cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum coherence of Hard-Core-Bosons and Fermions : Extended, Glassy and Mott Phases
Creators: name: Rey, Ana Maria
name: Satija, Indubala I.
name: Clark, Charles W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Astrophysics (astro-ph)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: We use Hanbury-Brown-Twiss interferometry (HBTI) to study various quantum phases of hard core bosons (HCBs) and ideal fermions confined in a one-dimensional quasi-periodic (QP) potential. For HCBs, the QP potential induces a cascade of Mott-like band-insulator phases in the extended regime, in addition to the Mott insulator, Bose glass, and superfluid phases. At critical filling factors, the appearance of these insulating phases is heralded by a peak to dip transition in the interferogram, which reflects the fermionic aspect of HCBs. On the other hand, ideal fermions in the extended phase display various complexities of incommensurate structures such as devil's staircases and Arnold tongues. In the localized phase, the HCB and the fermion correlations are identical except for the sign of the peaks. Finally, we demonstrate that HBTI provides an effective method to distinguish Mott and glassy phases.
description: 5 pages, 4 figures
Megalobulimus amandus Simone 2012
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Stylommatophora
Strophocheilidae
Megalobulimus
Megalobulimus amandus

description: amandus, Megalobulimus Simone, 2012
 Megalobulimus amandus Simone, 2012b: 436–438 (figs 22–26).
Gastropoda, Strophocheilidae
 Holotype: MZSP 103917.
 Paratypes (10 spc): MZSP 103918.
 Paratypes (3 spc): MZSP 103919.
 Locality: Brazil, Bahia, Santa Maria da Vitória, ~ 13°24' S, 44°12' W, ~ 460 m altitude (type locality), Jan. 2012.
 Collector: J. Coltro.
 Preservation: Dry.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 6, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
Non-linear Realization of PSU(2,2|4) on the Light-Cone
Creators: name: Ananth, Sudarshan
name: Brink, Lars
name: Kim, Sung-Soo
name: Ramond, Pierre
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The symmetries of the N=4 SuperYang-Mills theory on the light-cone are discussed, solely in terms of its physical degrees of freedom. We derive explicit expressions for the generators of the PSU(2,2|4) superalgebra, both in the free theory, and to all orders in the gauge coupling of the classical theory. We use these symmetries to construct its Hamiltonian, and show that it can be written as a quadratic form of a fermionic superfield.
description: 29 pages, published version, references added, typos correcte
Robust Score Tests With Missing Data in Genomics Studies
Creators: name: Wong, Kin Yau
name: Zeng, Donglin
name: Lin, D. Y.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer

description: Analysis of genomic data is often complicated by the presence of missing values, which may arise due to cost or other reasons. The prevailing approach of single imputation is generally invalid if the imputation model is misspecified. In this article, we propose a robust score statistic based on imputed data for testing the association between a phenotype and a genomic variable with (partially) missing values. We fit a semiparametric regression model for the genomic variable against an arbitrary function of the linear predictor in the phenotype model and impute each missing value by its estimated posterior expectation. We show that the score statistic with such imputed values is asymptotically unbiased under general missing-data mechanisms, even when the imputation model is misspecified. We develop a spline-based method to estimate the semiparametric imputation model and derive the asymptotic distribution of the corresponding score statistic with a consistent variance estimator using sieve approximation theory and empirical process theory. The proposed test is computationally feasible regardless of the number of independent variables in the imputation model. We demonstrate the advantages of the proposed method over existing methods through extensive simulation studies and provide an application to a major cancer genomics study. Supplementary materials for this article are available online.
Baryogenesis from the weak scale to the grand unification scale
Creators: name: Bodeker, Dietrich
name: Buchmuller, Wilfried
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the current status of baryogenesis with emphasis on electroweak baryogenesis and leptogenesis. The first detailed studies were carried out for SU(5) GUT models where CP-violating decays of leptoquarks generate a baryon asymmetry. These GUT models were excluded by the discovery of B+L violating sphaleron processes at high temperatures. Yet a new possibility emerged, electroweak baryogenesis. Here sphaleron processes generate a baryon asymmetry during a strongly first-order phase transition. This mechanism has been studied in many extensions of the Standard Model. However, constraints from the LHC and from low-energy precision experiments exclude most of the known models, leaving composite Higgs models of electroweak symmetry breaking as an interesting possibility. Sphaleron processes are also the basis of leptogenesis, where CP-violating decays of heavy right-handed neutrinos generate a lepton asymmetry which is partially converted to a baryon asymmetry. This mechanism is closely related to the one of GUT baryogenesis, and simple estimates based on GUT models can explain the order of magnitude of the observed baryon-to-photon ratio. In the one-flavour approximation an upper bound on the light neutrino masses has been derived which is consistent with the cosmological upper bound on the sum of neutrino masses. For quasi-degenerate right-handed neutrinos the leptogenesis temperature can be lowered from the GUT scale down to the weak scale, and CP-violating oscillations of GeV sterile neutinos can also lead to successfull leptogenesis. Significant progress has been made in developing a full field theoretical description of thermal leptogenesis, which demonstrated that interactions with gauge bosons of the thermal plasma play a crucial role. Finally, we discuss recent ideas how the seesaw mechanism and B-L breaking at the GUT scale can be probed by gravitational waves.
description: 48 pages, 33 figures, 2 tables; a few more corrections
Compositions
Creators: name: Newsome, Gregory Lee
Publisher: name: University of British Columbia
Year: 2009

description: Seven compositions, five for live instruments and two for electroacoustics, comprise this thesis. The works for live instruments vary in genre, and include pieces for chamber ensemble, choir, and solo instrument. "Music for Solo Violin" employs thematic material modelled after Eastern European folk music and intervallic structures, as does "Bagatelle for String Quartet." "Lux aeterna" expands a small, core idea into an entire composition whose salient features are an added-tone harmonic structure and a time-varying polyphonic texture, "non-art," "The Sacrifice of Infinity," and the electroacoustic works "Chroma" and "Purity" reflect an interest in compositional syntax modelled after timbre, avoidance of a post-World War II concept of gesture, and psychoacoustics.
Density Distribution in Soft Matter Crystals and Quasicrystals
Creators: name: Subramanian, Priya
name: Ratliff, Daniel J.
name: Rucklidge, Alastair M.
name: Archer, Andrew J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The density distribution in solids is often represented as a sum of Gaussian peaks (or similar functions) centred on lattice sites or via a Fourier sum. Here, we argue that representing instead the $\mathit{logarithm}$ of the density distribution via a Fourier sum is better. We show that truncating such a representation after only a few terms can be highly accurate for soft matter crystals. For quasicrystals, this sum does not truncate so easily, nonetheless, representing the density profile in this way is still of great use, enabling us to calculate the phase diagram for a 3-dimensional quasicrystal forming system using an accurate non-local density functional theory.
description: 6 pages, 4 figures, 1 supplementary information PDF, 1 MATLAB program, 1 MAT datafile
Household-Level Livestock Marketing Behavior Among Northern Kenyan and Southern Ethiopian Pastoralists
Creators: name: Bellemare, Marc F.
name: Barrett, Christopher B.
name: Osterloh, Sharon M.
name: Bellemare, Marc F.
name: Barrett, Christopher B.
name: Osterloh, Sharon M.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Marketing
subject: FOS: Economics and business

description: Pastoralists in East Africa's arid and semi-arid lands (ASAL) regularly confront climatic shocks triggering massive herd die-offs and loss of scarce wealth. On the surface, it appears puzzling that pastoralists do not make extensive use of livestock markets to offload animals when climatic shocks temporarily reduce the carrying capacity of local rangelands, and then use markets to restock their herds when local conditions recover. In recent years, donors and policy makers have begun to hypothesize that investments in livestock marketing systems might quickly pay for themselves through reduced demand for relief aid,by increasing pastoralist marketing responsiveness to temporal variation in range conditions.
On Fox spaces and Jacobi identities
Creators: name: Golasinski, Marek
name: Gonçalves, Daciberg
name: Wong, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55Q05, 55Q15, 55Q91

description: In 1945, R. Fox introduced the so-called Fox torus homotopy groups in which the usual homotopy groups are embedded and their Whitehead products are expressed as commutators. A modern treatment of Fox torus homotopy groups and their generalization has been given and studied. In this note, we further explore these groups and their properties. We discuss co-multiplications on Fox spaces and a Jacobi identity for the generalized Whitehead products and the $Γ$-Whitehead products.
description: 16 pages
Resolving by a free action linear category and applications to Hochschild-Mitchell (co)homology
Creators: name: Cibils, Claude
name: Marcos, Eduardo N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: K-Theory and Homology (math.KT)
subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 16E40, 18D20, 16E45

description: Let $G$ be a group acting on a small category $\mathcal C$ over a field $k$, that is $\mathcal C$ is a $G$-$k$-category. We first obtain that $\mathcal C$ is resolvable by a category which is $G$-$k$-equivalent to it, on which $G$ acts freely on objects. This resolvent category enables to show that if the coinvariants and the invariants functors are exact, then the coinvariants and invariants of the Hochschild-Mitchell (co)homology of $\mathcal C$ are isomorphic to the trivial component of the Hochschild-Mitchell (co)ho\-mo\-logy of the skew category $\mathcal C[G]$. Otherwise the corresponding spectral sequence can be settled. If the action of $G$ is free on objects, there is a canonical decomposition of the Hochschild-Mitchell (co)homology of the quotient category $\mathcal C/G$ along the conjugacy classes of $G$. This way we provide a general frame for monomorphisms which have been described previously in low degrees.
description: This version is improved after referee comments. This article differs from a previous article which has been withdrawn. The main point now is the resolving category. In addition, this work contains new results. It has been improved and reorganized. This article supersedes arXiv:1804.02223
Relaxation dynamics and colossal magnetocapacitive effect in CdCr2S4
Creators: name: Lunkenheimer, P.
name: Fichtl, R.
name: Hemberger, J.
name: Tsurkan, V.
name: Loidl, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A thorough investigation of the relaxational dynamics in the recently discovered multiferroic CdCr2S4 showing a colossal magnetocapacitive effect has been performed. Broadband dielectric measurements without and with external magnetic fields up to 10 T provide clear evidence that the observed magnetocapacitive effect stems from enormous changes of the relaxation dynamics induced by the development of magnetic order.
description: 4 pages, 4 figures
Nuclear matter effects on jet production at electron-ion colliders
Creators: name: Li, Hai Tao
name: Vitev, Ivan
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Jet production and jet substructure in reactions with nuclei at future electron-ion colliders will play a preeminent role in the exploration of nuclear structure and the evolution of parton showers in strongly-interacting matter. In the framework of soft-collinear effective theory, generalized to include in-medium interactions, we present the first theoretical study of inclusive jet cross sections and the jet charge at the EIC. Predictions for the modification of these observables in electron-gold relative to electron-proton collisions reveal how the flexible center-of-mass energies and kinematic coverage at this new facility can be used to enhance the signal and maximize the impact of the electron-nucleus program. Importantly, we demonstrate theoretically how to disentangle the effects from nuclear parton distribution functions and the ones that arise from strong final-state interactions between the jet and the nuclear medium.
description: Figures updated, references added, version to appear in PRL
RXTE observations of the dipping low-mass X-ray binary 4U 1624-49
Creators: name: Lommen, Dave
name: van Straaten, Steve
name: van der Klis, Michiel
name: Anthonisse, Brechtje
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse ~ 360 ks of archival data from the Rossi X-Ray Timing Explorer (RXTE) of the 21 hr orbital period dipping low-mass X-ray binary 4U 1624-49. We find that outside the dips the tracks in the colour-colour and hardness-intensity diagrams (CDs and HIDs) are reminiscent of those of atoll sources in the middle and upper parts of the banana branch. The tracks show secular shifts up to ~ 10%. We study the power spectrum of 4U 1624-49 as a function of the position in the CD. This is the first time power spectra of this source are presented. No quasi-periodic oscillations (QPOs) are found. The power spectra are dominated by very low frequency noise (VLFN), characteristic for atoll sources in the banana state, and band limited noise (BLN) which is not reliably detected but may, uncharacteristically, strengthen and increase in frequency with spectral hardness. The VLFN fits to a power law, which becomes steeper when the source moves to the harder part of the CD. We conclude that 4U 1624-49 is an atoll source which in our observations is in the upper banana branch. Combining this with the high (0.5-0.7 L_Edd) luminosity, the long-term flux stability of the source as seen with the RXTE All-Sky Monitor (ASM), and with the fact that it is an X-ray dip source, we conclude that 4U 1624-49 is most likely a GX atoll source such as GX 3+1 and GX 9+9, but seen edge on.
description: 8 pages, 5 figures, 2 tables, accepted for publication in A&A. This version: a few typos corrected
A dissemination strategy for immunizing scale-free networks
Creators: name: Stauffer, Alexandre O.
name: Barbosa, Valmir C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2.2; F.2.2

description: We consider the problem of distributing a vaccine for immunizing a scale-free network against a given virus or worm. We introduce a new method, based on vaccine dissemination, that seems to reflect more accurately what is expected to occur in real-world networks. Also, since the dissemination is performed using only local information, the method can be easily employed in practice. Using a random-graph framework, we analyze our method both mathematically and by means of simulations. We demonstrate its efficacy regarding the trade-off between the expected number of nodes that receive the vaccine and the network's resulting vulnerability to develop an epidemic as the virus or worm attempts to infect one of its nodes. For some scenarios, the new method is seen to render the network practically invulnerable to attacks while requiring only a small fraction of the nodes to receive the vaccine.
Turricostellaria amphissa Simone & Cunha 2012
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Costellariidae
Turricostellaria
Turricostellaria amphissa

description: amphissa, Turricostellaria Simone & Cunha, 2012
 Turricostellaria amphissa Simone & Cunha, 2012: 758–759 (fig. 5A–D).
Gastropoda, Costellariidae
 Paratypes (2 spc): MZSP 102691.
 Locality: Brazil, Espírito Santo, off Itaúnas, Abrolhos Slope, 18°59' S, 37°50' W, MD55 sta. DC 75, 295 m depth, 27 May 1987.
 Collectors: P. Bouchet, J.H. Leal and B. Métivier.
 Preservation: Dry.
 Remarks: Former MNHN, Paris.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 6, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
MAJOR IDEAS IN THE HISTORY OF AGRICULTURAL FINANCE AND FARM MANAGEMENT
Creators: name: Barry, Peter J.
name: Stanton, Bernard F.
name: Barry, Peter J.
name: Stanton, Bernard F.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Agricultural Finance
subject: Agricultural finance
subject: farm management
subject: production economics

description: This paper contains two articles that discuss major ideas from the history of agricultural finance and farm management. The agricultural finance article focuses on ideas that emerged prior to 1960. These ideas are classified into those emerging from action and scientific-framing eras. The second article characterizes the evolution of farm management and production economics from its beginnings in about 1900 to the start of the 21st century. Emphasis is placed on the melding of ideas from agriculturalists and economists.
A NEW LOOK AT THE TRADE VOLUME EFFECTS OF REAL EXCHANGE RATE RISK
Creators: name: Wang, Kai-Li
name: Barrett, Christopher B.
name: Wang, Kai-Li
name: Barrett, Christopher B.
Publisher: name: Unknown
Year: 2002
Subjects: International Relations/Trade

description: This paper takes a new empirical look at the longstanding question of the effect of exchange rate volatility on international trade flows by studying the case of Taiwan's exports to the United States from 1989-1998. In particular, we employ sectoral level, monthly data and a multivariate GARCH-M estimator with corrections for leptokurtic errors that is consistent with the core hypothesis that traders' forward contracting behavior might be affected by exchange rate risk. We find that real exchange rate risk has insignificant effects in most sectors, although agricultural trade volumes appear highly responsive to real exchange rate volatility. These results differ significantly from those obtained using more conventional and restrictive modeling assumptions.
THE ROLE OF CURVATURE IN ESTIMATING ACCURATE DUAL FUNCTIONS
Creators: name: Tauer, Loren W.
name: Tauer, Loren W.
Publisher: name: Unknown
Year: 2001
Subjects: Research Methods/ Statistical Methods

description: A production function highly concave in inputs will have a dual profit function less convex in prices. Even large variations in prices will cause little variation in input usage and output, resulting in poor profit function estimates. This is demonstrated using Monte Carlo simulation with various curvatures and error structures.
[Brev til DKNVS]
Creators: name: Strøm, Henrik Christian
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1818

description: Komiteen til å motta og avlevere VS' samlinger avgir rapport (Johan Chr. Tellefsen og H.S.Arentz)
DECOMPOSING PRODUCER PRICE RISK: A POLICY ANALYSIS TOOL WITH AN APPLICATION TO NORTHERN KENYAN LIVESTOCK MARKETS
Creators: name: Barrett, Christopher B.
name: Luseno, Winnie K.
name: Barrett, Christopher B.
name: Luseno, Winnie K.
Publisher: name: Unknown
Year: 2002
Subjects: Demand and Price Analysis

description: This paper introduces a simple method of price risk decomposition that determines the extent to which producer price risk is attributable to volatile inter-market margins, intra-day variation, intra-week (day of week) variation, or terminal market price variability. We apply the method to livestock markets in northern Kenya, a setting of dramatic price volatility where price stabilization is a live policy issue. In this particular application, we find that large, variable inter-market basis is the most important factor in explaining producer price risk in animals typically traded between markets. Local market conditions explain most price risk in other markets, in which traded animals rarely exit the region. Variability in terminal market prices accounts for relatively little price risk faced by pastoralists in the dry lands of northern Kenya although this is the focus of most present policy prescriptions under discussion. Producer price volatility concerns producers and governments in a wide range of industries and nations. In settings where producers have little or no access to financial markets through which they can effectively hedge against price risk, governments are often keen to find cost-effective means to reduce producer price volatility. Yet such volatility can arise from any of several sources, so identification of effective intervention strategies depends fundamentally on locating the source(s) of variability in producer prices. This paper introduces a simple method of price risk decomposition intended to serve as a policy analysis tool for precisely that purpose. This method determines the extent to which producer price risk is attributable to volatile inter-market margins, intra-day variation, intra-week (day of week) variation, or variability in terminal market price. We apply the method to livestock markets in northern Kenya, a setting of dramatic price volatility where price stabilization is a live policy issue. The remainder of the paper proceeds as follows. Section I introduces our price risk decomposition method. We then demonstrate its utility with an application to livestock markets in the drylands of northern Kenya in a series of three sections. Section II describes the context and some of the current policy debate surrounding livestock price stabilization in Kenya. Section III presents the data and key limitations of this particular sample. The empirical results appear in Section IV along with discussion of these estimates. Section V concludes.
Evolution of the Color-Magnitude Relation in High-Redshift Clusters: Blue Early-Type Galaxies and Red Pairs in RDCS J0910+5422
Creators: name: Mei, S.
name: Blakeslee, J. P.
name: Stanford, S. A.
name: Holden, B. P.
name: Rosati, P.
name: Strazzullo, V.
name: Homeier, N.
name: Postman, M.
name: Franx, M.
name: Rettura, A.
name: Ford, H.
name: Illingworth, G. D.
name: Ettori, S.
name: Bouwens, R. J.
name: Demarco, R.
name: Martel, A. R.
name: Clampin, M.
name: Hartig, G. F.
name: Eisenhardt, P.
name: team, the ACS IDT
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The color-magnitude relation has been determined for the RDCS J0910+5422 cluster of galaxies at redshift z = 1.106. Cluster members were selected from HST ACS images, combined with ground--based near--IR imaging and optical spectroscopy. The observed early--type color--magnitude relation (CMR) in (i_775 -z_850) versus z_850 shows intrinsic scatters in color of 0.042 +/- 0.010 mag and 0.044 +/- 0.020 mag for ellipticals and S0s, respectively. From the scatter about the CMR, a mean luminosity--weighted age t > 3.3 Gyr (z > 3) is derived for the elliptical galaxies. Strikingly, the S0 galaxies in RDCS J0910+5422 are systematically bluer in (i_775 - z_850) by 0.07 +/- 0.02 mag, with respect to the ellipticals. The ellipticity distribution as a function of color indicates that the face-on S0s in this particular cluster have likely been classified as elliptical. Thus, if anything, the offset in color between the elliptical and S0 populations may be even more significant. The color offset between S0 and E corresponds to an age difference of ~1 Gyr, for a single-burst solar metallicity model. A solar metallicity model with an exponential decay in star formation will reproduce the offset for an age of 3.5 Gyr, i.e. the S0s have evolved gradually from star forming progenitors. The early--type population in this cluster appears to be still forming. The blue early-type disk galaxies in RDCS J0910+5422 likely represent the direct progenitors of the more evolved S0s that follow the same red sequence as ellipticals in other clusters. Thirteen red galaxy pairs are observed and the galaxies associated in pairs constitute ~40% of the CMR galaxies in this cluster.
description: ApJ, in press
Bayesian Model Comparison with the Hyvärinen Score: Computation and Consistency
Creators: name: Shao, Stephane
name: E. Jacob, Pierre
name: Ding, Jie
name: Tarokh, Vahid
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Mental Health

description: The Bayes factor is a widely used criterion in model comparison and its logarithm is a difference of out-of-sample predictive scores under the logarithmic scoring rule. However, when some of the candidate models involve vague priors on their parameters, the log-Bayes factor features an arbitrary additive constant that hinders its interpretation. As an alternative, we consider model comparison using the Hyvärinen score. We propose a method to consistently estimate this score for parametric models, using sequential Monte Carlo methods. We show that this score can be estimated for models with tractable likelihoods as well as nonlinear non-Gaussian state-space models with intractable likelihoods. We prove the asymptotic consistency of this new model selection criterion under strong regularity assumptions in the case of nonnested models, and we provide qualitative insights for the nested case. We also use existing characterizations of proper scoring rules on discrete spaces to extend the Hyvärinen score to discrete observations. Our numerical illustrations include Lévy-driven stochastic volatility models and diffusion models for population dynamics. Supplementary materials for this article are available online.
Bullata analuciae de Souza & Coovert 2001
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Marginellidae
Bullata
Bullata analuciae

description: analuciae, Bullata Souza & Coovert, 2001
 Bullata analuciae de Souza & Coovert, 2001: 5–6 (figs 2, 8, 11).
Gastropoda, Marginellidae
 Paratype: MZSP 28243 (Fig. 5 G–H).
 Locality: Brazil, Espírito Santo, Vitória, 20º20' S, 40º00' W, 60–70 m depth (type locality), Apr. 1996. Collector: Shrimp fishing boat.
 Preservation: Dry.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 6, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
Hamilton's equations for a fluid membrane: axial symmetry
Creators: name: Capovilla, Riccardo
name: Guven, Jemal
name: Rojas, Efrain
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Consider a homogenous fluid membrane, or vesicle, described by the Helfrich-Canham energy, quadratic in the mean curvature. When the membrane is axially symmetric, this energy can be viewed as an `action' describing the motion of a particle; the contours of equilibrium geometries are identified with particle trajectories. A novel Hamiltonian formulation of the problem is presented which exhibits the following two features: {\it (i)} the second derivatives appearing in the action through the mean curvature are accommodated in a natural phase space; {\it (ii)} the intrinsic freedom associated with the choice of evolution parameter along the contour is preserved. As a result, the phase space involves momenta conjugate not only to the particle position but also to its velocity, and there are constraints on the phase space variables. This formulation provides the groundwork for a field theoretical generalization to arbitrary configurations, with the particle replaced by a loop in space.
description: 11 pages
Memory in 3D cyclically driven granular material
Creators: name: Benson, Zackery A.
name: Peshkov, Anton
name: Richardson, Derek C.
name: Losert, Wolfgang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We perform experimental and numerical studies of a granular system under cyclic-compression to investigate reversibility and memory effects. We focus on the quasi-static forcing of dense systems, which is most relevant to a wide range of geophysical, industrial, and astrophysical problems. We find that soft-sphere simulations with proper stiffness and friction quantitatively reproduce both the translational and rotational displacements of the grains. We then utilize these simulations to demonstrate that such systems are capable of storing the history of previous compressions. While both mean translational and rotational displacements encode such memory, the response is fundamentally different for translations compared to rotations. For translational displacements, this memory of prior forcing depends on the coefficient of static inter-particle friction, but rotational memory is not altered by the level of friction.
FarmTest: Factor-Adjusted Robust Multiple Testing With Approximate False Discovery Control
Creators: name: Fan, Jianqing
name: Ke, Yuan
name: Sun, Qiang
name: Zhou, Wen-Xin
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy
subject: Computational Biology

description: Large-scale multiple testing with correlated and heavy-tailed data arises in a wide range of research areas from genomics, medical imaging to finance. Conventional methods for estimating the false discovery proportion (FDP) often ignore the effect of heavy-tailedness and the dependence structure among test statistics, and thus may lead to inefficient or even inconsistent estimation. Also, the commonly imposed joint normality assumption is arguably too stringent for many applications. To address these challenges, in this article we propose a factor-adjusted robust multiple testing (FarmTest) procedure for large-scale simultaneous inference with control of the FDP. We demonstrate that robust factor adjustments are extremely important in both controlling the FDP and improving the power. We identify general conditions under which the proposed method produces consistent estimate of the FDP. As a byproduct that is of independent interest, we establish an exponential-type deviation inequality for a robust U-type covariance estimator under the spectral norm. Extensive numerical experiments demonstrate the advantage of the proposed method over several state-of-the-art methods especially when the data are generated from heavy-tailed distributions. The proposed procedures are implemented in the R-package FarmTest. Supplementary materials for this article are available online.
ON IMPROVING ECONOMETRIC ANALYSES OF GENERIC ADVERTISING IMPACTS
Creators: name: Tomek, William G.
name: Kaiser, Harry M.
name: Tomek, William G.
name: Kaiser, Harry M.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Marketing
subject: FOS: Economics and business

description: It is possible to obtain robust estimates of structural parameters using observational data, but it is difficult to do so. Necessary, but not sufficient, conditions are to adopt a modeling philosophy and to undertake a comprehensive evaluation of the results. Using a general-to-specific modeling philosophy, we obtained stable estimates of the long-run advertising elasticity for fluid milk. This result contrasts with an earlier, published model which did not provide stable estimates as new data points became available. It is difficult, however, to apply the general-to-specific modeling approach because it requires the researcher to specify an initial general model. But analysts are unlikely to agree on this initial model, and if this is true, then the "generality" of the model is in question. Moreover, it is a fact that the quality of the available data is sometimes insufficient to obtain the desired stable estimates.
Polycyclic Aromatic Hydrocarbons in Seyfert and star-forming galaxies
Creators: name: García-Bernete, I.
name: Rigopoulou, D.
name: Alonso-Herrero, A.
name: Pereira-Santaella, M.
name: Roche, P. F.
name: Kerkeni, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Polycyclic Aromatic Hydrocarbons (PAHs) are carbon-based molecules resulting from the union of aromatic rings and related species, which are likely responsible for strong infrared emission features (3.3, 6.2, 7.7, 8.6, 11.3 and 12.7 microns). In this work, using a sample of 50 Seyfert galaxies (DL<100 Mpc) we compare the circumnuclear (inner kpc) PAH emission of AGN to that of a control sample of star-forming galaxies (22 luminous infrared galaxies and 30 HII galaxies), and investigate the differences between central and extended PAH emission. Using Spitzer/InfraRed Spectrograph spectral data of Seyfert and star-forming galaxies and newly developed PAH diagnostic model grids, derived from theoretical spectra, we compare the predicted and observed PAH ratios. We find that star-forming galaxies and AGN-dominated systems are located in different regions of the PAH diagnostic diagrams. This suggests that not only are the size and charge of the PAH molecules different, but also the nature and hardness of the radiation field that excite them. We find tentative evidence that PAH ratios in AGN-dominated systems are consistent with emission from larger PAH molecules (Nc>300-400) as well as neutral species. By subtracting the spectrum of the central source from the total, we compare the PAH emission in the central vs extended region of a small sample of AGN. In contrast to the findings for the central regions of AGN-dominated systems, the PAH ratios measured in the extended regions of both type 1 and type 2 Seyfert galaxies can be explained assuming similar PAH molecular size distribution and ionized fractions of molecules to those seen in central regions of star-forming galaxies (100
description: 29 pages, 21 figures, 6 tables, MNRAS, accepted 2021 October 22
Eurytellina angrensis Marques & Simone 2014
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Bivalvia
Veneroida
Tellinidae
Eurytellina
Eurytellina angrensis

description: angrensis, Eurytellina Marques & Simone, 2014
 Eurytellina angrensis Marques & Simone, 2014: 40–46 (figs 1–35).
Bivalvia, Tellinidae
 Holotype: MZSP 21720.
 Paratype 1: MZSP 41519.
 Paratype 2: MZSP 58933.
 Paratype 3: MZSP 84044.
 Paratype 4: MZSP 108179.
 Paratype 5: MZSP 108182.
 Localities: Brazil, Rio de Janeiro, Ilha Grande Bay, along the coast of Angra dos Reis, 23°06'S, 44°36'W; 1) São Paulo, Pedras Miúdas Beach, 23°49'49.2'' S, 45°23'13.6'' W; 2) São Sebastião, Araçá Beach; 3) Ilhabela, Barreiro Beach, 23°48'57.65'' S, 45°22'19.34'' W; 4) Santa Catarina, Porto Belo; 5) Rio de Janeiro state, Angra dos Reis, Enseada das Palmas, Ilha Grande City.
 Preservation: holotype 70% ethanol; paratypes are preserved dry.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on pages 6-7, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
The chemical composition of metal-poor emission-line galaxies in the Data Release 3 of the Sloan Digital Sky Survey
Creators: name: Izotov, Y. I.
name: Stasinska, G.
name: Meynet, G.
name: Guseva, N. G.
name: Thuan, T. X.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have re-evaluated empirical expressions for the abundance determination of N, O, Ne, S, Cl, Ar and Fe taking into account the latest atomic data and constructing an appropriate grid of photoionization models with state-of-the art model atmospheres. Using these expressions we have derived heavy element abundances in the $\sim$ 310 emission-line galaxies from the Data Release 3 of the Sloan Digital Sky Survey (SDSS)with an observed Hbeta flux F(Hbeta)> 1E-14 erg s^{-1} cm^{-2} and for which the [O III] 4363 emission line was detected at least at a 2sigma level, allowing abundance determination by direct methods. The oxygen abundance 12 + log O/H of the SDSS galaxies lies in the range from ~ 7.1 (Zsun/30) to 8.5 (0.7 Zsun). The SDSS sample is merged with a sample of 109 blue compact dwarf (BCD) galaxies with high quality spectra, which contains extremely low-metallicity objects. We use the merged sample to study the abundance patterns of low-metallicity emission-line galaxies. We find that extremely metal-poor galaxies (12 + log O/H < 7.6, i.e. Z < Zsun/12) are rare in the SDSS sample. The alpha element-to-oxygen abundance ratios do not show any significant trends with oxygen abundance, in agreement with previous studies, except for a slight increase of Ne/O with increasing metallicity, which we interpret as due to a moderate depletion of O onto grains in the most metal-rich galaxies. The Fe/O abundance ratio is smaller than the solar value, by up to 1 dex at the high metallicity end. (abridged)
description: 17 pages, 12 figures. Accepted for publication in the Astronomy and Astrophysics
DOES FOOD AID STABILIZE FOOD AVAILABILITY?
Creators: name: Barrett, Christopher B.
name: Barrett, Christopher B.
Publisher: name: Unknown
Year: 1999
Subjects: Food Security and Poverty

description: This paper explores the empirical relationship between U.S. food aid flows per capita and nonconcessional food availability per capita in PL 480 recipient economies. The evidence suggests PL 480, while modestly progressive in its distribution, is if anything procyclical in recipient economies. Food aid fails to stabilize food availability. Both increased domestic food production - i.e., agricultural development - and commercial trade appear more effective than food aid in advancing food security objectives through the stabilization of food availability per capita in low-income economies.
Semiclassical ultraextremal horizons
Creators: name: Matyjasek, Jerzy
name: Zaslavskii, O. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine backreaction of quantum massive fields on multiply-degenerate (ultraextremal) horizons. It is shown that, under influence of the quantum backreaction, the horizon of such a kind moves to a new position, near which the metric does not change its asymptotics, so the ultraextremal black holes and cosmological spacetimes do exist as self-consistent solutions of the semiclassical field equations.
description: References added
Quantum-controlled cluster states
Creators: name: Barros, R. F.
name: Alves, G. B.
name: Pfister, O.
name: Khoury, A. Z.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Quantum optical cluster states have been increasingly explored, in the light of their importance for measurement-based quantum computing. Here we set forth a new method for generating quantum controlled cluster states: pumping an optical parametric oscillator with spatially structured light. We show that state-of-the-art techniques for producing clusters in the spectral and temporal domains are improved by a structured light pump, which manipulates the spatial mode couplings in the parametric interaction. We illustrate the method considering a second-order pump structure, and show that a simple mode rotation yields different cluster states, including, but not limited to the two-dimensional square and hexagonal lattices. We also introduce a novel technique for generating non-uniform cluster states, and propose a simple setup for its implementation.
description: 9 pages, 7 figures
Agricultural Policy Reform and Industry Adjustment in Australia and New Zealand
Creators: name: Harris, David N.
name: Rae, Allan N.
name: Harris, David N.
name: Rae, Allan N.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Agricultural and Food Policy
subject: agricultural adjustment
subject: policy reform
subject: Australia
subject: New Zealand

description: Some sectors of Australian and New Zealand farming have been heavily assisted in the past. New Zealand underwent an economy-wide deregulation in the mid-to-late 980s that included abrupt removal of practically all agricultural assistance. Policy reform in Australia has been more gradual and is industry focused, but in some cases substantial industry assistance has been withdrawn. Deregulation of the Australian dairy industry, and that of the sheep and beef sector in New Zealand, are discussed as case studies of these deregulations. Conclusions are drawn from these experiences, a major one being that previously-assisted farmers can successfully make the transition to market-driven agriculture.
FarmTest: Factor-adjusted robust multiple testing with approximate false discovery control*
Creators: name: Fan, Jianqing
name: Ke, Yuan
name: Sun, Qiang
name: Zhou, Wen-Xin
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Large-scale multiple testing with correlated and heavy-tailed data arises in a wide range of research areas from genomics, medical imaging to finance. Conventional methods for estimating the false discovery proportion (FDP) often ignore the effect of heavy-tailedness and the dependence structure among test statistics, and thus may lead to inefficient or even inconsistent estimation. Also, the commonly imposed joint normality assumption is arguably too stringent for many applications. To address these challenges, in this paper we propose a Factor-Adjusted Robust Multiple Testing (FarmTest) procedure for large-scale simultaneous inference with control of the false discovery proportion. We demonstrate that robust factor adjustments are extremely important in both controlling the FDP and improving the power. We identify general conditions under which the proposed method produces consistent estimate of the FDP. As a byproduct that is of independent interest, we establish an exponential-type deviation inequality for a robust U-type covariance estimator under the spectral norm. Extensive numerical experiments demonstrate the advantage of the proposed method over several state-of-the-art methods especially when the data are generated from heavy-tailed distributions. The proposed procedures are implemented in the R-package FarmTest.
Righting history : remembrance and commemoration at Battle Rock
Creators: name: Nading, Linda L.
Publisher: name: University of British Columbia
Year: 2009

description: Changes to commemorative signage in Port Orford, Oregon, United States, during 1998 and 1999 represent an emerging public acknowledgement of the removal by force of most of the indigenous peoples of Southwestern Oregon in the 1850s. A wide range of participants, including local area residents and nonresident members of Native American First Nations, negotiated changes to signage within a context of controversy. Hegemonic social memory institutionalized as local history and publicly displayed as text on a historical marker was challenged by an alternate version of the event commemorated: a conflict between Athapaskans and Euro- Americans in 1851 at the site now know as "Battle Rock." The alternate version is supported by oral tradition which is marginalized as a source of knowledge about the past while the official history has been privileged by repetitious inscription and incorporated commemorative ritual. Discussion includes the selectivity of public history and the creation of public memory through commemorative activity in which official and vernacular interests compete. A parallel is drawn between the remembrance and acknowledgement of events once suppressed and the remembrance and acknowledgement of marginalized indigenous American First Nations "forgotten" by the United States federal government. The Confederated Tribes of the Lower Rogue, building support for legislative acknowledgement of their tribal status, contributed positively to the production of signage text, an activity which enhanced both their visibility and the visibility and remembrance of their Athapaskan forebears.