Proceedings of the Joint INDS'11 & ISTET'11最新文献

{"title":"Synchronization of flashing electronic oscillators","authors":"E. Káptalan, Zsuzsa Sarkozi, A. Tunyagi, Sz. Boda, Z. Néda","doi":"10.1109/INDS.2011.6024789","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024789","url":null,"abstract":"A system of flashing electronic oscillators exhibiting highly nontrivial synchronization is built and studied. The electronic oscillators are capable of detecting the ambient light intensity and for emitting light pulses in various modes. A simple optimization rule drives the system. Whenever the light intensity detected by an oscillator is lower than a critical f∗ value, the oscillator chooses an operation mode that increases the ambient light intensity. In contrary, when the light intensity detected by the oscillator is smaller than f∗ the oscillators operate in a mode that decreases the ambient light intensity. As a result of this simple optimization rule an unexpected synchronization of the emitted pulses appears for a given f∗ interval. Our experimental results confirm the earlier computer simulation predictions.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122735017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Applications of system dynamics for communities detection in complex networks","authors":"N. Nefedov","doi":"10.1109/INDS.2011.6024827","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024827","url":null,"abstract":"It is well-known that a network topology affects a system dynamics, it allows to use the system dynamics to identify topology. In this paper we consider two methods of system dynamics: network communities detection based on random walk and phase clustering behaviors of phase-coupled oscillators in complex networks. These methods may be used to evaluate robustness of communities detection and to make missing links predictions in complex networks.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125657576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Equations of electrodynamics: Final essence of EM phenomena","authors":"B. Miskovic","doi":"10.1109/INDS.2011.6024813","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024813","url":null,"abstract":"The sets of all the basic equations, relating in the two directions the three pairs of EM quantities, are considered and compared. The tensor equations point to 4D space, as the ambient of EM phenomena. The remaining equations enable the tensor interpretation of all the quantities. The quantities of the same ranks are related algebraically, and the orders of the differential equations accord to the differences of the related ranks. The equations are interpreted in the terms of mechanics of some super-fine quantum fluid, in 4D space.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"278 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134274826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Image edge detection with discretely spaced FitzHugh-Nagumo type excitable elements","authors":"A. Nomura, M. Ichikawa, K. Okada, H. Miike, T. Sakurai, Y. Mizukami","doi":"10.1109/INDS.2011.6024787","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024787","url":null,"abstract":"This paper presents a computer algorithm of detecting edges from a grey scale image with FitzHugh-Nagumo type excitable elements discretely spaced at image grid points. A previous edge detection algorithm utilising the elements is not applicable to darker intensity areas surrounded by brighter ones; the algorithm fails in detecting edges in the areas. In order to solve the problem in detecting edges in relatively dark areas, we proposed to utilise an intensity inverted image as well as its original one. The proposed algorithm firstly provides a tentative edge map from the original image, and simultaneously provides an additional tentative edge map from the inverted image. Then, the algorithm provides a final edge map by merging the two edge maps. We quantitatively confirm performance of the proposed algorithm, in comparison with that of the previous one and that of the Canny algorithm for an artificial grey scale image not having noise. We furthermore confirm robustness and convergence of the proposed algorithm for a noisy image and real ones. These results shows that the performance of the proposed algorithm is much higher than the previous one and is comparable with the Canny algorithm for a noise-less image, and the proposed algorithm converges for all of the images. However, the proposed algorithm is vulnerable for additive noise, in comparison with the Canny algorithm and the anisotropic diffusion algorithm.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129077359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantitative comparisons of digital chaotic circuits for use in communications","authors":"Alan J. Michaels","doi":"10.1109/INDS.2011.6024835","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024835","url":null,"abstract":"Chaotic spread spectrum communication systems are sought after for their high levels of security, derived from the apparent randomness of the underlying chaotic spreading signal. Traditionally this “randomness” is quantified by the use of Lyupanov exponent(s) that give rates of chaotic state divergence, for continuous-time chaotic circuits. The downside of such continuous-time analog chaotic systems is that they are difficult to synchronize, leading to reduced channel capacity via re-synchronization overhead or compromises in security. These chaotic signals also possess colored spectra, leading to detection and channel utilization disadvantages. Discrete-time and — amplitude systems are simpler to implement, yet more difficult to quantify their “chaotic-ness;” the rate of state divergence is dependent on both computational precision and sampling intervals in sequence generation. Moreover, the existence of a well-defined chaotic attractor is evidence of a failure to meet the desired maximal entropy signal characteristic required for maximum channel capacity throughput. This paper presents comparative simulation measures quantifying the underlying randomness and computational sensitivities for a collection of digital chaotic mappings, qualifying their suitability for use in secure communication systems. Under most measures, the tent map and the logistic map fail to meet the needed performance. The skew tent mapping is found to be better, yet techniques for closed field calculations are found to be superior, without a significant increase in computational resources.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114159556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Power quality improvement for grid connected wind energy system using FACTS device","authors":"V. Yuvaraj, E. Raj, A. Mowlidharan, L. Thirugnanamoorthy","doi":"10.1109/INDS.2011.6024828","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024828","url":null,"abstract":"The Renewable energy sources, which have been expected to be a promising alternative energy source, can bring new challenges when it is connected to the power grid. However, the generated power from renewable energy source is always fluctuating due to environmental condition. In the same way Wind power injection into an electric grid affects the power quality due to the fluctuation nature of the wind and the comparatively new types of its generators. On the basis of measurements and norms followed according to the guidelines specified in IEC-61400 (International Electro-technical Commission) standard, the performance of the wind turbine and thereby power quality are determined. The power arising out of the wind turbine when it connected to grid system concerning the power quality measurements are-the active power, reactive power, voltage sag, voltage swell, flicker, harmonics, and electrical behaviour of switching operation and these are measured according to national/international guidelines. The paper clearly shows the existence of power quality problem due to installation of wind turbine with the grid. In this proposed scheme a FACTS device {STATIC COMPENSATOR (STATCOM)} is connected at a point of common coupling with a battery energy storage system (BESS) to reduce the power quality problems. The battery energy storage system is integrated to support the real power source under fluctuating wind power. The FACTS Device (STATCOM) control scheme for the grid connected wind energy generation system to improve the power quality is simulated using MATLAB/SIMULINK in power system block set. The intended result of the proposed scheme relives the main supply source from the reactive power demand of the load and the induction generator. From the obtained results, we have consolidated the feasibility and practicability of the approach for the applications considered.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121197696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synchronization of multi-directional multi-scroll chaos generators: A Hamiltonian approach","authors":"E. Zambrano-Serrano, J. Muñoz-Pacheco, O. Félix-Beltrán, R. Trejo-Guerra, L. C. Gómez-Pavón, E. Tlelo-Cuautle, C. Sánchez-López, A. Luis-Ramos","doi":"10.1109/INDS.2011.6024790","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024790","url":null,"abstract":"In this paper, a chaotic synchronization scheme for multi-directional multi-scroll chaos generators is presented. We use Generalized Hamiltonian forms approach to determine the synchronization conditions for two unidirectionally coupled multi-directional multi-scroll chaotic attractors. First, two state-variables of the master system are used to control the two nonlinear functions in the slave system and consequently, reach the synchronization of two 2D-4-scroll chaotic systems. Similarly, the synchronization of two 3D-4-scroll chaotic systems is achieved by using all three state-variables in order to control the three nonlinear functions for the slave system. Finally, theoretical calculations are in good agreement with numerical simulations and a prediction on the values for observer gain is also given.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122909519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics study of an electronic systems design strategy that includes the traditional strategy and the modified traditional strategy","authors":"M. A. S. P. Juárez, A. Zemliak, E. R. Silva","doi":"10.1109/INDS.2011.6024836","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024836","url":null,"abstract":"This work presents the theoretical study considerations and the characteristics of a general design methodology in optimal time for electronic systems using numerical methods and optimal control theory. Through this theory the design problem of a system is formulated in terms of optimal control in minimal time. This general design methodology includes the traditional design strategy (TDS), where is possible to use different kind of optimization procedures and different models, but in each step solution is not possible to change these; the modified traditional design strategy (MTDS) is also included, where the model of the system is part of optimization procedure but an objective function of optimization process is constructed such includes the traditional objective function and some penalty functions that feign the model of the system. A whole of special control functions are introduced artificially to generalize the methodology and producing several design trajectories for the same optimization process, where the first and final trajectories correspond to TDS and MTDS respective. The combination of a whole these trajectories produce an infinite number of design strategies, some of these are quasi-optimal in time and only one is optimal in time. The determinations of switching points for the optimal construction algorithm are found using optimal control theory, whit approximation methods and through the special Lyapunov function. These ideas are proposed using the method of gradient optimization and acceleration effect. The analysis of some non linear electronic circuits models shows that this strategy can reduce the total number of operations many times and accelerate the design process. Qualitative and numeric results of this iterative process are generated in a personal computer in a C++ language elaborated program whit a visual C++ graphic user interface. The examples presented show that the traditional design methodology is not time optimal, and the potential gain in compute time of the optimal design strategy whit respect to traditional design strategy increases in accordance with the size and complexity.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123504984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adaptive contrast enhancement involving CNN-based processing for foggy weather conditions & non-uniform lighting conditions","authors":"Christopher Schwarzlmuller, Fadi Al Machot, A. Fasih, K. Kyamakya","doi":"10.1109/INDS.2011.6024782","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024782","url":null,"abstract":"Adaptive image processing in the context of Advanced Driver Assistance Systems (ADAS) is a crucial issue because bad weather conditions lead to poor vision. In a foggy weather, image contrast and visibility are low due to the presence of airlight that is generated by scattering light, which in turn is caused by fog particles. Since vision based ADAS are affected by inadequate contrast, a real-time capable solution is required. To improve such degraded images, a method is required which processes each image region separately. Hence, real-time processing is required, the method is realized with the CNN paradigm which claims the characteristic of real-time image processing. To compare the proposed method with existing state-of-the-art methods the Tenengrad measure is applied.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"15 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131935528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}