1,721,125 research outputs found
Integrating Building Information Modelling (BIM) and System Dynamics approaches to decrease cost overrun in mass housing projects
Full text linkCost is one of the most important criteria for evaluating the success of a construction project. Estimating construction costs is an increasing necessity for accurate budgeting and effective allocation of funding since the lack of accuracy in cost estimation could increase the risk of cost overrun. One of the major difficulties in estimating the project cost accurately is the changes occurred in materials price during the project completion period. The aim of this study was to develop a systematic multi-objective knowledge-based approach for estimating the project cost with more accuracy and decrease the risk of cost overrun at the conceptual stage. System development methodology comprises a framework to deploy a system that automatically generates conceptual cost estimates by integrating System Dynamics (SD) with Building Information Modelling (BIM) through an external data interchange protocol in synchrony with interoperability standards. The SD module is used to predict the material price during the project completion period whilst using BIM helps enter detailed properties of the materials as well as the quantity take offs. Deployment of the proposed system will minimise the subjectivity whilst making investment decisions related to building projects and assisting designers and cost engineers to obtain results in an integrated quantitative, qualitative, and dynamic manner. The results show that the model can predict the price of the material with a reliable accuracy and they are anticipated to be of major significance to owners, designers, and construction managers. An application of an actual mass construction project is presented in order to illustrate the usefulness and capabilities of the developed approaches
Strategic Use Of ICT By Construction Organisations – Requirements And Implementation Issues
No full textConstruction industry operates at many levels with a wide range of sizes and types of organizations. It has project-based structure, where multiple organizations collaborate for individual projects and the collaboration is essentially measured by how effective the communication channels were managed at all the stages of the construction projects. Consequently logistics of inter-organisation commu nication offers strategic scope for\ud
construction industry. ICT is increasingly being used for communication in the onstruction industry, but for effective use of ICT, construction organizations have to strategically plan and implement its use at all the levels i.e at Application level, System level and Business level. Strategy has to be business driven and should consider\ud
the processes executed in the organization. Small and Medium Enterprises (SMEs) constitute the majority of the construction industry and it is at this level where the greatest strategic scope exists, by virtue of the number of organizations. Strategic management and process analysis are relevant to all construction enterprises, large or\ud
small. But, it should be approached in a systematic and structured manner. The paper discusses the concept and requirement of ‘Strategic use of ICT’ by the construction organisations and highlights the importance of considering needs of SMEs to be considered. It further discusses the important aspects of planning, design and\ud
implementation of such a strategy
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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Optimizing disassembly planning for aluminium-framed windows through automation and collision analysis
Full text linkDue to increasing economic competition and growing environmental concerns, the construction industry faces pressure to reduce its environmental footprint in material production and building processes. Disassembly planning has emerged as a key strategy to advance circular construction practices by facilitating material recovery at the end-of-life (EoL) stage. However, disassembly remains complex, requiring strategic planning to maximize material recovery, reduce waste, and minimize embodied energy consumption. The introduction of matrix-based representations offers a promising solution to this complexity. These representations enable efficient disassembly sequence generation, overcoming previously mentioned limitations and providing more efficient means for computers to generate disassembly sequences while reducing algorithmic complexity. This study represents collision test-based adjacency matrix constructions as tools for capturing geometric precedence relations of window parts. It also identifies key factors, dependencies, and challenges associated with disassembling matrix-based multi-layered and multi-material window systems
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