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Wyświetlanie 1-15 z 3309
Tytuł:
On type-2 m-topological spaces
Autorzy:
Nazmul, Sk.
Powiązania:
https://bibliotekanauki.pl/articles/744630.pdf
Data publikacji:
2017-12-01
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
Multi sets
multi topologies
multi subspace
m2-topologies
mgp-maps
Opis:
In the present paper, we define a notion of an m2-topological space by introducing a count of openness of a multiset (mset in short) and study the properties of m2-subspaces, mgp-maps etc. Decomposition theorems involving m-topologies and m2-topologies are established. The behaviour of the functional image and functional preimage of an m2-topologies, the continuity of the identity mapping and a constant mapping in m2-topologies are also examined.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica; 2017, 16
2300-133X
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Categorical Abstract Logic: Hidden Multi-Sorted Logics as Multi-Term π-Institutions
Autorzy:
Voutsadakis, George
Powiązania:
https://bibliotekanauki.pl/articles/749924.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Behavioral Equivalence
Hidden Logic
Multi-Sorted Logic
Multi-term π-Institutions
Interpretability
Deductive Equivalence
Opis:
Babenyshev and Martins proved that two hidden multi-sorted deductive systems are deductively equivalent if and only if there exists an isomorphism between their corresponding lattices of theories that commutes with substitutions. We show that the π-institutions corresponding to the hidden multi-sorted deductive systems studied by Babenyshev and Martins satisfy the multi-term condition of Gil-F´erez. This provides a proof of the result of Babenyshev and Martins by appealing to the general result of Gil-F´erez pertaining to arbitrary multi-term π-institutions. The approach places hidden multi-sorted deductive systems in a more general framework and bypasses the laborious reuse of well-known proof techniques from traditional abstract algebraic logic by using “off the shelf” tools.
Źródło:
Bulletin of the Section of Logic; 2016, 45, 2
0138-0680
2449-836X
Pojawia się w:
Bulletin of the Section of Logic
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On parameters determination of multi-port equivalent scheme for multi-winding traction transformers
Autorzy:
Sobczyk, T. J.
El Hayek, J.
Powiązania:
https://bibliotekanauki.pl/articles/950657.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
multi-winding transformer
equivalent scheme
multi-port circuit
traction transformers
Opis:
This paper aims to present a new equivalent scheme of multi-windings traction transformers, based on multiport purely inductive circuit. The mathematical background of this equivalent scheme is described. The determination of the different scheme elements is made through a finite-elements calculation of both main and leakage inductances, for the case of a four-winding transformer. A procedure is defined, which allows to estimate the values of these elements from some measurements on the transformer at no-load and short-circuit operations. A specific strategy of short-circuit tests is described, allowing to determine all parameters in a rather simple way.
Źródło:
Archives of Electrical Engineering; 2015, 64, 1; 17-27
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Building multi-agent models applied to supply chain management
Autorzy:
Nawarecki, E.
Koźlak, J.
Powiązania:
https://bibliotekanauki.pl/articles/971016.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
multi-agent systems
multi-agent methodologies
supply chain management
Opis:
In this paper, a model of a multi-agent system for modelling and optimising supply chains is presented. The most popular methodologies of developing multi-agent systems and selected applications of the agent approach to modelling and optimisation of supply chains are described in brief. A pilot realisation of such a system is also presented, together with a selection of the subsequent experimental results obtained.
Źródło:
Control and Cybernetics; 2010, 39, 1; 149-176
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chaotic motion of a multi-articulated tower immersed in waving fluid: numerical experiment
Autorzy:
Uściłowska, A.
Kołodziej, J. A.
Powiązania:
https://bibliotekanauki.pl/articles/1986964.pdf
Data publikacji:
2002
Wydawca:
Politechnika Gdańska
Tematy:
multi-articulated tower
inverted pendulum
multi-potential system
equilibrium positions
multi-periodic motion
chaotic motion
Opis:
The offshore structures, such as multi-articulated towers, manipulators working in waving fluid are more and more popular structures. Commonly they are modelled as an inverted pendulum. The motion of such tower immersed in waving fluid is under consideration. It is assumed that the tower is hinged to the seabed by the hinge with friction. The joint of tower elements is the hinge with friction, as well. Motion of tower loaded by regular wave fluid force is considered. The numerical experiment shows that the multi-potential systems may move chaotically for some parameters of the tower and the fluid.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2002, 6, 3; 371-377
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A fuzzy approach to multi-objective mixed integer linear programming model for multi-echelon closed-loop supply chain with multi-product multi-time-period
Autorzy:
Akin Bas, Sema
Ahlatcioglu Ozkok, Beyza
Powiązania:
https://bibliotekanauki.pl/articles/406583.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
closed-loop supply chain management
multi-objective optimization
fuzzy mixed-integerlinear programming
inventory decision
Opis:
By the green point of view, supply chain management (SCM), which contains supplier and location selection, production, distribution, and inventory decisions, is an important subject being examined in recent years by both practitioners and academicians. In this paper, the closed-loop supply chain (CLSC) network that can be mutually agreed by meeting at the level of common satisfaction of conflicting objectives is designed. We construct a multi-objective mixed-integer linear programming (MOMILP) model that allows decision-makers to more effectively manage firms’ closed-loop green supply chain (SC). An ecological perspective is brought by carrying out the recycling, remanufacturing and destruction to SCM in our proposed model. Maximize the rating of the regions in which they are located, minimize total cost and carbon footprint are considered as the objectives of the model. By constructing our model, the focus of customer satisfaction is met, as well as the production, location of facilities and order allocation are decided, and we also carry out the inventory control of warehouses. In our multi-product multi-component multi-time-period model, the solution is obtained with a fuzzy approach by using the min operator of Zimmermann. To illustrate the model, we provide a practical case study, and an optimal result containing a preferable level of satisfaction to the decision-maker is obtained.
Źródło:
Operations Research and Decisions; 2020, 30, 1; 25-46
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design Principles of Multi-Chambered Gun
Autorzy:
Kovařik, M.
Powiązania:
https://bibliotekanauki.pl/articles/403324.pdf
Data publikacji:
2016
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
mechanics
internal ballistics
multi-chambered gun
Opis:
The multi-chambered gun concept is based on the effect of increasing muzzle velocity of weapon system without need of new technologies or excessive dimensions. The mathematical model of interior ballistics of the multi-chambered gun was assembled by means of extension and modification of the thermodynamic model of interior ballistics of conventional gun. The reliability of numerical solution of a model has been examined in the comparison with results of ballistic shootings with several arrangements of the experimental weapon system. Subsequently the numerical sensitivity analysis of the interior ballistics model has been carried out as well as the simplified system of analytical approximate expressions comprising the crucial gun design characteristics has been built up. Outputs of both the sensitivity analysis and simplified system could be used in the case of multi-chambered gun designing in order to reach maximum velocity with no simultaneous rise in maximal ballistic pressure.
Źródło:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2016, 7, 3 (25); 7-20
2081-5891
Pojawia się w:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Niching in evolutionary multi-agent systems
Autorzy:
Krzywicki, D.
Powiązania:
https://bibliotekanauki.pl/articles/305774.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
niching
evolutionary algorithms
multi-agent systems
Opis:
Niching is a group of techniques used in evolutionary algorithms, useful in several types of problems, including multimodal or nonstationary optimization. This paper investigates the applicability of these methods to evolutionary multi-agent systems (EMAS), a hybrid model combining the advantages of evolutionary algorithms and multi-agent systems. This could increase the efficiency of this type of algorithms and allow to apply them to a wider class of problems. As a starting point, a simple but flexible EMAS framework is proposed. Then, it is shown how to extend this framework in order to introduce niching, by adapting two classical niching methods. Finally, preliminary experimental results show the efficiency and the simultaneous discovery of multiple optima by this modified EMAS.
Źródło:
Computer Science; 2013, 14 (1); 77-95
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-operator Differential Evolution with MOEA/D for Solving Multi-objective Optimization Problems
Autorzy:
Aggarwal, Sakshi
Mishra, Krishn K.
Powiązania:
https://bibliotekanauki.pl/articles/2142322.pdf
Data publikacji:
2022
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
erential evolution
multi-objective
mutation operator
weighted-aggregation
Opis:
In this paper, we propose a multi-operator differentia evolution variant that incorporates three diverse mutation strategies in MOEA/D. Instead of exploiting the local region, the proposed approach continues to search for optimal solutions in the entire objective space. It explicitly maintains diversity of the population by relying on the benefit of clustering. To promowe convergence, the solutions close to the ideal position, in the objective space are given preference in the evolutionary process. The core idea is to ensure diversity of the population by applying multiple mutation schemes and a faster convergence rate, giving preference to solutions based on their proximity to the ideal position in the MOEA/D paradigm. The performance of the proposed algorithm is evaluated by two popular test suites. The experimental results demonstrate that the proposed approach outperforms other MOEA/D algorithms.
Źródło:
Journal of Telecommunications and Information Technology; 2022, 3; 85--95
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-frame Image Super-resolution Reconstruction Using Multi-grained Cascade Forest
Autorzy:
Wang, Yaming
Luo, Zhikang
Huang, Wenqing
Powiązania:
https://bibliotekanauki.pl/articles/226035.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
multi-frame image SR
image registration
SRMCF
image fusion
Opis:
Super-resolution image reconstruction utilizes two algorithms, where one is for single-frame image reconstruction, and the other is for multi-frame image reconstruction. Singleframe image reconstruction generally takes the first degradation and is followed by reconstruction, which essentially creates a problem of insufficient characterization. Multi-frame images provide additional information for image reconstruction relative to single frame images due to the slight differences between sequential frames. However, the existing super-resolution algorithm for multi-frame images do not take advantage of this key factor, either because of loose structure and complexity, or because the individual frames are restored poorly. This paper proposes a new SR reconstruction algorithm for images using Multi-grained Cascade Forest. Multi-frame image reconstruction is processed sequentially. Firstly, the image registration algorithm uses a convolutional neural network to register low-resolution image sequences, and then the images are reconstructed after registration by the Multi-grained Cascade Forest reconstruction algorithm. Finally, the reconstructed images are fused. The optimal algorithm is selected for each step to get the most out of the details and tightly connect the internal logic of each sequential step. This novel approach proposed in this paper, in which the depth of the cascade forest is procedurally generated for recovered images, rather than being a constant. After training each layer, the recovered image is automatically evaluated, and new layers are constructed for training until an optimal restored image is obtained. Experiments show that this method improves the quality of image reconstruction while preserving the details of the image.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 4; 687-692
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi Queue Approach for Network Services Implemented for Multi Core CPUs
Autorzy:
Hasse, M.
Nowicki, K.
Woźniak, J.
Powiązania:
https://bibliotekanauki.pl/articles/307876.pdf
Data publikacji:
2011
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
generic purpose CPU
multi- core
networks
queue
network services
Opis:
Multiple core processors have already became the dominant design for general purpose CPUs. Incarnations of this technology are present in solutions dedicated to such areas like computer graphics, signal processing and also computer networking. Since the key functionality of network core components is fast package servicing, multicore technology, due to multi tasking ability, seems useful to support packet processing. Dedicated network processors characterize very good performance but at the same time high cost. General purpose CPUs achieve incredible performance, thanks to task distribution along several available cores and relatively low cost. The idea, analyzed in this paper, is to use general purpose CPU to provide network core functionality. For this purpose parameterized system model has been created, which represents general core networking needs. This model analyze system parameters influence on system performance.
Źródło:
Journal of Telecommunications and Information Technology; 2011, 3; 57-62
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Infrastructure for multi-floor virtual enterprises system
Infrastruktura multi-floor w systemach wirtualnych przedsiębiorstw
Autorzy:
Dzhuguryan, T.
Jóźwiak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/113498.pdf
Data publikacji:
2016
Wydawca:
STE GROUP
Tematy:
system of multi-floor
flexible manufacturing
time of cycle
elevator
performance
system multi-floor
elastyczna produkcja
czas cyklu
transport pionowy
osiągi
Opis:
The multi-floor manufacturing is widely used in the megacities with high-density population due to the limited areas for industrial development and also the necessity of unloading transport streams. The article gives the analysis of an infrastructure for the multi-floor virtual enterprises system that allows allocating the components and studying their role in maintaining the main production. The conditions for the harmonization of the vertical transport carrying capacity and of the performance of a multi-floor assembly manufacturing are determined. The morphological analysis of ownership patterns of the fixed assets for the multi-floor virtual enterprises is defined. The article offers to define the enterprises-homes as system of multi-floor virtual workhouses.
Wytwarzanie multi-floor jest szeroko stosowane w wielkich miastach o dużej gęstości populacji z powodu ograniczonych obszarów dla rozwoju przemysłu, a także konieczności usprawnienia strumieni transportowych. Artykuł zawiera analizę infrastruktury, dla wielokondygnacyjnego systemu wirtualnych przedsiębiorstw. Analiza ta umożliwia przydzielanie komponentów i badanie ich roli w utrzymaniu produkcji głównej. W artykule ustalono warunki dotyczące harmonizacji pionowego transportu, ładowności oraz wykonania produkcji montażowej multifloor. Ponadto przeprowadzono morfologiczną analizę wzorców własności środków trwałych dla wielokondygnacyjnych wirtualnych przedsiębiorstw. W artykule proponuje się zdefiniowanie przedsiębiorstwa - domu, jako systemu multi-floor wirtualnych przedsiębiorstw.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2016, 3 (15); 70-78
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Database of multi-variant machining process plan
Autorzy:
Gola, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/409500.pdf
Data publikacji:
2014
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
Database
multi-variant machining process plan
access
Opis:
This paper presents database of multi-variant machining process plan. This database is a part of CAPP (Computer Aided Process Planning) – prototype system, which was built on the basis of algorithm generating multi-variant process plan. Database was implemented to Microsoft Access 2010.
Źródło:
Research in Logistics & Production; 2014, 4, 3; 201-207
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi Drug Resistant Tuberculosis
Autorzy:
Zacharia, Balaji
Roy, Antony
Powiązania:
https://bibliotekanauki.pl/articles/454987.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
BACTEC
MDRTB
multi drug resistant tuberculosis Mycobacterium
tuberculosis
Opis:
Introduction. Tuberculosis is one of the oldest infections known to mankind. Of all infectious diseases, tuberculosis causes the most fatalities of any infection. The incidence of tuberculosis on the rise due to the increased prevalence of HIV infection. The incidence of drug resistance strains of mycobacterium is also on the rise. When the mycobacterium is resistant to both INH and rifampicin it is called multi drug resistant tuberculosis. There is a primary and an acquired type of drug resistance. Multidrug resistant tuberculosis is a not only a problem for the patient but also for society at large. The treatment of multidrug resistant tuberculosis requires an entirely different approach. Aim. In this review, we are going to describe the etiopathogenesis, diagnosis, investigations and treatment of multi drug resistant tuberculosis. Material and methods. Analysis of the current literature. Results. Genetic factors, previous treatment, and other factors predisposes the onset of drug resistance. By early detection and prevention of spread of drug resistant strains we can prevent the spread of resistant strains. Conclusion. Drug resistance in tuberculosis is a very complex and dangerous problem. We have to prevent the development and spread of MDRTB. Good quality drugs should be used and made available to all sections of the population. Enhancing the National tuberculosis programs is the best way to attain an effective way to control this menace.
Źródło:
European Journal of Clinical and Experimental Medicine; 2019, 3; 262-269
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Planning System for Multi-Agent Based Reconfigurable Fixtures
Autorzy:
Szynkiewicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/308493.pdf
Data publikacji:
2010
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
fixture planner
multi-agent systems
optimization
Opis:
This paper describes a concept of the planning system for self adaptable, reconfigurable fixtures composed of mobile locators (robotic agents) that can freely move on a bench and reposition below the supported part, without removing the part from the fixture. The main role of the planner is to generate the admissible plan of relocation of the mobile agents. A constrained nonlinear optimization problem is formulated to find the optimal locations for supporting heads.
Źródło:
Journal of Telecommunications and Information Technology; 2010, 3; 71-76
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 3309

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