption of a reference case. This section includes discussion of issues that are of particular relevance to global funders such as BMGF.

Section three presents the proposed reference case in detail. It provides explanation of the principle-led approach taken, explains why each principle is important, provides methodological specifications, and standards for reporting.

Section four outlines the recommendations of this report that should accompany the reference case if it were to be adopted by BMGF. The recommendations address the risks and benefits of adoption as outlined in Section Two, and suggest ways in which the use of the reference case could be optimised.
Using cost-effectiveness thresholds to determine value for money in low- and middle-income country healthcare systems: are current international norms fit for purpose?
Creators: name: Revill, Paul
name: Walker, Simon
name: Madan, Jason
name: Ciaranello, Andrea
name: Takondwa Mwase
name: Gibb, Diana M
name: Claxton, Karl
name: Sculpher, Mark J
Publisher: name: F1000 Research Limited
Year: 2019

description: Healthcare systems in low- and middle-income countries face considerable population healthcare needs with markedly fewer resources than those in higher income countries. The way in which available resources are allocated across competing priorities has a profound effect on how much health is generated overall, who receives healthcare interventions and who goes without. Current judgements about which interventions and programmes are cost-effective are often aspirational and do not reflect the reality of resource constraints. As a consequence their use is likely to reduce overall population health and exacerbate healthcare inequalities. This paper outlines how domestic governments and their development partners could adopt better practices to allocate resources both within and between healthcare programmes to generate health gains for their populations.
Health management information systems for Universal Health Coverage
Creators: name: Supasit  Pannarunothai
Publisher: name: F1000 Research Limited
Year: 2019

description: Information is the only block among the six health systems  building  blocks  that  comprehensively describes the other five blocks of health service delivery,  workforce,  financing, medicine  and technology and governance (WHO 2007). Health management  information  systems (HMIS) help policy  makers  develop  evidence-based  policies and  health  care  providers  to  achieve the overall health system goal of equity, efficiency and quality. Among  stakeholders,  few  have  doubts on the
importance  of  HMIS, but many have enormous doubts  on  how  to  create  an  efficient HMIS architecture. The scope of this policy brief is to highlight the important  issues  that  need  to  be addressed  when developing a roadmap for  achieving universal health coverage (UHC) and the health-related sustainable development  goals  (SDGs) through strengthening primary health care (PHC) systems.
Applying Bayesian Analysis Guidelines to Empirical Software Engineering Data: The Case of Programming Languages and Code Quality
Creators: name: Furia, Carlo A.
name: Torkar, Richard
name: Feldt, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Statistical analysis is the tool of choice to turn data into information, and then information into empirical knowledge. To be valid, the process that goes from data to knowledge should be supported by detailed, rigorous guidelines, which help ferret out issues with the data or model, and lead to qualified results that strike a reasonable balance between generality and practical relevance. Such guidelines are being developed by statisticians to support the latest techniques for Bayesian data analysis. In this article, we frame these guidelines in a way that is apt to empirical research in software engineering.
 To demonstrate the guidelines in practice, we apply them to reanalyze a GitHub dataset about code quality in different programming languages. The dataset's original analysis (Ray et al., 2014) and a critical reanalysis (Berger at al., 2019) have attracted considerable attention -- in no small part because they target a topic (the impact of different programming languages) on which strong opinions abound. The goals of our reanalysis are largely orthogonal to this previous work, as we are concerned with demonstrating, on data in an interesting domain, how to build a principled Bayesian data analysis and to showcase some of its benefits. In the process, we will also shed light on some critical aspects of the analyzed data and of the relationship between programming languages and code quality.
 The high-level conclusions of our exercise will be that Bayesian statistical techniques can be applied to analyze software engineering data in a way that is principled, flexible, and leads to convincing results that inform the state of the art while highlighting the boundaries of its validity. The guidelines can support building solid statistical analyses and connecting their results, and hence help buttress continued progress in empirical software engineering research.
Probing Extended Scalar Sectors with Precision $e^+e^-\to Zh$ and Higgs Diphoton Studies
Creators: name: Ramsey-Musolf, Michael J.
name: Yu, Jiang-Hao
name: Zhou, Jia
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the one-loop corrections to $σ(e^+ e^- \to Z h)$ arising from representative extended Standard Model scalar sector scenarios. According to the new scalar $\mathrm{SU(2)_L}$ representations, we consider the inert doublet, real and complex triplet, quintuplet, and septuplet models. With the sub-percent level precision expected for prospective future $e+e-$ collider measurements of $σ(e^+ e^- \to Z h)$, studies of the Higgsstrahlung process will probe extended scalar sector particle spectrum and interactions in a manner complementary to direct searches at the Large Hadron Collider and possible future $pp$ colliders. We also compare with the sensitivity of future Higgs diphoton decay rate measurements. We find that the $σ(e^+ e^- \to Z h)$ and $Γ(h\toγγ)$ complementarity is particularly pronounced for the complex triplet model.
description: 43 pages, 11 figures; v3: major revision requested by editor
Particles Associated with Omega Produced at Intermediate p_T
Creators: name: Chiu, Charles B.
name: Hwa, Rudolph C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The dual observation of the Omega production in central Au+Au collisions having both an exponential p_T distribution and also associated particles above the background has been referred to as the Omega puzzle. We give a quantitative description of how that puzzle can be understood in terms of phantom jets, where only ridges without peaks are produced to give rise to both the Omega trigger and its associated particles. In the framework of recombination of thermal partons we are able to reproduce both the Δϕdistribution and the trigger-momentum dependence of the yield of the associated particles. We make predictions on other observables that can be checked by further analyses of the data.
description: 16 pages + 2 figures
Learning from Noisy Labels for Entity-Centric Information Extraction
Creators: name: Zhou, Wenxuan
name: Chen, Muhao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Recent information extraction approaches have relied on training deep neural models. However, such models can easily overfit noisy labels and suffer from performance degradation. While it is very costly to filter noisy labels in large learning resources, recent studies show that such labels take more training steps to be memorized and are more frequently forgotten than clean labels, therefore are identifiable in training. Motivated by such properties, we propose a simple co-regularization framework for entity-centric information extraction, which consists of several neural models with identical structures but different parameter initialization. These models are jointly optimized with the task-specific losses and are regularized to generate similar predictions based on an agreement loss, which prevents overfitting on noisy labels. Extensive experiments on two widely used but noisy benchmarks for information extraction, TACRED and CoNLL03, demonstrate the effectiveness of our framework. We release our code to the community for future research.
description: Accepted at EMNLP 2021. Code available at https://github.com/wzhouad/NLL-IE
Phase driven magnetic and optoelectronic properties ofLa2CrNiO6: A DFT and Monte Carlo perspective
Creators: name: Bhowmik, Tushar Kanti
name: Sinha, T. P
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In search of the ferromagnetic insulators for spintronic device applications, we have studied the electronic, optical, and magnetic properties ofLa2CrNiO6(LCNO) using the first principle density functional theory (DFT)and monte carlo simulation technique. Firstly, we have adopted the sol-gel method for preparation of LCNO and refined the X-ray diffracted value using the fullprof suite under the Rietveld mechanism. The obtained orthorhombic Pbnm and cubic Fm-3m space groups are used as the input of the DFT calculations. Both the structures have shown the half metallicity and insult-ing bandgap towards the majority and minority spin direction respectively. From the magnetic moment calculations, we have seen the low spin state ofNi3+and the double exchange (DE) interaction is responsible for the ferro-magneticity of LCNO. The optical dielectric constant is 10 and the refractive index is 3.2 for orthorhombic structure. The transition temperature (TC) is determined to 110 K from MCS study, which has well agreed with experimental value (111 K). The RCP value is determined to 12 J/Kg with a 5 tesla applied field, which is good for magnetocaloric applications.
description: 29 pages, 7 figures
Black Holes in Cascading Theories: Confinement/Deconfinement Transition and other Thermal Properties
Creators: name: Mahato, Manavendra
name: Zayas, Leopoldo A. Pando
name: Terrero-Escalante, Cesar A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present numerical evidence for a transition between the Klebanov-Strassler background and a solution describing a black hole in the class of cascading solutions in the chirally restored phase. We also present a number of properties of this solution, including the running of the coupling constant, the viscosity to entropy ratio and the drag force on a quark moving in this background.
description: 34 pages, 7 figures. Version to be published by JHEP
RESEARCH PROGRESS ON IDENTIFICATION OF WHEAT MAIN DISEASES AND INSECT PESTS, POWDERY MILDEW AND PATHOGEN
Creators: name: Ye, Tao
name: Vlasenko, V.
name: Liuliu, Wu
Publisher: name: Sciences of Europe
Year: 2021
Subjects: Wheat
Powdery mildew
Fusarium head blight
Pathogen identification

description: Wheat is one of the most widely planted food crops in the world, and at least 1/3 of the world's population feeds on wheat as the staple food. With the progress and development of society, the requirements for agricultural quality are getting higher and higher, especially for wheat cultivation. Wheat is an important crop related to the economic benefits of local agriculture. Wheat fruit is one of the most common foods and the main source of carbohydrates for people. However, wheat is very susceptible to diseases in the process of planting, and in severe cases, it may even lead to a reduction in wheat production and no harvest. In this article, the main diseases faced in wheat planting are analyzed, and the research progress of crop powdery mildew and pathogen identification is described, in order to provide a theoretical reference for the research on wheat powdery mildew and its control.1. Main diseases in wheat cultivation.
One step pressing-annealing to produce LTP MnBi magnets
Creators: name: Thanida CHAROENSUK
Publisher: name: Metallurgy and Materials Science Research Institute Chulalongkorn University
Year: 2019
Subjects: Rare-earth free magnets
Manganese bismuth
Pressing
Annealing

description: Journal of Metals Materials and Minerals, 29, 2, 105-109
Statistical properties of two-dimensional elastic turbulence
Creators: name: Garg, Himani
name: Calzavarini, Enrico
name: Berti, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We numerically investigate the spatial and temporal statistical properties of a dilute polymer solution in the elastic turbulence regime, i.e., in the chaotic flow state occurring at vanishing Reynolds and high Weissenberg numbers. We aim at elucidating the relations between measurements of flow properties performed in the spatial domain with the ones taken in the temporal domain, which is a key point for the interpretation of experimental results on elastic turbulence and to discuss the validity of Taylor's hypothesis. To this end, we carry out extensive direct numerical simulations of the two-dimensional Kolmogorov flow of an Oldroyd-B viscoelastic fluid. Static point-like numerical probes are placed at different locations in the flow, particularly at the extrema of mean flow amplitude. The results in the fully developed elastic turbulence regime reveal large velocity fluctuations, as compared to the mean flow, leading to a partial breakdown of Taylor's frozen-field hypothesis. While second-order statistics, probed by spectra and structure functions, display consistent scaling behaviors in the spatial and temporal domains, the third-order statistics highlight robust differences. In particular the temporal analysis fails to capture the skewness of streamwise longitudinal velocity increments. Finally, we assess both the degree of statistical inhomogeneity and isotropy of the flow turbulent fluctuations as a function of scale. While the system is only weakly non-homogenous in the cross-stream direction, it is found to be highly anisotropic at all scales.
Global results for a Cauchy problem related to biharmonic wave maps
Creators: name: Schmid, Tobias
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35A01 (Primary), 35G50 (Secondary)

description: We prove global existence of a derivative bi-harmonic wave equation with a non-generic quadratic nonlinearity and small initial data in the scaling critical space $\dot{B}^{2,1}_{\frac{d}{2}}(\mathbb{R}^d) \times \dot{B}^{2,1}_{\frac{d}{2}-2}(\mathbb{R}^d)$ for $ d \geq 3 $. Since the solution persists higher regularity of the initial data, we obtain a small data global regularity result for the biharmonic wave maps equation for a certain class of target manifolds including the sphere.
The isotropic attractor solution of axion-SU(2) inflation: Universal isotropization in Bianchi type-I geometry
Creators: name: Wolfson, Ira
name: Maleknejad, Azadeh
name: Murata, Tomoaki
name: Komatsu, Eiichiro
name: Kobayashi, Tsutomu
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: SU(2) gauge fields coupled to an axion field can acquire an isotropic background solution during inflation. We study homogeneous but anisotropic inflationary solutions in the presence of such (massless) gauge fields. A gauge field in the cosmological background may pose a threat to spatial isotropy. We show, however, that such models $\textit{generally}$ isotropize in Bianchi type-I geometry, and the isotropic solution is the attractor. Restricting the setup by adding an axial symmetry, we revisited the numerical analysis presented in Wolfson et.al (2020). We find that the reported numerical breakdown in the previous analysis is an artifact of parametrization singularity. We use a new parametrization that is well-defined all over the phase space. We show that the system respects the cosmic no-hair conjecture and the anisotropies always dilute away within a few e-folds.
description: 23 pages, 14 figures. Published 23 September 2021 Updated to published version
Additional file 1 of Early intubation and patient-centered outcomes in septic shock: a secondary analysis of a prospective multicenter study
Creators: name: Mellado-Artigas, Ricard
name: Ferrando, Carlos
name: Martino, Frédéric
name: Delbove, Agathe
name: Ferreyro, Bruno L.
name: Darreau, Cedric
name: Jacquier, Sophie
name: Brochard, Laurent
name: Lerolle, Nicolas
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Cell Biology
Biotechnology
Biological Sciences not elsewhere classified
Cancer
Science Policy
Mental Health

description: Additional file 1. Additional information on Methods. Additional Results.
STUDY OF THE Tm-Sb-Te SYSTEM
Creators: name: Sadigov, F.
name: Ismailov, Z.
name: Mirzoeva, R.
name: Qasanova, Z.
name: Mamadova, S.
Publisher: name: Sciences of Europe
Year: 2021
Subjects: system
phase
diagram
compound.

description: Phase interaction in the Tm-Sb-Te ternary system is investigated along nine internal joins by the methods of physicochemical analysis. Phase diagrams of joins and the liquidus surface projection for the ternary system are constructed.Thee compouds, namely TmSb4Te7(S1), TmSb2Te4(S2),and TmSbTe3(S3).are found in the system.The frist congruently and participates in the triangulation of theTm-Sb-Te system.
title: Jahrbuch 2015 der Fakultät Architektur
title: Jahrbuch 2015 der Fakultät Architektur der Technischen Hochschule Nürnberg
titleType: Subtitle
Creators: name: Technische Hochschule Nürnberg
Publisher: name: Eigenverlag
Year: 2019

description: Jahrbuch 2015 der Fakultät Architektur der Technischen Hochschule Nürnberg
description: Jahrbuch / Fakultät Architektur, 2015
Confinement from gluodynamics in curved space-time
Creators: name: Gaete, Patricio
name: Spallucci, Euro
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We determine the static potential for a heavy quark-antiquark pair from gluodynamics in curved space-time. Our calculation is done within the framework of the gauge-invariant, path-dependent, variables formalism. The potential energy is the sum of a Yukawa and a linear potential, leading to the confinement of static charges.
description: 4 pages
title: Jahrbuch 2016 der Fakultät Architektur
Creators: name: Technische Hochschule Nürnberg, Technische Hochschule Nürnberg
Publisher: name: Eigenverlag
Year: 2019

description: Jahrbuch 2016 der Fakultät Architektur
description: Jahrbuch / Fakultät Architektur, 2016
Measuring densities of cold atomic clouds smaller than the resolution limit
Creators: name: Litvinov, Andrea
name: Bataille, Pierre
name: Maréchal, Etienne
name: Pedri, Paolo
name: Gorceix, Olivier
name: Robert-de-Saint-Vincent, Martin
name: Laburthe-Tolra, Bruno
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We propose and demonstrate an experimental method to measure by absorption imaging the size and local column density of a cloud of atoms, even when its smallest dimension is smaller than the resolution of the imaging system. To do this, we take advantage of the fact that, for a given total number of atoms, a smaller and denser cloud scatters less photons when the gas is optically thick. The method relies on making an ansatz on the cloud shape along the unresolved dimension(s), and on providing an additional information such as the total number of atoms. We demonstrate the method on \textit{in-situ} absorption images of elongated 87Sr Fermi gases. We find significant non-linear corrections to the estimated size and local density of the cloud compared to a standard analysis. This allows us to recover an un-distorted longitudinal density profile, and to measure transverse sizes as small as one fourth of our imaging resolution. The ultimate limit of our method is the wavelength that is used for imaging.
description: 7 pages, 5 figures
Czas i pamięć: Ingardenowska koncepcja budowy fazowej dzieła literackiego w kontekście neurofenomenologii
Creators: name: Ulicka Danuta
Publisher: name: Polska Akademia Nauk Oddział w Krakowie Komisja Historycznoliteracka
Year: 2018
Subjects: pamięć
neurofenomenologia
fazowa budowa dzieła literackiego
narratologia
protokoły narracji

description: Whereas Ingarden’s studies on the strata of the literary work of art have attracted considerable
critical attention, it is not the case with the other building-block of his theory, the concept of
the literary work’s temporal phases. It was ignored by the French structuralists and the American
pragmatists, and, more recently, by neuroscience, although the latter is founded on insights that are
similar to Ingarden’s. A comparison of the two approaches shows that his concept of temporality
remains as relevant as ever. It is an analytical tool of remarkable precision that can be used to examine
schemas of understanding conditioned by the sequential nature of language, especially in case
complex schemas elicited by utterances with many themes and hardly any temporal or causal links.
Ingarden’s analyses shed light on the analogically-functioning memory mechanisms that generate
cognitive schemas responsible for the integration of the experienced objects. Drawing on Edmund
Husserl, Henri Bergson and philosophers of the Lvov-Warsaw School, Ingarden assigned the key
role in that process to foreshortening and the retention-protention mechanism. After identifying
these sources of inspiration it is possible to suggest an alternative solution to the problem of the
cognitive value of neuroscience narrative protocols and to situate current developments in narratology
in a broader conceptual framework.
From many-body quantum dynamics to the Hartree-Fock and Vlasov equations with singular potentials
Creators: name: Chong, Jacky J.
name: Lafleche, Laurent
name: Saffirio, Chiara
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 82C10, 35Q41, 35Q55 (82C05, 35Q83)

description: We obtain the combined mean-field and semiclassical limit from the $N$-body Schrödinger equation for fermions interacting via singular potentials. To obtain the result, we first prove the uniformity in Planck's constant $h$ propagation of regularity for solutions to the Hartree$\unicode{x2013}$Fock equation with singular pair interaction potentials of the form $\pm |x-y|^{-a}$, including the Coulomb and gravitational interactions.
 In the context of mixed states, we use these regularity properties to obtain quantitative estimates on the distance between solutions to the Schrödinger equation and solutions to the Hartree$\unicode{x2013}$Fock and Vlasov equations in Schatten norms. For $a\in(0,1/2)$, we obtain local-in-time results when $N^{-1/2} \ll h \leq N^{-1/3}$. In particular, it leads to the derivation of the Vlasov equation with singular potentials. For $a\in[1/2,1]$, our results hold only on a small time scale, or with an $N$-dependent cutoff.
description: 75 pages; introduction improved and some errors in the propagation of regularity part corrected
LEGAL ISSUES OF CONCLUSION OF AGREEMENT ON ENSURING THE OBLIGATIONS OF THE DEBTOR IN JUDICIAL SANATION
Creators: name: Kalkanova Zh.
name: Okyulov, O.
name: Ruzinazarov Sh.
name: Burkhankhodjaeva Kh.
name: Ibratova, F.
Publisher: name: Sciences of Europe
Year: 2021
Subjects: judicial reorganization
pledge
retention of property
penalty
surety
plan of judicial reorganization.

description: The article discusses the issues of the debtor's fulfillment of obligations in accordance with the debt repayment schedule, measures to restore the debtor's solvency during judicial reorganization. It is concluded that the debtor's fulfillment of obligations in accordance with the debt repayment schedule cannot be secured by withholding, pledge or forfeit.
Statistical Behavior Of Domain Systems
Creators: name: Gonzalez, Diego Luis
name: Tellez, Gabriel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the statistical behavior of two out of equilibrium systems. The first one is a quasi one-dimensional gas with two species of particles under the action of an external field which drives each species in opposite directions. The second one is a one-dimensional spin system with nearest neighbor interactions also under the influence of an external driving force. Both systems show a dynamical scaling with domain formation. The statistical behavior of these domains is compared with models based on the coalescing random walk and the interacting random walk. We find that the scaling domain size distribution of the gas and the spin systems is well fitted by the Wigner surmise, which lead us to explore a possible connection between these systems and the circular orthogonal ensemble of random matrices. However, the study of the correlation function of the domain edges, show that the statistical behavior of the domains in both gas and spin systems, is not completely well described by circular orthogonal ensemble, nor it is by other models proposed such as the coalescing random walk and the interacting random walk. Nevertheless, we find that a simple model of independent intervals describe more closely the statistical behavior of the domains formed in these systems.
description: v2: minor changes
Riemann-Hilbert-Birkhoff inverse problem for semisimple flat $F$-manifolds, and convergence of oriented associativity potentials
Creators: name: Cotti, Giordano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53D45, 34M40, 34M50, 34M56

description: In this paper, we address the problem of classification of quasi-homogeneous formal power series providing solutions of the oriented associativity equations. Such a classification is performed by introducing a system of monodromy local moduli on the space of formal germs of homogeneous semisimple flat $F$-manifolds. This system of local moduli is well-defined on the complement of the "strictly doubly resonant" locus, namely a locus of formal germs of flat $F$-manifolds manifesting both coalescences of canonical coordinates at the origin, and resonances of their "conformal dimensions". It is shown how the solutions of the oriented associativity equations can be reconstructed from the knowledge of the monodromy local moduli via a Riemann-Hilbert-Birkhoff boundary value problem. Furthermore, standing on results of B.Malgrange and C.Sabbah, it is proved that any formal homogeneous semisimple flat $F$-manifold, which is not strictly doubly resonant, is actually convergent. Our semisimplicity criterion for convergence is also reformulated in terms of solutions of Losev-Manin commutativity equations, growth estimates of correlators of $F$-cohomological field theories, and solutions of open Witten-Dijkgraaf-Verlinde-Verlinde equations.
description: 68 pages, 6 figures; v2: final version
Polarization-dependent excitons and plasmon activity in nodal-line semimetal ZrSiS
Creators: name: Meléndez, Juan J.
name: Cantarero, Andrés
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The optical properties of bulk ZrSiS nodal-line semimetal are theoretically studied within a many-body formalism. The G0W0 bands are similar to those calculated within the density functional theory, except near the Γ point; in particular, no significant differences are found around the Fermi energy. On the other hand, the solution of the Bethe-Salpeter equation reveals a significant excitonic activity, mostly as dark excitons which appear in a wide energy range. Bright excitons, on the contrary, are less numerous, but their location and intensity depend greatly on the polarization of the incident electric field, as the absorption coefficient itself does. The binding energy of these excitons correlate well with their spatial distribution functions. In any case, a good agreement with available experimental data for absorption-reflection is achieved. Finally, the possible activation of plasma oscillations at low energies is discarded, because these are damped by producing electron-hole pairs, more importantly for q along the Γ-M path.
Recent Developments in Maser Theory
Creators: name: Elitzur, Moshe
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This review covers selected developments in maser theory since the previous meeting, "Cosmic Masers: From Proto-Stars to Black Holes" (Migenes & Reid 2002). Topics included are time variability of fundamental constants, pumping of OH megamasers and indicators for differentiating disks from bi-directional outflows.
description: Review presented at IAU symposium 242, "Astrophysical Masers and their Environments"
MORAL AND ETHICAL DEVELOPMENT AND SELF-DEVELOPMENT OF STUDENTS: CONDITIONS AND PREREQUISITES
Creators: name: Kadol, F.
Publisher: name: Sciences of Europe
Year: 2021
Subjects: development
self-development
morality
ethics
students
pedagogical space.

description: The identification of conditions and prerequisites for moral and ethical development and self-development of students is purposeful, specifically focused and systematically managed. The key role in their identification is given to the teaching staff of general secondary education institution. Pedagogical staff is a coordinating link of educational impact of pedagogical space on moral and ethical development and self-development of students. In identifying the conditions and prerequisites for moral and ethical development and self-development of students the basic laws of personal development and formation should be followed. In this regard, the teaching staff should create a socially favorable environment conducive to students' self-affirmation. For this purpose, it should carry out purposeful work on overcoming the external causes of immoral behavior of students. This work is a necessary link in creating a favorable pedagogical space for moral and ethical development and self-development of students.
Mass, radius, and composition of the outer crust of nonaccreting cold neutron stars
Creators: name: Hempel, Matthias
name: Schaffner-Bielich, Jurgen
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The properties and composition of the outer crust of nonaccreting cold neutron stars are studied by applying the model of Baym, Pethick, and Sutherland, which was extended by including higher order corrections of the atomic binding, screening, exchange and zero-point energy. The most recent experimental nuclear data from the atomic mass table of Audi, Wapstra, and Thibault from 2003 is used. Extrapolation to the drip line is utilized by various state-of-the-art theoretical nuclear models (finite range droplet, relativistic nuclear field and non-relativistic Skyrme Hartree-Fock parameterizations). The different nuclear models are compared with respect to the mass and radius of the outer crust for different neutron star configurations and the nuclear compositions of the outer crust.
description: 5 pages, 2 figures, submitted to J. Phys. G, part of the proceedings of the Nuclear Physics in Astrophysics III conference in Dresden