Interannual differences in larval haddock survival: hypothesis testing with a 3D biophysical model of Georges Bank

A Coupled Individual-Based Trophodynamics and Circulation Model for Studies of Larval Cod and Haddock on Georges Bank

This year, 1994, marks the 80th anniversary of the publication of a landmark paper in the study of marine fish population dynamics. In 1914, Hjort outlined two of the dominant hypotheses that continue to guide research into the causes of fluctuations in fish populations: 1) recruitment variability is governed by food-limitation of the larval stages; and, 2) recruitment variability is regulated ...

Nonparametric hypothesis testing in clustered survival model

Nonparametric hypothesis testing procedures based on the bootstrap were developed in testing for constant clustering effect in a survival model that incorporates the clustering effect into the Cox Proportional Hazards model. In a clustered survival model, bootstrap estimators of the cluster-specific parameters are consistent. Simulation studies indicate that the procedure is correctly-sized and...

Implications of the 1981 Georges Bank and Gulf of Maine Cod and Haddock Assessments for Future Management Strategies

Bayesian Fuzzy Hypothesis Testing with Imprecise Prior Distribution

This paper considers the testing of fuzzy hypotheses on the basis of a Bayesian approach. For this, using a notion of prior distribution with interval or fuzzy-valued parameters, we extend a concept of posterior probability of a fuzzy hypothesis. Some of its properties are also put into investigation. The feasibility and effectiveness of the proposed methods are also cla...

HYPOTHESIS TESTING FOR AN EXCHANGEABLE NORMAL DISTRIBUTION

Consider an exchangeable normal vector with parameters ????2, and ?. On the basis of a vector observation some tests about these parameters are found and their properties are discussed. A simulation study for these tests and a few nonparametric tests are presented. Some advantages and disadvantages of these tests are discussed and a few applications are given.