cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Révélation lumineuse – Hypothèse globale sur l'interaction lumière, matière et conscience
Creators: name: Fiquemont, Johann
Publisher: name: Zenodo
Year: 2025
Subjects: Lumière
Matiere noire
Trou noir
Energie
Consciente
Temps
Espace

description: Ce document présente une hypothèse scientifique originale formulée par Johann Fiquemont, chercheur indépendant, sur le rôle de la lumière comme révélateur universel d’interaction. Il explore la relation entre lumière, matière, perception, conscience, et temps. L’auteur propose que la lumière ne soit perceptible que lorsqu’elle rencontre une résistance, et que cette interaction conditionne notre accès à la réalité observable. Des réflexions sur les trous noirs, la matière noire, la résonance optique et les cavités lumineuses sont proposées, ainsi que des pistes testables. Ce dépôt constitue la première publication publique de la Théorie Kelsya.
Hanle effect driven by weak-localization
Creators: name: Lyubinskiy, I. S.
name: Kachorovskii, V. Yu.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The influence of weak localization on Hanle effect in a two-dimensional system with spin-split spectrum is considered. We show that weak localization drastically changes the dependence of stationary spin polarization $\mathbf S$ on external magnetic field $B.$ In particular, the non-analytic dependence of $\mathbf S$ on $\mathbf B$ is predicted for III-V-based quantum wells grown in [110] direction and for [100]-grown quantum wells having equal strengths of Dresselhaus and Bychkov-Rashba spin-orbit coupling. It is shown that in weakly localized regime the components of $\mathbf S$ are discontinuous at $B=0.$ At low $B,$ the magnetic field-induced rotation of the stationary polarization is determined by quantum interference effects. This implies that the Hanle effect in such systems is totally driven by weak localization.
description: 4 pages, 1 figure
Additional file 2 of Dual versus mono antiplatelet therapy for acute non- cardio embolic ischemic stroke or transient ischemic attack, an efficacy and safety analysis - updated meta-analysis
Creators: name: Albay, Christessa Emille Que
name: Leyson, Frederick Gavril D.
name: Federick C. Cheng
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Sociology
subject: FOS: Sociology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Additional file 2.
title: Matchmakers or tastemakers? Platformization of cultural intermediation & social media’s engines for ‘making up taste’
Creators: name: Kaparoglu, Zeynep
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2018

description: There are long-standing practices and processes that have traditionally mediated between the processes of production and consumption of cultural content. The prominent instances of these are: curating content by identifying and selecting cultural content in order to promote to a particular set of audiences; measuring audience behaviours to construct knowledge about their tastes; and guiding audiences through recommendations from cultural experts. These cultural intermediation processes are currently being transformed, and social media platforms play important roles in this transformation. However, their role is often attributed to the work of users and/or recommendation algorithms. Thus, the processes through which data about users’ taste are aggregated and made ready for algorithmic processing are largely neglected. This study takes this problematic as an important gap in our understanding of social media platforms’ role in the transformation of cultural intermediation. To address this gap, the notion of platformization is used as a theoretical lens to examine the role of users and algorithms as part of social media’s distinct data-based sociotechnical configuration, which is built on the so-called ‘platform-logic’. Based on a set of conceptual ideas and the findings derived through a single case study on a music discovery platform, this thesis developed a framework to explain ‘platformization of cultural intermediation’. This framework outlines how curation, guidance, and measurement processes are ‘plat-formed’ in the course of development and optimisation of a social media platform. This is the main contribution of the thesis. The study also contributes to the literature by developing the concept of social media’s engines for ‘making up taste’. This concept illuminates how social media operate as sociotechnical cultural intermediaries and participates in tastemaking in ways that acquire legitimacy from the long-standing trust in the objectivity of classification, quantification, and measurement processes.
Additional file 3 of Dual versus mono antiplatelet therapy for acute non- cardio embolic ischemic stroke or transient ischemic attack, an efficacy and safety analysis - updated meta-analysis
Creators: name: Albay, Christessa Emille Que
name: Leyson, Frederick Gavril D.
name: Federick C. Cheng
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Sociology
subject: FOS: Sociology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Additional file 3.
Utility Maximization with a Stochastic Clock and an Unbounded Random Endowment
Creators: name: Zitkovic, Gordan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Computational Finance (q-fin.CP)
subject: FOS: Mathematics
subject: FOS: Economics and business
subject: 91B28 (Primary) 60G99, 60H99. (Secondary)

description: We introduce a linear space of finitely additive measures to treat the problem of optimal expected utility from consumption under a stochastic clock and an unbounded random endowment process. In this way we establish existence and uniqueness for a large class of utility-maximization problems including the classical ones of terminal wealth or consumption, as well as the problems that depend on a random time horizon or multiple consumption instances. As an example we explicitly treat the problem of maximizing the logarithmic utility of a consumption stream, where the local time of an Ornstein-Uhlenbeck process acts as a stochastic clock.
description: Published at http://dx.doi.org/10.1214/105051604000000738 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Food security in Uganda: a dilemma to achieving the millennium development goal
Creators: name: Ssewanyana, Sarah N.
name: Kasirye, Ibrahim
name: Ssewanyana, Sarah N.
name: Kasirye, Ibrahim
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Labor and Human Capital
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Productivity Analysis
subject: Risk and Uncertainty
subject: Food security
subject: Caloric intake
subject: Famine
subject: Ssewanyana
subject: Food prices
subject: EPRC

description: The status of food security in Uganda is worrying. The share of Ugandans suffering from food insecurity measured in terms of caloric intake is alarmingly high with low rates of income poverty. Based on the 2005/06 Uganda National Household Survey data, the study provides insights into access to food at household level. More importantly, the study shows that average caloric intake stood at 1,970 calories per person per day, which is below the minimum caloric requirement of 2,200 calories. As such, a population of 17.5 million Ugandans in 3.1 million households were unable to meet the minimum caloric requirement in 2006. This raises questions on whether Uganda will be able to achieve the Millennium Development Goal (MDG) 1: halving extreme poverty and hunger by 2015. While Uganda is on track to halve extreme poverty, it is less likely to halve extreme hunger by 2015. Yet the results suggest that food insecurity and income poverty are closely linked. Similarly, food insecurity at household level is closely linked to child nutrition status. In other words, antipoverty interventions and interventions to address food insecurity and child nutrition status have to be closely linked. The results further suggest that income growth, land under cultivation, changes in food prices and education attainment of household head significantly impact on caloric intake. There are significant seasonal fluctuations in dietary intakes – calories and protein. Improving post harvest storage technologies and preservation methods; creating remunerative employment especially for the urban population; and strengthening the food distribution mechanisms would go a long way in addressing these seasonal fluctuations. Food insecurity is also marked with significant spatial variations that need to be taken into account in designing anti‐food insecurity interventions. The famine that hit some districts during 2009 demonstrates that adverse effects on the agricultural sector directly increase vulnerability to food insecurity. At the same time, increasing land under cultivation improves food security at household level. This suggests that improving agricultural productivity is a key to long‐term food security.
Fiscal policy consistency and its implications for macroeconomic aggregates: The case of Uganda
Creators: name: Hisali, Eria
name: Hisali, Eria
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Financial Economics
subject: Institutional and Behavioral Economics
subject: Public Economics
subject: fiscal stance
subject: macroeconomic aggregates
subject: structural vector autogression
subject: budget accounting approach

description: The relationship between growth in monetary aggregates and price changes continues to be a subject of considerable debate both in the academic and policy circles. Whereas the more ‘conservative’ policy makers hold that growth in monetary aggregates bear proportionately on prices, ‘liberals’ on the other hand suggest a fairly weak relationship and instead mainly attribute sustained price changes to other innovations (including structural weaknesses and poor productive capacity). This study employed vector autoregression techniques (and its variants) to examine both short term as well as long term interactions between selected macroeconomic aggregates with particular focus on the relationship between money growth and price changes. Results from both the reduced form vector autoregression specification and the contemporaneous structural vector autoregression show a weak causation from growth in monetary aggregates to price changes, but the link between changes in monetary aggregates and prices becomes stronger in the long run. The results also point to a strong relationship between price changes on the one hand and exchange rate depreciation, and past inflation outcomes on the other. The results imply a potential for increased revenue from monetisation, at least up to some feasible as well as the need to focus on other possible sources of price variations. In general, whereas it is possible for the relationship between prices and money to weaken, budget deficits beyond ‘certain financeable limits’ will clearly negate the possibility of attaining other objectives of macroeconomic policy...
Adsorption of para-Hydrogen on Fullerenes
Creators: name: Turnbull, Joseph D.
name: Boninsegni, Massimo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Adsorption of para-Hydrogen on the outer surface of a single fullerene is studied theoretically, by means of ground state Quantum Monte Carlo simulations. We compute energetics and radial density profiles of para-Hydrogen for various coverages on a variety of small fullerenes. The equilibrium adsorbed monolayer is commensurate with the surface of the fullerene; as the chemical potential is increased, a discontinuous change is generally observed, to an incommensurate, compressible layer. Quantum exchanges of Hydrogen molecules are absent in these systems.
Twistor Forms on Riemannian Products
Creators: name: Moroianu, Andrei
name: Semmelmann, Uwe
Publisher: name: arXiv
Year: 2004
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C29, 58J50

description: We study twistor forms on products of compact Riemannian manifolds and show that they are defined by Killing forms on the factors. The main result of this note is a necessary step in the classification of compact Riemannian manifolds with non-generic holonomy carrying twistor forms.
description: 5 pages
Coherent states for graphene under the interaction of crossed electric and magnetic fields
Creators: name: Castillo-Celeita, Miguel
name: Díaz-Bautista, Erik
name: Oliva-Leyva, Maurice
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct the coherent states for charge carriers in a graphene layer immersed in crossed external electric and magnetic fields. For that purpose, we solve the Dirac-Weyl equation in a Landau-like gauge avoiding applying techniques of special relativity, and thus we identify the appropriate rising and lowering operators associated to the system. We explicitly construct the coherent states as eigenstates of a matrix annihilation operator with complex eigenvalues. In order to describe the effects of both fields on these states, we obtain the probability and current densities, the Heisenberg uncertainty relation and the mean energy as functions of the parameter $β=c\,\mathcal{E}/(v_{\rm F}B)$. In particular, these quantities are investigated for magnetic and electric fields near the condition of the Landau levels collapse ($β\rightarrow1$).
description: 21 pages, 10 figures
Stabilizing Quasi-Time-Optimal Nonlinear Model Predictive Control with Variable Discretization
Creators: name: Rösmann, Christoph
name: Makarow, Artemi
name: Bertram, Torsten
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: This paper deals with the development and analysis of novel time-optimal point-to-point model predictive control concepts for nonlinear systems. Recent approaches in the literature apply a time transformation, however, which do not maintain recursive feasibility for piecewise constant control parameterization. The key idea in this paper is to introduce uniform grids with variable discretization. A shrinking-horizon grid adaptation scheme ensures convergence to a specific region around the target state and recursive feasibility. The size of the region is configurable by design parameters. This facilitates the systematic dual-mode design for quasi-time-optimal control to restore asymptotic stability and establish a smooth stabilization. Two nonlinear program formulations with different sparsity patterns are introduced to realize and implement the underlying optimal control problem. For a class of numerical integration schemes, even nominal asymptotic stability and true time-optimality are achieved without dual-mode. A comparative analysis as well as experimental results demonstrate the effectiveness of the proposed techniques.
Reconstructing a two-color scenery by observing it along a simple random walk path
Creators: name: Matzinger, Heinrich
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60L37 (Primary) 60G10. (Secondary)

description: Let {ξ(n)}_{n\in Z} be a two-color random scenery, that is, a random coloring of Z in two colors, such that the ξ(i)'s are i.i.d. Bernoulli variables with parameter \tfrac12. Let {S(n)}_{n\in N} be a symmetric random walk starting at 0. Our main result shows that a.s., ξ\circ S (the composition of ξand S) determines ξup to translation and reflection. In other words, by observing the scenery ξalong the random walk path S, we can a.s. reconstruct ξup to translation and reflection. This result gives a positive answer to the question of H. Kesten of whether one can a.s. detect a single defect in almost every two-color random scenery by observing it only along a random walk path.
description: Published at http://dx.doi.org/10.1214/105051604000000972 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Spherically Symmetric Quantum Geometry: States and Basic Operators
Creators: name: Bojowald, Martin
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The kinematical setting of spherically symmetric quantum geometry, derived from the full theory of loop quantum gravity, is developed. This extends previous studies of homogeneous models to inhomogeneous ones where interesting field theory aspects arise. A comparison between a reduced quantization and a derivation of the model from the full theory is presented in detail, with an emphasis on the resulting quantum representation. Similar concepts for Einstein-Rosen waves are discussed briefly.
description: 26 pages
Measurement of the J/Psi Meson and b-Hadron Production Cross Sections in ppbar Collisions at sqrt s = 1960 GeV
Creators: name: Acosta, D.
name: Collaboration, CDF
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a new measurement of the inclusive and differential production cross sections of $J/ψ$ mesons and $b$-hadrons in proton-antiproton collisions at $\sqrt{s}=1960$ GeV. The data correspond to an integrated luminosity of 39.7 pb$^{-1}$ collected by the CDF Run II detector. We find the integrated cross section for inclusive $J/ψ$ production for all transverse momenta from 0 to 20 GeV/$c$ in the rapidity range $|y|<0.6$ to be $4.08 \pm 0.02 (stat)^{+0.36}_{-0.33} (syst) μ{\rm b}$. We separate the fraction of $J/ψ$ events from the decay of the long-lived $b$-hadrons using the lifetime distribution in all events with $p_T(J/ψ) > 1.25$ GeV/$c$. We find the total cross section for $b$-hadrons, including both hadrons and anti-hadrons, decaying to $J/ψ$ with transverse momenta greater than 1.25 GeV/$c$ in the rapidity range $|y(J/ψ)|<0.6$, is $ 0.330 \pm 0.005 (stat) ^{+0.036}_{-0.033} (syst) ~μ{\rm b}$. Using a Monte Carlo simulation of the decay kinematics of $b$-hadrons to all final states containing a $J/ψ$, we extract the first measurement of the total single $b$-hadron cross section down to zero transverse momentum at $\sqrt{s}=1960$ GeV. We find the total single $b$-hadron cross section integrated over all transverse momenta for $b$-hadrons in the rapidity range $|y|<0.6$ to be $ 17.6 \pm 0.4 (stat)^{+2.5}_{-2.3} (syst) μ{\rm b}$.
Additional file 1 of A multi-centre, pragmatic, three-arm, individually randomised, non-inferiority, open trial to compare immediate orally administered, immediate topically administered or delayed orally administered antibiotics for acute otitis media with discharge in children: The Runny Ear Study (REST): study protocol
Creators: name: Curtis, Kathryn
name: Moore, Michael
name: Cabral, Christie
name: Curcin, Vasa
name: Horwood, Jeremey
name: Morris, Richard
name: Vibhore Prasad
name: Schilder, Anne
name: Turner, Nicholas
name: Wilkes, Scott
name: Hay, Alastair D.
name: Taylor, Jodi
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: FOS: Biological sciences

description: Additional file 1. REST Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT) Checklist.
Large-Scale, Precision Xenon Doping of Liquid Argon
Creators: name: McFadden, N.
name: Elliott, S. R.
name: Gold, M.
name: Fields, D. E.
name: Rielage, K.
name: Massarczyk, R.
name: Gibbons, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The detection of scintillation light from liquid argon is an experimental technique key to a number of current and future nuclear/particle physics experiments, such as neutrino physics, neutrinoless double beta decay and dark matter searches. Although the idea of adding small quantities of xenon (doping) to enhance the light yield has attracted considerable interest, this technique has never been demonstrated at the necessary scale or precision. Here we report on xenon doping in a 100 l cryogenic vessel. Xenon doping was performed in four concentrations of 1.00$\pm$0.06 ppm, 2.0$\pm$0.1 ppm, 5.0$\pm$0.3 ppm, and 10.0$\pm$0.5 ppm. These measurements represent the most precise xenon doping measurements as of publishing. We observed an increase in average light yield by a factor of 1.92$\pm$0.12(syst)$\pm$0.02(stat) at a dopant concentration of 10 ppm.
Necessary and sufficient conditions for non-perturbative equivalences of large N orbifold gauge theories
Creators: name: Kovtun, Pavel
name: Unsal, Mithat
name: Yaffe, Laurence G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Large N coherent state methods are used to study the relation between U(N) gauge theories containing adjoint representation matter fields and their orbifold projections. The classical dynamical systems which reproduce the large N limits of the quantum dynamics in parent and daughter orbifold theories are compared. We demonstrate that the large N dynamics of the parent theory, restricted to the subspace invariant under the orbifold projection symmetry, and the large N dynamics of the daughter theory, restricted to the untwisted sector invariant under "theory space'' permutations, coincide. This implies equality, in the large N limit, between appropriately identified connected correlation functions in parent and daughter theories, provided the orbifold projection symmetry is not spontaneously broken in the parent theory and the theory space permutation symmetry is not spontaneously broken in the daughter. The necessity of these symmetry realization conditions for the validity of the large N equivalence is unsurprising, but demonstrating the sufficiency of these conditions is new. This work extends an earlier proof of non-perturbative large N equivalence which was only valid in the phase of the (lattice regularized) theories continuously connected to large mass and strong coupling.
description: 21 page, JHEP style
Sectoral and welfare effects of the global economic crisis on Uganda: a recursive dynamic CGE analysis
Creators: name: Twimukye, Evarist P.
name: Matovu, John Mary
name: Levine, Sebastian
name: Birungi, Patrick
name: Twimukye, Evarist P.
name: Matovu, John Mary
name: Levine, Sebastian
name: Birungi, Patrick
Publisher: name: Unknown
Year: 2010
Subjects: subject: Consumer/Household Economics
subject: Financial Economics
subject: Industrial Organization
subject: International Development
subject: Production Economics
subject: Public Economics
subject: Sub-Saharan Africa
subject: Uganda
subject: global economic and financial crisis
subject: computable general equilibrium (CGE)

description: This paper analyses the impact of the global economic and financial crisis on Uganda notably on macro-economic aggregates, sectoral output and household welfare, and the potential role of fiscal policy and reform in mitigating the impacts. We find that second round effects from a reduction in financial inflows such as remittances, foreign direct investments and overseas development assistance, as well as reduction in international demand from cash crops such as cotton, tea and coffee, could lead to a reduction in economic growth by 0.6 percentage points on average annually over the period 2008- 2010 compared to a baseline reflecting pre-crisis conditions. A surge in regional exports and early counter-cyclical policies in particular are found to dampen the most adverse impacts of the crisis. The paper also shows that the impact of the government’s expansionary 2009/2010 budget could return growth to pre-crisis levels and illustrates how a re-prioritization of government expenditure away from expenditure on administration to more productive sectors of the economy, combined with reforms to improve the efficiency of public spending, could lift long-term growth and reduce poverty, especially in rural areas, even more.
title: NABEUL
title: NABEUL
title: Atlas archéologique de la Tunisie
Creators: name: Babelon, Ernest Charles François
name: Babelon, Ernest Charles François > Auteur
name: Cagnat, René Louis Victor > Auteur
name: Reinach, Salomon > Auteur
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2022
Subjects: subject: Archéologie
subject: Antiquité
subject: Recherche archéologique
subject: Savoirs (Les)
subject: Cartographie
subject: Atlas
subject: Atlas archéologique

description: [Atlas archéologique de la Tunisie ; Edition spéciale des cartes topographiques publiées par la ministère de la Guerre, accompagnée d’un texte explicatif rédigé par E. Babelon, R. Cagnat et S. Reinach, membres de la Commission de l’Afrique du Nord (1ère série, 60 feuilles au 1/50 000 et notices)]
description: Atlas
description: Atlas-Archeo-Tunisie_033
description: 1/50 000
description: La Méditerranée à la carte
description: Paris
description: Source: Institut de recherche sur le Maghreb contemporain (IRMC); Cité numérique de la Méditerranée (MMSH)
description: Source: La Méditerranée à la carte
description: Source: La Méditerranée à la carte > Atlas archéologique de la Tunisie
description: Relation: https://cinumed.mmsh.univ-aix.fr/idurl/1/96201
description: Coverage: Tunisie
description: Coverage: Nabeul
description: Coverage: Antiquité
description: Temporal: Antiquité
description: Provenance: Institut de recherche sur le Maghreb contemporain (IRMC); Cité numérique de la Méditerranée (MMSH)
Bridges and barriers to offering outdoor education to grade 4-7 students in schools
Creators: name: Sanderson, Arthur Owen
Publisher: name: University of British Columbia
Year: 2009

description: This study investigated the bridges (enabling factors) and the barriers (hindering factors) of offering school-based Outdoor Education programmes. A questionnaire was used to survey 120 grade 4-7 classroom teachers. Teachers were required to record their perceptions pertaining to the bridges and barriers of Outdoor Education programmes on an 11-point scale. Open-ended responses also provided insights about the barriers and bridges, as well as how Outdoor Education programmes could be supported in school settings. Data suggested Outdoor Education is indeed offered in many schools but often only to a limited degree. Interestingly, the identified barriers tended to be of an organisational nature, whereas the bridges tended to be more closely aligned to pedagogical interests. Time, costs and legal liability were perceived by teachers as the strongest barriers to offering Outdoor Education. The strongest bridges were related to student learning, other educational stakeholders and the availability of outdoor areas. These research findings provide guidance for policy, professional development and other means of supporting elementary teachers' efforts to offer Outdoor Education. Methodological guidance is also offered for further research along similar lines.
A diffusion model of scheduling control in queueing systems with many servers
Creators: name: Atar, Rami
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K25, 68M20, 90B22, 90B36, 49L20. (Primary)

description: This paper studies a diffusion model that arises as the limit of a queueing system scheduling problem in the asymptotic heavy traffic regime of Halfin and Whitt. The queueing system consists of several customer classes and many servers working in parallel, grouped in several stations. Servers in different stations offer service to customers of each class at possibly different rates. The control corresponds to selecting what customer class each server serves at each time. The diffusion control problem does not seem to have explicit solutions and therefore a characterization of optimal solutions via the Hamilton-Jacobi-Bellman equation is addressed. Our main result is the existence and uniqueness of solutions of the equation. Since the model is set on an unbounded domain and the cost per unit time is unbounded, the analysis requires estimates on the state process that are subexponential in the time variable. In establishing these estimates, a key role is played by an integral formula that relates queue length and idle time processes, which may be of independent interest.
description: Published at http://dx.doi.org/10.1214/105051604000000963 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Clarifying Inflation Models: the Precise Inflationary Potential from Effective Field Theory and the WMAP data
Creators: name: Cirigliano, D.
name: de Vega, H. J.
name: Sanchez, N. G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We clarify inflaton models by considering them as effective field theories in the Ginzburg-Landau spirit.In this new approach, the precise form of the inflationary potential is constructed from the present WMAP data, and a useful scheme is prepared to confront with the forthcoming data. In this approach, the WMAP statement excluding the pure phi^4 potential implies the presence of an inflaton mass term at the scale m sim 10^{13}GeV. Chaotic, new and hybrid inflation is studied in an unified way. In all cases the inflaton potential takes the form V(phi) = m^2 M_{Pl}^2 v(phi/M_{Pl}), where all coefficients in the polynomial v(x) are of order one. If such potential corresponds to super symmetry breaking, the susy breaking scale is sqrt{m M_{Pl}} \sim 10^{16}GeV which turns to coincide with the GUT scale. The inflaton mass is therefore given by a see-saw formula m sim M_{GUT}^2/M_{Pl}. The observables turn to be two valued functions: one branch corresponds to new inflation and the other to chaotic inflation,the branch point being the pure quadratic potential.For red tilt spectrum, the potential which fits the best the present data and which best prepares the way for the forthcoming data is a trinomial polynomial withnegative quadratic term (new inflation).For blue tilt spectrum, hybrid inflation turns to be the best choice. In both cases we find a formula relating the inflaton mass with the ratio r of tensor/scalar perturbations and the spectral index ns of scalar perturbations: 10^6 m/M_{Pl}= 127 sqrt{r|1-n_s|} ;(the coefficient 127 follows from the WMAP amplitude.Implications for string theory are discussed.
description: LaTeX, 33 pages, 24 .ps figures. Improved version published in Phys Rev D
Groundwater policy: issues and alternatives in India
Creators: name: Moench, Marcus
name: Moench, Marcus
Publisher: name: Unknown
Year: 1996
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Food Security and Poverty
subject: Groundwater management
subject: Groundwater extraction
subject: Water policy
subject: Monitoring
subject: Environment
subject: Poverty
subject: Aquifers
subject: Case studies
subject: Salinity
subject: Salt water intrusion
subject: Water quality
subject: Pollution
subject: Water market
subject: Water use efficiency

description: This paper reviews policy-related issues discussed in recent conferences that will affect groundwater development and management efforts in South Asia. Emphasis is given to policy issues surrounding emerging groundwater depletion and quality concerns, and issues concerning the equitable development of groundwater for poverty alleviation. The paper outlines the range of services that depend on groundwater resources and outlines the range of services that depend on groundwater resources to provide these services, and the complications stemming from the fragmented approach taken to water management throughout the region. A range of responses dealing with the management of the physical system is identified. In conclusion , the paper discusses institutional frameworks through which management responses could be implemented, in relation to both the range of approaches theoretically applicable and the existing institutional frameworks in place throughout South Asia
The Volume Operator in Spherically Symmetric Quantum Geometry
Creators: name: Bojowald, Martin
name: Swiderski, Rafal
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The spherically symmetric volume operator is discussed and all its eigenstates and eigenvalues are computed. Even though the operator is more complicated than its homogeneous analog, the spectra are related in the sense that the larger spherically symmetric volume spectrum adds fine structure to the homogeneous spectrum. The formulas of this paper complete the derivation of an explicit calculus for spherically symmetric models which is needed for future physical investigations.
description: 25 pages, 2 figures
Additional file 2 of Eating occasion situational factors and sugar-sweetened beverage consumption in young adults
Creators: name: McNaughton, Sarah A.
name: Pendergast, Felicity J.
name: Worsley, Anthony
name: Leech, Rebecca M.
Publisher: name: figshare
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2. Participant flowchart for the Measuring EAting in Everyday Life Study.
Non-tariff barriers in EAC customs union: implications for trade between Uganda and other EAC countries
Creators: name: Okumu, Luke
name: Nyankori, James Cyprian Okuk
name: Okumu, Luke
name: Nyankori, James Cyprian Okuk
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: Financial Economics
subject: Industrial Organization
subject: Labor and Human Capital
subject: Productivity Analysis
subject: Public Economics
subject: Non-tariff barriers
subject: East African Community
subject: EPRC
subject: Uganda

description: A key objective for the adoption of East African Community (EAC) Customs Union was to enhance economic gains through elimination of tariffs and non-tariff barriers (NTBs) within the member states. This study has established that several NTBs continue to exist, and some have persisted. The NTBs that have persisted for more than three years include a long list of customs documentation requirements, cumbersome formalities, and limited testing and certification arrangements. Other NTBs that still exist include : un-standardized weighbridges; several road blocks; lack of recognition of individual country’s standards; and the existence of several un-harmonised standards. The simulation results of spatial equilibrium model of maize trade with and without NTBs show that at the EAC level there are positive production, trade and welfare implications attributable to elimination of NTBs in intra-regional maize trade. The gains are greatest in trade and production in Uganda compared to Kenya and Tanzania. To eliminate the existing NTBs and to reduce the possibility of new ones being created, first and foremost, the EAC countries need to design effective mechanisms for identifying and verifying information about NTBs and ensuring their elimination. This will require giving the EAC Secretariat the mandate to compel individual countries to eliminate any identified NTB and to ensure that no new ones are created. Second, policy and legislative decisions made by, for example, Council of Ministers should be communicated in time for effective implementation...
Lepto-Axiogenesis
Creators: name: Co, Raymond T.
name: Fernandez, Nicolas
name: Ghalsasi, Akshay
name: Hall, Lawrence J.
name: Harigaya, Keisuke
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We propose a baryogenenesis mechanism that uses a rotating condensate of a Peccei-Quinn (PQ) symmetry breaking field and the dimension-five operator that gives Majorana neutrino masses. The rotation induces charge asymmetries for the Higgs boson and for lepton chirality through sphaleron processes and Yukawa interactions. The dimension-five interaction transfers these asymmetries to the lepton asymmetry, which in turn is transferred into the baryon asymmetry through the electroweak sphaleron process. QCD axion dark matter can be simultaneously produced by dynamics of the same PQ field via kinetic misalignment or parametric resonance, favoring an axion decay constant $f_a \lesssim 10^{10}$ GeV, or by conventional misalignment and contributions from strings and domain walls with $f_a \sim 10^{11}$ GeV. The size of the baryon asymmetry is tied to the mass of the PQ field. In simple supersymmetric theories, it is independent of UV parameters and predicts the supersymmtry breaking mass scale to be $\mathcal{O}(10-10^4)$ TeV, depending on the masses of the neutrinos and whether the condensate is thermalized during a radiation or matter dominated era. We also construct a theory where TeV scale supersymmetry is possible. Parametric resonance may give warm axions, and the radial component of the PQ field may give signals in rare kaon decays from mixing with the Higgs and in dark radiation.
description: 71 pages, 6 Figures
K3 surfaces with ten cusps
Creators: name: Shimada, Ichiro
name: Zhang, De-Qi
Publisher: name: arXiv
Year: 2004
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J28

description: We show that normal K3 surfaces with ten cusps exist in and only in characteristic 3. We determine these K3 surfaces according to the degrees of the polarizations. Explicit examples are given.
description: submitted to the Proceedings of Conference on Algebraic Geometry in honour of Prof. Dolgachev, July 2004; Contemparary Math. AMS
Are they really learning? : investigating grade seven science students’ understanding over the course of a unit through concept mapping activities
Creators: name: Murray-Hoenig, Kathryn Louise
Publisher: name: University of British Columbia
Year: 2009

description: Concept mapping is an activity where students present the knowledge that they have and how it is interconnected and related in a graphic format. This study attempts to determine what type of knowledge can be gained from examining grade seven Science students' concept maps generated over two units of instruction, one taught in an STS manner and the other in a transmissive manner. The maps were examined on multiple points: number of list words used, number of additional words used, number of maps generated, size of maps created, number of words in the links between key words, and type of information in the links between key words. Additionally, maps were examined for any correlations between the type of map created and the academic achievement of the student, as well as for any correlations between gender, manner of unit instruction, and type of map generated. There are gender differences in map construction; boys tend to stick to using textbook definitions and the girls have more creative maps with personal comments and opinions on the topics. In terms of assessment, students who did not do well on the unit test created poor concept maps with few links and little scientific content. However, students who did well on the test did not always create concept maps that reflected their understanding of the subject. Students did generate different types of maps in the two different units. The Astronomy unit maps were often creative and imaginative in their answers, but not always scientific. The Chemistry unit maps reflected that the students had pockets of scientific information but they weren't always able to link those pockets together. It was not possible to determine if these differences were due to the innate differences in the content of each unit or whether this was reflective of differences in teaching style. Concept maps are an excellent tool to see what the students are interested in and to enable students to track their own academic growth.
Economic and institutional efficiency of the National Agricultural Advisory Services’ Programme: The case of Iganga District,
Creators: name: Okoboi, Geofrey
name: Muwanika, Fred Roland
name: Nyende, Majidu
name: Mugisha, Xavier
name: Okoboi, Geofrey
name: Muwanika, Fred Roland
name: Nyende, Majidu
name: Mugisha, Xavier
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: Farm Management
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Land Economics/Use
subject: Livestock Production/Industries
subject: NAADS
subject: Expenditure tracking
subject: EPRC

description: This paper examines the technical and institutional efficiency of the National Agricultural Advisory Services (NAADS) programme implementation in Iganga district. The Cost Effective Analysis (CEA) and stochastic frontier analysis methods were used to examine technical efficiency while expenditure tracking and FGD methods were applied to assess institutional efficiency. The analysis demonstrates that NAADS interventions have not had a significant impact on the output, productivity and income of the farmers in Iganga district. Moreover, NAADS programme faces implementation weaknesses such as nepotism that affects the selection of beneficiaries as well as enterprises, to the extent that some farmers are apathetic about the success or failure of NAADS Programme. Other observed weaknesses in NAADS implementation include late disbursement of funds, very low counterpart funding by the local government and the farmers, and poor monitoring and evaluation (M&E) of the programme. Based on the results, we suggest a major review of the implementation process of NAADS programme in general and Iganga district NAADS in particular.
Additional file 3 of Eating occasion situational factors and sugar-sweetened beverage consumption in young adults
Creators: name: McNaughton, Sarah A.
name: Pendergast, Felicity J.
name: Worsley, Anthony
name: Leech, Rebecca M.
Publisher: name: figshare
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 3. A checklist of items included in the present manuscript as recommended by the extended STROBE-nut statement for nutritional observational studies [1, 2].
Exact and approximate results for deposition and annihilation processes on graphs
Creators: name: Penrose, Mathew D.
name: Sudbury, Aidan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35 (Primary) 05C05, 60C05, 60F05. (Secondary)

description: We consider random sequential adsorption processes where the initially empty sites of a graph are irreversibly occupied, in random order, either by monomers which block neighboring sites, or by dimers. We also consider a process where initially occupied sites annihilate their neighbors at random times. We verify that these processes are well defined on infinite graphs, and derive forward equations governing joint vacancy/occupation probabilities. Using these, we derive exact formulae for occupation probabilities and pair correlations in Bethe lattices. For the blocking and annihilation processes we also prove positive correlations between sites an even distance apart, and for blocking we derive rigorous lower bounds for the site occupation probability in lattices, including a lower bound of 1/3 for Z^2. We also give normal approximation results for the number of occupied sites in a large finite graph.
description: Published at http://dx.doi.org/10.1214/105051604000000765 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Axiomatic geometric formulation of electromagnetism with only one axiom: the field equation for the bivector field F with an explanation of the Trouton-Noble experiment
Creators: name: Ivezic, Tomislav
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In this paper we present an axiomatic, geometric, formulation of electromagnetism with only one axiom: the field equation for the Faraday bivector field F. This formulation with F field is a self-contained, complete and consistent formulation that dispenses with either electric and magnetic fields or the electromagnetic potentials. All physical quantities are defined without reference frames, the absolute quantities, i.e., they are geometric four dimensional (4D) quantities or, when some basis is introduced, every quantity is represented as a 4D coordinate-based geometric quantity comprising both components and a basis. The new observer independent expressions for the stress-energy vector T(n)(1-vector), the energy density U (scalar), the Poynting vector S and the momentum density g (1-vectors), the angular momentum density M (bivector) and the Lorentz force K (1-vector) are directly derived from the field equation for F. The local conservation laws are also directly derived from that field equation. The 1-vector Lagrangian with the F field as a 4D absolute quantity is presented; the interaction term is written in terms of F and not, as usual, in terms of A. It is shown that this geometric formulation is in a full agreement with the Trouton-Noble experiment.
description: 32 pages, LaTex, this changed version will be published in Found. Phys. Lett
Lower bound on the number of Toffoli gates in a classical reversible circuit through quantum information concepts
Creators: name: Popescu, Sandu
name: Groisman, Berry
name: Massar, Serge
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The question of finding a lower bound on the number of Toffoli gates in a classical reversible circuit is addressed. A method based on quantum information concepts is proposed. The method involves solely concepts from quantum information - there is no need for an actual physical quantum computer. The method is illustrated on the example of classical Shannon data compression.
description: 4 pages, 2 figures; revised version