cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A high-rate foreground of sub-second flares from geosynchronous satellites
Creators: name: Nir, Guy
name: Ofek, Eran O.
name: Ben-Ami, Sagi
name: Segev, Noam
name: Polishook, David
name: Manulis, Ilan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Weizmann Fast Astronomical Survey Telescope (W-FAST) is a 55cm optical survey telescope with a high cadence (25Hz) monitoring of the sky over a wide field of view (~7deg^2). The high frame rate allows detection of sub-second transients over multiple images. We present a sample of ~0.1--0.3s duration flares detected in an un-targeted survey for such transients. We show that most, if not all of them, are glints of sunlight reflected off geosynchronous and graveyard orbit satellites. The flares we detect have a typical magnitude of 9--11, which translates to ~14--16th magnitude if diluted by a 30s exposure time. We estimate the rate of events brighter than ~11mag to be on the order of 30--40 events per day per deg^2, for declinations between -20 and +10^\circ, not including the declination corresponding to the geostationary belt directly above the equator, where the rate can be higher. We show that such glints are common in large area surveys (e.g., ZTF and LSST), and that some of them have a point-like appearance, confounding searches for fast transients such as Fast Radio Burst counterparts and Gamma-ray bursts. By observing in the direction of the Earth's shadow we are able to put an upper limit on the rate of fast astrophysical transients of 0.052deg^{-2}day^{-1} (95\% confidence limit) for events brighter than 11mag. We also suggest that the single image, high declination flare observed in coincidence with the GN-z11 galaxy and assumed to be a Gamma-ray burst, is also consistent with such a satellite glint.
description: 8 pages, 5 figures. Submitted to MNRAS
Factorization in B -> K pi e+e- decays
Creators: name: Grinstein, Benjamin
name: Pirjol, Dan
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive factorization relations for the transverse helicity amplitudes in the rare decays B-> Kπl+l- at leading order in Lambda/m_b, in the kinematical region with an energetic kaon and a soft pion. We identify and compute a new contribution of leading order in Lambda/m_b to the B->Kπl+l- amplitude, which is not present in the one-body decay B-> K*l+l-. As an application we study the forward-backward asymmetry (FBA) of the lepton momentum angular distribution in B-> Kπl+l- decays away from the K* resonance. The FBA in these decays has a zero at q0^2 = q0^2(M_{Kpi}), which can be used, in principle, for determining the Wilson coefficients C_{7,9} and testing the Standard Model. We point out that the slope of the q0^2(M_{Kpi}^2) curve contains the same information about the Wilson coefficients as the location of the zero, but is less sensitive to unknown nonperturbative dynamics. We estimate the location of the zero at leading order in factorization, and using a resonant model for the B -> Kπl+l- nonfactorizable amplitude.
description: 16 pages, 5 figures. Version to appear in Physical Review D. One new observable introduced and considered - the slope of the zero of the forward-backward asymmetry as function of the K\pi invariant mass
Discovery of unconventional chiral charge order in kagome superconductor KV3Sb5
Creators: name: Jiang, Yu-Xiao
name: Yin, Jia-Xin
name: Denner, M. Michael
name: Shumiya, Nana
name: Ortiz, Brenden R.
name: Xu, Gang
name: Guguchia, Zurab
name: He, Junyi
name: Hossain, Md Shafayat
name: Liu, Xiaoxiong
name: Ruff, Jacob
name: Kautzsch, Linus
name: Zhang, Songtian S.
name: Chang, Guoqing
name: Belopolski, Ilya
name: Zhang, Qi
name: Cochran, Tyler A.
name: Multer, Daniel
name: Litskevich, Maksim
name: Cheng, Zi-Jia
name: Yang, Xian P.
name: Wang, Ziqiang
name: Thomale, Ronny
name: Neupert, Titus
name: Wilson, Stephen D.
name: Hasan, M. Zahid
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Intertwining quantum order and nontrivial topology is at the frontier of condensed matter physics. A charge density wave (CDW) like order with orbital currents has been proposed as a powerful resource for achieving the quantum anomalous Hall effect in topological materials and for the hidden phase in cuprate high-temperature superconductors. However, the experimental realization of such an order is challenging. Here we use high-resolution scanning tunnelling microscopy (STM) to discover an unconventional charge order in a kagome material KV3Sb5, with both a topological band structure and a superconducting ground state. Through both topography and spectroscopic imaging, we observe a robust 2x2 superlattice. Spectroscopically, an energy gap opens at the Fermi level, across which the 2x2 charge modulation exhibits an intensity reversal in real-space, signaling charge ordering. At impurity-pinning free region, the strength of intrinsic charge modulations further exhibits chiral anisotropy with unusual magnetic field response. Theoretical analysis of our experiments suggests a tantalizing unconventional chiral CDW in the frustrated kagome lattice, which can not only lead to large anomalous Hall effect with orbital magnetism, but also be a precursor of unconventional superconductivity.
description: Orbital magnetism calculation added
Blanchfield and Seifert algebra in high-dimensional boundary link theory I: Algebraic K-theory
Creators: name: Ranicki, Andrew
name: Sheiham, Desmond
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Topology (math.AT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 19D50, 57Q45, 20E05

description: The classification of high-dimensional mu-component boundary links motivates decomposition theorems for the algebraic K-groups of the group ring A[F_mu] and the noncommutative Cohn localization Sigma^{-1}A[F_mu], for any mu>0 and an arbitrary ring A, with F_mu the free group on mu generators and Sigma the set of matrices over A[F_mu] which become invertible over A under the augmentation A[F_mu] to A. Blanchfield A[F_mu]-modules and Seifert A-modules are abstract algebraic analogues of the exteriors and Seifert surfaces of boundary links. Algebraic transversality for A[F_mu]-module chain complexes is used to establish a long exact sequence relating the algebraic K-groups of the Blanchfield and Seifert modules, and to obtain the decompositions of K_*(A[F_mu]) and K_*(Sigma^{-1}A[F_mu]) subject to a stable flatness condition on Sigma^{-1}A[F_mu] for the higher K-groups.
description: This is the version published by Geometry & Topology on 2 November 2006
Optimal Energy Investment and R&D Strategies to Stabilise Greenhouse Gas Atmospheric Concentrations
Creators: name: Carraro, Carlo
name: Bosetti, Valentina
name: Massetti, Emanuele
name: Tavoni, Massimo
name: Carraro, Carlo
name: Bosetti, Valentina
name: Massetti, Emanuele
name: Tavoni, Massimo
Publisher: name: Unknown
Year: 2007
Subjects: subject: Environmental Economics and Policy
subject: Climate Policy
subject: Energy R&D
subject: Investments
subject: Stabilisation Costs

description: The stabilisation of GHG atmospheric concentrations at levels expected to prevent dangerous climate change has become an important, global, long-term objective. It is therefore crucial to identify a cost-effective way to achieve this objective. In this paper we use WITCH, a hybrid climate-energy-economy model, to obtain a quantitative assessment of some cost-effective strategies that stabilise CO2 concentrations at 550 or 450 ppm. In particular, this paper analyses the energy investment and R&D policies that optimally achieve these two GHG stabilisation targets (i.e. the future optimal energy mix consistent with the stabilisation of GHG atmospheric concentrations at 550 and 450 ppm). Given that the model accounts for interdependencies and spillovers across 12 regions of the world, optimal strategies are the outcome of a dynamic game through which inefficiency costs induced by global strategic interactions can be assessed. Therefore, our results are somehow different from previous analyses of GHG stabilisation policies, where a central planner or a single global economy are usually assumed. In particular, the effects of free-riding incentives in reducing emissions and in investing in R&D are taken into account. Technical change being endogenous in WITCH, this paper also provides an assessment of the implications of technological evolution in the energy sector of different stabilisation scenarios. Finally, this paper quantifies the net costs of stabilising GHG concentrations at different levels, for different allocations of permits and for different technological scenarios. In each case, the optimal long-term investment strategies for all available energy technologies are determined. The case of an unknown backstop energy technology is also analysed.
D6.1 - Piloting Scenarios & Evaluation Plan
Creators: name: Marvin, Hans
name: Yamine Bouzembrak
name: Bulk, Leonieke Van Den
name: Gavai, Anand
name: Hoenderdaal, Wouter
name: Ningjing Liu
Publisher: name: Zenodo
Year: 2021
Subjects: food safety
big data
standards
certification

description: This document provides an overall guidance methodology for the pilot execution in TheFSM
 project. It sets out the whole process of developing and conducting a pilot and provides for each
 step a guidance on how to execute these activities in an optimal manner. A pilot consists of the
 following different steps: i) creation of a pilot plan, including a Data Management Handling Plan
 (DMHP), ii) preparation of the pilot, iii) deployment and testing of the pilot, iv) evaluation of the
 pilot results, v) making adaptations to the product tested in the pilot, vi) piloting the new revised
 product and vii) finalisation of the product. Each of these steps is described in detail including
 materials that are needed and made specific for the applications to be tested in the pilots. In
 addition, for each pilot and application a local DMHP will also be developed. An outline for such
 a DMHP is provided and it describes how relevant data during the pilot should be collected,
 processed or generated, how it should be curated and preserved, etc. This document also includes
 templates which should be completed for each pilot and application being tested. Finally, some
 supplementary materials are provided in the appendix.
Journal Status
Creators: name: Bollen, Johan
name: Rodriguez, Marko A.
name: Van de Sompel, Herbert
Publisher: name: arXiv
Year: 2006
Subjects: subject: Digital Libraries (cs.DL)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: H.3.7

description: The status of an actor in a social context is commonly defined in terms of two factors: the total number of endorsements the actor receives from other actors and the prestige of the endorsing actors. These two factors indicate the distinction between popularity and expert appreciation of the actor, respectively. We refer to the former as popularity and to the latter as prestige. These notions of popularity and prestige also apply to the domain of scholarly assessment. The ISI Impact Factor (ISI IF) is defined as the mean number of citations a journal receives over a 2 year period. By merely counting the amount of citations and disregarding the prestige of the citing journals, the ISI IF is a metric of popularity, not of prestige. We demonstrate how a weighted version of the popular PageRank algorithm can be used to obtain a metric that reflects prestige. We contrast the rankings of journals according to their ISI IF and their weighted PageRank, and we provide an analysis that reveals both significant overlaps and differences. Furthermore, we introduce the Y-factor which is a simple combination of both the ISI IF and the weighted PageRank, and find that the resulting journal rankings correspond well to a general understanding of journal status.
description: 16 pages
Production Offshoring and the Skill Composition of Italian Manufacturing Firms: A Counterfactual Analysis
Creators: name: Antonietti, Roberto
name: Antonioli, Davide
name: Antonietti, Roberto
name: Antonioli, Davide
Publisher: name: Unknown
Year: 2007
Subjects: subject: Labor and Human Capital
subject: Production Offshoring
subject: Skill Bias
subject: Difference-in-Differences
subject: Propensity

description: This work explores the effects of cross-border relocation of production on the skill composition of Italian manufacturing firms. Its aim is to assess if the firms' strategy to offshore production activities towards cheap labor countries determines a bias in the relative employment of skilled versus unskilled workers. Using a balanced panel of firm-based data across the period 1995-2003, we test this skill-bias hypothesis by means of a counterfactual experiment in which we employ a difference-in-differences propensity score matching estimator in order to control for selectivity bias without relying on a specific functional form of the relations of interest. In line with the literature, our results point to confirm a general, although weak, skill bias effect of production offshoring on the labor-force composition of Italian manufacturing: in particular, we find that firms farming out production stages in 1998-2000 show an upward shift in the skill ratio with respect to the counterfactual of firms not moving their production abroad. However, when we look at the single components of the skill ratio, we find that the skill bias effect is primarily driven by a fall in the employment of production workers, while a weak or not significant effect is found with respect to the employment of skilled personnel.
Forecasting Weekly Electricity Prices at Nord Pool
Creators: name: Torro, Hipolit
name: Torro, Hipolit
Publisher: name: Unknown
Year: 2007
Subjects: subject: Resource /Energy Economics and Policy
subject: electricity markets
subject: power derivatives
subject: forecasting electricity prices

description: This paper analyses the forecasting power of weekly futures prices at Nord Pool. The forecasting power of futures prices is compared to an ARIMAX model of the spot price. The time series model contains lagged external variables such as: temperature, precipitation, reservoir levels and the basis (futures price less the spot price); and generally reflects the typical seasonal patterns in weekly spot prices. Results show that the time series model forecasts significantly beat futures prices when using the Diebold and Mariano (1995) test. Furthermore, the average forecasting error of futures prices reveals that they are significantly above the settlement spot price at the 'delivery week' and their size increases as the time to maturity increases. Those agents taking positions in weekly futures contracts at Nord Pool might find the estimated ARIMAX model useful for improving their expectation formation process for the underlying spot price.
description: Paper replaced with revised version 02/06/09.
Dual quark condensate and dressed Polyakov loops
Creators: name: Bilgici, Erek
name: Bruckmann, Falk
name: Gattringer, Christof
name: Hagen, Christian
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a new order parameter for finite temperature QCD by considering the quark condensate for U(1)-valued temporal boundary conditions for the fermions. Fourier transformation with respect to the boundary condition defines the dual condensate. This quantity corresponds to an equivalence class of Polyakov loops, thereby being an order parameter for the center symmetry. We explore the duality relation between the quark condensate and these dressed Polyakov loops numerically, using quenched lattice QCD configurations below and above the QCD phase transition. It is demonstrated that the Dirac spectrum responds differently to changing the boundary condition, in a manner that reproduces the expected Polyakov loop pattern. We find the dressed Polyakov loops to be dominated by the lowest Dirac modes, in contrast to thin Polyakov loops investigated earlier.
description: Several comments added; final version to appear in PRD
Quantized transport induced by topology transfer between coupled one-dimensional lattice systems
Creators: name: Wawer, Lukas
name: Li, Rui
name: Fleischhauer, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We show that a topological pump in a one-dimensional (1D) insulator can induce a strictly quantized transport in an auxiliary chain of non-interacting fermions weakly coupled to the first. The transported charge is determined by an integer topological invariant of the ficticious Hamiltonian of the insulator, given by the covariance matrix of single-particle correlations. If the original system consists of non-interacting fermions, this number is identical to the TKNN (Thouless, Kohmoto, Nightinghale, den Nijs) invariant of the original system and thus the coupling induces a transfer of topology to the auxiliary chain. When extended to particles with interactions, for which the TKNN number does not exist, the transported charge in the auxiliary chain defines a topological invariant for the interacting system. In certain cases this invariant agrees with the many-body generalization of the TKNN number introduced by Niu, Thouless, and Wu (NTW). We illustrate the topology transfer to the auxiliary system for the Rice-Mele model of non-interacting fermions at half filling and the extended superlattice Bose-Hubbard model at quarter filling. In the latter case the induced charge pump is fractional.
The emergence of passive galaxies in the early Universe
Creators: name: Santini, P.
name: Castellano, M.
name: Merlin, E.
name: Fontana, A.
name: Fortuni, F.
name: Kodra, D.
name: Magnelli, B.
name: Menci, N.
name: Calabrò, A.
name: Lovell, C. C.
name: Pentericci, L.
name: Testa, V.
name: Wilkins, S. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The emergence of passive galaxies in the early Universe results from the interplay among the processes responsible for their rapid assembly and for the abrupt shut-down of their SF. Investigating the individual properties and demographics of early passive galaxies will improve our understanding of these mechanisms. In this work we present a follow-up analysis of the z>3 passive galaxy candidates selected by Merlin et al. (2019) in the CANDELS fields. We begin by first confirming the accuracy of their passive classification by exploiting their sub-mm emission to demonstrate the lack of ongoing SF. Using archival ALMA observations we are able to confirm at least 61% of the observed candidates as passive. While the remainder lack sufficiently deep data for confirmation, we are able to validate the entire sample in a statistical sense. We then estimate the Stellar Mass Function (SMF) of all 101 passive candidates in three redshift bins from z=5 to z=3. We adopt a stepwise approach that has the advantage of taking into account photometric errors, observational incompleteness, and the Eddington bias without any a-posteriori correction. We observe a pronounced evolution in the SMF around z~4, indicating that we are witnessing the emergence of the passive population at this epoch. Massive (M>10^11Msun) passive galaxies, only accounting for a small (<10%) fraction of galaxies at z>4, become dominant at later epochs. Thanks to a combination of photometric quality, sample selection and methodology, we overall find a higher density of passive galaxies than previous works. The comparison with theoretical predictions, despite a qualitative agreement, denotes a still incomplete understanding of the physical processes responsible for the formation of these galaxies. Finally, we extrapolate our results to predict the number of early passive galaxies expected in surveys carried out with future facilities.
description: A&A in press, version updated to match the accepted version
A Robust Multivariate Long Run Analysis of European Electricity Prices
Creators: name: Bosco, Bruno
name: Parisio, Lucia
name: Pelagatti, Matteo
name: Baldi, Fabio
name: Bosco, Bruno
name: Parisio, Lucia
name: Pelagatti, Matteo
name: Baldi, Fabio
Publisher: name: Unknown
Year: 2007
Subjects: subject: Resource /Energy Economics and Policy
subject: European Electricity Prices
subject: Cointegration
subject: Interdependencies
subject: Equilibrium Correction Model
subject: Oil Prices

description: This paper analyses the interdependencies existing in wholesale European electricity prices. The results of a multivariate long run dynamic analysis of weekly median prices reveal the presence of a strong although not perfect integration among some neighboring markets considered in the sample and the existence of common long-term dynamics of electricity prices and gas prices but not oil prices. The existence of long-term dynamics among gas prices and electricity prices may prove to be important for long-term hedging operations to be conducted even in markets where there are no electricity derivatives.
Automated computation of one-loop integrals in massless theories
Creators: name: van Hameren, Andre
name: Vollinga, Jens
name: Weinzierl, Stefan
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider one-loop tensor and scalar integrals, which occur in a massless quantum field theory and we report on the implementation into a numerical program of an algorithm for the automated computation of these one-loop integrals. The number of external legs of the loop integrals is not restricted. All calculations are done within dimensional regularization.
description: 28 pages, version to be published
D6.3 - Recommendations for Further Improvements
Creators: name: Marvin, Hans
name: Yamine Bouzembrak
name: Bulk, Leonieke Van Den
name: Gavai, Anand
name: Hoenderdaal, Wouter
name: Ningjing Liu
Publisher: name: Zenodo
Year: 2021
Subjects: food safety
big data
standards
certification

description: In order to deliver a well-functioning open industrial virtual data platform that will facilitate the
 exchange and connection of data between different food safety actors who are interested in
 sharing information critical to certification as specified in “The Food Safety Market” project
 (TheFSM) granted in the EU H2020 programme, extensive piloting is required. Detailed pilot plans
 are presented and discussed in Deliverable 6.1 and 6.2. The testing of the applications performed
 in the pilots will be iterative and improvements can be made after each round. This deliverable
 (D6.3) presents the recommendations for improvements on the pilot methodology and consists
 of six sections. Since the piloting will start in 2021, at this time only recommendations can be
 made for improvements of the initial pilot plans and documents.
The Rule of The Jungle in Pakistan: A Case Study on Corruption and Forest Management in Swat
Creators: name: Pellegrini, Lorenzo
name: Pellegrini, Lorenzo
Publisher: name: Unknown
Year: 2007
Subjects: subject: Resource /Energy Economics and Policy
subject: corruption
subject: forest management
subject: environmental policy
subject: institutional reform

description: Corruption in the forest sector of Swat, Pakistan is impairing the sustainable management of forest. We analyze corruption in a case study setting against the backdrop of the reform options that are most often cited as possible solutions. As we highlight in this study, the 'crime and punishment' approach is not feasibly implemented if the overall institutional environment is weak. Since countrywide overhaul of corruption through sweeping reform programs, the other reform approach, is a difficult and lengthy task, there is a need for an alternative kind of reform. In the case of a corruption-ridden centralised forest management regime, institutional reform should move away from enforcement of existing institutions and promote communal management of natural resources by locals.
SUMMARY THE POSSIBILITIES OF  NON-PHARMACOLOGICAL CORRECTION OF  IMMUNOLOGICAL DISORDERS IN THE ACUTE PERIOD OF ISCHEMIC STROKE
Creators: name: Narzullaev, N.U.
name: Shomurodov, Kh.Sh.
name: Umarova, M.N.
Publisher: name: Zenodo
Year: 2024

description: Due to the high mortality rate after a stroke, which in Uzbekistan remains one of the highest in the world, the optimization of early stroke rehabilitation has acquired particular importance in recent decades. Moreover, in 68% of cases, the cause of death in patients who have had a stroke over the age of 60 is complications that join the main pathological process, while the immediate severity of a stroke is only 32%.
Beyond the Fröhlich Hamiltonian: Path integral treatment of large polarons in anharmonic solids
Creators: name: Houtput, Matthew
name: Tempere, Jacques
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The properties of an electron in a typical solid are modified by the interaction with the crystal ions, leading to the formation of a quasiparticle: the polaron. Such polarons are often described using the Fröhlich Hamiltonian, which assumes the underlying lattice phonons to be harmonic. However, this approximation is invalid in several interesting materials, including the recently discovered high-pressure hydrides which superconduct at temperatures above $200$K. In this paper, we show that Fröhlich theory can be extended to eliminate this problem. We derive four additional terms in the Fröhlich Hamiltonian to account for anharmonicity up to third order. We calculate the energy and effective mass of the new polaron, using both perturbation theory and Feynman's path integral formalism. It is shown that the anharmonic terms lead to significant additional trapping of the electron. The derived Hamiltonian is well-suited for analytical calculations, due to its simplicity and since the number of model parameters is low. Since it is a direct extension of the Fröhlich Hamiltonian, it can readily be used to investigate the effect of anharmonicity on other polaron properties, such as the optical conductivity and the formation of bipolarons.
description: Version 1.3
Raising Rivals’ Costs Strategy and Localised Agro-Food Systems in Europe
Creators: name: Barjolle, Dominique
name: Philippe, Jeanneaux
Publisher: name: CentMA
Year: 2012
Subjects: PDO; localised agro-food system; raising rivals’ costs; governance of LAFS

description: For some Localised Agro-Food Systems (LAFS) in Europe, the cheese and milk prices are above average whilst others are similar or even below average. The objective of this paper is to shed light on levers, which the agents activate to assure their uniqueness is irrevocable, and uphold the benefits of their LAFS. Raising Rivals' Costs Theory gives interesting point of view about the behaviour of firms, which could make use of the collective rules to raise the costs of their competitors in the particular case of LAFS oriented to the production of traditional cheeses. This will be explored through two cases studies.
description: International Journal on Food System Dynamics, Vol 3, No 1 (2012)
Technological Innovation – A Route Towards Sustainability
Creators: name: Kavanagh, Gráinne
name: Henchion, Maeve
name: McCarthy, Mary
name: McCarthy, Sinead
name: Williams, Gwilym
Publisher: name: CentMA
Year: 2012
Subjects: Food industry; Absorptive capacity; Innovation; Small and medium‐sized enterprises; SME

description: The sustainability of small and medium-sized enterprises (SMEs)

 is constantly challenged on today’s dynamic operating environment. Evolving regulatory trends, difficult economic conditions, and diminishing natural resources, pose serious questions for all players across the food system. Technological innovation, as a means of ensuring future sustainability in the same in the face of such challenges, has been the focus of significant government investment in Ireland. This paper, aims to facilitate a greater understanding of the motivations and barriers influencing the decision by food SMEs to invest in technological innovation emanating from research conducted in publicly‐funded research institutes.
description: International Journal on Food System Dynamics, Vol 3, No 1 (2012)
Neutrino Mass Matrix from S_4 Symmetry
Creators: name: Ma, Ernest
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The cubic symmetry S_4 contains A_4 and S_3, both of which have been used to study neutrino mass matrices. Using S_4 as the family symmetry of a complete supersymmetric theory of leptons, it is shown how the requirement of breaking S_4 at the seesaw scale without breaking supersymmetry enforces a special form of the neutrino mass matrix which exhibits maximal nu_mu - nu_tau mixing as well as zero U_e3. In addition, (nu_e + nu_mu + nu_tau)/sqrt{3} is naturally close to being a mass eignestate, thus predicting tan^2 theta_12 to be near but not equal to 1/2.
description: 11 pages, no figure
Traditional Natural Resources Management Practices and Biodiversity Conservation in Ghana: A Review of Local Concepts and Issues on Change and Sustainability
Creators: name: Sarfo-Mensah, Paul
name: Oduro, William
name: Sarfo-Mensah, Paul
name: Oduro, William
Publisher: name: Unknown
Year: 2007
Subjects: subject: Resource /Energy Economics and Policy
subject: forest
subject: savanna transition
subject: sacred groves
subject: traditional beliefs
subject: biodiversity conservation
subject: change and sustainability

description: This paper reviews the importance of traditional natural resources management practices in Ghana. It highlights the roles of traditional beliefs, taboos and rituals in the management and conservation of key natural resources in the country. The paper is based on desk studies undertaken as part of anthropological studies conducted in the forest-savanna transitional agroecological zone of Ghana to study the spirituality of forests and conservation. Among the major conclusions of the paper is that although the potential of traditional natural resources management for biodiversity conservation in Ghana is enormous, the sustainability of these practices is seriously threatened. This stems from the rapid changes in the belief systems. Both biophysical and socio-economic factors were found to underlie these changes. The breakdown of traditional beliefs and associated taboos which underpin traditional natural resources management practices were found to be the greatest threat to the sustainability of these practices. The paper recommends that more anthropological research should investigate local perceptions of forest space and landscape, biodiversity conservation and traditional beliefs, and their significance for natural resources management. Such studies would provide valuable insights into the changing values of local people in relation to protected areas such as sacred groves and forest reserves and the management of other natural resources.
Grizzly bear (Ursus arctus) management and mortality distribution along the administrative boundaries of Waterton-Glacier International Peace Park
Creators: name: Dean, Carrie Saviers
Publisher: name: University of British Columbia
Year: 2009

description: Maintenance of wide-ranging mammal species in protected areas often requires management beyond reserve administrative boundaries. This thesis examines the relationship between cross-boundary management of a grizzly bear population and the distribution of humancaused mortality in that population. Concurrent analyses of grizzly bear management practices and human-caused grizzly bear mortality distribution were conducted along the administrative boundaries of Waterton- Glacier International Peace Park (WGIPP) in Montana, Alberta, and British Columbia. From 1976-1997, the concentration of mortality was significantly greater outside the park than inside it. In addition, non-park mortality density was higher within 10 km of the park boundary than in areas 20-50 km from the boundary. Analysis of management policies and practices suggests that comprehensive preventative bear-human conflict management and more conservative legal harvest in the parks have resulted in lower mortality levels compared with outlying lands. Outside the park, dispersing bears and/or gradients in habitat quality may be responsible for higher mortality adjacent to the park boundary. Contrasts and interactions in management between the park and its surrounding jurisdictions may also render bears in the boundary region more susceptible to human-caused mortality by increasing gateway development and numbers of habituated bears. More detailed boundary analysis is needed in several locations to determine how management is influencing humancaused bear mortality patterns. Once this has been accomplished, a system of customised buffer zoning is recommended that incorporates a variety of prescribed management changes in each jurisdiction in effort to reduce mortality adjacent to Waterton -Glacier's boundary.
Divide-and-Evolve: a New Memetic Scheme for Domain-Independent Temporal Planning
Creators: name: Schoenauer, Marc
name: Savéant, Pierre
name: Vidal, Vincent
Publisher: name: arXiv
Year: 2006
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: An original approach, termed Divide-and-Evolve is proposed to hybridize Evolutionary Algorithms (EAs) with Operational Research (OR) methods in the domain of Temporal Planning Problems (TPPs). Whereas standard Memetic Algorithms use local search methods to improve the evolutionary solutions, and thus fail when the local method stops working on the complete problem, the Divide-and-Evolve approach splits the problem at hand into several, hopefully easier, sub-problems, and can thus solve globally problems that are intractable when directly fed into deterministic OR algorithms. But the most prominent advantage of the Divide-and-Evolve approach is that it immediately opens up an avenue for multi-objective optimization, even though the OR method that is used is single-objective. Proof of concept approach on the standard (single-objective) Zeno transportation benchmark is given, and a small original multi-objective benchmark is proposed in the same Zeno framework to assess the multi-objective capabilities of the proposed methodology, a breakthrough in Temporal Planning.
Welfare and Distribution Effects of Water Pricing Policies
Creators: name: Ruijs, Arjan
name: Ruijs, Arjan
Publisher: name: Unknown
Year: 2007
Subjects: subject: Food Security and Poverty
subject: Resource /Energy Economics and Policy
subject: water demand
subject: welfare economics
subject: equivalent variation

description: In this paper, distribution and welfare effects of changes in block price systems are evaluated. A method is discussed to determine, for a Marshallian demand function, equivalent variation in case of a block price system. The method is applied to analyze welfare and distribution effects of changing water prices in the Metropolitan Region of São Paulo. Results show that there is a trade off between average welfare and income distribution. A pro-poor price system may result in lower average welfare than a flat price system, but in higher individual welfare for the poor. Moreover, there is a trade off between revenues for the water company and income distribution. Even though pro-poor price systems may not be as good for average welfare as flat price systems, their direct effects on poverty are important. Introducing pro-poor price systems, however, may have financial consequences for the water companies.
Signatures of folded branches in the scanning gate microscopy of ballistic electronic cavities
Creators: name: Fratus, Keith R.
name: Calonnec, Camille Le
name: Jalabert, Rodolfo A.
name: Weick, Guillaume
name: Weinmann, Dietmar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate the emergence of classical features in electronic quantum transport for the scanning gate microscopy response in a cavity defined by a quantum point contact and a micron-sized circular reflector. The branches in electronic flow characteristic of a quantum point contact opening on a two-dimensional electron gas with weak disorder are folded by the reflector, yielding a complex spatial pattern. Considering the deflection of classical trajectories by the scanning gate tip allows to establish simple relationships of the scanning pattern, which are in agreement with recent experimental findings.
description: 20 pages, 13 figures, revised version, submission to SciPost
The LMC HII region N 214C and its peculiar nebular blob
Creators: name: Meynadier, Frederic
name: Heydari-Malayeri, Mohammad
name: Walborn, Nolan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the Large Magellanic Cloud HII region N 214C using imaging and spectroscopy obtained at the ESO New Technology Telescope. On the basis of the highest resolution images so far obtained of the OB association LH 110, we show that the main exciting source of the HII region, Sk -71 51, is in fact a tight cluster of massive stars consisting of at least 6 components in an area ~ 4" wide. Spectroscopic observations allow us to revise the spectral type of the main component (# 17) to O2 V ((f*)) + OB, a very rare, hot type. We also classify several other stars associated with N 214C and study the extinction and excitation characteristics of the HII region. Moreover, we obtain BVR photometry and astrometry of 2365 stars and from the corresponding color-magnitude diagram study the stellar content of N 214C and the surrounding LH 110. Furthermore, we discover a striking compact blob of ionized gas in the outer northern part of N 214C. A spherical structure of ~ 5" in radius (~ 1.3 pc), it is split into two lobes by absorbing dust running diametrically through its center. We discuss the possible nature of this object.
description: Low resolution figures. Better quality figures may be obtained from A&A online edition or on request to F. Meynadier
Technology Spillovers and Stability of International Climate Coalitions
Creators: name: Nagashima, Miyuki
name: Dellink, Rob B.
name: Nagashima, Miyuki
name: Dellink, Rob B.
Publisher: name: Unknown
Year: 2007
Subjects: subject: Environmental Economics and Policy
subject: Climate Change Modelling
subject: International Environmental Agreements
subject: Non-cooperative Game Theory
subject: Technology Spillovers

description: Cooperation in international environmental agreements appears difficult to attain because of strong free-riding incentives. This paper explores how different technology spillover mechanisms among regions can influence the incentive structures to join and stabilise an international agreement. We use an applied modelling framework (STACO) that enables us to investigate stability of partial climate coalitions. Technology spillovers to coalition members increase their incentives to stay in the coalition and reduce abatement costs, which leads to larger global payoffs and a lower global CO2 stock. Several theories on the impact of technology spillovers are evaluated by simulating a range of alternative specifications. We find that while spillovers are a good instrument to improve stability of bilateral agreements, they cannot overcome the strong free rider incentives that are present in larger coalitions. This conclusion is robust against the specification of technology spillovers.
Codimensional Incremental Potential Contact
Creators: name: Li, Minchen
name: Kaufman, Danny M.
name: Jiang, Chenfanfu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: We extend the incremental potential contact (IPC) model for contacting elastodynamics to resolve systems composed of codimensional DOFs in arbitrary combination. This enables a unified, interpenetration-free, robust, and stable simulation framework that couples codimension-0,1,2, and 3 geometries seamlessly with frictional contact. Extending IPC to thin structures poses new challenges in computing strain, modeling thickness and determining collisions. To address these challenges we propose three corresponding contributions. First, we introduce a C2 constitutive barrier model that directly enforces strain limiting as an energy potential while preserving rest state. This provides energetically-consistent strain limiting models (both isotropic and anisotropic) for cloth that enable strict satisfaction of strain-limit inequalities with direct coupling to both elastodynamics and contact via minimization of the incremental potential. Second, to capture the geometric thickness of codimensional domains we extend the IPC model to directly enforce distance offsets. Our treatment imposes a strict guarantee that mid-surfaces (resp. mid-lines) of shells (resp. rods) will not move closer than applied thickness values. This enables us to account for thickness in the contact behavior of codimensional structures and so robustly capture challenging contacting geometries; a number of which, to our knowledge, have not been simulated before. Third, codimensional models, especially with modeled thickness, mandate strict accuracy requirements that pose a severe challenge to all existing continuous collision detection (CCD) methods. To address these limitations we develop a new, efficient, simple-to-implement additive CCD (ACCD) method that applies conservative advancement to iteratively refine a lower bound for deforming primitives, converging to time of impact.
Assessment of students’ awareness of the national heritage (Case study: The preparatory year students at the University of Hail, Saudi Arabia)
Creators: name: Ahmed, Tarek Sayed Abdelazim
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: This study financed by the deanship of scientific research, Hail, University, Kingdom of Saudi Arabia aims to identify the degree of students’ awareness of the national heritage, to investigate the role school in raising awareness of the national heritage, to explore the degree of student satisfaction about that role played in addition to explore the impact of family in predicting the personal interest in the local heritage. A survey was conducted. About 250 questionnaires were distributed to random sample of students in the preparatory year in both in the males and females sections in cooperation with a number of teaching staff. Students who accepted and filled the questionnaires were 210 only, from which 32 were incomplete and thus eliminated from the study. As a result, 178 questionnaires were accepted for the purpose of the final analysis, representing a response rate of 87%. The results show that there is statistically significant contribution for familial interest in the national heritage in predicting the personal interest in local heritage. There is a statistically significant relationship between the place of residence and the perception of the level of awareness of the importance of the national heritage.
An Introduction to Motivic Feynman Integrals
Creators: name: Rella, Claudia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 81-02, 14-02, 81Q30 (Primary) 81T18, 81T15, 14C15, 14C30, 14F40, 11R32 (Secondary)

description: This article gives a short step-by-step introduction to the representation of parametric Feynman integrals in scalar perturbative quantum field theory as periods of motives. The application of motivic Galois theory to the algebro-geometric and categorical structures underlying Feynman graphs is reviewed up to the current state of research. The example of primitive log-divergent Feynman graphs in scalar massless $ϕ^4$ quantum field theory is analysed in detail.
Transseries for causal diffusive systems
Creators: name: Heller, Michal P.
name: Serantes, Alexandre
name: Spaliński, Michał
name: Svensson, Viktor
name: Withers, Benjamin
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The large proper-time behaviour of expanding boost-invariant fluids has provided many crucial insights into quark-gluon plasma dynamics. Here we formulate and explore the late-time behaviour of nonequilibrium dynamics at the level of linearized perturbations of equilibrium, but without any special symmetry assumptions. We introduce a useful quantitative approximation scheme in which hydrodynamic modes appear as perturbative contributions while transients are nonperturbative. In this way, solutions are naturally organized into transseries as they are in the case of boost-invariant flows. We focus our attention on the ubiquitous telegrapher's equation, the simplest example of a causal theory with a hydrodynamic sector. In position space we uncover novel transient contributions as well as Stokes phenomena which change the structure of the transseries based on the spacetime region or the choice of initial data.
description: v1: 23 pages + appendices, 16 figures; v2: references added, matches version published in JHEP