cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Suppressing birhythmicity by parametrically modulating nonlinearity in limit cycle oscillators
Creators: name: Saha, Sandip
name: Chakraborty, Sagar
name: Gangopadhyay, Gautam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Multirhythmicity, a form of multistability, in an oscillator is an intriguing phenomenon found across many branches of science. From an application point of view, while the multirhythmicity is sometimes desirable as it presents us with many possible coexisting stable oscillatory states to tap into, it can also be a nuisance because a random perturbation may make the system settle onto an unwanted stable state. Consequently, it is not surprising that there are many natural and artificial mechanisms available that can control the multirhythmicity. We propose in this paper the idea of incorporating parametric (periodic) modulation of the nonlinear damping in the limit cycle oscillators with a view to exciting resonance and antiresonance responses at particular angular driving frequencies, and controlling the resulting birhythmicity by changing the amplitude of the modulation. To this end, we employ analytical (perturbative) and numerical techniques on the van der Pol oscillator---a paradigmatic limit cycle system---having additional position dependent time delay term and its modified autonomous birhythmic version. We also bring the fact to the fore that introduction of delay---a commonly adopted method of controlling multirhythmicity---in such a system can sometimes bring forth unwanted birhythmicity; and interestingly, our method of controlling birhythmicity through periodic modulation can suppress such a delay induced birhythmic response.
description: Accepted (Physica D: Nonlinear Phenomena)
Additional file 1 of Ambient particulate matter and biomass burning: an ecological time series study of respiratory and cardiovascular hospital visits in northern Thailand
Creators: name: Mueller, W.
name: M. Loh
name: S. Vardoulakis
name: H. J. Johnston
name: S. Steinle
name: N. Precha
name: W. Kliengchuay
name: K. Tantrakarnapa
name: J. W. Cherrie
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 1: Figure S1. The total number of fires each month in Southeast Asia during 2014–2017 (obtained from NASA’s Fire Information for Resource Management System [FIRMS]).
X-ray Observations of the Boundary Layer in Dwarf Novae at Low Accretion Rates
Creators: name: Pandel, Dirk
name: Cordova, France A.
name: Mason, Keith O.
name: Priedhorsky, William C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a spectral analysis of XMM-Newton data of ten dwarf novae, nine of which were observed during a quiescent state. The X-ray spectra indicate the presence of a hot, optically thin plasma with a temperature distribution consistent with a simple, isobaric cooling flow. The likely origin of the X-ray emission is cooling plasma in the boundary layer settling onto the white dwarf. Using a cooling flow model, we derive the temperatures, accretion rates, rotational velocities, and elemental abundances of the X-ray emitting gas. We discuss the implications of our findings for the structure of the boundary layer. A comparison of X-ray and ultraviolet luminosities finds no evidence of underluminous boundary layers in any of the quiescent dwarf novae. The X-ray spectrum of EI UMa differs significantly from those of the other objects, showing a strong fluorescent Fe K-alpha line and a strong O VII line triplet. Based on the observational evidence, we argue that EI UMa is most likely an intermediate polar and not as previously thought a dwarf nova.
description: Accepted for publication in ApJ, 37 pages, 8 figures
Eueremaeus marshalli Behan-Pelletier 1993
Creators: name: Behan-Pelletier, Valerie M.
name: Lindo, Zoë
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Eremaeidae
Eueremaeus
Eueremaeus marshalli

description: Eueremaeus marshalli Behan-Pelletier, 1993
 Geographic Location: YT, Richardson Mtns (Behan-Pelletier 1993b); Coastal Plain; Ivvavik NP, British Mtns; Eagle Plain (Behan-Pelletier 1997b); NT, Reindeer Station; Victoria Is. (Behan-Pelletier 1993b); BC: Isaiah Creek study site (Lindo & Stevenson 2007); Vancouver Is., Walbran Valley (Lindo & Winchester 2006, 2007; Lindo et al. 2008; Lindo 2010); Strathcona PP; Mainland, Manning PP; Garibaldi PP (Behan- Pelletier 1993b); AB: Kananaskis Valley (Behan-Pelletier 1993b; McLean & Parkinson 1998); Waterton Lakes NP (Behan-Pelletier 1993b); EMEND Site (Lindo & Visser 2004); Moose Pasture Research Site; ABMI Sites (Walter et al. 2014; Meehan et al. 2019); 35 km north of Fort McMurray (McAdams et al. 2018); SK: Moose Mountain PP; south of Val Marie (Behan-Pelletier 1993b); MB: Duck Mountain PP; Spruce Woods PP (Behan-Pelletier 1993b); ON: Algonquin PP (Behan-Pelletier 1993b); QC: Lac Megantic (Behan-Pelletier 1993b); NL: between Corner Brook and Little Grand Lake (Dwyer et al. 1997, 1998).
 Habitats: mesic tundra, moss, lichen, fungi, and mixed coniferous and deciduous litters; canopy of Western redcedar.
 Distribution: Nearctic.
description: Published as part of Behan-Pelletier, Valerie M. & Lindo, Zoë, 2019, Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska, pp. 1-180 in Zootaxa 4666 (1) on page 70, DOI: 10.11646/zootaxa.4666.1.1, http://zenodo.org/record/4000595
Controlling a quantum point junction on the surface of an antiferromagnetic topological insulator
Creators: name: Varnava, Nicodemos
name: Wilson, Justin H.
name: Pixley, J. H.
name: Vanderbilt, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The abstract notion of topology has led to profound insights into real materials. Notably, the surface and edges of topological materials can host physics, such as unidirectional charge or spin transport, that is unavailable in isolated one- and two-dimensional systems. However, to fully control the mixing and interference of edge-state wave functions, one needs robust and tunable junctions. We propose to achieve this control using an antiferromagnetic topological insulator that supports two distinct types of gapless unidirectional channels on its surface, one from antiferromagnetic domain walls and the other from single-height steps. The distinct geometric nature of these edge modes allows them to intersect robustly to form quantum point junctions, and their presence at the surface makes them subject to control by magnetic and electrostatic tips like those used in scanning probe microscopes. Prospects for realizing such junctions are encouraged by recent material candidate proposals, potentially leading to exciting applications in quantum computing and sensing.
Laser desorption - laser photoionization ion trap mass spectrometry for the direct analysis of solid samples
Creators: name: Specht, August Anders
Publisher: name: University of British Columbia
Year: 2009

description: This thesis describes work associated with the creation of a novel analytical instrument, a two-laser ion trap mass spectrometer. This device combines one of the most sensitive and selective direct solid sampling techniques, two-laser solid sampling, with a very versatile mass spectrometer, the ion trap. This work demonstrates some of the potential advantages associated with coupling these two techniques. The results from this work can be divided into three sections. Section one shows data associated with the development and characterization of this new instrument which couples IR laser desorption followed by UV laser photoionization and analysis using an ion trap mass spectrometer. For calibration, a new type of solid sample preparation method involving activated charcoal as the solid substrate was used. It was found that both the IR and UV intensity, and the delay between them, play an important role in both the magnitude and type of signals observed. A method of gas phase ion accumulation was also examined. Finally , this section demonstrates the technique's ability to provide direct qualitative information for PAH content for N.I.S.T. SRM 1944 river sediment with no sample pre-treatment. The second section of this thesis shows data relating to the detection of the pharmaceutical agent Spiperone directly on a solid biologically relevant tissue matrix. This data shows that the two-laser ion trap method is suitable for applications with complicated matrices with no need for sample pre-treatment. Finally, the third section of this thesis describes the addition of a third, tunable laser to the system. This laser allows for optical probing of the trapped ion cloud. Visible absorption spectra for the gas phase PAH cations isomers phenanthrene and anthracene are shown. The third laser also allows for the possibility of wavelength selective photodissociation of PAH isomers for resolving complicated isomer mixtures.
Mesoscopic versus Macroscopic division of current fluctuations
Creators: name: Rychkov, Valentin S.
name: Buttiker, Markus
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the current shot noise at a three terminal node in which one of the branches contains a noise generating source and the correlations are measured between the currents flowing through the other two branches. Interestingly, if the node is macroscopic, the current correlations are positive, whereas for a quantum coherent mesoscopic node anti-bunching of electrons leads to negative correlations. We present specific predictions which permit the experimental investigation of the crossover from quantum mechanical noise division to macroscopic noise noise division.
description: 4 pages, 3 figures
Additional file 6 of QSAR-derived affinity fingerprints (part 1): fingerprint construction and modeling performance for similarity searching, bioactivity classification and scaffold hopping
Creators: name: Škuta, C.
name: Cortés-Ciriano, I.
name: Dehaen, W.
name: Kříž, P.
name: Westen, G. J. P. Van
name: Tetko, I. V.
name: Bender, A.
name: Svozil, D.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Additional file 6. Similarity searching and biological activity classification tasks. Plots showing the performance of the QAFFP and Morgan2 fingerprints.
Temperature and entropy profiles of nearby cooling flow clusters observed with XMM-Newton
Creators: name: Piffaretti, Rocco
name: Jetzer, Philippe
name: Kaastra, Jelle
name: Tamura, Takayuki
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate temperature and entropy profiles of 13 nearby cooling flow clusters observed with the EPIC cameras of XMM-Newton. When normalized and scaled by the virial radius the temperature profiles turn out to be remarkably similar. At large radii the temperature profiles show a clear decline starting from a break radius at ~ 0.1 r_vir. The temperature decreases by ~30 % between 0.1 r_vir and 0.5 r_vir. As expected for systems where non-gravitational processes are of great importance, the scale length characterizing the central temperature drop is not found to be proportional to the virial radius of the system. The entropy of the plasma increases monotonically moving outwards almost proportional to the radius and the central entropy level is tightly correlated with the core radius of the X-ray emission. The dispersion in the entropy profiles is smaller if the empirical relation S \propto T^{0.65} is used instead of the standard self-similar relation S \propto T and, as expected for cooling flow clusters, no entropy cores are observed.
description: Accepted for publication in Astronomy and Astrophysics. 14 pages, 8 two columns figures in this version
title: Die Politisierung von Achtsamkeit
title: Extinction Rebellions gefühlvolle Protestpraktiken
titleType: Subtitle
Creators: name: Sauerborn, Elgen
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Achtsamkeit
subject: Subjektivierung
subject: Klimawandel
subject: Extinction Rebellion
subject: Gefühlsprogramme
subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::300 Sozialwissenschaften
subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::301 Soziologie, Anthropologie

description: Die Klimaschutzbewegung Extinction Rebellion (XR) bringt neben ihrem radikalen Protest durch zivilen Ungehorsam auch Narrative und Praktiken der Achtsamkeit zum Einsatz. Bewegungsinterne Leitlinien umfassen zahlreiche standardisierte und achtsamkeitsbasierte Gefühlsvorgaben und Selbsttechniken, die zum Zweck eines nachhaltigen Zusammenlebens vor allem das Wohlbefinden der Einzelnen forcieren. Diese subjektzentrierte Perspektive rückt vor dem Hintergrund von XRs politischem, an Gemeinwohl orientiertem Ansatz das gegenwärtig höchst populäre Gefühlsprogramm in ein neues Licht. Angesichts der soziologischen Kritik an der Achtsamkeit, die vorrangig deren Tendenz zur Entpolitisierung, Privatisierung und verstärkten Eigenverantwortung anprangert, wirft XRs neuartige, politisierte Rezeption zahlreiche Fragen auf. Der Beitrag zeigt daher anhand einer qualitativen Analyse von öffentlichen Dokumenten und Regelwerken, inwiefern die für ihre individualistische Disposition kritisierte Achtsamkeit in einem politischen Kontext eingesetzt wird und welche ambivalenten Folgen daraus sowohl für die Klimabewegung als auch das Konzept der Achtsamkeit selbst hervorgehen. Darauf aufbauend wird dargelegt, wie institutionalisierte Gefühlsprogramme in einer dezentral organisierten Bewegung ordnungsbildend und als Kontrollinstanz wirken können.
Eueremaeus masinasin Behan-Pelletier 1993
Creators: name: Behan-Pelletier, Valerie M.
name: Lindo, Zoë
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Eremaeidae
Eueremaeus
Eueremaeus masinasin

description: Eueremaeus masinasin Behan-Pelletier, 1993
 Geographic Location: AB: Writing-on-Stone PP; Cypress Hills PP; Kananaskis Country; Waterton Lakes NP; Roy Berg Kinsella Research Ranch (Behan-Pelletier 1993b; Newton & Proctor 2013); ABMI Sites (Walter et al. 2014); SK: Frenchman River Valley; Cypress Hills PP; Battlefords PP; Big Muddy Badlands (Behan-Pelletier 1993b); MB: Riding Mountain NP (Behan-Pelletier 1993b).
 Habitats: grassland species reported from sod, moss, assorted litter, dry shortgrass prairie, and alpine grasslands.
 Distribution: Nearctic.
description: Published as part of Behan-Pelletier, Valerie M. & Lindo, Zoë, 2019, Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska, pp. 1-180 in Zootaxa 4666 (1) on page 70, DOI: 10.11646/zootaxa.4666.1.1, http://zenodo.org/record/4000595
On Evaluation of Nonplanar Diagrams in Noncommutative Field Theory
Creators: name: Liao, Yi
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This is a technical work about how to evaluate loop integrals appearing in one loop nonplanar (NP) diagrams in noncommutative (NC) field theory. The conventional wisdom says that, barring the ultraviolet/infrared (UV/IR) mixing problem, NP diagrams whose planar counterparts are UV divergent are rendered finite by NC phases that couple the loop momentum to the external NC momentum ρ^μ=θ^{μν}p_ν. We show that this is generally not the case. We find that subtleties arise already on Euclidean spacetime. The situation is even worse in Minkowski spacetime due to its indefinite metric. We compare different prescriptions that may be used to evaluate loop integrals in ordinary theory. They are equivalent in the sense that they always yield identical results. However, in NC theory there is no a priori reason that these prescriptions, except for the defining one built in Feynman propagator, are physically justified. Employing them can lead to ambiguous results. For ρ^2>0, the NC phase can worsen the UV property of loop integrals instead of always improving it in high dimensions. We explain how this surprising phenomenon comes about from the indefinite metric. For ρ^2<0, the NC phase improves the UV property and softens the quadratic UV divergence in ordinary theory to a bounded but indefinite UV oscillation. We employ a cut-off method to quantify the new UV non-regular terms. For ρ^2>0, these terms are generally complex and thus also harm unitarity. As the new terms are not available in the Lagrangian, our result casts doubts on previous demonstrations of one loop renormalizability based exclusively upon analysis of planar diagrams, especially in theories with quadratic divergences.
description: 29 pages, no figs; v2: (1) some clarifying discussions concerning cut-off method are added at the end of subsec 2.2 and in subsec 4.5; (2) typos are fixed and some minor rewordings are made; (3) acknowledgements extended. Version to appear in Nucl. Phys. B
Nature of Dynamic Relationships Between Farm Real Estate Values and Federal Farm Program Payments
Creators: name: Shaik, Saleem
name: Miljkovic, Dragan
name: Shaik, Saleem
name: Miljkovic, Dragan
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural Finance
subject: Farm Management
subject: Dynamics
subject: Farm programs payments
subject: Farm real estate values
subject: Vector error correction model
subject: U.S. data
subject: 1933-2006

description: The objective of this study is to test the dynamic relationships among variables including farm real estate values, farm returns, farm program payments, and real interest rates in an income capitalization model. Our analysis is unique in multiple ways: (1) it covers the period beginning with the introduction of the first farm bill in 1933 through 2006; (2) assumes endogeneity of the variables, and (3) develops a dynamic modeling framework. Endogeneity is assumed among farm real estate values, farm program payments, and farm receipts since the direction of causality is unclear from a theoretical standpoint. Results indicate that policy makers are reactive rather than pro-active in making transfers to farmers. Once farm program payments are implemented, payments have positive impacts only in the short run on the value of farm real estate. However, considering endogeneity, the model suggests that it is possible that farm program payments have a lasting positive indirect impact (via farm returns) on the value of farm real estate.
A PARTIAL EQUILIBRIUM MODEL OF THE LINKAGES BETWEEN ANIMAL WELFARE, TRADE AND THE ENVIRONMENT IN SCOTLAND
Creators: name: Toma, Luiza
name: Ashworth, Cheryl J.
name: Stott, Alistair W.
name: Toma, Luiza
name: Ashworth, Cheryl J.
name: Stott, Alistair W.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Research Methods/ Statistical Methods
subject: Pig Welfare
subject: Trade
subject: Environment
subject: Scotland
subject: Partial Equilibrium Model.

description: This research analyses the impacts of a scientific advance that improves animal welfare, upon the environment and trade in Scotland using partial equilibrium (PE) modelling. The science improves pig neonatal survival through improved (high fibre) sow diets used before mating. Our model simulates the effects of animal welfare changes on the pig production systems (pig meat) and further on trade flows (trade in pig meat) and environment (water and air pollution). We consider two animal welfare simulation scenarios, namely the status quo – no animal welfare change as regards pig neonatal mortality (baseline scenario) and the case of improving pig neonatal survival (alternative scenario) and compare the impacts on trade and environment between the two scenarios during the simulation horizon 2008-2015. The results show that the increase in animal welfare has a lower impact on the environment in the alternative scenario compared to the baseline scenario (by about 6% at the end of the simulation horizon) and a positive impact on net trade in the alternative scenario compared to the baseline scenario (by about 13% at the end of the simulation horizon).
Van den Ven, P., Saint Jérome et la Vie du moine Malchus le Captif
Creators: name: Kugener, M. A.
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 2 Nr. 1 (1902): Oriens christianus, Band 2, Heft 1
Asymmetric induction in the solid state photoisomerization of some three-membered ring compounds
Creators: name: Chong, Ching Wah (Kenneth)
Publisher: name: University of British Columbia
Year: 2009

description: The ionic chiral auxiliary approach to asymmetric induction was investigated in two types of photoisomerizations of cyclopropyl compounds in the solid state. Three different tri-substituted cyclopropyl carboxylic acids were prepared. Upon irradiation, the achiral starting materials undergo cis-trans isomerization to form chiral products. Salts were formed between the achiral acids and optically pure amines. The resulting chiral samples were irradiated in the solid state, and the photoproducts analyzed for enantiomeric purity. Enantiomeric excesses ranging from poor to excellent were obtained. The enantioselectivity observed is controlled by both topochemical and chiral conformational effects. The same method of asymmetric induction was applied to study the solid state photochemistry of two achiral cyclopropyl ketoacids, which underwent the Norrish type II cleavage reactions to give chiral olefins. Enantioselectivities ranging from moderate to excellent were observed when optically active salts of these acids were irradiated in the crystalline state. The study presents the first successful asymmetric induction in a Norrish type II cleavage reaction. The starting materials are thermally reactive and undergo the enolene rearrangement to give the same chiral olefins. The salts prepared from one of the ketoacids remained solid at the reactive temperature, and the product showed low to moderate ee.
Semigroups for dynamical processes on metric graphs
Creators: name: Fijavž, Marjeta Kramar
name: Puchalska, Aleksandra
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 47D06, 35R02, 35L50, 35K51

description: We present the operator semigroups approach to first- and second-order dynamical systems taking place on metric graphs. We briefly survey the existing results and focus on the well-posedness of the problems with standard vertex conditions. Finally, we show two applications to biological models.
description: To be published in Phil. Trans. R. Soc. A 378: 20190619
Eueremaeus michaeli Behan-Pelletier 1993
Creators: name: Behan-Pelletier, Valerie M.
name: Lindo, Zoë
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Eremaeidae
Eueremaeus
Eueremaeus michaeli

description: Eueremaeus michaeli Behan-Pelletier, 1993
 Geographic Location: BC: Manning PP; Osoyoos, Madeline Lake; Cathedral PP (Behan-Pelletier 1993b).
 Habitats: hemlock, cedar, Ponderosa pine, and Larix litter.
 Distribution: Canada.
description: Published as part of Behan-Pelletier, Valerie M. & Lindo, Zoë, 2019, Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska, pp. 1-180 in Zootaxa 4666 (1) on page 70, DOI: 10.11646/zootaxa.4666.1.1, http://zenodo.org/record/4000595
An unexpected connection between branching processes and optimal stopping
Creators: name: Assaf, David
name: Goldstein, Larry
name: Samuel-Cahn, Ester
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G40, 60J80

description: A curious connection exists between the theory of optimal stopping for independent random variables, and branching processes. In particular, for the branching process $Z_n$ with offspring distribution $Y$, there exists a random variable $X$ such that the probability $P(Z_n=0)$ of extinction of the $n$th generation in the branching process equals the value obtained by optimally stopping the sequence $X_1,...,X_n$, where these variables are i.i.d distributed as $X$. Generalizations to the inhomogeneous and infinite horizon cases are also considered. This correspondence furnishes a simple `stopping rule' method for computing various characteristics of branching processes, including rates of convergence of the $n^{th}$ generation's extinction probability to the eventual extinction probability, for the supercritical, critical and subcritical Galton-Watson process. Examples, bounds, further generalizations and a connection to classical prophet inequalities are presented. Throughout, the aim is to show how this unexpected connection can be used to translate methods from one area of applied probability to another, rather than to provide the most general results.
description: 20 pages
IMPACT ASSESSMENT OF THE 2003 CAP REFORM AND THE NITRATE DIRECTIVE ON THE ARABLE FARMING SYSTEM IN THE MIDI-PYRÉNÉES REGION: BIO-ECONOMIC MODELING AT FIELD, FARM AND REGIONAL LEVELS
Creators: name: Louhichi, Kamel
name: Belhouchette, Hatem
name: Wery, Jacques
name: Therond, Olivier
name: Flichman, Guillermo
name: Louhichi, Kamel
name: Belhouchette, Hatem
name: Wery, Jacques
name: Therond, Olivier
name: Flichman, Guillermo
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Research Methods/ Statistical Methods
subject: Integrated assessment
subject: Agricultural Policy
subject: Nitrate Directive
subject: Bioeconomic modelling
subject: multi-scale analysis.

description: This paper analyses the impact of the 2003 CAP reform (the so-called Fischler Reform) and its interaction with the Nitrate Directive on the sustainability of selected arable farming systems in a French region (Midi-Pyrénées). The Nitrate Directive is one of the oldest EU environmental programs designed to reduce water pollution by nitrate from agricultural sources, through a set of measures, defined at regional level, and mandatory for farmers of vulnerable zones. This impact analysis is performed through a bio-economic modelling framework coupling the crop model CropSyst and the farm-based model FSSIM developed, within the EU FP6 SEAMLESS project (Van Ittersum et al., 2008). The 2003 CAP reform was compared first to the continuation of Agenda 2000 Regulations and then to a policy scenario combining the CAP reform with the application of the Nitrate Directive. Compared to the continuation of Agenda 2000 Regulations, the implementation of the 2003 CAP reform leads to (i) a decrease of durum wheat area, as the supplement for durum wheat in traditional production zones was reduced and integrated in the single payment scheme, (ii) a slight increase in the land used for irrigated crops, especially for maize grain, considering that 25% of the payments for these crops remain coupled and (iii) an amelioration of farm income due to a better crop allocation. Regarding the environmental results, the 2003 CAP reform induces a decrease of nitrate leaching mostly because of the drop in the level of durum wheat growing under cereal rotations in profit of soft wheat-sunflower rotation which generates less pollution levels. The impact analysis of the policy scenario shows that the potential 3% premium cut is not enough to compel farmers to adopt the Nitrate Directive and to substitute entirely the current activities by the alternative ones based on better N management. The farm income is marginally affected in spite of this premium cut thanks to the implementation of certain alternative activities which are more competitive. The impact on nitrate leaching is not always positive and swings between -6% to +5% depending on farm types. This implies that the partial adoption of better N management is not sufficient to ensure a reduction of leached nitrate. A sensitivity analysis shows that 17% of premium cut is required to enforce all arable farmers in the region to implement this directive.
PRESSURE FACTORS AFFECTING LOMBARDY AGRICULTURAL SYSTEM: THE ENVIRONMENTAL CONSEQUENCES OF THE FISCHLER REFORM
Creators: name: Bulgheroni, Claudia
name: Sali, Guido
name: Bulgheroni, Claudia
name: Sali, Guido
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Research Methods/ Statistical Methods
subject: CAP modelling
subject: Fischler Reform
subject: Positive Mathematical Programming
subject: Regional model
subject: Water Frame Directive

description: This paper presents a regional model, based on Positive Mathematical Programming, which aims to evaluate the consequences of Fischler reform on the agricultural sector of the Lombardy irrigated lowland (Northern Italy). The model main focus is to quantify the agricultural land use changes due to the farmers reaction to the CAP reform main issues, such as single payment, and to simulate possible scenarios for the future. The model takes into account also the Water Frame Directive principles, in order to combine the assessment of both CAP issues and the potential irrigation water supplies reduction, which could deeply affect the area. The model input are obtained by means of the integration between FADN and SIARL (Agricultural Information System of Lombardy Region) information, in order to fit the territorial dimension. The simulation results of 11 different scenarios are discussed.
A regularity criterion of the 3D MHD equations involving one velocity and one current density component in Lorentz space
Creators: name: Agarwal, R.
name: Gala, S.
name: Ragusa, M. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q35 (Primary) 35B65, 76D05 (Secondary)

description: In this paper, we study the regularity criterion of weak solutions to the three-dimensional (3D) MHD equations. It is proved that the solution $(u,b)$ becomes regular provided that one velocity and one current density component of the solution satisfy% \begin{equation} u_{3}\in L^{\frac{30α}{7α-45}}\left( 0,T;L^{α,\infty }\left( \mathbb{R}^{3}\right) \right) \text{ \ \ \ with \ \ }\frac{45}{7}% \leq α\leq \infty , \label{eq01} \end{equation}% and \begin{equation} j_{3}\in L^{\frac{2β}{2β-3}}\left( 0,T;L^{β,\infty }\left( \mathbb{R}^{3}\right) \right) \text{ \ \ \ with \ \ }\frac{3}{2}\leq β\leq \infty , \label{eq02} \end{equation}% which generalize some known results.
description: Zeitschrift f\"ur angewandte Mathematik und Physik
Recalibrating decadal climate predictions – what is an adequate model for the drift?
Creators: name: Pasternack, Alexander
name: Grieger, Jens
name: Rust, Henning W.
name: Ulbrich, Uwe
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: climate predictions
subject: Model selection for DeFoReSt
subject: toy model experiments
subject: climate surface temperature forecasts
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie

description: Near-term climate predictions such as multi-year to decadal forecasts are increasingly being used to guide adaptation measures and building of resilience. To ensure the utility of multi-member probabilistic predictions, inherent systematic errors of the prediction system must be corrected or at least reduced. In this context, decadal climate predictions have further characteristic features, such as the long-term horizon, the lead-time-dependent systematic errors (drift) and the errors in the representation of long-term changes and variability. These features are compounded by small ensemble sizes to describe forecast uncertainty and a relatively short period for which typical pairs of hindcasts and observations are available to estimate calibration parameters. With DeFoReSt (Decadal Climate Forecast Recalibration Strategy), Pasternack et al. (2018) proposed a parametric post-processing approach to tackle these problems. The original approach of DeFoReSt assumes third-order polynomials in lead time to capture conditional and unconditional biases, second order for dispersion and first order for start time dependency. In this study, we propose not to restrict orders a priori but use a systematic model selection strategy to obtain model orders from the data based on non-homogeneous boosting. The introduced boosted recalibration estimates the coefficients of the statistical model, while the most relevant predictors are selected automatically by keeping the coefficients of the less important predictors to zero. Through toy model simulations with differently constructed systematic errors, we show the advantages of boosted recalibration over DeFoReSt. Finally, we apply boosted recalibration and DeFoReSt to decadal surface temperature forecasts from the German initiative Mittelfristige Klimaprognosen (MiKlip) prototype system. We show that boosted recalibration performs equally as well as DeFoReSt and yet offers a greater flexibility.
FACTORS INFLUENCING ORGANIZATIONAL STRUCTURE IN THE FOOD MANUFACTURING, CHEMICAL, AGRICULTURAL WHOLESALING AND BIOTECHNOLOGY INDUSTRIES
Creators: name: Roucan-Kane, Maud
name: Pena, Inaki
name: Boehlje, Michael
name: Akridge, Jay T.
name: Roucan-Kane, Maud
name: Pena, Inaki
name: Boehlje, Michael
name: Akridge, Jay T.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Industrial Organization
subject: Transaction costs
subject: strategic alliances
subject: food manufacturing
subject: chemical
subject: agricultural wholesaling
subject: ag-biotechnology
subject: investment strategy
subject: innovation

description: The objective of this study is to identify factors determining a business investment strategy (i.e., the choice of investment commitment and form of organizational structure) in the food manufacturing, chemical, agricultural wholesaling and biotechnology industries. Propositions regarding strategic alliance theories are tested on over 400 inter-firm collaborative agreements using secondary data from major US and European companies for the 1994-97 period. Results suggest that transactions with lower technological and resource uncertainty levels are more likely to result in investments with a higher commitment level (i.e., acquisitions or majority equity-based controlling investments). The investment commitment level embedded in a single business transaction seems to be affected not only by a goal of cost minimization, but also by strategic motives and firm and industry factors.
Analytical solution for residual stress and strain preserved in anisotropic inclusion entrapped in an isotropic host
Creators: name: Zhong, Xin
name: Dabrowski, Marcin
name: Jamtveit, Bjørn
name: Zhong, Xin
name: Dabrowski, Marcin
name: Jamtveit, Bjørn
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: mineral inclusion entrapment
subject: isotropic
subject: mineral inclusion
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie

description: Raman elastic thermobarometry has recently been applied in many petrological studies to recover the pressure and temperature (P–T) conditions of mineral inclusion entrapment. Existing modelling methods in petrology either adopt an assumption of a spherical, isotropic inclusion embedded in an isotropic, infinite host or use numerical techniques such as the finite-element method to simulate the residual stress and strain state preserved in the non-spherical anisotropic inclusions. Here, we use the Eshelby solution to develop an analytical framework for calculating the residual stress and strain state of an elastically anisotropic, ellipsoidal inclusion in an infinite, isotropic host. The analytical solution is applicable to any class of inclusion symmetry and an arbitrary inclusion aspect ratio. Explicit expressions are derived for some symmetry classes, including tetragonal, hexagonal, and trigonal. The effect of changing the aspect ratio on residual stress is investigated, including quartz, zircon, rutile, apatite, and diamond inclusions in garnet host. Quartz is demonstrated to be the least affected, while rutile is the most affected. For prolate quartz inclusion (c axis longer than a axis), the effect of varying the aspect ratio on Raman shift is demonstrated to be insignificant. When c/a=5, only ca. 0.3 cm−1 wavenumber variation is induced as compared to the spherical inclusion shape. For oblate quartz inclusions, the effect is more significant, when c/a=0.5, ca. 0.8 cm−1 wavenumber variation for the 464 cm−1 band is induced compared to the reference spherical inclusion case. We also show that it is possible to fit an effective ellipsoid to obtain a proxy for the averaged residual stress or strain within a faceted inclusion. The difference between the volumetrically averaged stress of a faceted inclusion and the analytically calculated stress from the best-fitted effective ellipsoid is calculated to obtain the root-mean-square deviation (RMSD) for quartz, zircon, rutile, apatite, and diamond inclusions in garnet host. Based on the results of 500 randomly generated (a wide range of aspect ratio and random crystallographic orientation) faceted inclusions, we show that the volumetrically averaged stress serves as an excellent stress measure and the associated RMSD is less than 2 %, except for diamond, which has a systematically higher RMSD (ca. 8 %). This expands the applicability of the analytical solution for any arbitrary inclusion shape in practical Raman measurements.
Pigeonpea improvement
Creators: name: Ryan, James G.
name: Ryan, James G.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: International Development
subject: Production Economics
subject: pigeonpea
subject: ACIAR
subject: economic impact
subject: yield
subject: plant breeding
subject: Fiji
subject: Indonesia
subject: India
subject: Thailand
subject: Australia

description: This study was commissioned by the Australian Centre for International Agricultural Research (ACIAR) to evaluate the economic impact of two projects (8201 and 8567) for which ACIAR provided support from 1982–89. These projects were aimed at the improvement of the grain yield potential of pigeonpea (Cajanus cajan) using modern plant breeding, along with associated physiological, agronomic, processing and socioeconomic research. The commissioned organisation in Australia was the University of Queensland. The partners were: Fiji (Ministry of Primary Industries, Native Land Development Corporation); Indonesia (Central Research Institute for Food Crops, Agency for Agricultural Research and Development); India (Indian Council for Agricultural Research, International Crops Research Institute for the Semi-Arid Tropics); and Thailand (Field Crops Research Institute, Department of Agriculture, Kasetsart University, Prince of Songkla University, Chiang Mai University). The initial project was the first formal ACIAR collaborative research project. It aimed to (i) develop widely adapted short-season pigeonpea (SSPP) to replace the traditional longer-season cultivars and (ii) to design management strategies which allowed their full grain yield potential to be realised and demonstrated. Prior to the ACIAR projects the University of Queensland team was targeting their research on these technology options primarily for Australia. The ACIAR projects broadened the scientific and geographic scope of the work to the above four developing countries. The primary focus of this evaluation is on India, where around 90 per cent of the world’s pigeonpeas are grown and where adoption of the SSPP technology options has been both significant and partially documented. There has been limited impact in the other three developing countries and Australia. Brennan and Bantilan (1998) have recently analysed the economic impact of research undertaken by the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) on SSPP on Australia and concluded that it is also very limited. Neither of the two ACIAR projects which are the subject of the present evaluation were included in the review of 71 ACIAR projects by Auld (1990) nor the recent assessment by Mauldon (1998). The time and resources for the economic evaluation were very limited so resort had to be made to a mail survey of key collaborators in the projects, secondary data sources, along with various assumptions and estimates. The sources and bases of these are detailed in the report.
Probing anisotropies of gravitational-wave backgrounds with a space-based interferometer: geometric properties of antenna patterns and their angular power
Creators: name: Kudoh, Hideaki
name: Taruya, Atsushi
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the sensitivity to anisotropies of stochastic gravitational-wave backgrounds (GWBs) observed via space-based interferometer. In addition to the unresolved galactic binaries as the most promising GWB source of the planned Laser Interferometer Space Antenna (LISA), the extragalactic sources for GWBs might be detected in the future space missions. The anisotropies of the GWBs thus play a crucial role to discriminate various components of the GWBs. We study general features of antenna pattern sensitivity to the anisotropies of GWBs beyond the low-frequency approximation. We show that the sensitivity of space-based interferometer to GWBs is severely restricted by the data combinations and the symmetries of the detector configuration. The spherical harmonic analysis of the antenna pattern functions reveals that the angular power of the detector response increases with frequency and the detectable multipole moments with effective sensitivity h_{eff} \sim 10^{-20} Hz^{-1/2} may reach $\ell \sim$ 8-10 at $f \sim f_*=10$ mHz in the case of the single LISA detector. However, the cross correlation of optimal interferometric variables is blind to the monopole (\ell=0) intensity anisotropy, and also to the dipole (\ell=1) in some case, irrespective of the frequency band. Besides, all the self-correlated signals are shown to be blind to the odd multipole moments (\ell=odd), independently of the frequency band.
description: RevTex4, 22 pages, 6 figures (low resolution), typos corrected
Reducing fish losses due to Epizootic Ulcerative Syndrome - An Ex Ante Evaluation
Creators: name: Centre For International Economics
name: Centre For International Economics
Publisher: name: Unknown
Year: 1998
Subjects: subject: Agricultural and Food Policy
subject: Food Security and Poverty
subject: International Development
subject: Livestock Production/Industries
subject: fish
subject: production
subject: Australia
subject: Indonesia
subject: Thailand
subject: epizootic ulcerative syndrome
subject: disease

description: The Australian Centre for International Agricultural Research (ACIAR) project no. 9130 established causes and control measures for epizootic ulcerative syndrome, a major killer of wild and cultured fish. The project cost $1.7 million dollars and, based on conservative assumptions, could yield net benefits (in present value terms) of $56 million. These significant benefits are a result of the importance of fish production in Australia, Indonesia and Thailand, both as a commercial crop and a source of subsistence income. These benefits are based on the assumption that the knowledge obtained from the project is actually adopted by fish producers and others. There is no guarantee of this, and the results should be interpreted in that light. This also suggests that ACIAR could achieve high leverage from funds devoted to increasing rates of adoption.
Eueremaeus nahani Behan-Pelletier 1993
Creators: name: Behan-Pelletier, Valerie M.
name: Lindo, Zoë
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Eremaeidae
Eueremaeus
Eueremaeus nahani

description: Eueremaeus nahani Behan-Pelletier, 1993
 Geographic Location: YT: Carcross Sand Dunes; Northfork Pass (Behan-Pelletier 1993b); Ogilvie Mtns (Behan-Pelletier 1997b).
 Habitats: Lodgepole pine litter; mixed tundra vegetation.
 Distribution: Nearctic.
description: Published as part of Behan-Pelletier, Valerie M. & Lindo, Zoë, 2019, Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska, pp. 1-180 in Zootaxa 4666 (1) on page 70, DOI: 10.11646/zootaxa.4666.1.1, http://zenodo.org/record/4000595
Production and deceleration of a pulsed beam of metastable NH ($a ^1Δ$) radicals
Creators: name: van de Meerakker, Sebastiaan Y. T.
name: Labazan, Irena
name: Hoekstra, Steven
name: Küpper, Jochen
name: Meijer, Gerard
Publisher: name: arXiv
Year: 2005
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report on the production of a pulsed molecular beam of metastable NH ($a ^1Δ$) radicals and present first results on the Stark deceleration of the NH ($a ^1Δ, J=2, MΩ=-4$) radicals from 550 m/s to 330 m/s. The decelerated molecules are excited on the spin-forbidden $A ^3Π\leftarrow a ^1Δ$ transition, and detected via their subsequent spontaneous fluorescence to the $X ^3Σ^{-}, v"=0$ ground-state. These experiments demonstrate the feasibility of our recently proposed scheme [Phys. Rev. A 64 (2001) 041401] to accumulate ground-state NH radicals in a magnetic trap.
description: 11 pages, 4 figures, v2: fixed author name for web-abstract, no changes to manuscript