INTRODUCTION
BACKGROUND 
      Simulation  of technical systems was always in the heart of the design process. No idea is  implemented before it is verified by a simulation tool. It is done in  practically all aspects of research and engineering life the subject being a  single molecule or the universe as a whole. 
      Modern  electronic hardware, however, has given a boost to this discipline enabling  attacking problems that were beyond tractability in the near past. In that way  we are looking to results related to simulation of nano-biological structures,  complex micro-electro-mechanical structures, mixed electronic-electrical  digital and power systems, space - defining local and global climate etc. 
      What  are the existing methods applied in the field of simulation? 
      What  are the method and challenges in the future development of this area? 
      Can  we influence in any respect the stream that is driving the research boat? 
      What  does our experience suggest should be the future research topics? 
      These  and many other are the questions we will try to find the answer during SSSS’12. 
      This  symposium is supposed to inherit the results of previous meetings held at The  Faculty of Electronic Engineering in Niš and organized by the Yugoslav  Simulation Society such as
- The First Int. Neurocomputing Day (October, 1990)
 - The Small Systems Simulation Symposium (September 2000)
 - The Small Systems Simulation Symposium (September 2005)
 - The Small Systems Simulation Symposium (September 2010)
 
and
- The Int. Workshop on Implementation of Parallel Computers in Engineering Design (December, 2003).
 
Hopefully,  it will trace new ways and build new professional friendships that will put us  together again in the future. 
        CONCEPT 
      We  intend to put together experienced scientist having strong influence to the  subject and young researchers that are expected to bring us new strength both  by implementing modern computer programming methods and by introducing new  algorithms based on new computing philosophies. In that respect at SSSS’12 one  should see review of algorithms and experience of their implementation together  with overview of possible technical support to the implementation of these  ideas. 
      It  is not to forget that experiences from practical designs are the ones that  drive for new effort to verify the reality that we are simulating. This is why  new technologies that lead to challenging systems are welcomed to be presented. 
  SYMPOSIUM  TOPICS 
      Papers  related, but by no means limited, to the following topics are expected: 
- various aspects of simulation of mixed-signal integrated circuits,
 - micro-electromechanical systems,
 - bioelectronic systems,
 - micro-optoelectronic systems,
 - systems-on-a-chip,
 - smart materials,
 - control systems,
 - embeded systems,
 - smart grid ,
 - solar energy systems,
 - energy load prediction systems,
 - and other small integrated systems.
 
Topics include, but are not limited to, parallel algorithms, simulation of coupled systems, hardware description languages, fault simulation, hardware-software co-simulation, and modeling including model based design, tetsting and diagnosis..