Digital Commons Network^™

Correcting Publication Bias In Meta-Analysis: A Truncation Approach, Guillermo Montes, Bohdan S. Lotyczewski

Journal of Modern Applied Statistical Methods

Meta-analyses are increasingly used to support national policy decision making. The practical implications of publications bias in meta-analysis are discussed. Standard approaches to correct for publication bias require knowledge of the selection mechanism that leads to publication. In this study, an alternative approach is proposed based on Cohen’s corrections for a truncated normal. The approach makes less assumptions, is easy to implement, and performs well in simulations with small samples. The approach is illustrated with two published meta-analyses.

Comparison Of Viral Trajectories In Aids Studies By Using Nonparametric Mixed-Effects Models, Chin-Shang Li, Hua Liang, Ying-Hen Hsieh, Shiing-Jer Twu

Journal of Modern Applied Statistical Methods

The efficacy of antiretroviral therapies for human immunodeficiency virus (HIV) infection can be assessed by studying the trajectory of the changing viral load with treatment time, but estimation of viral trajectory parameters by using the implicit function form of linear and nonlinear parametric models can be problematic. Using longitudinal viral load data from a clinical study of HIV-infected patients in Taiwan, we described the viral trajectories by applying a nonparametric mixed-effects model. We were then able to compare the efficacies of highly active antiretroviral therapy (HAART) and conventional therapy by using Young and Bowman’s (1995) test.

Deconstructing Arguments From The Case Against Hypothesis Testing, Shlomo S. Sawilowsky

Journal of Modern Applied Statistical Methods

The main purpose of this article is to contest the propositions that (1) hypothesis tests should be abandoned in favor of confidence intervals, and (2) science has not benefited from hypothesis testing. The minor purpose is to propose (1) descriptive statistics, graphics, and effect sizes do not obviate the need for hypothesis testing, (2) significance testing (reporting p values and leaving it to the reader to determine significance) is subjective and outside the realm of the scientific method, and (3) Bayesian and qualitative methods should be used for Bayesian and qualitative research studies, respectively.

Review Of Wages Of Violence: Naming And Identity In Postcolonial Bombay, By Thomas Blom Hansen, Madhavi Kale

History Faculty Research and Scholarship

No abstract provided.

Towards The Promotion Of Effective E-Learning Practice For Academic Staff Development In Dit, Roisin Donnelly, Frances O'Brien

Journal Articles

Despite the many challenges facing educators today, as well as the array of teaching paradigms on offere, the principal goals of higher education remain the same.

Ecotoxicological Research At Dit, Maria Davoren, Colm O'Dowd, Sharon Ni Shuilleabhain

Articles

The term ecotoxicology first defined by Rene Truhart in 1969, essentially describes the study of the harmful effects of chemicals upon ecosystems.

Building An Environmental Ethic From The Ground Up, Alyson C. Flournoy

UF Law Faculty Publications

Over the last twenty years there has been a remarkable theoretical flourishing in the field of environmental philosophy, with the development of biocentric ethics, animal rights theories, deep ecology, ecofeminism, modified utilitarianism, moral pluralism and theories drawing on numerous religious and cultural traditions. These theories explore the intellectual and moral causes for the environmentally destructive practices of the dominant western industrial and economic culture, and propose alternatives that might avoid these consequences. This symposium raises a worthy question: to what extent have these theories had practical impact on environmental law and policy. I come to this question as a lawyer …

Contents, Anon

Washington Law Review

No abstract provided.

New Studies Provide Insight Into How Disputants Value Case Evaluation By Third Parties, Gregory Todd Jones, Douglas H. Yarn

Faculty Publications By Year

No abstract provided.

Georgia's Public Service Bar Exam Alternative, Andrea A. Curcio, Clark D. Cunningham

Faculty Publications By Year

No abstract provided.

Profile Of Pap Smear Cytology In The Western Region Of Saudi Arabia, Awatif Jamal, Jaudah A. Al-Maghrabi

Saudi Medical Journal

OBJECTIVE: Cervical carcinoma is an important womens health problem in the Western countries. There are only few published data on this disease in the Kingdom of Saudi Arabia (KSA). The aim of this study is to evaluate the abnormal cytological entities detected by cervical Pap smear in Western region of KSA and to discuss the importance of Pap smears screening programs. METHODS: Retrospective review of all the cervical smears present at the King Abdul-Aziz University Hospital, Jeddah, KSA from 1984 to 2000. The reports of 22089 smears were retrieved from the file of the pathology department. RESULTS: There were 368 …

Management Of Acute Myocardial Infarction., Mohamed Z. Khalil, Abdullah A. Abba

Saudi Medical Journal

OBJECTIVE: Acute myocardial infarction (MI) is a major health problem with a substantial fatality and morbidity. The management of patients with acute MI has been addressed in major trials to improve the survival and enhance the quality of life of the patients. Numerous guidelines have been established for the management of such patients. The objective of this study is to determine whether the current practice in managing patients admitted with acute MI in a major community hospital in Riyadh is evidence based compliant. METHODS: The data were collected from patients admitted to the Coronary Care Unit (CCU), Riyadh Medical Complex …

Unmet Need For Family Planning, Farouk M. Shakhatreh

Saudi Medical Journal

No abstract provided.

Statistical Pronouncements Ii, Shlomo S. Sawilowsky

Theoretical and Behavioral Foundations of Education Faculty Publications

No abstract provided.

Benthic Biological Monitoring Program Of The Elizabeth River Watershed (2002), Daniel M. Dauer

Elizabeth River Reports

Executive Summary

A study of the macrobenthic communities of the Elizabeth River watershed was initiated in summer 1999. This report presents the data from the fourth year of sampling in 2002. The three objectives of the Benthic Biological Monitoring Program of the Elizabeth River watershed are: (1) To characterize the health of the tidal waters of the Elizabeth River watershed as indicated by the structure of the benthic communities. ( 2) To conduct trend analyses on long-term data at 14 fixed-point stations to relate temporal trends in the benthic communities to changes in water and/or sediment quality. Trend analyses will …

Functional Interaction Between The Bloom's Syndrome Helicase And The Rad51 Paralog, Rad51l3 (Rad51d), Jp Braybrooke, J-L Li, L Wu, Et Al

School of Biomedical Sciences

Bloom's syndrome (BS) is a genetic disorder associated with short stature, fertility defects, and a predisposition to the development of cancer. BS cells are characterized by genomic instability; in particular, a high rate of reciprocal exchanges between sister-chromatids and homologous chromosomes. The BS gene product, BLM, is a helicase belonging to the highly conserved RecQ family. BLM is known to form a complex with the RAD51 recombinase, and to act upon DNA intermediates that form during homologous recombination, including D-loops and Holliday junctions. Here, we show that BLM also makes a direct physical association with the RAD51L3 protein (also known …

Manpower Allocation With Time Windows And Job Teaming Constraints, Xi Li, Yan Zhi Li, Andrew Lim, Brian Rodrigues

Research Collection Lee Kong Chian School Of Business

In the Manpower Allocation Problem with Time Windows and Job-Teaming Constraints (MAPTWTC), we have a set of jobs located at various locations where each job requires a team of workers. Each job has a time window and a job duration, during which everyone on the team has to be present. The job requirement is satisfied if and only if the required composite team works for long enough duration within the job's time window. The objective of the problem is find a schedule to minimize a weighted sum of the total number of workers, the total travelling distances of all workers …

Jet Production In Charged Current Deep Inelastic E+P Scattering At Hera, S. Chekanov, M. Derrick, D. Krakauer, J. H. Loizides, S. Magill, B. Musgrave, J. Repond, R. Yoshida, Margarita C. K. Mattingly, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, A. Margotti, R. Nania, F. Palmonari, A. Pesci, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan

Faculty Publications

The production rates and substructure of jets have been studied in charged current deep inelastic e+p scattering for Q2 > 200 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 110.5 pb-1. Inclusive jet cross sections are presented for jets with transverse energies ETjet > 14 GeV and pseudorapidities in the range -1 < ηjet < 2. Dijet cross sections are presented for events with a jet having ETjet > 14 GeV and a second jet having ETjet > 5 GeV. Measurements of the mean subjet multiplicity, 〈ηsbj〉, of the inclusive jet sample are presented. Predictions based on parton-shower Monte Carlo models and next-to-leading-order QCD calculations are compared to the measurements. The value of αs (MZ), determined …

Wing Shape In House Finches Differs Relative To Migratory Habit In Eastern And Western North America, Jeremy R. Egbert, James R. Belthoff

Biology Faculty Publications and Presentations

We investigated whether wing morphology differed between the sedentary House Finches (Carpodacus mexicanus) of western North America and the introduced population of eastern North America, as the latter has developed migratory behavior since its inception. Wing morphology differed between eastern and western House Finches. Eastern House Finches had shorter proximal primaries and a longer outer primary, perhaps reflecting a thinner and more pointed wing, although no disparity in wing length was detected. Since we interpret these differences in wing shape as modifications for flight capability, we believe that initial evidence for morphological divergence relative to migratory habit between eastern and …

University Of Nebraska-Lincoln School Of Natural Resources Review: Final Report, December 2003, Michael O'Neill, Phaedra Budy, Stephen Degloria, Ed Kanemasu, Jamie Robertson, Derrel Martin, Anne K. Vidaver, Tylr Naprstek, Donna Woudenberg

School of Natural Resources: Documents and Reviews

In July 2003, the School of Natural Resource Sciences was merged with the Conservation and Survey Division and the Water Center Nebraska State Survey. This merger produced the School of Natural Resources (hereafter referred to as the "School") in its current form. The University of Nebraska-Lincoln requested a ten-year review of the School's programs and activities. The review was administered by the Cooperative State Research, Education and Extension Service (CSREES) in cooperation with the University of Nebraska-Lincoln's Institute of Agriculture and Natural Resources, the College of Agriculture, and the School.

The review document is divided into nine sections. The first …

Nebline, November/December 2003

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

ABC’s for Good Health because Every Woman Matters!
Stretch Your Food Dollar - Create-A-Casserole Chart
Preparing and Using Pine Cones For Decoration
Forcing Spring-Flowering Bulbs
Garden Guide
Choosing and Caring for Indoor Trees
Understanding Nebraska’s Open Burning Law
“Megaforces of Agriculture” Seminar
Storage Methods to Reduce Hay Losses
Fall is a Great Time to Control Winter Annual Weeds
Consider Stand Density, Weeds When Rotating Alfalfa
Thoroughly Modern Thanksgiving: Turkey Cooking Tips
Healthy Eating: Enjoy Nebraska Foods
Making Changes in Eating Behavior
Web Resources of the Month
Lines from Lynn
Household Hints: Holiday Stain Removal for Washable Fabrics
FCE Achievement Night …

Do Asian Men Face Wage Discrimination In The United States?, Marlene Kim

Institute for Asian American Studies Publications

Currently there is a debate regarding whether Asian men suffer from workplace discrimination on account of their race. The research findings have been mixed. Cabezas and Kawaguchi (1988) found that in the San Francisco Metropolitan Area, both foreign-born and U.S.-born men who were of Chinese, Japanese, Filipino, and Korean descent earned less than similarly qualified U.S.-born white men, although they did not examine the statistical significance of these findings. Using the same 1980 census data on a national sample of Chinese, Filipino, Japanese, Asian Indian, and Korean men, Duleep and Sanders (1992) find differences in earnings by race that are …

Salt Equalizer, Vol. 2003, Issue 4, Society Of American Law Teachers

SALT Equalizer

Margalynne Armstrong, The SALT Annual Awards Dinner to Honor Quigley, Lewis, at 1.

Michael Rooke-Ley, SALT, FAIR Sue Department of Defense over Solomon Amendment, at 1.

Raleigh Hanna Levine, Introducing SALT’s New Co-Presidents, at 2.

Paula C. Johnson & Michael Rooke-Ley, Co-Presidents’ Column, at 3.

Eileen Kaufman, SALT Bar Exam Workshop, at 4.

Sally Simpson, The Community Legal Access BarAlt Program, at 4.

Andrea Curcio & Clark D. Cunningham, Georgia’s Public Service Bar Exam Alternative, at 5.

Marjorie M. Shultz & Sheldon Zedeck, Identification and Development of Predictors for Successful Lawyering, at …

A Critical Examination Of The Use Of Preliminary Tests In Two-Sample Tests Of Location, Kimberly T. Perry

Journal of Modern Applied Statistical Methods

This paper explores the appropriateness of testing the equality of two means using either a t test, the Welch test, or the Wilcoxon-Mann-Whitney test for two independent samples based on the results of using two classes of preliminary tests (i.e., tests for population variance equality and symmetry in underlying distributions).

Confidence Intervals For P(X Less Than Y) In The Exponential Case With Common Location Parameter, Ayman Baklizi

Journal of Modern Applied Statistical Methods

The problem considered is interval estimation of the stress - strength reliability R = P(Xθ and λ respectively and a common location parameter μ . Several types of asymptotic, approximate and bootstrap intervals are investigated. Performances are investigated using simulation techniques and compared in terms of attainment of the nominal confidence level, symmetry of lower and upper error rates, and expected length. Recommendations concerning their usage are given.

Approximate Bayesian Confidence Intervals For The Variance Of A Gaussian Distribution, Vincent A. R. Camara

Journal of Modern Applied Statistical Methods

The aim of the present study is to obtain and compare confidence intervals for the variance of a Gaussian distribution. Considering respectively the square error and the Higgins-Tsokos loss functions, approximate Bayesian confidence intervals for the variance of a normal population are derived. Using normal data and SAS software, the obtained approximate Bayesian confidence intervals will then be compared to the ones obtained with the well known classical method. The Bayesian approach relies only on the observations. It is shown that the proposed approximate Bayesian approach relies only on the observations. The classical method, that uses the Chi-square statistic, does …

End Matter, Jmasm Editors

Journal of Modern Applied Statistical Methods

No abstract provided.

A Comparison Of Equivalence Testing In Combination With Hypothesis Testing And Effect Sizes, Christopher J. Mecklin

Journal of Modern Applied Statistical Methods

Equivalence testing, an alternative to testing for statistical significance, is little used in educational research. Equivalence testing is useful in situations where the researcher wishes to show that two means are not significantly different. A simulation study assessed the relationships between effect size, sample size, statistical significance, and statistical equivalence.

Dynamic Modeling Of The Ssdi Application Timing Decision: The Importance Of Policy Variables, Rickard V. Burkhauser, J S. Butler, Gulcin Gumus

Economics - All Scholarship

This paper analyzes the importance of policy variables in the context of Social Security Disability Insurance (SSDI) application timing decision. Previously, we explicitly modeled the optimal timing of SSDI application using dynamic structural models. We estimated these models using data from the Health and Retirement Study (HRS). This paper uses option value model estimates to simulate application timing under alternative SSDI policy formulations. We consider changes in three policy variables: benefit levels, acceptance rates, and employer accommodation. Our simulations suggest all these changes would have substantial effects on expected spell lengths until application and on lifetime application rates, and hence …

Determining Error Bars In Measurements Of Ultrashort Laser Pulses, Ziyang Wang, Erik Zeek, Rick Trebino, Paul Kvam

Department of Math & Statistics Faculty Publications

We present a simple and automatic method for determining the uncertainty in the retrieved intensity and phase versus time (and frequency) due to noise in a frequency-resolved optical-gating trace, independent of noise source. It uses the ‘‘bootstrap’’ statistical method and also yields an automated method for phase blanking (omitting the phase when the intensity is too low to determine it).