cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Excitons in boron nitride nanotubes: dimensionality effects
Creators: name: Wirtz, Ludger
name: Marini, Andrea
name: Rubio, Angel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that the optical absorption spectra of boron nitride (BN) nanotubes are dominated by strongly bound excitons. Our first-principles calculations indicate that the binding energy for the first and dominant excitonic peak depends sensitively on the dimensionality of the system, varying from 0.7 eV in bulk hexagonal BN via 2.1 eV in the single sheet of BN to more than 3 eV in the hypothetical (2,2) tube. The strongly localized nature of this exciton dictates the fast convergence of its binding energy with increasing tube diameter towards the sheet value. The absolute position of the first excitonic peak is almost independent of the tube radius and system dimensionality. This provides an explanation for the observed "optical gap" constancy for different tubes and bulk hBN [R. Arenal et al., to appear in Phys. Rev. Lett. (2005)].
description: 5 pages, 2 figures
Aspects of Bose-Einstein condensation in a charged boson system over the dielectric surface
Creators: name: Lukin, I. V.
name: Sotnikov, A. G.
name: Slyusarenko, Yu. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study theoretically a gas consisting of charged bosons (ions) over the flat dielectric surface at low temperatures and its tendency to form a state with a Bose-Einstein condensate. For the stability of a system, an additional external electric field, which keeps charges at the dielectric surface, is introduced. The formalism is developed in the framework of a self-consistent-field approach, which combines the quasiclassical description in terms of the Wigner distribution functions and the quantum-mechanical approach by employing the Gross-Pitaevskii equation. We predict a formation of the state with a Bose-Einstein condensate and determine the near-critical physical characteristics of the system. It is shown that the thermal and condensate components become spatially separated under these conditions. We discuss the limitations of the developed semiclassical approach and prospects for the pure quantum-mechanical treatment of the problem.
description: 9 pages, 6 figures
A extensão universitária como instrumento de promoção ciência cidadã: o caso da Universidade Federal do Rio de Janeiro
Creators: name: Zattar, Marianna
name: Oliveira Sá, Nysia
name: Peniche, Tamiris
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada na sessão “O meu Póster em 1 minuto”, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
[Brev til DKNVS]
Creators: name: Gunnerus, Johan Ernst
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1772

description: Ber arveprinsen om å bli preses for VS
description: Kopi, utkast til brev. Polydoc nr. 1: 597.
SU(2/1) superchiral self-duality: a new quantum, algebraic and geometric paradigm to describe the electroweak interactions
Creators: name: Thierry-Mieg, Jean
name: Jarvis, Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose an extension of the Yang-Mills paradigm from Lie algebras to internal chiral superalgebras. We replace the Lie algebra-valued connection one-form $A$, by a superalgebra-valued polyform $\widetilde{A}$ mixing exterior-forms of all degrees and satisfying the chiral self-duality condition $\widetilde{A} = {}^*\widetilde{A} \,χ$, where $χ$ denotes the superalgebra grading operator. This superconnection contains Yang-Mills vectors valued in the even Lie subalgebra, together with scalars and self-dual tensors valued in the odd module, all coupling only to the charge parity CP-positive Fermions. The Fermion quantum loops then induce the usual Yang-Mills-scalar Lagrangian, the self-dual Avdeev-Chizhov propagator of the tensors, plus a new vector-scalar-tensor vertex and several quartic terms which match the geometric definition of the supercurvature. Applied to the $SU(2/1)$ Lie-Kac simple superalgebra, which naturally classifies all the elementary particles, the resulting quantum field theory is anomaly-free and the interactions are governed by the super-Killing metric and by the structure constants of the superalgebra.
description: 22 pages (14 pages + 5 appendices + 21 ref) 18 Feynman diagrams. This is the version published in JHEP. Relative to version 1, we just fixed some typos, some wording, and added a reference
AN OPTION PERSPECTIVE ON GENERATING AND MAINTAINING PLANT VARIETY RIGHTS IN CHINA
Creators: name: Koo, Bonwoo
name: Pardey, Philip G.
name: Qian, Keming
name: Zhang, Yi
name: Koo, Bonwoo
name: Pardey, Philip G.
name: Qian, Keming
name: Zhang, Yi
Publisher: name: Unknown
Year: 2003
Subjects: subject: Resource /Energy Economics and Policy
subject: intellectual property rights
subject: crop improvement
subject: option value
subject: seed markets

description: Notwithstanding the ambiguous research and productivity promoting effects of plant variety protections (PVPs), even in developed countries, many developing countries have adopted PVPs in the past few years, in part to comply with their Trade-Related Aspects of Intellectual Property Rights (TRIPS) obligations. Seeking and maintaining PVPs reserves options to an expected revenue stream from the future sale of protected varieties, the value of which varies for a host of reasons. In this paper we empirically examine the pattern of plant variety protection applications in China since its PVP laws were first introduced in 1997. We place those PVP rights in the context of China's present and likely future seed markets to identify the economic incentives and institutional influences on decisions to develop and apply for varietal rights.
Zero-dimensional analogue of the global gauge anomaly
Creators: name: So, Hiroto
name: Suzuki, Hiroshi
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: A zero-dimensional analogue of Witten's global gauge anomaly is considered. For example, a zero-dimensional reduction of the two-dimensional $\SO(2N)$ Yang-Mills theory with a single Majorana-Weyl fermion in the fundamental representation suffers from this anomaly. Another example is a zero-dimensional reduction of two- and three-dimensional $\SU(2N_c)$ Yang-Mills theories which couple to a single Majorana fermion in the adjoint representation. In this case, any expectation value is either indeterminate or infinite.
description: 6 pages, uses PTPTeX.cls, the final version to appear in Prog. Theor. Phys
Vacuum structure of QCD in an effective Langrangian approach
Creators: name: Fugleberg, Todd Darwin
Publisher: name: University of British Columbia
Year: 2009

description: The vacuum structure of QCD is studied using an anomalous effective Lagrangian approach. This approach makes it possible to determine how physical observables depend on the strong CP violation parameter, θ. The θ -dependence of QCD and the phenomenology of the light pseudoscalar mesons in this theory are illustrated. The vacuum structure of QCD is shown to be quite complex with the prediction of a number of different types of nontrivial vacuum states. Two specific examples of nontrivial vacuum states are analysed in more detail. The decay rate of a metastable vacuum state for the θ = 0 case is nonperturbatively calculated in both the zero and high temperature limits. The formation of a nontrivial vacuum state in heavy ion collisions is predicted in a simplified numerical model. These results have implications for the study of the evolution of the early universe near the QCD phase transition and may be tested experimentally very soon in heavy ion collision experiments.
Continuous functors as a model for the equivariant stable homotopy category
Creators: name: Blumberg, Andrew
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55P42, 55P47, 55P91

description: In this paper, we investigate the properties of the category of equivariant diagram spectra indexed on the category W_G of based G-spaces homeomorphic to finite G-CW-complexes for a compact Lie group G. Using the machinery of Mandell, May, Schwede, and Shipley, we show that there is a "stable model structure" on this category of diagram spectra which admits a monoidal Quillen equivalence to the category of orthogonal G-spectra. We construct a second "absolute stable model structure" which is Quillen equivalent to the "stable model structure". Our main result is a concrete identification of the fibrant objects in the absolute stable model structure. There is a model-theoretic identification of the fibrant continuous functors in the absolute stable model structure as functors Z such that for A in W_G the collection {Z(A smash S^W)} form an Omega-G-prespectrum as W varies over the universe U. We show that a functor is fibrant if and only if it takes G-homotopy pushouts to G-homotopy pullbacks and is suitably compatible with equivariant Atiyah duality for orbit spaces G/H_+ which embed in U. Our motivation for this work is the development of a recognition principle for equivariant infinite loop spaces.
description: This is the version published by Algebraic & Geometric Topology on 8 December 2006
[Brev til Johan Ernst Gunnerus]
Creators: name: Guldberg, Ove Høegh
name: Gunnerus, Johan Ernst
Publisher: name: Unknown
Year: 1772

description: Takker for innvalg og viser til vedlegg, dvs. arveprins Frederiks brev til VS samme dag
description: Ikke tr. i Dahl. Polydoc nr. 1: 454. Polydoc nr. 2: 102.
On cusps and flat tops
Creators: name: Dobbs, Neil
Publisher: name: arXiv
Year: 2008
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37A05, 37E05

description: We develop non-invertible Pesin theory for a new class of maps called cusp maps. These maps may have unbounded derivative, but nevertheless verify a property analogous to $C^{1+ε}$. We do not require the critical points to verify a non-flatness condition, so the results are applicable to $C^{1+ε}$ maps with flat critical points. If the critical points are too flat, then no absolutely continuous invariant probability measure can exist. This generalises a result of Benedicks and Misiurewicz.
description: 32 pages, some revisions from the previous version (thanks again, referee!), but the substance remains the same. This version is from Dec 2012
Channel Prediction for mmWave Ground-to-Air Propagation under Blockage
Creators: name: Khawaja, Wahab
name: Ozdemir, Ozgur
name: Guvenc, Ismail
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Ground-to-air (GA) communication using unmanned aerial vehicles (UAVs) has gained popularity in recent years and is expected to be part of 5G networks and beyond. However, the GA links are susceptible to frequent blockages at millimeter wave (mmWave) frequencies. During a link blockage, the channel information cannot be obtained reliably. In this work, we provide a novel method of channel prediction during the GA link blockage at 28 GHz. In our approach, the multipath components (MPCs) along a UAV flight trajectory are arranged into independent path bins based on the minimum Euclidean distance among the channel parameters of the MPCs. After the arrangement, the channel parameters of the MPCs in individual path bins are forecasted during the blockage. An autoregressive model is used for forecasting. The results obtained from ray tracing simulations indicate a close match between the actual and the predicted mmWave channel.
description: Now the updated manuscript has been accepted for publication in IEEE Antenna and Wireless Propagation Letters
iGibson 1.0: a Simulation Environment for Interactive Tasks in Large Realistic Scenes
Creators: name: Shen, Bokui
name: Xia, Fei
name: Li, Chengshu
name: Martín-Martín, Roberto
name: Fan, Linxi
name: Wang, Guanzhi
name: Pérez-D'Arpino, Claudia
name: Buch, Shyamal
name: Srivastava, Sanjana
name: Tchapmi, Lyne P.
name: Tchapmi, Micael E.
name: Vainio, Kent
name: Wong, Josiah
name: Fei-Fei, Li
name: Savarese, Silvio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: We present iGibson 1.0, a novel simulation environment to develop robotic solutions for interactive tasks in large-scale realistic scenes. Our environment contains 15 fully interactive home-sized scenes with 108 rooms populated with rigid and articulated objects. The scenes are replicas of real-world homes, with distribution and the layout of objects aligned to those of the real world. iGibson 1.0 integrates several key features to facilitate the study of interactive tasks: i) generation of high-quality virtual sensor signals (RGB, depth, segmentation, LiDAR, flow and so on), ii) domain randomization to change the materials of the objects (both visual and physical) and/or their shapes, iii) integrated sampling-based motion planners to generate collision-free trajectories for robot bases and arms, and iv) intuitive human-iGibson interface that enables efficient collection of human demonstrations. Through experiments, we show that the full interactivity of the scenes enables agents to learn useful visual representations that accelerate the training of downstream manipulation tasks. We also show that iGibson 1.0 features enable the generalization of navigation agents, and that the human-iGibson interface and integrated motion planners facilitate efficient imitation learning of human demonstrated (mobile) manipulation behaviors. iGibson 1.0 is open-source, equipped with comprehensive examples and documentation. For more information, visit our project website: http://svl.stanford.edu/igibson/
The Way to Realize the Morality-establishing and Talent-cultivating Responsibilities of Postgraduate Tutors in Agricultural and Forestry Universities
Creators: name: WANG Man
name: ZHANG Fengjun
name: WANG Man
name: ZHANG Fengjun
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Agricultural and forestry colleges and universities, Postgraduate tutor, Establishing morality, Cultivating talent, Realization path

description: With the continuous expansion of postgraduate enrollment in China, the phenomenon of postgraduate tutors’ experiencing dereliction of duties, morality and behavior in colleges and universities has become prominent in recent years. It has repeatedly attracted widespread attention from the whole society, producing a negative impact on postgraduate education. Agricultural and forestry universities take root at the grassroots level, serve agriculture, rural areas and farmers, have simple and practical education characteristics, and have made positive adjustments to mutual assistance between teachers and students, teachers’ self-examination and regulatory system. This article analyzes the reasons for the current unethical and dishonest behaviors of postgraduate tutors in colleges and universities from the perspective of postgraduate tutors, and puts forward the implementation mechanism of the morality-establishing and talent-cultivating responsibilities of postgraduate tutors in agricultural and forestry universities combined with the school-running characteristics and practical experience of agricultural and forestry universities, so as to provide a reference for the construction of postgraduate tutor teams in colleges and universities.
Social Science Knowledge and Induced Institutional Innovation: An Institutional Design Perspective
Creators: name: Ruttan, Vernon W.
name: Ruttan, Vernon W.
Publisher: name: Unknown
Year: 2005
Subjects: Institutional and Behavioral Economics

description: In this paper I advance a model in which institutional innovation is induced by changes in resource endowments, cultural endowments and technical change. I also introduce the role of advances in social science knowledge as a source of institutional innovation. The sources of institutional innovation are illustrated by changes in land tenure and labor relations in Philippine agriculture, by the development of institutional design principles based on studies of small scale resource management, and by the transition from command and control to market based systems of resource management at the national level in the United States. In a final section I elaborate a pattern model that maps the general equilibrium relationship among change in resource endowments, cultural endowments, technology and institutions.
A refined position catalog of the Swift XRT afterglows
Creators: name: Moretti, A.
name: Perri, M.
name: Capalbi, M.
name: Angelini, L.
name: Hill, J. E.
name: Campana, S.
name: Burrows, D. N.
name: Osborne, J. P.
name: Tagliaferri, G.
name: Cusumano, G.
name: Giommi, P.
name: Romano, P.
name: Mineo, T.
name: Kennea, J.
name: Morris, D.
name: Nousek, J.
name: Pagani, C.
name: Racusin, J.
name: Abbey, A. F.
name: Beardmore, A. P.
name: Godet, O.
name: Goad, M. R.
name: Page, K. L.
name: Wells, A. A.
name: Chincarini, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a catalogue of refined positions of 68 gamma ray burst (GRB) afterglows observed by the Swift X-ray Telescope (XRT) from the launch up to 2005 Oct 16. This is a result of the refinement of the XRT boresight calibration. We tested this correction by means of a systematic study of a large sample of X-ray sources observed by XRT with well established optical counterparts. We found that we can reduce the systematic error radius of the measurements by a factor of two, from 6.5" to 3.2" (90% of confidence). We corrected all the positions of the afterglows observed by XRT in the first 11 months of the Swift mission. This is particularly important for the 37 X-ray afterglows without optical counterpart. Optical follow-up of dark GRBs, in fact, will be more efficient with the use of the more accurate XRT positions.
description: 4 pages, 4 figures, 1 table ; accepted for publication in A&A Letters. The revised version contains updated positions
[Brev til Johan Ernst Gunnerus]
Creators: name: Guldberg, Ove Høegh
name: Gunnerus, Johan Ernst
Publisher: name: Unknown
Year: 1772

description: Guldberg forsikrer Gunnerus at kongen ser med velvilje på VS
description: Ikke tr. i Dahl. Polydoc nr. 1: 456. Polydoc nr. 2: 104.
TECHNICAL AND STRUCTURAL DEVELOPMENTS IN SPAIN'S DAIRY SECTOR: IMPLICATIONS FOR ENTRY INTO THE COMMON MARKET
Creators: name: Herruzo, A.C.
name: Hammond, Jerome W.
name: Herruzo, A.C.
name: Hammond, Jerome W.
Publisher: name: Unknown
Year: 1988
Subjects: Livestock Production/Industries

description: This paper outlines the major trends experienced by Spain's dairy sector in recent decades. It offers tentative explanations of the factors accounting for these observed trends. Implications for the nation's dairy farm sector from entry into the EEC are examined. The paper concludes with some considerations on the possibilities to carry out the necessary technical and structural reforms needed to achieve a viable dairy sector before full application of the mechanisms for the Community's dairy policy takes place.
Complex zeros of real ergodic eigenfunctions
Creators: name: Zelditch, Steve
Publisher: name: arXiv
Year: 2005
Subjects: subject: Spectral Theory (math.SP)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: We determine the limit distribution (as $λ\to \infty$) of complex zeros for holomorphic continuations $ϕ_λ^{\C}$ to Grauert tubes of real eigenfunctions of the Laplacian on a real analytic compact Riemannian manifold $(M, g)$ with ergodic geodesic flow. If $\{ϕ_{j_k} \}$ is an ergodic sequence of eigenfunctions, we prove the weak limit formula $\frac{1}{λ_j} [Z_{ϕ_{j_k}^{\C}}] \to \frac{i}π \bar{\partial} {\partial} |ξ|_g$, where $ [Z_{ϕ_{j_k}^{\C}}]$ is the current of integration over the complex zeros and where $\bar{\partial}$ is with respect to the adapted complex structure of Lempert-Szöke and Guillemin-Stenzel.
description: Added some examples and references. Also added a new Corollary, and corrected some typos
Understanding Q-Balls Beyond the Thin-Wall Limit
Creators: name: Heeck, Julian
name: Rajaraman, Arvind
name: Riley, Rebecca
name: Verhaaren, Christopher B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Complex scalar fields charged under a global U(1) symmetry can admit non-topological soliton configurations called Q-balls which are stable against decay into individual particles or smaller Q-balls. These Q-balls are interesting objects within quantum field theory, but are also of phenomenological interest in several cosmological and astrophysical contexts. The Q-ball profiles are determined by a nonlinear differential equation, and so generally require solution by numerical methods. In this work, we derive analytical approximations for the Q-ball profile in a polynomial potential and obtain simple expressions for the important Q-ball properties of charge, energy, and radius. These results improve significantly on the often-used thin-wall approximation and make it possible to describe Q-balls to excellent precision without having to solve the underlying differential equation.
description: 26 pages, v2: matches published version; v3: fixed typo in Eq.(3)
AGRICULTURAL, AGRIBUSINESS, AND INTERNATIONAL MARKETING COURSES IN UNDERGRADUATE CURRICULA: ISSUES AND IDEAS
Creators: name: Wysocki, Allen F.
name: Fairchild, Gary F.
name: Weldon, Richard N.
name: Biere, Arlo W.
name: Fulton, Joan R.
name: McIntosh, Christopher S.
name: Wysocki, Allen F.
name: Fairchild, Gary F.
name: Weldon, Richard N.
name: Biere, Arlo W.
name: Fulton, Joan R.
name: McIntosh, Christopher S.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Teaching/Communication/Extension/Profession
subject: agribusiness curricula
subject: agricultural marketing
subject: marketing courses
subject: marketing curricula

description: Agricultural marketing courses cover a broad spectrum of topics and issues. Undergraduate committees, program coordinators, and marketing-oriented faculty struggle with the appropriate number and content of marketing course offerings. Curricula issues are discussed from the perspectives of three agricultural economics departments. Size, expertise, interests, and pedagogic philosophy assist in determining the number, mix, and content of courses. Solving these problems includes modulization and increasing depth or breadth, to reflect the changing marketing system and student needs. Educators must continually look outward at the changing food system and inward to their marketing curriculum to assess needs and implement changes as they are warranted.
On the origin of cold dark matter halo density profiles
Creators: name: Lu, Yu
name: Mo, H. J.
name: Katz, Neal
name: Weinberg, Martin D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: N-body simulations predict that CDM halo-assembly occurs in two phases: 1) a fast accretion phase with a rapidly deepening potential well; and 2) a slow accretion phase characterised by a gentle addition of mass to the outer halo with little change in the inner potential well. We demonstrate, using one-dimensional simulations, that this two-phase accretion leads to CDM halos of the NFW form and provides physical insight into the properties of the mass accretion history that influence the final profile. Assuming that the velocities of CDM particles are effectively isotropised by fluctuations in the gravitational potential during the fast accretion phase, we show that gravitational collapse in this phase leads to an inner profile rho(r) ~ r^{-1}. Slow accretion onto an established potential well leads to an outer profile with rho(r) ~ r^{-3}. The concentration of a halo is determined by the fraction of mass that is accreted during the fast accretion phase. Using an ensemble of realistic mass accretion histories, we show that the model predictions of the dependence of halo concentration on halo formation time, and hence the dependence of halo concentration on halo mass, and the distribution of halo concentrations all match those found in cosmological N-body simulations. Using a simple analytic model that captures much of the important physics we show that the inner r^{-1} profile of CDM halos is a natural result of hierarchical mass assembly with a initial phase of rapid accretion.
description: Accepted for publication in MNRAS, references added, 11 pages, 8 figures
INFORMATION AND THE ADOPTION OF PRECISION FARMING TECHNOLOGIES
Creators: name: McBride, William D.
name: Daberkow, Stan G.
name: McBride, William D.
name: Daberkow, Stan G.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Farm Management
subject: Research and Development/Tech Change/Emerging Technologies
subject: information sources
subject: logit analysis
subject: precision farming
subject: self-selection bias
subject: technology adoption

description: Precision farming technologies have been commercially available since the early 1990s, but the pace of adoption among U.S. farmers has been modest. This study examines the relationship between the adoption of diagnostic and application techniques of precision farming and sources of information available to farmers about precision farming. The model used in the analysis accounts for sources of self-selection in the adoption process that could bias the results. Results indicate interpersonal information sources have increased adoption relative to information from the mass media, and the private sector has been the driving force behind the diffusion of precision farming. Information from crop consultants and input suppliers has had the greatest impact on the adoption of precision farming technologies. These sources likely provide the greatest technical expertise about precision farming, and thus are better equipped to ease the significant human capital requirement of precision farming technologies.
Further Evidence for a Merger Origin for the Thick Disk: Galactic Stars Along Lines-of-sight to Dwarf Spheroidal Galaxies
Creators: name: Wyse, Rosemary F. G.
name: Gilmore, Gerard
name: Norris, John E.
name: Wilkinson, M. I.
name: Kleyna, Jan T.
name: Koch, A.
name: Evans, N. W.
name: Grebel, E. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The history of the Milky Way Galaxy is written in the properties of its stellar populations. Here we analyse stars observed as part of surveys of local dwarf spheroidal galaxies, but which from their kinematics are highly probable to be non-members. The selection function -- designed to target metal-poor giants in the dwarf galaxies, at distances of ~100kpc -- includes F-M dwarfs in the Milky Way, at distances of up to several kpc. Thestars whose motions are analysed here lie in the cardinal directions of Galactic longitude l ~ 270 and l ~ 90, where the radial velocity is sensitive to the orbital rotational velocity. We demonstrate that the faint F/G stars contain a significant population with V_phi ~ 100km/s, similar to that found by a targeted, but limited in areal coverage, survey of thick-disk/halo stars by Gilmore, Wyse & Norris (2002). This value of mean orbital rotation does not match either the canonical thick disk or the stellar halo. We argue that this population, detected at both l ~ 270 and l ~ 90, has the expected properties of `satellite debris' in the thick-disk/halo interface, which we interpret as remnants of the merger that heated a pre-existing thin disk to form the thick disk.
description: Accepted, Astrophysical Journal Letters
HEDGING SPOT CORN: AN EXAMINATION OF THE MINNEAPOLIS GRAIN EXCHANGE'S CASH SETTLED CORN CONTRACT
Creators: name: Sanders, Dwight R.
name: Manfredo, Mark R.
name: Greer, Tracy D.
name: Sanders, Dwight R.
name: Manfredo, Mark R.
name: Greer, Tracy D.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: basis behavior
subject: cash settlement
subject: corn futures
subject: new contracts

description: This research examines the potential basis behavior and hedging effectiveness for the Minneapolis Grain Exchange's (MGE's) cash settled corn contract. MGE futures cash settle to the National Corn Index (NCI) calculated by the Data Transmission Network (DTN). Focusing on seven regions in Illinois, the data suggest that NCI futures offer potential advantages over the existing Chicago Board of Trade (CBOT) corn futures. In particular, nearby basis variability could be reduced by 4¢ per bushel from 8.6¢ to 4.6¢ per bushel, and unconditional hedging effectiveness may increase from an average of 79% for the CBOT to 93% for the NCI. These results are statistically significant, and likely to be economically important given that agribusiness firms such as grain merchandisers and country elevators traditionally have very low margins.
"EXPLORING THE LINGUISTIC REPRESENTATION OF THE MUSLIM WORLD: A SEMANTIC AND PRAGMATIC ANALYSIS"
Creators: name: Ortiqova, Dilnoza
Publisher: name: Zenodo
Year: 2024

description: The lexicon nominating the "Muslim world" is an area of linguistic inquiry that has not yet received comprehensive scholarly attention. Despite the importance of this concept, linguistic studies have primarily focused on abstract lexical units related to mental and cultural processes, aiming to understand their structural and functional significance. The mental and cultural spheres are critical for understanding how language reflects human cognition, emotional states, and cultural values. Language not only mirrors these processes but also shapes our interpretation of them through evolving lexical choices.
THE THEORY OF CONTRARY OPINION: A TEST USING SENTIMENT INDICES IN FUTURES MARKETS
Creators: name: Sanders, Dwight R.
name: Irwin, Scott H.
name: Leuthold, Raymond M.
name: Sanders, Dwight R.
name: Irwin, Scott H.
name: Leuthold, Raymond M.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: bullish consensus
subject: contrary opinion
subject: market sentiment

description: The theory of contrary opinion predicts price reversals following extremes in market sentiment. This research tests a survey-based sentiment index's usefulness as a contrary indicator across 28 U.S. futures markets. Using rigorous time-series tests, the sentiment index displays only a sporadic and marginal ability to predict returns, and in those instances the pattern is one of return continuation--not reversals. Therefore, futures traders who rely solely upon sentiment indices as contrary indicators may be misguided.
The refill of superbubble cavities
Creators: name: Recchi, Simone
name: Hensler, Gerhard
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we study the late evolution of model galaxies after a single episode of star formation of different durations. The aim of the paper is to discover the timescale needed to refill with cold gas the center of the galaxy. This timescale strongly depends on the amount of gas initially present inside the galaxy and ranges between 125 and 600 Myr. A HI hole can therefore survive several hundred Myrs after the last SNII has exploded. If, as a consequence of the refill of the center of the galaxy, a second episode of star formation occurs, it pollutes the surrounding medium in a very short timescale (of the order of 10--15 Myr), at variance with what happens if the center of the galaxy is still occupied by hot and tenuous gas.
description: 4 pages, 2 figures, accepted for publication in A&A Letters
Interplay of crystal thickness and in-plane anisotropy and evolution of quasi-one dimensional electronic character in ReSe$_{2}$
Creators: name: Hart, Lewis S.
name: Gunasekera, Surani M.
name: Webb, James L.
name: Mucha-Kruczynski, Marcin
name: Avila, José
name: Asensio, María C.
name: Wolverson, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the valence band structure of ReSe$_{2}$ crystals with varying thickness down to a single layer using nanoscale angle-resolved photoemission spectroscopy and density functional theory. The width of the top valence band in the direction perpendicular to the rhenium chains decreases with decreasing number of layers, from 280 meV for the bulk to 61 meV for monolayer. This demonstrates increase of in-plane anisotropy induced by changes in the interlayer coupling and suggests progressively more one-dimensional character of electronic states in few-layer rhenium dichalcogenides.
Aspects of the Tetrahedral Neutrino Mass Matrix
Creators: name: Ma, Ernest
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The four-parameter tetrahedral neutrino mass matrix introduced earlier by the author is studied in two specific limits, both having only two parameters and resulting in theta_13=0, theta_23=pi/4, and tan^2 theta_12=1/2. One limit corresponds to a recent proposal which predicts a normal ordering of neutrino masses; the other is new and allows both inverted and normal ordering.
description: 5 pages, no figure, important new equations added
[Brev til Johan Ernst Gunnerus]
Creators: name: Holmig (Holm), Peder
name: Gunnerus, Johan Ernst
Publisher: name: Unknown
Year: 1772

description: Takkebrev for innvalg, men avslår tilbudet
description: Ikke tr. i Dahl. Polydoc nr. 1: 458. Polydoc nr. 2: 106.
Chip-Firing and Rotor-Routing on Directed Graphs
Creators: name: Holroyd, Alexander E.
name: Levine, Lionel
name: Meszaros, Karola
name: Peres, Yuval
name: Propp, James
name: Wilson, David B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 82C20, 20K01, 05C25

description: We give a rigorous and self-contained survey of the abelian sandpile model and rotor-router model on finite directed graphs, highlighting the connections between them. We present several intriguing open problems.
description: 34 pages, 11 figures. v2 has additional references, v3 corrects figure 9, v4 corrects several typos
Hamiltonian Groups with Perfect Order Classes
Creators: name: McCarron, James
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 20D60, 20D15 (Primary), 11A41, 11A51 (Secondary)

description: A finite group is said to have "perfect order classes" if the number of elements of any given order is either zero or a divisor of the order of the group. The purpose of this note is to describe explicitly the finite Hamiltonian groups with perfect order classes. We show that a finite Hamiltonian group has perfect order classes if, and only if, it is isomorphic to the direct product of the quaternion group of order $8$, a non-trivial cyclic $3$-group and a group of order at most $2$. Theorem. A finite Hamiltonian group has perfect order classes if, and only if, it is isomorphic either to $Q\times C_{3^k}$ or to $Q\times C_{2}\times C_{3^k}$, for some positive integer $k$.
description: 9 pages, no figures; Feedback is welcome v2 Submitted version (replaced one lemma with citation to previous occurrence in the literature; other textual emendations) v3 8 pages, no figures: Simplified proof of one lemma and other minor edits
MEDIA COVERAGE OF AGROBIOTECHNOLOGY: DID THE BUTTERFLY HAVE AN EFFECT?
Creators: name: Marks, Leonie A.
name: Kalaitzandonakes, Nicholas G.
name: Allison, Kevin
name: Zakharova, Ludmila
name: Marks, Leonie A.
name: Kalaitzandonakes, Nicholas G.
name: Allison, Kevin
name: Zakharova, Ludmila
Publisher: name: Unknown
Year: 2003
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: Teaching/Communication/Extension/Profession
subject: biosafety
subject: content analysis
subject: environment
subject: GM crops
subject: GMOs
subject: media coverage

description: This study examines media coverage of genetically modified (GM) crops in a risk communication framework. Content analysis is employed to investigate how specific environmental, food safety, and landmark events, such as the monarch butterfly and Pusztai controversies, and the cloning of Dolly-the-sheep, were reported by the media. Media coverage is from United Kingdom and United States newspapers over the period 1990 through 2001. On balance, findings show that the UK press has been more negative than the U.S. press in its coverage of GM crops. In addition, environmental and food safety events had a significant impact on the level and cycle of GM crop coverage.
[Brev til DKNVS]
Creators: name: Luxdorph, Bolle Willum
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1772

description: Takkebrev for innvalg
description: Kopi fra Riksarkivet, Bernt Moes autografsamling, RA 10. Brevet er stilet til biskop Gunnerus. Polydoc nr. 1: 4613.
The Araucaria Project. The Distance to the Local Group Galaxy IC 1613 from Near-Infrared Photometry of Cepheid Variables
Creators: name: Pietrzynski, G.
name: Gieren, W.
name: Soszynski, I.
name: Bresolin, F.
name: Kudritzki, R. P.
name: Dall'Ora, M.
name: Storm, J.
name: Bono, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have measured accurate near-infrared magnitudes in the J and K bands of 39 Cepheid variables in IC 1613 with well-determined periods and optical VI light curves. Using the template light curve approach of Soszy{ń}ski, Gieren and Pietrzy{ń}ski, accurate mean magnitudes were obtained from these data which allowed to determine the distance to IC 1613 relative to the LMC from a multiwavelength period-luminosity solution in the optical VI and near-IR JK bands, with an unprecedented accuracy. Our result for the IC 1613 distance is $(m-M)_{0} = 24.291 \pm 0.014$ (random error) mag, with an additional systematic uncertainty smaller than 2%. From our multiwavelength approach, we find for the total (average) reddening to the IC 1613 Cepheids $E(B-V) = 0.090 \pm 0.007$ mag,which is significantly higher than the foreground reddening of about 0.03 mag,showing the presence of appreciable dust extinction inside the galaxy. Our data suggest that the extinction law in IC 1613 is very similar to the galactic one.Our distance result agrees, within the uncertainties, with two earlier infrared Cepheid studies in this galaxy of Macri et al. (from HST data on 4 Cepheids), and McAlary et al. (from ground-based H-band photometry of 10 Cepheids), but our result has reduced the total uncertainty on the distance to IC 1613 (relative to the LMC) to less than 3%. With distances to nearby galaxies from Cepheid infrared photometry at this level of accuracy, which are currently being obtained in our Araucaria Project, it seems possible to significantly reduce the systematic uncertainty of the Hubble constant as derived from the HST Key Project approach, by improving the calibration of the metallicity effect on PL relation zero points, and by improving the distance determination to the LMC.
description: ApJ in press
INSTITUTIONAL ECONOMICS AND THE EMERGENCE OF E-COMMERCE IN AGRIBUSINESS
Creators: name: Moss, Charles B.
name: Schmitz, Troy G.
name: Kagan, Albert
name: Schmitz, Andrew
name: Moss, Charles B.
name: Schmitz, Troy G.
name: Kagan, Albert
name: Schmitz, Andrew
Publisher: name: Unknown
Year: 2003
Subjects: subject: Agribusiness
subject: Institutional and Behavioral Economics
subject: E-commerce
subject: marketing channels
subject: New Institutional Economics
subject: Schumpeter

description: The emergence of E-commerce in the 1990s heralded the arrival of the New Economy. However, the failure of numerous dotcoms since early 2001 has led to a debate regarding the future direction of E-commerce and its potential relevance for agribusiness. This study examines the economic implications of E-commerce for agribusiness within the framework of New Institutional Economics. The New Institutional Economics implies that E-commerce has the potential to reduce direct transactions costs in agricultural markets, but that it also may add additional indirect transactions costs. Depending upon the tradeoff between these costs, an institutional innovation which reduces the transactions costs may provide the impetus for an alternative marketing channel for agricultural output. Two models of institutional change are explored. The North model of changes in the rules of the game is found to be more consistent with the advent of E-commerce than the model of technological change suggested by Schumpeter.
[Brev til Johan Ernst Gunnerus]
Creators: name: Reventlow, Christian Ditlev
name: Gunnerus, Johan Ernst
Publisher: name: Unknown
Year: 1772

description: Takkebrev for innvalg
description: Ikke tr. i Dahl. Brevet er signert også av Johann Ludwig Rewentlow. Polydoc nr. 1: 459. Polydoc nr. 2: 107.
CONSUMERS' VALUATION OF DISEASE-RESISTANT NURSERY STOCK: A CASE STUDY OF DOGWOODS
Creators: name: Gardner, Justin G.
name: Eastwood, David B.
name: Brooker, John R.
name: Klingeman, William E.
name: Gardner, Justin G.
name: Eastwood, David B.
name: Brooker, John R.
name: Klingeman, William E.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: contingent valuation
subject: disease resistance
subject: dogwood
subject: marketing
subject: maximum likelihood
subject: nursery
subject: powdery mildew

description: This article summarizes a study of consumers' willingness to pay (WTP), in urban areas in Tennessee, Mississippi, and Michigan, for a powdery mildew resistant dogwood tree. Powdery mildew is a disease affecting flowering dogwoods that can limit growth, detract from the appearance, and may cause plant decline and death. Study objectives were to provide information about consumers' WTP and to identify potential marketing strategies for the introduction of the disease-resistant tree. On average, survey respondents indicated they are willing to pay a $13.35 premium for a flowering dogwood tree which is resistant to powdery mildew. Regression results led to inferences that the presence of dogwoods in a respondent's yard, presence of dogwoods infected with powdery mildew in a yard, landscape expenditures, presence of flower beds, landscape satisfaction, criteria for selecting plants and trees, retail outlets where respondents shop for landscape materials, geographic location, and income had significant effects on the WTP. Marketing implications include the need to provide information at the point of sale, to place the trees near flowering plants at outlets, and to interact with shoppers to determine characteristics of their yards.
Data-Driven Control of Nonlinear Systems: Beyond Polynomial Dynamics
Creators: name: Strässer, Robin
name: Berberich, Julian
name: Allgöwer, Frank
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: In this paper, we present a data-driven controller design method for continuous-time nonlinear systems, using no model knowledge but only measured data affected by noise. While most existing approaches focus on systems with polynomial dynamics, our approach allows to design controllers for unknown systems with rational or general non-polynomial dynamics. We first derive a data-driven parametrization of unknown nonlinear systems with rational dynamics. By applying robust control techniques to this parametrization, we obtain sum-of-squares based criteria for designing controllers with closed-loop robust stability and performance guarantees for all systems which are consistent with the measured data and the assumed noise bound. We then apply this approach to control systems whose dynamics are linear in general non-polynomial basis functions by transforming them into polynomial systems. Finally, we apply the developed approaches to numerical examples.
description: Accepted for 60th IEEE Conference on Decision and Control (CDC)
Asymptotics of semigroups generated by operator matrices
Creators: name: Mugnolo, Delio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 47D06

description: We survey some known results about operator semigroup generated by operator matrices with diagonal or coupled domain. These abstract results are applied to the characterization of well-/ill-posedness for a class of evolution equations with dynamic boundary conditions on domains or metric graphs. In particular, our ill-posedness results on the heat equation with general Wentzell-type boundary conditions complement those previously obtained by, among others, Bandle-von Below-Reichel and Vitillaro-Vázquez.
[Brev til DKNVS]
Creators: name: Horrebow, Christian
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1772

description: Takkebrev for innvalg
description: Horrebow var matematiker. Kopi fra Riksarkivet, Bernt Moes autografsamling. Polydoc nr. 1: 4614.
LOCAL COOPERATIVES' EVALUATION OF BUSINESS INVESTMENT OPPORTUNITIES
Creators: name: Hine, Susan E.
name: Fulton, Joan R.
name: Loureiro, Maria L.
name: Vandeburg, Jennifer M.
name: McNamara, Kevin T.
name: Hine, Susan E.
name: Fulton, Joan R.
name: Loureiro, Maria L.
name: Vandeburg, Jennifer M.
name: McNamara, Kevin T.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Agribusiness
subject: capital budgeting methods
subject: cooperatives
subject: finance
subject: restructuring

description: Agricultural cooperatives have been restructuring, by way of mergers, acquisitions, joint-ventures, and strategic alliances, to increase efficiencies to remain competitive in a changing business environment. The research evaluating the reorganization of cooperatives has revealed that less than one-half of the restructured businesses are financially successful. There is the potential to significantly influence the future health of the cooperative business sector if, first, insights can be gained concerning the factors being considered by cooperative managers when making restructuring decisions and, second, extension education programs can be adapted to meet the greatest need. In this study we examine: (a) what methods of valuation cooperatives are using when evaluating new business opportunities, and (b) what factors influence the methods of valuation preferred by cooperatives when evaluating new business opportunities.