452 research outputs found
Fishbach, Eugene (Birth, 1876-04-05)
No full textAddress: 212 Van Horn1764/Pg.2/1876/M Col/U.S./U.S./James Barnsfath, MDOriginal record filed in drawer labeled 'FILL-FISHER, D'
Fishbach, Elsor (Death, 1891-11-06)
No full textAddress: 99 Park AvenueAge at death: 45110/Pg 124/1891/M Col./Ky./Dr. E. Coffin/J. Gilligan/Union BaptistOriginal record filed in drawer labeled 'FILL-FISHER, D'
LIGO-Virgo-KAGRA's Oldest Black Holes:Probing Star Formation at Cosmic Noon With GWTC-3
No full textIn their third observing run, the LIGO-Virgo-KAGRA gravitational-wave (GW) observatory was sensitive to binary black hole (BBH) mergers out to redshifts zmerge ≈ 1. Because GWs are inefficient at shrinking the binary orbit, some of these BBH systems likely experienced long delay times τ between the formation of their progenitor stars at zform and their GW merger at zmerge. In fact, the distribution of delay times predicted by isolated binary evolution resembles a power law p(τ) ∝ τ ατ with slope −1 ≲ ατ ≲ −0.35 and a minimum delay time of τmin = 10 Myr . We use these predicted delay time distributions to infer the formation redshifts of the ∼70 BBH events reported in the third GW transient catalog GWTC-3 and the formation rate of BBH progenitors. For our default α τ = -1 delay time distribution, we find that GWTC-3 contains at least one system (with 90% credibility) that formed earlier than zform > 4.4. Comparing our inferred BBH progenitor formation rate to the star formation rate, we find that at z form = 4, the number of BBH progenitor systems formed per stellar mass was 6.4+9.4-5.5 × 10−6 M ⊙− 1 and this yield dropped to 0.134+ 1.6-0.127 × 10−6 M⊙−1 by zform = 0. We discuss implications of this measurement for the cosmic metallicity evolution, finding that for typical assumptions about the metallicity dependence of the BBH yield, the average metallicity at zform = 4 was 〈 log 10 (Z/Z⊙ ) 〉= −0 .3+0.3-0.4 , although the inferred metallicity can vary by a factor of ≈3 for different assumptions about the BBH yield. Our results highlight the promise of current GW observatories to probe high-redshift star formation.</p
A comparison of computerized MMPI reports of French-English bilingual Canadian students.
No full textDept. of Psychology. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1973 .F46. Source: Masters Abstracts International, Volume: 40-07, page: . Thesis (M.A.)--University of Windsor (Canada), 1973
Histoire de l'École de Chimie de Mulhouse publiée à l'occasion du 25e anniversaire d'enseignement de M. le Dr. Émilio Noelting, 1880-1905.
No full textMode of access: Internet
A Standard Siren Measurement of the Hubble Constant from GW170817 without the Electromagnetic Counterpart
No full textWe perform a statistical standard siren analysis of GW170817. Our analysis does not utilize knowledge of NGC 4993 as the unique host galaxy of the optical counterpart to GW170817. Instead, we consider each galaxy within the GW170817 localization region as a potential host; combining the redshifts from all of the galaxies with the distance estimate from GW170817 provides an estimate of the Hubble constant, H_0. Considering all galaxies brighter than 0.626L*_B as equally likely to host a binary neutron star merger, we find H_0 – 77^(+37)_(-18) km s^(−1) Mpc^(−1) (maximum a posteriori and 68.3% highest density posterior interval; assuming a flat H_0 prior in the range [10, 220] km s^(−1) Mpc^(−1)). We explore the dependence of our results on the thresholds by which galaxies are included in our sample, and we show that weighting the host galaxies by stellar mass or star formation rate provides entirely consistent results with potentially tighter constraints. By applying the method to simulated gravitational-wave events and a realistic galaxy catalog we show that, because of the small localization volume, this statistical standard siren analysis of GW170817 provides an unusually informative (top 10%) constraint. Under optimistic assumptions for galaxy completeness and redshift uncertainty, we find that dark binary neutron star measurements of H_0 will converge as 40%/√(N), where N is the number of sources. While these statistical estimates are inferior to the value from the counterpart standard siren measurement utilizing NGC 4993 as the unique host, H_0 = 76^(+19)_(-13) km s^(−1) Mpc^(−1) (determined from the same publicly available data), our analysis is a proof-of-principle demonstration of the statistical approach first proposed by Bernard Schutz over 30 yr ago
Positioning self-control in a dual-systems framework
No full textIn this chapter we will discuss different perspectives on how self-control can be positioned in dual-system theories of information processing and behavior. Self-control has been defined as one’s capacity or ability to overrule one’s inner, impulsive responses, as well as to interrupt undesired behavioral tendencies (Baumeister, Bratslavsky, Muraven, & Tice, 1998; Tangney, Baumeister, & Boone, 2004). However, this definition lacks an essential aspect, and a necessary component of self-control: the notion that a long-term goal is involved that makes it ‘worth’ inhibiting those impulses that can be rewarding in the shorter term (Carver & Scheier, 1981; De Ridder, Lensvelt-Mulders, Finkenauer, Stok, & Baumeister, 2012). Recently, definitions of self-control therefore also include the ability to resolve self-control dilemmas (De Ridder, Kroese, Gillebaart, & Adriaanse, 2016; Fujita, 2011; Myrseth & Fishbach, 2009), and different strategies for handling self-control dilemmas have been a novel self-control research focus (Ent, Baumeister, & Tice, 2015; Gillebaart, Schneider, & De Ridder, 2015; Myrseth & Fishbach, 2009). Self-control dilemmas are situations in which competing behavioral tendencies exist, fostering a (response) conflict that has to be resolved by acting on one of these tendencies
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