نتایج جستجو برای: system dynamics sd

تعداد نتایج: 2641908  

2010
Lorenzo Cioni

The paper contains a critical description of the roles that System Dynamics (SD) can play for the definition of mediated solutions to complex environmental problems. SD can be either a valuable tool for the definition of shared and consensual solution or a burden and a hindrance. We present a critical review of some basic concepts of SD and discuss some key concepts and their roles in the searc...

In this paper, the dynamics of multicellular chopper are considered. The model is described by a continuous time three--dimensional autonomous system. Some basic dynamical properties such as Poincar'e mapping, power spectrum and chaotic behaviors are studied. Analysis results show that this system has complex dynamics with some interesting characteristics.

2011
Nicholas I. Cummings Nicholas Immanuel Cummings Luis Orozco

Title of dissertation: ENTANGLEMENT DYNAMICS IN ATOM-FIELD SYSTEMS Nicholas I. Cummings, Doctor of Philosophy, 2011 Dissertation directed by: Professor Bei-Lok Hu Department of Physics We consider the time evolution of quantum entanglement in the context of interactions between atoms and the electromagnetic field. We explore the influence of interatomic separation and the degree to which this c...

Journal: :The journal of physical chemistry. B 2006
Ross E Larsen Michael J Bedard-Hearn Benjamin J Schwartz

Mixed quantum/classical (MQC) molecular dynamics simulation has become the method of choice for simulating the dynamics of quantum mechanical objects that interact with condensed-phase systems. There are many MQC algorithms available, however, and in cases where nonadiabatic coupling is important, different algorithms may lead to different results. Thus, it has been difficult to reach definitiv...

Tahereh Aliheidary, Yahia zare mehrjerdi,

Job Satisfaction (JS) plays important role as a competitive advantage in organizations especially in helth industry. Recruitment and retention of human resources are persistent problems associated with this field. Most of the researchs have focused on the job satisfaction factors and few of researches have noticed about its effects on productivity. However, little researchs have focused on the ...

2006

1 Users and uses 2 The market 2 Problem addressed 2 State of art 3 DAAT solution 5 DAAT technology 6 DAAT SD-Sensor: current status 7 DAAT business development 8 Graphic overview 9 Summary. SD-Sensor, a performance measurement solution from DAAT Technologies' helps businesses better leverage BI data in quicker and more effective decision-making. By enabling early, automated detection of negativ...

M. Srinivasa Rao V. N. A. Naikan

Repairable standby system’s study and analysis is an important topic in reliability. Analytical techniques become very complicated and unrealistic especially for modern complex systems. There have been attempts in the literature to evolve more realistic techniques using simulation approach for reliability analysis of systems. This paper proposes a hybrid approach called as Markov system ...

2008
Lars Burmester Matthias Goeken

System Dynamics (SD) is an approach with a long tradition used for modelling and simulation of complex system. Early, a conceptual modelling language was applied to bridge the ‘linguistic gap’ between the natural language of the model users and the targeted simulation language. Despite the maturity of the modelling approach, up to today no linguistic metamodel exists for the used language, resu...

2009
Christian Suchan

System dynamics (SD) is a well-known methodology for analyzing the structure and the behavior of business systems and the environment. The utility of SD has been proven in numerous cases. However, decision makers have reservations using SD to support their decision processes. The reasons can be a) decision makers have problems to design a causal model under given time constraints (aspect of met...

2002

by Magne Myrtveit Normally, we try to aggregate discreteness in System Dynamics (SD) models by making continuous flows. This is a good modeling practice, but in some cases discreteness may have a significant influence on system behavior (see note). Consequently, we need to model such discreteness to explore its impact on behavior. The System Dynamics (SD) technology was originally designed with...

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