cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Utility maximization in incomplete markets
Creators: name: Hu, Ying
name: Imkeller, Peter
name: Muller, Matthias
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Computational Finance (q-fin.CP)
subject: FOS: Mathematics
subject: FOS: Economics and business
subject: 60H10, 91B28 (Primary) 60G44, 91B70, 91B16, 60H20, 93E20. (Secondary)

description: We consider the problem of utility maximization for small traders on incomplete financial markets. As opposed to most of the papers dealing with this subject, the investors' trading strategies we allow underly constraints described by closed, but not necessarily convex, sets. The final wealths obtained by trading under these constraints are identified as stochastic processes which usually are supermartingales, and even martingales for particular strategies. These strategies are seen to be optimal, and the corresponding value functions determined simply by the initial values of the supermartingales. We separately treat the cases of exponential, power and logarithmic utility.
description: Published at http://dx.doi.org/10.1214/105051605000000188 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Supersymmetric minisuperspace models in self-dual loop quantum cosmology
Creators: name: Eder, Konstantin
name: Sahlmann, Hanno
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we study a class of symmetry reduced models of $\mathcal{N}=1$ supergravity using self-dual variables. It is based on a particular Ansatz for the gravitino field as proposed by D'Eath et al. We show that the essential part of the constraint algebra in the classical theory closes. In particular, the (graded) Poisson bracket between the left and right supersymmetry constraint reproduces the Hamiltonian constraint. For the quantum theory, we apply techniques from the manifestly supersymmetric approach to loop quantum supergravity, which yields a graded analog of the holonomy-flux algebra and a natural state space. We implement the remaining constraints in the quantum theory. For a certain subclass of these models, we show explicitly that the (graded) commutator of the supersymmetry constraints exactly reproduces the classical Poisson relations. In particular, the trace of the commutator of left and right supersymmetry constraints reproduces the Hamilton constraint operator. Finally, we consider the dynamics of the theory and compare it to a quantization using standard variables and standard minisuperspace techniques.
description: version identical with the one to be published in JHEP, 47 pages
Security and access of healthcare data – where do we stand?
Creators: name: Rajvanshi, Harsh
Publisher: name: F1000Research
Year: 2016

description: Identity thieves have expanded their target list to include not only financial records but medical information. Cyber criminals see medical records as particularly valuable as they include not only names and addresses, but also employer and bank account/credit card information. The aim of this poster is to  learn about healthcare data protection measures and to assess the Indian Scenario in the same. History has shown several breaches in the healthcare security leading to debilitating effects at both personal and organizational levels. The existing healthcare protection laws like HIPPA, DPA and HITECH are discussed and the security measures suggested by top IT firms like ORACLE and IBM are also taken into light to address the loopholes in security of healthcare data. Scenario in India is analysed and compared to the international standards of healthcare data protection and measures to address the irregularities are being discussed in this review.
An exploration of the lived experience of male Health Visitors: An interpretative phenomenological analysis.
Creators: name: Le Blond, Suzanne
Publisher: name: College of Health, Psychology and Social Care (University of Derby)
Year: 2023
Subjects: Male, Nurse, Health Visitor, IPA, Phenomenology, Gender Role Conflict, Novice to Expert, Career, Fathers, Qualitative

description: The government drive to increase the national health visitor (HV) numbers in 2011 (Department of Health (DH), 2011) encompassed targeting all entrants on the Nursing and Midwifery Council (NMC) register, from all disciplines and genders. There was a specific drive to recruit men, resulting in men coming forward for the first time to train locally as HVs. The catalyst for this study was a male HV student having a challenging time within the placement setting. This made me wonder what it must be like for the male HVs undertaking the HV programme of education and subsequently working in the community, both as a colleague, to the predominantly female workforce and as a professional, delivering a traditionally female service to the community population. 
The research design, following a constructivist methodology, was chosen to acquire the lived experience of the male HV through an interpretative phenomenological analysis (IPA) lens. Semi-structured interviews for data collection were conducted, verbatim transcription was completed and the six-phase approach to analysis, advocated by Smith, Flowers and Larkin (2009) was used to extrapolate findings.
The findings provided fourteen themes and four superordinate themes as follows: Gender as a factor in health visitor service delivery, The cultural marginalisation of fathers in England: health visitor service impact, Progressive career choice and Evolutionary health visitor practice and eclectic workloads. The discussion considers the theories of gender role conflict and novice to expert against the findings.
Conclusions drawn together, from the personal insightful narratives, demonstrate that male health visitors do have an impact on and are impacted by HV service delivery. Many of the participants entered the HV profession initially to find a better way of working but then embraced the role advocating for children, families and raising the profile of fathers.
This is an original contribution toward the development of knowledge as there are no other studies looking at the lived experience of male health visitors. This study can be seen as a benchmark toward future study around the subject matter.
Society's child
Creators: name: Collins, Simon
Publisher: name: University of British Columbia
Year: 2009

description: I want to challenge T. M. Skrtic's notions of Adhocracy as a viable organizational framework for Special Education in mainstream schools. I want to challenge Skrtic, not so much on the structural aspects of Adhocracy, but on the psychological, physical and emotional demands made of the teacher working in such a system. For while Skrtic's perspective regarding the organizational context of Special Education warrants credit for its perception and providence, it is my belief that Skrtic fails to address the human needs of teachers with the same clarity and brevity that he affords to understanding the needs of the children that are placed in their care. By focussing primarily on the design and implementation of what he considers to be the most effective structural configurations within schools to meet the needs of special education students, Skrtic's organizational paradigms may well create and perpetuate high levels of professional burnout and attrition as a consequence of reaching and maintaining his goal. In order to levitate Skrtic's ideology, and my experience, of Adhocracy, creating the potential for an initial point of equilibrium, I require a fulcrum, a pivot compiled of research made during my graduate studies, research that has focussed on the causes of stress, burnout and attrition associated with regular and special education teachers, I will make particular reference to the work of Brownell, Smith, McNellis & Lenk (1995) who provide tremendous insight into why people become 'stayers' - special education teachers with more than 5 years of classroom experience - or become 'leavers' - teachers who leave special education (Brownell et al, 1994-. 95, p. 87). It is my hope that by counter-weighing adhocracy, thereby giving credence to both its theoretical and practical existence, I hope to have exposed a paradox: that in striving to meet the needs of Special Education Children, Skrtic's application of Adhocracy as a viable organizational structure in regular schools is flawed because of its failure to identify and address the (individual) needs of those held directly responsible for its administration.
"Apparent PT-symmetric terahertz photoconductivity in the topological phase of Hg1−xCdxTe-based structures"
Creators: name: Galeeva, A. V.
name: Kazakov, A. S.
name: Artamkin, A. I.
name: Ryabova, L. I.
name: Dvoretsky, S. A.
name: Mikhailov, N. N.
name: Bannikov, M. I.
name: Danilov, Sergey N.
name: Khokhlov, D. R.
Publisher: name: Universität Regensburg
Year: 2020
Subjects: subject: 530 Physik

description: We show that the terahertz (THz) photoconductivity in the topological phase of Hg1-xCdxTe-based structures exhibits the apparent PT- (parity-time) symmetry whereas the P-symmetry and the T-symmetry, separately, are not conserved. Moreover, it is demonstrated that the P- and T-symmetry breaking may not be related to any type of the sample anisotropy. This result contradicts the apparent symmetry arguments and means that there exists an external factor that interacts with the sample electronic system and breaks the symmetry. We show that deviations from the ideal experimental geometry may not be such a factor.
Type Ia Supernovae: Simulations and Nucleosynthesis
Creators: name: Brown, E. F.
name: Calder, A. C.
name: Plewa, T.
name: Ricker, P. M.
name: Robinson, K.
name: Gallagher, J. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present our first nucleosynthesis results from a numerical simulation of the thermonuclear disruption of a static cold Chandrasekhar-mass C/O white dwarf. The two-dimensional simulation was performed with an adaptive-mesh Eulerian hydrodynamics code, FLASH, that uses as a flame capturing scheme the evolution of a passive scaler. To compute the isotopic yields and their velocity distribution, 10,000 massless tracer particles are embedded in the star. The particles are advected along streamlines and provide a Lagrangian description of the explosion. We briefly describe our verification tests and preliminary results from post-processing the particle trajectories with a modest (214 isotopes) reaction network.
description: Proceedings of Nuclei in the Cosmos 8, Nuc. Phys. A, in press
3D imaging from multipath temporal echoes
Creators: name: Turpin, Alex
name: Kapitany, Valentin
name: Radford, Jack
name: Rovelli, Davide
name: Mitchell, Kevin
name: Lyons, Ashley
name: Starshynov, Ilya
name: Faccio, Daniele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Applied Physics (physics.app-ph)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: Echo-location is a broad approach to imaging and sensing that includes both man-made RADAR, LIDAR, SONAR and also animal navigation. However, full 3D information based on echo-location requires some form of scanning of the scene in order to provide the spatial location of the echo origin-points. Without this spatial information, imaging objects in 3D is a very challenging task as the inverse retrieval problem is strongly ill-posed. Here, we show that the temporal information encoded in the return echoes that are reflected multiple times within a scene is sufficient to faithfully render an image in 3D. Numerical modelling and an information theoretic perspective prove the concept and provide insight into the role of the multipath information. We experimentally demonstrate the concept by using both radio-frequency and acoustic waves for imaging individuals moving in a closed environment.
description: Main document: 5 pages, 3 figures. Supplementary document: 8 pages, 7 figures. Supplementary videos can be accessed in the following link: https://www.youtube.com/playlist?list=PLqMUzW5Nvp3RhHK1O4k34NVIbfeAKiVbC
Coordinate Space HFB Calculations for the Zirconium Isotope Chain up to the Two-Neutron Dripline
Creators: name: Blazkiewicz, A.
name: Oberacker, V. E.
name: Umar, A. S.
name: Stoitsov, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We solve the Hartree-Fock-Bogoliubov (HFB) equations for deformed, axially symmetric even-even nuclei in coordinate space on a 2-D lattice utilizing the Basis-Spline expansion method. Results are presented for the neutron-rich zirconium isotopes up to the two-neutron dripline. In particular, we calculate binding energies, two-neutron separation energies, normal densities and pairing densities, mean square radii, quadrupole moments, and pairing gaps. Very large prolate quadrupole deformations (beta2=0.42,0.43,0.47) are found for the (102,104,112)Zr isotopes, in agreement with recent experimental data. We compare 2-D Basis-Spline lattice results with the results from a 2-D HFB code which uses a transformed harmonic oscillator basis.
description: 9 pages, 9 figures
Dynamics of Sprung Loads on Pavements
Creators: name: Havens, James H.
name: Hutcheson, D. F.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1962
Subjects: subject: Transportation Engineering

description: The attached report, "Dynamics of Sprung Loads on Pavements," resulted from a need for reliable impact factors for use in the structural design of pavements. For some years, it has been customary to use 1.2 times the static wheel load for designing portland cement concrete pavements. We, along with other investigators, have questioned this value, and have actually used higher values for some specific conditions. Impact factors for specific situations are listed on page 33 of the report. The three roads classed as smooth averaged 1.25, while the rough road gave a value of 1.35. Depressions at culverts and bridge approaches gave average values of 1.58 and 1.49 respectively. It appears that pavement design impact factors of 1.20 are too low and should be in the order of 1.33 to 1.50.
Dark Matter candidates in a Type-II radiative neutrino mass model
Creators: name: Lineros, Roberto A.
name: Pierre, Mathias
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We explore the connection between Dark Matter and neutrinos in a model inspired by radiative Type-II seessaw and scotogenic scenarios. In our model, we introduce new electroweakly charged states (scalars and a vector-like fermion) and impose a discrete $\mathbb{Z}_2$ symmetry. Neutrino masses are generated at the loop level and the lightest $\mathbb{Z}_2$-odd neutral particle is stable and it can play the role of a Dark Matter candidate. We perform a numerical analysis of the model showing that neutrino masses and flavour structure can be reproduced in addition to the correct dark matter density, with viable DM masses from 700 GeV to 30 TeV. We explore direct and indirect detection signatures and show interesting detection prospects by CTA, Darwin and KM3Net and highlight the complementarity between these observables.
description: 37 pages, 13 figures; mu to e gamma analysis added, matches the version published in JHEP
title: Comments on: AASHO Interim Guide for the Design of Rigid Pavement Structures
title: (AASHO Committee on Design, February, 1962)
titleType: Subtitle
Creators: name: Havens, James H.
name: Hughes, Ronald D.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1962
Subjects: subject: Transportation Engineering

description: We have reviewed the AASHO Interim Guide for the Design of Rigid Pavement Structures, and Messrs. Havens and Hughes of our staff have prepared comments on the guide. These comments do not deal entirely with the rigid pavement guide, but rather compare some of the design concepts from the Flexible Pavement Interim Guide.
Supplemental text and figures from Seasonal resource pulses and the foraging depth of a Southern Ocean top predator
Creators: name: Beltran, Roxanne S.
name: Kilpatrick, A. Marm
name: Breed, Greg A.
name: Adachi, Taiki
name: Takahashi, Akinori
name: Naito, Yasuhiko
name: Robinson, Patrick W.
name: Smith, Walker O.
name: Kirkham, Amy L.
name: Burns, Jennifer M.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: Seasonal resource pulses can have enormous impacts on species interactions. In marine ecosystems, air-breathing predators often drive their prey to deeper waters. However, it is unclear how ephemeral resource pulses such as near-surface phytoplankton blooms alter the vertical trade-off between predation avoidance and resource availability in consumers, and how these changes cascade to the diving behaviour of top predators. We integrated data on Weddell seal diving behaviour, diet stable isotopes, feeding success and mass gain to examine shifts in vertical foraging throughout ice break-out and the resulting phytoplankton bloom each year. We also tested hypotheses about the likely location of phytoplankton bloom origination (advected or produced in situ where seals foraged) based on sea ice break-out phenology and advection rates from several locations within 150 km of the seal colony. In early summer, seals foraged at deeper depths resulting in lower feeding rates and mass gain. As sea ice extent decreased throughout the summer, seals foraged at shallower depths and benefited from more efficient energy intake. Changes in diving depth were not due to seasonal shifts in seal diets or horizontal space use and instead may reflect a change in the vertical distribution of prey. Correspondence between the timing of seal shallowing and the resource pulse was variable from year to year and could not be readily explained by our existing understanding of the ocean and ice dynamics. Phytoplankton advection occurred faster than ice break-out, and seal dive shallowing occurred substantially earlier than local break-out. While there remains much to be learned about the marine ecosystem, it appears that an increase in prey abundance and accessibility via shallower distributions during the resource pulse could synchronize life-history phenology across trophic levels in this high-latitude ecosystem.
Palatini f(R) Cosmology
Creators: name: Lee, Seokcheon
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the modified gravity theories in terms of the effective dark energy models. We compare the cosmic expansion history and the linear growth in different models. We also study the evolution of linear cosmological perturbations in modified theories of gravity assuming the Palatini formalism. We find the stability of the superhorizon metric evolution depends on models. We also study the matter density fluctuation in the general gauge and show the differential equations in super and sub-horizon scales.
description: 10 pages, CosPA 2007 Proceeding will be published in the Mod. Phys. Lett. A
THE DESIGN AND COMPARATIVE ECONOMIC PERFORMANCE OF ALTERNATIVE SECOND-BEST POINT/NONPOINT TRADING MARKETS
Creators: name: Horan, Richard D.
name: Shortle, James S.
name: Abler, David G.
name: Ribaudo, Marc
name: Horan, Richard D.
name: Shortle, James S.
name: Abler, David G.
name: Ribaudo, Marc
Publisher: name: Unknown
Year: 2001
Subjects: Environmental Economics and Policy

description: There is considerable interest in the use of pollution trading between point and nonpoint sources to improve the cost-effectiveness of water pollution control, but little literature to guide the design of trading systems involving nonpoint sources. We explore the design of two types of trading systems that would allow trading among and between point and nonpoint sources.
Pavement Roughness Studies
Creators: name: Havens, James H.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1962
Subjects: subject: Transportation Engineering

description: During 1961, the equivalent of about 800 lane-miles of pavement were tested and analyzed. The largest portion of this mileage was on completed Interstate projects. In November, three pavements selected by the Bureau of Public Roads for serviceability-index ratings (6) were tested; and these are discussed briefly in this report.  Periodic surveillance of the roughness of all of the roads presently listed in Tables 1 and 2 is contemplated. New primary and Interstate construction will be included in the future. Thus, each respective project may be eventually characterized by a history of roughness measurements.
Levofloxacin
Creators: name: Millar, John
Publisher: name: Zenodo
Year: 2024

description: Levofloxacin is an antibiotic that belongs to the class of fluoroquinolone antibiotics. It is used to treat a range of bacterial infections, including respiratory tract infections, urinary tract infections, skin and soft tissue infections, and sexually transmitted infections. It works by inhibiting the bacterial DNA gyrase and topoisomerase IV enzymes, which are essential for the replication and transcription of bacterial DNA, thereby halting the growth and multiplication of bacteria. Levofloxacin is commonly prescribed in tablet or injection form, and is usually taken by mouth. Levofloxacin wholesale
Supplementary Material from "Non-local interactions in collective motion"
Creators: name: King, Arthur E. B. T.
name: Turner, Matthew S.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Biophysics
subject: 60114 Systems Biology
subject: FOS: Biological sciences
subject: 60199 Biochemistry and Cell Biology not elsewhere classified
subject: 69999 Biological Sciences not elsewhere classified
subject: 10299 Applied Mathematics not elsewhere classified
subject: FOS: Mathematics

description: Supplementary figures and table. Fig. S1. Order disorder transition. Figs. S2, S3, S4. Velocity correlation function for different numbers of agents. Fig. S5, S6. Velocity correlation function in ordered and disordered regime. Table S1. Crossover noise values.
Polarization enhancement in two- and three-component ferroelectric superlattices
Creators: name: Nakhmanson, Serge M.
name: Rabe, K. M.
name: Vanderbilt, David
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Composition-dependent structural and polar properties of epitaxial short-period CaTiO_3/SrTiO_3/BaTiO_3 superlattices grown on a SrTiO_3 substrate are investigated with first-principles density-functional theory computational techniques. Polarization enhancement with respect to bulk tetragonal BaTiO_3 is found for two- and three-component superlattices with a BaTiO_3 concentration of more than 30%. Individual BaTiO_3 layer thickness is identified as an important factor governing the polarization improvement. In addition, the degree of inversion-symmetry breaking in three-component superlattices can be controlled by varying the thicknesses of the component layers. The flexibility allowed within this large family of structures makes them highly suitable for various applications in modern nano-electro-mechanical devices.
description: The following article has been submitted to Applied Physics Letters. After it is published, it will be found at http://apl.aip.org/
Wigner negativity in the steady-state output of a Kerr parametric oscillator
Creators: name: Strandberg, Ingrid
name: Johansson, Göran
name: Quijandría, Fernando
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The output field from a continuously driven linear parametric oscillator may exhibit considerably more squeezing than the intracavity field. Inspired by this fact, we explore the nonclassical features of the steady-state output field of a driven nonlinear Kerr parametric oscillator using a temporal wave packet mode description. Utilizing a new numerical method, we have access to the density matrix of arbitrary wave packet modes. Remarkably, we find that even though the steady-state cavity field is always characterized by a positive Wigner function, the output may exhibit Wigner negativity, depending on the properties of the selected mode.
THE SPARTAN SCHOOL OF INSTITUTIONAL ECONOMICS AT MICHIGAN STATE UNIVERSITY
Creators: name: Schmid, A. Allan
name: Schmid, A. Allan
Publisher: name: Unknown
Year: 2002
Subjects: Institutional and Behavioral Economics

description: Heterodox scholarship at Michigan State University (MSU) was influenced by the institutional economics of John R. Commons at Wisconsin. But it was far from monolithic and had many other sources and originality of its own. A case can be made that the center of institutional economics moved across Lake Michigan from Madison to East Lansing and blossomed in the second half of the 20th century with such Wisconsin Ph.D's as Raleigh Barlowe, Warren Samuels, Allan Schmid, Harry Trebing, and others. Equally important in making MSU a center of institutional economics were scholars from other institutional backgrounds such as Paul Strassmann, economic development; Robert Solo, science and technology; James Shaffer, agricultural marketing and consumer behavior; Nicholas Mercuro, law and economics; and others.
Disorder effects on Majorana zero modes: Kitaev chain versus semiconductor nanowire
Creators: name: Pan, Haining
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Majorana zero modes in a superconductor-semiconductor nanowire have been extensively studied during the past decade. Disorder remains a serious problem, preventing the definitive observation of topological Majorana bound states. Thus, it is worthwhile to revisit the simple model, the Kitaev chain, and study the effects of weak and strong disorder on the Kitaev chain. By comparing the role of disorder in a Kitaev chain with that in a nanowire, we find that disorder affects both systems but in a nonuniversal manner. In general, disorder has a much stronger effect on the nanowire than the Kitaev chain, particularly for weak to intermediate disorder. For strong disorder, both the Kitaev chain and nanowire manifest random featureless behavior due to universal Anderson localization. Only the vanishing and strong disorder regimes are thus universal, manifesting respectively topological superconductivity and Anderson localization, but the experimentally relevant intermediate disorder regime is nonuniversal with the details dependent on the disorder realization in the system.
description: 15 pages, 11 figures
CONTRACT FINISHING FOR NEW ENTRANTS IN PORK PRODUCTION
Creators: name: Martin, Laura L.
name: Rozeboom, Dale
name: Schwab, Gerald
name: Martin, Laura L.
name: Rozeboom, Dale
name: Schwab, Gerald
Publisher: name: Unknown
Year: 1997
Subjects: Livestock Production/Industries

description: The pork production industry is a far different industry today than it was fifty, twenty, or even five years ago. On diversified Midwestern farms during the mid-to-late 20th century, the swine enterprise was labeled "the mortgage lifter". The hogs added value to home-produced feedstuffs such as corn and increased the income from a given acreage base. As farm mechanization and technology rapidly developed, farms became larger and less diversified as livestock disappeared from many farmsteads. In this paper, we address the question whether swine units can be introduced to non-livestock farms via a coordinated agreement for the grower-finisher phase and make these farms more profitable. To do this, we first describe some of the changes that have taken place in the pork industry. Second, production contracts and grower payments are introduced. Next, we move on to issues of manure management and the value of manure to non-livestock farms. Finally, in the Appendix, financial analyses for sample contract finishing contracts are laid out to help farmers determine if contract finishing could benefit their farming operations.
Quantum Two-State Dynamics Driven by Stationary Non-Markovian Discrete Noise: Exact Results
Creators: name: Goychuk, Igor
name: Hanggi, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the problem of stochastic averaging of a quantum two-state dynamics driven by non-Markovian, discrete noises of the continuous time random walk type (multistate renewal processes). The emphasis is put on the proper averaging over the stationary noise realizations corresponding, e.g., to a stationary environment. A two state non-Markovian process with an arbitrary non-exponential distribution of residence times (RTDs) in its states with a finite mean residence time provides a paradigm. For the case of a two-state quantum relaxation caused by such a classical stochastic field we obtain the explicit exact, analytical expression for the averaged Laplace-transformed relaxation dynamics. In the limit of Markovian noise (implying an exponential RTD), all previously known results are recovered. We exemplify new more general results for the case of non-Markovian noise with a biexponential RTD. The averaged, real-time relaxation dynamics is obtained in this case by numerically exact solving of a resulting algebraic polynomial problem. Moreover, the case of manifest non-Markovian noise with an infinite range of temporal autocorrelation (which in principle is not accessible to any kind of perturbative treatment) is studied, both analytically (asymptotic long-time dynamics) and numerically (by a precise numerical inversion of the Laplace-transformed averaged quantum relaxation).
description: Chemical Physics, in press
First Principles Calculations for Topological Quantum Materials
Creators: name: Xiao, Jiewen
name: Yan, Binghai
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Discoveries of topological states and topological materials reshape our understanding of physics and materials over the last 15 years. First-principles calculations have been playing a significant role in bridging the theory of topology and experiments by predicting realistic topological materials. In this article, we overview the first-principles methodology on topological quantum materials. First, we unify different concepts of topological states in the same band inversion scenario. Then, we discuss the topology using first-principles band structures and newly-established topological materials databases. We stress challenges in characterizing symmetry-independent Weyl semimetals and calculating topological surface states, closing with an outlook on the exciting transport and optical phenomena induced by the topology.
description: 26 pages, 7 figures
Visual representation of shoal cohesion from Behavioural plasticity in a native species may be related to foraging resilience in the presence of an aggressive invader
Creators: name: Keiller, Melinda L.
name: Lopez, Laura K.
name: Paijmans, Kai C.
name: Wong, Marian Y. L.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: Supplementary Figure 1a. A visual representation of how shoal cohesion was calculated. The test aquarium was subdivided into 4 equal sized sections (each measuring 15cm (L) × 30cm (W) × 30cm (H)). Shoal cohesion was calculated by counting the number of focal fish in each zone at 3 minute intervals (3 minute intervals for a 30 minute observation equals 10 zone counts). The standard deviation was taken from each time interval zone count. An average shoal standard deviation was then calculated from the 10 × time intervals zone counts, to produce one standard deviation per shoal. The average of the AM and PM observations were taken. This value was the categorised as either high or low (low <1; high >1). A high standard deviation indicated high cohesion amongst the shoal, whilst a low standard deviation indicated low cohesion. Figure 1b: Histogram showing the frequency distribution of mean dispersion values, indicating clear bimodal distribution.
Determination of inosine 5'-monophosphate dehydrogenase activity by high performance liquid chromatography in comparison with normalization methods
Creators: name: MT. Nguyen
name: NT. Tran
name: M. Vincent
name: A. Capron
name: M. Mourad
name: P. Wallemacq
Publisher: name: Faculty of Pharmacy, Mahidol University
Year: 2015
Subjects: inosine 5'-monophosphate dehydrogenase activity,mycophenolic acid,HPLC,peripheral blood mononuclear cells

description: 4, 42, Mahidol University Journal of Pharmaceutical Sciences
Robust and Ultrafast State Preparation by Ramping Artificial Gauge Potentials
Creators: name: Wang, Botao
name: Dong, Xiao-Yu
name: Ünal, F. Nur
name: Eckardt, André
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The implementation of static artificial magnetic fields in ultracold atomic systems has become a powerful tool, e.g. for simulating quantum-Hall physics with charge-neutral atoms. Taking an interacting bosonic flux ladder as a minimal model, we investigate protocols for adiabatic state preparation via magnetic flux ramps. Considering the fact that it is actually the artificial vector potential (in the form of Peierls phases) that can be experimentally engineered in optical lattices, rather than the magnetic field, we find that the time required for adiabatic state preparation dramatically depends on which pattern of Peierls phases is used. This can be understood intuitively by noting that different patterns of time-dependent Peierls phases that all give rise to the same magnetic field ramp, generally lead to different artificial electric fields during the ramp. Remarkably, we find that an optimal choice allows for preparing the ground state almost instantaneously. We relate this observation to shortcuts to adiabaticity via counterdiabatic driving. Our findings open new possibilities for robust state preparation in atomic quantum simulators.
description: Accepted in New Journal of Physics
Evaluating the Clinical Realism of Synthetic Chest X-Rays Generated Using Progressively Growing GANs
Creators: name: Segal, Bradley
name: Rubin, David M.
name: Rubin, Grace
name: Pantanowitz, Adam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Chest x-rays are a vital tool in the workup of many patients. Similar to most medical imaging modalities, they are profoundly multi-modal and are capable of visualising a variety of combinations of conditions. There is an ever pressing need for greater quantities of labelled data to develop new diagnostic tools, however this is in direct opposition to concerns regarding patient confidentiality which constrains access through permission requests and ethics approvals. Previous work has sought to address these concerns by creating class-specific GANs that synthesise images to augment training data. These approaches cannot be scaled as they introduce computational trade offs between model size and class number which places fixed limits on the quality that such generates can achieve. We address this concern by introducing latent class optimisation which enables efficient, multi-modal sampling from a GAN and with which we synthesise a large archive of labelled generates. We apply a PGGAN to the task of unsupervised x-ray synthesis and have radiologists evaluate the clinical realism of the resultant samples. We provide an in depth review of the properties of varying pathologies seen on generates as well as an overview of the extent of disease diversity captured by the model. We validate the application of the Fréchet Inception Distance (FID) to measure the quality of x-ray generates and find that they are similar to other high resolution tasks. We quantify x-ray clinical realism by asking radiologists to distinguish between real and fake scans and find that generates are more likely to be classed as real than by chance, but there is still progress required to achieve true realism. We confirm these findings by evaluating synthetic classification model performance on real scans. We conclude by discussing the limitations of PGGAN generates and how to achieve controllable, realistic generates.
description: 18 pages, 8 figures, 2 tables
The star formation history of damped Lyman alpha absorbers
Creators: name: Hopkins, A. M.
name: Rao, S. M.
name: Turnshek, D. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The local power law relationship between the surface densities of neutral hydrogen gas and star formation rate (SFR) can be used to explore the SFR properties of damped Lyman alpha (DLA) systems at higher redshift. We find that while the SFR densities for DLA systems are consistent with luminous star forming galaxies at redshifts below z~0.6, at higher redshifts their SFR density is too low for them to provide a significant contribution to the cosmic star formation history (SFH). This suggests that the majority of DLAs may be a distinct population from the Lyman break galaxies (LBGs) or submillimeter star-forming galaxies that together dominate the SFR density at high redshift. It is also possible that the DLAs do not trace the bulk of the neutral gas at high redshift. The metallicity properties of DLAs are consistent with this interpretation. The DLAs show a metal mass density lower by two orders of magnitude at all redshifts than that inferred from the SFH of the universe. These results are consistent with DLAs being dominated by low mass systems having low SFRs or a late onset of star formation, similar to the star formation histories of dwarf galaxies in the local universe.
description: 9 pages, 5 figures, accepted for publication in ApJ
The Role of Taxation in the Prevention and Treatment of Land Degradation
Creators: name: Peterson, Deborah C.
name: Peterson, Deborah C.
Publisher: name: Unknown
Year: 1995
Subjects: Land Economics/Use

description: Tax provisions for land care are often justified as corrections for externalities. It is argued in this paper that land care provisions can be justified independently of an externality correction objective, since land care provisions can be viewed as a partial correction of the failure of the depreciation provisions in the Income Tax Assessment Act 1936 to recognise that items other than plant and articles devalue through use. This argument only applies to depreciation over the effective life of the asset and not to the provision of accelerated depreciation. There may be a role for Pigouvian subsidies in the case of land degradation to address the externality problem, and some degree of accelerated depreciation may be viewed as an approximation of such. It is argued that direct subsidies may be preferred to either the current or redesigned income tax provisions.
Effect of hydrophobic nanoparticle cores on the characteristics of poly(?-caprolactone)-co-d-?-tocopheryl polyethylene glycol 1000 succinate nanoparticles loaded with camptothecin
Creators: name: Y. Sirithananchai
name: VB. Junyaprasert
name: K. Sakchaisri
name: J. Suksiriworapong
Publisher: name: Faculty of Pharmacy, Mahidol University
Year: 2015
Subjects: Camptothecin,Poly(?-caprolactone),d-?-Tocopheryl polyethylene glycol 1000 succinate,Nanoparticles,Hydrophobic

description: 4, 42, Mahidol University Journal of Pharmaceutical Sciences
Supplementary material from Microbial community composition interacts with local abiotic conditions to drive colonization resistance in human gut microbiome samples
Creators: name: Baumgartner, Michael
name: Pfrunder-Cardozo, Katia R.
name: Hall, Alex R.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology

description: Supplementary methods, figures and tables
Issues in Tax Design with Special Reference to Agriculture
Creators: name: Freebairn, John W.
name: Freebairn, John W.
Publisher: name: Unknown
Year: 1995
Subjects: Agricultural Finance
Public Economics

description: Taxation of agriculture has to be assessed in the context of the wider total economy system. A progressive income tax rate schedule is required to meet social goals of vertical equity. Efficiency properties of taxation of agriculture are difficult to assess because some capital income is taxed according to an expenditure base, some to a real income base and some to a nominal income base.
Dissecting a resonance wedge on heteroclinic bifurcations
Creators: name: Rodrigues, Alexandre A. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34C28, 34C37, 37D05, 37D45, 37G35

description: This article studies routes to chaos occurring within a resonance wedge for a 3-parametric family of differential equations acting on a 3-sphere. Our starting point is an autonomous vector field whose flow exhibits a weakly attracting heteroclinic network made by two 1-dimensional connections and a 2-dimensional separatrix between two equilibria with different Morse indices. After changing the parameters, while keeping the 1-dimensional connections unaltered, we concentrate our study in the case where the 2-dimensional invariant manifolds of the equilibria do not intersect. We derive the first return map near the ghost of the attractor and we reduce the analysis of the system to a 2-dimensional map on the cylinder. Complex dynamical features arise from a discrete-time Bogdanov-Takens singularity, which may be seen as the organizing center by which one can obtain infinitely many attracting tori, strange attractors, infinitely many sinks and non-trivial contracting wandering domains. These dynamical phenomena occur within a structure that we call resonance wedge. As an application, we may see the "classical" Arnold tongue as a projection of a resonance wedge. The results are general, extend to other contexts and lead to a fine-tuning of the theory.
description: 32 pages, 14 figures
Quantum Monte Carlo calculations of the structural properties and the B1-B2 phase transition of MgO
Creators: name: Alfè, D.
name: Alfredsson, M.
name: Brodholt, J.
name: Towler, M. J. Gillan M. D.
name: Needs, R. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report diffusion Monte Carlo (DMC) calculations on MgO in the rock-salt and CsCl structures. The calculations are based on Hartree-Fock pseudopotentials, with the single-particle orbitals entering the correlated wave function being represented by a systematically convergeable cubic-spline basis. Systematic tests are presented on system-size errors using periodically repeating cells of up to over 600 atoms. The equilibrium lattice parameter of the rock-salt structure obtained within DMC is almost identical to the Hartree-Fock result, which is close to the experimental value. The DMC result for the bulk modulus is also in good agreement with the experimental value. The B1-B2 transition pressure (between the rock-salt and CsCl structures) is predicted to be just below 600 GPa, which is beyond the experimentally accessible range, in accord with other predictions based on Hartree-Fock and density functional theories.
description: 12 pages, 6 figures
Prevalence and related factors for injectable vancomycin or teicoplanin-associated thrombocytopenia in a Vietnamese hospital
Creators: name: HT. Nguyen
name: T. Pham
name: HT. Bui
Publisher: name: Faculty of Pharmacy, Mahidol University
Year: 2015
Subjects: vancomycin injection,teicoplanin injection,thrombocytopenia

description: 4, 42, Mahidol University Journal of Pharmaceutical Sciences
Improving the Efficiency of Taxation of Livestock in Australia
Creators: name: Douglas, Robert A.
name: Douglas, Robert A.
Publisher: name: Unknown
Year: 1995
Subjects: Public Economics

description: In this paper, the neutrality of the income tax provisions for livestock are examined and compared with policies in selected other countries. It is argued that the current system provides significant concessions by deferring the recognition of income. The deferral of recognition of income distorts investment decisions by providing an incentive to invest in livestock which is not available for similar investments. A more efficient system, based in part on the New Zealand National Standard Cost Scheme is suggested, as are possible transition measures.
Equivalent and absolutely continuous measure changes for jump-diffusion processes
Creators: name: Cheridito, Patrick
name: Filipovic, Damir
name: Yor, Marc
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G30, 60J25, 60J75 (Primary)

description: We provide explicit sufficient conditions for absolute continuity and equivalence between the distributions of two jump-diffusion processes that can explode and be killed by a potential.
description: Published at http://dx.doi.org/10.1214/105051605000000197 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Migrar do DSpace 5 para DSpace 7 no Serviço de Alojamento de Repositórios Institucionais (SARI) do RCAAP
Creators: name: Lopes, Paulo
name: Graça, Paulo
name: Laranjeira, Cátia
name: Ribeiro, Fernando
name: Truta, Raquel
name: Saraiva, Ricardo
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada na sessão “O meu Póster em 1 minuto”, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
RAQAMLASHGAN MUHITDA BO'LAJAK MATEMATIKA O'QITUVCHILARINING AXBOROT KOMPETENSIYASINI RIVOJLANTIRISHNING MOHIYATI
Creators: name: Raxmonov, Bo'ron
name: O'ngboyeva, Muqaddas
name: Timurkulova, Ruxshona
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada raqamli muhitda bo‘lajak matematika o‘qituvchilarining axborot kompetensiyasini rivojlantirish ularning kasbiy tayyorgarligining muhim yo‘nalishi hisoblanadi. Oliy ta’lim tashkilotlarida ta’lim faoliyatini raqamli ta’lim faoliyatiga o‘tkazishga va yangi bilimlarni axborot texnologiyalari vositalaridan foydalangan holda, kompyuter va turli raqamli vositalardan foydalanishda talabalarning pedagogik mahoratini rivojlantirish haqida fikrlar yuritilgan.
High performance liquid chromatography method for implementation of therapeutic drug monitoring of Vancomycin at Hospital for Tropical Diseases - Ho Chi Minh City Vietnam
Creators: name: PV. Toi
name: NDK. Tho
name: PN. Phuong
name: HP. Thao
name: TT. Quynh
name: HTM. Thuy
name: DTH. Hanh
name: NVV. Chau
name: GE. Thwaites
name: TT. Hien
Publisher: name: Faculty of Pharmacy, Mahidol University
Year: 2015
Subjects: Vancomycin,Therapeutic Drug Monitoring (TDM),HPLC,SPE,FPIA

description: 4, 42, Mahidol University Journal of Pharmaceutical Sciences