Analysis of the report of a Committee of the House of commons on the extinction of slavery.

Mode of access: Internet.

A speech delivered on the 24th of May, 1822, before the General Assembly of the Church of Scotland : explanatory of the measures which have been successfully pursued in St. John's Parish, Glasgow, for the extinction of its compulsory pauperism : with an appendix /

Mode of access: Internet.

Specimens of Arabian poetry, from the earliest time to the extinction of the khaliphat, with some account of the authors.

Poems in English and Arabic

Specimens of Arabian poetry : from the earliest time to the extinction of the khaliphat, with some account of the authors.

Poems in English and Arabic.

The extinction of the defective delinquent, a working program ...

"A paper read before the American Prison Association at Baltimore, November 12th, 1912."

At the crossroads--extinction or survival : proceedings, Kirtland's Warbler Symposium, Februrary 9-11, 1989, Lansing, Michigan.

Shipping list no.: 90-030-P.

School history of Rome, from the foundation of the city to the extinction of the empire of the West.

Mode of access: Internet.

Beautés de l'histoire des croisades, et des différens ordres religieux et militaires, qui en sont nés, depuis leur origine jusqu'a leur extinction. A l'usage de la jeunesse,

Mode of access: Internet.

Colonial slavery. Letters to the Right Hon. William Huskisson, President of the Board of Trade, &c., &c. on the present condition of the slaves, and the means best adapted to promote the mitigation and final extinction of slavery in the British colonies.

Mode of access: Internet.

Specimens of Arabian poetry, from the earliest time to the extinction of the Khaliphat with some account of the authors [microform] /

Arabic and English.

The Society of Shakers. Rise, progress and extinction of the society at Cleveland, O.

Bibliography: p. 114-116.

Recherches experimentales sur la dispersion rotatoire ; Etude numerique sur les relations entre le coefficient critique et le volume moleculaire /

Thesis (doctoral)--Universite de Geneve.

Des modes d'extinction de l'action en responsabilité née du contrat de transport de marchandises par voie de terre (articles 105 et 108 du code de commerce) modifiés par la loi du 11 avril 1888 ...

Thèse--Univ. de Toulouse.

Protocols for listing threatened species can forecast extinction

Risk-ranking protocols are used widely to classify the conservation status of the world's species. Here we report on the first empirical assessment of their reliability by using a retrospective study of 18 pairs of bird and mammal species (one species extinct and the other extant) with eight different assessors. The performance of individual assessors varied substantially, but performance was improved by incorporating uncertainty in parameter estimates and consensus among the assessors. When this was done, the ranks from the protocols were consistent with the extinction outcome in 70-80% of pairs and there were mismatches in only 10-20% of cases. This performance was similar to the subjective judgements of the assessors after they had estimated the range and population parameters required by the protocols, and better than any single parameter. When used to inform subjective judgement, the protocols therefore offer a means of reducing unpredictable biases that may be associated with expert input and have the advantage of making the logic behind assessments explicit. We conclude that the protocols are useful for forecasting extinctions, although they are prone to some errors that have implications for conservation. Some level of error is to be expected, however, given the influence of chance on extinction. The performance of risk assessment protocols may be improved by providing training in the application of the protocols, incorporating uncertainty in parameter estimates and using consensus among multiple assessors, including some who are experts in the application of the protocols. Continued testing and refinement of the protocols may help to provide better absolute estimates of risk, particularly by re-evaluating how the protocols accommodate missing data.

Extinction times for a general birth, death and catastrophe process

The birth, death and catastrophe process is an extension of the birth-death process that incorporates the possibility of reductions in population of arbitrary size. We will consider a general form of this model in which the transition rates are allowed to depend on the current population size in an arbitrary manner. The linear case, where the transition rates are proportional to current population size, has been studied extensively. In particular, extinction probabilities, the expected time to extinction, and the distribution of the population size conditional on nonextinction (the quasi-stationary distribution) have all been evaluated explicitly. However, whilst these characteristics are of interest in the modelling and management of populations, processes with linear rate coefficients represent only a very limited class of models. We address this limitation by allowing for a wider range of catastrophic events. Despite this generalisation, explicit expressions can still be found for the expected extinction times.