cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quasi-simultaneous radio and X-ray observations of Aql X-1: probing low luminosities
Creators: name: Gusinskaia, N. V.
name: Hessels, J. W. T.
name: Degenaar, N.
name: Deller, A. T.
name: Miller-Jones, J. C. A.
name: Archibald, A. M.
name: Heinke, C. O.
name: Moldon, J.
name: Patruno, A.
name: Tomsick, J. A.
name: Wijnands, R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Aql X-1 is one of the best-studied neutron star low-mass X-ray binaries. It was previously targeted using quasi-simultaneous radio and X-ray observations during at least 7 different accretion outbursts. Such observations allow us to probe the interplay between accretion inflow (X-ray) and jet outflow (radio). Thus far, these combined observations have only covered one order of magnitude in radio and X-ray luminosity range; this means that any potential radio - X-ray luminosity correlation, $L_R \propto L_X^β$, is not well constrained ($β\approx$ 0.4-0.9, based on various studies) or understood. Here we present quasi-simultaneous Very Large Array and Swift-XRT observations of Aql X-1's 2016 outburst, with which we probe one order of magnitude fainter in radio and X-ray luminosity compared to previous studies ($6 \times 10^{34} < L_X < 3 \times 10^{35}$ erg s$^{-1}$, i.e., the intermediate to low-luminosity regime between outburst peak and quiescence). The resulting radio non-detections indicate that Aql X-1's radio emission decays more rapidly at low X-ray luminosities than previously assumed - at least during the 2016 outburst. Assuming similar behaviour between outbursts, and combining all available data, this can be modelled as a steep $β=1.17^{+0.30}_{-0.21}$ power-law index or as a sharp radio cut-off at $L_X \lesssim 5 \times 10^{35}$ erg s$^{-1}$ (given our deep radio upper limits at X-ray luminosities below this value). We discuss these results in the context of other similar studies.
description: 15 pages, 11 figures, 3 tables, accepted for publication in MNRAS
Counterproductive Counternarcotic Strategies?
Creators: name: Andersson, Camilla I.M.
name: Andersson, Camilla I.M.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Crop Production/Industries
subject: Risk and Uncertainty
subject: Eradication
subject: Informal credit markets
subject: Opium
subject: Sharecropping

description: We model the economic incentives surrounding opium crop production in Afghanistan. Specifically, we examine the impact of eradication policies when opium is used as a means of obtaining credit, and when the crops are produced in sharecropping arrangements. The analysis suggests that when perfect credit markets are available, an increased risk of eradication will lead to less land being allocated to opium poppy. However, when opium is used as a means of obtaining credit, the effects of eradication are no longer clear-cut. Finally, under sharecropping arrangements, increased risk of eradication will make the tenants worse off, while landlords may benefit.
Shot Noise in Negative-Differential-Conductance Devices
Creators: name: Song, W.
name: Mendez, E. E.
name: Kuznetsov, V.
name: Nielsen, B.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have compared the shot-noise properties at T = 4.2 K of a double-barrier resonant-tunneling diode and a superlattice tunnel diode, both of which exhibit negative differential-conductance (NDC) in their current-voltage characteristics. While the noise spectral density of the former device was greatly enhanced over the Poissonian value of 2eI in the NDC region, that of the latter device remained 2eI. This result implies that charge accumulation, not system instability, is responsible for shot-noise enhancement in NDC devices.
description: 3 pages, 2 figures, submitted to Applied Physics Letters
Philopterus atratus Nitzsch 1818
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Philopterus
Philopterus atratus

description: Philopterus atratus Nitzsch, 1818
 Report: [1] Touleshkov (1960b).
 Host: Corvus frugilegus L. [1].
 Distribution in Bulgaria: Sofia [1].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 35, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
Uniformly accelerated traveler in an FLRW universe
Creators: name: Kerachian, Morteza
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper provides an analytical treatment of accelerated and geodesic motion within the framework of the Friedmann -Lemaitre-Robertson-Walker (FLRW) spacetime. By employing conformal time transformations we manage to convert second order differential equations of motion in FLRW spacetime to first order equations in the conformally transformed spacetime. This allows us to derive a general analytical solution in closed-form for accelerated motion in spatially curved FLRW spacetime. We provide few examples of this general solution for the spatially flat cases. The last part of our work focuses on the return journey for a traveler exploring a FLRW universe. We derive certain condition for de Sitter universe that must be satisfied in order to have an actual return journey.
description: 11 pages, 6 figures
Valuing Beef Herd Dam Genetic Pedigree Management
Creators: name: Robertson-Carolan, Jessica
name: Parcell, Joseph L.
name: Patterson, David J.
name: Eakins, Roger
name: Franken, Jason R.V.
name: Robertson-Carolan, Jessica
name: Parcell, Joseph L.
name: Patterson, David J.
name: Eakins, Roger
name: Franken, Jason R.V.
Publisher: name: Unknown
Year: 2011
Subjects: Livestock Production/Industries

description: An important component of the beef cow herd is the contribution of the dam to herd profitability. Yet, no research has contributed to valuing the dam’s genetic contribution to herd quality performance or profitability. This paper examines how managing for dam genetic pedigree quality grade affected the outcome of calf crop quality, and simulates the economic impact for different levels of quality premium. The results show that managing for dam pedigree genetics beyond three generations in the herd has little economic value for producers.
Safety and Privacy Tips for Online Sex Workers
Creators: name: Teela Sanders
Publisher: name: University of Leicester
Year: 2019
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 160299 Criminology not elsewhere classified
subject: FOS: Law

description: There are 4 information sheets here created by the sex work advisory group in 4 languages - English; Portuguese; Mandarin; Romanian
Minnesota Farm Management Service Notes No. 25
Creators: name: Garey, L.F.
name: Hoverstad, Andrew T.
name: Cavert, W.L.
name: Garey, L.F.
name: Hoverstad, Andrew T.
name: Cavert, W.L.
Publisher: name: Unknown
Year: 1924
Subjects: Crop Production/Industries
Farm Management

description: Alfalfa in Minnesota; Comparative costs and value of Alfalfa and tame hay; Comparative adaptability of lagumes in Minnesota
HIV-assoziierte Neuritis des Nervus vestibulocochlearis. Fallbeschreibung und systematische Literaturanalyse der HIV-assoziierten Polyneuropathien
Creators: name: Molinaro, Marisa
Publisher: name: Universität Bern
Year: 2014
Subjects: 610 Medicine & health

description: Die Polyneuropathien sind Komplikationen der Infektion mit dem Human- Immunodeficiency-Virus (HIV). Dazu gehören Polyradikulopathien, distale (sensible) Polyneuropathien, Mono- und Oligoneuropathien und brachiale Neuritiden. Selten gibt es Formen, die sich nicht kategorisieren lassen. In dieser Dissertation präsentieren wir einen aussergewöhnlichen Fall einer bilateralen Neuritis des Nervus vestibulo-cochlearis (N. vestibulocochlearis). In einer ausgedehnten Literaturrecherche ist das erst der dritte beschriebene Fall. Gleichzeitig wurde die Literaturrecherche genutzt, um epidemiologische, klinische und laborchemische Parameter der HIV-assoziierten Polyneuropathien zu analysieren. Dazu wurden Daten von 539 Patientinnen aus 67 Publikationen extrahiert und ausgewertet. Die Daten wurden bezüglich ihrer Qualität gewertet, um den Schlussfolgerungen eine Gewichtung zu geben. Die Literaturanalyse ergab, dass die meisten Daten zu HIVassoziierten – und bezüglich antiretroviraler Therapie (ART) naiven – Polyneuropathien von afrikanischen Patienten stammen. Die meisten europäischen und nordamerikanischen Studien zu diesem Thema wurden vor 1996 publiziert. Polyradikulopathien präsentieren sich typischerweise früh und distale (sensible) Polyneuropathien spät in der HIV-Krankheit. Das Guillain-Barré-Syndrom war das häufigste Krankheitsbild der Polyradikulopathien. Die häufigste Präsentation distaler Polyneuropathien sind Sensibilitätsausfälle an den unteren Extremitäten. Bei den Mono- und Oligoneuropathien hat ein Grossteil der Personen Mononeuropathien, wobei der N. facialis am häufigsten betroffen ist. Die Rolle der ART zur Erholung der Neuropathien konnte nicht beurteilt werden. Unter den HIV-assoziierten Polyneuropathien haben die distalen (sensiblen) Polyneuropathien die schlechtere und die Polyradikulopathien und Mono- oder Oligoneuropathien die bessere Prognose bezüglich Erholung
Philopterus cincli
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Philopterus
Philopterus cincli

description: Philopterus cincli (Denny, 1842)
 Report: [1] Touleshkov (1974).
 Host: Cinclus cinclus (L.) [1].
 Distribution in Bulgaria: Belogradchik, Botevgrad [1].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 35, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
Main Injector LCW (Low Conductivity Water) Control System
Creators: name: Seino, K. C.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: There are six service buildings uniformly spaced along the perimeter of MI (Main Injector). A total of 18 LCW pumps were installed around the MI ring with 3 pumps per building. Approximately 8,000 GPM of LCW is required to cool magnets, bus and power supplies in the MI enclosure and service buildings. In each service building, a PLC control system controls pumps and valves, and it monitors pressures, flow, resistivities and temperatures. The PLC hardware system consists of a Gateway module and a variety of I/O modules, which are made by Sixnet of Clifton Park, NY. The control system communicates with other buildings including MCR (Main Control Room) via an Ethernet link and front-end computers. For more details of the MI LCW control system, refer to [1] and [2]. One of the key elements of the PLC software is called ISaGRAF workbench, which was created by CJ International of Seyssins, France. The workbench provides a comprehensive control-programming environment, where control programs can be written in five different languages. For more details of ISaGRAF, refer to [3].
description: 3 pages, 2 figures
Ott-Antonsen ansatz is the only admissible truncation of a circular cumulant series
Creators: name: Goldobin, Denis S.
name: Dolmatova, Anastasiya V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The cumulant representation is common in classical statistical physics for variables on the real line and the issue of closures of cumulant expansions is well elaborated. The case of phase variables significantly differs from the case of linear ones; the relevant order parameters are the Kuramoto-Daido ones but not the conventional moments. One can formally introduce `circular' cumulants for Kuramoto-Daido order parameters, similar to the conventional cumulants for moments. The circular cumulant expansions allow to advance beyond the Ott-Antonsen theory and consider populations of real oscillators. First, we show that truncation of circular cumulant expansions, except for the Ott-Antonsen case, is forbidden. Second, we compare this situation to the case of the Gaussian distribution of a linear variable, where the second cumulant is nonzero and all the higher cumulants are zero, and elucidate why keeping up to the second cumulant is admissible for a linear variable, but forbidden for circular cumulants. Third, we discuss the implication of this truncation issue to populations of quadratic integrate-and-fire neurons [E. Montbrió, D. Pazó, A. Roxin, Phys. Rev. X, vol. 5, 021028 (2015)], where within the framework of macroscopic description, the firing rate diverges for any finite truncation of the cumulant series, and discuss how one should handle these situations. Fourth, we consider the cumulant-based low-dimensional reductions for macroscopic population dynamics in the context of this truncation issue. These reductions are applicable, where the cumulant series exponentially decay with the cumulant order, i.e., they form a geometric progression hierarchy. Fifth, we demonstrate the formation of this hierarchy for generic distributions on the circle and experimental data for coupled biological and electrochemical oscillators.
description: 15 pages, 6 figures
Quantum Andreev map: A paradigm of quantum chaos in superconductivity
Creators: name: Jacquod, Ph.
name: Schomerus, H.
name: Beenakker, C. W. J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We introduce quantum maps with particle-hole conversion (Andreev reflection) and particle-hole symmetry, which exhibit the same excitation gap as quantum dots in the proximity to a superconductor. Computationally, the Andreev maps are much more efficient than billiard models of quantum dots. This makes it possible to test analytical predictions of random-matrix theory and semiclassical chaos that were previously out of reach of computer simulations. We have observed the universal distribution of the excitation gap for large Lyapunov exponent and the logarithmic reduction of the gap when the Ehrenfest time becomes comparable to the quasiparticle dwell time.
Philopterus citrinellae
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Philopterus
Philopterus citrinellae

description: Philopterus citrinellae (Schrank, 1776)
 Reports: [1] Balát (1958); [2] Touleshkov (1961a); [3] Touleshkov (1961c); [4] Touleshkov (1962); [5] Touleshkov (1964a); [6] Touleshkov (1974); [7] Ilieva (2005).
 Synonyms: Penenirmus blagoveshtchenskyi Touleshkov [2, 3, 4]; Philopterus chloridis (Schrank) [6]; Philopterus pyrrhulae (Schranck) [4, 6]; Philopterus cumulatus (Złotorzycka) [7].
 Hosts: Carduelis chloris (L.) [6]; Emberiza calandra L. [1, 2, 3, 4, 5, 6, 7]; E. citrinella L. [4, 6, 7]; E. hortulana L.* [5]; Pyrrhula pyrrhula (L.) [1, 4, 6].
 Distribution in Bulgaria: Pirin Mountain – Banderitza, Sliven, Maslen Nos Cape [1]; Veselie (Burgas Region), Grudovo (Burgas Region) [2, 3]; Musomiste (Blagoevgrad Region), Petrich, Koprivlen (Blagoevgrad Region) [4]; Dositeevo (Haskovo Region), Starkovo, Malo Konare (Pazardzhik Region), Asenovgrad, Stara Zagora, Bryagovo (Haskovo Region), Svilengrad [5]; Godech, Berkovitsa, Botevgrad, Teteven, Karlovo, Gabrovo, Zheravna, Gradets (Sliven Region), Vratsa [6]; Nova Cherna (Silistra Region) [7].
 Remarks: According to Palma and Price (2006) Penenirmus blagoveshtchenskyi, described by Touleshkov (1961c) and Philopterus cumulatus (Złotorzycka, 1964) are synonyms of Philoterus citrinellae.
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 35, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
Brownian theory of 2D turbulence and generalized thermodynamics
Creators: name: Chavanis, Pierre-Henri
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a new parametrization of 2D turbulence based on generalized thermodynamics and Brownian theory. Explicit relaxation equations are obtained that should be easily implementable in numerical simulations for three typical types of turbulent flows. Our parametrization is related to previous ones but it removes their defects and offers attractive new perspectives.
description: Submitted to Phys. Rev. Lett
Vertical Industries Requirements Analysis & Targeted KPIs for Advanced 5G Trials
Creators: name: Doukoglou, Tilemachos
name: Gezerlis, Velissarios
name: Trichias, Konstantinos
name: Kostopoulos, Nikos
name: Vrakas, Nikos
name: Bougioukos, Marios
name: Legouable, Rodolphe
Publisher: name: arXiv
Year: 2019
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Just before the commercial roll out of European 5G networks, 5G trials in realistic environments have been recently initiated all around Europe, as pat of the Phase 3 projects of 5GPPP H2020 program [1]. The goal is to showcase 5G's capabilities and to convince stakeholders about its value adding business potential. The approach is to offer advanced 5G connectivity to real vertical industries and showcase how it enables them to overcome existing 4G network limitations and other long standing issues. The 5G EVE H2020 5GPPP project [2] offers cutting edge 5G end to end facilities (in 4 countries) to diversified vertical industry experimenters. The objective is to understand the needs of prominent industries across Europe and to offer tailor made 5G experience to each and every one of them. This paper contributes to the understanding of vertical services' needs, by offering a thorough and concise vertical requirements analysis methodology, including an examination of the 4G limitations. It also provides real life values for the targeted KPIs of three vertical sectors namely, Smart Industry (4.0), Smart Cities / Health and Smart Energy, while assisting market roll out by prioritizing their connectivity needs.
description: EuCNC 2019
A Simple Derivation of the JIMWLK Equation
Creators: name: Mueller, A. H.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A simple derivation of the Jalilian-Marian, Iancu, McLerran, Weigert, Leonidov and Kovner (JIMWLK) equation for the evolution of small-x QCD wavefunctions is given. The derivation makes use of the equivalence between the evolution of a (in general complicated) small-x wavefunction with that of the evolution of the (simple) dipole probing the wavefunction in a high energy scattering.
description: 11 pages, 3 figures, corrected typo in abstract title
Die Beziehung zwischen Web Services und UDDI.pdf
Creators: name: Faseli, Omid
Publisher: name: figshare
Year: 2019
Subjects: subject: 80704 Information Retrieval and Web Search
subject: FOS: Media and communications
subject: Information Systems
subject: FOS: Computer and information sciences
subject: 80608 Information Systems Development Methodologies
subject: 80609 Information Systems Management
subject: 80705 Informetrics

description: Web Services genießen weite Akzeptanz als wichtige Implementation einer Service Orientierten Architektur (SOA). Ein Web Service ist ein Stück Software, das als abgeschlossene Einheit einer wohl definierten Funktionalität bereitsteht und dessen veröffentlichte Schnittstelle mittels XML (eXtensible Markup Language) -Nachrichten
über das Internet nutzbar ist. Web Service Spezifikationen sind unabhängig von der Programmiersprache, dem Betriebssystem und der Hardware.
Software Assets spielen hier eine wichtige Rolle. UDDI (Universal Description, Discovery and Integration ) ist ein Verzeichnis mit dem ein Kunde oder ein Unternehmer beliebige Services oder Waren über das Web
zwischen verschiedenen Anbietern auswählen kann.Das UDDI Protokoll ist ein zentrales Element einer Gruppe von verwandten Standards. UDDI hilft, B2B (Business-To-Business) Interaktionen zu erweitern und zu vereinfachen. Der funktionelle Zweck einer UDDI Registrierung ist, die
Repräsentation von Daten und Metadaten über Web Services möglich zu machen. In einer UDDI Registrierung können verschiedene Informationstypen abgelegt werden. Weiters existieren Blue Pages, die begriffliche Information zusammenfassen.
Real Lagrangians in Calabi-Yau Threefolds
Creators: name: Argüz, Hülya
name: Prince, Thomas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 14J33, 53D12, 14P25

description: We compute the mod $2$ cohomology groups of real Lagrangians in Calabi-Yau threefolds using well-behaved torus fibrations constructed by Gross. To do this we study a long exact sequence introduced by Castaño-Bernard and Matessi, which relates the cohomology of the Lagrangians to the cohomology of the Calabi-Yau. We show that the connecting homomorphism in this sequence is given by the map squaring divisor classes in the mirror Calabi-Yau.
description: 31 pages, 8 figures. Improved exposition of Appendix A and corrected Example 4.11. Minor adjustments throughout
Quantum critical behavior and thermodynamics of the repulsive one-dimensional Hubbard model in a magnetic field
Creators: name: Patu, Ovidiu I.
name: Klumper, Andreas
name: Foerster, Angela
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Even though the Hubbard model is one of the most fundamental models of highly correlated electrons, analytical and numerical data describing its thermodynamics at nonzero magnetization are relatively scarce. We present a detailed investigation of the thermodynamic properties for the one dimensional repulsive Hubbard model in the presence of an arbitrary magnetic field for all values of the filling fraction and temperatures as low as $T \sim 0.005\, t.$ Our analysis is based on the system of integral equations derived in the quantum transfer matrix framework. We determine the critical exponents of the quantum phase transitions and also provide analytical derivations for some of the universal functions characterizing the thermodynamics in the vicinities of the quantum critical points. Extensive numerical data for the specific heat, susceptibility, compressibility, and entropy are reported. The experimentally relevant double occupancy presents an interesting doubly nonmonotonic temperature dependence at intermediate values of the interaction strength and also at large repulsion and magnetic fields close to the critical value. The susceptibility in zero magnetic field has a logarithmic singularity at low temperatures for all filling factors similar to the behavior of the same quantity in the XXX spin chain. We determine the density profiles for a harmonically trapped system and show that while the total density profile seems to depend mainly on the value of chemical potential at the center of the trap the distribution of phases in the inhomogeneous system changes dramatically as we increase the magnetic field.
description: 26 pages, 23 figures, RevTeX 4.1
Event-by-event fluctuations in hydrodynamical description of heavy-ion collisions
Creators: name: Aguiar, C. E.
name: Hama, Y.
name: Kodama, T.
name: Osada, T.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Effects caused by the event-by-event fluctuation of the initial conditions in hydrodynamical description of high-energy heavy-ion collisions are investigated. Non-negligible effects appear for several observable quantities, even for a fixed impact parameter $\vec b $. They are sensitive to the equation of state, being the dispersions of the observable quantities in general smaller when the QGP phase appears at the beginning of hydrodynamic evolution than when the fluid remains hadron gas during whole the evolution.
description: 4 pages, 4 figures, talk presented to Quark Matter 2001 Conference
Exact Results for the Boundary Energy of One-Dimensional Bosons
Creators: name: Reichert, Benjamin
name: Astrakharchik, Grigori E.
name: Petkovic, Aleksandra
name: Ristivojevic, Zoran
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study bosons in a one-dimensional hard-wall box potential. In the case of contact interaction, the system is exactly solvable by the Bethe ansatz, as first shown by Gaudin in 1971. Although contained in the exact solution, the boundary energy in the thermodynamic limit for this problem is only approximately calculated by Gaudin, who found the leading order result at weak repulsion. Here we derive an exact integral equation that enables one to calculate the boundary energy in the thermodynamic limit at an arbitrary interaction. We then solve such an equation and find the asymptotic results for the boundary energy at weak and strong interactions. The analytical results obtained from the Bethe ansatz are in agreement with the ones found by other complementary methods, including quantum Monte Carlo simulations. We study the universality of the boundary energy in the regime of a small gas parameter by making a comparison with the exact solution for the hard rod gas.
description: six pages main text and three pages supplemental material; to appear in Physical Review Letters
Flattened Axion Monodromy Beyond Two Derivatives
Creators: name: Pedro, Francisco G.
name: Westphal, Alexander
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study string inspired two-field models of large-field inflation based on axion monodromy in the presence of an interacting heavier modulus. This class of models has enough structure to approximate at least part of the backreaction effects known in full string theory, such as kinetic mixing with the axion, and flattening of the scalar potential. Yet, it is simple enough to fully describe the structure of higher-point curvature perturbation interactions driven by the adjusting modulus backreaction dynamics. We find that the presence of the heavy modulus can be described via two equivalent effective field theories, both of which can incorporate reductions of the speed of sound. Hence, the presence of heavier moduli in axion monodromy inflation constructions will necessarily generate some amount of non-Gaussianity accompanied by changes to $n_s$ and $r$ beyond what results from just from the well known adiabatic flattening backreaction.
description: LaTeX, 1+26 pages, 9 figures
Philopterus corvi
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Philopterus
Philopterus corvi

description: Philopterus corvi (Linnaeus, 1758)
 Report: [1] Touleshkov (1960b).
 Host: Corvus corax L. [1].
 Distribution in Bulgaria: Sofia, Bosnek, Bankya (Sofia Region), Haskovo [1].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 36, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
Improvement of Space Debris Orbits
Creators: name: Cordelli, Emiliano
Publisher: name: Universität Bern
Year: 2017
Subjects: 520 Astronomy

description: The increasing amount of space debris requires huge efforts for the tracking networks in order to maintain the orbits of all the objects. The precise knowledge of the positions of space debris objects is fundamental for collision avoidance maneuvers performed by satellite operators and for future active debris removal missions. It is very well known that the accuracy of an orbit determination process depends on the kind of observables used, their accuracy, the length of the observed arc, the number of observations, the observer orbit, and the observer-target geometry of the observations. In this thesis an in-depth study is carried out to understand how the mentioned parameters influence the orbit determination accuracy and how we can improve the quality of the estimated orbits. After a brief introduction on the least squares adjustment algorithm and on the way of propagating and manipulating the resulting covariance matrix, we will focus essentially on the influence of the object-observer relative geometry and of the use of different observables for the orbit determination of space debris. The object-observer relative geometry is approached as an information gain problem and it is studied using simulations and covariance analysis. The main aim of the covariance analysis is to identify the optimal follow-up strategy as a function of the object-observer geometry, the interval between follow-up observations and the shape of the orbit. This analysis is applied to every orbital regime but particular attention is dedicated to the highly-populated space debris orbits. Furthermore, several particular cases are analyzed with this method: more than two follow-ups observations, the influence of a second observing station, and the introduction of the distance as second observable. The study on the combination of different types of observables is carried out investigating the influence of addition of the laser range measurements to the classical optical astrometric observations in terms of improved accuracy of the determined orbit. In particular, after some validation tests to prove the effectiveness of the implemented algorithm, it will be shown how different kinds of observables influence the accuracies of the estimated orbital parameters. Then, the influence of the observation geometry is analyzed and finally the improvements achieved on the orbit prediction, for different orbital regimes, will be shown. All the mentioned tests are performed using real ranges from the International Laser Ranging Service (ILRS) stations and real angular/laser measurements provided by sensors of the Swiss Optical Ground Station and Geodynamics Observatory Zimmerwald owned by the Astronomical Institute of the University of Bern (AIUB).
Augmenting Type Inference with Lightweight Heuristics
Creators: name: Lazarevic, Nevena
Publisher: name: Universität Bern
Year: 2017
Subjects: 000 Computer science, knowledge & systems
510 Mathematics

description: Static type information facilitates program comprehension and analysis. Yet, such information is absent in dynamically-typed languages, and that increases the time needed for software maintenance. Type inference algorithms may provide type information to developers, but in order to be fast and assist in development phase, they sacrifice the precision for speed. One of the biggest obstacles for their precision is polymorphism presence. In this thesis we first analyse the prevalence of polymorphism in object-oriented software, to assess the criticality it imposes on simple type inference. We find that polymorphism is omnipresent in object-oriented code, and that static analysis in dynamically-typed languages is also hampered by the usage of cross-hierarchy polymorphism, i.e., duck typing. As this big obstacle for static code analysis cannot be bypassed, we propose the need for lightweight heuristics to tackle the problem of imprecision of simple type inference algorithms. Four lightweight heuristics are employed to improve the performance of two simple and fast type inference approaches. These heuristics are founded on the source code and run-time information that are easy to collect without interrupting the workflow of a developer. The heuristics are evaluated and compared with the underlying algorithms based on their inference time and precision. All of them show a significant improvement when compared to the basic algorithm. They introduce a negligible overhead on the inference time, thus we deem them usable during regular coding tasks.
Electroweakly interacting scalar and gauge bosons, and leptons, from field equations on spin 5+1 dimensional space
Creators: name: Besprosvany, J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Unification ideas motivate the formulation of field equations on an extended spin space. Demanding that the Poincare symmetry be maintained, one derives scalar symmetries that are associated with flavor and gauge groups. Boson and fermion solutions are obtained with a fixed representation. A field theory can be equivalently written and interpreted in terms of elements of such space and is similarly constrained. At 5+1 dimensions, one obtains isospin and hypercharge SU(2)_L X U(1) symmetries, their vector carriers, two-flavor charged and chargeless leptons, and scalar particles. Mass terms produce breaking of the symmetry to an electromagnetic U(1), a Weinberg's angle with sin^2(theta_W)=.25, and additional information on the respective coupling constants. Their underlying spin symmetry gives information on the particles' masses; one reproduces the standard-model ratio M_Z/M_W, and predicts a Higgs mass of M_H ~114 GeV, at tree level.
description: 20 pages, 4 tables
Experimental observation of high-order quantum accelerator modes
Creators: name: Schlunk, S.
name: d'Arcy, M. B.
name: Gardiner, S. A.
name: Summy, G. S.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Using a system consisting of a freely falling cloud of cold cesium atoms periodically kicked by pulses from a vertical standing wave of laser light, we present the first experimental observation of high-order quantum accelerator modes. This confirms the recent prediction by Fishman, Guarneri, and Rebuzzini [Phys. Rev. Lett. 89, 084101 (2002)]. We also show how these accelerator modes can be identified with the stable regions of phase space in a classical-like chaotic system, despite their intrinsically quantum origin.
description: 4 pages, 3 figures, submitted to Phys. Rev. Lett
Applications of Mathematical Programming in Personnel Scheduling
Creators: name: Rihm, Tom
Publisher: name: Universität Bern
Year: 2017
Subjects: 650 Management & public relations

description: In the few decades of its existence, mathematical programming has evolved into an important branch of operations research and management science. This thesis consists of four papers in which we apply mathematical programming to real-life personnel scheduling and project management problems. We develop exact mathematical programming formulations. Furthermore, we propose effective heuristic strategies to decompose the original problems into subproblems that can be solved effciently with tailored mathematical programming formulations. We opt for solution methods that are based on mathematical programming, because their advantages in practice are a) the exibility to easily accommodate changes in the problem setting, b) the possibility to evaluate the quality of the solutions obtained, and c) the possibility to use general-purpose solvers, which are often the only software available in practice.
Charged Particles: A Builder's Guide
Creators: name: Bagan, Emili
name: Horan, Robin
name: Lavelle, Martin
name: McMullan, David
name: Tanimura, Shogo
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is sometimes claimed that one cannot describe charged particles in gauge theories. We identify the root of the problem and present an explicit construction of charged particles. This is shown to have good perturbative properties and, asymptotically before and after scattering, to recover particle modes.
description: 6 pages, LaTeX, to appear in proceedings of Sixth Workshop on Non-Perturbative Quantum Chromodynamics, Paris, June 2001
Symbolic summation methods and hypergeometric supercongruences
Creators: name: Wang, Chen
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: In this paper, we establish the following two congruences: \begin{gather*} \sum_{k=0}^{(p+1)/2}(3k-1)\frac{\left(-\frac{1}{2}\right)_k^2\left(\frac{1}{2}\right)_k4^k}{k!^3}\equiv p-6p^3\left(\frac{-1}{p}\right)+2p^3\left(\frac{-1}{p}\right)E_{p-3}\pmod{p^4},\\ \sum_{k=0}^{p-1}(3k-1)\frac{\left(-\frac{1}{2}\right)_k^2\left(\frac{1}{2}\right)_k4^k}{k!^3}\equiv p-2p^3\pmod{p^4}, \end{gather*} where $p>3$ is a prime, $E_{p-3}$ is the $(p-3)$-th Euler number and $\left(-\right)$ is the Legendre symbol. The first congruence modulo $p^3$ was conjectured by Guo and Schlosser recently.
description: 11 pages
Real-time localization using software defined radio
Creators: name: Alyafawi, Islam Fayez Abd
Publisher: name: Universität Bern
Year: 2015
Subjects: 000 Computer science, knowledge & systems
510 Mathematics

description: Service providers make use of cost-effective wireless solutions to identify, localize, and possibly track users using their carried MDs to support added services, such as geo-advertisement, security, and management. Indoor and outdoor hotspot areas play a significant role for such services. However, GPS does not work in many of these areas. To solve this problem, service providers leverage available indoor radio technologies, such as WiFi, GSM, and LTE, to identify and localize users. We focus our research on passive services provided by third parties, which are responsible for (i) data acquisition and (ii) processing, and network-based services, where (i) and (ii) are done inside the serving network. For better understanding of parameters that affect indoor localization, we investigate several factors that affect indoor signal propagation for both Bluetooth and WiFi technologies. For GSM-based passive services, we developed first a data acquisition module: a GSM receiver that can overhear GSM uplink messages transmitted by MDs while being invisible. A set of optimizations were made for the receiver components to support wideband capturing of the GSM spectrum while operating in real-time. Processing the wide-spectrum of the GSM is possible using a proposed distributed processing approach over an IP network. Then, to overcome the lack of information about tracked devices’ radio settings, we developed two novel localization algorithms that rely on proximity-based solutions to estimate in real environments devices’ locations. Given the challenging indoor environment on radio signals, such as NLOS reception and multipath propagation, we developed an original algorithm to detect and remove contaminated radio signals before being fed to the localization algorithm. To improve the localization algorithm, we extended our work with a hybrid based approach that uses both WiFi and GSM interfaces to localize users. For network-based services, we used a software implementation of a LTE base station to develop our algorithms, which characterize the indoor environment before applying the localization algorithm. Experiments were conducted without any special hardware, any prior knowledge of the indoor layout or any offline calibration of the system.
South East Food Hub: Key Lessons & Recommendations from a Food Hub in Melbourne’s South East
Creators: name: Open Food Network
name: KIRSTEN LARSEN
name: Clarke, Jodi
Publisher: name: figshare
Year: 2019
Subjects: subject: 91010 Packaging, Storage and Transportation (excl. Food and Agricultural Products)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We have summarised our key lessons and recommendations in this report to share our experience of the South East Food Hub and to help guide others to explore, initiate and establish community food hub enterprises.
Three essays on the concept of trust and its foundations
Creators: name: Bauer, Paul Cornelius
Publisher: name: Universität Bern
Year: 2015
Subjects: 320 Political science

description: The present dissertation focuses on trust and comprises three empirical essays on the concept itself and its foundations. All three essays investigate trust as an expectation and rely on selfreport measures of trust. Whereas the first two chapters investigate social trust, the third chapter investigates political trust. Essentially, there are three related important debates to which the following chapters contribute. A first debate discusses problems with current selfreport measures. Scholars recently started to question whether standard trust questions really measure the same across countries and languages. Chapter 1 engages in this debate. Using data from Switzerland it studies whether different trust questions measure the same latent trust constructs across individuals belonging to three different culturallinguistic regions. The second debate concerns the socalled forms or dimensions of trust. Recently, scholars started investigating whether trust is a onedimensional construct, i.e. whether an individual's trust judgment differs for categories of trustees such as strangers, neighbors, family members and friends or not. Relying on confirmatory factor analysis Chapter 2 investigates whether individuals really do make a difference between different trustee categories and to what extent these judgments can be summarized into higherorder latent trust constructs. The third debate is concerned with causes of differences in trust across humans. Chapter 3 focuses on the role of laterlife experiences, more precisely victimization experiences and investigates their causal relationship with generalized social trust. Chapter 4 focuses on the impact of direct democratic institutions on the trust relationship between citizens and political authorities.
Philopterus crassipes
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Philopterus
Philopterus crassipes

description: Philopterus crassipes (Burmeister, 1838)
 Reports: [1] Balát (1958); [2] Touleshkov (1960b).
 Host: Nucifraga caryocatactes (L.) [1, 2].
 Distribution in Bulgaria: Pirin Mountain – Banderitza [1]; Dolni Bogrov (Sofia Region), Lozen Mountain, Vitosha Mountain, Pirin Mountain near Bansko [2].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 36, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
Quantum Log-Corrections to Swampland Conjectures
Creators: name: Blumenhagen, Ralph
name: Brinkmann, Max
name: Makridou, Andriana
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Taking the anti-de Sitter minimum of KKLT and the large volume scenario at face value, we argue for the existence of logarithmic quantum corrections to AdS swampland conjectures. If these conjectures receive such corrections, it is natural to suspect that they also arise for other swampland conjectures, in particular the dS swampland conjecture. We point out that the proposed $\log$-corrections are in accord with the implications of the recently proposed trans-Planckian censorship conjecture. We also comment on the emergence proposal in the context of both perturbative flux models and the KKLT construction.
description: 24 pages; v4: clarified naming convention, references added; version accepted to JHEP
Electrical resistivity at large temperatures: Saturation and lack thereof
Creators: name: Calandra, M.
name: Gunnarsson, O.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Many transition metal compounds show saturation of the resistivity at high temperatures, T, while the alkali-doped fullerenes and the high-Tc cuprates are usually considered to show no saturation. We present a model of transition metal compounds, showing saturation, and a model of alkali-doped fullerenes, showing no saturation. To analyze the results we use the f-sum rule, which leads to an approximate upper limit for the resistivity at large T. For some systems and at low T, the resistivity increases so rapidly that this upper limit is approached for experimental T. The resistivity then saturates. For a model of transition metal compounds with weakly interacting electrons, the upper limit corresponds to a mean free path consistent with the Ioffe-Regel condition. For a model of the high Tc cuprates with strongly interacting electrons, however, the upper limit is much larger than the Ioffe-Regel condition suggests. Since this limit is not exceeded by experimental data, the data are consistent with saturation also for the cuprates. After "saturation" the resistivity usually grows slowly. For the alkali-doped fullerenes, "saturation" can be considered to have happened already for T=0, due to orientational disorder. For these systems, however, the resistivity grows so rapidly after "saturation" that this concept is meaningless. This is due to the small band width and to the coupling to the level energies of the important phonons.
description: 22 pages, RevTeX, 19 eps figures, additional material available at http://www.mpi-stuttgart.mpg.de/andersen/fullerene/
Amending the halo model to satisfy cosmological conservation laws
Creators: name: Chen, Alice Y.
name: Afshordi, Niayesh
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: One of the most powerful tools in the arsenal of theoretical cosmologists is the halo model of large scale structure, which provides a phenomenological description of nonlinear structure in our universe. However, it is well known that there is no simple way to impose conservation laws in the halo model. This can severely impair the predictions on large scales for observables such as weak lensing or the kinematic Sunyaev-Zel'dovich effect, which should satisfy mass and momentum conservations, respectively. For example, the standard halo model overpredicts weak lensing power spectrum by $> 8\%$ on scales $>20$ degrees. To address this problem, we present an $Amended ~ Halo ~ Model$, explicitly separating the linear perturbations from $compensated$ halo profiles. This is guaranteed to respect conservation laws, as well as linear theory predictions on large scales. We then provide a simple fitting function for the compensated halo profiles, and discuss the modified predictions for 1-halo and 2-halo terms, as well as other cosmological observations such weak lensing power spectrum. Furthermore, we argue that the amended halo model provides a more accurate framework to capture physical effects that happen in the process of cosmological structure formation.
description: Changes made to Figures 1-5 and Tables II-IV