cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The not so simple stellar system Omega Cen. II. Evidence in support of a merging scenario
Creators: name: Calamida, Annalisa
name: Zocchi, Alice
name: Bono, Giuseppe
name: Ferraro, Ivan
name: Mastrobuono-Battisti, Alessandra
name: Saha, Abhijit
name: Iannicola, Giacinto
name: Rest, Armin
name: Strampelli, Giovanni
name: Zenteno, Alfredo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present multi-band photometry covering $\sim$ 5°$\times$ 5°across $ω$ Cen collected with the Dark Energy Camera, combined to Hubble Space Telescope and Wide Field Imager data for the central regions. The unprecedented photometric accuracy and field coverage allowed us to confirm the different spatial distribution of blue and red main-sequence stars, and of red-giant branch (RGB) stars with different metallicities. The ratio of the number of blue to red main-sequence stars shows that the blue main-sequence sub-population has a more extended spatial distribution compared to the red main-sequence one, and the frequency of blue main-sequence stars increases at a distance of $\sim$ 20 arcmin from $ω$ Cen center. Similarly, the more metal-rich RGB stars show a more extended spatial distribution compared to the more metal-poor ones in the outskirts of the cluster. Moreover, the centers of the distributions of metal-rich and metal-poor RGB stars are shifted in different directions with respect to the geometrical center of $ω$ Cen. We constructed stellar density profiles for the blue and red main-sequence stars; they confirm that the blue main-sequence sub-population has a more extended spatial distribution compared to the red main-sequence one in the outskirts of $ω$ Cen, as found based on the star number ratio. We also computed the ellipticity profile of $ω$ Cen, which has a maximum value of 0.16 at a distance of $\sim$ 8 arcmin from the center, and a minimum of 0.05 at $\sim$ 30 arcmin; the average ellipticity is $\sim0.10$. The circumstantial evidence presented in this work suggests a merging scenario for the formation of the peculiar stellar system $ω$ Cen.
description: 24 pages, 17 figures, accepted for publication in The Astrophysical Journal
Manuscrito.pdf
Creators: name: Viaro, Renata
name: Gianfranciesco Vicentini
name: Bentes, Flavio
Publisher: name: figshare
Year: 2020
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: A preocupação com o uso adequado de máquinas e equipamentos é uma constante diante da busca na excelência em produção e eficiência corporativas. Ambientes produtivos com máquinas e equipamentos seguros requerem uma legislação que se preocupe com o trabalhador e que contemple as necessidades oriundas de um processo produtivo dinâmico, onde as mudanças são contínuas e as exigências são cada vez maiores, em decorrência da competitividade. O trabalho apresenta a evolução do padrão regulatório do Brasil (NR 12), demonstrando a importância do código de prática da Organização Internacional do Trabalho (2013) e aponta sobre o impacto da evolução dessas exigências no ambiente de trabalho.
Climate action partnership : contribution of food greenhouse gas emissions reductions : moving UBC beyond climate neutral
Creators: name: Ankerson, Collin
name: Chiang, Paul
name: Chien, Jolinca
name: Chin, Sarah
name: Chiu, Alex
name: Chiu, Chris
name: Chiu, Cindy
Publisher: name: The University of British Columbia
Year: 2014

description: This report was conducted as part of the UBC Food Systems Project to observe the effects of increasing food production at the University of British Columbia (UBC) and the effects it will have on greenhouse gas (GHG) emissions. The majority of foods served on campus originate from an external source. This study attempts to quantify the GHG emissions from the transportation of the food to campus and to estimate the reduction in GHG emissions by growing the same crops in UBC as an alternative. Using potatoes as a sample crop and estimating a harvest of 0.378 tons of potatoes on a 600m2 plot similar to the Land and Food Systems (LFS) Orchard Garden, 0.019 tons of Carbon Dioxide (CO₂) emissions can be saved. This sample calculation, however, examines potatoes which are grown fairly locally and uses a small plot of land contributing to a fraction of the food consumed by inhabitants of UBC. By replacing potatoes with another crop purchased from a more distant source or by increasing the yield of the crop, the amount of GHG savings can be increased. Initiatives on campus such as the LFS Orchard Garden have shown that food production is feasible not only on the UBC Farm. Increasing food production at feasible sites and replacing them with imported food will decrease GHG emissions associated with food procurement. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Variable-range hopping in 2D quasi-1D electronic systems
Creators: name: Teber, Sofian
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A semi-phenomenological theory of variable-range hopping (VRH) is developed for two-dimensional (2D) quasi-one-dimensional (quasi-1D) systems such as arrays of quantum wires in the Wigner crystal regime. The theory follows the phenomenology of Efros, Mott and Shklovskii allied with microscopic arguments. We first derive the Coulomb gap in the single-particle density of states, $g(ε)$, where $ε$ is the energy of the charge excitation. We then derive the main exponential dependence of the electron conductivity in the linear (L), {\it i.e.} $σ(T) \sim \exp[-(T_L/T)^{γ_L}]$, and current in the non-linear (NL), {\it i.e.} $j({\mathcal E}) \sim \exp[-({\mathcal E}_{NL} / \mathcal{E})^{γ_{NL}}]$, response regimes (${\mathcal E}$ is the applied electric field). Due to the strong anisotropy of the system and its peculiar dielectric properties we show that unusual, with respect to known results, Coulomb gaps open followed by unusual VRH laws, {\it i.e.} with respect to the disorder-dependence of $T_L$ and ${\mathcal E}_{NL}$ and the values of $γ_L$ and $γ_{NL}$.
description: (v2) Entirely re-written (some notations changed, new presentation and new structure). Part on the Wigner crystal taken off for short. Minor changes in results. 16 RevTex4 pages, 5 figures. (v3) Published version
Vežba 2: Merni most za merenje temperature
Creators: name: Jovanović, Nebojša
name: Miljković, Nadica
Publisher: name: Zenodo
Year: 2021
Subjects: Arduino
LabVIEW
electrical measurement
bridge circuit
thermistor
temperature

description: Zadaci sa kodovima za drugu laboratorijsku vežbu za predmet Kliničko inženjerstvo na Elektrotehničkom fakultetu Univerziteta u Beogradu.
description: Ovaj repozitorijum sadrži i primer Arduino koda koji studentkinje i studenti mogu koristiti kao polaznu osnovu za izradu laboratorijske vežbe.
Reliable Photometric Membership (RPM) of Galaxies in Clusters. I. A Machine Learning Method and its Performance in the Local Universe
Creators: name: Lopes, P. A. A.
name: Ribeiro, A. L. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We introduce a new method to determine galaxy cluster membership based solely on photometric properties. We adopt a machine learning approach to recover a cluster membership probability from galaxy photometric parameters and finally derive a membership classification. After testing several machine learning techniques (such as Stochastic Gradient Boosting, Model Averaged Neural Network and k-Nearest Neighbors), we found the Support Vector Machine (SVM) algorithm to perform better when applied to our data. Our training and validation data are from the Sloan Digital Sky Survey (SDSS) main sample. Hence, to be complete to $M_r^* + 3$ we limit our work to 30 clusters with $z_{\text{phot-cl}} \le 0.045$. Masses ($M_{200}$) are larger than $\sim 0.6\times10^{14} M_{\odot}$ (most above $3\times10^{14} M_{\odot}$). Our results are derived taking in account all galaxies in the line of sight of each cluster, with no photometric redshift cuts or background corrections. Our method is non-parametric, making no assumptions on the number density or luminosity profiles of galaxies in clusters. Our approach delivers extremely accurate results (completeness, C $\sim 92\%$ and purity, P $\sim 87\%$) within R$_{200}$, so that we named our code {\bf RPM}. We discuss possible dependencies on magnitude, colour and cluster mass. Finally, we present some applications of our method, stressing its impact to galaxy evolution and cosmological studies based on future large scale surveys, such as eROSITA, EUCLID and LSST.
description: 14 pages, 14 figures, Accepted to MNRAS
A simple necessary decoherence condition for a set of histories
Creators: name: Scherer, Artur
name: Soklakov, Andrei N.
name: Schack, Ruediger
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Within the decoherent histories formulation of quantum mechanics, we investigate necessary conditions for decoherence of arbitrarily long histories. We prove that fine-grained histories of arbitrary length decohere for all classical initial states if and only if the unitary evolution preserves classicality of states (using a natural formal definition of classicality). We give a counterexample showing that this equivalence does not hold for coarse-grained histories.
description: 11 pages,LaTex
Business models of an AI marketplace for energy systems with focus on demand response
Creators: name: Barahona Garzon, Braulio
Publisher: name: Zenodo
Year: 2024
Subjects: Smart services canvas
Product-service systems
Demand response
AI markets

description: Decarbonisation of our energy consumption leverages on digitalisation. Making energy demand flexible is a key feature of future sustainable energy systems. In this work, three marketplace archetypes of increasing complexity are conceptualised with business models for services that support the implementation of energy demand response programs.
description: + ID der Publikation: hslu_100866 + Art des Beitrages: Präsentation Konferenzpapier/Tagungsbeitrag + Veranstalter: Data Innovation Alliance—Expert Group Smart Services + Sprache: Englisch + Letzte Aktualisierung: 2024-10-16 11:46:39
Dirocoremia simplicipes
Creators: name: Clarke, Robin
name: Zamalloa, Sonia
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Dirocoremia
Dirocoremia simplicipes

description: Dirocoremia simplicipes (Gounelle, 1911)
 Dept. Santa Cruz. 19°00′S / 63°14′W, 680 m, 20 km S Abapo: on/flying to flowers of “Tinajero A”, 7 males and 2 females, 17.XII.2007 (RCSZ).
 Dept. Chuquisaca. 20°36′S / 63°17′W, 750 m, 21 km N Machereti: on/flying to flowers of “Tinajero A”, female, 10.XII.2007 (RCSZ).
 Dept. Tarija. 21°01′S / 63°18′W, 600 m, 30 km N of Villamontes, 4 km E of Camatindi, Semi-dry Chaco Forest: on/flying to flowers of “Tinajero A”, 2 males and 2 females, 11.12.2007 (MNKM). 21°18′S / 63°30′W, 500 m, 7 km W of Villamontes: on/flying to flowers of “Tinajero A”, male, 5.I.2008 (RCSZ). 21°21′S / 63°12′W, 400 m, 34 km E Villamontes, Lomas El Quince, semi-dry Chaco Forest: on/flying to flowers of “Tinajero A”, 2 males, 12.XII.2007 (RCSZ). 21°42′S / 63°36′W, 762 m, 48 km N Yacuiba, 3–5 km Sanandita Road: on/flying to flowers of “Tinajero A”, male and female in coitus, 8.I.2010 (RCSZ).
description: Published as part of Clarke, Robin & Zamalloa, Sonia, 2018, Bolivian anthophilous Cerambycinae (Coleoptera: Cerambycidae) host flower records, pp. 1-35 in Insecta Mundi 2018 (640) on page 21, DOI: 10.5281/zenodo.4645968
Tmpact of Wheat Harvest Timeliness on· Rh"k Efficiency of Double-Cropped Soybeans
Creators: name: Parsch, Lucas D.
name: Trice, Kalven L.
name: Cochran, Mark J.
name: Scott, H. Don
name: Parsch, Lucas D.
name: Trice, Kalven L.
name: Cochran, Mark J.
name: Scott, H. Don
Publisher: name: Unknown
Year: 1987
Subjects: subject: Crop Production/Industries
subject: Risk and Uncertainty
subject: simulation
subject: risk
subject: stochastic dominance
subject: wheat
subject: soybeans

description: Two biophysical crop growth models are interfaced to simulate the performance of double-cropped wheat and soybeans over 20 weather scenarios. The impact of wheat harvest timeliness on net returns is assessed for seven alternative management strategies. Risk efficient strategies are identified for six risk intervals using generalized stochastic dominance.
Electronic structure and optical properties of metallic nanoshells
Creators: name: Nordlander, P.
name: Prodan, E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The electronic structure and optical properties of metallic nanoshells are investigated using a jellium model and the Time Dependent Local Density Approximation (TDLDA). An efficient numerical implementation enables applications to nanoshells of realistic size with up to a million electrons. We demonstrate how a frequency dependent background polarizability of the jellium shell can be included in the TDLDA formalism. The energies of the plasmon resonances are calculated for nanoshells of different sizes and with different dielectric cores, dielectric embedding media, and dielectric shell backgrounds. The plasmon energies are found to be in good agreement with the results from classical Mie scattering theory using a Drude dielectric function. A comparison with experimental data shows excellent agreement between theory and the measured frequency dependent absorption spectra.
Combining SchNet and SHARC: The SchNarc machine learning approach for excited-state dynamics
Creators: name: Westermayr, Julia
name: Gastegger, Michael
name: Marquetand, Philipp
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In recent years, deep learning has become a part of our everyday life and is revolutionizing quantum chemistry as well. In this work, we show how deep learning can be used to advance the research field of photochemistry by learning all important properties for photodynamics simulations. The properties are multiple energies, forces, nonadiabatic couplings and spin-orbit couplings. The nonadiabatic couplings are learned in a phase-free manner as derivatives of a virtually constructed property by the deep learning model, which guarantees rotational covariance. Additionally, an approximation for nonadiabatic couplings is introduced, based on the potentials, their gradients and Hessians. As deep-learning method, we employ SchNet extended for multiple electronic states. In combination with the molecular dynamics program SHARC, our approach termed SchNarc is tested on a model system and two realistic polyatomic molecules and paves the way towards efficient photodynamics simulations of complex systems.
Center Vortex Model for SU(3) Yang-Mills Theory
Creators: name: Quandt, Markus
name: Reinhardt, Hugo
name: Engelhardt, Michael
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The center vortex model for the infrared sector of SU(3) Yang-Mills theory is reviewed. After discussing the physical foundations underlying the model, some technical aspects of its realisation are discussed. The confining properties of the model are presented in some detail and compared to known results from full lattice Yang-Mills theory. Particular emphasis is put on the new phenomenon of vortex branching, which is instrumental in establishing first order behaviour of the SU(3) phase transition. Finally, the vortex free energy is verified to furnish an order parameter for the deconfinement phase transition. It is shown to exhibit a weak discontinuity at the critical temperature, in agreement with predictions from lattice gauge theory.
description: 6 pages, 10 eps-figures, talk presented by M.Q. at 23rd International Symposium on Lattice Field Theory: Lattice 2005, Trinity College, Dublin, Ireland, 25-30 Jul 2005
title: Afterlives
title: On the Art Periodical’s Return through Anthologies and Special Issues
titleType: Subtitle
Creators: name: Salvaneschi, Camilla
Publisher: name: Instituto de História da Arte, Faculdade de Ciências Sociais e Humanas da Universidade NOVA de Lisboa
Year: 2023

description: It is common practice in art periodical publishing to retrace one’s steps, to rethink trajectories, to revise the impact the periodical has had on art, art history, and criticism. Occasionally, going back relates to a mere sense of accomplishment: a celebration offered against the ephemeral and precarious nature of the art periodical. At other times, it has to do with memory, with the untangling of topical stories and a reminder of their influence on the contemporary art field. Ultimately, reflecting on the past is often intertwined with considerations of the future, legacy, immortality, and the enduring impact one leaves behind. Reading the anthologies and anniversary issues published by two contemporary art periodicals –October, Afterall – alongside those of Artforum, e-flux and The Exhibitionist, the article aims to understand the ways through which periodicals develop their own legacy and review their hegemonic position in Western art histories to produce more inclusive narrations.
description: Salvaneschi, C. (2023). Afterlives: On the Art Periodical’s Return through Anthologies and Special Issues. Revista de História da Arte, 16, 10-37. ISSN: 2182-3294
Ensemble Evolutionary Studies of White Dwarfs in Open Star Clusters
Creators: name: Williams, Kurtis A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: White dwarfs (WDs) in open star clusters are a highly useful ensemble of stars. While numerous researchers use open cluster WDs to study the initial-final mass relation, numerous other evolutionary studies are also enabled by this sample of stars, including searches for stochastic mass loss, studies of binary star evolution, and measurements of metallicity impacts on WD formation and evolution. However, it is crucial to use astrometric data such as proper motions to remove contaminating field WDs from open cluster samples; multi-epoch ground based imaging is needed for most open cluster WDs. Also, the strongly correlated errors in the initial mass - final mass plane must be considered; we illustrate the importance of this consideration using a large open cluster WD sample and Monte Carlo techniques.
description: 5 pages, 2 figures. Accepted to appear in the proceedings of IAU Symposium 357: White dwarfs as probes of fundamental physics and tracers of planetary, stellar, & galactic evolution. Modified slightly from the original IAUS submission to fix most egregious typographical errors
Predicting new superconductors and their critical temperatures using unsupervised machine learning
Creators: name: Roter, B.
name: Dordevic, S. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We used the superconductors in the SuperCon database to construct element vectors and then perform unsupervised learning of their critical temperatures (T$_c$). Only the chemical composition of superconductors was used in this procedure. No physical predictors (neither experimental nor computational) of any kind were used. We achieved the coefficient of determination R$^2$$\simeq$0.93, which is comparable and in some cases higher then similar estimates using other artificial intelligence techniques. Based on this machine learning model, we predicted several new superconductors with high critical temperatures. We also discuss the factors that limit the learning process and suggest possible ways to overcome them.
Scalar chiral ground states of spin ladders with four-spin exchanges
Creators: name: Momoi, Tsutomu
name: Hikihara, Toshiya
name: Nakamura, Masaaki
name: Hu, Xiao
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show that scalar chiral order can be induced by four-spin exchanges in the two-leg spin ladder, using the spin-chirality duality transformation and matrix-product ansatz. Scalar-chiral-ordered states are found to be exact ground states in a family of spin ladder models. In this scalar chiral phase, there is a finite energy gap above the doubly degenerate ground states and a $Z_2 \times Z_2 \times Z_2$ symmetry is fully broken. It is also shown that the SU(4)-symmetric model, which is self-dual under the duality transformation, is on a multicritical point surrounded by the staggered dimer phase, the staggered scalar chiral phase, and the gapless phase.
description: 8 pages, 2 figures, to appear in Phys. Rev. B
THE INFLUENCE OF UNITED STATES MONETARY POLICY ON ARGENTINA AND BRAZIL SOYBEAN SUPPLY RESPONSE
Creators: name: Chen, Pei-Chi Peggy
name: Fletcher, Stanley M.
name: Huang, Chung-Liang
name: Chen, Pei-Chi Peggy
name: Fletcher, Stanley M.
name: Huang, Chung-Liang
Publisher: name: Unknown
Year: 1987
Subjects: Crop Production/Industries
Financial Economics
International Development

description: U.S. monetary pol"icy influence on Argentina and Brazil soybean supply response was investigated. An econometric model was constructed. ~~hile some economists hypothesized that a tight U.S. monetary policy coupled with the countries debt burden would encourage their soybean production, the results suggested that their· domestic policy concerns were more dominant.
Complete cohomology for extriangulated categories
Creators: name: Hu, Jiangsheng
name: Zhang, Dongdong
name: Zhao, Tiwei
name: Zhou, Panyue
Publisher: name: arXiv
Year: 2020
Subjects: subject: Representation Theory (math.RT)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18G80, 18E10, 18G25, 55N20

description: Let $(\mathcal{C},\mathbb{E},\mathfrak{s})$ be an extriangulated category with a proper class $ξ$ of $\mathbb{E}$-triangles. In this paper, we study complete cohomology of objects in $(\mathcal{C},\mathbb{E},\mathfrak{s})$ by applying $ξ$-projective resolutions and $ξ$-injective coresolutions constructed in $(\mathcal{C},\mathbb{E},\mathfrak{s})$. Vanishing of complete cohomology detects objects with finite $ξ$-projective dimension and finite $ξ$-injective dimension. As a consequence, we obtain some criteria for the validity of the Wakamatsu Tilting Conjecture and give a necessary and sufficient condition for a virtually Gorenstein algebra to be Gorenstein. Moreover, we give a general technique for computing complete cohomology of objects with finite $ξ$-$\mathcal{G}$projective dimension. As an application, the relationships between $ξ$-projective dimensions and $ξ$-$\mathcal{G}$projective dimensions for objects in $(\mathcal{C},\mathbb{E},\mathfrak{s})$ are given.
description: minor changes. arXiv admin note: text overlap with arXiv:1908.00931
Lathusia ferruginea
Creators: name: Clarke, Robin
name: Zamalloa, Sonia
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Lathusia
Lathusia ferruginea

description: Lathusia ferruginea (Bruch, 1908)
 Dept. Santa Cruz. 19°00′S / 63°14′W, 680 m, 20 km S Abapo: on/flying to flowers of “Tinajero A”, male and 2 females, 17.XII.2007 (RCSZ).
 Dept. Chuquisaca. 20°36′S / 63°17′W, 750 m, 21 km N Machereti: on/flying to flowers of “Tinajero A”, 2 females, 10.XII.2007 (RCSZ).
 Dept. Tarija. 21°01′S / 63°18′W, 600 m, 30 km N of Villamontes, 4 km E of Camatindi, Semi-dry Chaco Forest: on/flying to flowers of “Tinajero A”, 2 males and female, 11.12.2007 (RCSZ). 21°16′S / 63°27′W, 366 m, 2 km S Puente Usterez, west bank Rio Pilcomayo: on/flying to flowers of “Naranjillo”, female, 12.XII.2011 (RCSZ). 21°18′S / 63°30′W, 500 m, 7 km W of Villamontes: on/flying to flowers of “Tinajero A”, 2 males, 12.XII.2007, male, 5.I.2008 (RCSZ). 21°21′S / 63°12′W, 400 m, 34 km E Villamontes, Lomas El Quince, semi-dry Chaco Forest: on/flying to flowers of “Tinajero A”, 5 males and 3 females, 12.XII.2007 (RCSZ); male and female, 13.XII.2008 (MNKM).
description: Published as part of Clarke, Robin & Zamalloa, Sonia, 2018, Bolivian anthophilous Cerambycinae (Coleoptera: Cerambycidae) host flower records, pp. 1-35 in Insecta Mundi 2018 (640) on page 22, DOI: 10.5281/zenodo.4645968
Life Cycle Analysis: Comparing PLA Plastic Food Use Products On the Basis of Energy Consumption
Creators: name: Lee, Sin Yin (Judy)
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
In Quest of a True Model of the Universe
Creators: name: Vishwakarma, R. G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: While many observations support the validity of Einstein's general relativity as the theory of gravity, there are yet many that suggest the presence of new physics. In order to explain the high-redshift supernovae Ia observations together with the recently made precise observations of the CMB anisotropy by WMAP, the standard cosmology has to invoke some hypothetical matter with unnatural properties which is very speculative. This casts doubts upon the foundations of the standard cosmology and suggests that some theoretical concept may still be missing from the theory. Such a concept might be the rotation of the astronomical objects, which has not been properly taken care of when we claim that a perfect fluid is a good approximation to the real contents of the universe. A crude estimation of the angular kinetic energy of massive galaxies indicates to a possibility to have $Ω_{\rm total}\approx 1$ without invoking the hypothetical dark matter or dark energy. This picture also appears consistent with the recent observations of a great abundance of old massive galaxies made by Gemini Deep Deep Survey. However, a proper relativistic theory of the rotating objects is still to be investigated. It is expected that the consequences of incorporating rotation in general relativity, and hence in special relativity, would be profound.
description: Comments on the results of DAMA experiment, rotation curves of galaxies, relativistic aspect of the proposed idea, etc. have been added
CASH FLOW COMPARISONS OF TWO METHODS OF ALLOCATING COOPERATIVE PA TRON AGE REFUNDS
Creators: name: Royer, Jeffery S.
name: Royer, Jeffery S.
Publisher: name: Unknown
Year: 1987
Subjects: Agricultural and Food Policy
Financial Economics

description: Nonqualified allocations offer an alternative method of allocating patronage refunds. This paper compares patron after-tax cash flows from qualified and nonqualified allocations. Results suggest neither method is clearly superior. Because of tax timing differences, present values of cash flows from nonqualified allocations often are comparatively greater than nominal values.
THE FARM TAX BURDEN: 1979 VERSUS 1983 WITH REGIONAL COMPARISONS
Creators: name: Kinnucan, Henry
name: Duffy, Patricia A.
name: Kinnucan, Henry
name: Duffy, Patricia A.
Publisher: name: Unknown
Year: 1987
Subjects: Agricultural and Food Policy
Agricultural Finance

description: Average tax burdens for agricultural producers in two tax years (1979 and 1983) were computed for nine geographic regions of the U.S. Results indicate that regional differences in tax burdens exist and have widened over time, and that total tax burdens have not declined from 1979 to 1983.
ECONOMIC CONSEQUENCES OF TAX REFORM ON AGRICULTURAL INVESTMENT
Creators: name: LeBlanc, Michael
name: Durst, Ron
name: Hrubovcak, James
name: Conway, Roger
name: LeBlanc, Michael
name: Durst, Ron
name: Hrubovcak, James
name: Conway, Roger
Publisher: name: Unknown
Year: 1987
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Political Economy
subject: Tax policy
subject: net investment
subject: Tax Reform Act of 1986

description: The investment effects of five major tax proposals and the Tax Reform Act of 1986 1 are examined by combining an econometrically estimated investment function with the cost of capital associated with each proposal. All the tax proposals increase the cost of capital and amplify current decreases in agricultural capital disinvestment. The proposals are bounded above by the Kemp-Kasten plan which reduces net investment by about $190 million and below by the House plan which accounts for yearly declines in excess of $320 million. In addition, the repeal of the investment tax credit is responsible for about 98 percent of the decline in net investment under the Tax Reform Act of 1986.
Farm Tax Liability under Tax Reform
Creators: name: Rossi, Clifford
name: Durst, Ron
name: Rossi, Clifford
name: Durst, Ron
Publisher: name: Unknown
Year: 1987
Subjects: Agricultural and Food Policy
Agricultural Finance
Political Economy

description: The effects of the Tax Reform Act of 1986 on farm sole proprietors are examined in a tax accounting simulation model of over 15,000 farm tax returns. Tax reform should result in lower tax liability for mo~t taxpayers with the exception of those engaged in dairy operations.
title: Seasonal effects in the long-term correction of short-term wind measurements using reanalysis data
Creators: name: Basse, Alexander
name: Callies, Doron
name: Grötzner, Anselm
name: Pauscher, Lukas
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: 333
subject: Anemometrie
subject: Windenergie
subject: Korrektur
subject: Daten
subject: Windgeschwindigkeit
subject: Datenanalyse

description: Gefördert durch den Publikationsfonds der Universität Kassel
Behavioral Responses of Farmers to Risk
Creators: name: Watt, David L.
name: Larson, James A.
name: Watt, David L.
name: Larson, James A.
Publisher: name: Unknown
Year: 1987
Subjects: Institutional and Behavioral Economics
Risk and Uncertainty

description: Optimal control and Monte Carlo simulation are used to measure farmers' risk attitudes. Discounting for the probablistic life expectancy of the firm. then comparing optimal capital structure to the observed. farmers in North Dakota internally rationed capital at a 19vel implying a time preference of money 6.39 percent below the rate expected of a risk neutral participant.
Thermal energy harvesting using pyroelectric-electrochemical coupling in ferroelectric materials
Creators: name: Zhang, Yan
name: Phuong, Pham Thi Thuy
name: Roake, Eleanor
name: Khanbareh, Hamideh
name: Wang, Yaqiong
name: Dunn, Steve
name: Bowen, Chris
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently, the coupling of ferroelectrics with electrochemical reactions has attracted increasing interest for harvesting waste heat. The change of polarisation of a ferroelectric with temperature can be used to influence chemical reactions, especially when the material is cycled near its Curie temperature. In this perspective, we introduce the principle of pyroelectric controlled electrochemical processes by harvesting waste heat energy and explore their potential electrochemical applications, such as water treatment, air purificiation and hydrogen generation. As an emerging approach for driving electrochemical reactions, the presence of thermal fluctuations and/or transient waste heat in the environment has the potential to be the primary thermal input for driving the change in polarisation of a pyroelectric to release charge for such reactions. There are a number of avenues to explore and we summarize strategies for forming multi-functional or hybrid materials and future directions such as selecting pyroelectrics with low Curie temperature (< 100 °C), improved heat conductivity, enhanced surface area or porosity, tailored microstructures and systems capable of operating over a broader temperature range.
Mitigating flicker noise in high-precision photometry. I -- Characterization of the noise structure, impact on the inferred transit parameters, and predictions for CHEOPS observations
Creators: name: Sulis, S.
name: Lendl, M.
name: Hofmeister, S.
name: Veronig, A.
name: Fossati, L.
name: Cubillos, P.
name: Van Grootel, V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In photometry, the short-timescale stellar variability ("flicker"), such as that caused by granulation and oscillations, can reach amplitudes comparable to the transit depth of Earth-sized planets and is correlated over the typical transit timescales. It can introduce systematic errors on the inferred planetary parameters when a small number of transits are observed. The objective of this paper is to characterize the statistical properties of this noise and quantify its impact on the inferred transit parameters. We used the extensive solar observations obtained with SoHO/VIRGO to characterize flicker noise. We simulated realistic transits across the solar disk using SDO/HMI data and used these to obtain transit light curves, which we used to estimate the errors made on the transit parameters. We make these light curves publicly available. To extend the study to a wider parameter range, we derived the properties of flicker noise using Kepler observations and studied their dependence on stellar parameters. Finally, we predicted the limiting stellar apparent magnitude for which the properties of the flicker noise can be extracted using high-precision CHEOPS and PLATO observations. Stellar granulation is a stochastic colored noise, and is stationary with respect to the stellar magnetic cycle. Both the flicker correlation timescales and amplitudes increase with the stellar mass and radius. If these correlations are not taken into account when fitting for the parameters of transiting exoplanets, this can bias the inferred parameters. In particular, we find errors of up to 10$\%$ on $R_p/R_s$ for an Earth-sized planet orbiting a Sun-like star. For F and G stars, flicker will significantly affect the inferred parameters of transits observed with CHEOPS and PLATO. Dedicated modeling strategies need to be developed to accurately characterize both the star and the transiting exoplanets.
description: 20 pages, 24 figures, accepted for publication in Astronomy & Astrophysics
IDENTIFYING A CSD EFFICIENT SET OF MIXTURES OF RISKY ALTERNATIVES FOR RISK PREFERRING DECISION MAKERS
Creators: name: McCamley, Francis
name: McCamley, Francis
Publisher: name: Unknown
Year: 1987
Subjects: Agricultural and Food Policy
Risk and Uncertainty

description: For risk preferring decision makers, identifying the SDWRF efficient set of mixtures of risky alternatives can be difficult. It appears to be easier to identify the efficient set for a combination of the CSD and SOWRF criteria. A procedure is suggested and illustrated using data from Hazell.
Rhopalophora collaris
Creators: name: Clarke, Robin
name: Zamalloa, Sonia
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Rhopalophora
Rhopalophora collaris

description: Rhopalophora collaris (Germar, 1824)
 Dept. Santa Cruz. 17°29′96″S/ 63°39′13″W, 430 m, 5 km SSE of Buena Vista, Hotel Flora and Fauna: on/flying to flowers of “Bejuco hoja lanuda”, male, 30.IV.2005 (RCSZ); on/flying to flowers of “ Guabira ”, male and female, 3.X.2005 (DZUP); 3 males and 2 females, 3–4.X.2005 (RCSZ); on/flying to flowers of “ Turere ”, male and female, 3.X.2005 (RCSZ).
 Dept. Tarija. 21°01′S / 63°18′W, 600 m, 30 km N of Villamontes, 4 km E of Camatindi, Semi-dry Chaco Forest: on/flying to flowers of “Tinajero A”, female, 11.12.2007 (RCSZ). 21°18′S / 63°30′W, 500 m, 7 km WSW of Villamontes: on/flying to flowers of “Tinajero A”, 3 females, 19.I.2006 (RCSZ); male, 12.XII.2007 (MNKM). 21°21′S / 63°12′W, 400 m, 34 km E Villamontes, Lomas El Quince, semi-dry Chaco Forest: on/ flying to flowers of “Tinajero A”, 5 males and 3 females, 12.XII.2007 (RCSZ); 2 females, 13.XII.2007 (DZUP); female, 13.XII.2008 (MNKM). 21°42′S / 63°36′W, 762 m, 48 km N Yacuiba, 3–5 km Sanandita Road: on/flying to flowers of “Tinajero A”, female, 8.I.2010 (RCSZ).
description: Published as part of Clarke, Robin & Zamalloa, Sonia, 2018, Bolivian anthophilous Cerambycinae (Coleoptera: Cerambycidae) host flower records, pp. 1-35 in Insecta Mundi 2018 (640) on page 23, DOI: 10.5281/zenodo.4645968
Reconstruction of Atomic Ionization Probabilities in Intense Laser Fields
Creators: name: Goodworth, T. R. J.
name: Bryan, W. A.
name: Williams, I. D.
name: Newell, W. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Application of a parallel-projection inversion technique to z-scan spectra of multiply charged xenon and krypton ions, obtained by non-resonant field ionization of neutral targets, has for the first time permitted the direct observation of intensity-dependent ionization probabilities. These ionization efficiency curves have highlighted the presence of structure in the tunnelling regime, previously unobserved under full-volume techniques.
description: 8 pages, 4 figures
Amplified imitation in percolation model of stock market
Creators: name: Makowiec, D.
name: Gnacinski, P.
name: Miklaszeski, W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The herd behavior of the Cont Bouchaud model is amplified by allowing clusters to copy decisions of some other cluster in the next time step. The results of the model are compared to data from Warsaw Stock Exchange. It follows that the mechanism of the amplified imitation could be responsible for the sell decision on a poorly developed, emergent market.
description: lates + 12 files with figures
The Pd(100)-(SQRT(5) x SQRT(5) R27^o)-O surface oxide revisited
Creators: name: Todorova, M.
name: Lundgren, E.
name: Blum, V.
name: Mikkelsen, A.
name: Gray, S.
name: Gustafson, J.
name: Borg, M.
name: Rogal, J.
name: Reuter, K.
name: Andersen, J. N.
name: Scheffler, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Combining high-resolution core-level spectroscopy (HRCLS), scanning tunneling microscopy (STM) and density-functional theory (DFT) calculations we reanalyze the Pd(100)-(SQRT(5) x SQRT(5) R27^o)-O surface oxide phase. We find that the prevalent structural model, a rumpled PdO(001) film suggested by previous low energy electron diffraction (LEED) work (M. Saidy et al., Surf. Sci. 494, L799 (2001)), is incompatible with all three employed methods. Instead, we suggest the two-dimensional film to consist of a strained PdO(101) layer on top of Pd(100). LEED intensity calculations show that this model is compatible with the experimental data of Saidy et al.
description: 8 pages including 5 figures, Related publications can be found at http://www.fhi-berlin.mpg.de/th/paper.html
Reduced Dilation-Erosion Perceptron for Binary Classification
Creators: name: Valle, Marcos Eduardo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Dilation and erosion are two elementary operations from mathematical morphology, a non-linear lattice computing methodology widely used for image processing and analysis. The dilation-erosion perceptron (DEP) is a morphological neural network obtained by a convex combination of a dilation and an erosion followed by the application of a hard-limiter function for binary classification tasks. A DEP classifier can be trained using a convex-concave procedure along with the minimization of the hinge loss function. As a lattice computing model, the DEP classifier assumes the feature and class spaces are partially ordered sets. In many practical situations, however, there is no natural ordering for the feature patterns. Using concepts from multi-valued mathematical morphology, this paper introduces the reduced dilation-erosion (r-DEP) classifier. An r-DEP classifier is obtained by endowing the feature space with an appropriate reduced ordering. Such reduced ordering can be determined using two approaches: One based on an ensemble of support vector classifiers (SVCs) with different kernels and the other based on a bagging of similar SVCs trained using different samples of the training set. Using several binary classification datasets from the OpenML repository, the ensemble and bagging r-DEP classifiers yielded in mean higher balanced accuracy scores than the linear, polynomial, and radial basis function (RBF) SVCs as well as their ensemble and a bagging of RBF SVCs.
Josephson effect in quasi one-dimensional unconventional superconductors
Creators: name: Asano, Y.
name: Tanaka, Y.
name: Tanuma, Y.
name: Kuroki, K.
name: Tsuchiura, H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Josephson effect in junctions of quasi one-dimensional triangular lattice superconductors is discussed, where the theoretical model corresponds to organic superconductors (TMTSF)_2PF_6. We assume the quarter-filling electron band and p, d and f wave like pairing symmetries in organic superconductors. To realize the electronic structures in organic superconductors, we introduce the asymmetric hopping integral, (t') among second nearest lattice sites. At t'=0, the Josephson current in the d wave symmetry saturates in low temperatures, whereas those in the p and the f wave symmetries show the low-temperature anomaly due to the zero-energy state at the junction interfaces. The low-temperature anomaly appears even in the d wave symmetry in the presence of t', whereas the anomaly is suppressed in the f wave symmetry. The shape of the Fermi surface is an important factor for the formation of the ZES in the quarter-filling electron systems.
description: 10 pages
The Spectrum of $P$-Wave Hidden-Charm Exotic Mesons in the Diquark Model
Creators: name: Giron, Jesse F.
name: Lebed, Richard F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the fine structure in the spectrum of known and predicted negative-parity hidden-charm exotic meson states, which comprise the lowest $P$-wave multiplet in the dynamical diquark model. Starting with a form previously shown to successfully describe the $S$-wave states, we develop a 5-parameter Hamiltonian that includes spin-orbit and tensor terms. After discussing the experimental status of the observed $J^{PC} = 1^{--}$ states $Y$ with respect to masses and decay modes (classified by eigenvalues of heavy-quark spin), we note a number of inconsistencies between measurements from different experiments that complicate a unique determination of the spectrum. Outlining a variety of scenarios for interpreting the $Y$ data, we perform fits to each one, obtaining results that demonstrate differing possibilities for the $P$-wave spectra. Choosing one of these fits for illustration, we predict masses for all 28 isomultiplets in this $1P$ multiplet, compare the results to tantalizing hints in the data, and discuss the rich discovery potential for new states.
description: 15 pages, 1 LaTeX figures. Small revisions to the Reference section. Level diagram has now been included as a figure
Aluminum Removal from Photographic Waste
Creators: name: Tam, Kenny
name: Jung, Tiffany
name: Favel, Kristen
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Zur digitalen Transformation in Deutschland und Südkorea
Creators: name: Schüler, Diana
name: Gänge, Madeleine
name: Prinz, Michael
name: Wrona, Kamil J.
Publisher: name: Bielefeld University
Year: 2020
Subjects: subject: 300

description: The ongoing digital transformation is having an increasing impact on the economy and society, and the current Covid-19 pandemic seems to accelerate this process. In this paper, we take a look at the implications of the digital transformation in the areas of the health care system, the working world and education in Germany and South Korea. First, we introduce the terminology and emphasize the importance of the digital transformation for the economy and society. Then the paper deals with the opportunities and challenges of the digital transformation in each area in both countries. Overall, we conclude that the opportunities of the digital transformation can only be exploited if a nation-wide, state-of-the-art digital infrastructure is in place. In the healthcare sector, there is a need for more research, but especially a shift towards higher public acceptance of digital healthcare seems necessary. In the workplace, the digital transformation leads to more telework, which needs to be accompanied by training and a legal framework. In education, the use of digital technologies in classrooms should be promoted more strongly and digital skills/digital literacy should become part of the curriculum. In addition to the numerous opportunities, both countries face several challenges that have to be overcome.