43 research outputs found

    The Impact of China\u27s Environmental and Trade Policies on U.S. Plastic and Paper Waste Exports

    Get PDF
    This article documents major environmental and trade policy changes in China and their impact on plastic and paper waste trade between the U.S. and China and other trade partners. The article explains how U.S. plastic waste exports have been nearly annihilated by these policies. Paper waste trade is more resilient and has survived the policy shifts in China, although quite diminished

    The Impact of China’s Environmental and Trade Policies on U.S. Plastic and Paper Waste Exports

    Get PDF
    This article documents major environmental and trade policy changes in China and their impact on plastic and paper waste trade between the U.S. and China and other trade partners. The article explains how U.S. plastic waste exports have been nearly annihilated by these policies. Paper waste trade is more resilient and has survived the policy shifts in China, although quite diminished

    The Thread of Ariadne: A Collection of Essays by the Faculty of the Cooperative Research Center in the Humanities Dominican College of San Rafael

    Get PDF
    This volume is a Festschrift with a difference: a collection of essays written by colleagues to honor students -- past, present, future -- rather than an aged academic kindred spirit. the end-product of a \u27Great Conversation\u27 which extended over two years (1985-1987), the volume contains ten essays by nine Dominican College faculty members. Each essay has been developed in the context of inter-disciplinary discussions to which specialists in art history, history, literature, and philosophy contributed their knowledge and insights. Lest that statement suggest placid armchair soliloquies. let me quickly add that the discussions were frank and vigorous, and served to focus, refine, and sometimes change altogether the final topics of the essays. ~ from the Introduction by Sister M. Samuel Conlan, O.P.https://scholar.dominican.edu/books/1097/thumbnail.jp

    Search for eccentric black hole coalescences during the third observing run of LIGO and Virgo

    Get PDF
    Despite the growing number of confident binary black hole coalescences observed through gravitational waves so far, the astrophysical origin of these binaries remains uncertain. Orbital eccentricity is one of the clearest tracers of binary formation channels. Identifying binary eccentricity, however, remains challenging due to the limited availability of gravitational waveforms that include effects of eccentricity. Here, we present observational results for a waveform-independent search sensitive to eccentric black hole coalescences, covering the third observing run (O3) of the LIGO and Virgo detectors. We identified no new high-significance candidates beyond those that were already identified with searches focusing on quasi-circular binaries. We determine the sensitivity of our search to high-mass (total mass M>70 M⊙) binaries covering eccentricities up to 0.3 at 15 Hz orbital frequency, and use this to compare model predictions to search results. Assuming all detections are indeed quasi-circular, for our fiducial population model, we place an upper limit for the merger rate density of high-mass binaries with eccentricities 0<e≤0.3 at 0.33 Gpc−3 yr−1 at 90\% confidence level

    Search for gravitational-lensing signatures in the full third observing run of the LIGO-Virgo network

    Get PDF
    Gravitational lensing by massive objects along the line of sight to the source causes distortions of gravitational wave-signals; such distortions may reveal information about fundamental physics, cosmology and astrophysics. In this work, we have extended the search for lensing signatures to all binary black hole events from the third observing run of the LIGO--Virgo network. We search for repeated signals from strong lensing by 1) performing targeted searches for subthreshold signals, 2) calculating the degree of overlap amongst the intrinsic parameters and sky location of pairs of signals, 3) comparing the similarities of the spectrograms amongst pairs of signals, and 4) performing dual-signal Bayesian analysis that takes into account selection effects and astrophysical knowledge. We also search for distortions to the gravitational waveform caused by 1) frequency-independent phase shifts in strongly lensed images, and 2) frequency-dependent modulation of the amplitude and phase due to point masses. None of these searches yields significant evidence for lensing. Finally, we use the non-detection of gravitational-wave lensing to constrain the lensing rate based on the latest merger-rate estimates and the fraction of dark matter composed of compact objects

    Sentence Patterns in Gerard Manley Hopkins

    No full text
    Rhetoric can be defined as the use of.. .artifices or devices ...[purposes of] .. .persuasive or otherwise effective communication. It is an essential component of poetry, in which genre, communication of effect takes precedence even over communication of meaning. Rhetoric, of course, determines style, of which the major elements are diction or choice of vocabulary, figures of speech, known as tropes, and patterns of sentence structure known as schemes. It is the purpose of this paper to examine Gerard Manley Hopkins’ use of sentence patterns, that is, of rhetorical schemes, as they contribute to the poetic effect of his Marian composition, The Blessed Virgin Compared to the Air We Breathe
    corecore