Digital Commons Network^™

Causal Inference In Epidemiological Studies With Strong Confounding, Kelly L. Moore, Romain S. Neugebauer, Mark J. Van Der Laan, Ira B. Tager

U.C. Berkeley Division of Biostatistics Working Paper Series

One of the identifiabilty assumptions of causal effects defined by marginal structural model (MSM) parameters is the experimental treatment assignment (ETA) assumption. Practical violations of this assumption frequently occur in data analysis, when certain exposures are rarely observed within some strata of the population. The inverse probability of treatment weighted (IPTW) estimator is particularly sensitive to violations of this assumption, however, we demonstrate that this is a problem for all estimators of causal effects. This is due to the fact that the ETA assumption is about information (or lack thereof) in the data. A new class of causal models, causal …

Sr-09-10-(03) 49 Cfahc, Marshall University

Recommendations

No abstract provided.

Ucc Minutes October 22, 2009, Kutztown University Curriculum Committee

UCC Minutes

No abstract provided.

The Effect Of Mathematics Self-Efficacy On Mathematics Achievement Of High School Students, Xing Liu, Hari Koirala

NERA Conference Proceedings 2009

The purpose of this study was to investigate the relationship between mathematics self-efficacy and mathematics achievement of high school sophomores across the United States. Using regression analysis for complex sample survey data from the Educational Longitudinal Study of 2002 (ELS, 2002) (n = 11726), the current study indicated that mathematics self-efficacy and mathematics achievement were positively related, and mathematics self-efficacy was a significantly positive predictor of mathematics achievement. Results from this study, which is generalizable to the population of approximately three million high school sophomores, suggest that mathematics self-efficacy of high school students should be promoted to increase their achievement.

Book Review: Carl Cranor, Toxic Torts: Science, Law, And The Possibility Of Justice, David S. Caudill

Working Paper Series

Carl F. Cranor’s Toxic Torts: Science, Law, and the Possibility of Justice is a sustained, comprehensive argument that the Daubert gatekeeping regime has tilted the playing field against injured plaintiffs in toxic tort litigation. More generally, Cranor joins those who argue that the Daubert regime has not fared well in practice. Complex scientific evidence is not handled well in trials because scientific methods, data, and inferential reasoning are not well understood by gatekeeping judges. Cranor’s goal is to help solve this problem by offering a detailed description of the patterns of reasoning, evidence collection, and inference in nonlegal scientific settings. …

What's Inside The Pandora's Box Of Student Teaching? Lessons Learned From Student Teachers Education Personnel Preparation, Lucia Buttaro

NERA Conference Proceedings 2009

The purpose of this critical study is to improve Adelphi University's student teaching program protocol in order to enhance future teacher candidates and cooperating teachers, standard procedural information, as well as factors that contribute to teacher candidate success. Fourteen Teaching English as a Second Language (TESOL) teacher candidates were observed, completed journals, and shared their personal experiences in their student teaching placement. Data gathered from a variety of sources illuminated the need to improve communication and collaboration between the parties of the student teaching triad (university supervisor, cooperating teacher, and teacher candidate). In order to develop a strong partnership and …

Architectures And Algorithms For Mitigation Of Soft Errors In Nanoscale Vlsi Circuits, Koustav Bhattacharya

USF Tampa Graduate Theses and Dissertations

The occurrence of transient faults like soft errors in computer circuits poses a significant challenge to the reliability of computer systems. Soft error, which occurs when the energetic neutrons coming from space or the alpha particles arising out of packaging materials hit the transistors, may manifest themselves as a bit flip in the memory element or as a transient glitch generated at any internal node of combinational logic, which may subsequently propagate to and be captured in a latch. Although the problem of soft errors was earlier only a concern for space applications, aggressive technology scaling trends have exacerbated the …

Computer Science Discipline Assessment Report 2009, Computer Science Discipline

Assessment of Student Learning Reports

No abstract provided.

The Missouri Miner, Octoner 22, 2009

The Missouri Miner Newspaper

No abstract provided.

Photoproduction Of Π​+Π​- Meson Pairs On The Proton, M. Battaglieri, Gerard P. Gilfoyle, Et. Al.

Physics Faculty Publications

The exclusive reaction γp → pπ⁺π^- was studied in the photon energy range 3.0–3.8 GeV and the momentum transfer range 0:4 < -t < 1:0 GeV². Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility. In this kinematic range, the integrated luminosity was about 20 pb^-1. The reaction was isolated by detecting the π⁺ and proton in CLAS, and reconstructing the π^- via the missing-mass technique. Moments of the di-pion decay angular distributions were derived from the experimental data. Differential cross sections for the S, P, and D …

The Observer, Central Washington University

Student Newspaper

Student newspaper for Central Washington University for October 22-28, 2009 Vol. 83, No. 4.

Ultrafast Gain And Refractive Index Dynamics In Gainnassb Semiconductor Optical Amplifiers, Tomasz Piwonski, J. Pulka, Gillian Madden, Guillaume Huyet, John Houlihan

Cappa Publications

The gain and refractive index dynamics of dilute nitride antimonide semiconductor optical amplifiers are studied using heterodyne pump probe spectroscopy, both in forward and reverse bias regimes. In the forward biased absorption regime, both gain and refractive index relax on the same timescale indicating that both quantities are linked to the same relaxation process, interband recombination. Above transparency, in the forward biased gain regime, the gain and phase exhibit differing timescales resulting in a dynamical alpha factor that varies strongly with time. Reversed bias measurements suggest a recombination dominated absorption recovery where the recovery timescale increases with increasing reversed bias, …

Spectrum, Volume 26, Issue 5, Sacred Heart University

Newspapers (Obelisk & Spectrum)

Highlights include: Spirit groups perform on red carpet in NYC -- Families gather together at SHU -- Ira Joe Fisher lecture 'joins the conversation' -- Lights, camera, action, T.A.P.? -- SHU terminates test scores for admission -- Steelers' former coach comes to Sacred Heart -- Obama awarded Nobel Peace Prize -- Pet peeves, Liz's skeeves -- October: think black, orange, and...pink? -- Students choice: Weighing in on professors and classes -- He Said / She Said -- 'Let the wild rumpus start' -- Late-night host admits to scandal -- Get Reel: Movie review of the week -- Jon and Kate's …

Scaled Momentum Distributions Of Charged Particles In Dijet Photoproduction At Hera, O. Behnke, J. Behr, U. Behrens, C. Blohm, K. Borras, D. Bot, R. Ciesielski, N. Coppola, S. Fang, A. Geiser, P. Gölttlicher, J. Grebenyuk, I. Gregor, T. Haas, W. Hain, A. Hüttmann, F. Januschek, B. Kahle, I. I. Katkov, U. Klein, U. Kötz, H. Kowalski, M. Lisovyi, E. Lobodzinska, B. Löhr, R. Mankel, I. A. Melzer-Pellmann, S. Miglioranzi, A. Montanari, T. Namsoo, D. Notz, Margarita C. K. Mattingly

Faculty Publications

The scaled momentum distributions of charged particles in jets have been measured for dijet photoproduction with the ZEUS detector at HERA using an integrated luminosity of 359 pb-1. The distributions are compared to predictions based on perturbative QCD carried out in the framework of the modified leading-logarithmic approximation (MLLA) and assuming local parton-hadron duality (LPHD). The universal MLLA scale, Λeff, and the LPHD parameter, κch, are extracted. © SISSA 2009.

October 21, 2009 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Strategies For The Fusion Of Satellite Fire Radiative Power With Burned Area Data For Fire Radiative Energy Derivation, Luigi Boschetti, David P. Roy

GSCE Faculty Publications

Instantaneous estimates of the power released by a fire (Fire Radiative Power, FRP) are available with satellite active fire detection products. Integrating FRP in time provides an estimate of the total energy released (Fire Radiative Energy, FRE), which can be converted into burned biomass estimates needed by the atmospheric emissions modeling community. While straightforward in theory, the integration of FRP in time and space is affected by temporal and spatial undersampling imposed by the satellite sensing and orbit geometry, clouds, and active fire product omission errors. Combination of active fire FRP estimates with independently derived burned area maps provides the …

Maximal Class Numbers Of Cm Number Fields, Ryan Daleida

Algebra/Number Theory Seminar

Through the class number formula, the Generalized Riemann Hypothesis (GRH) can be used to formulate upper bounds for the class numbers of certain natural families of number fields. A natural question to ask is whether or not these bounds are sharp. While the answer is known to be positive for all natural families of quadratic and cubic number fields, it is actually negative for certain families of quartic number fields. More generally, it turns out that for any family of CM number fields the GRH conditional upper bound on the class number is never attainable. However, by subdividing these natural …

October 21, 2009 Greenmail, University Of Alabama At Birmingham

GreenMail (student newsletter through 2024)

No abstract provided.

The Pentameric Vertex Proteins Are Necessary For The Icosahedral Carboxysome Shell To Function As A Co2 Leakage Barrier, Fei Cai, Balaraj B. Menon, Gordon C. Cannon, Kenneth J. Curry, Jessup M. Shively, Sabine Heinhorst

Faculty Publications

Background

Carboxysomes are polyhedral protein microcompartments found in many autotrophic bacteria; they encapsulate the CO₂ fixing enzyme, ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO) within a thin protein shell and provide an environment that enhances the catalytic capabilities of the enzyme. Two types of shell protein constituents are common to carboxysomes and related microcompartments of heterotrophic bacteria, and the genes for these proteins are found in a large variety of bacteria.

Methodology/Principal Findings

We have created a Halothiobacillus neapolitanus knockout mutant that does not produce the two paralogous CsoS4 proteins thought to occupy the vertices of the icosahedral carboxysomes and related microcompartments. Biochemical …

Volume 47, Number 9: October 21, 2009, University Of North Dakota

University Letter Archive

No abstract provided.

A Heteroskedastic Error Covariance Matrix Estimator Using A First-Order Conditional Autoregressive Markov Simulation For Deriving Asympotical Efficient Estimates From Ecological Sampled Anopheles Arabiensis Aquatic Habitat Covariates, Benjamin G. Jacob, Daniel A. Griffith, Ephantus J. Muturi, Erick X. Caamano, John I. Githure, Robert J. Novak

All Peer-Reviewed Publications

Background. Autoregressive regression coefficients for Anopheles arabiensis aquatic habitat models are usually assessed using global error techniques and are reported as error covariance matrices. A global statistic, however, will summarize error estimates from multiple habitat locations. This makes it difficult to identify where there are clusters of An. arabiensis aquatic habitats of acceptable prediction. It is therefore useful to conduct some form of spatial error analysis to detect clusters of An. arabiensis aquatic habitats based on uncertainty residuals from individual sampled habitats. In this research, a method of error estimation for spatial simulation models was demonstrated using autocorrelation indices and …

Lasagna Plots: A Saucy Alternative To Spaghetti Plots, Bruce Swihart, Brian Caffo, Bryan D. James, Matthew Strand, Brian S. Schwartz, Naresh M. Punjabi

Johns Hopkins University, Dept. of Biostatistics Working Papers

Longitudinal repeated measures data has often been visualized with spaghetti plots for continuous out- comes. For large datasets, this often leads to over-plotting and consequential obscuring of trends in the data. This is primarily due to overlapping of trajectories. Here, we suggest a framework called lasagna plot ting that constrains the subject-specific trajectories to prevent overlapping and utilizes gradients of color to depict the outcome. Dynamic sorting and visualization is demonstrated as an exploratory data analysis tool. Supplemental material in the form of sample R code additional illustrated examples are available online.

Estate Of Albert P. Schultz, B V. John Potter

2009 Decisions

USDC for the Western District of Pennsylvania

Reporter's Verbatim Report Of Proceedings, Tuesday, October 20, 2009, Volume Xxiv [Pages 5258-5410]

King County Superior Court Documents

No abstract provided.

Working Session: Using Eye-Tracking To Understand Program Comprehension, Yann Gaël Guéhéneuc, Huzefa Kagdi, Jonathan I. Maletic

Computer Science Faculty Research & Creative Works

The working session focuses on the use of eye-tracking technology to assess, understand, and evaluate tools and techniques for program comprehension. an introduction to the technology and tools of eye-tracking will be presented. a discussion of how these tools augment existing evaluation mechanism in the context of program comprehension will follow. Research directions and open problems will be a main topic. © 2009 IEEE.

Methods And Devices For Cryopreservation Of Biological Cells And Tissues, Dayong Gao, Gary Van Zant, Xiangdong Cui

Mechanical Engineering Faculty Patents

Novel methods, compositions, and devices for achieving optimal cooling of living cells during cryopreservation are disclosed. In one aspect, the method comprises gradually cooling the cell to a first predetermined temperature, followed by rapidly cooling the cell to a second predetermined temperature. In another aspect, a device is described for achieving a desired cooling rate for a cell, comprising a first container for holding a cell, a second container for holding the first container, and optionally a frame for holding the first container in a spaced apart relationship with the second container. The method of the invention comprises placing cells …

Daily Eastern News: October 20, 2009, Eastern Illinois University

October

No abstract provided.

Fcic Roundtable October 20, 2009, United States: Financial Crisis Inquiry Commission (Fcic), Martin Neil Baily, Simon Johnson, Hal S. Scott, Joseph E. Stiglitz, John B. Taylor, Luigi Zingales

Documents

No abstract provided.

The Quiet Coup, Simon Johnson

Documents

No abstract provided.

October 20, 2009, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.