41 research outputs found

    A Collaborative Approach to Systematic Marine Protected Area Network Planning in British Columbia

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    In British Columbia, legislated responsibilities for the protection of marine values are a shared responsibility between federal and provincial governments. Traditionally, the governments of Canada and B.C. have established marine protected areas (MPAs) independently, on an ad-hoc basis, and often in response to single species or habitat specific conservation issues. This is challenging because dual designation may be required to meet MPA objectives, and ad hoc approaches may lead to gaps in biophysical representation and greater uncertainty for marine stakeholders. Recognizing the need to partner together and move towards more systematic marine conservation planning, the governments of Canada and B.C. have completed a strategy for the design of a network of MPAs on the Pacific Coast. The strategy proposes a clear vision, identifies priority goals and objectives, and recommends a set of general operating and network design principles to guide development and implementation of a coast-wide network of MPAs. Identifying gaps in biophysical representation is a preliminary step towards future implementation. Initial GIS analyses suggest gaps in biophysical representation in existing MPAs, reinforcing the need for a more collaborative systematic approach to MPA network planning in BC. This presentation will describe how governments will work collaboratively to design an effective network of MPAs through existing integrated marine spatial planning processes

    The Grizzly, November 22, 1994

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    Pew Roundtable Discusses Priorities at Ursinus • Clinton Wavers on School Prayer • Letters to the Editor: Parent Shows Concern Over Alcohol • Man Arrested for Threatening Children • Class of \u2798 Update • Iraq Recognizes Kuwait • Final Exam Schedule • Berman Features Watercolor Exhibit • Lady Bears Preseason Outlook • Ursinus\u27 All-Centennial Conference Performershttps://digitalcommons.ursinus.edu/grizzlynews/1348/thumbnail.jp

    Retrospective evaluation of whole exome and genome mutation calls in 746 cancer samples

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    Funder: NCI U24CA211006Abstract: The Cancer Genome Atlas (TCGA) and International Cancer Genome Consortium (ICGC) curated consensus somatic mutation calls using whole exome sequencing (WES) and whole genome sequencing (WGS), respectively. Here, as part of the ICGC/TCGA Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium, which aggregated whole genome sequencing data from 2,658 cancers across 38 tumour types, we compare WES and WGS side-by-side from 746 TCGA samples, finding that ~80% of mutations overlap in covered exonic regions. We estimate that low variant allele fraction (VAF < 15%) and clonal heterogeneity contribute up to 68% of private WGS mutations and 71% of private WES mutations. We observe that ~30% of private WGS mutations trace to mutations identified by a single variant caller in WES consensus efforts. WGS captures both ~50% more variation in exonic regions and un-observed mutations in loci with variable GC-content. Together, our analysis highlights technological divergences between two reproducible somatic variant detection efforts

    Observation of gravitational waves from the coalescence of a 2.5−4.5 M⊙ compact object and a neutron star

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

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    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&gt;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&lt;e≤0.3 at 0.33 Gpc−3 yr−1 at 90\% confidence level

    Ultralight vector dark matter search using data from the KAGRA O3GK run

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    Among the various candidates for dark matter (DM), ultralight vector DM can be probed by laser interferometric gravitational wave detectors through the measurement of oscillating length changes in the arm cavities. In this context, KAGRA has a unique feature due to differing compositions of its mirrors, enhancing the signal of vector DM in the length change in the auxiliary channels. Here we present the result of a search for U(1)B−L gauge boson DM using the KAGRA data from auxiliary length channels during the first joint observation run together with GEO600. By applying our search pipeline, which takes into account the stochastic nature of ultralight DM, upper bounds on the coupling strength between the U(1)B−L gauge boson and ordinary matter are obtained for a range of DM masses. While our constraints are less stringent than those derived from previous experiments, this study demonstrates the applicability of our method to the lower-mass vector DM search, which is made difficult in this measurement by the short observation time compared to the auto-correlation time scale of DM

    IELTS Graduation : Study Skills a Self-Study Course for all Academic Modules

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    IELTS Graduation - Study Skills

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