cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Linear Stability of Schwarzschild Spacetime
Creators: Keller, Jordan
Publisher: name: Columbia University
Year: 2017
Subjects: subject: Mathematics
subject: FOS: Mathematics
subject: Schwarzschild black holes
subject: Space and time

description: In this work, we study the theory of linearized gravity and prove the linear stability of Schwarzschild black holes as solutions of the vacuum Einstein equations. In particular, we prove that solutions to the linearized vacuum Einstein equations centered at a Schwarzschild metric, with suitably regular initial data, remain uniformly bounded and decay to a linearized Kerr metric on the exterior region.  Our method employs Hodge decomposition to split the solution into closed and co-closed portions, respectively identified with even-parity and odd-parity solutions in the physics literature. For both portions, we derive Regge-Wheeler type equations for decoupled, gauge-invariant quantities at the level of perturbed connection coefficients. A general framework for the analysis of Regge-Wheeler type equations is presented, identifying sufficient conditions for decay estimates. With the choice of an appropriate gauge in each of the two portions, such decay estimates on these decoupled quantities are used to establish decay of the linearized metric coefficients, completing the proof of linear stability. The initial value problem is formulated on Cauchy data sets, complementing the work of Dafermos-Holzegel-Rodnianski [6], where the linear stability of Schwarzschild is established for characteristic initial data sets.
On the Quantum Theory of Gravitating Particles
Creators: name: Mazur, Pawel O.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The present paper proposes a basis for new gravitational mechanics. The problem of finding the spectrum of mass-energy is reduced to a new kind of eigenvalue problem which intrinsically contains the fundamental length ${\it l} = \sqrt{Gh\over c^3}$.The new wave equations are difference wave equations in one representation of the theory.
description: TeX, 20 pp. Minor changes in the abstract as compared with the previous version
Witnessing non-Markovian dynamics through correlations
Creators: name: De Santis, Dario
name: Johansson, Markus
name: Bylicka, Bogna
name: Bernardes, Nadja K.
name: Acín, Antonio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Non-Markovian effects in an open-system dynamics are usually associated to information backflows from the environment to the system. However, the way these backflows manifest and how to detect them is unclear. A natural approach is to study the backflow in terms of the correlations the evolving system displays with another unperturbed system during the dynamics. In this work, we study the power of this approach to witness non-Markovian dynamics using different correlation measures. We identify simple dynamics where the failure of completely-positive divisibility is in one-to-one correspondence with a correlation backflow. We then focus on specific correlation measures, such as those based on entanglement and the mutual information, and identify their strengths and limitations. We conclude with a study of a recently introduced correlation measures based on state distinguishability and see how, for these measures, adding an extra auxiliary system enlarges the set of detectable non-Markovian dynamics.
description: 31 pages, 7 figures
Stationary Velocity Distributions in Traffic Flows
Creators: name: Ben-Naim, E.
name: Krapivsky, P. L.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We introduce a traffic flow model that incorporates clustering and passing. We obtain analytically the steady state characteristics of the flow from a Boltzmann-like equation. A single dimensionless parameter, R=c_0v_0t_0 with c_0 the concentration, v_0 the velocity range, and 1/t_0 the passing rate, determines the nature of the steady state. When R<<1, uninterrupted flow with single cars occurs. When R>>1, large clusters with average mass ~ R^α form, and the flux is J ~ R^{-γ}. The initial distribution of slow cars governs the statistics. When P_0(v) ~ v^μ as v->0, the scaling exponents are γ=1/(μ+2), α=1/2 when μ>0, and α=(μ+1)/(μ+2) when μ<0.
description: 7 pages, 3 figures, revtex
Instance and Output Optimal Parallel Algorithms for Acyclic Joins
Creators: name: Hu, Xiao
name: Yi, Ke
Publisher: name: arXiv
Year: 2019
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Massively parallel join algorithms have received much attention in recent years, while most prior work has focused on worst-optimal algorithms. However, the worst-case optimality of these join algorithms relies on hard instances having very large output sizes, which rarely appear in practice. A stronger notion of optimality is {\em output-optimal}, which requires an algorithm to be optimal within the class of all instances sharing the same input and output size. An even stronger optimality is {\em instance-optimal}, i.e., the algorithm is optimal on every single instance, but this may not always be achievable. In the traditional RAM model of computation, the classical Yannakakis algorithm is instance-optimal on any acyclic join. But in the massively parallel computation (MPC) model, the situation becomes much more complicated. We first show that for the class of r-hierarchical joins, instance-optimality can still be achieved in the MPC model. Then, we give a new MPC algorithm for an arbitrary acyclic join with load $O ({\IN \over p} + {\sqrt{\IN \cdot \OUT} \over p})$, where $\IN,\OUT$ are the input and output sizes of the join, and $p$ is the number of servers in the MPC model. This improves the MPC version of the Yannakakis algorithm by an $O (\sqrt{\OUT \over \IN} )$ factor. Furthermore, we show that this is output-optimal when $\OUT = O(p \cdot \IN)$, for every acyclic but non-r-hierarchical join. Finally, we give the first output-sensitive lower bound for the triangle join in the MPC model, showing that it is inherently more difficult than acyclic joins.
Vacuum Polarization Effects in the Global Monopole Spacetime in the Presence of Wu-Yang Magnetic Monopole
Creators: name: de Mello, E. R. Bezerra
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we consider the presence of the Wu-Yang magnetic monopole in the global monopole spacetime and their influence on the vacuum polarization effects around these two monopoles placed together. According to Wu-Yang [Nucl. Phys. {\bf B107}, 365 (1976)] the solution of the Klein-Gordon equation in such an external field will not be an ordinary function but, instead, {\it section}. Because of the peculiar radial symmetry of the global monopole spacetime, it is possible to cover its space section by two overlapping regions, needed to define the singularity free vector potential, and to study the quantum effects due to a charged scalar field in this system. In order to develop this analysis we construct the explicit Euclidean scalar Green {\it section} associated with a charged massless field in a global monopole spacetime in the presence of the Abelian Wu-Yang magnetic monopole. Having this Green section it is possible to study the vacuum polarization effects. We explicitly calculate the renormalized vacuum expectation value $_{Ren.}$, associated with a charged scalar field operator and the respective energy-momentum tensor, $_{Ren.}$, which are expressed in terms of the parameter which codify the presence of the global and magnetic monopoles.
description: 18 pages, LaTex format, no figures
Linguistic Context Sensitivity as a Predictor of Prolonged Grief Symptoms
Creators: Stolove, Catherine Anne
Publisher: name: Columbia University
Year: 2019
Subjects: Clinical psychology
Grief--Psychological aspects
Psycholinguistics
Context (Linguistics)
Emotions and cognition

description: Following the loss of a loved one, grief is a near-universal experience. While most grieving individuals are able to cope effectively and return to baseline functioning over time, some develop persistent complex bereavement disorder (PCBD). This dissertation aims to elucidate the ways in which cognitive and emotional processing go awry in the context of PCBD. More specifically, it examines the relationship between the types of language that bereaved individuals use and their trajectories of adjustment in the first year following a loss. In particular, this dissertation examines context sensitivity in word use. Context sensitivity describes the degree to which an individual is attuned to the particular demands of a given task or situation. In the present study, linguistic context-sensitivity was measured by analyzing the use of words pertaining to certain categories within specific contexts (e.g., participants were asked to discuss a recent positive event, and the use of positive emotion words within their responses was analyzed). Results indicated that, among those individuals who display high levels of grief immediately following the loss of their spouse, the use of context-sensitive language predicted a favorable course of adjustment in the first year of bereavement with low levels of grief at one- year post-loss. Conversely, the use of context insensitive language predicted high levels of grief at one-year post-loss. These findings indicate that context sensitivity may instrumental in the development of PCBD and, as such, may help predict an individual’s course of adjustment immediately following a significant loss. A better understanding of these early signs of PCBD may greatly assist in the timely detection of the disorder so that intervention may be most effective. Furthermore, this field of inquiry also has the potential to deeply inform treatment modalities designed to help individuals cope in the wake of bereavement.
Archaeological investigations on the site of the former Rowe's Garage, Chichester, West Sussex.
Creators: name: Seager Smith, Rachael H
name: Cooke, Nicholas
name: Gale, Rowena M O
name: Knight, Stephanie
name: McKinley, Jacqueline I
name: Stevens, Chris J
Publisher: name: Archaeology Data Service
Year: 2008

description: Sussex Archaeological Collections, 145, 67-80
description: Excavation on land formerly occupied by Rowe's Garage on The Hornet, Chichester revealed a large, mid-first-century AD ditch, adding to the series of possibly defensive ditches previously identified immediately east of the later Roman town. During the rest of the Romano-British period, the site was used for small-scale domestic settlement, crop-processing and other agricultural activities. After the fourth century AD much of the western part of the site was quarried for clay and gravel. A handful of features provided evidence for the medieval and later suburb known to have developed outside the Eastgate from the thirteenth century; any more ephemeral remains were probably destroyed during construction of Rowe's Garage itself.
Additional file 1 of Effects of traditional Chinese medicine combined with chemotherapy for extensive-stage small-cell lung cancer patients on improving oncologic survival: study protocol of a multicenter, randomized, single-blind, placebo-controlled trial
Creators: name: Chen, Yuyi
name: Yu, Mingwei
name: Liu, Zishen
name: Zhang, Yi
name: Li, Qiwei
name: Yang, Guowang
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Supplement 1. Compositions and dosages of TCM granules.
Hydrology and its implications for the Bronze Age landscape: a case study from the Sussex Coastal Plain and adjoining downland block
Creators: name: Dunkin, David J
Publisher: name: Archaeology Data Service
Year: 2017

description: Sussex Archaeological Collections, 154, 67-87
description: This article focuses on the significance of hydrological factors in the contextualisation of a Bronze Age landscape. The former presence or absence of water is crucially linked to the inhabitation pattern of Bronze Age communities. This is especially relevant in southern lowland England in the later Bronze Age period, due to the emergence of a bounded agricultural landscape containing structural evidence of fields, droveways, burnt mounds, cremation cemeteries and roundhouses (Yates 2007). The study focuses on one such enclave (Dunkin 2012) and comprises the East/West Sussex Coastal Plain and abutting downland block (Figs. 1 and 2). The integration of hydrological and archaeological data has been enabled by 20 years of developer-funded archaeology and has provided evidence of this Bronze Age infrastructure. Furthermore, recent research by the author has identified that dated burnt mounds, accumulations of burnt or fire-crazed stones, ash, and charcoal, may be important markers in the landscape of previous hydrological regimes.
A local hidden variable theory for the GHZ experiment
Creators: name: Szabo, Laszlo E.
name: Fine, Arthur
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A recent analysis by de Barros and Suppes of experimentally realizable GHZ correlations supports the conclusion that these correlations cannot be explained by introducing local hidden variables. We show, nevertheless, that their analysis does not exclude local hidden variable models in which the inefficiency in the experiment is an effect not only of random errors in the detector equipment, but is also the manifestation of a pre-set, hidden property of the particles ("prism models"). Indeed, we present an explicit prism model for the GHZ scenario; that is, a local hidden variable model entirely compatible with recent GHZ experiments.
description: 17 pages, LaTeX, 7 eps figures, computer demo: http://hps.elte.hu/~leszabo/GHZ.html, an improper figure is replaced
Gaussian analytic functions and operator symbols of Dirichlet type
Creators: name: Hedenmalm, Haakan
name: Shimorin, Serguei
Publisher: name: arXiv
Year: 2019
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: Let $\calH$ be a separable infinite-dimensional $\C$-linear Hilbert space, with sesquilinear inner product $\langle\cdot,\cdot\rangle_\calH$. Given any two orthonormal systems $x_1,x_2,x_3,\ldots$ and $y_1,y_2,y_3,\ldots$ in $\calH$, we show that the weighted sums \[ S(l):=\sum_{j,k:j+k=l}\bigg(\frac{l}{jk}\bigg)^{\frac12}\, \langle x_j,y_k\rangle_{\calH} \] satisfy $|S(l)|^2\lessapprox2$ holds in an average sense. A construction due to Zachary Chase shows that this would not be true if the number $2$ is replaced by the smaller number $1.72$. In the construction, the system $y_1,y_2,y_3,\ldots$ is a permutation of the system $x_1,x_2,x_3,\ldots$. We interpret our bound in terms of the correlation $\expect Φ(z)Ψ(z)$ of two copies of a Gaussian analytic function with possibly intricate Gaussian correlation structure between them. The Gaussian analytic function we study arises in connection with the classical Dirichlet space, which is naturally Möbius invariant. The study of the correlations $\expectΦ(z)Ψ(z)$ leads us to introduce a new space, the \emph{mock-Bloch space}, which is slightly bigger than the standard Bloch space. Our bound has an interpretation in terms of McMullen's asymptotic variance, originally considered for functions in the Bloch space. Finally, we show that the correlations $\expectΦ(z)Ψ(w)$ may be expressed as Dirichlet symbols of contractions on $L^2(\D)$, and show that the Dirichlet symbols of Grunsky operators associated with univalent functions find a natural characterization in terms of a nonlinear wave equation.
description: 23 pages
Linear versus Ecological Perspective in Clinical Judgments of Social Work Students
Creators: Teitelbaum, Ezra
Publisher: name: Columbia University
Year: 1991
Subjects: Social service
Social sciences--Research

description: This study explores the dialectic between the older, linear-mechanistic approach of the clinical-normative-individual-system model, and the newer, ecological-systems approach of the life model. Theoretical issues are outlined as they have unfolded during several decades.

The principal independent variable is clinical-orientation of clinician-subjects with regard to degree of adherence to linear-mechanistic and/or ecological-systems approaches. Secondary independent variables are duration-severity and interpersonal-context of client problem/situations, described in four situational vignettes. Hypotheses predict positive correlations between measures of each independent variable, and degree of linear versus ecological weighting to clinicians' assessments and intervention plans for each vignette.

Data were collected in 1980 from 152 second-year graduate students in casework and direct practice, who represented an initial pool of 1,007 students from fourteen CSWE-approved schools which provided unrestricted cooperation, through lists of eligible students.

Three instruments were utilized: (a) An informational questionnaire inquired about students' willingness to participate, and characteristics which would enable the researcher to determine eligibility, and identify extraneous effects. (b) The second sought graded measures of subjects' adherence to specific theoretical principles of linear or ecological approaches. (c) The final instrument sought repeated measures of type of assessment and intervention plan (linear or ecological), formulated in response to systematically varied vignette conditions.

Findings include several positive correlations between self-rated clinical-orientation and assessment measures, and fewer positive correlations between clinical-orientation and intervention measures. The interpersonally isolated client whose problem/situation is chronic tends to pull judgments in the direction of linear-mechanistically weighted assessments and intervention plans, regardless of clinician's orientation.

Implications for teaching the ecological approach are explored. Use of the clinical-orientation instrument for student self-observation is suggested.

Research implications include refining of instrumentation, and comparison of seasoned and student clinicians, to test empirical applicability of the ecological approach.
Leptoconops (Holoconops) belkini Wirth and Atchley
Creators: name: Phillips, Robert A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Ceratopogonidae
Leptoconops
Leptoconops belkini

description: Leptoconops (Holoconops) belkini Wirth and Atchley
(Fig. 15)
 Leptoconops (Holoconops) belkini Wirth and Atchley, 1973: 37 (key; female, male; fig. female head, wing, hind tibial comb, genitalia, hind tarsomere 5, palpus, male genitalia, antenna; California).
 Diagnosis. (Table 13) Entirely dark brown to black; stigma pale, often indistinct; eyes bare; palpal segment 3 sensory pit as deep as wide, broadening internally on female (as in Fig. 32 L. foulki); hind tibial comb with four spines; claw without basal tooth. Female: antenna with 11 flagellomeres; clypeus with four setae, median pair about as far apart from each other as from corresponding lateral setae; hind tarsomere 3 ~1.5× longer than 5; two ovoid spermathecae, vestigial third absent; cerci>3× longer than wide (as in Fig. 1). Male: tergite 9 with distal shoulders abruptly narrowed to base of adjacent apicolateral processes; aedeagal sclerites longer than any paramere sclerite,>0.3 as long as gonocoxite; strongly sclerotized lobe in median portion of tergite 9 dorsal to aedeagus.
 Distribution. California, Arizona.
 Adult behavior. Females and males have been collected on the face of and swarming around a human, but not biting (Wirth and Atchley 1973); and Mullens and Dada (1992a) collected L. belkini from domestic rabbit (Oryctolagus cuniculus), Japanese quail (Coturnix japonica), and bighorn sheep (Ovis canadensis nelsoni Merriam, Bovidae).
description: Published as part of Phillips, Robert A., 2022, Culicoides Latreille and Leptoconops Skuse biting midges of the southwestern United States with emphasis on the Canyonlands of southeastern Utah (Diptera: Ceratopogonidae), pp. 1-214 in Insecta Mundi 2022 (907) on pages 18-19, DOI: 10.5281/zenodo.6391684
A History of Feynman's Sum over Histories in Quantum Mechanics
Creators: name: Inomata, Akira
name: Junker, Georg
Publisher: name: arXiv
Year: 1998
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: A history of Feynman's sum over histories is presented in brief. A focus is placed on the progress of path-integration techniques for exactly path-integrable problems in quantum mechanics.
description: 3 pages, to appear in the proceedings of the 6th International Conference on "Path-Integrals from peV to TeV", Florence, Italy, 1998
Counting States of Near-Extremal Black Holes
Creators: name: Horowitz, Gary
name: Strominger, Andrew
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A six-dimensional black string is considered and its Bekenstein-Hawking entropy computed. It is shown that to leading order above extremality, this entropy precisely counts the number of string states with the given energy and charges. This identification implies that Hawking decay of the near-extremal black string can be analyzed in string perturbation theory and is perturbatively unitary.
description: 11 pages, references corrected
Linking plant traits and herbivory in grassland biodiversity-ecosystem functioning research
Creators: Flynn, Dan F. B.
Publisher: name: Columbia University
Year: 2011
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Botany
subject: Biology

description: Increased availability of data on morphological, physiological, and behavioral traits of species has improved understanding of the processes driving community assembly and the consequences of community disassembly for ecosystem functioning. In addition, there has also been a call for advancing the multitrophic view of biodiversity- ecosystem functioning. Here I propose a trait-based framework to merge plant-herbivore interactions with biodiversity-ecosystem function relationships. This framework links plant growth and defense strategies, herbivore feeding preferences, and primary production in terrestrial plant communities. I empirically tested these proposed linkages in laboratory and field experiments carried out in the understudied grasslands of Inner Mongolia, China. I found that a dominant generalist grasshopper Oedaleus asiaticus exhibits feeding preference for plants of high palatability when equally available, but in the field feeds on nearly any graminoid which is dominant. This behavior potentially allows subdominant plants to coexist, maintaining plant diversity. To link feeding behavior to consequences for plant communities, I carried out detailed measurements of plant morphological and physiological traits in the field and experimentally manipulated grasshopper feeding intensity. Using a novel analytical tool, I found that plant communities in these grasslands exhibit high niche overlap, regardless of intensity of herbivory by grasshoppers or sheep. This result indicates that environmental filtering structures these communities more than limiting similarity. Extending the use of traits beyond the study system in Inner Mongolia, I test the how both functional and phylogenetic diversity explain the biodiversity effect on grassland ecosystem functioning. The promise for merging tools from evolutionary biology and functional ecology is great, as these diversity metrics provide superior explanatory power in a meta-analysis of biodiversity experiments. Future work should be addressed at clarifying which functional traits are most strongly reflected in measures of phylogenetic diversity, including strategies of compensating for or avoiding herbivory.
Born-Infeld Kinematics and Correction to the Thomas Precession
Creators: name: Schuller, F. P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Dynamical symmetries of Born-Infeld theory associated with its maximal field strength are encoded in a geometry on the tangent bundle of spacetime manifolds. The resulting extension of general relativity respecting a finite upper bound on accelerations is put to use in the discussion of particle dynamics, first quantization, and the derivation of a correction to the Thomas precession.
description: LaTex, 8 pages, 1 diagram. Journal version
A Radiative Heating Model for Chondrule and Chondrite Formation
Creators: name: Herbst, William
name: Greenwood, James P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We propose that chondrules and chondrites formed together during a brief radiative heating event caused by the close encounter of a small (m to km-scale), primitive planetesimal (SPP) with incandescent lava on the surface of a large (100 km-scale) differentiated planetesimal (LDP). In our scenario, chondrite lithification occurs by hot isostatic pressing (HIP) simultaneously with chondrule formation, in accordance with the constraints of complementarity and cluster chondrites. Thermal models of LDPs formed near t=0 predict that there will be a very narrow window of time, coincident with the chondrule formation epoch, during which crusts are thin enough to frequently rupture by impact, volcanism and/or crustal foundering, releasing hot magma to their surfaces. The heating curves we calculate are more gradual and symmetric than the "flash heating" characteristic of nebular models, but in agreement with the constraints of experimental petrology. The SPP itself is a plausible source of the excess O, Na and Si vapor pressure (compared to a solar nebula environment) that is required by chondrule observations. Laboratory experiments demonstrate that FeO-poor porphyritic olivine chondrules, the most voluminous type of chondrule, can be made using heating and cooling curves predicted by the "flyby" model. If chondrules are a by-product of chondrite lithification, then their high volume abundance within well-lithified chondritic material is not evidence that they were once widespread within the Solar System. Relatively rare events, such as the flybys modeled here, could account for their abundance in the meteorite record.
description: Accepted for publication in Icarus
Calculation of Hirzebruch genera for manifolds acted on by the group Z/p via invariants of the action
Creators: name: Panov, Taras E.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Algebraic Topology (math.AT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 57R20; 57S25 (Primary) 58G10 (Secondary)

description: We obtain general formulae expressing Hirzebruch genera of a manifold with Z/p-action in terms of invariants of this action (the sets of weights of fixed points). As an illustration, we consider numerous particular cases of well-known genera, in particular, the elliptic genus. We also describe the connection with the so-called Conner-Floyd equations for the weights of fixed points.
description: 33 pages, AMSTeX, dvi/pdf output problem corrected
Lipoprotein Lipase in the Arterial Wall: Regulation by Dietary Fatty Acids
Creators: Chang, Chuchun Liz
Publisher: name: Columbia University
Year: 2011
Subjects: Medical sciences

description: Arterial LDL deposition is a key step in initiating atherosclerosis. Saturated fat (SAT)-enriched diets increase arterial LDL deposition, total and selective LDL-cholesterol uptakes, and arterial lipoprotein lipase (LpL). Because consumption of n-3 fatty acids (FA), such as EPA and DHA, potentially reduces the risk for cardiovascular disease (CVD), we investigated the mechanisms whereby dietary FA, metabolic syndrome and LpL interact to influence arterial lipid uptake in atherosclerosis. We hypothesized that specific FA, SAT versus n-3, alter the recruitment of different cell populations to the arterial wall and modulate arterial LpL levels and distribution, which in turn affects the development of atherosclerosis. To test these hypotheses, we carried out a series of dietary feeding studies in different mouse models to determine the effects of saturated versus n-3 FA on LDL-cholesterol delivery and arterial LpL levels. The data presented in this thesis demonstrate that high levels of saturated FA and insulin resistance contribute to accumulation of macrophages that secrete LpL and thus favor the development of atherosclerosis. Furthermore, deficiency of LpL in the arterial wall reduced aortic macrophage populations and macrophage infiltration. The reconstitution of macrophage expressing LpL in LpL knockout models led to increases in macrophage populations in the arterial wall. Macrophage-associated LpL may increase "anchoring" of LDL and macrophages. n-3 FA decrease the presence of inflammatory macrophages and LpL; hence are associated with less arterial cholesterol delivery, inflammation and atherosclerosis. In an atherosclerosis-prone mouse model (LDLR-/-), gradual replacements of SAT with n-3 ameliorates abnormal lipid profiles and atherosclerosis. Thus, n-3 FA decrease risk for CVD in part by decreasing arterial macrophage-associated LpL. Interacting factors, such as PPARβ/Î´, likely play an important role in regulation of arterial-wall LpL levels in response to FA. Increased arterial Foxo1 expression can contribute to decreased PPARÎ± levels in the group fed n-3 FA. The levels of GPIHBP1 in the arterial wall correlate with arterial macrophage number. This indicates the existence of other pathways important in mediating changes in LpL levels and arterial lipid deposition. These studies as described here defined 'novel' mechanisms underlying the potential of n-3 FA to decrease risk for CVD.
Leptoconops (Holoconops) andersoni Clastrier and Wirth
Creators: name: Phillips, Robert A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Ceratopogonidae
Leptoconops
Leptoconops andersoni

description: Leptoconops (Holoconops) andersoni Clastrier and Wirth
 Leptoconops (Holoconops) andersoni Clastrier and Wirth, 1978: 35 (key; female; fig. female antenna, palpus, spermathecae; California).
 Diagnosis. (Table 13) Body blackish, femora and tibiae blackish, tarsomeres blackish except paler on ventral surface of fore tarsomere 1; palpal segment 3 sensory pit as deep as wide, broadening internally on female (as in Fig. 11 L. knowltoni); clypeus with four setae, median pair <0.5 as far apart from each other as from corresponding lateral setae; mid tarsomere 1 with at least one submedian spine. Female stigma posterior margin convex, distal tip rounded; antenna with 11 flagellomeres; flagellomere 11 without submedian black setae; flagellomere 4 dorsal hyaline sensory seta distal and medial to long black seta, out of axial alignment with corresponding sensory setae on flagellomeres 5–10 (as in Fig. 30 L. sublettei); hyaline sensory setae on flagellomeres 9–10 broadly separated; hind tarsomere 3>1.5× longer than 5; spermathecae ovoid, without caplike diverticulum; cerci>3× longer than wide (Fig. 1). Male unknown.
 Distribution. California (Mendocino County).
 Adult behavior. Females have been collected from the ears of deer on 17 April and from a calf on 18 May near Hopland, California (Clastrier and Wirth 1978).
 Remarks. No L. andersoni were examined.
description: Published as part of Phillips, Robert A., 2022, Culicoides Latreille and Leptoconops Skuse biting midges of the southwestern United States with emphasis on the Canyonlands of southeastern Utah (Diptera: Ceratopogonidae), pp. 1-214 in Insecta Mundi 2022 (907) on page 21, DOI: 10.5281/zenodo.6391684
title: Vierteljahresschrift für praktische Pharmacie 21. Band 1872
Creators: name: :None
Publisher: name: Grubert
Year: 1872
Subjects: subject: 615

description: Vierteljahresschrift für praktische Pharmacie 1. 1852 - 22. 1873: herausgegeben von Georg Christoph Wittstein, vol. 21.1872
Coherent electrical readout of defect spins in 4H-SiC by photo-ionization at ambient conditions
Creators: name: Niethammer, Matthias
name: Widmann, Matthias
name: Rendler, Torsten
name: Morioka, Naoya
name: Chen, Yu-Chen
name: Stöhr, Rainer
name: Hassan, Jawad Ul
name: Onoda, Shinobu
name: Ohshima, Takeshi
name: Lee, Sang-Yun
name: Mukherjee, Amlan
name: Isoya, Junichi
name: Son, Nguyen Tien
name: Wrachtrup, Jörg
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum technology relies on proper hardware, enabling coherent quantum state control as well as efficient quantum state readout. In this regard, wide-bandgap semiconductors are an emerging material platform with scalable wafer fabrication methods, hosting several promising spin-active point defects. Conventional readout protocols for such defect spins rely on fluorescence detection and are limited by a low photon collection efficiency. Here, we demonstrate a photo-electrical detection technique for electron spins of silicon vacancy ensembles in the 4H polytype of silicon carbide (SiC). Further, we show coherent spin state control, proving that this electrical readout technique enables detection of coherent spin motion. Our readout works at ambient conditions, while other electrical readout approaches are often limited to low temperatures or high magnetic fields. Considering the excellent maturity of SiC electronics with the outstanding coherence properties of SiC defects the approach presented here holds promises for scalability of future SiC quantum devices.
Caroline Petit
Creators: name: Leibowitch, Jacques (1942-2020)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: 1 fichier (4 pages)
description: Autres destinataires : Hervé Latapie, Richard Cross, Christine Bergström
Effect of shear on droplets in a binary mixture
Creators: name: Wagner, Alexander J.
name: Yeomans, J. M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: In this article we use a lattice-Boltzmann simulation to examine the effects of shear flow on a equilibrium droplet in a phase separated binary mixture. We find that large drops break up as the shear is increased but small drops dissolve. We also show how the tip-streaming, observed for deformed drops, leads to a state of dynamic equilibrium.
description: 10 pages, LaTex, to appear in International Journal of Physics C
The North American Bats and Mines Project : a cooperative approach for integrating bat conservation and mine-land reclamation
Creators: name: Ducummon, Sheryl L.
Publisher: name: The University of British Columbia
Year: 2009

description: Inactive underground mines now provide essential habitat for over half of North America's 45 bat species. However, thousands of abandoned mines have already been closed or are slated for safety closures, and many are destroyed during renewed mining. The available evidence suggests that millions of bats have already been lost due to these closures. Bats are primary predators of insects that cost farmers and foresters billions of dollars annually, therefore, threats to bat survival are cause for serious concern. Fortunately, mine closure methods exist that protect both bats and humans. Bat Conservation International and the USDI-Bureau of Land Management founded the North American Bats and Mines Project to provide leadership and coordination to minimize mine-roosting bats losses. This partnership involves federal, state, and local officials and the mining industry. BCI has trained hundreds of managers in bat/mine assessment techniques and bat-compatible closure methods, published technical bat/mine information, presented papers at national mining and wildlife conferences, and collaborated with numerous government and private partners to protect the most important mine-roosting bat populations. Our new initiative, Mining for Habitat, helps mining companies and private landowners develop bat habitat conservation and enhancement plans including bat education, surveys, mitigation, and even artificial roost creation.
An Earthwork at Tottingworth, Heathfield
Creators: name: Gardiner, Mark
Publisher: name: Archaeology Data Service
Year: 2021

description: Sussex Archaeological Collections, 131, 68-72
description: A section excavated across the ditch of an oval-shaped enclosure at Tottingworth, Heathfield recovered medieval pottery dated to the 13th or 14th century, and squared pieces of stone apparently from a building. The documentary evidence for the site does not allow the identification of a tenant sufficiently wealthy to have constructed the earthwork and masonry buildings. The enclosure can best be categorised as a poorly defended ringwork.
Listening for Sounds of Striving: Maxine Greene and Stories of Music Teacher Becomings
Creators: Scarlato, Mya Katherine Magnusson
Publisher: name: Columbia University
Year: 2021
Subjects: Music--Instruction and study
Music teachers--Attitudes
Education--Philosophy
Storytelling in education

description: This phenomenological study explores the lived experiences of three music teachers who are invited to view themselves and their practices as “becoming” in the context of Maxine Greene’s philosophy of education. In communion with my own becoming as teacher and researcher, I explore the aspects of my participants’ musical and teaching identities over the course of their careers and in relation to their unique teaching contexts. Throughout this project, I explored qualities of resonance, striving, a sense of artistic “re-capturing,” wide-awakeness, social imagination, and courage. I came to understand that stories play an important role in shaping our perceptions of reality and awareness of the lived lives of the “other” as we strive together toward a more just society through artistic encounters in education.
Krein's entire functions and the Bernstein approximation problem
Creators: name: Borichev, Alexander
name: Sodin, Mikhail
Publisher: name: arXiv
Year: 2000
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30D20

description: We extend two theorems of Krein concerning entire functions of Cartwright class, and give applications for the Bernstein weighted approximation problem.
description: 20 pages, to be published in Illinois Journal of Mathematics
A semiclassical approach to the Dirac equation
Creators: name: Bolte, Jens
name: Keppeler, Stefan
Publisher: name: arXiv
Year: 1998
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We derive a semiclassical time evolution kernel and a trace formula for the Dirac equation. The classical trajectories that enter the expressions are determined by the dynamics of relativistic point particles. We carefully investigate the transport of the spin degrees of freedom along the trajectories which can be understood geometrically as parallel transport in a vector bundle with SU(2) holonomy. Furthermore, we give an interpretation in terms of a classical spin vector that is transported along the trajectories and whose dynamics, dictated by the equation of Thomas precession, gives rise to dynamical and geometric phases every orbit is weighted by. We also present an analogous approach to the Pauli equation which we analyse in two different limits.
Listening to the Voices that Sing a Different Song: Mathematically Successful and Socially Conscious Students of Color
Creators: Johnson, Rebecca Lee
Publisher: name: Columbia University
Year: 2020
Subjects: Algebra--Study and teaching (Secondary)
Minority students
Low-income students
High school students--Social conditions--Research
Mathematics--Study and teaching (Secondary)
Consciousness--Social aspects

description: This study analyzes how a group of six high school freshmen responded to engaging in Teaching and Learning Mathematics for Social Justice (TLMSJ), which is one possible articulation of criticalmathematics. Commonalities among this diverse group of students were that they were all students of Color from low socioeconomic status, enrolled in Algebra 1, attending the same Title I public high school. These students participated in an eight-week-long after-school program named “Socially Aware Algebra Students” (SAAS), where they investigated a variety of social injustices through doing Algebra 1 mathematics. This program was designed and facilitated by this study’s author, whose role would be considered practitioner–researcher. The purpose of this dissertation is to address the need for feedback on TLMSJ from a diverse group of students of Color. Specifically, this study sought to determine the participants’ perceptions both of engaging in TLMSJ and of the social justice topics that were investigated as well as the participants’ mathematical learnings that occurred during the SAAS program. This qualitative ethnographic case study relied on the following data sources: interviews, questionnaires, observations, journal entries, student work products, and pre- and posttests. Findings suggest that students’ reactions to this particular version of learning mathematics through social justice are as varied as the students themselves. While all participants reported increased mathematical skill and confidence due to their participation in SAAS and all enjoyed learning mathematics that was related to real-life topics, not every participant was interested in learning about social injustices. Secondly, the post-assessment data did not display measurable growth, despite the participants’ perceptions of their mathematical improvement. These findings suggest that TLMSJ, despite being the most common articulation of criticalmathematics, may not be the most effective means by which mathematics teachers can render their teaching socially just. The study concludes with various recommendations for mathematics teachers interested either in teaching mathematics through social justice topics, or in teaching mathematics in ways that are aligned with the spirit of social justice.
Massless Black Holes as Black Diholes and Quadruholes
Creators: name: Ortin, Tomas
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Massless black holes can be understood as bound states of a (positive mass) extreme a=\sqrt{3} black hole and a singular object with opposite (i.e. negative) mass with vanishing ADM (total) mass but non-vanishing gravitational field. Supersymmetric balance of forces is crucial for the existence of this kind of bound states and explains why the system does not move at the speed of light. We also explain how supersymmetry allows for negative mass as long as it is never isolated but in bound states of total non-negative mass.
description: Version to be published in Physical Review Letters. Latex2e file
Compactifying fracton stabilizer models
Creators: name: Dua, Arpit
name: Williamson, Dominic J.
name: Haah, Jeongwan
name: Cheng, Meng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate two dimensional compactifications of three dimensional fractonic stabilizer models. We find the two dimensional topological phases produced as a function of compactification radius for the X-cube model and Haah's cubic code. Furthermore, we uncover translation symmetry-enrichment in the compactified cubic code that leads to twisted boundary conditions.
description: 15 + 2 pages, 4 figures, 1 + 6 tables
Listening to the Girls of Benin City: Human Rights, Trafficking and Victimhood in the Italian Sex Industry
Creators: Riva, Sofia
Publisher: name: Columbia University
Year: 2019
Subjects: Human rights
Human trafficking
Human trafficking--Law and legislation
Sex workers
Immigrants

description: This paper examines an archive of works by writer and activist Isoke Aikpitanyi, a Nigerian woman who was trafficked into the sex industry in Italy in 2000. Since her exit from the trade, Aikpitanyi has been involved in campaigning for a reform of the Italian state-sponsored anti-trafficking regime. This paper examines both her own story and those of other women, through an autobiography, Le Ragazze di Benin City (The Girls of Benin City, 2007), and a research project conducted with other scholars: 500 Storie Vere: Sulla Tratta Delle Ragazze Africane in Italia (500 True Stories: on the Trafficking of African Girls in Italy, 2011), which surveyed 500 Nigerian migrant women working in the sex industry in Italy. Through deconstructive analysis this paper seeks to understand this community’s subjective understanding of its own victimhood, and contrast it with the construction of victimhood put forward by the international, regional and national anti sex-trafficking regime, operating within a human rights framework. Specifically, this paper examines how these different perspectives affect how this community interacts with human rights mechanisms, and how its members design strategies of their own to either exit the sex industry entirely, or better their immediate circumstances.
iGen: Dynamic Interaction Inference for Configurable Software
Creators: name: Nguyen, ThanhVu
name: Koc, Ugur
name: Cheng, Javran
name: Foster, Jeffrey S.
name: Porter, Adam A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: To develop, analyze, and evolve today's highly configurable software systems, developers need deep knowledge of a system's configuration options, e.g., how options need to be set to reach certain locations, what configurations to use for testing, etc. Today, acquiring this detailed information requires manual effort that is difficult, expensive, and error prone. In this paper, we propose iGen, a novel, lightweight dynamic analysis technique that automatically discovers a program's \emph{interactions}---expressive logical formulae that give developers rich and detailed information about how a system's configuration option settings map to particular code coverage. iGen employs an iterative algorithm that runs a system under a small set of configurations, capturing coverage data; processes the coverage data to infer potential interactions; and then generates new configurations to further refine interactions in the next iteration. We evaluated iGen on 29 programs spanning five languages; the breadth of this study would be unachievable using prior interaction inference tools. Our results show that iGen finds precise interactions based on a very small fraction of the number of possible configurations. Moreover, iGen's results confirm several earlier hypotheses about typical interaction distributions and structures.