Digital Commons Network^™

Deafdigest: Blue Edition, August 21, 2005, Barry Strassler

DeafDigest Blue 2005

No abstract provided.

Chemical Composition In The Globular Cluster M71 From Keck Hires Spectra Of Turnoff Stars, Ann Merchant Boesgaard, Jeremy R. King, Ann Marie Cody, Alex Stephens, Constantine P. Deliyannis

Publications

We have made observations with the Keck I telescope and HIRES at a resolution of ∼45,000 of five nearly identical stars at the turn-off of the metal-rich globular cluster M 71. Our mean Fe abundance, [Fe/H]=-0.80 +-0.02, is in excellent agreement with previous cluster determinations from both giants and near-turnoff stars. There is no clear evidence for any star-to-star abundance differences or correlations in our sample. Abundance ratios of the Fe-peak elements (Cr, Ni) are similar to Fe. The turn-off stars in M71 have remarkably consistent enhancements of 0.2 - 0.3 dex in [Si/Fe], [Ca/Fe] and [Ti/Fe] -- like the …

Computing The Total Sample Size When Group Sizes Are Not Fixed, Mithat Gonen

Memorial Sloan-Kettering Cancer Center, Dept. of Epidemiology & Biostatistics Working Paper Series

This article is concerned with computing the total sample size required for a two-sample comparison when the sizes of the two groups to be compared cannot be fixed in advance. This is frequently encountered when group membership depends on a variable which is observable only after the subject is enrolled to the study, such as a genetic or a biological marker. The most common way of circumventing this problem is assuming a fixed number for the prevalence of the condition that will determine the group membership and compute the required sample size conditionally. In this article this practice is formalized …

Day 3: Friday, 19 August 2005: Section 7 Consultation, Susan Linner, Leslie Elwood, Steve Culver

Endangered Species Act Congressional Field Tour (August 17-19)

10 pages (includes color illustrations and map).

Contains references.

Day 3: Friday, 19 August 2005: Habitat Conservation Plans, Susan Linner, Anne Ruggles, Anne Winans

Endangered Species Act Congressional Field Tour (August 17-19)

5 pages (includes illustration).

Contains references.

Day 3: Friday, 19 August 2005: States And The Esa, Pam Inmann, Tom Norton

Endangered Species Act Congressional Field Tour (August 17-19)

1 page.

Contains references.

Survival Point Estimate Prediction In Matched And Non-Matched Case-Control Subsample Designed Studies, Annette M. Molinaro, Mark J. Van Der Laan, Dan H. Moore, Karla Kerlikowske

U.C. Berkeley Division of Biostatistics Working Paper Series

Providing information about the risk of disease and clinical factors that may increase or decrease a patient's risk of disease is standard medical practice. Although case-control studies can provide evidence of strong associations between diseases and risk factors, clinicians need to be able to communicate to patients the age-specific risks of disease over a defined time interval for a set of risk factors.

An estimate of absolute risk cannot be determined from case-control studies because cases are generally chosen from a population whose size is not known (necessary for calculation of absolute risk) and where duration of follow-up is not …

Efficient Wait-Free Algorithms For Implementing Ll/Sc Objects, Srdjan Petrovic

Dartmouth College Ph.D Dissertations

Over the past decade, a pair of instructions called load-linked (LL) and store-conditional (SC) have emerged as the most suitable synchronization instructions for the design of lock-free algorithms. However, current architectures do not support these instructions; instead, they support either CAS (e.g., UltraSPARC, Itanium, Pentium) or restricted versions of LL/SC (e.g., POWER4, MIPS, Alpha). Thus, there is a gap between what algorithm designers want (namely, LL/SC) and what multiprocessors actually support (namely, CAS or restricted LL/SC). To bridge this gap, this thesis presents a series of efficient, wait-free algorithms that implement LL/SC from CAS or restricted LL/SC.

Red Rock Desert Learning Center: The Vision, Red Rock Desert Learning Center

Oliver Ranch Project

To instill stewardship and respect by increasing knowledge and understanding of the Mojave Desert ecosystems and cultures through a unique experiential discovery program.

Chasing The Track, Tony Nicholas

Theses

This thesis explores the search for a creative process that satisfies my urge to combine photography with imagery and objects from personal and mass media sources, revealing the artist's hand in the work. This work also explores the use of a subject as a means to finding a working process and its importance in that discovery.

Auto racing motivated me to study photography, thus the use of automobile culture, with an emphasis on the subculture of auto racing is a key element in this work. Juxtaposing unrelated materials and imagery was a new experience. As I worked, the evolving imagery …

Go Mobile » Access By Rochester Institute Of Technology Core Collapse Via Coarse Dynamic Renormalization, Andras Szell, David Merritt, Ioannis Kevrekidis

Articles

In the context of the recently developed “equation-free” approach to computer-assisted analysis of complex systems, we extract the self-similar solution describing core collapse of a stellar system from numerical experiments. The technique allows us to side-step the core “bounce” that occurs in direct N-body simulations due to the small-N correlations that develop in the late stages of collapse, and hence to follow the evolution well into the self-similar regime.

The Problematics Of The Pareto Principle, Daniel A. Farber

ExpressO

The Pareto Principle asserts in one form that an outcome which is unanimously preferred by individuals should be chosen by society; or in another form that an outcome should be chosen if it is preferred by at least one individual and the remaining members of society are indifferent. It is little wonder that this principle, which has the ring of a self-evident truth, has been the “gold standard” for law and economics. Despite its appeal, however, the Pareto Principle has limitations that are irrelevant in some spheres such as corporate law, but that may have serious import for fields such …

A User-Friendly Introduction To Link-Probit-Normal Models, Brian S. Caffo, Michael Griswold

Johns Hopkins University, Dept. of Biostatistics Working Papers

Probit-normal models have attractive properties compared to logit-normal models. In particular, they allow for easy specification of marginal links of interest while permitting a conditional random effects structure. Moreover, programming fitting algorithms for probit-normal models can be trivial with the use of well-developed algorithms for approximating multivariate normal quantiles. In typical settings, the data cannot distinguish between probit and logit conditional link functions. Therefore, if marginal interpretations are desired, the default conditional link should be the most convenient one. We refer to models with a probit conditional link an arbitrary marginal link and a normal random effect distribution as link-probit-normal …

Day 2: Thursday, 18 August 2005: Colorado Native Aquatic Species Restoration Program, Dave Schnoor

Endangered Species Act Congressional Field Tour (August 17-19)

6 pages (includes illustrations).

Contains one reference.

Day 2: Thursday, 18 August 2005: Upper Colorado River Endangered Fish Recovery Program, Bob Muth, Tom Pitts, Dan Luecke

Endangered Species Act Congressional Field Tour (August 17-19)

58 pages (includes illustrations and maps).

Contains references.

Day 2: Thursday, 18 August 2005: Candidate Conservation Agreements And Collaborative Multi-Party Agreements, Al Pfister, Gary Skiba, Tim Lehmann

Endangered Species Act Congressional Field Tour (August 17-19)

8 pages (includes illustrations and maps).

Contains references.

Day 2: Thursday, 18 August 2005: Canada Lynx Reintroduction, Gary Skiba, Rob Edward, Bonnie Kline

Endangered Species Act Congressional Field Tour (August 17-19)

5 pages (includes some color illustrations and maps).

Contains references.

R.I.T. News & Events - August 18, 2005, University News Services, Rochester Institute Of Technology

University Publications

Main features of this issue: Highway bill includes RIT research funds. A musical tribute to a civil rights icon. Wine & Culinary Center classes begin this fall. Neighborhood alliance helps transform city block.Sen. Alesi secures program funding. News brief. Color science Q&A now online. Mark your calendars. Preparing mind and body for college. SG leaders focus on school spirit. Bader gives $100K. Paving the way for the future of math and science. Cyber threats studied. New book examines changing face of the printing industry. Packaging students earn top honors. Larsen Engineers celebrates 50 years in Rochester. A taste of college …

The Antelope, University Of Nebraska At Kearney

The Antelope

No abstract provided.

Dynamic Dead Variable Analysis, Micah S. Lewis

Theses and Dissertations

Dynamic dead variable analysis (DDVA) extends traditional static dead variable analysis (SDVA) in the context of model checking through the use of run-time information. The analysis is run multiple times during the course of model checking to create a more precise set of dead variables. The DDVA is evaluated based on the amount of memory used to complete model checking relative to SDVA while considering the extra overhead required to implement DDVA. On several models with a complex control flow graph, DDVA reduces the amount of memory needed by 38-88MB compared to SDVA with a cost of 36 bytes of …

Campus Chronicle (Vol. 8, No. 2), Valparaiso University

Campus Chronicle

No abstract provided.

Agenda: Endangered Species Act Congressional Field Tour, University Of Colorado Boulder. Natural Resources Law Center

Endangered Species Act Congressional Field Tour (August 17-19)

The Center sponsored its third annual field tour for staff members of the United States Congress, the United States Environmental Protection Agency, and the Colorado state legislature.

Day 1: Wednesday, 17 August 2005: Introduction, Mark Squillace

Endangered Species Act Congressional Field Tour (August 17-19)

5 pages.

Contains references.

Day 1: Wednesday, 17 August 2005: Science And The Esa, Joy Nicholopoulos, William Lewis

Endangered Species Act Congressional Field Tour (August 17-19)

43 pages (includes illustrations and map).

Contains references.

Day 1: Wednesday, 17 August 2005: Biodiversity And Critical Habitat, Charles Bedford, Federico Cheever, Tim Sullivan

Endangered Species Act Congressional Field Tour (August 17-19)

6 pages (includes color illustration).

Contains references.

Ua3/9/5 Conservation Reserve Enhancement Program (Crep), Wku President's Office

WKU Administration Documents

Talking points used by WKU president Gary Ransdell regarding WKU's partnering with Conservation Reserve Enhancement Program.

Aerial Mass Color - Marking Of Blackbird Roosts, H. Jeffrey Homan, George M. Linz

United States Department of Agriculture Wildlife Services: Staff Publications

We use mass color-marhng to track the local and regional movements of large roosts of blackbirds (Icteridae). Several marhngs have been done by National Wildlife Research Center scientists, including marhng of spring roosts in northeastern Missouri and eastern South Dakota (Knittle et al. 1987, Knittle et al. 1996, Homan et al. 2004), fall roosts in central North Dakota (Linz et al. 1991, Homan et al. 2005), and winter roosts in the southern U.S. (Harsch 1995). Here, we provide a description of the process and methodology of aerial mass color-marhng with fluorescent particles.

Analysis Of A Chemically-Bonded Phosphate Ceramic As An Alternative Oilfield Cementing System For Arctic Regions, Sudiptya Banerjee

Engineering

Traditional Portland cement has been used in the oilfield industry for over a hundred years in the United States. However, under the harsh cold of arctic conditions, cement has failed to provide the minimum standards of strength and safety required in the petroleum industry. Though there has been significant research to correct this shortcoming, no ideal solution has been found to improve the arctic performance of Portland cement. A chemically-bonded phosphate ceramic, known generically as Ceramicrete, has been developed which appears attractive as a cement replacement in arctic well construction. This material contains no Portland cement and does not have …

Neuroprotection In Hippocampal Slices From The Hibernating Species Arctic Ground Squirrel, Spermophilus Parryii, Austin Pfeiffer Ross

Chemistry and Biochemistry

Stroke is the third leading cause of death in the U.S. and the leading cause of adult onset disability worldwide. Despite tremendous efforts to find therapeutics, only one currently approved treatment for stroke exists which is indicated for use in less than 5% of stroke victims. During a stroke, the brain experiences oxygen and nutrient deprivation due to lack of blood flow (i.e., ischemia) and tissue destruction ensues. Hibernating Arctic ground squirrels (AGS), Spermophilus parryii, are able to survive profound decreases in blood flow and cerebral perfusion during torpor, and return of blood flow (i.e., reperfusion) during intermittent euthermic periods …

The Genome Of A Saxitoxin-Producing Cyanobacterium, Andrew Lee Krohn

Chemistry and Biochemistry

Saxitoxin, the causative agent of paralytic shellfish poisoning, is produced by dinoflagellates and cyanobacteria, the latter being a far simpler organism at the genomic level. In order to establish a baseline for future research into saxitoxin biosynthesis, we sought to determine the genomic complexity of the saxitoxin-producing cyanobacterium, Anabaena circinalis strain ACBU02, relative to the published genome of its non-toxic analogue, Anabaena sp. PCC 7120. Total conservation of genomic organization was represented in less than 10 percent of end-sequenced DNA clones from restriction digestion libraries. Ninety percent of sequences contained highly homologous regions indicating a high degree of conservation among …