Digital Commons Network^™

Inspiraling Black Holes: The Close Limit, Gaurav Khanna, John Baker, Reinaldo J. Gleiser, Pablo Laguna, Carlos O. Nicasio, Hans Peter Nollert, Richard Price, Jorge Pullin

Faculty Publications

We calculate an estimate of the gravitational radiation emitted when two equal mass black holes coalesce at the end of their binary inspiral, using several approximations based on considering the holes close to each other. A shortcoming of our method is that it is limited to models forming final holes with slow rotation, but our results clearly suggest a trend for larger angular momenta. We find that about 1% of the mass energy of the pair will emerge as gravitational waves during the final stages of the collision and that a negligible fraction of the angular momentum will be radiated. …

Collision Of Boosted Black Holes: Second Order Close Limit Calculations, Carlos O. Nicasio, Reinaldo J. Gleiser, Richard H. Price, Jorge Pullin

Faculty Publications

We study the head-on collision of black holes starting from unsymmetrized, Brill-Lindquist type data for black holes with non-vanishing initial linear momentum. Evolution of the initial data is carried out with the “close limit approximation,” in which small initial separation and momentum are assumed, and second-order perturbation theory is used. We find agreement that is remarkably good, and that in some ways improves with increasing momentum. This work extends a previous study in which second order perturbation calculations were used for momentarily stationary initial data, and another study in which linearized perturbation theory was used for initially moving holes. In …

An Overview Of Canonical Quantum Gravity, Jorge Pullin

Faculty Publications

This paper presents a brief review of current results on the canonical quantization of general relativity using Ashtekar's variables and loop quantization.

The Close Limit Of Colliding Black Holes: An Update, Jorge Pullin

Faculty Publications

This is the writeup of the talk I gave at the Yukawa International Symposium at Kyoto, Japan on June 29, 1999. The talk summarizes the present status of the close limit approximation for colliding black holes.

Role Of Negative Ion Resonances In Electron Scattering From Atoms And Molecules, S. J. Buckman, D. T. Alle, M. J. Brennan, P. D. Burrow, J. C. Gibson, R. J. Gulley, M. Jacka, D. S. Newman, A. R.P. Rau, J. P. Sullivan, K. W. Trantham D

Faculty Publications

Transient negative ions (resonances) formed during the collision of an electron with an atom or molecule have been extensively studied for over thirty years. The continued interest in these states, both experimentally and theoretically, stems from the profound effects that they can have on electron scattering cross sections and the role that electron-electron correlations play in their formation and quasi-stability. A selective discussion of examples of such resonances, involving one, two and three excited electrons is given for a wide range of atomic and molecular systems. © CSIRO 1999.

Bird Communities In Two Types Of Anthropogenic Successional Vegetation In Central Amazonia, Sérgio Henrique Borges, Philip C. Stouffer

Faculty Publications

When primary forest in central Amazonia is cut and abandoned, the plant succession is dominated by Cecropia spp., whereas when it is cut and burned for pastures, the regrowth vegetation is dominated by Vismia spp. The bird communities of these two regrowth forest types were sampled at six sites (9-13 years old) using mist-nets and observations. Bird species richness was similar between the two forest types. Cecropia regrowth, however, was richer for strictly forest bird species than was Vismia regrowth. Mixed-flock species and ant-following birds were significantly more abundant in the Cecropia second growth, whereas nonforest insectivores and omnivores were …

Semiclassical Calculation Of Cumulative Reaction Probabilities, David J. Tannor, Sophya V. Garashchuk

Faculty Publications

Calculation of chemical reaction rates lies at the very core of theoretical chemistry. The essential dynamical quantity which determines the reaction rate is the energy-dependent cumulative reaction probability, N(E), whose Boltzmann average gives the thermal rate constant, k(T). Converged quantum mechanical calculations of N(E) remain a challenge even for three- and four-atom systems, and a longstanding goal of theoreticians has been to calculate N(E) accurately and efficiently using semiclassical methods. In this article we present a variety of methods for achieving this goal, by combining semiclassical initial value …

The Expressive Function Of Succession Law And The Merits Of Non-Marital Inclusion, E. Gary Spitko

Faculty Publications

Intestacy statutes seek to further donative freedom by effectuating the attributed intent of those who fail to execute a valid estate plan during life. One might reasonably hypothesize that gay men and lesbians, on the whole, differ from the non-gay majority with respect to their donative intent. The fundamental difference in romantic and affectional preferences between gay people and non-gay people is likely to produce such a disparate donative intent. Much anecdotal evidence and recent empirical evidence strongly support this hypothesis.

Article II of the Uniform Probate Code presently ignores the existence of gay men and lesbians, despite the drafters' …

Policy And Science: A Review Essay Of Wilson’S Consilience: The Unity Of Knowledge, Thomas E. Geu

Faculty Publications

No abstract provided.

Call Screening - Is It Really A Problem For Survey Research?, Michael W. Link, Robert W. Oldendick

Faculty Publications

No abstract provided.

In-House Live-Client Clinical Programs: Some Ethical Issues, James E. Moliterno

Faculty Publications

No abstract provided.

Bearing False Witness: The Clinton Impeachment And The Future Of Academic Freedom, Neal Devins

Faculty Publications

No abstract provided.

Who Should Be Entitled To Claim The New Education Credits?, Glenn E. Coven

Faculty Publications

Professor Coven believes that the education assistance provisions enacted in 1997, while long overdue, were ill-considered and poorly constructed. Focusing on what should have been the simple question of who is entitled to claim an education tax credit, this report illustrates the harm that inadequate drafting produces. While section 25A appeared to deny a credit to a dependent child, an unfair and unwise result, the proposed regulations allow parents to shift the credit to their children but only on the forfeiture of the deduction for the personal exemption. That rule, says Coven, imposes a harsh penalty on low and middle-income …

Patient Safety, Risk Reduction, And The Law, Larry I. Palmer

Faculty Publications

No abstract provided.

Defending Truth, Cynthia V. Ward, Peter A. Alces

Faculty Publications

No abstract provided.

When Y2k Causes "Economic Loss" To "Other Property", Peter A. Alces, Aaron S. Book

Faculty Publications

No abstract provided.

Civil Rights Act Of 1991 -- Employer Liability For Punitive Damages In Title Vii Claims, Angela M. Banks

Faculty Publications

No abstract provided.

Reintegrative Shaming In Corporate Sentencing, Jayne W. Barnard

Faculty Publications

No abstract provided.

The Delisting Bias In Crsp’S Nasdaq Data And Its Implications For The Size Effect, Tyler Shumway, Vincent A. Warther

Faculty Publications

We investigate the bias in CRSP's Nasdaq data due to missing returns for delisted stocks. We find that the missing returns are large and negative on average, and that delisted stocks experience a substantial decrease in liquidity. We estimate that using a corrected return of −55 percent for missing performance-related delisting returns corrects the bias. We revisit previous work which finds a size effect among Nasdaq stocks. After correcting for the delisting bias, there is no evidence that there ever was a size effect on Nasdaq. Our results are inconsistent with most risk-based explanations of the size effect.

Demonstration: A Robust Web Data-Extraction Technique With High Recall And Precision, Deryle W. Lonsdale, D. M. Campbell, Yihong Ding, David W. Embley, K. Hewett, D. L. Jackman, S. S. Jeffries, Y. S. Jiang, D. Lewis, Stephen W. Liddle, Y. K. Ng, A. L. Peacock, D. J. Seer, R. D. Smith, S. H. Yau, M. Xu, L. Xu

Faculty Publications

Our demo shows how to extract and structure data found in data-rich, unstructured, multiple-record Web documents. Users may either apply pre-built extraction applications or build and apply their own. The demo is significant because it (1) attacks an important data-centric problem and (2) uses database technology to produce good results with minimal effort.

Performance Surface Prediction For Wan-Based Clusters, Mark J. Clement, J. Kelly Flanagan, Glenn M. Judd, Bryan S. Morse, Joy L. Peterson

Faculty Publications

The last five years have been a period of exponential growth in the number of machines connected to the Internet and the speed at which these machines communicate. The infrastructure is now in place to consider a nationwide cluster of workstations as a viable parallel processing platform. In order to achieve acceptable performance on this kind of a machine, performance prediction tools must provide information on where to place computational objects. Incorrect object placement can result in poor performance and congestion in the network. This research develops a new paradigm for predicting performance in the Wide Area Network (WAN) based …

Free Trade And The Environment: The Nafta, The Naaec, And Implications For The Future, Tseming Yang, Ignacia S. Moreno, James W. Rubin, Russell F. Smith Iii

Faculty Publications

No abstract provided.

Heterosexual Privilege And The Internal Revenue Code, Patricia A. Cain

Faculty Publications

The Internal Revenue Code privileges married couples in several different ways. Not only do certain rules offer economic benefit, but the rules also serve an expressive function by delivering a message about the value of marriage. Despite the existence of the marriage tax penalty and a handful of other rules that only benefit the traditional one-earner married couple, the Internal Revenue Code, on balance, privileges marriage over non-marriage, and thus privileges heterosexuality. This article identifies three distinctive harms to gay men and lesbians that result from this privileging of heterosexual marriage. They are: (1) the denial of specific tax benefits …

The Domestication Of International Human Rights: Non-Self-Executing Declarations And Human Rights Treaties, David Sloss

Faculty Publications

No abstract provided.

A Second Redemption?, Bradley W. Joondeph

Faculty Publications

No abstract provided.

Private Legislation In The United States - How The Uniform Commerical Code Becomes Law, William J. Woodward Jr.

Faculty Publications

No abstract provided.

The Bard And The Bench: An Opinion And Brief Writer's Guide To Shakespeare, Robert Peterson

Faculty Publications

This work is a legal brief writer's and opinion drafter's guide to Shakespeare. It collects and catalogues by topic citations to plays, poems, or passages that are actually found in judicial opinions. This essay also suggests a few uncited orphans deserving a home in brief or opinion. The catalogue is web based; the reader may search it in its electronic format or download it for old-fashioned browsing.

Analysis Of A Lithium/Thionyl Chloride Battery Under Moderate-Rate Discharge, Mukul Jain, Ganesan Nagasubramanian, Rudolph G. Jungst, John W. Weidner

Faculty Publications

A one-dimensional mathematical model of a spirally wound lithium/thionyl chloride primary battery is developed and used for parameter estimation and design studies. The model formulation is based on the fundamental conservation laws using porous electrode theory and concentrated solution theory. The model is used to estimate the transference number, the diffusion coefficient, and the kinetic parameters for the reactions at the anode and the cathode as a function of temperature. These parameters are obtained by fitting the simulated capacity and average cell voltage to experimental data over a wide range of temperatures (–55 to 49°C) and discharge loads (10-250 ). …

A Global Communication Optimization Technique Based On Data-Flow Analysis And Linear Algebra, M. Kandemir, P. Banerjee, A. Choudhary, J. Ramanujam, N. Shenoy

Faculty Publications

Reducing communication overhead is extremely important in distributed-memory message-passing architectures. In this article, we present a technique to improve communication that considers data access patterns of the entire program. Our approach is based on a combination of traditional data-flow analysis and a linear algebra framework, and it works on structured programs with conditional statements and nested loops but without arbitrary goto statements. The distinctive features of the solution are the accuracy in keeping communication set information, support for general alignments and distributions including block-cyclic distributions, and the ability to simulate some of the previous approaches with suitable modifications. We also …

Coyote Paradox: Some Indian Law Reflections From The Edge Of The Prairie, Frank Pommersheim

Faculty Publications

No abstract provided.