cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Tracking the Footprints of Spin Fluctuations: A MultiMethod, MultiMessenger Study of the Two-Dimensional Hubbard Model
Creators: name: Schäfer, Thomas
name: Wentzell, Nils
name: Šimkovic, Fedor
name: He, Yuan-Yao
name: Hille, Cornelia
name: Klett, Marcel
name: Eckhardt, Christian J.
name: Arzhang, Behnam
name: Harkov, Viktor
name: Régent, François-Marie Le
name: Kirsch, Alfred
name: Wang, Yan
name: Kim, Aaram J.
name: Kozik, Evgeny
name: Stepanov, Evgeny A.
name: Kauch, Anna
name: Andergassen, Sabine
name: Hansmann, Philipp
name: Rohe, Daniel
name: Vilk, Yuri M.
name: LeBlanc, James P. F.
name: Zhang, Shiwei
name: Tremblay, A. -M. S.
name: Ferrero, Michel
name: Parcollet, Olivier
name: Georges, Antoine
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The Hubbard model represents the fundamental model for interacting quantum systems and electronic correlations. Using the two-dimensional half-filled Hubbard model at weak coupling as a testing ground, we perform a comparative study of a comprehensive set of state of the art quantum many-body methods. Upon cooling into its insulating antiferromagnetic ground-state, the model hosts a rich sequence of distinct physical regimes with crossovers between a high-temperature incoherent regime, an intermediate temperature metallic regime and a low-temperature insulating regime with a pseudogap created by antiferromagnetic fluctuations. We assess the ability of each method to properly address these physical regimes and crossovers through the computation of several observables probing both quasiparticle properties and magnetic correlations, with two numerically exact methods (diagrammatic and determinantal quantum Monte Carlo) serving as a benchmark. By combining computational results and analytical insights, we elucidate the nature and role of spin fluctuations in each of these regimes. Based on this analysis, we explain how quasiparticles can coexist with increasingly long-range antiferromagnetic correlations, and why dynamical mean-field theory is found to provide a remarkably accurate approximation of local quantities in the metallic regime. We also critically discuss whether imaginary time methods are able to capture the non-Fermi liquid singularities of this fully nested system.
description: 55 pages, 39 figures, 288 references
Real option models for simulating digester system adoption on livestock farms in Emilia-Romagna
Creators: name: Bartolini, Fabio
name: Gallerani, Vittorio
name: Viaggi, Davide
name: Bartolini, Fabio
name: Gallerani, Vittorio
name: Viaggi, Davide
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Farm Management
subject: Land Economics/Use
subject: real options
subject: methane digester
subject: biogas
subject: investment
subject: uncertainty

description: Innovation and new technology adoption represent two central elements for the enterprise and industry development process in agriculture. The objective of this paper is to develop a farm-household model able to simulate the impacts of uncertainty in SFP, the selling price of energy and agricultural product prices parameters on the adoption of methane digester for biogas production. The model implemented is based on a real option approach that includes investment irreversibility and stochasticity in relevant parameters. The results show the relevance of uncertainty in determining the timing of adoption and emphasise the importance of predictability as a major component of policy design.
Additional file 1 of Racial differences in CD8+ T cell infiltration in breast tumors from Black and White women
Creators: name: Abdou, Yara
name: Attwood, Kristopher
name: Cheng, Ting-Yuan David
name: Yao, Song
name: Bandera, Elisa V.
name: Zirpoli, Gary R.
name: Ondracek, Rochelle Payne
name: Stein, Leighton
name: Wiam Bshara
name: Thaer Khoury
name: Ambrosone, Christine B.
name: Omilian, Angela R.
Publisher: name: figshare
Year: 2020
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1: Supplemental Table 1. CD8+ T cell density in breast tumors according to clinicopathological characteristics in Black and White cases in the WCHS, 2001-2017. The associations between CD8+ T cell density and clinicopathological characteristics were evaluated in the overall cohort and stratified by race using general linear models. Supplemental Table 2. Multivariable associations with survival for each tissue compartment (epithelial vs. stromal).
Water as an economic good: a solution, or a problem?
Creators: name: Perry, Christopher J.
name: Rock, Michael
name: Seckler, David
name: Perry, Christopher J.
name: Rock, Michael
name: Seckler, David
Publisher: name: Unknown
Year: 1997
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Farm Management
subject: Food Consumption/Nutrition/Food Safety
subject: Land Economics/Use
subject: Production Economics
subject: Water resource management
subject: Economic aspects
subject: Economic analysis
subject: Irrigated farming
subject: Water rights
subject: Pricing
subject: Privatization
subject: Marginal analysis
subject: Water market
subject: Water policy

description: Discusses the potential opportunities and pitfalls of introducing market forces into the process of water allocation. Proposes several preconditions for beneficial privatization of water allocation and argues for a more sophisticated form of analysis than that generally allowed by proponents of basic needs or of free market approaches.
Dark Matter Spectra from the Electroweak to the Planck Scale
Creators: name: Bauer, Christian W.
name: Rodd, Nicholas L.
name: Webber, Bryan R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We compute the decay spectrum for dark matter (DM) with masses above the scale of electroweak symmetry breaking, all the way to the Planck scale. For an arbitrary hard process involving a decay to the unbroken standard model, we determine the prompt distribution of stable states including photons, neutrinos, positrons, and antiprotons. These spectra are a crucial ingredient in the search for DM via indirect detection at the highest energies as being probed in current and upcoming experiments including IceCube, HAWC, CTA, and LHAASO. Our approach improves considerably on existing methods. For example, we include all relevant electroweak interactions. The importance of these effects grow with DM mass, and by an EeV our spectra can differ by orders of magnitude from existing results.
description: 8+24 pages, 3+12 figures, updated to published version. Spectra available at https://github.com/nickrodd/HDMSpectra
Enhanced anomalous Nernst effect in disordered Dirac and Weyl materials
Creators: name: Papaj, Michał
name: Fu, Liang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyze the thermoelectric response of Dirac and Weyl semimetals using the semiclassical approach, focusing on the extrinsic contributions due to skew-scattering and side jump. Our results apply to linear response Nernst effect in ferromagnetic Dirac materials such as Fe$_3$Sn$_2$, Weyl semimetal Co$_3$Sn$_2$S$_2$ and to second order response of monolayer graphene on hBN with trigonal warping. Our analysis indicates that the extrinsic contributions can be a significant component of anomalous Nernst response and used to explain an enhanced thermoelectric response.
description: 12 pages, 3 figures
Chemical Homogeneity in the Hyades
Creators: name: De Silva, G. M.
name: Sneden, C.
name: Paulson, D. B.
name: Asplund, M.
name: Bland-Hawthorn, J.
name: Bessell, M. S.
name: Freeman, K. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an abundance analysis of the heavy elements Zr, Ba, La, Ce, and Nd for Hyades cluster F-K dwarfs based on high resolution, high S/N ratio spectra from Keck/HIRES. The derived abundances show the stellar members to be highly uniform, although some elements show a small residual trend with temperature. The rms scatter for each element for the cluster members is as follows; Zr = 0.055 dex, Ba = 0.049 dex, Ce = 0.025 dex, La = 0.025 dex, Nd = 0.032 dex. This is consistent with the measurement errors, and implies that there is little or no intrinsic scatter among the Hyades members. Several stars thought to be non-members of the cluster based on their kinematics are found to deviate from the cluster mean abundances by about 2sigma. Establishing chemical homogeneity in open clusters is the primary requirement for the viability of chemically tagging Galactic disk stars to common formation sites, in order to unravel the dissipative history of early disk formation.
description: Accepted for publication in AJ
Composition, Size, and Surface Functionalization dependent Optical Properties of Lead Bromide Perovskite Nanocrystals
Creators: name: Ijaz, Palvasha
name: Imran, Muhammad
name: Soares, Márcio M.
name: Tolentino, Hélio C. N.
name: Martín-García, Beatriz
name: Giannini, Cinzia
name: Moreels, Iwan
name: Manna, Liberato
name: Krahne, Roman
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The photoluminescence (PL), color purity, and stability of lead halide perovskite nanocrystals depend critically on the surface passivation. We present a study on the temperature dependent PL and PL decay dynamics of lead bromide perovskite nanocrystals characterized by different types of A cations, surface ligands, and nanocrystal sizes. Throughout, we observe a single emission peak from cryogenic to ambient temperature. The PL decay dynamics are dominated by the surface passivation, and a post-synthesis ligand exchange with a quaternary ammonium bromide (QAB) results in a more stable passivation over a larger temperature range. The PL intensity is highest from 50K-250K, which indicates that the ligand binding competes with the thermal energy at ambient temperature. Despite the favorable PL dynamics of nanocrystals passivated with QAB ligands (monoexponential PL decay over a large temperature range, increased PL intensity and stability), the surface passivation still needs improvement toward increased emission intensity in nanocrystal films.
description: 19 pages, 5 figures
Additional file 5 of Using intervention mapping to develop an occupational advice intervention to aid return to work following hip and knee replacement in the United Kingdom
Creators: name: Coole, Carol
name: Baker, Paul
name: McDaid, Catriona
name: Drummond, Avril
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy

description: Additional file 5. Preliminary list of staff performance objectives.
O`ZBEKISTONDA ELEKTRON TIJORAT BITIMLARINI TUZISH VA ULARDA ISTE'MOLCHI HUQUQLARINI HIMOYA QILISH MASALALARI
Creators: name: Tursunaliyeva, Gulbahor
Publisher: name: Zenodo
Year: 2024

description: Ma`lumki, tijorat bitimlari global iqtisodiyotda eng muhim huquqiy va iqtisodiy jarayonlardan biri hisoblanadi. Shuningdek, bugungi kunda raqamli iqtisodiyot va internet texnologiyalarining rivojlanishi tijorat sohasiga sezilarli ta’sir ko’rsatgani holda tijorat bitimlarini elektron tarzda amalga oshirish ya`ni onlayn tarzda savdo-sotiq yuritish va xizmat ko’rsatish faoliyatining kengayishi, internet orqali tuziladigan tijorat bitimlarini keng miqyosda qo’llanilishiga olib kelmoqda.  Tijorat bitimlari an`anaviy usulda yoxud elektron tartibda tuzilishidan qat`iy nazar ularni to`g`ri tuzish, yuridik jihatdan to`liq asoslash va eng muhimi, iste’molchi huquqlarini ta’minlash muhim masalalardan biri hisoblanadi.
Knowledge and the Valuation of Public Goods and Experiential Commodities: Information Provision and Acquisition
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Public Economics
subject: behavioral economics
subject: contingent evaluation
subject: experiential commodities
subject: information
subject: knowledge
subject: public choice
subject: public goods
subject: nature conservation
subject: valuation

description: Provides empirical evidence of significant lack of relevant knowledge of some public goods and experiential commodities. It also analyses whether information provision about the attributes or characteristics of commodities is likely to result in individuals’ finding their ‘true’ preferences for these, and identifies the type and nature of information that should be conveyed to enable commodities to be appropriately valued. It also recognizes that sometimes commodities may contain attributes that individuals are unable to evaluate. Furthermore, individuals acquire and filter information about commodities. Factors influencing these activities require analysis. A cost-benefit analysis of information acquisition suggests that individuals are less likely to acquire information about public goods than private goods. Even in a world in which underlying meta-values of commodities are stationary, perceived values of commodities may show dynamic variation due to elicitation procedures and the provision of information about them, followed by crowding out and forgetting of information about the focal commodities. This possibility makes it difficult to determine the appropriate value to use in contingent valuation studies for policy purposes, and in similar approaches to determining individuals’ valuation of commodities. Policy consequences of this are considered.
Discovery of a 105 ms X-ray Pulsar in Kesteven 79: On the Nature of Compact Central Objects in Supernova Remnants
Creators: name: Gotthelf, E. V.
name: Halpern, J. P.
name: Seward, F. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of 105-ms X-ray pulsations from the compact central object (CCO) in the supernova remnant Kes 79 using data acquired with the Newton X-Ray Multi-Mirror Mission. Two observations of the pulsar taken 6 days apart yield an upper limit on its spin-down rate of dP/dt < 7E-14 s/s and no evidence for binary orbital motion. The implied energy loss rate is dE/dt < 2E36 ergs/s, surface magnetic field strength is B_p < 3E12 G, and spin-down age is t > 24 kyr. The latter exceeds the remnant's estimated age, suggesting that the pulsar was born spinning near its current period. The X-ray spectrum of PSR J1852+0040 is best characterized by a blackbody model of temperature kT_BB = 0.44 +/- 0.03 keV, radius R_BB approx. 0.9 km, and L_bol = 3.7E33 ergs/s at d = 7.1 kpc. The sinusoidal light curve is modulated with a pulsed fraction of >45%, suggestive of a small hot spot on the surface of the rotating neutron star. The lack of a discernible pulsar wind nebula is consistent with an interpretation of PSR J1852+0040 as a rotation-powered pulsar whose spin-down luminosity falls below the empirical threshold for generating bright wind nebulae, dE/dt_c approx. 4E36 ergs/s. The age discrepancy implies that its dE/dt has always been below dE/dt_c, perhaps a distinguishing property of the CCOs. Alternatively, the X-ray spectrum of PSR J1852+0040 suggests a low-luminosity AXP, but the weak inferred B_p field is incompatible with a magnetar theory of its X-ray luminosity. So far, we cannot exclude accretion from a fall-back disk. The ordinary spin parameters discovered from PSR J1852+0040 highlight the difficulty that existing theories of isolated neutron stars have in explaining the high luminosities and temperatures of CCO thermal X-ray spectra.
description: 8 pages, 4 Figues. Latex, emulateapj.sty. To appear in the Astrophysical Journal
Students' Evaluation of Teaching Effectiveness: What Surveys Tell and What They Do Not Tell
Creators: name: Alauddin, Mohammad
name: Tisdell, Clement A.
name: Alauddin, Mohammad
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Teaching/Communication/Extension/Profession
subject: Teaching effectiveness
subject: Instructor attributes
subject: Ordered probit
subject: Sensitivity analysis
subject: Underdetermination
subject: Pseudoscience

description: Employing student evaluation of teaching (SET) data on a range of undergraduate and postgraduate economics courses, this paper uses ordered probit analysis to (i) investigate how student’s perceptions of ‘teaching quality’ (TEVAL) are influenced by their perceptions of their instructor’s attributes relating including presentation and explanation of lecture material, and organization of the instruction process; (ii) identify differences in the sensitivity of perceived teaching quality scores to variations in the independent variables; (iii) investigate whether systematic differences in TEVAL scores occur for different levels of courses; and (iv) examine whether the SET data can provide a useful measure of teaching quality. It reveals that student’s perceptions of instructor’s improvement in organization, presentation and explanation, impact positively on students’ perceptions of teaching effectiveness. The converse appears to hold. The impacts of these factors vary between postgraduate and undergraduate programs as well as between levels within the undergraduate program. The pragmatic implications of SET procedures are discussed. It is argued that while they are simple to apply, there are dangers of using them to judge the quality of teaching. From a practical point of view, they are a poor indicator of teaching performance and in themselves provide no guidance to lecturers as to how to improve their teaching performance.
Non-ancient solution of the Ricci flow
Creators: name: Ruan, Qihua
name: Chen, Zhihua
Publisher: name: arXiv
Year: 2004
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 53C44,58J37,35B35

description: For any complete noncompact K$\ddot{a}$hler manifold with nonnegative and bounded holomorphic bisectional curvature,we provide the necessary and sufficient condition for non-ancient solution to the Ricci flow in this paper.
description: seven pages, latex file
’Thyng that was maad of auctours hem beforn’ : Lydgate’s Fall of Princes, its literary antecedents and successors
Creators: name: Lanz, Julie Marie
Publisher: name: University of British Columbia
Year: 2009

description: Despite frequent predictions that a renaissance in Lydgate studies is imminent, there is still a significant lack of critical work on Lydgate's massive oeuvre. The poet once accorded status equal to that of Chaucer and Gower now ranks a distant third in importance. My thesis aims to begin to remedy the critical neglect of Lydgate with a close study of his poem, "The Fall of Princes"; I particularly focus on Lydgate's presentation of questions of Fortune and individual culpability for misfortune. I begin with a brief history of Lydgate's critical reception. I then examine Lydgate's "Fall" in relation to its literary predecessors—notably Boccaccio, Chaucer and Gower—and to Lydgate's dual role as a Benedictine monk and propagandist for the Lancastrians. My third chapter shows how the competing influences that played upon Lydgate as he wrote the "Fall" result in a poem which is indisputably fragmented and inconsistent; however, I argue that Lydgate's own solution to the problem of Fortune is present in the text, in the form of numerous Boethian-influenced musings on the mutability of earthly life and the necessity of focussing on the stability of the next life. I then conclude with a brief look at how later authors used the "Fall" as a encyclopaedic-like source that could be co-opted to support various divergent views and arguments; I pay special attention to Peter Idley's "Instructions to his Son", Wynkyn de Worde's "The Proverbs of Lydgate", George Cavendish's "Metrical Visions", and William Baldwin's "Mirror for Magistrates". Ultimately, I argue that it is the success of these daughter-texts, particularly the "Mirror for Magistrate", that eliminates any need or desire for the "Fall" itself; after the publication of the "Mirror", the "Fall" quickly disappeared from circulation.
Monopole and quadrupole polarization effects on the alpha-particle description of $^{8}$Be
Creators: name: Sytcheva, A.
name: Arickx, F.
name: Broeckhove, J.
name: Vasilevsky, V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the effect of monopole and quadrupole modes on the elastic alpha-alpha resonance structure of $^{8}$Be. To this end we make a fully microscopic coupled channels calculation with three coupled channels, using the Algebraic Model. The continuum spectrum and wave functions are analyzed in terms of the individual channels to understand the nature of the resonances. It is shown that both monopole and quadrupole modes have a non-negligible effect on the resonances in the alpha-alpha continuum.
description: 20 pages, 4 figures. submitted to Phys.Rev.C
Semantic Social Networks: A New Approach To Scaling Digital Ethnography
Creators: name: Cottica, Alberto
name: Hassoun, Amelia
name: Vallet, Jason
name: Melançon, Guy
Publisher: name: Zenodo
Year: 2017
Subjects: digital ethnography, network science, health care

description: We propose a data-based approach to doing ethnographic research in a digital environment. It has three main components. First, it treats online conversational environments as human communities that ethnographers can engage with as they would in onsite fieldwork. Second, it represents those conversations and the fieldnotes made by researchers thereon in network form. e call these networks semantic social networks, as they incorporate information on social interaction and their meaning. They encode a map of the associations between key concepts as perceived by informants as a group. Third, it uses methods borrowed from network science to process these data. We present an application of this method to a large online conversation about community provision of health and social care, and discuss its potential for harnessing collective intelligence.
Forward doubly-virtual Compton scattering off the nucleon in chiral perturbation theory: II. Spin polarizabilities and moments of polarized structure functions
Creators: name: Alarcón, Jose Manuel
name: Hagelstein, Franziska
name: Lensky, Vadim
name: Pascalutsa, Vladimir
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We examine the polarized doubly-virtual Compton scattering (VVCS) off the nucleon using chiral perturbation theory ($χ$PT). The polarized VVCS contains a wealth of information on the spin structure of the nucleon which is relevant to the calculation of the two-photon-exchange effects in atomic spectroscopy and electron scattering. We report on a complete next-to-leading-order (NLO) calculation of the polarized VVCS amplitudes $S_1(ν, Q^2)$ and $S_2(ν, Q^2)$, and the corresponding polarized spin structure functions $g_1(x, Q^2)$ and $g_2(x,Q^2)$. Our results for the moments of polarized structure functions, partially related to different spin polarizabilities, are compared to other theoretical predictions and "data-driven" evaluations, as well as to the recent Jefferson Lab measurements. By expanding the results in powers of the inverse nucleon mass, we reproduce the known "heavy-baryon" expressions. This serves as a check of our calculation, as well as demonstrates the differences between the manifestly Lorentz-invariant baryon $χ$PT (B$χ$PT) and heavy-baryon (HB$χ$PT) frameworks.
description: 47 pages, 11 figures, 2 tables. Includes Mathematica notebook with the spin polarizabilities and moments of polarized structure functions as supplemental material. Replaced to match the published version
Bati Karadeniz Havzasinin Guney Bolumunde Akcakoca-Cide Aciklarinda Sikismali Tektonik Rejime Ait Yeni Bulgular
Creators: name: Onal, Kemal Mert
name: Demirbag, Emin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The earthquake occurred on October 15, 2016 (Ml=5.0) re-attracted attention to the tectonic activity of Western Black Sea Basin. The focal mechanism solution of this earthquake indicates reverse faulting, similar to the Bartin Earthquake of September 3, 1968 (MS=6.6), which is the strongest instrumentally recorded earthquake along the Turkish margin of Black Sea, and reveals another seismological evidence for the active thrusting in the region. In this study, the fault structures that considered to be formed by the effect of compressional tectonic regime and the structures formed by the activities of these faults beneath the shelf and slope areas between the region offshore Akcakoca-Cide at the southern part of the Western Black Sea Basin revealed by using marine seismic reflection data and the composite well log data. By means of the geological sections in previous geological studies, the land-offshore geological sections were prepared and findings about the continuation of the geological features from land to offshore in the study area were presented. These geological sections developed for the study area and the geological features recognized from the seismic migration sections, support the presence of the N-S directional compressional tectonic regime in Western Black Sea.
description: In Turkish with English Abstract, 25 pages, 16 Figures, 2 tables
Threshold Error Penalty for Fault Tolerant Computation with Nearest Neighbour Communication
Creators: name: Szkopek, T.
name: Boykin, P. O.
name: Fan, H.
name: Roychowdhury, V.
name: Yablonovitch, E.
name: Simms, G.
name: Gyure, M.
name: Fong, B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The error threshold for fault tolerant quantum computation with concatenated encoding of qubits is penalized by internal communication overhead. Many quantum computation proposals rely on nearest-neighbour communication, which requires excess gate operations. For a qubit stripe with a width of L+1 physical qubits implementing L levels of concatenation, we find that the error threshold of 2.1x10^-5 without any communication burden is reduced to 1.2x10^-7 when gate errors are the dominant source of error. This ~175X penalty in error threshold translates to an ~13X penalty in the amplitude and timing of gate operation control pulses.
description: minor correction
Economic Prospects for Small Island Economies, Particularly in the South Pacific, in a Globalising World
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2006
Subjects: subject: International Relations/Trade
subject: South Pacific Island nations
subject: Globalisation
subject: MIRAB
subject: Millenium Development Goals

description: After pointing out that small island economies are diverse in their economic situations and in their ability to benefit from globalisation, this article examines the actual situation of South Pacific island countries. It takes into account their size and its diversity; variations in their involvement in international trade; their geographic, ethnic and cultural differences; their international political associations; and differences in their degree of economic development. All of these factors, as well as their common attributes, influence the prospects of small Pacific Island countries for benefiting from economic globalisation. The question of whether the MIRAB characterisation of South Pacific Island Economies continues to be relevant is explored given that there has been increasing global support for the notion that nations should mainly rely on economic liberalisation, privatisation and globalisation for their economic development and become less aid dependent. Furthermore, the extent to which economic globalisation can be embraced to further the sustainable development of Pacific island countries is discussed.
Macdonald polynomials and extended Gelfand-Tsetlin graph
Creators: name: Olshanski, Grigori
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Using Okounkov's $q$-integral representation of Macdonald polynomials we construct an infinite sequence $Ω_1,Ω_2,Ω_3,\dots$ of countable sets linked by transition probabilities from $Ω_N$ to $Ω_{N-1}$ for each $N=2,3,\dots$. The elements of the sets $Ω_N$ are the vertices of the extended Gelfand-Tsetlin graph, and the transition probabilities depend on the two Macdonald parameters, $q$ and $t$. These data determine a family of Markov chains, and the main result is the description of their entrance boundaries. This work has its origin in asymptotic representation theory. In the subsequent paper, the main result is applied to large-$N$ limit transition in $(q,t)$-deformed $N$-particle beta-ensembles.
description: v2: minor revision, 56 pp., to appear in Selecta Mathematica
The Evolution and Classification of the Published Books of Clem Tisdell: A Brief Overview
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2007
Subjects: subject: Teaching/Communication/Extension/Profession
subject: Clem Tisdell
subject: bounded rationality
subject: microeconomics
subject: environmental economics
subject: tourism economic
subject: leisure studies
subject: Asian-Pacific countries

description: This paper outlines the evolution and classification of the major works (published books) of Clem Tisdell. To do this it divides these books into six categories. 1. Those focusing on knowledge limitations and, the presence of uncertainty (information economics). These develop microeconomic theory and apply it to policy issues. Subjects covered include the operation of market systems, the economics of decision-making, managerial economics, science and technology policy, bounded rationality, and evolutionary economics. 2. Textbooks on microeconomics and basic economics. 3. Ecological, natural resource and environmental economics. 4. Tourism economics and leisure studies. 5. Economic development in general and in particular, Asian-Pacific countries or regions. 6. Social policy, which includes coverage of gender issues, social issues associated with globalization, and the investigation of poverty and social disadvantage. The subject matter of several of these books overlaps and other classifications are also possible. Some of Tisdell’s books are co-authored and several are jointly edited. In addition, a collection of his articles (several of which are jointly authored) have not yet appeared in book form. Note that this overview is not intended to provide an in-depth analysis of recurring themes in Tisdell’s books and the development of these.
Local copying and local discrimination as a study for non-locality of a set
Creators: name: Owari, Masaki
name: Hayashi, Masahito
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We focus on the non-locality concerning local copying and local discrimination, especially for a set of orthogonal maximally entangled states in prime dimensional systems, as a study of non-locality of a set of states. As a result, for such a set, we completely characterize deterministic local copiability and show that local copying is more difficult than local discrimination. From these result, we can conclude that lack algebraic symmetry causes extra non-locality of a set.
description: This is an extended version of quant-ph/0411143
Spectro-polarimetric observations of the CIZA J2242.8+5301 northern radio relic: no evidence of high-frequency steepening
Creators: name: Loi, Francesca
name: Murgia, Matteo
name: Vacca, Valentina
name: Govoni, Federica
name: Melis, Andrea
name: Wittor, Denis
name: Beck, Rainer
name: Kierdorf, Maya
name: Bonafede, Annalisa
name: Boschin, Walter
name: Brienza, Marisa
name: Carretti, Ettore
name: Concu, Raimondo
name: Feretti, Luigina
name: Gastaldello, Fabio
name: Paladino, Rosita
name: Rajpurohit, Kamlesh
name: Serra, Paolo
name: Vazza, Franco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Observations of radio relics at very high frequency (>10 GHz) can help to understand how particles age and are (re-)accelerated in galaxy cluster outskirts and how magnetic fields are amplified in these environments. In this work, we present new single-dish 18.6 GHz Sardinia Radio Telescope and 14.25 GHz Effelsberg observations of the well known northern radio relic of CIZA J2242.8+5301. We detected the relic which shows a length of $\sim$1.8 Mpc and a flux density equal to $\rm S_{14.25\,GHz}=(9.5\pm3.9)\,mJy$ and $\rm S_{18.6\,GHz}=(7.67\pm0.90)\,mJy$ at 14.25 GHz and 18.6 GHz respectively. The resulting best-fit model of the relic spectrum from 145 MHz to 18.6 GHz is a power-law spectrum with spectral index $α=1.12\pm0.03$: no evidence of steepening has been found in the new data presented in this work. For the first time, polarisation properties have been derived at 18.6 GHz, revealing an averaged polarisation fraction of $\sim40\%$ and a magnetic field aligned with the 'filaments' or 'sheets' of the relic.
description: 10 pages, 8 figures
FUSE Observations of Nebular O VI Emission from NGC 6543
Creators: name: Gruendl, R. A.
name: Chu, Y. -H.
name: Guerrero, M. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: NGC 6543 is one of the few planetary nebulae (PNe) whose X-ray emission has been shown to be extended and originate from hot interior gas. Using FUSE observations we have now detected nebular O VI emission from NGC 6543. Its central star, with an effective temperature of ~50,000 K, is too cool to photoionize O V, so the O VI ions must have been produced by thermal collisions at the interface between the hot interior gas and the cool nebular shell. We modeled the O VI emission incorporating thermal conduction, but find that simplistic assumptions for the AGB and fast wind mass loss rates overproduce X-ray emission and O VI emission. We have therefore adopted the pressure of the interior hot gas for the interface layer and find that expected O VI emission to be comparable to the observations.
description: 4 pages, 4 figures, 1 table, using emulateapj.cls style. Accepted for publication in ApJ Letters
Demand for Pasture-Raised Livestock Products: Results from Michigan Retail Surveys
Creators: name: Conner, David S.
name: Oppenheim, Diana
name: Conner, David S.
name: Oppenheim, Diana
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Demand and Price Analysis
subject: Livestock Production/Industries
subject: animal welfare
subject: consumer demand
subject: pasture-raised livestock products
subject: sustainability
subject: Tobit
subject: willingness to pay

description: Pasture-raised livestock production offers opportunity for product differentiation and enhanced sustainability. Shopper surveys at three Michigan retail locations measured consumers’ attitudes and beliefs regarding pasture-raised livestock products, and willingness to pay for pasture-raised milk and beef. The shoppers associate pasture-raised products with attributes important to purchase decisions. The shoppers express willingness to pay, on average, about 35% more for pasture-raised milk and beef. Informational messages appear to have no effect on these responses. We suggest pasture-raised is a viable marketing strategy and recommend premium pricing strategies and promotion based on verifiable health benefits.
Data for Polarization in Charmless B -> phi K^*: A Signal for New Physics?
Creators: name: Das, Prasanta Kumar
name: Yang, Kwei-Chou
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The recent observations of sizable transverse fractions of B-> phi K* are strongly contrary to the Standard Model expectation. We analyze all possible new-physics four-quark operators. We find that two classes of new-physics operators could offer resolutions to the B-> phi K* polarization anomaly. The (1-γ_5)\otimes (1-γ_5) and σ(1-γ_5)\otimes σ(1-γ_5) operators in the first class contribute to different helicity amplitudes as H{00}: H{--}: H{++} ~ O(1/mb):O(1):O(1/mb^2), while the contributions arising from (1+γ_5)\otimes (1+γ_5) and σ(1+γ_5)\otimes σ(1+γ_5) operators in the second class to various helicity amplitudes are given as H{00}: H{--}: H{++} ~ O(1/mb):O(1/mb^2):O(1). For each class of new physics, we find that all new physics effects can be lumped into a single parameter. Two possible experimental results of polarization phases, \arg(A_\perp)- \arg(A_\parallel) ~ πor 0, originating from the phase ambiguity in data, could be separately accounted for by our two new-physics scenarios: (i) the first scenario with the first class new-physics operators, and (ii) the second scenario with the second class new-physics operators. The consistency between the data and the new physics analysis, suggests a small new-physics weak phase, together with a large strong phase. We obtain sizable transversely polarized amplitudes Λ_{\parallel\parallel} + Λ_{\perp\perp} = Λ_{00}. In the second scenario, we find Λ_{\parallel\parallel} ~ Λ_{\perp\perp}, while, in the first scenario, we obtain Λ_{\parallel\parallel} ~ Λ_{\perp\perp}/2. We discuss the impact of the new-physics weak phase on observations.
description: 24 pages, 1 figure, 6 tables; some numerical results corrected; to appear in Phys. Rev. D
Identifying Abnormal Returns to Food and Agribusiness Stocks on Key Farm Policy Legislative Dates
Creators: name: Detre, Joshua D.
name: Gunderson, Michael A.
name: Briggeman, Brian C.
name: Detre, Joshua D.
name: Gunderson, Michael A.
name: Briggeman, Brian C.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: agribusiness stock values
subject: event study
subject: farm bill

description: The efficient market hypothesis would suggest that stock prices incorporate the information revealed in the public process of creating legislation as the debate occurred. Thus, there should be no abnormal returns to agribusiness stocks on key legislative dates when drafting and altering the farm bill. Using an event study methodology, key legislative dates are tested for abnormal returns to firms that supply inputs to or process outputs of agricultural producers. Typically, agribusinesses react on the date legislation emerges from the joint House and Senate conference committee.
D-branes in a Big Bang/Big Crunch Universe: Nappi-Witten Gauged WZW Model
Creators: name: Hikida, Yasuaki
name: Nayak, Rashmi R.
name: Panigrahi, Kamal L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study D-branes in the Nappi-Witten model, which is a gauged WZW model based on (SL(2,R) x SU(2)) / (U(1) x U(1)). The model describes a four dimensional space-time consisting of cosmological regions with big bang/big crunch singularities and static regions with closed time-like curves. The aim of this paper is to investigate by D-brane probes whether there are pathologies associated with the cosmological singularities and the closed time-like curves. We first classify D-branes in a group theoretical way, and then examine DBI actions for effective theories on the D-branes. In particular, we show that D-brane metric from the DBI action does not include singularities, and wave functions on the D-branes are well behaved even in the presence of closed time-like curves.
description: 50 pages, 2 figures, minor changes
Derived Demand for Cattle Feeding Inputs
Creators: name: Mathews, Kenneth H.
name: Arnade, Carlos Anthony
name: Jones, Keithly G.
name: Mathews, Kenneth H.
name: Arnade, Carlos Anthony
name: Jones, Keithly G.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Demand and Price Analysis
subject: Livestock Production/Industries
subject: cattle feeding
subject: derived demand
subject: elasticity
subject: feeder cattle
subject: generalized McFadden cost function

description: Derived demand relationships among four weight categories of feeder cattle entering Texas feedlots and their feed consumed are examined using a generalized McFadden dual cost function. Results demonstrate systematic differences in demand relationships among different weight categories. Positive cross-price elasticities among the three heaviest weight categories are consistent with input substitution among weight categories and consistent with objective functions associated with optimal placement weight. Anomalies in the form of negative cross-price elasticities between weight categories provide evidence for an alternative objective function associated with longer term feeding of light-weight feeder cattle. Results also demonstrate seasonality differences across weight categories.
Hedging Break-Even Biodiesel Production Costs Using Soybean Oil Futures
Creators: name: Graf, Johannes
name: McKenzie, Andrew M.
name: Popp, Michael P.
name: Graf, Johannes
name: McKenzie, Andrew M.
name: Popp, Michael P.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Demand and Price Analysis
subject: Environmental Economics and Policy
subject: biodiesel
subject: hedging
subject: poultry fat
subject: soybean oil

description: The effectiveness of hedging volatile input prices for biodiesel producers is examined over one- to eight-week time horizons. Results reveal that hedging break-even soybean costs with soybean oil futures offers significant reductions in input price risk. The degree of risk reduction is dependent upon type of hedge, naïve or risk-minimizing, and upon time horizon. In contrast, cross-hedging break-even poultry fat costs with soybean oil futures failed to reduce input price risk.
Open nonradiative cavities as millimeter wave single-mode resonators
Creators: name: Annino, G.
name: Cassettari, M.
name: Martinelli, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Open single-mode metallic cavities operating in nonradiative configurations are proposed and demonstrated. Starting from well-known dielectric resonators, possible nonradiative cavities have been established; their behavior on the fundamental TE011 mode has been predicted on the basis of general considerations. As a result, very efficient confinement properties are expected for a wide variety of open structures having rotational invariance. Test cavities realized having in mind practical millimeter wave constraints have been characterized at microwave frequencies. The field distribution of some relevant configurations has been modeled by means of a finite-element numerical method. The obtained results confirm the expected high performances on widely open configurations. A possible excitation of the proposed resonators exploiting their nonradiative character is discussed, and the resulting overall ease of realization enlightened in view of millimeter wave employments.
description: 18 pages, 10 figures. Extended version including numerical modelings and a theoretical appendix. Original version published on Rev. Sci. Instrum
Super-Poissonian shot noise in the resonant tunneling due to coupling with a localized level
Creators: name: Djuric, Ivana
name: Dong, Bing
name: Cui, H. L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report our studies of the shot noise spectrum in tunneling through an interacting quantum dot when an additional single-level quantum dot without tunnel coupling to leads is coherently side-connected to it. We show that the zero-frequency shot noise could reach a super-Poissonian value for appropriate ratios between dot-dot hoppings and dot-lead couplings, but the current is independent on the hopping. Moreover, the frequency spectrum of shot noise shows an obvious peak at the Rabi frequency, which is controllable by tuning the dot-lead couplings.
description: 3 pages, 3 figures, Appl. Phys. Lett.(in press)
Coccinula Dobzhansky. Zoologischer Anziger 1925
Creators: name: POORANI, J.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Coccinellidae
Coccinula

description: Genus Coccinula Dobzhansky
Coccinula Dobzhansky, 1925: 245.
Type species: Coccinula quatuordecimpustulata Linnaeus, 1758: 368, by original designation?
Notes. In view of the non-availability of specimens for detailed studies, a generic diagnosis is not given for Coccinula. Tomaszewska et al. (2021) included it in the Coccinella- group of genera and found Coccinula had a close morphological relationship with the Old World genera Anisosticta, Bulaea, and Tytthaspis.
description: Published as part of POORANI, J., 2023, An illustrated guide to lady beetles (Coleoptera: Coccinellidae) of the Indian Subcontinent. Part 1. Tribe Coccinellini, pp. 1-307 in Zootaxa 5332 (1) on page 94, DOI: 10.11646/zootaxa.5332.1.1, http://zenodo.org/record/8261502
Exact uncertainty approach in quantum mechanics and quantum gravity
Creators: name: Hall, Michael J. W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The assumption that an ensemble of classical particles is subject to nonclassical momentum fluctuations, with the fluctuation uncertainty fully determined by the position uncertainty, has been shown to lead from the classical equations of motion to the Schroedinger equation. This 'exact uncertainty' approach may be generalised to ensembles of gravitational fields, where nonclassical fluctuations are added to the field momentum densities, of a magnitude determined by the uncertainty in the metric tensor components. In this way one obtains the Wheeler-DeWitt equation of quantum gravity, with the added bonus of a uniquely specified operator ordering. No a priori assumptions are required concerning the existence of wavefunctions, Hilbert spaces, Planck's constant, linear operators, etc. Thus this approach has greater transparency than the usual canonical approach, particularly in regard to the connections between quantum and classical ensembles. Conceptual foundations and advantages are emphasised.
description: Latex, 14 pages; plenary talk presented at the 4th Australasian Conference on General Relativity and Gravitation (Melbourne, January 7-9, 2004); Proceedings to appear in GRG