cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Classification and Moduli Kahler Potentials of G_2 Manifolds
Creators: name: Barrett, Adam B
name: Lukas, Andre
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Compact manifolds of G_2 holonomy may be constructed by dividing a seven-torus by some discrete symmetry group and then blowing up the singularities of the resulting orbifold. We classify possible group elements that may be used in this construction and use this classification to find a set of possible orbifold groups. We then derive the moduli Kahler potential for M-theory on the resulting class of G_2 manifolds with blown up co-dimension four singularities.
description: 30 pages, Latex, references added
Van der Corput lemmas for Mittag-Leffler functions. II. $α$-directions
Creators: name: Ruzhansky, Michael
name: Torebek, Berikbol T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: The paper is devoted to study analogues of the van der Corput lemmas involving Mittag-Leffler functions. The generalisation is that we replace the exponential function with the Mittag-Leffler-type function, to study oscillatory integrals appearing in the analysis of time-fractional partial differential equations. More specifically, we study integral of the form $I_{α,β}(λ)=\int_\mathbb{R}E_{α,β}\left(i^αλϕ(x)\right)ψ(x)dx,$ for the range $00$. This extends the variety of estimates obtained in the first part, where integrals with functions $E_{α,β}\left(i λϕ(x)\right)$ have been studied. Several generalisations of the van der Corput lemmas are proved. As an application of the above results, the generalised Riemann-Lebesgue lemma, the Cauchy problem for the time-fractional Klein-Gordon and time-fractional Schrödinger equations are considered.
description: 19 pages
Developing Income Proxy Models for USAID Mission in Kenya: A Technical Report
Creators: name: Tschirley, David L.
name: Mathenge, Mary K.
name: Tschirley, David L.
name: Mathenge, Mary K.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Food Security and Poverty
subject: Food Security
subject: Food Policy
subject: Income Proxy Model
subject: Kenya

description: This paper details the specific procedures utilized to develop the income proxy method for the USIAD/Kenya mission, reports on the performance of the method, and brings together in one place each part of the package needed to implement the method. The next section provides general background on income proxy methods; section III reports briefly on the Tegemeo/MSU Tampa full income survey that formed the basis for development of the proxy method; section IV provides details on model development, including definition of income components, the types of proxy variables tested, and the performance of the models; section V assesses model performance, and section VI touches on how the models can be used.
Self-similar Evolutionary Solutions for Accreting Magneto-fluid around a Compact Object with Finite Electrical Conductivity
Creators: name: Habibi, F.
name: Pazhouhesh, R.
name: Shaghaghian, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this paper, we investigate the time evolution an accreting magneto-fluid with finite conductivity. For the case of a thin disk, the fluid equations along with Maxwell equations are derived in a simplified, one-dimensional model that neglects the latitudinal dependence of the flow. The finite electrical conductivity is taken into account for the plasma through Ohm law; however, the shear viscous stress is neglected, as well as the self-gravity of the disk. In order to solve the integrated equations that govern the dynamical behaviour of the magneto-fluid, we have used a self-similar solution. We introduce two dimensionless variables, $S_0$ and $ε_ρ$, which show the magnitude of electrical conductivity and the density behaviour with time, respectively. The effect of each of these on the structure of the disk is studied. While the pressure is obtained simply by solving an ordinary differential equation, the density, the magnetic field, the radial velocity and the rotational velocity are presented analytically. The solutions show that the $S_0$ and $ε_ρ$ parameters affect the radial thickness of the disk. Also, the radial velocity and gas pressure are more sensitive to electrical conductivity in the inner regions of disk. Moreover, the $ε_ρ$ parameter has a more significant effect on physical quantities in small radii.
Schrock_Tables_Figures_ESM from Do fungi look like macroparasites? Quantifying the patterns and mechanisms of aggregation for host-fungal parasite relationships
Creators: name: Schrock, Sarah Ashley Ruth
name: Walsman, Jason Cosens
name: DeMarchi, Joseph A
name: LeSage, Emily
name: Ohmer, Michel E B
name: Rollins-Smith, Louise
name: Briggs, Cheryl
name: Zawacki, Cori
name: Woodhams, Douglas C
name: Knapp, Roland A
name: Smith, Thomas C
name: Haddad, Célio F.
name: Becker, Guilherme
name: Johnson, Pieter
name: Wilber, Mark
Publisher: name: The Royal Society
Year: 2025
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified

description: Contains the supplementary methods, tables, and figures referenced within the main text.
Structural magnetic glassiness in spin ice Dy$_2$Ti$_2$O$_7$
Creators: name: Samarakoon, Anjana M.
name: Sokolowski, Andre
name: Klemke, Bastian
name: Feyerherm, Ralf
name: Meissner, Michael
name: Borzi, R. A.
name: Ye, Feng
name: Zhang, Qiang
name: Dun, Zhiling
name: Zhou, Haidong
name: Egami, T.
name: Hallen, Jonathan N.
name: Jaubert, Ludovic
name: Castelnovo, Claudio
name: Moessner, Roderich
name: Grigera, S. A.
name: Tennant, D. Alan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The spin ice compound Dy$_2$Ti$_2$O$_7$ is well-known to realise a three-dimensional Coulomb spin liquid with magnetically charged monopole excitations. Its fate at low temperatures, however, remains an intriguing open question. Based on a low-temperature analysis of the magnetic noise and diffuse neutron scattering under different cooling protocols, combined with extensive numerical modelling, we argue that upon cooling, the spins freeze into what may be termed a `structural magnetic glass', without an a priori need for chemical or structural disorder. Specifically, our model indicates the presence of frustration on two levels, first producing a near-degenerate constrained manifold inside which phase ordering kinetics is in turn frustrated. Our results suggest that spin ice Dy$_2$Ti$_2$O$_7$ provides one prototype of magnetic glass formation specifically, and a setting for the study of kinetically constrained systems more generally.
description: Paper+Sup. Info
Improving Kenya's Domestic Horticultural Production and Marketing System: Current Competitiveness, Forces of Change, and Challenges for the Future (Volume I: Horticultural Production)
Creators: name: Muendo, Kavoi Mutuku
name: Tschirley, David L.
name: Muendo, Kavoi Mutuku
name: Tschirley, David L.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Crop Production/Industries
subject: Food Security
subject: Food Policy
subject: Horticultural Production
subject: FOS: Agriculture, forestry and fisheries
subject: Kenya

description: The specific objectives of this Volume are to: estimate the share of domestic FFV production going to international and domestic markets; determine the share of imports from Tanzania and Uganda in Kenya’s horticultural markets; investigate the competitiveness of Kenya’s horticultural produce in local and regional markets; determine the current and likely future share of key marketing channels in Kenya’s domestic FFV marketing system, especially “modern” channels such as supermarkets and more traditional channels such as open air markets and kiosks; and recommend steps that should be taken to place Kenya’s domestic horticulture in a position to compete favorably in local and regional markets.
Field-enhanced diamagnetism in intense magnetic field in the pseudogap state of the cuprate $\rm Bi_2Sr_2CaCu_2O_{8+δ}
Creators: name: Wang, Yayu
name: Li, Lu
name: Naughton, M. J.
name: Gu, G. D.
name: Uchida, S.
name: Ong, N. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In hole-doped cuprates, Nernst experiments imply that the superconducting state is destroyed by spontaneous creation of vortices which destroy phase coherence. Using torque magnetometry on $\rm Bi_2Sr_2CaCu_2O_{8+δ}$, we uncover a field-enhanced diamagnetic signal $M$ above the transition temperature $T_c$ that increases with applied field to 32 Tesla and scales just like the Nernst signal. The magnetization results above $T_c$ distinguish $M$ from conventional amplitude fluctuations, and strongly support the vortex scenario for the loss of phase coherence at $T_c$.
description: 4 pages, 4 figures. Added 1 new figure panel (Fig. 1b). Extended discussion of susceptibility anisotropy and pseudogap state. 6 new new Refs. Deleted 5 old ones. Phys. Rev. Lett., in press
Asymmetric Stochastic Resetting: Modeling Catastrophic Events
Creators: name: Plata, Carlos A.
name: Gupta, Deepak
name: Azaele, Sandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In the classical stochastic resetting problem, a particle, moving according to some stochastic dynamics, undergoes random interruptions that bring it to a selected domain, and then, the process recommences. Hitherto, the resetting mechanism has been introduced as a symmetric reset about the preferred location. However, in nature, there are several instances where a system can only reset from certain directions, e.g., catastrophic events. Motivated by this, we consider a continuous stochastic process on the positive real line. The process is interrupted at random times occurring at a constant rate, and then, the former relocates to a value only if the current one exceeds a threshold; otherwise, it follows the trajectory defined by the underlying process without resetting. We present a general framework to obtain the exact non-equilibrium steady state of the system and the mean first passage time for the system to reach the origin. Employing this framework, we obtain the explicit solutions for two different model systems. Some of the classical results found in symmetric resetting such as the existence of an optimal resetting, are strongly modified. Finally, numerical simulations have been performed to verify the analytical findings, showing an excellent agreement.
description: 10 pages including: main text with 6 figures and appendices
Reise som giennem en Deel af Norge i de Aar 1773, 1774, 1775 paa Hans Majestets Kongens Bekens er giort og beskreven af ​​Gerhard Schøning: 1
Creators: name: Schøning, Gerhard
name: Schmidt, C.T
Publisher: name: Unknown
Year: 1850

description: Innhold: a. 5 legg, i alt 526 s. b. 4 legg, i alt 210, 225, 208, 77 s. c. Tegninger og tillegg. 14 s., 104 illustrasjoner, 91 fotografier, kopier av de samme tegninger.
description: Kopi etter 2827f 4to i Gl. kgl. samling ved Det Kongelige bibliotek. Avskrevet og supplert med notater ved C.T. Schmidt.
Supplementary Material for "Less is more: Slow-codon windows enhance eGFP mRNA resilience against RNA interference"
Creators: name: Müller, Judith Anna
name: Schwake, Gerlinde
name: Reiser, Anita
name: Woschée, Daniel
name: Alirezaeizanjani’, Zahra
name: Rädler, Joachim O.
name: Rudorf, Sophia
Publisher: name: The Royal Society
Year: 2025
Subjects: classificationCode: 310908
subject: Animal physiology - biophysics
classificationCode: 320802
subject: Human biophysics

description: Supplementary Figures to main document
Improving Kenya's Domestic Horticultural Production and Marketing System: Current Competitiveness, Forces of Change, and Challenges for the Future (Volume II: Horticultural Marketing)
Creators: name: Tschirley, David L.
name: Muendo, Kavoi Mutuku
name: Weber, Michael T.
name: Tschirley, David L.
name: Muendo, Kavoi Mutuku
name: Weber, Michael T.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Crop Production/Industries
subject: Food Security
subject: Food Policy
subject: Horticultural Marketing
subject: Kenya

description: The specific objectives of this Volume are to: estimate the share of domestic FFV production going to international and domestic markets; determine the share of imports from Tanzania and Uganda in Kenya’s horticultural markets; investigate the competitiveness of Kenya’s horticultural produce in local and regional markets; determine the current and likely future share of key marketing channels in Kenya’s domestic FFV marketing system, especially “modern” channels such as supermarkets and more traditional channels such as open air markets and kiosks; and recommend steps that should be taken to place Kenya’s domestic horticulture in a position to compete favorably in local and regional markets.
Abundances of Extremely Metal-Poor Star Candidates
Creators: name: Lai, D. K.
name: Bolte, M.
name: Johnson, J. A.
name: Lucatello, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present chemical abundances for 110 stars identified in objective-prism surveys as candidates to be very metal-poor. The abundances are derived from high S/N, intermediate-resolution spectra obtained with the Keck Observatory Echelle Spectrometer and Imager. An additional 25 stars with well-determined abundances ranging from [Fe/H]$=-1.5$ and -3.2 were observed and the results used to help calibrate our analysis and determine the accuracy of our abundance determinations. Abundances for the program stars were measured for Fe, Mg, Ca, Ti, Cr and Ba with an accuracy of approximately 0.3 dex. 53 of the stars in our sample have [Fe/H]<= -2, 22 have [Fe/H]<= -2.5 and 13 stars have [Fe/H]<= -2.9. Surprisingly, approximately one third of the sample is relatively metal rich with [Fe/H]>-1.5. In addition to identifying a number of extremely metal-poor stars, this study also shows that moderate-resolution spectra obtained with the Keck Echelle Spectrometer and Imager yield relatively accurate abundances for stars as faint as V=14 in modest exposure time (~20 minutes). This capability will prove useful if the so-far elusive stars at [Fe/H]
description: 60 pages, 10 figures, Accepted for publication in the AJ
Pentaquarks in the Jaffe-Wilczek approximation
Creators: name: Narodetskii, I. M.
name: Semay, C.
name: Silvestre-Brac, B.
name: Simonov, Yu. A.
name: Trusov, M. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The masses of $uudd\bar s $, $uudd\bar d$ and $uuss\bar d$ pentaquarks are evaluated in a framework of both the Effective Hamiltonian approach to QCD and spinless Salpeter using the Jaffe--Wilczek diquark approximation and the string interaction for the diquark--diquark--antiquark system. The pentaquark masses are found to be in the region above 2 GeV. That indicates that the Goldstone boson exchange effects may play an important role in the light pentaquarks. The same calculations yield the mass of $[ud]^2\bar c$ pentaquark $\sim$ 3250 MeV and $[ud]^2\bar b$ pentaquark $\sim$ 6509 MeV.
description: 14 pages, 2 tables, LaTeX2e. References corrected
Oscillating edge states in polariton topological insulators
Creators: name: Li, Chunyan
name: Kartashov, Yaroslav V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show that slow time-periodic variation of the external magnetic field applied to polariton topological insulator based on honeycomb array of microcavity pillars with pronounced TE-TM splitting results in oscillations of the edge states along the boundary of the insulator that are accompanied by slow transverse drift of the center of mass of the edge state along the boundary. The oscillations and drift are due to time-periodic variation of the sign of the instantaneous group velocity of the edge state with selected central Bloch momentum triggered by the variation of the Zeeman splitting in the external magnetic field. These oscillations are also accompanied by periodic exchange of norm between two polarization components of the edge state. Oscillating edge states survive despite the fact that magnetic field periodically vanishes resulting in closure of the topological gap in the instantaneous spectrum of the system. The direction of the drift and amplitude of oscillations of the edge state strongly and nonmonotonically depend on its initial central Bloch momentum.
description: 6 pages,6 figures; to be appear on Physical Review B
General Unitary TFD Formulation for Superstrings
Creators: name: Abdalla, M. C. B.
name: Gadelha, A. L.
name: Nedel, Daniel L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A generalization of the Thermo Field Dynamics (TFD) for fermionic degrees of freedom is proposed. Such a generalization follows a previous one where the SU(1,1) thermal group was used to obtain the closed bosonic string at finite temperature. The SU(2) thermal group is introduced to construct a general thermal Bogoliubov transformation to get the type IIB superstring at finite temperature.
description: 9 pages, revitex4, minor corrections. Contribution to Fourth International Winter Conference on Mathematical Methods in Physics, 09 - 13 August 2004, Centro Brasileiro de Pesquisas Fisicas (CBPF/MCT), Rio de Janeiro, Brazil
Tidal response from scattering and the role of analytic continuation
Creators: name: Creci, Gastón
name: Hinderer, Tanja
name: Steinhoff, Jan
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The tidal response of a compact object is a key gravitational-wave observable encoding information about its interior. This link is subtle due to the nonlinearities of general relativity. We show that considering a scattering process bypasses challenges with potential ambiguities, as the tidal response is determined by the asymptotic in- and outgoing waves at null infinity. As an application of the general method, we analyze scalar waves scattering off a nonspinning black hole and demonstrate that the low-frequency expansion of the tidal response reproduces known results for the Love number and absorption. In addition, we discuss the definition of the response based on gauge-invariant observables obtained from an effective action description, and clarify the role of analytic continuation for robustly (i) extracting the response and the physical information it contains, and (ii) distinguishing high-order post-Newtonian corrections from finite-size effects in a binary system. Our work is important for interpreting upcoming gravitational-wave data for subatomic physics of ultradense matter in neutron stars, probing black holes and gravity, and looking for beyond-standard-model fields.
description: v5, corrected typos, 29 pages, 2 figures
Partly Supersymmetric Grand Unification
Creators: name: Gherghetta, Tony
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is shown how grand unification can occur in models which are partly supersymmetric. The particle states which are composite do not contribute to the running of gauge couplings above the compositeness scale, while the elementary states contribute the usual large logarithmns. This introduces a new differential running contribution to the gauge couplings from partly composite SU(5) matter multiplets. In particular, for partly supersymmetric models, the incomplete SU(5) elementary matter multiplets restore gauge coupling unification even though the usual elementary gaugino and Higgsino contributions need not be present.
description: 14 pages, LaTeX
Improving Kenya's Domestic Horticultural Production and Marketing System: Current Competitiveness, Forces of Change, and Challenges for the Future (Volume III: Horticultural Research and Seed Sector Regulation in Kenya and Tanzania)
Creators: name: Muendo, Kavoi Mutuku
name: Tschirley, David L.
name: Muendo, Kavoi Mutuku
name: Tschirley, David L.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Crop Production/Industries
subject: Food Security
subject: Food Policy
subject: Horticultural Production
subject: FOS: Agriculture, forestry and fisheries
subject: Marketing System
subject: Kenya
subject: Tanzania

description: The specific objectives of this volume are to compare the influence of input systems on the performance of the horticultural sectors in Kenya and Tanzania, and to recommend steps that should be taken to place Kenya’s domestic horticulture in a position to compete favorably in local and regional markets.
Comment on "Constraints on proton structure from precision atomic physics measurements"
Creators: name: Friar, J. L.
name: Sick, I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We strongly disagree with the procedure used in a recent paper to extract the Zemach moment for hydrogen.
description: 1 page, 2 figures, revtex - submitted to Physical Review Letters
Light Dark Matter Scattering in Gravitational Wave Detectors
Creators: name: Lee, Chun-Hao
name: Nugroho, Chrisna Setyo
name: Spinrath, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present prospects for discovering dark matter scattering in gravitational wave detectors. The focus of this work is on light, particle dark matter with masses below 1 GeV/c$^{2}$. We investigate how a potential signal compares to typical backgrounds like thermal and quantum noise, first in a simple toy model and then using KAGRA as a realistic example. That shows that for a discovery much lighter and cooler mirrors would be needed. We also give some brief comments on space-based experiments and future atomic interferometers.
description: 26 pages, 5 figures; version published in Eur. Phys. J. C
Building better communities : gender roles, resources and gendered processes of urban regeneration in Cayo Hueso, Havana, Cuba
Creators: name: Fernandez, Ariadna Dawn
Publisher: name: University of British Columbia
Year: 2009

description: It has long been recognized that in many Latin American countries women and men play varied and different roles in urban-based community work. However, mainstream literature on urban regeneration initiatives rarely incorporate such gender analysis. The case of Cayo Hueso and its local planning body the Taller de Transformation is illustrative of the ways in which women (and men) mobilize resources and fellow residents to address the serious resource scarcities. The objectives of my research were to review the structure and operations of the Taller de Transformation and to study the role of women in the community and within the Taller. I sought to examine the local and national conditions that influence past and current urban development and regeneration initiatives in Cuba in general and in Cayo Hueso in particular. I also examined the key planning tools, processes and outcomes of urban regeneration initiatives used by the Taller in Cayo Hueso. I analyzed the gender dimension of urban regeneration initiatives, particularly how gender roles, identities and social networks have shaped the processes and outcomes of urban regeneration in fast changing communities like Cayo Hueso To conduct this investigation I used a combination of secondary and primary data gathering methods, including a review of the literature on urban regeneration and on women's mobilization. I reviewed secondary documents on urban and participatory policies and processes in Cuban history in general and Cayo Hueso in particular. A quantitative analysis of a survey conducted in Cayo Hueso in 1999 was also utilized. Primary qualitative information was also gathered through semi-structured interviews and focus group discussions. This case study supports the assertion that women play a crucial role in social reproduction and change. I found that gender roles, identities and social networks of women do shape the principles, mechanisms, strategies and processes of urban regeneration. The fact that women identified themselves as the "mothers" of the community means that the strategies and mechanisms adopted by them in regeneration initiatives reflect this role. These traditional roles and identities do not impair the regeneration process; they actually help to bring about desired and beneficial outcomes for the local community. Therefore, a serious consideration of gender roles, gendered use of resources and social networks make it possible to improve the design and implementation of sustainable plans and models for regeneration.
The primordial black holes solution to the cosmological monopole problem
Creators: name: Wang, Xin-Zhe
name: Deng, Can-Min
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, the pulsar timing array (PTA) collaborations, including CPTA, EPTA, NANOGrav, and PPTA, announced that they detected a stochastic gravitational wave background spectrum in the nHz band. This may be relevant to the cosmological phase transition suggested by some models. Magnetic monopoles and primordial black holes (PBHs), two unsolved mysteries in the universe, may also have their production related to the cosmological phase transition. Inspired by that, we revisit the model proposed by Stojkovic and Freese, which involves PBHs accretion to solve the cosmological magnetic monopole problem. We further develop it by considering the increase in the mass of the PBHs during accretion and taking the effect of Hawking radiation into account. With these new considerations, we find that solutions to the problem still exist within a certain parameter space. In {addition}, we also generalize the analysis to PBHs with {an} extended distribution in mass. This may be a more interesting scenario because PBHs that have accreted magnetic monopoles might produce observable electromagnetic signals if they are massive enough to survive in the late universe.
description: Eur. Phys. J. C (2024) 84:31
Bindings image
Creators: name: (:Unas)
Publisher: name: Unknown
Year: 0
Subjects: Frederik II
Anna Kathrine

description: Front cover: Stamp features the coat of arms of King Frederik II, King of Denmark and Norway (1534-1588). Back cover: Stamp features the coat of arms of Anna Catharine av Brandenburg (1575-1612). Below the coat of arms on the front cover: 'Insignia Friderici Zdanorvm Regis'.
description: Royal arms of King Frederik II (1559-1588) : the three lions and nine hearts of Denmark, the lion of Norway, the three crowns of Sweden, also symbolizing the Kalmar Union, and the lion and nine hearts of the Goths, quartered by the cross of the Dannebrog. In the base the wyvern of the Wends. On the inescutcheon the two lions of Schleswig, the nettle leaf of Holstein, the swan of Stormarn, and the horseman of the Ditmarshes. On top of that, an inescutcheon with the bars of Oldenburg and the cross of Delmenhorst. (Reference: Danish national coats of arms, Royal Danish Library)
description: Content: 4 books. Enchiridion controversiarum religionis ..., Tubingae, 1602; Enchiridion controversiarum, quas Augustanae confessionis theologi habent cum Calvinianis ..., Tubingae, 1604; Dogmata & argumenta suitarum praecipua de Papa ..., Witebergae, 1604; Controversiae inter Theologos Witebergenses ..., Witebergae, 1599
description: Same binding can also be found on Gunnerus HA Fol. 36. 42 x 27 cm, in worse condition.
Nucleation and growth in one dimension, part I: The generalized Kolmogorov-Johnson-Mehl-Avrami model
Creators: name: Jun, Suckjoon
name: Zhang, Haiyang
name: Bechhoefer, John
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Motivated by a recent application of the Kolmogorov-Johnson-Mehl-Avrami (KJMA) model to the study of DNA replication, we consider the one-dimensional version of this model. We generalize previous work to the case where the nucleation rate is an arbitrary function $I(t)$ and obtain analytical results for the time-dependent distributions of various quantities (such as the island distribution). We also present improved computer simulation algorithms to study the 1D KJMA model. The analytical results and simulations are in excellent agreement.
description: 9 pages, 9 figures
Hyperspectral imaging for dynamic thin film interferometry
Creators: name: Suja, Vineeth Chandran
name: Sentmanat, John
name: Hofmann, Gregory
name: Scales, Charles
name: Fuller, Gerald G
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Dynamic thin film interferometry is a technique used to non-invasively characterize the thickness of thin liquid films. Recovering the underlying thickness from the captured interferograms, unconditionally and automatically is still an open problem. Here we report a compact setup employing a snapshot hyperspectral camera and the related algorithms for the automated determination of thickness profiles of dynamic thin liquid films. The proposed technique is shown to recover film thickness profiles to within 100 nm of accuracy as compared to those profiles reconstructed through the manual color matching process. Subsequently, we discuss the characteristics and advantages of hyperspectral interferometry including the increased robustness against imagining noise as well as the ability to perform thickness reconstruction without considering the absolute light intensity information.
description: Under review in Scientific Reports (8 pages, 5 figures)
Competitiveness of Kenyan and Ugandan Maize Production: Challenges for the Future
Creators: name: Nyoro, James K.
name: Kirimi, Lilian
name: Jayne, Thomas S.
name: Nyoro, James K.
name: Kirimi, Lilian
name: Jayne, Thomas S.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Crop Production/Industries
subject: Food Security
subject: Food Policy
subject: Kenya
subject: Uganda
subject: Maize Production

description: The purpose of this study is to assess the costs of maize production in Kenya and Uganda, starting from the fact that there is no single “cost of production” for maize. Cost of production varies according to region, the type of technology package employed, farmers’ management practices, and the weather. In light of this, the study disaggregates cost of production into seven region/technology categories, five in Kenya and two in eastern Uganda, in order to compare the relative competitiveness of maize among these regions and technology packages. Variations in cost of production within each region/technology category reflect differences in farmer management practices and micro-variability in soils and rainfall.
PHYSICAL PROCESS CONTROL IN LASER METAL DEPOSITION TECHNOLOGY
Creators: name: Yu. N. Zavalov
name: A. V. Dubrov
name: P. S. Rodin
name: V. D. Dubrov
Publisher: name: figshare
Year: 2020
Subjects: subject: 91407 Pyrometallurgy
subject: FOS: Environmental engineering
subject: 20502 Lasers and Quantum Electronics
subject: FOS: Physical sciences

description: The article deals with the control modes of physical processes in the technology of laser metal deposition (LMD). The software and hardware implementation of the LMD process control system with laser power control is presented. The system operates in real time with a control cycle duration of 15 ms and allows one to adjust the laser power set in the controller program. The system can be used not only in laboratory or newly created installations, but also for integration into existing LMD systems. It is shown that the use of pulse-width modulation of the laser power allows one to control the shape of the deposited track. It is also shown that under certain parameters of power modulation, it is possible to increase the cooling rate of the melt while maintaining the track width.
Parsec-scale evolution of the gigahertz-peaked spectrum quasar PKS 0858-279
Creators: name: Kosogorov, N. A.
name: Kovalev, Y. Y.
name: Perucho, M.
name: Kovalev, Yu. A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We conducted multi-epoch, multi-frequency parsec-scale studies on the gigahertz-peaked spectrum quasar PKS 0858-279 with the Very Long Baseline Array (VLBA). Our observations on 2005-11-26 elucidated a weak core, characterized by an inverted spectrum, and a distinctly bent jet that exhibited a notable bright feature in its Stokes I emission. Through comprehensive analysis of polarization and spectral data, we inferred the formation of a shock wave within this feature, stemming from interactions with a dense cloud in the ambient medium. In this paper, VLBI-Gaia astrometry further reinforces the core identification. With a deep analysis of six additional VLBA epochs spanning from 2007 to 2018, we observed that while the quasar's parsec-scale structure remained largely consistent, there were discernible flux density changes. These variations strongly imply the recurrent ejection of plasma into the jet. Complementing our VLBA data, RATAN-600 observations of the integrated spectra suggested an interaction between standing and travelling shock waves in 2005. Moreover, our multi-epoch polarization analysis revealed a drastic drop in rotation measure values from 6000 rad/m^2 to 1000 rad/m^2 within a single year, attributable to diminishing magnetic fields and particle density in an external cloud. This change is likely instigated by a shock in the cloud, triggered by the cloud's interaction with the jet, subsequently prompting its expansion. Notably, we also observed a significant change in the magnetic field direction of the jet, from being perpendicular post its observed bend to being perpendicular prior to the bend - an alteration possibly induced by the dynamics of shock waves.
description: 14 pages, 10 figures, accepted for publication in MNRAS
Anomalous dimensions of monopole operators at the transitions between Dirac and topological spin liquids
Creators: name: Dupuis, Éric
name: Boyack, Rufus
name: Witczak-Krempa, William
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Monopole operators are studied in a large family of quantum critical points between Dirac and topological quantum spin liquids (QSLs): chiral and Z$_{2}$ QSLs. These quantum phase transitions are described by conformal field theories (CFTs): quantum electrodynamics in 2+1 dimensions with 2N flavors of two-component massless Dirac fermions and a four-fermion interaction. For the transition to a chiral spin liquid, it is the Gross-Neveu interaction (QED$_{3}$-GN), while for the transitions to Z$_{2}$ QSLs it is a superconducting pairing term with general spin/valley structure (generalized QED$_{3}$-Z$_{2}$GN). Using the state-operator correspondence, we obtain monopole scaling dimensions to sub-leading order in 1/N. For monopoles with a minimal topological charge q=1/2, the scaling dimension is 2N*0.26510 at leading-order, with the quantum correction being 0.118911(7) for the chiral spin liquid, and 0.102846(9) for the simplest Z$_{2}$ case (the expression is also given for a general pairing term). Although these two anomalous dimensions are nearly equal, the underlying quantum fluctuations possess distinct origins. The analogous result in QED$_{3}$ is also obtained and we find a sub-leading contribution of -0.038138(5), which differs slightly from the value first obtained in the literature. The scaling dimension of a QED$_{3}$-GN monopole with minimal charge is very close to the scaling dimensions of other operators predicted to be equal by a conjectured duality between QED$_{3}$-GN with 2N=2 flavors and the CP$^{1}$ model. Additionally, non-minimally charged monopoles on both sides of the duality have similar scaling dimensions. By studying the large-q asymptotics of the scaling dimensions in QED$_{3}$, QED$_{3}$-GN, and QED$_{3}$-Z$_{2}$GN we verify that the constant O(q$^{0}$) coefficient precisely matches the universal non-perturbative prediction for CFTs with a global U(1) symmetry.
description: 37 pages
Intrinsic spin current for an arbitrary Hamiltonian and scattering potential
Creators: name: Khaetskii, Alexander
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We have described electron spin dynamics in the presence of the spin-orbit interaction and disorder using the spin-density matrix method. Exact solution is obtained for an arbitrary 2D spin-orbit Hamiltonian and arbitrary smoothness of the disorder potential. Spin current depends explicitely on the disorder properties, namely the smoothness of the disorder potential, even in the ballistic limit when broadening by scattering is much smaller than the spin-orbit related splitting of the energy spectrum. In this sense universal intrinsic spin current does not exist.
description: LaTeX, 6 pages, 1 fig., Eqs.22,28 are corrected
Entanglement and factorized ground states in two-dimensional quantum antiferromagnets
Creators: name: Roscilde, Tommaso
name: Verrucchi, Paola
name: Fubini, Andrea
name: Haas, Stephan
name: Tognetti, Valerio
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Making use of exact results and quantum Monte Carlo data for the entanglement of formation, we show that the ground state of anisotropic two-dimensional S=1/2 antiferromagnets in a uniform field takes the classical-like form of a product state for a particular value and orientation of the field, at which the purely quantum correlations due to entanglement disappear. Analytical expressions for the energy and the form of such states are given, and a novel type of exactly solvable two-dimensional quantum models is therefore singled out. Moreover, we show that the field-induced quantum phase transition present in the models is unambiguously characterized by a cusp minimum in the pairwise-to-global entanglement ratio R, marking the quantum-critical enhancement of \emph{multipartite} entanglement. A detailed discussion is provided on the universality of the cusp in R as a signature of quantum critical behavior entirely based on entanglement.
description: 4 pages, 3 figures
Connectivity in One-Dimensional Soft Random Geometric Graphs
Creators: name: Wilsher, Michael
name: Dettmann, Carl P.
name: Ganesh, Ayalvadi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: In this paper, we study the connectivity of a one-dimensional soft random geometric graph (RGG). The graph is generated by placing points at random on a bounded line segment and connecting pairs of points with a probability that depends on the distance between them. We derive bounds on the probability that the graph is fully connected by analysing key modes of disconnection. In particular, analytic expressions are given for the mean and variance of the number of isolated nodes, and a sharp threshold established for their occurrence. Bounds are also derived for uncrossed gaps, and it is shown analytically that uncrossed gaps have negligible probability in the scaling at which isolated nodes appear. This is in stark contrast to the hard RGG in which uncrossed gaps are the most important factor when considering network connectivity.
Working-Age Adult Mortality and Primary School Attendance in Rural Kenya
Creators: name: Yamano, Takashi
name: Jayne, Thomas S.
name: Yamano, Takashi
name: Jayne, Thomas S.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Health Economics and Policy
subject: Labor and Human Capital
subject: HIV/AIDS
subject: Kenya
subject: Education

description: The rapid increase in adult mortality due to the AIDS epidemic in sub-Saharan Africa raises great concern about potential intergenerational effects on children. This article estimates the impact of AIDS-related adult mortality on primary school attendance in rural Kenya using a panel of 1,266 households surveyed in 1997, 2000, and 2002. The paper distinguishes between effects on boys’ and girls’ education to understand potential gender differences resulting from adult mortality. We also estimate how adult mortality affects child schooling before as well as after the death occurs. The paper also estimates the importance of households’ initial asset levels in influencing the relationship between adult mortality and child school attendance. We find that all of these distinctions are important when estimating the magnitude of the effects of adult mortality on child school attendance. The probability that girls in initially poor households will remain in school prior to the death of a working age adult in the household drops from roughly 88% to 55%. Boys in relatively poor households are less likely than girls to be in school after an adult death. By contrast, we find no clear effects on girls’ or boys’ education among relatively non-poor households, either before or after the timing of adult mortality in the household. We find a strong correlation between working-age adult mortality in our data and lagged HIV-prevalence rates at nearby sentinel survey sites. The evidence indicates that rising AIDS-related adult mortality in rural Kenya is adversely affecting primary school attendance among the poor. However, these results measure only short-term impacts. Over the longer run, whether school attendance in afflicted household rebounds or deteriorates further is unknown.
Deuterium fractionation in cold dense cores in the low-mass star forming region L1688
Creators: name: Petrashkevich, I. V.
name: Punanova, A. F.
name: Caselli, P.
name: Sipilä, O.
name: Pineda, J. E.
name: Friesen, R. K.
name: Korotaeva, M. G.
name: Vasyunin, A. I.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences
subject: J.2
subject: 70F15 (Primary)

description: In this work, we study deuterium fractionation in four starless cores in the low-mass star-forming region L1688 in the Ophiuchus molecular cloud. We study how the deuterium fraction ($R_D$) changes with environment, compare deuteration of ions and neutrals, core centre and its envelope, and attempt to reproduce the observed results with a gas-grain chemical model. We chose high and low gas density tracers to study both core centre and the envelope. With the IRAM 30m antenna, we mapped N$_2$H$^+$(1-0), N$_2$D$^+$(1-0), H$^{13}$CO$^+$ (1-0) and (2-1), DCO$^+$(2-1), and $p$-NH$_2$D(1$_{11}$-1$_{01}$) towards the chosen cores. The missing $p$-NH$_3$ and N$_2$H$^+$(1-0) data were taken from the literature. To measure the molecular hydrogen column density, dust and gas temperature within the cores, we used the Herschel/SPIRE dust continuum emission data, the GAS survey data (ammonia), and the COMPLETE survey data to estimate the upper limit on CO depletion. We present the deuterium fraction maps for three species towards four starless cores. Deuterium fraction of the core envelopes traced by DCO$^+$/H$^{13}$CO$^+$ is one order of magnitude lower ($\sim$0.08) than that of the core central parts traced by the nitrogen-bearing species ($\sim$0.5). Deuterium fraction increases with the gas density as indicated by high deuterium fraction of high gas density tracers and low deuterium fraction of lower gas density tracers and by the decrease of $R_D$ with core radii, consistent with the predictions of the chemical model. Our model results show a good agreement with observations for $R_D$(N$_2$D$^+$/N$_2$H$^+$) and R$_D$(DCO$^+$/HCO$^+$) and underestimate the $R_D$(NH$_2$D/NH$_3$).
description: 30 pages with 22 figures, accepted for publication in MNRAS
Wild October Jones
Creators: name: Eotvos, Melody
Publisher: name: The University of Melbourne
Year: 2024
Subjects: classificationCode: 360302
subject: Music composition and improvisation

description: Several summers ago (which was actually winter in Australia) I spent some time in Melbourne. I was at one of my first record fairs and happened to be curiously browsing through several albums of playing cards as a distraction while a friend finished shopping. They were rather special cards because of the particular edition and 'frontispiece' each had. So, I was flipping through pages and pages of these cards and then one suddenly jumped out at me. It was a reproduction of a beautiful painting that depicted a train passing a horse-carriage at full speed, and the carriage halting to avoid a collision, and a young woman falling off the back of the carriage. The whole image has a very warped and animated perspective to it. I bought that single card there and then for $3. Now, several years later I found it while cleaning out a box of souvenirs I'd gathered over the past 5 years or so, and decided to research it a little. After some intensive googling I discovered the painting belonged to an Indiana artist Thomas Hart Benton, and that we have several of his works throughout the IU Bloomington campus. For me this was too serendipitous to ignore and I busily set about writing a piece based on this very painting, Wreck of Old '97.
Table 1; Figures 1–8. The age of the Sääksjärvi impact structure (Finland): reconciling the timing of small impacts in crystalline basement with that of regional basin development
Creators: name: Kenny, Gavin G.
name: Mänttäri, Irmeli
name: Schmieder, Martin
name: Whitehouse, Martin J.
name: Nemchin, Alexander A.
name: Bellucci, Jeremy J.
name: Merle, Renaud E.
Publisher: name: Geological Society of London
Year: 2020
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary data: Table 1 and Figures 1–8