cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spontaneous vectorization of electrically charged black holes
Creators: name: Oliveira, João M. S.
name: Pombo, Alexandre M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, we generalise the spontaneous scalarization phenomena in Einstein-Maxwell-Scalar models to a higher spin field. The result is an Einstein-Maxwell-Vector model wherein a vector field is non-minimally coupled to the Maxwell invariant by an exponential coupling function. We show that the latter guarantees the circumvention of an associated no-hair theorem when the vector field has the form of an electric field. Different than its scalar counterpart, the new spontaneously vectorized Reissner-Nordström (RN) black holes are, always, undercharged while being entropically preferable. The solution profile and domain of existence are presented and analysed.
description: 12 pages, 5 figures
Interplay between different states in heavy fermion physics
Creators: name: Knebel, G.
name: Izawa, K.
name: Bourdarot, F.
name: Hassinger, E.
name: Salce, B.
name: Aoki, D.
name: Flouquet, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Calorimetry experiments under high pressure were used to clarify the interplay between different states such as superconductivity and antiferromagnetism in CeRhIn5, spin density wave and large moment antiferromagnetism in URu2Si2. Evidences are given on the re-entrance of antiferromagnetism under magnetic field in the superconducting phase of CeRhIn5 up to pc = 2.5 GPa where the Neel temperature will collapse in the absence of superconductivity. For URu2Si2 measurements up to 10 GPa support strongly the coexistence of spin density wave and large moment antiferromagnetism at high pressures.
description: 6 pages, 9 figures, presented at ICM2006
Single qubit gates by selective excitation with Jump and Return sequences
Creators: name: Bowdrey, Mark D.
name: Jones, Jonathan A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the implementation of frequency selective rotations using sequences of hard pulses and delays. These rotations are suitable for implementing single qubit gates in Nuclear Magnetic Resonance (NMR) quantum computers, but can also be used in other related implementations of quantum computing. We also derive methods for implementing hard pulses in the presence of moderate off-resonance effects, and describe a simple procedure for implementing a hard 180 degree rotation in a two spin system. Finally we show how these two approaches can be combined to produce more accurate frequency selective rotations.
description: Revised and extended at request of referee; now in press at Physical Review A. 6 pages RevTex including 3 figures
On Multistage Adaptive Biomarker-Directed Clinical Trial Design
Creators: name: Gao, Zhong
Publisher: name: Maryland Shared Open Access Repository
Year: 2012
Subjects: Adaptive
Biomarker-directed
Clinical trial
Multistage

description: Biomarker-directed targeted designs have been developed in recent years for pharmaceutical development for patient subpopulation with specific disease etiology. Multistage testing and adaption are desired for targeted designs to manage the risk of study population deviation, to conduct interim analysis and to make decisions on stochastic curtailment. We propose a multistage adaptive design for targeted trials that allows flexibility in multistage testing, stochastic curtailment decision-making, biomarker performance monitoring and biomarker performance-based sample size adaption.  The design is based on the theorem that the sequence of test statistics from multistage testings asymptotically satisfies Brownian motion in different targeted trial settings. The theorem is proven for both continuous and binary endpoints.  The simulation analysis has indicated that targeted multistage designs perform better than its untargeted counterpart in trial efficiency, effective information accumulation and stochastic curtailment decision-making by selecting targeted patients. However, this study has shown that biomarker performance influences heterogeneity of targeted study population and consequently affects planning and multistage testing of a targeted trial. The impact of biomarker performance has been extensively examined with regard to study efficiency, actual statistical power, type-I error, information accrument, and stochastic curtailment decision-making. To cope with the limited information of biomarker performance at study planning, we propose the biomarker performance-based sample size adaption for targeted trials for continuous and binary endpoints, respectively. The adaptive method can update actual biomarker performance at interim analysis and re-estimate sample size to achieve planned statistical power while preserving type-I error rate.  In summary, the multistage adaptive design improves targeted trials by providing great flexibility in multistage testing, early stopping, biomarker performance monitoring and biomarker performance-based sample size adaption.
Big Data for OPen innovation Energy Marketplace Deliverable 7.2 Pilot 1 – Spanish pilot description and results
Creators: name: Tanguy, Chone
name: Richaud, Luc
name: Cànaves, Lluís
Publisher: name: Zenodo
Year: 2023

description: The BD4OPEM project aims to design, develop, and deploy a Marketplace in order to provide innovative energy services for the reliable operation of the smart grid. These energy services will be provided through a marketplace, acting as an open, modular data analysis toolbox and facilitating data exchange and advanced usage. In this way, the data coming from the diverse energy domain sources will be put at the disposal of advanced energy service developers through a marketplace. The main objective of WP7 is to oversee the implementation and demonstration of the services developed in the previous WPs. Through this implementation, the aim is to prove two points:

That the tools developed are compliant with the given objectives and, if not, analyse and identify the reason for the difference and provide recommendations about the tool optimization to reach better results.

That the Marketplace platform and the Analytics toolbox permits flexibility, replicability, and scalability of the services between data providers and service users with adapted features.

Overall, this work package consists in providing the input for the analysis of the impact of the whole system developed during BD4OPEM project and giving recommendation to optimise its use and management. It is as well the opportunity to gather feedbacks from different demonstration sites and their respective leaders upon the platform, the services, and the customer experience. This document describes the results of the implementation of the services for the Spanish demonstration site.
Detecting Frequency Dependence in the D14 Coefficient of Dehydrated Cow Bone
Creators: name: Seay, Nathanael Robert
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: Bone
Bone healing
Maxwell-Wagner
Piezoelectricity
Streaming potentials

description: Controversy exists over the source of strain induced polarization in bone. The debate has spanned five decades and in recent years most authors have focused their attention on the promise of streaming potentials. However, there is strong evidence that traditional piezoelectricity contributes to polarization in bone. But there is also evidence in the literature that piezoelectricity does not act alone. At low frequencies the piezoelectric response was found to be on the order of 100 times greater than at high frequencies in the d31 axial coefficient. When the literature is considered as a whole this disparity is apparent. There is convincing evidence that piezoelectricity acts in conjunction with Maxwell-Wagner effects. Presented here is an examination of the prospect that classic piezoelectricity and Maxwell-Wagner effects are responsible for the disparity observed. Considerable effort is dedicated to detecting the small deformations in bone and distinguishing usable data from electromagnetic and mechanical noise.  Because of the sensitivity limitations of the equipment used in the present experiment, only the d14 coefficient was measured. Strong frequency dependence was observed in both the real and imaginary coefficient values. However, the experimental results show no evidence of Maxwell Wagner like dispersion. This is possibly due to the elimination of the microcapillary regions of water. While dry bone is still a composite material composed of mineral and collagen, it is most likely that the Maxwell-Wagner effects, if present, happen at the interface between the pockets of water in bone and the organic regions of hydrated bone.
Biophysical Studies and NMR Structure of the Interaction between RFX5 and RFXAP: Insights into the Transcription Complex that Regulates the Mammalian Immune Response
Creators: name: Laird, Kholiswa M.
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: MHCII
NMR
Protein
RFX
Transcription

description: The human adaptive immune response is regulated by major histocompatibility complex class II (MHCII) molecules. Initiation of the immune response against infection is directly related to the level of expression of MHCII molecules in the cell. A multi-protein complex, termed the MHCII enhanceosome, is responsible for the expression of MHCII genes. The key DNA binding component of the MHCII enhanceosome is the RFX complex. The RFX complex is comprised of three proteins - RFX5, RFXAP, and RFXB - all of which are required for DNA binding and assembly of the enhanceosome. Mutations or deletions in any of the RFX proteins that prevent RFX assembly or the recruitment of other proteins in the MHCII enhanceosome, results in a severe immunodeficiency disorder. RFX5 is comprised of four domains: the oligomerization domain, the RFX DNA binding domain, the dimerization domain, and the transactivation domain. RFX5 dimerizes through both the oligomerization domain and the dimerization domain, and this dimerization has been shown to be essential for RFX complex assembly. The oligomerization domain of RFX5 is also sufficient to interact with RFXAP. This thesis describes crystallographic studies performed on the dimerization domain of RFX5 to determine how it induces dimerization of RFX5. It also describes mutational studies of the oligomerization domain of RFX5 that influences the oligomeric state of RFX5 and its interaction with RFXAP. Finally, we describe the solution structure of the oligomerization domain of RFX5 bound to the interaction domain of RFXAP. These studies answer a number of questions posed by previous in vivo and in vitro studies and give a valuable insight into how the RFX complex assembles.
Self-organization toward criticality by synaptic plasticity
Creators: name: Zeraati, Roxana
name: Priesemann, Viola
name: Levina, Anna
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Self-organized criticality has been proposed to be a universal mechanism for the emergence of scale-free dynamics in many complex systems, and possibly in the brain. While such scale-free patterns were identified experimentally in many different types of neural recordings, the biological principles behind their emergence remained unknown. Utilizing different network models and motivated by experimental observations, synaptic plasticity was proposed as a possible mechanism to self-organize brain dynamics towards a critical point. In this review, we discuss how various biologically plausible plasticity rules operating across multiple timescales are implemented in the models and how they alter the network's dynamical state through modification of number and strength of the connections between the neurons. Some of these rules help to stabilize criticality, some need additional mechanisms to prevent divergence from the critical state. We propose that rules that are capable of bringing the network to criticality can be classified by how long the near-critical dynamics persists after their disabling. Finally, we discuss the role of self-organization and criticality in computation. Overall, the concept of criticality helps to shed light on brain function and self-organization, yet the overall dynamics of living neural networks seem to harnesses not only criticality for computation, but also deviations thereof.
description: 34 pages, 7 figures
CRANK THAT BASS: IS RADIO RAP PERPETUATIG THE IDEALS OF INEQUALITY AMONGST COLLEGIATE MALES?
Creators: name: EDWARDS, KYLE JARED TILLMAN
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: HIP-HOP
INEQUALITY
MALES
MISOGYNY
RADIO
RAP MUSIC

description: The rap music that is played on mainstream radio is currently laden with conspicuous consumption, negative portrayals of masculinity, and misogyny. These three themes are vehicles for stratification and inequality that could be potentially embedded into the psyche of all who listen to rap music on the radio. The purpose of this research is to see if listening to commercial rap music, with its pervasive themes perpetuating inequality, have impacted undergraduate collegiate males', who attend a mid-Atlantic research university, self esteem and or sentiments towards women. The research was conducted using a mixed methods procedure, featuring a content analysis of commercial rap music, an online survey (N = 168), and in person qualitative interviews (N = 5).  The results of this study can be used in future studies concerning commercial rap music.
Multigrid solution of distributed optimal control problems constrained by semilinear elliptic PDEs
Creators: name: Saraswat, Jyoti
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: Control constrained linear-elliptic problems
Distributed control
Multigrid methods
PDE constrained optimization
Preconditioning
Semilinear elliptic PDE

description: Optimization constrained by partial differential equations (PDEs) is a research area in which the scientific and engineering  communities have seen a growing interest over the last decade. The recent rise in interest was fostered by the tremendous  increase in computing power over the last twenty years. This can be attributed both to the tremendous advances in high-performance  computing technologies and to its wide range of applicability. However, just growth in computing power is  insufficient for tackling PDE-constrained optimization problems and there is always a need for ever-increasing  efficient algorithms. The objective of this dissertation is to develop, analyze and implement multigrid preconditioners for the  linear systems arising in the Newton-Krylov solution process for the nonlinear PDE constraints. Our main focus is on  semilinear elliptic constraints with no additional control or state constraints. We analyze the preconditioners both  theoretically and numerically.  In this work we show that the multigrid preconditioners are of optimal order (p = 2)  for piecewise linear finite element approximations.  We also study control-constrained optimal control problems constrained by  linear-elliptic equations. This problem is non-trivial from the  optimization point of view as the KKT system is now a complementarity system. We employ semismooth Newton methods (SSNMs)  to solve this problem efficiently. The multigrid preconditioners discussed here are extensions of  preconditioners developed previously for the unconstrained case. We present some new results and techniques that yield optimal order  multigrid preconditioners, at least for the case when the control is discretized using piecewise-constant finite elements.
The Effect of Program Generosity on Variation in Per Enrollee Medicaid Spending by State
Creators: name: Sisko, Andrea Marie
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: health spending
health spending variation
Medicaid
Medicaid generosity
Medicaid spending

description: In this dissertation, the impact of program generosity on per enrollee Medicaid spending by state is examined through a combination of descriptive and econometric analyses.  The dissertation employs a unique dataset that compiles a variety of Medicaid program data, including per enrollee spending and Medicaid program characteristics, covering the period 2002-2004.  Generosity indicators are constructed to quantitatively measure differences in program generosity across three dimensions: optional benefits, eligibility rules, and physician fees.  These indicators are the variables of interest in the econometric analysis of per enrollee Medicaid spending, while additionally controlling for relevant economic, demographic, health supply, ideology, and policy variables.   Analysis of the variation in per enrollee Medicaid spending by service and by Basis of Eligibility (BOE), measured by the coefficient of variation, demonstrated that the magnitude of variation in each service or BOE category was inversely related to the magnitude of per enrollee spending.  In other words, the services and eligibility groups with the lowest per enrollee spending demonstrate the greatest level of variation.  Overall variation most closely resembles that of the categories with the highest spending.  As a result, any effort to reduce variation would have to focus on those service or eligibility groups where per enrollee spending is highest. No one state is most or least generous across indicators, nor is generosity (or lack thereof) an absolute predictor of per enrollee spending.  The generosity indicators, plus year dummies, control for about 13 percent of variation in per enrollee Medicaid spending.  The complete spending model controls for 63 percent of the variation in per enrollee Medicaid spending.  Economic and ideology variables control for the largest share of the variation in per enrollee Medicaid spending.
Heat transfer between a nano-tip and a surface
Creators: name: Chapuis, Pierre-Olivier
name: Greffet, Jean-Jacques
name: Joulain, Karl
name: Volz, Sebastian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study quasi-ballistic heat transfer through air between a hot nanometer-scale tip and a sample. The hot tip/surface configuration is widely used to perform nonintrusive confined heating. Using a Monte-Carlo simulation, we find that the thermal conductance reaches 0.8 MW.m-2K-1 on the surface under the tip and show the shape of the heat flux density distribution (nanometer-scale thermal spot). These results show that a surface can be efficiently heated locally without contact. The temporal resolution of the heat transfer is a few tens of picoseconds.
description: 4 pages
The ethics of writing : Deconstruction and Pedagogy
Creators: name: Trifonas, Peter Pericles
Publisher: name: University of British Columbia
Year: 2009

description: Converging on that which pertains to educational theory and philosophy in the corpus of Jacques Derrida, the specificity of detail to be found in its rereading that follows, illustrates, by example, how the textuality-based machinations of deconstruction can offer a profound resistance to the instruments of domination embedded within the methodico-institutional praxeology of teaching-learning. Furthermore, how it can provide an effective manner for undoing the ethical substrata reinforcing the politics of educational theory and practice that suffuse the discursive gradients of concepts such as "freedom," "truth," "reason," or "humanity," and so on with ideological significance. To examine this thematization of the ethico-political focus of deconstruction with respect to issues of educational theory and practice in general, the "philosophico-methodological" approach I take relies, more or less, on an actively interpretative instance of the moment of reading as writing. That is, the "formativity" of the textual production is attuned to the complexity of the thinking-through and working-out, a thinking-workingthrough- out, of the act of meaning-making itself. Respecting the "exigencies" of a classical protocol of reading, the modality of the writing—its philosophical emphasis and style—integrates and establishes associative links to the terms of deconstruction by forcing reflection upon the objectifiable values of the meaning of itself, attempting to come to an understanding of the significance of Derrida's texts for actualizing a positive transformation of the institutional ground of pedagogy. Resisting the telos of decidability at the threshold of its own sense, the study compels "the reader"—as it does "the writer"—to push at the outer limits of their own horizons of knowledge. The "results" of this working through of the Derridean instance of deconstruction are articulated as part of the "ec-centricities" of reading as writing, wherein, the ideas drawn from these texts are turned back upon themselves and "worked-over," thereby, extending the intertextual schematism of the ideological norms and frames of reference within which the psyche operates. What I show through and by example is, how the radical polemics of deconstruction has value for analyzing the ethical and political implications of pedagogical contingencies of theory and practice.
Elicitation on transitive verb agreement and "when" clauses
Creators: name: Chilel Ramírez, Ovilia Marina
name: Scott, Tessa
name: Sales, Henry
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mam

description: This is a remote video interview held using Zoom. Henry Sales, a Mam speaker from San Juan Atitán, provides translation between English and Mam using Mam and Spanish.

The elicitation focuses on object marking with transitive verb tzyun "to grab" and inflection patterns of "when" clauses.

In this file bundle: 1 pdf of typed notes.
Anomalous exciton transport in response to a uniform, in-plane electric field
Creators: name: Chaudhary, Swati
name: Knapp, Christina
name: Refael, Gil
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Excitons are neutral objects, that, naively, should have no response to a uniform, electric field. Could the Berry curvature of the underlying electronic bands alter this conclusion? In this work, we show that Berry curvature can indeed lead to anomalous transport for excitons in 2D materials subject to a uniform, in-plane electric field. By considering the constituent electron and hole dynamics, we demonstrate that there exists a regime for which the corresponding anomalous velocities are in the same direction. We establish the resulting center of mass motion of the exciton through both a semiclassical and fully quantum mechanical analysis, and elucidate the critical role of Bloch oscillations in achieving this effect. We identify transition metal dichalcogenide heterobilayers as candidate materials to observe the effect.
description: 9+9 pages, 6+6 figures. Comments welcome!
Modelling and Estimation of Characteristics of the Rainfall Distribution
Creators: name: Travis, James Edmund
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: Anomalous Diffusion
Ground Validation
Precipitation
Radar and Rain Gauge Data
Rainfall Statistics

description: Rainfall varies in space and time in a highly irregular manner and is described naturally in terms of a stochastic process. A characteristic of rainfall statistics is that they depend strongly on the space-time scales over which rain data are averaged. A spectral model of precipitation has been developed based on a stochastic differential equation of fractional order, which allows concise description of the second moment statistics over any space-time averaging scale. The model is thus capable of providing a unified description of both radar and rain gauge data. We test the model with radar and gauge data collected contemporaneously at the NASA TRMM ground validation sites located near Melbourne, Florida.  Understanding precipitation is an essential component of climate modeling. Part of the calibration process for the recently launched GPM satellite involves comparison with radar observations. Ensuring that the radars are well calibrated is an import part of this process. We have used the developed stochastic model to explore sampling error for gauge and radar derived estimates of rain rates. This allows us to detect the presence and estimate the magnitude of any retrieval errors for the radar or gauge. We also formulated a standard linear regression analysis approach to the intercomparison of radar and gauge rain rate estimates in terms of the appropriate observed and model-derived quantities.
The propagation of a cultural or biological trait by neutral genetic drift in a subdivided population
Creators: name: Blythe, R A
Publisher: name: arXiv
Year: 2006
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: We study fixation probabilities and times as a consequence of neutral genetic drift in subdivided populations, motivated by a model of the cultural evolutionary process of language change that is described by the same mathematics as the biological process. We focus on the growth of fixation times with the number of subpopulations, and variation of fixation probabilities and times with initial distributions of mutants. A general formula for the fixation probability for arbitrary initial condition is derived by extending a duality relation between forwards- and backwards-time properties of the model from a panmictic to a subdivided population. From this we obtain new formulae, formally exact in the limit of extremely weak migration, for the mean fixation time from an arbitrary initial condition for Wright's island model, presenting two cases as examples. For more general models of population subdivision, formulae are introduced for an arbitrary number of mutants that are randomly located, and a single mutant whose position is known. These formulae contain parameters that typically have to be obtained numerically, a procedure we follow for two contrasting clustered models. These data suggest that variation of fixation time with the initial condition is slight, but depends strongly on the nature of subdivision. In particular, we demonstrate conditions under which the fixation time remains finite even in the limit of an infinite number of demes. In many cases - except this last where fixation in a finite time is seen - the time to fixation is shown to be in precise agreement with predictions from formulae for the asymptotic effective population size.
description: 17 pages, 8 figures, requires elsart5p.cls; substantially revised and improved version; accepted for publication in Theoretical Population Biology
Interventions to Address Persistent Fatigue Among Breast Cancer Survivors
Creators: name: Appling, Susan Elizabeth
Publisher: name: Maryland Shared Open Access Repository
Year: 2011
Subjects: Breast Cancer
Fatigue
Mind-body Medicine
Survivorship

description: The three manuscript option was used to present articles focused on fatigue among breast cancer survivors. The three manuscripts included a literature review of cancer survivorship issues with a special focus on persistent fatigue in breast cancer survivors and the second and third manuscripts described evaluations of interventions to treat persistent fatigue in breast cancer survivors.  Specifically, the initial study was a quasi-experimental study evaluating a 10 week group-based mind-body medicine (MBM)  intervention with results revealing significant and sustained improvement in fatigue at end-of-program and 2 and 6 months post-program completion.  The follow-up study added a family focused intervention to the standard MBM intervention.  Using a randomized controlled group design, this pilot study assessed the feasibility of adding a family focus and the impact it may have on fatigue improvement.  Fatigue improved significantly for both groups, but no significant difference was noted for those in the family-focused intervention.  Adding a family focus also added special challenges to recruitment and retention.
Aalto-1, multi-payload CubeSat: In-orbit results and lessons learned
Creators: name: Mughal, M. R.
name: Praks, J.
name: Vainio, R.
name: Janhunen, P.
name: Envall, J.
name: Näsilä, A.
name: Oleynik, P.
name: Niemelä, P.
name: Slavinskis, A.
name: Gieseler, J.
name: Jovanovic, N.
name: Riwanto, B.
name: Toivanen, P.
name: Leppinen, H.
name: Tikka, T.
name: Punkkinen, A.
name: Punkkinen, R.
name: Hedman, H. -P.
name: Lill, J. -O.
name: Slotte, J. M. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The in-orbit results and lessons learned of the first Finnish satellite Aalto-1 are briefly presented in this paper. Aalto-1, a three-unit CubeSat which was launched in June 2017, performed AaSI (Aalto Spectral Imager), Radiation Monitor (RADMON), and Electrostatic Plasma Brake (EPB) missions. The satellite partly fulfilled its mission objectives and allowed to either perform or attempt the experiments. Although attitude control was partially functional, AaSI and RADMON were able to acquire valuable measurements. EPB was successfully commissioned but the tether deployment was not successful.
description: 35 pages
Letter from R.S.D. [Robert Stanhope Dormer] to [James] Goldie
Creators: name: Dormer, Robert Stanhope
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to James Goldie from Robert Stanhope Dormer (R.S.D.), dated August 7, 1909; written on The Rainbow Ranche letterhead. The letter concerns Hewer's offer of the sale of Rainbow Ranche to Goldie, discussing possible terms and prices.
Tidal Dwarf Galaxies as Laboratories of Star Formation and Cosmology
Creators: name: Duc, Pierre-Alain
name: Bournaud, Frederic
name: Boquien, Mederic
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Star formation may take place in a variety of locations in interacting systems: in the dense core of mergers, in the shock regions at the interface of the colliding galaxies and even within the tidal debris expelled into the intergalactic medium. Along tidal tails, objects may be formed with masses ranging from those of super-star clusters to dwarf galaxies: the so-called Tidal Dwarf Galaxies (TDGs). Based on a set of multi-wavelength observations and extensive numerical simulations, we show how TDGs may simultaneously be used as laboratories to study the process of star-formation (SFE, IMF) in a specific environment and as probes of various cosmological properties, such as the distribution of dark matter and satellites around galaxies.
description: 6 pages, 3 figures, invited talk. To appear in: "Triggered Star Formation in a Turbulent ISM", IAU Symposium 237, Prague, Czech Republic, August 2006; eds. B.G.Elmegreen & J. Palous
EFFECTOR Project - D7.3 EFFECTOR Initial Web Presence
Creators: name: Basdeki Barbara
name: Pantelis, Kanellopoulos
Publisher: name: Zenodo
Year: 2021

description: The present deliverable describes the main features of the website that has been developed and the social media accounts created for the EFFECTOR project. EFFECTOR’s website will be an important dissemination tool for EFFECTOR, as it will contain all the necessary information on the project and will be constantly updated with the latest information. It will be the project’s main channel to the outside world, providing information on EFFECTOR objectives, partners, publications and news. The website will be updated on a regular basis and may also be revised as the project progresses. EFFECTOR’s social media accounts, a Twitter account and a LinkedIn page will actively advance the project’s dissemination activities and serve as reflector of the website’s content
Analytical approximation schemes for solving exact renormalization group equations. II Conformal mappings
Creators: name: Bervillier, C.
name: Boisseau, B.
name: Giacomini, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a new efficient analytical approximation scheme to two-point boundary value problems of ordinary differential equations (ODEs) adapted to the study of the derivative expansion of the exact renormalization group equations. It is based on a compactification of the complex plane of the independent variable using a mapping of an angular sector onto a unit disc. We explicitly treat, for the scalar field, the local potential approximations of the Wegner-Houghton equation in the dimension $d=3$ and of the Wilson-Polchinski equation for some values of $d\in ] 2,3] $. We then consider, for $d=3$, the coupled ODEs obtained by Morris at the second order of the derivative expansion. In both cases the fixed points and the eigenvalues attached to them are estimated. Comparisons of the results obtained are made with the shooting method and with the other analytical methods available. The best accuracy is reached with our new method which presents also the advantage of being very fast. Thus, it is well adapted to the study of more complicated systems of equations.
description: Final version to appear in Nucl. Phys. B. 1 reference added
Speed limits for radiation driven SMBH winds
Creators: name: Luminari, A.
name: Nicastro, F.
name: Elvis, M.
name: Piconcelli, E.
name: Tombesi, F.
name: Zappacosta, L.
name: Fiore, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Ultra Fast Outflows (UFOs) are an established feature in X-ray spectra of AGNs. According to the standard picture, they are launched at accretion disc scales with relativistic velocities, up to 0.3-0.4 c. Their high kinetic power is enough to induce an efficient feedback on galactic-scale, possibly contributing to the co-evolution between the central supermassive black hole (SMBH) and the host galaxy. It is therefore of paramount importance to fully understand the UFO physics, in particular the forces driving their acceleration and the relation with the accretion flow they originate from. In this paper we investigate the impact of special relativity effects on the radiative pressure exerted onto the outflow. The radiation received by the wind decreases for increasing outflow velocity v, implying that the standard Eddington limit argument has to be corrected according to v. Due to the limited ability of the radiation to counteract the SMBH gravity, we expect to find lower typical velocities with respect to the non-relativistic scenario. We integrate the relativistic-corrected outflow equation of motion for a realistic set of starting conditions. We concentrate on UFO typical values of ionisation, column density and launching radius. We explore a one-dimensional, spherical geometry and a 3D setting with a rotating thin accretion disc. We find that the inclusion of relativistic effects leads to sizeable differences in the wind dynamics and that v is reduced up to 50% with respect to the non-relativistic treatment. We compare our results with a sample of UFO from the literature, and we find that the relativistic-corrected velocities are systematically lower than the reported ones, indicating the need for an additional mechanism, such as magnetic driving, to explain the highest velocity components. These conclusions, derived for AGN winds, have a general applicability.
description: 16 pages, 15 figures. Shortened abstract. Accepted for publication in A&A
On the finite size corrections of anti-ferromagnetic anomalous dimensions in ${\cal N}=4$ SYM
Creators: name: Feverati, Giovanni
name: Fioravanti, Davide
name: Grinza, Paolo
name: Rossi, Marco
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Non-linear integral equations derived from Bethe Ansatz are used to evaluate finite size corrections to the highest (i.e. {\it anti-ferromagnetic}) and immediately lower anomalous dimensions of scalar operators in ${\cal N}=4$ SYM. In specific, multi-loop corrections are computed in the SU(2) operator subspace, whereas in the general SO(6) case only one loop calculations have been finalised. In these cases, the leading finite size corrections are given by means of explicit formulæand compared with the exact numerical evaluation. In addition, the method here proposed is quite general and especially suitable for numerical evaluations.
description: 38 pages, Latex revised version: draft formulae indicator deleted, one reference added, typos corrected, few minor text modifications
Electronic transport in sub-micrometric channels at the LaAlO$_{3}$/SrTiO$_{3}$ interface
Creators: name: Boselli, Margherita
name: Scheerer, Gernot
name: Filippone, Michele
name: Luo, Weiwei
name: Waelchli, Adrien
name: Kuzmenko, Alexey B.
name: Gariglio, Stefano
name: Giamarchi, Thierry
name: Triscone, Jean-Marc
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nanoscale channels realized at the conducting interface between LaAlO$_{3}$ and SrTiO$_{3}$ provide a perfect playground to explore the effect of dimensionality on the electronic properties of complex oxides. Here we compare the electric transport properties of devices realized using the AFM-writing technique and conventional photo-lithography. We find that the lateral size of the conducting paths has a strong effect on their transport behavior at low temperature. We observe a crossover from metallic to insulating regime occurring at about 50 K for channels narrower than 100 nm. The insulating upturn can be suppressed by the application of a positive backgate. We compare the behavior of nanometric constrictions in lithographically patterned channels with the result of model calculations and we conclude that the experimental observations are compatible with the physics of a quantum point contact.
description: 9 pages, 6 figures
Efficiency Improvements in Numerical Methods for Studying Connectivity in a Model of a Pancreatic Islet of Heterogeneous Beta Cells
Creators: name: Khuvis, Samuel
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: beta cells
computational islet
diabetes
numerical differentiation formulas
stiff ordinary differential equations

description: Diabetes is a disease characterized by a high concentration of glucose in a person's blood stream caused by either an insulin deficiency or insulin resistance. Insulin is a hormone produced in the pancreas that regulates the concentration of glucose in the blood stream. The endocrine system of the pancreas contains clusters of cells called islets of Langerhans. In this thesis we study the effects of the distribution of slow bursting and fast bursting beta-cells on the behavior of cells in an islet. We introduce a measure of connectivity based on the fraction of neighboring cells with speed different from the cell's own speed. This quantitative measure of connectivity provides an ordering of the different distributions of slow and fast cells. The dynamics of beta-cells are modeled with a seven variable and a three variable model which consist of coupled ordinary differential equations. A computational islet, a three-dimensional cube of beta-cells, is used to simulate an islet. We find that for both the three variable and seven variable models, as the connectivity of the islet increases the coupling strength at which the burst period of the cells is largest increases. We use Matlab's ode15s function that implements the numerical differentiation formulas, a well-respected and efficient ODE method for stiff initial value problems, in this simulation and demonstrate several orders of magnitude improvement in runtimes by making improvements to the code, in particular by providing a Jacobian in sparse storage mode.
Elicitation on verbal agreement paradigms
Creators: name: Aguilar Láinez, Onísimo Basbaldo
name: Scott, Tessa
name: Sales, Henry
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mam

description: This is a remote video interview held using Zoom. Henry Sales, a Mam speaker from San Juan Atitán, provides translation between English and Mam using Mam and Spanish.

The elicitation focuses on agreement paradigm of il "to see" with singular subjects and various objects.

In this file bundle: 1 pdf of typed notes.
Structure of the Feline Immunodeficiency Virus Matrix protein and the role of Phosphatidylinositol-(4,5)-bisphosphate in membrane targeting
Creators: name: Cox, Cassiah J.
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: Feline Immunodeficiency Virus (FIV)
Gag
HIV-1
Matrix
phosphatidylinositol-(4
5)-bisphosphate: (PI(4
5)P2
viral assembly

description: The feline immunodeficiency virus (FIV) has become an interesting model for HIV-1 due to notable similarities in viral replication and pathogenesis.  It has been established that the role of the FIV matrix protein is analogous to the role of the HIV-1 matrix protein.   The matrix protein assists in viral penetration, transportation of the proviral integration complex across the nuclear envelope, and localization of the assembling virion to the cell membrane.  Moreover, it has been reported that HIV-1 is targeted to the plasma membrane for viral assembly via an interaction between HIV-1 matrix and plasma membrane marker, phosphatidylinositol (4,5)-bisphosphate (PI(4,5)P2).  However, the FIV assembly process remains unclear.  To gain further insight into the function of the FIV matrix protein and the assembly process, we solved the three-dimensional structure of the FIV matrix protein, and explored the interaction between FIV matrix and PI(4,5)P2. In this study we report the three-dimensional solution structure of the unmyristoylated FIV matrix protein using high resolution Nuclear Magnetic Resonance (NMR).  The FIV matrix protein structure consists of five ?-helices, and a long flexible basic loop that has been implicated in membrane binding.  Our findings demonstrate that the three-dimensional structure of FIV matrix has a similar tertiary fold as primate lentiviruses, HIV-1, HIV-2 and SIV matrix.   To better understand the mechanism of viral assembly in FIV, we examined the role of PI(4,5)P2 in membrane targeting of FIV by studying the interaction between PI(4,5)P2 and the FIV matrix protein using NMR.  Ours studies show that similar to HIV-1 MA, FIV MA binds to PI(4,5)P2 facilitating membrane targeting.
Single Top-Quark Production in Flavor-Changing Z' Models
Creators: name: Arhrib, Abdesslam
name: Cheung, Kingman
name: Chiang, Cheng-Wei
name: Yuan, Tzu-Chiang
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In some models with an extra U(1) gauge boson Z', the gauge couplings of the Z' to different generations of fermions may not be universal. Flavor mixing in general can be induced at the tree level in the up-type and/or down-type quark sector after diagonalizing their mass matrices. In this work, we concentrate on the flavor mixing in the up-type quark sector. We deduce a constraint from D0-D0bar mixing. We study in detail single top-quark production via flavor-changing Z' exchange at the LHC and the ILC. We found that for a typical value of M_{Z'}=1 TeV, the production cross section at the LHC can be of the order of 1 fb. However, the background from the Standard Model single top-quark production makes it difficult to detect the flavor-changing Z' signal unless with a decent charm tagging method. On the other hand, at the ILC, the production cross section at the resonance energy of \sqrt{s} \approx M_{Z'} can reach a size of more than 100 fb. Even away from the resonance, the cross section at ILC is shown to be larger than the threshold of observability of 0.01 fb.
description: 22 pages, 6 figures; references added, submitted to Phys. Rev. D
Multiwavelength dissection of a massive heavily dust-obscured galaxy and its blue companion at z $\sim $2
Creators: name: Hamed, M.
name: Ciesla, L.
name: Béthermin, M.
name: Małek, K.
name: Daddi, E.
name: Sargent, M. T.
name: Gobat, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this work we study a system of two galaxies, Astarte and Adonis, at z $\sim $2 when the Universe was undergoing its peak of star formation activity. Astarte is a dusty star-forming galaxy at the massive-end of the main sequence (MS) and Adonis is a less-massive, bright in ultraviolet (UV), companion galaxy with an optical spectroscopic redshift. We analyse the physical properties of this system, and probe the gas mass of Astarte with its ALMA CO emission, to investigate whether this ultra-massive galaxy is quenching or not. We use CIGALE - a spectral energy distribution modeling code - to derive the key physical properties of Astarte and Adonis, mainly their star formation rates (SFRs), stellar masses, and dust luminosities. We inspect the variation of the physical parameters depending on the assumed dust attenuation law. We also estimate the molecular gas mass of Astarte from its CO emission, using different $α_{CO}$ and transition ratios ($r_{31}$) and discuss the implication of the various assumptions on the gas mass derivation. We find that Astarte exhibits a MS-like star formation activity, while Adonis is undergoing a strong starburst (SB) phase. The molecular gas mass of Astarte is far below the gas fraction of typical star-forming galaxies at z=2. This low gas content and high SFR, result in a depletion time of $0.22\pm0.07$ Gyrs, slightly shorter than what is expected for a MS galaxy at this redshift. The CO luminosity versus the total IR luminosity suggests a MS-like activity assuming a galactic conversion factor and a low transition ratio. The SFR of Astarte is of the same order using different attenuation laws, unlike its stellar mass that increases using shallow attenuation laws. We discuss these properties and suggest that Astarte might be experiencing a recent decrease of star formation activity and is quenching through the MS following a SB epoch.
description: 10 pages, 7 figures, accepted for publication in A&A. Abstract abridged for arXiv submission