Radio Frequency Identification in Construction Operation and Maintenance:Contextual Analysis of User Needs

Abstract: As early as in 1995 it was stated that automatic identification of objects using RFID was a promis-ing technology for the construction industry. However, 13 years later the applications of RFID in the con-struction industry are rare and mostly used in prototype projects or used for theft prevention and access control. Recently maintenance applications have been proposed to hold the trigger needed to launch RFID more widely in the construction sector. Therefore the purpose of the research presented in this paper is to identify the actual user needs for automatic identification in construction operation and maintenance. Re-search results from a contextual design process are presented and supplemented with practical experiences from implementing an RFID-supported operation and maintenance system. The greatest obstacles for suc-cessful implementation of RFID-based O&M systems have been found in structuring working processes and information rather than in making the hardware work

Towards Linking Virtual Models with Physical Objects in Construction using RFID:Review of Ontologies

Virtual models have in recent years proven their worth in practice relating to building design. Today virtual models of the complete project are created before the project is carried out in practice. The immediate advantages of this are great; it introduces fewer errors, gives a better production basis, improved clarity and enhanced communication methods compared to traditional 2D drafting methods. However, there is still much unutilized potential in the virtual models, especially in the construction and operation phases. It is expected that a digital link between the virtual models and the physical objects in the construction process can improve the information and knowledge handling from design to construction, operation and maintenance. The link can be created by use of Radio Frequency Identification (RFID) technology. This paper describes a review and assessment of existing ontologies relevant in relation to creating this link. The ontologies are categorised according to their applicability to specify technical services, resources, organisational relations, business processes and overall frameworks for ontology descriptions and their relations. It is concluded that, with few modifications the technical service and resource ontologies are applicable for industrial use and the meta, organisational and business process ontologies needs further development and industrial maturity to be applicable. KEYWORDS

What is the role of clinical tests and ultrasound in acetabular labral tear diagnostics?

Background and purpose An acetabular labral tear is a diagnostic challenge. Various clinical tests have been described, but little is known about their diagnostic sensitivity and specificity. We investigated the diagnostic validity of clinical tests and ultra-sound as compared with MR arthrography

Ten general principles

We argue, due to the conspicuous failure of Washington Consensus-guided reforms in most part of the developing world in 1990s and the outbreak of the current global financial crisis, Washington Consensus, as a general term of the neoliberal free market economic thinking, has been withering. In the meantime, Chinese economic model has gain wide recognition and praise worldwide. Joshua C. Ramo coined the term of Beijing Consensus as an alternative approach to economic development for developing nations. There has been hot debate on the notion of Beijing Consensus. We argue even though there are some problems in Ramo’s original definition of Beijing Consensus, we should not reject this notion altogether. Instead, we should try to come up with better conceptualizations of this term. In this paper, we sum up ten general principles of the Chinese development model as our new definition of the Beijing Consensus

Patient-reported outcome and muscle-tendon pain after periacetabular osteotomy are related:1-year follow-up in 82 patients with hip dysplasia

Background and purpose — Larger prospective studies investigating periacetabular osteotomy (PAO) with patient-reported outcome measures developed for young patients are lacking. We investigated changes in patient-reported outcome (PRO), changes in muscle–tendon pain, and any associations between them from before to 1 year after PAO. Patients and methods — Outcome after PAO was investigated in 82 patients. PRO was investigated with the Copenhagen Hip and Groin Outcome Score (HAGOS). Muscle–tendon pain in the hip and groin region was identified with standardized clinical tests, and any associations between them were analyzed with multivariable linear regressions. Results — HAGOS subscales improved statistically significantly from before to 1 year after PAO with effect sizes ranging from medium to very large (0.66–1.37). Muscle–tendon pain in the hip and groin region showed a large decrease in prevalence from 74% (95% CI 64–83) before PAO to 35% (95% CI 25–47) 1 year after PAO. Statistically significant associations were observed between changes in HAGOS and change in the sum of muscle–tendon pain, ranging from –4.7 (95% CI –8.4 to –1.0) to –8.2 (95% CI –13 to –3.3) HAGOS points per extra painful entity across all subscales from before to 1 year after PAO. Interpretation — Patients with hip dysplasia experience medium to very large improvements in PRO 1 year after PAO, associated with decreased muscle–tendon pain. The understanding of hip dysplasia as solely a joint disease should be reconsidered since muscle–tendon pain seems to play an important role in relation to the outcome after PAO. Trial registration: ClinicalTrials.gov identifier: 20140401PAO