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Prace Wydziału Nawigacyjnego Akademii Morskiej w Gdyni
2008 Z. 22 45-52
PL W pracy został rozpatrzony problem dyskretno-ciągłego szeregowania niepodzielnych zadań na równoległych identycznych maszynach, mającego na celu minimalizację długości uszeregowania z ograniczeniami nałożonymi na zasób dyskretny i dodatkowy odnawialny zasób ciągły. Zasób ciągły, podzielny w sposób c[...]
EN A problem of scheduling nonpreemtable tasks on parallel identical machines under constraint on discrete resource and requiring, additionally, renewable continuous resource to minimize the schedule length is considered in the paper. A continuous resource is divisible continuously and is allocated to [...]
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Fundamenta Informaticae
EN We formalize the algorithms computing primitive recursive (PR) functions as the abstract state machines (ASMs) whose running length is computable by a PR function. Then we show that there exists a programming language (implementing only PR functions) by which it is possible to implement any one of t[...]
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Fundamenta Informaticae
EN In this paper, we study the pattern matching problem in given intervals. Depending on whether the intervals are given a priori for pre-processing, or during the query along with the pattern or, even in both the cases, we develop efficient solutions for different variants of this problem. In particul[...]
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Logistyka
2009 nr 3 CD-CD
PL W pracy przeanalizowano podstawowe możliwości jakie stwarza użycie modyfikacji znanego algorytmu mrówkowego przy rozwiązywaniu zagadnień poszukiwania optymalnych połączeń. Wykonano implementacje programistyczne oraz przeprowadzono symulacje z użyciem tego oprogramowania. Wnioski z symulacji mogą być[...]
EN In the paper ant class algoriths modifications were analyzed from application point of view for logistics problems. Software implementations were been done, and various simulations were executed with the software. The results could be usefull for detailing of the algorithms from point of view of spe[...]
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Zeszyty Naukowe Wydziału ETI Politechniki Gdańskiej. Technologie Informacyjne
2010 T. 19 73-78
PL Proof-number search to znana rodzina algorytmów służących do wyznaczania wartości pozycji w nielosowych grach dwóch graczy z pełną informacją. W wersji podstawowej pn-search doskonale radzi sobie z wyszukiwaniem strategii wygrywającej jednego z graczy. Jednak istnieje wiele znanych gier, w których o[...]
EN Proof-number search is a well-known family of algorithms for determining the value of positions in deterministic two-player games with perfect information. The basic version of proof-number search is very good for searching for one player winning strategy. However, there are many well-known games in[...]
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Advances in Materials Science
EN At the beginning of this work a short characteristic of the methodology of modelling rules of welding process is provided. The relation between both the intensive and extensive parameters are mainly discussed. Additionally, the theoretical bases of modelling of welding processes are presented. In fu[...]
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Computational Methods in Science and Technology
2016 Vol. 22, No. 3 127--131
EN For a harmonic oscillator, Nosé’s single-thermostat approach to simulating Gibbs’ canonical ensemble with dynamics samples only a small fraction of the phase space. Nosé’s approach has been improved in a series of three steps: [1] several two-thermostat sets of motion equations have been found which[...]
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International Journal of Electronics and Telecommunications
EN Preemption is a traffic engineering technique in Multiprotocol Switching Network that enables creation of high priority paths when there is not enough free bandwidth left on the route. Challenging part of any preemption method is to select the best set of paths for removal. Several heuristic methods[...]
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Computer Assisted Mechanics and Engineering Sciences
EN In the paper an algorithm for design reliability improvement is proposed. Its key part consists in the computation of the correlations between constraint functions and design variables which are subsequently used to find the new design iteration. It is shown that the optimal Latin hypercube (OLH) sa[...]
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Fundamenta Informaticae
EN The paper presents three methods for applying partitioning algorithms, used for generating abstract models for timed automata, to the case of time Petri nets. Each of these methods is based on a different approach to the concrete semantics of a net, and can potentially be more efficient than the oth[...]
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Machine Graphics and Vision
EN A new algorithm for compressing labelled trees is proposed in the paper. This algorithm allows to obtain a Directed Acyclic Graph (DAG) from a labelled tree in linear time. An experimental study is also given.
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Computational Methods in Science and Technology
EN Shuichi Nosé opened up a new world of atomistic simulation in 1984. He formulated a Hamiltonian tailored to generate Gibbs’ canonical distribution dynamically. This clever idea bridged the gap between microcanonical molecular dynamics and canonical statistical mechanics. Until then the canonical dis[...]
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Computational Methods in Science and Technology
EN The 2016 Snook Prize has been awarded to Diego Tapias, Alessandro Bravetti, and David Sanders for their paper “Ergodicity of One-Dimensional Systems Coupled to the Logistic Thermostat”. They introduced a relatively-stiff hyperbolic tangent thermostat force and successfully tested its ability to repr[...]
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Computational Methods in Science and Technology
EN The time-averaged Lyapunov exponents, f_ig, support a mechanistic description of the chaos generated in and by nonlinear dynamical systems. The exponents are ordered from largest to smallest with the largest one describing the exponential growth rate of the (small) distance between two neighboring p[...]
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Computational Methods in Science and Technology
2018 Vol. 24, No. 2 159--163
EN The one-dimensional Φ4 Model generalizes a harmonic chain with nearest-neighbor Hooke’s-Law interactions by adding quartic potentials tethering each particle to its lattice site. In their studies of this model Kenichiro Aoki and Dimitri Kusnezov emphasized its most interesting feature: because the q[...]
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Computational Methods in Science and Technology
2018 Vol. 24, No. 2 155--158
EN Considerable research has led to ergodic isothermal dynamics which can replicate Gibbs’ canonical distribution for simple (small) dynamical problems. Adding one or two thermostat forces to the Hamiltonian motion equations can give an ergodic isothermal dynamics to a harmonic oscillator, to a quartic[...]
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Information Systems in Management
2018 Vol. 7, No. 2 108--119
EN The paper discusses the need for recommendations and the basic recommendation systems and algorithms. In the second part the design and implementation of the recommender system for online art gallery (photos, drawings, and paintings) is presented. The designed customized recommendation algorithm is [...]
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Zeszyty Naukowe / Akademia Morska w Szczecinie
EN Through defining Water Traffic Black Spot and analyzing the advantages and disadvantages of identification methods of Road Traffic Black Spot, then choosing Quality Control Method to recognize water area of intensive traffic accidents and applying integrated influential intensity of accident rate ba[...]
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Zeszyty Naukowe / Akademia Morska w Szczecinie
EN This paper studies the performance of pattern matching algorithms with the goal of the detection and tracking of vessel targets in maritime radar images. We compare different methods using a database which consists of radar images from two different manufactures. The data covers a timespan of roughl[...]
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Zeszyty Naukowe / Akademia Morska w Szczecinie
EN Paper presents basic information on the Constant False Alarm Rate (CFAR) algorithms and assessment of their practical efficiency in maritime FM-CW radar. Experimental research comprised qualitative assessment of the different CFAR algorithms done by the comparison of radar video signals presented by[...]
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