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Volume 19, Number 4, 2016
Octavian IONESCU, Octavian BUIU, Bogdan SERBAN, Gabriela IONESCU Abstract. The latest developments in electric car industry are strongly correlated with technological advance achieved in the production of reliable energy storage devices. Currently, the Lithium Ion batteries cells are the most promising source of energy; however, the production of reliable packs of batteries is still a big challenge due to high number of cells used in a battery pack and the unpredictable aging behavior of these cells. Although there are direct methods of measuring state of health of battery cells, these methods cannot be practically applied to the battery packs due to their complexity thus the only possibility is to develop a much simple, inferential method. This paper is presenting the results of experimental research and studies conducted for establishing an inferential method for battery cell state of heath assessment by monitoring the difference of temperatures measured outside- inside battery. The proposed method is to measure and calculate the difference of the two temperatures and to correlate this result with the current delivered and thus deducing the state of health of battery. Read the pdf
P.L. MILEA, M. DASCĂLU, C.O. OPRIȘ, E. FRANȚI, M. DUMITRACHE, C.I. STOICA Abstract. Remote manipulation devices are used to extend the possibilities of human action over long distances or in environments inaccessible to man. In this paper we present an application to control a robotic arm with anthropomorphic effector, including a haptic feedback system, that provides the operator direct information on the interactions between effector and items handled by robotic arm. The system uses pressure sensors placed on the robotic hand palm and fingers connected and correlated with haptic actuators placed on the operator’s control glove. Pressure information from the robotic hand is processed using a microcontroller development system, and then is transmitted to the operator’s interface, where the specific vibration is generated using the haptic actuators. Experiments have shown that vibrations applied at different points of the palm and fingers of the operator were identified correctly most of the time, as sensations of pressure. Read the pdf
Arzuman G. GASANOV, Faig G. PASHAEV Abstract. In this work we describe the possibility of using of the simple computer program developed in Delphi Studio working undo MS Windows OS for carrying out the quantum mechanical calculation of electronic structure of nanoparticles. Theoretical methodology is described for realization of this simple computer. The numerous quantum mechanical calculations show that this computer program works correctly and it is useful for use in basis of Slater Atomic Orbitals (SAOs). Read the pdf
Anand Prakash SHUKLA Abstract. Cellular automata can be significantly applied in image processing tasks. In this paper, a novel method to train two dimensional cellular automata for detection of edges in digital images has been proposed and experiments have been carried out for the same. Training of two dimensional cellular automata means selecting the optimum rule set from the given set of rules to perform a particular task. In order to train the cellular automata first, the size of rule set is reduced on the basis of symmetry. Then the sequential floating forward search method for rule selection is used to select the best rule set for edge detection. The misclassification error has been used as an objective function to train the cellular automata for edge detection. The whole experiment has been divided in two parts. First the training was performed for binary images then it is performed for gray scale images. A novel method of thresholding the image by Otsu's algorithm and then applying the cellular automata rules for the training purpose has been proposed. It has been observed that the proposed method significantly decreases the training time without affecting the results. Results are validated and compared with some standard edge detection methods both qualitatively and quantitatively and it is found better in terms of detecting the edges in digital images. Also the proposed method performs much better in corner detection as compared to the standard edge detection methods. Read the pdf.
Monica DASCĂLU Abstract. Cellular automata model grew very popular decades ago with software applications like the Game of Life. From the computing theory’s perspective, it is a fundamental model of massive parallelism and was believed to offer extremely efficient solutions for hardware implementations. This paper overviews scientific literature and presents existing implementations of cellular automata, either in general form or dedicated for specific applications. The model is still considered to be very interesting and was proved to be efficient for applications like modeling of complex phenomena and implementation of encryption systems and randomizers. However, the hardware versions of cellular automata are still belonging to the academic realm, as they did not reach the industry and are not available as commercial products. Read the pdf
Mahalingam KALPANA, Paul PRITHWINEEL Abstract. An extended H system with locally evolving rules is a model of splicing computation with a special feature that the splicing rules evolve at each step. It was originally proved by Paun et al. that all RE languages can be generated by such systems with a finite set of rules of radius at most 4 and with contexts of length at most 7 for the insertion-deletion rules by which the splicing rules evolve. We improve this result by reducing the length of the contexts to at most 2 and we also show that such systems with radius at most 2 and contexts of length at most 3 can generate all RE languages. In both cases, the insertion-deletion rules will insert or delete only one symbol. We also show that if the inserted strings are of length at most 2 and the deleted strings are of length 1, then the system can generate all RE languages with splicing rules of radius 3 and insertion-deletion rules with contexts of length at most 2. Finally, we show that the length of contexts and of the strings inserted/deleted can be reduced to 1 if the rules are applied in a matrix controlled manner. Read the pdf |