a numerical model for simulating residence time distribution (rtd) of turbulent flows in helical static mixers is proposed and developed to improve the understanding of static mixers. the results of this model is presented in terms of different volumetric flow rate to illustrate the complicated flow patterns that drive the mixing process in helical static mixers. the computed results are also u...

a novel mathematical model has been developed to aid the formulation of emulsion explosives. this mathematical model calculated heat of explosion, oxygen balance and raw material cost as a function of explosive ingredients, and the solution of the mathematical model was obtained by a ms excel program. the effects of the different content of nh4no3, nano3, h2o, and span-80 and composite fuel oil...

the exploitation of the academic sector research findings, and commercializing them is an important priority. the purpose of this research was to design a model for the commercialization of research findings of the department of electrical engineering of razi university of kermanshah. the study was a fundamental research which was conducted by the use of a grounded theory approach.research fiel...

customer satisfaction is the major concern to many leading companies throughout the world.customer satisfaction is the major concern to many leading companies throughout the world. more firms use satisfaction ratings as an indicator of the performance of products and services and as an indicator of the company’s future. as lately shown companies that are able to identify customer needs and alig...

robust control design of vehicles addresses the effect of uncertainties on the vehicle’s performance. in present study, the robust optimal multi-objective controller design on a non-linear full vehicle dynamic model with 8-degrees of freedom having parameter with probabilistic uncertainty considering two simultaneous conflicting objective functions has been made to prevent the rollover. the obj...

Design and Validation of an Instructional Design Model for Reflection-Based Learning Environments   E. Azimi, Ph.D.* J. Haatami, Ph.D.** H. FarDaanesh, Ph.D.*** O. Noroozi, Ph.D.****   Reflection on teaching is a known method of learning to teach. Reflection is a form of thinking wherein improvement is sought through self-observation. Recent approaches to teaching practicums have gravi...

Second, it represents the fundamental architecture of an enterprise’s data, and as such is an ideal starting place for database design. To be sure, the final structure of a database may differ from the data model for good and valid reasons, but the closer it remains to the original structure, the more likely it is to be able to resist requirements for future changes. To the system designer and ...

This paper discusses the integration of model-checking inside a design flow for Quasi-Delay Insensitive circuits. Both the formal validation of an asynchronous behavioral specification and the formal verification of the asynchronous synthesis result are considered. The method follows several steps: formal model extraction, model simplification, environment modeling, writing temporal properties ...

SUMMARY New rank-based methods for analyzing data from multisite clinical trials are presented ·in the context of "mixed" linear models. In contrast to current rank methods, the new procedures test for a drug main effect in the presence of a random drug by site interaction (or drug by investigator interaction when there is only one investigator per site). Analogous procedures are also provided ...

design precedents are available instances of architectural projects by high profile architects and designers, which can be studied and analyzed as knowledge resources for a given project. developing a design knowledge based on a critical study of precedents will be referred to in this paper as precedent-based knowledge. in all stages of designing, design reasoning based on precedents can save d...