this article proposes composition of fuzzy sets theory with discrete-event simulation and puts it into application in order to model uncertain activity duration in simulating a real-world system. the purpose of this paper is to assess the usefulness of fuzzy simulation for modeling uncertain activity duration, especially when insufficient or no sample data is available. in this research, fuzzy ...

This paper will describe the multi-board concept, which is a working approach for supporting life cycle oriented design and product quality. Aspects of this concept include construction of a common working environment where multiple display boards depict scenarios of the product life cycle, creating a shared quality mindset amongst designers, and developing creativity and synthesis in product d...

A common problem in production environments is the need to estimate the remaining time in system for work-inprogress jobs. Simulation can be used to obtain the estimates. However, when the future path of a job is uncertain (due to stochastic events such as rework), using simulation to estimate the remaining cycle time of a job at step k can be imprecise; traditional confidence intervals on the ...

An analytical approach to the theory of diffraction transformation of pulses with superbroad spectra and arbitrary time dependence, in particular half-cycle (unipolar), single-cycle, and multicycle pulses, was developed. Closed-form solutions were found for on-axis propagation of half-cycle pulses with initially Gaussian spatial profiles that have either cosh21-like or Gaussian time dependence,...

Cloud computing has the promise of significant benefits that include reduced costs, improved service provisioning, and a move to a pay-per-use model. However, there also are many challenges to successfully delivering cloud-based services; including security, data ownership, interoperability, service maturity and return on investment. These challenges need to be understood and managed before att...

Bioretention or rain garden is a preferable low impact development (LID) approach due to its characteristics which reflect natural water cycle processes. However, this system is still little understood and quite complicated in terms of design and implementation due to many technical considerations. Hence, this paper gives a review of the challenges and developments for the use of bioretention f...

Despite the power of bacterial genetics, the prokaryotic cell cycle has remained poorly understood. But recent work with three different bacterial species has shed light on how chromosomes and plasmids are oriented and partitioned during the cell cycle, and on mechanisms regulating the initiation of DNA replication.