cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quasi-free photoproduction of eta-mesons off 3He nuclei
Creators: name: Witthauer, L.
name: Werthmueller, D.
name: Keshelashvili, I.
name: Aguar-Bartolome, P.
name: Ahrens, J.
name: Annand, J. R. M.
name: Arends, H. J.
name: Bantawa, K.
name: Beck, R.
name: Bekrenev, V.
name: Braghieri, A.
name: Branford, D.
name: Briscoe, W. J.
name: Brudvik, J.
name: Cherepnya, S.
name: Demissie, B.
name: Dieterle, M.
name: Downie, E. J.
name: Drexler, P.
name: Fil'kov, L. V.
name: Fix, A.
name: Glazier, D. I.
name: Hamilton, D.
name: Heid, E.
name: Hornidge, D.
name: Howdle, D.
name: Huber, G. M.
name: Jaegle, I.
name: Jahn, O.
name: Jude, T. C.
name: Kaeser, A.
name: Kashevarov, V. L.
name: Kondratiev, R.
name: Korolija, M.
name: Kruglov, S. P.
name: Krusche, B.
name: Kulbardis, A.
name: Lisin, V.
name: Livingston, K.
name: MacGregor, I. J. D.
name: Maghrbi, Y.
name: Mancell, J.
name: Manley, D. M.
name: Marinides, Z.
name: Martinez, M.
name: McGeorge, J. C.
name: McNicoll, E.
name: Metag, V.
name: Middleton, D. G.
name: Mushkarenkov, A.
name: Nefkens, B. M. K.
name: Nikolaev, A.
name: Novotny, R.
name: Oberle, M.
name: Ostrick, M.
name: Oussena, B.
name: Pedroni, P.
name: Pheron, F.
name: Polonski, A.
name: Prakhov, S.
name: Robinson, J.
name: Rosner, G.
name: Rost, M.
name: Rostomyan, T.
name: Schumann, S.
name: Sikora, M. H.
name: Sober, D.
name: Starostin, A.
name: Supek, I.
name: Thiel, M.
name: Thomas, A.
name: Unverzagt, M.
name: Watts, D. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Quasi-free photoproduction of $η$-mesons has been measured off nucleons bound in $^3$He nuclei for incident photon energies from the threshold region up to 1.4 GeV. The experiment was performed at the tagged photon facility of the Mainz MAMI accelerator with an almost $4π$ covering electromagnetic calorimeter, combining the TAPS and Crystal Ball detectors. The $η$-mesons were detected in coincidence with the recoil nucleons. This allowed a comparison of the production cross section off quasi-free protons and quasi-free neutrons and a full kinematic reconstruction of the final state, eliminating effects from nuclear Fermi motion. In the $S_{11}$(1535) resonance peak, the data agree with the neutron/proton cross section ratio extracted from measurements with deuteron targets. More importantly, the prominent structure observed in photoproduction off quasi-free neutrons bound in the deuteron is also clearly observed. Its parameters (width, strength) are consistent with the expectations from the deuteron results. On an absolute scale the cross sections for both quasi-free protons and neutrons are suppressed with respect to the deuteron target pointing to significant nuclear final state interaction effects.
description: accepted for publication in Eur. Phys. J. A
Collisional Penrose process of extended test particles near an extremal Kerr black hole
Creators: name: Sang, Aofei
name: Jiang, Jie
name: Zhang, Ming
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the collisional Penrose process of extended test particles near extremal Kerr black holes using the pole-dipole-quadrupole approximation. We analyze the motion of the test particles and examine the dynamics and maximum efficiency of energy extraction in this process. Our results demonstrate that the maximum extracted energy in the collisional Penrose process is influenced by the spin s and quadrupolar parameter CES2 of the test particles. Specifically, we observe that, at a fixed collisional position, the energy extraction efficiency decreases as the spin increases for either the pole-dipole or the pole-dipole-quadrupole approximation case. Furthermore, for a fixed spin, the energy extraction efficiency is higher in the pole-dipole-quadrupole approximation compared to the pole-dipole approximation. These findings provide insight into the role of the internal structures of the test particles in the collisional Penrose process.
description: 7 pages and 3 figures
Asymptotic techniques for selective inference
Creators: name: Zhong, Dewei
Publisher: name: No Publisher Supplied
Year: 2020

description: Asymptotic approaches are widely used in statistics. Generally, I recognize two applications of asymptotic. First, asymptotics can solve some problems which cannot be solved exactly in mathematics. For example, density and mass functions and distribution functions of some statistics often cannot be found exactly. Asymptotic approaches will be used for finding the asymptotic density and mass functions and distribution functions under such circumstances. The error between asymptotic methods and truth is controlled within tolerance, like O(1/n) or something else. Chapter 1 presents this kind of problem. The two-stage Mann-Whitney statistic has known mass and distribution functions. But these exact representations are given only recursively, and the recursion is complicated. It means that we cannot express them mathematically. With the help of an asymptotic method, the Edgeworth expansion, we can express the distribution functions. Moments and cumulants are necessary for the Edgeworth expansion and I focus on the calculation of them in Chapter 1.The second use of asymptotics is to compare two different methods or functions and find how they are close. When various methods are proposed to approximate something, one may just determine whether they are asymptotically correct. If asymptotically, the methods are correct, the error between them should be determined. Furthermore, how close they are to the truth must be determined. Chapter 2 is a typical example of this kind of problem. The traditional approach is called the studentized bootstrap and the new one is the tilted bootstrap. We compare the two approaches in multi-dimension and conclude the difference between their p-values is o(1) based on some assumptions.Chapters 3 and 4 discuss a significance test to perform a variable selection for regression. The test is called the covariance test. The test is based on the exponential distribution, but the statistic does not follow it exactly but asymptotically. We investigate the properties of the test statistic and proposeanother covariance test based on the gamma distribution. This topic is a combination of the two problems mentioned above. We compare all available methods and provide an alternative better approach.Chapter 5 presents a method for calculating the order of error numerically. It is derived from Chapters 3 and 4. We have to find the order of error numerically when it is too hard to find it analytically. Many examples are illustrated to demonstrate effectiveness.
Open-beauty production in $p$Pb collisions at $\sqrt{s_{NN}}$=5 TeV: effect of the gluon nuclear densities
Creators: name: del Valle, Z. Conesa
name: Ferreiro, E. G.
name: Fleuret, F.
name: Lansberg, J. P.
name: Rakotozafindrabe, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present our results on open beauty production in proton-nucleus collisions for the recent LHC $p$Pb run at $\sqrt{s_{NN}}$=5 TeV. We have analysed the effect of the modification of the gluon PDFs in nucleus at the level of the nuclear modification factor. Because of the absence of measurement in $pp$ collisions at the same energy, we also propose the study of the forward-to-backward yield ratio in which the unknown proton-proton yield cancel. Our results are compared with the data obtained by LHCb collaboration and show a good agreement.
description: 6 pages, 3 figures, Proceedings IS2013 submitted to Nuclear Physics A
On Enhancing Reliability in B5G NTNs with Packet Duplication via Multi-Connectivity
Creators: name: Majamaa, Mikko
name: Martikainen, Henrik
name: Puttonen, Jani
name: Hämälainen, Timo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Non-Terrestrial Networks (NTNs) can be used to provide ubiquitous 5G and beyond services to un(der)served areas. To ensure reliable communication in such networks, packet duplication (PD) through multi-connectivity is a promising solution. However, the existing PD schemes developed for terrestrial environments may not be reactive enough for the NTN environment where propagation delays are significantly longer. This paper proposes a dynamic PD activation scheme for NTNs based on hybrid automatic repeat request feedback. The scheme aims to reduce the number of duplicated packets while maintaining high reliability. To evaluate the proposed scheme, simulations are conducted in a scenario with two transparent payload lowearth orbit satellites. The results show a significant reduction of 87.2% in the number of duplicated packets compared to blind duplication, with only marginal compromise in reliability.
description: Accepted for publication in 2023 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE 2023)
Does Domestic Food Production Contribute to Improved Life Expectancy? Evidence from Low-Income Food-Deficit Countries (LIFDCS In Africa
Creators: name: Nzeh, Innocent Chile
name: Nzeh, Innocent Chile
Publisher: name: Unknown
Year: 2023
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Health Economics and Policy
subject: Risk and Uncertainty
subject: Food production
subject: Government intervention
subject: GDP per capita
subject: food security

description: This paper examined the role food production could play in enhancing longevity in Africa’s low income and food poverty countries. The paper used two cointegrating panel models, namely: dynamic ordinary least squares (DOLS) and fully modified ordinary least squares (FMOLS) in addition to panel OLS and the sample covers the period from 2000-2020. Findings of the study reveal that in all the three panel models used, food production index impacted positively and significantly on life expectancy in the selected countries. Also, while GDP per capita did not positively influence life expectancy; government expenditure on health improved it. The positive impact of nutritional food on life expectancy is thus established. The study is therefore of the view that the government in these countries should enunciate appropriate policies to enhance food security while stepping-up health intervention measures. In addition, there is need for institutional upgrade to ensure that wealth is distributed evenly in these countries.
Open-Country Poverty in a Relatively Affluent Area -- The East North Central States
Creators: name: Fitzwilliams, Jeannette
name: Fitzwilliams, Jeannette
Publisher: name: Unknown
Year: 1971
Subjects: subject: Consumer/Household Economics
subject: Food Security and Poverty
subject: Labor and Human Capital
subject: Poverty
subject: age
subject: East North Central States
subject: education
subject: employment
subject: farming
subject: homegrown food
subject: households
subject: housing
subject: human resources
subject: rural areas
subject: cross-sectional

description: Poverty among open-country households in the East North Central States--11 percent--was slightly above incidence found among U.S. whites in general. Incidence of poverty was greatest among the aged, disabled, and small farmers of all ages who made farming their major source of earnings. Eighty-seven percent of the respondent households in this 1967 survey had earnings. Most respondents were nonfarmers. Although 42 percent received some income from a farm, only 12 percent got the major portion of their earnings from this source. Seventy-two percent of poor households with heads under age 45, and 57 percent of those with heads aged 45-64 reported no income other than earnings, interest, or dividends. Even more received no welfare payments. In this area, where two-fifths of all houses were built before 1901, substandard housing was prevalent among the poor.
Properties of the jet in M87 revealed by its helical structure imaged with the VLBA at 8 and 15 GHz
Creators: name: Nikonov, A. S.
name: Kovalev, Y. Y.
name: Kravchenko, E. V.
name: Pashchenko, I. N.
name: Lobanov, A. P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present full-track high-resolution radio observations of the jet of the galaxy M87 at 8 and 15 GHz. These observations were taken over three consecutive days in May 2009 using the Very Long Baseline Array (VLBA), one antenna of the Very Large Array (VLA), and the Effelsberg 100 m telescope. Our produced images have dynamic ranges exceeding 20,000:1 and resolve linear scales down to approximately 100 Schwarzschild radii, revealing a limb-brightened jet and a faint, steep spectrum counter-jet. We performed jet-to-counter-jet analysis, which helped estimate the physical parameters of the flow. The rich internal structure of the jet is dominated by three helical threads, likely produced by the Kelvin-Helmholtz (KH) instability developing in a supersonic flow with a Mach number of approximately 20 and an enthalpy ratio of around 0.3. We produce a CLEAN imaging bias-corrected 8-15GHz spectral index image, which shows spectrum flattening in regions of helical thread intersections. This further supports the KH origin of the observed internal structure of the jet. We detect polarised emission in the jet at distances of approximately 20 milliarcseconds from the core and find Faraday rotation which follows a transverse gradient across the jet. We apply Faraday rotation correction to the polarisation position angle and find that the position angle changes as a function of distance from the jet axis, which suggests the presence of a helical magnetic field.
description: 15 pages, 10 figures, 1 table, MNRAS: Accepted 2023 October 03. Received 2023 September 27; in original form 2023 March 25
Exact hydrodynamics and onset of phase separation for an active exclusion process
Creators: name: Mason, James
name: Erignoux, Clement
name: Jack, Robert
name: Bruna, Maria
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a lattice model of active matter with exclusion and derive its hydrodynamic description exactly. The hydrodynamic limit leads to an integro-differential equation for the density of particles with a given orientation. Volume exclusion results in nonlinear mobility dependent on spatial density. Such models of active matter can support motility-induced phase separation, which occurs despite the absence of attractive interactions. We study the onset of phase separation with linear stability analysis and numerical simulations.
description: Since submitting, we discovered an error in the code used to produce the PDE solutions. This does not change the article's central message, and we apologise for the oversight. Figures and descriptions have been corrected in the revised article. Only Figure 1 has significantly changed and the alignment between the linear stability analysis and PDE solutions has improved. 32 Pages, 8 figures
Corporations with Farming Operations
Creators: name: Coffman, George W.
name: Coffman, George W.
Publisher: name: Unknown
Year: 1971
Subjects: subject: Farm Management
subject: Labor and Human Capital
subject: Farming corporations
subject: corporate farms
subject: business organization
subject: nonfarm businesses
subject: agricultural structure
subject: farm ownership
subject: survey of farming corporations

description: In 1968, some 13,300 farming corporations accounted for 1 percent of all commercial farms and operated 7 percent of the farmland. California and Florida had about one-fifth of the total number and some of the largest corporate farming operations. Nearly two-thirds of farming corporations were family owned and controlled. Since farming corporations tend to be closely held, the owners were usually involved in management. However, only one-third of the 12 average employees were either stockholders or stockholder relatives. Farming was the only business activity for the two-thirds of the corporations. Others had farm-related business and nonfarm-related business. The farm product sales of corporations was about $3.3 billion or 8 percent of total sales from all farms in 1967.
Minimal alternating current injection into carbon nanotubes
Creators: name: Fukuzawa, Kota
name: Kato, Takeo
name: Jonckheere, Thibaut
name: Rech, Jérôme
name: Martin, Thierry
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study theoretically the effect of electronic interactions in 1d systems on electron injection using periodic Lorentzian pulses, known as Levitons. We consider specifically a system composed of a metallic single-wall carbon nanotube, described with the Luttinger liquid formalism, a scanning tunneling microscope (STM) tip, and metallic leads. Using the out-of-equilibrium Keldysh Green function formalism, we compute the current and current noise in the system. We prove that the excess noise vanishes when each Leviton injects an integer number of electrons from the STM tip into the nanotube. This extends the concept of minimal injection with Levitons to strongly correlated, uni-dimensional non-chiral systems. We also study the time-dependent current profile, and show how it is the result of interferences between pulses non-trivially reflected at the nanotube-lead interface.
description: 14 pages, 6 figures
Interference in Graphs
Creators: name: Acharya, B. D.
name: A., Germina K.
name: Kurian, Rency
name: Paul, Viji
name: Zaslavsky, Thomas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C78

description: Given a graph $I=(V, E),$ $\emptyset \ne D \subseteq V,$ and an arbitrary nonempty set $X,$ an injective function $f: V\to 2^X \setminus \{\emptyset\}$ is an interference of $D$ with respect to $I,$ if for every vertex $u\in V\setminus D$ there exists a neighbor $v\in D$ such that $f(u)\cap f(v) \ne \emptyset.$ We initiate a study of interference in graphs. We study special cases of the difficult problem of finding a smallest possible set $X,$ and we decide when, given a graph $G=(V,E(G))$ (resp., its line graph $L(G)$) the open neighborhood function $N_G: V \to 2^V$ (resp., $N_{L(G)}: E \to 2^E$) or its complementary function is an interference with respect to the complete graph $I=K_n.$
description: 17 pp
Integrability and non-integrability for marginal deformations of 4d $\mathcal N = 2$ SCFTs
Creators: name: Pal, Jitendra
name: Roychowdhury, Sourav
name: Lala, Arindam
name: Roychowdhury, Dibakar
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study integrability and non-integrability for marginal deformations of 4d $\mathcal N =2$ SCFTs. We estimate various chaos indicators for the bulk theory which clearly shows the onset of a chaotic string dynamics in the limit of large deformations. On the other hand, for small values of the deformation parameter, the resulting dynamics exhibits a non-chaotic motion and therefore presumably an underlying integrable structure. Our analysis reveals that the $γ$-deformation in the type-IIA theory could be interpreted as an interpolation between a class of integrable $\mathcal N =2$ SCFTs and a class of non-integrable $\mathcal N =1$ SCFTs at strong coupling. We also generalise our results in the presence of the flavor branes.
description: 1+22 pages; 27 Figs; Reference added; Appendices added; v2; Accepted to JHEP
Glauber Gluons and Multiple Parton Interactions
Creators: name: Gaunt, Jonathan R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that for hadronic transverse energy $E_T$ in hadron-hadron collisions, the classic Collins-Soper-Sterman (CSS) argument for the cancellation of Glauber gluons breaks down at the level of two Glauber gluons exchanged between the spectators. Through an argument that relates the diagrams with these Glauber gluons to events containing additional soft scatterings, we suggest that this failure of the CSS cancellation actually corresponds to a failure of the `standard' factorisation formula with hard, soft and collinear functions to describe $E_T$ at leading power. This is because the observable receives a leading power contribution from multiple parton interaction (or spectator-spectator Glauber) processes. We also suggest that the same argument can be used to show that a whole class of observables, which we refer to as MPI sensitive observables, do not obey the standard factorisation at leading power. MPI sensitive observables are observables whose distributions in hadron-hadron collisions are disrupted strongly by the presence of multiple parton interactions (MPI) in the event. Examples of further MPI sensitive observables include the beam thrust $B^+_{a,b}$ and transverse thrust.
description: 24 pages, 8 figures
JAX FDM: A differentiable solver for inverse form-finding
Creators: name: Pastrana, Rafael
name: Oktay, Deniz
name: Adams, Ryan P.
name: Adriaenssens, Sigrid
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: We introduce JAX FDM, a differentiable solver to design mechanically efficient shapes for 3D structures conditioned on target architectural, fabrication and structural properties. Examples of such structures are domes, cable nets and towers. JAX FDM solves these inverse form-finding problems by combining the force density method, differentiable sparsity and gradient-based optimization. Our solver can be paired with other libraries in the JAX ecosystem to facilitate the integration of form-finding simulations with neural networks. We showcase the features of JAX FDM with two design examples. JAX FDM is available as an open-source library at https://github.com/arpastrana/jax_fdm.
description: https://github.com/arpastrana/jax_fdm
Five Modular Redundancy with Mitigation Technique to Recover the Error Module
Creators: name: Haryono
name: Istiyanto, Jazi Eko
name: Harjoko, Agus
name: Putra, Agfianto Eko
Publisher: name: arXiv
Year: 2014
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: Hazard radiation can lead the system fault therefore Fault Tolerance is required. Fault Tolerant is a system, which is designed to keep operations running, despite the degradation in the specific module is happening. Many fault tolerances have been developed to handle the problem, to find the most robust and efficient in the possible technology. This paper will present the Five Modular Redundancy (FMR) with Mitigation Technique to Recover the Error Module. With Dynamic Partial Reconfiguration technology that have already available today, such fault tolerance technique can be implemented successfully. The project showed the robustness of the system is increased and module which is error can be recovered immediately.
description: 6 Pages
Quantum dissonance provide power to deterministic quantum computation with single qubit
Creators: name: Ali, Mazhar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Mixed state quantum computation can perform certain tasks which are believed to be efficiently intractable on a classical computer. For a specific model of mixed state quantum computation, namely, {\it deterministic quantum computation with a single qubit} (DQC1), recent investigations suggest that quantum correlations other than entanglement might be responsible for the power of DQC1 model. However, strictly speaking, the role of entanglement in this model of computation was not entirely clear. We provide conclusive evidence that there are instances where quantum entanglement is not present in any part of this model, nevertheless we have advantage over classical computation. This establishes the fact that quantum dissonance (quantum correlations) present in fully separable states provide power to DQC1 model.
description: 12 pages, 3 figures
Bianchi-I cosmologies, magnetic fields and singularities
Creators: name: Casadio, Roberto
name: Kamenshchik, Alexander
name: Mavrogiannis, Panagiotis
name: Petriakova, Polina
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the effects of a spatially homogenous magnetic field in Bianchi-I cosmological models. The cases of a pure magnetic field and two models with additional dust and a massless scalar field (stiff matter) are also considered. At the beginning of the cosmological evolution,i.e., in the neighborhood of the singularity, the universe is described by one of Kasner's solutions, and asymptotically by another Kasner solution when the volume of the universe tends to infinity. The transition law between these two Kasner regimes is established, and shown to coincide with the analogous law for the empty Bianchi-II universe. The universe filled with dust and a magnetic field undergoes the process of isotropization, while the presence of a massless scalar field induces a modification of the relations between Kasner indices in the two asymptotic regimes. In all of these cases, we analyze the approach to the singularity in some detail and comment on the issue of the possible singularity crossing.
description: 13 pages, final version, to be published in Physical Reveiw D
Stable local moments of vacancies and hollow-site impurities in graphene
Creators: name: Mashkoori, M.
name: Jafari, S. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Taking into account the possibility of a p-wave hybridization function $V(\vec k)$ of ad-atom with Dirac electrons in graphene -- which arises for vacancies and hollow-site impurities -- we study the nature of magnetic moment formation within the single impurity Anderson model (SIAM). Compared to the s-wave hybridization function, we find that the local moments formed within the Hartree mean field are robust against the change in the parameters of the model. Further we investigate the stability of the local moments with respect to quantum fluctuations by going beyond the Hartree approximation. We find that for parameter regimes where local moments formed by top-site ad-atoms are completely washed out by quantum fluctuations, those formed by vacancies (or hollow-site impurities) survive the quantum fluctuations captured by post-Hartree approximation. Hence vacancies and hollow-site ad-atoms are suitable candidates to produce stable local moments.
description: 7 page, 6 figures
Generalized Teleparallel de Sitter geometries
Creators: name: Coley, Alan A.
name: Landry, Alexandre
name: Hoogen, Robert J. van den
name: McNutt, David D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Theories of gravity based on teleparallel geometries are characterized by the torsion, which is a function of the coframe, derivatives of the coframe, and a zero curvature and metric compatible spin connection. The appropriate notion of a symmetry in a teleparallel geometry is that of an affine symmetry. Due to the importance of the de Sitter geometry and Einstein spaces within general relativity, we shall describe teleparallel de Sitter geometries and discuss their possible generalizations. In particular, we shall analyse a class of Einstein teleparallel geometries which have a 4-dimensional Lie algebra of affine symmetries, and display two one-parameter families of explicit exact solutions.
description: 24 pages, no figure, Will appear soon in EPJC
PRISMA Checklist for Strategy and Program for Malaria Control and Elimination in Endemic Countries, Africa and Asia: A Systematic Literature Review
Creators: name: Susanna, Dewi
Publisher: name: figshare
Year: 2023
Subjects: Social determinants of health
Public health not elsewhere classified

description: This PRISMA Checklist developed as supplementary file for article entitled: "Strategy and Program for Malaria Control and Elimination in Endemic Countries, Africa and Asia: A Systematic Literature Review'.
Ferromagnetic resonance spin pumping in CoFeB with highly resistive non-magnetic electrodes
Creators: name: Kim, Dong-Jun
name: Kim, Sang-Il
name: Park, Seung-Young
name: Lee, Kyeong-Dong
name: Park, Byong-Guk
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The relative contribution of spin pumping and spin rectification from the ferromagnetic resonance of CoFeB/non-magnetic bilayers was investigated as a function of non-magnetic electrode resistance. Samples with highly resistive electrodes of Ta or Ti exhibit a stronger spin rectification signal, which may result in over-(or under-)estimation of the spin Hall angle of the materials, while those with low resistive electrodes of Pt or Pd show the domination of the inverse spin Hall effect from spin pumping. By comparison with samples of single FM layer and an inverted structure, we provide a proper analysis method to extract spin pumping contribution.
description: 10 pages, 4 figures
Explicit Mapping of Acoustic Regimes For Wind Instruments
Creators: name: Missoum, Samy
name: Vergez, Christophe
name: Doc, Jean-Baptiste
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: This paper proposes a methodology to map the various acoustic regimes of wind instruments. The maps can be generated in a multi-dimensional space consisting of design, control parameters, and initial conditions. The bound- aries of the maps are obtained explicitly in terms of the parameters using a support vector machine (SVM) classifier as well as a dedicated adaptive sam- pling scheme. The approach is demonstrated on a simplified clarinet model for which several maps are generated based on different criteria. Examples of computation of the probability of occurrence of a specific acoustic regime are also provided. In addition, the approach is demonstrated on a design optimization example for optimal intonation.
IRISCAST- IRIS-Carbon-Audit-SnapshoT
Creators: name: Hays, Jonathan
name: Walton, Nicholas
name: Jackson, Adrian
Publisher: name: Zenodo
Year: 2022

description: Making good decisions around infrastructure procurement and provision requires understanding, as much as possible, the full carbon costs for operating, maintaining, and using the infrastructure; going beyond accounting for electricity and cooling, and including the full chain of costs embodied in the infrastructure. Enabling good decision making therefore requires a source of accurate real-world data on infrastructure climate impacts.
Lunch Programs in the Nation's Schools
Creators: name: Freund, William H.
name: Freund, William H.
Publisher: name: Unknown
Year: 1971
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Lunch service
subject: National School Lunch Program
subject: schools

description: Noontime food services were provided in about 75 percent of the Nation’s 105,000 public and private elementary and secondary schools during a survey in March 1968. Most of these schools with food service participated in the National School Lunch Program (NSLP). Schools with food service had 41 million pupils enrolled--over 80 percent of the estimated 50.7 million pupils in all schools. Nearly 20 million pupils ate plate lunches daily. The availability of food service will increase in the future, but not as rapidly as in the past. Most of this gain will probably be within the NSLP. Impetus for increased pupil participation and availability of food service will be provided through new eligibility requirements for free lunches in the NSLP and additional funding to implement food services.
Dynamical Fractal: Theory and Case Study
Creators: name: Yin, Junze
Publisher: name: arXiv
Year: 2023
Subjects: subject: Dynamical Systems (math.DS)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: Urbanization is a phenomenon of concern for planning and public health: projections are difficult because of policy changes and natural events, and indicators are multiple. There are previous studies of development that used fractals, but none for this specific problem, nor extrapolating the future trend. In the first part of this paper, we construct a theoretical framework for analyzing dynamic (changing) fractals and extrapolating their future trends based on their fractal dimension, a measure of the complexity of the fractal. We believe this approach holds enormous potential for applications in analyzing changing fractals in the real world, such as urban growth, cells, cancers, etc., all of which are invaluable to research. This theoretical framework may shed light on a factor overlooked in past research: the trend of how fractals change. In the second part of this paper, we apply this theoretical framework to study the urbanization of Boston. We compare several maps and measurements of fractal dimensions, produce code that reads the maps and divides the city into subsections, and ultimately graph the fractal dimension over time using both differential and difference equations. Finally, we postulate the logistic equation as a model to fit the evolution of the fractal dimension, as well as the total population derived from census data, which serves as a component for comparing dynamical fractals.
Deformed Bose gas models aimed at taking into account both compositeness of particles and their interaction
Creators: name: Gavrilik, A. M.
name: Mishchenko, Yu. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the deformed Bose gas model with the deformation structure function that is the combination of a q-deformation and a quadratically polynomial deformation. Such a choice of the unifying deformation structure function enables us to describe the interacting gas of composite (two-fermionic or two-bosonic) bosons. Using the relevant generalization of the Jackson derivative, we derive a two-parametric expression for the total number of particles, from which the deformed virial expansion of the equation of state is obtained. The latter is interpreted as the virial expansion for the effective description of a gas of interacting composite bosons with some interaction potential.
description: 7 pages, 2-column UJP style, contribution to Proceedings of the Internat. Conf. "Quantum Groups and Guantum Integrable systems" (June 18-21, 2013, Kiev, Ukraine)
Evidence for an oscillation of the magnetic axis of the white dwarf in the polar DP Leonis
Creators: name: Beuermann, K.
name: Dreizler, S.
name: Hessman, F. V.
name: Schwope, A. D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: From 1979 to 2001, the magnetic axis of the white dwarf in the polar DP Leo slowly rotated by 50 deg in azimuth, possibly indicating a small asynchronism between the rotational and orbital periods of the magnetic white dwarf. We have obtained phase-resolved orbital light curves between 2009 and 2013, which show that this trend has not continued in recent years. Our data are consistent with the theoretically predicted oscillation of the magnetic axis of the white dwarf about an equilibrium orientation, which is defined by the competition between the accretion torque and the magnetostatic interaction of the primary and secondary star. Our data indicate an oscillation period of ~60 yr, an amplitude of about 25 deg, and an equilibrium orientation leading the connecting line of the two stars by about 7 deg.
description: Accepted by A&A
An idealised wave-ice interaction model without subgrid spatial and temporal discretisations
Creators: name: Bennetts, Luke
name: O'Farrell, Siobhan
name: Uotila, Petteri
name: Squire, Vernon
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: A modified version of the wave-ice interaction model proposed by Williams et al (2013a,b) is presented for an idealised transect geometry. Wave attenuation due to ice floes and wave-induced ice fracture are both included in the wave-ice interaction model. Subgrid spatial and temporal discretisations are not required in the modified version of the model, thereby facilitating its future integration into large-scaled coupled models. Results produced by the new model are compared to results produced by the original model of Williams et al (2013b).
description: 8 pages, 3 figures
Channel assignment for throughput maximization in cognitive radio networks
Creators: name: Tan, Le Thanh
name: Le, Long Bao
Publisher: name: arXiv
Year: 2014
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper, we consider the channel allocation problem for throughput maximization in cognitive radio networks with hardware-constrained secondary users. Specifically, we assume that secondary users exploit spectrum holes on a set of channels where each secondary user can use at most one available channel for communication. We develop two channel assignment algorithms that can efficiently utilize spectrum opportunities on these channels. In the first algorithm, secondary users are assigned distinct sets of channels. We show that this algorithm achieves the maximum throughput limit if the number of channels is sufficiently large. In addition, we propose an overlapping channel assignment algorithm, that can improve the throughput performance compared to the non-overlapping channel assignment algorithm. In addition, we design a distributed MAC protocol for access contention resolution and integrate the derived MAC protocol overhead into the second channel assignment algorithm. Finally, numerical results are presented to validate the theoretical results and illustrate the performance gain due to the overlapping channel assignment algorithm.
description: arXiv admin note: substantial text overlap with arXiv:1404.1674
Anais do I Seminário Internacional sobre Violência, Tecnologias e Saúde no Contexto do Coronavírus (Covid-19)
Creators: name: Freitas, Maria Do Carmo Duarte
Publisher: name: figshare
Year: 2020
Subjects: subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences
subject: Health Care
subject: 100599 Communications Technologies not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 200102 Communication Technology and Digital Media Studies
subject: FOS: Media and communications

description: Anais do I Seminário Internacional sobre Violência, Tecnologias e Saúde no Contexto do Coronavírus (Covid-19) - apresentados em duas partes – a primeira abrangendo os resumos expandidos e a segunda os resumos simples.
TALE #6 : Irving, B., Davies, M. J., and Briggs, K. G. 2023. All about the ‘Best in N. America’ Faculty of ALES undergraduate  Range Team successes for 40+ years at the N. American Society for Range Management academic competitions: Who  they were and how they did it!
Creators: Irving, B. D., Davies, M. J., and Briggs, K. G.
Publisher: name: University of Alberta Library
Year: 2023

TALES OF ALES #6 is a story about 42 years of continued, demonstrable academic excellence in undergraduate teaching and learning in range management at the University of Alberta. It features the Faculty of ALES undergraduate ‘Range Teams’ and their instructors, the ‘winningest’ teams in N. America from 1981 – 2022 in the ‘Plant Identification’ and ‘Range Management Knowledge’ competitions of the North American Society of Range Management (SRM), competing against up to 22 University teams from the best Range Management Departments in Canada, Mexico and the USA. It describes the beginnings of the ‘Range Teams’ in the early 1980’s, initiated by and because of the visionary academic and instructional impact of Professor Art Bailey, who also started the University of Alberta range management program. Lisa Ratt is the 3rd Coach of the range team, continuing that role in 2023. The story documents the team members and their many podium successes in the SRM competitions. The names and photographs of all competitors are included in this 42 year long success story. Last author Briggs assembled the story and provides commentary about the stellar academic achievements of these students, and the recognition which they have brought to the Faculty of ALES and to the University of Alberta over very many years
Tackling Sampling Noise in Physical Systems for Machine Learning Applications: Fundamental Limits and Eigentasks
Creators: name: Hu, Fangjun
name: Angelatos, Gerasimos
name: Khan, Saeed A.
name: Vives, Marti
name: Türeci, Esin
name: Bello, Leon
name: Rowlands, Graham E.
name: Ribeill, Guilhem J.
name: Türeci, Hakan E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The expressive capacity of physical systems employed for learning is limited by the unavoidable presence of noise in their extracted outputs. Though present in physical systems across both the classical and quantum regimes, the precise impact of noise on learning remains poorly understood. Focusing on supervised learning, we present a mathematical framework for evaluating the resolvable expressive capacity (REC) of general physical systems under finite sampling noise, and provide a methodology for extracting its extrema, the eigentasks. Eigentasks are a native set of functions that a given physical system can approximate with minimal error. We show that the REC of a quantum system is limited by the fundamental theory of quantum measurement, and obtain a tight upper bound for the REC of any finitely-sampled physical system. We then provide empirical evidence that extracting low-noise eigentasks can lead to improved performance for machine learning tasks such as classification, displaying robustness to overfitting. We present analyses suggesting that correlations in the measured quantum system enhance learning capacity by reducing noise in eigentasks. The applicability of these results in practice is demonstrated with experiments on superconducting quantum processors. Our findings have broad implications for quantum machine learning and sensing applications.
description: 37 pages, 10 figures, 1 table. Significantly expanded version of arXiv:2301.00042 [quant-ph], covering physical systems operating in the classical and quantum regimes
Uncertainty-Guided Spatial Pruning Architecture for Efficient Frame Interpolation
Creators: name: Cheng, Ri
name: Jiang, Xuhao
name: He, Ruian
name: Zhou, Shili
name: Tan, Weimin
name: Yan, Bo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The video frame interpolation (VFI) model applies the convolution operation to all locations, leading to redundant computations in regions with easy motion. We can use dynamic spatial pruning method to skip redundant computation, but this method cannot properly identify easy regions in VFI tasks without supervision. In this paper, we develop an Uncertainty-Guided Spatial Pruning (UGSP) architecture to skip redundant computation for efficient frame interpolation dynamically. Specifically, pixels with low uncertainty indicate easy regions, where the calculation can be reduced without bringing undesirable visual results. Therefore, we utilize uncertainty-generated mask labels to guide our UGSP in properly locating the easy region. Furthermore, we propose a self-contrast training strategy that leverages an auxiliary non-pruning branch to improve the performance of our UGSP. Extensive experiments show that UGSP maintains performance but reduces FLOPs by 34%/52%/30% compared to baseline without pruning on Vimeo90K/UCF101/MiddleBury datasets. In addition, our method achieves state-of-the-art performance with lower FLOPs on multiple benchmarks.
description: ACM Multimedia 2023
Spectral synthesis provides 2-D videos on a 1-D screen with 360°-visibility and mirror-immunity
Creators: name: Grusche, Sascha
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Spatial-light-modulator (SLM)-based tunable sources have complex setups. A simpler setup, comprising an SLM-projector and a dispersive element, synthesizes light as effectively, based on a Superposition of Newtonian Spectra (SNS). As a generalization of SNS, two-dimensional (2-D) grayscale videos are spectrally encoded on a one-dimensional (1-D), translucent screen, and viewed through another dispersive element. This Projected-Image Circumlineascopy (PICS) produces semitransparent, rainbow-coloured, virtual 2-D videos that face every viewer anywhere around the 1-D screen. They are invariant under reflection of the 1-D screen in mirrors parallel to it. SNS bandwidth and PICS image geometry are calculated using geometric optics and Dispersion Diagrams.
description: Preprint, 9 pages, 15 figures, 27 references; patent application filed for SNS and PICS on Dec 31, 2013