cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
In-medium properties of kaons in a chiral approach
Creators: name: Cui, Yue-Lei
name: Sun, Bao-Xi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The first order self-energy corrections of the kaon in the symmetric nuclear matter are calculated from kaon-nucleon scattering matrix elements using a chiral Lagrangian within the framework of relativistic mean field approximation. It shows that the effective mass and the potential of K^+ meson are identical with those of K^- meson in the nuclear matter, respectively. The effective mass of the kaon in the nuclear matter decreases with the nuclear density increasing, and is not relevant to the kaon-nucleon Sigma term. The kaon-nucleus potential is positive and increases with the nuclear density. Moreover, the influence of the resonance $Λ(1405)$ on the $K^-$-nucleus potential due to the re-scattering term is discussed. Our results indicate the K^- meson could not be bound in the nuclei even if the contribution of $Λ(1405)$ resonance is considered.
description: 8 pages, 3 figures, The contribution of Lambda(1405) resonance in the rescattering process to the K-nucleus potential is discussed in the revised version
The Mid-infrared Fine-structure Lines of Neon as an Indicator of Star For mation Rate in Galaxies
Creators: name: Ho, Luis C.
name: Keto, Eric
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The fine-structure lines of singly ([Ne II] 12.8 micron) and doubly ([Ne III] 15.6 micron) ionized neon are among the most prominent features in the mid-infrared spectra of star-forming regions, and have the potential to be a powerful new indicator of the star formation rate in galaxies. Using a sample of star-forming galaxies with measurements of the fine-structure lines available from the literature, we show that the sum of the [Ne II] and [Ne III] luminosities obeys a tight, linear correlation with the total infrared luminosity, over 5 orders of magnitude in luminosity. We discuss the formation of the lines and their relation with the Lyman continuum luminosity. A simple calibration between star formation rate and the [Ne II]+[Ne III] luminosity is presented.
description: To appear in ApJ. 8 pages
Resolving Resource Incompatibilities in Intelligent Agents
Creators: name: Morveli-Espinoza, Mariela
name: Possebom, Ayslan
name: Tacla, Cesar Augusto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: An intelligent agent may in general pursue multiple procedural goals simultaneously, which may lead to arise some conflicts (incompatibilities) among them. In this paper, we focus on the incompatibilities that emerge due to resources limitations. Thus, the contribution of this article is twofold. On one hand, we give an algorithm for identifying resource incompatibilities from a set of pursued goals and, on the other hand, we propose two ways for selecting those goals that will continue to be pursued: (i) the first is based on abstract argumentation theory, and (ii) the second based on two algorithms developed by us. We illustrate our proposal using examples throughout the article.
description: 9 pages, 2 figures, accepted in the 6th Brazilian Conference on Intelligent Systems, 2017
Dynamical friction in modified Newtonian dynamics
Creators: name: Nipoti, C.
name: Ciotti, L.
name: Binney, J.
name: Londrillo, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have tested a previous analytical estimate of the dynamical friction timescale in Modified Newtonian Dynamics (MOND) with fully non-linear N-body simulations. The simulations confirm that the dynamical friction timescale is significantly shorter in MOND than in equivalent Newtonian systems, i.e. systems with the same phase-space distribution of baryons and additional dark matter. An apparent conflict between this result and the long timescales determined for bars to slow and mergers to be completed in previous N-body simulations of MOND systems is explained. The confirmation of the short dynamical-friction timescale in MOND underlines the challenge that the Fornax dwarf spheroidal poses to the viability of MOND.
description: Accepted for publication in MNRAS. 6 pages, 3 figures. Corrected typo in eq. (8), added panel to Fig. 1, added references and discussion. Results unchanged
Hedonic Quality and Social Norms: a hybrid model of product differentiation
Creators: name: Mantovani, Andrea
name: Tarola, Ornella
name: Vergari, Cecilia
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: SECS-P/01 Economia politica

description: We analyse how strategic competition between a green firm and a brown competitor develops
when their products are differentiated along two dimensions: hedonic quality and environmental
quality. The former dimension refers to the pure (intrinsic) performance of the good, whereas the
latter dimension has a positional content: buying green goods satisfies the consumers’ desire to
be socially worthy citizens. Product variants thus comply at different levels with "green" social
norms. Consumer preferences depend on a combination of hedonic quality and compliance with
social norms. Assuming that the high hedonic quality variant complies less with these norms than
the low hedonic quality variant, we characterize different equilibrium configurations which appear
as a result of both the intensity of such norms and the willingness to pay for the hedonic quality.
Afterwards, we discuss the policy implications of our analysis.
Welfare Chauvinism Among the General Population of the Euro Area in the Aftermath of the Great Recession
Creators: name: Barutell, Luis Fernandez
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: The continuity of the European Union lies in its ability to maintain a robust system of welfare protection and appropriate levels of social cohesion for increasingly diverse and segmented societies. However, the Great Recession of the late 2000s challenged the European social model's advancement and questioned the grounds of European multiculturalism. This thesis aimed to investigate whether contextual socioeconomic characteristics -particularly rising unemployment, inequality, and poverty/social exclusion- increased public support for the exclusion of immigrants from the rights to social benefits and services (welfare chauvinism). A secondary analysis was conducted - from data from Round 8 of the European Social Survey (2016) - to assess the specifics of the Euro area, where the struggles of the post-recession period were particularly severe. By using multilevel modeling (specifically, a three-level structure of individuals nested within regions nested within countries), this dissertation developed an original approach that reinforced some of the conclusions presented in previous investigations. In particular, this study confirmed that increasing regional-unemployment and growing country-inequality were significantly associated with exclusionist attitudes among the Eurozone's citizenry. Such a finding was consistent with previous literature suggesting that anxiety over scarcity compromises out-group solidarity. However, it was found that an increment of the population at risk of poverty/social exclusion over the recession recovering period related to lower rather than higher welfare chauvinism. Such a paradoxical finding underlines the need for further examination concerning the mechanisms of inter-group solidarity in contexts of persistent and generalized hardship. This dissertation also revealed the protective role of the value of universalism against the exclusion of immigrants from welfare, which can inform evidence-based educational programs towards the promotion of universalism-based ethics. Ultimately, this study contributes to the advancement of social work practice and research across the multicultural and complex European contexts in times of generalized discontent.
Dixon-Souriau equations from a 5-dimensional spinning particle in a Kaluza-Klein framework
Creators: name: Cianfrani, Francesco
name: Milillo, Irene
name: Montani, Giovanni
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The dimensional reduction of Papapetrou equations is performed in a 5-dimensional Kaluza-Klein background and Dixon-Souriau results for the motion of a charged spinning body are obtained. The splitting provides an electric dipole moment, and, for elementary particles, the induced parity and time-reversal violations are explained.
description: 20 pages, to appear on Physics Letters A
Solubility, diffusivity and permeability of gases in glassy polymers
Creators: name: Gemeda, Aweke Elias <1985>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: ING-IND/24 Principi di ingegneria chimica

description: Gas separation membranes of high CO2 permeability and selectivity have great potential in both natural gas sweetening and carbon dioxide capture. Many modified PIM membranes results permselectivity above Robinson upper bound. The big problem that should be solved for these polymers to be commercialized is their aging through time.

In high glassy polymeric membrane such as PIM-1 and its modifications, solubility selectivity has more contribution towards permselectivity than diffusivity selectivity. So in this thesis work pure and mixed gas sorption behavior of carbon dioxide and methane in three PIM-based membranes (PIM-1, TZPIM-1 and AO-PIM-1) and Polynonene membrane is rigorously studied. Sorption experiment is performed at different temperatures and molar fraction.

Sorption isotherms found from the experiment shows that there is a decrease of solubility as the temperature of the experiment increases for both gases in all polymers. There is also a decrease of solubility due to the presence of the other gas in the system in the mixed gas experiments due to competitive sorption effect. Variation of solubility is more visible in methane sorption than carbon dioxide, which will make the mixed gas solubility selectivity higher than that of pure gas solubility selectivity. Modeling of the system using NELF and Dual mode sorption model estimates the experimental results correctly

Sorption of gases in heat treated and untreated membranes show that the sorption isotherms don’t vary due to the application of heat treatment for both carbon dioxide and methane. But there is decrease in the diffusivity coefficient and permeability of pure gases due to heat treatment. Both diffusivity coefficient and permeability decreases with increasing of heat treatment temperature.

Diffusivity coefficient calculated from transient sorption experiment and steady state permeability experiment is also compared in this thesis work. The results reveal that transient diffusivity coefficient is higher than steady state diffusivity selectivity.
Gauge Symmetry Origin of Bäcklund Transformations for Painlevé Equations
Creators: name: Alves, V. C. C.
name: Aratyn, H.
name: Gomes, J. F.
name: Zimerman, A. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We identify the self-similarity limit of the second flow of $sl(N)$ mKdV hierarchy with the periodic dressing chain thus establishing % a connection to $A^{(1)}_{N-1}$ invariant Painlevé equations. The $A^{(1)}_{N-1}$ Bäcklund symmetries of dressing equations and Painlevé equations are obtained in the self-similarity limit of gauge transformations of the mKdV hierarchy realized as zero-curvature equations on the loop algebra $\widehat{sl}(N)$ endowed with a principal gradation.
Effects of substrate network topologies on competition dynamics
Creators: name: Lee, Sang Hoon
name: Jeong, Hawoong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We study a competition dynamics, based on the minority game, endowed with various substrate network structures. We observe the effects of the network topologies by investigating the volatility of the system and the structure of follower networks. The topology of substrate structures significantly influences the system efficiency represented by the volatility and such substrate networks are shown to amplify the herding effect and cause inefficiency in most cases. The follower networks emerging from the leadership structure show a power-law incoming degree distribution. This study shows the emergence of scale-free structures of leadership in the minority game and the effects of the interaction among players on the networked version of the game.
description: 8 pages, 8 figures
Updated Spin and Orbital Parameters and Energy Dependent Pulse Behaviors of the Accreting Millisecond X-ray Pulsar IGR J17591$-$2342
Creators: name: Tse, Kaho
name: Chou, Yi
name: Hsieh, Hung-En
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present our works in updating the spin and orbital parameters for the newly discovered accreting millisecond X-ray pulsar (AMXP) IGR J17591$-$2342 through pulsar timing and analyzing its energy dependent pulse behaviors. The data being analyzed were collected by Neutron Star Interior Composition ExploreR (NICER) that observed this AMXP from August to October 2018. Using the pulse arrival time delay technique, more accurate spin and orbital parameters were evaluated. From the measured spin frequency derivative, it is estimated that the magnetic field of the neutron star in IGR J17591$-$2342 is approximately $4 \times 10^{8}$ G. Precise pulse profiles can be made using the updated spin and orbital parameters. The soft phase lag phenomenon that is usually seen in other AMXPs is also observed from $\sim$4 keV to 12 keV with a value of 0.06 cycles (1.14 $μ$s). Additionally, the pulsed fractional amplitude increases from 1 to $\sim$5 keV and then decreases for higher energy bands. We found that these phenomena, as well as the energy spectrum, can be explained by the two-component model with a relatively strong blackbody component and an additional unpulsed disk blackbody component.
description: 20 pages, 9 figures, 2 tables
Fourier-style Quantum State Tomography and Purity Measurement of a Multi-qubit System from Bloch Rotations
Creators: name: Yanay, Yariv
name: Tahan, Charles
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum state tomography and other measures of the global properties of a quantum state are indispensable tools in understanding many body physics through quantum simulators. Unfortunately, the number of experimental measurements of the system required to estimate these global quantities scales exponentially with system size. Here, we consider the use of random-axis measurements for quantum state tomography and state purity estimation. We perform a general analysis of the statistical deviation in such methods for any given algorithm. We then propose a simple protocol which relies on single-pulse X/Y rotations only. We find that it reduces the basis of the exponential growth, calculating the statistical variance to scale as $\sum_{a,b}\left\lvertΔρ_{ab}\right\rvert^{2}\sim 5^{N}/N_{\rm tot}$ for full tomography, and $\left(Δμ\right)^{2}\sim 7^{N}/N_{\rm tot}^{2}$ for purity estimation, for $N$ qubits and $N_{\rm tot}$ measurements performed.
description: 8 pages, 4 figures
Efficient Dynamic Nuclear Polarization at High Magnetic Fields
Creators: name: Morley, Gavin W.
name: van Tol, Johan
name: Ardavan, Arzhang
name: Porfyrakis, Kyriakos
name: Zhang, Jinying
name: Briggs, G. Andrew D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: By applying a new technique for dynamic nuclear polarization involving simultaneous excitation of electronic and nuclear transitions, we have enhanced the nuclear polarization of the nitrogen nuclei in 15N@C60 by a factor of 1000 at a fixed temperature of 3 K and a magnetic field of 8.6 T, more than twice the maximum enhancement reported to date. This methodology will allow the initialization of the nuclear qubit in schemes exploiting N@C60 molecules as components of a quantum information processing device.
description: 9 pages, 5 figures
Non-Gaussianity after many-field reheating
Creators: name: Carrilho, Pedro
name: Mulryne, David
name: Ronayne, John
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We numerically investigate reheating after quadratic inflation with up to 65 fields, focusing on the production of non-Gaussianity. We consider several sets of initial conditions, masses and decay rates. As expected we find that the reheating phase can have a significant effect on the non-Gaussian signal, but that for this number of fields a detectable level of non-Gaussianity requires the initial conditions, mass range and decay rates to be ordered in a particular way. We speculate on whether this might change in the N-flation limit.
description: 8 pages, 3 figures
Generic strong coupling behavior of Cooper pairs in the surface of superfluid nuclei
Creators: name: Pillet, N.
name: Sandulescu, N.
name: Schuck, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: With realistic HFB calculations, using the D1S Gogny force, we reveal a generic behavior of concentration of small sized Cooper pairs (2-3 fm) in the surface of superfluid nuclei. This study confirms and extends previous results given in the literature that use more schematic approaches.
description: 5 pages, 5 figures
Native social work education: students making cultural relevance
Creators: name: Sharpe, Judith
Publisher: name: University of British Columbia
Year: 2009

description: In the field of Native social work education, the concept of "culturally relevant education" is poorly defined despite increasing student enrollment and development of programs. This study employed a qualitative approach to explore with twelve students, enrolled in a B.S.W. program at a Native college in Merritt, B.C., their experiences and meanings of this concept. In-depth interviews and a focus group were conducted; data were transcribed and analyzed, using grounded theory and narrative analysis, to generate concepts, elements, and themes. Four interactive themes emerged, that when taken together, tell a story of what "culturally relevant education" meant to these Native students: the four themes were Learning What It Is To Be Indian; Healing Residual Personal and Cultural Issues; Integrating the Two Worlds, Aboriginal and White; and, Becoming the Teacher. The principle finding was that students made cultural relevance for themselves. Various elements, such as Indian Studies courses and Native instructors, seemed to support students making cultural relevance. This study indicates that making cultural relevance was highly individualistic and situation-specific, and required competence in mainstream culture and a First Nation's culture. Educators, programs, and institutions can, and should, help students access the necessary elements. The main criterion for determining such elements should be the extent to which they strengthen student's Aboriginal self- identity and worth: it seems that strong Aboriginal self-identity and worth is what supported the student's ability to make cultural relevance. Further research into the phenomenon of making cultural relevance is indicated.
In situ TEM Investigations of Catalysis Dynamics in Service Conditions
Creators: name: Boao Song
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: In this dissertation, we studied the behavior of nanoscale materials exposed to liquid, gas, and high temperature environments. This study was enabled by the utilization of in situ transmission electron microscopy (TEM) for the study of nanoscale reactions. We performed our in situ TEM evaluation using silicon nitride (SiN)-membrane gas cells, SiN-membranes with resistive Joule heating, and SiN-membrane liquid cells. Specifically, key insights are obtained for synthesis of two-dimensional (2D) heterostructures, degradation mechanisms of 2D-supported heterogeneous catalysts under service conditions, and behavior of high-entropy alloy materials in redox gaseous environments.
Boundary-dependent Self-dualities, Winding Numbers and Asymmetrical Localization in non-Hermitian Quasicrystals
Creators: name: Cai, Xiaoming
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study a non-Hermitian Aubry-André-Harper model with both nonreciprocal hoppings and complex quasiperiodical potentials, which is a typical non-Hermitian quasicrystal. We introduce boundary-dependent self-dualities in this model and obtain analytical results to describe its Asymmetrical Anderson localization and topological phase transitions. We find that the Anderson localization is not necessarily in accordance with the topological phase transitions, which are characteristics of localization of states and topology of energy spectrum respectively. Furthermore, in the localized phase, single-particle states are asymmetrically localized due to non-Hermitian skin effect and have energy-independent localization lengths. We also discuss possible experimental detections of our results in electric circuits.
description: 6 pages, 3 figures
Status of the Hadronic Light-by-Light Contribution to the Muon Anomalous Magnetic Moment
Creators: name: Bijnens, Johan
name: Prades, Joaquim
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We review the present status of the hadronic light-by-light contribution to muon g-2 and critically compare recent calculations.
description: 10 pages, 3 figures. Invited talk presented by JP at "Final Euridice Meeting", August 24-28 2006, Kazimierz, Poland
Quasi-Periodic Oscillations from Magnetorotational Turbulence
Creators: name: Arras, Phil
name: Blaes, Omer
name: Turner, Neal J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Quasi-periodic oscillations (QPOs) in the X-ray lightcurves of accreting neutron star and black hole binaries have been widely interpreted as being due to standing wave modes in accretion disks. These disks are thought to be highly turbulent due to the magnetorotational instability (MRI). We study wave excitation by MRI turbulence in the shearing box geometry. We demonstrate that axisymmetric sound waves and radial epicyclic motions driven by MRI turbulence give rise to narrow, distinct peaks in the temporal power spectrum. Inertial waves, on the other hand, do not give rise to distinct peaks which rise significantly above the continuum noise spectrum set by MRI turbulence, even when the fluid motions are projected onto the eigenfunctions of the modes. This is a serious problem for QPO models based on inertial waves.
description: 4 pages, 2 figures. submitted to apj
Patterns theory and geodesic automatic structure for a class of groups
Creators: name: Elder, Murray J
Publisher: name: arXiv
Year: 2006
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F65

description: We introduce a theory of "patterns" in order to study geodesics in a certain class of group presentations. Using patterns we show that there does not exist a geodesic automatic structure for certain group presentations, and that certain group presentations are almost convex.
description: Appeared in 2003. I am putting all my past papers on arxiv
Interactions for Winding Strings in Misner Space
Creators: name: Hikida, Yasuaki
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute correlation functions of closed strings in Misner space, a big crunch big bang universe. We develop a general method for correlators with twist fields, which are relevant for the investigation on the condensation of winding tachyon. We propose to compute the correlation functions by performing an analytic continuation of the results in C/Z_N Euclidean orbifold. In particular, we obtain a finite result for a general four point function of twist fields, which might be important for the interpretation as the quartic term of the tachyon potential. Three point functions are read off through the factorization, which are consistent with the known results.
description: 29 pages, no figure; typos corrected, references added
Energetics of synchronisation for model flagella and cilia
Creators: name: Liao, Weida
name: Lauga, Eric
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Synchronisation is often observed in the swimming of flagellated cells, either for multiple appendages on the same organism or between the flagella of nearby cells. Beating cilia are also seen to synchronise their dynamics. In 1951, Taylor showed that the observed in-phase beating of the flagella of co-swimming spermatozoa was consistent with minimisation of the energy dissipated in the surrounding fluid. Here we revisit Taylor's hypothesis for three models of flagella and cilia: (1) Taylor's waving sheets with both longitudinal and transverse modes, as relevant for flexible flagella; (2) spheres orbiting above a no-slip surface to model interacting flexible cilia; and (3) whirling rods above a no-slip surface to address the interaction of nodal cilia. By calculating the flow fields explicitly, we show that the rate of working of the model flagella or cilia is minimised in our three models for (1) a phase difference depending on the separation of the sheets and precise waving kinematics; (2) in-phase or opposite-phase motion depending on the relative position and orientation of the spheres; and (3) in-phase whirling of the rods. These results will be useful in future models probing the dynamics of synchronisation in these setups.
Quantum Optical Random Walk: Quantization Rules and Quantum Simulation of Asymptotics
Creators: name: Ellinas, Demosthenes
name: Smyrnakis, Ioannis
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Rules for quantizing the walker+coin parts of a classical random walk are provided by treating them as interacting quantum systems. A quantum optical random walk (QORW), is introduced by means of a new rule that treats quantum or classical noise affecting the coin's state, as sources of quantization. The long term asymptotic statistics of QORW walker's position that shows enhanced diffusion rates as compared to classical case, is exactly solved. A quantum optical cavity implementation of the walk provides the framework for quantum simulation of its asymptotic statistics. The simulation utilizes interacting two-level atoms and/or laser randomly pulsating fields with fluctuating parameters.
description: 18 pages, 3 figures
MBC Ventures, Inc.: An Employee Stock Ownership Plan with a union partner
Creators: name: Hoffman, Richard C.
name: Brown, M. O.
name: Shipper, Frank
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: Employee Stock Ownership Plan
Employee Ownership
United Steelworkers
ESOP
Governance

description: MBC Ventures, Inc. is a 161 year-old company that is going through both product and organizational transitions. It has left one of its traditional product lines, paint brushes, behind and has developed a new one, solar panels. The organization has gone from being part of a large diversified conglomerate to a small employee-owned company with two distinct product lines. The second product line, solar panels, has been added only recently. The organization has gone from being a product unit within a hierarchically-oriented, large diversified conglomerate to an independent, team-oriented, egalitarian organization. The conglomerate was a publically traded organization; whereas, MBC Ventures is employee owned. The transition to employee ownership would not have been possible without the cooperation and financial assistance of the United Steelworkers union. These transitions that have occurred since 1990 have not been without problems including two major recessions. Currently, the company is doing quite well. This case discusses how the firm has implemented employee ownership and participatory management, and its decision to diversify into a new growth product line. Some financial results are provided.
A correspondence between H3+ WZW and Liouville theories on discs
Creators: name: Hosomichi, Kazuo
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss how the disc correlators of H3+ WZW model are determined in terms of those of Liouville theory.
description: 2 pages, proceedings of the Cargese Summer School, May 22 to June 3, 2006
Polymer packaging and ejection in viral capsids: shape matters
Creators: name: Ali, I.
name: Marenduzzo, D.
name: Yeomans, J. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We use a mesoscale simulation approach to explore the impact of different capsid geometries on the packaging and ejection dynamics of polymers of different flexibility. We find that both packing and ejection times are faster for flexible polymers. For such polymers a sphere packs more quickly and ejects more slowly than an ellipsoid. For semiflexible polymers, however, the case relevant to DNA, a sphere both packs and ejects more easily. We interpret our results by considering both the thermodynamics and the relaxational dynamics of the polymers. The predictions could be tested with bio-mimetic experiments with synthetic polymers inside artificial vesicles. Our results suggest that phages may have evolved to be roughly spherical in shape to optimise the speed of genome ejection, which is the first stage in infection.
description: 4 pages, 4 figures
Higher dimensional global monopole with cosmological term
Creators: name: Rahaman, F.
name: Ghosh, P.
name: Kalam, M.
name: Gayen, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the space-time of a global monopole in a five dimensional space-time in presence of the cosmological term. Also the gravitational properties of the monopole solution are discussed.
description: 9 pages
Bayesian inference for transportation origin-destination matrices: the Poisson-inverse Gaussian and other Poisson mixtures
Creators: name: Perrakis, Konstantinos
name: Karlis, Dimitris
name: Cools, Mario
name: Janssens, Davy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: In this paper we present Poisson mixture approaches for origin-destination (OD) modeling in transportation analysis. We introduce covariate-based models which incorporate different transport modeling phases and also allow for direct probabilistic inference on link traffic based on Bayesian predictions. Emphasis is placed on the Poisson-inverse Gaussian as an alternative to the commonly-used Poisson-gamma and Poisson-lognormal models. We present a first full Bayesian formulation and demonstrate that the Poisson-inverse Gaussian is particularly suited for OD analysis due to desirable marginal and hierarchical properties. In addition, the integrated nested Laplace approximation (INLA) is considered as an alternative to Markov chain Monte Carlo and the two methodologies are compared under specific modeling assumptions. The case study is based on 2001 Belgian census data and focuses on a large, sparsely-distributed OD matrix containing trip information for 308 Flemish municipalities.
Multiplicities of simple closed geodesics and hypersurfaces in Teichmüller space
Creators: name: McShane, Greg
name: Parlier, Hugo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Using geodesic length functions, we define a natural family of real codimension 1 subvarieties of Teichmüller space, namely the subsets where the lengths of two distinct simple closed geodesics are of equal length. We investigate the point set topology of the union of all such hypersurfaces using elementary methods. Finally, this analysis is applied to investigate the nature of the Markoff conjecture.
Influence of triaxial deformation on wobbling motion in even-even nuclei
Creators: name: Qi, Bin
name: Zhang, Hui
name: Wang, Shou Yu
name: Chen, Qi Bo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The influence of triaxial deformation $γ$ on the purely collective form of wobbling motion in even-even nuclei are discussed based on the triaxial rotor model. It is found that the harmonic approximation is realized well when $γ=30^{\circ}$ for the properties of energy spectra and electric quadrupole transition probabilities, while this approximation gets bad when $γ$ deviates from $30^{\circ}$. A recent data from Coulomb excitation experiment, namely $3_1^+$ and $2_2^+$ for the $^{110}$Ru are studied and might be suggested as the bandhead of the wobbling bands. In addition, two types of angular momentum geometries for wobbling motion, stemming from different $γ$ values, are exhibited by azimuthal plots.
A modernist’s realist fiction: on three realist novellas by Ye Zhaoyan
Creators: name: Zhang, Hongyang
Publisher: name: University of British Columbia
Year: 2009

description: Among contemporary Chinese modernist writers, Ye Zhaoyan is highly respected for the sincere and honest style that he has displayed in his modernist experimental fiction. His modernist experiments have been the focus of many previous studies. Ye has also been a realist from the very beginning of his literary career. His realist fiction, however, is still largely ignored by critics. Since there has been a surprising literary trend in recent years in which many modernist writers such as Yu Hua, Su Tong, Ge Fei, Hong Feng and Bei Chun have switched to write realist fiction, it is of interest and significance to study Ye's realist practice which proceeds the current trend. In this thesis, the author will analyze the characteristics of Ye Zhaoyan's realist fiction using as examples three of his novellas, "Hanging Green Apples," "Love Song" and "Faded Shadows." By comparing the characteristics of the three novellas with those of realist fiction in the immediate post-Mao era, traditional fiction and modernist fiction, the author suggests that Ye Zhaoyan's realist fiction reflect his attempt to bridge the gap between realism and modernism, and to weave popular fiction elements into serious literature. Ye's writings represent the efforts of the Chinese modernists to adjust to the current change in the cultural trend by lessening rather than intensifying the contradiction between the old and the new, and between the Chinese tradition and the impact of Western culture.
Quantitative vectorial spin analysis in ARPES: Bi/Ag(111) and Pb/Ag(111)
Creators: name: Meier, Fabian
name: Dil, Hugo
name: Lobo-Checa, Jorge
name: Patthey, Luc
name: Osterwalder, Juerg
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The concept of vectorial spin analysis in spin and angle resolved photoemission is illustrated in this report. Two prototypical systems, Bi/Ag(111)(sqrt3 x sqrt3)R30 and Pb/Ag(111)(sqrt3 x sqrt3)R30, which show a large Rashba type spin-orbit splitting, were investigated by means of spin and angle resolved photoemission. The spin polarization vectors of individual bands are determined by a two-step fitting routine. First, the measured intensities are fitted with an appropriate number of suitable peaks to quantify the contributions of the individual bands, then the measured spin polarization curves are fitted by varying for each band the polarization direction and its magnitude. We confirm that the surface states experience a large spin splitting. Moreover, we find that all surface state bands are 100 percent spin polarized, and that for some states spin polarization vectors rotate out of the surface plane.
description: 9 pages, 2 tables, 8 figures
The shape of high order correlation functions in CMB anisotropy maps
Creators: name: Brunier, T.
name: Bernardeau, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a phenomenological investigation of non-Gaussian effects that could be seen on CMB temperature maps. Explicit expressions for the temperature correlation functions are given for different types of primordial mode couplings. We argue that a simplified description of the radial transfer function for the temperature anisotropies allows to get insights into the general properties of the bi and tri-spectra. The accuracy of these results is explored together with the use of the small scale approximation to get explicit expressions of high order spectra. The bi-spectrum is found to have alternate signs for the successive acoustic peaks. Sign patterns for the trispectra are more complicated and depend specifically on the type of metric couplings. Local primordial couplings are found to give patterns that are different from those expected from weak lensing effects.
description: 31 pages, 17 figures, submitted to Phys. Rev. D
Effect of Age and Fitness on Vascular Function and Oxidative Stress During Acute Inflammation
Creators: name: Lefferts, Elizabeth Cornellia
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: Acute inflammation increases cardiovascular event risk, especially with increasing age. The elevated risk in older adults may be linked to changes in vascular function caused by acute inflammation. Alternatively, high cardiorespiratory fitness with aging is cardio-protective both for risk and vascular function and may therefore be protective during acute inflammation. In young adults, oxidative stress has been linked to the reductions in vascular function during acute inflammation, however the effect of acute inflammation on vascular function with aging is inconclusive. Aging increases oxidative stress thus may explain the discrepant findings on vascular function in older adults during acute inflammation. The aims of this study were 1) to determine if fitness moderates the vascular response to acute inflammation with aging and 2) to determine if oral antioxidant administration eliminates vascular dysfunction during acute inflammation. Methods: Forty-five healthy adults (15 young, 15 older unfit, 15 older fit) completed vascular function assessments at baseline and 24h after the induction of acute inflammation with the typhoid vaccine. Microvascular reactivity and brachial flow-mediated dilation (FMD) were assessed via near-infrared spectroscopy and ultrasound, respectively, following a 5-min occlusion. A subset of individuals (9 young, 16 older adults) consumed 2g of Vitamin C during acute inflammation and had vascular function reassessed. Venous blood samples were taken to measure markers of inflammation and oxidative stress. Results: Inflammation was induced as both interleukin-6 and C-reactive protein were elevated from baseline at 24h (p<0.01). FMD was reduced in all groups during acute inflammation (p<0.01), however no changes were observed in microvascular reactivity (p>0.05). Vitamin C resurrected FMD back to baseline values in both younger and older adults during acute inflammation (p<0.01) but did not impact markers of oxidative stress (p>0.05). Conclusion: Our data suggest maintaining high cardiorespiratory fitness with aging does not alter the brachial endothelial response to acute inflammation. We further demonstrate that oral Vitamin C exerts beneficial effects and restores endothelial function during acute inflammation in older adults. The changes in endothelial function in both younger and older adults is likely related to antioxidant capacity and alterations in nitric oxide bioavailability.
Rotation of Cosmic Voids and Void-Spin Statistics
Creators: name: Lee, Jounghun
name: Park, Daeseong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a theoretical study of void spins and their correlation properties. The concept of the spin angular momentum for an unbound void is introduced to quantify the effect of the tidal field on the distribution of matter that make up the void. Both the analytical and numerical approaches are used for our study. Analytically, we adopt the linear tidal torque model to evaluate the void spin-spin and spin-density correlations, assuming that a void forms in the initial region where the inertia momentum and the tidal shear tensors are maximally uncorrelated with each other. Numerically, we use the Millennium run galaxy catalog to find voids and calculate their spin statistics. The numerical results turn out to be in excellent agreement with the analytic predictions, both of which consistently show that there are strong spatial alignments between the spin axes of neighbor voids and strong anti-alignments between the void spin axes and the directions to the nearest voids. We expect that our work will provide a deeper insight into the origin and properties of voids and the large scale structure.
description: accepted version, ApJ in press, the concept of void spins explained, typos corrected
Descriptive and Predictive Analysis of Aggregating Functions in Serverless Clouds: the Case of Video Streaming
Creators: name: Wu, Shangrui
name: Denninnart, Chavit
name: Li, Xiangbo
name: Wang, Yang
name: Salehi, Mohsen Amini
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Serverless clouds allocate multiple tasks (e.g., micro-services) from multiple users on a shared pool of computing resources. This enables serverless cloud providers to reduce their resource usage by transparently aggregate similar tasks of a certain context (e.g., video processing) that share the whole or part of their computation. To this end, it is crucial to know the amount of time-saving achieved by aggregating the tasks. Lack of such knowledge can lead to uninformed merging and scheduling decisions that, in turn, can cause deadline violation of either the merged tasks or other following tasks. Accordingly, in this paper, we study the problem of estimating execution-time saving resulted from merging tasks with the example in the context of video processing. To learn the execution-time saving in different forms of merging, we first establish a set of benchmarking videos and examine a wide variety of video processing tasks -- with and without merging in place. We observed that although merging can save up to 44% in the execution-time, the number of possible merging cases is intractable. Hence, in the second part, we leverage the benchmarking results and develop a method based on Gradient Boosting Decision Tree (GBDT) to estimate the time-saving for any given task merging case. Experimental results show that the method can estimate the time-saving with the error rate of 0.04, measured based on Root Mean Square Error (RMSE).
Small solar system objects on highly inclined orbits: Surface colours and lifetimes
Creators: name: Hromakina, T.
name: Belskaya, I.
name: Krugly, Yu.
name: Rumyantsev, V.
name: Golubov, O.
name: Kyrylenko, I.
name: Ivanova, O.
name: Velichko, S.
name: Izvekova, I.
name: Sergeyev, A.
name: Slyusarev, I.
name: Molotov, I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Less than one percent of the discovered small solar system objects have highly inclined orbits ($i>60^{\circ}$), and revolve around the Sun on near-polar or retrograde orbits. The origin and evolutionary history of these objects are not yet clear. In this work we study the surface properties and orbital dynamics of selected high-inclination objects. BVRI photometric observations were performed in 2019-2020 using the 2.0m telescope at the Terskol Observatory and the 2.6m telescope at the Crimean Astrophysical Observatory. Additionally, we searched for high-inclination objects in the Sloan Digital Sky Survey and Pan-STARRS. The dynamics of the selected objects was studied using numerical simulations. We obtained new photometric observations of six high-inclination objects. All of the objects have similar $B-V$, $V-R$, $R-I$ colours, which are close to those of moderately red TNOs and grey Centaurs. The photometric data that were extracted from the all-sky surveys also correspond to moderately red surfaces of high-inclination objects. No signs of ultra-red material on the surface of high-inclination asteroids were found, which supports the results of previous works. The comet C/2018 DO4 (Lemmon) revealed some complex morphology with structures that could be associated with particles that were ejected from the cometary nucleus. For objects 2013 LU28, 2015 KZ120, and 2020 EP we estimated future and past lifetimes on their orbits. It appears that the orbits of considered objects are strongly chaotic, and with the available accuracy of the orbital elements no reliable predictions can be made about their distant past or future. The lifetimes of high-inclination objects turned out to be highly non-sensitive to the precision of the orbital elements, and to the Yarkovsky orbital drift.
Spin-polarized fermions with $p$-wave interactions
Creators: name: Top, Furkan Çağrı
name: Margalit, Yair
name: Ketterle, Wolfgang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study quantum degenerate Fermi gases of ${^6}$Li atoms at high densities ($10^{15}$ cm$^{-3}$) and observe elastic and inelastic $p$-wave collisions far away from any Feshbach resonance. $P$-wave evaporation reaches temperatures of $T/T_F=0.42$ partially limited by the slow transfer of energy from high to low velocities through $p$-wave collisions. Via cross-dimensional thermalization, the $p$-wave background scattering volume is determined to be $\lvert V_p \rvert =(39^{+1.3}_{-1.6}a_0)^3$. $P$-wave dipolar relaxation creates a metastable mixture of the lowest and highest hyperfine states.
description: 10 pages, 8 figures