نتایج جستجو برای: system dynamics sd
تعداد نتایج: 2641908 فیلتر نتایج به سال:
BACKGROUND Emerging technologies (ie, mobile phones, Internet) may be effective tools for promoting physical activity (PA). However, few interventions have provided effective means to enhance social support through these platforms. Face-to-face programs that use group dynamics-based principles of behavior change have been shown to be highly effective in enhancing social support through promotin...
Abstract: In order to evaluate the relationship between Organizational Strategies and Organizational results, a comprehensive model is required, which should be able to capture all aspects of business excellence. The EFQM model is suitable tool to observe these factors. The EFQM model consists of two main domains: Enablers and Results. The first domain which includes processes and systems in g...
in this paper, we investigate the chaotic behaviors of the fractional-order permanent magnet synchronous motor (pmsm) system. the necessary condition for the existence of chaos in the fractional-order pmsm system is deduced and an active controller is developed based on the stability theory for fractional systems. the presented control scheme is simple and flexible, and it is suitable both fo...
nowadays, electricity is one of the most significant infrastructures required for economic development of countries. hence, predicting electricity demand is very important especially in industry as a major electricity-consuming sector. the majority of studies under the subject of electricity demand have been performed by econometrics and it is not possible to investigate the effect of different...
In this paper, we report on the utility of merging Participatory Action Research (PAR) with System Dynamics (SD) as a locus for stimulating transformation in large-scale hospital academic setting. This is significant because it provides points cross fertilisation whereby two frameworks act synergistically each other to create high leverage interventions change, which may otherwise not have been...
in this study, stability control of a three-wheeled vehicle with two wheels on the front axle, a three-wheeled vehicle with two wheels on the rear axle, and a standard four-wheeled vehicle are compared. for vehicle dynamics control systems, the direct yaw moment control is considered as a suitable way of controlling the lateral motion of a vehicle during a severe driving maneuver. in accordance...
1 Cancer Epigenetics and Biology Program (PEBC), Catalan Institute of Oncology (ICO-IDIBELL), L’Hospitalet del Llobregat, Barcelona, Spain 2 Translational Research Laboratory, Catalan Institute of Oncology (ICOIDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain 3 Biomarkers and Susceptibility Unit, Catalan Institute of Oncology (ICOIDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain 4 CIBER...
In the Göttinger minipig, the reference values of 18 parameters in whole blood or plasma were determined. The results are expressed both as the mean value and +/- 2 SD presuming a symmetrical normal distribution and as the median value with the corresponding range. For most blood constituents, the results of the two modes of calculation were similar. Comparison of the values from young minipigs...
the complete 3d nonlinear dynamic problem of extensible, flexible risers conveying fluid is considered. for describing the dynamics of the system, the newtonian derivation procedure is followed. the velocity field inside the pipe formulated using hydrostatic and bernoulli equations. the hydrodynamic effects of external fluids are taken into consideration through the nonlinear drag forces in var...
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