5,324 research outputs found
Resonances in non-axisymmetric gravitational potentials
No full textInternational audienceWe study sectoral resonances of the form jκ = m(n − Ω) around a non-axisymmetric body with spin rate Ω, where κ and n are the epicyclic frequency and mean motion of a particle, respectively, where j > 0 and m ( 0) are integers, j being the resonance order. This describes n/Ω ∼ m/(m − j) resonances inside and outside the corotation radius, as well as prograde and retrograde resonances. Results are: (1) the kinematics of a periodic orbit depends only on (m , j), the irreducible (relatively prime) version of (m, j). In a rotating frame, the periodic orbit has j braids, |m | identical sectors and |m |(j − 1) self-crossing points; (2) thus, Lindblad resonances (with j = 1) are free of self-crossing points; (3) resonances with same j and opposite m have the same kinematics, and are called twins; (4) the order of a resonance at a given n/Ω depends on the symmetry of the potential. A potential that is invariant under a 2π/k-rotation 2 Sicardy creates only resonances with m multiple of k; (5) resonances with same j and opposite m have the same kinematics and same dynamics, and are called true twins; (6) A retrograde resonance (n/Ω 0); (7) the resonance strengths can be calculated in a compact form with the classical operators used in the case of a perturbing satellite. Applications to Chariklo and Haumea are made
Introducing “La fabrique du droit”. A Conversation with Bruno Latour
No full textBruno Latour talks with Paolo Landri about his book on the Conseil d'Etat (La Fabrique du droit). The conversation was held in 2006 at the time of the Italian translation of the book and illustrates the research project and the difficulties the author had in the field. At the same time, it clarifies the trajectories of Bruno Latour's work and theoretical framework of his program of study with respect to sociology, anthropology, and philosophy of law. The conversation helps to understand the open-ended character of Bruno Latour's research and reflection including STS as well as sociological, anthropological and philosophical themes
Capture into Mean-Motion Resonances for Exoplanetary Systems
No full textInternational audienceMany bodies in the Solar System and some exo-planets are close to or captured in Mean Motion Resonances (MMR).Capture into such resonances has been investigated by many authors. Indeed, the Hamiltonian equations of motion in presence of migration are given by Sicardy and Dubois Cel. Mech. & Dyn. Astron. , 86, 321-350 (2003). Fleming and Hamilton, Icarus 148, 479-493 (2000), studied the problem in a less generic context.In these two papers, the authors studied the problem of 1:1 corotation (Lagrange points L4 and L5), rather than m 1:m corotations (El Moutamid et al, Cel. Mech. & Dyn. Astron, 118, 235-252 (2014)).We will present a generic way to analyze details of a successful (or not) capture in the case of an oblate (or not) central body in the context of Restricted Three Body Problem (RTBP) and a more General Three Body Problem in the context of known statistics for captured exoplanets (candidates) observed by Kepler
Author Correction: Collection of the digital data from the neurological examination.
No full textIn this article, the corresponding author was inadvertently designated only to “Bruno Kusznir Vitturi” but it should have been “Bruno Kusznir Vitturi” and “Walter Maetzler”. The original article has been corrected
On Bruno Schulz’s Bookplates
No full textThe Polish version of the article was published in Roczniki Humanistyczne vol. 64, issue 1 (2016).
The article enters into a dialogue with the interpretation of Bruno Schulz’s bookplates made by Władysław Panas in his book Bruno od Mesjasza (Bruno of the Messiah) (Lublin 2001). An attempt to understand them in a different (less holistic) way leads the author of the article to the conclusion that in Schulz’s plates the first veiled variant of the mythical Book may be seen—of the fundamental motif of Bruno Schulz’s later literary work
Jordan "Bruno" Gegenhuber '16 Publishes First-Author Research
No full textJordan "Bruno" Gegenhuber '16 had first-author research, "Gene regulation by gonadal hormone receptors underlies brain sex differences," published in nature magazine on May 4, 2022.Jordan "Bruno" Gegenhuber '16 had first-author research, "Gene regulation by gonadal hormone receptors underlies brain sex differences," published in Nature magazine on May 4, 2022.
Sex hormones play a central role in shaping behavior throughout the animal kingdom, and this study maps where the receptor for estrogen binds to DNA in neurons that regulate rodent social interactions. The findings reveal that estrogen establishes lasting sex differences in gene expression and neuroanatomy during brain development, and identifies hundreds of genes that may mediate estrogen's effects on behavior and disease.
Gegenhuber earned a PhD from the Cold Springs Harbor Laboratory School of Biological Sciences in Long Island, N.Y.. in May 2022. His field of research is in neuroscience, and he has accepted a postdoctoral research position at Harvard Medical Center in Boston, Mass. He also holds the honor of being the Pacific Class of 2016 Valedictorian
Bruno Schulz i polityka
No full textBruno Schulz and politicsThe article discusses Bruno Schulz’s attitude toward politics. It is well known that the author of The Cinnamon Shops was a nonpolitical man. This was the reason for some fi erce attacks against his prose conducted by politically engaged literary critics in the interwar Poland. The author mentions these attacks but he also analyzes Schulz’s less known essays about Piłsudski, Aragon and Brecht, and the way Schulz pictured politics in his prose. It seems that a political dictionary of the author of The Street of Crocodiles comprised terms from different political ideologies; he alluded to Marx, anarchism and Brzozowski. At the end of his article the author discusses the question whether Schulz’s nonpolitical attitude could be compared to the so called conservative revolution in Germany after World War I
Bruno Schulz i polityka
No full textBruno Schulz and politicsThe article discusses Bruno Schulz’s attitude toward politics. It is well known that the author of The Cinnamon Shops was a nonpolitical man. This was the reason for some fi erce attacks against his prose conducted by politically engaged literary critics in the interwar Poland. The author mentions these attacks but he also analyzes Schulz’s less known essays about Piłsudski, Aragon and Brecht, and the way Schulz pictured politics in his prose. It seems that a political dictionary of the author of The Street of Crocodiles comprised terms from different political ideologies; he alluded to Marx, anarchism and Brzozowski. At the end of his article the author discusses the question whether Schulz’s nonpolitical attitude could be compared to the so called conservative revolution in Germany after World War I
Notes on Bruno Schweizer, December 1937
No full textA document discussing Bruno Schweizer, focusing on his involvement in the Housigau Homeland Association and its related magazine as well as his lack of engagement with the Nazi party. The comments indicate that he did not give the Nazi salute or make donations to the party or its affiliated organizations. Includes handwritten comments by Wolfram Sievers and Walther Wüst.https://digitalcommons.ursinus.edu/ahnenerbe_schweizer/1003/thumbnail.jp
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