cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gravitational wave propagation beyond general relativity: waveform distortions and echoes
Creators: name: Ezquiaga, Jose Maria
name: Hu, Wayne
name: Lagos, Macarena
name: Lin, Meng-Xiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the cosmological propagation of gravitational waves (GWs) beyond general relativity (GR) across homogeneous and isotropic backgrounds. We consider scenarios in which GWs interact with an additional tensor field and use a parametrized phenomenological approach that generically describes their coupled equations of motion. We analyze four distinct classes of derivative and non-derivative interactions: mass, friction, velocity, and chiral. We apply the WKB formalism to account for the cosmological evolution and obtain analytical solutions to these equations. We corroborate these results by analyzing numerically the propagation of a toy GW signal. We then proceed to use the analytical results to study the modified propagation of realistic GWs from merging compact binaries, assuming that the GW signal emitted is the same as in GR. We generically find that tensor interactions lead to copies of the originally emitted GW signal, each one with its own possibly modified dispersion relation. These copies can travel coherently and interfere with each other leading to a scrambled GW signal, or propagate decoherently and lead to echoes arriving at different times at the observer that could be misidentified as independent GW events. Depending on the type of tensor interaction, the detected GW signal may exhibit amplitude and phase distortions with respect to a GW waveform in GR, as well as birefringence effects. We discuss observational probes of these tensor interactions with both individual GW events, as well as population studies for both ground- and space-based detectors.
description: Updated to journal version
Ιστορία των αποξηραντικών μεθόδων της κορινιθιακής σταφίδος (1636-1825-1933)
Creators: name: (:Unkn) Unknown
Publisher: name: Εκ του Εθνικού Τυπογραφείου
Year: 2025
Subjects: Drying methods
Raisin (Korinthos)

description: 414 σ.
Solution of one-dimensional Bose Hubbard model in large-$U$ limit
Creators: name: Zheng, Yong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The one-dimensional Bose-Hubbard model in large-$U$ limit has been studied via reducing and mapping the Hamiltonian to a simpler one. The eigenstates and eigenvalues have been obtained exactly in the subspaces with fixed numbers of single- and double-occupancies but without multiple-occupancies, and the thermodynamic properties of the system have been calculated further. These eigenstates and eigenvalues also enable us to develop a new perturbation treatment of the model, with which the ground-state energy has been calculated exactly to first order in $1/U$.
Moritz Schlick on the Value of Play
Creators: name: Pollard, Beth
Publisher: name: UH Research Archive
Year: 2021
Subjects: Moritz Schlick
play
Mihaly Csikszentmihalyi
flow
meaning
meaning of life
Friedrich Nietzsche
values

description: The focus of this essay is Moritz Schlick’s On the Meaning of Life. Schlick wrote On the Meaning of Life in 1927 and hoped to push back against pessimist currents of thought that were popular at the time by using the concepts of play and youth. Schlick defines plays as any “activities which carry their own purpose and value within them, independently of any extraneous goals…” (Schlick, M. 2008, p.64). For Schlick, these intrinsically valuable activities are the key to creating meaningful lives. However, I argue that there are certain tensions in Schlick’s essay that need addressing. In the first half of this essay, I make some vital changes to Schlick’s theory of play in order to address these tensions. In particular, through a discussion of Aristotle’s concepts of leisure and play, along with Mihaly Csikszentmihalyi’s concept of flow, I argue that play should be understood as a state rather than as certain activities. I also explore aspects of Schlick’s writing such as his distinction between joy and pleasure and the potential criticisms that could be levelled at this distinction. By addressing the tensions in Schlick’s work and by clarifying his theory of play, I hope to show that play is a serious candidate for giving us more meaningful and fulfilling experiences. Having addressed the issues in On The Meaning of Life, the second half of this essay is dedicated to showing how we can maximise play in our lives. To do this, I begin with an exploration of the relationship between our values and play via a discussion of Friedrich Nietzsche’s writing and argue that in order to maximise playfulness in our lives, there is a subsidiary task, which is to uncover and analyse our own values. Lastly, I argue that playfulness is a skill that we can, and ought, to develop, and explore Csikszentmihalyi’s suggestions for how we might develop this skill.
Effective anisotropies and energy barriers of magnetic nanoparticles with Neel surface anisotropy
Creators: name: Yanes, R.
name: Chubykalo-Fesenko, O.
name: Kachkachi, H.
name: Garanin, D. A.
name: Evans, R.
name: Chantrell, R. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetic nanoparticles with Neel surface anisotropy, different internal structures, surface arrangements and elongation are modelled as many-spin systems. The results suggest that the energy of many-spin nanoparticles cut from cubic lattices can be represented by an effective one-spin potential containing uniaxial and cubic anisotropies. It is shown that the values and signs of the corresponding constants depend strongly on the particle's surface arrangement, internal structure and elongation. Particles cut from a simple cubic lattice have the opposite sign of the effective cubic term, as compared to particles cut from the face-centered cubic lattice. Furthermore, other remarkable phenomena are observed in nanoparticles with relatively strong surface effects: (i) In elongated particles surface effects can change the sign of the uniaxial anisotropy. (ii) In symmetric particles (spherical and truncated octahedral) with cubic core anisotropy surface effects can change its sign. We also show that the competition between the core and surface anisotropies leads to a new energy that contributes to both the 2nd- and 4th-order effective anisotropies.
description: 15 PR pages, 19 Figure captions. Get the correct file from http://www.lehman.edu/faculty/dgaranin/EffectiveAnisotropies.pdf
Il tiranno nella tragedia del secondo Settecento italiano
Creators: name: Greco, Fausto Maria
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: Indagine sulla figura del tiranno e sul tema dell'ambizione di potere in alcune tragedie prodotte in Italia nella seconda metà del secolo XVIII, tra gli spartiacque – in senso non soltanto economico e politico-militare, ma anche culturale – della pace di Aquisgrana e del principio della stagione rivoluzionaria. Studi su Demetrio Poliorcete overo la virtù ateniese (1758) e Serse re di Persia (1764) di Saverio Bettinelli, La congiura di Milano (1779) di Alessandro Verri, Aristodemo (1786) e Galeotto Manfredi principe di Faenza (1788) di Vincenzo Monti, I Baccanali (1788) di Giovanni Pindemonte.
Effetto del Mineral Trioxide Aggregate su cellule staminali mesenchimali
Creators: name: Di Caprio, Maria Patrizia
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: Il Mineral Trioxide Aggregate (MTA) è in grado di favorire la rigenerazione di tessuti duri, come osso, cemento e dentina. Lo scopo del lavoro è valutare la capacità dell’MTA di supportare l’adesione, la proliferazione e la migrazione di cellule staminali mesenchimali umane (MSC). Le cellule sono state piastrate su MTA ProRoot (Dentsply, USA) o su cemento di Portland bianco (Mapei, Italia) ed osservate al microscopio confocale dopo 24h e dopo 5 giorni di incubazione. La proliferazione cellulare è stata valutata con il test dell’Alamar Blue, mentre la capacità di migrazione attraverso un test di migrazione in transwell. Inoltre, è stata caratterizzata la topografia di superficie dei due cementi attraverso l’uso del microscopio a forza atomica.  I nostri risultati dimostrano l’abilità dell’MTA di promuovere l’adesione, la proliferazione e la differenziazione delle MSC.
Novel methodologies in quantitative proteomics
Creators: name: Palmese, Angelo
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: The proteome is defined as the set of all expressed proteins in a cell, tissue or organism. Proteome analysis presents specialized analytical problems in two major areas: i) dynamic expression range and ii) diversity of protein expression (multiple protein forms).
Post-translational modification of proteins is part of what makes proteomics so much challenging. It is an event with dramatic effects on the complexity of the proteome. Nowadays the attention towards PTMs is notably increased due to the fact that they play a critical role in cellular functioning and they vary in response of environmental
stimuli. There are many classical techniques designed to analyse PTMs. This PhD thesis focuses on the development of new proteomics approaches for qualitative and quantitative analysis of protein nitration, protein carbonylation and
protein phosphorylation, three of the most important known PTMs. The approaches are mainly based on selective chemical modification of residues of interest coupled to advanced mass spectrometry methods. These approaches aim at a comprehensive analysing of such modifications by identification of the modified proteins, exact localization of the modified residues and quantification of the modification.
The first section of this thesis is focused on the development and the optimization of a new strategy for the qualitative and quantitative analysis of nitration of tyrosine residues. Thus, improved approach, based on chemical labelling and mass spectrometric procedures, for the selective analysis of 3-nitrotyrosine residues in
protein mixtures is described. However the major aim of this work is devoted to the use of isotopically labelled molecule to allow a simple and direct quantitative MS
analysis.
The second part aims to the optimization of a labelling protocol of carbonylated residues coupled to advanced mass spectrometry based scanning techniques to improve detection of such residues. Moreover a method for selective quantitative analysis is also described, aimed at the direct quantification of oxidation levels of proteins in different samples.
The last part of the work is focused on the development of a strategy for qualitative and quantitative analysis of serine and threonine phosphorylation without preliminary
enrichment but using chemical labelling in combination with the high performance of a novel hybrid mass spectrometer Linear Ion Trap.
To prove their wide enforceability these methodologies were set up first on model proteins and then applied to more complex systems.
Chirality inversion of Majorana edge modes in a Fu-Kane heterostructure
Creators: name: Vela, A. Donís
name: Lemut, G.
name: Pacholski, M. J.
name: Beenakker, C. W. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Fu and Kane have discovered that a topological insulator with induced s-wave superconductivity (gap $Δ_0$, Fermi velocity $v_{\rm F}$, Fermi energy $μ$) supports chiral Majorana modes propagating on the surface along the edge with a magnetic insulator. We show that the direction of motion of the Majorana fermions can be inverted by the counterflow of supercurrent, when the Cooper pair momentum along the boundary exceeds $Δ_0^2/μv_{\rm F}$. The chirality inversion is signaled by a doubling of the thermal conductance of a channel parallel to the supercurrent. Moreover, the inverted edge can transport a nonzero electrical current, carried by a Dirac mode that appears when the Majorana mode switches chirality. The chirality inversion is a unique signature of Majorana fermions in a spinful topological superconductor: it does not exist for spinless chiral p-wave pairing.
A method to improve the computational performance of nonlinear all—optical diffractive deep neural network model
Creators: name: Sun, Yichen
name: Dong, Mingli
name: Yu, Mingxin
name: Lu, Lidan
name: Liang, Shengjun
name: Xia, Jiabin
name: Zhu, Lianqing
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: To further improve the computational performance of the diffractive deep neural network (D2NN) model, we use the ReLU function to limit the phase parameters, which effectively solves the problem of vanishing gradient that occurs in the mitigation model. We add various commonly used nonlinear activation functions to the hidden layer of the model and establish the ReLU phase-limit nonlinear diffractive deep neural network (ReLU phase-limit N-D2NN) model. We evaluate the model by comparing the performance of various nonlinear activation functions, where confusion matrix and accuracy are used as evaluation methods. The numerical simulation results show that the model achieves better classification performance on the MNIST and Fashion-MNIST datasets, respectively. In particular, the highest classification performance is obtained by the ReLU phase-limit N-D2NN model, in which the hidden layer uses PReLU, with 98.38% and 90.14%, respectively. This paper provides a theoretical basis for applying the nonlinear D2NN systems in natural scenes.
Spectral evolution of non-thermal electron distributions in intense radiation fields
Creators: name: Manolakou, K.
name: Horns, D.
name: Kirk, J. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (abridged) Models of many astrophysical gamma-ray sources assume they contain a homogeneous distribution of electrons that are injected as a power-law in energy and evolve by interacting with radiation fields, magnetic fields and particles in the source and by escaping. This problem is particularly complicated if the radiation fields have higher energy density than the magnetic field and are sufficiently energetic that inverse Compton scattering is not limited to the Thomson regime. We present a simple, time-dependent, semi-analytical solution of the electron kinetic equation that treats both continuous and impulsive injection, cooling via synchrotron and inverse Compton radiation, (taking into account Klein-Nishina effects) and energy dependent particle escape. The kinetic equation for an arbitrary, time-dependent source function is solved by the method of Laplace transformations. Using an approximate expression for the energy loss rate that takes into account synchrotron and inverse Compton losses including Klein-Nishina effects for scattering off an isotropic photon field with either a power-law or black-body distribution, we find explicit expressions for the cooling time and escape probability of individual electrons. This enables the full, time-dependent solution to be reduced to a single quadrature. From the electron distribution, we then construct the time-dependent, multi-wavelength emission spectrum. We compare our solutions with several limiting cases and discuss the general appearance and temporal behaviour of spectral features (i.e., cooling breaks, bumps etc.). As a specific example, we model the broad-band energy spectrum of the open stellar association Westerlund-2 at different times of its evolution, and compare it with observations.
description: 14 pages, 8 figures, acccepted for publication in A&A
Haidinger-Michelson rings in white light
Creators: name: Azhari, Youssef El
name: Tagmouti, Sa{ī}d
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We use coherence theory to explain why it is necessary to modify the conventional setup of a Michelson interferometer to obtain Haidinger rings with an extended source of white light. The modification consists of introducing a glass slide into one of the two arms of the interferometer. This insertion circumvents the drastic restriction imposed by the low temporal coherence of white light, which prevents the observation of interference rings with the conventional setup. In order to understand this restriction, we developed and implemented a criterion for observing interference fringes. The modified setup also makes it possible to perform a spectral interferometry experiment to analyze the output of the interferometer and determine the refractive index of the glass slide over the whole visible spectrum. The fit of measured data using Sellmeier's law gives the extrapolated value of the refractive index to the IR $n_\mathrm{IR}=1.5307\pm0.0003$ and the value of the characteristic wavelength $λ_0=(164.5\pm0.4)\;\mathrm{nm}$ of the oscillator responsible for the dispersion.
description: 23 pages, 12 figures, 4 tables
Update on the multimodal pathophysiological dataset of gradual cerebral ischemia in a cohort of juvenile pigs: auditory, sensory and high-frequency sensory evoked potentials
Creators: name: Frasch, Martin G.
name: Walter, Bernd
name: Anders, Christoph
name: Bauer, Reinhard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: We expand from a spontaneous to an evoked potentials (EP) data set of brain electrical activities as electrocorticogram (ECoG) and electrothalamogram (EThG) in juvenile pig under various sedation, ischemia and recovery states. This EP data set includes three stimulation paradigms: auditory (AEP, 40 and 2000 Hz), sensory (SEP, left and right maxillary nerve) and high-frequency oscillations (HFO) SEP. This permits derivation of electroencephalogram (EEG) biomarkers of corticothalamic communication under these conditions. The data set is presented in full band sampled at 2000 Hz. We provide technical validation of the evoked responses for the states of sedation, ischemia and recovery. This extended data set now permits mutual inferences between spontaneous and evoked activities across the recorded modalities. Future studies on the dataset may contribute to the development of new brain monitoring technologies, which will facilitate the prevention of neurological injuries.
description: Accompanying data repository: https://doi.org/10.6084/m9.figshare.14122049.v3. arXiv admin note: text overlap with arXiv:2002.09154
EXPLORING THE IMPACT OF AR AND VR ON ENHANCING CUSTOMER EXPERIENCES AND DRIVING SALES IN RETAIL
Creators: name: Mbonigaba Celestin*, S. Sujatha**, A. Dinesh Kumar*** & M. Vasuki****
Publisher: name: Zenodo
Year: 2024

description: Augmented Reality (AR) and Virtual Reality (VR) technologies are revolutionizing the retail industry by enhancing customer experiences and increasing sales. This study aimed to explore the impact of AR/VR on customer engagement and sales growth. Using a mixed-methods approach, quantitative data was gathered from industry reports, while qualitative insights were drawn from interviews with retail experts. Results indicated that AR/VR adoption in retail is expected to reach a market value of $7.95 billion by 2025, with 40% of consumers willing to pay more for AR experiences. Furthermore, retailers utilizing AR/VR reported a 25% reduction in product returns and a 20% increase in conversion rates. Despite high implementation costs, AR/VR technologies are shown to significantly enhance customer interaction and brand loyalty. The study concludes that immersive technologies are crucial for the future of retail, although barriers such as high costs and consumer skepticism must be addressed.
Peptidi per la progettazione di biomateriali innovativi: sintesi e studi conformazionali
Creators: name: Gambaretto, Roberta
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: La ricerca condotta ha riguardato lo studio e la messa a punto di procedure per la realizzazione di biomateriali innovativi principalmente per impianti o sostituti ossei.
Il progetto si è articolato a vari livelli che vanno dall’individuazione di peptidi bioattivi in grado di promuovere l’adesione e la proliferazione degli osteoblasti grazie alla strategia nota come peptide mimicry, allo studio di come veicolare tali peptidi alla superficie o all’interno di un biomateriale.
La prima fase del dottorato ha riguardato la progettazione, sintesi e caratterizzazione di sequenze peptidiche che promuovono l’adesione cellulare da utilizzare per l’ottenimento di materiali biomimetici. A tale fine sono state sintetizzate due serie di peptidi: una prima serie contenente il motivo RGD per l’adesione degli osteoblasti via integrine ed una seconda serie riproducente diversi tratti della vitronettina per l’adesione specifica degli osteoblasti via eparan solfato. Le molecole che si sono dimostrate più bioattive durante saggi di adesione degli osteoblasti a polistirene in vitro sono state utilizzare per funzionalizzare covalentemente dei dischetti di Ti preventivamente sabbiati ed ossidati e si sono rivelate in grado di incrementare notevolmente l’adesione di osteoblasti al Ti in saggi in vitro. Sono inoltre stati sintetizzati dei frammenti della BMP-2 umana in grado di stimolare la differenziazione degli osteoblasti in vitro. Al fine di studiare eventuali correlazioni tra struttura e attività biologica dei vari peptidi sintetizzati sono stati condotti studi conformazionali CD ed FT-IR.
Quali scaffold tridimensionali per l’ingegneria tessutale sono stati sintetizzati diversi peptidi ionico-complementari auto-assemblanti di tipo I e modulo II. Alcune delle sequenze sintetizzate, in base a studi CD, hanno mostrato di non assumere in soluzione la struttura [beta]-sheet attesa e necessaria alla successiva formazione di membrane. Infine, l’aggiunta della sequenza-segnale per l’adesione cellulare RGD al peptide auto-assemblante EAK 16-II non ha impedito la formazione di membrane in presenza di ioni monovalenti positivi.
The galaxy power spectrum: precision cosmology from large scale structure?
Creators: name: Sanchez, Ariel G.
name: Cole, Shaun
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Published galaxy power spectra from the 2dFGRS and SDSS are not in good agreement. We revisit this issue by analyzing both the 2dFGRS and SDSS DR5 catalogues using essentially identical techniques. We confirm that the 2dFGRS exhibits relatively more large scale power than the SDSS, or, equivalently, SDSS has more small scale power. We demonstrate that this difference is due to the r-band selected SDSS catalogue being dominated by more strongly clustered red galaxies, which have a stronger scale dependent bias. The power spectra of galaxies of the same rest frame colours from the two surveys match well. If not accounted for, the difference between the SDSS and 2dFGRS power spectra causes a bias in the obtained constraints on cosmological parameters which is larger than the uncertainty with which they are determined. We also found that the correction developed by Cole et al.(2005) to model the distortion in the shape of the power spectrum due to non-linear evolution and scale dependent bias is not able to reconcile the constraints obtained from the 2dFGRS and SDSS power spectra. Intriguingly, the model is able to describe the differences between the 2dFGRS and the much more strongly clustered LRG sample, which exhibits greater nonlinearities. This shows that more work is needed to understand the relation between the galaxy power spectrum and the linear perturbation theory prediction for the power spectrum of matter fluctuations. It is therefore important to accurately model these effects to get precise estimates of cosmological parameters from these power spectra and from future galaxy surveys like Pan-STARRS, or the Dark Energy Survey, which will use selection criteria similar to the one of SDSS.
description: 13 pages, 10 figures; minor changes to match version accepted for publication in MNRAS
Fast calculation of the electrostatic potential in ionic crystals by direct summation method
Creators: name: Gellé, Alain
name: Lepetit, Marie-Bernadette
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: An efficient real space method is derived for the evaluation of the Madelung's potential of ionic crystals. The proposed method is an extension of the Evjen's method. It takes advantage of a general analysis for the potential convergence in real space. Indeed, we show that the series convergence is exponential as a function of the number of annulled multipolar momenta in the unit cell. The method proposed in this work reaches such an exponential convergence rate. Its efficiency is comparable to the Ewald's method, however unlike the latter, it uses only simple algebraic functions.
Social farming and policies in Tuscany, between social innovation and path dependency
Creators: name: Di Iacovo, Francesco
name: Moruzzo, Roberta
name: Rossignoli, Cristiano
Publisher: name: Italian Review of Agricultural Economics
Year: 2019

description: Social farming (SF) emerged in the latest ten years in Italy and in the EU as an innovative practice able to link multifunctional agriculture and innovative social services for both urban and rural areas. SF mobilises unexpected resources from agriculture in order to meet local emerging social and economic needs and can be easily analysed under the perspective of social innovation (SI). Stakeholders with multiple competences and narratives are engaged by activating a political game that might have fragmented results at diverse levels. The paper starting from the analysis of the Tuscany case − one of the Italian regions where the discussion aroundSF started for the first time − focuses on the triangulation among narratives, articulation in policy making, and results in terms of innovation in rural areas.
description: Italian Review of Agricultural Economics, Vol 73 No 3 (2018)
title: Ανάλυση πλωτής ημι-βυθιζόμενης πλατφόρμας ανεμογεννήτριας με την χρήση του λογισμικού openfast
titleType: AlternativeTitle
Creators: name: Christodoulakis, Nikolaos
Publisher: name: National Technological University of Athens
Year: 2025
Subjects: Wind Turbine
Ανεμογεννήτρια

description: Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία. Διεπιστημονικό-Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.) “Παραγωγή και Διαχείριση Ενέργειας”
Ivermectin for Covid-19
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2020
Subjects: Covid-19
Ivermectin
Hydroxychloroquine
Doxycycline
azithromycin
Covid-19 rare symptoms

description: Discussion of scholarly papers published on Ivermectin, starting from the article of Caly et al. in Antiviral Research, available online April 3, 2020, and of some news that we can find about the use of this drug for the treatment of Covid-19. A list of clinical trials is also given. The proposed discussion was made in a series of versions from 14 June this of 29 July 2020. For what concerns scholarly papers, we report among them two preprints in MedRχiv. One, posted on 10 June, concludes that Ivermectin was associated with lower mortality during treatment of Covid-19. The other preprint, posted on 8 July, is showing the result of a clinical trial. This preprint tells, in its conclusions that add-on use of Ivermectin is giving better results when compared to controls, in particular a significant shorter hospitalization. A preprint, posted in Research Square on July 14, is reported too. This preprint is giving the result of a trial regarding the combinations Ivermectin-Doxycycline and Hydroxychloroquine-Azithromycin. Among news, we consider especially the news regarding the use of Ivermectin in Peru. The case of Iquitos is discussed in detail. In Iquitos, capital of the Department of Loreto, by May 25 Covid-19 cases and deaths had dropped notably, as reported on the web. Epidemic data in this region are considered. Recent news (July 27), displaying the observation of rare symptoms of Covid-19, is also reported in detail. The observation was related to a set of more than 3,000 patients in Lima. The formulation of Ivermectin used in Peru is also discussed, in particular that of the oral solution, disclosed by the Peruvian Government.
description: Before reading this work, please consider that I am not a physician. I do not suggest the use of ivermectin. I am not touting this drug. This analysis of publications and news about ivermectin is made in the framework of a wider investigation about information concerning drugs used for Covid-19.
Global polarization measurement in Au+Au collisions
Creators: name: STAR Collaboration
name: Abelev, B. I.
name: Selyuzhenkov, I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The system created in non-central relativistic nucleus-nucleus collisions possesses large orbital angular momentum. Due to spin-orbit coupling, particles produced in such a system could become globally polarized along the direction of the system angular momentum. We present the results of Lambda and anti-Lambda hyperon global polarization measurements in Au+Au collisions at sqrt{s_NN}=62.4 GeV and 200 GeV performed with the STAR detector at RHIC. The observed global polarization of Lambda and anti-Lambda hyperons in the STAR acceptance is consistent with zero within the precision of the measurements. The obtained upper limit, |P_{Lambda,anti-Lambda}| <= 0.02, is compared to the theoretical values discussed recently in the literature.
description: 11 pages, 10 figures, 1 table, minor changes, accepted for publication in Phys. Rev. C
Discrete-time closed-loop control of a hinged wavemaker
Creators: name: Hodge, Steven Eric
Publisher: name: University of British Columbia
Year: 2010

description: The waves produced by a flap-type wavemaker, hinged in the middle, are modelled using first-order linear wavemaker theory. A simplified closed-loop, discrete-time system is proposed. This includes a proportional plus integral plus derivative (PID) controller, and the wavemaker in order to compare the actual wave spectral density with the desired wave spectral density at a single frequency. Conventional discrete-time control theory is used with the major difference being the use of a relatively long timestep duration between changes in waveboard motion. The system response is calculated for many controller gain combinations by the computer simulation program CBGANES. System stability is analyzed for the gain combinations by using two different methods. One method is an extension of the Routh criterion to discrete-time and the other is a state-space eigenvalue approach. The computer simulation and the stability analysis provide a means for selecting possible controller gains for use at a specific frequency in an actual wave tank experiment. The computer simulation performance response and the two stability analyses predict the same results for varying controller gains. It is evident that integral control is essential in order to achieve a desired response for this long duration timestep application. The variation in discrete timestep duration and in desired spectral density (an indirect indication of frequency variation) provide variation in the constraints on controller gain selection. The controller gain combinations yielding the fastest stable response at a single frequency are for large proportional gain and small integral and derivative gains.
Jean Paul's Werke
Creators: name: Jean Paul
Publisher: name: Gustav Hempel
Year: 1879

description: Band 1 = Teil 1-3 Teil 1-2 <> unsichtbare Loge nebst einer Biographie Jean Pauls von Rudolph Gottschall Teil 3 Quintus Fixlein
description: Band 2 = Teil 4-6 Teil 4 Auswahl aus des Teufels Papieren Teil 5 Biographische Belustigungen unter der Gehirnschale einer Riesin Teil 6 <> Jubelsenior
description: Band 3 = Teil 7-10 Hesperus
description: Band 4 = Teil 11-14 Siebenkäs
description: Band 5 = Teil 15-18 Titan
description: Band 6 = Teil 19-23 Teil 19 Komischer Anhang zum Titan, nebst Clavis Fichtiana Teil 20-23 Flegeljahre
description: Band 7 = Teil 24-31 Teil 24-26 Dr. Katzenberger's Badereise Teil 27-29 <> Komet Teil 30 <> heimliche Klagelied der jetzigen Männer, und die wunderbare Gesellschaft in der Neujahrsnacht Teil 31 <> Feldpredigers Schmelzle Reise nach Flätz
description: Band 8 = Teil 32-38 Teil 32 Leben Fibel's Teil 33 Freiheits-Büchlein Teil 34 Friedenspredigt an Deutschland Teil 35 Dämmerung für Deutschland Teil 36 Mars' und Phoebus' Thronwechsel im Jahre 1814 Teil 37 Politische Fastenpredigten während Deutschlands Marterwoche Teil 38 Briefe und bevorstehender Lebenslauf
description: Band 9 = Teil 39-44 Teil 39 <> Kampaner Tal Teil 40-41 Grönländische Prozesse Teil 42-43 Palingenesien Teil 44 Museum
description: Band 10 = Teil 45-47 Herbst-Blumine
description: Band 11 = Teil 48 Vermischte Aufsätze und Dichtungen aus Zeitschriften, Taschenbüchern etc. und Jean Paul's handschriftlichem Nachlass
description: Band 12 = Teil 49-53 Teil 49-51 Vorschule der Aesthetik Teil 52-53 Kleine Bücherschau
description: Band 13 = Teil 54-60 Ueber die deutschen Doppelwörter - Levana - Selina
description: Bd. 1: XLVII, 392 Seiten, 223 Seiten ; Bd. 2: VIII, 301 Seiten, 132 Seiten ; Bd. 3: VIII, 652 Seiten ; Bd. 4: 494 Seiten ; Bd. 5: VIII, 712 Seiten ; Bd. 6: 196 Seiten, VIII, 424 Seiten ; Bd. 7: 248 Seiten, 415 Seiten, 51 Seiten, 64 Seiten ; Bd. 8: 174 Seiten, 63 Seiten, 40 Seiten, 111 Seiten, 32 Seiten, 128 Seiten, 144 Seiten ; Bd. 9: 144 Seiten, 200 Seiten, 190 Seiten, 152 Seiten ; Bd. 10: 480 Seiten ; Bd. 11: XXII, [1] Blatt, 461 Seiten, [1] Blatt ; Bd. 12: XV, 495 Seiten, VIII, 215 Seiten ; Bd. 13: 248 Seiten, 415 Seiten, 51 Seiten, 64 Seiten
description: Geschenkexlibris-Etikette: "Dieses Geschenk verdankt die Bibliothek der Eidgenössischen Technischen Hochschule der Freigebigkeit von Frau Prof. F. Medicus Zürich 25.8.64" 990043455140205503_0001 Exemplar der ETH-BIB
description: Exlibrisetikette: "C. Troemer's Universitäts-Buchhandlung (Ernst Harms) Freiburg i.Br. Bertholdstrasse 21" Exemplar der ETH-BIB
Normal and anomalous solitons in the theory of dynamical Cooper pairing
Creators: name: Yuzbashyan, Emil A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We obtain multi-soliton solutions of the time-dependent Bogoliubov-de Gennes equations or, equivalently, Gorkov equations that describe the dynamics of a fermionic condensate in the dissipationless regime. There are two kinds of solitons - normal and anomalous. At large times, normal multi-solitons asymptote to unstable stationary states of the BCS Hamiltonian with zero order parameter (normal states), while the anomalous ones tend to eigenstates characterized by a nonzero anomalous average. Under certain circumstances, multi-soliton solutions break up into sums of single solitons. In the linear analysis near the stationary states, solitons correspond to unstable modes. Generally, they are nonlinear extensions of these modes, so that a stationary state with $k$ unstable modes gives rise to a $k$-soliton solution. We relate parameters of the multi-solitons to those of the asymptotic stationary state, which determines the conditions necessary for exciting solitons. We further argue that the dynamics in many physical situations is multi-soliton.
description: 41 pages, 14 figures
Cluster Structure in Cosmological Simulations I: Correlation to Observables, Mass Estimates, and Evolution
Creators: name: Jeltema, Tesla E.
name: Hallman, Eric J.
name: Burns, Jack O.
name: Motl, Patrick M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use Enzo, a hybrid Eulerian AMR/N-body code including non-gravitational heating and cooling, to explore the morphology of the X-ray gas in clusters of galaxies and its evolution in current generation cosmological simulations. We employ and compare two observationally motivated structure measures: power ratios and centroid shift. Overall, the structure of our simulated clusters compares remarkably well to low-redshift observations, although some differences remain that may point to incomplete gas physics. We find no dependence on cluster structure in the mass-observable scaling relations, T_X-M and Y_X-M, when using the true cluster masses. However, estimates of the total mass based on the assumption of hydrostatic equilibrium, as assumed in observational studies, are systematically low. We show that the hydrostatic mass bias strongly correlates with cluster structure and, more weakly, with cluster mass. When the hydrostatic masses are used, the mass-observable scaling relations and gas mass fractions depend significantly on cluster morphology, and the true relations are not recovered even if the most relaxed clusters are used. We show that cluster structure, via the power ratios, can be used to effectively correct the hydrostatic mass estimates and mass-scaling relations, suggesting that we can calibrate for this systematic effect in cosmological studies. Similar to observational studies, we find that cluster structure, particularly centroid shift, evolves with redshift. This evolution is mild but will lead to additional errors at high redshift. Projection along the line of sight leads to significant uncertainty in the structure of individual clusters: less than 50% of clusters which appear relaxed in projection based on our structure measures are truly relaxed.
description: 57 pages, 18 figures, accepted to ApJ, updated definition of T_X and M_gas but results unchanged, for version with full resolution figures, see http://www.ociw.edu/~tesla/sims.ps.gz
Social Farming in Italy. Analysis of an «inclusive model»
Creators: name: Giarè, Francesca
name: Borsotto, Patrizia
name: Signoriello, Ilaria
Publisher: name: Italian Review of Agricultural Economics
Year: 2019

description: The growing understanding of potential role of agricultural and rural resources to enhance the social, physical, mental and economic well-being draw the attention of an increasing range of stakeholders on Social Farming. The contribute discloses the main results of a study focusing Social farming in Italy: actors, activity, networks of relationships within which the initiatives are implemented, agreements among heterogeneous actors, etc. The main aim is to provide a whole analysis of the possible processes of social and working inclusion in agriculture activities, including purposes and methods, highlighting the strengths and weaknesses in the framework of the current welfare and rural development systems.
description: Italian Review of Agricultural Economics, Vol 73 No 3 (2018)
Anisotropic minimal conductivity of graphene bilayers
Creators: name: Moghaddam, Ali G.
name: Zareyan, Malek
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Fermi line of bilayer graphene at zero energy is transformed into four separated points positioned trigonally at the corner of the hexagonal first Brillouin zone. We show that as a result of this trigonal splitting the minimal conductivity of an undoped bilayer graphene strip becomes anisotropic with respect to the orientation $θ$ of the connected electrodes and finds a dependence on its length $L$ on the characteristic scale $\ell=π/Δk\simeq 50 nm$ determined by the inverse of k-space distance of two Dirac points. The minimum conductivity increases from a universal isotropic value $σ^{min}_{\bot}=(8/π)e^2/h$ for a short strip $L\ll \ell$ to a higher anisotropic value for longer strips, which in the limit of $L\gg \ell$ varies from $(7/3)σ^{min}_{\bot}$ at $θ=0$ to $3σ^{min}_{\bot}$ over an angle range $Δθ\sim \ell/L$.
description: 4 pages, 2 figures
NiO: Correlated Bandstructure of a Charge-Transfer Insulator
Creators: name: Kunes, J.
name: Anisimov, V. I.
name: Skornyakov, S. L.
name: Lukoyanov, A. V.
name: Vollhardt, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The bandstructure of the prototypical charge-transfer insulator NiO is computed by using a combination of an {\it ab initio} bandstructure method and the dynamical mean-field theory with a quantum Monte-Carlo impurity solver. Employing a Hamiltonian which includes both Ni-d and O-p orbitals we find excellent agreement with the energy bands determined from angle-resolved photoemission spectroscopy. This solves a long-standing problem in solid state theory. Most notably we obtain the low-energy Zhang-Rice bands with strongly k-dependent orbital character discussed previously in the context of low-energy model theories.
description: 4 pages, 3 figure
Solvent viscosity dependence for enzymatic reactions
Creators: name: Sitnitsky, A. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Biomolecules (q-bio.BM)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: A mechanism for relationship of solvent viscosity with reaction rate constant at enzyme action is suggested. It is based on fluctuations of electric field in enzyme active site produced by thermally equilibrium rocking (cranckshaft motion) of the rigid plane (in which the dipole moment $\approx 3.6 D$ lies) of a favourably located and oriented peptide group (or may be a few of them). Thus the rocking of the plane leads to fluctuations of the electric field of the dipole moment. These fluctuations can interact with the reaction coordinate because the latter in its turn has transition dipole moment due to separation of charges at movement of the reacting system along it. The rocking of the plane of the peptide group is sensitive to the microviscosity of its environment in protein interior and the latter is a function of the solvent viscosity. Thus we obtain an additional factor of interrelationship for these characteristics with the reaction rate constant. We argue that due to the properties of the cranckshaft motion the frequency spectrum of the electric field fluctuations has a sharp resonance peak at some frequency and the corresponding Fourier mode can be approximated as oscillations. We employ a known result from the theory of thermally activated escape with periodic driving to obtain the reaction rate constant and argue that it yields reliable description of the preexponent where the dependence on solvent viscosity manifests itself. The suggested mechanism is shown to grasp the main feature of this dependence known from the experiment and satisfactorily yields the upper limit of the fractional index of a power in it.
description: 36 LaTex pages, 9 Eps figures, final version
The mass-metallicity relation at cosmic noon in overdense environments: first results from the MAMMOTH-Grism HST slitless spectroscopic survey
Creators: name: Wang, Xin
name: Li, Zihao
name: Cai, Zheng
name: Shi, Dong Dong
name: Fan, Xiaohui
name: Zheng, Xian Zhong
name: Bian, Fuyan
name: Teplitz, Harry I.
name: Alavi, Anahita
name: Colbert, James W.
name: Henry, Alaina L.
name: Malkan, Matthew A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The MAMMOTH-Grism slitless spectroscopic survey is a Hubble Space Telescope (HST) cycle-28 medium program, which is obtaining 45 orbits of WFC3/IR grism spectroscopy in the density peak regions of three massive galaxy protoclusters at $z=2-3$ discovered using the MAMMOTH technique. We introduce this survey by presenting the first measurement of the mass-metallicity relation (MZR) at high redshift in overdense environments via grism spectroscopy. From the completed MAMMOTH-Grism observations in the field of the BOSS1244 protocluster at $z=2.24\pm0.02$, We secure a sample of 36 protocluster member galaxies at $z\sim2.24$, showing strong nebular emission lines ([O III], H$β$ and [O II]) in their G141 spectra. Using the multi-wavelength broad-band deep imaging from HST and ground-based telescopes, we measure their stellar masses in the range of $[10^{9},10^{10.4}]M_\odot$, instantaneous star formation rates (SFR) from 10 to 240$M_\odot yr^{-1}$, and global gas-phase metallicities [$\frac{1}{3}$,1] of solar. Compared with similarly selected field galaxy sample at the same redshift, our galaxies show on average increased SFRs by $\sim$0.06dex and $\sim$0.18dex at $\sim$10$^{10.1}M_\odot$ and $\sim$10$^{9.8}M_\odot$, respectively. Using the stacked spectra of our sample galaxies, we derive the MZR in the BOSS1244 protocluster core as $12+\log({\rm O/H})=(0.136\pm0.018)\times\log(M_\ast/M_\odot)+(7.082\pm0.175)$, showing significantly shallower slope than that in the field. This shallow MZR slope is likely caused by the combined effects of efficient recycling of feedback-driven winds and cold-mode gas accretion in protocluster environments. The former effect helps low-mass galaxies residing in overdensities retain their metal production, whereas the latter effect dilutes the metal content of high-mass galaxies, making them more metal poor than their coeval field counterparts.
description: 15 pages, 5 figures, and 4 tables, accepted to ApJ