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Allee Effects in Ecology and Conservation

Franck Courchamp, Ludek Berec, and Joanna Gascoigne

Published in print:
2008
Published Online:
May 2008
ISBN:
9780198570301
eISBN:
9780191717642
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198570301.001.0001
Subject:
Biology, Biodiversity / Conservation Biology

Allee effects are broadly defined as a decline in individual fitness at low population size or density, that can result in critical population thresholds below which populations crash to extinction. ... More


Dragonflies and Damselflies: Model Organisms for Ecological and Evolutionary Research

Alex Córdoba-Aguilar (ed.)

Published in print:
2008
Published Online:
September 2008
ISBN:
9780199230693
eISBN:
9780191710889
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199230693.001.0001
Subject:
Biology, Ecology, Animal Biology

This book is a collection of nineteen chapters where summaries of major ecological and evolutionary questions have been asked and responded using dragonflies and damselflies as study subjects. Each ... More


The Dissertation: From Beginning to End

Peter Lyons and Howard J. Doueck

Published in print:
2009
Published Online:
February 2010
ISBN:
9780195373912
eISBN:
9780199865604
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195373912.001.0001
Subject:
Social Work, Research and Evaluation

This book is intended to be read at any stage in the dissertation process, but will be particularly useful in the early stages of preparation for a social work dissertation, and as a reference ... More


Determining Sample Size: Balancing Power, Precision, and Practicality

Patrick Dattalo

Published in print:
2008
Published Online:
January 2009
ISBN:
9780195315493
eISBN:
9780199865475
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195315493.001.0001
Subject:
Social Work, Research and Evaluation

Sample size determination is an important and often difficult step in planning an empirical study. From a statistical perspective, sample size depends on the following factors: type of analysis to be ... More


Predicting Party Sizes: The Logic of Simple Electoral Systems

Rein Taagepera

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.001.0001
Subject:
Political Science, Democratization

For a given electoral system, what average number and size distribution of parties can we expect? This book makes specific predictions that agree with world averages. The basic factors are assembly ... More


Introduction

Richard Coopey and Donald Clarke

in 3i Fifty Years Investing in Industry

Published in print:
1995
Published Online:
October 2011
ISBN:
9780198289449
eISBN:
9780191684708
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198289449.003.0001
Subject:
Business and Management, Business History

This chapter provides a historical perspective of the development of 3i and its impact on British industry. The institution, established initially as the Industrial and Commercial Finance Corporation ... More


The Mean Duration of Cabinets

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0010
Subject:
Political Science, Democratization

Again the quantity to watch is the ‘seat product’. The inverse square law of cabinet durations says that the mean cabinet duration in a country is approximately forty-two years divided by the square ... More


How to Simplify Complex Electoral Systems

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0011
Subject:
Political Science, Democratization

Resistance to simplifying a complex electoral system is at its least when the existing number and size of parties are not altered. The existing effective number of parties is most likely to be ... More


Size and Politics

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0012
Subject:
Political Science, Democratization

The cube root law of assembly sizes applies to first or only chambers. It says that assembly size is approximately the cube root of the country's population, because this size minimizes the workload ... More


The Law of Minority Attrition

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0013
Subject:
Political Science, Democratization

The more important levels have fewer positions, and the share of minorities goes down. The law of minority attrition is a quantitatively predictive logical model that expresses it more precisely. A ... More


The Institutional Impact on Votes and Deviation from PR

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0014
Subject:
Political Science, Democratization

Using nothing but the product of assembly size and district magnitude, a quantitatively predictive logical model allows us to estimate the average effective number of parties based on votes. Average ... More


Thresholds of Representation and the Number of Pertinent Electoral Parties

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0015
Subject:
Political Science, Democratization

The nationwide threshold of minimal representation is the average vote share needed to win one seat in the assembly. It is close to 38% divided by the square root of the seat product (assembly size ... More


Seat Allocation in Federal Second Chambers and the Assemblies of the European Union

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0016
Subject:
Political Science, Democratization

The number of seats in the European Parliament roughly equals the cube root of the population of the European Union. This theoretically based ‘cube root law of assembly sizes’ also fits most national ... More


How Electoral Systems Matter

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0001
Subject:
Political Science, Democratization

An electoral system helps determine the number and size distribution of parties in a country, as well as cabinet duration. Electoral systems are expressed in electoral laws. Their impact depends on ... More


Electoral Systems—Simple and Complex

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0003
Subject:
Political Science, Democratization

To allocate seats to candidates or parties, even a simple electoral system must specify at least the following: the total number of seats in the assembly (assembly size); the number of seats ... More


The Number and Balance of Parties

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0004
Subject:
Political Science, Democratization

When some parties have many seats and some have few, we need a meaningful ‘effective’ number of parties so as to compare the effects of electoral systems on party systems. The standard way to express ... More


Openness to Small Parties: The Micro‐Mega Rule and the Seat Product

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0006
Subject:
Political Science, Democratization

The micro-mega rule says that for representation of small parties, it helps to have large assembly sizes, large district magnitudes, and large quotas or large gaps between divisors in seat allocation ... More


The Duvergerian Agenda

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0007
Subject:
Political Science, Democratization

Starting with the characteristics of the electoral systems, the ‘Duvergerian agenda’ aims at predicting the average seat and vote share distributions of parties, the effective number of parties, and ... More


The Number of Seat‐Winning Parties and the Largest Seat Share

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0008
Subject:
Political Science, Democratization

The quantity to watch is the ‘seat product’ — the product of the assembly size and district magnitude. The number of parties represented in the assembly is approximately the fourth root of the seat ... More


Seat Shares of All Parties and the Effective Number of Parties

Rein Taagepera

in Predicting Party Sizes: The Logic of Simple Electoral Systems

Published in print:
2007
Published Online:
September 2007
ISBN:
9780199287741
eISBN:
9780191713408
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199287741.003.0009
Subject:
Political Science, Democratization

As with Chapter 8, the ‘seat product’ is the important quantity to watch. The effective number of parties represented in the assembly is approximately the sixth root of the seat product. The average ... More


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