25,890 research outputs found
Lego Robotics Challenge display
No full textPeter Kellett, Director of Information Services at Grace Lutheran College and Director of FIRST® LEGO® League Brisbane Bayside will present the Lego Robotics Challenge
Quantum gravity and the renormalization group
No full textThis work seeks to address the problem of quantum gravity from the point of view ofthe renormalisation group. After the introduction of the needed concepts, it is seenthat a problem of quantum gravity that stems from the “conformal factor instability”,if the consequences are fully explored, can open the door to a rich phenomenology. Inparticular, it is seen that toric universes can be constrained to be highly symmetricwhen sufficiently small, which is potentially applicable to the initial conditions forinflation. The idea of regularising gravity via a supermanifold is covered, followingsimilar treatments of gauge theory in order to preserve the symmetry (diffeomorphisminvariance) at all points along the renormalization group flow. Furthermore, themachinery provided by the conformal factor instability provides us with a genuinelyperturbative theory of quantum gravity, which can be calculated to have the sameeffective action as one might expect, but the understanding of the QFT is verydifferent, with the Gaussian fixed point being defined “off space-time”
Parisi-Sourlas supergravity
No full textA manifestly diffeomorphism invariant exact renormalization group requires extra diffeo-morphism invariant ultraviolet regularisation at some effective cutoff scale Λ. This motivatesconstruction of a ‘Parisi-Sourlas’ supergravity, in analogy with the gauge theory case, where thesuperpartner fields have the wrong spin-statistics such that they can become Pauli-Villars regu-lator fields after spontaneous symmetry breaking. We show that in contrast to gauge theory, thefree theory around flat space is already non-trivial and in a sense already displays some spon-taneous symmetry breaking. We show that the fluctuating fields form multiplets whose massmatrices imply that the fields propagate into each other not only with the expected 1/p2butalso through propagators with improved ultraviolet properties, namely 1/p4and 1/p6, despitethe fact that the action contains a maximum of two space-time derivatives
Author Peter FitzSimons speaking at the National Library of Australia, Canberra, 13 November 2012 /
No full textTitle from acquisitions documentation.; Part of the collection: Portraits of author Peter FitzSimons speaking at the National Library of Australia, Canberra, 13 November 2012.; Acquired in digital format; access copy available online.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
Felipe Hernández, Peter Kellett and Lea K. Allen (eds.) (2012): Rethinking the Informal City
Full text linkThis review discusses the book 'Rethinking the informal City. Critical perspectives from Latin America', edited by Felipe Hernández, Peter Kellett and Lea K. Allen from a political science perspective considering broader research on formality, informality and city governance in Latin America
Moral Good, the Beatific Vision, and God’s Kingdom Writings by Germain Grisez and Peter Ryan, S.J.. Edited by Peter J. Weigel
No full textFor close to half a century, the work of Germain Grisez has been highly influential, and his writings continue to receive considerable attention from philosophers and theologians of diverse viewpoints. His co-author for this work is the professor and noted moral theologian Fr. Peter Ryan, S.J., currently the executive director of the Secretariat of Doctrine and Canonical Affairs of the United States Conference of Catholic Bishops (USCCB). These two eminent scholars explore fundamental questions about Christian eschatology, moral theory, the purpose of human life, and the promise of human fulfilment. The authors examine Christian teaching on the final destiny of persons, investigating the meaning of God's kingdom, the hope of the beatific vision, and the centrality of moral goodness and divine grace in one's final end. This work is an ideal source for students, scholars, ministers and lay persons interested in basic questions of Christian theology, the philosophy of religion, ethical theory, and Catholic doctrin
Murder on the mountain: author talk with Peter J. Wosh
No full textAuthor talk by Peter J. Wosh on May 5th, 2022, on his book, "Murder on the Mountain: crime, passion, and punishment in gilded age New Jersey.
Lunchtime Talk with Author and Attorney Peter Godwin
No full textAuthor and attorney Peter Godwin gave a lunchtime talk about the topics discussed in his book, The Fear, which focuses on the human rights situation in Zimbabwe under the rule of Robert Mugabe
An essay about the Francis Paudras Collection on Bud Powell by Peter Pullman
No full textThis is an essay about the Francis Paudras Collection on Bud Powell written by Peter Pullman, a jazz scholar and author of Wail: The Life of Bud Powell (Brooklyn: Bop Changes, 2012).One image file (pdf)This project was supported by a Recordings at Risk grant from the Council on Library and Information Resources (CLIR). The grant program is made possible by funding from The Andrew W. Mellon Foundation
Professor Peter Singer speaking at the National Press Club Canberra, 11 February 2009 [picture] /
No full textTitle devised by cataloguer based on information from acquisitions documentation.; Part of the collection: Humanitarian author Professor Peter Singer at the National Press Club, Canberra, 11 February 2009.; Acquired in digital format; access copy available online.; Mode of access: Internet via World Wide Web.; Photographed by a staff member of the National Library of Australia, 2009
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