Sprague-Dawley rats subjected 2 months previously to partial resection (10 per cent) of the small intestine and their controls were injected with tritiated thymidine and sacrificed at 2 and 23 hours. Segments of the duodenum, jejunum, and ileum were autoradiographed, and the migration of the labelled cells during the period between 2 and 23 hours was measured with an eyepiece micrometer. The ce...

Introduction The study upon which this paper is based solicited information on school renewal from a purposive sample of principals initially identified using quantitative profiling techniques (Silcox, Cavanagh and Dellar, 2003). Principals were presented with a series of questions that enabled an investigation of their leadership behaviours with respect to school renewal. The principals' respo...

The aim of this paper is to present a systematic modeling of reliability and related measures: availability, maintainability, failure rate, rate of occurrence of failures, mean times, etc., known in the literature under the term dependability. This model includes the continuous and discrete time semi-Markov processes with general state space. This is one of the most general models in reliabilit...

The Iranian government has placed new emphasis on urban renewal through participatory approaches in recent years. The main target areas are called deteriorated urban fabrics, characterized by micro-lots, impenetrability, and lack of sustainability. In Tehran, renovation of deteriorate urban fabrics has been initiated through dedicated neighborhood facilitation offices. This paper analyzes the a...