Results 21 to 30 of about 3,486,992 (280)

Effective temperature, Hawking radiation and quasinormal modes [PDF]

open access: yes, 2012
Parikh and Wilczek have shown that Hawking radiation's spectrum cannot be strictly thermal. Such a non-strictly thermal character implies that the spectrum is also not strictly continuous and thus generates a natural correspondence between Hawking ...
Corda, Christian
core   +1 more source

Afro-Swedish and Ojibwe-Canadian Trauma Life Writings: Storms from Paradise, Reasons for Walking, and the Opening of Planetary Circles of Conversation

open access: yesScandinavian-Canadian Studies, 2023
Following Spivak’s model of “crossing borders” and “planetarity”, this article compares two trauma life writings: Wab Kinew’s The Reason You Walk and Johannes Anyuru’s En storm kom från paradiset [A Storm Blew in from Paradise].
Juliane Egerer
doaj   +1 more source

Bibliometric Analysis of Black Soil Protection from the Perspective of Land-Use Monitoring

open access: yesLand, 2022
Land use affects ecosystem stability and agricultural ecological security in black soil regions. Additional attention is required regarding the impact of different land-use patterns on black soil.
Lei Wang   +8 more
doaj   +1 more source

Exact black hole solutions in shift symmetric scalar-tensor theories [PDF]

open access: yes, 2014
We derive a variety of exact black hole solutions in a subclass of Horndeski's scalar-tensor theory possessing shift symmetry, $\phi\to\phi+c$, and reflection symmetry, $\phi\to-\phi$. The theory admits two arbitrary functions of $X:=-(\partial\phi)^2/2$,
Kobayashi, Tsutomu, Tanahashi, Norihiro
core   +1 more source

The European Union, the Enlargement and the South-Eastern Europe [PDF]

open access: yesRomanian Journal of European Affairs, 2005
Ιn 1989, the countries of South-eastern Europe and central Europe promoted their integration of military, political and economic collaboration and developed narrow relations with the European Union (Ε.U). Thus resulted the new enlargement of EU, in order
Malkidis Theofanis
doaj  

Negra, afro-brasileira, afrodescendente: a literatura de Zeli de Oliveira Barbosa

open access: yesConfluenze, 2023
The aim of this paper is discussing some polemical points when it comes to the Brazilian literature written by afro-Brazilian writers. What is the most adequate category to use for talking about these texts: afro-Brazilian literature?
Anselmo Peres Alós
doaj   +1 more source

Dyonic Kerr-Newman black holes, complex scalar field and Cosmic Censorship

open access: yes, 2010
We construct a gedanken experiment, in which a weak wave packet of the complex massive scalar field interacts with a four-parameter (mass, angular momentum, electric and magnetic charges) Kerr-Newman black hole.
B. Jensen   +30 more
core   +1 more source

Port Rupture(s) and Cross-Racial Kinships in Dionne Brand and Lee Maracle

open access: yesCanada and Beyond, 2019
 This paper examines Lee Maracle’s Talking to the Diaspora and Dionne Brand’s A Map to the Door of No Returnfor their respective responses to the Komagata Maru in 1914 and to the Chinese migrants denied entry in 1999. These literary moments are points of
Tavleen Purewal
doaj   +1 more source

Radial fall of a test particle onto an evaporating black hole [PDF]

open access: yes, 2005
A test particle falling into a classical black hole crosses the event horizon and ends up in the singularity within finite eigentime. In the `more realistic' case of a `classical' evaporating black hole, an observer falling onto a black hole observes a ...
Andreas Aste   +4 more
core   +3 more sources

Freedom dreaming with Black Canadian mothers

open access: yesFrontiers in Education, 2022
A burgeoning body of literature explores the educational experiences of Black Canadian students. Such literature reveals Black students as disproportionately impacted by academic underachievement, discipline policies, and special education placement ...
Stephanie Fearon
doaj   +1 more source

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