Search results for " Modeling"
showing 10 items of 2411 documents
Effective digital collaboration in the construction industry – A case study of BIM deployment in a hospital construction project
2015
We examine a case of successful integrated BIM-based design in a construction project.We present a set of key factors influential to enable digital collaboration in this project.Key factors identified include: change agents, new roles, cloud computing, contracts, etc.We found integrated design to depend upon changing traditional work practices.The case is an example of BIM implementation and collaborative work in the AEC industry. Building information modeling (BIM) and related digital innovations can serve as a catalyst for more transparency, tighter integration, and increased productivity in the architecture, engineering, and construction industry. Yet, many project teams struggle with ho…
How is Building Information Modeling Influenced by Project Complexity?
2014
Virtual design and construction of buildings and architectural spaces require extensive collaboration among a diverse set of design professionals. The authors analyze e-collaboration performance in two construction projects of differing complexity, to gain an understanding of how collaborative design based on building information modeling (BIM) is influenced by the complexity of the building project. The findings suggest that the perceived business value of BIM depends on project complexity and that BIM-based collaboration does not yield unconditional positive implications for all types of construction projects. The authors argue that current practice would benefit from a more structured ap…
SIGA3D: Semantic Combination of IFC and GIS to support Urban Facilities Management
2011
The interoperability of Information Systems has been a research topic for over thirty years. While some forms of heterogeneity have been settled by the adoption of standards, some domains, such as the Urban Information Modeling (UIM), require specific research. The UIM combines information from the domain of Building Information Modeling (BIM) with Geographic Information System (GIS) within a collaborative platform. Using this platform, a set of heterogeneous actors takes part in the lifecycle of the urban environment through a 3D digital model. This ambition is faced with several gaps such as resolution of semantic heterogeneity in the lifecycle management system, the resolution of structu…
A Review of Building Information Modelling for Construction in Developing Countries
2016
Building Information Modelling (BIM) is wide ly seen as a catalyst for innovation and productivity in the construction industry. BIM can assist a more sustainable construction process that in turn may contribute to eradicating poverty in developing c ountries (Un ited Nation Millennium Goals). While BIM is increasingly be ing adopted in developed coun tries, implementations in the developing country context are rare. Research has establishe d how construction firms struggle from several limitations having to do with the socio - economic and technological environment found in developing countries. Examples of issues preventing BIM adoption include a shortage of IT - literate personnel as wel…
How to unleash the innovative work behavior of project staff? The role of affective and performance-based factors
2017
Abstract Although the literature generally presumes that temporary forms of organizing such as projects are especially suitable for generating innovation, empirical support for this assumption that goes beyond case-based evidence is still scarce. The study at hand aims to close this gap in research by investigating how the characteristics of temporary organizations (TOs) affect an individual's innovative work behavior (IWB). By applying a structural equation modeling approach on an Austrian-German sample of 583 TO professionals, it can be shown that both, performance-based factors and affective factors are having a significant impact on the emergence of IWB. However, the hypothesized modera…
Including the environmental criteria when selecting a wastewater treatment plant
2014
Abstract Life Cycle Assessment (LCA) is a methodology to generate environmental impact estimates associated with the life cycle stages of a product or process. The approach facilitates a more comprehensive outlook of the end-of-pipe process impacts, in which wastewater treatment plants (WWTPs) are included. Here we describe the implementation of the LCA methodology within a knowledge-based Decision support system (DSS) in order to include the environmental criteria to the decision making process when selecting the most appropriate process flow diagrams for specific scenarios. A sample group of 22 actual operating facilities in Spain, corresponding to five different typologies were assessed …
Wastewater treatment plant design and operation under multiple conflicting objective functions
2013
Wastewater treatment plant design and operation involve multiple objective functions, which are often in conflict with each other. Traditional optimization tools convert all objective functions to a single objective optimization problem (usually minimization of a total cost function by using weights for the objective functions), hiding the interdependencies between different objective functions. We present an interactive approach that is able to handle multiple objective functions simultaneously. As an illustration of our approach, we consider a case study of plant-wide operational optimization where we apply an interactive optimization tool. In this tool, a commercial wastewater treatment …
Electric conduction in solids: a pedagogical approach supported by laboratory measurements and computer modelling environments
2008
In this paper we present a pedagogic approach aimed at modeling electric conduction in semiconductors, built by using NetLogo, a programmable modeling environment for building and exploring multi‐agent systems. ‘Virtual experiments’ are implemented to confront predictions of different microscopic models with real measurements of electric properties of matter, such as resistivity. The relations between these electric properties and other physical variables, like temperature, are, then, analyzed.
Linear parameter‐varying modelling and control of an offshore wind turbine with constrained information
2014
This study deals with linear parameter-varying modelling and output-feedback H ∞ control design for an offshore wind turbine. The controller is designed with consideration that not all the information in the feedback loop will be used. This constraint is incorporated into the design procedure. Constrained information means that a special zero-non-zero pattern is forced upon the gain matrix. The constrained controller is obtained based on parameter-dependent Lyapunov functions and formulated in terms of linear-matrix inequalities. Since the functions are dependent on the wind speed and accurate wind speed measurements are rarely available in practice, an extended Kalman filter is used to est…
Leadership and employees’ perceived safety behaviours in a nuclear power plant: A structural equation model
2011
Leadership is considered an essential element in guaranteeing the safe running of organizations. The purpose of the present study is to find out how leader behaviours influence employees' safety behaviours (perceived safety behaviours) in the nuclear field. In an attempt to answer this question, the authors of this research have considered the way this influence is exercised, taking into consideration some important factors like safety culture and safety climate. To achieve this, the empowerment leadership model, based on a behavioural approach to leadership, was used. The sample was made up of 566 employees from a Spanish nuclear power plant. The results indicated that when safety culture …