cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: TESTING INTERPRETATIONS OF THE DISPLACEMENT MAGNITUDE OF THE TETON FAULT AND UPLIFT OF THE TETON RANGE, WYOMING WITH INTEGRATED FLEXURAL-KINEMATIC AND THERMAL MODELING
Creators: name: Helfrich, Autumn
Publisher: name: University of Kentucky Libraries
Year: 2020
Subjects: subject: FOS: Earth and related environmental sciences

description: The Teton fault is a range-front normal fault in northwestern Wyoming. Previous estimates of the maximum displacement (Dmax) on the Teton fault cover a wide range (2 - 11 km). Discrepancies also exist regarding the slip onset timing, which spans 2 - 13 Ma. To address these discrepancies, the exhumation history of the Teton Range is here investigated using forward flexural-kinematic (Move) and thermal-kinematic (Pecube) models that can be compared with previously reported apatite fission track (AFT) and apatite (U-Th)/He (AHe) ages from Mount Moran, which has been previously hypothesized to represent the paleo-center of the Teton fault.

In this study, kinematic models that include flexural isostasy and erosion were constructed to test possible structural solutions for Teton fault evolution. Free parameters include fault dip angle, elastic thickness (Te), depth of detachment (Zd) and magnitude (Dmax) and duration of slip. Flexural parameters and the fault subsurface geometry were constrained by comparing model results with the present-day wavelength of footwall uplift and structural configuration of the Jackson Hole basin. This led to the identification of a reference model that includes a surface fault dip of 70°, Te of 5 km, and Zd of 15 km. This reference model structural evolution is then used to create velocity fields for the thermalkinematic models, which produces a 2D thermal history that includes predicted AFT and AHe ages, to be compared with the observed ages.

The flexural-kinematic models yield predictions of the footwall uplift contribution to total fault slip, which can then be compared to the range of Dmax estimates. Using these model results, previous estimates for Dmax (2 - 9 km) correspond to footwall uplifts of 0.7- 2.4 km. For comparison, the modern footwall relief at Mount Moran (~1.8 km) and Grand Teton (~2.2 km) would yield modeled Dmax estimates of 6 - 8 km, which is a minimum estimate, as these values do not account for an estimated ~2 km of overburden erosion. Thus, these model results indicate that the Dmax for the Teton fault is likely >9 km. To produce the footwall uplift necessary to exhume reset AFT ages observed at the base of the Moran transect (~4.2 km), flexural-kinematic models require Dmax estimates of 13 - 17 km. Results from the thermal-kinematic history that best match observed AHe and AFT data include Dmax estimates of 15 - 17 km. These preferred models also suggest that the onset Teton fault motion and footwall exhumation began ~12 Ma.
description: © 2020 Autumn Helfrich
Bistability and Hysteresis of Intersubband Absorption in Strongly Interacting Electrons on Liquid Helium
Creators: name: Konstantinov, Denis
name: Dykman, M. I.
name: Lea, M. J.
name: Monarkha, Yu. P.
name: Kono, K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study nonlinear inter-subband microwave absorption of electrons bound to the liquid helium surface. Already for a comparatively low radiation intensity, resonant absorption due to transitions between the two lowest subbands is accompanied by electron overheating. The overheating results in a significant population of higher subbands. The Coulomb interaction between electrons causes a shift of the resonant frequency, which depends on the population of the excited states and thus on the electron temperature $T_e$. The latter is determined experimentally from the electron photoconductivity. The experimentally established relationship between the frequency shift and $T_e$ is in reasonable agreement with the theory. The dependence of the shift on the radiation intensity introduces nonlinearity into the rate of the inter-subband absorption resulting in bistability and hysteresis of the resonant response. The hysteresis of the response explains the behavior in the regime of frequency modulation, which we observe for electrons on liquid $^3$He and which was previously seen for electrons on liquid $^4$He.
On the effect of oxygen partial pressure on the chromium distribution coefficient in melt-grown ruby crystals
Creators: name: Ganschow, Steffen
name: Klimm, Detlef
name: Bertram, Rainer
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Small ruby crystals were grown by the Czochralski technique in different atmospheres and their actual chromium content was analysed by a wet chemical method. The chromium distribution coefficient k was found to be strongly dependent on oxygen partial pressure p(O2). It ranges from k=0.3 in a reducing atmosphere to k=1.2 in a slightly oxidizing atmosphere and to a good approximation k depends linearly on log(p(O2)). The experimental data are discussed on the basis of thermodynamic equilibrium calculations.
Time-dependent density functional theory on a lattice
Creators: name: Farzanehpour, Mehdi
name: Tokatly, I. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A time-dependent density functional theory (TDDFT) for a quantum many-body system on a lattice is formulated rigorously. We prove the uniqueness of the density-to-potential mapping and demonstrate that a given density is $v$-representable if the initial many-body state and the density satisfy certain well defined conditions. In particular, we show that for a system evolving from its ground state any density with a continuous second time derivative is $v$-representable and therefore the lattice TDDFT is guaranteed to exist. The TDDFT existence and uniqueness theorem is valid for any connected lattice, independently of its size, geometry and/or spatial dimensionality. The general statements of the existence theorem are illustrated on a pedagogical exactly solvable example which displays all details and subtleties of the proof in a transparent form. In conclusion we briefly discuss remaining open problems and directions for a future research.
description: 12 pages, 1 figure
Higher Derivative Corrections to Holographic Entanglement Entropy for AdS Solitons
Creators: name: Ogawa, Noriaki
name: Takayanagi, Tadashi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the behaviors of holographic entanglement entropy for AdS soliton geometries in the presence of higher derivative corrections. We calculate the leading higher derivative corrections for the AdS5 setup in type IIB string and for the AdS4,7 ones in M-theory. We also study the holographic entanglement entropy in Gauss-Bonnet gravity and study how the confinement/deconfinement phase transition observed in AdS solitons is affected by the higher derivative corrections.
description: 1+25 pages, 12 figures, LaTeX; v2: footnotes and references added
Dynamical Heterogeneity in a Highly Supercooled Liquid under a Sheared Situation
Creators: name: Yamamoto, Hideyuki Mizuno Ryoichi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In the present study, we performed molecular-dynamics simulations and investigated dynamical heterogeneity in a supercooled liquid under a steady shear flow. Dynamical heterogeneity can be characterized by three quantities: the correlation length $ξ_4(t)$, the intensity $χ_4(t)$, and the lifetime $τ_\text{hetero}(t)$. We quantified all three quantities by means of the correlation functions of the particle dynamics, i.e., the four-point correlation functions, which are extended to the sheared condition. Here, to define the local dynamics, we used two time intervals $t=τ_α$ and $τ_{\text{ngp}}$; $τ_α$ is the $α$-relaxation time, and $τ_{\text{ngp}}$ is the time at which the non-Gaussian parameter of the Van Hove self-correlation function is maximized. We discovered that all three quantities ($ξ_4(t)$, $χ_4(t)$, and $τ_\text{hetero}(t)$) decrease as the shear rate $\dotγ$ of the steady shear flow increases. For the time interval $t=τ_α$, the scalings $ξ_4(τ_α) \sim \dotγ^{-0.08}$, $χ_4(τ_α) \sim \dotγ^{-0.26}$, and $τ_\text{hetero}(τ_α) \sim \dotγ^{-0.88}$ were obtained. The steady shear flow suppresses the heterogeneous structure as well as the lifetime of the dynamical heterogeneity. In addition, our results demonstrated that the $α$-relaxation time $τ_α$ dependences of three quantities coincide with those at equilibrium. This means that all three quantities of the dynamical heterogeneity can be mapped onto those in the equilibrium state through $τ_α$.
description: 11 pages, 10 figures
On EM algorithms and their proximal generalizations
Creators: name: Chrétien, Stéphane
name: Hero, Alfred O.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: In this paper, we analyze the celebrated EM algorithm from the point of view of proximal point algorithms. More precisely, we study a new type of generalization of the EM procedure introduced in \cite{Chretien&Hero:98} and called Kullback-proximal algorithms. The proximal framework allows us to prove new results concerning the cluster points. An essential contribution is a detailed analysis of the case where some cluster points lie on the boundary of the parameter space.
A Novel Sequence-Based Antigenic Distance Measure for H1N1, with Application to Vaccine Effectiveness and the Selection of Vaccine Strains
Creators: name: Pan, Keyao
name: Subieta, Krystina C.
name: Deem, Michael W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: H1N1 influenza causes substantial seasonal illness and was the subtype of the 2009 influenza pandemic. Precise measures of antigenic distance between the vaccine and circulating virus strains help researchers design influenza vaccines with high vaccine effectiveness. We here introduce a sequence-based method to predict vaccine effectiveness in humans. Historical epidemiological data show that this sequence-based method is as predictive of vaccine effectiveness as hemagglutination inhibition (HI) assay data from ferret animal model studies. Interestingly, the expected vaccine effectiveness is greater against H1N1 than H3N2, suggesting a stronger immune response against H1N1 than H3N2. The evolution rate of hemagglutinin in H1N1 is also shown to be greater than that in H3N2, presumably due to greater immune selection pressure.
description: 26 pages, 7 figures, 2 tables, supplement
Holographic Instanton Liquid and chiral transition
Creators: name: Gwak, Bogeun
name: Kim, Minkyoo
name: Lee, Bum-Hoon
name: Seo, Yunseok
name: Sin, Sang-Jin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the presence of uniform D-instanton charges, quarks can be confined although gluons are not, because baryon vertices are allowed due to the net repulsive force on the on the probe D-branes. Since there is no scale in the geometry itself apart from the horizon size, there is no Hawking-Page transition. As a consequence, the D7 brane embedding can encode the effect of the the finite temperature as well as finite baryon density even for low temperature. The probe D-brane embedding, however, undergoes a chiral phase transition according to the temperature and density parameter. We studied such phase transitions and calculated the constituent quark mass, chiral condensation and the binding energy of baryons as function of the density. The baryon vertex melting is identified as the quark deconfinement. We draw phase diagram according to these transitions.
description: 33 pages, 21 figures. arXiv admin note: extreme text overlap with arXiv:1105.2872
Maximizing Utility of Consumption Subject to a Constraint on the Probability of Lifetime Ruin
Creators: name: Bayraktar, Erhan
name: Young, Virginia R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Portfolio Management (q-fin.PM)
subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Economics and business
subject: FOS: Mathematics

description: In this note, we explicitly solve the problem of maximizing utility of consumption (until the minimum of bankruptcy and the time of death) with a constraint on the probability of lifetime ruin, which can be interpreted as a risk measure on the whole path of the wealth process.
description: Keywords: Utility maximization from consumption, probability of lifetime ruin constraint, nonconvex risk constraint on the entire path of the wealth process
High Speed Navigation of UGVs in Rough Unknown Terrains
Creators: name: Wilson, Graeme Neff
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Electronics and Electrical
subject: Mechanical
subject: Robotics
subject: Unmanned Ground Vehicles
subject: Terrain Assessment
subject: Terrain Identificaiton
subject: Speed Selection

description: The traversal of rough a priori unknown terrain by an Unmanned Ground Vehicle (UGV) at high-speed requires the assessment of terrain in front of the vehicle as well as algorithms to select a speed based on the identified terrain. Current techniques are either susceptible to miss-classification, do not address the challenge of speed selection, or have not been experimentally tested. This thesis proposes a geometric terrain identification technique where a range sensor captures a 3D terrain point cloud and uses the standard deviation of the terrain point elevations to determine a roughness score. Using this roughness score three methods were proposed in this thesis to select a fast but safe allowable speed for a UGV based on predicting the force the terrain will exert on the UGV while driving. These methods were experimentally tested on rough outdoor terrain to demonstrate and compare their performance.
Cell Surface Receptors Expression Profile Of Human Synovial Mesenchymal Stem Cells In-Situ And In-Vitro From Normal And Osteoarthritic Knee Joints
Creators: name: Al-Jezani, Nedaa
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Human Development
subject: Medicine and Surgery
subject: Stem cells, osteoarthritis, knee joint, synovial membrane, mesenchymal stem cells, cell surface markers

description: Osteoarthritis is a chronic disease that results in the degeneration of the articular cartilage, eventually affecting the whole joint. Due to the lack of regenerative capacity in the articular cartilage, synovial mesenchymal stem cells, having chondrogenic capacity and derived from the synovium (SMSCs) are an attractive source for articular cartilage regeneration. However, it is important to identify the optimal SMSCs that have tri-lineage potential, which will help the regeneration of the whole joint. Unfortunately, MSC populations are phenotypically heterogeneous, in terms of their cell surface expression. In this project, SMSCs derived from OA joint with the optimal differentiation capacity display a marker profile of CD90+, CD44+, and CD73+. However, the same profile was expressed on clones that didn’t present with multi-potential differentiation capacity. Therefore, additional markers are necessary to accurately purify SMSCs that would may have increased regenerative capacity for use in cell therapies for patients with OA.
Measurement of the small-scale 3D Lyman-$α$ forest power spectrum
Creators: name: Abdul-Karim, Marie Lynn
name: Armengaud, Eric
name: Mention, Guillaume
name: Chabanier, Solène
name: Ravoux, Corentin
name: Lukić, Zarija
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Small-scale correlations measured in the Lyman-$α$ (Ly$α$) forest encode information about the intergalactic medium and the primordial matter power spectrum. In this article, we present and implement a simple method to measure the 3-dimensional power spectrum, $P_{\rm 3D}$, of the Ly$α$ forest at wavenumbers $k$ corresponding to small, $\sim$ Mpc scales. In order to estimate $P_{\rm 3D}$ from sparsely and unevenly distributed data samples, we rely on averaging 1-dimensional Fourier Transforms, as previously carried out to estimate the 1-dimensional power spectrum of the Ly$α$ forest, $P_{\rm 1D}$. This methodology exhibits a very low computational cost. We confirm the validity of this approach through its application to Nyx cosmological hydrodynamical simulations. Subsequently, we apply our method to the eBOSS DR16 Ly$α$ forest sample, providing as a proof of principle, a first $P_{\rm 3D}$ measurement averaged over two redshift bins $z=2.2$ and $z=2.4$. This work highlights the potential for forthcoming $P_{\rm 3D}$ measurements, from upcoming large spectroscopic surveys, to untangle degeneracies in the cosmological interpretation of $P_{\rm 1D}$.
description: 28 pages, 9 figures; matches published version
On the unitary representation theory of locally compact contraction groups
Creators: name: Carter, Max
Publisher: name: arXiv
Year: 2023
Subjects: subject: Group Theory (math.GR)
subject: Operator Algebras (math.OA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20C25, 20G05, 22D10, 22D12, 22D25, 43A65

description: The unitary representation theory of locally compact contraction groups and their semi-direct products with $\mathbb{Z}$ is studied. We put forward the problem of completely characterising such groups which are type I or CCR and this article provides a stepping stone towards a solution to this problem. In particular, we determine new examples of type I and non-type-I groups in this class, and we completely classify the irreducible unitary representations of the torsion-free groups, which are shown to be type I. When these groups are totally disconnected, they admit a faithful action by automorphisms on an infinite locally-finite regular tree; this work thus provides new examples of automorphism groups of regular trees with interesting representation theory, adding to recent work on this topic.
description: 48 pages. To appear in the Journal of Lie Theory
The optical absorption in indirect semiconductor to semimetal PtSe2 arises from direct transitions
Creators: name: Tharrault, Marin
name: Ayari, Sabrine
name: Arfaoui, Mehdi
name: Desgué, Eva
name: Goff, Romaric Le
name: Morfin, Pascal
name: Palomo, José
name: Rosticher, Michael
name: Jaziri, Sihem
name: Plaçais, Bernard
name: Legagneux, Pierre
name: Carosella, Francesca
name: Voisin, Christophe
name: Ferreira, Robson
name: Baudin, Emmanuel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: $\rm{PtSe_2}$ is a van der Waals material transitioning from an indirect bandgap semiconductor to a semimetal with increasing thickness. Its absorption threshold has been conjectured to originate from interband indirect transitions. By quantitative comparison between broadband ($0.8 - 3.0\,\rm{eV}$) optical absorption of high-quality exfoliated crystals and DFT ab-initio simulations, we prove instead that the optical absorption arises only from direct transitions. This understanding allows us to shed light on the semiconductor to semimetal transition and to explore the effect of stacking and excitons on the optical absorption.
Identification and characterization of a novel retinal protein, ANKRD33, and its interacting partner HPCAL-1
Creators: name: Rostamirad, Shabnam
Publisher: name: University of British Columbia
Year: 2010

description: The outer segment is a specialized region of rod and cone photoreceptor cells located in vertebrate retina. It features stacks of membranous discs containing visual pigment molecules, and the membranous structures undergo continuous renewal process. In order to better understand the cellular mechanisms in the outer segment, Kwok et al. (2008) used tandem mass spectrometry on bovine rod outer segment preparations, and identified many proteins of unknown function, one of which was ankyrin repeat domain 33 (ankrd33). Ankrd33 belongs to the ankyrin repeat protein class, which has been described to be involved in a variety of functions, such as cell-cell signalling and cytoskeleton structure. However, the function and localization of Ankrd33 have not been previously investigated. In this project, ankrd33 was cloned from bovine retinal cDNA and RT-PCR experiments showed a retina specific gene expression of this protein. In addition, monoclonal antibodies were raised against N and C-termini of ankrd33. These antibodies were used to localize the protein in retina. In addition, they were used to identify the interacting partners of ankrd33 in photoreceptors. Ankrd33 was found to be exclusively expressed in the outer segments of photoreceptor cells and co-immunoprecipitation studies identified hippocalcin like 1 protein (HPCAL-1) as one of the interacting partners. HPCAL-1 belongs to the family of proteins called neuronal calcium sensors (NCS) which are EF-hand containing Ca2+-binding proteins and expressed in different neuronal cells. These proteins are involved in calcium modulation of numerous cellular activities based on the cell type and their interacting partners. As a first step in identifying the possible cellular pathways that ankrd33 and HPCAL-1 might be involved in, monoclonal antibodies were produced against the full length of HPCAL-1 and were used for immunofluorescence studies and in vitro confirmation of the interaction between the two proteins. Immunofluorescence studies showed labelling of ankr33 and HPCAL-1 in rod and cone outer segment with cone outer segment having a stronger signal. These results showed that ankrd33 and HPCAL-1 are both highly expressed in the cone outer segment and these proteins may be involved in calcium dependent-cone specific pathways.
Experimental and Constitutive Investigation of the Thermo-Hydro-Mechanical Behavior of Shales: A Case Study of the Colorado Clay Shale
Creators: name: Mohamadighanatghestani, Morteza
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Engineering--Civil
subject: Experimental
subject: Constitutive
subject: Thermo-Hydro-Mechanical
subject: Shale

description: Shales play a significant role in the safe and economic design of steam injection oil recovery projects in Alberta, Canada, mainly as a result of their special thermo-hydro-mechanical properties. The present study aims at characterizing the thermo-mechanical strength and deformation characteristics of Colorado group shales in Alberta. As such, an extensive set of triaxial laboratory experiments is conducted in the present study, with the observed constitutive features subsequently formulated within the framework of the theory of plasticity. A large variety of laboratory tests including triaxial compression and triaxial constant mean effective stress tests are performed on Colorado shale samples. Results of triaxial compression tests at various temperatures and pressures show that the tested shale initially decreased in volume and strain-hardened until reaching a peak deviatoric stress. Thereafter, strain-softening ensued to ultimately bring the deviatoric stress to a nearly constant value. Failure of all samples was brittle with the formation of a clearly defined shear plane that was shown to be smooth. The post-peak deformations of the sheared samples were characterized by a constant-rate dilation being governed by the orientation of the shear planes. The experimental results also show that the Young's modulus of the tested shale reduced with temperature following a logarithmic relationship. The nonlinear peak and post-peak strength envelopes were described using a nonlinear temperature-dependent failure criterion which for mean stresses greater than 1 MPa, was suitably approximated by the Mohr-Coulomb failure criterion. Based on the observed features in the lab experiments, new constitutive mechanisms were introduced into an advanced multi-yield-surface thermo-elastoplastic model. Of particular interest, the evolution of post-peak friction angle with degradation of interparticle bonding as a result of plastic strain development was modeled. A coupled thermodynamically admissible volumetric thermoelastic rule was proposed in order to describe the thermal variability of elastic properties. A generic thermoplastic formulation for describing the shrinkage of the yield limit at elevated temperatures was developed. Numerical simulations using the proposed mechanisms show the improved predictive capabilities of the reference model, not only in the case of the Colorado shale, but also for experimental observations on other clays/shales in the literature.
Qutrit squeezing via semiclassical evolution
Creators: name: Klimov, Andrei B.
name: Dinani, Hossein Tavakoli
name: Medendorp, Zachari E. D.
name: de Guise, Hubert
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We introduce a concept of squeezing in collective qutrit systems through a geometrical picture connected to the deformation of the isotropic fluctuations of su(3) operators when evaluated in a coherent state. This kind of squeezing can be generated by Hamiltonians non-linear in the generators of su(3) algebra. A simple model of such a non-linear evolution is analyzed in terms of semiclassical evolution of the SU(3) Wigner function.
title: Effects of the Dental Hygiene Curriculum on Student Creativity
Creators: name: Martin, Linda Kathryn
Publisher: name: Old Dominion University Libraries
Year: 1981

description: This investigation examined the influence of the dental hygiene curriculum on student creativity throughout the two years of dental hygiene study. A secondary purpose was to determine if various accredited dental hygiene programs differentially affect creativity in students. Torrance Tests of Creative Thinking was used to measure creativity in students from three dental hygiene programs in Virginia. Data were organized according to a 3 X 4 factorial research design, using dental hygiene programs and academic semester levels as attribute independent variables. Fluency, Flexibility, Originality and Total scores of the Torrance Tests of Creative Thinking were the dependent variables.

Two-way analysis of variance yielded significant differences between semester levels in Fluency, Flexibility and Originality scores. Differences in Flexibility and Originality scores occurred at all three programs. No significant differences were found on Total scores or between the three programs, p < .01. No interaction effects among semester levels and dental hygiene programs were revealed, p < .01.
Relationships Between Core Self-evaluation, Perception of Group Potency, and Job Performance: The Critical Role of Individual Cultural Orientations
Creators: name: Xiu, Luyao
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Industrial
subject: Evaluations
subject: Job performance
subject: Culture orientations

description: Core self-evaluation (CSE), and perception of group potency (PGP) have been repeatedly shown to be important individual difference variables for performance across a range of contexts. However, there is little attention given to the possibility that these relations may be moderated by individual cultural orientations. In the current study, I addressed this gap by adding two individual cultural orientations: (1) individualism and (2) collectivism, and examining their influences on relationships involving CSE, PGP, and job performance. Specifically, I developed the argument that CSE and PGP should be valid predictors of an employee’s job performance. Furthermore, CSE and PGP are most relevant to job performance when the employee is high on either individualism (former) or collectivism (latter). Using a field sample of 167 Chinese employees, I found empirical support for these propositions. Results indicated that CSE as an internal evaluation was positively related to an employee’s job performance, but this evaluation was more predictive of job performance when the employee was individualistic. PGP as an external evaluation was positively related to an employee's job performance, however, this evaluation was more predictive of job performance when the employee was collectivistic. Implications for maximizing the prediction of job performance with CSE and PGP were discussed.
Multiple outflows from the luminous YSO IRAS 07422-2001
Creators: name: Varricatt, Watson P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The luminous Young Stellar Object (YSO) IRAS 07422-2001 is studied in the infrared. We discover star forming activity in embedded clusters located in a cloud detected at mid-IR wavelengths in emission. Multiple outflows are discovered from these clusters in the H_2 ro-vibrational line at 2.122 micron. We detect at least six outflows from the cluster associated with the IRAS source and another outflow from a source located in a cluster detected ~2.7 arcmin NE of the IRAS source. Additional star formation is taking place in two other cluster candidates within the cloud. Three of the YSOs in the cluster associated with the IRAS source are detected at 11.2 micron at an angular resolution of ~0.8 arcsec. We have a tentative detection of a circumstellar disk in this cluster, seen as an extinction lane in the J and H-band images. The spectral energy distributions (SEDs) of the dominant YSOs in the cluster associated with the IRAS source and in the NE cluster are studied using radiative transfer models and the properties of the YSOs are estimated. The YSO associated with the IRAS source is probably in a very early Class I stage of formation. The source identified as the dominant YSO in the NE cluster appears to be older than the dominant YSO in the cluster associated with the IRAS source, but its observed flux seems to be contaminated by extra emission, which suggests the presence of a young source contributing to the SED at far-IR wavelengths. The star formation observed in the field of IRAS 07422-2001 supports the idea of hierarchical formation of massive star clusters and the growth of massive young stellar objects near the centres of multiple sub-clusters in a star forming clump through competitive accretion.
description: 12 pages, 10 figures, accepted for publication in Astronomy and Astrophysics
Valuative dimension, constructive points of view
Creators: name: Neuwirth, Stefan
name: Lombardi, Henri
name: Yengui, Ihsen
Publisher: name: arXiv
Year: 2023
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics

description: There are several classical characterisations of the valuative dimension of a commutative ring. Constructive versions of this dimension have been given and proven to be equivalent to the classical notion within classical mathematics, and they can be used for the usual examples of commutative rings. To the contrary of the classical versions, the constructive versions have a clear computational content. This paper investigates the computational relationship between three possible constructive definitions of the valuative dimension of a commutative ring. In doing so, it proves these constructive versions to be equivalent within constructive mathematics.
Biaxial nematic order in fundamental measure theory
Creators: name: Moumane, Anouar El
name: Vrugt, Michael te
name: Löwen, Hartmut
name: Wittmann, René
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Liquid crystals consisting of biaxial particles can exhibit a much richer phase behavior than their uniaxial counterparts. Usually, one has to rely on simulation results to understand the phase diagram of these systems, since very few analytical results exist. In this work, we apply fundamental measure theory, which allows us to derive free energy functionals for hard particles from first principles and with high accuracy, to systems of hard cylinders, cones and spherotriangles. We provide a general recipe for incorporating biaxial liquid crystal order parameters into fundamental measure theory and use this framework to obtain the phase boundaries for the emergence of orientational order in the considered systems. Our results provide insights into the phase behavior of biaxial nematic liquid crystals and, in particular, into methods for their analytical investigation.
description: the final version [v3] corrects a few typos in the previous [v2] and published versions: in Eqs. (6) and (25); after Eq. (A7); in Eqs. (B13) and (B14); before and in Eq. (B16); in Eqs. (B19) and (B20)
The Role of Personality Correlates and Threat Perception in Attitudes Toward Sex Education
Creators: name: Gusarova, Inga
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Educational Psychology
subject: Education--Social Sciences
subject: Psychology--Social
subject: sex education
subject: attitudes
subject: moral foundations
subject: regulatory focus
subject: threat
subject: intervention
subject: regression
subject: mediation

description: This study investigated the role of moral foundations, regulatory focus, and threat perception in attitudes toward sex education using a crowd-sourced sample of 473 participants (48% women, 52% men; ages 18-80, median age 33.5). Two dimensions of attitudes were identified (58.2% of total variance): Pragmatism, reflecting importance of sex education and its focus on tangible outcomes; and Moral Threat, reflecting perceptions that sex education could be threatening to moral values about sexuality or have harmful moral consequences. Regression analysis showed that combining social conservatism, religious attendance, moral foundations, and regulatory focus accounts for 37% of variance explained in Pragmatism and 44% in Moral Threat (p<.001). Mediation analyses indicated that most effects were direct rather than conveyed through threat perception. Findings showed that regulatory fit is unlikely to improve communication effectiveness of sex education materials, yet individualizing moral foundations and promotion focus represent promising targets for future research.
Current International Trends in Formal Socialization to the Principalship: An Exploratory Multiple Case Study
Creators: name: Kun, David
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Education--Administration
subject: formal socialization
subject: Principalship
subject: principal preparation
subject: leadership role

description: This qualitative multiple case study explored current international trends in the socialization of those aspiring to the school principalship in Canada, Australia, England, Finland, and the United States. The focus was on the formal socialization of principals through preparation programs and addressed the questions of why and how formal socialization is sought, its importance to those programs as well as the governmentally-espoused purposes and structures of those programs. The study provided insight into the formal socialization process in organizations derived from publically accessible on-line documents dealing with principal preparation programs in the above jurisdictions. Findings indicated a trend towards formal, as opposed to informal, socialization into the role of school principal through the provision of preparation programs, which have a formal structure consisting of both internal and external elements. An integrated structural framework representing formal principal preparation programs across the five jurisdictions was presented. Nine recommendations are given for principal preparation programs.
MEMS-based Aided Inertial Navigation System for Small Diameter Pipelines
Creators: name: Sahli, Hussein
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Engineering--Industrial
subject: Engineering--Petroleum
subject: Geotechnology
subject: Inertial Navigation
subject: Pipeline
subject: Pipeline Inspection Gauge
subject: Pigging
subject: Kalman Filter
subject: EKF
subject: PLJ

description: Pipeline Inspection Gauges (pigs) have been used for many years to perform various maintenance operations in oil and gas pipelines. Different pipeline parameters can be inspected during the pig journey. Although, pigs uses many sensors to detect the required pipeline parameters, matching these data with the corresponding pipeline location is considered a very important parameter that needs to be estimated. High-end, tactical-grade Inertial Measurement Units (IMUs) are used in pigging applications to locate the detected problems of pipeline using other sensors, and to reconstruct the trajectories of the pig. These IMUs are accurate; however, their high cost and large sizes limit their use in small diameter pipelines. Calibration would improve the accuracy of the uncertainties that exist in sensor errors behavior. However, intensive calibration would also increase the cost of using IMUs. Therefore, another way to improve the accuracy is used by augmenting IMU with aided sensors (i.e. odometers). This thesis describes a new methodology for the use of low-cost IMUs using an extended Kalman filter (EKF) and the pipeline junctions to increase the navigation parameters’ accuracy and to reduce the total RMS errors even during the unavailability of Above Ground Markers (AGMs). The results of this new proposed method using micro-electro-mechanical systems (MEMS) based IMU revealed that the position RMS errors were reduced by approximately 85% of the standard EKF solution. Therefore, this approach will enable the mapping of small diameter pipelines, which was not possible before.
Quantum approximated cloning-assisted density matrix exponentiation
Creators: name: Rodriguez-Grasa, Pablo
name: Ibarrondo, Ruben
name: Gonzalez-Conde, Javier
name: Ban, Yue
name: Rebentrost, Patrick
name: Sanz, Mikel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Classical information loading is an essential task for many processing quantum algorithms, constituting a cornerstone in the field of quantum machine learning. In particular, the embedding techniques based on Hamiltonian simulation techniques enable the loading of matrices into quantum computers. A representative example of these methods is the Lloyd-Mohseni-Rebentrost protocol, which efficiently implements matrix exponentiation when multiple copies of a quantum state are available. However, this is a quite ideal set up, and in a realistic scenario, the copies are limited and the non-cloning theorem prevents from producing more exact copies in order to increase the accuracy of the protocol. Here, we propose a method to circumvent this limitation by introducing imperfect quantum copies, which significantly improve the performance of the LMR when the eigenvectors are known.
Identification and Characterization of a Novel Tyrosine Phosphatase in Plants
Creators: name: Labandera, Anne Marie Lyse
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Biology
subject: Biochemistry
subject: Plant Biology
subject: FOS: Biological sciences
subject: Protein phosphatase
subject: Structural Biology

description: The study of tyrosine phosphorylation in plants has been largely neglected due to the lack of classic tyrosine kinases and underrepresentation of tyrosine phosphatases compared to humans. However, advanced phosphoproteomics studies have revealed that the abundance of phospho-tyrosine residues in plants parallels human signal transduction. This strongly suggests that in plants tyrosine phosphorylation is as important as in humans, yet we know nothing about the players responsible for these events. The Arabidopsis thaliana Rhizobiale-like phosphatase 2 (AtRLPH2) is a novel protein phosphatase not found in mammals which, according to bioinformatics analysis, clusters with the serine/threonine-specific phospho-protein phosphatase (PPP) group. In the present work, it is shown that recombinant AtRLPH2 surprisingly behaves like a tyrosine phosphatase in vitro by dephosphorylating phospho-tyrosine peptides and having essentially no activity towards phospho-serine/threonine residues. Furthermore, the endogenous AtRLPH2 from Arabidopsis thaliana was also shown to preferentially dephosphorylate tyrosine phosphorylated peptides and protein. This work shows for the first time that a member of the plant PPP family of phosphatases has the capability to dedicate its activity solely toward phospho-tyrosine. In order to understand the novel substrate specificity of AtRLPH2 its crystal structure was elucidated, providing detailed mechanistic insight into its mode of function and characteristics of its potential substrates. AtRLPH2 possesses a basic pocket next to the active site which makes it imperative for the substrate to possess a phospho-threonine/serine two amino acids upstream the phospho-tyrosine. To gain a better understanding of AtRLPH2 significance and targets, a phosphoproteomics study was undertaken to compare phospho-tyrosine peptides from wild type and atrlph2 knockout plant lines. In summary, the atypical tyrosine phosphatase AtRLPH2 was characterized by a multidisciplinary approach involving biochemistry, cell biology, phosphoproteomics and structural biology.
Signature of Phase Transitions in the Disordered Quantum Spin Hall State From the Entanglement Spectrum
Creators: name: Gilbert, Matthew J.
name: Bernevig, B. Andrei
name: Hughes, Taylor L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Of the available classes of insulators which have been shown to contain topologically non-trivial properties one of the most important is class AII, which contains systems that possess time-reversal symmetry $T$ with $T^2=-1.$ This class has been the subject of significant attention as it encompasses non-trivial Z$_2$ topological insulators such as the quantum spin Hall (QSH) state and the 3D strong topological insulator. One of the defining properties of this system is the robustness of the state under the addition of disorder that preserves $T.$ In this letter, we explore the phase diagram of the disordered QSH state as a function of disorder strength and chemical potential by examining the entanglement spectrum for disordered class AII symplectic systems. As for the case of the $T$ breaking Chern insulator we show that there is a correspondence between the level-spacing statistics of the Hamiltonian and that of the level spacing statistics of the entanglement spectrum. We observe a feature in the statistics of the entanglement spectrum that aids the identification of delocalized states and consequently critical energies across which phase transitions occur.
description: 5 pages, 4 figures
Hyaluronan binding by CD44 on T cells
Creators: name: Maeshima, Nina Miharu
Publisher: name: University of British Columbia
Year: 2010

description: CD44 is a transmembrane protein that binds to hyaluronan, a component of the extracellular and pericellular matrices. Hyaluronan supports cell migration and proliferation during embryonic development, wound repair, as well as tumourigenesis. Hyaluronan binding to CD44 can also regulate leukocyte migration and adhesion. On naïve CD4 and CD8 T cells, CD44 is in its inactive form, but it is upregulated and induced to bind hyaluronan upon T cell activation. High CD44 expression is used as a marker for effector and memory T cells, and recent evidence has implicated CD44 in the formation of CD4 but not CD8 memory T cells. However, it is not clear if effector T cells bind hyaluronan and unknown if memory T cells bind hyaluronan. Hyaluronan binding has additionally been shown to mark a subset of the most suppressive regulatory CD4 T cells and here hyaluronan promotes FoxP3 expression, but the significance of why only a subset of these cells binds hyaluronan is unclear. Thus, the current understanding of when and on which cells hyaluronan binding is induced during an immune response, as well as its function on T cells, is incomplete. The first aim of this work was thus to determine when CD4 and CD8 T cells bind hyaluronan. T cells were activated in vitro with PMA and ionomycin and in vivo during an immune response to Listeria monocytogenes. Hyaluronan binding was assessed over a time course and found to occur on the mostly highly proliferative, activated T cells, as well as on a subset of memory T cells. The second aim of this work was to determine the consequences of binding hyaluronan. Hyaluronan binding on activated T cells was found to enhance their adhesion to fibronectin and inhibited both chemokinesis and chemokine-induced migration. Furthermore, hyaluronan induced chemokine-independent polarization of CD44, but inhibited CD44 co-polarization with phosphorylated ERM proteins. Together, the data suggests that hyaluronan binding is induced on highly proliferative T cells and may function as a stop signal for migration.
Autonomous Traffic Control System Using Agent Based Technology
Creators: name: M, Venkatesh.
name: Kumar, K.
name: V, Srinivas.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: The way of analyzing, designing and building of real-time projects has been changed due to the rapid growth of internet, mobile technologies and intelligent applications. Most of these applications are intelligent, tiny and distributed components called as agent. Agent works like it takes the input from numerous real-time sources and gives back the real-time response. In this paper how these agents can be implemented in vehicle traffic management especially in large cities and identifying various challenges when there is a rapid growth of population and vehicles. In this paper our proposal gives a solution for using autonomous or agent based technology. These autonomous or intelligent agents have the capability to observe, act and learn from their past experience. This system uses the knowledge flow of precedent signal or data to identify the incoming flow of forthcoming signal. Our architecture involves the video analysis and exploration using some Intelligence learning algorithm to estimate and identify the flow of traffic.
description: This paper has been withdrawn by the authors. Total Pages 8 and 3 Figures, Author wishes to withdraw for some major changes and corrections
A Component-wise EM Algorithm for Mixtures
Creators: name: Celeux, Gilles
name: Chrétien, Stéphane
name: Forbes, Florence
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: In some situations, EM algorithm shows slow convergence problems. One possible reason is that standard procedures update the parameters simultaneously. In this paper we focus on finite mixture estimation. In this framework, we propose a component-wise EM, which updates the parameters sequentially. We give an interpretation of this procedure as a proximal point algorithm and use it to prove the convergence. Illustrative numerical experiments show how our algorithm compares to EM and a version of the SAGE algorithm.