cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Complex networks embedded in space: Dimension and scaling relations between mass, topological distance and Euclidean distance
Creators: name: Emmerich, Thorsten
name: Bunde, Armin
name: Havlin, Shlomo
name: Guanlian, Li
name: Daqing, Li
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Many real networks are embedded in space, where in some of them the links length decay as a power law distribution with distance. Indications that such systems can be characterized by the concept of dimension were found recently. Here, we present further support for this claim, based on extensive numerical simulations for model networks embedded on lattices of dimensions $d_e=1$ and $d_e=2$. We evaluate the dimension $d$ from the power law scaling of (a) the mass of the network with the Euclidean radius $r$ and (b) the probability of return to the origin with the distance $r$ travelled by the random walker. Both approaches yield the same dimension. For networks with $δ< d_e$, $d$ is infinity, while for $δ> 2d_e$, $d$ obtains the value of the embedding dimension $d_e$. In the intermediate regime of interest $d_e \leq δ< 2 d_e$, our numerical results suggest that $d$ decreases continously from $d = \infty$ to $d_e$, with $d - d_e \sim (δ- d_e)^{-1}$ for $δ$ close to $d_e$. Finally, we discuss the scaling of the mass $M$ and the Euclidean distance $r$ with the topological distance $\ell$. Our results suggest that in the intermediate regime $d_e \leq δ< 2 d_e$, $M(\ell)$ and $r(\ell)$ do not increase with $\ell$ as a power law but with a stretched exponential, $M(\ell) \sim \exp [A \ell^{δ' (2 - δ')}]$ and $r(\ell) \sim \exp [B \ell^{δ' (2 - δ')}]$, where $δ' = δ/d_e$. The parameters $A$ and $B$ are related to $d$ by $d = A/B$, such that $M(\ell) \sim r(\ell)^d$. For $δ< d_e$, $M$ increases exponentially with $\ell$, as known for $δ=0$, while $r$ is constant and independent of $\ell$. For $δ\geq 2d_e$, we find power law scaling, $M(\ell) \sim \ell^{d_\ell}$ and $r(\ell) \sim \ell^{1/d_{min}}$, with $d_\ell \cdot d_{min} = d$.
description: 17 pages, 11 figures
Compartmental Hepatitis B Virus (HBV) Evolution, Replication and Infectivity in vivo and ex vivo
Creators: name: Gao, Shan
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Biology--Molecular
subject: Virology
subject: Biophysics--Medical
subject: Hepatitis B Virus (HBV)
subject: Chronic Hepatitis B (CHB)
subject: mutation(s)
subject: nucleos/tide analogue (NA)
subject: Drug resistance
subject: lymphotropism
subject: quasispecies (QS)
subject: peripheral blood mononuclear cell (PBMC)
subject: acute on chronic liver failure (ACLF)

description: Hepatitis B Virus (HBV) is classically considered a hepatotropic virus, however, the presence of different HBV genomic molecules in lymphoid cells and tissues support its lymphotropic nature. Our previous studies showed that HBV evolved in a compartment- and disease phase-specific fashion. However, the effect of nucleos/tide analogue (NA) therapy on HBV evolution and replication in different compartments (i.e., liver, plasma and peripheral blood mononuclear cell (PBMC)) is unknown, as well as the replicative competence and infectious capacity of PBMC-derived HBV. We hypothesize that HBV replicating in lymphoid cells is infectious, and the HBV evolves in PBMC and/or plasma in chronic hepatitis B (CHB) patients under the influence of NA therapy or host immune pressure (i.e., fulminant hepatitis B). The study on HBV replication and genetic evolution in PBMC, liver and plasma of CHB patients under NA therapy revealed the HBV evolution varied between three compartments both before and after treatment. NA had little effect on HBV cccDNA level and persistence of mRNA in PBMC. The study on HBV genetic features in CHB carriers with acute-on-chronic liver failure (ACLF) revealed the frequent immune escape mutations with clusters of surface gene variants possibly associated with development of fulminant hepatitis B. Mitogen stimulation in PBMC of CHB patients revealed presence of replicating HBV, which can be upregulated in PBMC and exhibited infectious capacity to HepaRG cells in vitro. In summary, our data suggests potent NAs have little effect on HBV cccDNA in liver and PBMC, which highlights the need for continued suppressive antiviral therapy. The HBV evolution varied between different compartments in CHB patients under NA therapy. Distinct variants in HBV surface gene were found to be associated with HBV fulminant hepatitis. Moreover, HBV residing in lymphoid cells is increased after mitogen stimulation of PBMC and infectious to a hepatocyte cell line. The study furthers our understanding of HBV lymphotropism, role on viral persistence and the pathogenesis of chronic hepatitis B.
Mathematical flexibility
Creators: name: Matthew, Giammarino
Publisher: name: University of British Columbia
Year: 2010

description: Mathematicians, mathematics researchers and educators are now arguing that an essential aim of mathematics education should be to equip students so they can adapt to new mathematical situations and use mathematics to solve authentic problems that arise in day-to-day life. This, mathematical flexibility – defined here as adaptation when dealing with number, magnitude or form – is important to mathematics researchers and educators, but the classroom context may not always promote flexibility. Building across converging lines of cognitive, social-psychological, and neuro-biological research, this study investigated whether mathematical flexibility might be profitably understood as a network of functional components. This study was designed to: 1) investigate the functional components of mathematical flexibility and contrast them with functional components of mathematical competence; and 2) evaluate the effectiveness of a network approach for understanding the relationship between environmental and individual components of mathematical flexibility. Results indicated that flexibility appeared to be associated with network activity which co-activated two or more other networks, while competence appeared to be characterized by a series of network activations which occurred individually and in sequence. Further, results suggested that the case study approach used here to identify network activity could reveal meaningful dynamics in network activity, and these dynamics could be related to flexible or competent performance. Implications for researchers and practitioners are identified in the discussion. However, because this study was constrained by the ways in which flexibility was conceptualized and features of the methodology, limitations and directions for future research are also suggested.
Stochastic quasi-geostrophic equation
Creators: name: Röckner, Michael
name: Zhu, Rongchan
name: Zhu, Xiangchan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: In this note we study the 2d stochastic quasi-geostrophic equation in $\mathbb{T}^2$ for general parameter $α\in (0,1)$ and multiplicative noise. We prove the existence of martingale solutions and pathwise uniqueness under some condition in the general case, i.e. for all $α\in (0,1)$. In the subcritical case $α>1/2$, we prove existence and uniqueness of (probabilistically) strong solutions and construct a Markov family of solutions. In particular, it is uniquely ergodic for $α>2/3$ provided the noise is non-degenerate. In this case, the convergence to the (unique) invariant measure is exponentially fast. In the general case, we prove the existence of Markov selections.
Mapping Anisotropy of the Proximal Femur for Improved Image-Based Finite Element Analysis
Creators: name: Enns-Bray, William
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Biomedical
subject: Femur
subject: Finite Element
subject: Anisotropy
subject: Computed Tomography
subject: Biomechanics

description: Finite element (FE) models of bone derived from clinical quantitative computed tomography (QCT) rely on realistic material properties to accurately predict patient-specific bone strength in vivo. QCT cannot resolve microarchitecture, therefore QCT-based FE models lack the directionality apparent within trabecular bone. Maps of anisotropy were constructed from high-resolution peripheral QCT (HR-pQCT) images of seven femur specimens using a „direct mechanics‟ method to measure local anisotropy. The resulting directionality reflected all the major structural patterns visible within the microarchitecture of the proximal femur. Principal stiffness directions were interpolated into QCT-based femur models, and whole bone stiffness was calculated for orthotropic and isotropic models in a sideways fall configuration. Comparing model stiffness to experimental data revealed no difference in correlation (R2ORTH = 0.780, R2ISO = 0.788). These results suggest that the variability in stiffness explained by anisotropy at the microarchitecture level does not scale to whole bone models for this specific loading configuration.
ИСПОЛЬЗОВАНИЕ ЦИФРОВЫХ ОБРАЗОВАТЕЛЬНЫХ СРЕДСТВ В ОБУЧЕНИИ РУССКОМУ ЯЗЫКУ
Creators: name: Турдалиева Гулхаё Наманганский государственный педагогический институт «Русский язык и литература», 1-курс магистратуры
Publisher: name: Zenodo
Year: 2025

description: Данная статья посвящена исследованию эффективности применения цифровых образовательных средств в процессе обучения русскому языку. На основе анализа современных научных источников рассматриваются ключевые тенденции цифровизации языкового образования, выявляются наиболее продуктивные цифровые инструменты и методики их интеграции в учебный процесс. Результаты исследования демонстрируют позитивное влияние цифровых технологий на мотивацию учащихся, развитие коммуникативных навыков и повышение качества языкового образования в целом. Выявлены проблемные аспекты внедрения цифровых образовательных средств и предложены рекомендации по их эффективному использованию в практике преподавания русского языка.

Ключевые слова: русский язык, цифровые образовательные средства, языковое образование, электронное обучение, цифровая грамотность, мультимедийные технологии, методика преподавания
On the Spectral Efficiency and Energy Efficiency of the Cloud Radio Access Network Architecture
Creators: name: Ghods, Fatemeh
Publisher: name: Graduate Studies
Year: 2017
Subjects: Engineering--Electronics and Electrical

description: Providing support for high consumer data traffic and maintaining high system efficiency are key requirements of the fifth generation (5G) wireless network design. The high costs associated with the widespread installation of the network base stations (BSs) and spectrum acquisition makes them impractical for accommodating the high traffic load. What is more, the continuous operation of the BSs also has a significant consequence in causing elevated levels of carbon dioxide (CO2) emissions. To meet the key requirements of high spectral efficiency (SE), maintain low levels of cost, and high energy efficiency (EE), cloud-radio access network (cloud-RAN) has been proposed as a promising architectural solution. Moreover, new waveforms (e.g., fillter bank multicarrier (FBMC)) have been suggested as alternatives to the traditional orthogonal frequency division multiplexing (OFDM) to satisfy the astounding growth in the traffic load. This thesis aims to enhance capacity and reduce the network power consumption. First, the effect of cooperative transmission in combination with the cloud-RAN architecture on network-level achievable data rate along with EE and SE is studied. Mathematical tools from stochastic geometry are utilized, to analytically characterize SE and EE. Moreover, the ability to increase the power savings is investigated by incorporating a tunable downlink distance-based fractional power control (D-FPC) mechanism into the cloud-RAN architecture. Using tools from stochastic geometry, the network-level coverage probability and EE are examined. Second, the throughput reliability/SE/EE of a cloud-RAN incorporating the D-FPC mechanism along with cooperative joint transmissions is analyzed by adopting a stochastic geometry-based approach. Lastly, taking into account feasibility of two-fold data rate improvement within FBMC waveform, this thesis studies and experimentally examines FBMC waveform to evaluate this new waveform and compares it with OFDM waveform. Moreover, the linearity requirements of power amplifier (PA) using memoryless and memory polynomial digital predistortion (DPD) techniques are also examined through a very nonlinear PA (Doherty) and a moderately linear PA (Class AB) to explore the behavior of OFDM and FBMC signals. Overall, this thesis provides critical insights to the cloud-RAN system designer for selecting appropriate architectural approach and waveform to achieve desired performance regarding energy, spectral, and PA efficiency.
Developing a Usable API for Multi-Surface Systems
Creators: name: Burns, Christopher
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Computer Science
subject: Multi-Surface

description: A multi-surface system brings together a variety of different devices – such as a tabletop, tablet, mobile phone and wall display – into a single cohesive system. This integration allows users to take advantage of the unique capabilities of each device in ways that would not be possible using those devices separately. But creating usable interactions for moving content and control between all these devices has proven a difficult problem. Spatially augmented gestures, which are gestures which incorporate the spatial layout of the room as well as the people and devices in it, might provide a solution to this problem. Building such gestures into a multi-surface systems is difficult and tedious to develop. It represents too large an investment of time and effort for developers to bear. To decrease the cost of developing such systems, we have created an API – called MSE-API – that allows developers to quickly and efficiently add gestural interactions to multi-surface applications. In developing such an API we focused especially on making it usable for developers. Specifically we insured the API was learnable and discoverable for inexperienced developers but still an efficient tool for more experienced developers. This thesis presents the requirements and structure of an API for developing multi-surface systems with spatially augmented gestures. The result of two case studies, in which the API was used to develop real world multi-surface applications, are also presented.
High temperature oxygen NEXAFS valence band spectra and conductivity of LaFe3/4Ni1/4O3 from 300 K to 773 K
Creators: name: Braun, Artur
name: Erat, Selma
name: Ariffin, Ahmad K.
name: Manzke, Recardo
name: Wadati, Hiroki
name: Graule, Thomas
name: Gauckler, Ludwig J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: LaFe3/4Ni1/4O3 was subjected to oxygen near edge x-ray absorption fine structure (NEXAFS) spectroscopy for 300 K < T < 773 K. The spectra show in the pre-edge a small hole doped peak originating from Ni substitution. The relative spectral weight of this transition to the weight of the hybridized O(2p) - Fe(3d) transitions scales with T and has a maximum at around 600 K. The characteristic energies of the thermal activated spectral intensity and conductivity suggest that the concentration of charge transferred electrons from O(2p) to Ni(3d) increases and that the pre-edges account in part for the polaron activated transport.
Mathieu Moonshine and symmetries of K3 sigma models
Creators: name: Volpato, Roberto
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A recent observation by Eguchi, Ooguri and Tachikawa (EOT) suggests a relationship between the largest Mathieu group M24 and the elliptic genus of K3. This correspondence would be naturally explained by the existence of a non-linear sigma-model on K3 with the Mathieu group as its group of symmetries. However, all possible symmetry groups of K3 models have been recently classified and none of them contains M24. We review the evidence in favour of the EOT conjecture and discuss the open problems in its physical interpretation.
description: 7 pages. Proceedings of the "XVII European Workshop on String Theory 2011", Padova, Italy, 5-9 September 2011
Periclimenes longicaudatus Stimpson 1860
Creators: name: Almeida, Alexandre Oliveira De
name: Guerrazzi, Maria Cec Lia
name: Coelho, Petr Ȏ Nio Alves
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Palaemonidae
Periclimenes
Periclimenes longicaudatus

description: Periclimenes longicaudatus (Stimpson, 1860)
Material examined (N=89). 15m, 4f, 12/VI/2004, St. 0 1 (MZUESC #652); 2m, 10f, 26/IX/2004, St. 0 1 (MZUESC #734); 5m, 6f, 18/12/2004, St. 0 1 (MZUESC #735).
Distribution. Western Atlantic – from North Carolina to southwestern Florida, West Indies to Brazil (from Pará to São Paulo) (Williams 1984; Ramos-Porto & Coelho 1998).
Ecological notes. From shallow waters to 72 m (Ramos-Porto & Coelho 1990).
Previous records in Bahia. Gomes Corrêa (1972), Coelho & Ramos (1972) (as Periclimenes sp. B).
description: Published as part of Almeida, Alexandre Oliveira De, Guerrazzi, Maria Cec Lia & Coelho, Petr Ȏ Nio Alves, 2007, Stomatopod and decapod crustaceans from Camamu Bay, state of Bahia, Brazil, pp. 1-45 in Zootaxa 1553 on page 11, DOI: 10.5281/zenodo.178168
Non-Canonical Signaling by N-methyl-D-aspartate Receptors to Pannexin-1 in Ischemia
Creators: name: Weilinger, Nicholas Leopold
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Neuroscience
subject: NMDA receptor
subject: Pannexin-1
subject: Ischemia
subject: excitotoxicity
subject: synaptic physiology

description: The N-methyl D-aspartate receptor (NMDAR) is an excitatory ligand-gated ion channel that is integral for neurological function because of its roles in synaptic plasticity and in cell survival. Until a decade ago, the NMDAR was also thought to be the key mediator of excitotoxicity during ischemia; a notion that was challenged when clinical trials of NMDAR blockers for the treatment of ischemic stroke were deemed either ineffective or the drugs not clinically tolerated. New evidence has emerged suggesting that Pannexin ion channels are modulated by NMDARs and may be critical in perpetuating ischemic cell death. This provides a novel avenue for stroke research and intervention, and may reconcile the lack of clinical efficacy for NMDAR antagonism. This thesis explores the contributions of pannexin-1 (Panx1) and NMDA receptors in models of ischemia/hypoxia and aims to understand their role in ischemic excitotoxicity. My over-arching hypothesis is that co-activation of NMDA receptors and Panx1 is important for pathological and physiological signaling. Here I show that NMDARs are key activators of Panx1, which occurs through an unexpected mechanism that does not rely on ion movement through the NMDAR pore. This non-canonical mechanism of NMDAR signaling is critical for neuronal death during O2 / glucose deprivation (OGD) and during overstimulation of NMDA receptors. Critical elements of non-canonical NMDAR function were identified, including Src family kinases and Panx1, which exist in a signaling complex. Finally, I show that non-canonical activation of NMDARs can recruit Panx1 channels and induce long-term depression of excitatory synapses in the hippocampus. In conclusion, the work of this thesis has identified a novel transduction pathway that has broad reaching implications for our understanding of ischemia and synaptic physiology.
Quantum Kepler problem for spin 1/2 particle in spaces on constant curvature. I. Pauli theory
Creators: name: Ovsiyuk, E. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: G.1
subject: 35

description: Transition to a nonrelativistic Pauli equation in Riemann space of constant positive curvature for a Dirac particle in presence of the Coulomb field is performed in the system of radial equations, exact solutions are constructed in terms of Hein functions, the energy spectrum is derived. The same is done for the Kepler quantum problem in hyperbolic Lobachevsky space, solutions are constructed in terms of Hein functions, the energy spectrum is obtained.
description: 17 pages
Modeling dependent gene expression
Creators: name: Telesca, Donatello
name: Müller, Peter
name: Parmigiani, Giovanni
name: Freedman, Ralph S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Applications (stat.AP)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: In this paper we propose a Bayesian approach for inference about dependence of high throughput gene expression. Our goals are to use prior knowledge about pathways to anchor inference about dependence among genes; to account for this dependence while making inferences about differences in mean expression across phenotypes; and to explore differences in the dependence itself across phenotypes. Useful features of the proposed approach are a model-based parsimonious representation of expression as an ordinal outcome, a novel and flexible representation of prior information on the nature of dependencies, and the use of a coherent probability model over both the structure and strength of the dependencies of interest. We evaluate our approach through simulations and in the analysis of data on expression of genes in the Complement and Coagulation Cascade pathway in ovarian cancer.
description: Published in at http://dx.doi.org/10.1214/11-AOAS525 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Nanoscale phase separation in the iron chalcogenide superconductor K0.8Fe1.6Se2 as seen via scanning nanofocused x-ray diffraction
Creators: name: Ricci, A.
name: Poccia, N.
name: Campi, G.
name: Joseph, B.
name: Arrighetti, G.
name: Barba, L.
name: Reynolds, M.
name: Burghammer, M.
name: Takeya, H.
name: Mizuguchi, Y.
name: Takano, Y.
name: Colapietro, M.
name: Saini, N. L.
name: Bianconi, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Advanced synchrotron radiation focusing down to a size of 300 nm has been used to visualize nanoscale phase separation in the K0.8Fe1.6Se2 superconducting system using scanning nanofocus single-crystal X-ray diffraction. The results show an intrinsic phase separation in K0.8Fe1.6Se2 single crystals at T< 520 K, revealing coexistence of i) a magnetic phase characterized by an expanded lattice with superstructures due to Fe vacancy ordering and ii) a non-magnetic phase with an in-plane compressed lattice. The spatial distribution of the two phases at 300 K shows a frustrated or arrested nature of the phase separation. The space-resolved imaging of the phase separation permitted us to provide a direct evidence of nanophase domains smaller than 300 nm and different micrometer-sized regions with percolating magnetic or nonmagnetic domains forming a multiscale complex network of the two phases.
description: 5 pages, 4 figures
Consequences of Maternal Loss in a Long-lived Mammal, the Red Deer (Cervus elaphus)
Creators: name: Andres, Daniel
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: maternal care
subject: sex differences
subject: orphaning
subject: philopatry
subject: emigration
subject: red deer
subject: Cervus elaphus
subject: social development
subject: maternal effects

description: In many mammals, mothers closely associate with offspring both before and after weaning. Social bonds during infancy and adulthood have consequences for offspring fitness and sociality, and this has been the subject of some research, especially in the field of primatology. However, few studies have assessed whether mothers influence offspring fitness after the point of weaning. When it comes to sociality, even fewer studies have assessed the role mothers play in influencing offspring social ties and social stability. In this thesis, I investigate these questions using long-term data from a population of red deer(Cervus elaphus). Specifically, I show that in both sexes orphaning reduces prospects of survival even when it occurs after weaning. I further show that orphaning prior to weaning reduces male antler growth but does not affect female primiparity at age 3 years. Finally, I find no evidence that mothers affect offspring sociality in infancy and adolescence.
Differential geometric analysis of radiation-particle interaction
Creators: name: Kwa, Kiam Heong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 78A35, 53Z05, 70K20, 70K28, 70K70

description: On the basis of the Lorentz equations of motion, the orbit of a charge driven by a generic E.M. field with planar symmetry is formulated and analyzed within the framework of a Lorentzian geometry with a curvature whose order of magnitude is parametrized by the radiation intensity and frequency. This reformulation leads to (i) a demonstration of the integrability of the particle motion in a plane-wave field as a result of the vanishing of the curvature, (ii) a manifestation of the parametric dependence of the dynamical response of the particle orbit to the E.M. field on the impulse factor in terms of local stability and the occurrence of parametric resonance and (iii) a mathematically precise meaning to the ponderomotive oscillation center of the charge executing oscillatory motion in a sufficiently low impulsive E.M. field, which is subsequently used to raise (iv) a discussion of the domain of applicability of the ponderomotive approximation.
description: 25 pages, 1 figure
Prion protein distribution and function in the Enteric Nervous System of the Gastrointestinal Tract of Mice
Creators: name: Alvarez Veronesi, Ana Laura
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Animal Physiology
subject: Enteric nervous system
subject: Prion
subject: Ussing chamber
subject: Ion transport
subject: Secretion

description: The prion protein (PrPC) is a membrane bound copper binding protein widely expressed throughout the body. Although the pathophysiological role of PrPC in prion diseases has been well established, its physiological function remains poorly understood. This study was designed to characterize the distribution of PrPC in the gastrointestinal tract, more specifically the enteric nervous system (ENS), and to establish a functional role of PrPC in the gut. We have shown that PrPC is expressed in the ENS of mice, both in neurons and enteric glial cells. In addition, Ussing chambers studies showed that PrPC is involved in neuronal and epithelial control of electrolyte transport; PrPC-deficient mice had decreased responses to electric field stimulation, bethanechol, and forskolin, compared to controls. However, this was not due to PrPC’s ability to bind copper. These studies show that PrPC is widely distributed in the ENS and has a physiological role in gastrointestinal function.
Quantifying the typical scale of star formation in the Milky Way spiral arms through their young star clusters
Creators: name: Quintana Isasi, Alexis
name: Negueruela, Ignacio
name: Berlanas, Sara
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Stellar astronomy
subject: Galactic astronomy

description: Star formation is a vital phenomenon in astronomy, yet there are still many unknowns surrounding it because of its complexity. In particular, spiral arms are important sites of star formation, but the spatial scale in which it occurs still needs to be fully quantified. As typical tracers of the spiral arms, young stellar clusters and associations constitute suitable probes towards solving this question. On the one hand, they stay close to their birth environment; on the other hand, it is easier to determine accurate distances for them rather than individual stars. We identify stellar groups within the Galactic spiral arms, that are consistent both in velocity and age, in order to estimate their size and thus the spatial scale of star formation. This requires a reliable determination of their membership, which is possible thanks to the combination of recent photometric, kinematic and spectroscopic data with modern computing tools, allowing us to better define their members and use them as probes. We selected the association Cas OB5 as our first target. Recent investigations have placed its members at distances between 2.5 and 3 kpc, thereby intercepting the Perseus arm. We redefine the membership of Cas OB5 and its surrounding open clusters, especially their brightest and most massive stars, and analyse them. The moderate extinction (A_V = 2-3 mag) of Cas OB5 facilitates its analysis and lays out the foundations to explore more distant and extinguished regions. It is particularly true for the Perseus arm, for which few tracers are known at l > 140 deg, and l between 70 deg and 90 deg where the Perseus arm is thought to be located as far as 4 kpc away. SED fitting and clustering algorithms, complemented with robust spectroscopic analysis, allow us to identify obscured star clusters in this area and determine their size and membership.
Determination of spin Hamiltonian in the Ni$_4$ magnetic molecule
Creators: name: Iida, K.
name: Lee, S. -H.
name: Onimaru, T.
name: Matsubayashi, K.
name: Sato, T. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Magnetic excitations in a Ni$_4$ magnetic molecule were investigated by inelastic neutron scattering and bulk susceptibility ($χ_\text{bulk}$) techniques. The magnetic excitation spectrum obtained from the inelastic neutron scattering experiments exhibits three modes at energy transfers of $\hbarω=0.5$, 1.35, and 1.6 meV. We show that the energy, momentum, and temperature dependences of the inelastic neutron scattering data and $χ_\text{bulk}$ can be well reproduced by an effective spin Hamiltonian consisted of intra-molecule exchange interactions, a single-ionic anisotropy, biquadratic interactions, and Zeeman term. Under a hydrostatic pressure, the bulk magnetization decreases with increasing pressure, which along with the biquadratic term indicates spin-lattice coupling present in this system.
description: 6 pages, 6 figures, and 2 tables
Linearized Auxiliary fields Monte Carlo: efficient sampling of the fermion sign
Creators: name: Sorella, Sandro
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We introduce a method that combines the power of both the lattice Green function Monte Carlo (LGFMC) with the auxiliary field techniques (AFQMC), and allows us to compute exact ground state properties of the Hubbard model for U
description: 5 pages, 3 figures
Holographic order parameter for charge fractionalization
Creators: name: Hartnoll, Sean A.
name: Radicevic, Djordje
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Nonlocal order parameters for deconfinement, such as the entanglement entropy and Wilson loops, depend on spatial surfaces Σ. These observables are given holographically by the area of a certain bulk spatial surface Γ, ending on Σ. At finite charge density it is natural to consider the electric flux through the bulk surface Γ, in addition to its area. We show that this flux provides a refined order parameter that can distinguish `fractionalized' phases, with charged horizons, from what we term `cohesive' phases, with charged matter in the bulk. Fractionalization leads to a volume law for the flux through the surface, the flux for deconfined but cohesive phases is between a boundary and a volume law, while finite density confined phases have vanishing flux through the surface. We suggest two possible field theoretical interpretations for this order parameter. The first is as information extracted from the large N reduced density matrix associated to Σ. The second is as surface operators dual to polarized bulk `D-branes', carrying an electric dipole moment.
description: 1+22 pages. 4 figures
Asymptotics of Maximum Composite Likelihood Estimation for Geostatistical Data
Creators: name: Chua, Nelson Jinn-Yih
Publisher: name: The Australian National University
Year: 2018
Subjects: asymptotic relative efficiency
composite likelihood
exponential covariance
Gaussian spatial processes
geostatistical asymptotics

description: Parameter estimation and inference in a geostatistical model is often made challenging due to the strong dependence between nearby observations. For large sample sizes, maximum likelihood estimation quickly becomes computationally expensive to perform, so other estimation approaches such as maximum composite likelihood estimation have been proposed as alternatives. In this thesis, we investigate the statistical and computational performance of maximum composite likelihood estimation relative to maximum likelihood estimation for the Gaussian exponential covariance model. As the main contribution of this work, we derive and analyse the exact closed-form expressions for the sandwich covariance matrix of various composite likelihoods in one-dimensional space. These new results are found under a hybrid asymptotic framework, which unifies the traditional expanding domain and infill frameworks seen in the geostatistical literature. We then demonstrate the practical implementation of maximum composite likelihood approaches for estimation and inference, as well as perform a data-motivated simulation study of their statistical performance in a two-dimensional setting with irregularly-spaced observations.
Self-consistent solutions of canonical proper self-gravitating quantum systems
Creators: name: Lindesay, James
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Generic self-gravitating quantum solutions that are not critically dependent on the specifics of microscopic interactions are presented. The solutions incorporate curvature effects, are consistent with the universality of gravity, and have appropriate correspondence with Newtonian gravitation. The results are consistent with known experimental results that indicate the maintenance of the quantum coherence of gravitating systems, as expected through the equivalence principle.
description: 13 pages, 7 figures
Printed Voices: Women, Print, and Performance
Creators: name: Copp, Madeleine
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Theater
subject: Comparative
subject: closet drama
subject: theatre
subject: Literature

description: This thesis suggests the limitations of the term ‘closet drama’ when applied to marginalized playwrights from the early modern and modern periods. Using four case studies, two British playwrights from the early modern period, Elizabeth Cary (1585-1639) and Margaret Cavendish (1623-1673), and two Americans from the modern period, Djuna Barnes (1892-1982) and Marita Bonner (1898-1971), I argue that these dramatists used printed play-texts to subvert social restrictions relating to gender, sexuality, class, and race, access new spaces, and reframe and confront traditional narratives. Each of my case studies examines how print served a specific performative and political purpose for individual playwrights in specific socio-historical contexts. My aim is to highlight closet drama’s cultural significance as an alternative method of artistic engagement and encourage canonical acknowledgement of unconventional dramatic work.
Geometric properties of graph layouts optimized for greedy navigation
Creators: name: Lee, Sang Hoon
name: Holme, Petter
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The graph layouts used for complex network studies have been mainly been developed to improve visualization. If we interpret the layouts in metric spaces such as Euclidean ones, however, the embedded spatial information can be a valuable cue for various purposes. In this work, we focus on the navigational properties of spatial graphs. We use an recently user-centric navigation protocol to explore spatial layouts of complex networks that are optimal for navigation. These layouts are generated with a simple simulated annealing optimization technique. We compared these layouts to others targeted at better visualization. We discuss the spatial statistical properties of the optimized layouts for better navigability and its implication.
Numerical Tests of Two Conjectures in Fake Real Quadratic Orders
Creators: name: Wang, Hongyan
Publisher: name: Graduate Studies
Year: 2017
Subjects: Education--Mathematics

description: A fake real quadratic order is defined based on an imaginary quadratic field and a prime p but behaves similarly to real quadratic orders. Two conjectures regarding fake real quadratic orders are discussed in the thesis. The first one is the Cohen-Lenstra heuristic. Our computation showed that for fixed p, the proportion of fake real quadratic orders for which the odd part of the class number is one converges to C=0.754458..., which equals exactly the proportion of real quadratic fields for which the odd part of the class number is one. The second one is the Ankeny-Artin-Chowla conjecture, which states that D∤b where b is the second coefficient of the fundamental unit in the real quadratic field Q(√D). No counterexamples have been found in real quadratic fields but we found numerous counterexamples in fake real quadratic orders and this is evidence that the conjecture is false for real quadratic fields.
Freehand drawing in the interior design teaching process
Creators: name: Kucharczyk-Brus, Beata
name: Zabawa-Krzypkowska, Joanna
Publisher: name: Faculty of Architecture, Wrocław University of Technology, Wrocław
Year: 2018
Subjects: freehand drawing, architectural drawing, teaching process

description: ARCHITECTUS; ISSN 1429-7507
Changes in the role of art subjects and methods of their teaching in the context of the architects’ curriculum at the Faculty of Architecture of the Wrocław University of Science and Technology
Creators: name: Jaszczuk, Paweł
Publisher: name: Faculty of Architecture, Wrocław University of Technology, Wrocław
Year: 2018
Subjects: drawing, painting, sculpture, space, education, changes

description: ARCHITECTUS; ISSN 1429-7507
Semantic composition of optimal process service plans in manufacturing with ODERU
Creators: name: Mazzola, Luca (Autor/in)
name: Kapahnke, Patrick (Autor/in)
name: Klusch, Matthias (Autor/in)
Publisher: name: Zenodo
Year: 2018
Subjects: BPMN
Industry 4.0
Process optimization
Semantic business process management
Semantic SOA
Service orchestration

description: Purpose

The need to flexibly react to the demands of the process and to the cost-efficient management of the value chain. In this context, the authors' novel pragmatic approach for automatically implementing service-based manufacturing processes at design and runtime within a cloud-based elastic manufacturing platform.

Design / methodology / approach

ODERU relies on a set of semantic annotations of business process models encoded into an extension of the business process model and notation (BPMN) 2.0 standard. Leveraging the paradigms of semantic SOA and XaaS, ODERU integrates pattern-based semantic composition of process service plans with QoS-based optimization based on multi-objective constraint optimization problem solving.

Findings

The successful validation of ODERU in two industrial use cases for maintenance process optimization and automotive production in the European project CREMA revealed its usefulness for service-based process optimization in general and for significant cost reductions in maintenance in particular.

Originality/value

ORU provides a pragmatic and flexible solution to optimal service composition with the following three main advantages: full integration of QoS-based optimization; executability of the generated optimal process service plans by an execution environment as they include service assignments, data flow (variable bindings) and optimally variable assignments; and support almost replanning in a single model and plan.
description: + ID der Publikation: hslu_57694 + Art des Beitrages: Wissenschaftliche Medien + Jahrgang: Volume 14 + Sprache: Englisch + Letzte Aktualisierung: 2019-01-29 10:26:15
Opening a window on Bálint syndrome : testing a spatial restriction of attention theory
Creators: name: Dalrymple, Kirsten A.
Publisher: name: University of British Columbia
Year: 2010

description: Bálint syndrome is a disorder of visual attention resulting from bilateral parieto-occipital lesions. Patients experience several visual deficits, including an inability to see more than one object at once, and often an inability to see single objects as wholes. This dissertation examines whether impaired object processing in Bálint syndrome results from a restricted spatial area of visual attention, which creates a “restricted visual window” through which patients view the world. In Study 1, brain activity of healthy individuals is recorded while they view hierarchical stimuli, stimuli that patients tend to see at a local, but not global, level. Activity increased when participants identified global letters, suggesting that patients may have difficulty perceiving these objects due to extra processing demands of the global form. Study 2 uses hierarchical letters to investigate whether patients can employ explicit viewing strategies to compensate for their visual deficits. The patient showed difficulty identifying the global level of the letters, and did not employ a strategy to compensate- she appeared to have little control over what she sees. Study 3 employs a manipulation of healthy vision to model these behaviours to understand what underlies this disorder. Restricting healthy individuals to seeing a small visual area (like “tunnel vision”) leads to object identification patterns similar those of Bálint patients, supporting the idea that a restricted area of visual processing may underlie the disorder. Study 4 used photos depicting social scenes to investigate how patients view complex stimuli. Unlike healthy individuals, patients do not look at the eyes of people in the scenes. In Studies 5-6, healthy individuals view these stimuli through the restricted viewing scenario from Study 3 to determine whether restricted viewing can also model patients’ viewing of complex stimuli. Like patients, healthy individuals made reduced fixations on eyes of people in scenes. Study 7 revisits a patient after some recovery. Her scanning of scenes was approaching normal. Manipulations of the restricted viewing paradigm modeled this recovery in healthy individuals, lending further support to the restricted vision model. The dissertation provides insights into normal and abnormal vision, particularly how the brain creates the objects we see.
Review of Hundt, Mollin & Pfenninger (2017), 'The changing English language'
Creators: name: Kaltenbach, Lena
name: Trips, Carola
Publisher: name: Journal of Historical Syntax
Year: 2020

description: Hundt, Marianne, Sandra Mollin & Simone E. Pfenninger (eds.). 2017. The Changing English Language: Psycholinguistic Perspectives. Cambridge: Cam- bridge University Press. 410 pp. https://doi.org/10.1017/9781316091746. Hardback: ISBN 9781107086869 | £100.99 · Paperback: ISBN 9781107451728 | £25.99 · e-Book: ISBN 9781108234481 | $27.00
description: Journal of Historical Syntax, Vol 4 No 7 (2020)
Measurement of dijet production with a veto on additional central jet activity in pp collisions at sqrt(s)=7 TeV using the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A measurement of jet activity in the rapidity interval bounded by a dijet system is presented. Events are vetoed if a jet with transverse momentum greater than 20 GeV is found between the two boundary jets. The fraction of dijet events that survive the jet veto is presented for boundary jets that are separated by up to six units of rapidity and with mean transverse momentum 50 < pT(avg) < 500 GeV. The mean multiplicity of jets above the veto scale in the rapidity interval bounded by the dijet system is also presented as an alternative method for quantifying perturbative QCD emission. The data are compared to a next-to-leading order plus parton shower prediction from the POWHEG-BOX, an all-order resummation using the HEJ calculation and the PYTHIA, HERWIG++ and ALPGEN event generators. The measurement was performed using pp collisions at sqrt(s)=7 TeV using data recorded by the ATLAS detector in 2010.
description: 17 pages plus author list (34 pages total), 20 individual (sub)figures, which are combined into 8 figures in the paper, submitted to JHEP. Minor changes to text and references
Integrating Text Mining, Data Mining, and Network Analysis to Analyze Biomarker Trends in Prostate Cancer and Breast Cancer
Creators: name: Jurca, Gabriela
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Computer Science
subject: Prostate Cancer
subject: breast cancer
subject: Data Mining
subject: text mining
subject: network analysis

description: Cancer is a serious disease which has many types and affects many people. One goal of biomedical researchers is to find genetic biomarkers for diagnosis and prognosis of cancer. Since there is already a vast amount of scientific publications on cancer, computational methods can be used to find hidden patterns from literature. This thesis presents a framework which investigates existing literature data by integrating text mining, data mining, and network analysis. We investigated gene-gene interactions, as well as novel interactions such as gene-year, gene-country, and abstract-country to find out how the discoveries varied over time and the interest of various research groups in different countries. Interesting trends have been identified and discussed, e.g., different genes are highlighted in relationship to different countries though the various genes were found to share functionality. Some of our results have been validated against results from other tools that predict gene relations and functions.