cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A single photon produces general W state of N qubits and its application
Creators: name: Mei, Di
name: Li, Chong
name: Song, He-Shan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Based on the Wu's scheme[1], We prepare the general N-qubit W state. We find that the concurrence of two qubits in general N-qubit W state is only related to their coefficients and we successfully apply the general N-qubit W state to quantum state transfer and quantum state prepare like that in two-qubit system.
Global existence and nonlinear stability for the relativistic Vlasov-Poisson system in the gravitational case
Creators: name: Hadzic, Mahir
name: Rein, Gerhard
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35B35, 85A05

description: As is well known from the work of R. Glassey} and J. Schaeffer, the main energy estimates which are used in global existence results for the gravitational Vlasov-Poisson system do not apply to the relativistic version of this system, and smooth solutions to the initial value problem with spherically symmetric initial data of negative energy blow up in finite time. For similar reasons the variational techniques by which Y. Guo and G. Rein obtained nonlinear stability results for the Vlasov-Poisson system do not apply in the relativistic situation. In the present paper a direct, non-variational approach is used to prove nonlinear stability of certain steady states of the relativistic Vlasov-Poisson system against spherically symmetric, dynamically accessible perturbations. The resulting stability estimates imply that smooth solutions with spherically symmetric initial data which are sufficiently close to the stable steady states exist globally in time.
description: 38 pages
Constraining the Earliest Circumstellar Disks and their Envelopes
Creators: name: Chiang, Hsin-Fang
name: Looney, Leslie W.
name: Tassis, Konstantinos
name: Mundy, Lee G.
name: Mouschovias, Telemachos Ch.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using interferometric data from BIMA observations, combined with detailed modeling in Fourier space of the physical structures predicted by models, we constrain the circumstellar envelope parameters for four Class 0 young stellar objects, as well as their embedded circumstellar disks. The envelopes of these objects are still undergoing collapse, and theoretical collapse models can be compared to the observations. Since it has been suggested in a previous study that both the Larson-Penston and Shu similarity solutions underestimate the age of the system, we adopt Tassis & Mouschovias' model of the collapse process, which includes all relevant magnetic fields effects. The results of the model fitting show a good consistency between theory and data; furthermore, no age problem exists since the Tassis & Mouschovias' model is age independent for the first 255 kyr. Although the majority of the continuum dust emission arises from the circumstellar envelopes, these objects have well known outflows, which suggest the presence of circumstellar disks. At the highest resolution, most of the large-scale envelope emission is resolved out by interferometry, but the small-scale residual emission remains, making it difficult to observe only the compact disk component. By modeling the emission of the envelope and subtracting it from the total emission, we constrain the disk masses in our four systems to be comparable to or smaller than the typical disk masses for T Tauri systems.
description: 23 pages, 4 figures, accepted for publication in the Astrophysical Journal
On the measurement of the proton-air cross section using longitudinal shower profiles
Creators: name: Ulrich, Ralf
name: Blümer, Johannes
name: Engel, Ralph
name: Schüssler, Fabian
name: Unger, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we will discuss the prospects of deducing the proton-air cross section from fluorescence telescope measurements of extensive air showers. As it is not possible to observe the point of first interaction $X_{\rm 1}$ directly, other observables closely linked to $X_{\rm 1}$ must be inferred from the longitudinal profiles. This introduces a dependence on the models used to describe the shower development. The most straightforward candidate for a good correlation to $X_{\rm 1}$ is the depth of shower maximum $X_{\rm max}$. We will discuss the sensitivity of an $X_{\rm max}$-based analysis on $σ_{\rm p-air}$ and quantify the systematic uncertainties arising from the model dependence, parameters of the reconstruction method itself and a possible non-proton contamination of the selected shower sample.
description: 4 pages, Proceedings for ISVHECRI Weihei 2006
Additional file 3 of Rehabilitation for children with chronic acquired brain injury in the Child in Context Intervention (CICI) study: study protocol for a randomized controlled trial
Creators: name: Rohrer-Baumgartner, Nina
name: Holthe, Ingvil Laberg
name: Svendsen, Edel Jannecke
name: Røe, Cecilie
name: Egeland, Jens
name: Borgen, Ida M. H.
name: Hauger, Solveig L.
name: Forslund, Marit V.
name: Brunborg, Cathrine
name: Øra, Hege Prag
name: Dahl, Hilde Margrete
name: Bragstad, Line Kildal
name: Killi, Eli Marie
name: Sandhaug, Maria
name: Kleffelgård, Ingerid
name: Strand-Saugnes, Anine Pernille
name: Dahl-Hilstad, Ingeborg
name: Ponsford, Jennie
name: Winter, Laraine
name: Wade, Shari
name: Løvstad, Marianne
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 3. Funding documentation (translated)
Search for a New B-L Z' Gauge Boson with the NA64 Experiment at CERN
Creators: name: Andreev, Yu. M.
name: Banerjee, D.
name: Banto-Oberhauser, B.
name: Bernhard, J.
name: Bisio, P.
name: Bondi, M.
name: Burtsev, V.
name: Celentano, A.
name: Charitonidis, N.
name: Chumakov, A. G.
name: Cooke, D.
name: Crivelli, P.
name: Depero, E.
name: Dermenev, A. V.
name: Donskov, S. V.
name: Dusaev, R. R.
name: Enik, T.
name: Frolov, V. N.
name: Gardikiotis, A.
name: Gerassimov, S. G.
name: Gninenko, S. N.
name: Hosgen, M.
name: Jeckel, M.
name: Kachanov, V. A.
name: Karneyeu, A. E.
name: Kekelidze, G. D.
name: Ketzer, B.
name: Kirpichnikov, D. V.
name: Kirsanov, M. M.
name: Kolosov, V. N.
name: Kovalenko, S. G.
name: Kramarenko, V. A.
name: Kravchuk, L. V.
name: Krasnikov, N. V.
name: Kuleshov, S. V.
name: Lyubovitskij, V. E.
name: Lysan, V.
name: Marsicano, L.
name: Matveev, V. A.
name: Mikhailov, Yu. V.
name: Bueno, L. Molina
name: Peshekhonov, D. V.
name: Polyakov, V. A.
name: Radics, B.
name: Rubbia, A.
name: Salamatin, K.
name: Samoylenko, V. D.
name: Sieber, H.
name: Shchukin, D.
name: Soto, O.
name: Tikhomirov, V. O.
name: Tlisova, I.
name: Toropin, A. N.
name: Vasilishin, B. I.
name: Volkov, P. V.
name: Volkov, V. Yu.
name: Voronchikhin, I.
name: Zamora-Saa, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A search for a new $Z'$ gauge boson associated with (un)broken B-L symmetry in the keV-GeV mass range is carried out for the first time using the missing-energy technique in the NA64 experiment at the CERN SPS. From the analysis of the data with 3.22e11 electrons on target collected during 2016-2021 runs no signal events were found. This allows to derive new constraints on the $Z'-e$ coupling strength, which for the mass range $0.3 < m_{Z'} < 100$ MeV are more stringent compared to those obtained from the neutrino-electron scattering data.
description: 6 pages, 3 figures. Revised shorter version, Fig.3 updated, published in Physical Review Letters
Stokes diagnostics of simulated solar magneto-convection
Creators: name: Shelyag, S.
name: Schuessler, M.
name: Solanki, S. K.
name: Voegler, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results of synthetic spectro-polarimetric diagnostics of radiative MHD simulations of solar surface convection with magnetic fields. Stokes profiles of Zeeman-sensitive lines of neutral iron in the visible and infrared spectral ranges emerging from the simulated atmosphere have been calculated in order to study their relation to the relevant physical quantities and compare with observational results. We have analyzed the dependence of the Stokes-I line strength and width as well as of the Stokes-V signal and asymmetries on the magnetic field strength. Furthermore, we have evaluated the correspondence between the actual velocities in the simulation with values determined from the Stokes-I (Doppler shift of the centre of gravity) and Stokes-V profiles (zero-crossing shift). We confirm that the line weakening in strong magnetic fields results from a higher temperature (at equal optical depth) in the magnetic flux concentrations. We also confirm that considerable Stokes-V asymmetries originate in the peripheral parts of strong magnetic flux concentrations, where the line of sight cuts through the magnetopause of the expanding flux concentration into the surrounding convective donwflow.
description: Astronomy & Astrophysics, in press
Symmetrical emergence of extreme events at multiple regions in a damped and driven velocity-dependent mechanical system
Creators: name: S, Sudharsan
name: A, Venkatesan
name: M, Senthilvelan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: In this work, we report the emergence of extreme events in a damped and driven velocity-dependent mechanical system. We observe that the extreme events emerge at multiple points. We further notice that the extreme events occur symmetrically in both positive and negative values at all the points of emergence. We statistically confirm the emergence of extreme events by plotting the probability distribution function of peaks and interevent intervals. We also determine the mechanism behind the emergence of extreme events at all the points and classify these points into two categories depending on the region at which the extreme events emerge. Finally, we plot the two parameter diagram in order to have a complete overview of the system.
description: 19 pages, 9 figures, To appear in Physica Scritpa (2021)
Additional file 1 of Optimal dose determination of enerisant (TS-091) for patients with narcolepsy: two randomized, double-blind, placebo-controlled trials
Creators: name: Inoue, Yuichi
name: Uchiyama, Makoto
name: Umeuchi, Hideo
name: Onishi, Koichi
name: Ogo, Hiroki
name: Kitajima, Iwao
name: Matsushita, Isao
name: Nishino, Izumi
name: Uchimura, Naohisa
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 60506 Virology

description: Additional file 1: Table S1. The MWT outcomes in the narcolepsy subgroups with and without cataplexy in Study 1. Table S2. Weekly incidence of cataplectic episodes in Study 1 and Study 2. Table S3. The MWT outcomes in patients with narcolepsy type 1 and type 2 in Study 2.
Low frequency Rabi spectroscopy of dissipative two level systems. The dressed state approach
Creators: name: Greenberg, Ya. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have analyzed a dissipative two level quantum system (TLS) which is continuously and simultaneously irradiated by a high and low frequency excitation. The interaction of the TLS with a high frequency excitation is considered in the frame of the dressed state approach. A linear response of the coupled TLS and corresponding photon field system to a signal whose frequency is of the order of the Rabi frequency is found. The response exhibits undamped low frequency oscillations, whose amplitude has a clear resonance at the Rabi frequency with the width being dependent on the damping rates of the TLS. The method can be useful for low-frequency Rabi spectroscopy in various physical systems described by a two-level Hamiltonian, such as nuclei spins in NMR, double well quantum dots, superconducting flux and charge qubits, etc. The application of the method to a superconducting flux qubit and to the detection of NMR is considered in detail.
description: In this version the Introduction, the NMR application part and some text are modified, several new references are added. Some unimportant calculations are removed. Several typos are corrected
Ανάλυση παραγωγικών συστημάτων υπό το πρίσμα της βιώσιμης ανάπτυξης με χρήση θεωρίας δυναμικής συστημάτων
Creators: name: Μπέσιου, Μαρία Δ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Βιώσιμη ανάπτυξη
Δυναμική συστημάτων
Εφοαδιαστική αλυσίδα κλειστού βρόγχου
Σχεδίαση προϊόντων φιλικών προς το περιβάλλον
Περιβαλλοντική νομοθεσία
Πράσινη εικόνα
Sustainable development
System dynamics
Closed-loop supply chain
Design-for-environment activities
Environmental ligislation
Green image

description: Στην παρούσα διατριβή εξετάζεται το πρόβλημα βελτίωσης της λειτουργίας των παραγωγικών συστημάτων υπό το πρίσμα της βιώσιμης ανάπτυξης. Η βιώσιμη ανάπτυξη μελετάται από την οικονομική και την περιβαλλοντική της διάσταση. Μελετάται μια εφοδιαστική αλυσίδα κλειστού βρόγχου με δραστηριότητες ανακύκλωσης και σχεδίασης προϊόντων φιλικών προς το περιβάλλον που λειτουργεί υπό το πρίσμα της βιώσιμης ανάπτυξης. Η λειτουργία της εφοδιαστικής αλυσίδας περιορίζεται από τους φυσικούς περιορισμούς του περιβάλλοντος (φυσικές α΄ ύλες και χώροι απόρριψης), τις επιταγές της περιβαλλοντικής νομοθεσίας, την πράσινη εικόνα και τις επιστροφές των χρησιμοποιημένων προϊόντων από τους καταναλωτές. Το δυναμικό πρότυπο αναπτύσσεται με χρήση της Δυναμικής Συστημάτων και εφαρμόζεται σε μια πραγματική μελέτη περίπτωσης μιας αντίστροφης εφοδιαστικής αλυσίδας ηλεκτρικού και ηλεκτρονικού εξοπλισμού που αναπτύσσεται στην Ελλάδα. Σχεδιάζονται στατιστικά πειράματα για τη μελέτη των αλληλεπιδράσεων της βιώσιμης ανάπτυξης με τα παραγωγικά συστήματα. Από τα αποτελέσματα των προσομοιώσεων του προτύπου προκύπτουν συνθήκες αύξησης του κέρδους της εφοδιαστικής αλυσίδας κλειστού βρόγχου και βελτίωσης της περιβαλλοντικής διάστασης της βιώσιμης ανάπτυξης. Το βασικό συμπέρασμα του συνόλου της διατριβής είναι ότι στην πραγματικότητα η περιβαλλοντική και η οικονομική διάσταση της βιώσιμης ανάπτυξης συνδέονται. Προς την κατεύθυνση αυτή στο τελευταίο στάδιο της διατριβής σχεδιάστηκε ένα μεθοδολογικό εργαλείο που συμβάλλει στη λήψη στρατηγικών αποφάσεων από τις διοικήσεις των παραγωγικών συστημάτων
description: In this PhD Thesis we study a closed-loop supply chain with recycling and design for environment activities, which operates under the impact of sustainable development. The natural resources and the landfills are limited. Moreover, the legislation imposes measures for the operations of the closed-loop supply chain, which is also influenced by the green image and the consumers’ returns of used products back to the reverse supply chain. We use the System Dynamics Methodology to develop the dynamic model. The dynamic model is implemented into a real world closed-loop supply chain of electrical and electronic equipment in Greece. Statistical experiments are designed to study the interactions of the operations of the closed-loop supply chain with the economical and the environmental aspects of sustainability. Furthermore, the model is used as a methodological tool for the design of strategies that will promote sustainability. The most important conclusion of the study is that the economical aspect of sustainability depends on the environmental aspect of sustainability.
ROXA J081009.9+384757.0: a $10^{47}$ erg/s blazar with hard X-ray synchrotron peak or a new type of radio loud AGN?
Creators: name: Giommi, P.
name: Massaro, E.
name: Padovani, P.
name: Perri, M.
name: Cavazzuti, E.
name: Turriziani, S.
name: Tosti, G.
name: Colafrancesco, S.
name: Tagliaferri, G.
name: Chincarini, G.
name: Burrows, D. N.
name: Chester, M. McMath
name: Gehrels, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of ROXA J081009.9+384757.0 = SDSS J081009.9+384757.0, a z=3.95 blazar with a highly unusual Spectral Energy Distribution (SED). This object was first noticed as a probable high $f_x/f_r$, high-luminosity blazar within the error region of a $\approx 10^{-12}$ erg/s cm$^2$ ROSAT source which, however, also included a much brighter late-type star. We describe the results of a recent Swift observation that establishes beyond doubt that the correct counterpart of the X-ray source is the flat spectrum radio quasar. With a luminosity well in excess of $10^{47}$ erg/s, ROXA J081009.9+384757.0 is therefore one of the most luminous blazars known. We consider various possibilities for the nature of the electromagnetic emission from this source. In particular, we show that the SED is consistent with that of a blazar with synchrotron power peaking in the hard X-ray band. If this is indeed the case, the combination of high-luminosity and synchrotron peak in the hard-X-ray band contradicts the claimed anti-correlation between luminosity and position of the synchrotron peak usually referred to as the "blazar sequence". An alternative possibility is that the X-rays are not due to synchrotron emission, in this case the very peculiar SED of ROXA J081009.9+384757.0 would make it the first example of a new class of radio loud AGN.
description: 7 pages, 5 figures, A&A in press
MOESM3 of Optimization of incubation conditions of Plasmodium falciparum antibody multiplex assays to measure IgG, IgG1–4, IgM and IgE using standard and customized reference pools for sero-epidemiological and vaccine studies
Creators: name: Ubillos, Itziar
name: Jiménez, Alfons
name: Vidal, Marta
name: Bowyer, Paul
name: Gaur, Deepak
name: Dutta, Sheetij
name: Gamain, Benoit
name: Coppel, Ross
name: Chauhan, Virander
name: Lanar, David
name: Chitnis, Chetan
name: Angov, Evelina
name: Beeson, James
name: Cavanagh, David
name: Campo, Joseph
name: Aguilar, Ruth
name: Dobaño, Carlota
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3. Comparison of the IgG and IgG1–4 predicted curves between the WHO reference reagent and the WHO-CSP pool incubating at 4 °C ON. IgG and IgG1–4 predicted curves from a non-linear equation were measured against a 23-multiplex panel. Isolated dots represent the levels measured in the technical blanks.
Additional file 2 of Optimal dose determination of enerisant (TS-091) for patients with narcolepsy: two randomized, double-blind, placebo-controlled trials
Creators: name: Inoue, Yuichi
name: Uchiyama, Makoto
name: Umeuchi, Hideo
name: Onishi, Koichi
name: Ogo, Hiroki
name: Kitajima, Iwao
name: Matsushita, Isao
name: Nishino, Izumi
name: Uchimura, Naohisa
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 60506 Virology

description: Additional file 2. List of the ethics committees.
Low and High Energy Phenomenology of Quark-Lepton Complementarity Scenarios
Creators: name: Hochmuth, Kathrin A.
name: Rodejohann, Werner
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We conduct a detailed analysis of the phenomenology of two predictive see-saw scenarios leading to Quark-Lepton Complementarity. In both cases we discuss the neutrino mixing observables and their correlations, neutrinoless double beta decay and lepton flavor violating decays such as mu -> e gamma. We also comment on leptogenesis. The first scenario is disfavored on the level of one to two standard deviations, in particular due to its prediction for U_{e3}. There can be resonant leptogenesis with quasi-degenerate heavy and light neutrinos, which would imply sizable cancellations in neutrinoless double beta decay. The decays mu -> e gamma and tau -> mu gamma are typically observable unless the SUSY masses approach the TeV scale. In the second scenario leptogenesis is impossible. It is however in perfect agreement with all oscillation data. The prediction for mu -> e gamma is in general too large, unless the SUSY masses are in the range of several TeV. In this case tau -> e gamma and tau -> mu gamma are unobservable.
description: 32 pages, 9 figures. Discussion on leptogenesis changed due to inclusion of flavor effects. To appear in PRD
Composition Profiles within Al3Li and Al3Sc/Al3Li Nanoscale Precipitates in Aluminum
Creators: name: Krug, Matthew E.
name: Dunand, David C.
name: Seidman, David N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: An Al-11.3Li-0.11Sc (at. %) alloy was double-aged to induce first alpha'-Al3Sc and then delta'-Al3Li precipitates. Atom-probe tomography revealed both single-phase delta'-precipitates and core-shell alpha'/delta'-precipitates (with respective average radii of 16 and 27 nm, and respective volume fractions of 12 and 9%) conferring a high strength to the alloy. Although the delta'-shells contain little Sc (~0.027 at. %), the alpha'-cores have a high Li content, with an average composition of Al0.72(Sc0.17 Li0.11). The Li concentrations within the delta'-phase and the Li interfacial excess at the delta'/alpha'-interface both exhibit wide precipitate-to-precipitate variations.
description: 9 pages, 3 figures
Additional file 1 of A randomised controlled multicentre investigator-blinded clinical trial comparing efficacy and safety of surgery versus complex physical decongestive therapy for lipedema (LIPLEG)
Creators: name: Podda, Maurizio
name: Kovacs, Maximilian
name: Hellmich, Martin
name: Roth, Rebecca
name: Zarrouk, Marouan
name: Kraus, Daria
name: Prinz-Langenohl, Reinhild
name: Cornely, Oliver A.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. SPIRIT 2013 Checklist.
Gerhard Richter: η Γερμανία μετά στον πολέμο, η ζωγραφική μετά τη φωτογραφία
Creators: name: Καλδής, Παναγιώτης Β.
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Ριχτερ Γκερχαρντ
Μεταπολεμική Γερμανία
Ζωγραφική από φωτογραφία
Καπιταλισμός Ρεαλισμός
Ατλας
Καπιταλισμός ρεαλισμός
Richter Gerhard
Photo-pictures
Photography
Capitalist realism
Atlas
Grey picture

description: Ο Gerhard Richter είναι ένας από τους σημαντικότερους και γνωστότερους σύγχρονους καλλιτέχνες, κατά τη γνώμη μας. Ωστόσο στην εργασία μας αυτή δεν υποστηρίζουμε μόνο μια υποκειμενική αποτίμηση. Διερευνούμε ταυτόχρονα μια πολύπλοκη ιστορικά και καλλιτεχνική εποχή εντός της οποίας ο Ριχτερ διαμορφώνεται. Είναι η περίοδος των μεταπολεμικών εικαστικών εξελίξεων που επισυμβαίνουν σε αλληλεξάρτηση με τις νέες πραγματικότητες, πολιτικές, οικονομικές, κοινωνικές που σχηματίζονται τα χρόνια του 50 κακ του 60. Ενα από τα σημαντικότερα θέατρα αυτών των εξιλίξεων είναι η μεταπολεμική Γερμανία. Αυτά που συμβαίνουν στη Γερμανία μετά τον πόλεμο και ο τρόπος που η ζωγραφική επιβιώνει μετά τη φωτογραφία , συναντώνται στο έργο του Ρλιχτερ που εμφανίζεται, έτσι απότοκο και των δύο αυτών μεταβατικών καταστάσεων. Ο Ρίχτερ δοκιμάζει στο έργο του την αντοχή μορφών και στιλ που αισθάνεται πως λειτουργούν ακόμα. Τον κινητοποιεί όχι η ευκολία του μεταμοντερνισμού εκλεκτικισμού, αλλά ένα είδος αταβιστικού ζωγραφικού 'ενστίκτου' που αρνείται να θεωρήσει ξεπερασμένο.
description: Gerhard Richter is one of the best known and most important contemporary artists. Nevertheless, in this paper we do endearor to lend support to a personal aesthetic judjement, a subjective evaluation. We are, rather, endeavouring to compose it through a simulatnaeous investigation of an interesting and sufficiently complex historical and artist period, the one in which Richter himself was faschioned. The developments of this period(Germany after war-painting after photography) are both encountered in Richter's work, which is the outcome of these two transitional states. His work actively, and in a uniquely special way, participates in the developments of this profile period. Nevertheless, Richter's work goes far beyond the antagonistic opposition between painting and photography and has set forth a new intermediary space all its own
Smectics $A$ and $C$, and the Transition between them, in Uniaxial Disordered Environments
Creators: name: Chen, Leiming
name: Toner, John
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present a theory of the elasticity and fluctuations of the Smectic A and C phases in uniaxial, anisotropic disordered environments, e.g., stretched aerogel. We find that, bizarrely, the low-temperature, lower-symmetry Smectic $C$ phase is less translationally ordered than the high-temperature, higher-symmetry Smectic $A$ phase, with short-ranged "$m=1$ Bragg glass" and algebraic "XY Bragg glass" order, respectively. The $AC$ phase transition belongs to a new universality class, whose fixed points and exponents we find in a $d=5-ε$ expansion. We give very detailed predictions for the very rich light scattering behavior of both phases, and the critical point.
A Lightweight and Scalable Physical Layer Attack Detection Mechanism for the Internet of Things (IoT) Using Hybrid Security Schema
Creators: name: Fotohi, Reza
name: Pakdel, Hossein
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The Internet of Things, also known as the IoT, refers to the billions of devices around the world that are now connected to the Internet, collecting and sharing data. The amount of data collected through IoT sensors must be completely securely controlled. To protect the information collected by IoT sensors, a lightweight method called Discover the Flooding Attack-RPL (DFA-RPL) has been proposed. The proposed DFA-RPL method identifies intrusive nodes in several steps to exclude them from continuing routing operations. Thus, in the DFA-RPL method, it first builds a cluster and selects the most appropriate node as a cluster head in DODAG, then, due to the vulnerability of the RPL protocol to Flooding attacks, it uses an ant colony algorithm (ACO) using five steps to detect attacks. Use Flooding to prevent malicious activity on the IoT network. In other words, if it detects a node as malicious, it puts that node on the detention list and quarantines it for a certain period of time. The results obtained from the simulation show the superiority of the proposed method in terms of Packet Delivery Rate, Detection Rate, False Positive Rate, and False Negative Rate compared to IRAD and REATO methods.
description: 20 pages, 6 Figures, 8 Tables, Wireless Pers Commun (2021)
A note on Bayesian nonparametric priors derived from exponentially tilted Poisson-Kingman models
Creators: name: Cerquetti, Annalisa
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G57 (Primary) 60G09 (Secondary)

description: We derive the class of normalized generalized Gamma processes from Poisson-Kingman models (Pitman, 2003) with tempered alfa-stable mixing distribution. Relying on this construction it can be shown that in Bayesian nonparametrics, results on quantities of statistical interest under those priors, like the analogous of the Blackwell-MacQueen prediction rules or the distribution of the number of distinct elements observed in a sample, arise as immediate consequences of Pitman's results.
description: 9 pages
Φαινομενολογία και κοσμολογία υπερσυμμετρικών θεωριών
Creators: name: Βαμβασάκης, Αχιλλέας Ε.
Publisher: name: Aristotle University of Thessaloniki
Year: 2009
Subjects: Υπερσυμμετρία
Φαινομενολογία
Κοσμολογία
Πληθωρισμός
Φασματικός δείκτης
Supersymmetry
Phenomenology
Cosmology
Inflation
Spectral index
Pati-Salam

description: Βασικός στόχος της διατριβής ήταν η αναζήτηση πληθωριστικών μοντέλων, προερχόμενων υπό υπερσυμμετρικές θεωρίες, τα οποία να είναι συμβατά με πρόσφατα κοσμολογικά δεδομένα, και πιο συγκεκριμένα με τον φασματικό δείκτη όπως αυτός μετρήθηκε από τον δορυφόρο WMAP. Εξετάστηκε λεπτομερώς ως προς την κοσμολογία ένα υπάρχον σωματιδιακό μοντέλο, το επεκτεταμένο υπερσυμμετρικό μοντέλο Pati-Salam και Yukawa 'οιονεί-ενοποίηση' (quasi-unification) και βρέθηκε πως ενσωματώνει έναν αριθμό πληθωριστικών σεναρίων που οδηγούν σε αποτελέσματα συμβατά με τα πρόσφατα δεδομένα. Η μελέτη των σεναρίων αυτών έχει ερευνητικό ενδιαφέρον καθώς ανέδειξε παραλλαγές κοσμολογικών σεναρίων που μπορεί να είναι σημαντικά στην κοσμολογική έρευνα
description: One of the the major objectives of this dissertation has been the seek for inflationary models, coming from supersymmetric theories, which are compatible with recent cosmological data and more specifically with measurements of the spectral index from thw WMAP satellite. A particular particle physics model, the extended SUSY Pati-Salam model with Yukawa quasiunification, was examined thoroughly with respect to its cosmology and it was found that it incorporates a number of inflationary scenarios which can become compatible with recent data. The study of these scenarios os of interest since it brought out variations of cosmological models which might be important in cosmological research
Lattice specific heat of carbon nanotubes
Creators: name: Sparavigna, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The lattice specific heat of carbon nanotubes is evaluated within the microscopic model proposed by Mahan and Jeon, published in the Physical Review B, in 2004. Phonons are considered for a single wall carbon nanotube in the armchair configuration. As expected, low temperature and high temperature regions show different behavior of specific heat. Carbon nanotubes are also displaying a very interesting lattice transport depending on the diameter, with a rather high thermal conductivity for small diameters.
description: 5 pages, 3 figures
Searching for hidden AGN in nearby star-forming galaxies with Chandra
Creators: name: Tzanavaris, P.
name: Georgantopoulos, I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (ABRIDGED) AIMS: We searched for X-ray signatures of AGN in a sample of star-forming, relatively early-type, nearby spiral galaxies. Such galaxies are likely to host nuclear super-massive black holes. METHODS: For 9 sources from the Ho et al. optical sample, we isolated 10 individual Chandra X-ray sources closest to the optical position and calculated X-ray luminosities, Lx, X-ray colours, and, using Halpha luminosities, star formation rates. For 4 sources with sufficient counts, we extracted X-ray spectra and fitted standard spectral models. We assessed the significance of adding an Fe K alpha emission Gaussian component to a fit by means of a calibration of the standard F-test. For the rest of the sources, we estimated values for the intrinsic hydrogen column density, NHint, and the power-law photon index, Gamma, which can reproduce the observed X-ray colours. RESULTS: For the nuclear sources in NGC 2782 and NGC 3310, a Fe K alpha emission-line component is included with high significance, whilst the power-law is flat (Gamma~0 and 1.3). Both sources have high star-formation rates, with the rate for NGC 2782 being the highest in our sample. CONCLUSIONS: Our detection of Fe K alpha emission coming from a central, isolated source points towards a hidden AGN in 2 out of 9 relatively early-type, star-forming spirals. The presence of an AGN is thus likely in massive, disturbed starbursts, although the X-ray contribution is small: For the central source, the bolometric luminosity is a fraction of a few x 10^-5 of the Eddington luminosity. The X-ray flux of the central source is between 10 and 20% of the total galactic flux in the 0.2-10 keV band.
description: 16 pages, 4 tables, 7 figures. Accepted for publication in A&A
Radiatively generated fermion mass hierarchy from flavour non-universal gauge symmetries
Creators: name: Mohanta, Gurucharan
name: Patel, Ketan M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A framework based on a class of abelian gauge symmetries is proposed in which the masses of only the third generation quarks and leptons arise at the tree level. The fermions of the first and second families receive their masses through radiative corrections induced by the new gauge bosons in the loops. It is shown that the class of abelian symmetries which can viably implement this mechanism are flavour non-universal in nature. Taking the all-fermion generalization of the well-known leptonic $L_μ-L_τ$ and $L_e - L_μ$ symmetries, we construct an explicit renormalizable model based on two $U(1)$ which is shown to reproduce the observed fermion mass spectrum of the Standard Model. The first and second generation fermion masses are loop suppressed while the hierarchy between these two generations results from a gap between the masses of two vector bosons of the extended gauge symmetries. Several phenomenological aspects of the flavourful new physics are discussed and lower limits on the masses of the vector bosons are derived.
description: 22 pages, 4 tables, 1 figure; v2: a sign and solutions corrected, results unchanged, references added; v3: minor changes, published version
The efficiencies of generating cluster states with weak non-linearities
Creators: name: Louis, Sebastien G. R.
name: Nemoto, Kae
name: Munro, W. J.
name: Spiller, T. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a scalable approach to building cluster states of matter qubits using coherent states of light. Recent work on the subject relies on the use of single photonic qubits in the measurement process. These schemes can be made robust to detector loss, spontaneous emission and cavity mismatching but as a consequence the overhead costs grow rapidly, in particular when considering single photon loss. In contrast, our approach uses continuous variables and highly efficient homodyne measurements. We present a two-qubit scheme, with a simple bucket measurement system yielding an entangling operation with success probability 1/2. Then we extend this to a three-qubit interaction, increasing this probability to 3/4. We discuss the important issues of the overhead cost and the time scaling. This leads to a "no-measurement" approach to building cluster states, making use of geometric phases in phase space.
description: 21 pages, to appear in special issue of New J. Phys. on "Measurement-Based Quantum Information Processing"
Inclination-Independent Galaxy Classification
Creators: name: Bailin, Jeremy
name: Harris, William E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a new method to classify galaxies from large surveys like the Sloan Digital Sky Survey using inclination-corrected concentration, inclination-corrected location on the color-magnitude diagram, and apparent axis ratio. Explicitly accounting for inclination tightens the distribution of each of these parameters and enables simple boundaries to be drawn that delineate three different galaxy populations: Early-type galaxies, which are red, highly concentrated, and round; Late-type galaxies, which are blue, have low concentrations, and are disk dominated; and Intermediate-type galaxies, which are red, have intermediate concentrations, and have disks. We have validated our method by comparing to visual classifications of high-quality imaging data from the Millennium Galaxy Catalogue. The inclination correction is crucial to unveiling the previously unrecognized Intermediate class. Intermediate-type galaxies, roughly corresponding to lenticulars and early spirals, lie on the red sequence. The red sequence is therefore composed of two distinct morphological types, suggesting that there are two distinct mechanisms for transiting to the red sequence. We propose that Intermediate-type galaxies are those that have lost their cold gas via strangulation, while Early-type galaxies are those that have experienced a major merger that either consumed their cold gas, or whose merger progenitors were already devoid of cold gas (the ``dry merger'' scenario).
description: Accepted for publication in ApJ. 7 pages in emulateapj
Additional file 1 of Promotion of microRNA-146a by histone deacetylase 4 silencing contributes to radiosensitization of esophageal carcinoma
Creators: name: Lu, Zhonghua
name: Yun, Yifei
name: Zhang, Yutong
name: Ou, Yao
name: Wang, Meihua
Publisher: name: figshare
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 1: Table S1. Primer sequences for RT-qPCR
Longitudinal Wake Field for an Electron Beam Accelerated through a Ultra-High Field Gradient
Creators: name: Geloni, Gianluca
name: Saldin, Evgeni
name: Schneidmiller, Evgeni
name: Yurkov, Mikhail
Publisher: name: arXiv
Year: 2006
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Electron accelerators with higher and higher longitudinal field gradients are desirable, as they allow for the production of high energy beams by means of compact and cheap setups. The new laser-plasma acceleration technique appears to constitute the more promising breakthrough in this direction, delivering unprecedent field gradients up to TV/m. In this article we give a quantitative description of the impact of longitudinal wake fields on the electron beam. Our paper is based on the solution of Maxwell's equations for the longitudinal field. Our conclusions are valid when the acceleration distance is much smaller than the the overtaking length, that is the length that electrons travel as a light signal from the tail of the bunch overtakes the head of the bunch. This condition is well verified for laser-plasma devices. We calculate a closed expression for the impedance and the wake function that may be evaluated numerically. It is shown that the rate of energy loss in the bunch due to radiative interaction is equal to the energy emitted through coherent radiation in the far-zone. Furthermore, an expression is found for the asymptotic limit of a large distance of the electron beam from the accelerator compared with the overtaking length. Such expression allows us to calculate analytical solutions for a Gaussian transverse and longitudinal bunch shape. Finally, we study the feasibility of Table-Top Free-Electron Lasers in the Vacuum Ultra-Violet (TT-VUV FEL) and X-ray range (TT-XFEL), respectively based on 100 MeV and 1 GeV laser-plasma accelerator drivers. Numerical estimations presented in this paper indicate that the effects of the time-dependent energy change induced by the longitudinal wake pose a serious threat to the operation of these devices.
description: 41 pages, 10 figures
How accurate is Limber's equation?
Creators: name: Simon, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The so-called Limber equation is widely used in the literature to relate the projected angular clustering of galaxies to the spatial clustering of galaxies in an approximate way. This paper gives estimates of where the regime of applicability of Limber's equation stops. Limber's equation is accurate for small galaxy separations but breaks down beyond a certain separation that depends mainly on the ratio sigma/R and to some degree on the power-law index, gamma, of spatial clustering xi; sigma is the one-sigma width of the galaxy distribution in comoving distance, and R the mean comoving distance. As rule-of-thumb, a 10% relative error is reached at 260 sigma/R arcmin for gamma~1.6, if the spatial clustering is a power-law. More realistic xi are discussed in the paper. Limber's equation becomes increasingly inaccurate for larger angular separations. Ignoring this effect and blindly applying Limber's equation can possibly bias results for the inferred spatial correlation. It is suggested to use in cases of doubt, or maybe even in general, the exact equation that can easily be integrated numerically in the form given in the paper.
description: revised (extended) version, 8 pages, 4 figures, accepted by A&A as shortened version
Linear shear flow past a hemispherical droplet adhering to a solid surface
Creators: name: Sugiyama, K.
name: Sbragaglia, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Astrophysics (astro-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This paper investigates the properties of a three dimensional shear flow overpassing a hemispherical droplet resting on a plane wall. The exact solution is computed as a function of the viscosity ratio between the droplet and the surrounding fluid and generalizes the solution for the hemispherical no-slip bump given in an earlier paper by Price (1985). Several expressions including the torque and the force acting on the drop will be considered as well as the importance of the deformations on the surface for small Capillary numbers.
description: 10 figures, Accepted for publication in Journal of Engineering Mathematics
Galaxy Clusters in the Radio: Relativistic Plasma and ICM/Radio Galaxy Interaction Processes
Creators: name: Feretti, Luigina
name: Giovannini, Gabriele
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The organization of this paper is as follows: the basic formulae used to derive the age of synchrotron sources and the equipartition parameters are presented in Section 2, while the observational properties of diffuse radio sources (Radio halos, Radio relics, and Mini-halos) are presented in Section 3. Then in Section 4 we give a general outline of the models of the relativistic particle origin and re-acceleration; while the current results on cluster magnetic fields are described in Section 5. Finally, Section 6 reports the properties of cluster radio emitting galaxies.
description: Lecture given by L. Feretti at the International Advanced School in Inaoe, Tonantzintla-Puebla, Mexico, 27th June - 8th July, 2005. To be published in Springer Lecture Notes in Physics, "Panchromatic View of Clusters of Galaxies and the Large-Scale Structure", Editors M. Plionis, O. Lopez-Cruz, abd D. Hughes
Supersymmetric quantum mechanical generalized MIC-Kepler system
Creators: name: Giri, Pulak Ranjan
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct supersymmetric (SUSY) generalized MIC-Kepler system and show that the systems with half integral Dirac quantization condition μ= \pm{1/2}, \pm{3/2}, \pm{5/2},..... belong to a SUSY family (hierarchy of Hamiltonian) with same spectrum between the respective partner Hamiltonians except for the ground state. Similarly, the systems with integral Dirac quantization condition μ=\pm 1,\pm 2, \pm 3,...... belong to another family. We show that, it is necessary to introduce additional potential to MIC-Kepler system in order to unify the two families into one. We also reproduce the results of the (super-symmetric) Hydrogenic problem in our study.
description: 8 pages, Latex, No figure
Stueckelberg Mechanism and Chiral Lagrangian for $Z'$ Boson
Creators: name: Zhang, Ying
name: Wang, Shun-Zhi
name: Wang, Qing
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Traditional Stueckelberg Mechanism is shown equivalent to set up a gauged U(1) chiral Lagrangian and fix special gauge. With this mechanism, the original electro-weak chiral Lagrangian is inlarged by including an extra U(1) symmetry to represent physics for $Z'$ boson. We build up complete list of electro-weak chiral Lagrangian up to order of $p^4$ including $Z'$ and higgs bosons. The most general mixing among neutral gauge bosons is diagonalized completely and the connections among these operators to triple, quartic couplings involving $Z'$ boson and to that in traditional electro-weak chiral Lagrangian are made.
description: 23 pages
Global prevalence of prolonged gastrointestinal symptoms in COVID-19 survivors and potential pathogenesis - A systematic review and meta-analysis
Creators: name: Harapan Harapan
name: Fauzi Yusuf
Publisher: name: figshare
Year: 2021
Subjects: subject: 110804 Medical Virology
subject: FOS: Health sciences

description: This a PRISMA checklist for article entitles: Global prevalence of prolonged gastrointestinal symptoms in COVID-19 survivors and potential pathogenesis - A systematic review and meta-analysis, by Fauzi yusuf et al from School of Medicine, Universitas Syiah Kuala (USK), Banda Aceh, Indonesia in collaboration with Narra Studio Jurnal Indonesia.
Design of High-Quality Reflectors for Vertical Nanowire Lasers on Si
Creators: name: Zhang, Xing
name: Yang, Hui
name: Zhang, Yunyan
name: Liu, Huiyun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Nanowires (NWs) with a unique one-dimensional structure can monolithically integrate high-quality III-V semiconductors onto Si platform, which is highly promising to build lasers for Si photonics. However, the lasing from vertically-standing NWs on silicon is much more difficult to achieve compared with NWs broken off from substrates, causing significant challenges in the integration. Here, the challenge of achieving vertically-standing NW lasers is systematically analyzed. The poor optical reflectivity at the NW/Si interface results severe optical field leakage to the substrate, and the commonly used SiO2 or Si2N3 dielectric mask at the interface can only improve it to ~10%, which is the major obstacle for achieving low-threshold lasing. A NW super lattice distributed Bragg reflector is therefore proposed, which is able to greatly improve the reflectivity to >97%. This study provides a highly-feasible method to greatly improve the performance of vertically-standing NW lasers, which can boost the rapid development of Si photonics.
description: 5