2,073 research outputs found

    Central or Local Control: The Case for an Archival Partnership

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    Formal retraction or literary repentance in the Elizabethan Age.

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    Before entering upon a discussion of those writers of the Elizabethan Age whose works present specific instances of Personal Retractation, let us turn our attention to the problem in general and try to find out why writers of this age and of earlier times felt it necessary to repent of their literary efforts. Some critics may say that retractation was merely a literary convention; and why bother about its beginnings, sources, et cetera? Others may have the opinion that it was a personal trait, only a means of satisfying some peculiar whim or fancy of the author. Some may go even so far as to say it was one of the many tricks or devices which an author used in the attempt to get his works before the reading public. Anyone, or all of these theories, may be true. We cannot say specifically that any one cause led to this old custom of confession in literature. To do so would mean that we are taking a narrow view of the subject. So in this study let us look not for one common cause, but for a combination of causes and interests which led writers of olden times to plainly confess the errors of their ways and to repent of their literary endeavors

    Brief Cognitive Screening Tools for Primary Care Practice

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    Early detection and diagnosis of Alzheimer’s disease and other cognitive impairment presents as a critical issue facing primary and specialty care providers in Washington State. In order to address the gaps and challenges faced by providers, the Dementia Action Collaborative offers the current paper to provide information and guidance around early detection and diagnosis of memory loss and dementia, including Alzheimer’s disease. At the conclusion of this paper, providers should be able to identify indications and opportunities for detection, appropriate tools, and care pathways for individuals and families affected by cognitive impairment and dementia

    Supersonic transport lubrication system investigation Third semiannual report, 1 Nov. 1965 - 1 May 1966

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    Ball bearing and bellows face seals for supersonic aircraft gas turbine engine mainshafts tested with selected lubricants using oil-mist and jet lubrication system

    A three solar cell system based on a self-supporting, transparent AlGaAs top solar cell

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    Development of a three solar cell stack can lead to practical efficiencies greater than 30 percent (1x,AM0). A theoretical efficiency limitation of 43.7 percent at AM0 and one sun is predicted by this model. Including expected losses, a practical system efficiency of 36.8 percent is anticipated. These calculations are based on a 1.93eV/1.43eV/0.89eV energy band gap combination. AlGaAs/GaAs/GaInAsP materials can be used with a six-terminal wiring configuration. The key issues for multijunction solar cells are the top and middle solar cell performance and the sub-bandgap transparency. AstroPower has developed a technique to fabricate AlGaAs solar cells on rugged, self-supporting, transparent AlGaAs substrates. Top solar cell efficiencies greater than 11 percent AM0 have been achieved. State-of-the-art GaAs or InP devices will be used for the middle solar cell. GaInAsP will be used to fabricate the bottom solar cell. This material is lattice-matched to InP and offers a wide range of bandgaps for optimization of the three solar cell stack. Liquid phase epitaxy is being used to grow the quaternary material. Initial solar cells have shown open-circuit voltages of 462 mV for a bandgap of 0.92eV. Design rules for the multijunction three solar cell stack are discussed. The progress in the development of the self-supporting AlGaAs top solar cell and the GaInAsP bottom solar cell is presented

    Social Media in a Subjective-science Mode: The “Facebook Likes” Study Reconfigured with Self-reference

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    A Cambridge University study of more than 58,000 users of the popular social medium Facebook examined the extent to which the Facebook "Likes" button predicted behaviors and attributes of a diverse nature (IQ, sexual identity, political and popular-culture preferences, religious affiliation, and the like). Despite revealing several intriguing and statistically significant relationships, the research sheds scant light on the nature of the subjectivity at play. In a Q-methodological study of a sample of subjectively communicated responses to the Cambridge research, three versions of the subjective interface between the users of Facebook and the social medium are reported.  Implications for studying the social-psychological aspects of social media from the methodological principle of self-reflection are discussed

    Changes in three-dimensional flow structure at a river confluence with changes in momentum ratio

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    River hydrodynamicsTurbulent open channel flow and transport phenomen

    Searching for z~7.7 Lyman Alpha Emitters in the COSMOS Field with NEWFIRM

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    The study of Ly-alpha emission in the high-redshift universe is a useful probe of the epoch of reionization, as the Ly-alpha line should be attenuated by the intergalactic medium (IGM) at low to moderate neutral hydrogen fractions. Here we present the results of a deep and wide imaging search for Ly-alpha emitters in the COSMOS field. We have used two ultra-narrowband filters (filter width of ~8-9 {\deg}A) on the NEWFIRM camera, installed on the Mayall 4m telescope at Kitt Peak National Observatory, in order to isolate Ly-alpha emitters at z = 7.7; such ultra-narrowband imaging searches have proved to be excellent at detecting Ly-alpha emitters. We found 5-sigma detections of four candidate Ly-alpha emitters in a survey volume of 2.8 x 10^4 Mpc^3 (total survey area ~760 arcmin^2). Each candidate has a line flux greater than 8 x 10^-18 erg s^-1 cm^-2. Using these results to construct a luminosity function and comparing to previously established Ly-alpha luminosity functions at z = 5.7 and z = 6.5, we find no conclusive evidence for evolution of the luminosity function between z = 5.7 and z = 7.7. Statistical Monte Carlo simulations suggest that half of these candidates are real z = 7.7 targets, and spectroscopic follow-up will be required to verify the redshift of these candidates. However, our results are consistent with no strong evolution in the neutral hydrogen fraction of the IGM between z = 5.7 and z = 7.7, even if only one or two of the z = 7.7 candidates are spectroscopically confirmed.Comment: 29 pages, 5 figures, accepted to ApJ (12/11
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