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With the increasing complexity of modern construction projects, there is a pressing need on higher degree of assistance from computer in order to accomplish effective planning and management. This paper delineates the previous development and implementation of a prototype four-dimensional site management model (4DSMM), with the objectives to address the(More)
BACKGROUND Obsessive-compulsive behaviours are common and disabling in autistic-spectrum disorders (ASD) but little is known about how they compare with those experienced by people with obsessive-compulsive disorder (OCD). AIM To make such a comparison. METHOD A group of adults with high-functioning ASD (n=40) were administered the Yale-Brown(More)
Abstr act. The choice of good construction site layout is inherently difficult, yet has a significant impact on both monetary and time saving. It is desirable to encapsulate systematically the heuristic expertise and empirical knowledge into the decision making process by applying the latest artificial intelligence technology. This paper describes a(More)
BACKGROUND The evidence base for the efficacy of cognitive behaviour therapy (CBT) for treating body dysmorphic disorder (BDD) is weak. AIMS To determine whether CBT is more effective than anxiety management (AM) in an outpatient setting. METHOD This was a single-blind stratified parallel-group randomised controlled trial. The primary endpoint was at 12(More)
OBJECTIVES To investigate whether prolonged compulsive mirror-gazing in body dysmorphic disorder (BDD) is characterized by the prioritization of internally referenced (internal) goals for the mirror session, such as feeling right about one's make-up or shaven face, over externally referenced (external) goals, such as seeing that one's make-up is applied, or(More)
Body dysmorphic disorder (BDD) is thought to be etiologically related to obsessive-compulsive disorder (OCD) but the available evidence is incomplete. The current study examined the genetic and environmental sources of covariance between body dysmorphic and obsessive-compulsive symptoms in a community sample of adult twins. A total of 2,148 female twins(More)
Individuals with Body Dysmorphic Disorder (BDD) are preoccupied with perceived defects in their appearance that are not visible to others. An excessive focus and processing of details has been proposed as a possible mechanism underlying this distorted self-image in BDD. The nature and extent of visuoperceptual abnormalities in BDD however require further(More)
Cognitive-behavioural models of body dysmorphic disorder (BDD) suggest that mirrors can act as a trigger for individuals with BDD, resulting in a specific mode of cognitive processing, characterised by an increase in self-focussed attention and associated distress. The aim of the current study was to investigate these factors experimentally by exposing(More)
  • K. W. ChauT, M. Anson, D. D. De Saram
  • 2005
The performance of any system can only be gauged by practical applications. This paper delineates some insight and experience on the on-site use of a prototype four-dimensional (4D) site management software system for a warehouse superstructure in Hong Kong. It links a three-dimensional model and a construction schedule to furnish visualization of the state(More)