cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nonparametric Estimation and Conformal Inference of the Sufficient Forecasting with a Diverging Number of Factors
Creators: name: Yu, Xiufan
name: Yao, Jiawei
name: Xue, Lingzhou
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: 111714 Mental Health
subject: FOS: Health sciences

description: The sufficient forecasting (Fan et al., 2017) provides a nonparametric procedure to estimate forecasting indices from high-dimensional predictors to forecast a single time series, allowing for the possibly nonlinear forecasting function. This paper studies the asymptotic theory of the sufficient forecasting with a diverging number of factors and develops its predictive inference. Firstly, we revisit the sufficient forecasting and explore its connections to Fama-Macbeth regression and partial least squares. Secondly, with a diverging number of factors, we derive the rate of convergence of the estimated factors and loadings and characterize the asymptotic behavior of the estimated sufficient forecasting directions. Thirdly, we use the local linear regression to estimate the possibly nonlinear forecasting function and obtain the rate of convergence. Fourthly, we construct the distribution-free conformal prediction set for the sufficient forecasting that accounts for the serial dependence. Moreover, we demonstrate the finite-sample performance of the proposed nonparametric estimation and conformal inference in simulation studies and a real application to forecast financial time series.
Strange Quark Mass from Tau Lepton Decays with O(alpha_s^3) Accuracy
Creators: name: Baikov, P. A.
name: Chetyrkin, K. G.
name: Kühn, J. H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The first complete calculation of the quadratic quark mass correction to the correlator of the two currents relevant for the strangeness-changing semihadronic tau-decay rate is presented including its real part at the four-loop level. This allows to perform the extraction of the strange quark mass m_s from the decay width of the tau-lepton with full O(alpha_s^3) accuracy. In agreement with previous estimates the newly computed alpha_s^3 term proves to be rather large. This justifies inclusion of the similarly estimated alpha_s^4 term in phenomenological analysis. Combined with an updated value of V_{us} and an ``'improved'' version of the renormalization group improvement of the perturbative series this leads to an increase of the central value of m_s by about 20 % and a partial reduction of the theoretical uncertainty by about 50 %.
description: 4 pages. References updated. The final version accepted for publication in Physical Review Letters. The complete paper is also available via the www at http://www-ttp.physik.uni-karlsruhe.de/Preprints/
Experimental Economics and the Environment: Eliciting Values for Controversial Goods
Creators: name: Shogren, Jason F.
name: Parkhurst, Gregory M.
name: Hudson, Darren
name: Shogren, Jason F.
name: Parkhurst, Gregory M.
name: Hudson, Darren
Publisher: name: Unknown
Year: 2010
Subjects: subject: Crop Production/Industries
subject: Institutional and Behavioral Economics
subject: experiments
subject: willingness to pay
subject: willingness to accept
subject: positive and negative induced values

description: We illustrate the experimental method by examining bidding behavior for controversial goods, i.e., goods in which bidders have positive and negative values. Our results suggest that bidding behavior differs across auction type. Bidders with positive induced values bid sincerely in a WTP auction. Bidders bid conservatively, however, in the WTA auction, foregoing profitable opportunities. Informing bidders of their optimal strategy serves to attenuate bidding discrepancies but does not eliminate them. Treating the WTP and WTA auctions as equivalent given positive and negative values could lead one to overstate the costs relative to the benefits of the controversial good.
Commutator-free Lie group methods with minimum storage requirements and reuse of exponentials
Creators: name: Bazavov, Alexei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: A new format for commutator-free Lie group methods is proposed based on explicit classical Runge-Kutta schemes. In this format exponentials are reused at every stage and the storage is required only for two quantities: the right hand side of the differential equation evaluated at a given Runge-Kutta stage and the function value updated at the same stage. The next stage of the scheme is able to overwrite these values. The result is proven for a 3-stage third order method and a conjecture for higher order methods is formulated. Five numerical examples are provided in support of the conjecture. This new class of structure-preserving integrators has a wide variety of applications for numerically solving differential equations on manifolds.
description: 41 pages, 10 figures. Minor revisions to bring the preprint in line with the final published version. The published version is slightly shortened in the introductory part
Commodity Exchange and Institutional Changes: Case of Iranian Agricultural Commodity Exchange
Creators: name: Soltanpour, Yazdan
name: Soltanpour, Yazdan
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Institutional and Behavioral Economics
subject: Political Economy
subject: Agricultural Commodity Exchange
subject: institutional economics
subject: Iran

description: In this study, an attempt is to figure out the institutional changes that initiate the agricultural commodity exchange (ACE). To assess the affecting factors, new institutional economics approach has been chosen. The framework consisting of four levels of social analysis introduced by Oliver E. Williamson is used to analyze the social environment, institutional rules, institutional arrangements and finally the agency level economics (Neo-classical economics). Regarding this framework, the institutional changes that have initiated the Iranian ACE is analyzed and its constraints to further improvement are discussed.
Leverage, asymmetry and heavy tails in the high-dimensional factor stochastic volatility model
Creators: name: Li, Mengheng
name: Scharth, Marcel
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: We develop a factor stochastic volatility model that incorporates leverage effects, return asymmetry, and heavy tails across all systematic and idiosyncratic model components. Our model leads to a flexible high-dimensional dependence structure that allows for time-varying correlations, tail dependence and volatility response to both systematic and idiosyncratic return shocks. We develop an efficient Markov chain Monte Carlo (MCMC) algorithm for posterior estimation based on the particle Gibbs, ancestor sampling, particle efficient importance sampling methods and interweaving strategy. To obtain parsimonious specifications in practice, we build computationally efficient model selection directly into our estimation algorithm. We validate the performance of our proposed estimation method via simulation studies with different model specifications. An empirical study for a sample of US stocks shows that return asymmetry is a systematic phenomenon and our model outperforms other factor models for value-at-risk evaluation.
Project : family
Creators: name: Maggio, Lauren Ann
Publisher: name: University of British Columbia
Year: 2009

description: A middle grade children's literature novel about a soon to be nine year old boy, Patrick, who is struggling to find his place in his lively family, in his classroom, and as the guest of honor at his ninth birthday party. As the third son of four, Patrick narrates a humorous view of his hectic family life complete with brotherly revenge and breakfast table flatulence. Woven into Patrick's narrative are his very real feelings toward the family's tight budget, his relationships with his brothers and parents, his weight problem, and his angst surrounding his upcoming birthday party. As every year, Patrick's well-intentioned, but somewhat misguided Mum plans a costume party for his birthday, which is close to Halloween. Faced with the possibility that his classmates might "forget" his party again this year, Patrick tries to deter his mother, but with little success. In addition to Patrick's efforts to craft a birthday party escape plan, he also gets stuck being partnered with Amelia, a spunky, but utterly geeky classmate, for a project. Like his birthday party, Patrick can find no way out of this project in which he and Amelia must examine families. Despite initial reluctance, the pair become friends. Through this friendship Patrick begins to better understand and appreciate his own family, which in the end he realizes make the best birthday party guests of all.
Professional learning and development needs of Chinese university-based physical education teacher educators
Creators: name: Gong, Yueying
name: Mac Phail, Ann
name: Guberman, Ainat
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 4207
subject: Sports science and exercise
classificationCode: 39
subject: Education

description: This study examines the professional learning and development (PLD) needs of Chinese university-based physical education teacher educators (PETEds) and their views about effective ways to address them. This is significant given the limited research exploring this group. A European-wide survey was translated and distributed in China, receiving 251 responses of PETEds from 28 provinces. We found that the majority of PETEds had a strong desire to undertake further PLD in three areas: subject knowledge and didactics with particular emphasis on professional training in specific types of sports, research related academic activities and institutional activities. They preferred formal learning programmes as well as international learning activities to address these needs. The cost of the activities was the most significant factor influencing their engagement. We recommend paying closer attention to the PLD needs of specific subject area groups of teacher educators.
Bulk and Collective Properties of a Dilute Fermi Gas in the BCS-BEC Crossover
Creators: name: Manini, N.
name: Salasnich, L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the zero-temperature properties of a dilute two-component Fermi gas with attractive interspecies interaction in the BCS-BEC crossover. We build an efficient parametrization of the energy per particle based on Monte Carlo data and asymptotic behavior. This parametrization provides, in turn, analytical expressions for several bulk properties of the system such as the chemical potential, the pressure and the sound velocity. In addition, on the basis of a local polytropic equation of state, we determine the collective modes of the Fermi gas under harmonic confinement in the framework of the hydrodynamic theory. The calculated collective frequencies are compared to experimental data on confined vapors of $^6$Li atoms and with other theoretical predictions.
description: 4 pages, 3 figures; improved version with a numerical calculation of the collective frequencies based on TDDFT
A Bayesian quantile time series model for asset returns
Creators: name: Griffin, J. E.
name: Mitrodima, G.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Ecology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: We consider jointly modelling a finite collection of quantiles over time. Formal Bayesian inference on quantiles is challenging since we need access to both the quantile function and the likelihood. We propose a flexible Bayesian time-varying transformation model, which allows the likelihood and the quantile function to be directly calculated. We derive conditions for stationarity, discuss suitable priors and describe a Markov chain Monte Carlo algorithm for inference. We illustrate the usefulness of the model for estimation and forecasting on stock, index, and commodity returns.
A Microeconomic Model for Subsidies Allocation: the Case of Belarus
Creators: name: Svetlov, Nikolai M.
name: Kazakevich, Iryna A.
name: Svetlov, Nikolai M.
name: Kazakevich, Iryna A.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Institutional and Behavioral Economics
subject: Political Economy
subject: Microeconomic model
subject: data envelopment
subject: subsidies
subject: Belarus

description: The paper develops a microeconomic methodological framework that allows approaching subsidy allocation across the types of assets and impact of subsidies on agricultural outputs and profits. The methodology is based on a non-parametric production frontier estimation. The empirical application is made to 1084 Belarusian corporate farms. The results suggest targeting governmental support at grain and milk production. In this case, 4.14 trillion Belarusian roubles of subsidies increase the overall profit of the sample farms by 1.46 trillion. In the case of targeting, the farms with higher overall efficiency are more sensitive to the support and are able to absorb larger amount of subsidies. The opposite is true in the absence of targeting.
Microbial Active Matter: A Topological Framework
Creators: name: Sengupta, Anupam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Topology transcends boundaries that conventionally delineate physical, biological and engineering sciences. Our ability to mathematically describe topology, combined with our access to precision tracking and manipulation approaches, has triggered a fresh appreciation of topological ramifications, specifically in mediating key functions in biological systems spanning orders of magnitude in length and time scales. Microbial ecosystems, a frequently encountered example of living matter, offer a rich test bed where the role of topological defects and their mechanics can be explored in the context of microbial composition, structure and functions. Emergent processes, triggered by anisotropy and activity characteristic of such structured, out-of-equilibrium systems, underpin fundamental properties in microbial systems. An inevitable consequence of anisotropy is the long-range orientational (or positional) correlations, which give rise to topological defects nucleating due to spontaneous symmetry breaking. The scene stealer of this emerging cross-disciplinary field is the topological defects: singularities embedded within the material field that elicit novel, if not unexpected, dynamics that are at the heart of active processes underpinning soft and living matter systems. In this short review, I have put together a summary of the key recent advances that highlight the interface of liquid crystal physics and the physical ecology of microbes; and combined it with original experimental data on sessile species as a case to demonstrate how this interface offers a biophysical framework that could help to decode and harness active microbial processes in 'true' ecological settings. Topology and its functional manifestations - a crucial and well-timed topic - offer a rich opportunity for both experimentalists and theoreticians willing to take up an exciting journey across scales and disciplines.
description: 9 pages, 5 figures
Additional file 5 of New haplochromine cichlid from the upper Miocene (9–10 MYA) of Central Kenya
Creators: name: Altner, Melanie
name: Ruthensteiner, Bernhard
name: Reichenbacher, Bettina
Publisher: name: figshare
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Geology
subject: FOS: Earth and related environmental sciences

description: Additional file 5. Character list and states used for phylogenetic analysis (compiled from Stiassny, [85]).
An Experimental Analysis of Auctioning Emission Allowances Under a Loose Cap
Creators: name: Shobe, William
name: Palmer, Karen L.
name: Myers, Erica
name: Holt, Charles
name: Goeree, Jacob K.
name: Burtraw, Dallas
name: Shobe, William
name: Palmer, Karen L.
name: Myers, Erica
name: Holt, Charles
name: Goeree, Jacob K.
name: Burtraw, Dallas
Publisher: name: Unknown
Year: 2010
Subjects: subject: Environmental Economics and Policy
subject: Resource /Energy Economics and Policy
subject: auction
subject: carbon dioxide
subject: greenhouse gases
subject: allowance trading
subject: Regional Greenhouse Gas Initiative
subject: RGGI
subject: cap and trade

description: The direct sale of emission allowances by auction is an emerging characteristic of cap-and-trade programs. This study is motivated by the observation that all of the major implementations of cap-and-trade regulations for the control of air pollution have started with a generous allocation of allowances relative to recent emissions history, a situation we refer to as a “loose cap.” Typically more stringent reductions are achieved in subsequent years of a program. We use an experimental setting to investigate the effects of a loose cap environment on a variety of auction types. We find that all auction formats studied are efficient in allocating emission allowances, but auction revenues tend to be lower relative to competitive benchmarks when the cap is loose. Regardless of whether the cap is tight or loose, the different auction formats tend to yield comparable revenues toward the end of a series of auctions. However, aggressive bidding behavior in initial discriminatory auctions yields higher revenues than in the other auction formats, a difference that disappears as bidders learn to adjust their bids closer to the cut-off that separates winning and losing bids.
Cyberattack on the Microgrids Through Price Modification
Creators: name: Mishra, Subhankar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Computers and Society (cs.CY)
subject: Social and Information Networks (cs.SI)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Recent massive failures in the power grid acted as a wake up call for all utilities and consumers. This leads to aggressive pursue a more intelligent grid which addresses the concerns of reliability, efficiency, security, quality and sustainability for the energy consumers and producers alike. One of the many features of the smart grid is a discrete energy system consisting of distributed energy sources capable of operating independently from the main grid known as the microgrid. The main focus of the microgrid is to ensure a reliable and affordable energy security. However, it also can be vulnerable to cyber attack and we study the effect of price modification of electricity attack on the microgrid, given that they are able to operate independently from the main grid. This attack consists of two stages, 1) Separate the microgrids from the main grid (islanding) and 2) Failing the nodes inside the microgrid. Empirical results on IEEE Bus data help us evaluate our approach under various settings of grid parameters.
description: 10 pages, ACM MobiHoc Workshop
ERON ISLOM RESPUBLIKASINING JAHON ENERGIYA  BOZORIDAGI ROLI
Creators: name: Mamajonova, Madinabonu
Publisher: name: Zenodo
Year: 2024

description: Eron dunyoning eng boy neft va gaz zaxiralariga ega davlatlardan biri hisoblanadi. Jahon energiya bozoridagi Eronning ta’siri ko‘plab omillarga, jumladan, energiya resurslari, geosiyosiy vaziyat va xalqaro sanksiyalar kabi omillarga bog‘liq. Eronning energetika siyosati nafaqat uning iqtisodiy rivojlanishiga, balki global energiya xavfsizligiga ham ta’sir ko‘rsatadi. Shuningdek, olimlar Eronning energiya resurslari global bozorda qanday rol o‘ynashi haqida turli fikrlar bildirmoqda.
Gestion du deploiement de composants sur reseau P2P
Creators: name: Frenot, Stephane
Publisher: name: arXiv
Year: 2004
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The deployment of component-based applications relies on a centralized directory to store the components. This paper describes an approach to distribute software components to be deployed on a set of peers of a peer to peer network in order to exploit some associated characteristics (load balancing, fault-tolerance, self-organisation). The proposed architecture is situated in the context of OSGI application deployment management. The software components (bundles) are distributed among a set of nodes participating in the execution of services. When a node wants to install a component which is not deployed locally, the component is looked for and installed using a p2p network. ----- Le deploiement d'applications a composants repose sur une approche d'annuaire centralise de stockage des composants. Cet article decrit une approche pour distribuer les composants logiciels a deployer sur un ensemble de noeuds d'un reseau pair-a-pair afin de pouvoir exploiter certaines caracteristiques associees (equilibrage de charge, tolerance de panne, auto-organisation). L'architecture proposee entre dans le cadre de la gestion du deploiement d'applications sur le modele OSGi. Les composants logiciels (ou bundles) sont repartis a travers un ensemble de noeuds participant a l'execution de services. Lorsqu'un noeud veut installer un composant et si celui-ci n'est pas encore deploye localement, il est recherche et installe en utilisant un reseau p2p
RISE Controller Tuning and System Identification Through Machine Learning for Human Lower Limb Rehabilitation via Neuromuscular Electrical Stimulation
Creators: name: Arcolezi, Héber H.
name: Nunes, Willian R. B. M.
name: de Araujo, Rafael A.
name: Cerna, Selene
name: Sanches, Marcelo A. A.
name: Teixeira, Marcelo C. M.
name: de Carvalho, Aparecido A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Neuromuscular electrical stimulation (NMES) has been effectively applied in many rehabilitation treatments of individuals with spinal cord injury (SCI). In this context, we introduce a novel, robust, and intelligent control-based methodology to closed-loop NMES systems. Our approach utilizes a robust control law to guarantee system stability and machine learning tools to optimize both the controller parameters and system identification. Regarding the latter, we introduce the use of past rehabilitation data to build more realistic data-driven identified models. Furthermore, we apply the proposed methodology for the rehabilitation of lower limbs using a control technique named the robust integral of the sign of the error (RISE), an offline improved genetic algorithm optimizer, and neural network models. Although in the literature, the RISE controller presented good results on healthy subjects, without any fine-tuning method, a trial and error approach would quickly lead to muscle fatigue for individuals with SCI. In this paper, for the first time, the RISE controller is evaluated with two paraplegic subjects in one stimulation session and with seven healthy individuals in at least two and at most five sessions. The results showed that the proposed approach provided a better control performance than empirical tuning, which can avoid premature fatigue on NMES-based clinical procedures.
description: 49 pages, 16 figures, 5 tables
Use of Coordination Fields in Food Economics
Creators: name: Toth, Jozsef
name: Toth, Jozsef
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Institutional and Behavioral Economics
subject: Political Economy
subject: exchange
subject: coordination
subject: institutions
subject: governance structure

description: The coordination plays central role in the economics. The conventional economic theory looks at the market and enterprise (or hierarchy) as two different, separated manner of coordination of economic goods and services. However the modern organization theory, price theory and institutional economics show that different types (not only market and enterprise, but also several types of hybrid forms) of coordination (or governance structure) necessarily live together in the current economic system. Based on my previous research on the field of regional clusters in the food industry I came to the conclusion that the cluster is one of the spheres where economic coordination can occur. At the same time I pointed out that the ways of coordination can be ordered on an ordinary scale according to its normative or positive nature. * Research was supported by Hungarian funds OTKA T 046882 and NKFP 4_014_04. I’ve also found that the choice between the coordination spheres (market, enterprise or cluster) is not arbitrary, but instead depends on the interest’s dimension which is represented by the exchange of goods and services in question.
Counterfactual Treatment Effects: Estimation and Inference
Creators: name: Hsu, Yu-Chin
name: Lai, Tsung-Chih
name: Lieli, Robert P.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: This article proposes statistical methods to evaluate the quantile counterfactual treatment effect (QCTE) if one were to change the composition of the population targeted by a status quo program. QCTE enables a researcher to carry out an ex-ante assessment of the distributional impact of certain policy interventions or to investigate the possible explanations for treatment effect heterogeneity. Assuming unconfoundedness and invariance of the conditional distributions of the potential outcomes, QCTE is identified and can be nonparametrically estimated by a kernel-based method. Viewed as a random function over the continuum of quantile indices, the estimator converges weakly to a zero mean Gaussian process at the parametric rate. We propose a multiplier bootstrap procedure to construct uniform confidence bands, and provide similar results for average effects and for the counterfactually treated subpopulation. We also present Monte Carlo simulations and two counterfactual exercises that provide insight into the heterogeneous earnings effects of the Job Corps training program in the United States.
Measurement of the analyzing power of proton-carbon elastic scattering in the CNI region at RHIC
Creators: name: Jinnouchi, O.
name: Alekseev, I. G.
name: Bravar, A.
name: Bunce, G.
name: Dhawan, S.
name: Huang, H.
name: Igo, G.
name: Kanavets, V. P.
name: Kurita, K.
name: Okada, H.
name: Saito, N.
name: Spinka, H.
name: Svirida, D. N.
name: Wood, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The single transverse spin asymmetry, A_N, of the p-carbon elastic scattering process in the Coulomb Nuclear Interference (CNI) region was measured using an ultra thin carbon target and polarized proton beam in the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL). In 2004, data were collected to calibrate the p-carbon process at two RHIC energies (24 GeV, 100 GeV). A_N was obtained as a function of momentum transfer -t. The results were fit with theoretical models which allow us to assess the contribution from a hadronic spin flip amplitude.
description: Contribution to the proceedings of the 16th International Spin Physics Symposium, spin2004 (Trieste)
Counterfactual Analysis and Inference with Nonstationary Data
Creators: name: Masini, Ricardo
name: Medeiros, Marcelo C.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: Plant Biology

description: Recently, there has been growing interest in developing econometric tools to conduct counterfactual analysis with aggregate data when a single “treated” unit suffers an intervention, such as a policy change, and there is no obvious control group. Usually, the proposed methods are based on the construction of an artificial/synthetic counterfactual from a pool of “untreated” peers, organized in a panel data structure. In this paper, we investigate the consequences of applying such methodologies when the data comprise integrated processes of order 1, I(1), or are trend-stationary. We find that for I(1) processes without a cointegrating relationship (spurious case) the estimator of the effects of the intervention diverges, regardless of its existence. Although spurious regression is a well-known concept in time-series econometrics, they have been ignored in most of the literature on counterfactual estimation based on artificial/synthetic controls. For the case when at least one cointegration relationship exists, we have consistent estimators for the intervention effect albeit with a non-standard distribution. Finally, we discuss a test based on re-sampling which can be applied when there is at least one cointegration relationship or when the data is trend-stationary.
Fluctuations of temperature gradients in turbulent thermal convection
Creators: name: Sreenivasan, K. R.
name: Bershadskii, A.
name: Niemela, J. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Astrophysics (astro-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Broad theoretical arguments are proposed to show, formally, that the magnitude G of the temperature gradients in turbulent thermal convection at high Rayleigh numbers obeys the same advection-diffusion equation that governs the temperature fluctuation T, except that the velocity field in the new equation is substantially smoothed. This smoothed field leads to a -1 scaling of the spectrum of G in the same range of scales for which the spectral exponent of T lies between -7/5 and -5/3. This result is confirmed by measurements in a confined container with cryogenic helium gas as the working fluid for Rayleigh number Ra=1.5x10^{11}. Also confirmed is the logarithmic form of the autocorrelation function of G. The anomalous scaling of dissipation-like quantities of T and G are identical in the inertial range, showing that the analogy between the two fields is quite deep.
The dynamics of thin vibrated granular layers
Creators: name: Melby, P.
name: Reyes, F. Vega
name: Prevost, A.
name: Robertson, R.
name: Kumar, P.
name: Egolf, D. A.
name: Urbach, J. S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We describe a series of experiments and computer simulations on vibrated granular media in a geometry chosen to eliminate gravitationally induced settling. The system consists of a collection of identical spherical particles on a horizontal plate vibrating vertically, with or without a confining lid. Previously reported results are reviewed, including the observation of homogeneous, disordered liquid-like states, an instability to a `collapse' of motionless spheres on a perfect hexagonal lattice, and a fluctuating, hexagonally ordered state. In the presence of a confining lid we see a variety of solid phases at high densities and relatively high vibration amplitudes, several of which are reported for the first time in this article. The phase behavior of the system is closely related to that observed in confined hard-sphere colloidal suspensions in equilibrium, but with modifications due to the effects of the forcing and dissipation. We also review measurements of velocity distributions, which range from Maxwellian to strongly non-Maxwellian depending on the experimental parameter values. We describe measurements of spatial velocity correlations that show a clear dependence on the mechanism of energy injection. We also report new measurements of the velocity autocorrelation function in the granular layer and show that increased inelasticity leads to enhanced particle self-diffusion.
description: 11 pages, 7 figures
Keep It Down: An Experimental Test of the Truncated k-Double Auction
Creators: name: Doyon, Maurice
name: Rondeau, Daniel
name: Mbala, Richard
name: Doyon, Maurice
name: Rondeau, Daniel
name: Mbala, Richard
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Industrial Organization
subject: Institutional and Behavioral Economics
subject: k-double auction
subject: experimental economics
subject: truncated
subject: efficiency
subject: commodity market

description: The introduction of a centralized institution for trading production rights in quota-regulated agricultural sectors can dramatically improve the flow of information among market participants and increase efficiency. On the other hand, prevailing conditions in these small markets can provide sellers with a market advantage, yielding high quota prices that impose important financial costs on quota holders and limit the entry of new producers into the industry. In this paper, we modify the normal allocation rule of the k-double auction (kDA) to counter thin market conditions and to favor buyers who bid low prices. In laboratory experiments, we test the “truncated” kDA (T-kDA) against a regular kDA for its ability to affect buyer and seller behavior and decrease equilibrium prices, and assess how it impacts efficiency. The results show that the T-kDA significantly lowers the equilibrium price and results in moderate efficiency losses. Most importantly, the T-kDA effectively counters the market power of oligopolists when demand far outstrips supply.
Coexistency on Hilbert space effect algebras and a characterisation of its symmetry transformations
Creators: name: Geher, Gyorgy Pal
name: Semrl, Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 47B49, 81R15

description: The Hilbert space effect algebra is a fundamental mathematical structure which is used to describe unsharp quantum measurements in Ludwig's formulation of quantum mechanics. Each effect represents a quantum (fuzzy) event. The relation of coexistence plays an important role in this theory, as it expresses when two quantum events can be measured together by applying a suitable apparatus. This paper's first goal is to answer a very natural question about this relation, namely, when two effects are coexistent with exactly the same effects? The other main aim is to describe all automorphisms of the effect algebra with respect to the relation of coexistence. In particular, we will see that they can differ quite a lot from usual standard automorphisms, which appear for instance in Ludwig's theorem. As a byproduct of our methods we also strengthen a theorem of Molnar.
An Experimental Analysis of a Points-Based System for Managing Multispecies Fisheries
Creators: name: Anderson, Christopher M.
name: Anderson, Christopher M.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Environmental Economics and Policy
subject: Resource /Energy Economics and Policy
subject: multispecies fishery
subject: points system
subject: economic experiment
subject: quota
subject: derby

description: An industry group has proposed a novel system for managing the Northeast Multispecies Fishery. Each harvester would be endowed with a budget of points, and each species would have a “point price,” or number of points that must be paid out of his budget when landing that species. By varying the point prices throughout the season, management could redirect effort across species. This paper presents a benchmarked experimental testbed of this management system, and shows that harvesters do respond to point prices, which can be chosen to support harvest of most of the allowable catch of each species without severely over-harvesting any of them.
Additional file 1 of Meeting psychosocial needs to improve health: a prospective cohort study
Creators: name: Snowden, Austyn
name: Young, Jenny
name: Savinc, Jan
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
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: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Supplementary file 1. Changes over concern domains. Table reporting mean changes in HNA concern severity across physical, practical, emotional, family and lifestyle domains.
Producer Willingness and Ability to Supply Biomass
Creators: name: Altman, Ira J.
name: Sanders, Dwight R.
name: Moon, Wanki
name: Coulibaly, Ibrahima
name: Altman, Ira J.
name: Sanders, Dwight R.
name: Moon, Wanki
name: Coulibaly, Ibrahima
Publisher: name: Unknown
Year: 2010
Subjects: Agribusiness

description: Given the recent interest in renewable energy from agriculture based on row crop waste and energy crops, this paper takes a transaction cost view of biomass supply chain strategies. First an investigation of the biomass and bioenergy literature reveals a need for an organizational perspective on emerging bioenergy industries. Second, transaction cost economic theory is applied to the general relationship between biomass producer and processor. Finally the case of the Iogen Corporation is examined to identify their planned biomass supply chain strategy as they attempt to commercialize their cellulose ethanol technology. Two general options emerge: one where processors can choose to enter developed biomass areas and expect to use spot markets with low transaction costs but experience intense competition for biomass and another where the processor enters an undeveloped biomass area, expects the use of long term contracts with higher transaction costs but can expect less intense competition.
A phenomenological determination of the pion-nucleon scattering lengths from pionic hydrogen
Creators: name: Ericson, T. E. O.
name: Loiseau, B.
name: Wycech, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A model independent expression for the electromagnetic corrections to a phenomenological hadronic pion-nucleon scattering length, extracted from pionic hydrogen, is obtained. In a non-relativistic approach and using an extended charge distribution, these corrections are derived up to terms of order (alpha)**2 log(alpha) in the limit of a short-range hadronic interaction. We infer a charged pion-proton scattering length of 0.0870(5) in units of inverse pion mass, which gives for the charged pion-proton-neutron coupling, through the GMO relation, a value of 14.04(17).
description: Invited talk at the 10th International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon (MENU 2004), Beijing, China, August 29 - September 4, 2004
title: ÐÑÐµÐ´ÐµÐ»ÑÐ½ÑÐµ ÑÐµÐ½Ñ Ð² ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ½Ð¾Ð¼ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ðµ Ð¸ Ð¸Ñ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐ¸ÑÐº-Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð´Ñ Ð¾Ð´Ð°
title: Risk assessment in determining the marginal cost of construction of transport infrastructure objects
Creators: name: ÐÐ¸ÑÐ½ÐµÐ²ÐµÑÐºÐ°Ñ, ÐÐ»ÐµÐºÑÐ°Ð½Ð´ÑÐ°
name: "Ð£Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ ÑÐ¸ÑÐºÐ°Ð¼Ð¸: Ð½Ð¾Ð²ÑÐµ Ð²ÑÐ·Ð¾Ð²Ñ, Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ñ Ð¸ ÑÐµÑÐµÐ½Ð¸Ñ (Ð ÐÐ¡ÐâÐ­â2023)", Ð½Ð°ÑÑÐ½Ð¾-Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ°Ñ ÐºÐ¾Ð½ÑÐµÑÐµÐ½ÑÐ¸Ñ Ñ Ð·Ð°ÑÑÐ±ÐµÐ¶Ð½ÑÐ¼ ÑÑÐ°ÑÑÐ¸ÐµÐ¼ (2023; Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³)
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2024
Subjects: Ð¢ÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ½Ð¾Ðµ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð¾
ÐÐ°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ¸ÑÐºÐ¾Ð²
Ð¿ÑÐµÐ´ÐµÐ»ÑÐ½Ð°Ñ ÑÐµÐ½Ð°
ÑÐ¸ÑÐº-Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐ¹ Ð¿Ð¾Ð´Ñ Ð¾Ð´
ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ ÑÑÐ¾Ð¸Ð¼Ð¾ÑÑÑÑ
ÑÑÐ¾Ð²ÐµÐ½Ñ ÑÐ¸ÑÐºÐ°
ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ°Ñ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ
risk analysis
marginal price
riskbased approach
cost management
risk level
economic efficiency

description: Ð ÑÑÐ°ÑÑÐµ ÑÑÐ¾ÑÐ¼ÑÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð° Ð¿ÑÐ¾Ð±Ð»ÐµÐ¼Ð° Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ñ Ð¿ÑÐµÐ´ÐµÐ»ÑÐ½ÑÑ ÑÐµÐ½ Ð² ÑÑÐ°Ð½ÑÐ¿Ð¾ÑÑÐ½Ð¾Ð¼ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ðµ Ñ ÑÑÑÑÐ¾Ð¼ Ð½ÐµÐ´Ð¾ÑÑÐ°ÑÐ¾ÑÐ½Ð¾ÑÑÐ¸ Ð¸ÑÑÐ¾Ð´Ð½ÑÑ Ð´Ð°Ð½Ð½ÑÑ. Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½ Ð¼ÐµÑÐ°Ð½Ð¸Ð·Ð¼ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð»Ð¸Ð¼Ð¸ÑÐ°Ð¼Ð¸ ÑÐ¸Ð½Ð°Ð½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐ¸ÑÐº-Ð¾ÑÐ¸ÐµÐ½ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð°. ÐÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½ Ð¿ÐµÑÐµÑÐ¾Ð´ Ð¾Ñ Ð´Ð¸ÑÐºÑÐµÑÐ½Ð¾Ð³Ð¾ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ Ð¿ÑÐµÐ´ÐµÐ»ÑÐ½Ð¾Ð¹ ÑÐµÐ½Ñ Ðº Ð´Ð¸Ð°Ð¿Ð°Ð·Ð¾Ð½Ñ, Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÑÐµÐ¼Ð¾Ð¼Ñ Ñ ÑÑÑÑÐ¾Ð¼ Ð¼Ð°ÐºÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÑÐ¾Ð²Ð½Ñ ÑÐ¸ÑÐºÐ°, ÐºÐ¾ÑÐ¾ÑÑÐ¹ Ð¿ÑÐ¸ÐµÐ¼Ð»ÐµÐ¼ Ð´Ð»Ñ Ð±ÑÐ´Ð¶ÐµÑÐ° ÐºÐ¾Ð½ÐºÑÐµÑÐ½Ð¾Ð³Ð¾ Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ°.
description: The article formulates the problem of determining marginal prices in transport construction, taking into account the insufficiency of initial data. The mechanism for managing financing limits based on a riskbased approach is considered. The transition from the discrete value of the marginal price to the range determined taking into account the maximum level of risk that is acceptable for the budget of a particular investment project is proposed.
Additional file 2 of Meeting psychosocial needs to improve health: a prospective cohort study
Creators: name: Snowden, Austyn
name: Young, Jenny
name: Savinc, Jan
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
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: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2: Supplementary file 2. EQ-5D utility scores from relevant publications. Table of the highest and lowest mean EQ-5D utility scores for the same cancer types as our sample, obtained from international studies specifically designed to ascertain EQ-5D population norms on these cancer types.
King George’s diasporas : the treatment of ’hostile’ populations in Britain and Canada, 1745-1763
Creators: name: Wells, Andrew John
Publisher: name: University of British Columbia
Year: 2009

description: Studies of Acadians and Jacobites traditionally examine identity from a perspective within these groups. To comprehend their treatment at the hands of the British in the mid-eighteenth-century, they must be understood as the British saw them. Frenchness and Roman Catholicism were fundamental to Acadian and Jacobite identity as they were conceived by the British authorities in Scotland and Nova Scotia in 1745 and 1755, respectively. These facets of the identities were used to establish the treasonable nature of each group and explains their treatment by the British. As such, cultural forces are better suited than explicit hierarchical structures for explaining the Acadian derangement and the pacification following the 1745 rebellion.
Traveling quasi-periodic water waves with constant vorticity
Creators: name: Berti, Massimiliano
name: Franzoi, Luca
name: Maspero, Alberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 76B15, 37K55, 76D45 (37K50, 35S05)

description: We prove the first bifurcation result of time quasi-periodic traveling waves solutions for space periodic water waves with vorticity. In particular we prove existence of small amplitude time quasi-periodic solutions of the gravity-capillary water waves equations with constant vorticity, for a bidimensional fluid over a flat bottom delimited by a space-periodic free interface. These quasi-periodic solutions exist for all the values of depth, gravity and vorticity, and restricting the surface tension to a Borel set of asymptotically full Lebesgue measure.
description: 87 pages
Sustainable Economic, Marketing, Environmental and Financial Opportunities for Biogas Recovery Systems
Creators: name: Stegelin, Forrest E.
name: Stegelin, Forrest E.
Publisher: name: Unknown
Year: 2010
Subjects: Agribusiness

description: Livestock producers operating large-scale confinement operations, such as dairies, are looking for ways to handle and dispose of manure that are cost effective and efficiently meet odor and pollution policies. Farm level production of biogas using anaerobic digesters is one solution that helps control methane emissions. Methane is an odorless gas that can be used to generate electricity, develop fiber products (such as fiber boards, decking, cow pots and building materials) and potting medium as a soil or peat replacement and livestock bedding, establish carbon credits, or provide other value-added products like fertilizer and raw gas or transport fuel, thereby having marketability and economic value. Substantial environmental benefits of odor control, water quality protection, and greenhouse gas reductions also exist. Because of the tangible and intangible benefits possible from reducing methane emissions via anaerobic digesters, biogas recovery systems are prudent financially as well, with single-digit payback periods, double-digit simple rates of return, approximately $1 million (USD) in net present value, double-digit internal rates of return, and relatively large benefit-cost ratios associated with the savings over time.
Relating Quantum Information to Charged Black Holes
Creators: name: Ge, Xian-Hui
name: Shen, You-Gen
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum non-cloning theorem and a thought experiment are discussed for charged black holes whose global structure exhibits an event and a Cauchy horizon. We take Reissner-Norström black holes and two-dimensional dilaton black holes as concrete examples. The results show that the quantum non-cloning theorem and the black hole complementarity are far from consistent inside the inner horizon. The relevance of this work to non-local measurements is briefly discussed.
description: 14 pages, 2 figures