cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Xmm-Newton Observations of the Diffuse X-ray Background
Creators: name: Galeazzi, M.
name: Gupta, A.
name: Covey, K.
name: Ursino, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyzed two XMM-Newton observations in the direction of the high density, high latitude, neutral hydrogen cloud MBM20 and of a nearby low density region that we called the Eridanus hole. The cloud MBM20 is at a distance evaluated between 100 and 200 pc from the Sun and its density is sufficiently high to shield about 75% of the foreground emission in the 3/4 keV energy band.The combination of the two observations makes possible an evaluation of the OVII and OVIII emission both for the foreground component due to the Local Bubble,and the background one, due primary to the galactic halo.The two observations are in good agreement with each other and with ROSAT observations of the same part of the sky and the OVII and OVIII fluxes are OVII=3.89+/-0.56 photons cm^-2 s^-1 sr^-1, OVIII=0.68+/-0.24 photons cm^-2 s^-1 sr^-1 for MBM20 and OVII=7.26+/-0.34 photons cm^-2 s^-1 sr^-1,OVIII=1.63+/-0.17 photons cm^-2 s^-1 sr^-1 for the Eridanus hole. The spectra are in agreement with a simple three component model, one unabsorbed and one absorbed plasma component, and a power law, without evidence for any strong contamination from ion exchange in the solar system. Assuming that the two plasma components are in thermal equilibrium we obtain a temperature of 0.096 keV for the foreground component and 0.197 keV for the background one. Assuming the foreground component is due solely to Local Bubble emission we obtain a lower and upper limit for the plasma density of 0.0079 cm^-3 and 0.0095 cm^-3 and limits of 16,200 cm^-3 K and 19,500 cm^-3 K for the plasma pressure, in good agreement with theoretical predictions. Similarly, assuming that the absorbed plasma component is due to Galactic halo emission, we obtain a plasma density ranging from 0.0009 cm^-3 to 0.0016 cm^-3, and a pressure ranging from 3.0*10^3 to 6.7*10^3 cm^-3 K.
description: 31 pages, 5 figures, Accepted for publication in ApJ
การพัฒนาแบบทดสอบวัดสมรรถนะนักศึกษาครุศาสตร์/ศึกษาศาสตร์ ตามมาตรฐานวิชาชีพครูที่มีการตรวจให้คะแนนแบบพหุวิภาค
Creators: name: สุกัญญา ทองนาค
name: ศิริชัย กาญจนวาสี
name: สุพจน์ เกิดสุวรรณ์
Publisher: name: มหาวิทยาลัยราชภัฏสวนดุสิต
Year: 2556
Subjects: แบบทดสอบวัดสมรรถนะนักศึกษา,มตรฐานวิชาชีพ,การตรวจให้คะแนนแบบพหุวิภาค

description: 1, 9, วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Black Hole in a Model with Dilaton and Monopole Fields
Creators: name: Kyriakopoulos, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present an exact black hole solution in a model having besides gravity a dilaton and a monopole field. The solution has three free parameters, one of which can be identified with the monopole charge, and another with the ADM mass. The metric is asymptotically flat and has two horizons and irremovable singularity only at $r=0$. The dilaton field is singular only at $r=0$. The dominant and the strong energy condition are satisfied outside and on the external horizon. According to a formulation of the no hair conjecture the solution is "hairy". Also the well know GHS-GM solution is obtained from our solution for certain values of its parameters.
description: Selected for Honorable Mention in the Gravity Research Foundation Essay Competition, 2006, 7 pages
The moduli space of non-Abelian vortices in Yang-Mills-Chern-Simons-Higgs theory
Creators: name: Gudnason, Sven Bjarke
name: Eto, Minoru
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We determine the dimension of the moduli space of non-Abelian vortices in Yang-Mills-Chern-Simons-Higgs theory in 2+1 dimensions for gauge groups $G=({\rm U}(1)\times G')/\mathbb{Z}_{n_0}$ with $G'$ being an arbitrary semi-simple group and $n_0$ the greatest common divisor of the Abelian charges of the $G'$ invariants. The calculation is carried out using a Callias-type index theorem, the moduli matrix approach and a D-brane setup in Type IIB string theory. We prove that the index theorem gives the number of zeromodes or moduli of the non-Abelian vortices, extend the moduli matrix approach to the Yang-Mills-Chern-Simons-Higgs theory and finally derive the effective Lagrangian of Collie and Tong using string theory.
description: LaTeX: 32 pages, 2 figures; V2: comments added and typos corrected
Decoherence of two qubit systems: A random matrix description
Creators: name: Pineda, C.
name: Gorin, T.
name: Seligman, T. H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study decoherence of two non-interacting qubits. The environment and its interaction with the qubits are modelled by random matrices. Decoherence, measured in terms of purity, is calculated in linear response approximation. Monte Carlo simulations illustrate the validity of this approximation and of its extension by exponentiation. The results up to this point are also used to study one qubit decoherence. Purity decay of entangled and product states are qualitatively similar though for the latter case it is slower. Numerical studies for a Bell pair as initial state reveal a one to one correspondence between its decoherence and its internal entanglement decay. For strong and intermediate coupling to the environment this correspondence agrees with the one for Werner states. In the limit of a large environment the evolution induces a unital channel in the two qubits, providing a partial explanation for the relation above.
description: 32 pages, 11 figures
Ultracold heteronuclear molecules in a 3D optical lattice
Creators: name: Ospelkaus, C.
name: Ospelkaus, S.
name: Humbert, L.
name: Ernst, P.
name: Sengstock, K.
name: Bongs, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report on the creation of ultracold heteronuclear molecules assembled from fermionic 40K and bosonic 87Rb atoms in a 3D optical lattice. Molecules are produced at a heteronuclear Feshbach resonance both on the attractive and the repulsive side of the resonance. We precisely determine the binding energy of the heteronuclear molecules from rf spectroscopy across the Feshbach resonance. We characterize the lifetime of the molecular sample as a function of magnetic field and measure between 20 and 120ms. The efficiency of molecule creation via rf association is measured and is found to decrease as expected for more deeply bound molecules.
description: 4 pages, 4 figures
Quark droplets with chiral symmetry in the Nambu--Jona-Lasinio model
Creators: name: Yasui, S.
name: Hosaka, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the stability of strangelets by considering dynamical chiral symmetry breaking. For quark droplets of finite volume, we formulate the Nambu--Jona-Lasinio model with a basis set of the quark wave functions in the chiral bag model. Chiral symmetry breaking for the finite volume bag is discussed in a mean field approximation. Effects of the pion cloud including the chiral Casimir effect are investigated. Physical quantities of the quark droplets such as masses and radii are obtained for quark droplets of baryon numbers up to five. We also apply our model setting to the nucleon and discuss the stability of the quark droplets against nuclei.
Nucleon resonance decay by the $K^0Σ^+$ channel
Creators: name: al., R. Castelijns et
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Hyperon production off the proton in the $K^0 Σ^+$ channel has been studied at the tagged photon beam facility at the ELSA electron accelerator in Bonn. This experiment was part of a series of neutral meson production experiments on various targets. For this purpose, the Crystal Barrel and TAPS photon spectrometers have been combined to provide a $4 π$ detector for multi-neutral-particle final states. A high-quality excitation function, recoil polarizations, and angular distributions from threshold up to 2.3 GeV center-of-mass energy were obtained. The results are compared with predictions of recent coupled-channels calculations within the K-matrix formalism and are interpreted by the partial-wave analysis within the Bonn-Gatchina model.
description: 6 pages, 5 figures, submitted to EPJA
Additional file 1 of Responses of healthy young males to fine-particle exposure are modified by exercise habits: a panel study
Creators: name: Chen, Xi
name: Chen, Wu
name: Wang, Yanwen
name: Han, Yiqun
name: Zhu, Tong
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified

description: Table S1. Pearson correlation coefficients among air pollutants. Table S2. Pearson correlation coefficients among health outcomes. Table S3. Percent changes (Î˛) in biomarkers per IQR increases in UFP, with further adjustment for multiple confounders. Table S4. Studies concerning the effects of particles exposure on FeNO, aortic augmentation pressure, and aortic pressure index in healthy young adults. Figure S1-S7. Percent changes in FeNO, IL-2, SBP, DBP, ejection duration, aortic augmentation pressure and aortic pressure index per IQR increases in particles exposure in single pollutant models, respectively. Figure S8. Percent changes in A) aortic pressure index, B) aortic augmentation pressure, C) ejection duration, D) FeNO per IQR increases in particles exposure in two-pollutant models. Figure S9-S11. Percent changes in FeNO with the IQR increases in concentrations of PM2.5 and its constituents stratified by exercise place, BMI, and BFR. Fig. S12-S15. Percent changes in IL-2 with the IQR increases in concentrations of PM2.5 and its constituents stratified by exercise frequency, exercise place, BMI, and BFR. Figure S16-S19. Percent changes in SBP with the IQR increases in concentrations of PM2.5 and its constituents stratified by exercise frequency, exercise place, BMI, and BFR. Figure S20-S23. Percent changes in DBP with the IQR increases in concentrations of PM2.5 and its constituents stratified by exercise frequency, exercise place, BMI, and BFR. Figure S24-S27. Percent changes in ejection duration with the IQR increases in concentrations of PM2.5 and its constituents stratified by exercise frequency, exercise place, BMI, and BFR. Figure S28-S29. percent changes in aortic augmentation pressure with the IQR increases in concentrations of PM2.5 and its constituents stratified by BMI and BFR. Figure S30-S33. percent changes in aortic pressure index with the IQR increases in concentrations of PM2.5 and its constituents stratified by exercise frequency, exercise place, BMI, and BFR. (DOCX 3760 kb)
Le savant et son époque à travers sa correspondance
Creators: name: Franssen, Elise
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2019

description:

This article proposes a survey of two great scholars’ in Arabic literature correspondances: a European of the 20th century, Seeger Adrianus Bonebakker, who is of special interest for us because he bequeathed all of his great library, personal notes and correspondance to the Università Ca’ Foscari, and a subject of study of the former, Ḫalīl b. Aybak al-Ṣafadī, great littérateur and scholar of the first century of the Mamluk period. Letters sent and received are preserved in both cases and are primary sources on their network, but also on their personal life, personnality and methodology.

description: Annali di Ca’ Foscari. Serie orientale
Αφηγηματικοί χάρτες (story maps) διαδικτύου και αρχειακή μνήμη: Ανάδειξη 'κρυμμένων' ιστοριών και τεκμηρίων μετανάστευσης εποχής μεσοπολέμου, από τη μελέτη αρχειακού υλικού ενός Ναυτικού Πρακτορείου, με έδρα τον Πειραιά
Creators: name: Θεοδωρίδου, Σοφία Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Aφηγηματικοί χάρτες διαδικτύου
Aρχειακή μνήμη
Mετανάστευση μεσοπολέμου
Narrative web maps
Archival memory
Interwar migration

description: Αντικείμενο της διπλωματικής εργασίας είναι ο νοηματικός σχεδιασμός μιας ψηφιακής έκθεσης με θέμα την υπερπόντια μετανάστευση κατά την περίοδο του Μεσοπολέμου, όπως αυτή προκύπτει μέσα από τη δραστηριότητα ενός ναυτικού πρακτορείου με έδρα τον Πειραιά. Το προς πραγμάτευση υλικό της συλλογής προέκυψε από αρχειακά τεκμήρια του Ναυτικού Πρακτορείου Πέτρου και Κωνσταντίνου Τσίμπη, τα οποία διασώθηκαν και φυλάσσονται στο Ελληνικό Λογοτεχνικό και Ιστορικό Αρχείο του Μορφωτικού Ιδρύματος Εθνικής Τραπέζης (ΕΛΙΑ-ΜΙΕΤ). Η αφηγηματική πορεία της έκθεσης στηρίζεται σε διαδικτυακή τεχνολογία και σε καινοτόμες τεχνικές αφηγηματικών χαρτών (story maps).
description: The subject of the thesis is the conceptual design of a digital exhibition on overseas migration in the Interwar Years, as a result of a Piraeus Naval Agency’s. The material of the collection was derived from archival records of Petros and Konstantinos Tsimpis Naval Agency, which were preserved and kept in the Hellenic Literary and Historical Archive of the Cultural Foundation of the National Bank of Greece (ELIA-MIET). The narrative course is supported by web technology of innovative narrative mapping tools (story maps).
description: Σε συνεργασία με: Παιδαγωγικό Δημοτικής Εκπαίδευσης (Πανεπιστήμιο Δυτικής Μακεδονίας)
Prioritizing Original News on Facebook
Creators: name: Ni, Xiuyan
name: Bu, Shujian
name: Markov, Igor L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Digital Libraries (cs.DL)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This work outlines how we prioritize original news, a critical indicator of news quality. By examining the landscape and life-cycle of news posts on our social media platform, we identify challenges of building and deploying an originality score. We pursue an approach based on normalized PageRank values and three-step clustering, and refresh the score on an hourly basis to capture the dynamics of online news. We describe a near real-time system architecture, evaluate our methodology, and deploy it to production. Our empirical results validate individual components and show that prioritizing original news increases user engagement with news and improves proprietary cumulative metrics.
description: 9 pages, 8 figures, 6 tables, 2 algorithm pseudocodes
Texto: O menino que viu
Creators: name: Nãpjoku, Bartolo
name: Bardagil Mas, Bernat
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: Manoki language

description: Bartolo Nãpjoku conta a história do menino que viu os jeta. Primeiro em mỹkỹ e depois em português.
Bartolo Nãpjoku tells the myth of the child who saw the jeta. First in Mỹky and then in Portuguese.
การจัดกิจกรรมการเคลื่อนไหวร่วมกับการใช้ประสาทการรับรู้เพื่อส่งเสริมทักษะ กล้ามเนื้อมัดใหญ่ของเด็กพิการซ้อนอายุ 3-5 ปี
Creators: name: เมธาพร ยะดอนใจ
Publisher: name: มหาวิทยาลัยราชภัฏสวนดุสิต
Year: 2556
Subjects: เด็กพิการซ้อน,กิจกรรมการเคลื่อนไหว,ประสาทการรับรู้

description: 1, 9, วารสารวิจัย มสด สาขามนุษยศาสตร์และสังคมศาสตร์
Il terzo stadio dell’imparare
Creators: name: Facchin, Andrea
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2019

description:

In 1983 the eminent Egyptian linguist Tammām Ḥassān (1918-2011) wrote al-Tamhīd fī iktisāb al-luġa al-ʿarabiyya li-ġayr al-nāṭiqīn bi-hā (Introduction to the Acquisition of Arabic Language by Non Arabic Speakers), an essential work in the field of Teaching Arabic as a Foreign Language, where he theorised his three-level approach for the acquisition of Arabic language by non Arabs consisting of the first level of knowledge, the second of comprehension and the third, the ‘enjoyment level’ (marḥalat al-istimtāʿ). The aim of the study is to shed light on the third level of language acquisition, which allows learners to detect the beauty of a text and results particularly interesting since it considers certain aspects that characterise Arabic language specificity and legacy such as literary taste (taḏawwuq adabī), stylistic embellishments, figures of speech, etc.

description: Annali di Ca’ Foscari. Serie orientale
The Peregrinations of panjgāh
Creators: name: Wright, Owen
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2019

description:

One of the more durable elements in the modal repertoires of the art-music traditions of the Middle East and Central Asia, panjgāh has a recorded history going back to the beginning of the fourteenth century, and all major theoretical texts of the following centuries refer to it. Discussed here is the documentation of its emergence, diffusion and morphological development, leading to a presentation and comparison of contemporary forms from Turkey to Xinjiang, manifestly diverse but in several cases still demonstrably related.

description: Annali di Ca’ Foscari. Serie orientale
Schsphenines A and B, two new lignans from the fruit of Schisandra sphenanthera with cardioprotective Activities
Creators: name: Yu, Jinyu
name: Yu, Wen
name: Wu, Xingan
name: Han, Jing
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Virology

description: Schsphenines A (1) and B (2), two new lignans were isolated from the fruit of Schisandra sphenanthera, together with six known ones respectively identified as schisanhenol (3), methylgomisin O (4), wuweilignan E (5), neglschisandrin E (6), schisandrin A (7) and schisandrin B (8). The structures of isolated compounds were determined by UV, IR, HR-ESI-MS, NMR, ORD analysis and quantum chemical calculation. The in vitro cardioprotective activities of all compounds were studied on H2O2-injury H9C2 cells using the MTT method. Compound 1 exhibited a considerable protective effect with cell viability in 79.94 ± 2.36%. This research provided useful information for the utilisation of S. sphenanthera as the TCM.
Viscous force exerted on a foam at a solid boundary : influence of the liquid fraction and of the bubble size
Creators: name: Terriac, Emmanuel
name: Etrillard, Janine
name: Cantat, Isabelle
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study experimentally the pressure drop needed to push a bubble train in a millimetric channel, as a function of the velocity. For dry liquid foams, the influence of the amount of liquid and of the bubble size is pointed out and we predict theoretically that this influence is closely related to the power law obtained for the force/velocity relation. This model is in fair agreement with our experimental data and provides a new interpretation of previous results.
Fast galaxy bars continue to challenge standard cosmology
Creators: name: Roshan, Mahmood
name: Ghafourian, Neda
name: Kashfi, Tahere
name: Banik, Indranil
name: Haslbauer, Moritz
name: Cuomo, Virginia
name: Famaey, Benoit
name: Kroupa, Pavel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Many observed disc galaxies harbour a central bar. In the standard cosmological paradigm, galactic bars should be slowed down by dynamical friction from the dark matter halo. This friction depends on the galaxy's physical properties in a complex way, making it impossible to formulate analytically. Fortunately, cosmological hydrodynamical simulations provide an excellent statistical population of galaxies, letting us quantify how simulated galactic bars evolve within dark matter haloes. We measure bar strengths, lengths, and pattern speeds in barred galaxies in state-of-the-art cosmological hydrodynamical simulations of the IllustrisTNG and EAGLE projects, using techniques similar to those used observationally. We then compare our results with the largest available observational sample at redshift $z=0$. We show that the tension between these simulations and observations in the ratio of corotation radius to bar length is $12.62σ$ (TNG50), $13.56σ$ (TNG100), $2.94σ$ (EAGLE50), and $9.69σ$ (EAGLE100), revealing for the first time that the significant tension reported previously persists in the recently released TNG50. The lower statistical tension in EAGLE50 is actually caused by it only having 5 galaxies suitable for our analysis, but all four simulations give similar statistics for the bar pattern speed distribution. In addition, the fraction of disc galaxies with bars is similar between TNG50 and TNG100, though somewhat above EAGLE100. The simulated bar fraction and its trend with stellar mass both differ greatly from observations. These dramatic disagreements cast serious doubt on whether galaxies actually have massive cold dark matter haloes, with their associated dynamical friction acting on galactic bars.
description: v3: Improved version accepted in MNRAS; Few typos fixed and one reference added
I ki hezar aferin bon nidge Sultan olur
Creators: name: De Zorzi, Giovanni
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2019

description:

Between the sixteenth century and the eighteenth century many Europeans visited Constantinople, the new Ottoman capital, and wrote reports that took various aspects of its cultural and musical life into consideration. Among the recurring elements of such reports, we note the description of Dervishes and their ceremonies, often accompanied by engravings and very rarely by musical transcriptions. Through time, such a description became a topic (and a stereotype) both in literature and in fine arts. My article retraces and comments descriptions of Dervish ceremonies, in a chronological order, by Western travellers and scholars between sixteenth and eighteenth century, between the so-called Age of Exploration and Modernity.

description: Annali di Ca’ Foscari. Serie orientale
Tensor Forces and the Ground-State Structure of Nuclei
Creators: name: Schiavilla, R.
name: Wiringa, R. B.
name: Pieper, Steven C.
name: Carlson, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Two-nucleon momentum distributions are calculated for the ground states of nuclei with mass number $A\leq 8$, using variational Monte Carlo wave functions derived from a realistic Hamiltonian with two- and three-nucleon potentials. The momentum distribution of $np$ pairs is found to be much larger than that of $pp$ pairs for values of the relative momentum in the range (300--600) MeV/c and vanishing total momentum. This order of magnitude difference is seen in all nuclei considered and has a universal character originating from the tensor components present in any realistic nucleon-nucleon potential. The correlations induced by the tensor force strongly influence the structure of $np$ pairs, which are predominantly in deuteron-like states, while they are ineffective for $pp$ pairs, which are mostly in $^1$S$_0$ states. These features should be easily observable in two-nucleon knock-out processes, such as $A(e,e^\prime np)$ and $A(e,e^\prime pp)$.
description: 4 pages including 3 figures
Algeria and the Washington Consensus: Debtor-Creditor Relation Re-Examined
Creators: name: Leopardi, Francesco Saverio
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2019

description:

Algeria’s experience with liberal economic reforms occurred while the country faced its worst crisis due to the civil conflict between the army and Islamist insurgents. The study of Algeria’s debt relief process, from loan negotiation to the implementation of adjustment packages, is key to understand how the aid received enabled the Algerian authorities to survive the crisis and renew their patronage networks. Focusing on Algerian relation with International Financial Institutions, this paper provides a political analysis of this process. As a result, the creditors’ favour for stabilisation and their political priorities emerge as factors that increased the leverages of the Algerian authorities.

description: Annali di Ca’ Foscari. Serie orientale
Trapping and observing single atoms in the dark
Creators: name: Puppe, T.
name: Schuster, I.
name: Grothe, A.
name: Kubanek, A.
name: Murr, K.
name: Pinkse, P. W. H.
name: Rempe, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A single atom strongly coupled to a cavity mode is stored by three-dimensional confinement in blue-detuned cavity modes of different longitudinal and transverse order. The vanishing light intensity at the trap center reduces the light shift of all atomic energy levels. This is exploited to detect a single atom by means of a dispersive measurement with 95% confidence in 0.010 ms, limited by the photon-detection efficiency. As the atom switches resonant cavity transmission into cavity reflection, the atom can be detected while scattering about one photon.
Discussion: The Dantzig selector: Statistical estimation when $p$ is much larger than $n$
Creators: name: Bickel, Peter J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Discussion of "The Dantzig selector: Statistical estimation when $p$ is much larger than $n$" [math/0506081]
description: Published in at http://dx.doi.org/10.1214/009053607000000424 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Texto: A flecha da cobra
Creators: name: Nãpjoku, Bartolo
name: Bardagil Mas, Bernat
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: Manoki language

description: Bartolo Nãpjoku conta a história do homem que ganhou um flecha mágica da cobra. Primeiro em mẽke e depois em português.
Bartolo Nãpjoku tells the myth of the man who was given magical arrow by the snake. First in Mỹky and then in Portuguese.
Mapping the NFT revolution: market trends, trade networks and visual features
Creators: name: Nadini, Matthieu
name: Alessandretti, Laura
name: Di Giacinto, Flavio
name: Martino, Mauro
name: Aiello, Luca Maria
name: Baronchelli, Andrea
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Computers and Society (cs.CY)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Non Fungible Tokens (NFTs) are digital assets that represent objects like art, collectible, and in-game items. They are traded online, often with cryptocurrency, and are generally encoded within smart contracts on a blockchain. Public attention towards NFTs has exploded in 2021, when their market has experienced record sales, but little is known about the overall structure and evolution of its market. Here, we analyse data concerning 6.1 million trades of 4.7 million NFTs between June 23, 2017 and April 27, 2021, obtained primarily from Ethereum and WAX blockchains. First, we characterize statistical properties of the market. Second, we build the network of interactions, show that traders typically specialize on NFTs associated with similar objects and form tight clusters with other traders that exchange the same kind of objects. Third, we cluster objects associated to NFTs according to their visual features and show that collections contain visually homogeneous objects. Finally, we investigate the predictability of NFT sales using simple machine learning algorithms and find that sale history and, secondarily, visual features are good predictors for price. We anticipate that these findings will stimulate further research on NFT production, adoption, and trading in different contexts.
description: Working paper, comments welcome
Novel metabolites from the Mariana Trench-derived fungus Talaromyces sp. SY2250
Creators: name: Liu, Xin
name: Ma, Mingzhu
name: Ha, Yura
name: Wang, Nan
name: Zhou, Yufang
name: Zhang, Zhizhen
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Four previously undescribed compounds talaromyester A (1) and purpuresters C–E (2–4), together with known purpurester A (5) and purpuride G (6), were isolated from the metabolites produced by the Mariana Trench sediment-derived fungus Talaromyces sp. SY2250. Compounds 2–5, two pairs of racemates, were separated on a chiral HPLC column. Structures of the isolated compounds were determined based on their HRESIMS data, extensive NMR spectroscopic analyses, and optical rotation calculations. Purpuride G (6) showed antiproliferative activity against glioma cells and may be the main active compound responsible for the activity of the crude extract prepared from the culture of Talaromyces sp. SY2250 in rice medium.
Entanglement of a Single Spin-1 Object: An Example of Ubiquitous Entanglement
Creators: name: Binicioglu, Sinem
name: Can, M. Ali
name: Klyachko, Alexander A.
name: Shumovsky, Alexander S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using a single spin-1 object as an example, we discuss a recent approach to quantum entanglement. The key idea of the approach consists in presetting of basic observables in the very definition of quantum system. Specification of basic observables defines the dynamic symmetry of the system. Entangled states of the system are then interpreted as states with maximal amount of uncertainty of all basic observables. The approach gives purely physical picture of entanglement. In particular, it separates principle physical properties of entanglement from inessential. Within the model example under consideration, we show relativity of entanglement with respect to dynamic symmetry and argue existence of single-particle entanglement. A number of physical examples are considered.
description: 12 pages, 2 figure : title has been changed, paper is re-organized, new section "Violation of Bell-type condition by single spin-1" is added
Long-term evolution of orbits about a precessing oblate planet. 2. The case of variable precession
Creators: name: Efroimsky, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We continue the study undertaken in Efroimsky (2005a) where we explored the influence of spin-axis variations of an oblate planet on satellite orbits. Near-equatorial satellites had long been believed to keep up with the oblate primary's equator in the cause of its spin-axis variations. As demonstrated by Efroimsky and Goldreich (2004), this opinion had stemmed from an inexact interpretation of a correct result by Goldreich (1965). Though Goldreich (1965) mentioned that his result (preservation of the initial inclination, up to small oscillations about the moving equatorial plane) was obtained for non-osculating inclination, his admonition has been persistently ignored for forty years. It was explained in Efroimsky and Goldreich (2004) that the equator precession influences the osculating inclination of a satellite orbit already in the first order over the perturbation caused by a transition from an inertial to an equatorial coordinate system. It was later shown in Efroimsky (2005a) that the secular part of the inclination is affected only in the second order. This fact, anticipated by Goldreich (1965), remains valid for a constant rate of the precession. It turns out that non-uniform variations of the planetary spin state generate changes in the osculating elements, that are linear in the planetary equator's total precession rate, rate that includes the equinoctial precession, nutation, the Chandler wobble, and the polar wander. We work out a formalism which will help us to determine if these factors cause a drift of a satellite orbit away from the evolving planetary equator.
description: Extended version of a paper published in ``Celestial Mechanics and Dynamical Astronomy."
Mechanical probing of liquid foam aging
Creators: name: Cantat, Isabelle
name: Pitois, Olivier
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present experimental results on the Stokes experiment performed in a 3D dry liquid foam. The system is used as a rheometric tool : from the force exerted on a 1cm glass bead, plunged at controlled velocity in the foam in a quasi static regime, local foam properties are probed around the sphere. With this original and simple technique, we show the possibility of measuring the foam shear modulus, the gravity drainage rate and the evolution of the bubble size during coarsening.
Το Διονυσιακό και το Απολλώνιο στον νιτσεϊκό Υπεράνθρωπο
Creators: name: Κάργα, Μαγδαληνή Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: To Απολλώνιο και Διονυσιακό
Ο Υπεράνθρωπος
Οι τρεις μεταμορφώσεις του πνεύματος
The Apollonian and Dionysian
The Overman
The three transformations of the spirit

description: Κατά τον Νίτσε, η αντιθετική αλλά γόνιμη και αδερφική σχέση του Διονυσιακού και Απολλώνιου στοιχείου δημιουργεί την έννοια του Τραγικού, που, επίσης, αποτελεί την αιώνια σχέση του ανθρώπου με τον ίδιο του τον εαυτό και τη ζωή. Ο άνθρωπος καλείται να ενεργοποιήσει όλες τις θετικές του δυνάμεις καταφάσκοντας στη θέληση για δύναμη και να υπερβεί τον εαυτό του, καθώς σκοτώνει τον θεό και τη σχέση υποταγής μαζί του και ενώ περνά από την οφειλή στη θέληση. Το τελευταίο συμβολοποιείται μέσα από τις τρεις μεταμορφώσεις του είναι (καμήλα,λιοντάρι,παιδί). Τελικά, το παιδί είναι ο Υπεράνθρωπος-επιχειρούμε να δείξουμε- που ζει σε καθεστώς ελευθερίας και δημιουργίας, εφόσον έχει συντρίψει το υποτακτικό αδιέξοδο της καμήλας και αναβαθμίσει την διονυσιακή δύναμη του λέοντος. Το μωρό συνιστά την απολλώνια έκφραση της ζωής, που υποχρεωτικά προκύπτει μέσα από την χαοτική άβυσσο των προηγούμενων τραγικών μεταμορφώσεων του εαυτού.
description: According to Nietzsche, the controversial but productive and brotherly duplexity of Dionysian and Apollonian element creates the sense of Tragedy, which is also the eternal battle between oneself and life. One is asked to activate all the positive power that is included in the will of power and overcome oneself while one kills God and at the same time one kills the eternal submission to God and passes from “debt” to “will”. The latter is being symbolized by the three transformations (camel, lion, child). The aim of the present study is to show that the baby is , after all, the Overman that actually lives in a state of freedom and creativity, provided that it has crushed the submissive weight of the camel and upgraded the Dionysian power of the lion. The child lies in the Apollonian expression of life that mandatory results from the chaotic abyss of the previous transformations in the tragic existence.
Susceptibilities and the Phase Structure of a Chiral Model with Polyakov Loops
Creators: name: Sasaki, C.
name: Friman, B.
name: Redlich, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In an extension of the Nambu-Jona-Lasinio model where the quarks interact with the temporal gluon field, represented by the Polyakov loop, we explore the relation between the deconfinement and chiral phase transitions. The effect of Polyakov loop dynamics on thermodynamic quantities, on the phase structure at finite temperature and baryon density and on various susceptibilities is presented. Particular emphasis is put on the behavior and properties of the fluctuations of the (approximate) order parameters and their dependence on temperature and net--quark number density. We also discuss how the phase structure of the model is influenced by the coupling of the quarks to the Polyakov loop.
description: 18 pages, 22 figures; text rearranged and references added. results and conclusions unchanged; final version accepted for publication in Phys. Rev. D
Diseño institucional y buen gobierno:avances y reformas pendientes
Creators: name: Ildefonso Hernández Aguado
Publisher: name: Zenodo
Year: 2019

description: Spain lacks a sustained and strategic political action to improve the health of the population beyond health services. Good governance is a prerequisite for changing the health policy and the design of the National Health System in the right direction. In this article five areas related to good governance are selected: prioritization, comprehensive health policy, leadership, national health agency, and cultural and intellectual environment. After analysing the available proposals, the actions that according to the current context could be implemented in order to advance the agenda of good governance are examined
Vacuum polarization in asymptotically anti-de Sitter black hole geometries
Creators: name: Flachi, Antonino
name: Tanaka, Takahiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the polarization of the vacuum for a scalar field, $$, on an asymptotically anti-de Sitter black hole geometry. The method we follow uses the WKB analytic expansion and point-splitting regularization, similarly to previous calculations in the asymptotically flat case. Following standard procedures, we write the Green function, regularize the initial divergent expression by point-splitting, renormalize it by subtracting geometrical counter-terms, and take the coincidence limit in the end. After explicitly demonstrating the cancellation of the divergences and the regularity of the Green function, we express the result as a sum of two parts. One is calculated analytically and the result expressed in terms of some generalized zeta-functions, which appear in the computation of functional determinants of Laplacians on Riemann spheres. We also describe some systematic methods to evaluate these functions numerically. Interestingly, the WKB approximation naturally organizes $$ as a series in such zeta-functions. We demonstrate this explicitly up to next-to-leading order in the WKB expansion. The other term represents the `remainder' of the WKB approximation and depends on the difference between an exact (numerical) expression and its WKB counterpart. This has to be dealt with by means of numerical approximation. The general results are specialized to the case of Schwarzschild-anti-de Sitter black hole geometries. The method is efficient enough to solve the semi-classical Einstein's equations taking into account the back-reaction from quantum fields on asymptotically anti-de Sitter black holes.
description: 12 pages, 1 figure
Grande caçada de porcos
Creators: name: Nãpjoku, Bartolo
name: Bardagil Mas, Bernat
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: Manoki language

description: Bartolo Nãpjoku conta brevemente uma caçada excepcionalmente exitosa, em preparação para uma festa à qual os Manoki estavam convidados.
Bartolo Nãpjoku briefly describes an exceptionally successful hunting trip, in preparation for a celebration to which the Manoki were invited.
P-matrices in orbit spaces and invariant theory
Creators: name: Talamini, Vittorino
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In many physical problems or applications one has to study functions that are invariant under the action of a symmetry group G and this is best done in the orbit space of G if one knows the equations and inequalities defining the orbit space and its strata. It is reviewed how the P-matrix is defined in terms of an integrity basis and how it can be used to determine the equations and inequalities defining the orbit space and its strata. It is shown that the P-matrix is a useful tool of constructive invariant theory, in fact, when the integrity basis is only partially known, calculating the P-matrix elements, one is able to determine the integrity basis completely.
description: 12 pages, Included in the Proceeding of the 8th Int. School of Th. Physics(SSPCM05), 31/8-7/9 2005, Myczkowce, Poland
Quantum query complexity with matrix-vector products
Creators: name: Childs, Andrew M.
name: Hung, Shih-Han
name: Li, Tongyang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Complexity (cs.CC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study quantum algorithms that learn properties of a matrix using queries that return its action on an input vector. We show that for various problems, including computing the trace, determinant, or rank of a matrix or solving a linear system that it specifies, quantum computers do not provide an asymptotic speedup over classical computation. On the other hand, we show that for some problems, such as computing the parities of rows or columns or deciding if there are two identical rows or columns, quantum computers provide exponential speedup. We demonstrate this by showing equivalence between models that provide matrix-vector products, vector-matrix products, and vector-matrix-vector products, whereas the power of these models can vary significantly for classical computation.
description: 19 pages. Added discussion of related prior work
Effect of the Coriolis Force on the Hydrodynamics of Colliding Wind Binaries
Creators: name: Lemaster, M. Nicole
name: Stone, James M.
name: Gardiner, Thomas A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using fully three-dimensional hydrodynamic simulations, we investigate the effect of the Coriolis force on the hydrodynamic and observable properties of colliding wind binary systems. To make the calculations tractable, we assume adiabatic, constant velocity winds. The neglect of radiative driving, gravitational deceleration, and cooling limit the application of our models to real systems. However, these assumptions allow us to isolate the effect of the Coriolis force, and by simplifying the calculations, allow us to use a higher resolution (up to 640^3) and to conduct a larger survey of parameter space. We study the dynamics of collidng winds with equal mass loss rates and velocities emanating from equal mass stars on circular orbits, with a range of values for the ratio of the wind to orbital velocity. We also study the dynamics of winds from stars on elliptical orbits and with unequal strength winds. Orbital motion of the stars sweeps the shocked wind gas into an Archimedean spiral, with asymmetric shock strengths and therefore unequal postshock temperatures and densities in the leading and trailing edges of the spiral. We observe the Kelvin-Helmholtz instability at the contact surface between the shocked winds in systems with orbital motion even when the winds are identical. The change in shock strengths caused by orbital motion increases the volume of X-ray emitting post-shock gas with T > 0.59 keV by 63% for a typical system as the ratio of wind velocity to orbital velocity decreases to V_w/V_o = 2.5. This causes increased free-free emission from systems with shorter orbital periods and an altered time-dependence of the wind attenuation. We comment on the importance of the effects of orbital motion on the observable properties of colliding wind binaries.
description: 12 pages, 17 figures, accepted for publication in ApJ
Radio imaging of the Subaru/XMM-Newton Deep Field - I. The 100-microJy catalogue, optical identifications, and the nature of the faint radio source population
Creators: name: Simpson, Chris
name: Martinez-Sansigre, Alejo
name: Rawlings, Steve
name: Ivison, Rob
name: Akiyama, Masayuki
name: Sekiguchi, Kazuhiro
name: Takata, Tadafumi
name: Ueda, Yoshihiro
name: Watson, Mike
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe deep radio imaging at 1.4-GHz of the 1.3 square degree Subaru/XMM-Newton Deep Field (SXDF), made with the Very Large Array in B and C configurations. We present a radio map of the entire field, and a catalogue of 505 sources covering 0.8 square degrees to a peak flux density limit of 100 microJy. Robust optical identifications are provided for 90% of the sources, and suggested IDs are presented for all but 14 (of which 7 are optically blank, and 7 are close to bright contaminating objects). We show that the optical properties of the radio sources do not change with flux density, suggesting that AGNs continue to contribute significantly at faint flux densities. We test this assertion by cross-correlating our radio catalogue with the X-ray source catalogue and conclude that radio-quiet AGNs become a significant population at flux densities below 300 microJy, and may dominate the population responsible for the flattening of the radio source counts if a significant fraction of them are Compton-thick.
description: 18 pages, MNRAS, in press, full catalogue and hi-res figures at http://www.astro.livjm.ac.uk/~cjs/SXDS/radio/index.html
Generation of High Order Harmonics in Heisenberg-Euler Electrodynamics
Creators: name: Sasorov, Pavel
name: Pegoraro, Francesco
name: Esirkepov, Timur
name: Bulanov, Sergei
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: High order harmonic generation by extremely intense, interacting, electromagnetic waves in the quantum vacuum is investigated within the framework of the Heisenberg-Euler formalism. Two intersecting plane waves of finite duration are considered in the case of general polarizations. Detailed finite expressions are obtained for the case where only the first Poincaré invariant does not vanish. Yields of high harmonics in this case are most effective.
description: 12 pages, 2 figures
Black Hole in a Model with Dilaton and Monopole Fields II
Creators: name: Kyriakopoulos, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present an exact black hole solution in a model having besides gravity a dilaton and a monopole field, which is a generalization of a black hole solution we have found. The new solution, as the previous one, has three free parameters, one of which can be identified with the monopole charge, and another with the ADM mass. Its metric is asymptotically flat, has two horizon, irremovable singularity only at $r=0$, and the dilaton field is singular only at $r=0$. The dominant and the strong energy condition are satisfied outside and on the external horizon. According to a formulation of the no hair conjecture the solution is "hairy". Also a reformulation of the model with two monopole fields is given, which results in the appearance of an additional symmetry and therefore in the appearance of a conserved dilaton charge.
description: 8 pages