Investigation of damage and repair of a 1000 MTD horizontal ammonia converter

An operational upset caused by a diapharagm failure in the high pressure casting of the synthesis gas compressor resulted in major pressure/flow surges in the synthesis loop.     

Defensible Space on the Move: Revisiting the Urban Geography of Alice Coleman

This article traces the movement of the concept of ‘defensible space’ from New York City in the 1970s, where it was developed by the Canadian architect/planner Oscar Newman, to London in the 1980s and into design interventions in British public housing in the 1990s, through British geographer Alice Coleman, who acted as an especially powerful transfer agent. In focusing on this urban design ‘concept’ on the move we contribute to existing scholarship on policy mobility and city building in a number of ways. First, we explore an instance of the movement/mobility of a planning concept in a historical period (the recent past) largely overlooked to date. Secondly, we demonstrate that this movement was the result of a disaggregated series of expert knowledge transfers and localized translations of pre‐policy expert knowledge, generated through university‐based research work and networks. We theorize this instance of urban planning mobility by way of the interlinked insights offered by the sociology of science and policy‐mobilities literatures. As this is an instance of university research shaping public policy it also offers an opportunity to reflect upon the meaning of ‘evidence‐based policy’ and the impact agenda in contemporary higher education.     

Conditioning manager alphas on economic information: another look at the persistence of performance

This article presents evidence on persistence in the relativeinvestment performance of large, institutional equity managers.Similar to existing evidence for mutual funds, we find persistentperformance concentrated in the managers with poor prior-periodperformance measures. A conditional approach, using time-varyingmeasures of risk and abnormal performance, is better able todetect this persistence and to predict the future performanceof the funds than are traditional methods.     

Regulatory Impact Assessment and the Economic Transition to Markets

In most developing and transition economies, far-reaching legal and regulatory reforms are essential for a successful transition to market-led economic development. One of the most important capacities of a market regulator is the ability to assess the market impacts of a regulation before it is adopted. Regulatory impact analysis (RIA) is a tool now used in most developed countries to improve understanding of the economic and social welfare impacts of a law and other forms of regulation. This article argues that institutional reforms aimed at good governance are at the core of the development process, that RIA can contribute to the quality of legal reforms and support other good governance goals, and that RIA can be implemented step-by-step by building on existing practices and investing in skills and training.