cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Landscape of coexisting excitonic states in the insulating single-layer cuprates and nickelates
Creators: name: Lane, Christopher
name: Zhu, Jian-Xin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an $\textit{ab initio}$ study of the excitonic states of a prototypical high-temperature superconductor La$_2$CuO$_4$ and compare them to the isostructural single-layer nickelate La$_2$NiO$_4$. Key difference in the low-energy electronic structure leads to very different excitonic behavior. Excitons in La$_2$CuO$_4$ are delocalized and can freely move in the CuO$_2$ plane without disturbing the antiferromagnetic order. In contrast, in La$_2$NiO$_4$ we find the low-lying excitonic states to be extremely localized, producing a nearly flat dispersion. The theoretically obtained excitonic dispersion and behavior are in excellent agreement with RIXS observations. To classify the excitons we project the electron-hole coupling onto each atomic site including the full manifold of atomic orbitals. We find the excitons to be composed of a linear combination of exciton classes, including Mott-Hubbard, $d-d$, and charge-transfer. The implication of these excitations to the high-$T_c$ pairing mechanism is also discussed.
description: 11 pages, 4 figures
title: Der Bauträgervertrag im Rahmen des Bauträgervertragsgesetzes
Creators: name: Fromm, Michael
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Liegenschaftsveräußerung
subject: Bauwerksvertrag
subject: Generalsanierung
subject: Bauträgerprojekt
subject: Dachgeschoßausbau

description: Bei der Realisierung von Immobilienprojekten kommt dem Bauträgervertragsrecht seit 1.1.1997 eine bedeutende Rolle zu. Insbesondere bei der Neuerrichtung von Wohnhäusern werden Erwerber oftmals verpflichtet vor Baufertigstellung und Übergabe des fertig gestellten Objekts Zahlungen an den Bauträger zu leisten. Eine entsprechende Absicherung für diese Zahlungen zugunsten des Erwerbers wurde durch das Bauträgervertragsrecht geschaffen. Bauträger haben zahlreiche Verpflichtungen des Bauträgerrechtes einzuhalten und diese bei der Projektplanung umfassend zu berücksichtigen. Insbesondere obliegt Bauträgern die Absicherung der Erwerber durch schuldrechtliche, pfandrechtliche oder grundbücherliche Absicherung, wobei bei Letzterer auch eine Zahlung des Entgelts nach einem gesetzlich definierten Ratenplan vorgegeben ist. Die zwingende Anwendung des Bauträgervertragsrechtes wurde in den letzten beiden Jahrzehnten ausgeweitet, undefinierte Begriffe im Bauträgervertragsgesetz selbst wurden durch die Rechtsprechung des Obersten Gerichtshofes und durch die Literatur entsprechend determiniert. Hierbei ist insbesondere darauf hinzuweisen, dass das Bauträgervertragsrecht auch auf Verträge anzuwenden ist, die eine wirtschaftliche Einheit bilden. Die Bestimmungen des Bauträgervertragsrechtes sind nicht nur bei der Neuerrichtung eines Gebäudes anzuwenden, sondern auch bei einer durchgreifenden Sanierung eines bereits bestehenden Bauwerks. Plant ein Bauträger einen Um- oder Ausbau eines Altbaus oder den Ausbau eines Dachgeschosses ist besonderes Augenmerk auf eine etwaige Anwendbarkeit des Bauträgervertragsgesetzes zu richten.
Inequalities for low-energy symmetric nuclear matter
Creators: name: Lee, Dean
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using effective field theory we prove inequalities for the correlations of two-nucleon operators in low-energy symmetric nuclear matter. For physical values of operator coefficients in the effective Lagrangian, the S = 1, I = 0 channel correlations must have the lowest energy and longest correlation length in the two-nucleon sector. This result is valid at nonzero density and temperature.
description: 9 pages
Examining relations among accuracy of social self-perceptions, reactive and proactive aggression, peer intimacy, and peer group integration in early adolescence
Creators: name: Vergel De Dios, Maria Celina
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of the present study was to examine the relations among accuracy of social self-perceptions, reactive and proactive aggression, peer intimacy and peer group integration for boys and girls in early adolescence. Participants included 335 boys (n = 175) and girls (n = 160) in the fifth through seventh grades. Teachers rated students on reactive and proactive aggression. Self- and peer nominations on a range of social behaviours (prosocial and noncompliant) were collected. Participants provided self-ratings of their peer intimacy and peer group integration. Results revealed that girls had lower reactive aggression, greater peer intimacy, and more accurate social self-perceptions on both prosocial and noncompliant behaviours compared to boys. Findings additionally indicated that inaccurate self-perceptions of one’s noncompliant behaviours were related to both reactive and proactive aggression for boys and girls. However, among boys only, more accurate self-perceptions of their prosocial behaviours was linked to problematic peer experiences involving higher proactive aggression and less peer intimacy.
Additional file 1 of What feedback do reviewers give when reviewing qualitative manuscripts? A focused mapping review and synthesis
Creators: name: HERBER, Oliver Rudolf
name: BRADBURY-JONES, Caroline
name: BÖLING, Susanna
name: COMBES, Sarah
name: HIRT, Julian
name: KOOP, Yvonne
name: NYHAGEN, Ragnhild
name: VELDHUIZEN, Jessica D.
name: TAYLOR, Julie
Publisher: name: figshare
Year: 2020
Subjects: Medicine
Science Policy

description: Additional file 1 References of all manuscripts included in the analysis (n = 107).
Negative differential thermal resistance and thermal transistor
Creators: name: Li, Baowen
name: Wang, Lei
name: Casati, Giulio
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We report on the first model of a thermal transistor to control heat flow. Like its electronic counterpart, our thermal transistor is a three-terminal device with the important feature that the current through the two terminals can be controlled by small changes in the temperature or in the current through the third terminal. This control feature allows us to switch the device between "off" (insulating) and "on" (conducting) states or to amplify a small current. The thermal transistor model is possible because of the negative differential thermal resistance.
description: 4 pages, 4 figures. SHortened. To appear in Applied Physics Letters
Regime shifts and technology diffusion in crop yield growth paths with an application to maize yields in Zimbabwe
Creators: name: Myers, Robert J.
name: Jayne, Thomas S.
name: Myers, Robert J.
name: Jayne, Thomas S.
Publisher: name: Unknown
Year: 1997
Subjects: Crop Production/Industries

description: An alternative specification for the trend component of crop yield growth is developed and applied to maize yield data for Zimbabwe’s large‐scale farming sector. This accounts for permanent regime shifts as new technologies are discovered but allows gradual absorption as adoption follows a diffusion path. Econometric methods are used to estimate the timing and importance of innovations, as well as the length of the diffusion path. Results from an application to Zimbabwe commercial maize yields indicate two major regime shifts that can be associated with the introduction of hybrid seed varieties, and a diffusion path that extends over a decade.
$CP$ violation from $τ$, $t$ and $b$ dimension-6 Yukawa couplings -- interplay of baryogenesis, EDM and Higgs physics
Creators: name: Fuchs, Elina
name: Losada, Marta
name: Nir, Yosef
name: Viernik, Yehonatan
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We explore the implications of the Standard Model effective field theory (SMEFT) with dimension-six terms involving the Higgs boson and third-generation fermion fields on the rate of Higgs boson production and decay into fermions, on the electric dipole moments (EDMs) of the electron, and on the baryon asymmetry of the Universe. We study the consequences of allowing these additional terms for each flavor separately and for combinations of two flavors. We find that a complex $τ$ Yukawa coupling can account for the observed baryon asymmetry $Y_B^{\rm obs}$ within current LHC and EDM bounds. A complex $b$ ($t$) Yukawa coupling can account for $4\%$ ($2\%$) of $Y_B^{\rm obs}$, whereas a combination of the two can reach $12\%$. Combining $τ$ with either $t$ or $b$ enlarges the viable parameter space owing to cancellations in the EDM and in either Higgs production times decay or the total Higgs width, respectively. Interestingly, in such a scenario there exists a region in parameter space where the SMEFT contributions to the electron EDM cancel and collider signal strengths are precisely SM-like, while producing sufficient baryon asymmetry. Measuring $CP$ violation in Higgs decays to $τ$ leptons is the smoking gun for this scenario.
description: 20 pages + appendix, 5 figures, 3 tables
Induced innovation and land degradation in developing country agriculture
Creators: name: Coxhead, Ian A.
name: Coxhead, Ian A.
Publisher: name: Unknown
Year: 1997
Subjects: Land Economics/Use

description: With few exceptions, induced innovation theories give little consideration either to the role of distortions as determinants of the factor biases of innovations, or to the influence of technical progress – with or without distortions – on the sectoral structure of production. This analysis identifies demand for innovations as a function of a specific policy setting which both conditions and is conditioned by the structure of production. In this context, when some sectors contribute more than others to environmental externalities, private and social optima in the allocation of research resources may diverge. In some circumstances it may be optimal to use research budget allocations as second‐best substitutes for Pigouvian taxes.
Solution of the Multi-Channel Anderson Impurity Model: Ground state and thermodynamics
Creators: name: Bolech, C. J.
name: Andrei, N.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present the solution of the SU(N) x SU(M) Anderson impurity model using the Bethe-Ansatz. We first explain what extensions to the formalism were required for the solution. Subsequently we determine the ground state and derive the thermodynamics over the full range of temperature and fields. We identify the different regimes of valence fluctuation at high temperatures, followed by moment formation or intrinsic mixed valence at intermediate temperatures and a low temperature non-Fermi liquid phase. Among other things we obtain the impurity entropy, charge valence and specific heat over the full range of temperature. We show that the low-energy physics is governed by a line of fixed points. This describes non-Fermi-liquid behavior in the integral valence regime, associated with moment formation, as well as in the mixed valence regime where no moment forms.
description: 28 pages, 8 figures, 1 table
Impact of interest rates on the decision to insure in agricultural production
Creators: name: Tarasov, Arthur
name: Tarasov, Arthur
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Crop Production/Industries
subject: Financial Economics
subject: Production Economics
subject: risk management
subject: agricultural insurance
subject: interest rates
subject: demand for insurance

description: This paper seeks to define the relationship between interest rates and decisions to insure among agricultural producers using the financial methodology. The choices are ultimately reduced to two options: to insure or to limit and absorb risk. Each choice produces a complex cash flow that is compared to the alternative and discounted by several factors. The difference between the options produces a quantitative measure of the financial incentive to insure. Some discounting factors of the cash flows follow the key interest rate to an extent for the latter to influence the decision to insure along with demand for insurance. The proposed method is tested on data from the emerging economy of Ukraine and the United States for the period 2002-2011. All participants of agricultural insurance markets can use the proposed methods to maximise efficiency. The research shows that ceteris paribus agricultural insurance requires bigger government subsidies to be viable under higher interest rates. Further empirical research is suggested.
description: http://dx.doi.org/10.7896/j.1226
Mg abundances in metal-poor halo stars as a tracer of early Galactic mixing
Creators: name: Arnone, E.
name: Ryan, S. G.
name: Argast, D.
name: Norris, J. E.
name: Beers, T. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results of a detailed chemical analysis performed on 23 main-sequence turnoff stars having -3.4<=[Fe/H]<=-2.2, a sample selected to be highly homogeneous in T_eff and log(g). We investigate the efficiency of mixing in the early Galaxy by means of the [Mg/Fe] ratio, and find that all values lie within a total range of 0.2 dex, with a standard deviation about the mean of 0.06 dex, consistent with measurement errors. This implies there is "little or no intrinsic scatter" in the early ISM, as suggested also by the most recent results from high-quality VLT observations. These results are in contrast with inhomogeneous Galactic chemical evolution (iGCE) models adopting present supernova (SN) II yields, which predict a peak-to-peak scatter in [Mg/Fe] as high as 1 dex at very low metallicity, with a corresponding standard deviation of about 0.4 dex. We propose that cooling and mixing timescales should be investigated in iGCE models to account for the apparent disagreement with present observations. The contrast between the constancy and small dispersion of [Mg/Fe] reported here and the quite different behaviour of [Ba/Fe] indicates, according to this interpretation, that Mg and Ba are predominantly synthesised in different progenitor mass ranges.
description: Astronomy&Astrophysics accepted September 27th, 2004 18 pages, 6 figures
The effects of weather risks on micro-regional agricultural insurance premiums in Hungary
Creators: name: Kemeny, Gabor
name: Varga, Tibor
name: Fogarasi, Jozsef
name: Nemes, Attila
name: Kemeny, Gabor
name: Varga, Tibor
name: Fogarasi, Jozsef
name: Nemes, Attila
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Crop Production/Industries
subject: Farm Management
subject: Financial Economics
subject: Production Economics
subject: weather risks
subject: micro-regions
subject: insurance premiums
subject: crop yields

description: This paper examines the effects of territorial differentiation of damage to wheat, maize, barley, sunflower and rapeseed production caused by drought and heavy rain. Our study evaluated the differences between LAU1 micro-regions in Hungary in the effects of the weather on agricultural production and found that there are extremely high differences in the probabilities of damage occurring. Therefore the design of agricultural insurance products should be based on different absolute deductibles and different insurance premiums for micro-regions. Furthermore, we found that within a micro-region individual producers face a very high diversity of risks which implies that in the long term only a bonus-malus system developed for individual agricultural producers can mitigate different risks, and that this can be the basis of a well performing risk management system that is suitable for a wide risk community.
description: http://dx.doi.org/10.7896/j.1305
Outflows Near An Accreting Black Hole: Ionization and Temperature Structure
Creators: name: Laming, J. Martin
name: Titarchuk, Lev
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We calculate the temperature and ionization balance in an outflow from an accreting black hole under illumination by hard radiation from the central object. Electron scattering of the Fe K_alpha photons within the highly ionized expanding flow leads to a decrease of their energy (redshift) which is first order in v/c, when v is the outflow velocity and v is much less than the speed of light c. This photon redshift is an intrinsic property of any outflow for which divergence is positive. We also find that the equivalent widths of red-skewed K_alpha originated in the wind is of order of keV. We conclude that redshifted lines are intrinsic properties of the powerful outflows that are observed in many compact objects. Downscattering of the primary line photons generated in the outflow (a more natural and probable mechanism than the general relativistic effects in the innermost part of the accretion flow) leads to the formation of red-skewed lines.
description: 9 pages, 3 figures, accepted by Astrophysical Journal Letters
Additional file 3 of Investigating longitudinal context-specific physical activity patterns in transition from primary to secondary school using accelerometers, GPS, and GIS
Creators: name: Remmers, Teun
name: Kann, Dave Van
name: Kremers, Stef
name: Ettema, Dick
name: Vries, Sanne I. De
name: Vos, Steven
name: Thijs, Carel
Publisher: name: figshare
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Plant Biology

description: Additional file 3. Attirition analyses.
Pattern formation during the impact of a partially-frozen binary droplet on a cold surface
Creators: name: Kant, Pallav
name: Müller-Groeling, Henrik
name: Lohse, Detlef
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Impact of a droplet on an undercooled surface is a complex phenomenon as it simultaneously instigates several physical processes that cover a broad spectrum of transport phenomena and phase-transition. Here, we report and explain an unexpected but highly relevant phenomenon of fingered growth of the solid-phase. It emerges during the impact of a binary droplet that freezes from the outside prior to the impact on the undercooled surface. We establish that the presence of pre-solidified material at the advancing contact line fundamentally changes the resulting dynamics, namely by modifying the local flow mobility that leads to an instability analogous to viscous fingering. Moreover, we delineate the interplay between the interfacial deformations of the impacting droplet and patterned growth of the solid-phase as disconnected patterns emerge at faster impacts.
Three-Loop Radiative-Recoil Corrections to Hyperfine Splitting Generated by One-Loop Fermion Factors
Creators: name: Eides, Michael I.
name: Grotch, Howard
name: Shelyuto, Valery A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We consider three-loop radiative-recoil corrections to hyperfine splitting in muonium generated by diagrams with one-loop radiative photon insertions both in the electron and muon lines. An analytic result for these nonlogarithmic corrections of order $α(Z^2α)(Zα)(m/M)\widetilde E_F$ is obtained. This result constitutes a next step in the implementation of the program of reduction of the theoretical uncertainty of hyperfine splitting below 10 Hz.
description: 11 pages, 3 figures, 1 table
The pluriactive development of agricultural holdings in Poland with regard to the living standards of their users
Creators: name: Augustyńska-Grzymek, Irena
name: Skarzyska, Aldona
name: Abramczuk, Łukasz
name: Augustyńska-Grzymek, Irena
name: Skarzyska, Aldona
name: Abramczuk, Łukasz
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: Farm Management
subject: Land Economics/Use
subject: Production Economics
subject: farm income
subject: off-farm income
subject: diversification of income
subject: economically weak farms

description: This paper illustrates the regional diversity in terms of the agricultural income of economically weak farms in Poland (i.e. from 2 to 8 ESU). The results, expressed as average values for 2005-2009, indicate that farms are finding themselves in a very difficult situation. Furthermore, the assessment included farms that gained their income not only through agricultural activity, but also through doing non-agricultural work. The diversification of income sources created the opportunity to sustain less profitable agricultural production while providing a higher standard of living for farmers and their families. Such factors as the intensity of production, and the productiveness of current expenditures and fixed capital, as well as the financial position of the farms and the level of their debt, have been analysed. An important aim of the study was to identify the influence of the Common Agricultural Policy on the performance of farms.
description: http://dx.doi.org/10.7896/j.1211
Performance MIDI-to-Score Conversion by Neural Beat Tracking: Pretrained models
Creators: name: Liu, Lele
name: Qiuqiang Kong
name: Morfi, Veronica
name: Benetos, Emmanouil
Publisher: name: Zenodo
Year: 2022
Subjects: automatic music transcription
music information retrieval
music signal analysis

description: These are the pre-trained models for the code in our paper: Lele Liu, Qiuqiang Kong, Veronica Morfi and Emmanouil Benetos, “Performance MIDI-to-Score Conversion by Neural Beat Tracking,” in Proceedings of the 23rd International Society for Music Information Retrieval Conference, Bengaluru, India, Dec 2022. The code release is available at https://github.com/cheriell/PM2S Funding: L. Liu conducted this work as an intern at ByteDance. L. Liu is a research student at the UKRI Centre for Doctoral Training in Artificial Intelligence and Music, supported jointly by the China Scholarship Council and Queen Mary University of London. The work of L. Liu is supported by The Alan Turing Institute through an Enrichment Scheme.
Competitiveness and Geographical Indications: the case of fruit spirits in Central and Eastern European countries
Creators: name: Torok, Aron
name: Jambor, Attila
name: Torok, Aron
name: Jambor, Attila
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Demand and Price Analysis
subject: International Relations/Trade
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: competitiveness
subject: geographical indications
subject: fruit spirits
subject: Central and Eastern Europe

description: In 2004 and 2007 twelve countries joined the European Union (EU), bringing about significant changes in the field of European agriculture. One of the major changes was the transformation of the agri-food trade of these countries. This paper analyses the effects of EU enlargement on the competitiveness of fruit spirits in six Central and Eastern European countries (CEECs), especially regarding geographical indications, by using the theory of revealed comparative advantages. Although the majority of the studied CEEC fruit spirits was both competitive and had a comparative advantage in the EU-15 beverages market in the period 2001-2011, during this time the competitiveness in terms of quality and price of fruit spirits in the region declined. The results indicate that these countries are losing their market positions in their traditional fruit spirit sector in the EU-15 beverages market in spite of the fact that the majority of these products have a geographical indication. These changes are in line with the overall trend of an increasing trade deficit in the overall beverages, spirits and vinegar market of the six CEECs with the EU-15 after 2003. By contrast, the well-known grappa of Italy is shown to be competitive in terms of both price and quality during this period. It is clear that such products with geographical indications can be competitive in European markets.
description: http://dx.doi.org/10.7896/j.1223
title: Take me home : designing, implementing and evaluating wayfinding prototypes for people with dementia
Creators: name: Wojtak, Markus
Publisher: name: TU Wien
Year: 2018
Subjects: subject: home
subject: designing
subject: dementia

description: With increasing life expectancy, the number of people with cognitive disabilities like dementia is increasing. While technological aids exist to aid them at home (e.g. assisted ambient living) or at nursing homes, research has shown that physical activity is beneficial to slowing the progress of memory decline. When leaving their home, people with dementia are at risk to forget where they live and therefore become lost. As most people use or at least carry smartphones that utilize global navigation satellite systems (GNSS) for location services, it seems logical to leverage the technology. While mapping and navigation apps such as Google Maps are helpful for a majority of people in this context, people with cognitive limitations may find them too hard to use as the respective user interface contains a large amount of elements and possible options. This thesis explores a new way of guiding individuals home by designing, implementing and evaluating two prototypes. The prototypes were initially inspired by an analog compass, or more specifically, the analogy of a needle pointing towards a predefined destination (i.e. north). However, unlike a traditional compass, the prototypes developed point towards the homes of users. The thesis first provides a brief summary on dementia before moving on to an overview of the technology behind global navigation satellite systems. The ideation process for both prototypes is covered in detail while providing an overview of the design process that led to the final versions of the prototypes. As the focus group includes people with cognitive limitations, requirements for the prototypes taking the needs of this specific group into account had to be determined first by forms of a literature study before starting with the design process. The first prototype developed is an iOS app while the second prototype is a physical device that is meant to be used in conjunction with the app. The informal evaluation suggests that the concept developed over the course of this thesis has the potential of successfully guiding individuals home as it has been positively received.
Implications of conceptual and data complexities on time-series econometric applications in market integration analysis
Creators: name: Abunyuwah, Isaac
name: Abunyuwah, Isaac
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Demand and Price Analysis
subject: International Relations/Trade
subject: market integration
subject: switching equilibria
subject: threshold models
subject: transactions costs

description: This article demonstrates and highlights the conceptual limits of current empirical market integration (MI) time series models (threshold models) and their implications on market efficiency and competitive equilibrium conclusions. The complexities and diversities that characterise the analysis of the concept of market integration are evaluated within the framework of Enke-Samuelson-Takayama-Judge (ESTJ) spatial equilibrium theory. The efficiency and competiveness implications drawn from MI models are limited by how the data generation process (DGP) is influenced by equilibrium conditions, by the tradability restrictions of the inter-markets relationships and by the presence of unobserved transactions costs. However, empirical applications scarcely address these limitations. Two sets of synthesized data with varying levels of non-linear complexity implied by alternating equilibrium conditions are generated to demonstrate conceptual limits of current threshold models in market integration analysis. Inconsistent conclusions that linear representations imply for threshold propagated DGP will also apply for conclusions derived from threshold models if markets are characterised by switching equilibria conditions.
description: http://dx.doi.org/10.7896/j.1219
Additional file 2 of Investigating longitudinal context-specific physical activity patterns in transition from primary to secondary school using accelerometers, GPS, and GIS
Creators: name: Remmers, Teun
name: Kann, Dave Van
name: Kremers, Stef
name: Ettema, Dick
name: Vries, Sanne I. De
name: Vos, Steven
name: Thijs, Carel
Publisher: name: figshare
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Plant Biology

description: Additional file 2. STROBE checklist.
Probabilistic multivariate electricity price forecasting using implicit generative ensemble post-processing
Creators: name: Janke, Tim
name: Steinke, Florian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: Econometrics (econ.EM)
subject: Risk Management (q-fin.RM)
subject: Statistical Finance (q-fin.ST)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: The reliable estimation of forecast uncertainties is crucial for risk-sensitive optimal decision making. In this paper, we propose implicit generative ensemble post-processing, a novel framework for multivariate probabilistic electricity price forecasting. We use a likelihood-free implicit generative model based on an ensemble of point forecasting models to generate multivariate electricity price scenarios with a coherent dependency structure as a representation of the joint predictive distribution. Our ensemble post-processing method outperforms well-established model combination benchmarks. This is demonstrated on a data set from the German day-ahead market. As our method works on top of an ensemble of domain-specific expert models, it can readily be deployed to other forecasting tasks.
description: To be presented at the 16th International Conference on Probabilistic Methods Applied to Power Systems 2020 (PMAPS 2020)
Magnetic Field in Clusters of Galaxies
Creators: name: Govoni, Federica
name: Feretti, Luigina
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The existence of magnetic fields associated with the intracluster medium in clusters of galaxies is now well established through different methods of analysis. Magnetic fields are investigated in the radio band from studies of the rotation measure of polarized radio galaxies and the synchrotron emission of cluster-wide diffuse sources. Other techniques include X-ray studies of the inverse Compton emission and of cold fronts and magneto hydrodynamic simulations. We review the main issues that have led to our knowledge on magnetic fields in clusters of galaxies. Observations show that cluster fields are at the $μ$G level, with values up to tens of $μ$G at the center of cooling core clusters. Estimates obtained from different observational approaches may differ by about an order of magnitude. However, the discrepancy may be alleviated by considering that the magnetic field is not constant through the cluster, and shows a complex structure. In particular, the magnetic field intensity declines with the cluster radius with a rough dependence on the thermal gas density. Moreover, cluster magnetic fields are likely to fluctuate over a wide range of spatial scales with values from a few kpc up to hundreds kpc. Important information on the cluster field are obtained by comparing the observational results with the prediction from numerical simulations. The origin of cluster magnetic fields is still debated. They might originate in the early Universe, either before or after the recombination, or they could have been deposited in the intracluster medium by normal galaxies, starburst galaxies, or AGN. In either case, magnetic fields undergo significant amplification during the cluster merger processes.
description: 43 pages, 12 figures, Review article to appear in International Journal of Modern Physics D
Overtwisted open books from sobering arcs
Creators: name: Goodman, Noah
Publisher: name: arXiv
Year: 2004
Subjects: subject: Geometric Topology (math.GT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 57R17, 57M99

description: We study open books on three manifolds which are compatible with an overtwisted contact structure. We show that the existence of certain arcs, called sobering arcs, is a sufficient condition for an open book to be overtwisted, and is necessary up to stabilization by positive Hopf-bands. Using these techniques we prove that some open books arising as the boundary of symplectic configurations are overtwisted, answering a question of Gay in Algebr. Geom. Topol. 3 (2003) 569--586.
description: Published by Algebraic and Geometric Topology at http://www.maths.warwick.ac.uk/agt/AGTVol5/agt-5-47.abs.html
Economic benefits of precision weed control and why its uptake is so slow
Creators: name: Takacs-Gyorgy, Katalin
name: Lencses, Eniko
name: Takacs, Istvan
name: Takacs-Gyorgy, Katalin
name: Lencses, Eniko
name: Takacs, Istvan
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Farm Management
subject: Land Economics/Use
subject: Livestock Production/Industries
subject: Political Economy
subject: Production Economics
subject: greening
subject: precision farming
subject: pest control
subject: technology uptake

description: Innovation in agriculture ensures the widespread use of the most up-to-date technology. One such technology is precision crop protection, which meets the requirement of environmental and economic sustainability. The applicability of precision crop protection has been verified by several studies and in practice, but its uptake is very slow. Examining the economic relationships between potential savings and pests at the European Union level, this paper shows that the savings in pesticide use following the adoption of precision plant protection can be 30,000 tonnes (calculated using the current dose levels) per annum. If approximately 30 per cent of the crop producing and mixed farms larger than 16 ESU apply this new technology, the environmental burden will be reduced by 10-35 per cent. From a survey of 72 Hungarian farmers we found a positive correlation between the size of the farm and the adoption of precision farming technology, and those farmers in the survey that had implemented precision crop production estimated that the consequent change in income had been positive. Thus, at a certain farm size and farming intensity, precision crop production is a real, environmental friendly farming strategy option, through which each farm can generate an income that covers at least the economic conditions of simple production. By encouraging environmentally friendly farming practice, precision crop production can meet the requirements of the proposed green component of Pillar 1 of the Common Agricultural Policy for the period 2014-2020.
description: http://dx.doi.org/10.7896/j.1222
Asymptotics of Schur functions on almost staircase partitions
Creators: name: Li, Zhongyang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study the asymptotics of Schur polynomials with partitions $λ$ which are almost staircase; more precisely, partitions that differ from $((m-1)(N-1),(m-1)(N-2),\ldots,(m-1),0)$ by at most one component at the beginning as $N\rightarrow \infty$, for a positive integer $m\ge 1$ independent of $N$. By applying either determinant formulas or integral representations for Schur functions, we show that $\frac{1}{N}\log \frac{s_λ(u_1,\ldots,u_k, x_{k+1},\ldots,x_N)}{s_λ(x_1,\ldots,x_N)}$ converges to a sum of $k$ single-variable holomorphic functions, each of which depends on the variable $u_i$ for $1\leq i\leq k$, when there are only finitely many distinct $x_i$'s and each $u_i$ is in a neighborhood of $x_i$, as $N\rightarrow\infty$. The results are related to the law of large numbers and central limit theorem for the dimer configurations on contracting square-hexagon lattices with certain boundary conditions.
Comparison of consumers' perceptions of organic products between the United States and Poland
Creators: name: Grzelak, Paweł
name: Maciejczak, Mariusz
name: Grzelak, Paweł
name: Maciejczak, Mariusz
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: Health Economics and Policy
subject: Marketing
subject: FOS: Economics and business
subject: consumer perception
subject: organic farming
subject: organic market

description: The paper aims at exploring further the potential of organic agriculture by increasing the knowledge about consumers’ perceptions of organic products. The United States (Florida) and Poland are interesting examples in which the level of organic market development varies and this allows us to test whether consumer perceptions of organic food products vary with market development. A survey was conducted amongst students at the University of Florida (United States) and at the Warsaw University of Life Sciences-SGGW (Poland). The results obtained from an online survey were analysed through econometric modelling. The model used for this study was the ordered probability model, which was used to compare the frequency of organic consumption between the United States and Polish students. The findings indicate that students from the two countries have different perceptions of organic products. The less the market is developed (such as in Poland), the more important is basic knowledge about the products. With a higher level of market development (for example in the United States), consumers already have this basic knowledge about the products, such as origin or organic label, and are more focused on their qualities, such as taste or variety. These differences should be taken into account by states when developing policies on organic agriculture and healthy eating generally, and during the formulation of marketing strategies by companies interested in the growth of the organic market.
description: http://dx.doi.org/10.7896/j.1302
Agricultural monopolistic competitor and the Pigovian tax
Creators: name: Jablanovic, Vesna D.
name: Jablanovic, Vesna D.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Demand and Price Analysis
subject: Production Economics
subject: monopolistic competition
subject: agriculture
subject: long-run
subject: equilibrium conditions
subject: the Pigovian tax rate
subject: chaos

description: A monopolistically competitive agricultural market structure has some features of competition and some features of monopoly. Monopolistic competition has the following attributes: (a) many sellers; (b) product differentiation; and (c) free entry. In the long-run equilibrium, price equals average total cost, and the agricultural firm earns zero economic profit. The aim of this paper is to construct a relatively simple chaotic long-run monopolistic competitor’s agricultural output growth model that is capable of generating stable equilibria, cycles or chaos. A key hypothesis of this work is based on the idea that the coefficient plays a crucial role in explaining local stability of the monopolistic competitor’s agricultural output, where d is the coefficient of the marginal cost function of the agricultural monopolistic competitor; b is the coefficient of the inverse demand function; [] is the coefficient of average cost growth; m is the Pigovian tax rate; and e is the coefficient of the price elasticity of demand.
description: http://dx.doi.org/10.7896/j.1224
Typology of farm management decision-making research
Creators: name: Kim, Jong-Sun
name: Cameron, Donald
name: Kim, Jong-Sun
name: Cameron, Donald
Publisher: name: Unknown
Year: 2013
Subjects: subject: Farm Management
subject: Research and Development/Tech Change/Emerging Technologies
subject: Research Methods/ Statistical Methods
subject: Farm management
subject: research
subject: typology
subject: decision-making

description: A review of 183 papers published between 1990 and 2006 led to development of a typology of farm management decision-making (FMDM) research. An existing model which categorises decision research according to purpose as being either Analytical (descriptive), Normative, or Prescriptive was blended with a second form of categorisation based on six emergent decision domains: (1) factors; (2) processes; (3) events; (4) evaluation; (5) patterns; and (6) aids. The result was a typology of seven main discernible types of FMDM research with four being Analytical in purpose (Factors, Processes, Events and Patterns), two being Normative (Event and Evaluation), and the last being Prescriptive Aid. Each of these types is outlined and examples of representative publications listed. Finally, some trends in publication patterns, in accord with this typology, are presented. This work is presented in the hope it helps readers to navigate more easily though a large and complex literature.
Additional file 1 of Prognostic model based on the geriatric nutritional risk index and sarcopenia in patients with diffuse large B-cell lymphoma
Creators: name: Se-Il Go
name: Hoon-Gu Kim
name: Kang, Myoung Hee
name: Sungwoo Park
name: Gyeong-Won Lee
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: Computational Biology

description: Additional file 1: Table S1. Comparison of predictive performance between the Cox regression models for overall survival.
Estimating the economic impact of the adoption of novel non-crate sow farrowing systems in the UK
Creators: name: Cain, P.J.
name: Guy, J.G.
name: Seddon, Y.
name: Baxter, Emma M.
name: Edwards, S.E.
name: Cain, P.J.
name: Guy, J.G.
name: Seddon, Y.
name: Baxter, Emma M.
name: Edwards, S.E.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Livestock Production/Industries
subject: Production Economics
subject: farrowing sow
subject: animal welfare
subject: pig
subject: housing system
subject: cost of production

description: The majority of indoor sows in the UK (around 95 per cent) farrow in conventional farrowing crates. There is pressure from a number of quarters – EU and national regulators, supermarket buyers and consumers – to improve the welfare of sows by adopting ‘‘free’’ farrowing systems. A DEFRA-funded project (under the acronym PigSAFE) conducted by Newcastle University and the Scottish Agricultural College (SAC) has developed and tested such a non-crate farrowing system. The trial monitored the costs and pig performance of over 450 sows which farrowed in either PigSAFE pens or conventional farrowing crates. The data generated in this work were used to construct spreadsheet-based budgeting models and linear programming (LP) models to assess the comparative economic performance of the two systems and determine the likely uptake of the new system. The results suggest that the cost of production under the new farrowing system would be about 1.6% higher than the conventional farrowing crate while pig performance was comparable in the two systems. A survey showed that UK producers were prepared to consider the new systems when renewing their farrowing accommodation, although the modelling exercise suggests that a price premium would still be required to ensure the viability of the new systems.
Recent developments in light-front dynamics
Creators: name: Karmanov, V. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent results on relativistic few body systems, obtained in the framework of light-front dynamics, are briefly reviewed. The following subjects are discussed: two scalar bosons with ladder and cross ladder kernel; two fermions with OBE kernel; relativistic scattering (elastic and inelastic); three bosons and fermions with zero-range interaction; many-body contributions.
description: 5 pages, 4 figures, to appear in the proceedings of the 19th European Conference on Few-Body Problems in Physics, Groningen, The Netherlands, August 23-27, 2004
On primes p for which d divides ord_p(g)
Creators: name: Moree, Pieter
Publisher: name: arXiv
Year: 2004
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11N37; 11R45

description: Let N_g(d) be the set of primes p such that the order of g modulo p is divisible by a prescribed integer d. Wiertelak showed that this set has a natural density and gave a rather involved explicit expression for it. Let N_g(d)(x) be the number of primes p<=x that are in N_g(d). A simple identity for N_g(d)(x) is established. It is used to derive a more compact expression for the natural density than known hitherto. A numerical demonstration, using a program of Y. Gallot, is presented.
description: 10 pages, 3 tables
Gold, black gold, and farmland: should they all be part of your investment portfolio?
Creators: name: Painter, Marvin J.
name: Painter, Marvin J.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agricultural Finance
subject: Land Economics/Use
subject: investment portfolio performance
subject: farmland real estate investment trust

description: Can traditional investors improve financial performance by adding a farmland real estate investment trust (F-REIT), gold and oil to their investment portfolios? This study shows that for the period 1972–2011, financial performance was significantly improved with the addition of F-REIT, gold and oil to a portfolio of traditional investments of T-bills, bonds, stocks and REITs. A Canadian F-REIT is considered relatively low risk, enters the efficient portfolios at low to medium risk levels and adds the most financial improvement to medium risk portfolios. Gold and Oil are higher risk assets with no dividend yield but because of their low correlations with other assets, they are able to reduce portfolio risk and add significant financial improvement in all portfolios.