风险与无常

在科学的边界上我们并不是始终能知道将会发生些什么?     

Critical systems heuristics: Application of an emancipatory approach for police strategy toward the carrying of offensive weapons

Critical systems heuristics (CSH) is explored in this article. It is an emancipatory approach to problem solving. Its philosophy and principles are presented. Methodological guidelines and an application for police strategy toward the carrying of offensive weapons are given. A critique of the philosophy, principles and methodology is provided. Room is left for the reader to extend our analysis. The aim of the article is to initiate the use of CSH and to encourage people to help to develop this and other emancipatory approaches.     

High poly A content of the native genome of murine oncornaviruses : presence of 65-70 S RNA lacking polyadenylic sequences]

High molecular weight Poly (A) minus RNA was isolated from native genome of murine oncornaviruses. The Poly (A) content of viral genomes seems to depend more on cellular multiplication than viral maturation.     

Forecasting vehicle holdings and usage with a disaggregate choice model

A case study in which a three-stage choice model of Canadian household vehicle holdings and usage is used to generate short-run forecasts of changes in household vehicle usage and gasoline consumption in response to a range of energy-related policies. The objectives of this case study are to (1) demonstrate the application of disaggregate choice modelling methods to the generation of policy-relevant forecasts of travel behaviour; (2) draw implications from this forecasting exercise concerning the likely impacts of various energy-related policies; and (3) assess some of the strengths and weaknesses of the current state-of-the-art of forecasting with disaggregate choice models, using the presented study as a case in point.     

Editorial

Systemic Practice and Action Research -