11,103 research outputs found
On Quillen's calculation of graded -theory
We adapt Quillen's calculation of graded K-groups of
Z-graded rings with support in N to graded
K-theory, allowing gradings in a product Z \times G with G an arbitrary
group. This in turn allows us to use inductions and calculate graded K-theory
of Z^m-graded rings. Here Z is the ring of integers and N positive natural
numbers
Speaking of Liturgy: Education and Fonnation through and for Worship
(Excerpt)
On Palm Sunday eighteen days ago I paid a visit to the country of my youth. I was visiting my parents on the East Coast and so on that day I worshiped with them at their church, First Presbyterian. I\u27ve never belonged to that particular congregation, but the denominational ethos was familiar. Visiting my family of origin, I had reentered my denomination of origin as well
It\u27s about Time: Practices of Rest and Worship in Church and Culture
(Excerpt)
At this institute on Worship, Culture, and Catholicity: Remembering the Future I may focus a little more on culture than have the other speakers, a choice perhaps appropriate for a church historian and student of American religious life. Let me begin, therefore, with a statement from an anthropologist: Time talks, says Edward T. Hall in his book The Silent Language. It speaks more plainly than words. The message it conveys comes through loud and clear. Because it is manipulated less consciously, it is subject to less distortion than the spoken language. It can shout the truth where words lie
A Tale of Three Northern Manhattan Communities: Case Studies of Political Empowerment in the Planning and Developing Process
This article reviews three development proposals in Northern Manhattan communities, how community boards responded to those proposals, and how the responses affected the outcome of each development. The article begins with a broad overview of the history of community boards\u27 role in urban planning in New York City. It finds that boards have become increasingly influential in new development plans, empowering the communities they represent. The Article goes on to analyze three recent proposals in turn (an expansion of Columbia University in Morningside Heights, a residential development in Central Harlem, and a comprehensive rezoning of East Harlem) according to zoning, community reaction, and result. It concludes that by proactively pushing for rezoning and hiring Civitas Citizens, Inc., an urban design, community advocacy organization to oversee a rezoning plan, the community board of East Harlem was able to take control of preserving the character of its neighborhood
Smoke and Shadows: Rendering and Light Interaction of Smoke in Real-Time Rendered Virtual Environments
Realism in computer graphics depends upon digitally representing what we see in the world with careful attention to detail, which usually requires a high degree of complexity in modelling the scene. The inevitable trade-off between realism and performance means that new techniques that aim to improve the visual fidelity of a scene must do so without compromising the real-time rendering performance. We describe and discuss a simple method for realistically casting shadows from an opaque solid object through a GPU (graphics processing unit) based particle system representing natural phenomena, such as smoke
A gas flow indicator for portable life support systems
A three-part program was conducted to develop a gas flow indicator (GFI) to monitor ventilation flow in a portable life support system. The first program phase identified concepts which could potentially meet the GFI requirements. In the second phase, a working breadboard GFI, based on the concept of a pressure sensing diaphragm-aneroid assembly connected to a venturi, was constructed and tested. Extensive testing of the breadboard GFI indicated that the design would meet all NASA requirements including eliminating problems experienced with the ventilation flow sensor used in the Apollo program. In the third program phase, an optimized GFI was designed by utilizing test data obtained on the breadboard unit. A prototype unit was constructed using prototype materials and fabrication techniques, and performance tests indicated that the prototype GFI met or exceeded all requirements
Can Momentum Correlations Proof Kinetic Equilibration in Heavy Ion Collisions at 160 AGeV?
We perform an event-by-event analysis of the transverse momentum distribution
of final state particles in central Pb(160AGeV)+Pb collisions within a
microscopic non-equilibrium transport model (UrQMD). Strong influence of
rescattering is found. The extracted momentum distributions show less
fluctuations in A+A collisions than in p+p reactions. This is in contrast to
simplified p+p extrapolations and random walk models.Comment: 9 pages, 3 eps figures, submitted to Phys. Lett.
Azimuthal correlations of pions in relativistic heavy ion collisions at 1 GeV/nucl.
Triple differential cross sections of pions in heavy ion collisions at 1
GeV/nucl. are studied with the IQMD model. After discussing general properties
of resonance and pion production we focus on azimuthal correlations:
At projectile- and target-rapidities we observe an anticorrelation in the
in-plane transverse momentum between pions and protons. At c.m.-rapidity,
however, we find that high pions are being preferentially emitted
perpendicular to the event-plane. We investigate the causes of those
correlations and their sensitivity on the density and momentum dependence of
the real and imaginary part of the nucleon and pion optical potential.Comment: 40 pages, 18 eps-figures, uses psfig.sty; complete postscript file
available at ftp://th.physik.uni-frankfurt.de/pub/bass/GSI-preprint_95-7.ps.
Marshall University Summer Music Camp Presents a Faculty Recital
https://mds.marshall.edu/music_perf/1123/thumbnail.jp
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