1,721,049 research outputs found
The effect of project information on the accuracy of building price forecasts
No full textA fundamental proposition is that the accuracy of the designer's tender price forecasts is positively correlated with the amount of information available for that project. The paper describes an empirical study of the effects of the quantity of information available on practicing Quantity Surveyors' forecasting accuracy.\ud
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The methodology involved the surveyors repeatedly revising tender price forecasts on receipt of chunks of project information. Each of twelve surveyors undertook two projects and selected information chunks from a total of sixteen information types. The analysis indicated marked differences in accuracy between different project types and experts/non-experts. The expert surveyors' forecasts were not found to be significantly improved by information other than that of basic building type and size, even after eliminating project type effects. The expert surveyors' forecasts based on the knowledge of building type and size alone were, however, found to be of similar accuracy to that of average practitioners pricing full bills of quantities
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Virtual prototyping from need to pre-construction
No full textThe most important decisions about a building or structure are made during the early stages of design when the least amount of detailed information is available. Analysis tools that can help designers assess the implications of their decisions across a range of important parameters are needed. These should all be capable of operating from a single shared representation of the project. Once these initial decisions are made, designers need to be able to track the results as the building design becomes more comprehensive. This allows deviations to be identified, and then either corrected or the earlier decisions reconsidered. This process needs to continue until the building design is completed and then fed into the building usage and management phase of the facility's life.\ud
This chapter provides a vision of how such systems will operate in the future and examines the current state of integrated, whole-life cycle analysis systems. This allows areas where gaps exist to be identified
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