Publications

Structure and Function of Stream Ecosystems

General functional, interrelated components have been defined and initially dimensioned for representative stream ecosystems. Additional or alternative functional criteria are s...

Prediction of Employment Status Choice Intentions

The present research applied the theory of planned behavior to predict employment status choice, defined as the intention to enter an occupation as a wage or salaried individual...

A stagewise rejective multiple test procedure based on a modified Bonferroni test

Journal Article A stagewise rejective multiple test procedure based on a modified Bonferroni test Get access G. HOMMEL G. HOMMEL Institut für Medizinische Statistik und Dokument...

MicroRNA profiling reveals distinct signatures in B cell chronic lymphocytic leukemias

Little is known about the expression levels or function of micro-RNAs (miRNAs) in normal and neoplastic cells, although it is becoming clear that miRNAs play important roles in ...

How Big Is the Random Walk in GNP?

This paper presents a measure of the persistence of fluctuations in gross national product (GNP) based on the variance of its long differences. That measure finds little long-te...

Can You See the Real Me? Activation and Expression of the “True Self” on the Internet

Those who feel better able to express their “true selves” in Internet rather than face‐to‐face interaction settings are more likely to form close relationships with people met o...

Alternative factor specifications, security characteristics, and the cross-section of expected stock returns1We are especially grateful to Eugene Fama (a referee), an anonymous referee and Bill Schwert (the editor) for insightful and constructive suggestions. We also thank Wayne Ferson, Ken French, Will Goetzmann, Craig Holden, Ravi Jagannathan, Bob Jennings, Bruce Lehmann, Josef Lakonishok, Richard Roll, participants at the 1997 Meetings of the Western Finance Association, the 1997 UCLA/USC/UC Irvine conference, the November 1997 Asset Pricing Meeting of the National Bureau of Economic Research, the Atlanta Forum, and seminars at Columbia, Indiana, Florida, New York, Tulane, and Yale Universities; Eugene Fama and Ken French for providing part of the data used in this study; and Christoph Schenzler for excellent programming assistance. The second author acknowledges support from the Dean's Fund for Research and the Financial Markets Research Center at Vanderbilt University. We are responsible for remaining errors. This paper was formerly titled `A Re-Examination of Security Return Anomalies'.1

HOGWILD!: A Lock-Free Approach to Parallelizing Stochastic Gradient Descent

Stochastic Gradient Descent (SGD) is a popular algorithm that can achieve state-of-the-art performance on a variety of machine learning tasks. Several researchers have recently ...

Nested clade analyses of phylogeographic data: testing hypotheses about gene flow and population history

Since the 1920s, population geneticists have had measures that describe how genetic variation is distributed spatially within a species’ geographical range. Modern genetic surve...

Positive Natural Selection in the Human Lineage

Positive natural selection is the force that drives the increase in prevalence of advantageous traits, and it has played a central role in our development as a species. Until re...

Increased activity of northern vegetation inferred from atmospheric CO2 measurements

Separating population structure from population history: a cladistic analysis of the geographical distribution of mitochondrial DNA haplotypes in the tiger salamander, Ambystoma tigrinum.

Abstract Nonrandom associations of alleles or haplotypes with geographical location can arise from restricted gene flow, historical events (fragmentation, range expansion, colon...