cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum computed moments correction to variational estimates
Creators: name: Vallury, Harish J.
name: Jones, Michael A.
name: Hill, Charles D.
name: Hollenberg, Lloyd C. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The variational principle of quantum mechanics is the backbone of hybrid quantum computing for a range of applications. However, as the problem size grows, quantum logic errors and the effect of barren plateaus overwhelm the quality of the results. There is now a clear focus on strategies that require fewer quantum circuit steps and are robust to device errors. Here we present an approach in which problem complexity is transferred to dynamic quantities computed on the quantum processor - Hamiltonian moments, $\langle H^n\rangle$. From these quantum computed moments, estimates of the ground-state energy are obtained using the "infinum" theorem from Lanczos cumulant expansions which manifestly correct the associated variational calculation. With system dynamics encoded in the moments the burden on the trial-state quantum circuit depth is eased. The method is introduced and demonstrated on 2D quantum magnetism models on lattices up to 5 $\times$ 5 (25 qubits) implemented on IBM Quantum superconducting qubit devices. Moments were quantum computed to fourth order with respect to a parameterised antiferromagnetic trial-state. A comprehensive comparison with benchmark variational calculations was performed, including over an ensemble of random coupling instances. The results showed that the infinum estimate consistently outperformed the benchmark variational approach for the same trial-state. These initial investigations suggest that the quantum computed moments approach has a high degree of stability against trial-state variation, quantum gate errors and shot noise, all of which bodes well for further investigation and applications of the approach.
description: 10 pages, 5 figures
Current Changes in New Zealand Agriculture: A Review
Creators: name: Johnson, R.W.M.
name: Johnson, R.W.M.
Publisher: name: Unknown
Year: 1991
Subjects: Agricultural and Food Policy

description: In the period under review the New Zealand agricultural sector has continued to be sensitive to changes in macroeconomic policies in the economy as a whole. This has not altered with the change of Government in October 1990. The combined forces of low commodity prices, increased costs, and government policy changes brought about a period of readjustment through 1985-86 and 1986-87 which now appears to be completed. Recovery was assisted by favourable terms of trade through 1988-89 and 1989-90. Output from the agricultural sector appears to have stabilised rather than decreased; the downturn in the terms of trade in the 1990-91 season has brought about a further reduction in investment and incomes.
Complementary colors of colorons: the elementary excitations of the SU(3) Haldane--Shastry model
Creators: name: Schuricht, Dirk
name: Greiter, Martin
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We propose two possible trial wave functions for the elementary excitations of the SU(3) Haldane--Shastry model, but then argue on very general grounds that only one or the other can be a valid excitation. We then prove explicitly that the trial wave function describing a coloron excitation which transforms according to representation $\bar{3}$ under SU(3) rotations if the spins of the original model transform according to representation 3, is exact. If a basis for the spins on the chain is spanned by the colors blue, red, and green, a basis for the coloron excitations is hence given by the complementary colors yellow, cyan, and magenta. We obtain the dispersion and the exclusion statistics among polarized colorons. Furthermore, we compare our results with the asymptotic Bethe Ansatz and discuss the generalization to SU($n$).
On Free Energy for Deformed JT Gravity
Creators: name: Alishahiha, Mohsen
name: Astaneh, Amin Faraji
name: Jafari, Ghadir
name: Naseh, Ali
name: Taghavi, Behrad
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we study a particular deformation of the Jackiw-Teitelboim gravity recently considered by Maxfield, Turiaci and independently by Witten. We will compute the partition function of this model as well as its higher order correlators to all orders in genus expansion in the low temperature limit for small perturbations. In this limit, the results match with those obtained from the Airy limit of a Hermitian random matrix ensemble. Using this result, we will also study the free energy of the model. One observes that although the annealed free energy has pathological behaviors, under certain assumptions, the quenched free energy evaluated by replica trick exhibits the desired properties at low temperatures.
description: 26 pages, 4 figures. fig.4 is updated. more explanations and clarifying comments about dual matrix model, more references, published version
Quantum transport of slow charge carriers in quasicrystals and correlated systems
Creators: name: De Laissardière, Guy Trambly
name: Julien, Jean-Pierre
name: Mayou, Didier
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We show that the semi-classical model of conduction breaks down if the mean free path of charge carriers is smaller than a typical extension of their wavefunction. This situation is realized for sufficiently slow charge carriers and leads to a transition from a metallic like to an insulating like regime when scattering by defects increases. This explains the unconventional conduction properties of quasicrystals and related alloys. The conduction properties of some heavy fermions or polaronic systems, where charge carriers are also slow, present a deep analogy.
description: 4 pages
EC Agricultural Policy in 1990/91: Growing Need for a Real Policy Reform
Creators: name: Manegold, Dirk
name: Manegold, Dirk
Publisher: name: Unknown
Year: 1991
Subjects: Agricultural and Food Policy

description: The paper is on three subjects. Topical information is given on the development and management of major EC agricultural markets and on recent changes in the Common Agricultural Policy. The EC's inflexible position in the GATT negotiations which caused the Uruguay Round to fail is dealt with and the present situation of the agriculture and food economy in East Germany is considered.
Heavy Quarkonium Production in Single Transverse Polarized High Energy Scattering
Creators: name: Yuan, Feng
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We formulate the single transverse spin asymmetry in heavy quarkonium production in lepton-nucleon and nucleon-nucleon collisions in the non-relativistic limit. We find that the asymmetry is very sensitive to the production mechanism. The final state interactions with the heavy quark and antiquark cancel out among themselves when the pair are produced in a color-single configuration, or cancel out with the initial state interaction in pp scattering when they are in color-octet. As a consequence, the asymmetry is nonzero in ep collisions only in the color-octet model, whereas in pp collisions only in the color-singlet model.
description: 10 pages, 4 figures
Another Look at Price Levelling and Price Averaging in the Sydney Meat Market
Creators: name: Griffith, Garry R.
name: Green, W.
name: Duff, G.L.
name: Griffith, Garry R.
name: Green, W.
name: Duff, G.L.
Publisher: name: Unknown
Year: 1991
Subjects: Demand and Price Analysis

description: Simultaneous equation techniques are used to re-examine the behaviour of monthly wholesale and retail price spreads for beef, lamb and pork in Sydney over the period 1971-1988, so as to understand the factors determining the relationships between the prices at the different market levels. Hypotheses tested relate to price levelling and price averaging, and to marketing cost and turnover effects. Using the preferred three-stage least squares estimates, price levelling is confirmed at both wholesale and retail for all meats, however contrary to earlier results there is no evidence of price averaging in any of the meats. Costs are only important determinants for beef at wholesale and lamb at retail, and only the beef and lamb wholesale spreads and the lamb retail spread are negatively influenced by turnover. A structural change test reveals significantly different behavioural responses in the 1980s compared to the 1970s, so the model is re-estimated for just the 1980s. The results generally agree with those from the longer sample, with the only change being at the retail level where costs become significant for beef as well as lamb. However the level of explanatory power for the 1980-1988 models is substantially reduced from that of the full sample models.
Phase transitions and quantum measurements
Creators: name: Allahverdyan, Armen E.
name: Balian, Roger
name: Nieuwenhuizen, Theo M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In a quantum measurement, a coupling $g$ between the system S and the apparatus A triggers the establishment of correlations, which provide statistical information about S. Robust registration requires A to be macroscopic, and a dynamical symmetry breaking of A governed by S allows the absence of any bias. Phase transitions are thus a paradigm for quantum measurement apparatuses, with the order parameter as pointer variable. The coupling $g$ behaves as the source of symmetry breaking. The exact solution of a model where S is a single spin and A a magnetic dot (consisting of $N$ interacting spins and a phonon thermal bath) exhibits the reduction of the state as a relaxation process of the off-diagonal elements of S+A, rapid due to the large size of $N$. The registration of the diagonal elements involves a slower relaxation from the initial paramagnetic state of A to either one of its ferromagnetic states. If $g$ is too weak, the measurement fails due to a ``Buridan's ass'' effect. The probability distribution for the magnetization then develops not one but two narrow peaks at the ferromagnetic values. During its evolution it goes through wide shapes extending between these values.
description: 12 pages, 2 figures
Processes and patterns of dialog between deaf and hearing siblings during play
Creators: name: Van Horn, Dennis
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to examine the processes and patterns of communicative interaction which preschool and elementary school-aged deaf and hearing siblings utilized to initiate, maintain and terminate dialogs during play. Specifically, the focus was to determine if the processes and patterns of communication differed when a deaf sibling interacted with an older hearing sibling who has been exposed primarily to a simultaneous visual-auditory (SimVA) pattern of communication, as compared to when a deaf sibling interacted with a younger hearing sibling who has been exposed to both a SimVA and a sequential visual (Seq V) pattern of communication. Video-taped playbouts were observed between each of two sibling dyads at play within a single family: (a) an older dyad composed of a seven-year-old hearing child and her five-year-old deaf sister, and (b) a younger dyad with the second-born deaf sister and her three-year-old hearing brother. The video-tapes were coded to determine: the kinds of play siblings engaged in; the use and expression of behavioral and communicative elements of attention-getting, exchange of information, and termination processes of dialogs; who initiated and terminated dialogs; the occurrence of turn-taking during message delivery; and the expression of patterns of communication used by siblings during dialogs. Only three of five possible kinds of play were actually noted, of which social play was the most frequently observed kind of play taking place between siblings within both dyads. In the older hearing and deaf sibling dyad, it was found that the older hearing sister predominately used visual processes and patterns of communicative interaction when conversing with her deaf sister, whereas the deaf sibling relied extensively on visual-auditory processes and patterns of communication when conversing with her hearing sister. In the younger dyad, visual-auditory patterns of communication predominated both hearing and deaf siblings' expression of processes and patterns of communication with each other. New terminology reflecting siblings' behavioral and communicative patterns of communication are introduced. This study represents the first known research examining the processes and patterns of deaf and hearing siblings' behavioral and communicative interactions of dialog. The findings are discussed in relation to potential applications to early intervention programs for hearing families with deaf and hearing siblings and to future research directions. Overall, the findings from this study appear to indicate that deaf and hearing siblings communicate in ways largely influenced by developmental maturation and the communicative environments to which each child has been exposed during language acquisition processes. The findings are also consistent with Vygotsky's theory of a sociocultural origin of language development.
Deep learning for detection and segmentation of artefact and disease instances in gastrointestinal endoscopy
Creators: name: Ali, Sharib
name: Dmitrieva, Mariia
name: Ghatwary, Noha
name: Bano, Sophia
name: Polat, Gorkem
name: Temizel, Alptekin
name: Krenzer, Adrian
name: Hekalo, Amar
name: Guo, Yun Bo
name: Matuszewski, Bogdan
name: Gridach, Mourad
name: Voiculescu, Irina
name: Yoganand, Vishnusai
name: Chavan, Arnav
name: Raj, Aryan
name: Nguyen, Nhan T.
name: Tran, Dat Q.
name: Huynh, Le Duy
name: Boutry, Nicolas
name: Rezvy, Shahadate
name: Chen, Haijian
name: Choi, Yoon Ho
name: Subramanian, Anand
name: Balasubramanian, Velmurugan
name: Gao, Xiaohong W.
name: Hu, Hongyu
name: Liao, Yusheng
name: Stoyanov, Danail
name: Daul, Christian
name: Realdon, Stefano
name: Cannizzaro, Renato
name: Lamarque, Dominique
name: Tran-Nguyen, Terry
name: Bailey, Adam
name: Braden, Barbara
name: East, James
name: Rittscher, Jens
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The Endoscopy Computer Vision Challenge (EndoCV) is a crowd-sourcing initiative to address eminent problems in developing reliable computer aided detection and diagnosis endoscopy systems and suggest a pathway for clinical translation of technologies. Whilst endoscopy is a widely used diagnostic and treatment tool for hollow-organs, there are several core challenges often faced by endoscopists, mainly: 1) presence of multi-class artefacts that hinder their visual interpretation, and 2) difficulty in identifying subtle precancerous precursors and cancer abnormalities. Artefacts often affect the robustness of deep learning methods applied to the gastrointestinal tract organs as they can be confused with tissue of interest. EndoCV2020 challenges are designed to address research questions in these remits. In this paper, we present a summary of methods developed by the top 17 teams and provide an objective comparison of state-of-the-art methods and methods designed by the participants for two sub-challenges: i) artefact detection and segmentation (EAD2020), and ii) disease detection and segmentation (EDD2020). Multi-center, multi-organ, multi-class, and multi-modal clinical endoscopy datasets were compiled for both EAD2020 and EDD2020 sub-challenges. The out-of-sample generalization ability of detection algorithms was also evaluated. Whilst most teams focused on accuracy improvements, only a few methods hold credibility for clinical usability. The best performing teams provided solutions to tackle class imbalance, and variabilities in size, origin, modality and occurrences by exploring data augmentation, data fusion, and optimal class thresholding techniques.
description: 32 pages
The targum (1951:Oct. 2 - 1951:Oct. 30)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1951

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
Entanglement of topological phase factors
Creators: name: Tsomokos, D. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The topological phase factor induced on interfering electrons by external quantum electromagnetic fields has been studied. Two and three electron interference experiments inside distant cavities are considered and the influence of correlated photons on the phase factors is investigated. It is shown that the classical or quantum correlations of the irradiating photons are transferred to the topological phases. The effect is quantified in terms of Weyl functions for the density operators of the photons and illustrated with particular examples. The scheme employs the generalized phase factor as a mechanism for information transfer from the photons to the electric charges. In this sense, the scheme may be useful in the context of flying qubits (corresponding to the photons) and stationary qubits (electrons), and the conversion from one type to the other.
description: 16 pages, 6 figures
Lepton flavor model with modular $A_4$ symmetry in large volume limit
Creators: name: Asaka, Takehiko
name: Heo, Yongtae
name: Yoshida, Takahiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the modular symmetry associated with the compactification of extra dimensions as the flavor symmetry on lepton sector. Especially, we propose a model based on the modular $A_4$ symmetry with three right-handed neutrinos and a gauge singlet Higgs, which works well in the so-called large volume limit of the extra dimensions, i.e., $\mbox{Im}τ\to \infty$ for a modulus $τ$. The right-handed neutrinos are introduced to realize the seesaw mechanism for tiny neutrino masses observed in oscillation experiments. The vacuum expectation value of the singlet Higgs gives the Majorana masses for right-handed neutrinos and the $μ$-term for Higgs fields. The model can explain the observed masses and mixing angles of neutrinos successfully. We find that one of the mixing angles should be in the range $\sin^2 θ_{23} \ge 0.58$. Importantly, the CP violating phases of neutrinos are predicted in the two restricted regions. One is that the Dirac phase is $δ_{\rm CP} \simeq - 0.5 π$ and the Majorana phases are $α_{21} \simeq 0$ and $α_{31} \simeq π$. The other is $δ_{\rm CP} \simeq + 0.5 π$, $α_{21} \simeq 2 π$ and $α_{31} \simeq π$. The effective neutrino mass in the neutrinoless double beta decay is found to be $m_{\rm eff} = 0.037$--0.047 eV. These predictions will be tested in the future neutrino experiments.
description: 11 pages, 5 figures, matches the published version
Vortex distribution in the Lowest Landau Level
Creators: name: Aftalion, Amandine
name: Blanc, Xavier
name: Nier, Francis
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the vortex distribution of the wave functions minimizing the Gross Pitaevskii energy for a fast rotating condensate in the Lowest Landau Level (LLL): we prove that the minimizer cannot have a finite number of zeroes thus the lattice is infinite, but not uniform. This uses the explicit expression of the projector onto the LLL. We also show that any slow varying envelope function can be approximated in the LLL by distorting the lattice. This is used in particular to approximate the inverted parabola and understand the role of ``invisible'' vortices: the distortion of the lattice is very small in the Thomas Fermi region but quite large outside, where the "invisible" vortices lie.
description: 4 pages, 1 figure
Non-Degenerate Ground State in the Antiferromagnetic Double-Exchange Model on a Triangular Lattice
Creators: name: Shimomura, Yoshihiro
name: Miyahara, Shin
name: Furukawa, Nobuo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In order to study effects of frustration in an itinerant electron system, we investigate ground states of the antiferromagnetic double-exchange model on a triangular lattice. In this model, pseudo-spins are coupled to electron transfer integrals in such a way that antiparallel configurations of pseudo-spins gain kinetic energies. Although the antiferromagnetic Ising model on a triangular lattice shows macroscopic dengenerate ground states, the present model shows that the degeneracy is lifted due to long-range natures of the double exchange interactions. Spin ordering at the ground state is also discussed.
description: 8 pages, 5 figures, Proceedings for SPQS2004
Mathematical modeling of the GnRH pulse and surge generator
Creators: name: Clement, Frederique
name: Francoise, Jean-Pierre
Publisher: name: arXiv
Year: 2005
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: Dynamical Systems (math.DS)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: We propose a mathematical model allowing for the alternating pulse and surge pattern of GnRH (Gonadotropin Releasing Hormone) secretion. The model is based on the coupling between two systems running on different time scales. The faster system corresponds to the average activity of GnRH neurons, while the slower one corresponds to the average activity of regulatory neurons. The analysis of the slow/fast dynamics exhibited within and between both systems allows to explain the different patterns (slow oscillations, fast oscillations and periodical surge) of GnRH secretion. Specifications on the model parameter values are derived from physiological knowledge in terms of amplitude, frequency and plateau length of oscillations. The behavior of the model is finally illustrated by numerical simulations reproducing natural ovarian cycles and either direct or indirect actions of ovarian steroids on GnRH secretion.
description: 16 pages, 9 figures
U.S. FARM POLICY: CAN FAIR BE FIXED?
Creators: name: Runge, C. Ford
name: Runge, C. Ford
Publisher: name: Unknown
Year: 1998
Subjects: Agricultural and Food Policy

description: In the scheme of things, the 1996 Federal Agricultural Improvement and Reform Act (FAIR) contained important breaks with a tradition of crop-by-crop subsidies dating back to the Agricultural Adjustment Act of 1933. It freed many producers of "program commodities" (maize, grain sorghum, wheat, barley, oats, cotton and rice) from a system of crop-specific base acre accounting, merged these accounts into a single "whole farm base," and allowed production of any but a few crops on these lands. Overall, the freedom to produce in direct response to market forces, rather than on the basis of crop-by-crop subsidies, as well as the budget discipline of predetermined payments, were important steps in the direction of decoupled lump-sum compensation. Yet from the point of view of advocates of policy reform, FAIR represents an unfinished agenda. A variety of problems and issues remain. First, the coverage of "freedom to farm" is only partial, with numerous commodities left out of the decoupling program. Second, those critical of the distributive impacts of the commodity programs find little to cheer about in the new contracts, and consider the acronym FAIR ironic. Supply responses induced by price levels in the first two years of FAIR have led to substantially lower prices and marketing receipts in 1998. A call has now gone up to resuscitate some form of safety net, such as a return to deficiency payments or an extension and increase in contract payments under the 1996 Act. It is appropriate to move now to finish the unfinished agenda of the 1996 Act by implementing a long term safety net based on some form of revenue assurance (á la Cochrane and Runge, 1992).
Eisenkopf, Paul: Leibniz und die Einigung der Christenheit
Creators: name: Jaspert, Bernd
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 26 Nr. 4 (1977): Ökumenische Rundschau, Band 26, Heft 4
Primordial Black Hole Merger Rate in Ellipsoidal-Collapse Dark Matter Halo Models
Creators: name: Fakhry, Saeed
name: Firouzjaee, Javad T.
name: Farhoudi, Mehrdad
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We have studied the merger rate of primordial black holes (PBHs) in the ellipsoidal-collapse model of halo to explain the dark matter abundance by the PBH merger estimated from the gravitational waves detections via the Advanced LIGO (aLIGO) detectors. We have indicated that the PBH merger rate within each halo for the ellipsoidal models is more significant than for the spherical models. We have specified that the PBH merger rate per unit time and per unit volume for the ellipsoidal-collapse halo models is about one order of magnitude higher than the corresponding spherical models. Moreover, we have calculated the evolution of the PBH total merger rate as a function of redshift. The results indicate that the evolution for the ellipsoidal halo models is more sensitive than spherical halo models, as expected from the models. Finally, we have presented a constraint on the PBH abundance within the context of ellipsoidal and spherical models. By comparing the results with the aLIGO mergers during the third observing run (O3), we have shown that the merger rate in the ellipsoidal-collapse halo models falls within the aLIGO window, while the same result is not valid for the spherical-collapse ones. Furthermore, we have compared the total merger rate of PBHs in terms of their fraction in the ellipsoidal-collapse halo models for several masses of PBHs. The results suggest that the total merger rate of PBHs changes inversely with their masses. We have also estimated the relation between the fraction of PBHs and their masses in the ellipsoidal-collapse halo model and have shown it for a narrow mass distribution of PBHs. The outcome shows that the constraint inferred from the PBH merger rate for the ellipsoidal-collapse halo models can be potentially stronger than the corresponding result obtained for the spherical-collapse ones.
description: 13 pages, 6 figures, refs. added
Dip-coating flow in the presence of two immiscible liquids
Creators: name: Champougny, Lorène
name: Scheid, Benoit
name: Korobkin, Alexander A.
name: Rodríguez-Rodríguez, Javier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Dip-coating is a common technique used to cover a solid surface with a thin liquid film, the thickness of which was successfully predicted by the theory developed by Landau & Levich and Derjaguin in the 1940's. In this work, we present an extension of their theory to the case where the dipping bath contains two immiscible liquids, one lighter than the other, resulting in the entrainment of two thin films on the substrate. We report how the thicknesses of the coated films depend on the capillary number, on the ratios of the properties of the two liquids and on the relative thickness of the upper fluid layer in the bath. We also show that the liquid/liquid and liquid/gas interfaces evolve independently from each other as if only one liquid was coated, except for a very small region where their separation falls quickly to its asymptotic value and the shear stresses at the two interfaces peak. Interestingly, we find that the final coated thicknesses are determined by the values of these maximum shear stresses.
Large negative magnetoresistance in BaMn$_2$Bi$_2$ antiferromagnet
Creators: name: Ogasawara, Takuma
name: Huynh, Kim-Khuong
name: Tahara, Time
name: Kida, Takanori
name: Hagiwara, Masayuki
name: Arčon, Denis
name: Kimata, Motoi
name: Matsushita, Stephane Yu
name: Nagata, Kazumasa
name: Tanigaki, Katsumi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A very large negative magnetoresistance (LNMR) is observed in the insulating regime of the antiferromagnet BaMn$_2$Bi$_2$ when a magnetic field is applied perpendicular to the direction of the sublattice magnetization. High perpendicular magnetic field eventually suppresses the insulating behavior and allows BaMn$_2$Bi$_2$ to re-enter a metallic state. This effect is seemingly unrelated to any field induced magnetic phase transition, as measurements of magnetic susceptibility and specific heat did not find any anomaly as a function of magnetic fields at temperatures above $2\,\mathrm{K}$. The LNMR appears in both current-in-plane and current-out-of-plane settings, and Hall effects suggest that its origin lies in an extreme sensitivity of conduction processes of holelike carriers to the infinitesimal field-induced canting of the sublattice magnetization. The LNMR-induced metallic state may thus be associated with the breaking of the antiferromagnetic parity-time symmetry by perpendicular magnetic fields and/or the intricate multi-orbital electronic structure of BaMn$_2$Bi$_2$.
Demand Constraints and New Demands: Regulations, Markets and Institutions Efficiency (A Case Study for Cape Verde)
Creators: name: De Carvalho, Bernardo Reynolds Pacheco
Publisher: name: CentMA
Year: 2014
Subjects: Demand constraints; food policy; regulation; institutional innovation and economic efficiency

description: Economic efficiency is a key issue in economic research and for policy design, and certainly for food security challenges. In the food system dynamics the understanding of changes and trends is crucial to improve our capacity to deal with the objectives of sustainable development and quality of life. Food system efficiency evaluation is necessary with regard to production and consumption efficiencies as well as market and governance dilemmas. Regulations and institutional efficiency are crucial aspects that are frequently forgotten, and efforts should be made to improve the capacity to deal with those methodological needs. In many situations, in the real world, data and measurements are difficult or even impossible to get in numeric or quantitative terms. Frequently, a qualitative evaluation is the only way to proceed, but measurements and numeric references are still important, mainly when changes over time are central to the research. The actual paper follows a structural food system model (WFSE – World Food Security Equation) and a general equilibrium approach (ICI model – induced changes and innovation model) to show in a country case study (Cape Verde) the important role of markets and institutions as compared to regulation practices directed to improve economic efficiency subject to demand behavior.
 Cape Verde is a very challenging country with regard to the food security status (where natural resources are very poor for agricultural production) but with great success in global and macro terms in the last 10 years. The main problems nowadays are clearly at local level. The present research tries to highlight the global achievements and explore local assessment efforts on food consumption conditions. A specific region is studied, in the island of Santo Antão, one of the most important production regions. Three different production systems were compared mainly with regard to their respective influence on consumption habits, incomes and global interaction and behavior. The results show that food consumption at local level is reasonable good in terms of food security, but that food habits have a determining and surprising influence. Solutions for “food security” improvements are complex and very dependent on social systems, somehow in line with the problems in industrialized economies.
description: International Journal on Food System Dynamics, Vol 5, No 2 (2014)
Spin Dilution in Frustrated Two-Dimensional s=1/2 Antiferromagnets on a Square Lattice
Creators: name: Papinutto, N.
name: Carretta, P.
name: Gonthier, S.
name: Millet, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: $^7$Li and $^{29}$Si NMR, $μ$SR and magnetization measurements in Li$_2$V$_{1-x}$OTi$_x$SiO$_4$, for $0 \leq x \leq 0.2$, are presented. The $x=0$ compound is a prototype of frustrated two-dimensional Heisenberg antiferromagnet on a square-lattice with competing nearest ($J_1$) and next-nearest ($J_2$) neighbour exchange interactions. Ti$^{4+}$ (S=0) for V$^{4+}$ (S=1/2) substitution yields the spin dilution of the antiferromagnetic layers. The analysis of the magnetization and of the nuclear spin-lattice relaxation rate shows that spin dilution not only reduces the spin-stiffness by a factor $\simeq (1-x)^2$, but also causes the decrease of the effective ratio $J_2(x)/J_1(x)$. Moreover, the sublattice magnetization curves derived from zero-field $μ$SR measurements in the collinear phase point out that, at variance with non-frustrated two-dimensional Heisenberg antiferromagnets, spin dilution affects the low-temperature staggered magnetization only to a minor extent. This observation is supported also by the $x$ dependence of the collinear ordering temperature. The results obtained for the Ti doped samples are discussed in the light of the results previously obtained in the pure $x=0$ compound and in non-frustrated two-dimensional Heisenberg antiferromagnets with spin-dilution.
description: 8 pages, 9 figures
Factors Influencing the Performance of German Food SME Formal Networks
Creators: name: Deiters, Jivka
name: Heuss, Esther
Publisher: name: CentMA
Year: 2014
Subjects: SMEs; performance; networks; food

description: The food sector in Europe can be characterized as a complex, global and dynamically changing network of trade streams, food supply network relations and related product flows which offers a big spectrum for economic output and employment. Innovation is important for the competitiveness of the food industry that is to a large extent comprised of small and medium sized enterprises (SMEs). For them, innovation has grown extremely subordinate to interaction in networks. Network initiatives that could provide appropriate support involve social interaction and knowledge exchange, learning and competence development, and coordination (organization) and management of
implementation. This paper is designed to assess the factors that affect the performance of German food SME formal networks. It also addresses the consequences at the network and macro level. The analysis was explored by using the laddering technique based on the means‐end chain theory. The findings will help to build up a “network learning toolbox” that is adapted to the particular requirements of the different target groups such as of SMEs, network managers and policy makers. The “network learning toolbox” should improve network learning, which is a
driver for improvements in innovation, economic growth and sustainable competitive advantage for food SMEs.
description: International Journal on Food System Dynamics, Vol 5, No 2 (2014)
Conference Key Agreement and Quantum Sharing of Classical Secrets with Noisy GHZ States
Creators: name: Chen, Kai
name: Lo, Hoi-Kwong
Publisher: name: arXiv
Year: 2005
Subjects: subject: Information Theory (cs.IT)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: We propose a wide class of distillation schemes for multi-partite entangled states that are CSS-states. Our proposal provides not only superior efficiency, but also new insights on the connection between CSS-states and bipartite graph states. We then consider the applications of our distillation schemes for two cryptographic tasks--namely, (a) conference key agreement and (b) quantum sharing of classical secrets. In particular, we construct ``prepare-and-measure'' protocols. Also we study the yield of those protocols and the threshold value of the fidelity above which the protocols can function securely. Surprisingly, our protocols will function securely even when the initial state does not violate the standard Bell-inequalities for GHZ states. Experimental realization involving only bi-partite entanglement is also suggested.
description: 5 pages, to appear in Proc. 2005 IEEE International Symposium on Information Theory (ISIT 2005, Adelaide, Australia)
Consumer Attitudes, Knowledge, and Behavior in the Russian Market for Organic Food
Creators: name: Meixner, Oliver
name: Haas, Rainer
name: Perevoshchikova, Yana
name: Canavari, Maurizio
Publisher: name: CentMA
Year: 2014
Subjects: Russian Federation, organic food, organic labels, food choice, consumer perception, conjoint analysis

description: In the past few decades, the market for organic food has developed well in Western European countries and comparable markets like the United States or Canada. While these markets are now approaching market saturation, other markets still have huge potential for growth and are therefore of special interest to export companies. In this paper, we analyze the demands, knowledge, and expectations of the emerging market in Russia. It is well documented that the Russian market for organic food has had a much higher growth rate than Western markets in recent years. According to the USDA, the Russian market grew significantly during the last years. The increase might also be due to changes in Russian consumers’ behavior. However, some challenges must be considered when entering the Russian market with premium products: (1) a large number of low‐income consumers are not able to
pay for premium products, and (2) up until now, there have been no official organic labels available in Russia, and, therefore, it is likely that the Russian population lacks knowledge of what organic food is and which requirements are connected to the organic production process. Considering these restrictions, we analyzed important factors affecting Russian consumers’ food choice on the one hand and their knowledge of organic food on the other. This paper presents results for one specific product (organic potatoes), which can be considered to be a typical alternative to low‐priced, conventional products. A conjoint analysis was conducted in Saint Petersburg (n = 300) to investigate the importance of the buying attributes of organic potatoes. While the results are not representative of the whole Russian market, they show crucial differences in consumer attitudes compared to Western markets and confirm that the average consumer knowledge about this product category remains low. These findings offer valuable information to those stakeholders of the supply chain who want to enter a market with high growth rates but obvious shortcomings.
description: International Journal on Food System Dynamics, Vol 5, No 2 (2014)
Stated Preferences for Consumption of Sea Urchin: A Choice Experiment in Sardinia (Italy)
Creators: name: Furesi, Roberto
name: Madau, Fabio A.
name: Palomba, Andrea
name: Pulina, Pietro
Publisher: name: CentMA
Year: 2014
Subjects: Choice experiment; sea urchin demand; stated preferences

description: In Sardinia sea urchin (Paracentrotus lividus) roe is a basic ingredient for several dishes (e.g. pasta, pizza, croutons) and its demand is constantly increasing. However marketable value of local sea urchin appears to be potentially higher than the current value. This paper aims to estimate the value of a based sea urchin dish according to the stated preference of consumers. A Choice Experiment (CE) analysis on 475 consumers was carried out in order to estimate their willingness to pay (WTP) for consuming sea urchin. Seafood was proposed as alternative to sea urchin. CE concerned two attributes:
certification of local origin and place where dishes are consumed. Findings suggest that WTP for a generic dish is significantly higher for sea urchin (11.65 Euros) than for seafood (7.94 Euros) based dish. Furthermore, we found that WTP is higher when both foods are consumed with spaghetti and as raw fresh product, whereas an opposite effect is associated to pizza. Finally, the influence of some socio‐economic characteristics of responders on their preferences was estimated.
description: International Journal on Food System Dynamics, Vol 5, No 3 (2014)
Quantum stochastic processes and quantum non-Markovian phenomena
Creators: name: Milz, Simon
name: Modi, Kavan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The field of classical stochastic processes forms a major branch of mathematics. They are, of course, also very well studied in biology, chemistry, ecology, geology, finance, physics, and many more fields of natural and social sciences. When it comes to quantum stochastic processes, however, the topic is plagued with pathological issues that have led to fierce debates amongst researchers. Recent developments have begun to untangle these issues and paved the way for generalizing the theory of classical stochastic processes to the quantum domain without ambiguities. This tutorial details the structure of quantum stochastic processes, in terms of the modern language of quantum combs, and is aimed at students in quantum physics and quantum information theory. We begin with the basics of classical stochastic processes and generalize the same ideas to the quantum domain. Along the way, we discuss the subtle structure of quantum physics that has led to troubles in forming an overarching theory for quantum stochastic processes. We close the tutorial by laying out many exciting problems that lie ahead in this branch of science.
description: 69 pages, 33 figures. Comments welcome!
Problemi cronologici e una crux di Alceo (F 208 V. = 46a D.)
Creators: name: Negri, Mario
Publisher: name: Aristonothos. Scritti per il Mediterraneo antico
Year: 2016

description: Forthcoming
description: Aristonothos. Scritti per il Mediterraneo antico, No 10 (2015): Un'àncora sul Pianoro della Civita di Tarquinia
Raman and x-ray diffraction investigations on BaMoO4 under high pressures
Creators: name: Panchal, Vinod
name: Garg, Nandini
name: Sharma, Surinder M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: X-ray diffraction and Raman scattering studies on scheelite structured barium molybdate show that, at 5.8 GPa, it undergoes a first order phase transition to fergusonite structure (I2/a, Z=4), asobserved in iso-structural barium tungstate.At still higher pressures, barium molybdate transform to another phase between 7.2-9.5 GPa. On release of pressure from 15.8 GPa, the initial phase is recovered implying that the observed structural modifications are reversible.
description: 23 pages,9 figures and two tables
Gravity Gradient Noise from Asteroids
Creators: name: Fedderke, Michael A.
name: Graham, Peter W.
name: Rajendran, Surjeet
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The gravitational coupling of nearby massive bodies to test masses in a gravitational wave (GW) detector cannot be shielded, and gives rise to 'gravity gradient noise' (GGN) in the detector. In this paper we show that for any GW detector using local test masses in the Inner Solar System, the GGN from the motion of the field of $\sim 10^5$ Inner Solar System asteroids presents an irreducible noise floor for the detection of GW that rises exponentially at low frequencies. This severely limits prospects for GW detection using local test masses for frequencies $f_{\text{GW}} \lesssim (\text{few})\times 10^{-7}\,$Hz. At higher frequencies, we find that the asteroid GGN falls rapidly enough that detection may be possible; however, the incompleteness of existing asteroid catalogs with regard to small bodies makes this an open question around $f_{\text{GW}}\sim μ$Hz, and further study is warranted. We show that a detector network placed in the Outer Solar System would not be overwhelmed by this noise above $\sim 10\,$nHz, and make comments on alternative approaches that could overcome the limitations of local test masses for GW detection in the $\sim 10\,$nHz-$μ$Hz band.
description: 26 pages, 7 figures. Published version
Degenhardt, Johannes Joachim (hrsg.): Kirchen auf gemeinsamem Wege
Creators: name: Boeckler, Richard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 26 Nr. 4 (1977): Ökumenische Rundschau, Band 26, Heft 4
253 + The relationship between the SLC6A4 gene polymorphism (rs 5-HTTLPR) and aggression in combat athletes
Creators: name: BİLEN, Eda
name: ELİÖZ, Murat
Publisher: name: Journal of ROL Sport Sciences
Year: 2023

description: This study aimed to investigate the relationship between the SLC6A4 gene's 5-HTTLPR polymorphism and aggression levels among elite combat athletes. A total of 40 male athletes from taekwondo (n=10), kickboxing (n=10), boxing (n=10) and wrestling (n=10), aged between 20-35 years, participated in the study. The quantitative data was collected by using a personal information form and the Aggression Scale Inventory. Whole blood samples were taken for DNA isolation and genotyping analysis was performed. In 5-HTTLPR polymorphism, 38.8% (31) had the L allele and 61.3% (49) had the S allele. The highest S allele distribution in 5-HTTLPR polymorphism was found in taekwondo branch (32.7%). In 5-HTTLPR polymorphism, 77.5% (31) and 9% (22.5%) of the athletes had L/S and S/S genotyping, respectively. According to the aggression scale inventory, it was found that the wrestling branch had the highest general aggression mean (114.60), however; there was no significant difference between the sub-dimensions of aggression (Destructive, Attemptive and Passive) in branch comparisons (p>0.05). Based on the applied aggression scale inventory and genetic analysis of SLC6A4 gene 5-HTTLPR polymorphism, it can be considered that the combat athletes participating in the study are tend to aggression.