cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fluctuation dynamo in a weakly collisional plasma
Creators: name: St-Onge, D. A.
name: Kunz, M. W.
name: Squire, J.
name: Schekochihin, A. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The turbulent amplification of cosmic magnetic fields depends upon the material properties of the host plasma. In many hot, dilute astrophysical systems, such as the intracluster medium (ICM) of galaxy clusters, the rarity of particle--particle collisions allows departures from local thermodynamic equilibrium. These departures exert anisotropic viscous stresses on the plasma motions that inhibit their ability to stretch magnetic-field lines. We present a numerical study of the fluctuation dynamo in a weakly collisional plasma using magnetohydrodynamic (MHD) equations endowed with a field-parallel viscous (Braginskii) stress. When the stress is limited to values consistent with a pressure anisotropy regulated by firehose and mirror instabilities, the Braginskii-MHD dynamo largely resembles its MHD counterpart. If instead the parallel viscous stress is left unabated -- a situation relevant to recent kinetic simulations of the fluctuation dynamo and to the early stages of the dynamo in a magnetized ICM -- the dynamo changes its character, amplifying the magnetic field while exhibiting many characteristics of the saturated state of the large-Prandtl-number (${\rm Pm}\gtrsim{1}$) MHD dynamo. We construct an analytic model for the Braginskii-MHD dynamo in this regime, which successfully matches magnetic-energy spectra. A prediction of this model, confirmed by our simulations, is that a Braginskii-MHD plasma without pressure-anisotropy limiters will not support a dynamo if the ratio of perpendicular and parallel viscosities is too small. This ratio reflects the relative allowed rates of field-line stretching and mixing, the latter of which promotes resistive dissipation of the magnetic field. In all cases that do exhibit a dynamo, the generated magnetic field is organized into folds that persist into the saturated state and bias the chaotic flow to acquire a scale-dependent spectral anisotropy.
description: 62 pages, 25 figures, 1 table, accepted for publication to Journal of Plasma Physics
Strongly Non-Arrhenius Self-Interstitial Diffusion in Vanadium
Creators: name: Zepeda-Ruiz, Luis A.
name: Rottler, Joerg
name: Han, Seungwu
name: Ackland, Graeme J.
name: Car, Roberto
name: Srolovitz, David J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study diffusion of self-interstitial atoms (SIAs) in vanadium via molecular dynamics simulations. The <111>-split interstitials are observed to diffuse one-dimensionally at low temperature, but rotate into other <111> directions as the temperature is increased. The SIA diffusion is highly non-Arrhenius. At T<600 K, this behavior arises from temperature-dependent correlations. At T>600 K, the Arrhenius expression for thermally activated diffusion breaks down when the migration barriers become small compared to the thermal energy. This leads to Arrhenius diffusion kinetics at low T and diffusivity proportional to temperature at high T.
description: 4 pages, 4 figures
Dark Matter And $B_s \to μ^+ μ^-$ With Minimal $SO_{10}$ Soft SUSY Breaking
Creators: name: Dermisek, R.
name: Raby, S.
name: Roszkowski, L.
name: de Austri, R. Ruiz
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: CMSSM boundary conditions are usually used when calculating cosmological dark matter densities. In this paper we calculate the cosmological density of dark matter in the MSSM using minimal $SO_{10}$ soft SUSY breaking boundary conditions. These boundary conditions incorporate several attractive features: they are consistent with $SO_{10}$ Yukawa unification, they result in a "natural" inverted scalar mass hierarchy and they reduce the dimension 5 operator contribution to the proton decay rate. With regards to dark matter, on the other hand, this is to a large extent an unexplored territory with large squark and slepton masses $m_{16}$, large $A_0$ and small $ \{μ, M_{1/2} \} $. We find that in most regions of parameter space the cosmological density of dark matter is considerably less than required by the data. However there is a well--defined, narrow region of parameter space which provides the observed relic density of dark matter, as well as a good fit to precision electroweak data, including top, bottom and tau masses, and acceptable bounds on the branching fraction of $B_s \to μ^+ μ^-$. We present predictions for Higgs and SUSY spectra, the dark matter detection cross section and the branching ratio ${\rm BR}(B_s\to μ^+ μ^-)$ in this region of parameter space.
description: 15 pages, 5 figures
Evidence for a Large Stellar Bar in the LSB Galaxy UGC 7321
Creators: name: Pohlen, M.
name: Balcells, M.
name: Luetticke, R.
name: Dettmar, R. -J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Late-type spiral galaxies are thought to be the dynamically simplest type of disk galaxies and our understanding of their properties plays a key role in the galaxy formation and evolution scenarios. The low surface brightness (LSB) galaxy UGC 7321, a nearby, isolated, ``superthin'' edge-on galaxy, is an ideal object to study those purely disk dominated bulge-less galaxies. Although late type spirals are believed to exhibit the simplest possible structure, even prior observations showed deviations from a pure single component exponential disk in the case of UGC 7321. We present for the first time photometric evidence for peanut-shaped outer isophotes from a deep optical (R-band) image of UGC 7321. Observations and dynamical modeling suggest that boxy/peanut-shaped (b/p) bulges in general form through the buckling instability in bars of the parent galaxy disks. Together with recent HI observations supporting the presence of a stellar bar in UGC 7321 this could be the earliest known case of the buckling process during the evolutionary life of a LSB galaxy, whereby material in the disk-bar has started to be pumped up above the disk, but a genuine bulge has not yet formed.
description: LaTeX, 6 pages, 4 figures, accepted to be published in A&A
Additional file 3 of Transcriptome profiling of non-climacteric ‘yellow’ melon during ripening: insights on sugar metabolism
Creators: name: Schemberger, Michelle Orane
name: Stroka, Marília Aparecida
name: Reis, Letícia
name: Los, Kamila Karoline De Souza
name: Gillize Aparecida Telles De Araujo
name: Sfeir, Michelle Zibetti Tadra
name: Galvão, Carolina Weigert
name: Etto, Rafael Mazer
name: Baptistão, Amanda Regina Godoy
name: Ayub, Ricardo Antonio
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Plant Biology
subject: Computational Biology

description: Additional File 3: Table S3. Target genes and reference genes used in RT-qPCR analysis; Figure S2. Pearson’s correlation between the 10 DAP and 40 DAP development stage. The expression ratio for RNA-seq and RT-qPCR analysis are represented by log2 fold change.
Superhumps, Magnetic Fields and the Mass-ratio in AM Canum Venaticorum
Creators: name: Pearson, K. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that the observed K-velocities and periodicities of AM CVn can be reconciled given a mass ratio of 0.22 and a secondary star with a modest magnetic field of surface strength of order 1 Tesla. We see that the new mass ratio implies that the secondary is most likely semi-degenerate. The effect of the field on the accretion disc structure is examined. The theory of precessing discs and resonant orbits is generalised to encompass higher order resonances than 3:2 and shown to retain consistency with the new mass ratio.
description: 6 pages, 4 figures, to appear in Monthly Notices of the Royal Astronomical Society
The nature of a gravitationally lensed sub-millimetre arc in MS0451.6-0305: two interacting galaxies at z~2.9?
Creators: name: Borys, C.
name: Chapman, S. C.
name: Donahue, M.
name: Fahlman, G.
name: Halpern, M.
name: Kneib, J. -P.
name: Newbury, P.
name: Scott, D.
name: Smith, G. P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a new SCUBA image of the cluster MS0451.6-0305, which exhibits strong, extended sub-mm flux at 850 microns. The most striking feature in the map is an elongated region of bright sub-mm emission, with a flux density of >10 mJy over several beam-sizes. This region is apparently coincident with a previously known optical arc (which turns out to be a strongly lensed Lyman Break Galaxy at z=2.911), as well as with a newly identified multiply-imaged ERO (Extremely Red Object) pair predicted to be at a similar, if not identical redshift. By combing a detailed lensing model with deep images from HST, Chandra, CFHT, JCMT, and spectra from the VLT, we conclude that both the strongly lensed optical arc and ERO systems have properties consistent with known sub-mm emitters. Using a simple model for the two sources, we estimate that the multiply-lensed EROs contribute the majority of the flux in the SCUBA lensed arc. Correcting for the lensing amplification, we estimate that the inherent 850 micron fluxes for both objects are ~0.4 mJy. If the LBG and ERO pair are truly at the same redshift, then they are separated by only ~10 kpc in the source plane, and hence constitute an interacting system at z~2.9. Higher angular resolution observations in sub-mm/mm will permit us to more accurately separate the contribution from each candidate, and better understand the nature of this system.
description: Accepted for publication in MNRAS. 10 pages, 7 figures (1 in colour). A higher resolution version can be found at http://www.submm.caltech.edu/~borys/papers/ms0451.pdf
Interpersonal comparisons of well-being
Creators: name: Blackorby, Charles
name: Bossert, Walter
name: Blackorby, Charles
name: Bossert, Walter
Publisher: name: Unknown
Year: 2004
Subjects: subject: Health Economics and Policy
subject: Public Economics
subject: Arrow’s theorem
subject: social choice with interpersonal utility comparisons
subject: welfarism

description: This paper, which is to be published as a chapter in the Oxford Handbook of Political Economy, provides an introduction to social-choice theory with interpersonal comparisons of well-being. We argue that the most promising route of escape from the negative conclusion of Arrow’s theorem is to use a richer informational environment than ordinal measurability and the absence of interpersonal comparability of well-being. We discuss welfarist social evaluation (which requires that the levels of individual well-being in two alternatives are the only determinants of their social ranking) and present characterizations of some important social-evaluation orderings.
Tax Incidence, Majority Voting and Capital Market Integration
Creators: name: Lockwood, Ben
name: Makris, Miltiadis
name: Lockwood, Ben
name: Makris, Miltiadis
Publisher: name: Unknown
Year: 2004
Subjects: Financial Economics
Political Economy

description: We re-examine, from a political economy perspective, the standard view that higher capital mobility results in lower capital taxes - a view, in fact, that is not confirmed by the available empirical evidence. We show that when a small economy is opened to capital mobility, the change of incidence of a tax on capital - from capital owners to owners of the immobile factor - may interact in such a way with political decision-making so as to cause a rise in the equilibrium tax. This can happen whether or not the fixed factor (labour) can be taxed.
Science as Inspiration for the Fall of Phaeton by Peter Paul Rubens
Creators: name: Kirk, Elizabeth W.
name: Russell, H. Diane
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3601
subject: Art history, theory and criticism

description: Research paper submitted to American University in partial fulfillment of the Degree of Master of Arts; approved as non-thesis option
A Measure of the Goodness of Fit in Unbinned Likelihood Fits; End of Bayesianism?
Creators: name: Raja, Rajendran
Publisher: name: arXiv
Year: 2004
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Maximum likelihood fits to data can be done using binned data (histograms) and unbinned data. With binned data, one gets not only the fitted parameters but also a measure of the goodness of fit. With unbinned data, currently, the fitted parameters are obtained but no measure of goodness of fit is available. This remains, to date, an unsolved problem in statistics. Using Bayes' theorem and likelihood ratios, we provide a method by which both the fitted quantities and a measure of the goodness of fit are obtained for unbinned likelihood fits, as well as errors in the fitted quantities. The quantity, conventionally interpreted as a Bayesian prior, is seen in this scheme to be a number not a distribution, that is determined from data.
description: 8 Pages, 6 Figures, Submitted to PHYSTAT2003, SLAC, Stanford, California, September 8-11,2003
Local polarization in oxygen-deficient LaMnO$_3$ induced by charge localization in the Jahn-Teller distorted structure
Creators: name: Ricca, Chiara
name: Niederhauser, Nicolas
name: Aschauer, Ulrich
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The functional properties of transition metal perovskite oxides are known to result from a complex interplay of magnetism, polarization, strain, and stoichiometry. Here, we show that for materials with a cooperative Jahn-Teller distortion, such as LaMnO$_3$ (LMO), the orbital order can also couple to the defect chemistry and induce novel material properties. At low temperatures, LMO exhibits a strong Jahn-Teller distortion that splits the $e_g$ orbitals of the high-spin Mn$^{3+}$ ions and leads to alternating long, short, and intermediate Mn--O bonds. Our DFT+$U$ calculations show that, as a result of this orbital order, the charge localization in LMO upon oxygen vacancy formation differs from other manganites, like SrMnO$_3$, where the two extra electrons reduce the two Mn sites adjacent to the vacancy. In LMO, relaxations around the defect depend on which type of Mn--O bond is broken, affecting the $d$-orbital energies and leading to asymmetric and hence polar excess-electron localization with respect to the vacancy. Moreover, we show that the Mn--O bond lengths, orbital order and consequently the charge localization and polarity are tunable via strain.
description: 6 pages (+2 SI), 4 figures (+1 SI)
Southwest Pieta by Luis Jimenez : A Legend in Fiberglass
Creators: name: Kirk, Elizabeth W.
name: Higdon, Elizabeth
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3601
subject: Art history, theory and criticism

description: Research paper submitted to American University in partial fulfillment of the Degree of Master of Arts; approved as non-thesis option
Additional file 11 of Transcriptome profiling of non-climacteric ‘yellow’ melon during ripening: insights on sugar metabolism
Creators: name: Schemberger, Michelle Orane
name: Stroka, Marília Aparecida
name: Reis, Letícia
name: Los, Kamila Karoline De Souza
name: Gillize Aparecida Telles De Araujo
name: Sfeir, Michelle Zibetti Tadra
name: Galvão, Carolina Weigert
name: Etto, Rafael Mazer
name: Baptistão, Amanda Regina Godoy
name: Ayub, Ricardo Antonio
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Plant Biology
subject: Computational Biology

description: Additional File 11: Figure S10. Graphics of the normalized gene counts obtained by RNA-seq results (plotCounts function of DESeq2 analysis – differential gene expression analysis based on negative binomial distribution).
An investigation into the viability of a waste heat powered greenhouse
Creators: name: Bae, Do Youl
name: Ng, Calvin
name: Pateman, Joseph
Publisher: name: The University of British Columbia
Year: 2014

description: UBC plans to build a microbrewery on campus that will produce excess steam as a by-product of the brewing process. This is potentially an abundant source of heat energy and should be retained for use to ensure and further promote sustainability on campus. This investigation assumes the primary source of heat energy is steam supplied from a microbrewery. In order to assess the viability of any potential structures to use this waste heat energy, a triple bottom line analysis will be used along with thermodynamic, material and economic analysis. This investigation deals with the viability of building a waste heat powered greenhouse on the roof of the new SUB currently under construction at UBC. Originally, the plan involved utilisation of waste heat in the form of steam produced by a proposed microbrewery to be constructed in the new SUB at UBC; however, as plans for the new building changed, the brewery project was moved elsewhere. The crux of the issue remained however, can a greenhouse be constructed, either on the roof of the SUB or elsewhere, that is heated predominantly by waste heat? Using a triple bottom line analysis which takes into account economic, environmental and social aspects, the viability of such a project was assessed. We found that a greenhouse using an in-soil radiant heating system would be a good solution. Economically, the greenhouse is the most conservative to construct and maintain. Furthermore, it is a viable, low risk revenue stream generated by saving electricity and producing crops that will be grown year-round. Environmentally, the energy savings from using waste heat as opposed to buying electricity, is substantial. Additionally, the materials used in the construction of the greenhouse are long lasting, easily recycled materials. Socially, the greenhouse provides a practical learning environment for students and faculty as well as a source of entertainment for any visitors. This investigation shows that the greenhouse is the most viable option economically, environmentally and socially. We strongly recommend that a waste heat powered greenhouse be constructed on the roof of the new SUB. 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.”
USA Today Poll # 1311
Creators: name: USA Today
Publisher: name: Roper Center for Public Opinion Research
Year: 2022

description: Most important issues in 1984 presidential campaign; Lebanon: likelihood of peace settlement, Reagan's handling; federal deficit: size, importance, presidential/congressional responsibility; balance budget by reducing national defense/domestic programs, increase federal income tax; Reagan vs. Democrat's likelihood of reducing deficit; expectations of: another recession, rise in interest rates, increased personal income tax, high inflation rates, major economic collapse; registered to vote, party, likely to vote; favorable/unfavorable opinions of presidential candidates; registered Democrats only: attitudes toward Democratic candidates; Reagan's handling of: economy, foreign policy, Soviet relations, spending on defense/domestic programs, federal deficit, tax reduction, environmental issues, women's rights, welfare policies, agricultural policies; Reagan vs.: Mondale, John Glenn; vote in 1980 election: Reagan/Carter; television: hours per day it's on, time actually watching, cable , movie channels, VCRs, time spent watching network programs, ratings of : nightly national news, news specials, entertainment shows, specials drama series, regular sport programs, special sports evens; quality of network TV; attitudes towards pro football vs. baseball; lawyers/legal profession--agree/disagree: very high ethical standards, recommend unnecessary work; take on work for which they are not competent, protect client's interest, surplus lawyers result in unnecessary court cases, reasonable fees for service rendered; political affiliation.
Referendum-led Immigration Policy in the Welfare State
Creators: name: Tamura, Yuji
name: Tamura, Yuji
Publisher: name: Unknown
Year: 2004
Subjects: subject: Labor and Human Capital
subject: Political Economy
subject: Public Economics
subject: international migration
subject: majority voting
subject: intragenerational transfer
subject: intergenerational transfer

description: Majority voting outcomes over different immigration levels of lowskilled workers are examined in a two-period overlapping-generation model in which the labour market and intra- and intergenerational transfer schemes translate the impact of immigration into preferences of heterogeneous citizens. In most of the cases being examined, the model predicts a unique policy choice. However, a voting cycle can also arise in certain circumstances, subjecting the referendum outcome to manipulation.
Do Elections Always Motivate Incumbents? Learning vs. Career Concerns
Creators: name: Le Borgne, Eric
name: Lockwood, Ben
name: Le Borgne, Eric
name: Lockwood, Ben
Publisher: name: Unknown
Year: 2004
Subjects: subject: Political Economy
subject: Public Economics
subject: Research Methods/ Statistical Methods
subject: Career Concerns
subject: Elections
subject: Citizen-Candidate
subject: Learning
subject: Effort
subject: Incomplete Information

description: This paper studies a principal-agent model of the relationship between officeholder and the electorate, where everyone is initially uninformed about the officeholder’s ability. If office-holder effort and ability interact in the determination of performance in office, then an office-holder has an incentive to learn i.e. raise effort so that performance becomes a more accurate signal of her ability. Elections reduce the learning effect, and the reduction in this effect may more than offset the positive “career concerns” effect of elections on effort. Moreover, when this occurs, appointment of officials may welfare-dominate elections
Additional file 12 of Transcriptome profiling of non-climacteric ‘yellow’ melon during ripening: insights on sugar metabolism
Creators: name: Schemberger, Michelle Orane
name: Stroka, Marília Aparecida
name: Reis, Letícia
name: Los, Kamila Karoline De Souza
name: Gillize Aparecida Telles De Araujo
name: Sfeir, Michelle Zibetti Tadra
name: Galvão, Carolina Weigert
name: Etto, Rafael Mazer
name: Baptistão, Amanda Regina Godoy
name: Ayub, Ricardo Antonio
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Plant Biology
subject: Computational Biology

description: Additional File 12: Figure S11. Alignment of protein isoforms related to sugar metabolism or associated pathways. The domains were detected by Pfam database (https://pfam.xfam.org/) and the amino acid sequences were aligned by the MUSCLE algorithm.
Images of a Woman's World : Friends, Family and Women's Work as Represented by French and Scandinavian Women Painters in the Late Nineteenth-Century
Creators: name: Carey, Janis
name: Broude, Norma
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3601
subject: Art history, theory and criticism

description: Research paper submitted to American University in partial fulfillment of the Degree of Master of Arts; approved as non-thesis option
Ks-band luminosity function of the z=1.237 cluster of galaxies RDCS J1252.9-2927
Creators: name: Toft, S.
name: Mainieri, V.
name: Rosati, P.
name: Lidman, C.
name: Demarco, R.
name: Nonino, M.
name: Stanford, S. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We derive the Ks-band luminosity function (LF) of the z=1.237 massive X-ray luminous cluster of galaxies RDCS J1252.9-2927. Photometric redshifts, derived from deep multi-wavelength BVRIzJKs data, and calibrated using a large subset of galaxies with spectroscopic redshifts, are used to separate the cluster galaxy population from the foreground and background field galaxy population. This allows for a simultaneous determination of the characteristic magnitude Ks* and faint end slope alpha of the LF without having to make an uncertain statistical background subtraction. The shape of the bright end of the derived LF is similar to that measured at similar restframe wavelengths (in the z-band) in local clusters, but the characteristic magnitude is brighter by Delta Mz*=-1.40(+0.49/-0.58) magnitudes, suggesting that the massive cluster ellipticals that dominate the bright end of the LF were already in place at z=1.237. The derived alpha is shallower (at the 2.2 sigma level) than the value measured in the z-band in clusters in the local universe, suggesting that RDCS J1252.9-2927 contains a relatively smaller fraction of low mass galaxies than clusters in the local universe. The results presented in this paper are a challenge for semi analytical hierarchical models of galaxy formation which predict the characteristic magnitude to grow fainter and the faint end slope to steepen with redshift as the massive galaxies break up into their progenitors. The observed evolution is consistent with a scenario in which clusters are composed of a population of massive galaxies which formed at high redshift (z>>1) and subsequently evolved passively, and a population of lower mass galaxies which are gradually accreted from the field, primarily at lower redshift (z<1). (Abridged)
description: Accepted for publication in Astronomy & Astrophysics: 11 pages, 11 figures, see also http://www.eso.org/~prosati/RDCS1252/
How the Virgin Mary Was Viewed as the Quintessential Mother in Fifteenth Century Florence : Interpreting the Maria Lactans Images
Creators: name: Carey, Janis
name: Garrard, Mary D.
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3601
subject: Art history, theory and criticism

description: Research paper submitted to American University in partial fulfillment of the Degree of Master of Arts; approved as non-thesis option
Scaling of variables and the relation between noncommutative parameters in Noncommutative Quantum Mechanics
Creators: name: Bertolami, O.
name: Rosa, J. G.
name: de Aragão, C. M. L.
name: Castorina, P.
name: Zappalà, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider Noncommutative Quantum Mechanics with phase space noncommutativity. In particular, we show that a scaling of variables leaves the noncommutative algebra invariant, so that only the self-consistent effective parameters of the model are physically relevant. We also discuss the recently proposed relation of direct proportionality between the noncommutative parameters, showing that it has a limited applicability.
description: Revtex4, 4 pages; version to match the published one
Voting Power and Voting Blocs
Creators: name: Leech, Dennis
name: Leech, Robert
name: Leech, Dennis
name: Leech, Robert
Publisher: name: Unknown
Year: 2004
Subjects: Agricultural and Food Policy
Political Economy

description: We investigate the applicability of voting power indices, in particular the Penrose index (aka absolute Banzhaf index), in the analysis of voting blocs by means of a hypothetical voting body. We use the power of individual bloc members to study the implications of the formation of blocs and how voting power varies as bloc size varies. This technique of analysis has many real world applications to legislatures and international bodies. It can be generalised in many ways: the analysis is a priori (assuming formal voting and ignoring actual voting behaviour) but can be made empirical with voting data; it examines the consequences of two blocs but can easily be extended to more.
USA Today Poll # 1409
Creators: name: USA Today
Publisher: name: Roper Center for Public Opinion Research
Year: 2022

description: 1984 Presidential election: likelihood of voting, opinion of Reagan, Mondale, Bush, Ferraro; Reagan/Bush vs. Mondale/Ferraro; Democratic/Republican congressional candidate; Democratic/Republican majority in Senate/House of Representatives; presidential debate: viewing, Reagan's performance; vice presidential debate viewing; Reagan's age; Bush/Ferraro in handling presidential responsibility; FBI: confidence compared with other federal agencies, state/local law enforcement, authority, effectiveness, improper use for political purposes; allocation of FBI's resources towards: bank robbery, kidnapping, corruption by public officials, spying, terrorism, organized crime, white collar crimes against business, civil rights violators; labor union membership; political ideology.
Merge-split Markov chain Monte Carlo for community detection
Creators: name: Peixoto, Tiago P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Machine Learning (cs.LG)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We present a Markov chain Monte Carlo scheme based on merges and splits of groups that is capable of efficiently sampling from the posterior distribution of network partitions, defined according to the stochastic block model (SBM). We demonstrate how schemes based on the move of single nodes between groups systematically fail at correctly sampling from the posterior distribution even on small networks, and how our merge-split approach behaves significantly better, and improves the mixing time of the Markov chain by several orders of magnitude in typical cases. We also show how the scheme can be straightforwardly extended to nested versions of the SBM, yielding asymptotically exact samples of hierarchical network partitions.
description: 13 pages, 6 figures. Code available at https://graph-tool.skewed.de/static/doc/demos/inference/inference.html
Additional file 10 of Transcriptome profiling of non-climacteric ‘yellow’ melon during ripening: insights on sugar metabolism
Creators: name: Schemberger, Michelle Orane
name: Stroka, Marília Aparecida
name: Reis, Letícia
name: Los, Kamila Karoline De Souza
name: Gillize Aparecida Telles De Araujo
name: Sfeir, Michelle Zibetti Tadra
name: Galvão, Carolina Weigert
name: Etto, Rafael Mazer
name: Baptistão, Amanda Regina Godoy
name: Ayub, Ricardo Antonio
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Plant Biology
subject: Computational Biology

description: Additional File 10: Figures S7, S8, S9. KEGG (Kyoto Encyclopedia of Genes and Genomes) analyses using Pathview software (https://pathview.uncc.edu/) of “starch and sucrose metabolism”, “galactose metabolism” and “amino sugar and nucleotide sugar metabolism”. The colour bar represents de log2 fold change of the maturation process and ranges from green (up-regulated genes in 40 DAP fruit) to red (up-regulated genes in 10 DAP fruit). The blue letters are enzyme short names described in the KEGG pathway and the purple are enzyme short names that were described in the literature associated with the sugar pathway [6, 9]. There are protein isoforms that act in the same metabolic route and the information of all log2 fold change were included.
Are Hard Budget Constraints for Sub-National Governments Always Efficient?
Creators: name: Besfamille, Marin
name: Lockwood, Ben
name: Besfamille, Marin
name: Lockwood, Ben
Publisher: name: Unknown
Year: 2004
Subjects: subject: Financial Economics
subject: Political Economy
subject: Fiscal federalism
subject: Bailouts
subject: Hard budget constraints

description: In fiscally decentralized countries, sub-national governments (SNGs) may face soft budget constraints and consequently invest and borrow too much. The policy literature claims that, with competitive capital markets and central governments imposing hard budget constraints (HBCs), inefficient investment by SNGs should not arise. We present a model where this is not the case: HBCs can be too "hard" and discourage investment that is socially efficient. The model combines a dynamic commitment problem as in Kornai, Maskin and Roland (2004) for central government with a moral hazard problem between central and SNG. The HBC over-incentivises the SNG to provide effort by penalizing it too much for project failure, thus leading ultimately to the possibility that socially efficient projects may not be undertaken.
Extraordinary transparency in continuous metallic thin films
Creators: name: Poeta, Diogo
Publisher: name: Zenodo
Year: 2021
Subjects: Transparent electrodes, Metal, Plasmon Resonances, TMDC.

description: Two dimensional materials have emerged as a toolbox for the fields of nanophotonics and nano-optoelectronics, providing new properties that are not possible to find in conventional materials. In particular, semiconductor transition metal dichalcogenides (TMDC) show unique optical properties.
 This project proposes a nanostructure based on TMDC which achieves extraordinary transmission levels through a continuous thin metallic film.
 We made a design of a metasurface of TMDC, placed both on top and under the continuous metal film, obtaining a final geometry TMDC-metal-TMDC. Due to the anisotropic high refractive index of the TMDC metasurface, photonic-plasmonic resonances are created, which makes it possible to obtain high transmission through the continuous metallic film. By means, of finite-difference time-domain (FDTD) simulations, we engender configurations showing up to 90% transmission for a 30 nm thick metal film of silver, which is an enhancement ten times higher than the transmission of the metal without the nanostructure.
 This high transmission is tunable by means of the variation of the geometric parameter of the metasurface. This effect could be suitable for actual applications in optoelectronic devices, such as: transparent solar cell electrodes, plasmonic filters, polarizers, or to increase the efficiency of resonant cavities for photodetectors. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 840064
Voting Power in the Bretton Woods Institutions
Creators: name: Leech, Dennis
name: Leech, Robert
name: Leech, Dennis
name: Leech, Robert
Publisher: name: Unknown
Year: 2004
Subjects: Institutional and Behavioral Economics
Political Economy

description: The constitutions of the Bretton Woods Institutions require decisions to be taken by weighted voting: each member country possesses a number of votes, depending on its quota allocation, all of which must always be cast as a bloc. This leads to a problem of democratic legitimacy since a member’s influence or voting power within such decision-making systems does not necessarily correspond to its voting weight. In previous work it has been shown that the present system of weighted voting in the IMF gives disproportionate influence to the USA at the expense of all other members. This effect occurs in both the board of governors and the executive board. This paper looks at the power implications of the structure of the IMF and World Bank executive boards (in which members are grouped into constituencies that cast their combined weighted votes as a bloc) from the point of view of formal voting power (using the Penrose power index). A criticism that is frequently made is that the present constituency structure and voting weights work to enhance the power of the developed and creditor countries at the expense of the poor, and that many countries are effectively impotent; we show that the weighted voting system adds to this anti-democratic bias and produces some unintended effects (for example the disfranchisement of Estonia in the Nordic/Baltic constituency and of five Central American republics in the Spanish/ Mexican/Venezuelan constituency, even though in neither case is there a dictator ). We argue generally that the voting power approach is more than just the calculation of power indices and can in fact produce solid facts by identifying cases where members of weighted voting bodies are actually disfranchised.
Eve and the Female Serpent
Creators: name: Coldiron, Lisa M.
name: Garrard, Mary D.
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3601
subject: Art history, theory and criticism

description: Research paper submitted to American University in partial fulfillment of the Degree of Master of Arts; approved as non-thesis option
Who Really Wants to be a Millionaire? Estimates of Risk Aversion from Gameshow Data
Creators: name: Hartley, Roger
name: Lanot, Gauthier
name: Walker, Ian
name: Hartley, Roger
name: Lanot, Gauthier
name: Walker, Ian
Publisher: name: Unknown
Year: 2005
Subjects: subject: Financial Economics
subject: Public Economics
subject: Risk and Uncertainty
subject: Risk aversion
subject: gameshow

description: There is a considerable variation in estimates of the degree of risk aversion in the literature. This paper analyses the behaviour of contestants in one of the most popular TV gameshows ever to estimate a CRRA model of behaviour. This gameshow has a number of features that makes it well suited for our analysis: the format is extremely straightforward, it involves no strategic decision-making, we have a large number of observations, and the prizes are cash and paid immediately, and cover a large range – up to £1 million. Our data sources have the virtue that we are able to check the representativeness of the gameshow participants. While the game requires skill, which complicates our analysis, the structure of the game is very simple so that complex probability calculations are not required of participants. The CRRA model is complex despite its restrictiveness because of the sequential nature of this game – answering a question correctly opens the option to hear the next question and this has a value that depends on the stage of the game and the player’s view about the difficulty of subsequent questions. We use the data to estimate the degree of risk aversion and how it varies across individuals. We investigate a number of departures from this simple model including allowing the RRA parameter to vary by gender and age. Even though the model is extremely restrictive, in particular, it features a single RRA parameter we find that it fits the data across a wide range of wealth remarkably well and yields very plausible parameter values.
Magnetization plateaus for spin-one bosons in optical lattices: Stern-Gerlach experiments with strongly correlated atoms
Creators: name: Imambekov, Adilet
name: Lukin, Mikhail
name: Demler, Eugene
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider insulating states of spin-one bosons in optical lattices in the presence of a weak magnetic field. For the states with more than one atom per lattice site we find a series of quantum phase transitions between states with fixed magnetization and a canted nematic phase. In the presence of a global confining potential, this unusual phase diagram leads to several novel phenomena, including formation of magnetization plateaus. We discuss how these effects can be observed using spatially resolved density measurements.
description: 4 pages 5 figures
Baryogenesis in a flat direction with neither baryon nor lepton charge
Creators: name: Chiba, Takeshi
name: Takahashi, Fuminobu
name: Yamaguchi, Masahide
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a new mechanism of spontaneous baryogenesis. Usually such mechanisms require a derivative coupling between a scalar field and baryon current. In our model, the scalar field instead derivatively couples to a current associated with some global symmetry $U(1)_Q$. In this case, baryogenesis is still possible provided that an interaction exists, which violates the baryon and $U(1)_Q$ symmetries simultaneously. As a concrete example, we discuss baryogenesis in a flat direction with neither baryon nor lepton charge.
description: 5 pages, no figures, to be published in Phys. Rev. Lett
PARTICIPATION BY FARMERS IN FORWARD CONTRACTING AND HEDGING
Creators: name: Asplund, Nathan M.
name: Forster, D. Lynn
name: Stout, Thomas T.
name: Asplund, Nathan M.
name: Forster, D. Lynn
name: Stout, Thomas T.
Publisher: name: Unknown
Year: 1989
Subjects: Agricultural Finance
Demand and Price Analysis

description: Logit models of farmers' forward pricing practices are developed. Results indicate: (a) farm size significantly affects use of hedging and forward contracting; (b) farmers inclination to search for information is related to their forward pricing practices; and (c) forward pricing practices are complementary with other risk reduction methods.
Gabrielle Munter : The Forgotten Expressionist
Creators: name: Coldiron, Lisa M.
name: Broude, Norma
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3601
subject: Art history, theory and criticism

description: Research paper submitted to American University in partial fulfillment of the Degree of Master of Arts; approved as non-thesis option
HEDGING OBJECTIVES, HEDGING MARKETS, AND THE RELEVANT RANGE OF HEDGE RATIOS
Creators: name: Blank, Steven C.
name: Blank, Steven C.
Publisher: name: Unknown
Year: 1989
Subjects: Agricultural and Food Policy
Risk and Uncertainty

description: The relationship between a hedger's objectives, choice of hedging market, and optimal hedge ratio is assessed. Propositions tested show hedgers may act as though they are pursuing the traditional objective of risk minimization even though the objective of all hedgers is utility maximization; a firm's optimal strategy can involve futures, options, or cash markets at different times; and utility maximizing hedge ratios can be greater than one or less than zero. Also, an innovation in the presentation of standard mean-variance results helps explain why a firm's optimal hedge ratio is not constant over time.
Optimal Cash Grain Sale, Storage, and Hedging Decisions for Grain Producers: A Stochastic Dynamic Programming Analysis
Creators: name: Tronstad, Russell
name: Tronstad, Russell
Publisher: name: Unknown
Year: 1989
Subjects: Agricultural and Food Policy
Crop Production/Industries
Farm Management

description: Optimal grain marketing decisions are given for different levels of cash price, basis (futures minus cash), before-tax income, grain storage, futures position, and value of futures position facing the firm. Results indicate that income tax considerations are very important in determining optimal cash grain sales and futures transactions.
Interactive map of the UBC food system
Creators: name: Feng, Alice
name: Hilton, Kelsey
name: McLeod, Shelby
name: Su, Aireen
name: Wong, Nathan
Publisher: name: The University of British Columbia
Year: 2014

description: In the face of current environmental challenges, it is imperative to change our consumption behaviors and attitudes towards an ecologically compatible approach. Through purchases and resource consumption, consumers can have a variety of indirect and direct effects on the environment. Informing consumers of the availability and accessibility of green products in their community encourages green consumerism. While UBC aims to be a global leader in sustainability, it currently lacks a map outlining sustainable food initiatives available on campus. To fill this knowledge gap, we developed the designs and concepts for an online interactive UBC sustainable food systems map. Our objectives were to identify the essential components of UBC’s sustainable food system and to conceive the designs and concepts for a visually engaging, functional, interactive map. To achieve our stated goals, we conducted extensive literature reviews, qualitative observations and key informant interviews to develop our map design and concepts, learn cartography principles as well as determine the map’s essential components. Through our research we found a number of interactive food system maps from other North American universities and drew from those examples to design our ideal map. The UBC Sustainable Food Guide (2011) helped us identify sustainable food outlets on campus. From the original list of outlets described in the guide, we improved upon their outlet descriptions and made new additions. Ultimately, we recommended the use of OpenStreet map (2013) as the base for the interactive map as well as the use of layers, and universally recognized icons to describe the variety of sustainable initiatives available. Key recommendations for stakeholders include methods for ensuring the reliability of the map, promoting it, as well as the possibility for future expansion. Further implications of the significance of the map are also discussed. 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.”
From fear to fun: an experimental investigation on the joint effect of emotional appeals and social norm elements in advertising on sustainable eating intention
Creators: name: Alessia Zenobio
Publisher: name: Zenodo
Year: 2024

description: This scientific paper explores the influence of emotional appeals and social norm elements on individuals' sustainable eating intentions. The study addresses the urgent need for sustainable practices in the food sector to mitigate environmental impact and reduce greenhouse gas emissions. Specifically, the research investigates the effects of fear and humor appeals compared to no appeals in advertisements on sustainable eating intention.