cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dual Linearised Gravity in Arbitrary Dimensions
Creators: name: M, Ajith. K.
name: Harikumar, E.
name: Sivakumar, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct dual formulation of linearised gravity in first order tetrad formalism in arbitrary dimensions within the path integral framework following the standard duality algorithm making use of the global shift symmetry of the tetrad field. The dual partition function is in terms of the (mixed symmetric) tensor field $Φ_{[ν_{1}ν_{2}...ν_{d-3}]ν}$ in {\it frame-like} formulation. We obtain in d-dimensions the dual Lagrangian in a closed form in terms of field strength of the dual frame-like field. Next by coupling a source with the (linear) Riemann tensor in d-dimensions, dual generating functional is obtained. Using this an operator mapping between (linear) Riemann tensor and Riemann tensor corresponding to the dual field is derived and we also discuss the exchange of equations of motion and Bianchi identity.
description: 14 pages, typos corrected, Published version: Class. Quantum Grav. 22(2005)5385
Developing countries and the right to informed decision-making : failures of the Cartagena Protocol on Biosafety
Creators: name: Keenan, Kelly Patricia
Publisher: name: University of British Columbia
Year: 2009

description: The international community has recently responded to the need'for an instrument that regulates the rapidly evolving world of agricultural biotechnology. After four difficult years of negotiation, the Cartagena Protocol on Biosafety to the Convention on Biological Diversity was adopted in January 2000. This agreement regulates the transboundary transfer of genetically modified organisms intended for human consumption, animal feed, processing and introduction into the environment. The Protocol entered into force on September 11, 2003 and now has 125 state Parties. The Protocol was an initiative of developing countries. Yet this thesis argues that the Protocol does not adequately address developing country concerns because the mechanism of informed decision-making upon which it is based is flawed. The Protocol adopts a narrow conception of developing country interests and, as a consequence, provides inadequate information and insufficient decision-making powers to decisionmakers in importing (primarily developing) states. This thesis elaborates upon developing country interests and outlines some of the cultural, social, economic and historical grounds upon which they are based. Primarily, this involves a consideration of developed country policies that have impacted food security in the developing world and have played a role in shaping developing country attitudes toward agricultural biotechnology. Developing country concerns and interests are also outlined in a detailed negotiating history of the Protocol. This history focuses on the divergent attitudes of developed and developing countries and the significant conflicts that arose between these two groups of states. The manner in which these conflicts are reflected in the final text is also investigated. Finally, this thesis provides a critique of the Protocol with a particular focus on the role of informed decision-making within the agreement. Although informed decisionmaking should serve as the foundation of the Protocol, this principle was significantly eroded in the final text of the agreement. Importing (primarily developing) states are provided with inadequate information and insufficient decision-making powers. Informed decision-making is constrained to such an extent as to make it ineffective as a legal regulatory mechanism.
Introduction to the Random Matrix Theory: Gaussian Unitary Ensemble and Beyond
Creators: name: Fyodorov, Yan V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: These lectures provide an informal introduction into the notions and tools used to analyze statistical properties of eigenvalues of large random Hermitian matrices. After developing the general machinery of orthogonal polynomial method, we study in most detail Gaussian Unitary Ensemble (GUE) as a paradigmatic example. In particular, we discuss Plancherel-Rotach asymptotics of Hermite polynomials in various regimes and employ it in spectral analysis of the GUE. In the last part of the course we discuss general relations between orthogonal polynomials and characteristic polynomials of random matrices which is an active area of current research.
description: 39 pages, 10 figures. These are lectures at the Isaak Newton Institute Summer School (Cambridge, 2004)
Controlling for time-dependent confounding using marginal structural models
Creators: name: Fewell, Zoe
name: Hernan, Miguel A.
name: Wolfe, Frederick
name: Tilling, Kate
name: Choi, Hyon
name: Sterne, Jonathan A.C.
name: Fewell, Zoe
name: Hernan, Miguel A.
name: Wolfe, Frederick
name: Tilling, Kate
name: Choi, Hyon
name: Sterne, Jonathan A.C.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Research Methods/ Statistical Methods
subject: marginal structural models
subject: causal models
subject: weighted regression
subject: survival analysis
subject: logistic regression
subject: confounding

description: Longitudinal studies in which exposures, confounders, and outcomes are measured repeatedly over time have the potential to allow causal inferences about the effects of exposure on outcome. There is particular interest in estimating the causal effects of medical treatments (or other interventions) in circumstances in which a randomized controlled trial is difficult or impossible. However, standard methods for estimating exposure effects in longitudinal studies are biased in the presence of time-dependent confounders affected by prior treatment. This article describes the use of marginal structural models (described by Robins, Hernán, and Brumback [2000]) to estimate exposure or treatment effects in the presence of time-dependent confounders affected by prior treatment. The method is based on deriving inverse-probability-of-treatment weights, which are then used in a pooled logistic regression model to estimate the causal effect of treatment on outcome. We demonstrate the use of marginal structural models to estimate the effect of methotrexate on mortality in persons suffering from rheumatoid arthritis.
Spin current through a tunnel junction
Creators: name: Braun, Matthias
name: König, Jürgen
name: Martinek, Jan
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We derive an expression for the spin-current through a tunnel barrier in terms of many-body Green's functions. The spin current has two contributions. One can be associated with angular-momentum transfer by spin-polarized charge currents crossing the junction. If there are magnetic moments on both sides of the tunnel junction, due to spin accumulation or ferromagnetic ordering, then there is a second contribution related to the exchange coupling between the moments.
description: 5 pages, 1 figure, submitted to Superlattices and Microstructures
Coherent Waveform Consistency Test for LIGO Burst Candidates
Creators: name: Cadonati, L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The burst search in LIGO relies on the coincident detection of transient signals in multiple interferometers. As only minimal assumptions are made about the event waveform or duration, the analysis pipeline requires loose coincidence in time, frequency and amplitude. Confidence in the resulting events and their waveform consistency is established through a time-domain coherent analysis: the r-statistic test. This paper presents a performance study of the r-statistic test for triple coincidence events in the second LIGO Science Run (S2), with emphasis on its ability to suppress the background false rate and its efficiency at detecting simulated bursts of different waveforms close to the S2 sensitivity curve.
description: 11 pages, 9 figures. Submitted to the Proceedings of the 8th Gravitational Wave Data Analysis Workshop, in Classic and Quantum Gravity
Confidence intervals for the kappa statistic
Creators: name: Reichenheim, Michael E.
name: Reichenheim, Michael E.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Research Methods/ Statistical Methods
subject: kapci
subject: reliability
subject: kappa statistic
subject: confidence intervals

description: The command kapci calculates 100(1 - α)% confidence intervals for the kappa statistic using an analytical method in the case of dichotomous variables or bootstrap for more complex situations. For instance, kapci allows estimating CI for polychotomous variables using weighted kappa or for cases in which there are more than 2 raters/replications.
Multiscale Microtubule Dynamics in Active Nematics
Creators: name: Lemma, Linnea M.
name: Norton, Michael M.
name: Tayar, Alexandra M.
name: DeCamp, Stephen J.
name: Aghvami, S. Ali
name: Fraden, Seth
name: Hagan, Michael F.
name: Dogic, Zvonimir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In microtubule-based active nematics, motor-driven extensile motion of microtubule bundles powers chaotic large-scale dynamics. We quantify the interfilament sliding motion both in isolated bundles and in a dense active nematic. The extension speed of an isolated microtubule pair is comparable to the molecular motor stepping speed. In contrast, the net extension in dense 2D active nematics is significantly slower; the interfilament sliding speeds are widely distributed about the average and the filaments exhibit both contractile and extensile relative motion. These measurements highlight the challenge of connecting the extension rate of isolated bundles to the multi-motor and multi-filament interactions present in a dense 2D active nematic. They also provide quantitative data that is essential for building multiscale models.
Exploring Perceptions of Algorithmic Bias in Video Interviewing Software: The Importance of AI Hiring Education
Creators: name: Fister, Theresa
name: Thiruvathukal, George K.
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 460299
subject: Artificial intelligence not elsewhere classified
classificationCode: 500199
subject: Applied ethics not elsewhere classified
classificationCode: 461202
subject: Empirical software engineering

description: Many employers across various fields are incorporating artificial intelligence into their hiring processes. Existing research suggests that although artificial intelligence is often perceived as neutral by its advocates, it can inadvertently perpetuate both implicit and explicit biases present in the engineers and designers responsible for its development through the machine learning process. To delve deeper into this issue, we conducted a research study involving 25 recent graduates from 12 different industries. Our aim was to gain insights into the workings of AI video interviewing software and to understand the reactions of recent graduates who have used this technology. Considering the pivotal role of computing and technology education in shaping future careers, we believe that our investigation can assist educators in better preparing their students for a workforce that increasingly relies on artificial intelligence, while also being mindful of its potential biases, particularly in the context of hiring.Submitted to RESPECT 2024.
Alexandrov meets Kirszbraun
Creators: name: Alexander, Stephanie
name: Kapovitch, Vitali
name: Petrunin, Anton
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C23 53C45

description: We give a simplified proof of the generalized Kirszbraun theorem for Alexandrov spaces, which is due to Lang and Schroeder. We also discuss related questions, both solved and open.
description: 21 pages, 5 figures
Quantum Leaks
Creators: name: Marklof, Jens
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81Q50

description: We show that eigenfunctions of the Laplacian on certain non-compact domains with finite area may localize at infinity--provided there is no extreme level clustering--and thus rule out quantum unique ergodicity for such systems. The construction is elementary and based on `bouncing ball' quasimodes whose discrepancy is proved to be significantly smaller than the mean level spacing.
Analisis-Penggunaan-Lahan-Tertinggi-Dan-Terbaik-Pada-Lahan-Di-Jalan-Kramat-1-Kebayoran-Lama-Aset-Kementerian-Pupr
Creators: name: Achmad Syafii
Publisher: name: figshare
Year: 2020
Subjects: subject: 90599 Civil Engineering not elsewhere classified
subject: FOS: Civil engineering
subject: 120599 Urban and Regional Planning not elsewhere classified
subject: FOS: Social and economic geography

description: Alternatif penggunaan lahan didapat dari kajian literatur dan persepsi kecenderungan pelaku pengguna lahan yakni Kementerian PUPR dan Dinas Tata Kota DKI Jakarta. Kriteria yang dipertimbangkan dalam menganalisis alternative penggunaan lahan tersebut adalah dengan mempertimbangkan prinsip penggunaan tertinggi dan terbaik yaitu secara hukum diizinkan, secara fisik memungkinkan dan secara finansial layak serta berproduksi secara maksimal. Uji kelayakan hukum dilakukan dengan mengacu pada RTRW, RDTR dan peraturan zonasi DKI Jakarta 2030. Uji kelayakan fisik dilakukan pada aspek ukuran, bentuk, kemiringan lahan, aksesibilitas dan ketersediaan fasilitas publik. Uji kelayakan finansial dilakukan dengan menghitung arus kas (NPV) dan tingkat pengembaliannya (IRR). NPV dihitung berdasarkan investasi (biaya teknis bangunan), pendapatan bersih dari sewa dan biaya operasional. Sedangkan IRR dianggap efisien jika lebih dari tingkat pengembalian minimum (MARR) yang ditetapkan sebesar 12,45%. Selanjutnya untuk mengukur produktivitas maksimal digunakan metode penyisaan tanah. Yakni selisih nilai properti (tanah dan bangunan) dengan nilai investasi (biaya teknis bangunan). Nilai properti didapat berdasarkan rumus V=I/r, pendapatan bersih dibagi dengan tingkat kapitalisasi/tingkat pengembalian minimum (MARR).
A Systematic Assessment of National, Regional and Global Levels and Trends in the Sex Ratio at Birth and Identification of Countries with Outlying Levels
Creators: name: Chao, Fengqing
name: Alkema, Leontine
name: Gerland, Patrick
Publisher: name: figshare
Year: 2020
Subjects: subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences
subject: 160399 Demography not elsewhere classified
subject: FOS: Sociology
subject: 10401 Applied Statistics
subject: FOS: Mathematics

description: This paper was presented on Mar 31st, 2016, in the 2016 Population Association of America Annual Meeting, Washington, DC, USA.
Under normal circumstances, the sex ratio at birth (SRB) has been reported to vary between 1.04 and 1.07. But gender discrimination and other factors associated with the SRB can result in different SRB levels. While SRB estimates have been published for various countries and periods, a systematic assessment of SRBs for all countries over time using all available data and reproducible estimation methods has not been reported to date. In this paper, we estimated country-specific SRBs for 212 countries and areas from 1990 to 2013 using a Bayesian hierarchical time series model and assessed the uncertainty in SRBs. The analysis is based on an extensive database with national-level data, including data from vital registration systems, international and national survey programs. We present results for countries and areas and identify country-years with SRBs which differ significantly from estimates that are typical for the country-specific region.
Confidence intervals for the variance component of random-effects linear models
Creators: name: Bottai, Matteo
name: Orsini, Nicola
name: Bottai, Matteo
name: Orsini, Nicola
Publisher: name: Unknown
Year: 2004
Subjects: subject: Research Methods/ Statistical Methods
subject: xtvc
subject: variance components
subject: confidence intervals
subject: score test
subject: random-effects linear models

description: We present the postestimation command xtvc to provide confidence intervals for the variance components of random-effects linear regression models. This command must be used after xtreg with option mle. Confidence intervals are based on the inversion of a score-based test (Bottai 2003).
Boolean logit and probit in Stata
Creators: name: Braumoeller, Bear F.
name: Braumoeller, Bear F.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Research Methods/ Statistical Methods
subject: mlboolean
subject: dichotomous dependent variable
subject: Boolean
subject: logit
subject: probit
subject: multiple causal paths
subject: complexity
subject: random utility

description: This paper introduces new statistical models, Boolean logit and probit, that allow researchers to model binary outcomes as the results of Boolean interactions among independent causal processes. Each process (or “causal path”) is modeled as the unobserved outcome in a standard logit or probit equation, and the dependent variable is modeled as the observed product of their Boolean interaction. Up to five causal paths can be modeled, in any combination—A and B and C produce Y, A and (B or [C and D]) produce Y, etc.
Localized microwave resonances in strained SrTiO3 thin films
Creators: name: Irvin, Patrick
name: Haeni, J. H.
name: Schlom, Darrell G.
name: Levy, Jeremy
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The frequency-dependent polar dynamics of strained SrTiO3 films grown on DyScO3 are investigated using time-resolved confocal scanning optical microscopy. Microwave frequency electric fields are synchronized with a mode-locked laser and applied in-plane to the sample, while the temporal response is probed optically. Local spectroscopic information is obtained with <1 um spatial resolution over the frequency range 2-4 GHz. Investigation of the SrTiO3/DyScO3 system reveals resonances that are localized both in space and in frequency.
description: 4 pages, 4 figures
From the help desk: Seemingly unrelated regression with unbalanced equations
Creators: name: McDowell, Allen
name: McDowell, Allen
Publisher: name: Unknown
Year: 2004
Subjects: subject: Research Methods/ Statistical Methods
subject: SUR
subject: seemingly unrelated regression
subject: unbalanced equations
subject: generalized estimating equations

description: This article demonstrates how to estimate the parameters of a system of seemingly unrelated regressions when the equations are unbalanced, i.e., when the equations have an unequal number of observations. With estimators that require the data to be in wide format, such as Stata’s sureg, the equations must be balanced. Any additional observations that are available for some equations, but not for all, are discarded, potentially resulting in a loss of efficiency. Reshaping and scaling the data allows us to use Stata’s xtgee command to fit the model and obtain estimates utilizing all the available data. The resulting estimator is potentially more efficient when the equations are unbalanced.
An analytic invariant of G_2 manifolds
Creators: name: Crowley, Diarmuid
name: Goette, Sebastian
name: Nordström, Johannes
Publisher: name: arXiv
Year: 2015
Subjects: subject: Geometric Topology (math.GT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 57R20 (Primary) 53C29, 58J28 (Secondary)

description: We prove that the moduli space of holonomy G_2-metrics on a closed 7-manifold is in general disconnected by presenting a number of explicit examples.
 We detect different connected components of the G_2-moduli space by defining an integer-valued analytic refinement of the nu-invariant, a Z/48-valued defect invariant of G_2-structures on a closed 7-manifold introduced by the first and third authors. The refined invariant is defined using eta invariants and Mathai-Quillen currents on the 7-manifold and we compute it for twisted connected sums à la Kovalev, Corti-Haskins-Nordström-Pacini and extra-twisted connected sums as constructed by the second and third authors. In particular, we find examples of G_2-holonomy metrics in different components of the moduli space where the associated G_2-structures are homotopic and other examples where they are not.
description: 35 pages, 2 figures. v5: Added more explanation in section 4, minor other clarifications
Clinical Profile and Antibiotic Resistance of Aeromonas Species Isolates from Invasive Diarrhoeal Patients.
Creators: name: Ara, Rifat
name: Houpt, Eric R.
name: Rashidul Haque
name: Taniuchi, Mami
name: Alam, Masud
name: Tahmeed Ahmed
name: ASG Faruque
Publisher: name: figshare
Year: 2020
Subjects: subject: 110303 Clinical Microbiology
subject: FOS: Clinical medicine

description: This poster presentation was published in 15th Asian Conference of Diarrhoeal Disease and Nutrition (ASCODD 2020)
Investigating the discursive interplay of discourses of (new) multiliteracies : a Bakhtinian perspective
Creators: name: Tabyanian, Shahbaz
Publisher: name: University of British Columbia
Year: 2009

description: Information and communication technologies (ICTs) have given rise to many distinct discourses in the field of literacy studies. The present study examined the discursive interplay between two of these discourses, namely the practical discourses of those who see themselves as empowered by ICTs and the theoretical discourses of theory and research literature on the notions of multiliteracies. Drawing on the emergent discourses from the interview data, this study explored the practitioners' underlying beliefs and their assumptions about technology-mediated new multiliteracies as opposed to traditional print-based literacy. As such the study also argued for a sustainable dialogue between the discourses of practice and discourses of theory and research, suggesting that the discursive interplay between these two discourse communities would contribute to the application of the complex theoretical notions to multiliteracy pedagogy. Employing a qualitative approach, the study drew on Bakhtin's (1986) notion of primary/secondary genres to depict the relevance of the notions of discourse in arriving at the underlying assumptions about the nature of multiliteracies and its implications. This study was broadly framed within a critical social research perspective (Fairclough, 2003). The notion of multiliteracies was explored from the standpoint of the New London Group (1996). Grounded Theory procedures (Strauss & Corbin, 1998) were also employed to identify major themes in the data, while general content analysis method was used to interpret the interview data. The main question that guided this investigation was as follows: How do expert practitioners' perceptions of new multiliteracies and their implications map onto their practices with new multiliteracies? The findings of this study pointed to the practitioners' willingness to implement new approaches in their literacy practices. Moreover, these findings highlighted the importance of a sustainable dialogue between the discourses of theory and practice to enhance literacy educators' pedagogical choices. The researcher hopes that the findings of this study contribute to the future teacher education policy and curriculum development in such a way that current pedagogical practices are expanded to include multiple literacies.
Gender Differences in Infant and Child Mortality: Estimation of Sex-Specific Mortality and an Assessment of Excess Female Deaths
Creators: name: Alkema, Leontine
name: Chao, Fengqing
name: Sawyer, Cheryl Chriss
Publisher: name: figshare
Year: 2020
Subjects: subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences
subject: 160399 Demography not elsewhere classified
subject: FOS: Sociology
subject: 10401 Applied Statistics
subject: FOS: Mathematics

description: This conference paper was presented in the Population Association of America Annual Meeting 2014 Conference, Boston, MA, USA.
Monitoring of sex-specific mortality up to age five for all countries is challenging because of issues with data availability and quality. Moreover, sex ratios are expected to vary with under-five mortality, which makes it challenging to define "expected levels" and pinpoint to countries with outlying levels or trends, e.g. because of deprivation of girls' access to health care or proper nutrition. We developed a Bayesian model to estimate sex ratios for infant, child and under-five mortality for all countries. In addition, we estimated the relative difference between national sex ratios and expected sex ratios based on the global relation between mortality and sex ratios. Based on these relative differences, we identified countries with outlying sex ratios and assessed excess female mortality.
Speaking Stata: Graphing model diagnostics
Creators: name: Cox, Nicholas J.
name: Cox, Nicholas J.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Research Methods/ Statistical Methods
subject: modeldiag
subject: anovaplot
subject: indexplot
subject: ofrtplot
subject: ovfplot
subject: qfrplot
subject: racplot
subject: rdplot
subject: regplot
subject: rhetplot
subject: rvfplot2
subject: rvlrplot
subject: rvpplot2
subject: graphics
subject: diagnostics
subject: regression
subject: generalized linear models
subject: analysis of variance

description: Plotting diagnostic information calculated from residuals and fitted values is a long-standard method for assessing models and seeking ways of improving them. This column focuses on the statistical mainstream defined by regression models for continuous responses, treated in a broad sense to include (for example) generalized linear models. After some comments on the history of such ideas (and even their anthropology and psychology), the commands available in official Stata are reviewed, and a modeldiag package is introduced. A detailed example on fuelwood yield from fallow areas in Nigeria illustrates a variety of general points and specific tips.
Dark Energy Probes in Light of the CMB
Creators: name: Hu, Wayne
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: CMB observables have largely fixed the expansion history of the universe in the deceleration regime and provided two self-calibrated absolute standards for dark energy studies: the sound horizon at recombination as a standard ruler and the amplitude of initial density fluctuations. We review these inferences and expose the testable assumptions about recombination and reionization that underly them. Fixing the deceleration regime with CMB observables, deviations in the distance and growth observables appear most strongly at z=0 implying that accurate calibration of local and CMB standards may be more important than redshift range or depth. The single most important complement to the CMB for measuring the dark energy equation of state at z~0.5 is a determination of the Hubble constant to better than a few percent. Counterintuitively, with fixed fractional distance errors and relative standards such as SNe, the Hubble constant measurement is best achieved in the high redshift deceleration regime. Degeneracies between the evolution and current value of the equation of state or between its value and spatial curvature can be broken if percent level measurement and calibration of distance standards can be made at intermediate redshifts or the growth function at any redshift in the acceleration regime. We compare several dark energy probes available to a wide and deep optical survey: baryon features in galaxy angular power spectra and the growth rate from galaxy-galaxy lensing, shear tomography and the cluster abundance.
description: 18 pages, 5 figures
Wer ist Matthäus? Eine neue Deutung von Caravaggios ‚Berufung des heiligen Matthäus‘ aus der Contarelli- Kapelle
Creators: name: Müller, Jürgen
Publisher: name: Universität Regensburg
Year: 2021
Subjects: subject: 700 Künste, Bildende Kunst allgemein

description: Seit Andreas Prater in seinem Aufsatz von 1985 fragte "Wer ist Matthäus?" und den jungen Geld zählenden Mann als den Evangelisten identifizierte, herrscht in der Forschung eine hitzige Debatte. Im folgenden Aufsatz wird zum ersten Mal die druckgrafische Vorlage gezeigt, die für Caravaggios Darstellung der 'Berufung des heiligen Matthäus' vorausgesetzt werden muss, und darüber hinaus wird eine bis vor kurzem unentdeckte Motivübernahme von Michelangelo für Caravaggios Gemälde aufgezeigt. Diese ikonografischenEntdeckungen bilden die Grundlage einer umfassenden Neuinterpretation, die im Gegensatz zu bestehenden Analysen von einer politischen Interpretation begleitet wird und den Maler als Kritiker der gegenreformatorischen Bildfrömmigkeit ausweist.
Statistical mechanics of base stacking and pairing in DNA melting
Creators: name: Ivanov, Vassili
name: Zeng, Yan
name: Zocchi, Giovanni
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We propose a statistical mechanics model for DNA melting in which base stacking and pairing are explicitly introduced as distinct degrees of freedom. Unlike previous approaches, this model describes thermal denaturation of DNA secondary structure in the whole experimentally accessible temperature range. Base pairing is described through a zipper model, base stacking through an Ising model. We present experimental data on the unstacking transition, obtained exploiting the observation that at moderately low pH this transition is moved down to experimentally accessible temperatures. These measurements confirm that the Ising model approach is indeed a good description of base stacking. On the other hand, comparison with the experiments points to the limitations of the simple zipper model description of base pairing.
description: 13 pages with figures
Dipole-dipole interaction driven antiblockade of two Rydberg atoms
Creators: name: Su, Shi-Lei
name: Li, Weibin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Resonant laser excitation of multiple Rydberg atoms are prohibited, leading to Rydberg blockade, when the long-range van der Waals interactions are stronger than the laser-atom coupling. Rydberg blockade can be violated, i.e. simultaneous excitation of more than one Rydberg atoms, by off-resonant laser excitation, causing an excitation antiblockade. Rydberg antiblockade gives rise to strongly correlated many-body dynamics and spin-orbit coupling, and also finds quantum computation applications. Instead of commonly used van der Waals interactions, we investigate antiblockade dynamics of two Rydberg atoms interacting via dipole-dipole exchange interactions. We study typical situations in current Rydberg atoms experiments, where different types of dipole-dipole interactions can be achieved by varying Rydberg state couplings. Effective Hamiltonian governing underlying antiblockade dynamics is derived. We illustrate that geometric gates can be realized with the Rydberg antiblockade which is robust against decay of Rydberg states. Our study may stimulate new experimental and theoretical exploration of quantum optics and strongly interacting many-body dynamics with Rydberg antiblockade driven by dipole-dipole interactions.
description: 14 pages, 10 figures
How to Estimate Custom Machinery Rates
Creators: name: Ibendahl, Gregory A.
name: Halich, Greg
name: Ibendahl, Gregory A.
name: Halich, Greg
Publisher: name: Unknown
Year: 2010
Subjects: Agribusiness
Production Economics

description: Specialization in agriculture, along with larger farm sizes and bigger equipment, has resulted in more custom machinery work being conducted on farms. Often, there is limited data about the current custom rate. The Mississippi State Budget Generator (MSBG) is a tool that uses a cost approach to allocating machinery cost on a per acre basis and can be used in situations where custom rates are not well known. When compared to actual custom work surveys, the MSBG provides rates that are lower than the survey results. One explanation is that the MSBG does not include any built-in profit.
TEACHING MATERIALS ON EXTRAJUDICIAL SETTLEMENT NEGOTIATION
Creators: name: MURILLO DE OLIVEIRA DIAS
Publisher: name: figshare
Year: 2020
Subjects: subject: 150314 Small Business Management
subject: FOS: Economics and business

description: This article addressed an extrajudicial settlement negotiation case in Brazil, aiming at improving the negotiation skills of lawyers through a two-party role-play simulation. Therefore, this work sheds more light on the distributive negotiations and presents a complete set of teaching materials, useful for scholars, instructors, managers, lawyers, and other practitioners. The subject was chosen because of replicability in business and lawyering scenarios. This case was designed mainly to prevent the conflict escalation that generally ends in the Court of law. Key findings pointed out the necessity of improving negotiation skills, such as understanding the other party's underlying interests, value creation, and joint factfinding to achieve mutual benefit deals. Further implications suggest that the current teaching case may be useful for developing negotiation skills, which can also end in Court. Discussion and future research recommendations comprise the present investigation.
The Chemical Properties of Milky Way and M31 Globular Clusters: II. Stellar Population Model Predictions
Creators: name: Beasley, Michael A.
name: Brodie, Jean P.
name: Strader, Jay
name: Forbes, Duncan A.
name: Proctor, Robert N.
name: Barmby, Pauline
name: Huchra, John P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We derive ages, metallicities and [alpha/Fe] ratios from the integrated spectra of 23 globular clusters in M31, by employing multivariate fits to two stellar population models. In parallel we analyze spectra of 21 Galactic globular clusters in order to facilitate a differential analysis. We find that the M31 globular clusters separate into three distinct components in age and metallicity. We identify an old, metal-poor group (7 clusters), an old, metal-rich group (10 clusters) and an intermediate age (3-6 Gyr), intermediate-metallicity ([Z/H]~-1) group (6 clusters). This third group is not identified in the Galactic globular cluster sample. The majority of globular clusters in both samples appear to be enhanced in alpha-elements, the degree of enhancement being model-dependent. The intermediate age GCs appear to be the most enhanced, with [alpha/Fe]~0.4. These clusters are clearly depressed in CN with respect to the models and the bulk of the M31 and Milky Way sample. Compared to the bulge of M31, M32 and NGC 205, these clusters most resemble the stellar populations in NGC 205 in terms of age, metallicity and CN abundance. We infer horizontal branch morphologies for the M31 clusters using the Rose (1984) Ca II index, and demonstrate that blue horizontal branches are not leading to erroneous age estimates in our analysis. The intermediate age clusters have generally higher velocities than the bulk of the M31 cluster population. Spatially, three of these clusters are projected onto the bulge region, the remaining three are distributed at large radii. We discuss these objects within the context of the build-up of the M31 halo, and suggest that these clusters possibly originated in a gas-rich dwarf galaxy, which may or may not be presently observable in M31.
description: 19 figures, 1 table, accepted for publication in the Astronomical Journal
Extension and adoption of biofortified crops: Quality protein maize in East Africa
Creators: name: De Groote, Hugo
name: Gunaratna, Nilupa S.
name: Ergano, Kebebe
name: Friesen, Dennis
name: De Groote, Hugo
name: Gunaratna, Nilupa S.
name: Ergano, Kebebe
name: Friesen, Dennis
Publisher: name: Unknown
Year: 2010
Subjects: Teaching/Communication/Extension/Profession

description: Biofortified crops, bred for improved nutritional quality, can alleviate nutritional deficiencies if they are produced and consumed in sufficient quantities. These varieties can be promoted based on their agronomic performance or based on their nutritional qualities. Quality protein maize (QPM) was the first biofortified crop and has been disseminated in Africa using both approaches. To study their effectiveness, a survey of rural households was conducted in the maize-growing areas of East Africa, comparing communities with access to QPM extension activities to control communities. The results show that a third to one half of the farmers in project communities participated in extension activities in all countries except Kenya. In these communities, familiarity with QPM was high (74-80% of farmers), again except for Kenya (19%), but understanding of their nutritional benefits was much lower (47-55%, with 7% in Kenya). In all countries, farmers evaluated QPM varieties as good or better than conventional varieties (CV) for post-harvest characteristics. For agronomic characteristics, however, QPM varieties scored better than CV in Uganda, about the same in Tanzania, but less in Ethiopia. Adoption patterns differed widely between the countries: in the project areas it varied from 70% in Uganda, 30% in Tanzania to none in Kenya. In the control areas, adoption was only observed in Uganda (45% of farmers). Factors that significantly influenced adoption were farmers’ participation in extension activities, farmers’ agronomic and post-harvest evaluation of QPM vs. CM, and their understanding of the nutritional benefits of QPM. Evaluation for agronomic performance was found to be more important than knowledge of nutritional benefits, thus favoring the first approach. A reliable seed supply was, however, found to be a basic condition for adoption.
Inclusive Production of Single Hadrons with Finite Transverse Momenta in Deep-Inelastic Scattering at Next-to-Leading Order
Creators: name: Kniehl, B. A.
name: Kramer, G.
name: Maniatis, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We calculate the cross section for the inclusive production of single hadrons with finite transverse momenta in deep-inelastic scattering at next-to-leading order (NLO), i.e. through O(alpha_s^2), in the parton model of QCD endowed with non-perturbative parton distribution functions (PDFs) and fragmentation functions (FFs). The NLO correction is found to produce a sizeable enhancement in cross section, of up to one order of magnitude, bringing the theoretical prediction to good agreement with recent measurements for neutral pions and charged hadrons at DESY HERA. This provides a useful test for the universality and the scaling violations of the FFs predicted by the factorization theorem. Such comparisons can also be used to constrain the gluon PDF of the proton.
description: 26 pages, 12 figures
Gravitational wave asteroseismology for low-mass neutron stars
Creators: name: Sotani, Hajime
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The fundamental ($f$-) mode gravitational waves from cold low-mass neutron stars are systematically studied with various equations of state (EOSs) characterized by the nuclear saturation parameters, especially focusing on the phenomena of the avoided crossing with the first pressure ($p_1$-) mode. We find that the $f$-mode frequency and the average density for the neutron star at the avoided crossing can be expressed as a function of the parameter, $η$, which is the specific combination of the nuclear saturation parameters. Owing to these relations, we can derive the empirical formula expressing the $f$-mode frequency for a low-mass neutron star, whose central density is larger than that for the neutron star at the avoided crossing, as a function of $η$ and the square root of the stellar average density, $x$. On the other hand, we also derive the empirical formula expressing the $f$-mode frequency for a neutron star, whose central density is less than that for the neutron star at the avoided crossing, as a function of $x$ independently of the adopted EOS. Furthermore, adopting the empirical formula of $x$ as a function of $η$ and $u_c$, which is the ratio of the stellar central density to the saturation density, we can also rewrite our empirical formula for the $f$-mode frequency to a function of $η$ and $u_c$. So, by observing the $f$-mode gravitational wave from a low-mass neutron star, whose mass or gravitational redshift is known, one could evaluate the values of $η$ and $u_c$, which enables us to severely constrain the EOS for neutron star matter.
The idea of translation : exploring linguistic and cultural interstices in educational contexts
Creators: name: Nishizawa, Sumiko
Publisher: name: University of British Columbia
Year: 2009

description: The number of overseas and immigrant students enrolled in post-secondary institutions has been increasing throughout North America, resulting in culturally and linguistically diverse classrooms. In response to this major social change, Canadian college and university educators seek ways to integrate students of diverse linguistic and cultural backgrounds and nurture mutual understanding. The challenge of educators, as well as both native English-speaking and English language learning students, is to understand how norms and values shaped by language and embedded in texts, classroom tasks, and interpersonal relationships are translated across cultures. This idea of translation offers a lens through which the intersections of languages and cultures may be richly explored. This study examines how different conceptions of translation operate in socioculturally diverse classroom spaces, while pointing to strategies for reducing barriers to productive and harmonious learning. The study first analyzes various conceptions of translation. It focuses on a hermeneutic concept of language as interpretation, helping us perceive an emerging new space where languages and cultures meet and interrelate. The study also analyzes sociocultural and political effects of translation, in particular, approaches derived from cultural studies and postcolonial studies. Using translations between Japanese and English as examples, the study examines how asymmetrical relations of power construct national identities. Then the focus shifts to post- secondary education. The study examines and interprets the conceptions of translation reflected in textbooks and literature in two curricula areas—college preparatory ELL courses, and first-year English literature courses—in order to clarify how these texts embody particular educational principles and values. As applied in this study, the hermeneutic conceptions of translation illuminate the educational potentialities of texts. Conceptions of translation derived from postcolonial and cultural studies demonstrate how texts can manipulate representation of power and historicity, and hinder opportunities to embrace differences and to create inclusive learning environments. Conceptions of translation with hermeneutic interest, on the other hand, suggest that texts can open up a border world—a third, in-between space—where newness can emerge. The study illustrates how this space, a borderless generative space and a locus to share and appreciate difference, can enrich the educational experience of students and teachers alike.
GDI D1.5 - Project communication strategy - update and evaluation
Creators: name: Tseng, Zippy
Publisher: name: Zenodo
Year: 2024
Subjects: GDI
European Genomic Data Infrastructure
1+MG
1+Million Genomes Initiative
B1MG
Project communication strategy
Dissemination

description: This document presents the findings and outcomes of the evaluation of the GDI project communications, as defined in D1.2 GDI Project communications strategy. It presents qualitative and quantitative data to measure the effectiveness of GDI communications and provides a series of recommendations and updates on the strategy.

The evaluation shows that the project has effectively implemented the D1.2 GDI Project communication strategy with content across communications channels, including website, newsletters and social media. Based on the results of the evaluation, four key areas for improvement were identified:

Increase the frequency of social media posting and optimise the strategy

Expand the newsletter outreach

Monitor the engagement metrics

Highlight GDI outputs through engaging video content

This strategy focuses on project communications and is distinct from D1.3 (Wider communications strategy), which specifically addresses citizens and healthcare professionals.
Potential of Sorghum and Finger Millet to Enhance Household Food Security in Zimbabwe's Semi-arid Regions: A Review
Creators: name: Mukarumbwa, P.
name: Mushunje, Abbyssinia
name: Mukarumbwa, P.
name: Mushunje, Abbyssinia
Publisher: name: Unknown
Year: 2010
Subjects: subject: Crop Production/Industries
subject: semi-arid
subject: sorghum
subject: finger millet
subject: small grains
subject: food security

description: Successive droughts, in Zimbabwe compounded by other economic shocks in recent years have resulted in decreased maize productivity amongst the communal farmers most of whom reside in regions IV and V which are considered semi-arid. This has given rise to the need to find alternative food crops, which may be suitable for these areas. Generally, research in the world indicates that sorghum and millet have the potential to end chronic food insecurity in semi-arid areas because of their drought tolerance. Whilst this might be the case, research, government policy and assistance from non-governmental organizations on food crop production in Zimbabwe have shown a continual inclination to maize production in semi-arid areas. However, maize is regarded as a high risk crop in these regions. The main objective of this paper is to review relevant literature on the potential contribution of small grains to alleviate household food security in semi arid regions of African countries with specific focus on Zimbabwe. These findings will enable developing countries to craft a policy shift that encourage increased production of finger millet and sorghum in their semi-arid regions. It is suggested that this may increase household food security in these regions.
Term algebras of elementarily equivalent atom structures
Creators: name: Andréka, H.
name: Németi, I.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 06E25, 03G15, 03B10, 03B45

description: We exhibit two relation algebra atom structures such that they are elementarily equivalent but their term algebras are not. This answers Problem 14.19 in the book Hirsch, R. and Hodkinson, I., "Relation Algebras by Games", North-Holland, 2002.