cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Managing by the numbers? : examining barriers to harvest assessment in a Southeast Alaska subsistence salmon fishery
Creators: name: Smith, Morgen Elizabeth
Publisher: name: University of British Columbia
Year: 2009

description: This thesis identifies and discusses a variety of historical, economic, and regulatory barriers to the collection of harvest data for a subsistence salmon fishery on Southeast Alaska's Chilkat River. The research on which this paper is based also elicited suggestions for improving participation in and accuracy of future harvest assessment efforts. Research was conducted using standard social science interview methodology, participant observation, and reviews of historical and regulatory documents. Barriers identified include a general dissonance between harvesters and management bodies in relation to the valuation and documentation of fisheries resources, as well as specific regulations regarding gear types, seasonality, area, species, and allocation of harvest that contradict customary and traditional harvest practices. These factors contribute to low levels of communication and trust between user groups and management bodies, resulting in non-participation in harvest assessment efforts among user groups. Conventional management approaches, legal mandate, and a shifting political climate are presented as factors contributing to the motivation for this type of research intended to better document characteristics of subsistence harvest. Ultimately, this thesis argues that harvest assessment would be improved through a more inclusive cooperative management effort. ii
Additional file 2 of Ex vivo modelling of drug efficacy in a rare metastatic urachal carcinoma
Creators: name: Mäkelä, Rami
name: Arjonen, Antti
name: Härmä, Ville
name: Rintanen, Nina
name: Paasonen, Lauri
name: Paprotka, Tobias
name: Rönsch, Kerstin
name: Kuopio, Teijo
name: Kononen, Juha
name: Rantala, Juha K.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Hematology

description: Additional file 2: Figure S2. Comparison of the drug primary urachal cancer cell culture to patient derived bladder cancer cell cultures. A) Heatmap visualization of the dose response of the urachal cancer cells MISB18 with four cell cultures established from patients samples of different bladder cancer types. GR values of
Prior knowledge distillation based on financial time series
Creators: name: Fang, Jie
name: Lin, Jianwu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Trading and Market Microstructure (q-fin.TR)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: One of the major characteristics of financial time series is that they contain a large amount of non-stationary noise, which is challenging for deep neural networks. People normally use various features to address this problem. However, the performance of these features depends on the choice of hyper-parameters. In this paper, we propose to use neural networks to represent these indicators and train a large network constructed of smaller networks as feature layers to fine-tune the prior knowledge represented by the indicators. During back propagation, prior knowledge is transferred from human logic to machine logic via gradient descent. Prior knowledge is the deep belief of neural network and teaches the network to not be affected by non-stationary noise. Moreover, co-distillation is applied to distill the structure into a much smaller size to reduce redundant features and the risk of overfitting. In addition, the decisions of the smaller networks in terms of gradient descent are more robust and cautious than those of large networks. In numerical experiments, we find that our algorithm is faster and more accurate than traditional methods on real financial datasets. We also conduct experiments to verify and comprehend the method.
description: Published on IEEE-INDIN-2020, 6 pages
A Method Based on a Nonlinear Generalized Heisenberg Algebra to Study the Molecular Vibrational Spectrum
Creators: name: de Souza, J.
name: Oliveira-Neto, N. M.
name: Ribeiro-Silva, C. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We propose a method, based on a Generalized Heisenberg Algebra (GHA), to reproduce the anharmonic spectrum of diatomic molecules. The theoretical spectrum generated by GHA allows us to fit the experimental data and to obtain the dissociation energy for the carbon monoxide molecule. Our outcomes are more accurate than the standard models used to study molecular vibrations, namely the Morse and the $q$-oscillator models and comparable to the perturbed Morse model proposed by Huffaker \cite{hf}, for the first experimental levels. The dissociation energy obtained here is more accurate than all previous models.
Pulse retrieval and soliton formation in a non-standard scheme for dynamic electromagnetically induced transparency
Creators: name: Peng, Amy
name: Johnsson, Mattias
name: Hope, Joseph J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine in detail an alternative method of retrieving the information written into an atomic ensemble of three-level atoms using electromagnetically induced transparency. We find that the behavior of the retrieved pulse is strongly influenced by the relative collective atom-light coupling strengths of the two relevant transitions. When the collective atom-light coupling strength for the retrieval beam is the stronger of the two transitions, regeneration of the stored pulse is possible. Otherwise, we show the retrieval process can lead to creation of soliton-like pulses.
description: 11 figures
Additional file 1 of Low uptake of continuous subcutaneous insulin infusion therapy in people with type 1 diabetes in Ireland: a retrospective cross-sectional study
Creators: name: Gajewska, Katarzyna Anna
name: Bennett, Kathleen
name: Biesma, Regien
name: Sreenan, Seamus
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: 60506 Virology
subject: FOS: Biological sciences
subject: Computational Biology

description: Additional file 1: Table S1. The list of 18 geographical areas based on the matching between 32 HSE-PCRS Local Health Offices (LHOs) and 31 CSO County and City areas.
Quantum limits of super-resolution in reconstruction of optical objects
Creators: name: Beskrovnyy, Vladislav N.
name: Kolobov, Mikhail I.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate analytically and numerically the role of quantum fluctuations in reconstruction of optical objects from diffraction-limited images. Taking as example of an input object two closely spaced Gaussian peaks we demonstrate that one can improve the resolution in the reconstructed object over the classical Rayleigh limit. We show that the ultimate quantum limit of resolution in such reconstruction procedure is determined not by diffraction but by the signal-to-noise ratio in the input object. We formulate a quantitative measure of super-resolution in terms of the optical point-spread function of the system.
description: 23 pages, 7 figures. Submitted to Physical Review A e-mail: Mikhail.kolobov@univ-lille1.fr
Helium effects and bubbles formation in irradiated Ti3SiC2
Creators: name: Zhang, Hongliang
name: Su, Ranran
name: Szlufarska, Izabela
name: Shi, Liqun
name: Wen, Haiming
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ti3SiC2 is a potential structural material for nuclear reactor applications. However, He irradiation effects in this material are not well understood, especially at high temperatures. Here, we compare the effects of He irradiation in Ti3SiC2 at room temperature (RT) and at 750 °C. Irradiation at 750 °C was found to lead to extremely elongated He bubbles that are concentrated in the nano-laminate layers of Ti3SiC2, whereas the overall crystal structure of the material remained intact. In contrast, at RT, the layered structure was significantly damaged and highly disordered after irradiation. Our study reveals that at elevated temperatures, the unique structure of Ti3SiC2 can accommodate large amounts of He atoms in the nano-laminate layer, without compromising the structural stability of the material. The structure and the mechanical tests results show that the irradiation induced swelling and hardening at 750 °C are much smaller than those at RT. These results indicate that Ti3SiC2 has an excellent resistance to accumulation of radiation-induced He impurities and that it has a considerable tolerance to irradiation-induced degradation of mechanical properties at high temperatures.
Propagation of Light in an Ensemble of "3+1"-Level Atoms
Creators: name: Li, Yong
name: Sun, C. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the propagation of a quantum probe light in an ensemble of "3+1"-level atoms when the atoms are coupled to two other classical control fields. First we calculate the dispersion properties, such as susceptibility and group velocity, of the probe light within such an atomic medium under the case of three-photon resonance via the dynamical algebra method of collective atomic excitations. Then we calculate the dispersion of the probe light not only under the case that two classical control fields have the same detunings to the relative atomic transitions but also under the case that they have the different detunings. Our results show in both cases the phenomenon of electromagnetically induced transparency can accur. Especially use the second case, we can find two transparency windows for the probe light.
description: 5 pages, 5 figures
The role of Galactic HII regions in the formation of filaments. High-resolution submilimeter imaging of RCW 120 with ArTéMiS
Creators: name: Zavagno, A.
name: André, Ph.
name: Schuller, F.
name: Peretto, N.
name: Shimajiri, Y.
name: Arzoumanian, D.
name: Csengeri, T.
name: Figueira, M.
name: Fuller, G. A.
name: Könyves, V.
name: Men'shchikov, A.
name: Palmeirim, P.
name: Roussel, H.
name: Russeil, D.
name: Schneider, N.
name: Zhang, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Massive stars and their associated ionized (HII) regions could play a key role in the formation and evolution of filaments that host star formation. However, the properties of filaments that interact with H regions are still poorly known. To investigate the impact of HII regions on the formation of filaments, we imaged the Galactic HII region RCW 120 and its surroundings where active star formation takes place and where the role of ionization feedback on the star formation process has already been studied. We used the ArTéMiS camera on the APEX telescope and combined the ArTéMiS data at 350 and 450 microns with Herschel-SPIRE/HOBYS. We studied the dense gas distribution around RCW 120 with a resolution of 8 arcsec (0.05 pc at a distance of 1.34 kpc). Our study allows us to trace the median radial intensity profile of the dense shell of RCW 120. This profile is asymmetric, indicating a clear compression from the HII region on the inner part of the shell. The profile is observed to be similarly asymmetric on both lateral sides of the shell, indicating a homogeneous compression over the surface. On the contrary, the profile analysis of a radial filament associated with the shell, but located outside of it, reveals a symmetric profile, suggesting that the compression from the ionized region is limited to the dense shell. The mean intensity profile of the internal part of the shell is well fitted by a Plummer like profile with a deconvolved Gaussian FWHM of 0.09 pc, as observed for filaments in low-mass star-forming regions. This study suggests that compression exerted by HII regions may play a key role in the formation of filaments and may further act on their hosted star formation. ArTéMiS data also suggest that RCW 120 might be a 3D ring, rather than a spherical structure
description: 8 pages, 8 figures, accepted by A&A
Using OOEM to analyze inter-organization process
Creators: name: Shuai, Zhengbin
Publisher: name: University of British Columbia
Year: 2009

description: Inter-organization (IO) process streamlining and integration are becoming more and more important in business operations, especially in B2B and supply chain management. Not only will analyzing and modeling IO processes help people on both the business side and the technology side clearly understand the related issues, but it will also allow information system design and implementation to meet business requirements. Compared with the modeling of intra-organization process, modeling IO process necessitates dealing with some special issues such as the interface difference and the rule difference of different organizations. This thesis aims to test the applicability of the object-oriented enterprise model (OOEM), an ontologically based enterprise analysis method, and the OOEM workflow model (OOWM) to a multi-organizational system to help analyze IO processes and stress the related issues. Rules and procedures for the formation of MO-OOEM, an OOEM and OOWM specialization that is used to support cross organization process analysis, are proposed. We use the MO-OOEM object model to describe the structure of the multi-organization system, and the MO-OOEM workflow model to model the inter-organization processes. Sample cases are presented in the thesis to show the details of our method.
Additional file 1 of Clinical, pathological, imaging, and genetic characterization in a Taiwanese cohort with limb-girdle muscular dystrophy
Creators: name: Liang, Wen-Chen
name: Jong, Yuh-Jyh
name: Chien-Hua Wang
name: Wang, Chen-Hua
name: Tian, Xia
name: Wan-Zi Chen
name: Tzu-Min Kan
name: Narihiro Minami
name: Ichizo Nishino
name: Lee-Jun C. Wong
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1.
Electron pairing induced by repulsive interactions in tunable one-dimensional platforms
Creators: name: Shavit, Gal
name: Oreg, Yuval
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a scheme comprised of a one-dimensional system with repulsive interactions, in which the formation of bound pairs can take place in an easily tunable fashion.By capacitively coupling a primary electronic quantum wire of interest to a secondary strongly-correlated fermionic system, the intrinsic electron-electron repulsion may be overcome, promoting the formation of bound electron pairs in the primary wire. The intrinsic repulsive interactions tend to favor the formation of charge density waves of these pairs, yet we find that superconducting correlations are dominant in a limited parameter regime. Our analysis show that the paired phase is stabilized in an intermediate region of phase space, encompassed by two additional phases: a decoupled phase, where the primary wire remains gapless, and a trion phase, where a primary electron pair binds a charge carrier from the secondary system. Tuning the strength of the primary-secondary interaction, as well as the chemical potential of the secondary system, one can control the different phase transitions. Our approach takes into account the interactions among the secondary degrees of freedom, and strongly relies on their highly correlated nature. Extension of our proposal to two dimensions is discussed, and the conditions for a long-range superconducting order from repulsion only are found. Our physical description, given by a simple model with a minimal amount of ingredients, may help to shed some light on pairing mechanism in various low-dimensional strongly correlated materials.
description: Published version
On topological tensor products of functional Frechet and DF spaces
Creators: name: Smirnov, A. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46A32; 46E10; 46A04

description: A convenient technique for calculating completed topological tensor products of functional Frechet and DF spaces is developed. The general construction is applied to proving kernel theorems for a wide class of spaces of smooth and entire analytic functions.
description: 10 pages, published version
The Story Of A Property
Creators: name: RODRIGUES, TENSING CARLOS
Publisher: name: figshare
Year: 2021
Subjects: subject: History
subject: Anthropology
subject: FOS: Sociology
subject: Archaeology
subject: Geography
subject: Sociology

description: It is therefore reasonable to believe that the Jewish traders in Gopakāpaṭṭan contributed for the Kadaṃb temple in Divar; and that for this they had set aside a property there to provide for the oil for the lamp of the Śrī Gaṇēś temple at Navelim, Divar. It could be this property that the Śiddôṇ gāṁvkārī had earmarked to provide for the oil for the lamp of the Our Lady of Divar, in continuation of the obligation that the property carried before it came to be of the gāṁvkārī. As we have seen before, in public belief, an unfulfilled religious obligation or ‘pensão’ could be disastrous, whether for the individual owner or the gāṁvkārī. We have already seen how the properties of the Jewish traders were confiscated by the Inquisition, and passed into the hands of the State or the Archdiocese, but more often in the hands of the Inquisitors, and whomsoever they sold them to.
Implications of dark sector mixing on leptophilic scalar dark matter
Creators: name: Chakraborti, Sreemanti
name: Islam, Rashidul
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a new viable outlook to the mixing between a singlet and a doublet leptonic dark sector fields. This choice relaxes the dark matter (DM) search constraints on the quintessential scalar singlet DM as well as presents new opportunities for its detection in the lab. The mixing produces an arbitrary mass difference between the two components of the extra doublet in a gauge-invariant way, without introducing any new scale of electroweak symmetry breaking in the theory. It also provides a useful handle to distinguish between the dark sector particles of different isospins, which is a challenging task otherwise. As the dark leptons coannihilate non-trivially, the mixing effectively enhances the viable parameter space for the relic density constraint. In low DM mass regime, our analysis shows that with a non-zero mixing, it is possible to relax the existing indirect search bounds on the upper limit of the DM-Standard Model coupling. From the analysis of the $3τ+ E^{miss}_T$ and $\ell\,τ+ E^{miss}_T$ channels for LHC at $\sqrt{s} = 13$ TeV, we show that one ensures the presence of the mixing parameter between the dark sector particles of the theory by looking at the peak and tail positions of the kinematic distributions. Even with a tweak in the values of other free parameters within the viable parameter region, the distinct peak and tail positions of the kinematic distributions remains a constant feature of the model. While both the channels present us the opportunity to detect the mixing signature at the LHC/HL-LHC, the former gives better results in terms of a larger region of mixing parameter. From the fiducial cross section, the projected statistical significance for the integrated luminosity, ${\mathscr L} = 3~\text{ab}^{-1}$, are shown for a combined parameter region obeying all the existing constraints, where there is the best possibility to detect such a signature.
description: 20 pages, 12 captioned figures, matches published version in JHEP
Second Moments of Nucleon Unpolarized, Polarized, and Transversity Parton Distribution Functions from Lattice QCD at the Physical Point
Creators: name: Rodekamp, Marcel
name: Engelhardt, Michael
name: Green, Jeremy Russell
name: Krieg, Stefan
name: Liuti, Simonetta
name: Meinel, Stefan
name: Negele, John W.
name: Pochinsky, Andrew
name: Syritsyn, Sergey
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023
Subjects: parton, distribution function
flavor, 3
operator, twist
fermion, coupling
fermion, clover
pi, mass
lattice field theory
nucleon
tree approximation
transversity
longitudinal
GeV
excited state
quark
lattice
moment
kinematics
correlation

description: The second Mellin moments of the nucleon's unpolarized, polarized, and transversity parton distribution functions (PDFs) are computed. Two lattice QCD ensembles at the physical pion mass are used: these were generated using a tree-level Symanzik-improved gauge action and 2+1 flavour tree-level improved Wilson Clover fermions coupling via 2-level HEX-smearing. The moments are extracted from forward matrix elements of local leading twist operators. We determine renomalization factors in RI-(S)MOM and match to $\bar{\mathrm{MS}}$ at scale $2\,\mathrm{GeV}$. Our findings show that operators that exhibit vanishing kinematics at zero momentum can have significantly reduced excited-state contamination. The resulting polarized moment is used to quantify the longitudinal contribution to the quark spin-orbit correlation. All our results agree within two sigma with previous lattice results.
Use of V_{low-k} in a chiral-perturbation-theory description of the $pp\to ppπ^0$ reaction
Creators: name: Kim, Y.
name: Danchev, I.
name: Kubodera, K.
name: Myhrer, F.
name: Sato, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Previously, the near-threhold $pp\to ppπ^0$ reaction was studied with the use of transition operators derived from chiral perturbation theory ($χ$PT) and the nuclear wave functions generated by high-precision phenomenological potentials. A conceptual problem in that approach was that the transition amplitude receives contributions from very high momentum components (above the cutoff scale of $χ$PT) in the nuclear wave functions. In the present work, we avoid this problem by replacing the "bare" phenomenological potentials with V_{low-k}, which is an effective potential derived from a bare potential by integrating out momentum components higher than a specified cutoff scale. The use of V_{low-k} is found to give an enhancement of the $pp\to ppπ^0$ cross sections over the values obtained with bare potentials. Although this enhancement brings the calculated cross sections closer to the experimental values, the incident-energy dependence of the cross section is not well reproduced, a problem that seems to indicate the necessity of including higher chiral order terms than considered in the present work.
description: 16 pages and 6 figures
Data bridges for scientific & official data integration
Creators: name: Gonzalez-Beltran, Alejandra
Publisher: name: Zenodo
Year: 2020
Subjects: data bridges
data integration

description: This presentation was part of a United Nation Data Forum session entitled "Multi-Stakeholder Data Bridges: making data work for cross-domain grand challenges" organised by CODATA, part of the International Science Council.

See more details about the session, its recording and associated panel at: https://codata.org/multi-stakeholder-data-bridges-recording-of-our-live-discussion-relating-to-our-un-data-forum-session/
High energy gamma rays from the massive black hole in the Galactic Center
Creators: name: Aharonian, Felix
name: Neronov, Andrii
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Accreting black holes are believed to be sites of possible particle acceleration with favorable conditions also for effective gamma-ray production. However, because of photon-photon pair production, only low energy (MeV) gamma-rays can escape these compact objects with typically very large compactness parameter, given that in most cases the accretion disks within 10 Schwarzschild radii radiate with a power exceeding 10 percent of the Eddington luminosity. Therefore, the high-energy gamma-ray emission of these objects (both stellar mass and supermassive BHs) is generally suppressed, and consequently the unique information on possible particle acceleration process near the event horizon of the BH is essentially lost. Fortunately, this is not the case for the super-massive BH located at the dynamical center of our Galaxy (Sgr A*) which, thanks to its extraordinary low bolometric luminosity is transparent fo gamma-rays up to very high energies, about 10 TeV. We discuss different scenarios of gamma-ray production in Sgr A* and show that for a reasonable set of parameters one can expect detectable gamma-ray fluxes of both hadronic and electronic origin. Some of these scenarios are applicable not only for the TeV gamma-ray emission recently reported from the direction of Galactic Center, but may have broader implications relevant to highly variable nonthermal emission of Sgr A* in radio, IR and X-ray bands.
description: submitted to Astrophysical Journal
Bridging the Ultraviolet and Optical Regions: Transformation Equations between {\it GALEX} and {\it UBV} Photometric Systems
Creators: name: Bilir, S.
name: Alan, N.
name: Guctekin, S. Tuncel
name: Celebi, M.
name: Yontan, T.
name: Plevne, O.
name: Ak, S.
name: Ak, T.
name: Karaali, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We derive transformation equations between GALEX and UBV colours by using the reliable data of 556 stars. We present two sets of equations; as a function of (only) luminosity class, and as a function of both luminosity class and metallicity. The metallicities are provided from the literature, while the luminosity classes are determined by using the PARSEC mass tracks in this study. Small colour residuals and high squared correlation coefficients promise accurate derived colours. The application of the transformation equations to 70 stars with reliable data shows that the metallicity plays an important role in estimation of more accurate colours.
description: 16 pages, including 14 figures and 6 tables, accepted for publication in PASA
Zener quantum dot spin filter in a carbon nanotube
Creators: name: Gunlycke, D.
name: Jefferson, J. H.
name: Bailey, S. W. D.
name: Lambert, C. J.
name: Pettifor, D. G.
name: Briggs, G. A. D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We predict and analyze a novel spin filter in semiconducting carbon nanotubes. By using local electrostatic gates, the conduction and valence bands can be modulated to form a double-barrier structure. The confined region below the valence band defines a Zener quantum dot, which exhibits resonant tunneling. The resonances split in a magnetic field to make a bipolar spin filter for applications in spintronics and quantum information processing. We model this using k*p envelope function theory and show that this is in excellent agreement with a corresponding tight-binding calculation.
description: 8 pages latex, 5 eps figs. Accepted to J. Phys. Cond. Mat
A Randomized Algorithm to Reduce the Support of Discrete Measures
Creators: name: Cosentino, Francesco
name: Oberhauser, Harald
name: Abate, Alessandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Probability (math.PR)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Given a discrete probability measure supported on $N$ atoms and a set of $n$ real-valued functions, there exists a probability measure that is supported on a subset of $n+1$ of the original $N$ atoms and has the same mean when integrated against each of the $n$ functions. If $ N \gg n$ this results in a huge reduction of complexity. We give a simple geometric characterization of barycenters via negative cones and derive a randomized algorithm that computes this new measure by "greedy geometric sampling". We then study its properties, and benchmark it on synthetic and real-world data to show that it can be very beneficial in the $N\gg n$ regime. A Python implementation is available at \url{https://github.com/FraCose/Recombination_Random_Algos}.
Electronic Structure of Strongly Correlated Systems Emerging from Combining Path-Integral Renormalization Group with Density Functional Approach
Creators: name: Imai, Yoshiki
name: Solovyev, Igor V.
name: Imada, Masatoshi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A new scheme of first-principles computation for strongly correlated electron systems is proposed. This scheme starts from the local-density approximation (LDA) at high-energy band structure, while the low-energy effective Hamiltonian is constructed by a downfolding procedure using combinations of the constrained LDA and the GW method. Thus obtained low-energy Hamiltonian is solved by the path-integral renormalization-group method, where spatial and dynamical fluctuations are fully considered. An application to Sr$_2$VO$_4$ shows that the scheme is powerful in agreement with experimental results. It further predicts a nontrivial orbital-stripe order.
description: 5 pages including 4 figures
title: Consumers' favourable emotional feelings towards foreign countries - investigating the effects of consumer affinity on brand perceptions
Creators: name: Al Khateeb, Amr
Publisher: name: University of Reading
Year: 2018

description: Objectives: The purpose of this research is to understand the impact of consumer affinity on brand perceptions. In particular, the study aims to investigate the effect of positive emotional feelings that consumers establish and exhibit towards a foreign country on how they perceive brands originating from the same country, measured by consumer-based brand equity and brand loyalty. Finally, the study examines the impact of consumer affinity on country loyalty. Methodology: The study employs a mixed method approach. Eighteen interviews were conducted with UK consumers to understand what contributes to their affinity feelings and to revise the conceptual framework developed by the researcher. Based on a review of literature and the findings of the qualitative interviews, a conceptual model was developed for empirical testing. To validate the theoretical model, survey data were collected from 507 UK respondents who expressed their affinity feelings as well as their perceptions of car and clothing brands. Findings: Results suggest that consumer affinity plays a vital role in determining brand perceptions. Consumer affinity is positively related to the dimensions of consumer-based brand equity and country loyalty. The dimensions of consumer-based brand equity mediate the relationship between consumer affinity and brand loyalty. Contribution: The study adds to our understanding of the construct of consumer affinity by shedding light on what constitutes affinity feelings. In addition, the study provides a novel conceptual framework to understand-the mechanism through which consumer affinity affects brand perceptions. Finally, the study equips governments with tools to create and leverage affinity feelings towards their countries in addition to providing marketing managers with insights on how to make use of such feelings to better design their branding strategies and position their brands in foreign markets.
Analysing gamification elements in educational environments using an existing Gamification taxonomy
Creators: name: Toda, Armando M.
name: Klock, Ana C. T.
name: Oliveira, Wilk
name: Palomino, Paula T.
name: Rodrigues, Luiz
name: Shi, Lei
name: Bittencourt, Ig
name: Gasparini, Isabela
name: Isotani, Seiji
name: Cristea, Alexandra I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Gamification has been widely employed in the educational domain over the past eight years when the term became a trend. However, the literature states that gamification still lacks formal definitions to support the design and analysis of gamified strategies. This paper analysed the game elements employed in gamified learning environments through a previously proposed and evaluated taxonomy while detailing and expanding this taxonomy. In the current paper, we describe our taxonomy in-depth as well as expand it. Our new structured results demonstrate an extension of the proposed taxonomy which results from this process, is divided into five dimensions, related to the learner and the learning environment. Our main contribution is the detailed taxonomy that can be used to design and evaluate gamification design in learning environments.
description: Smart Learn. Environ. 6, 16 (2019)
Multivariate Typology of Farm Households Based on Socio-Economic Characteristics Explaining Adoption of New Technology in Rwanda
Creators: name: Bidogeza, J.C.
name: Berentsen, Paul B.M.
name: De Graaff, J.
name: Oude Lansink, Alfons G.J.M.
name: Bidogeza, J.C.
name: Berentsen, Paul B.M.
name: De Graaff, J.
name: Oude Lansink, Alfons G.J.M.
Publisher: name: Unknown
Year: 2008
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: Land Economics/Use
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Research and Development/Tech Change/Emerging Technologies

description: The challenge for agricultural policymakers and planners, particularly in the context of Rwanda with high population density and consequently food insecurity, is how to enable farmers to adopt new technology. It is known that adoption of new technology may vary among farm households because of socio-economic characteristics. This paper intends to typify farm households in Rwanda based on the exploration of factors explaining adoption of new technology. Ultimately, typical farms obtained from the typology will be used, later as basis to develop representative mathematical programming models. Multivariate statistical techniques offer the means of creating such typologies, particularly when an in-depth database is available. This multivariate analysis approach, combining principal component analysis (PCA) and cluster analysis (CA), has allowed us to identify clearly five typical farm households and their socio-economic characteristics explaining adoption of new technology.. Multivariate statistical techniques, such as PCA and CA, are great tools to envisage building mathematical programming models on the basis of typical farm households.
First-order phase transition of fixed connectivity surfaces
Creators: name: Koibuchi, Hiroshi
name: Kusano, Nobuyuki
name: Nidaira, Atsusi
name: Suzuki, Komei
name: Yamada, Mitsuru
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We report a numerical evidence of the discontinuous transition of a tethered membrane model which is defined within a framework of the membrane elasticity of Helfrich. Two kinds of phantom tethered membrane models are studied via the canonical Monte Carlo simulation on triangulated fixed connectivity surfaces of spherical topology. A surface model is defined by the Gaussian term and the bending energy term, and the other, which is tensionless, is defined by the bending energy term and a hard wall potential. The bending energy is defined by using the normal vector at each vertex. Both of the models undergo the first-order phase transition characterized by a gap of the bending energy. The phase structure of the models depends on the choice of discrete bending energy.
description: 6 pages with 7 figures
Axion quality from the (anti)symmetric of SU(N)
Creators: name: Ardu, Marco
name: Di Luzio, Luca
name: Landini, Giacomo
name: Strumia, Alessandro
name: Teresi, Daniele
name: Wang, Jin-Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose two models where a U(1) Peccei-Quinn global symmetry arises accidentally and is respected up to high-dimensional operators, so that the axion solution to the strong CP problem is successful even in the presence of Planck-suppressed operators. One model is SU$(N)$ gauge interactions with fermions in the fundamental and a scalar in the symmetric. The axion arises from spontaneous symmetry breaking to SO$(N)$, that confines at a lower energy scale. Axion quality in the model needs $N \gtrsim 10$. SO bound states and possibly monopoles provide extra Dark Matter candidates beyond the axion. In the second model the scalar is in the anti-symmetric: SU$(N)$ broken to Sp$(N)$ needs even $N \gtrsim 20$. The cosmological DM abundance, consisting of axions and/or super-heavy relics, can be reproduced if the PQ symmetry is broken before inflation (Boltzmann-suppressed production of super-heavy relics) or after (super-heavy relics in thermal equilibrium get partially diluted by dark glue-ball decays).
description: 26 pages, 5 figures. v3: extra application mentioned; dilution factor in eq. (27) corrected, qualitative conclusions unchanged
Investigating the Sources of Agricultural Growth in Africa: Factor Accumulation, Total Factor Productivity, and Technology Absorption
Creators: name: Nkamleu, Guy Blaise
name: Nkamleu, Guy Blaise
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Community/Rural/Urban Development
subject: Demand and Price Analysis
subject: Farm Management
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: International Relations/Trade
subject: Land Economics/Use
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Productivity Analysis
subject: Research and Development/Tech Change/Emerging Technologies
subject: Growth accounting
subject: TFP
subject: Factor accumulation
subject: Capital absorption
subject: Africa

description: This paper investigates sources and determinants of agricultural growth in Africa, concentrating on the growth path during the last three decades. The analysis employs the broader framework provided by empirical growth literature and recent developments in Total Factor Productivity (TFP) measurement to search for fundamental determinants of growth in African agriculture. One main contribution and new findings in this analysis is the quantification of the contribution of the productivity growth and the contribution of different inputs such as land, labor, tractor and fertilizer in the agricultural growth. Growth accounting computation highlights the fact that factor accumulation rather than TFP accounts for a large share of agricultural output growth and fertilizer has been the most statistically important physical input contributor to agricultural growth. The study also highlights the extent to which agricultural growth contributors vary in relation with different country conditions, institutions and politico-historical factors.
Measuring the hypolipidemic, atheroprotective and mechanistic properties of FM-VP4 in LDL-dominant animal models
Creators: name: Blaser, Jill Andréa
Publisher: name: University of British Columbia
Year: 2009

description: It is well established that high plasma cholesterol levels play a key role in the development of atherosclerosis, a form of coronary heart disease (CHD). Data from numerous laboratory experiments, genetic and epidemiological studies as well as extensive clinical trials have shown that reducing plasma cholesterol concentrations leads to a decreased risk for the development of CHD. Among the recommended strategies for achieving and maintaining lower plasma cholesterol levels is the use of pharmacological agents. While there are many different classes of lipid-lowering drugs currently available with varying degrees of safety and efficacy, the HMG-CoA reductase inhibitors (statins) are the most widely prescribed for lowering plasma total and LDL-cholesterol levels. HMG-CoA reductase inhibitors, however, are not effective in all individuals and there are safety concerns over the long-term administration of the high doses of these drugs that are often required to achieve target cholesterol levels. FM-VP4 is a novel phytostanol analogue which has been shown to lower plasma cholesterol levels in a variety of animals models. Additionally, FM-VP4 has also demonstrated the ability to reduce the formation of athersclerotic lesions. The purpose of this study was to measure the cholesterol-lowering and lesion-reduction properties of FMVP4 as well as to try to ascertain its molecular mechanism of action in LDL-dominant animal models. From our studies in the rabbit model we were unable to make any significant conclusions due to the great variability in response to both dietary cholesterol and FM-VP4 treatment in the different groups of animals over the 10-week treatment period. In the apo B-100 mouse model, however, we demonstrated a 61% decrease in plasma total cholesterol levels as well as a 34% decrease in plasma apolipoprotein B levels compared to control animals on the same high fat, high cholesterol diet. We also showed a small, but significant, decrease in fatty lesion area in the aortic arch of the treated mice compared to controls. In examining the expression of genes involved in cellular cholesterol control (ABCA1, ABCG5, ABCG8 and LDL receptor) we demonstrated a significant decrease in the expression of ABCG5 in the liver of treated animals. Additionally, we showed a trend towards lowering of ABCA1 and ABCG8 in the liver and small intestine of FM-VP4-treated animals. The expression of the LDL receptor in the liver of the mice was unchanged subsequent to FM-VP4 treatment while there was a trend towards increased expression of this gene in the small intestine. These results have led us to propose that the effect of FMVP4 on the expression of these genes is secondary to its lipid-lowering capabilities.
Expanding the Agricultural Finance Frontier: A Kenyan Case
Creators: name: Kibaara, Betty
name: Nyoro, James K.
name: Kibaara, Betty
name: Nyoro, James K.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Community/Rural/Urban Development
subject: Demand and Price Analysis
subject: Farm Management
subject: Financial Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Institutional and Behavioral Economics
subject: International Relations/Trade
subject: Labor and Human Capital
subject: Land Economics/Use
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Productivity Analysis
subject: Research and Development/Tech Change/Emerging Technologies

description: Agriculture is the mainstay of the Kenyan Economy. However, agriculture has experienced low productivity over the years. Poor access to agricultural finance has been identified as a contributing factor to low crop productivity. Kenyan agriculture has undergone some fundamental changes which have profoundly affected agricultural financial services. In addition, most financiers shy away from lending to the agricultural sector because of the covariant risks related to rain-fed agriculture. Given this background, we undertake a comparative analysis of emerging models of agricultural finance that have expanded the agricultural finance frontier to the smallholder farmers. Key findings indicate that demand for farming credit takes the highest proportion of the credit needs among the rural households, thus accentuating the importance of agricultural finance. The state run model of agricultural financing has the lowest financial sustainability. On the contrary, the community financing models are the most likely drivers of change in the rural finance landscape.
AMoRE: A search for neutrinoless double-beta decay of 100Mo using low-temperature molybdenum-containing crystal detectors
Creators: name: Lee, Moo Hyun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The AMoRE is an experiment to search for neutrinoless double-beta decay of 100Mo in molybdate crystal scintillators using a cryogenic detection technique. The crystals are equipped with metallic magnetic calorimeter sensors that detect both phonon and photon signals at temperatures of a few tens of mK. Simultaneous measurements of thermal and scintillation signals produced by particle interactions in the crystals by MMC sensors provide high energy resolution and efficient particle discrimination. AMoRE-Pilot, an R&D phase with six 48deplCa100MoO4 crystals and a total mass of ~1.9 kg in the final configuration, operated at the 700 m deep Yangyang underground laboratory (Y2L). After completion of the AMoRE-Pilot run at the end of 2018, AMoRE-I with a ~6 kg crystal array comprised of thirteen 48deplCa100MoO4 and five Li2100MoO4 crystals is currently being assembled and installed at Y2L. We have secured 110 kg of 100Mo-isotope-enriched MoO3 powder for the production of crystals for the AMoRE-II phase, which will have ~200 kg of molybdate crystals and operate at Yemilab, a new underground laboratory located ~1,100 m deep in the Handeok iron mine that is currently being excavated and with a scheduled completion date of December 2020. AMoRE-II is expected to improve the upper limit on the effective Majorana neutrino mass to cover the entire inverted hierarchy neutrino mass region: 20-50 meV, in the case when no such decays are observed. Results from AMoRE-Pilot and progress of the preparations for AMoRE-I and AMoRE-II are presented.
description: 10 pages, 4 figures, INSTR'20 conference (Novosibirsk, Feb. 24-28, 2020)
Stable particlelike solitons with multiply-quantized vortex lines in Bose-Einstein condensates
Creators: name: Ruostekoski, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that a multiply-quantized vortex line core can be energetically stable in a harmonically trapped two-component atomic Bose-Einstein condensate. The structure, in which the condensate component with the vortex line is surrounded by the second component forming a vortex ring, can be identified as a particlelike Skyrmion with a multiply-quantized winding number, and closely resembles cosmic vortons.
description: 4 pages, PRA in press