Collisions on construction sites are one of the major causes of fatal accidents. The complexity of equipment operations require detailed planning and better real-time control of the work. Research involving artificial intelligence in construction industry has been done to enhance communication between team workers and resolve distributed problems, for example, agent systems have been used for c...

Video recording of construction operations provides an understandable data that could be used to analyze and improve construction performance. Despite the benefits, manual stopwatch study of previously recorded videos can be laborintensive, may suffer from biases of the observers, and impractical after substantial period of observations. To address these limitations, this paper presents a new v...

Construction operations are subject to a wide variety of fluctuations and interruptions. Varying weather conditions, learning development on repetitive operations, equipment breakdowns, management interference, and other external factors may impact the production process in construction. As a result of such interferences, the behavior of construction processes becomes subject to random variatio...

Domain decomposition based on spatial locality is a classical dataparallel problem whose solution may improve by orders of magnitude when implemented on a GPU. Among the data structures involved in domain decomposition, uniform grids are widely used to speed up simulations in a number of fields, including computational physics and graphics. In this work, we present two commonly used approaches ...

A planner may use simulation for in the analysis and design of construction operation processes to optimize overall performance of a construction system. Normally, the basic elements used in construction operation process simulation system such as CYCLONE (CYCLic Operation NEtworks) are activities and queues. Activity is used to model the execution of the task work which consumes resources and ...

To support the utilization of discrete-event simulation in the analysis and planning of heavy construction operations, this research investigation has established a framework for a more simplified simulation environment. This framework is a resource operation cycle-based simulation modeling approach using an objectoriented information system to support project managers. This approach allows for...

Building Information Modeling is a powerful tool for the design and for a consistent set of data in a virtual storage. For the application in the phases of realization and on site it needs further development. The paper describes main challenges and main features, which will help the development of software to better service the needs of construction site managers © 2015 The Authors. Published ...

Paving is a method for constructing new operations from a given one. We will show that this method can be used to construct associative, commutative and monotone operations from particular given operations (from basic ‘paving stones’). We will discuss properties of the resulting operations by considering different cases of the ‘paving stones’ and the starting position of paving. Finally, we wil...

Starting from a certain monoid that describes the geometry of the left self-distributivity identity, we construct an explicit realization of the free left self-distributive system on any number of generators. This realization lives in the charged braid group, an extension of Artin’s braid group B∞ with a simple geometrical interpretation. AMS Classification: 20N02, 20F36, 08B20. Constructing ex...

The objective of this paper was to study and optimize the concrete paving operations taking place in the reconstruction project of Interstate 74 using simulation. To achieve this objective, field data were collected during construction, and were then used to determine adequate probabilistic density functions for the activities duration and to validate a developed simulation model. Upon validati...