cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Supplementary text and Figures for ‘Global drought trends and future projections’
Creators: name: Vicente-Serrano, Sergio M.
name: Peña-Angulo, Dhais
name: Beguería, Santiago
name: Domínguez-Castro, Fernando
name: Tomás-Burguera, Miquel
name: Noguera, Iván
name: Gimeno-Sotelo, Luis
name: El Kenawy, A.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: 40107 Meteorology
subject: FOS: Earth and related environmental sciences

description: Drought is one of the most difficult natural hazards to quantify and is divided into categories (meteorological, agricultural, ecological and hydrological), which makes assessing recent changes and future scenarios extremely difficult. This opinion piece includes a review of the recent scientific literature on the topic and analyses trends in meteorological droughts by using long-term precipitation records and different drought metrics to evaluate the role of global warming processes in trends of agricultural, hydrological and ecological drought severity over the last four decades, during which a sharp increase in atmospheric evaporative demand (AED) has been recorded. Meteorological droughts do not show any substantial changes at the global scale in at least the last 120 years, but an increase in the severity of agricultural and ecological droughts seems to emerge as a consequence of the increase in the severity of AED. Lastly, this study evaluates drought projections from earth system models and focuses on the most important aspects that need to be considered when evaluating drought processes in a changing climate, such as the use of different metrics and the uncertainty of modelling approaches.This article is part of the theme issue ‘Drought risk in the Anthropocene’.
Monetary Policy Challenges for Emerging Market Economies
Creators: name: Hammond, Gill
name: Kanbur, Ravi
name: Prasad, Eswar
name: Hammond, Gill
name: Kanbur, Ravi
name: Prasad, Eswar
Publisher: name: Unknown
Year: 2009
Subjects: subject: International Development
subject: International Relations/Trade
subject: Political Economy
subject: Public Economics
subject: Emerging Markets
subject: Monetary Policy
subject: Economies

description: This paper introduces a significant new collection of papers on monetary policy in emerging market economies, written by leading analysts and policy makers. Does existing economic theory provide lessons that are pertinent for designing effective monetary policy frameworks in emerging markets? What can be learned from cross-country studies and from experiences of individual countries that have adopted different approaches? While country-specific circumstances and initial conditions matter a great deal in formulating suitable frameworks, are there clear general principles that can serve as a guide in this process? These are among the issues addressed in the dialogue between academics and policy makers represented in this volume. In this paper, we provide an overview of the main issues, linking them to broader debates in the academic literature as well as an assessment of how individual countries have chosen to respond to specific policy challenges and what the consequences have been. We discuss many controversies where there are still sharp differences in views between and amongst theorists and practitioners. We also delineate a few key analytical issues where there is still a yawning gap between theory and practice. In the process, we set out a broad agenda for further research in this area.
Inferring the in vivo looping properties of DNA
Creators: name: Saiz, Leonor
name: Rubi, J. Miguel
name: Vilar, Jose M. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Quantitative Methods (q-bio.QM)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The free energy of looping DNA by proteins and protein complexes determines to what extent distal DNA sites can affect each other. We inferred its in vivo value through a combined computational-experimental approach for different lengths of the loop and found that, in addition to the intrinsic periodicity of the DNA double helix, the free energy has an oscillatory component with about half the helical period. Moreover, the oscillations have such an amplitude that the effects of regulatory molecules become strongly dependent on their precise DNA positioning and yet easily tunable by their cooperative interactions. These unexpected results can confer to the physical properties of DNA a more prominent role at shaping the properties of gene regulation than previously thought.
description: 20 pages, 4 figures
Conceptualizing Informality: Regulation and Enforcement
Creators: name: Kanbur, Ravi
name: Kanbur, Ravi
Publisher: name: Unknown
Year: 2009
Subjects: Food Security and Poverty
Health Economics and Policy
International Development
International Relations/Trade
Political Economy

description: The informality discourse is large, vibrant and expanding fast. But there is a certain conceptual incoherence to the literature. New definitions of informality compete with old definitions leading to a plethora of alternative conceptualisations. While some individual studies may apply a tight definition consistently, the literature as a whole is in a mess. This paper proposes that informality and formality should be seen in direct relation to economic activity in the presence of specified regulation(s). Relative to the regulation(s), four conceptual categories that can help frame the analysis are: (A) regulation applicable and compliant, (B) regulation applicable and non-compliant, (C) regulation non-applicable after adjustment of activity and (D) regulation non-applicable to the activity. Rather than use the generic labels informal/formal, it would be preferable if the analysis focused on these four categories (or even more disaggregated as appropriate). A central determining factor in the impacts of regulation on economic activity across these four categories is the nature and intensity of enforcement. While lack of enforcement is well documented, understanding of its determinants—why and to what extent a government would not enforce a regulation that is has itself passed, and why non-enforcement varies from one context to another, is relatively neglected in the literature. Thus specificity on regulation and on enforcement is the key to achieving conceptual clarity in the analytical literature and in the policy discourse on informality.
Nanoscopic Study of the Ion Dynamics in a LiAlSiO$_4$ Glass Ceramic by means of Electrostatic Force Spectroscopy
Creators: name: Roling, Bernhard
name: Schirmeisen, André
name: Bracht, Hartmut
name: Taskiran, Ahmet
name: Fuchs, Harald
name: Murugavel, Sevi
name: Natrup, Frank
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We use time-domain electrostatic force spectroscopy (TD-EFS) for characterising the dynamics of mobile ions in a partially crystallised LiAlSiO$_4$ glass ceramic, and we compare the results of the TD-EFS measurements to macroscopic electrical conductivity measurements. While the macroscopic conductivity spectra are determined by a single dynamic process with an activation energy of 0.72 eV, the TD-EFS measurements provide information about two distinct relaxation processes with different activation energies. Our results indicate that the faster process is due to ionic movements in the glassy phase and at the glass-crystal interfaces, while the slower process is caused by ionic movements in the crystallites. The spatially varying electrical relaxation strengths of the fast and of the slow process provide information about the nano- and mesoscale structure of the glass ceramic.
description: 5 pages, 4 figures
Fast Geometric Surface based Segmentation of Point Cloud from Lidar Data
Creators: name: Mukherjee, Aritra
name: Das, Sourya Dipta
name: Ghosh, Jasorsi
name: Chowdhury, Ananda S.
name: Saha, Sanjoy Kumar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Mapping the environment has been an important task for robot navigation and Simultaneous Localization And Mapping (SLAM). LIDAR provides a fast and accurate 3D point cloud map of the environment which helps in map building. However, processing millions of points in the point cloud becomes a computationally expensive task. In this paper, a methodology is presented to generate the segmented surfaces in real time and these can be used in modeling the 3D objects. At first an algorithm is proposed for efficient map building from single shot data of spinning Lidar. It is based on fast meshing and sub-sampling. It exploits the physical design and the working principle of the spinning Lidar sensor. The generated mesh surfaces are then segmented by estimating the normal and considering their homogeneity. The segmented surfaces can be used as proposals for predicting geometrically accurate model of objects in the robots activity environment. The proposed methodology is compared with some popular point cloud segmentation methods to highlight the efficacy in terms of accuracy and speed.
description: Accepted to PReMI 2019( Pattern Recognition and Machine Intelligence 2019). International Conference on Pattern Recognition and Machine Intelligence. Springer, Cham, 2019
Towards a precise measurement of the top quark Yukawa coupling at the ILC
Creators: name: Juste, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A precise measurement of the top quark Yukawa coupling is of great importance, since it may shed light on the mechanism of EWSB. We study the prospects of such measurement during the first phase of the ILC at sqrt(s)=500 GeV, focusing in particular on recent theoretical developments as well as the potential benefits of beam polarization. It is shown that both yield improvements that could possibly lead to a measurement competitive with the LHC.
description: Invited talk at 2005 International Linear Collider Physics and Detector Workshop and Second ILC Accelerator Workshop, Snowmass, CO (Snowmass05) 3 pages, LaTeX, 3 eps figures
Spatially Resolved Spectroscopy of the E+A Galaxies in the z=0.32 Cluster AC114
Creators: name: Pracy, M. B.
name: Couch, W. J.
name: Blake, C.
name: Bekki, K.
name: Harrison, C.
name: Colless, M.
name: Kuntschner, H.
name: de Propris, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present spatially resolved intermediate resolution spectroscopy of a sample of twelve E+A galaxies in the z=0.32 rich galaxy cluster AC 114, obtained with the FLAMES multi-integral field unit system on the European Southern Observatory's VLT. Previous integrated spectroscopy of all these galaxies by Couch & Sharples (1987) had shown them to have strong Balmer line absorption and an absence of [OII 3727] emission -- the defining characteristics of the``E+A'' spectral signature, indicative of an abrupt halt to a recent episode of quite vigorous star formation. We have used our spectral data to determine the radial variation in the strength of Hdelta absorption in these galaxies and hence map out the distribution of this recently formed stellar population. Such information provides important clues as to what physical event might have been responsible for this quite dramatic change in star formation activity in these galaxies' recent past. We find a diversity of behaviour amongst these galaxies in terms of the radial variation in Hdelta absorption: Four galaxies show little Hdelta absorption across their entire extent; it would appear they were misidentified as E+A galaxies in the earlier integrated spectroscopic studies. The remainder show strong Hdelta absorption, with a gradient that is either negative (Hdelta equivalent width decreasing with radius), flat, or positive. By comparing with numerical simulations we suggest that the first of these different types of radial behaviour provides evidence for a merger/interaction origin, whereas the latter two types of behaviour are more consistent with the truncation of star formation in normal disk galaxies. It would seem therefore that more than one physical mechanism is responsible for E+A formation in the same environment.
description: 15 pages, 10 figures, accepted MNRAS
Representing concerns in source code
Creators: name: Robillard, Martin P.
Publisher: name: University of British Columbia
Year: 2009

description: Many program evolution tasks involve source code that is not modularized as a single unit. Furthermore, the source code relevant to a change task often implements different concerns, or high-level concepts that a developer must consider. Finding and understanding concerns scattered in source code is a difficult task that accounts for a large proportion of the effort of performing program evolution. One possibility to mitigate this problem is to produce textual documentation that describes scattered concerns. However, this approach is impractical because it is costly, and because, as a program evolves, the documentation becomes inconsistent with the source code. The thesis of this dissertation is that a description of concerns, representing program structures and linked to source code, that can be produced cost-effectively during program investigation activities, can help developers perform software evolution tasks more systematically, and on different versions of a system. To validate the claims of this thesis, we have developed a model for a structure, called concern graph, that describes concerns in source code in terms of relations between program elements. The model also defines precisely the notion of inconsistency between a concern graph and the corresponding source code, so that it is possible to automatically detect and repair inconsistencies between a description of source code and an actual code base. To experiment with concern graphs, we have developed a tool, called FEAT, that allows developers to iteratively build concern graphs when investigating source code, to view the code related to a concern, and to perform analyses on a concern representation. Using FEAT, we have evaluated the cost and usefulness of concern graphs in a series of case studies involving the evolution of five systems of different size and style. The results show that concern graphs are inexpensive to create during program investigation, can help developers perform program evolution tasks more systematically, and are robust enough to represent concerns in different versions of a system.
Murina eleryi Furey 2009
Creators: name: Francis, Charles M.
name: Eger, Judith L.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Vespertilionidae
Murina
Murina eleryi

description: Murina eleryi Furey et al. 2009
(Figs. 3f, 4f, 5f; Tables 1, 2; Map Fig. 1d)
 Murina aurata: Francis et al. 1999: 233, 2010: 6; Francis 2008: 253 (part).
 Specimens examined from Laos
ROM: 1 ♂, 2 ♀♀; EBD: 1 ♀ (see Appendix for details, including information from adjacent countries and the literature).
 Description
The fur of the dorsum is banded with dark grey to blackish bases for about 25% of the length, then a paler whitish to buffy band that blends into an orange brown band, then a dark brown band. Some of the longer hairs then have golden tips for up to 15% of the length giving a gilded appearance. The ventral fur has dark grey or blackish bases for about 50% of the length, with silvery grey to white distal half. The tail membrane is sparsely covered with long yellow-brown hairs, and the feet and legs are thickly haired. The ears are small and rounded; the tragus straight, pointed and whitish. The wing membrane is inserted on the side of the toe, near the base of the claw.
 This is the smallest Murina in Laos (Tables 1 and 2), particularly in skull dimensions (Fig. 3f). The anterior upper premolar (P 2) is substantially shorter than the posterior premolar (P 4), while the canine is slightly longer than P 4 (Fig. 4f). In the mandible, P 2 is substantially smaller in surface area, and about 2/3 the height of P 4, while C 1 is about 50% taller than P 4 (Fig. 5f).
 Discussion
 These specimens were originally reported by Francis et al. (1999) as M. aurata Milne-Edwards 1872, based on their small size and the similarity in fur colour to the description in Hill (1983), although with some hesitation given that the canines, although small, were longer than the posterior premolars, contrary to the keys in Hill (1992). However, they agree well in both fur colour and cranial shape with the description of M. eleryi by Furey et al. (2009).
 Distribution and ecology
 Three of the specimens that we captured in Laos were found in wet evergreen montane forest in the Annamite Mountains, at an altitude of 1000–1140 m. An additional five specimens were captured during surveys in Vietnam, in Quang Nam province. Four of these were captured in premontane evergreen forest at about 830 m, but one was caught in secondary forest at the base of the hills at 200 m. Additional specimens from the ROM in southern China, together with those reported by Furey et al. (2009) suggest it may be widely distributed through Vietnam and adjacent areas of Laos, though possibly largely in montane regions (Fig. 1d).
description: Published as part of Francis, Charles M. & Eger, Judith L., 2012, A review of tube-nosed bats (Murina) from Laos with a description of two new species, pp. 15-38 in Acta Chiropterologica 14 (1) on page 28, DOI: 10.3161/150811012X654231, http://zenodo.org/record/3945152
Initial-boundary value problem for 2D magneto-micropolar equations with zero angular viscosity
Creators: name: Wang, Shasha
name: Xu, Wen-Qing
name: Liu, Jitao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper, we are concerned with the initial-boundary value problem to the 2D magneto-micropolar system with zero angular viscosity in a smooth bounded domain. We prove that there exists a unique global strong solution of such a system by imposing natural boundary conditions and regularity assumptions on the initial data, without any compatibility condition.
description: 21 pages
Additional file 1 of The actual and anticipated effects of a menthol cigarette ban: a scoping review
Creators: name: Cadham, Christopher J.
name: Sanchez-Romero, Luz Maria
name: Fleischer, Nancy L.
name: Ritesh Mistry
name: Hirschtick, Jana L.
name: Meza, Rafael
name: Levy, David T.
Publisher: name: figshare
Year: 2020
Subjects: subject: Neuroscience
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 1: Table 1. Studies of flavored other tobacco product bans that excluded over 21 establishments.
Inelastic electron tunneling via molecular vibrations in single-molecule transistors
Creators: name: Yu, L. H.
name: Keane, Z. K.
name: Ciszek, J. W.
name: Cheng, L.
name: Stewart, M. P.
name: Tour, J. M.
name: Natelson, D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In single-molecule transistors, we observe inelastic cotunneling features that correspond energetically to vibrational excitations of the molecule, as determined by Raman and infrared spectroscopy. This is a form of inelastic electron tunneling spectroscopy of single molecules, with the transistor geometry allowing in-situ tuning of the electronic states via a gate electrode. The vibrational features shift and change shape as the electronic levels are tuned near resonance, indicating significant modification of the vibrational states. When the molecule contains an unpaired electron, we also observe vibrational satellite features around the Kondo resonance.
description: 5 pages, 4 figures. Supplementary information available upon request
Additional file 8 of Multivariate network meta-analysis incorporating class effects
Creators: name: Owen, Rhiannon K.
name: Bujkiewicz, Sylwia
name: Tincello, Douglas G.
name: Abrams, Keith R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 8 Sensitivity analyses.
Harmonic crossover exponents in O(n) models with the pseudo-epsilon expansion approach
Creators: name: Calabrese, Pasquale
name: Parruccini, Pietro
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We determine the crossover exponents associated with the traceless tensorial quadratic field, the third- and fourth-harmonic operators for O(n) vector models by re-analyzing the existing six-loop fixed dimension series with pseudo-epsilon expansion. Within this approach we obtain the most accurate theoretical estimates that are in optimum agreement with other theoretical and experimental results.
description: 12 pages, 1 figure. Final version accepted for publication
The Panofsky-Newman Controversy
Creators: name: Conte, Pietro
Publisher: name: Aisthesis. Pratiche, linguaggi e saperi dell’estetico
Year: 2015

description: Starting from Erwin Panofsky’s well-known polemical exchange of letters with Barnett Newman, and taking into account some few hints to contemporary artists which can be found into the Princeton Professor’s private correspondence, this essay deals with the theoretical reasons why one of the most original and influent art historians of the whole 20th Century has never really come to terms with even the notion of “abstract” art. It then focuses on the seemingly paradoxical concept of “abstract sublime” as proposed by Robert Rosenblum and further developed by Jean-François Lyotard in order to show how iconographic-iconological analysis could be fruitfully applied to non-figurative works of art.
description: Aisthesis. Pratiche, linguaggi e saperi dell’estetico, Vol. 8 No. 2 (2015): Warburghiana and Benjaminiana
On 3D and 1D Weyl particles in a 1D box
Creators: name: De Vincenzo, Salvatore
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We construct the most general families of self-adjoint boundary conditions for three (equivalent) Weyl Hamiltonian operators, each describing a three-dimensional Weyl particle in a one-dimensional box situated along a Cartesian axis. These results are essentially obtained by using the most general family of self-adjoint boundary conditions for a Dirac Hamiltonian operator that describes a one-dimensional Dirac particle in a box, in the Weyl representation, and by applying simple changes of representation to this operator. Likewise, we present the most general family of self-adjoint boundary conditions for a Weyl Hamiltonian operator that describes a one-dimensional Weyl particle in a one-dimensional box. We also obtain and discuss throughout the article distinct results related to the Weyl equations in (3+1) and (1+1) dimensions, in addition to their respective wave functions, and present certain key results related to representations for the Dirac equation in (1+1) dimensions.
description: 26 pages
Additional file 7 of Multivariate network meta-analysis incorporating class effects
Creators: name: Owen, Rhiannon K.
name: Bujkiewicz, Sylwia
name: Tincello, Douglas G.
name: Abrams, Keith R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 7 Convergence diagnostics.
Solving Dynamical Mean-Field Theory at very low temperature using Lanczos Exact Diagonalization
Creators: name: Capone, M.
name: Medici, L. de'
name: Georges, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present an efficient method to solve the impurity Hamiltonians involved in Dynamical Mean-Field Theory at low but finite temperature, based on the extension of the Lanczos algorithm from ground state properties alone to excited states. We test the approach on the prototypical Hubbard model and find extremely accurate results from T=0 up to relatively high temperatures, up to the scale of the critical temperature for the Mott transition. The algorithm substantially decreases the computational effort involved in finite temperature calculations.
description: 7 pages, 4 figures
ФИЛОСОФСКИЕ СОДЕРЖАНИЕ ТВОРЧЕСТВА А.ЧЕХОВА
Creators: name: Олимова Мохидил Фазлиддин кизи Заведующий кафедрой русского и английского языка Наманганского международного университета
Publisher: name: Zenodo
Year: 2024

description: О Дос­то­ев­ском на­пи­са­ны сот­ни книг и ты­ся­чи ста­тей, в про­цес­се ис­сле­до­ва­ния его твор­че­ст­ва мно­гие ав­то­ры соз­да­ва­ли о пи­са­те­ле свое­об­раз­ные ми­фы, один из ко­то­рых за­клю­ча­ет­ся в том, что Дос­то­ев­ский  яко­бы яв­ля­ет­ся пред­ше­ст­вен­ни­ком эк­зи­стен­циа­лиз­ма. В данной статье рассматриваются философские содержание творчества А.Чехова.

Ключевые слова: литература, философские взгляды, бюрократизм, конформизм, лицемерие, фальшь, равнодушие, эгоизм, великий поэт
Promising photovoltaic efficiency of a layered silicon oxide crystal Si$_{3}$O
Creators: name: Kim, Sejoong
name: Chae, Kisung
name: Son, Young-Woo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Computational searching and screening of new functional materials exploiting earth abundant elements can accelerate developments of their energy applications. Based on a state-of-the-art materials search algorithm and ab initio calculations, we demonstrate a recently suggested stable silicon oxide with a layered structure (Si$_{3}$O) as an ideal photovoltaic material. With many-body first-principles approaches, the monolayer and layered bulk of Si$_{3}$O show direct quasiparticle gaps of 1.85 eV and 1.25 eV, respectively, while an optical gap of about 1.2 eV is nearly independent of the number of layers. Spectroscopic limited maximum efficiency (SLME) is estimated to be 27% for a thickness of 0.5 μm, making it a promising candidate for solar energy applications.
CURRENT ISSUES OF MAJOR REPAIRS
Creators: name: Shpinev Iu.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: regional capital repair systems
energy efficiency
housing
monitoring
apartment buildings
major repairs.

description: This article is devoted to the main problems of the development of the regional system of capital repairs of apartment buildings, which the author refers to the lack of a modern monitoring system and mechanisms for improving the energy efficiency of apartment buildings during the period of capital repairs, inefficient financial policy of regional programs and their weak financial stability, as well as weak interaction of all participants in the process both vertically and horizontally. The author examines the regulations on the repair of apartment buildings, the general condition of the housing stock, and also offers a solution to the identified problems that hinder the development of the system of major repairs of residential buildings. Thus, it is concluded that it is necessary to increase the use of digital technologies for monitoring dilapidated and dilapidated housing, and in conclusion, the article concludes that a comprehensive solution to the identified problems will contribute to the development of a regional system of major repairs of apartment buildings.
Collective properties of indirect excitons in coupled quantum wells in random field
Creators: name: Berman, Oleg L.
name: Lozovik, Yurii E.
name: Snoke, David W.
name: Coalson, Rob D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The influence of a random field induced by impurities, boundary irregularities etc. on the superfluidity of a quasi-two-dimensional (2D) system of spatially indirect excitons in coupled quantum wells is studied. The interaction between excitons is taken into account in the ladder approximation. The random field is allowed to be large compared to the dipole-dipole repulsion between excitons. The coherent potential approximation (CPA) allows us to derive the exciton Green's function for a wide range of the random field, and the CPA results are used in the weak-scattering limit, which results in the second-order Born approximation. The Green's function of the collective excitations for the cases of (1) equal electron and hole masses and (2) the ``heavy hole'' limit are derived analytically. For quasi-two-dimensional excitonic systems, the density of the superfluid component and the Kosterlitz-Thouless temperature of the superfluid phase transition are obtained, and are found to decrease as the random field increases. This puts constraints on the experimental efforts to observe excitonic superfluidity.
description: 16 pages, 6 figures
Additional file 4 of Multivariate network meta-analysis incorporating class effects
Creators: name: Owen, Rhiannon K.
name: Bujkiewicz, Sylwia
name: Tincello, Douglas G.
name: Abrams, Keith R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 4 WinBUGS code.
Second virial coefficients for helium-4 and helium-3 from accurate relativistic interaction potential
Creators: name: Czachorowski, Paweł
name: Przybytek, Michał
name: Lesiuk, Michał
name: Puchalski, Mariusz
name: Jeziorski, Bogumił
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The second virial coefficient and the second acoustic virial coefficient for helium-4 and helium-3 are computed for a wide range of temperatures (0.5 - 1000K) using a highly accurate nonrelativistic interaction potential [M. Przybytek et al., Phys. Rev. Lett. 119, 123401 (2017)] and recalculated relativistic and quantum-electrodynamic components. The effects of the long-range retardation and of the nonadiabatic coupling of the nuclear and electronic motion are also taken into account. The results of our calculations represent at least fivefold improvement in accuracy compared to the previous ab initio work. The computed virial coefficients agree well with the most accurate recent measurements but have significantly smaller uncertainty.
description: 13 pages, 2 figures, 7 suplemental files; includes changes introduced during the peer review and the proofreading process; published in Phys. Rev. A (copyrighted by American Physical Society): https://journals.aps.org/pra/abstract/10.1103/PhysRevA.102.042810
Prediction of Weather Event Associated Crop Yield Losses in Kansas
Creators: name: Wang, Erda
name: Williams, Jimmy R.
name: Little, Bertis B.
name: Wang, Erda
name: Williams, Jimmy R.
name: Little, Bertis B.
Publisher: name: Unknown
Year: 2006
Subjects: Crop Production/Industries

description: The Environmental Policy Integrated Climate (EPIC) model was modified to include hail weather events, completing modification needed to simulate the four most frequent causes of crop yield loss (hail, too wet, too cold, too dry) in the Kansas crop insurance program. Yields were simulated for corn, wheat, soybeans, and sorghum.
Refined Analytic Torsion as an Element of the Determinant Line
Creators: name: Braverman, Maxim
name: Kappeler, Thomas
Publisher: name: arXiv
Year: 2005
Subjects: subject: Geometric Topology (math.GT)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 58J52, 58J28, 57R20

description: We construct a canonical element, called the refined analytic torsion, of the determinant line of the cohomology of a closed oriented odd-dimensional manifold M with coefficients in a flat complex vector bundle E. We compute the Ray-Singer norm of the refined analytic torsion. In particular, if there exists a flat Hermitian metric on E, we show that this norm is equal to 1. We prove a duality theorem, establishing a relationship between the refined analytic torsions corresponding to a flat connection and its dual.
description: A sign in the definition (4.2) is changed (we are grateful to Guangxiang Su for this correction). Some minor misprints are also corrected
Additional file 5 of Multivariate network meta-analysis incorporating class effects
Creators: name: Owen, Rhiannon K.
name: Bujkiewicz, Sylwia
name: Tincello, Douglas G.
name: Abrams, Keith R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 5 Univariate network meta-analyses results for change from baseline in incontinence, voiding and urgency episodes.
Herzog zu Sachsen, Johann Georg: Streifzüge durch die Kirchen und Klöster Ägyptens
Creators: name: Sauer, J.
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 13 Nr. 1 (1915): Oriens christianus, Band 13, Heft 1
Additional file 6 of Multivariate network meta-analysis incorporating class effects
Creators: name: Owen, Rhiannon K.
name: Bujkiewicz, Sylwia
name: Tincello, Douglas G.
name: Abrams, Keith R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 6 Treatment profiles obtained from univariate network meta-analyses for change from baseline in incontinence, voiding and urgency episodes.
Lepton masses and mixing angles from heterotic orbifold models
Creators: name: Ko, Pyungwon
name: Kobayashi, Tatsuo
name: Park, Jae-hyeon
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We systematically study the possibility for realizing realistic values of lepton mass ratios and mixing angles by using only renormalizable Yukawa couplings derived from heterotic $Z_6$-I orbifold. We assume one pair of up and down sector Higgs fields. We consider both the Dirac neutrino mass scenario and the seesaw scenario with degenerate right-handed majorana neutrino masses. It is found that realistic values of the charged lepton mass ratios, $m_e/m_τ$ and $m_μ/m_τ$, the neutrino mass squared difference ratio, $Δm^2_{31}/Δm^2_{21}$, and the lepton mixing angles can be obtained in certain cases.
description: 22 pages, latex
Wave Functions of the Toda Chain with Boundary Interaction
Creators: name: Iorgov, Nikolai
name: Shadura, Vitaly
Publisher: name: arXiv
Year: 2004
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this contribution, we give an integral representation of the wave functions of the quantum N-particle Toda chain with boundary interaction. In the case of the Toda chain with one-boundary interaction, we obtain the wave function by an integral transformation from the wave functions of the open Toda chain. The kernel of this transformation is given explicitly in terms of Γ-functions. The wave function of the Toda chain with two-boundary interaction is obtained from the previous wave functions by an integral transformation. In this case, the difference equation for the kernel of the integral transformation admits separation of variables. The separated difference equations coincide with the Baxter equation.
description: 14 pages, based on the talk given at the Workshop ``Classical and quantum integrable systems'' (Dubna, January 2004)
Best Linear Approximation of Nonlinear Continuous-Time Systems Subject to Process Noise and Operating in Feedback
Creators: name: Pintelon, Rik
name: Schoukens, Maarten
name: Lataire, John
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In many engineering applications the level of nonlinear distortions in frequency response function (FRF) measurements is quantified using specially designed periodic excitation signals called random phase multisines and periodic noise. The technique is based on the concept of the best linear approximation (BLA) and it allows one to check the validity of the linear framework with a simple experiment. Although the classical BLA theory can handle measurement noise only, in most applications the noise generated by the system -- called process noise -- is the dominant noise source. Therefore, there is a need to extend the existing BLA theory to the process noise case. In this paper we study in detail the impact of the process noise on the BLA of nonlinear continuous-time systems operating in a closed loop. It is shown that the existing nonparametric estimation methods for detecting and quantifying the level of nonlinear distortions in FRF measurements are still applicable in the presence of process noise. All results are also valid for discrete-time systems and systems operating in open loop.
description: Accepted for publication in IEEE Transactions on Instrumentation & Measurement
Cotton Trade Liberalizations and Domestic Agricultural Policy Reforms: A Partial Equilibrium Analysis
Creators: name: Pan, Suwen
name: Fadiga, Mohamadou L.
name: Mohanty, Samarendu
name: Welch, Mark
name: Pan, Suwen
name: Fadiga, Mohamadou L.
name: Mohanty, Samarendu
name: Welch, Mark
Publisher: name: Unknown
Year: 2006
Subjects: Agricultural and Food Policy

description: This paper analyzed the effects of trade liberalizing reforms in the world cotton market using a partial equilibrium model. The simulation results indicated that a removal of domestic subsidies and border tariffs for cotton would increase the amount of world cotton trade by an average of 4% in the next five years and world cotton prices by an average of 12% over the same time horizon. The findings indicated that under the liberalization policy, the United States would lose part of its export share to Brazil, Australia, and Africa. Furthermore, net cotton importing countries with minimum domestic and trade distortions would import less because of higher cotton prices whereas net cotton importing countries that subsidize domestic production and/or impose border tariffs (China, European Union, Pakistan, and Turkey) would significantly increase their imports.
Additional file 3 of Multivariate network meta-analysis incorporating class effects
Creators: name: Owen, Rhiannon K.
name: Bujkiewicz, Sylwia
name: Tincello, Douglas G.
name: Abrams, Keith R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 3 Estimating between-study and within-study correlations.
Annular substructures in the transition disks around LkCa 15 and J1610
Creators: name: Facchini, S.
name: Benisty, M.
name: Bae, J.
name: Loomis, R.
name: Perez, L.
name: Ansdell, M.
name: Mayama, S.
name: Pinilla, P.
name: Teague, R.
name: Isella, A.
name: Mann, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present high resolution millimeter continuum ALMA observations of the disks around the T Tauri stars LkCa 15 and J1610. These disks host dust-depleted inner regions, possibly carved by massive planets, and are of prime interest to study the imprints of planet-disk interactions. While at moderate angular resolution they appear as a broad ring surrounding a cavity, the continuum emission resolves into multiple rings at a resolution of ~60$\times$40 mas (~7.5 au for LkCa 15, ~6 au for J1610) and ~$7\,μ$Jy beam$^{-1}$ rms at 1.3 mm. In addition to a broad extended component, LkCa 15 and J1610 host 3 and 2 narrow rings, respectively, with two bright rings in LkCa 15 being radially resolved. The rings look marginally optically thick, with peak optical depths of ~0.5 (neglecting scattering), in agreement with high angular resolution observations of full disks. We perform hydrodynamical simulations with an embedded, sub-Jovian-mass planet and show that the observed multi-ringed substructure can be qualitatively explained as the outcome of the planet-disk interaction. We note however that the choice of the disk cooling timescale alone can significantly impact the resulting gas and dust distributions around the planet, leading to different numbers of rings and gaps and different spacings between them. We propose that the massive outer disk regions of transition disks are favorable places for planetesimals and possibly second generation planet formation of objects with a lower mass than the planets carving the inner cavity (typically few $M_{\rm Jup}$), and that the annular substructures observed in LkCa 15 and J1610 may be indicative of planetary core formation within dust-rich pressure traps. Current observations are compatible with other mechanisms being at the origin of the observed substructures, in particular with narrow rings generated at the edge of the CO and N$_2$ snowlines.
description: 17 pages, accepted for publication in Astronomy & Astrophysics
Use of Bootstrap Method to Obtain Reliable Parameter Estimations on Travel Cost Demand Model
Creators: name: Devkota, Nirmala
name: Paudel, Krishna P.
name: Hall, Larry M.
name: Caffey, Rex H.
name: Devkota, Nirmala
name: Paudel, Krishna P.
name: Hall, Larry M.
name: Caffey, Rex H.
Publisher: name: Unknown
Year: 2006
Subjects: Resource /Energy Economics and Policy

description: We used poisson and negative binomial models to estimate future demand of recreation trips to a closed site using internet and intercept surveys. Parameter estimates were validated using 1,000 bootstrap replications. Result indicated a significant negative impact of travel time and positive impact of income on the future recreational demand.
Excited and exotic bottomonium spectroscopy from lattice QCD
Creators: name: Ryan, Sinéad M.
name: Wilson, David J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the spectrum of excited and exotic bottomonia using lattice QCD. Highly excited states are identified with masses up to 11,000 MeV, many of which can be grouped into supermultiplets matching those of the quark model while exotic spin--parity--charge-conjugation quantum numbers $J^{PC}=0^{+-},\,1^{-+},\,2^{+-}$ that cannot be formed from $\bar{q}q$ alone are also identified. Single-meson operator constructions are used that have good $J^{PC}$ in the continuum, these are found to overlap well onto heavy quark states with $J\le4$. A continuum $J^{PC}$ is assigned to each level, based on the distribution amongst lattice irreps and dominant operator overlaps. States with a dominant gluonic component are identified and form a hybrid supermultiplet with $J^{PC}=(0,1,2)^{-+},\, 1^{--}$, approximately 1500 MeV above the ground-state $η_b$, similar to previous computations with light, strange and charm quark systems.
description: 22 pages, 9 figures
Wulff, Oskar: Altchristliche und byzantische Kunst
Creators: name: Baumstark, Anton
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 13 Nr. 1 (1915): Oriens christianus, Band 13, Heft 1
High efficiency symmetric beam splitter for cold atoms with a standing wave light pulse sequence
Creators: name: Wu, Saijun
name: Wang, Yingju
name: Diot, Quentin
name: Prentiss, Mara
Publisher: name: arXiv
Year: 2004
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In a recent experiment [1], it was observed that a sequence of two standing wave square pulses can split a BEC at rest into +/- 2 h_bar k diffraction orders with almost 100% efficiency. By truncating the Raman-Nath equations to a 2-state model, we provide an intuitive picture that explains this double square pulse beamsplitter scheme. We further show it is possible to optimize a standingwave multi square pulse sequence to efficiently diffract an atom at rest to symmetric superposition of +/- 2n h_bar k diffraction order with n>1. The approach is considered to be qualitatively different from the traditional light pulse schemes in the Bragg or the Raman-Nath region, and can be extended to more complex atomic optical elements that produce various tailored output momentum states from a cold atom source.
description: 22 pages, 4 figures, 1 table
Quantum Limited Source Localization and Pair Superresolution under Finite Emission Bandwidth
Creators: name: Prasad, Sudhakar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Optically localizing a single quasi-monochromatic source to sub-diffractive precisions entails, in the photon-counting limit, a minimum photon cost that scales as the squared ratio of the width, $w$, of the optical system's point-spread function (PSF) and the sought localization precision, $d$, i.e., as $α(w/d)^2$. For sources with a finite emission-frequency spectrum, while the inverse quadratic scaling is expected to remain unchanged, the coefficient $α$ must increase due to a degrading fidelity of localization as the imaging bandwidth increases and PSF undergoes a frequency-dependent widening. We specifically address how rapidly $α$ must increase with increasing width of a flat-top spectral profile of emission of a point source being localized in two dimensions by an imager with a clear circular aperture by calculating quantum Fisher information (QFI), whose inverse yields the lowest possible unbiased-estimation variance of source-localization error. The novel use of prolate spheroidal wave functions as a basis for obtaining a solution of the eigenvalue problem of the single-photon density operator needed for the QFI calculation helps us develop the notion of an effective dimensionality of the continuous-state problem in terms of the associated space-bandwidth parameter. We subsequently extend our considerations of QFI to treat the finite-bandwidth pair superresolution problem in two dimensions, obtaining similar results. We also consider generalizations to emission power spectra of arbitrary profiles.
description: 6 figures; also submitted to Physical Review A
Properties of the strongly paired fermionic condensates
Creators: name: Levinsen, J.
name: Gurarie, V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a gas of fermions undergoing a wide resonance s-wave BCS-BEC crossover, in the BEC regime at zero temperature. We calculate the chemical potential and the speed of sound of this Bose-condensed gas, as well as the condensate depletion, in the low density approximation. We discuss how higher order terms in the low density expansion can be constructed. We demonstrate that the standard BCS-BEC gap equation is invalid in the BEC regime and is inconsistent with the results obtained here. We indicate how our theory can in principle be extended to nonzero temperature. The low density approximation we employ breaks down in the intermediate BCS-BEC crossover region. Hence our theory is unable to predict how the chemical potential and the speed of sound evolve once the interactions are tuned towards the BCS regime. As a part of our theory, we derive the well known result for the bosonic scattering length diagrammatically and check that there are no bound states of two bosons.
description: 16 pages, 15 figures. References added and typos corrected