1,565 research outputs found

    The status of the Worcester Negro

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    Challenged by the fact that many of the Negroes of Worcester do on seem to be occupying the places for which they are trained economically or culturally, this study was entered upon in an attempt to discover the true status of the Worcester Negro, to describe the problems which underlie the limitation of his activities, and to define a program whereby he may be led into a more complete realization of his personality, and, unhampered, make his full contribution to the community life of which he is a part. To this end a survey has been made. This survey, of necessity, deals largely with the material side of the Negro\u27s life --his economic status, and, to some degree, his cultural status. The economic and cultural sides of life are inextricably interwoven and the relationship of cause and effect works in both directions. These cause and effect relations are considered. The more subtle and, in many cases, more important psychological factors are dealt with to a very limited degree, for an infinite amount of research needs to be done in this field before any dogmatic assertions may be made

    Alien Registration- Adams, Ella L. (Presque Isle, Aroostook County)

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    https://digitalmaine.com/alien_docs/34325/thumbnail.jp

    Alien Registration- Craig, Ella L. (Mapleton, Aroostook County)

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    https://digitalmaine.com/alien_docs/34067/thumbnail.jp

    Ernest Hemingway\u27s Attitude Toward Women as Revealed in Selected Novels

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    The problem is to show, in selected novels, that Hemingway\u27s negative attitude toward women is reflected in the creation of female characters who are selfish, corrupt, unchaste, destructive, fickle, irreligious, amoral, possessive, jealous, incontinent, and/or submissive. For the purpose of this study, the writer will use three novels by Ernest Hemingway. There will be no attempt to treat any other of Hemingway\u27s characters or theories other than those dealing with a negative attitude toward women, nor will any work other than the following be considered: The Sun Also Rises A Farewell to Arms For Whom the Bell Toll

    Mathematical Epidemiology Goes to College

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    Every year waves of illnesses sweep through college campuses. This seems a natural result of sleep-deprived college students living, working, and playing together. Such outbreaks suggest questions: How many people will become infected? How can illnesses be contained? And crucially: How is mathematics involved? Mathematical epidemiology is the study of modeling diseases, often using compartmental models. We can use such models to learn from past outbreaks and investigate theoretical future outbreaks. In this article we present models that were inspired by two real-life outbreaks at a small residential college campus: H1N1 influenza in 2009 and, surprisingly, mumps in 2016

    Postcard: #30 Branding Calves on the Plains

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    This black and white photographic postcard features cowboys branding cattle. A man on the left has a cow tied with rope and is wrestling it to the ground. Five men surround a cow that is on the ground. The man in the foreground is branding the cow with a branding iron. A herd of cattle are in the background. Written text is at the bottom of the card. Handwriting is on the back of the card. (Note indicates the photo was taken by Liberal, Kansas photographer Hal Reid.)https://scholars.fhsu.edu/tj_postcards/2342/thumbnail.jp

    Pump-Enhanced Continuous-Wave Magnetometry using Nitrogen-Vacancy Ensembles

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    Ensembles of nitrogen-vacancy centers in diamond are a highly promising platform for high-sensitivity magnetometry, whose efficacy is often based on efficiently generating and monitoring magnetic-field dependent infrared fluorescence. Here we report on an increased sensing efficiency with the use of a 532-nm resonant confocal cavity and a microwave resonator antenna for measuring the local magnetic noise density using the intrinsic nitrogen-vacancy concentration of a chemical-vapor deposited single-crystal diamond. We measure a near-shot-noise-limited magnetic noise floor of 200 pT/Hz\sqrt{\text{Hz}} spanning a bandwidth up to 159 Hz, and an extracted sensitivity of approximately 3 nT/Hz\sqrt{\text{Hz}}, with further enhancement limited by the noise floor of the lock-in amplifier and the laser damage threshold of the optical components. Exploration of the microwave and optical pump-rate parameter space demonstrates a linewidth-narrowing regime reached by virtue of using the optical cavity, allowing an enhanced sensitivity to be achieved, despite an unoptimized collection efficiency of <2 %, and a low nitrogen-vacancy concentration of about 0.2 ppb.Comment: 10 pages and 5 figure
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