Small pelagic fishes particularly anchovy (Encrasicholina punctifer) and sardine (Sardinella sindensis) have an important role to support the Iranian fisheries, and are distributed along the entire length of the Persian Gulf and Oman Sea coastal waters. Using small pelagic fisheries logbook, a GIS-based environmental modelling approach was applied to investigate the presence and abundance of an...

knowledge about low flow statistics is essential for effective water resource planning and management in ungauged orpoorly gauged catchment areas, especially in arid and semi-arid regions such as iran. we employed a data set of 20 riverflow time-series from the iranian central plateau river basin, iran to evaluate the low-flow series using several frequencyanalysis methods and compared the resu...

Numerical probabilities (associated with propositions) are eliminated in favor of qualitative notions, with an eye to isolating what it is about probabilities that is essential to judgements of acceptability. A basic choice point is whether the conjunction of two propositions, each (separately) acceptable, must be deemed acceptable. Concepts of acceptability closed under conjunction are analyze...

Exact simulation approaches for a class of diffusion bridges have recently been proposed based on rejection sampling techniques. The existing rejection sampling methods may not be practical due to small acceptance probabilities. This paper proposes an adaptive approach which improves the existing methods significantly under certain scenarios. The idea of the new method is based on a layered pro...

We construct Cheeger-type bounds for the second eigenvalue of a substochastic transition probability matrix in terms of the Markov chain’s conductance and metastability (and vice-versa) with respect to its quasi-stationary distribution, extending classical results for stochastic transition matrices.

We consider a stochastic version of the k-server problem, in which k servers move on a circle to satisfy randomly generated requests. The requests are independent and identically distributed, according to an arbitrary distribution that is either discrete or continuous. The cost of serving a request is the distance that a server needs to travel in order to reach the request. The goal is to minim...

We present the first class of perfect sampling (also known as exact simulation) algorithms for the steady-state distribution of non-Markovian loss systems. We use a variation of Dominated Coupling From The Past. We first simulate a stationary infinite server system backwards in time and analyze the running time in heavy traffic. In particular, we are able to simulate stationary renewal marked p...

PURPOSE: The purpose of this technical note is to show how a probability tree can be used to structure consideration of uncertainties surrounding zebra mussel dispersal. Probability trees are diagrammatic tools often used as part of formal decision analysis (Clemens and Reilly 2001). This particular tree considers uncertainties about the spread of zebra mussels to Bayou Bartholomew in light of ...

Gaussian particles provide a flexible framework for modelling and simulating three-dimensional star-shaped random sets. In our framework, the radial function of the particle arises from a kernel smoothing, and is associated with an isotropic random field on the sphere. If the kernel is a von Mises–Fisher density, or uniform on a spherical cap, the correlation function of the associated random f...

Reconstruction of a multidimensional scenery with a branching random walk HEINRICH MATZINGER, ANGELICA PACHON AND SERGUEI POPOV 651 Optimal Skorokhod embedding given full marginals and Azéma–Yor peacocks SIGRID KÄLLBLAD, XIAOLU TAN AND NIZAR TOUZI 686 Chi-square approximation by Stein’s method with application to Pearson’s statistic ROBERT E. GAUNT, ALASTAIR M. PICKETT AND GESINE REINERT 720 On...