cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exploring the origin of thick disks using the NewHorizon and Galactica simulations
Creators: name: Park, Minjung J.
name: Yi, Sukyoung K.
name: Peirani, Sebastien
name: Pichon, Christophe
name: Dubois, Yohan
name: Choi, Hoseung
name: Devriendt, Julien
name: Kaviraj, Sugata
name: Kimm, Taysun
name: Kraljic, Katarina
name: Volonteri, Marta
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Ever since a thick disk was proposed to explain the vertical distribution of the Milky Way disk stars, its origin has been a recurrent question. We aim to answer this question by inspecting 19 disk galaxies with stellar mass greater than $10^{10}\,\rm M_\odot$ in recent cosmological high-resolution zoom-in simulations: Galactica and NewHorizon. The thin and thick disks are reasonably reproduced by the simulations with scale heights and luminosity ratios as observed. We then spatially classify the thin and thick disks and find that the thick disk stars are older, metal-poorer, kinematically-hotter, and higher in accreted star fraction, while both disks are dominated by the stars formed in situ. Half of the in-situ stars in the thick disks are formed before the galaxies develop their disks, and the rest are formed in spatially and kinematically thinner disks and then thickened with time by heating. However, the 19 galaxies have various properties and evolutionary routes, highlighting the need for statistically-large samples to draw general conclusions. We conclude from our simulations that the thin and thick disk components are not entirely distinct in terms of formation processes, but rather markers of the evolution of galactic disks. Moreover, as the combined result of the thickening of the existing disk stars and the continued formation of young thin-disk stars, the vertical distribution of stars does not change much after the disks settle, pointing to the modulation of both orbital diffusion and star formation by the same confounding factor: the proximity of galaxies to marginal stability.
description: Accepted for publication in ApJS
Toward accurate polynomial evaluation in rounded arithmetic
Creators: name: Demmel, James
name: Dumitriu, Ioana
name: Holtz, Olga
Publisher: name: arXiv
Year: 2005
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Complexity (cs.CC)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 65Y20, 68Q05, 68Q25, 65F30, 68W40, 68W25

description: Given a multivariate real (or complex) polynomial $p$ and a domain $\cal D$, we would like to decide whether an algorithm exists to evaluate $p(x)$ accurately for all $x \in {\cal D}$ using rounded real (or complex) arithmetic. Here ``accurately'' means with relative error less than 1, i.e., with some correct leading digits. The answer depends on the model of rounded arithmetic: We assume that for any arithmetic operator $op(a,b)$, for example $a+b$ or $a \cdot b$, its computed value is $op(a,b) \cdot (1 + δ)$, where $| δ|$ is bounded by some constant $ε$ where $0 < ε\ll 1$, but $δ$ is otherwise arbitrary. This model is the traditional one used to analyze the accuracy of floating point algorithms.Our ultimate goal is to establish a decision procedure that, for any $p$ and $\cal D$, either exhibits an accurate algorithm or proves that none exists. In contrast to the case where numbers are stored and manipulated as finite bit strings (e.g., as floating point numbers or rational numbers) we show that some polynomials $p$ are impossible to evaluate accurately. The existence of an accurate algorithm will depend not just on $p$ and $\cal D$, but on which arithmetic operators and which constants are are available and whether branching is permitted. Toward this goal, we present necessary conditions on $p$ for it to be accurately evaluable on open real or complex domains ${\cal D}$. We also give sufficient conditions, and describe progress toward a complete decision procedure. We do present a complete decision procedure for homogeneous polynomials $p$ with integer coefficients, ${\cal D} = \C^n$, and using only the arithmetic operations $+$, $-$ and $\cdot$.
description: 54 pages, 6 figures; refereed version; to appear in Foundations of Computational Mathematics: Santander 2005, Cambridge University Press, March 2006
Management of climate risks in the wine sector: a field study on risky behaviour
Creators: name: Ben Salk, Sana
name: Blondel, Serge
name: Daniel, Christophe
name: Deffains-Crapsky, Catherine
name: Jutard, Catherine
name: Sejourne, Bruno
name: Ben Salk, Sana
name: Blondel, Serge
name: Daniel, Christophe
name: Deffains-Crapsky, Catherine
name: Jutard, Catherine
name: Sejourne, Bruno
Publisher: name: Unknown
Year: 2007
Subjects: subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Risk and Uncertainty
subject: Expected utility
subject: Field experiments
subject: Management of climate risks
subject: Paradoxes

description: In agriculture, there is need for a deeper analysis of management of climate risks, because the farmers appear to have a paradoxical position: they perceived that they are strongly exposed to climate risks but, they do not want to pay for adapted tools, arguing that this is too expensive or complex. However, under risk, it is well-known that the decision-makers could be subject to paradox (Allais for example). Our assumption is that to know better the behaviours of farmers in general risky situations will help to understand their reluctance to use the weather market. We conducted a study over the wine growers in the Maine-et-Loire department. 60 wine growers have responded to the questionnaire about climate risk management, and 29 amongst them have completed the second questionnaire about risky behaviours. Results will be presented at the EAAE congress.
Different Approaches for Moller's Energy in the Kasner-type Space-time
Creators: name: Salti, Mustafa
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper has been removed by arXiv administrators because it plagiarizes gr-qc/0011027, "Viscous cosmologies in scalar-tensor theories for Kasner type metrics," by M. Cataldo, S. del Campo and P. Salgado; Phys. Rev. D 41, 1086 (1990), "Energy associated with a Kerr-Newman black hole," by K.S. Virbhadra; and gr-qc/0303034, "The energy of the universe in teleparallel gravity," by T. Vargas.
description: This submission has been withdrawn by arXiv administrators due to inappropriate text reuse from external sources
Introductions of Invasive Species: Failure of the Weaker Link
Creators: name: Burnett, Kimberly M.
name: Burnett, Kimberly M.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Resource /Energy Economics and Policy
subject: weaker link
subject: invasive species
subject: public good aggregation

description: The prevention of invasive species is modeled as a "weaker link" public good. Under the weaker link aggregation technology, individual contributions beyond the lowest level will provide benefits, but these benefits progressively decline as contributions exceed the minimum. A two-region model is constructed, assuming incomplete information concerning costs of provision. This framework allows us to explain why we observe underinvestment in prevention, how information facilitates efficiency, and under what conditions information is most relevant. Specific implications regarding improved invasive species prevention policy are extracted and discussed.
[Cupeño I: Vocabulary, sentences, plural, possessives]
Creators: name: Nolasquez, Roscinda
name: Hill, Jane
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: cup

description: Includes index of contents of all field notebooks. From index: "1-52 basic vocabulary items, some plurals, a few sentences. 59 possessives, plurals to p. 120."
Additional file 3 of Phenomic characterization of Crotalaria germplasm for crop improvement
Creators: name: Muli, Joshua Kiilu
name: Neondo, Johnstone O.
name: Kamau, Peter K.
name: Odari, Eddy
name: Budambula, Nancy L. M.
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Table S4. Correlation of cultivation aspects of edible Crotalaria species based on 37 sampled farmers in Kenya.
Lell, Joachim (hrsg.): Ehe und Mischehe im ökumenischen Dialog
Creators: name: Schmidt-Lauber, Hans-Christoph
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 29 Nr. 4 (1980): Ökumenische Rundschau, Band 29, Heft 4
Varied phenomenology of models displaying dynamical large-deviation singularities
Creators: name: Whitelam, Stephen
name: Jacobson, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Singularities of dynamical large-deviation functions are often interpreted as the signal of a dynamical phase transition and the coexistence of distinct dynamical phases, by analogy with the correspondence between singularities of free energies and equilibrium phase behavior. Here we study models of driven random walkers on a lattice. These models display large-deviation singularities in the limit of large lattice size, but the extent to which each model's phenomenology resembles a phase transition depends on the details of the driving. We also compare the behavior of ergodic and non-ergodic models that present large-deviation singularities. We argue that dynamical large-deviation singularities indicate the divergence of a model timescale, but not necessarily one associated with cooperative behavior or the existence of distinct phases.
Cosmic ray neon, Wolf-Rayet stars, and the superbubble origin of galactic cosmic rays
Creators: name: Binns, W. R.
name: Wiedenbeck, M. E.
name: Arnould, M.
name: Cummings, A. C.
name: George, J. S.
name: Goriely, S.
name: Israel, M. H.
name: Leske, R. A.
name: Mewaldt, R. A.
name: Meynet, G.
name: Scott, L. M.
name: Stone, E. C.
name: von Rosenvinge, T. T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The abundances of neon isotopes in the galactic cosmic rays (GCRs) are reported using data from the Cosmic Ray Isotope Spectrometer (CRIS) aboard the Advanced Composition Explorer (ACE). We compare our ACE-CRIS data for neon and refractory isotope ratios, and data from other experiments, with recent results from two-component Wolf-Rayet (WR) models. The three largest deviations of GCR isotope ratios from solar-system ratios predicted by these models are indeed present in the GCRs. Since WR stars are evolutionary products of OB stars, and most OB stars exist in OB associations that form superbubbles, the good agreement of these data with WR models suggests that superbubbles are the likely source of at least a substantial fraction of GCRs.
description: 22 pages, 6 figures Accepted for publication by ApJ
Stability and interaction of compactons in the sublinear KdV equation
Creators: name: Pelinovsky, Dmitry E.
name: Slunyaev, Alexey V.
name: Kokorina, Anna V.
name: Pelinovsky, Efim N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Compactons are studied in the framework of the Korteweg-de Vries (KdV) equation with the sublinear nonlinearity. Compactons represent localized bell-shaped waves of either polarity which propagate to the same direction as waves of the linear KdV equation. Their amplitude and width are inverse proportional to their speed. The energetic stability of compactons with respect to symmetric compact perturbations with the same support is proven analytically. Dynamics of compactons is studied numerically, including evolution of pulse-like disturbances and interactions of compactons of the same or opposite polarities. Compactons interact inelastically, though almost restore their shapes after collisions. Compactons play a two-fold role of the long-living soliton-like structures and of the small-scale waves which spread the wave energy.
description: 22 pages, 8 figures
The Economics of Terrestrial Invasive Species: A Review of the Literature
Creators: name: Olson, Lars J.
name: Olson, Lars J.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Resource /Energy Economics and Policy
subject: terrestrial invasive species
subject: prevention
subject: control
subject: international trade
subject: bioeconomic

description: This paper reviews the literature on the economics of invasive species management as it applies to invasive species in general and terrestrial invasive species in particular. The paper summarizes a number of recent studies that assign values to the economic impact of terrestrial invasive species on a national scale. This is followed by a review of the economic literature on control and prevention of a biological invasion and the literature on international trade and trade policy with invasive species. The paper then reviews selected studies on terrestrial invasive plants, animals, and microbes, respectively.
A tale of three diagonalizations
Creators: name: Haber, Howard E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In addition to the diagonalization of a normal matrix by a unitary similarity transformation, there are two other types of diagonalization procedures that sometimes arise in quantum theory applications -- the singular value decomposition and the Autonne-Takagi factorization. In these pedagogical notes, we carry out each of these diagonalization procedures for the most general $2\times 2$ matrices for which the corresponding diagonalization is possible and provide explicit analytical results in each of the three cases.
description: 27 pages; version 2 adds a footnote 14 and improves the pdf output by modifying the implementation of hyperref; version 3 corrects an error in eq. (78)
Additional file 4 of Phenomic characterization of Crotalaria germplasm for crop improvement
Creators: name: Muli, Joshua Kiilu
name: Neondo, Johnstone O.
name: Kamau, Peter K.
name: Odari, Eddy
name: Budambula, Nancy L. M.
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4: Table S2. Means of quantitative variables of Crotalaria accessions from Kenya.
Does immigration "rescue" populations from extinction?
Creators: name: Clinchy, Michael
Publisher: name: University of British Columbia
Year: 2009

description: I measured the rate of immigration by female common brushtail possums (Trichosurus vulpecula) in response to the removal of resident breeding females, in a landscape with no physical barriers to dispersal. I removed 10 residents from one 36 ha study grid and 9 from another, and monitored immigration over the next two years. Only one immigrant settled in one of the two removal areas. Sixteen breeding females resident on the periphery of the removal areas expanded their ranges into the removal areas. The one immigrant was a subadult that did not give birth in the breeding season following her arrival. Parentage analysis using microsatellite DNA indicated that the immigrant had moved only one home range away from her putative mother's home range (= 200 m). All of the known daughters of resident females settled beside their mothers. Parentage analysis indicated that 39 % of adjacent pairs of resident females were putatively mother and daughter, which is close to the 42 % expected if daughters always settle beside their mothers. The sex ratio of pouch-young was significantly male-biased, as predicted by the 'local resource competition' hypothesis, if most males disperse and most females settle beside their mothers. A deterministic, stage-based model of demography indicated that the birth rate was insufficient to balance the death rate (r = - 0.1), suggesting that the site was a 'dispersal sink'. However, even with immigration, the projection was that density would decline by 84 %. Neither 'old age', starvation, predation or disease could explain 11 of the 24 deaths among resident females. Most of these females demonstrated prior symptoms of stress. Females that were captured and handled more frequently had a significantly lower probability of survival, and the estimated adult survival rate was significantly lower than that expected from the observed age distribution. I suggest apparent 'dispersal sinks' may often be of our own making. Deaths due to capture and handling are analogous to removals. Consequently, since there were evidently more than 19 'removals', I conclude that the results of the experiment likely overestimate the importance of immigration in replacing losses among breeding females.
SU(4)_L X U(1)_X three-family model for the electroweak interaction
Creators: name: Sanchez, Luis A.
name: Wills-Toro, Luis A.
name: Zuluaga, Jorge I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: An extension of the gauge group $SU(2)_L\otimes U(1)_Y$ of the standard model to the symmetry group $SU(4)_L\otimes U(1)_X$ (3-4-1 for short) is presented. The model does not contain exotic electric charges and anomaly cancellation is achieved with a family of quarks transforming differently from the other two, thus leading to FCNC. By introducing a discrete $Z_2$ symmetry we obtain a consistent fermion mass spectrum, and avoid unitarity violation of the CKM mixing matrix arising from the mixing of ordinary and exotic quarks. The neutral currents coupled to all neutral vector bosons are studied, and by using CERN LEP and SLAC Linear Collider data at Z-pole and atomic parity violation data, we bound parameters of the model related to tree-level $Z-Z^\prime$ mixing. These parameters are further constrained by using experimental input from neutral meson mixing in the analysis of sources of FCNC present in the model. Constraints coming from the contribution of exotic particles to the one-loop oblique electroweak parameters $S$, $T$ and $U$ are also briefly discussed. Finally, a comparison is done of the predictions of different classes of 3-4-1 models without exotic electric charges.
description: 26 pages, 6 tables, 1 figure. Accepted for publication in Phys. Rev. D
Exotic Pests and Trade: When Is Pest-Free Status Certification Worthwhile?
Creators: name: Lichtenberg, Erik
name: Lynch, Lori
name: Lichtenberg, Erik
name: Lynch, Lori
Publisher: name: Unknown
Year: 2006
Subjects: subject: International Relations/Trade
subject: exotic pests
subject: invasive species
subject: pest-free area
subject: eradication
subject: sanitary/phytosanitary regulations

description: Pest-free status certification is desirable if the demand-side impacts (increased export revenue) and supply-side impacts (lower pest damage and decreased ongoing control costs) exceed the compliance monitoring and eradication costs. Thus, eradication may be optimal without certification. Certification is more likely for regions facing costly treatment requirements (bans) or possessing geographic traits that lower monitoring costs and infestation probabilities than for those exporting higher-valued products. Certification benefits producers but hurts consumers. Thus, political feasibility may be greater if domestic consumption is a small share of the market and if the additional tax burden of certification programs is light.
Cache-aided General Linear Function Retrieval
Creators: name: Wan, Kai
name: Sun, Hua
name: Ji, Mingyue
name: Tuninetti, Daniela
name: Caire, Giuseppe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Coded Caching, proposed by Maddah-Ali and Niesen (MAN), has the potential to reduce network traffic by pre-storing content in the users' local memories when the network is underutilized and transmitting coded multicast messages that simultaneously benefit many users at once during peak-hour times. This paper considers the linear function retrieval version of the original coded caching setting, where users are interested in retrieving a number of linear combinations of the data points stored at the server, as opposed to a single file. This extends the scope of the Authors' past work that only considered the class of linear functions that operate element-wise over the files. On observing that the existing cache-aided scalar linear function retrieval scheme does not work in the proposed setting, this paper designs a novel coded caching scheme that outperforms uncoded caching schemes that either use unicast transmissions or let each user recover all files in the library.
description: 21 pages, 4 figures, published in Entropy 2021, 23(1), 25
Traffic Controls for Maintenance on High Speed Highways
Creators: name: Seymour, William M.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1972
Subjects: subject: Transportation Engineering

description: Observations were first made at lane closures on interstate highways where yellow warning signs were erected routinely in conjunction with contract work. Later data provided direct comparison between new yellow and new orange signs. One sign scheme was used throughout the study. Driver obedience improved when new signs of either color were used; this finding implies that signs should always be maintained in good condition. Orange signs were slightly more effective than yellow signs in reducing traffic conflicts and merges near the traffic cones. The results of the study tend to support the adoption of orange as the standard color for signing construction and maintenance sites. However, the differences between the two colors were rather small. Driver preference polls supported the orange signs more strongly. A degree of driver insensitivity toward signing was shown. In general, variables such as short sight distances, high volumes, poor condition of signs, and driver insensitivity produced unsafe situations at lane closures.
Photoproduction of Lambda(1520,3/2^-)
Creators: name: Nam, Seung-Il
name: Hosaka, Atsushi
name: Kim, Hyun-Chul
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the photoproduction of Lambda(1520,3/2^-) via the gamma N -> K Lambda^* reaction using the Born approximation and the Rariata-Schwinger vector-spinor field for the spin 3/2 particle. We reproduce the experimental data of the total cross section and the angular dependence for the proton target qualitatively well and estimate them for the neutron target. For the neutron target, we find much smaller total cross section than that of the proton and the significant K^*-exchange contribution.
description: Talk given at the Few-body physics workshop, RCNP, Osaka, Japan, 23-25 December 2004 and printed in a speciall issue of Genshikaku-kenkyu in Japan
Integration-Valuation Nexus in Invasive Species Policy
Creators: name: Shogren, Jason F.
name: Finnoff, David C.
name: McIntosh, Christopher R.
name: Settle, Chad
name: Shogren, Jason F.
name: Finnoff, David C.
name: McIntosh, Christopher R.
name: Settle, Chad
Publisher: name: Unknown
Year: 2006
Subjects: subject: Environmental Economics and Policy
subject: invasive species
subject: integrated economic-ecological modeling
subject: nonmarket valuation

description: This paper reviews recent work examining two topics of economic research vital for invasive species policy-integration and valuation. Integration requires bioeconomic models that blend invasive biology with economic circumstances and the feedback loops between the two systems. Valuation requires nonmarket valuation associated with human and environmental damages posed by invasive species. We argue for a second-level of integration in invasive species economics-valuation based on integration models. Policy prescriptions based on integration models need valuation work; valuation surveys need integration models-the two are complements. Valuation could be enhanced with integration in mind; integration could be made better with valuation in mind. An example from blending the two research areas is presented and its merits demonstrated.
iPROLEPSIS Newsletter No 6
Creators: name: Leipuvienė, Kristina
Publisher: name: Zenodo
Year: 2024
Subjects: Psoriatic arthritis
Digital health
Artificial intelligence
Digital biomarkers
Clinical research

description: We are pleased to share the latest updates from iPROLEPSIS project, a Horizon Europe-funded project developing a novel personalised digital care ecosystem for people with psoriatic arthritis (PsA). Discover project progress and insights in our 6th newsletter edition.

For more information, visit our website: https://www.iprolepsis.eu/
Comparative Evaluation of RAYGO 404 Vibratory Roller
Creators: name: Ross, Jerry D.
name: Southgate, Herbert F.
name: Newberry, Donald C.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1972
Subjects: subject: Transportation Engineering

description: Roller evaluations are rather phenomenological -- that is, one must rely somewhat on observations. Density measurements following each excursion of the compactor may not relate directly to the work done in compressing the layer. When no increase in density is realized, no work is accomplished. Work is defined here in the classical sense. Energy expended without producing an increase in density is wasted. Thereafter, the only way additional classical work can be done on the layer is to reduce density.  The number of excursions necessary to achieve an acceptable or comparable density generally reflects efficiency of the compactor. Much may depend on weight, speed, size of wheels, and modes of operation. When viscous traction (time-dependent resistance to densification) is involved, the dwell time (or dwell time x number of excursions) becomes very significant. Dwell time is proportional to speed; but, in a vibrating mode, bearing stress of the roller wheel varies.
Land Abandonment in an Agricultural Frontier After a Plant Invasion: The Case of Bracken Fern in Southern Yucatan, Mexico
Creators: name: Schneider, Laura
name: Geoghegan, Jacqueline
name: Schneider, Laura
name: Geoghegan, Jacqueline
Publisher: name: Unknown
Year: 2006
Subjects: subject: Land Economics/Use
subject: bracken fern invasion
subject: land abandonment
subject: agricultural household model
subject: Mexico

description: Plant invasions and their impact on land use pose difficult research questions, due to the complex relationships between the ecological nature of the invasion and the human responses to the invasion. This paper focuses on the linkages between an invasion of bracken fern and land use decisions in an agricultural frontier in southern Mexico. Agriculture in this region is practiced on an extensive basis, using traditional slash-and-burn techniques of temporary cultivation and continuous rotation through forest fallow. We investigate the factors that affect the decision of a subsistence farmer to either continue cultivating an invaded agricultural plot or permanently abandon the plot and cultivate elsewhere. We develop an agricultural household model of land use choices, where households maximize utility subject to constraints on land, labor, and income. We subsequently test the hypotheses raised, using data from a small household survey performed in the region in 2002.
Losing the trace to find dynamical Newton or Planck constants
Creators: name: Jiroušek, Pavel
name: Shimada, Keigo
name: Vikman, Alexander
name: Yamaguchi, Masahide
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that promoting the trace part of the Einstein equations to a trivial identity results in the Newton constant being an integration constant. Thus, in this formulation the Newton constant is a global dynamical degree of freedom which is also a subject to quantization and quantum fluctuations. This is similar to what happens to the cosmological constant in the unimodular gravity where the trace part of the Einstein equations is lost in a different way. We introduce a constrained variational formulation of these modified Einstein equations. Then, drawing on analogies with the Henneaux-Teitelboim action for unimodular gravity, we construct different general-covariant actions resulting in these dynamics. The inverse of dynamical Newton constant is canonically conjugated to the Ricci scalar integrated over spacetime. Surprisingly, instead of the dynamical Newton constant one can formulate an equivalent theory with a dynamical Planck constant. Finally, we show that an axion-like field can play a role of the gravitational Newton constant or even of the quantum Planck constant.
description: 13 pages+refs, no figures, updated refs, corrected typos, extended discussion
Bisymmetric functions, Macdonald polynomials and sl_3 basic hypergeometric series
Creators: name: Warnaar, S. Ole
Publisher: name: arXiv
Year: 2005
Subjects: subject: Combinatorics (math.CO)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 05E05, 33D67

description: A new type of sl_3 basic hypergeometric series based on Macdonald polynomials is introduced. Besides a pair of Macdonald polynomials attached to two different sets of variables, a key-ingredient in the sl_3 basic hypergeometric series is a bisymmetric function related to Macdonald's commuting family of q-difference operators, to the sl_3 Selberg integrals of Tarasov and Varchenko, and to alternating sign matrices. Our main result for sl_3 series is a multivariable generalization of the celebrated q-binomial theorem. In the limit this q-binomial sum yields a new sl_3 Selberg integral for Jack polynomials.
description: 33 pages; major revision of earlier, much longer paper; to appear in Compositio Mathematica
Additional file 6 of Phenomic characterization of Crotalaria germplasm for crop improvement
Creators: name: Muli, Joshua Kiilu
name: Neondo, Johnstone O.
name: Kamau, Peter K.
name: Odari, Eddy
name: Budambula, Nancy L. M.
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Figure S1. Sample clustering of 83 Crotalaria accessions from Kenya based on their agro-ecological regions using both quantitative and qualitative characters.
Simulating the U.S. Impacts of Alternative Asian Soybean Rust Treatment Regimes
Creators: name: Johansson, Robert C.
name: Livingston, Michael J.
name: Westra, John V.
name: Guidry, Kurt M.
name: Johansson, Robert C.
name: Livingston, Michael J.
name: Westra, John V.
name: Guidry, Kurt M.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Crop Production/Industries
subject: Asian soybean rust
subject: invasive species
subject: Phakopsora pachyrhizi
subject: preventative and curative fungicides

description: Asian soybean rust (rust) is an emerging issue in U.S. crop production and was identified in nine states during 2004. Recent farm surveys indicate that many producers are adjusting their management practices to the possibility of a rust infestation. The economic and environmental impacts of such adjustments are not known in the medium run given these new developments. We combine 2005 data on the geographical distribution of the fungal pathogen that causes rust with 2005 information on the availability and material costs of fungicides to analyze three treatment strategies. Our results indicate a higher range of economic impacts than previous research has indicated, but are consistent with earlier findings indicating that rust infestations will likely result in reduced soybean production, reduced exports, and higher prices.
Exotic Forest Insects and Residential Property Values
Creators: name: Holmes, Thomas P.
name: Murphy, Elizabeth A.
name: Bell, Kathleen P.
name: Holmes, Thomas P.
name: Murphy, Elizabeth A.
name: Bell, Kathleen P.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Land Economics/Use
subject: invasive species
subject: economic impacts
subject: hedonic property values
subject: general spatial model

description: This paper presents a case study of the economic damages to homeowners in a northern New Jersey community due to an exotic forest insect--the hemlock woolly adelgid. Hedonic property value methods are used to estimate the effect of hemlock health on property values. A statistically significant relationship between hemlock health and residential property values is established. Moreover, there are some signs of spillover impacts from hemlock decline, as negative effects are realized on the parcels where the declining hemlock stands are located as well as on neighboring properties. These results give some indication of the benefits of potential control programs and strategies and also show support for community- or neighborhood-based programs in residential settings.
Curvaton Scenario in the Presence of Two Dilatons Coupled to the Scalar Curvature
Creators: name: Bamba, Kazuharu
name: Yoshimura, Motohiko
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The possibility of the realization of a curvaton scenario is studied in a theory in which two dilatons are introduced along with coupling to the scalar curvature. It is shown that when the two dilatons have an approximate O(2) symmetric coupling, a scalar field playing the role of the curvaton may exist in the framework of this theory without introducing any other scalar field for the curvaton. Thus the curvaton scenario can be realized, and in the simple version of the curvaton scenario, in which the curvaton potential is quadratic, the curvature perturbation with a sufficient amplitude and a nearly scale-invariant spectrum suggested by observations obtained from WMAP can be generated.
description: 45 pages, 5 figures, typos corrected
A Composite Likelihood Approach for Inference under Photometric Redshift Uncertainty
Creators: name: Rau, M. M.
name: Morrison, C. B.
name: Schmidt, S. J.
name: Wilson, S.
name: Mandelbaum, R.
name: Mao, Y. Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Obtaining accurately calibrated redshift distributions of photometric samples is one of the great challenges in photometric surveys like LSST, Euclid, HSC, KiDS, and DES. We present an inference methodology that combines the redshift information from the galaxy photometry with constraints from two-point functions, utilizing cross-correlations with spatially overlapping spectroscopic samples, and illustrate the approach on CosmoDC2 simulations. Our likelihood framework is designed to integrate directly into a typical large-scale structure and weak lensing analysis based on two-point functions. We discuss efficient and accurate inference techniques that allow us to scale the method to the large samples of galaxies to be expected in LSST. We consider statistical challenges like the parametrization of redshift systematics, discuss and evaluate techniques to regularize the sample redshift distributions, and investigate techniques that can help to detect and calibrate sources of systematic error using posterior predictive checks. We evaluate and forecast photometric redshift performance using data from the CosmoDC2 simulations, within which we mimic a DESI-like spectroscopic calibration sample for cross-correlations. Using a combination of spatial cross-correlations and photometry, we show that we can provide calibration of the mean of the sample redshift distribution to an accuracy of at least 0.002(1+z), consistent with the LSST-Y1 science requirements for weak lensing and large-scale structure probes.
description: Updated to match the version accepted by the MNRAS, 23 pages, 9 figures, 2 tables
Forest Product Trade Impacts of an Invasive Species: Modeling Structure and Intervention Trade-Offs
Creators: name: Prestemon, Jeffrey P.
name: Zhu, Shushuai
name: Turner, James A.
name: Buongiorno, Joseph
name: Li, Ruhong
name: Prestemon, Jeffrey P.
name: Zhu, Shushuai
name: Turner, James A.
name: Buongiorno, Joseph
name: Li, Ruhong
Publisher: name: Unknown
Year: 2006
Subjects: subject: Resource /Energy Economics and Policy
subject: Asian gypsy moth
subject: trade
subject: invasive species
subject: welfare
subject: spatial equilibrium model

description: Asian gypsy and nun moth introductions into the United States, possibly arriving on imported Siberian coniferous logs, threaten domestic forests and product markets and could have global market consequences. We simulate, using the Global Forest Products Model (a spatial equilibrium model of the world forest sector), the consequences under current policies of a wide-spread, successful pest invasion, and of plausible trading partner responses to the successful invasion. We find that trade liberalization would have a negligible effect on U.S. imports of Siberian logs and, consequently, on the risk of a pest invasion. But, if it happened, possibly through trade in other commodities, a successful and widespread pest invasion would have large effects on producers and consumers over the period 2002 to 2030.
Zusatzmaterial zum Artikel: Wirkung des Waldes im Transit- und Ablagerungsgebiet von Hangmuren
Creators: name: Dorren, Luuk
name: Moos, Christine
Publisher: name: Zenodo
Year: 2023
Subjects: hillslope debris flow
forest
experiments
past events
modelling

description: Dieses Dokument enthält Zusatzmaterial zum SZF (Schweiz. Zeitschrift f. Forstwesen) Artikel ”Wirkung des Waldes im Transit- und Ablagerungsgebiet von Hangmuren”. Aus Platzgründen nicht im Originalartikel erwähnten Details zu den verwendeten Methoden
und zusätzliche Ergebnisse werden hier präsentiert.

This document contains additional material to the SZF (Schweiz. Zeitschrift f. Forstwesen) article "Wirkung des Waldes im Transit- und Ablagerungsgebiet von Hangmuren". For reasons of space, details of the methods used, which were not mentioned in the original article, and additional results are presented here.
A Dynamic Principal-Agent Model of Human-Mediated Aquatic Species Invasions
Creators: name: MacPherson, Alexander J.
name: Moore, Rebecca
name: Provencher, Bill
name: MacPherson, Alexander J.
name: Moore, Rebecca
name: Provencher, Bill
Publisher: name: Unknown
Year: 2006
Subjects: subject: Resource /Energy Economics and Policy
subject: invasive species
subject: random utility model
subject: Eurasion watermilfoil
subject: dynamic optimiza-tion
subject: principal-agent

description: This paper presents a dynamic principal-agent model of aquatic species invasions in which a manager, concerned about the spread of invasive species across lakes by boaters, sets interseasonal management controls on a lake-by-lake basis, and boaters make a series of intraseasonal trip decisions to maximize random utility during the course of the season, conditional on the controls imposed by the manager. The results of a simulated invasion of Eurasian watermilfoil (Myriophyllum spicatum) highlight interesting aspects of the optimal management policies under two different management objectives: maximizing boater welfare and minimizing milfoil spread.
Additional file 1 of MicroRNA related prognosis biomarkers from high throughput sequencing data of kidney renal clear cell carcinoma
Creators: name: Minjiang Huang
name: Zhang, Ti
name: Yao, Zhi-Yong
name: Chaoqung Xing
name: Qingyi Wu
name: Yuan-Wu Liu
name: Xing, Xiao-Liang
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Marine Biology
subject: Cancer

description: Additional file 1: Supplementary Table S1. GO function enrichment analysis of the DEGs. Supplementary Table 2. KEGG pathway enrichment analysis of the DEGs.
Energy of the Universe in Bianchi-type I Models in Moller's Tetrad Theory of Gravity
Creators: name: Aydogdu, Oktay
name: Salti, Mustafa
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper has been removed by arXiv administrators because it plagiarizes gr-qc/0011027, "Viscous cosmologies in scalar-tensor theories for Kasner type metrics," by M. Cataldo, S. del Campo and P. Salgado.
description: This submission has been withdrawn by arXiv administrators due to inappropriate text reuse from external sources
Additional file 1 of Cardinium symbiosis as a potential confounder of mtDNA based phylogeographic inference in Culicoides imicola (Diptera: Ceratopogonidae), a vector of veterinary viruses
Creators: name: Pilgrim, Jack
name: Siozios, Stefanos
name: Baylis, Matthew
name: Venter, Gert
name: Garros, Claire
name: Hurst, Gregory D. D.
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Primer attributes and PCR conditions.
Colorful points in the XY regime of XXZ quantum magnets
Creators: name: Pal, Santanu
name: Sharma, Prakash
name: Changlani, Hitesh J.
name: Pujari, Sumiran
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the XY regime of the XXZ Heisenberg model phase diagram, we demonstrate that the origin of magnetically ordered phases is influenced by the presence of solvable points with exact quantum coloring ground states featuring a quantum-classical correspondence. Using exact diagonalization and density matrix renormalization group calculations, for both the square and the triangular lattice magnets, we show that the ordered physics of the solvable points in the extreme XY regime, at $\frac{J_z}{J_\perp}=-1$ and $\frac{J_z}{J_\perp}=-\frac{1}{2}$ respectively with $J_\perp > 0$, adiabatically extends to the more isotropic regime $\frac{J_z}{J_\perp} \sim 1$. We highlight the projective structure of the coloring ground states to compute the correlators in fixed magnetization sectors which enables an understanding of the features in the static spin structure factors and correlation ratios. These findings are contrasted with an anisotropic generalization of the celebrated one-dimensional Majumdar-Ghosh model, which is also found to be (ground state) solvable. For this model, both exact dimer and three-coloring ground states exist at $\frac{J_z}{J_\perp}=-\frac{1}{2}$ but only the two dimer ground states survive for any $\frac{J_z}{J_\perp} > -\frac{1}{2}$.
ANALYSIS OF THE IMPORTANCE OF COMMERCE AND MARKETING IN THE SMALL ENTERPRISE SECTOR: THE CASE OF JAMAICA
Creators: name: Sulaimana, Annette
name: Sulaimana, Annette
Publisher: name: Unknown
Year: 1982
Subjects: subject: Marketing
subject: FOS: Economics and business

description: It is difficult to formulate a single definition for "small scale enterprise." Most countries have their own definition, reflecting more or less the stages achieved by each in economic development. However, there are certain basic characteristics of small enterprises in most countries: (1) the capital outlay is relatively small; (2) the operations are relatively less mechanized than those of large scale enterprises; and (3) they are geographically dispersed. Recent concerns for the problem of employment creation and income distribution in less developed countries has sparked an interest in the role of small scale enterprises in the process of economic development. The industrialization policies pursued by most developing countries has led to the use of capital intensive technology by the large scale enterprise sector. This sector has failed to generate significantly high levels of employment in most developing countries. The result has been increasing levels of unemployment especially in urban areas.
The Squeezed OTOC and Cosmology
Creators: name: Haque, S. Shajidul
name: Underwood, Bret
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Exponential growth in the out-of-time-order correlator (OTOC) is an important potential signature of quantum chaos. The OTOC is quite simple to calculate for squeezed states, whose applications are frequently found in quantum optics and cosmology. We find that the OTOC for a generic highly squeezed quantum state is exponentially large, suggesting that highly squeezed states are "primed" for quantum chaos. A quantum generalization of the classical symplectic phase space matrix can be used to extract the quantum Lyapunov spectrum, and we find this better captures the exponential growth of squeezed states for all squeezing angles compared to any single OTOC. By describing cosmological perturbations in the squeezed state language, we are able to apply our calculations of the OTOC to arbitrary expanding and contracting backgrounds with fixed equation of state. We find that only expanding de Sitter backgrounds support an exponentially growing OTOC at late times, with a putative Lyapunov exponent consistent with other calculations. While the late-time behavior of the OTOC for other cosmological backgrounds appears to change depending on the equation of state, we find that the quantum Lyapunov spectrum shows some universal behavior: the OTOC grows proportional to the scale factor for perturbation wavelengths larger than the cosmological Hubble horizon.
description: 20 pages, 5 figures. v2: Minor modifications, references
Virginia Dawson: Existential Quantification in Tiwa: Disjunction and Indefinites
Creators: name: Dawson, Virginia
name: Clem, Emily
name: Dabkowski, Maksymilian
name: Deal, Amy Rose
name: Hyman, Larry M.
name: Jenks, Peter
name: Mikkelsen, Line
name: O'Hagan, Zachary
name: Remirez, Emily
name: Yalcin, Seth
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: lax

description: PhD candidate: Dawson; PhD dissertation committee: Deal (chair), Jenks, Mikkelsen, Yalcin (external member). Other individuals labeled as participants asked questions. The defense was held on Zoom due to COVID-19. There is a single video file that includes the research presentation, questions from the committee, then questions from the audience. One .pdf file consists of slides of the research presentation.
Symbolic computation with finite quandles
Creators: name: Henderson, Richard
name: Macedo, Todd
name: Nelson, Sam
Publisher: name: arXiv
Year: 2005
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M27, 57-04

description: Algorithms are described and Maple implementations are provided for finding all quandles of order $n$, as well as computing all homomorphisms between two finite quandles or from a finitely presented quandle (e.g., a knot quandle) to a finite quandle, computing the automorphism group of a finite quandle, etc. Several of these programs work for arbitrary binary operation tables and hence algebraic structures other than quandles. We also include a stand-alone C program which finds quandles of order $n$ and provide URLs for files containing the results for $n=6,$ 7 and 8.
description: 6 pages. Version 2 includes some updates and corrections. Code has been relocated to www.esotericka.org/quandles. To appear in J. Symbolic Computation