cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dynamics of Free Surface Perturbations Along an Annular Viscous Film
Creators: name: Smolka, Linda B.
name: North, Justin
name: Guerra, Bree K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: It is known that an axisymmetric viscous film flowing down the outside of a thin vertical fiber becomes unstable to interfacial perturbations. We present an experimental study using fluids with different densities, surface tensions and viscosities to investigate the growth and dynamics of these interfacial perturbations and to test the assumptions made by previous authors. We find the initial perturbation growth is exponential followed by a slower phase as the amplitude and wavelength saturate in size. Measurements of the perturbation growth for experiments conducted at low and moderate Reynolds numbers are compared to theoretical predictions developed from linear stability theory. Excellent agreement is found between predictions from a long-wave Stokes flow model (Craster & Matar, J. Fluid Mech. 553, 85 (2006)) and data, while fair agreement is found between predictions from a moderate Reynolds number model (Sisoev et al., Chem. Eng. Sci. 61, 7279 (2006)) and data. Furthermore, we find that a known transition in the longer-time perturbation dynamics from unsteady to steady behavior at a critical flow rate, Qc, is correlated to a transition in the rate at which perturbations naturally form along the fiber. For Q < Qc (steady case), the rate of perturbation formation is constant. As a result the position along the fiber where perturbations form is nearly fixed, and the spacing between consecutive perturbations remains constant as they travel 2 m down the fiber. For Q > Qc (unsteady case), the rate of perturbation formation is modulated. As a result the position along the fiber where perturbations form oscillates irregularly, and the initial speed and spacing between perturbations varies resulting in the coalescence of neighboring perturbations further down the fiber.
description: 13 pages, 22 eps figures
Incest and suicide attempt in adolescence
Creators: name: Kim, Shlomit
Publisher: name: University of British Columbia
Year: 2010

description: Research regarding incest victims who attempted suicide in adolescence has received little attention although incest is considered as one of the most destructive forms of sexual abuse; and the rate of suicide attempts in adolescence has been on the rise. This study employs an exploratory approach, investigating four female adolescents, aged 15-19, who experienced both, incestuous relationships in the past and suicide attempt in adolescence. Using an open-ended questionnaire, the subjects were interviewed and the recorded responses were transcribed and analyzed, using Glaser and Strauss' 'constant comparative method of analysis'. The conceptual findings indicate that the incest victims have gone through a process comprising three stages: i) becoming a victim, ii) escalation of problems, and iii) the healing process. The transition from one stage to another entailed change in the victims' lives. These stages included a number of categories and properties with their types, dimensions and conditions. The data suggest that incest is associated with suicide attempt in adolescence thus, incest victims should be considered a high risk group regarding suicidal behaviour in addition to the other sequels of incest. The conceptual categories and the themes that emerged from the analysis have implications for social-work practice, policy and further research.
Generalized gradient approximation for solids and their surfaces
Creators: name: Perdew, John P.
name: Ruzsinszky, Adrienn
name: Csonka, Gabor I.
name: Vydrov, Oleg A.
name: Scuseria, Gustavo E.
name: Constantin, Lucian A.
name: Zhou, Xiaolan
name: Burke, Kieron
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Successful modern generalized gradient approximations (GGA) are biased toward atomic energies. Restoration of the first-principles gradient expansion for the exchange energy over a wide range of density gradients eliminates this bias. We introduce PBEsol, a revised Perdew-Burke-Ernzerhof GGA that improves equilibrium properties for many densely-packed solids and their surfaces.
description: 4pages, 2figures,2tables
Η Ιταλική Κατοχή στην Ελλάδα (1941-1943): η πολιτική επιβολής και καταστολής από την ΧΙ Στρατιά
Creators: name: Καράβης, Στυλιανός-Περικλής Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Β’ Παγκόσμιος Πόλεμος
Ιταλική Κατοχή
Αντιστασιακό Κίνημα
Φασισμός
Second World War
Italian Occupation
Resistance Movement
Fascism

description: Η διατριβή αναφέρεται στην περίοδο της Ιταλικής Κατοχής στην Ελλάδα (1941-1943). Στο πρώτο κεφάλαιο καταγράφονται οι στρατιωτικές μετακινήσεις και η παγίωση του ιταλικού φασιστικού κατοχικού καθεστώτος στη χώρα. Αναδεικνύεται έτσι η στρατηγική του κατοχικού στρατού, ενώ εξάγονται χρήσιμα συμπεράσματα για τη νοοτροπία, τις ανάγκες και τις επιδιώξεις που υψηλά ιστάμενα πρόσωπα φρόντισαν να διεκπεραιώσουν μέσω του ρόλου τους στην κατεχόμενη Ελλάδα. Ύστερα, στο δεύτερο κεφάλαιο, γίνεται ανάλυση της οικονομικής πολιτικής των ιταλικών αρχών, των εξόδων κατοχής και της ανεπιτυχούς αντιμετώπισης του λιμού. Τέλος, το τρίτο κεφάλαιο καλύπτει το φαινόμενο του δοσιλογισμού, ενώ στο τέταρτο και πέμπτο κεφάλαιο ερμηνεύονται οι δικαϊκές αντιλήψεις του ιστορικού φασισμού.
description: The aim of the present thesis was the study of the Italian Occupation in Greece (1941-1943). We examined the strategy of the Italian troops in occupied Greece and the implementation of the Italian financial policy. Then we presented the features of collaborationism. Furthermore, we analyzed the legal procedures that “authorized” the Italian authorities to take measures against the Resistance movement.
Characterization of Closed Vector Fields in Finsler Geometry
Creators: name: Youssef, Nabil L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C60

description: The $π$-exterior derivative $ød$, which is the Finslerian generalization of the (usual) exterior derivative $d$ of Riemannian geometry, is defined. The notion of a $ød$-closed vector field is introduced and investigated. Various characterizations of $ød$-closed vector fields are established. Some results concerning $ød$-closed vector fields in relation to certain special Finsler spaces are obtained.
description: 10 pages, LaTeX file, Presented in "The International Conference on Finsler Extensions of Relativity Theory" held at Cairo, Egypt, November 4-10, 2006
Exact models with non-minimal interaction between dark matter and (either phantom or quintessence) dark energy
Creators: name: Gonzalez, Tame
name: Quiros, Israel
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A method for deriving Friedmann-Robertson-Walker (FRW) solutions developed in Int. J. Mod. Phys. D{\bf 5}(1996)71-84, is generalized to account for models with non-minimal coupling between the dark energy and the dark matter. New quintessence and phantom (flat) FRW solutions are found. Their physical significance is discussed. Additionally, the aforementioned method is modified so that, "coincidence free" solutions can be readily derived. Besides, we review some aspects of the phantom barrier crossing. In this regard we present a model which is free from the coincidence problem and, at the same time, does the crossing of the phantom barrier $ω=-1$ at late time. Finally, we give additional comments on the non predictive properties of scalar field cosmological models with or without energy transfer.
description: 15 pages, 2 eps figures. Several bibliographic references added. Some new comments and acknowledgements also added
Classical nucleation theory in ordering alloys precipitating with L12 structure
Creators: name: Clouet, Emmanuel
name: Nastar, Maylise
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: By means of low-temperature expansions (LTEs), the nucleation free energy and the precipitate interface free energy are expressed as functions of the solubility limit for alloys which lead to the precipitation of a stoichiometric L12 compound such as Al-Sc or Al-Zr alloys. Classical nucleation theory is then used to obtain a simple expression of the nucleation rate whose validity is demonstrated by a comparison with atomic simulations. LTEs also explain why simple mean-field approximation like the Bragg-Williams approximation fails to predict correct nucleation rates in such an ordering alloy.
Ellipses of minimal area and of minimal eccentricity circumscribed about a convex quadrilateral
Creators: name: Horwitz, Alan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26A06, 51M15

description: First, we fill in key gaps in Steiner's nice characterization of the most nearly circular ellipse which passes through the vertices of a convex quadrilateral, D. Steiner proved that there is only one pair of conjugate directions, M1 and M2, that belong to all ellipses of circumscription. Then he proves that if there is an ellipse, E, whose equal conjugate diameters possess the directional constants M1 and M2, then E must be an ellipse of circumscription which has minimal eccentricity. However, Steiner does not show the existence or uniqueness of such an ellipse. We prove that there is a unique ellipse of minimal eccentricity which passes through the vertices of D. We also show that there exists an ellipse which passes through the vertices of D and whose equal conjugate diameters possess the directional constants M1 and M2. We also show that there exists a unique ellipse of minimal area which passes through the vertices of D. Finally, we call a convex quadrilateral, D, bielliptic if the unique inscribed and circumscribed ellipses of minimal eccentricity have the same eccentricity. This generalizes the notion of bicentric quadrilaterals. In particular we show the existence of a bielliptic convex quadrilateral which is not bicentric.
description: Submitted for publication to the Journal of Mathematical Analysis and Applications-18 pages. No figures
ผลกระทบของกลยุทธ์การพัฒนาผลิตภัณฑ์ใหม่เชิงพลวัตรที่มีต่อผลการดำเนินงานของธุรกิจสื่อสิ่งพิมพ์ในประเทศไทย
Creators: name: รุ่งนภา ทองเชื้อ
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2556
Subjects: การพัฒนาผลิตภัณฑ์ใหม่เชิงพลวัตร, ผลการดำเนินงาน, ธุรกิจสื่อสิ่งพิมพ์ในประเทศไทย

description: 6, 32, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
ผลกระทบของสมรรถนะเครือข่ายเทคโนโลยีสารสนเทศที่ทีผลต่อความได้เปรียบทางการแข่งขันขิงธุรกิจพาณิชยน์อิเล็กทรอนิกส์ในประเทศไทย
Creators: name: กุสุมาภรณ์ พุดหล้า
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: สมรรถนะเครือข่ายเทคโนโลยีสารสนเทศ, ความได้เปรียบทางการแข่งขัน, ธุรกิจพาณิชย์อิเล็กทรอนิกส์

description: 1, 33, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
ผลกระทบของความสามารถในการประยุกต์ใช้โปรแกรมสาเร็จรูปทางการบัญชีที่มีต่อผลการปฏิบัติงานทางด้านบัญชีของผู้ทำบัญชีในเขตภาคตะวันออกเฉียงเหนือ
Creators: name: ปัทมา เกรัมย์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2557
Subjects: การประยุกต์ใช้โปรแกรมสำเร็จรูปทางการบัญชี, ผลการปฏิบัติงานทางด้านบัญชีผู้ทำบัญชี

description: 1, 33, วารสารมนุษยศาสตร์และสังคมศาสตร์  มหาวิทยาลัยมหาสารคาม
Glassy quantum dynamics of disordered Ising spins
Creators: name: Schultzen, Philipp
name: Franz, Titus
name: Geier, Sebastian
name: Salzinger, Andre
name: Tebben, Annika
name: Hainaut, Clément
name: Zürn, Gerhard
name: Weidemüller, Matthias
name: Gärttner, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the out-of-equilibrium dynamics in the quantum Ising model with power-law interactions and positional disorder. For arbitrary dimension $d$ and interaction range $α\geq d$ we analytically find a stretched exponential decay of the global magnetization and ensemble-averaged single-spin purity with a stretch-power $β= d/α$ in the thermodynamic limit. Numerically, we confirm that glassy behavior persists for finite system sizes and sufficiently strong disorder. We identify dephasing between disordered coherent pairs as the main mechanism leading to a relaxation of global magnetization, whereas genuine many-body interactions lead to a loss of single-spin purity which signifies the build-up of entanglement. The emergence of glassy dynamics in the quantum Ising model extends prior findings in classical and open quantum systems, where the stretched exponential law is explained by a scale-invariant distribution of time scales, to both integrable and non-integrable quantum systems.
สวัสดิการสังคมของผู้สูงอายุในประเทศไทย
Creators: name: สุดารัตน์ สุดสมบูรณ์
Publisher: name: วิทยาลัยเทคโนโลยีภาคใต้
Year: 2557
Subjects: สวัสดิการสังคม, ผู้สูงอายุ

description: 1, 7, วารสารเทคโนโลยีภาคใต้
A Dual-Species Atom Interferometer Payload for Operation on Sounding Rockets
Creators: name: Elsen, Michael
name: Piest, Baptist
name: Adam, Fabian
name: Anton, Oliver
name: Arciszewski, Paweł
name: Bartosch, Wolfgang
name: Becker, Dennis
name: Bleeke, Kai
name: Böhm, Jonas
name: Boles, Sören
name: Döringshoff, Klaus
name: Guggilam, Priyanka
name: Hellmig, Ortwin
name: Imwalle, Isabell
name: Kanthak, Simon
name: Kürbis, Christian
name: Koch, Matthias
name: Lachmann, Maike Diana
name: Mihm, Moritz
name: Müntinga, Hauke
name: Nepal, Ayush Mani
name: Oberschulte, Tim
name: Ohr, Peter
name: Papakonstantinou, Alexandros
name: Prat, Arnau
name: Reichelt, Christian
name: Sommer, Jan
name: Spindeldreier, Christian
name: Warner, Marvin
name: Wendrich, Thijs
name: Wenzlawski, André
name: Blume, Holger
name: Braxmaier, Claus
name: Lüdtke, Daniel
name: Peters, Achim
name: Rasel, Ernst Maria
name: Sengstock, Klaus
name: Wicht, Andreas
name: Windpassinger, Patrick
name: Grosse, Jens
Publisher: name: Heidelberg : Springer
Year: 2023
Subjects: subject: Atom interferometry
subject: Atom optics
subject: Bose-Einstein condensate
subject: Microgravity
subject: Quantum optics
subject: Sounding rocket
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: We report on the design and the construction of a sounding rocket payload capable of performing atom interferometry with Bose-Einstein condensates of 41 K and 87 Rb. The apparatus is designed to be launched in two consecutive missions with a VSB-30 sounding rocket and is qualified to withstand the expected vibrational loads of 1.8 g root-mean-square in a frequency range between 20–2000 Hz and the expected static loads during ascent and re-entry of 25 g. We present a modular design of the scientific payload comprising a physics package, a laser system, an electronics system and a battery module. A dedicated on-board software provides a largely automated process of predefined experiments. To operate the payload safely in laboratory and flight mode, a thermal control system and ground support equipment has been implemented and will be presented. The payload presented here represents a cornerstone for future applications of matter wave interferometry with ultracold atoms on satellites.
X-ray and Near-IR Variability of the Anomalous X-ray Pulsar 1E 1048.1-5937: From Quiescence Back to Activity
Creators: name: Tam, Cindy R.
name: Gavriil, Fotis P.
name: Dib, Rim
name: Kaspi, Victoria M.
name: Woods, Peter M.
name: Bassa, Cees
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We report on new and archival X-ray and near-infrared observations of the anomalous X-ray pulsar 1E 1048.1-5937 performed between 2001-2007 with RXTE, CXO, Swift, HST, and VLT. During its ~2001-2004 active period, 1E 1048.-5937 exhibited two large, long-term X-ray pulsed-flux flares as well as short bursts, and large (>10x) torque changes. Monitoring with RXTE revealed that the source entered a phase of timing stability in 2004; at the same time, a series of four simultaneous observations with CXO and HST in 2006 showed that its X-ray flux and spectrum and near-IR flux, all variable prior to 2005, stabilized. The near-IR flux, when detected by HST (H~22.7 mag) and VLT (K_S~21.0 mag), was considerably fainter than previously measured. Recently, in 2007 March, this newfound quiescence was interrupted by a sudden flux enhancement, X-ray spectral changes and a pulse morphology change, simultaneous with a large spin-up glitch and near-IR enhancement. Our RXTE observations revealed a sudden pulsed flux increase by a factor of ~3 in the 2-10 keV band. In observations with CXO and Swift, we found that the total X-ray flux increased much more than the pulsed flux, reaching a peak value of >7 times the quiescent value (2-10 keV). With these recent data, we find a strong anti-correlation between X-ray flux and pulsed fraction, and a correlation between X-ray spectral hardness and flux. Simultaneously with the radiative and timing changes, we observed a significant X-ray pulse morphology change such that the profile went from nearly sinusoidal to having multiple peaks. We compare these remarkable events with other AXP outbursts and discuss implications in the context of the magnetar model and other models of AXP emission.
description: 13 pages (6 figures) in emulateapj style. Accepted for publication in ApJ. New version includes referee's corrections; split Figure 1 into 2 figures; modified Figs. 4b and 6b; rearranged and renumbered of some figures and sections; added an X-ray dataset; improved analysis of pulse morphology and pulsed fraction; added paragraph to sec. 3.2.6
Very Large Array imaging rules out precessing radio jets in three DES$-$SDSS-selected candidate periodic quasars
Creators: name: Chen, Yu-Ching
name: Liu, Xin
name: Liao, Wei-Ting
name: Guo, Hengxiao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Periodic quasars have been suggested as candidates for hosting binary supermassive black holes (SMBHs), although alternative scenarios remain possible to explain the optical light curve periodicity. To test the alternative hypothesis of precessing radio jet, we present deep 6 GHz radio imaging conducted with NSF's Karl G. Jansky Very Large Array (VLA) in its C configuration for the three candidate periodic quasars, DES J024703.24$-$010032.0, DES J024944.66$-$000036.8, and DES J025214.67$-$002813.7. Our targets were selected based on their optical variability using 20-yr long multi-color light curves from the Dark Energy Survey (DES) and the Sloan Digital Sky Survey (SDSS). The new VLA observations show that all three periodic quasars are radio-quiet with the radio loudness parameters measured to be $R\equiv f_{6\,{\rm cm}}/f_{\rm 2500}$ of $\lesssim$1.0$-$1.5 and the $k$-corrected luminosities $νL_ν$[6 GHz] of $\lesssim$5$-$21 $\times$ 10$^{39}$ erg s$^{-1}$. They are in stark contrast to previously known periodic quasars proposed as binary SMBH candidates such as the blazar OJ 287 and PG1302$-$102. Our results rule out optical emission contributed from precessing radio jets as the origin of the optical periodicity in the three DES$-$SDSS-selected candidate periodic quasars. Future continued optical monitoring and complementary multi-wavelength observations are still needed to further test the binary SMBH hypothesis as well as other competing scenarios to explain the optical periodicity.
description: 8 pages, 5 figures, 2 tables, accepted for publication in MNRAS
Archival acquisition of the records of voluntary associations
Creators: name: Hart, Susan Mary Anne
Publisher: name: University of British Columbia
Year: 2010

description: While acquisition is a vital responsibility for all archival repositories, generally accepted principles and practices of archival acquisition are sadly lacking in North America. This problem is particularly apparent with regard to the records of voluntary associations, the nature and significance of which are largely unknown to archivists. This thesis studies the problem of, and proposes a system for, archival acquisition of the records of voluntary associations. To begin with, it provides a definition, description, and categorization of voluntary associations, and delineates their life cycle and relationships with other organizations. The thesis subsequently moves on to consider the records-keeping practices of voluntary associations, the relevant acquisition practices of archival repositories, and applicable archival theories of acquisition and appraisal. Ethnographic methodology is used to analyse two voluntary associations, their activities, and their records-keeping practices. Finally it is proposed that archival repositories acquire the records of voluntary associations, that this can be done by existing repositories and through such arrangements as special committees, consortiums of associations, and special repositories, and that a standard procedure be followed by repositories when acquiring the records of a voluntary association.
Electron flux is a key determinant of uranium isotope fractionation during bacterial reduction
Creators: name: Brown, Ashley R.
name: Molinas, Margaux
name: Roebbert, Yvonne
name: Sato, Ataru
name: Abe, Minori
name: Weyer, Stefan
name: Bernier-Latmani, Rizlan
Publisher: name: London : Springer Nature
Year: 2023
Subjects: subject: chemical composition
subject: electron
subject: isotopic fractionation
subject: rock mechanics
subject: trace element
subject: uranium isotope
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Uranium isotopic signatures in the rock record are utilized as a proxy for past redox conditions on Earth. However, these signatures display significant variability that complicates the interpretation of specific redox conditions. Using the model uranium-reducing bacterium, Shewanella oneidensis MR-1, we show that the abundance of electron donors (e.g., labile organic carbon) controls uranium isotope fractionation, such that high electron fluxes suppress fractionation. Further, by purifying a key uranium-reducing enzyme, MtrC, we show that the magnitude of fractionation is explicitly controlled by the protein redox state. Finally, using a mathematical framework, we demonstrate that these differences in fractionation arise from the propensity for back-reaction throughout the multi-step reduction of hexavalent uranium. To improve interpretations of observed fractionations in natural environments, these findings suggest that a variable intrinsic fractionation factor should be incorporated into models of uranium isotope systematics to account for differences in electron flux caused by organic carbon availability.
Bubble-enhanced basanite–tephrite mixing in the early stages of the Cumbre Vieja 2021 eruption, La Palma, Canary Islands
Creators: name: González-García, Diego
name: Boulesteix, Thomas
name: Klügel, Andreas
name: Holtz, François
Publisher: name: [London] : Macmillan Publishers Limited, part of Springer Nature
Year: 2023
Subjects: subject: 500
subject: 600

description: Syneruptive magma mixing is widespread in volcanic eruptions, affecting explosivity and composition of products, but its evidence in basaltic systems is usually cryptic. Here we report direct evidence of mixing between basanitic and tephritic magmas in the first days of the 2021 Tajogaite eruption of Cumbre Vieja, La Palma. Groundmass glass in tephritic tephra from the fifth day of the eruption is locally inhomogeneous, showing micron-scale filamentary structures of Si-poor and Fe-, Mg-rich melt, forming complex filaments attached to bubbles. Their compositional distribution attests the presence of primitive basanitic magma, with compositions similar to late-erupted melts, interacting with an evolved tephritic melt during the first week of the event. From filament morphology, we suggest their generation by dragging and folding of basanitic melt during bubble migration through melt interfaces. Semi-quantitative diffusion modelling indicates that the filamentary structures are short-lived, dissipating in timescales of tens of seconds. In combination with thermobarometric constraints, we suggest a mixing onset by sub-Moho remobilization of a tephritic reservoir by basanite input, followed by turbulent ascent of a mingled magma. In the shallow conduit or lava fountain, bubble nucleation and migration triggered further mingling of the distinct melt-phases. This phenomenon might have enhanced the explosive behaviour of the eruption in such period, where violent strombolian explosions were common.
Study on $Z_{cs}$ and excited $B_s^0$ states in the chiral quark model
Creators: name: Chen, Xiaoyun
name: Tan, Yue
name: Chen, Yuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Stimulated by the newly observed charged hidden-charm state $Z_{cs}(3985)^-$ by BESIII Collaboration, $Z_{cs}(4000)^+$, $Z_{cs}(4220)^+$ and the excited $B_s^0$ states by LHCb Collaboration, a full calculation including masses and decay widths is emerged in the chiral quark model. For $Z_{cs}$ states, we assign quantum numbers $I(J^P)=\frac{1}{2}(1^+)$ and quark composition $c\bar{c}s\bar{u}$ according to the experiment. For $B_s^0$ states, systematically investigations are performed with $I(J^P)=0(0^+), 0(1^+), 0(2^+)$ both in 2-body $b\bar{s}$ and 4-body $b\bar{s}q\bar{q}~(q=u~\rm{or}~d)$ systems. Each tetraquark calculation takes all structures including meson-meson, diquark-antidiquark and all possible color configurations into account. Among the numerical techniques to solve the 2-body and 4-body Schr{ö}dinger equation, the spatial wave functions are expanded in series of Gaussian basis functions for high precision, which is the way Gaussian expansion method so called. Our results indicate that the low-lying states of 4-quark system are all higher than the corresponding thresholds either for $c\bar{c}s\bar{u}$ or for $b\bar{s}q\bar{q}$ systems. With the help of the real scaling method, we found two resonance states with masses of 4023 MeV and 4042 MeV for $c\bar{c}s\bar{u}$ system. The state $c\bar{c}s\bar{u}(4042)$ has a consistent mass and decay width with the recent observed state $Z_{cs}(3985)^-$. For $b\bar{s}q\bar{q}$ system with $J=0$, some resonance states are also found. The newly observed excited $B_s^0$ states can be accommodated in the chiral quark model as $2S$ or $1D$ states, and the mixing with four-quark states are also needed to be considered.
description: 9 pages,10 figures
Grid-Based Correlation Analysis to Identify Rare Quantum Transport Behaviors
Creators: name: Bamberger, Nathan D.
name: Dyer, Dylan
name: Parida, Keshaba N.
name: McGrath, Dominic V.
name: Monti, Oliver L. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Most single-molecule transport experiments produce large and stochastic datasets containing a wide range of behaviors, presenting both a challenge to their analysis, but also an opportunity for discovering new physical insights. Recently, several unsupervised clustering algorithms have been developed to help extract and separate distinct features from single-molecule transport data. However, these clustering approaches have been primarily designed and used to extract major dataset components, and are consequently likely to struggle with identifying very rare features and behaviors which may nonetheless contain physically meaningful information. In this work, we thus introduce a completely new analysis framework specifically designed for rare event detection in single-molecule break junction data to help unlock such information and provide a new perspective with different implicit assumptions than clustering. Our approach leverages the concept of correlations of breaking traces with their own history to robustly identify paths through distance-conductance space that correspond to reproducible rare behaviors. As both a demonstrative and important example, we focus on rare conductance plateaus for short molecules, which can be essentially invisible when examining raw data. We show that our grid-based correlation tools successfully and reproducibly locate these rare plateaus in real experimental datasets, including in situations that traditional clustering approaches find challenging. This result enables a broader variety of molecules to be considered in the future, and suggests that our new approach is a useful tool for detecting rare yet meaningful behaviors in single molecule transport data more generally.
description: DOI added, minor typos fixed, conclusions unchanged
Spin dynamic response to a time dependent field
Creators: name: Bevilacqua, Giuseppe
name: Biancalana, Valerio
name: Dancheva, Yordanka
name: Fregosi, Alessandro
name: Vigilante, Antonio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The dynamic response of a parametric system constituted by a spin precessing in a time dependent magnetic field is studied by means of a perturbative approach that unveils unexpected features, and is then experimentally validated. The first-order analysis puts in evidence different regimes: beside a tailorable low-pass-filter behaviour, a band-pass response with interesting potential applications emerges. Extending the analysis to the second perturbation order permits to study the response to generically oriented fields and to characterize several non-linear features in the behaviour of such kind of systems.
description: 13 pages, 7 figures, 52 references. Accepted for publication in Applied Physics B
Bioprocess development for endospore production by Bacillus coagulans using an optimized chemically defined medium
Creators: name: Biermann, Riekje
name: Rösner, Laura
name: Beyer, Lisa‐Marie
name: Niemeyer, Laura
name: Beutel, Sascha
Publisher: name: Weinheim : Wiley-VCH
Year: 2023
Subjects: subject: Bacillus coagulans
subject: bioprocess development
subject: defined medium
subject: optimization
subject: spore production
subject: 660

description: Bacillus coagulans is a promising probiotic, because it combines probiotic properties of Lactobacillus and the ability of Bacillus to form endospores. Due to this hybrid relationship, cultivation of this organism is challenging. As the probiotics market continues to grow, there is a new focus on the production of these microorganisms. In this work, a strain-specific bioprocess for B. coagulans was developed to support growth on one hand and ensure sporulation on the other hand. This circumstance is not trivial, since these two metabolic states are contrary. The developed bioprocess uses a modified chemically defined medium which was further investigated in a one-factor-at-a-time assay after adaptation. A transfer from the shake flask to the bioreactor was successfully demonstrated in the scope of this work. The investigated process parameters included temperature, agitation and pH-control. Especially the pH-control improved the sporulation in the bioreactor when compared to shake flasks. The bioprocess resulted in a sporulation efficiency of 80%–90%. This corresponds to a sevenfold increase in sporulation efficiency due to a transfer to the bioreactor with pH-control. Additionally, a design of experiment (DoE) was conducted to test the robustness of the bioprocess. This experiment validated the beforementioned sporulation efficiency for the developed bioprocess. Afterwards the bioprocess was then scaled up from a 1 L scale to a 10 L bioreactor scale. A comparable sporulation efficiency of 80% as in the small scale was achieved. The developed bioprocess facilitates the upscaling and application to an industrial scale, and can thus help meet the increasing market for probiotics.
Universal nature of particle displacements close to glass and jamming transitions
Creators: name: Chaudhuri, Pinaki
name: Berthier, Ludovic
name: Kob, Walter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We examine the structure of the distribution of single particle displacements (van-Hove function) in a broad class of materials close to glass and jamming transitions. In a wide time window comprising structural relaxation, van-Hove functions reflect the coexistence of slow and fast particles (dynamic heterogeneity). The tails of the distributions exhibit exponential, rather than Gaussian, decay. We argue that this behavior is universal in glassy materials and should be considered the analog, in space, of the stretched exponential decay of time correlation functions. We introduce a dynamical model that describes quantitatively numerical and experimental data in supercooled liquids, colloidal hard spheres and granular materials. The tails of the distributions directly explain the decoupling between translational diffusion and structural relaxation observed in glassy materials.
description: 5 pages; 4 figs
Dirac-Born-Infeld warm inflation realization in the strong dissipation regime
Creators: name: Motaharfar, Meysam
name: Ramos, Rudnei O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider warm inflation with a Dirac-Born-Infeld (DBI) kinetic term in which both the nonequilibrium dissipative particle production and the sound speed parameter slow the motion of the inflaton field. We find that a low sound speed parameter removes, or at least strongly suppresses, the growing function appearing in the scalar of curvature power spectrum of warm inflation, which appears due to the temperature dependence in the dissipation coefficient. As a consequence of that, a low sound speed helps to push warm inflation into the strong dissipation regime, which is an attractive regime from a model building and phenomenological perspective. In turn, the strong dissipation regime of warm inflation softens the microscopic theoretical constraints on cold DBI inflation. The present findings, along with the recent results from swampland criteria, give a strong hint that warm inflation may consistently be embedded into string theory.
description: 13 pages, 1 figure. Replaced with version matching the published one
Multimode Metrology via Scattershot Sampling
Creators: name: Guanzon, Joshua J.
name: Lund, Austin P.
name: Ralph, Timothy C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Scattershot photon sources are known to have useful properties for optical quantum computing and boson sampling purposes, in particular for scaling to large numbers of photons. This paper investigates the application of these scattershot sources towards the metrological task of estimating an unknown phase shift. In this regard, we introduce three different scalable multimode interferometers, and quantify their quantum Fisher information performance using scattershot sources with arbitrary system sizes. We show that two of the interferometers need the probing photons to be in certain input configurations to beat the classical shot-noise precision limit, while the remaining interferometer has the necessary symmetry which allows it to always beat the classical limit no matter the input configuration. However, we can prove all three interferometers gives the same amount of information on average, which can be shown to beat the classical precision limit. We also perform Monte Carlo simulations to compare the interferometers in different experimentally relevant regimes, as a function of the number of samples.
description: 18 pages, 6 figures, updated with additional Figure 7 + other minor changes
Modified $GW$ Method in Electronic Systems
Creators: name: Sun, Zhipeng
name: Fan, Zhenhao
name: Li, Hui
name: Li, Dingping
name: Rostenstein, Baruch
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A modified $GW$ approximation to many - body systems is developed. The approximation has the same computational complexity as the traditional $GW$ approach, but uses a different truncation scheme. This scheme neglects high order connected correlation functions. A covariant (preserving Ward identities due to charge conservation) scheme for two - body correlators is employed, which holds the relation between the charge correlator and charge susceptibility. The method is tested on the two - dimensional one - band Hubbard model. Results are compared with exact diagonalization, the fluctuation - exchange (FLEX) theory and determinantal quantum Monte Carlo (DQMC) approach. The comparison for the (one - body) Green's function demonstrates that it is more precise in strong - coupling regime (especially away from half - filling) than similar - complexity approximations $GW$ or FLEX. The charge correlator is in excellent agreement with the numerically exact result obtained from DQMC.
description: 21 pages, 7 figures
Multi-trace Correlators in the SYK Model and Non-geometric Wormholes
Creators: name: Berkooz, Micha
name: Brukner, Nadav
name: Narovlansky, Vladimir
name: Raz, Amir
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider multi-energy level distributions in the SYK model, and in particular, the role of global fluctuations in the density of states of the SYK model. The connected contributions to the moments of the density of states go to zero as $N \to \infty$, however, they are much larger than the standard RMT correlations. We provide a diagrammatic description of the leading behavior of these connected moments, showing that the dominant diagrams are given by 1PI cactus graphs, and derive a vector model of the couplings which reproduces these results. We generalize these results to the first subleading corrections, and to fluctuations of correlation functions. In either case, the new set of correlations between traces (i.e. between boundaries) are not associated with, and are much larger than, the ones given by topological wormholes. The connected contributions that we discuss are the beginning of an infinite series of terms, associated with more and more information about the ensemble of couplings, which hints towards the dual of a single realization. In particular, we suggest that incorporating them in the gravity description requires the introduction of new, lighter and lighter, fields in the bulk with fluctuating boundary couplings.
description: 81 pages, 23 figures. V2: added short discussion on the modified dip time, and corrected minor typos
Psalterium cum orationibus et glossis (Fragment)
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 2023

description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Aus der Mittelalterlichen Sammlung Wilhelm Wackernagels, angelegt ab 1856, eingeklebt in Album 1 (N I 1), Bl. 17, ebd. Hinweis auf den Vorbesitzer: "Geschenk des Herrn Prof. Dr. Joh. Schnell, Civilgerichtspräsidenten"; herausgelöst und konservatorisch neu verpackt 2015/2016. Verzeichnet bei Heyne (ca. 1869-1883) S. 1r. Herausgelöster ehemaliger Bucheinband, wie von der Makulierung herrührende Rückstände deutlich machen; ehemaliger Trägerband ca. 16 x 9 x 4,5 cm. Aufschrift (Bandtitel), von der Zweitverwendung herrührend: "Publication de la paixe".
description: Wilmart, Dom André, The Psalter Collects from V-VIth Century Sources (Three Series), ed. Dom Louis Brou, London 1949.
description: Verzeichnung=Description=Inventaire Mai 2017 HAN-Katalogisierungsregeln Minimalaufnahme nach: Bischoff, 1998
description: Verzeichnung=Description=Inventaire Dezember 2022 HAN-Katalogisierungsregeln Normalaufnahme nach Bischoff (1998), S. 63, Nr. 292; mit autoptischen Ergänzungen Fischer.
description: Digitalisierung=Digitization=Numérisation November 2023 TIFF
description: Erschliessungsniveau Normalniveau
Constrained Radar Waveform Design for Range Profiling
Creators: name: Tang, Bo
name: Liu, Jun
name: Wang, Hai
name: Hu, Yihua
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Range profiling refers to the measurement of target response along the radar slant range. It plays an important role in automatic target recognition. In this paper, we consider the design of transmit waveform to improve the range profiling performance of radar systems. Two design metrics are adopted for the waveform optimization problem: one is to maximize the mutual information between the received signal and the target impulse response (TIR); the other is to minimize the minimum mean-square error for estimating the TIR. In addition, practical constraints on the waveforms are considered, including an energy constraint, a peak-to-average-power-ratio constraint, and a spectral constraint. Based on minorization-maximization, we propose a unified optimization framework to tackle the constrained waveform design problem. Numerical examples show the superiority of the waveforms synthesized by the proposed algorithms.
Missale (Fragment)
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1000

description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Offenbar Bucheinband, ehemaliger Trägerband ca. 31 x 24,2 cm; auf 2v Spuren eines Titels und auf 1r Spuren einer Signatur "No 35”. Verzeichnet bei Heyne (ca. 1869-1883), 1v
description: Cantus Index: Catalogue of Chant Texts and Melodies
description: Verzeichnung=Description=Inventaire Mai 2022 HAN-Katalogisierungsregeln Normalaufnahme nach: Autopsie Bernasconi
description: Digitalisierung=Digitization=Numérisation November 2023 TIFF
description: Erschliessungsniveau Normalniveau
Vacuum Polarization by a Magnetic Flux Tube at Finite Temperature in the Cosmic String Spacetime
Creators: name: Spinelly, J.
name: de Mello, E. R. Bezerra
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we analyse the effect produced by the temperature in the vacuum polarization associated with charged massless scalar field in the presence of magnetic flux tube in the cosmic string spacetime. Three different configurations of magnetic fields are taken into account: $(i)$ a homogeneous field inside the tube, $(ii)$ a field proportional to $1/r$ and $(iii)$ a cylindrical shell with $δ$-function. In these three cases, the axis of the infinitely long tube of radius $R$ coincides with the cosmic string. Because the complexity of this analysis in the region inside the tube, we consider the thermal effect in the region outside. In order to develop this analysis, we construct the thermal Green function associated with this system for the three above mentioned situations considering points in the region outside the tube. We explicitly calculate in the high-temperature limit, the thermal average of the field square and the energy-momentum tensor.
description: 16 pages, 1 figure
Non-Markovian dynamics of a qubit coupled to an Ising spin bath
Creators: name: Krovi, Hari
name: Oreshkov, Ognyan
name: Ryazanov, Mikhail
name: Lidar, Daniel A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the analytically solvable Ising model of a single qubit system coupled to a spin bath. The purpose of this study is to analyze and elucidate the performance of Markovian and non-Markovian master equations describing the dynamics of the system qubit, in comparison to the exact solution. We find that the time-convolutionless master equation performs particularly well up to fourth order in the system-bath coupling constant, in comparison to the Nakajima-Zwanzig master equation. Markovian approaches fare poorly due to the infinite bath correlation time in this model. A recently proposed post-Markovian master equation performs comparably to the time-convolutionless master equation for a properly chosen memory kernel, and outperforms all the approximation methods considered here at long times. Our findings shed light on the applicability of master equations to the description of reduced system dynamics in the presence of spin-baths.
description: 17 pages, 16 figures
Teaching and Learning Resources Padlet
Creators: name: Read, Samantha
Publisher: name: National Teaching Repository
Year: 2025
Subjects: classificationCode: 390199
subject: Curriculum and pedagogy not elsewhere classified

description: This document includes a link to a Padlet board which I created and continuously update with useful teaching and learning resources to support an active blended learning approach.Topics featured on the Padlet include:Open Education Resource sites (OERs)Images and video toolsCollaboration toolsGamificationStoryboardingPresentation toolsAI toolsAuthentic assessment guidanceArticles of interestTraining opportunitiesNetworks of interestLink to Padlet: https://padlet.com/samantha_read/teaching-and-learning-resources-zn6y5mwr9aj5
Evolution of density perturbations in double exponential quintessence models
Creators: name: Gonzalez, Tame
name: Cardenas, Rolando
name: Quiros, Israel
name: Leyva, Yoelsy
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this work we investigate the evolution of matter density perturbations for quintessence models with a self-interaction potential that is a combination of exponentials. One of the models is based on the Einstein theory of gravity, while the other is based on the Brans-Dicke scalar tensor theory. We constrain the parameter space of the models using the determinations for the growth rate of perturbations derived from data of the 2-degree Field Galaxy Redshift Survey.
description: 5 pages, 3 eps figures
Yukawa's Pion, Low-Energy QCD and Nuclear Chiral Dynamics
Creators: name: Weise, Wolfram
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A survey is given of the evolution from Yukawa's early work, via the understanding of the pion as a Nambu-Goldstone boson of spontaneously broken chiral symmetry in QCD, to modern developments in the theory of the nucleus based on the chiral effective field theory representing QCD in its low-energy limit.
description: 21 pages, 13 figures. Proc. Yukawa-Tomonaga Symposium, Kyoto, Dec.06; to be publ. in Progr. Theor. Phys. Suppl. (Kyoto)