cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Retrograde Accretion and Merging Supermassive Black Holes
Creators: name: Nixon, C. J.
name: Cossins, P. J.
name: King, A. R.
name: Pringle, J. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate whether a circumbinary gas disc can coalesce a supermassive black hole binary system in the centre of a galaxy. This is known to be problematic for a prograde disc. We show that in contrast, interaction with a retrograde circumbinary disc is considerably more effective in shrinking the binary because there are no orbital resonances. The binary directly absorbs negative angular momentum from the circumbinary disc by capturing gas into a disc around the secondary black hole, or discs around both holes if the binary mass ratio is close to unity. In many cases the binary orbit becomes eccentric, shortening the pericentre distance as the eccentricity grows. In all cases the binary coalesces once it has absorbed the angular momentum of a gas mass comparable to that of the secondary black hole. Importantly, this conclusion is unaffected even if the gas inflow rate through the disc is formally super--Eddington for either hole. The coalescence timescale is therefore always $\sim M_2/\dot M$, where $M_2$ is the secondary black hole mass and $\dot M$ the inflow rate through the circumbinary disc.
description: 8 pages, 4 figures. Accepted for publication in MNRAS. Movies of the simulations can be found at: http://www.astro.le.ac.uk/users/cjn12/RetroBinaryMovies.html
31961: Posters from the UN
Creators: name: Project, Lockdown2020 and Beyond
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 479999
subject: Other language, communication and culture not elsewhere classified

description: We are in IT support and are able to work from home without too much disruption. We also have the luxury of a garden and can be outdoors during the best spring in living memory!
Disentangling protostellar evolutionary stages in clustered environments using Spitzer-IRS spectra and comprehensive SED modeling
Creators: name: Forbrich, Jan
name: Tappe, Achim
name: Robitaille, Thomas
name: Muench, August A.
name: Teixeira, Paula S.
name: Lada, Elizabeth A.
name: Stolte, Andrea
name: Lada, Charles J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: When studying the evolutionary stages of protostars that form in clusters, the role of any intracluster medium cannot be neglected. High foreground extinction can lead to situations where young stellar objects (YSOs) appear to be in earlier evolutionary stages than they actually are, particularly when using simple criteria like spectral indices. To address this issue, we have assembled detailed SED characterizations of a sample of 56 Spitzer-identified candidate YSOs in the clusters NGC 2264 and IC 348. For these, we use spectra obtained with the Infrared Spectrograph onboard the Spitzer Space Telescope and ancillary multi-wavelength photometry. The primary aim is twofold: 1) to discuss the role of spectral features, particularly those due to ices and silicates, in determining a YSO's evolutionary stage, and 2) to perform comprehensive modeling of spectral energy distributions (SEDs) enhanced by the IRS data. The SEDs consist of ancillary optical-to-submillimeter multi-wavelength data as well as an accurate description of the 9.7 micron silicate feature and of the mid-infrared continuum derived from line-free parts of the IRS spectra. We find that using this approach, we can distinguish genuine protostars in the cluster from T Tauri stars masquerading as protostars due to external foreground extinction. Our results underline the importance of photometric data in the far-infrared/submillimeter wavelength range, at sufficiently high angular resolution to more accurately classify cluster members. Such observations are becoming possible now with the advent of the Herschel Space Observatory.
description: Accepted for publication in ApJ
Vacuum expectation value of A^2 from LQCD
Creators: name: Pène, O.
name: Blossier, B.
name: Boucaud, Ph.
name: Yaouanc, A. Le
name: Leroy, J. P.
name: Micheli, J.
name: Brinet, M.
name: Gravina, M.
name: De Soto, F.
name: Liu, Z.
name: Morenas, V.
name: Petrov, K.
name: Rodríguez-Quintero, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We argue from LQCD that there is a non vanishing v.e.v of $A_a^μA^a_μ$ in QCD in the Landau gauge. We use operator product expansion to provide a clear definition of $A_a^μA^a_μ$ and extract a number both in the quenched and unquenched case.
description: 10 pages, 5 figures, talk at the workshop "The many faces of QCD", November 2-5, 2010, Gent, Belgium
Lorentz violation in the linearized gravity
Creators: name: Ferrari, A. F.
name: Petrov, A. Yu.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study some consequences of the introduction of a Lorentz-violating modification term in the linearized gravity, which leads to modified dispersion relations for gravitational waves in the vacuum. We also discuss possible mechanisms for the induction of such a term in the Lagrangian.
description: Presented at the Fifth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 28-July 2, 2010
Gromov-Witten invariants and rational curves on Grassmannians
Creators: name: Martin, Alberto Lopez
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We study the enumerative significance of the s-pointed genus zero Gromov-Witten invariant on a homogeneous space X. For that, we give an interpretation in terms of rational curves on X.
description: part of the author's PhD thesis
Understanding Cooperatives: Farmer Cooperative Statistics
Creators: name: Kraenzle, Charles A.
name: Kraenzle, Charles A.
Publisher: name: Unknown
Year: 1996
Subjects: Agribusiness
Research Methods/ Statistical Methods

description: Farmer cooperative statistics are collected annually to provide information on the progress and trends in cooperatives’ growth and development and for research, education, technical assistance, planning, and public policy.
Embodying the past in the present for the future : practicing, supporting and highlighting Indigenous tattoo revivals through Indigenous and creative research methodologies
Creators: name: Kaszas, Dion
Publisher: name: University of British Columbia
Year: 2018

description: I began the exploration of my ancestral (Nlaka'pamux) tattooing practices as a way to learn about the things that I had been denied the ability to learn in my grandmother's home community due to the legislative violence enacted upon my family and I by the Indian Act. In this thesis I will share the story of my journey moving from exploring my ancestral tattooing traditions to reviving Nlaka’pamux tattooing practices, and supporting the revival of Indigenous tattooing in Canada. The two main questions that I have sought an answer to in the pages of this research assessment portfolio are: how is a sleeping tattooing tradition awakened? And, how do I honor my Nlaka'pamux oral culture in the course of obtaining a Master of Arts degree? In answering these questions, I outline the steps that I took, what and who inspired and encouraged me, and share some of the knowledge and resources that fuelled me in the revival of Nlaka’pamux tattooing. This project looks not only at the steps and processes I took in the revival of my ancestral tattooing tradition, but I also invited four additional voices to share their journeys and their stories. They are the voices of Indigenous tattoo artists and cultural tattoo practitioners who are involved in reviving traditional tattooing practices. The combination of our stories outlines a clear narrative and logical path that can 1) support Indigenous tattoo artists as a community, 2) provide critical grounding and guidance on revival. Addressing these issues meaningfully can support education and further research for individuals and groups seeking knowledge about Indigenous tattoo revival, and 3) Move towards honoring oral culture and traditions through interdisciplinary methods, theory, and representation. This exploration of Indigenous tattoo revival has been undertaken using Nlaka’pamux, Indigenous and creative research methodologies. This thesis sought to indigenize my academic and tattooing practice.
Locating phase transitions in computationally hard problems
Creators: name: Ashok, B.
name: Patra, T. K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Complexity (cs.CC)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We discuss how phase-transitions may be detected in computationally hard problems in the context of Anytime Algorithms. Treating the computational time, value and utility functions involved in the search results in analogy with quantities in statistical physics, we indicate how the onset of a computationally hard regime can be detected and the transit to higher quality solutions be quantified by an appropriate response function. The existence of a dynamical critical exponent is shown, enabling one to predict the onset of critical slowing down, rather than finding it after the event, in the specific case of a Travelling Salesman Problem. This can be used as a means of improving efficiency and speed in searches, and avoiding needless computations.
description: To appear in Pramana: journal of physics (2010) (in press)
Iteration Index of a Zero Forcing Set in a Graph
Creators: name: Chilakamarri, Kiran B.
name: Dean, Nathaniel
name: Kang, Cong X.
name: Yi, Eunjeong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C50, 05C76, 05C38, 05C90

description: Let each vertex of a graph G = (V(G), E(G)) be given one of two colors, say, "black" and "white". Let Z denote the (initial) set of black vertices of G. The color-change rule converts the color of a vertex from white to black if the white vertex is the only white neighbor of a black vertex. The set Z is said to be a zero forcing set of G if all vertices of G will be turned black after finitely many applications of the color-change rule. The zero forcing number of G is the minimum of |Z| over all zero forcing sets Z \subseteq V (G). Zero forcing parameters have been studied and applied to the minimum rank problem for graphs in numerous articles. We define the iteration index of a zero forcing set of a graph G to be the number of (global) applications of the color-change rule required to turn all vertices of G black; this leads to a new graph invariant, the iteration index of G - it is the minimum of iteration indices of all minimum zero forcing sets of G. We present some basic properties of the iteration index and discuss some preliminary results on certain graphs.
description: 13 pages, 12 figures
Digital adaptation of the Geomorphological Map of Upper Silesian Industrial Region, Poland (1:50,000) – old map new possibilities
Creators: name: Szypuła, Bartłomiej
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Inorganic Chemistry
subject: Science Policy
subject: Plant Biology

description: The paper is a brief description which discusses the stages of the digital adaptation of the printed version of old geomorphological map. It was paid attention to difficulties and errors that arose during work (incompatibility adjacent sheets, problems with distinguishing of the particular landforms, lack of some landforms). As a result, a geodatabase with 30 vector layers was obtained depicting all relief forms on the original map. The uniqueness of this map arise due to anthropogenic relief forms placed on it. It was extremely important because the mapped area was very strongly transformed by economic human activity. It was decided to compare recorded anthropogenic landforms with maps from other periods (1890, 1993 and 2014). As a result, it was possible to trace spatial and quantitative changes of selected anthropogenic forms on this. In general, between 1890 and 2014, all anthropogenic forms increased with the largest share of the anthropogenic flats.
Evolutionary multiobjective optimization of the multi-location transshipment problem
Creators: name: Belgasmi, Nabil
name: Said, Lamjed Ben
name: Ghédira, Khaled
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We consider a multi-location inventory system where inventory choices at each location are centrally coordinated. Lateral transshipments are allowed as recourse actions within the same echelon in the inventory system to reduce costs and improve service level. However, this transshipment process usually causes undesirable lead times. In this paper, we propose a multiobjective model of the multi-location transshipment problem which addresses optimizing three conflicting objectives: (1) minimizing the aggregate expected cost, (2) maximizing the expected fill rate, and (3) minimizing the expected transshipment lead times. We apply an evolutionary multiobjective optimization approach using the strength Pareto evolutionary algorithm (SPEA2), to approximate the optimal Pareto front. Simulation with a wide choice of model parameters shows the different trades-off between the conflicting objectives.
31969: Acts of Random Kindness
Creators: name: Project, Lockdown2020 and Beyond
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 479999
subject: Other language, communication and culture not elsewhere classified

description: Whilst walking the dog I meet a couple, dressed as bacon and eggs (with tomato hats) delivering breakfast to their friend for her birthday. It makes me realise how many of these little acts of random kindness I've witnessed or heard about since the lockdown; the neighbour who leaves runner bean and sugar snap plants on my doorstep; the trout fisherman sharing their catch, blueberry and mint teabags from a friend who "saw these and thought of you". My sister-in-law's mum making instructional videos to go with packs of craft items she posts to all her grandchildren. A vast amount of charity-giving is happening, both in time and effort, but these random acts cheer-up anyone's day. We discuss on the Knitters United Teams call how we're going to the post office more often to send off crocheted bees and bags. I try to pay it forward by supporting small businesses, finding a local bakery to send croissants and bread to my other sister-in-law and niece who moved to a new town just before lockdown and vegan chocolate peanut butter to my eldest niece's houseshare. I add treats for the carer's staff room to mum's shopping delivery and get Rington's tea and books delivered to my aunt. Meanwhile people share recipes and sewing patterns and chair yoga classes and DJ sets. Back on my street, there's a shout going out every Thursday night "I have space in my green/blue/brown bin" and I, having overdone the garden clearing, gratefully accept their gift of emptiness.
The effects of star formation on the low-metallicity ISM: NGC4214 mapped with Herschel/PACS spectroscopy
Creators: name: Cormier, D.
name: Madden, S. C.
name: Hony, S.
name: Contursi, A.
name: Poglitsch, A.
name: Galliano, F.
name: Sturm, E.
name: Doublier, V.
name: Feuchtgruber, H.
name: Galametz, M.
name: Geis, N.
name: de Jong, J.
name: Okumura, K.
name: Panuzzo, P.
name: Sauvage, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present Herschel/PACS spectroscopic maps of the dwarf galaxy NC4214 observed in 6 far infrared fine-structure lines: [C II] 158mu, [O III] 88mu, [O I] 63mu, [O I] 146mu, [N II] 122mu, and [N II] 205mu. The maps are sampled to the full telescope spatial resolution and reveal unprecedented detail on ~ 150 pc size scales. We detect [C II] emission over the whole mapped area, [O III] being the most luminous FIR line. The ratio of [O III]/[C II] peaks at about 2 toward the sites of massive star formation, higher than ratios seen in dusty starburst galaxies. The [C II]/CO ratios are 20 000 to 70 000 toward the 2 massive clusters, which are at least an order of magnitude larger than spiral or dusty starbursts, and cannot be reconciled with single-slab PDR models. Toward the 2 massive star-forming regions, we find that L[CII] is 0.5 to 0.8% of the LTIR . All of the lines together contribute up to 2% of LTIR . These extreme findings are a consequence of the lower metallicity and young, massive-star formation commonly found in dwarf galaxies. These conditions promote large-scale photodissociation into the molecular reservoir, which is evident in the FIR line ratios. This illustrates the necessity to move to multiphase models applicable to star-forming clusters or galaxies as a whole.
description: Accepted for publication in the A&A Herschel Special Issue
Modelling soil erosion and runoff for a super typhoon event using PCRaster
Creators: name: Bato, Victorino A.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: A physical model for soil erosion and runoff was created for Alimit River Sub-watershed, using PCRaster Software. Manning's equation was used to model surface runoff velocity and Rose’ and Freebairn’s Equation was used to compute for sediment concentration. Event-based rainfall, saturated hydraulic conductivity, land use map, and digital elevation model were used as input for the model. Close correspondence was observed between the measured and predicted values for both streamflow and mass of eroded sediments. It was observed that vegetation played a significant role in reducing eroded sediments and choosing the correct Manning's Roughness Coefficient for various land use/ land cover is of utmost importance. Furthermore, in the absence of soil data, land use/ land cover or NDVI (Normalized Difference Vegetation Index) can be used as basis for the hydraulic conductivity of the soil.
Measurable Time-Restricted Sensitivity
Creators: name: Aiello, Domenico
name: Diao, Hansheng
name: Fan, Zhou
name: King, Daniel O.
name: Lin, Jessica
name: Silva, Cesar E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: Primary 37A05, Secondary 37F10

description: We develop two notions of time-restricted sensitivity to initial conditions for measurable dynamical systems, where the time before divergence of a pair of paths is at most an asymptotically logarithmic function of a measure of their initial distance. In the context of finite measure-preserving transformations on a compact space, we relate these notions to the metric entropy of the system. We examine one of these notions for classes of non-measure-preserving, nonsingular transformations.
Calculations of Planetary Atom States
Creators: name: Richter, Klaus
name: Wintgen, Dieter
Publisher: name: Universität Regensburg
Year: 1991
Subjects: subject: 530 Physik

description: The authors prove the existence of a new type of resonance formation in highly doubly excited atoms and ions. The resonant states represent the quantum analogue of a stable planetary atom configuration discovered recently in classical mechanics. The energies and total decay widths of the resonances are calculated quantum mechanically by solving the full three-body Coulomb problem without any approximation. The resonance energies and the structure of the associated wavefunctions coincide with expectations derived from simple semiclassical models. The authors discuss excitation schemes which should allow an experimental observation of these strongly correlated electron states.
πN scattering in relativistic baryon chiral perturbation theory revisited
Creators: name: Alarcon, J. M.
name: Camalich, J. Martin
name: Oller, J. A.
name: Alvarez-Ruso, L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have analyzed pion-nucleon scattering using the manifestly relativistic covariant framework of Infrared Regularization up to {\cal O}(q^3) in the chiral expansion, where q is a generic small momentum. We describe the low-energy phase shifts with a similar quality as previously achieved with Heavy Baryon Chiral Perturbation Theory, \sqrt{s}\lesssim1.14 GeV. New values are provided for the {\cal O}(q^2) and {\cal O}(q^3) low-energy constants, which are compared with previous determinations. This is also the case for the scattering lengths and volumes. Finally, we have unitarized the previous amplitudes and as a result the energy range where data are reproduced increases significantly.
description: 26 pages, 5 figures, 5 tables
A Guide to Survey Research for Local Cooperative Management
Creators: name: Hogeland, Julie A.
name: Hogeland, Julie A.
Publisher: name: Unknown
Year: 1980
Subjects: Agribusiness
Research Methods/ Statistical Methods

description: Report Introduction: Cooperatives cannot be successfully operated unless managers recognize the concerns which are uppermost in the minds of patrons. Knowledge of their preferences, perceptions, and expected behavior can reduce uncertainty for both the manager and the board of directors. This information can help identify operations of the cooperative which are successful and merit expansion, as well as those which need to be corrected or curtailed. A cooperative may need to relocate, add new facilities such as a feed mill, or do bulk spreading of lime. In each of these situations, questionnaires and interviews, the tools of survey research, can provide information to ease decisionmaking. This pamphlet is intended to aid cooperative managers who want to survey patrons or other groups on these and other issues facing a cooperative.
The state of internet technology in Zambia (a media perspective)
Creators: name: Mambwe, Elastus
Publisher: name: Zenodo
Year: 2015
Subjects: Internet in Zambia
Media
Elastus Mambwe
Technology
Zambia
Internet
Elastus

description: This paper looks at internet technology in Zambia. It begins by giving an introduction that defines and briefly discusses the importance of the internet. The chapter then gives a historical account of the birth of the internet in the country and goes on to describe the current status of the technology in Zambia. A perspective discussion on the internet and the media is thereafter given and then it concludes by making some projections based on current trends and experiences.
Improved measurement model for FG5/X gravimeters and essential outputs from re-processing of raw data
Creators: name: Křen, Petr
name: Pálinkáš, Vojtech
name: Vaľko, Miloš
name: Šimek, Jakub
Publisher: name: Zenodo
Year: 2023
Subjects: absolute gravimeter

description: We have developped a Python based program for reprocessing of measurements with FG5/X gravimeters. The measurement model itself has been improved by more precise description of the demodulation of the interferometric signal and by the extension of the model by 2 parameters related to the newly discovered spatial parasitic wave caused by the dropping mechanism of FG5/X gravimeters. The outputs of the software are allowing to achieve parameters which are helpful for the estimation of the quality of measurements and its uncertainty.
description: We would like to acknowledge the financial support from the project "Research related with International Gravity Reference System" funded by the Ministry of Education, Youth and Sports of the Czech Republic (MŠMT) as grant no. LTT19008.
Bouguer Anomaly of Central Cebu, Philippines
Creators: name: Armada, Leo
name: Dimalanta, Carla
name: Parcutela, Nathaniel
name: Austria, Rurik
name: Padrones, Jenielyn
name: Payot, Betchaida
name: Queaño, Karlo
name: Yumul, Graciano
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Cebu Island in Central Philippines consists of a Cretaceous basement complex capped by mostly Tertiary sedimentary units. Recent mapping conducted in Central Cebu revealed limited exposures of lithologies, especially those comprising the basement complex. The gravity method was utilized to generate Bouguer anomaly maps for Central Cebu. These geophysical maps provide the first images of the subsurface extent of the basement units. A prominent nearly circular gravity anomaly high is consistently observed in the Bouguer anomaly maps coinciding with the location of dense basement and intrusive rocks. However, field mapping revealed the very limited surface exposure of these units. The gravity highs recognized in the residual anomaly maps may correspond to the larger extent of the intrusive units at depth. The broad gravity high observed in the regional anomaly map may define the extent of the subsurface distribution of the Cretaceous basement complex.
Geology of the northern Convoy Range, Victoria Land, Antarctica
Creators: name: Capponi, Giovanni
name: Montomoli, Chiara
name: Casale, Stefano
name: Simonetti, Matteo
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer

description: In this paper, we supply a geological map of the area between 76°–76°30′S and 159°–163°E, that was the only missing portion to complete an entire coverage of Victoria Land, filling the gap between the GIGAMAP program (to the north) and the maps by the New Zealand Antarctic program (to the south). The mapped area encompasses an early Paleozoic basement, and a flat-lying cover of sedimentary and igneous rocks, Permo-Triassic to Jurassic in age. The basement consists of large bodies of the Granite Harbour Igneous Complex, a granitic complex linked to the Ross Orogeny. After the early Paleozoic Ross Orogeny, the area was uplifted and eroded, and the sandstones of the Beacon Supergroup were deposited on the resulting erosion surface. The Beacon Supergroup sandstones were in turn covered and in most cases incorporated into the volcanic and sub-volcanic rocks of the Jurassic Ferrar Group.
Dynamic and stochastic propagation of Brenier’s optimal mass transport
Creators: name: Barton, Alistair
Publisher: name: University of British Columbia
Year: 2018

description: I present analysis of how the mass transports that optimize the inner product cost---considered by Y. Brenier---propagate in time along a given Lagrangian in both deterministic and stochastic settings. While for the minimizing transports one may easily obtain Hopf-Lax formulas on Wasserstein space by inf-convolution, this is not the case for the maximizing transports, which are sup-inf problems. In this case, we assume that the Lagrangian is jointly convex on phase space, which allow us to use Bolza-type duality, a well known phenomenon in the deterministic case but, as far as I know, novel in the stochastic case. Hopf-Lax formulas help relate optimal ballistic transports to those associated with the dynamic fixed-end transports studied by Bernard-Buffoni and Fathi-Figalli in the deterministic case, and by Mikami-Thieullen in the stochastic setting.
Gauge-invariant formulation of $N N \to N N γ$
Creators: name: Haberzettl, H.
name: Nakayama, K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A complete, rigorous relativistic field-theory formulation of the nucleon-nucleon (NN) bremsstrahlung reaction is presented. The resulting amplitude is unitary as a matter of course and it is gauge invariant, i.e., it satisfies a generalized Ward-Takahashi identity. The novel feature of this approach is the consistent microscopic implementation of local gauge invariance across all interaction mechanisms of the hadronic systems, thus serving as a constraint for all subprocesses. The formalism is quite readily adapted to approximations and thus can be applied even in cases where the microscopic dynamical structure of the underlying interacting hadronic systems is either not known in detail or too complex to be treated in detail. We point out how the interaction currents resulting from the photon being attached to nucleon-nucleon-meson vertices can be treated by phenomenological four-point contact currents that preserve gauge invariance. In an advance application of the present formalism [K. Nakayama and H. Haberzettl, PRC 80, 051001(R) (2009)], such interaction currents were found to contribute significantly in explaining experimental data. In addition, we provide a scheme that permits the approximate treatment of current contributions resulting from pieces of the NN interaction that cannot be incorporated exactly. In each case, the approximation procedure ensures gauge invariance of the entire bremsstrahlung amplitude. We also discuss the necessary modifications when taking into account baryonic states other than the nucleon N; in detail, we consider the $Delta(1232)$ resonance by incorporating the couplings of the $NN$ to the $NΔ$ and $ΔΔ$ systems, and the $γN \to Δ$ transitions. We apply the formalism to the 280-MeV bremsstrahlung data from TRIUMF [PRD 41, 2689 (1990)] incorporating $γNΔ$ transition currents and find good agreement with the data.
description: 17 pages, 11 figures
Dust-temperature of an isolated star-forming cloud: Herschel observations of the Bok globule CB244
Creators: name: Stutz, A.
name: Launhardt, R.
name: Linz, H.
name: Krause, O.
name: Henning, T.
name: Kainulainen, J.
name: Nielbock, M.
name: Steinacker, J.
name: Andre, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present Herschel observations of the isolated, low-mass star-forming Bok globule CB244. It contains two cold sources, a low-mass Class 0 protostar and a starless core, which is likely to be prestellar in nature, separated by 90 arcsec (~ 18000 AU). The Herschel data sample the peak of the Planck spectrum for these sources, and are therefore ideal for dust-temperature and column density modeling. With these data and a near-IR extinction map, the MIPS 70 micron mosaic, the SCUBA 850 micron map, and the IRAM 1.3 mm map, we model the dust-temperature and column density of CB244 and present the first measured dust-temperature map of an entire star-forming molecular cloud. We find that the column-averaged dust-temperature near the protostar is ~ 17.7 K, while for the starless core it is ~ 10.6K, and that the effect of external heating causes the cloud dust-temperature to rise to ~ 17 K where the hydrogen column density drops below 10^21 cm^-2. The total hydrogen mass of CB244 (assuming a distance of 200 pc) is 15 +/- 5 M_sun. The mass of the protostellar core is 1.6 +/- 0.1 M_sun and the mass of the starless core is 5 +/- 2 M_sun, indicating that ~ 45% of the mass in the globule is participating in the star-formation process.
description: Accepted for A&A Herschel Special Issue; 5 pages, 2 figures
The Yang Monopole in IIA Superstring: Multi-charge Disease and Enhancon Cure
Creators: name: Belhaj, Adil
name: Diaz, Pablo
name: Segui, Antonio
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A brane picture in Type IIA superstring for the Yang Monopole is reconsidered. It makes use of D2 and D4-branes wrapped on cycles in the K3 surface. When the model was first presented some problems concerning the charges of the monopoles arised. In this paper, they are shown to be cured by the model itself. Surprisingly, the incompatibility between the multi-charge configuration and the spherical symmetry of the Yang Monopole is seen in the brane description as the emergence of the enhancon shell and the fuzzy geometry. This consistency is deep and surprising, and is the point that triggered this work. It nontrivially relates a purely geometrical problem in ordinary spacetime with the emergence of noncommutative geometries. Besides, this paper includes an extended model for SO(4)-monopoles, a T-dual model in Type IIB superstring and an analysis on the possible duality between our model and another setup in M-Theory/Heterotics for the Yang monopole found before.
description: 22 pages, 1 figure
Preparation of n-qubit Greenberger-Horne-Zeilinger entangled states in cavity QED: An approach with tolerance to nonidentical qubit-cavity coupling constants
Creators: name: Yang, Chui-Ping
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a way for generating $n$-qubit Greenberger-Horne-Zeilinger (GHZ) entangled states with a three-level qubit system and (n-1) four-level qubit systems in a cavity. This proposal does not require identical qubit-cavity coupling constants, and thus is tolerant to qubit-system parameter nonuniformity and nonexact placement of qubits in a cavity. The proposal does not require adjustment of the qubit-system level spacings during the entire operation. Moreover, it is shown that entanglement can be deterministically generated using this method and the operation time is independent of the number of qubits. The present proposal is quite general, which can be applied to physical systems such as various types of superconducting devices coupled to a resonator or atoms trapped in a cavity.
description: 3 figures, accepted by Phys. Rev. A
A biology-inspired attention model with application in robot navigation
Creators: name: Du, Yu
Publisher: name: University of British Columbia
Year: 2018

description: At present, robots are applied to specific situations and needs, so special methods are adopted for determining and controlling their movements. This thesis investigates the attention and navigation control of a mobile robot for carrying out dynamically challenging tasks involving humans. Since the robot environment can be complex, dynamic, and unpredictable, the required capacities are defined as those where the robot is required to pay attention to the needed object, plan the best path to the goal location and avoid obstacles. This thesis makes significant contributions in the development of an integrated model of top-down and bottom-up visual attention with self-awareness, and a biology-inspired method of robot planning and obstacle avoidance for a mobile robot. Specifically, an integrated model of top-down and bottom-up visual attention with self-awareness for robot is developed for selecting the highest saliency area in robot view. For mimicking the human attention processes, a robot self-awareness model with a fuzzy decision making system is developed and utilized, which is an important improvement over the existing robot attention models. Inspired by a mammal’s spatial awareness and navigation capabilities, a path planning method based on biological recognition is proposed for navigation tasks of a mobile robot in an unstructured and dynamic environment. An episodic cognitive map that encapsulates the information of scene perception, state neurons and pose perception is built to realize the environment cognition of the robot. An algorithm of the event sequence planning is presented for real-time navigation using the minimum distance between events. The method can choose the optimal planning path based on the tasks. A visual navigation algorithm that has the scale invariant feature transform (SIFT) feature is presented. By using the SIFT feature information, the horizontal coordinate of the matched feature pairs is considered to achieve the purpose of visual navigation. An approach of obstacle avoidance for visual navigation is presented based on a risk function and feasible paths. It can choose an optimal path for obstacle avoidance and then return to path planning through the interaction with the surrounding environment. The developed methodologies are evaluated using both simulation and experimentation.
Soil rooting depth of Italy
Creators: name: Rivieccio, Rosa
name: Di Bene, Claudia
name: Paolanti, Massimo
name: Marchetti, Marco
name: Napoli, Rosario
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Plant Biology

description: Soils perform several functions in delivering ecosystem services and soil thematic maps are useful for environmental modelling, landscape planning, and management optimization. This study aimed at producing the first soil rooting depth map of Italy at 1:250,000 scale based on the legacy soil maps, soil data and benchmark proﬁles, combined with the auxiliary data. The map highlights that moderately deep (33%) and deep (25%) soils are predominant and mainly distributed in hilly areas, while very deep soils (18%) are prevalent in the fluvial and coastal plains. The validation procedure showed that 87% of the soil rooting depth map classes fall within the same and adjacent classes of the measured soil profiles database. The soil rooting depth map of Italy at 1:250,000 scale can be a useful tool to support land management and spatial planning in terms of agro-environmental measures, making reliable assessments for ecological sustainability studies, and for environmental territorial analyses.
The universal red-giant oscillation pattern; an automated determination with CoRoT data
Creators: name: Mosser, B.
name: Belkacem, K.
name: Goupil, M. J.
name: Michel, E.
name: Elsworth, Y.
name: Barban, C.
name: Kallinger, T.
name: Hekker, S.
name: DeRidder, J.
name: Samadi, R.
name: Baudin, F.
name: Pinheiro, F. J. G.
name: Auvergne, M.
name: Baglin, A.
name: Catala, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The CoRoT and Kepler satellites have provided thousands of red-giant oscillation spectra. The analysis of these spectra requires efficient methods for identifying all eigenmode parameters. The assumption of new scaling laws allows us to construct a theoretical oscillation pattern. We then obtain a highly precise determination of the large separation by correlating the observed patterns with this reference. We demonstrate that this pattern is universal and are able to unambiguously assign the eigenmode radial orders and angular degrees. This solves one of the current outstanding problems of asteroseismology hence allowing precise theoretical investigation of red-giant interiors.
description: Accepted in A&A letters
Organizing and Conducting Cooperatives' Annual Meetings
Creators: name: Agricultural Cooperative Service
name: Agricultural Cooperative Service
Publisher: name: Unknown
Year: 1992
Subjects: Agribusiness
Teaching/Communication/Extension/Profession

description: Excerpts from the Report: The annual meeting is the highlight of a cooperative’s year. It is the time when management gives an accounting to members and when members-as joint owners-express their views to the manager, directors, and employees. Summed up, the annual meeting is-and should be viewed as-the major cooperative educational event of the year. Cooperative bylaws require an annual meeting. Every manager and director wants a good one. Successful meetings don’t just happen but must be planned and executed in detail. When this is accomplished, the annual meeting program can be important in stimulating goodwill and building membership understanding. This report offers helpful suggestions to cooperative managers and others responsible for annual meetings. It is directed primarily to associations that operate locally and that invite the entire membership to the meeting. Many suggestions, however, will also be useful to regional organizations whose annual meetings are attended by delegates
Quantized Periodic Orbits in Large Antidot Arrays
Creators: name: Weiss, Dieter
name: Richter, Klaus
name: Menschig, A.
name: Bergmann, R.
name: Schweizer, H.
name: von Klitzing, Klaus
name: Weimann, G.
Publisher: name: Universität Regensburg
Year: 1993
Subjects: subject: 530 Physik
subject: 73.20.Dx
subject: 03.65.Sq
subject: 05.45.+b
subject: 73.50.Jt

description: The resistivity {\it rho} $_{{\it xx}}$ measured in large antidot arrays as a function of an applied perpendicular magnetic field {\it B} displays distinct quantum oscillations at very low temperatures. These oscillations characteristically differ from conventional Shubnikov-de Haas oscillations which are periodic in 1/{\it B}. A crossover to {\it B } periodic oscillations at low {\it B} discloses the influence of the imposed potential. Applying semiclassical periodic orbit theory to the nonintegrable (chaotic) electron motion in the antidot lattice we attribute these phenomena to the quantization of few fundamental periodic orbits.
Entanglement without Dissipation: A Touchstone for an exact Comparison of Entanglement Measures
Creators: name: Ford, G. W.
name: Gao, Yang
name: O'Connell, R. F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement, which is an essential characteristic of quantum mechanics, is the key element in potential practical quantum information and quantum communication systems. However, there are many open and fundamental questions (relating to entanglement measures, sudden death, etc.) that require a deeper understanding. Thus, we are motivated to investigate a simple but non-trivial correlated two-body continuous variable system in the absence of a heat bath, which facilitates an \underline{exact} measure of the entanglement at all times. In particular, we find that the results obtained from all well-known existing entanglement measures agree with each other but that, in practice, some are more straightforward to use than others.
A proposal for implementing an n-qubit controlled-rotation gate with three-level superconducting qubit systems in cavity QED
Creators: name: Yang, Chui-Ping
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a way for implementing an n-qubit controlled-rotation gate with three-level superconducting qubit systems in cavity QED. The two logical states of a qubit are represented by the two lowest levels of each system while a higher-energy level is used for the gate implementation. The method operates essentially by preparing a $W$ state conditioned on the states of the control qubits, creating a single photon in the cavity mode, and then performing an arbitrary rotation on the states of the target qubit with assistance of the cavity photon. It is interesting to note that the basic operational steps for implementing the proposed gate do not increase with the number $n$ of qubits, and the gate operation time decreases as the number of qubits increases. This proposal is quite general, which can be applied to various types of superconducting devices in a cavity or coupled to a resonator.
description: Six figures, accepted by Journal of Physics: Condensed Matter
Optimality conditions for the calculus of variations with higher-order delta derivatives
Creators: name: Ferreira, Rui A. C.
name: Malinowska, Agnieszka B.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49K05, 26E70, 34N05

description: We prove the Euler-Lagrange delta-differential equations for problems of the calculus of variations on arbitrary time scales with delta-integral functionals depending on higher-order delta derivatives.
description: Submitted 26/Jul/2009; Revised 04/Aug/2010; Accepted 09/Aug/2010; for publication in "Applied Mathematics Letters"
Search for neutral Higgs bosons in the multi-b-jet topology in 5.2fb-1 of ppbar collisions at sqrt(s)=1.96 TeV
Creators: name: D0 Collaboration
name: al., V. Abazov et
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Data recorded by the D0 experiment at the Fermilab Tevatron Collider are analyzed to search for neutral Higgs bosons produced in association with b quarks. The search is performed in the three-b-quark channel using multijet-triggered events corresponding to an integrated luminosity of 5.2fb-1. In the absence of any significant excess above background, limits are set on the cross section multiplied by the branching ratio in the Higgs boson mass range 90 to 300 GeV, extending the excluded regions in the parameter space of the minimal supersymmetric standard model.
description: 10 pages, 6 figures, submitted to Phys. Lett. B
Lie symmetry analysis of nonlinear evolution equation for description nonlinear waves in a viscoelastic tube
Creators: name: Nadjafikhah, Mehdi
name: Shirvani-Sh, Vahid
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper, the Lie symmetry method is performed for the nonlinear evolution equation for description nonlinear waves in a viscoelastic tube. we will find one and two-dimensional optimal system of Lie subalgebras. Furthermore, preliminary classification of its group-invariant solutions are investigated.
description: 9 pages
Poultry and Egg Cooperatives
Creators: name: Mather, J. Warren
name: Drewniak, Edwin
name: Mather, J. Warren
name: Drewniak, Edwin
Publisher: name: Unknown
Year: 1984
Subjects: subject: Agribusiness
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Covers: Early Cooperative Poultry and Egg Marketing, Cooperative Marketing of Eggs, Turkeys, Broilers, and Other Poultry (fowl, ducks, squab)