OR Insight http://www.palgrave-journals.com/ori/current_issue/ Palgrave Macmillan Ltd en OR Insight 0953-5543 rights@palgrave.com OR Insight http://www.palgrave-journals.com/pal/images/logos_b_o_w/ori.gif http://www.palgrave-journals.com/ori/ Editorial http://dx.doi.org/10.1057/ori.2013.11 Editorial Alistair Clark Tolga Bektas Jim Freeman doi:10.1057/ori.2013.11 OR Insight 26, 219 (December 2013) OR Insight An extended rolling stock problem with empty trains timetabling through a heuristic approach http://dx.doi.org/10.1057/ori.2013.4 An extended rolling stock problem with empty trains timetabling through a heuristic approach railways rolling stock optimization timetabling empty trains heuristics Natalia Ibáñez-Herrero Álvaro García-Sánchez Miguel Ortega-Mier Francisco Javier Diego-Martín doi:10.1057/ori.2013.4 OR Insight 26, 220 (December 2013) July 31, 2013 OR Insight July 31, 2013 Do more forecasts always improve averages of model forecasts? Evidence from reports published by HM Treasury http://dx.doi.org/10.1057/ori.2013.5 Do more forecasts always improve averages of model forecasts? Evidence from reports published by HM Treasury averages of model forecasts forecast errors semiparametric models Antonis A Michis doi:10.1057/ori.2013.5 OR Insight 26, 234 (December 2013) August 14, 2013 OR Insight August 14, 2013 Assessment of projects, portfolios and dissertations: Achieving equity http://dx.doi.org/10.1057/ori.2013.6 Assessment of projects, portfolios and dissertations: Achieving equity assessment dissertation double-marking statistical modelling Jim Freeman Bland Tomkinson doi:10.1057/ori.2013.6 OR Insight 26, 242 (December 2013) August 21, 2013 OR Insight August 21, 2013 Factors that affect the adoption of Enterprise Risk Management (ERM) http://dx.doi.org/10.1057/ori.2013.7 Factors that affect the adoption of Enterprise Risk Management (ERM) Enterprise Risk Management (ERM) risk perception risk culture ERM framework decision-support tool Shahzeb Ali Malik Barry Holt doi:10.1057/ori.2013.7 OR Insight 26, 253 (December 2013) September 4, 2013 OR Insight September 4, 2013 When spreadsheets go bad http://dx.doi.org/10.1057/ori.2013.8 When spreadsheets go bad spreadsheets modeling prototyping limitations Andrew Tait Kurt A Richardson doi:10.1057/ori.2013.8 OR Insight 26, 270 (December 2013) October 23, 2013 OR Insight October 23, 2013 Challenging official estimates of carbon dioxide emissions and fuel economy for passenger cars in the United Kingdom http://dx.doi.org/10.1057/ori.2013.9 Challenging official estimates of carbon dioxide emissions and fuel economy for passenger cars in the United Kingdom environment transport carbon emissions passenger cars Giles Hindle Adam Hindle Anthony Hindle doi:10.1057/ori.2013.9 OR Insight 26, 278 (December 2013) October 9, 2013 OR Insight October 9, 2013 A code of best practice for judgement-based operational research http://dx.doi.org/10.1057/ori.2013.10 A code of best practice for judgement-based operational research problem structuring soft operational research judgement-based analysis Diederik J D Wijnmalen Neville J Curtis doi:10.1057/ori.2013.10 OR Insight 26, 291 (December 2013) October 9, 2013 OR Insight October 9, 2013