Merging the State-Space Representation and the Mean-Variance Characterization of the Efficient Frontier

2005 ◽  
Author(s):  
Karl Ludwig Keiber
Keyword(s):  
State Space ◽  
Efficient Frontier ◽  
The State ◽  
Space Representation ◽  
State Space Representation ◽  
The Mean ◽  
Mean Variance

scholarly journals Shannon Entropy Analysis of the Genome Code

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
J. A. Tenreiro Machado
Keyword(s):  
Dynamical Systems ◽  
State Space ◽  
Shannon Entropy ◽  
Large Volume ◽  
The State ◽  
Space Representation ◽  
Entropy Analysis ◽  
Genomic Information ◽  
State Space Representation

This paper studies the chromosome information of twenty five species, namely, mammals, fishes, birds, insects, nematodes, fungus, and one plant. A quantifying scheme inspired in the state space representation of dynamical systems is formulated. Based on this algorithm, the information of each chromosome is converted into a bidimensional distribution. The plots are then analyzed and characterized by means of Shannon entropy. The large volume of information is integrated by averaging the lengths and entropy quantities of each species. The results can be easily visualized revealing quantitative global genomic information.

Furnace Modelling Using State Space Representation

2006 ◽  
Vol 3 (1) ◽  
pp. 37
Author(s):  
Razidah Ismail
Keyword(s):  
State Space ◽  
Power Plants ◽  
Controller Design ◽  
Cost Savings ◽  
Combined Cycle ◽  
The State ◽  
Space Representation ◽  
State Variables ◽  
State Space Representation ◽  
Space Modeling

The state space modeling approach was developed to cope with the demand and performance due to the increase in system complexity, which may have multiple inputs and multiple outputs (MIMO). This approach is based on time-domain analysis and synthesis using state variables. This paper describes the development of a state space representation of a furnace system of a combined cycle power plant. Power plants will need to operate optimally so as to stay competitive, as even a small improvement in energy efficiency would involve substantial cost savings. Both the quantitative and qualitative analyses of the state space representation of the furnace system are discussed. These include the responses of systems excited by certain inputs and the structural properties of the system. The analysis on the furnace system showed that the system is bounded input and bounded output stable, controllable and observable. In practice, the state space formulation is very important for numerical computation and controller design, and can be extended for time-varying systems.

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