1,721,122 research outputs found
Short-term forecasting of solar energetic ions on board LISA
No full textSolar energetic particles (SEPs) pose a hazard to manned and unmanned space missions. Moreover, in LISA (Laser Interferometer Space Antenna) and its precursor mission LISA Pathfinder (LISA-PF) the free-fall test-masses are charged by galactic and solar energetic particles. This process generates spurious forces on the test masses which appears as significant levels of noise in the experiments. It was shown that relativistic solar electron detection can be used for up-to-one-hour forecasting of incoming energetic ions at 1 AU. Contemporary observations of solar electrons, protons and helium nuclei on board LISA will allow us to forecast and investigate the characteristics of SEPs over small steps in longitude
Nella Larsen e Alice Walker: due classici americani ritrovati.
No full textA comparative, critically updated review of the new Italian translations of Nella Larsen's Passing and Alice Walker's The Third Life of Grange Copeland
Riprodurre la rivoluzione. Rappresentazioni narrative di Toussaint Louverture prima della guerra civile
No full textThe essay focuses on a recently rediscovered text, William J. Wilson’s “The Afric-American Picture Gallery” (1859). It examines how antebellum narrative representations of the Haitian Revolution placed it on a continuum with other forms of resistance in the United States in order to challenge prevailing racist ontologies postulating black docility. The analysis of the portraits of Toussaint L’Ouverture described in Frank J. Webb’s The Garies and Their Friends (1853) and Wilson’s “The Afric-American Picture Gallery” (1859) reveals how such descriptions promoted transnational emancipation projects and trained readers to question the politics of historical representation
"Historicizing (the New) Jim Crow: Notes on Recovering Early African American Speculative Fiction"
No full textThe essay recovers and analyzes critically neglected works of nineteenth- and early twentieth-century speculative fiction, offering new insight into their aesthetic and representational complexity
African American Novels and the New Slavery in the New South
No full textThe essay offers a new literary critical approach to early twentieth-century American novels that challenged the prevailing myth of the “New South” by exposing its analogies with slavery. It focuses on two complex and experimental novels published in 1905: Sutton E. Griggs’s The Hindered Hand and Charles W. Chesnutt’s The Colonel’s Dream. The essay examines their oft-underestimated impact on contemporaneous best-selling novelists like Thomas Dixon, Jr. and also foregrounds how the silencing pressures of the prevailing culture of Jim Crow affected the publication history of coeval works by Mark Twain and Upton Sincair
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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