David Stevens

The Devil’s Long Tail: Religious Moderation and Extremism on the Web (2009)

O'Hara, Kieron, Stevens, David

Adam Smith’s Wealth of Nations first suggested that an unfettered religious market leads to a multitude of small sects and away from monopolistic churches. ‘Strict’ or ‘extreme’ religious...

The Devil’s Long Tail: Religious Moderation and Extremism on the Web (2009)

O'Hara, Kieron, Stevens, David

Adam Smith’s Wealth of Nations offers a striking observation about religious groups: An unfettered religious market leads to a multitude of small sects and away from monopolistic churches....

An atom interferometer for measuring loss of coherence from an atom mirror (2004)

Esteve, Jerome, Stevens, David, Aussibal, Christine, Westbrook, Nathalie, Aspect, Alain, Westbrook, Christoph

We describe an atom interferometer to study the coherence of atoms reflected from an evanescent wave mirror. The interferometer is sensitive to the loss of phase coherence induced by the defects in...

An atom interferometer for measuring loss of coherence from an atom mirror (2004)

Esteve, Jerome, Stevens, David, Aussibal, Christine, Westbrook, Nathalie, Aspect, Alain, Westbrook, Christoph

We describe an atom interferometer to study the coherence of atoms reflected from an evanescent wave mirror. The interferometer is sensitive to the loss of phase coherence induced by the defects in...

Jobs, workers and changes in earnings dispersion (2001)

Burgess, Simon, Lane, Julia, Stevens, David

The ''fractal'' nature of the rise in earnings dispersion is one of its key features and remains a puzzle. In this paper, we offer a new perspective on the causes of changes in earnings dispersion,...

Jobs, workers and changes in earnings dispersion (2001)

Burgess, Simon, Lane, Julia, Stevens, David

The ''fractal'' nature of the rise in earnings dispersion is one of its key features and remains a puzzle. In this paper, we offer a new perspective on the causes of changes in earnings dispersion,...

Small Scale Processes and Entrainment in a Stratocumulus Marine Boundary Layer (1998)

David Stevens, John B. Bell, Ann S. Almgren, Vince E. Beckner, Charles A. Rendleman

Numerical studies of boundary layer meteorology are increasingly relying on large eddy simulation (LES) models, but few detailed validation studies of these types of models have been done. In this...

A Forward-in-Time Advection Scheme and Adaptive Multilevel Flow Solver for Nearly Incompressible Atmospheric Flow (1996)

Christopher S. Bretherton, David Stevens, David E. Stevens

This paper presents a new forward-in-time advection method for nearly incompressible flow, MU, and its application to an adaptive multilevel flow solver for atmospheric flows. MU is a modification of...

Variable Substitution with Iconic Combinators (1993)

David Stevens School, David Stevens

. An iconic notation for representing combinators is introduced, and the extensions of combinatory logic needed to work with it are developed. It is shown how entire sets of combinators can be...

Improving Bracket Abstraction - A Cost Free Optimization (1991)

David Stevens

ion A Cost Free Optimization Technical Report CSIRP-91-3 David Stevens, School of Computer Science, University of Birmingham. D.J.Stevens@cs.bham.ac.uk 11 November 1991 Abstract This report describes...

Job Flows, Worker Flows, and Churning.

Burgess, Simon, Lane, Julia, Stevens, David

We utilize a large employer-level panel dataset to explore the links between gross job flows and gross worker flows. Our findings have relevance for models of job creation and job destruction, and...

Changing Caseloads: Macro Influences and Micro Composition

Robert A. Moffitt, David Stevens

Studies of the types of women who are still on the welfare rolls, subsequent to welfare reform, are less common than studies of the types of women who have left the rolls. The conventional wisdom is...

Welfare-to-Work Policy: Employer Hiring and Retention of Former Welfare Recipients

Julia Lane, David Stevens

The focus of the new U.S. welfare reform legislation is to move welfare recipients into jobs. There is widespread agreement that at least three components of this transition should be reflected in...

How to secure an effective health and safety programme at work

Dawson, Sandra, Poynter, Philip, Stevens, David

The Health and Safety at Work Act 1974 established self regulation, albeit within specific substantive statutory requirements laid out in previous legislation, as the basis for further developments...

Welfare-to-Work Outcomes: The Role of the Employer

Julia Lane, David Stevens

This paper sets out to explore the role of the employer in successful welfare-to-work transitions. We demonstrate the uses of administrative records in identifying the types of firms that repeatedly...

Jobs, Workers and Changes in Earnings Dispersion

Simon Burgess, Julia Lane, David Stevens

The 'fractal' nature of the rise in earnings dispersion is one of its key features and remains a puzzle. In this paper, we offer a new perspective on the causes of changes in earnings dispersion,...

Publication guidelines for quality improvement studies in health care: evolution of the SQUIRE project

Davidoff, Frank, Batalden, Paul, Stevens, David, Ogrinc, Greg, Mooney, Susan E

In 2005 we published draft guidelines for reporting studies of quality improvement, as the initial step in a consensus process for development of a more definitive version. The current article...