Editorial.

The article introduces a series of papers about construction management and economics. The first paper examines multicriteria models used in operations research. The authors found that the state of the art is to combine a utility function with a social-welfare function. The second paper investigates the housebuilding industry in Korea. The third paper presents an evaluation method for monitoring the performance of health care facilities. The method comprises component performance, building systems performance and a high-level Building Performance Indicator. The fourth paper describes a method that addresses weaknesses related to company-level dynamic cash flow. The fifth paper proposes a less restrictive approach to measure total factor productivity growth for the construction industry. The sixth paper analyzes the relationship between the construction sector and economic development in Taiwan. The seventh paper analyzed the kinds of accidents that occur in materials handling at construction sites. The eighth paper describes the development and the validation of a neural network model to help contractors in deciding whether or not to bid. The ninth paper investigates the relationship between the characteristics of construction personnel and their recognition of safety signs and symbols.