cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rapid Reconnaissance of Coarse Grain Production and Marketing in the CMDT zone of southern Mali: field work report of the IER-CSA-PROMISAM team December 13-19, 2009
Creators: name: Boughton, Duncan
name: Dembele, Niama Nango
name: Boughton, Duncan
name: Dembele, Niama Nango
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Food Security and Poverty
subject: International Development
subject: Marketing
subject: FOS: Economics and business
subject: food security
subject: MALI
subject: food policy
subject: grain
subject: production
subject: marketing

description: This report presents principal findings of a rapid reconnaissance undertaken in December, 2009 as preparation for more detailed marketing studies to be undertaken in the context of PROMISAM II’s applied research program on promoting food security in Mali. The objective of the reconnaissance was to explore changes in cereal production and marketing patterns as an input to the design of a forthcoming study of changes in the structure, conduct and performance of the coarse grain sector in Mali. To facilitate discussions with farmers and traders an interview guide was prepared. The first section of this report synthesizes the principal findings, while the annex presents detailed field notes from the study together with the interview guide.
Staple Food Trade in the COMESA Region: The Need for a Regional Approach to Stimulate Agricultural Growth and Enhance Food Security
Creators: name: Nijhoff, Jan J.
name: Nijhoff, Jan J.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Food Security and Poverty
subject: International Development
subject: International Relations/Trade
subject: food security
subject: Africa
subject: grain
subject: trade
subject: food policy

description: Poverty reduction in the COMESA region can only be achieved by bringing about agricultural sector growth. The first Millennium Development Goal, halving hunger and poverty by 2015, gave the impetus for the AU and NEPAD to launch the Comprehensive African Agricultural Development Programme (CAADP), which is currently being designed and implemented in many of the COMESA member states as well as at the regional level. The CAADP framework recognizes that reduction of poverty and food insecurity requires, among other things, a favourable investment climate, national and regional market access, and supportive public policies
description: COMMON MARKET FOR EASTERN AND SOUTHERN AFRICA Twenty Fourth Meeting of the Trade and Customs Committee Nairobi, Kenya 2-4 November, 2009
Workshop-Bericht: Der Stamp in der Beratung
Creators: name: Künstler-Sment, Julia
name: Meyermann, Alexia
name: Netscher, Sebastian
name: Pegelow, Lisa
Publisher: name: Zenodo
Year: 2023
Subjects: research data managment
data management plans
consulting at universities
data repositories
research infrastructure institutes
Stamp

description: Effektives Forschungsdatenmanagement (FDM) ist eine grundlegende Voraussetzung für die Zugänglichkeit und Nachnutzbarkeit von Forschungsdaten. Dies gilt insbesondere für die Bildungsforschung, die sich durch eine hohe Heterogenität von Forschungsdesigns, Methodiken und Datentypen auszeichnet. Dabei ist eine maßgeschneiderte Unterstützung von Forschenden in der Planung, Implementierung und Umsetzung ihres FDM entscheidend, die auf den Datentypus, das Forschungsdesign und die Methodik abgestimmt ist. Eine solche maßgeschneiderte Unterstützung bietet der Standardisierte Datenmanagementplan für die Bildungsforschung (Stamp). Im Rahmen des Kurzprojekts "Der Stamp in der Beratung" wurde dessen Einsatz in der akademischen Beratung evaluiert. Zwei hierfür durchgeführte Workshops mit Beratenden von Universitäten sowie von Forschungsdatenzentren verdeutlichten die Vielfalt der Beratungspraktiken und die Heterogenität universitärer Ansätze im FDM. Der Stamp wurde als wertvolles Instrument identifiziert, jedoch variierte seine Nutzbarkeit in der akademischen Beratung. Die Ergebnisse der Workshops unterstreichen die Notwendigkeit individueller, praxisorientierter Beratung und positionieren den Stamp als effektives Werkzeug zum FDM und zur FDM-Beratung. Die Integration institutioneller Leitlinien und eine verstärkte Sensibilisierung fördern die Nutzbarkeit des Stamps. Als standardisiertes Tool unterstützt der Stamp Forschende in der Generierung und Verfügbarmachung zur Nachnutzung qualitativ hochwertiger Daten.
AP, IB, BC examinations and three dimensions in the Dartmouth Seminar
Creators: name: Perez, Mary Fritzie
Publisher: name: University of British Columbia
Year: 2009

description: Regardless of what objective/aim schools profess to have, their chosen assessment instrument dictates what they actually do to/with the students and indicates what, upon completing secondary education, the students are intended to take with them from their academic experience. This study investigates three such assessment instruments: the IB, the AP and the BC IRP examinations. Looking at how they are designed and what they contain, it also traces the exams' particular demands on the teachers and specific implications for the students. The study then explores these demands and implications in terms of the 1966 Anglo-American Dartmouth Seminar recommendations. Specifically, they are seen in light of John Dixon's (1967) 'Growth' model, Herbert Muller's report on the conference, and John Miller and Wayne Seller's three curriculum perspectives. Basically, of the three exams, the IB exhibits the strongest relationship to the Dartmouth ideals, with the BC displaying some, and the AP reflecting much of what the seminar rejected. Essentially, exams today continue to display evidence of ideas (and practices) the seminar participants denounced: the Transmission or 'Skills' and 'Heritage' principles. These are not entirely eradicated as generally hoped by the participants or by many modern educators. Nevertheless, there is also clear evidence of their recommendations or the 'Growth' model at work. Transaction and Transformation teaching or learning are encouraged wherein personal response from the student is elicited and, in fact, demanded in the examinations. There is also evidence of activities involving "imagination," creativity in writing, and personal "engagement" with literature (Muller, 1976, pp. 160, 79). There is, in these three exams, at least, definite evidence of a subject continually evolving to nurture keen writers and enamour them permanently with literature.
Qubit-efficient encoding schemes for binary optimisation problems
Creators: name: Tan, Benjamin
name: Lemonde, Marc-Antoine
name: Thanasilp, Supanut
name: Tangpanitanon, Jirawat
name: Angelakis, Dimitris G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We propose and analyze a set of variational quantum algorithms for solving quadratic unconstrained binary optimization problems where a problem consisting of $n_c$ classical variables can be implemented on $\mathcal O(\log n_c)$ number of qubits. The underlying encoding scheme allows for a systematic increase in correlations among the classical variables captured by a variational quantum state by progressively increasing the number of qubits involved. We first examine the simplest limit where all correlations are neglected, i.e. when the quantum state can only describe statistically independent classical variables. We apply this minimal encoding to find approximate solutions of a general problem instance comprised of 64 classical variables using 7 qubits. Next, we show how two-body correlations between the classical variables can be incorporated in the variational quantum state and how it can improve the quality of the approximate solutions. We give an example by solving a 42-variable Max-Cut problem using only 8 qubits where we exploit the specific topology of the problem. We analyze whether these cases can be optimized efficiently given the limited resources available in state-of-the-art quantum platforms. Lastly, we present the general framework for extending the expressibility of the probability distribution to any multi-body correlations.
description: 9 pages of main text + 6 figures. Comments are welcome
Waveform sampling using an adiabatically driven electron ratchet in a two-dimensional electron system
Creators: name: Mueller, T.
name: Wuertz, A.
name: Lorke, A.
name: Reuter, D.
name: Wieck, A. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We utilize a time-periodic ratchet-like potential modulation imposed onto a two-dimensional electron system inside a GaAs/Al$_x$Ga$_{1-x}$As heterostructure to evoke a net dc pumping current. The modulation is induced by two sets of interdigitated gates, interlacing off center, which can be independently addressed. When the transducers are driven by two identical but phase-shifted ac signals, a lateral dc pumping current $I(ϕ)$ results, which strongly depends on both, the phase shift $ϕ$ and the waveform $V(t)$ of the imposed gate voltages. We find that for different periodic signals, the phase dependence $I(ϕ)$ closely resembles $V(t)$. A simple linear model of adiabatic pumping in two-dimensional electron systems is presented, which reproduces well our experimental findings.
description: 3 figures
THE INFLUENCE OF SOCIAL DETERMINANTS ON PUBLIC HEALTH: A SYSTEMATIC REVIEW OF EVIDENCE
Creators: name: Maha Mohammed Aljuaid, Rahaf qublan aldawsari, Fatimah Abdullah Alshehri , Omar Shaffay Alenzy, Mamdouh Ali Alshahrani,Khalid Mohammed Alzahrani , Ghada Balhareth , Tariq Sewar
Publisher: name: Zenodo
Year: 2024

description: The social determinants of health (SDOH) play a crucial role in shaping public health outcomes, influencing well-being beyond traditional medical interventions. This systematic review synthesizes evidence from recent studies to explore the impact of key social factors—such as income, education, housing, employment, and social networks—on health outcomes. Findings indicate that individuals with lower income and education levels face heightened risks of chronic diseases and limited access to healthcare. Furthermore, inadequate housing and unstable employment are linked to mental health challenges, while social isolation and lack of community support exacerbate health disparities. The review highlights regional and demographic variations in the influence of SDOH, emphasizing the importance of localized policies to address inequities. Additionally, it discusses current gaps in research, including the need for deeper exploration of under-researched determinants and better measurement methodologies. The findings underscore the importance of multisectoral interventions and collaborative efforts to promote health equity. Policymakers must focus on addressing root social causes to improve public health outcomes and reduce disparities effectively. This review provides actionable insights for healthcare professionals, researchers, and policymakers committed to creating more inclusive and equitable public health systems.

Keywords: Social determinants of health, public health outcomes, health disparities, socioeconomic factors, housing and health, health equity, systematic review, social support networks, policy interventions, regional disparities
Effect of Asymmetric Strange-Antistrange Sea to the NuTeV Anomaly
Creators: name: Ding, Yong
name: Xu, Rong-Guang
name: Ma, Bo-Qiang
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the strange quark and antiquark distributions of the nucleon by using the effective chiral quark model, and find that the strange-antistrange asymmetry can bring a contribution of about 60--100% to the NuTeV deviation of $\sin^{2}θ_{w}$ from the standard value measured in other electroweak processes. The results are insensitive to different inputs. The light-flavor quark asymmetry of $\bar{d}-\bar{u}$ is also investigated and found to be consistent with the experimental measurements. Therefore the chiral quark model provides a successful picture to understand the NuTeV anomaly, as well as the light-flavor quark asymmetry and the proton spin problem in previous studies.
description: 10 LaTeX pages, 2 figures, Version to appear in PLB
On the long-time behavior of spin echo and its relation to free induction decay
Creators: name: Fine, Boris V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: It is predicted that (i) spin echoes have two kinds of generic long-time decays: either simple exponential, or a superposition of a monotonic and an oscillatory exponential decays; and (ii) the long-time behavior of spin echo and the long-time behavior of the corresponding homogeneous free induction decay are characterized by the same time constants. This prediction extends to various echo problems both within and beyond nuclear magnetic resonance. Experimental confirmation of this prediction would also support the notion of the eigenvalues of time evolution operators in large quantum systems.
description: 4 pages, 4 figures
XMM-Newton Observation of Diffuse Gas and LMXBs in the Elliptical Galaxy NGC 4649 (M60)
Creators: name: Randall, Scott W.
name: Sarazin, Craig L.
name: Irwin, Jimmy A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We present an XMM-Newton X-ray observation of the X-ray bright E2 elliptical galaxy NGC 4649. In addition to bright diffuse emission, we resolve 158 discrete sources, ~50 of which are likely to be low-mass X-ray binaries (LMXBs) associated with NGC 4649. We find evidence for variability in three sources between this observation and a previous Chandra observation. Additionally, we detect five sources that were not detected with Chandra despite its better detection limit, suggesting that these sources have since brightened. The total X-ray spectrum of the resolved sources is well-fit by a hard power-law, while the diffuse spectrum requires a hard and a soft component, presumably due to the relatively soft diffuse gas and the harder unresolved sources. A deprojection of the diffuse emission revealed a radial temperature gradient that is hot in the center, drops to a minimum at about 20-50" (1.6-4.1 kpc), and rises again in the outer regions. The diffuse emission appears to require a two-temperature model with heavy element abundance ratios that differ from the solar values. We have verified the existence of faint radial features extending out from the core of NGC 4649 that had previously been seen with Chandra. The fingers are morphologically similar to radial features seen in hydrodynamic simulations of cooling flows in elliptical galaxies. We also find evidence for a longer, previously undetected filament that extends to the northeastern edge of NGC 4649. We conclude that the filament may be the result of a tidal interaction, possibly with NGC 4647, though more work is necessary to verify this conclusion.
description: 23 pages, 4 tables, 10 figures, accepted for publication in ApJ
Pair Correlation Function Characteristics of Nearly Jammed Disordered and Ordered Hard-Sphere Packings
Creators: name: Donev, A.
name: Torquato, S.
name: Stillinger, F. H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the approach to jamming in hard-sphere packings, and, in particular, the pair correlation function $g_{2}(r)$ around contact, both theoretically and computationally. Our computational data unambiguously separates the narrowing delta-function contribution to $g_{2}$ due to emerging interparticle contacts from the background contribution due to near contacts. The data also shows with unprecedented accuracy that disordered hard-sphere packings are strictly isostatic, i.e., the number of exact contacts in the jamming limit is exactly equal to the number of degrees of freedom, once rattlers are removed. For such isostatic packings, we derive a theoretical connection between the probability distribution of interparticle forces $P_{f}(f)$, which we measure computationally, and the contact contribution to $g_{2}$. We verify this relation for computationally-generated isostatic packings that are representative of the maximally jammed random state. We clearly observe a maximum in $P_{f}$ and a nonzero probability of zero force. We computationally observe an unusual power-law divergence in the near-contact contribution to $g_{2}$, persistent even in the jamming limit, with an exponent of -0.4. We also present the first computational data on the contact-contribution to $g_{2}$ for vacancy-diluted FCC crystal packings and also investigate partially crystallized packings along the transition from maximally disordered to fully ordered packings. Unlike previous studies, we find that ordering has a significant impact on the shape of $P_{f}$ for small forces.
description: Submitted for publication
Quantum Advantage with Seeded Squeezed Light for Absorption Measurement
Creators: name: Li, Fu
name: Li, Tian
name: Scully, Marlan O.
name: Agarwal, Girish S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Absorption measurement is an exceptionally versatile tool for many applications in science and engineering. For absorption measurements using laser beams of light, the sensitivity is theoretically limited by the shot noise due to the fundamental Poisson distribution of photon number in laser radiation. In practice, the shot-noise limit can only be achieved when all other sources of noise are eliminated. \textcolor{black}{Here, we use seeded squeezed light to demonstrate that direct absorption measurement can be performed with sensitivity beyond the shot-noise limit. We present a practically realizable scheme, where intensity squeezed beams are generated by a seeded four-wave mixing process in an atomic rubidium vapor cell. More than 1.2~dB quantum advantage for the measurement sensitivity is obtained at faint absorption levels ($\leq 10\%$). We also present a detailed theoretical analysis to show that the observed quantum advantage when corrected for optical loss would be equivalent to 3~dB. Our experiment demonstrates a direct sub-shot-noise measurement of absorption that requires neither homodyne/lock-in nor logic coincidence detection schemes. It is therefore very applicable in many circumstances where sub-shot-noise-level absorption measurements are highly desirable.
description: 8 pages, 6 figures. arXiv admin note: text overlap with arXiv:2005.00108
Discrete Painlevé equations for a class of \PVI $τ$-functions given as U(N) averages
Creators: name: Forrester, P. J.
name: Witte, N. S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 33C45; 33E17; 15A52; 82B23

description: In a recent work difference equations (Laguerre-Freud equations) for the bi-orthogonal polynomials and related quantities corresponding to the weight on the unit circle $ w(z)=\prod^m_{j=1}(z-z_j(t))^{ρ_j} $ were derived.Here it is shown that in the case $ m=3 $ these difference equations, when applied to the calculation of the underlying U(N) average, reduce to a coupled system identifiable with that obtained by Adler and van Moerbeke using methods of the Toeplitz lattice and Virasoro constraints. Moreover it is shown that this coupled system can be reduced to yield the discrete fifth Painlevé equation \dPV as it occurs in the theory of the sixth Painlevé system. Methods based on affine Weyl group symmetries of Bäcklund transformations have previously yielded the \dPV equation but with different parameters for the same problem. We find the explicit mapping between the two forms. Applications of our results are made to give recurrences for the gap probabilities and moments in the circular unitary ensemble of random matrices, and to the diagonal spin-spin correlation function of the square lattice Ising model.
description: Companion work to CA/0412394
Pioneer anomaly? Gravitational pull due to the Kuiper belt
Creators: name: de Diego, Jose A.
name: Nunez, Dario
name: Zavala, Jesus
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this work we study the gravitational influence of the material extending from Uranus orbit to the Kuiper belt and beyond on objects moving within these regions. We conclude that a density distribution given by $ρ(r)=\frac{1}{r}$ (for $r\geq 20 UA$) generates a constant acceleration towards the Sun on those objects, which, with the proper amount of mass, accounts for the blue shift detected on the Pioneers space crafts. We also discuss the effect of this gravitational pull on Neptune, and comment on the possible origin of such a matter distribution.
description: 5 figures, final version, accepted for publication at Int. J. of Mod. Phys. D
The development and validation of procedures to assess writing plans
Creators: name: Chai, Constance Oi Lin
Publisher: name: University of British Columbia
Year: 2009

description: If writing matters, how can we improve it? Building on previous work that found engaging in prewriting activities and prewriting strategies as essential elements to the writing process, this study investigated the nature of writing plan quality and its relationship to the ensuing writing scores. Data were drawn from the 1998 Provincial Learning Assessment Programme (PLAP) in Writing, which was administered to pupils in Grades 4, 7, and 10 across British Columbia. Types of prewriting strategies pupils applied were categorised. In addition, common features of writing quality were qualitatively identified in a sub-sample of writing plans across the three grade levels. An analytic scoring scheme was developed based on identified features of writing quality in writing plans, evaluative terms commonly used as criteria to measure writing performance in both large-scale and classroom assessments, and, theory and research in writing. The scheme was used to assess 1,797 writing plans. Correlation and regression analyses were used to determine relationships between quality of writing plans and writing scores. c Results indicate that (a) essays with accompanying writing plans were awarded higher writing scores than essays without writing plans, (b) evidence of elaborate features of writing quality in writing plans was associated with higher writing scores, (c) two thirds of content in writing plans was incorporated into corresponding essays, and, (d) even though female pupils outperformed male pupils in achieving higher writing scores and generating writing plans at each grade level, both male and female pupils tended to focus on similar strategies and features of writing quality when preparing a writing plan. Identification of features of writing plan quality provides valuable instructional information and insights into how children develop their ideas for writing. The findings have important implications for assessing writers' planning quality, and ultimately, the quality of writing.
Chaotic and periodical dynamics of active chiral droplets
Creators: name: Carenza, Livio Nicola
name: Gonnella, Giuseppe
name: Marenduzzo, Davide
name: Negro, Giuseppe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The interplay between the chirality of many biological molecules and the energy injected at small length-scales as the result of biological processes is at the base of the life of the cells. With the aim of unveiling the connection between these two features, here we analyze by means of lattice Boltzmann simulations the behavior of an active droplet of cholesteric liquid crystal under the effect of intense active doping, within the framework of active gel theory. We find that a droplet of chiral liquid crystal, fueled by active force dipoles, develops defect loops (closed disclination lines) that pierce the interior of the droplet, leading the droplet to develop an erratic motility mode. When the droplet is fueled by in-warding active torque dipoles, three different dynamical regimes develops at varying both the thermodynamic chirality and the strength of active energy injection: a stable rotational state at low activity, an intermittent disclination dance regime, and a turbulent state where closed disclination lines formation is inhibited and new pairs of oppositely charged surface defects leads to the development of chaotic rotational motion. Finally, we show that out-warding torque dipoles are able to sustain a periodical dynamics at higher chirality characterized by the nucleation/annihilation of pairs of disclination rings.
Beam Test of a Prototype Detector Array for the PoGO Astronomical Hard X-Ray/Soft Gamma-Ray Polarimeter
Creators: name: Mizuno, T.
name: Kamae, T.
name: Ng, J. S. T.
name: Tajima, H.
name: Mitchell, J. W.
name: Streitmatter, R.
name: Fernholz, R. C.
name: Groth, E.
name: Fukazawa, Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Polarization measurements in the X-ray and gamma-ray energy range can provide crucial information on massive compact objects such as black holes and neutron stars. The Polarized Gamma-ray Observer (PoGO) is a new balloon-borne instrument designed to measure polarization from astrophysical objects in the 30-100 keV range, under development by an international collaboration with members from United States, Japan, Sweden and France. To examine PoGO's capability, a beam test of a simplified prototype detector array was conducted at the Argonne National Laboratory Advanced Photon Source. The detector array consisted of seven plastic scintillators, and was irradiated by polarized photon beams at 60, 73, and 83 keV. The data showed a clear polarization signal, with a measured modulation factor of $0.42 \pm 0.01$. This was successfully reproduced at the 10% level by the computer simulation package Geant4 after modifications to its implementation of polarized Compton/Rayleigh scattering. Details of the beam test and the validation of the Geant4 simulations are presented.
description: Nuclear Instruments and Methods A, accepted
Faster Digital Quantum Simulation by Symmetry Protection
Creators: name: Tran, Minh C.
name: Su, Yuan
name: Carney, Daniel
name: Taylor, Jacob M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Simulating the dynamics of quantum systems is an important application of quantum computers and has seen a variety of implementations on current hardware. We show that by introducing quantum gates implementing unitary transformations generated by the symmetries of the system, one can induce destructive interference between the errors from different steps of the simulation, effectively giving faster quantum simulation by symmetry protection. We derive rigorous bounds on the error of a symmetry-protected simulation algorithm and identify conditions for optimal symmetry protection. In particular, when the symmetry transformations are chosen as powers of a unitary, the error of the algorithm is approximately projected to the so-called quantum Zeno subspaces. We prove a bound on this approximation error, exponentially improving a recent result of Burgarth, Facchi, Gramegna, and Pascazio. We apply the symmetry protection technique to the simulations of the XXZ Heisenberg interactions with local disorder and the Schwinger model in quantum field theory. For both systems, the technique can reduce the simulation error by several orders of magnitude over the unprotected simulation. Finally, we provide numerical evidence suggesting that the technique can also protect simulation against other types of coherent, temporally correlated errors, such as the $1/f$ noise commonly found in solid-state experiments.
description: 27 pages, 9 figures, additional analysis for higher-order Suzuki-Trotter formulas and a multi-product formula
The Value of Progenitor Radius Measurements for Explosion Modeling of Type II-Plateau Supernovae
Creators: name: Goldberg, Jared A.
name: Bildsten, Lars
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Using Modules for Experiments in Stellar Astrophysics (MESA)+STELLA, we show that very different physical models can adequately reproduce a specific observed Type II-Plateau Supernova (SN). We consider SN2004A, SN2004et, SN2009ib, SN2017eaw, and SN2017gmr, Nickel-rich ($M_\mathrm{Ni}>0.03M_\odot$) events with bolometric lightcurves and a well-sampled decline from the plateau. These events also have constraints on the progenitor radius, via a progenitor image, or, in the case of SN2017gmr, a radius from fitting shock-cooling models. In general, many explosions spanning the parameter space of progenitors can yield excellent lightcurve and Fe line velocity agreement, demonstrating the success of scaling laws in motivating models which match plateau properties for a given radius and highlighting the degeneracy between plateau luminosity and velocity in models and observed events, which can span over 50% in ejecta mass, radius, and explosion energy. This can help explain disagreements in explosion properties reported for the same event using different model calculations. Our calculations yield explosion properties when combined with pre-explosion progenitor radius measurements or a robust understanding of the outermost $<0.1\,M_\odot$ of material that quantifies the progenitor radius from SN observations a few days after explosion.
description: 8 pages, 4 figures, accepted to the Astrophysical Journal Letters
Preliminary Results from a Spectrosopic LyA Survey at Redshift 5.7 with IMACS
Creators: name: Martin, Crystal L.
name: Sawicki, Marcin
name: Dressler, Alan
name: McCarthy, Patrick J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe preliminary results from an ultra-sensitive, spectroscopic emission-line survey and illustrate the challenges inherent in identifying high-redshift LyA emitters. Our multi-slit windows technique complements other types of emission-line surveys. Narrowband imaging surveys cover large areas of sky but only detect much brighter objects. Longslit spectra taken along cluster caustics yield intrinsically fainter lensed LyA emitters but probe small volumes of space. We have observed the COSMOS deep field and a field at 15h +00. To a line flux of a few times 10^-18 erg/s/cm^2, we found 150 emission-line sources (with no detectable continuum) among 4 masks. These candidates are being re-observed with broad spectral coverage to determine the line identity. To date, the interloper to LyA ratio is about 8:1. The sky positions of the LyA candidates generally do not coincide with those of foreground objects in ultra-deep r band or i' images -- consistent with the presence of a strong Lyman break.
description: To appear in proceedings of UC Irvine May 2005 workshop on "First Light & Reionization", eds. E. Barton & A. Cooray, New Astronomy Reviews, in press. New version contains typo corrections
A tőkeszerkezet és a jövedelmezőség kapcsolata mezőgazdasági vállalkozásokban
Creators: name: Herczeg, Adrienn
name: Herczeg, Adrienn
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural Finance
subject: Farm Management
subject: társas vállalkozások
subject: tőkeszerkezet
subject: jövedelmezőség
subject: eredmény
subject: business partnerships
subject: capital structure
subject: profitability
subject: profit/loss

description: A versenyképes termelés, a jövedelmező gazdálkodás érdekében a megfelelő tőkeszerkezet, a tevékenység számára „optimális” tőkestruktúra kialakítása elengedhetetlen része a pénzügyi vezetők feladatainak, amit a vállalatok értékmaximalizálása során számításba kell venniük. A vizsgált jövedelmezőségi mutatók regressziós analízise révén igazolódott, hogy a forrásszerkezeti arányok jelentősen hatnak a jövedelmezőségre. Meghatározásra került továbbá egy olyan tőkeáttételi arány – tevékenységi irány és méretspecifi kusan –, melyről elmondható, hogy az azt meghaladó érték veszteséges gazdálkodással párosul. Megállapítható, hogy az optimális tőkestruktúra megteremtése érdekében első lépésben a saját források szerepének erősítésére szükséges törekedni, mindenekelőtt a jövedelemtermelő képesség helyreállításával, hogy a tárgyévi mérleg szerinti eredmény, mint saját tőkeelem felhasználható legyen a vállalati működés biztosítása, a tevékenység finanszírozása érdekében. A saját tőke és az idegen tőke arányának körültekintő alakítását követően a hitelstruktúra összeállításában elsődleges a kötelezettségállományon belüli hosszú lejáratú idegen tőke dominanciája. ------------------------------- The analysis of capital system of agricultural corporations is a key issue in economics. Its fluctuation have noticeable effect on various fields of the life of corporations and affect competitiveness and profitable production. The aim of this study is to reveal the connection between capital system and profitability as well as to analyze changes of profitability indexes which play a role in developing the capital system. Regression analysis of the profitability indexes proved that the capital structure had a significant effect on profitability. A maximum rate of capital leverage is identified (by activity and size) enterprises) – rates higher than this are a sign that the enterprise is making a loss. It was concluded that competitiveness cannot be achieved without defining the optimal capital structure. The first step in this direction should be to strengthen own capital funds, primarily by restoring the ability to produce revenue. This way the profit for the year - as an element of own capital - can be used for the operation and financing of the enterprise. Careful setting of the ratio of foreign and own capital should be followed by ensuring that debt liabilities are dominated by long-term foreign capital. Regarding the credit structuring, it must be pointed out that while a low level of indebtedness reduces operational risks, it also means that most of the farms have to key production to their self-financing capabilities.
Additional file 2 of Monitoring intrapartum fetal heart rates by mothers in labour in two public hospitals: an initiative to improve maternal and neonatal healthcare in Liberia
Creators: name: K. Borzie
name: N. Jasper
name: D. P. Southall
name: R. MacDonald
name: A. A. Kola
name: O. Dolo
name: A. Magnus
name: S. D. Watson
name: M. Casement
name: B. Dahn
name: W. Jallah
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer

description: Additional file 2. Table of all maternal comments on their experience of undertaking monitoring of their unborn babies during labour categorised by age groups. This file describes the actual comments made on the monitoring process by each mother, either written directly or transcribed for illiterate mothers by the attending obstetric clinician.
Additional file 1 of Monitoring intrapartum fetal heart rates by mothers in labour in two public hospitals: an initiative to improve maternal and neonatal healthcare in Liberia
Creators: name: K. Borzie
name: N. Jasper
name: D. P. Southall
name: R. MacDonald
name: A. A. Kola
name: O. Dolo
name: A. Magnus
name: S. D. Watson
name: M. Casement
name: B. Dahn
name: W. Jallah
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer

description: Additional file 1. Master copy of the consent form, fetal heart rate monitoring and data collection and maternal comment form. This form describes the way in which data were documented and collected on each participant. The consent form provides the information that was either read by each participating mother, if literate, or read to the mother by the obstetric clinician. The form could either be signed by the mother or she could provide her fingerprint from an ink pad. The FHR monitoring form was given to each mother who was asked to tick each time she listened to the FHR for approximately one minute following the end of every uterine contraction. If the mother considered that the FHR had changed, she would notify the midwife caring for her who would check the FHR, count it, and write down her own findings on this chart. If the midwife considered that there was a potentially clinically relevant change in FHR she/he immediately notified the on-call obstetric clinician or doctor. The data collection form recorded a summary of potentially relevant clinical data on the labour, delivery, neonatal Apgar Scores at 1 and 5 min, and any resuscitation given to the baby. Recorded on this form was any admission of the neonate to the neonatal unit and any treatment given to the baby. The form also includes a section in which the comments made by mothers on their experience of the monitoring were recorded either by themselves or as transcribed by the attending midwife or obstetric clinician.
Exploring the time-domain deep attractor network with two-stream architectures in a reverberant environment
Creators: name: Chen, Hangting
name: Zhang, Pengyuan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Deep attractor networks (DANs) perform speech separation with discriminative embeddings and speaker attractors. Compared with methods based on the permutation invariant training (PIT), DANs define a deep embedding space and deliver a more elaborate representation on each time-frequency (T-F) bin. However, it has been observed that the DANs achieve limited improvement on the signal quality if directly deployed in a reverberant environment. Following the success of time-domain separation networks on the clean mixture speech, we propose a time-domain DAN (TD-DAN) with two-streams of convolutional networks, which efficiently perform both dereverberation and separation tasks under the condition of a variable number of speakers. The speaker encoding stream (SES) of the TD-DAN is trained to model the speaker information in the embedding space. The speech decoding stream (SDS) accepts speaker attractors from the SES and learns to estimate early reflections from the spectro-temporal representations. Meanwhile, additional clustering losses are used to bridge the gap between the oracle and the estimated attractors. Experiments were conducted on the Spatialized Multi-Speaker Wall Street Journal (SMS-WSJ) dataset. The early reflection was compared with the anechoic and reverberant signals and then was chosen as the learning targets. The experimental results demonstrated that the TD-DAN achieved scale-invariant source-to-distortion ratio (SI-SDR) gains of 9.79/7.47 dB on the reverberant 2/3-speaker evaluation set, exceeding the baseline DAN and convolutional time-domain audio separation network (Conv-TasNet) by 1.92/0.68 dB and 0.91/0.47 dB, respectively.
description: Neural Networks (2021)
Nonequilibrium plasmons and transport properties of a double--junction quantum wire
Creators: name: Kim, Jaeuk U.
name: Choi, Mahn-Soo
name: Krive, Ilya V.
name: Kinaret, Jari M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study theoretically the current-voltage characteristics, shot noise, and full counting statistics of a quantum wire double barrier structure. We model each wire segment by a spinless Luttinger liquid. Within the sequential tunneling approach, we describe the system's dynamics using a master equation. We show that at finite bias the non-equilibrium distribution of plasmons in the central wire segment leads to increased average current, enhanced shot noise, and full counting statistics corresponding to a super-Poissonian process. These effects are particularly pronounced in the strong interaction regime, while in the non-interacting case we recover results obtained earlier using detailed balance arguments.
description: 22 pages, RevTex 2-column, 11 figures
Ademoixys Kim & Boxshall 2020, gen. nov.
Creators: name: Kim, Il-Hoi
name: Boxshall, Geoff A.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Copepoda
Cyclopoida
Notodelphyidae
Ademoixys

description: Ademoixys gen. nov.
Diagnosis. Body linear, fusiform. Cephalosome clearly defined. First and second pedigerous somite indistinctly defined; fused third and fourth pedigerous somites oval. Freeurosome indistinctly 4-segmented. Caudalramus armed with 6 small setae. Rostrum as small anteroventral lobe on frontal margin of dorsal cephalic shield. Antennule small, unsegmented. Antenna 3-segmented with small terminal claw. Mandible consisting of coxa extending medially as large hook, and palp consistingof basis and 1-segmented rami, armed with 1 seta on basis, 4 onexopodand 5 on endopod. Maxillule simplified, represented by lobe bearing several setae. Maxilla 4- segmentedwith 2-segmented endopod; lacking defined claw on basis. Maxilliped as lobe bearing setae distally. Legs 1–4 biramous, each with 2-segmented protopod. All swimming legs unarmed, except inner distal spine on basis of leg 1. Legs 2–4 with 3-segmented exopods and 2-segmented endopods. Leg 5 represented by tapering posteroventral process on somite.
Typeandonly species. Ademoixysfusiforma (Ooishi, 1972) comb. nov. (originally as Demoixys fusiforma), by original designation
Etymology. From “ a ” (Greek prefix meaning “not”) and the generic name Demoixys, referring to the differences between the new genus and Demoixys. Gender feminine.
Remarks. Ooishi (1972) described D. fusiforma based on material found living in association with the ascidian Distaplia dubia (Oka, 1927) in Japanese waters. This copepod differs fundamentally from known species of Demoixys, so the new genus, Ademoixys gen. nov., is established to accommodate it as type species. The significant features defining the new genus are the transformation of the coxal gnathobase of the mandible into a powerful hook, the fusiform body, and the distinct butunarmed rami of the swimming legs.
description: Published as part of Kim, Il-Hoi & Boxshall, Geoff A., 2020, Untold diversity: the astonishing species richness of the Notodelphyidae (Copepoda: Cyclopoida), a family of symbiotic copepods associated with ascidians (Tunicata), pp. 1-6 in Megataxa 4 (1) on page 554, DOI: 10.11646/megataxa.4.1.1, http://zenodo.org/record/4591138
Bounds of the sum of edge lengths in linear arrangements of trees
Creators: name: Ferrer-i-Cancho, Ramon
name: Gómez-Rodríguez, Carlos
name: Esteban, Juan Luis
Publisher: name: arXiv
Year: 2020
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Computation and Language (cs.CL)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: A fundamental problem in network science is the normalization of the topological or physical distance between vertices, that requires understanding the range of variation of the unnormalized distances. Here we investigate the limits of the variation of the physical distance in linear arrangements of the vertices of trees. In particular, we investigate various problems on the sum of edge lengths in trees of a fixed size: the minimum and the maximum value of the sum for specific trees, the minimum and the maximum in classes of trees (bistar trees and caterpillar trees) and finally the minimum and the maximum for any tree. We establish some foundations for research on optimality scores for spatial networks in one dimension.
description: Title changed at proof stage
Fenntarthatósági vizsgálatok a vidékfejlesztésben
Creators: name: Csete, Maria
name: Csete, Maria
Publisher: name: Unknown
Year: 2009
Subjects: subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: fenntarthatóság
subject: vidékfejlesztés
subject: kistérség
subject: empirikus felmérés
subject: sustainability
subject: rural development
subject: micro-region
subject: empirical survey

description: A fenntarthatóság jelentősége és aktualitása nem szorul különösebb bizonyításra, mert tapasztalható, hogy a természeti rendszerek körforgásának, vagy az anyagi javak újratermelésének zavarai már az emberi létezést veszélyeztetik. A vizsgálat tárgyául a Tisza-tó térsége, illetve a Tisza-tó Térségi Fejlesztési Tanácsba tömörült 73 település szolgált. Hazánkban a fenntarthatósági vizsgálatok szerepe a vidékfejlesztésben kiemelt jelentőségű. A vidéki térségek fejlettségi szintjei és lehetőségei erőteljesen befolyásolhatják a fenntarthatóság gyakorlati megvalósításának esélyeit, amint azt korábbi vizsgálataink is alátámasztották. A vizsgált területen a támogatásokban meghirdetett fejlesztési elgondolások kérdőíves vizsgálatának eredményei alapján megállapítható, hogy ezek nem tükröznek határozott irányvonalat, ami nem kedvez többek közt a helyi sajátosságokon alapuló vidéki fenntarthatósági törekvéseknek. Az „Új Magyarország Falu Program az élhető vidékért” öt intézkedéscsomagjának helyi megítélése sem minden esetben tükrözi a lokális adottságokban és értékekben rejlő lehetőségek felismerését, ami alapvetően nehezítheti a fenntartható vidékfejlesztést. ------------------------------------------- The importance and topicality of sustainability hardly needs to be demonstrated any further, as experience is showing us how troubles in the ecological cycles or the re-production of material goods threaten human existence. The study focused on the region of Tisza Lake and the 73 settlements which formed the Regional Development Council for Tisza Lake Region. Sustainability research plays a great role in rural development in Hungary. As shown in our earlier studies, the level of development and opportunities available to rural regions have a strong effect on the extent to which sustainability is implemented in practice. A questionnaire-based study of development concepts apparent in the calls for applications for subsidies in the region indicates that development concepts do not reflect a firm approach, which is not favourable for rural local sustainability initiatives based on local characteristics. Local opinions on the five packages of the ‘New Hungary Village Programme for Liveabl Rural Areas’ do not always indicate awareness of opportunities arising from local features and values, which may be a profound barrier to sustainable rural development.
Additional file 1 of In situ simulation training in helicopter emergency medical services: feasible for on-call crews?
Creators: name: Bredmose, Per P.
name: Hagemo, Jostein
name: Røislien, Jo
name: Østergaard, Doris
name: Sollid, Stephen
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Plant Biology

description: Additional file 1.