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Wiertnictwo, Nafta, Gaz
2006 R. 23/1 501-515
PL W artykule przedstawiono mową metodę (model) przewidywania najbardziej skutecznych sposobów tworzenia mostków utworzonych z cząstek na czole formacji o szerokim rozkładzie kanalików w przestrzeni porowej. Badania laboratoryjne nad tym modelem wykazały, że ma on istotną przewagę nad dwom dotychczas s[...]
EN This paper presents a new method (model) for predicting the most efficient way to create a particle bridge on a formation face having a wide spread of pore throat sizes. Laboratory data, based on particle bridging distributions using this new model, are shown to be an improvement over two current in[...]
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Artificial Satellites : Journal of Planetary Geodesy
2011 Vol. 46, No. 4 139--150
EN In October 2010 the US Naval Observatory together with the Space Research Centre in Warsaw initiated the Earth Orientation Parameters Combination of Prediction Pilot Project, which was accepted by the IERS Directing Board. The goal of this project is to determine the feasibility of combining Earth O[...]
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Artificial Satellites : Journal of Planetary Geodesy
EN A well known problem with Earth Orientation Parameters (EOP) prediction is that a prediction strategy proved to be the best for some testing time span and prediction length may not remain the same for other time intervals. In this paper, we consider possible strategies to combine EOP predictions com[...]
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Journal of Telecommunications and Information Technology
2013 nr 4 32--40
EN An important problem one needs to deal with in a Voice over IP system is server overload. One way for preventing such problems is to rely on prediction techniques for the incoming traffic, namely as to proactively scale the available resources. Anticipating the computational load induced on processo[...]
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Acta Geophysica
EN Based on the moment magnitude scale, a probabilistic model was developed to predict the occurrences of strong earthquakes in the seis- moactive area of Zemmouri, Algeria. Firstly, the distributions of earthquake magnitudes Mi were described using the distribution function F0(m), which adjusts the ma[...]
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Journal of Theoretical and Applied Computer Science
EN This paper describes an application of data mining, namely classification, with respect to 3-D surface analysis. More specifically in the context of sheet metal forming, especially Asymmetric Incremental Sheet Forming (AISF). The issue with sheet metal forming processes is that their application res[...]
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Systems Science
EN This paper is devoted to the performance analysis of the multiprocessor teletraffic processing environment under control of different resource allocation algorithms. It is assumed that the quality of service of incoming traffic is measured as the average delay of connections imposed by processing. I[...]
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Systems Science
EN The paper concerns time series modelling and prediction. Time series dynamics is described with the use of a hybrid linear-bilinear model. Then, a prediction algorithm that minimizes a variance of a prediction error is derived based on the hybrid linear-bilinear model, and the method of prediction s[...]
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Fundamenta Informaticae
EN Reversible steganography allows an original image that has gone through the embedding process to be completely restored after the extraction of the embedded data. In this paper, we propose a reversible scheme with a high embedding capacity for VQ compressed images. Our reversible method is based on [...]
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Polish Journal of Chemistry
EN We present new experimental data of density, refractive index, speed of sound and viscosity for the binaries of corn oil + (n-hexane,n-heptane, n-octane, 2-butanone, 3-pentanone and 4-methyl-2-pentanone) at T = 298.15 K and standard conditions, and the corresponding computed derived magnitudes (chan[...]
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Mechanika / Akademia Górniczo-Hutnicza im. St. Staszica
2003 T. 22, z. 3 291-298
EN The synthesis of the optimal Vibration isolation systems of the biomechanical models of a seated human operator body subjected to random excitations with prediction, was presented. The active Vibration isolation systems were obtained for the complex critenon composed of covariances of accelerations [...]
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Advances in Electronics and Telecommunications
EN Prediction of future idle times of different channels based on history information allows a cognitive radio (CR) to select the best channels for control and data transmission. In contrast to earlier work, the proposed method works not only with a specific type of traffic but learns and classifies th[...]
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Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
EN Since the discovery of a powerful training algorithm, Artificial Neural Networks (ANN) have been attracting increasing attention of fluid mechanical engineers, who find newer and newer applications of ANNs in the field of fluid mechanics. This paper presents the typical development of a neural netwo[...]
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Journal of Ecological Engineering
2016 Vol. 17, nr 4 190--196
EN Recently, a lot of attention was paid to the improvement of methods which are used to air quality forecasting. Artificial neural networks can be applied to model these problems. Their advantage is that they can solve the problem in the conditions of incomplete information, without the knowledge of t[...]
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International Journal of Electronics and Telecommunications
EN Arbitrary and random motion of mobile ad hoc network nodes while communicating results in frequent topology changes and multiple disconnections of links. This dynamic environment challenges the routing of data from the source to the destination and imposes the need for prediction models to track the[...]
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Advances in Science and Technology Research Journal
2017 Vol. 11, no 1 161--165
EN The cold bulk forming is a technology that is commonly used in many industrial enterprises. Even though nowadays high demands are posed on labour productivity, quality and own production costs, the findings from practice suggest that not sufficient attention is paid to the issue of tool management. [...]
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Archives of Control Sciences
2017 Vol. 27, no. 2 351--359
EN This paper addresses the problem of navigating an autonomous vehicle using environmental dynamics prediction. The usefulness of the Game Against Nature formalism adapted to modelling environmental prediction uncertainty is discussed. The possibility of the control law synthesis on the basis of strat[...]
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Physicochemical Problems of Mineral Processing
EN In this study, a back propagation feed forward neural network, with two hidden layers (10:10:10:4), was applied to predict Cu grade and recovery in industrial flotation plant based on pH, chemical reagents dosage, size percentage of feed passing 75 μm, moisture content in feed, solid ratio, and grad[...]
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Journal of Polish Safety and Reliability Association
EN In the papere, there are presented the methods of identification of the critical infrastructure operation process on the basis of statistical data coming from this process realizations, in both cases, when the operation process is not related and related to the critical infrastructure operating env[...]
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Journal of Polish Safety and Reliability Association
EN Considering a significant influence of the critical infrastructure operating environment threats on its operation process and safety, based on semi-Markov processes theory, a convergent to reality model of the critical infrastructure operation process related to critical infrastructure operating env[...]
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