Given that contractor plays a critical role in any construction project, contractor selection constitutes key decision for public authorities. Prequalification, i.e. the elimination of incompetent contractors from the bidding process according to a predetermined set of criteria, is a frequently practiced procedure in many countries, including Greece. In order to enhance the performance levels o...

Contractor renormalization (CORE) is a real-space renormalization-group method to derive effective Hamiltionians for microscopic models. The original CORE method is based on a real-space decomposition of the lattice into small blocks and the effective degrees of freedom on the lattice are tensor products of those on the small blocks. We present an extension of the CORE method that overcomes thi...

The paper outlines the findings of an investigation into the use of dayworks sheets by a UK National Management Contractor. The investigation was carried out using interview techniques and ethnographic research to gain an insight into how practicing quantity surveyors conceived of the use of dayworks sheets. The use of dayworks sheets in construction contracting is both widespread and widely ac...

With the continuous development of construction industry, current production mode is gradually transforming into contractor, professional subcontractor and labor subcontractor’s “main-sub contractor” cooperative in market segmentation. Long-term cooperation between contractors subcontractors beneficial to both parties, yet only limited research has explored factors that determine contractors’ w...

Construction contractors significantly contribute to the progress and success of projects. Contractor prequalification grants tendering rights only competent contractors. The bidding process is one most critical phases in construction industry. project leader must assess general, technical, financial information prepare an accurate proposal select best contractor. In this study, contractor cons...

In forest operations, the interface between forest companies and harvesting contractors is of special importance, considering that it is the first link in the forest industry’s supply chains. Supply operations account for a significant share of the final costs of wood products (up to 50%). This study investigates the effect of customer–contractor alignment on contractors’ profit margins and on ...