cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Design and field testing of a rover with an actively articulated suspension system in a Mars analog terrain
Creators: name: Cordes, Florian
name: Kirchner, Frank
name: Babu, Ajish
Publisher: name: Wiley
Year: 2018
Subjects: subject: exploration
subject: field experimentation
subject: planetary robotics
subject: rover locomotion
subject: wheeled robots
subject: 510

description: This study presents the electromechanical design, the control approach, and the results of a field test campaign with the hybrid wheeled-leg rover SherpaTT. The rover ranges in the 150 kg class and features an actively articulated suspension system comprising four legs with actively driven and steered wheels at each leg’s end. Five active degrees of freedom are present in each of the legs, resulting in 20 active degrees of freedom for the complete locomotion system. The control approach is based on force measurements at each wheel mounting point and roll–pitch measurements of the rover’s main body, allowing active adaption to sloping terrain, active shifting of the center of gravity within the rover’s support polygon, active roll–pitch influencing, and body-ground clearance control. Exteroceptive sensors such as camera or laser range finder are not required for ground adaption. A purely reactive approach is used, rendering a planning algorithm for stability control or force distribution unnecessary and thus simplifying the control efforts. The control approach was tested within a 4-week field deployment in the desert of Utah. The results presented in this paper substantiate the feasibility of the chosen approach: The main power requirement for locomotion is from the drive system, active adaption only plays a minor role in power consumption. Active force distribution between the wheels is successful in different footprints and terrain types and is not influenced by controlling the body’s roll–pitch angle in parallel to the force control. Slope-climbing capabilities of the system were successfully tested in slopes of up to 28° inclination, covered with loose soil and duricrust. The main contribution of this study is the experimental validation of the actively articulated suspension of SherpaTT in conjunction with a reactive control approach. Consequently, hardware and software design as well as experimentation are part of this study.
Spodoptera frugiperda: risks and control measures
Creators: name: Baufeld, Peter
Publisher: name: Zenodo
Year: 2021
Subjects: Euphresco, plant health, biology, monitoring, non-chemical management, climate change, modelling, biological control, Spodoptera frugiperda

description: Success story of the Euphresco project 2018-F-304 'Spodoptera frugiperda: spreading, establishment, damaging potential and control measures (FAW-spedcom)'
description: Project funded through the Euphresco network
Four loop twist two, BFKL, wrapping and strings
Creators: name: Bajnok, Zoltan
name: Janik, Romuald A.
name: Lukowski, Tomasz
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The anomalous dimensions of twist two operators have to satisfy certain consistency requirements derived from BFKL. For N=4 SYM it was shown that at four loops, the anomalous dimensions derived from the all-loop asymptotic Bethe ansatz do not pass this test. In this paper we obtain the remaining wrapping part of these anomalous dimensions from string theory and show that these contributions exactly cure the problem and lead to agreement with both LO and NLO BFKL expectations.
description: 34 pages, 1 figure; v3: typos fixed, references added; v4: references added
Constraints on Extragalactic Point Source Flux from Diffuse Neutrino Limits
Creators: name: Silvestri, Andrea
name: Barwick, Steven W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We constrain the maximum flux from extragalactic neutrino point sources by using diffuse neutrino flux limits. We show that the maximum flux from extragalactic point sources is E^2(dN/dE) < 1.4 x 10^-9 (L_nu/2x10^43 erg/s)^1/3 GeV cm-^2 s^-1 from individual point sources with average neutrino luminosity per decade, L_nu. It depends only slightly on factors such as the inhomogeneous matter density distribution in the local universe, the luminosity distribution, and the assumed spectral index. The derived constraints are at least one order of magnitude below the current experimental limits from direct searches. Significant constraints are also derived on the number density of neutrino sources and on the total neutrino power density.
description: 7 pages, 3 figures, and 2 tables
Degeneration of the germinal epithelium in the mouse and rat testis with respect to the seminiferous cycle following ligation of the vasa efferentia.
Creators: name: Langford, George Albert
Publisher: name: University of British Columbia
Year: 2011

description: The manner in which the cycle of the germinal epithelium is affected during progressive atrophy of seminiferous tubules, and the form of cellular degeneration that occurs at each stage of the cycle has been studied in adult rat and mouse testis following unilateral ligation of the vasa efferentia. Following the ligation, which was placed as close to the testis as possible, groups of animals were killed at postoperative periods ranging from 1 to 10 days for rats, and 16 hours to 7 days for mice. The stages of the cycle were identified by the periodic acid-Schiff-haematoxylin technique using the classification of Leblond and Clermont (1952) and Oakberg (1956a). The timing of the cycle did not appear to be disrupted by the degenerative changes that resulted: at all postoperative periods, the viable germ cells were associated with the same stages of the cycle as they are in the normal testis. The frequency with which each stage of the cycle occurred was measured in the ligated testis of the mouse and found to be unchanged from that established in the control testis. The atrophic reactions at each stage of the cycle followed a consistent and well-defined sequence of events which have been described in the form of a general scheme. The proposed scheme has not previously been described in the literature, and consists of 4 main steps in tubule degeneration. During stages I - IX of the cycle these steps are: (1) the "spermatid sloughing" stage, (2) the "multinucleated body" stage, (3) the "Sertoli cell cytoplasm" stage, and (4) the "Sertoli cell sloughing" stage. During stages X - XII of the cycle in the mouse (stages X - XIV in the rat), the first 2 of the 4 degenerative steps differ and have been termed: (1) the "cellular sloughing" stage, and (2) the "spermatocyte ghost cell" stage. Degeneration of seminiferous tubules affected Sertoli cells in a definite manner: the Sertoli cell nuclei increased in number, frequently migrated away from the basement membrane and were often sloughed into the tubule lumen. These changes in the behaviour of Sertoli cells during tubular atrophy are discussed.
title: Factors affecting rural women's involvement in physical activity in Ghana
Creators: name: Quainoo, Alice
Publisher: name: Memorial University of Newfoundland
Year: 2021

description: A qualitative study approach was used to explore the factors affecting rural women’s involvement in physical activity in Ghana. Most of the prior research has been done in African urban areas thus, neglecting the rural areas. Purposive sampling and semi-structured interviews were used to gather data from nine women aged 40-60 years living in three rural areas in central region of Ghana. The interviews were conducted by phone, translated and transcribed, and then coded using the NVivo software package. The constant comparative method was used to analyze the data. The data presented eight enablers and five barriers to physical activity involvement for rural Ghanaian women. The study adds to the state of knowledge about rural women’s physical activity across the lifespan from childhood through middle age. Findings revealed that rural women get a fair amount of physical activity from their traditional occupation, household chores, and communal labour but they lack access to and participation in organized sports or physical activity. Finally, recommendations are suggested to remove barriers to women’s participation in organized physical activity and sports in rural settings.
Exceptional orthogonal polynomials and the Darboux transformation
Creators: name: Gomez-Ullate, David
name: Kamran, Niky
name: Milson, Robert
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 33C45, 33C47

description: We adapt the notion of the Darboux transformation to the context of polynomial Sturm-Liouville problems. As an application, we characterize the recently described $X_m$ Laguerre polynomials in terms of an isospectral Darboux transformation. We also show that the shape-invariance of these new polynomial families is a direct consequence of the permutability property of the Darboux-Crum transformation.
description: corrected abstract, added references, minor corrections
Obscuring and feeding supermassive black holes with evolving nuclear star clusters
Creators: name: Schartmann, M.
name: Burkert, A.
name: Krause, M.
name: Camenzind, M.
name: Meisenheimer, K.
name: Davies, R. I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recently, high resolution observations with the help of the near-infrared adaptive optics integral field spectrograph SINFONI at the VLT proved the existence of massive and young nuclear star clusters in the centres of a sample of Seyfert galaxies. With the help of high resolution hydrodynamical simulations with the PLUTO-code, we follow the evolution of such clusters, especially focusing on mass and energy feedback from young stars. This leads to a filamentary inflow of gas on large scales (tens of parsec), whereas a turbulent and very dense disc builds up on the parsec scale. Here, we concentrate on the long-term evolution of the nuclear disc in NGC 1068 with the help of an effective viscous disc model, using the mass input from the large scale simulations and accounting for star formation in the disc. This two-stage modelling enables us to connect the tens of parsec scale region (observable with SINFONI) with the parsec scale environment (MIDI observations). At the current age of the nuclear star cluster, our simulations predict disc sizes of the order of 0.8 to 0.9 pc, gas masses of 1.0e6 Msun and mass transfer rates through the inner boundary of 0.025 Msun/yr in good agreement with values derived from observations.
description: 6 pages, 3 figures, to appear in the proceedings of the IAU General Assembly 2009, Rio de Janeiro, S267 Co-evolution of Central Black Holes and Galaxies
Additional file 1 of A comparison of three organisational levels in one health care region in Sweden implementing person-centred care: coupled, decoupled or recoupled in a complex organisation
Creators: name: Tistad, Malin
name: Wallin, Lars
name: Carlström, Eric
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Interview guide.
Fast tuning of superconducting microwave cavities
Creators: name: Sandberg, M.
name: Wilson, C. M.
name: Persson, F.
name: Johansson, G.
name: Shumeiko, V.
name: Bauch, T.
name: Duty, T.
name: Delsing, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Photons are fundamental excitations of the electromagnetic field and can be captured in cavities. For a given cavity with a certain size, the fundamental mode has a fixed frequency {\it f} which gives the photons a specific "color". The cavity also has a typical lifetime $τ$, which results in a finite linewidth $δ${\it f}. If the size of the cavity is changed fast compared to $τ$, and so that the frequency change $Δ${\it f} $\gg δ${\it f}, then it is possible to change the "color" of the captured photons. Here we demonstrate superconducting microwave cavities, with tunable effective lengths. The tuning is obtained by varying a Josephson inductance at one end of the cavity. We show data on four different samples and demonstrate tuning by several hundred linewidths in a time $Δt \ll τ$. Working in the few photon limit, we show that photons stored in the cavity at one frequency will leak out from the cavity with the new frequency after the detuning. The characteristics of the measured devices make them suitable for different applications such as dynamic coupling of qubits and parametric amplification.
description: 2nd International Workshop on Solid-State Quantum Computing, June 2008, Taipei, Taiwan
Quantum Phases of a Vortex String
Creators: name: Auzzi, Roberto
name: Kumar, S. Prem
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We argue that the world-sheet dynamics of magnetic k-strings in the Higgs phase of the mass-deformed N=4 theory, is controlled by a bosonic O(3) sigma model with anisotropy and a topological theta term. The theory interpolates between a massless O(2) symmetric regime, a massive O(3) symmetric phase and another massive phase with a spontaneously broken Z_2 symmetry. The first two phases are separated by a Kosterlitz-Thouless transition. When θ= πthe O(3) symmetric phase flows to an interacting fixed point; sigma model kinks and their dyonic partners become degenerate, mirroring the behaviour of monopoles in the parent gauge theory. This leads to the identification of the kinks with monopoles confined on the string.
description: Minor changes; version to appear in Phys. Rev. Lett
A Smoking Gun in the Carina Nebula
Creators: name: Hamaguchi, Kenji
name: Corcoran, Michael F.
name: Ezoe, Yuichiro
name: Townsley, Leisa
name: Broos, Patrick
name: Gruendl, Robert
name: Vaidya, Kaushar
name: White, Stephen M.
name: Strohmayer, Tod
name: Petre, Rob
name: Chu, You-Hua
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Carina Nebula is one of the youngest, most active sites of massive star formation in our Galaxy. In this nebula, we have discovered a bright X-ray source that has persisted for ~30 years. The soft X-ray spectrum, consistent with kT ~128 eV blackbody radiation with mild extinction, and no counterpart in the near- and mid-infrared wavelengths indicate that it is a ~1e6-year-old neutron star housed in the Carina Nebula. Current star formation theory does not suggest that the progenitor of the neutron star and massive stars in the Carina Nebula, in particular Eta Carinae, are coeval. This result suggests that the Carina Nebula experienced at least two major episodes of massive star formation. The neutron star may be responsible for remnants of high energy activity seen in multiple wavelengths.
description: 9 pages, 3 figures, accepted for publication to ApJL
Ground-based detection of thermal emission from the exoplanet WASP-19b
Creators: name: Gibson, N. P.
name: Aigrain, S.
name: Pollacco, D. L.
name: Barros, S. C. C.
name: Hebb, L.
name: Hrudková, M.
name: Simpson, E. K.
name: Skillen, I.
name: West, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present an occultation of the newly discovered hot Jupiter system WASP-19, observed with the HAWK-I instrument on the VLT, in order to measure thermal emission from the planet's dayside at ~2 um. The light curve was analysed using a Markov-Chain Monte-Carlo method to find the eclipse depth and the central transit time. The transit depth was found to be 0.366+-0.072 %, corresponding to a brightness temperature of 2540+-180 K. This is significantly higher than the calculated (zero-albedo) equilibrium temperature, and indicates that the planet shows poor redistribution of heat to the night side, consistent with models of highly irradiated planets. Further observations are needed to confirm the existence of a temperature inversion, and possibly molecular emission lines. The central eclipse time was found to be consistent with a circular orbit.
description: 4 Figures, 1 Table, letter, accepted in MNRAS
Automorphic properties of (2, 0) theory on T6
Creators: name: Henningson, Mans
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider ADE-type (2, 0) theory on a family of flat six-tori endowed with flat Sp(4) connections coupled to the R-symmetry. Our main objects of interest are the components of the `partition vector' of the theory. These constitute an element of a certain finite dimensional vector space, carrying an irreducible representation of a discrete Heisenberg group related to the 't Hooft fluxes of the theory. Covariance under the SL_6(Z) mapping class group of a six-torus amounts to a certain automorphic transformation law for the partition vector, which we derive. Because of the absence of a Lagrangian formulation of (2, 0) theory, this transformation property is not manifest, and gives useful non-trivial constraints on the partition vector. As an application, we derive a shifted quantization law for the spatial momentum of (2, 0) theory on a space-time of the form R x T5. This quantization law is in agreement with an earlier result based on the relationship between (2, 0) theory and maximally supersymmetric Yang-Mills theory together with certain geometric facts about gauge bundles.
description: 15 pages
Predictors, Outcomes and Prevention of Stroke after Transcatheter Aortic Valve Replacement
Creators: name: Zeenat Qureshi Stroke Institutes
Publisher: name: Zenodo
Year: 2021

description: Background— Every year more than 60,000 valve replacements are performed, and aortic valve replacementis the most common intracardiac procedure performed in the United States. Stroke is one of the most concerningcomplication of aortic valve replacement associated with increased mortality.Methods— We performed a narrative literature review, enhanced by hand-search of the reference lists of includedarticles and relevant reviews.Results— Intraprocedural embolic events are most common etiology for ischemic stroke associated with bothsurgical aortic valve replacement and transcatheter aortic valve replacement. Acute and subacute strokes after tran-scatheter aortic valve replacement have been reported in 3% to 9% of patients, with majority of them occurring withinfirst month. Post-procedural stroke is associated with increased mortality after both surgical and transcatheter aorticvalve replacement. Predictors of stroke include female gender, diabetes mellitus, calcification of ascending aorta,left ventricular ejection fraction <40%, acute kidney injury, peripheral vascular disease, previous stroke, walking <300 meters during 6-minute walk test, concurrent carotid stenosis, and emergency department admission. Transfem-oral transcatheter aortic valve replacement is the preferred approach and nonfemoral access is only used in 6% to10% of patients in the United States. Transapical access seems to have rates of stroke comparable with transfemoralapproach. On contrary, studies reporting subclavian/transaxillary access have yield contradictory results regardingstroke risk. The use of cerebral protection devices, such as Food and Drug Administration approved Sentinel deviceduring transcatheter aortic valve replacement, may be associated with a lower rate of stroke at 30-days.Conclusions— The rate and predictors of ischemic stroke associated with both surgical and transcatheter aorticvalve replacement need to be recognized. The use of cerebral protection devices during transcatheter aortic valvereplacement maybe associated with a lower 30-day stroke rate with transcatheter aortic valve replacement procedures.Keywords— Transcatheter aortic valve replacement, surgical aortic valve replacement, stroke, cerebrovascularevent, cerebral protection devices, mortality.
Saprolegnia diclina Humphrey as a parasite of the solmonid, Oncorhynchus kisutch.
Creators: name: McKay, Diana Louise
Publisher: name: University of British Columbia
Year: 2011

description: Studies of Saprolegnia infections of fish in British Columbia were made to determine disease causing agents and infection conditions. Saprolegnia diclina Humphrey was the most frequently observed parasite. This fungus reproduced sexually both on fish tissue and hemp seed cultures. No definite isolations of S. parasitica Coker were made although some non-sexually reproducing isolates of a Saprolegnia sp. were found. The validity of the species, S. parasitica, has been examined and questioned on the basis of present identification characteristics. Infection studies using S. diclina as the parasite and fingerling coho (Oncorhynchus kisutch) as the host indicated a distinct correlation between temperature and infection. At normal cool temperatures, e.g., 8° C, no infection occurred; at 9°C or above, some infection resulted. Above 9° C, the rate of infection increased as temperature increased. Temperature was also associated with the time at which infection occurred after inoculation. At 18°C, infection began earlier than at 13 C, Heat-shock treatment tended to reduce the temperature-time effect causing initial infection at 13°and at 18° C to occur almost simultaneously. Cold-shock treatment resulted in some infection. Such treatment, however, did not produce the same immediate infection as heat-shock. Histological studies demonstrated the infection to be concentrated in the host epidermis with fungal hyphae at sites of heaviest infection extending through the dermis and into underlying muscle tissues.
Understanding Terrorist Organizations with a Dynamic Model
Creators: name: Gutfraind, Alexander
Publisher: name: arXiv
Year: 2008
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34A30; 91F10; 93A30

description: Terrorist organizations change over time because of processes such as recruitment and training as well as counter-terrorism (CT) measures, but the effects of these processes are typically studied qualitatively and in separation from each other. Seeking a more quantitative and integrated understanding, we constructed a simple dynamic model where equations describe how these processes change an organization's membership. Analysis of the model yields a number of intuitive as well as novel findings. Most importantly it becomes possible to predict whether counter-terrorism measures would be sufficient to defeat the organization. Furthermore, we can prove in general that an organization would collapse if its strength and its pool of foot soldiers decline simultaneously. In contrast, a simultaneous decline in its strength and its pool of leaders is often insufficient and short-termed. These results and other like them demonstrate the great potential of dynamic models for informing terrorism scholarship and counter-terrorism policy making.
description: To appear as Springer Lecture Notes in Computer Science v2: vectorized 4 figures, fixed two typos, more detailed bibliography
Neutrino self-energy in external magnetic field
Creators: name: Erdas, Andrea
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the exact propagators in a constant magnetic field, the neutrino self-energy has been calculated to all orders in the field strength B within the minimal extension of the Weinberg-Salam model with massive Dirac neutrinos. A simple and very accurate formula for the self-energy is obtained, that is valid for 0 < B << m^2_W/e and for and for neutrino transverse momentum to the magnetic field p_{\perp} << m_W. I discuss the implications of this finding to the dispersion of massless neutrinos in vacuum and in a charge-symmetric medium, and to the magnetic field induced resonance transitions of massive neutrinos inside supernovae and magnetars, and calculate the neutrino magnetic moment.
description: REVTEX 4, 15 pages with one figure
Nanoparticle characterization by using Tilted Laser Microscopy: back scattering measurement in near field
Creators: name: Brogioli, D.
name: Salerno, D.
name: Cassina, V.
name: Mantegazza, F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: By using scattering in near field techniques, a microscope can be easily turned into a device measuring static and dynamic light scattering, very useful for the characterization of nanoparticle dispersions. Up to now, microscopy based techniques have been limited to forward scattering, up to a maximum of 30 degrees. In this paper we present a novel optical scheme that overcomes this limitation, extending the detection range to angles larger than 90 degrees (back-scattering). Our optical scheme is based on a microscope, a wide numerical aperture objective, and a laser illumination, with the collimated beam positioned at a large angle with respect to the optical axis of the objective (Tilted Laser Microscopy, TLM). We present here an extension of the theory for near field scattering, which usually applies only to paraxial scattering, to our strongly out-of-axis s ituation. We tested our instrument and our calculations with calibrated spherical nanoparticles of several different diameters, performing static and dynamic scattering measurements up to 110 degrees. The measured static spectra and decay times are compatible with the Mie theory and the diffusion coefficients provided by the Stokes-Einstein equation. The ability of performing backscattering measurements with this modified microscope opens the way to new applications of scattering in near field techniques to the measurement of systems with strongly angle dependent scattering.
description: 18 pages, 10 figures. Accepted for publication in Optics Express, vol. 17, no. 17 (08/17/2009)
Note About Hamiltonian Formalism of Modified $F(R)$ Hořava-Lifshitz Gravities and Their Healthy Extension
Creators: name: Kluson, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This note is devoted to the study of Hamiltonian formalism of modified F(R) Horava-Lifshitz theories of gravity that were proposed recently in arXiv:1001.4102[hep-th]. We also study Hamiltonian formulation of the healthy extended Horava-Lifshitz gravities and show that these theories have many unusual and interesting properties.
description: 9 pages, conclusions considering healthy extended version changed, references added
Electron-electron scattering effect on spin relaxation in multi-valley nanostructures
Creators: name: Glazov, M. M.
name: Ivchenko, E. L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We develop a theory of effects of electron-electron collisions on the Dyakonov-Perel' spin relaxation in multi-valley quantum wells. It is shown that the electron-electron scattering rate which governs the spin relaxation is different from that in a single-valley system. The theory is applied to Si/SiGe (001)-grown quantum wells where two valleys are simultaneously populated by free carriers. The dependences of the spin relaxation rate on temperature, electron concentration and valley-orbit splitting are calculated and discussed. We demonstrate that in a wide range of temperatures the electron-electron collisions can govern spin relaxation in high-quality Si/SiGe quantum wells.
description: 6 pages, 4 figures, EPL style, revised version
Aligned dipolar Bose-Einstein condensate in a double-well potential: From cigar-shaped to pancake-shaped
Creators: name: Asad-uz-Zaman, M.
name: Blume, D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider a Bose-Einstein condensate (BEC), which is characterized by long-range and anisotropic dipole-dipole interactions and vanishing s-wave scattering length, in a double-well potential. The properties of this system are investigated as functions of the height of the barrier that splits the harmonic trap into two halves, the number of particles (or dipole-dipole strength) and the aspect ratio $λ$, which is defined as the ratio between the axial and longitudinal trapping frequencies $ω_z$ and $ω_ρ$. The phase diagram is determined by analyzing the stationary mean-field solutions. Three distinct regions are found: a region where the energetically lowest lying stationary solution is symmetric, a region where the energetically lowest lying stationary solution is located asymmetrically in one of the wells, and a region where the system is mechanically unstable. For sufficiently large aspect ratio $λ$ and sufficiently high barrier height, the system consists of two connected quasi-two-dimensional sheets with density profiles whose maxima are located either at $ρ=0$ or away from $ρ=0$. The stability of the stationary solutions is investigated by analyzing the Bogoliubov de Gennes excitation spectrum and the dynamical response to small perturbations. These studies reveal unique oscillation frequencies and distinct collapse mechanisms. The results derived within the mean-field framework are complemented by an analysis based on a two-mode model.
description: 21 pages, 16 figures
PrEP-Evaluation EvE-PrEP – Ergebnisse einer Befragung zum PrEP-Versorgungsgeschehen in HIV-Schwerpunktzentren des dagnä-Netzwerks
Creators: name: Koch-Institut, Robert
name: Schmidt, Daniel
name: Schikowski, Tim
name: Friebe, Martin
name: Kollan, Christian
name: Bartmeyer, Barbara
name: Bremer, Viviane
name: Hanhoff, Nikola
name: Rüsenberg, Robin
name: Schewe, Knud
Publisher: name: Robert Koch-Institut
Year: 2021
Subjects: subject: HIV
subject: Präexpositionsprophylaxe
subject: HIV-PrEP
subject: STI
subject: Evaluation
subject: 610 Medizin und Gesundheit

description: Seit September 2019 ist die Präexpositionsprophylaxe (PrEP) bei HIV-Infektion Teil des Leistungskatalo-ges der gesetzlichen Krankenversicherung (GKV). Mit der Einführung wurde auch eine Evaluation der neuen Leistung vorgesehen und ge¬setzlich festgeschrieben. In einer ersten umfassenden Auswertung einer Befragung zum Versorgungsgeschehen mit der GKV-PrEP in deutschen HIV-Schwerpunktzentren wurden u. a. allgemeine Daten zur PrEP-Versorgung und PrEP-Nutzung sowie spezifische Daten zu Versorgungsprozessen, etwa Testung und Behandlung asymptomatischer STI sowie STI-Prophylaxe, Beratung und Einleitung der HIV-PrEP betrachtet. Ergänzt wurde die Untersuchung durch vorangegangene Umfragen zum Einfluss der COVID-19-Pandemie auf die PrEP-Versorgung.
Borel summability of $ϕ^{4}_{4}$ planar theory via multiscale analysis
Creators: name: Porta, Marcello
name: Simonella, Sergio
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the issue of Borel summability in the framework of multiscale analysis and renormalization group, by discussing a proof of Borel summability of the $ϕ^{4}_4$ massive euclidean planar theory; this result is not new, since it was obtained by Rivasseau and 't Hooft. However, the techniques that we use have already been proved effective in the analysis of various models of consended matter and field theory; therefore, we take the $ϕ^{4}_4$ planar theory as a toy model for future applications.
description: 30 pages, 8 figures. Notations revised, and other minor changes
Additional file 2 of Hypofractionated radiation leads to more rapid bleeding cessation in women with vaginal bleeding secondary to gynecologic malignancy
Creators: name: Moradi, Luke A.
name: Schneider, Craig S.
name: Deshane, Alok S.
name: Popple, Richard A.
name: Kim, Robert Y.
name: Marcrom, Samuel R.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology

description: Additional file 2. Supplemental Tables: Supplemental Table 1. Hemoglobin and platelet levels before and after completion of radiation. Values reported are the arithmetic mean. P-values were calculated by Mann-Whitney test. Supplemental Table 2 Acute toxicities reported by RT type received. Grade 2+ toxicities per CTCAE criteria are reported. P-values were determined via Fisher’s exact test.
The Tension Trials - A Defence Lawyer's Perspective of Post Conflict Intervention in Solomon Islands
Creators: name: Averre, Kenneth Hall
Publisher: name: Canberra, ACT: Coral Bell School of Asia Pacific Affairs, College of Asia and the Pacific, The Australian National University
Year: 2008

description: There has been much debate as to the name to be given to the conflict which Solomon Islands endured in recent years and which the Regional Assistance Missions to Solomon Islands came to put an end to. The tension seemed as good a word as any to the ordinary Solomon Islander and much as the phrase "the troubles" is used to define the violence and bloodshed which besieged Northern Ireland for decades then the phrase "the tension" is what the Solomons appears to be stuck with. It is now over five years since the arrival of the Regional Assistance Mission to Solomon Islands and whilst there are any number of papers available as to the success or otherwise of the mission there is a dearth of any statistical analysis of the prosecution of offences following the intervention.
Trust and understanding - the value of metadata in a digitally joined-up world - Seminar at DANS (28 september 2021)
Creators: name: Van der Eycken, Johan MM
name: Arnold, Kerstin
name: Illmayer, Klaus
Publisher: name: Zenodo
Year: 2021
Subjects: Archives
Metadata
Records in Context (RiC)
Standardisation
Archives Portal Europe
Parthenos-project

description: The Working Group on “Sustainable Publishing of Metadata” has been active within the Digital Research Infrastructure for the Arts and Humanities (DARIAH) European network since 2016. The working group aims to present and share information regarding ongoing and established projects which deal with the creation, reproduction and sharing of metadata between institutes and researchers within the field of Humanities and Social Sciences. This presentation is a follow-up to the presentation Cracking digital archival research and metadata: Archives Portal Europe (https://metadata.hypotheses.org/53) held during the DARIAH EU meeting in November 2020. This presentation was prepared as part of a Seminar in DANS | Centre of expertise & repository for research data (knaw.nl) on 28 September 2021 and deals with the possibility of synergies between different European infrastructures and European projects, with as concrete case the Parthenos project (PARTHENOS Project – Pooling Activities, Resources and Tools for Heritage E-research Networking, Optimization and Synergies (parthenos-project.eu), Archives Portal Europe (HOME - Archives Portal Europe) and the possibilities of the new archival standard Records in Context (Records in Contexts - Conceptual Model | International Council on Archives (ica.org).
Probing the evolution of molecular cloud structure: From quiescence to birth
Creators: name: Kainulainen, J.
name: Beuther, H.
name: Henning, T.
name: Plume, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Aims: We derive the probability density functions (PDFs) of column density for a complete sample of prominent molecular cloud complexes closer than 200 pc. Methods: We derive near-infrared dust extinction maps for 23 molecular cloud complexes, using the "nicest" colour excess mapping technique and data from the 2MASS archive. The extinction maps are then used to examine the column density PDFs in the clouds. Results: The column density PDFs of most molecular clouds are well-fitted by log-normal functions at low column densities (0.5 mag < A_v < 3-5 mag). However, at higher column densities prominent, power-law-like wings are common. In particular, we identify a trend among the PDFs: active star-forming clouds always have prominent non-log-normal wings. In contrast, clouds without active star formation resemble log-normals over the whole observed column density range, or show only low excess of higher column densities. This trend is also reflected in the cumulative PDFs, showing that the fraction of high column density material is significantly larger in star-forming clouds. These observations are in agreement with an evolutionary trend where turbulent motions are the main cloud-shaping mechanism for quiescent clouds, but the density enhancements induced by them quickly become dominated by gravity (and other mechanisms) which is strongly reflected by the shape of the column density PDFs. The dominant role of the turbulence is restricted to the very early stages of molecular cloud evolution, comparable to the onset of active star formation in the clouds.
description: 7 pages, 11 figures, accepted to A&A Letters
Electronic scanning technique for continuous tracking of human eyeball movements
Creators: name: Peal, Kenneth Richard
Publisher: name: University of British Columbia
Year: 2011

description: The design of a system for studying human eyeball movements is presented. The system output provides eyeball location and pupil size in the form of step-wise voltages which are up-dated a minimum of 4000 times per second. Eye movements up to ± 45 degrees in two dimensions can be tracked. The frequency response of the system ensures continuous tracking of all eye movements including the fastest saccades. The method employed is a photoelectric scan which uses feedback to lock onto the pupil and follow its movements. In the final system, this is performed by a scanning photo-multiplier tube which electronically dissects an optical image of the eye. To check the feasibility of the proposed system before the scanning photomultiplier is purchased, the work is performed in two parts: first the circuitry required to perform the scan is developed and tested without the use of a scanning photomultiplier tube; then an experiment is performed which simulates the scanning photomultiplier and enables the over-all system performance to be evaluated. In the first part, a system is constructed which performs similarly to the final system except that the electronic dissection of the image is performed using an oscilloscope in conjunction with a simple photomultiplier instead of the scanning photomultiplier. This "flying-spot system" is used to test the circuitry required to perform the scan: the circuitry proves to be entirely, satisfactory. In the second part, the simulation enables the signal noise ratio of the scanning photomultiplier to be predicted. On the basis of this, a recommendation is made to purchase the scanning photomultiplier and to construct the complete system.
Additional file 1 of Hyaluronidase-1-mediated glycocalyx impairment underlies endothelial abnormalities in polypoidal choroidal vasculopathy
Creators: name: Wu, Kan Xing
name: Yeo, Natalie Jia Ying
name: Ng, Chun Yi
name: Chioh, Florence Wen Jing
name: Fan, Qiao
name: Tian, Xianfeng
name: Yang, Binxia
name: Narayanan, Gunaseelan
name: Tay, Hui Min
name: Hou, Han Wei
name: Dunn, N. Ray
name: Su, Xinyi
name: Cheung, Chui Ming Gemmy
name: Cheung, Christine
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer

description: Additional file 1: Figure S1. Extrinsic mediators influence sprouting angiogenesis of BOECs. Figure S2. scRNA-seq data quality checks and cluster marker enrichments. Figure S3. Differential expression in PCV and normal BOECs after heterogeneous flow. Figure S4. Differential expression in PCV and normal BOECs after heterogeneous flow. Table S1. Demographics details of PCV patients and normal individuals. Table S2. HYAL1 validation in clinical samples. Table S3. Key resources used in this study.
Non-Hermitian Adiabatic Quantum Optimization
Creators: name: Berman, Gennady P.
name: Nesterov, Alexander I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a novel non-Hermitian adiabatic quantum optimization algorithm. One of the new ideas is to use a non-Hermitian auxiliary "initial'' Hamiltonian that provides an effective level repulsion for the main Hamiltonian. This effect enables us to develop an adiabatic theory which determines ground state much more efficiently than Hermitian methods.
description: Minor corrections, 1 figure, 9 pages
Spectroscopic Diagnostics of Polar Coronal Plumes
Creators: name: Wilhelm, K.
name: Dwivedi, B. N.
name: Curdt, W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Polar coronal plumes seen during solar eclipses can now be studied with space-borne telescopes and spectrometers. We briefly discuss such observations from space with a view to understanding their plasma characteristics. Using these observations, especially from SUMER/SOHO, but also from EUVI/STEREO, we deduce densities, temperatures, and abundance anomalies in plumes and inter-plume regions, and discuss their implications for better understanding of these structures in the Sun's atmosphere.
description: 5 pages, 3 figures; To appear in "Magnetic Coupling between the Interior and the Atmosphere of the Sun", eds. S.S. Hasan and R.J. Rutten, Astrophysics and Space Science Proceedings, Springer-Verlag, Heidelberg, Berlin, 2009
Water vapor and the dynamics of climate changes
Creators: name: Schneider, Tapio
name: O'Gorman, Paul A.
name: Levine, Xavier
Publisher: name: arXiv
Year: 2009
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Water vapor is not only Earth's dominant greenhouse gas. Through the release of latent heat when it condenses, it also plays an active role in dynamic processes that shape the global circulation of the atmosphere and thus climate. Here we present an overview of how latent heat release affects atmosphere dynamics in a broad range of climates, ranging from extremely cold to extremely warm. Contrary to widely held beliefs, atmospheric circulation statistics can change non-monotonically with global-mean surface temperature, in part because of dynamic effects of water vapor. For example, the strengths of the tropical Hadley circulation and of zonally asymmetric tropical circulations, as well as the kinetic energy of extratropical baroclinic eddies, can be lower than they presently are both in much warmer climates and in much colder climates. We discuss how latent heat release is implicated in such circulation changes, particularly through its effect on the atmospheric static stability, and we illustrate the circulation changes through simulations with an idealized general circulation model. This allows us to explore a continuum of climates, constrain macroscopic laws governing this climatic continuum, and place past and possible future climate changes in a broader context.
description: 22 pages, 11 figures
Additional file 1 of Association between the presence of delirium during intensive care unit admission and cognitive impairment or psychiatric problems: the Korean ICU National Data Study
Creators: name: Ko, Ryoung-Eun
name: Kang, Danbee
name: Park, Hyejung
name: Cho, Juhee
name: Suh, Gee Young
name: Chung, Chi Ryang
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Hematology

description: Additional file 1: Table S1. Cause of admission. Table S2. Hazard ratio (95% CI) for cognitive impairment or psychiatric problems within 2 years of discharge in patients with delirium versus patients without delirium using a conservative definition of delirium. Table S3. Hazard ratio (95% CI) for psychiatric problems within 2 years of discharge in patients with delirium versus patients without delirium
MPEC 2023-X300 : 2023 XZ13
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 XZ13

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Enhancing Tone Acquisition In Chinese Language LearningThrough Information And Communication Technology (ICT)
Creators: name: kumar, vikash
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 470303
subject: Chinese languages
classificationCode: 470515
subject: Literature in Chinese

description: This paper explores the integration of Information and Communication Technology(ICT) in the teaching of tones in the Chinese language. Tones play a pivotal role in MandarinChinese, posing a significant challenge for non-native learners. Leveraging ICT tools andstrategies, this paper discusses innovative approaches to enhance tone acquisition, provideinteractive learning experiences, and address the complexities associated with mastering Chinesetones. This paper highlights the effectiveness of ICT in facilitating tone learning and offers insightsinto the future prospects of technology-driven language education.
Additional file 1 of Improving adherence to acute low back pain guideline recommendations with chiropractors and physiotherapists: the ALIGN cluster randomised controlled trial
Creators: name: French, Simon D.
name: O’Connor, Denise A.
name: Green, Sally E.
name: Page, Matthew J.
name: Mortimer, Duncan S.
name: Turner, Simon L.
name: Walker, Bruce F.
name: Keating, Jennifer L.
name: Grimshaw, Jeremy M.
name: Michie, Susan
name: Francis, Jill J.
name: McKenzie, Joanne E.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 1: Table 1. Deviations from trial protocol. Table 2. Labels used to describe outcomes across the trial report, protocol and registry entry. Table 3. Overview of ALIGN intervention components. Table 4. Baseline values for hypothesised predictors of clinician behaviour –all clinicians