Towards a Better Modelling and Assessment of Construction Risk: Insights from a Literature Review

This paper reviews the literature of construction risk modelling and assessment. It also reviews the real practice of risk assessment. The review resulted in significant results, summarised as follows. There has been a major shift in risk perception from an estimation variance into a project attribute. Although the Probability–Impact risk model is prevailing, substantial efforts are being put to improving it reflecting the increasing complexity of construction projects. The literature lacks a comprehensive assessment approach capable of capturing risk impact on different project objectives. Obtaining a realistic project risk level demands an effective mechanism for aggregating individual risk assessments. The various assessment tools suffer from low take-up; professionals typically rely on their experience. It is concluded that a simple analytical tool that uses risk cost as a common scale and utilises professional experience could be a viable option to facilitate closing the gap between theory and practice of risk assessment.

A DST-based Approach for Construction Project Risk Analysis

Despite its huge potential in risk analysis, the Dempster–Shafer Theory of Evidence (DST) has not received enough attention in construction management. This paper presents a DST-based approach for structuring personal experience and professional judgment when assessing construction project risk. DST was innovatively used to tackle the problem of lacking sufficient information through enabling analysts to provide incomplete assessments. Risk cost is used as a common scale for measuring risk impact on the various project objectives, and the Evidential Reasoning algorithm is suggested as a novel alternative for aggregating individual assessments. A spreadsheet-based decision support system (DSS) was devised to facilitate the proposed approach. Four case studies were conducted to examine the approach's viability. Senior managers in four British construction companies tried the DSS and gave very promising feedback. The paper concludes that the proposed methodology may contribute to bridging the gap between theory and practice of construction risk assessment.

Psychology and Social Work: Applied Perspectives

Successful social work practice is underpinned by knowledge, theories and research findings from a range of related disciplines, key amongst which is psychology. This timely book offers a grounded and engaging guide to psychology s vital role at the heart of contemporary social work practice. The book skilfully addresses some of the central theoretical developments in psychology from an applied perspective, and explains how these make essential contributions to the methods and theory base of social work in ways that foster critical evaluation and promote best practice. Written by two authors with extensive backgrounds in psychology and social work respectively as well as a deep understanding of the intersections of the two this book delivers a unique synthesis of perspectives and approaches, focusing on their application to the lives of individuals and families. Each chapter contains reflective points and case studies based on contemporary practice realities which are related to the Professional Capabilities Framework for Social Workers and also to the Health and Care Professions Council s Standards of Proficiency. Times have never been more challenging for social work and this book will be an invaluable source of professional support within the ever-more complex psychological worlds where social work takes place. Table of Contents 1. Introduction: The place of psychological knowledge and research in social work training and practice 2. Signposts from Developmental Psychology on Human Development over the Life Course 3. Perspectives from Clinical and Counselling Psychology on Mental Health and Illness 4. Perspectives from Social and Community Psychology: Understanding values, attitudes, diversity and community change 5. Health Psychology: Understanding health, illness, stress and addiction 6. Organizational Psychology: Understanding the individual and the organization in the social work structure 7. Forensic Psychology: Understanding criminal behaviour and working with victims of crime 8. Conclusion References Index

The Day Roads Became Rivers: A GIS-Based Assessment of Flash Floods in Worcester

In the last 4 years Worcester, UK has been hit by several intense convective rainstorms, which caused flash floods outside of existing surface drainage networks. This paper addresses two questions related to such events: Firstly to what extent can the occurrence of flash flood flow accumulation can be determined using only commonly available data and tools, assuming the rainfall events caused mainly surface runoff due to their tropical intensity and the relatively impermeable urban catchment surface? Secondly, are the flood in-cidents in Worcester aggravated by roads serving as preferential flow paths under these conditions? The as-sessment results indicated that roads do not have an influence on the flow path of flash flood rainfall in Worcester. Flow accumulation calculated with a 10m DEM, corresponds well with reported flood incidents. This basic assessment method can be used to inform the implementation of non structural flood mitigation and public awareness.