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The theoretic ground of a locally topological method for defining a minimal attractor embedding dimension on the basis of linear and nonlinear decompositions in state-space of a dynamic system is proposed. The computer confirmation of the theoretical results is presented.
This paper presents the theoretical and experimental development of an autopilot for the Royal Thai Air Force (RTAF) aerial target. Since there was no prior information about the aerodynamic coefficients and propulsion model, an equation-error method was used to estimate aerodynamic and propulsion coefficients from flight data in order to develop a six-degree-of-freedom (6-DOF) nonlinear mathematical...
Plagiarism is known as illegal use of others' part of work or whole work as one's own in any field such as art, poetry, literature, cinema, research and other creative forms of study. Plagiarism is one of the important issues in academic and research fields and giving more concern in academic systems. The situation is even worse with the availability of ample resources on the web. This paper focuses...
In this paper an image processing algorithm for automatic evaluation of scanned examination sheets is described. The discussed image contains selected function graphs sketched on a prepared sheets. This type of task is characteristic of final high school exams of natural sciences. Our challenge was to develop an evaluation algorithm, which works with a precision comparable to the teacher. If the image...
The methodology for the electronic networks optimization was elaborated by means of the optimal control theory approach. In this case the problem of the electronic system design is formulated as a classical problem of functional minimization of the optimal control theory. The minimal time system design algorithm was defined as a controllable dynamic process with an optimal control vector. By this...
Given an incompletely specified index generation function, the number of variables to represent the function can often be reduced by properly assigning don't care values. In this paper, we derive a lower bound on the number of variables necessary to represent a given incompletely specified index generation function. We also derive three properties of incompletely specified index generation functions...
This paper provides interesting findings for modeling of a challenging and critical pedagogical issue namely online learning assessment of Multiple Choice Questions (MCQs) analysis and evaluation. More precisely, in fulfillment of that issue's objective, this work suggests using a realistic Artificial Neural Network (ANN) model. That, explicitly, characterized by two learning paradigms: supervised...
In this paper ART2 classifier is used to extract clusters of databases taken from complex processes with different behaviors. The used classifier is an unsupervised one and the obtained clusters characterize local models of a considered system. These local models represent linear behaviors of the process. This result is the consequence of the characteristic of the F1 layer of the ART2 neural network...
In order to solve the parallel algorithm for Petri nets system with concurrent function, to realize the parallel control and execution of the Petri nets, the Petri nets parallel subnets conditions were proposed, that provides the theory basis for judging P- invariant whether was the parallel subnet. Firstly, we according to the concurrent character of Petri net model, to analyze the parallelism of...
In this paper the method of identification of underwater vehicle (UV) mathematical model parameters is offered. This method allows providing the limited set of UV onboard sensors and has acceptable complexity for using on UV onboard computer.
Caches are widely used in computers. This paper proposes an algorithm to increase the number of cache ways in w-way set associative cache to maximum of 2w ways. The addresses resulting in conflict miss to a set are placed in other_set. The other set is chosen as the set with maximum vacant cache ways. The least recently used cache way is replaced in case of no vacant cache ways in the other_set. An...
Tonal music has had a rich history in Video Games and movies, and in fact, music generation has played a minor role in the history of game music as well. Recent developments in Music Theory has derived representions of chord progressions using geometric topologies. Unlike prior generative music, the framework proposed in this paper attempts to approach tonal music generation by building networks of...
In the paper the new formulation of the Broyden restricted convex class of updates involving oblique projections is introduced. It is a sum of two terms: the first one containing special oblique projection and the second standard term ensuring verification of the quasi-Newton condition (it is also an oblique projection multiplied by appropriate scalar). The applied oblique projection involves vector...
Groundwater flow simulation has become one of the top international issues in new generation of environmental applications. When managing large-scale groundwater flow problems, the intensive computational ability and large amounts of memory space required for modeling are the main bottlenecks for researchers. In order to solve three-dimensional large-scale groundwater flow problems more rapidly, the...
The problem of optimization of analog circuit for a minimal computer time has been formulated as the functional minimization problem of the control theory. The process of circuit optimization is formulated as the controllable dynamic system. The conception of the Lyapunov function was proposed to analyze the behavior of the process of circuit optimization. The special function that is a combination...
We present in this paper a floating-point adaptive CORDIC algorithm that removes the main limitations of the standard algorithm: (a) Requires lesser number of iterations, (b) Has higher range (c) Applicable for fixed- or floating-point data. (d) Lower arithmetic noise. (e) Eliminates overhead of scaling operation The proposed algorithm
The criteria of finding the optimal structure of the model as interval difference operator is carried out. It is shown that the formulated task of structure identification is a multicriteria optimization task with the discrete target functions and nonlinear constraints specified by interval system of nonlinear algebraic equations (ISNAE).
Model validation and analysis of the development of workflow system is a relatively weak link. At present, there is a lack of an effective tool or a method to validate the correctness and the effectiveness of the new model. Errors of the workflow model destroy the workflow system seriously. It is likely to lead to the failure of the entire workflow system. In order to improve that model is correct...
In this paper, equivalent tilt error models are derived which are applicable to the alignment of the small AUV attitude and heading reference system (AHRS), using quaternions in the body frame approach. And they are compared with the error models which use quaternions directly from the view of computational burdens. Based on the equivalent tilt error models, an alignment algorithm is developed for...
Tongue diagnosis is one of the most valuable and widely used diagnostic methods in traditional Chinese medicine (TCM). A tooth-marked tongue is an important objective index of the diagnosis of qi (yang) deficiency syndrome during the diagnosis of the TCM. In order to accurately analyze it, an effective method to confirm the amount of tooth-marked and to attain the degree of tooth-marked is brought...
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