Skocz do pozycji: 1.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 2.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 3.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 4.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 5.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 6.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 7.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 8.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 9.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 10.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 11.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 12.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 13.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 14.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 15.

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

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 16.

Tytuł:

Multi-source and multi-target iron ore blending method in open pit mine

Autorzy:

Yao, Jiang
Liu, Chunhui
Huang, Guichen
Xu, Kai
Yuan, Qingbo

Powiązania:

https://bibliotekanauki.pl/articles/2203345.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

ruda żelaza
kopalnia odkrywkowa
kopalnia żelaza
iron ore blending
multi-source and multi-target
open pit mine

Opis:

Iron ore blending in an open-pit mine is an important means to ensure ore grade balance and resource recycling in iron mine industrial production. With the comprehensive recovery and utilisation of resource mining, the multi-source and multi-target ore blending method has become one of the focuses of the mining industry. Scientific and reasonable ore blending can effectively reduce the transportation cost of the enterprise. It can also ensure that the ore grade, washability index and iron carbonate content meet the requirements of the concentrator and significantly improve the comprehensive utilisation rate and economic benefits of the ore. An ore blending method for open-pit iron ore is proposed in this paper. The blending method is realised by establishing the ore blending model. This model aims to achieve maximum ore output and the shortest transportation distance, ore washability index, total iron grade, ferrous iron grade and iron carbonate content after the ore blending meets the requirements. This method can meet the situation of a single mine to a single concentrator and that of a single mine to multiple concentrators. According to the results of ore blending, we can know the bottleneck of current production. Through targeted optimisation management, we can tap the production potential of an open-pit mine.

Źródło:

Archives of Mining Sciences; 2022, 67, 4; 631--644
0860-7001

Pojawia się w:

Archives of Mining Sciences

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 17.

Tytuł:

Generation of reducts and rules in multi-attribute and multi-criteria classification

Autorzy:

Susmaga, R.
Słowiński, R.
Greco, S.
Matarazzo, B.

Powiązania:

https://bibliotekanauki.pl/articles/205913.pdf

Data publikacji:

2000

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

decision rules
dominance relation
intelligent information systems
multi-attribute and multi-criteria classification
reducts of attributes and criteria
rough sets theory

Opis:

The paper addresses the problem of analysing information tables which contain objects described by both attributes and criteria, i.e. attributes with preference-ordered scales. The objects contained in those tables, representing exemplary decisions made by a decision maker or a domain expert, are usually classified into one of several classes that are also often preference-ordered. Analysis of such data using the classic rough set methodology may produce improper results, as the original rough set approach is not able to discover inconsistencies originating from consideration of typical criteria, like e.g. product quality, market share or debt ratio. The paper presents the framework for the analysis of both attributes and criteria and a very promising algorithm for generating reducts. The algorithm presented is evaluated in an experiment with real-life data sets and its results are compared to those by two other reduct generating algorithms.

Źródło:

Control and Cybernetics; 2000, 29, 4; 969-988
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 18.

Tytuł:

Rola samorządu gminnego w multi-level governance w Republice Federalnej Niemiec
The role of local government in multi-level governance in Federal Republic of Germany

Autorzy:

Balcerek-Kosiarz, Marta

Powiązania:

https://bibliotekanauki.pl/articles/1590830.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego

Tematy:

Governance
Multi-level Governance
local government
Germany
multi-level governance
samorząd gminny
Niemcy

Opis:

Celem artykułu jest zaprezentowanie, w jaki sposób koncepcja multi-level governance została dostosowana do specyfiki niemieckiego samorządu gminnego oraz na czym polega jej istota. Autorka doszła do dwóch ustaleń. Po pierwsze, powstanie multi-level governance w Niemczech oparte jest na działaniach odgórnych i następuje od kraju związkowego do gmin (top-down). Tworzenie układu sieciowego wynika wówczas z przekonania władz państwowych o efektywniejszej realizacji zadań publicznych opartej na współpracy z podmiotami prywatnymi, których działania moderowane są przez podmioty władcze. Po drugie, wprowadzenie multi-level governance na poziomie lokalnym poprzedzone jest regional governance na szczeblu krajów związkowych stanowiącą dostosowanie koncepcji governance do specyfiki państwa federalnego. Najważniejszym jednak wnioskiem płynącym z artykułu jest ten, że multi-level governance zostało wprowadzono w strukturę samorządu gminnego za pośrednictwem specjalnego typu zadań publicznych (Gemeinschaftsaufgaben).
The aim of this article is to present how the concept of multi-level governance was adopted to the German local government. The author made two arrangements. Firstly, the emergence of multi-level governance in Germany is based on top-down activities, which occur between federal states and communities. Creating network systems results from the conviction of the state authorities about fulfillment of public tasks, which is more effective with private organizations, which are moderated by public entities. Secondly, before implementing multi-level governance on local level, the regional governance was posed on the level of federal states, which is the adjustment of governance’s concept to the specify of federal states. Notwithstanding, the most important result from this article is the fact, that multi-level governance was implemented to the structure of local government in the characteristic type of public task (Gemeinschaftsaufgaben).

Źródło:

Studia Administracyjne; 2018, 10; 51-65
2080-5209
2353-284X

Pojawia się w:

Studia Administracyjne

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 19.

Tytuł:

Approximate homomorphisms and derivation in multi-Banach algebras

Autorzy:

Agarwal, Ravi P.
Cho, Yeol Je
Park, Choonkil
Saadati, Reza

Powiązania:

https://bibliotekanauki.pl/articles/1912850.pdf

Data publikacji:

2011

Wydawca:

Polskie Towarzystwo Matematyczne

Tematy:

Additive functional equation
fixed point
homomorphism in multi-Banach algebra
generalized Hyers-Ulam stability
derivation on multi-Banach algebra
multi-normed space

Opis:

Using fixed point methods, we prove the generalized Hyers-Ulam stability of homomorphisms in multi-Banach algebras and derivations on multi-Banach algebras for the additive functional equation \[ \sum_{i=1}^m f\left(mx_i+\sum_{j=1, j\not=i}^m x_j\right) + f\left(\sum_{i=1}^m x_i\right) = 2 f \left(\sum_{i=1}^{m} mx_i\right) \] for each \(m\in \mathbb{N}\) with \(m\geq 2\).

Źródło:

Commentationes Mathematicae; 2011, 51, 1
0373-8299

Pojawia się w:

Commentationes Mathematicae

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 20.

Tytuł:

Multi-input multi-output fuzzy logic controller for utility electric vehicle

Autorzy:

Gasbaoui, B.
Abdelkader, Ch.
Adellah, L.

Powiązania:

https://bibliotekanauki.pl/articles/141051.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

pojazd elektryczny
modulacja wektora przestrzennego
sterowanie rozmyte
electric vehicle
electronic differential
space vector modulation
fuzzy logic control
multi-input multi-output fuzzy logic control

Opis:

Currently commercialization of electric vehicle (EV) is based to minimize the time of starting and acceleration. To undergo this problem multi-input multi-output fuzzy logic controller (MIMO-FLC) affect on propelled traction system forming MMS process was proposed. This paper introduces a MIMO-FLC applied on speeds of electric vehicle, the electric drive consists of two directing wheels and two rear propulsion wheels equipped with two light weight induction motors. The EV is powered by two motors of 37 kilowatts each one, delivering a 476 Nm total torque. Its high torque (476Nm) is instantly available to ensure responsive acceleration performance in built-up areas. Acceleration and steering are ensured by an electronic differential system which maintains robust control for all cases of vehicle behavior on the road. It also allows controlling independently every driving wheel to turn at different speeds in any curve. Direct torque control based on space vector modulation (DTC-SVM) is proposed to achieve the tow rear driving wheel control. The MIMO-FLC control technique is simulated in MATLAB SIMULINK environment. The simulation results have proved that the MIMO-FLC method decreases the transient oscillations and assure efficiency comportment in all type of road constraints, straight, slope, descent and curved road compared to the single input single output fuzzy controller (SISO-FLC).

Źródło:

Archives of Electrical Engineering; 2011, 60, 3; 239-256
1427-4221
2300-2506

Pojawia się w:

Archives of Electrical Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 21.

Tytuł:

Are the Europarties Real Political Parties? National Parties’ Involvement in Multi-level Structures of European Political Parties

Autorzy:

Kosowska-Gąstoł, Beata

Powiązania:

https://bibliotekanauki.pl/articles/519435.pdf

Data publikacji:

2017

Wydawca:

Uniwersytet Mikołaja Kopernika w Toruniu. Wydawnictwo UMK

Tematy:

Europarties
multi-level approach
multi-level organization
vertical integration

Opis:

Europarties are regarded as multi-level organizations, like parties operating in federal or devolved states. Examined is whether they can even be treated as political parties sensu stricto and whether the concepts used to test the relations between the national and regional party structures (vertical integration, influence) could be used to study relationships between the national and European structures. It was indicated that Europarties can be considered both as the additional arenas of national parties’ activity and independent political actors consisted of national parties (multi-level parties). The second perspective was used to research 13 existing Europarties. In result, the similarities between the PES and PEL, but differences between the EPP and PES in term of vertical integration and influence were shown. Hence, in the article was proven that there is no one model of relations between the national and European party structures and the parties differ from each other as far as their internal structures are concerned.

Źródło:

Historia i Polityka; 2017, 20(27); 9-29
1899-5160
2391-7652

Pojawia się w:

Historia i Polityka

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 22.

Tytuł:

The causes of ethnic conflict in Multi-ethnic societies

Autorzy:

Mohammadzadeh, Hossien

Powiązania:

https://bibliotekanauki.pl/articles/1190150.pdf

Data publikacji:

2016

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Ethnic
Ethnic conflict
Multi-ethnic society

Opis:

Ethnic conflicts were the main forms of political instability in the multi ethnic societies during second half of twenty century and beginning of new century. The goal of this study determinates social context of ethnic conflict in multi ethnic societies. The methodology was comparative study. Data gathering by documents and secondary data. Data and documents show that Ethnic differences' and discrimination were the main cause of ethnic violence. The results indicated that much country in the world encounter with ethnic conflict during decades. But incidence of ethnic violence was different in varying country. In developing country incidence were low and in the developing sever. Developing country management ethnic conflict by participation and justice policy that the equality is the best way for resolve this problem.

Źródło:

World Scientific News; 2016, 42; 156-166
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 23.

Tytuł:

Multi-Criteria Assessment of Ergonomic Conditions of Work. Case Study

Autorzy:

Korban, Zygmunt

Powiązania:

https://bibliotekanauki.pl/articles/2064667.pdf

Data publikacji:

2021

Wydawca:

STE GROUP

Tematy:

discrete multi-criteria decision
OHS

Opis:

The supervision of OHS conditions (working conditions and the realization of work tasks) is one of the basic obligations of the employer. The number and variety of describing elements (and thus being subject to assessment) means that synthetic measures (measures that are one-dimensional images of complex phenomena) are more and more frequently applied to solve problems of that type. Although the methods of multivariate statistics used for this purpose differ in the way they treat assessment criteria (defining mutual dependency thresholds, unifying the field of compared criteria), the final effect of their application always offers the option to replace the entire set of features describing a given object with one variable (aggregate). The article presents a potential applicability of one of the so-called discrete multi-criteria decision-making methods (Simple Additive Weighting), which allows to determine a linear combination of normalized elements of the decision matrix and the elements of weight vector. As part of the article, the working conditions at 5 workstations were assessed (a miner’s workstation in 5 underground mine workings being excavated), taking into account 8 assessment criteria (6 were cost criteria and 2 – criteria of qualitative character). In effect of the application of the Simple Additive Weighting method, we could determine the ranking vector R, which allowed to order the examined objects and to carry out a comprehensive assessment of OSH conditions occurring in them.

Źródło:

Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 14--22
2545-2827

Pojawia się w:

Multidisciplinary Aspects of Production Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 24.

Tytuł:

The airport gate assignment problem – multi-objective optimization versus evolutionary multi-objective optimization

Autorzy:

Kaliszewski, I.
Miroforidis, J.
Stańczak, J.

Powiązania:

https://bibliotekanauki.pl/articles/305661.pdf

Data publikacji:

2017

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

airport gate assignment problem
Evolutionary Multi-objective Optimization
mixed-integer programming

Opis:

In this paper, we approach the Airport Gate Assignment Problem by Multi-objective Optimization as well as Evolutionary Multi-objective Optimization. We solve a bi-criteria formulation of this problem by the commercial mixed-integer programming solver CPLEX and a dedicated Evolutionary Multi-objective Optimization algorithm. To deal with multiple objectives, we apply a methodology that we developed earlier to capture decision-maker preferences in multi-objective environments. We present the results of numerical tests for these two approaches.

Źródło:

Computer Science; 2017, 18 (1); 41-52
1508-2806
2300-7036

Pojawia się w:

Computer Science

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 25.

Tytuł:

Effect of unequal power allocation in turbo coded multi-route multi-hop networks

Autorzy:

Wada, T.
Jamalipour, A.
Ohuchi, K.
Okada, H.
Saito, M.

Powiązania:

https://bibliotekanauki.pl/articles/309168.pdf

Data publikacji:

2006

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

multi-route transmissions
turbo codes
power allocation

Opis:

Multi-hop ad hoc networks are promising candidates for next generation mobile communications. They have sufficient channel capacity to achieve high data rate transmission for large number of users. One advantage of multi-hop networks is to realize multi-route transmissions. Since information bit streams can be transmitted over multiple routes, we can obtain route diversity effect. In order to enhance the route diversity effect, we usually introduce forward error correction schemes. Turbo coding is one of suitable coding methods for multi-hop networks. The turbo encoder generates one message stream and two parity streams whilst the message stream is more important than the parity streams for achieving reliable communications. Thus an unequal power allocation to the message and parity streams could be effective in improving the performance. In this paper, the effect of unequal power allocation for turbo coded multi-hop networks is investigated. Assuming the channel as additive white Gaussian and binary symmetric, we will show considerable performance improvement by unequal power allocation in terms of the bit error rate performance in multi-route multi-hop networks.

Źródło:

Journal of Telecommunications and Information Technology; 2006, 1; 46-53
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 26.

Tytuł:

Multi Wedge Cross Rolling of Axle Forgings

Autorzy:

Bulzak, Tomasz

Powiązania:

https://bibliotekanauki.pl/articles/28099513.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

cross wedge rolling
fracture
multi wedge tools
FEM
axles

Opis:

This paper presents the results of research into the cross wedge rolling (CWR) process of axle forgings. The presented results concern the parallel rolling process with two wedges. The use of two parallel wedges is aimed at shortening the tool length (increasing productivity) and reducing the values of wedge opening angles and increasing the forming angles, so that the condition 0.04 ≤ tgαtgβ ≤ 0.08 is maintained to guarantee the highest quality forgings. The article analyses the influence of the design of the double wedge tool on the geometric correctness of the forgings obtained, the value of the failure criterion and the force parameters of the process. The results obtained show that the use of multi wedge tools improves rolling conditions by increasing productivity and reducing the tendency of the material to crack with appropriately selected tool parameters.

Źródło:

Archives of Metallurgy and Materials; 2023, 68, 2; 697--701
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 27.

Tytuł:

Strength analysis of a multi-clip joint
Analiza złącza wielozaciskowego

Autorzy:

Juraszek, J.

Powiązania:

https://bibliotekanauki.pl/articles/279304.pdf

Data publikacji:

2005

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

multi-clip joint
shapes
jaw
FEM

Opis:

The paper is concerned with strength analysis of multi-clip joints. Such structures enable visible growth of the carrying capacity and make them elements easily assembled by the clamping jaws and a single-clamp press. Each joint exerts an appreciable influence upon the safety level of the whole structure. A numerical analysis was performed to assess the effect of clearance between a sleeve and rope upon the joint quality. Phenomena emerging in the area between the clips were analysed as well. Some strength tests related to the process of drawing the wire rope out of the sleeve were also investigated. Changes in the stiffness of the clamping sleeve were analysed in view of the influence of the aforementioned factors upon the carrying capacity of joints and the sleeve material effort. Experimental investigations were conducted as well aiming at the determination of the smallest possible number of clips or the effective length of joints necessary for carrying the loads higher than the admissible load of the wire rope.
W pracy przeprowadzono analizę złącz wielozaciskowych. Umożliwiają one osiągnięcie większej nośności złącza poprzez zastosowanie szczęk zaciskających i prasy do zacisków jednokrotnych. Złącza mają istotny wpływ na poziom bezpieczeństwa całej konstrukcji, w której są zainstalowane. Przeprowadzono analizę numeryczną oceniającą wpływ wielkości luzu między tuleją a liną, analizę zjawisk zachodzących między poszczególnymi zaciskami, analizę procesu wyciągania liny oraz zmiany sztywności tulei zaciskanej. Wykonane następnie badania doświadczalne umożliwiły wyznaczenie najmniejszej liczby zacisków lub długości efektywnej złącza niezbędnej do przeniesienia obciążenia większego od nominalnego obciążenia lin.

Źródło:

Journal of Theoretical and Applied Mechanics; 2005, 43, 4; 893-907
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 28.

Tytuł:

Multi camera triggering and synchronization issue : case study

Autorzy:

Hyla, P.

Powiązania:

https://bibliotekanauki.pl/articles/245853.pdf

Data publikacji:

2016

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

multi-camera synchronization
GigE
hardware triggering
software triggering

Opis:

The problem of multi-camera system, in which the synchronization was a priority issue, has been raised in the beginning of the 20th century. It was caused by significant growth of application, in which computer vision technology realized in real-time, mode play the major role. Lately multi-camera synchronization problem is related to threedimensional reconstruction. It is estimated that 3D imaging market was worth 16.6 billion USD by 2020 year (in 2015 this market was worth only 4.9 billion USD). This constitute raise at 27.64% calculated as CAGR (Compound Annual Growth Rate) indicator. However, presently there exists many issues disturbing in develop full functional 3D imaging systems wherein robust and mapping accuracy are not related with the system total price. Multi-camera imaging (MCI) technology is a perfect candidate to obtain 3D imaging, moreover the systems contains this type of solution already existed but they possess limitation. First of all, MCI are perfect for reconstruction static objects. This paper describes the common known problem concerning multi-camera system in which correlation between independently taken images from the multiple viewpoints must be extremely high in the time domain. However, some kinds of application do not require perfect snapshot synchronization but time delay must be exactly known. Generally, camera synchronicity issue can be achieved through hardware or software solution. Hardware triggering usually ensures high synchronicity precision and is robust but it is always associated with expensiveness. In turn of software triggering the application architecture in hardware point of view are simpler and inexpensive although they are uncertainty as hardware solution. Additionally, in the paper author's main attention was focused on possibility of synchronization pentadruple cameras system with GigE interface with hardware and software triggering and estimation software solution average time delay in comparison with hardware triggering.

Źródło:

Journal of KONES; 2016, 23, 3; 193-200
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 29.

Tytuł:

Compactly supported multi-wavelets

Autorzy:

Banaś, W.

Powiązania:

https://bibliotekanauki.pl/articles/255374.pdf

Data publikacji:

2012

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

compactly supported multi-wavelet
compactly supported scaling function
multiresolution analysis
expansive matrix

Opis:

In this paper we show some construction of compactly supported multi-wavelets In L2(Rd), d ≥ 2 which is based on the one-dimensional case, when d = 1. We also demonstrate that some methods, which are useful in the construction of wavelets with a compact support at d = 1, can be adapted to higher-dimensional cases if A ∈Mdxd(Z) is an expansive matrix of a special form.

Źródło:

Opuscula Mathematica; 2012, 32, 1; 21-29
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 30.

Tytuł:

Interference in Multi-beam Antenna System of 5G Network

Autorzy:

Kelner, Jan M.
Ziółkowski, Cezary

Powiązania:

https://bibliotekanauki.pl/articles/226986.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

systems and networks
interference
multi-elliptical propagation model
multi-beam antenna system
simulation studies
massive MIMO

Opis:

Massive multiple-input-multiple-output (MIMO) and beamforming are key technologies, which significantly influence on increasing effectiveness of emerging fifth-generation (5G) wireless communication systems, especially mobile-cellular networks. In this case, the increasing effectiveness is understood mainly as the growth of network capacity resulting from better diversification of radio resources due to their spatial multiplexing in macro- and micro-cells. However, using the narrow beams in lieu of the hitherto used cell-sector brings occurring interference between the neighboring beams in the massive-MIMO antenna system, especially, when they utilize the same frequency channel. An analysis of this effect is the aim of this paper. In this case, it is based on simulation studies, where a multi-elliptical propagation model and standard 3GPP model are used. We present the impact of direction and width of the neighboring beams of 5G new radio gNodeB base station equipped with the multi-beam antenna system on the interference level between these beams. The simulations are carried out for line-of-sight (LOS) and non-LOS conditions of a typical urban environment.

Źródło:

International Journal of Electronics and Telecommunications; 2020, 66, 1; 17-23
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 31.

Tytuł:

Real estate development multi-product

Autorzy:

Pluta-Olearnik, Mirosława

Powiązania:

https://bibliotekanauki.pl/articles/522140.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Ekonomiczny w Katowicach

Tematy:

Housing needs
Multi-product
Real estate developer
Real estate market

Opis:

The concept of real estate multi-product involves multi-functional development of an area, focused on the comfort of potential inhabitants, i.e. application of large areas where people may live, work, shop and spend their free time actively. This trend is observable at the Polish residential estate market, especially in large cities, including Wroclaw. The objective of the paper is to identify this type of investments at Wroclaw real estate market. The discussion is based on the analysis of specialist literature and case analysis. The selected examples reflect changing consumer expectations and aspirations concerning multifunctional nature of the offer they are provided with, i.e. their expectations and aspirations to obtain a welltailored real estate development multi-product.

Źródło:

Journal of Economics and Management; 2015, 22; 142-150
1732-1948

Pojawia się w:

Journal of Economics and Management

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 32.

Tytuł:

Multi-Objective Optimization of Motor Vessel Route

Autorzy:

Marie, S.
Courteille, E.

Powiązania:

https://bibliotekanauki.pl/articles/117604.pdf

Data publikacji:

2009

Wydawca:

Uniwersytet Morski w Gdyni. Wydział Nawigacyjny

Tematy:

route planning
Optimization of Vessel Route
multi-objective optimization
Motor Vessel
Optimal Route
Multi-Objective Genetic Algorithm (MOGA)
Bézier Curve
MATLAB

Opis:

This paper presents an original method that allows computation of the optimal route of a motor vessel by minimizing its fuel consumption. The proposed method is based on a new and efficient meshing procedure that is used to define a set of possible routes. A consumption prediction tool has been developed in order to estimate the fuel consumption along a given trajectory. The consumption model involves the effects of the meteorological conditions, the shape of the hull and the power train characteristics. Pareto-optimization with a Multi-Objective Genetic Algorithm (MOGA) is taken as a framework for the definition and the solution of the multi-objective optimization problem addressed. The final goal of this study is to provide a decision helping tool giving the route that minimizes the fuel consumption in a limited or optimum time.

Źródło:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 2; 133-141
2083-6473
2083-6481

Pojawia się w:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 33.

Tytuł:

Port tugboat formation multi-agent control system

Autorzy:

Koznowski, W.
Łebkowski, A.

Powiązania:

https://bibliotekanauki.pl/articles/2063990.pdf

Data publikacji:

2021

Wydawca:

Uniwersytet Morski w Gdyni. Wydział Nawigacyjny

Tematy:

tug operations
Maritime Safety Committee
International Maritime Organization
Multi-Agent System
Multi-Agent Conbtrol System
Autonomous Vessels
e-Navigation
Artificial Intelligence

Opis:

The publication presents the structure of the agent system, tasked with control of the formation of unmanned port tugboats capable of performing pilot and towing services. The use of autonomous tugboats with installed software was presented with respect to the existing regulations related to Resolution MSC.467 developed by the Maritime Safety Committee (MSC) belonging to the International Maritime Organization (IMO), which creates guidelines for the definition and harmonization of the structure and format of maritime services in the context of e-navigation. The use of a multi-agent system structure enables synergistic cooperation of tugboats carrying out joint port operations, such as: assistance in maneuvers of ships, precision movement of ships and other objects in port areas, monitoring and patrolling of port areas, carrying out ice operations, carrying out inspections of quays, the possibility of assistance in liquidation of petroleum and similar pollutant spills. The paper presents the structure of the agent system and the description of possible scenarios of port operations. The control algorithms and the applied methods of artificial intelligence, such as evolutionary algorithms with elements of fuzzy logic, were discussed. The recorded traffic parameters from the actions carried out in the simulator of the marine navigation environment were presented.

Źródło:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 3; 807--814
2083-6473
2083-6481

Pojawia się w:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 34.

Tytuł:

On the value function for multi-isotope mixtures separation

Autorzy:

Palkin, V. A.

Powiązania:

https://bibliotekanauki.pl/articles/347060.pdf

Data publikacji:

2004

Wydawca:

Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej

Tematy:

isotope separation
value function
multi-isotope mixtures

Opis:

One of the possible approaches to the introduction of the value function in the case of multi-isotope mixtures is presented. It is based on a simplified model of separation processes in cascades and elements with multiplication of elementary effects of separation. A differential equation, being a necessary condition of the determination of the value function, is derived from the analysis of this model. Its general solution contains arbitrary constants which should be obtained considering boundary conditions and specific features of the separation process. Additional conditions concerning use of the found solutions in cascade criteria of an estimation of separation efficiency are stipulated. The applicability of various kinds of the value function forming at different conditions is analyzed. The forms of the value function which reflect best the optimal cascade with assigned external concentrations of the desired isotope and the matched abundance ratio cascade (MARC) are established.

Źródło:

Ars Separatoria Acta; 2004, 3; 51-61
1731-6340

Pojawia się w:

Ars Separatoria Acta

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 35.

Tytuł:

Multi-Criteria Optimization in Fuel Distribution

Autorzy:

Pempera, J.
Żelazny, D.

Powiązania:

https://bibliotekanauki.pl/articles/409566.pdf

Data publikacji:

2015

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

vehicle routing problem
multi-criteria
discrete optimization
fuel distribution

Opis:

This paper deals with some computational study of multi-criteria optimization in fuel distribution problem. We consider vehicle routing problem, e.g. routing of a fleet of tank trucks, for one of the famous polish petroleum companies. For the purpose of solving this problem, we developed the random search algorithm, which explores the broad range of feasible sets of routes and searches for non-dominated multi-criteria solutions. The problem is examined on real data, which contains distances between 50 petrol stations and one central warehouse (refinery). Obtained results indicate, that it is possible to obtain single solution and satisfy both optimization criteria. Based on the analysis of the collected data, we formulate a number of proposals useful in future for construction of algorithms for multi-criteria fuel distribution optimization.

Źródło:

Research in Logistics & Production; 2015, 5, 1; 77-84
2083-4942
2083-4950

Pojawia się w:

Research in Logistics & Production

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 36.

Tytuł:

Implications of Multi-sensory Approach for Child L2 Vocabulary Acquisitio

Autorzy:

Zawodniak, Joanna

Powiązania:

https://bibliotekanauki.pl/articles/916675.pdf

Data publikacji:

2018-11-01

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

Implications
Multi-sensory Approach
L2

Opis:

Teaching a foreign language to young learners requires of the teacher a special ability to involve them in a variety of activities explicitly accommodating their need for whole-person enjoyment and implicitly fostering their L2 knowledge. This complex pedagogic task is likely to be achieved with reliance on the multi-sensory approach which is recommended by the European Co-operation Programs as an alternative L2 teaching trend encompassing universal, proactive qualities and educational diversity. Consequently, the following paper highlights the multisensoiy approach as the driving force of the lexically oriented syllabus designed by the author for young children learning English as a foreign language. The said syllabus design is presented through the empirical filter of knowledge claims and value judgements about its efficiency.

Źródło:

Glottodidactica. An International Journal of Applied Linguistics; 2001, 29, 1; 149-159
0072-4769

Pojawia się w:

Glottodidactica. An International Journal of Applied Linguistics

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 37.

Tytuł:

Ordered Pure Multi-Pushdown Automata

Autorzy:

Meduna, A.
Soukup, O.
Zemek, P.

Powiązania:

https://bibliotekanauki.pl/articles/375792.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

pure multi-pushdown automata
total orders
accepting power

Opis:

In the presented paper we discuss pure versions of pushdown automata that have no extra non-input symbols. More specifically, we study pure multi-pushdown automata, which have several pushdown lists. We restrict these automata by the total orders defined over their pushdowns or alphabets and determine the accepting power of the automata restricted in this way. Moreover, we explain the significance of the achieved results and relate them to some other results in the automata theory.

Źródło:

Theoretical and Applied Informatics; 2015, 27, 1; 25-47
1896-5334

Pojawia się w:

Theoretical and Applied Informatics

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 38.

Tytuł:

Optimising rig design for sailing yachts with Evolutionary Multi-objective Algorithm

Autorzy:

Pawłusik, Mikołaj
Szłapczyński, Rafał
Karczewski, Artur

Powiązania:

https://bibliotekanauki.pl/articles/1573832.pdf

Data publikacji:

2020

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

sailing yacht rig optimization
Bermuda sloop
Multi-Objective Evolutionary Algorithms (MOEA)
Multi Criteria Decision Making (MCDM)

Opis:

The paper presents a framework for optimising a sailing yacht rig using Multi-objective Evolutionary Algorithms and for filtering obtained solutions by means of a Multi-criteria Decision Making method. A Bermuda sloop with discontinuous rig is taken under consideration as a model rig configuration. It has been decomposed into its elements and described by a set of control parameters to form a responsive model which can be used for optimisation purposes. Considering the contradictory nature of real optimisation objectives, a multi-objective approach has been chosen to address this issue. Once the optimisation process is over, a Multi-criteria Decision Making method based on a w-dominance relation is applied for filtering out the most interesting solutions from the obtained Pareto set. The proposed method has been implemented, and selected results are provided and discussed.

Źródło:

Polish Maritime Research; 2020, 4; 36-49
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 39.

Tytuł:

Problems of propulsion arrangement choice of multi-mode ship

Autorzy:

Herdzik, J.

Powiązania:

https://bibliotekanauki.pl/articles/246914.pdf

Data publikacji:

2010

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

ships propulsion
propulsion arrangement
multi-mode ships
propulsion choice

Opis:

The propulsion system of multi-mode ships cause many problems of proper the choise of propulsion system elements and theirs arrangement in the design process. This system has to fulfil at least two inverse demands. It ought to make possible efficient ship shift (transit mode) from the port to the off shore work place and return to base, to ensure a ship survive at sea in the worst sea condition possible on that sea area and to fulfil conditions of dynamic positioning accuracy (stationkeeping mode) at specified bad state of the sea - not to stop the ship work for long time. The dynamic positioning systems require multi-element ship propulsion application. The fulfilment, all required possibilities and accuracy of ship positioning by chosen propulsion system specified in the project data, is the most important project problem to obtain the minimum investment costs. The redimensioning of propulsion system, increasing the number of thrusters and theirs possibilities gives the benefits in dynamic positioning accuracy, but increases the investment costs. An expensive project may not be realized because of price. The aim of designer is the choice optimum solution of propulsion system, which is fulfils all expectations of ship owner and crew, and performs all project assumptions.

Źródło:

Journal of KONES; 2010, 17, 2; 129-135
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 40.

Tytuł:

Locally admissible multi-valued maps

Autorzy:

Ślosarski, Mirosław

Powiązania:

https://bibliotekanauki.pl/articles/729342.pdf

Data publikacji:

2011

Wydawca:

Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii

Tematy:

Lefschetz number
fixed point
absolute neighborhood multi-retracts
admissible maps
locally admissible maps

Opis:

In this paper we generalize the class of admissible mappings as due by L. Górniewicz in 1976. Namely we define the notion of locally admissible mappings. Some properties and applications to the fixed point problem are presented.

Źródło:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2011, 31, 1; 115-132
1509-9407

Pojawia się w:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 41.

Tytuł:

Reliability and risk analysis of multi-state systems with degrading components

Autorzy:

Kołowrocki, K.

Powiązania:

https://bibliotekanauki.pl/articles/2069716.pdf

Data publikacji:

2008

Wydawca:

Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności

Tematy:

multi-state systems
system reliability
system risk

Opis:

Applications of multi-state approach to the reliability evaluation of systems composed of independent components are considered. The main emphasis is on multi-state systems with degrading components because of the importance of such an approach in safety analysis, assessment and prediction, and analysing the effectiveness of operation processes of real technical systems. The results concerned with multi-state series systems are applied to the reliability evaluation and risk function determination of a homogeneous bus transportation system. Results on homogeneous multi-state “m out of n” systems are applied to durability evaluation of a steel rope. A nonhomogeneous series-parallel pipeline system composed of several lines of multi-state pipe segments is estimated as well. Moreover, the reliability evaluation of the model homogeneous multi-state parallel-series electrical energy distribution system is performed.

Źródło:

Journal of Polish Safety and Reliability Association; 2008, 2; 205--216
2084-5316

Pojawia się w:

Journal of Polish Safety and Reliability Association

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 42.

Tytuł:

Multi-method and multi-criteria decision analysis of objects in a computerized decision support system

Autorzy:

Becker, J.
Becker, A.
Budziński, R.

Powiązania:

https://bibliotekanauki.pl/articles/406607.pdf

Data publikacji:

2017

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

multi-criteria decision analysis
ranking
grouping
allocation of resources
computerized decision support system
DSS

Opis:

A multimethod approach to the multicriteria analysis and assessment of objects (rankings, grouping, econometric assessments) have been presented. This issue is a field of research and engineering associated with the construction and application of a computerized decision support system (DSS 2.0). In terms of the proposed approach, the functionality of the developed prototype has been illustrated based on a practical example of the assessment of employees and the analysis of remuneration. The Electre TRI method of grouping derived from a relational model complements ranking methods well (e.g., AHP) based on the functional model. Grouping reveals cases, where all or the vast majority of objects in a ranking were clustered within one class (e.g., in the best or the worst one).

Źródło:

Operations Research and Decisions; 2017, 27, 3; 21-33
2081-8858
2391-6060

Pojawia się w:

Operations Research and Decisions

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 43.

Tytuł:

Application possibilities of electric driven propulsion of multi-mode ships

Autorzy:

Herdzik, J.

Powiązania:

https://bibliotekanauki.pl/articles/246217.pdf

Data publikacji:

2010

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

ships propulsion
electric propulsion
multi-mode ships
propulsion systems

Opis:

The ship propulsion solution based on unconventional thrusters driven by electric motors is most often applied for the multi-mode ships. These ships ought to have dynamic positioning system. It forces an application of a few thrusters (most often four, seldom more up to eight). Records from a number of multi-mode ships show amean load of less than 40% of maximum load on the propulsion system. In other side the demand for electric energy of ship industrial part is large, more often than for the propulsion part. In that case the diesel-electric propulsion system application may be economical, because the electric energy generation for all ship's purposes makes possible the main engines work on the optimum loads on lowest specific fuel consumption and allows them a long-term work on heavy fuels. For multi-mode ships like cable ships, suppliers, drilling vessels are convenient an application of unconventional thrusters with direct electric propulsion as well, especially for dynamic positioning systems. The efficiency of the thrusters is a predominant factor for the successful and economical operation. Forecasted development and rise of quantity of diesel-electric propulsion (it means with electrical transmission) would cause increased interest of unconventional thrusters. Ultimately they may revolutionize ship propulsion systems.

Źródło:

Journal of KONES; 2010, 17, 1; 163-168
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 44.

Tytuł:

Application possibilities of electric driven propulsion of multi-mode ships

Autorzy:

Herdzik, J.

Powiązania:

https://bibliotekanauki.pl/articles/247580.pdf

Data publikacji:

2010

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

ships propulsion
electric propulsion
multi-mode ships
propulsion systems

Opis:

The ship propulsion solution based on unconventional thrusters driven by electric motor s is most often applied for the multi-mode ships. These ships ought to have dynamic positioning system. It forces an application of a few thrusters (most often four, seldom more up to eight). Records from a number of multi-mode ships show a mean load of less than 40% of maximum load on the propulsion system. In other side the demand for electric energy of ship industrial part is large, more often than for the propulsion part. In that case the diesel-electric propulsion system application may be economical, because the electric energy generation for all ship 's purposes makes possible the main engines work on the optimum loads on lowest specific fuel consumption and allows them a long-term work on heavy fuels. For multi-mode ships like cable ships, suppliers, drilling vessels are convenient an application of unconventional thrusters with direct electric propulsion as well, especially for dynamic positioning systems. The efficiency of the thrusters is a predominant factor for the successful and economical operation. Forecasted development and rise of quantity of diesel-electric propulsion (it means with electrical transmission) would cause increased interest of unconventional thrusters. Ultimately they may revolutionize ship propulsion systems.

Źródło:

Journal of KONES; 2010, 17, 4; 177-183
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 45.

Tytuł:

Multi-criteria optimisation of multi-stage positional game of vessels

Autorzy:

Lisowski, Józef

Powiązania:

https://bibliotekanauki.pl/articles/259750.pdf

Data publikacji:

2020

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

maritime transport
optimisation
game theory
ship control
computer simulation

Opis:

The paper presents a mathematical model of a positional game of the safe control of a vessel in collision situations at sea, containing a description of control, state variables and state constraints as well as sets of acceptable ship strategies, as a multi-criteria optimisation task. The three possible tasks of multi-criteria optimisation were formulated in the form of non-cooperative and cooperative multi-stage positional games as well as optimal non-game controls. The multicriteria control algorithms corresponding to these tasks were subjected to computer simulation in Matlab/Simulink software based on the example of the real navigational situation of the passing of one’s own vessel with eighteen objects encountered in the North Sea.

Źródło:

Polish Maritime Research; 2020, 1; 46-52
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 46.

Tytuł:

Multi - period portfolio optimization of power generation assets

Autorzy:

Glensk, B.
Madlener, R.

Powiązania:

https://bibliotekanauki.pl/articles/406540.pdf

Data publikacji:

2013

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

multi-period rebalancing model
portfolios of power generation assets

Opis:

The liberalization and deregulation of the energy industry in the past decades have been significantly affected by changes in the strategies of energy firms. The traditionally used approach of cost minimization was no longer sufficient, risk and market behavior could no longer be ignored and the need for more appropriate optimization methods for uncertain environments was increased. Meanvariance portfolio (MVP) theory is one of the more advanced financial methods that has been successfully applied to the energy sector. Unfortunately, this static approach is inadequate for studying multi-stage investment decision problems. The methodology proposed in this paper considering power generation assets is based on the model introduced by Mulvey, who suggests a reallocation approach using the analysis of various scenarios. The adoption of this methodology to power generation assets allows us to capture the impact of variations in the economic and technical parameters considered. The results of our study show that the application of a model for selection of multi-period portfolio can indeed improve the decision making process. Especially for the case of adding new investments to the portfolio mix, this rebalancing model captures new entries very well.

Źródło:

Operations Research and Decisions; 2013, 23, 4; 21-38
2081-8858
2391-6060

Pojawia się w:

Operations Research and Decisions

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 47.

Tytuł:

Multi-valued operators and fixed point theorems in Banach algebras

Autorzy:

Dhage, Bapur

Powiązania:

https://bibliotekanauki.pl/articles/729606.pdf

Data publikacji:

2004

Wydawca:

Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii

Tematy:

multi-valued operator
fixed point theorem and integral inclusion

Opis:

In this paper, two multi-valued versions of the well-known hybrid fixed point theorem of Dhage [6] in Banach algebras are proved. As an application, an existence theorem for a certain differential inclusion in Banach algebras is also proved under the mixed Lipschitz and compactness type conditions.

Źródło:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2004, 24, 1; 97-122
1509-9407

Pojawia się w:

Discussiones Mathematicae, Differential Inclusions, Control and Optimization

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 48.

Tytuł:

General specification of multi-robot control system structures

Autorzy:

Zieliński, C.
Winiarski, T.

Powiązania:

https://bibliotekanauki.pl/articles/199952.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

robot control systems
specification of controllers
multi-robot systems

Opis:

The paper deals with structuring robot control systems. The control system is decomposed into distinct agents. An agent, in general, is responsible for control of its effector, perception of the environment for the purpose of its effector control, and inter-agent communication. The behaviour of the agent is governed by its set of transition functions. The control system consists of two tiers – the upper tier is defined by the flow of information between the agents and the lower tier is defined by formal specification of each agent’s behaviour (influence on the environment, gathering sensor readings, production and consumption of the information for/from the other agents). The paper presents one of the examples of utilization of this approach. The example concerns the multi-robot drawing copying system.

Źródło:

Bulletin of the Polish Academy of Sciences. Technical Sciences; 2010, 58, 1; 15-28
0239-7528

Pojawia się w:

Bulletin of the Polish Academy of Sciences. Technical Sciences

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 49.

Tytuł:

Modelling of bolts in multi-bolted connections using Midas NFX

Autorzy:

Grzejda, R.

Powiązania:

https://bibliotekanauki.pl/articles/298303.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie

Tematy:

multi-bolted connection
FE modelling
stiffness analysis
load analysis

Opis:

In the paper a fragment of research on development of modelling methods of asymmetrical multi-bolted flange connections is presented. The effect of the bolt modelling method in a single bolted joint on both the stiffness characteristics of elements joined in the multi-bolted flange connection and bold forces have been examined. An analysis of the multi-bolted flange connection is carried out for selected models created using the finite element method (FEM). Guidelines for the selection of the bolt modelling method in the case of both the stiffness analysis and the load analysis of multi-bolted flange connections have been pointed out.

Źródło:

Technical Sciences / University of Warmia and Mazury in Olsztyn; 2015, 18(1); 61-68
1505-4675
2083-4527

Pojawia się w:

Technical Sciences / University of Warmia and Mazury in Olsztyn

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 50.

Tytuł:

Evolutionary multi-agent systems in non-stationary environments

Autorzy:

Kisiel-Dorohinicki, M.

Powiązania:

https://bibliotekanauki.pl/articles/305810.pdf

Data publikacji:

2013

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

multi-agent systems
evolutionary computation
dynamic optimization
non-stationary environment

Opis:

In this article, the performance of an evolutionary multi-agent system in dynamic optimization is evaluated in comparison to classical evolutionary algorithms. The starting point is a general introduction describing the background, structure and behavior of EMAS against classical evolutionary techniques. Then, the properties of energy-based selection are investigated to show how they may influence the diversity of the population in EMAS. The considerations are illustrated by experimental results based on the dynamic version of the well-known, high-dimensional Rastrigin function benchmark.

Źródło:

Computer Science; 2013, 14 (4); 563-575
1508-2806
2300-7036

Pojawia się w:

Computer Science

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 51.

Tytuł:

The Intention to Cart Abandonment in the Context of Multi-Channel Pricing

Autorzy:

Lipowska, Ilona

Powiązania:

https://bibliotekanauki.pl/articles/16729005.pdf

Data publikacji:

2023

Wydawca:

Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej

Tematy:

cart abandonment
pricing
multichanneling
multi-channel pricing

Opis:

Theoretical background: Shopping cart abandonment is defined as a situation when the customer chooses products but does not complete the financial transaction. The vast majority of research articles on purchase abandonment concerns the online or mobile environment. The presented research model refers to the customer intention to resign from purchasing both in physical store and via mobile app caused by a multi-channel pricing strategy. By analogy to many definitions of online cart abandonment, the author defines cart abandonment in a multichannel environment as a decision about postponing purchase at all, both in a physical store and in a purchase mobile app. One of the possibilities of consumer behaviour as a reaction to the multi-channel pricing may be purchase abandonment. The impact of price differentiation across channels on purchase abandonment still deserves research attention due to the lack of the unequivocal confirmation. Purpose of the article: Setting prices in a multichannel environment creates a vital challenge for multi-channel retailers. This article attempts to explain one of the undesirable consequences of the channel-based price differentiation, which is the purchase abandonment. The purpose of this paper is to identify factors influencing the customer intention to abandon the purchase under channel-based price differentiation conditions (physical store and mobile purchase app). Research methods: This study is a quantitative one employing a scenario-based approach to obtain responses from 500 participants. This research used the structural equation modelling to test its hypotheses. Main findings: Findings reveal positive impact of perceived limited self-determination and perceived price unfairness on intention to cart abandonment, whereas consumer trust in a mobile app can reduce the intention to resign from purchase. Furthermore, the author finds the indirect impact of the mobile app familiarity as well as the retailer brand awareness. Research results can help managers to reduce the likelihood of losing customers in the multi-channel pricing environment.

Źródło:

Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia; 2023, 57, 1; 103-121
0459-9586
2449-8513

Pojawia się w:

Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 52.

Tytuł:

Multi-element sources focusing energy

Autorzy:

Grelowska, G.

Powiązania:

https://bibliotekanauki.pl/articles/332059.pdf

Data publikacji:

2004

Wydawca:

Polskie Towarzystwo Akustyczne

Opis:

In underwater imaging the beam-forming technique plays one of the most important roles. Focusing acoustic energy is one of the methods used to improve lateral resolution. The paper contains the results of the experimental research in a piezoelectric four- and six-element annular arrays of a resonant frequency equal to 1.5 MHz. The third examined source is built using one PZT bowl element. The sources are constructed with a layer adjusting the PZT transducers to water. In that way we obtained the sources of broadened band radiating in the frequency range 1.2 MHz - 1.8 MHz. The space distribution of the pressure field has been determined for various frequencies and various intensity of the phenomenon of the non-linear distortion of the wave. The experimental data have been compared with the results of the numerical research carried out with the use of a model constructed on the basis of the KZK equation.

Źródło:

Hydroacoustics; 2004, 7; 63-68
1642-1817

Pojawia się w:

Hydroacoustics

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 53.

Tytuł:

Multi-beam side-scan sonar

Autorzy:

Elminowicz, A.

Powiązania:

https://bibliotekanauki.pl/articles/332735.pdf

Data publikacji:

2001

Wydawca:

Polskie Towarzystwo Akustyczne

Opis:

Conventional single beam side-scan sonars with beams at about 1o are not well suited for the detection and identification of very small objects TS < -25 dB - e.g. minelike objects. Sonars of very high angular resolution at 0.1o - 0.2o operate in the nearfield and the speed of the sonar's transducer towing has to be reduced significantly. The paper presents a design approach to a multi-beam side-scan sonar where the above mentioned drawbacks have been removed. The sonar has several narrow parallel (not conical) beams simultaneously formed using the method of beam shaping in the nearfield. Two methods of beam shaping in the nearfield are presented. Thanks to them sonars of various quality and cost can be designed. Selected beam patterns for the two methods of beam forming in the nearfield are presented and compared.

Źródło:

Hydroacoustics; 2001, 4; 57-60
1642-1817

Pojawia się w:

Hydroacoustics

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 54.

Tytuł:

Multi-agent utility theory for ethical conflict resolution

Autorzy:

Tamura, H.

Powiązania:

https://bibliotekanauki.pl/articles/309241.pdf

Data publikacji:

2002

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

utility theory
conflict resolution
multi-agent decision making
ethical consideration
convex dependence

Opis:

In this paper we try to construct a two-attribute group disutility function for two conflicting decision makers, taking into account the property of utility independencev and/or convex dependence between them. Two variables in the group utility function are disutility levels of two conflicting decision makers. The disutility level of each decision maker is modeled using multiple attributes, that is disutility function of each decision maker is formulated as a multi-attribute disutility function. By using a group disutility function for two conflicting agents, we can model the mutual concessions of the two conflicting agents taking into account ethical preference of each decision maker, and hence we can expect fairer multiple agents decision making for realizing better social welfare.

Źródło:

Journal of Telecommunications and Information Technology; 2002, 3; 37-39
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 55.

Tytuł:

The structure and components of agility – a multi-perspective view

Autorzy:

Wendler, Roy

Powiązania:

https://bibliotekanauki.pl/articles/431875.pdf

Data publikacji:

2013

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

agility
agility frameworks
agility concepts
multi-perspective view of agility

Opis:

Agility is a term that is widely used. However, a common understanding of what agility means and what it consists of is missing. Many frameworks have been developed for how to approach agility, but they are very heterogeneous regarding content and structure. This paper approaches the issue by conducting a systematic comparison of 28 available agility frameworks out of the domains of agile manufacturing, agile software development, agile organization, and agile workforce. Altogether, 33 concepts related to agility were identified. The results of the comparison show that, even within the specifically examined domains, a lack of consensus is obvious. In addition, the utilized concepts are very ambiguous and overlapping. As such, the interdependencies between the identified concepts were analyzed in detail. This revealed five recurring “clusters”, each of which combines several concepts with similar content, but despite the amount of available frameworks, none of them reflects these clusters directly. Hence, the study shows that factors beyond the construct of agility are not yet fully uncovered.

Źródło:

Informatyka Ekonomiczna; 2013, 2(28); 148-169
1507-3858

Pojawia się w:

Informatyka Ekonomiczna

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 56.

Tytuł:

Multi agent deep learning with cooperative communication

Autorzy:

Simões, David
Lau, Nuno
Reis, Luís Paulo

Powiązania:

https://bibliotekanauki.pl/articles/1837537.pdf

Data publikacji:

2020

Wydawca:

Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych

Tematy:

multi-agent systems
deep reinforcement learning
centralized learning

Opis:

We consider the problem of multi agents cooperating in a partially-observable environment. Agents must learn to coordinate and share relevant information to solve the tasks successfully. This article describes Asynchronous Advantage Actor-Critic with Communication (A3C2), an end-to-end differentiable approach where agents learn policies and communication protocols simultaneously. A3C2 uses a centralized learning, distributed execution paradigm, supports independent agents, dynamic team sizes, partiallyobservable environments, and noisy communications. We compare and show that A3C2 outperforms other state-of-the-art proposals in multiple environments.

Źródło:

Journal of Artificial Intelligence and Soft Computing Research; 2020, 10, 3; 189-207
2083-2567
2449-6499

Pojawia się w:

Journal of Artificial Intelligence and Soft Computing Research

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 57.

Tytuł:

Resistance of idle propellers in marine multi-propeller propulsion systems

Autorzy:

Charchalis, A.

Powiązania:

https://bibliotekanauki.pl/articles/247530.pdf

Data publikacji:

2010

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

transport
high speed vessels
marine propellers
multi-propeller propulsion systems

Opis:

The configuration of a marine propulsion system is selected with regard to the maximum power resulting from its maximum design speed and displacement. The propulsion systems of high speed vessels use three or even four propellers, and each propulsion unit may be multi-engine. High speed vessels are designedfor maximum speeds, but their factual exploitation speed parameters are usually considerably lower - partial speed. In such cases particular propulsion propellers and engines need to be shut down. The idle propellers are dragged by the hull and they work in the so-called turbine work mode; they transfer torque to the shaft and generale negative thrust, i.e. additional resistance. Additional resistance contributes to reducing estimated speed of a vessel and increasing fuel consumption. What is more, torque generated on a propeller is transferred to the shaft and when friction resistance torque in shaft stuffing-boxes and bearings, transmission and, possibly, the propulsion engine is exceeded, mobile components rotate as a result, reaching considerable rotational speed values. torque and thrust on a propeller in this work mode may be estimated on the grounds of universal hydrodynamic characteristics of propellers. Universal hydrodynamic characteristics of propellers are used as reversion characteristics in evaluating the steering properties ofa vessel, and may be useful in evaluating resistance of free wheeling and locked propellers in marine multi-shaft propulsion systems. This paper presents charts of universal hydrodynamic characteristics of propellers for the full range of their rotational speed, the methodology and an example of calculating resistance of free wheeling and locked propellers for the given marine propulsion system.

Źródło:

Journal of KONES; 2010, 17, 4; 97-102
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 58.

Tytuł:

Multi - material design optimization of a bus body structure

Autorzy:

Korta, J.
Uhl, T.

Powiązania:

https://bibliotekanauki.pl/articles/247771.pdf

Data publikacji:

2013

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

weight reduction
bus structure
structural optimization
multi-material design

Opis:

In the recent years the safety and eco-friendliness have gained much of attention of the automotive stakeholders. These two characteristics are especially important in the case of mass transportation vehicles, such as buses or coaches, which are in continues use for long periods of time, covering significant distances. In such situations, the economical aspects play major role for the transportation companies which try to minimize operational costs of their fleet, by choosing vehicles with reduced fuel consumption. In order to obtain improvements in all the mentioned areas and hence to strengthen their position on the market, bus manufacturers have recently turned their attention to multimaterial design strategies. Structures built in that manner consist not only of regular steel parts, but contain also a mix of components made from various lightweight materials like aluminum alloys or composites, which allow for significant reduction in vehicle curb weight. However, due to the differences in mechanical characteristics which are especially evident in the case of laminates, the material substitution is not a straightforward task. In order to find the material distribution pattern that meets all the requirements, a great number of prototypic numerical models must be prepared and tested. To ease the search for the final solution, optimization techniques can be applied into the design process, allowing for automatic design modifications and assessment of the obtained results. The paper presents an attempt of enhancing the operational characteristics of a bus body structure with simultaneous reduction in the structural weight. In order to find the optimal component configuration, a multimaterial optimization was employed and supplemented by sensitivity and robustness analyses. Such a technique helps to discriminate the over-optimized solutions that are often pointed out as the most desirable by the optimization algorithms which neglect the uncertainties of the analysed system.

Źródło:

Journal of KONES; 2013, 20, 1; 139-146
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 59.

Tytuł:

Multi-swarm that learns

Autorzy:

Trojanowski, K.

Powiązania:

https://bibliotekanauki.pl/articles/969816.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

particle swarm optimization (PSO)
multi-swarm
dynamic optimization
memory
clusters
clustering evolving data streams
quantum particles

Opis:

This paper studies particle swarm optimization approach enriched by two versions of an extension aimed at gathering information during the optimization process. Application of these extensions, called memory mechanisms, increases computational cost, but it is spent to a benefit by incorporating the knowledge about the problem into the algorithm and this way improving its search abilities. The first mechanism is based on the idea of storing explicit solutions while the second one applies one-pass clustering algorithm to build clusters containing search experiences. The main disadvantage of the former mechanism is lack of good rules for identification of outdated solutions among the remembered ones and as a consequence unlimited growth of the memory structures as the optimization process goes. The latter mechanism uses other form of knowledge representation and thus allows us to control the amount of allocated resources more efficiently than the former one. Both mechanisms have been experimentally verified and their advantages and disadvantages in application for different types of optimized environments are discussed.

Źródło:

Control and Cybernetics; 2010, 39, 2; 359-375
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 60.

Tytuł:

Multi-valued codensing random operators and functional random integral inclusions

Autorzy:

Dhage, B. C.

Powiązania:

https://bibliotekanauki.pl/articles/255621.pdf

Data publikacji:

2011

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

monotone multi-valued random operator
random differential inclusion
existence

Opis:

In this paper, some random fixed point theorems for continuous and condensing multi-valued random operators are proved and they are further applied to the random integral inclusions for proving the existence of the solutions via the priori bound method.

Źródło:

Opuscula Mathematica; 2011, 31, 1; 27-48
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 61.

Tytuł:

Numerical application of the SPEA algorithm to reliability multi-objective optimization

Autorzy:

Guze, S.

Powiązania:

https://bibliotekanauki.pl/articles/2069179.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności

Tematy:

multi-objective
optimization
reliability
0-1 knapsack problem
SPEA

Opis:

The main aim of the paper is the computer-aided multi-objective reliability optimization using the SPEA algorithm. This algorithm and the binary knapsack problem are described. Furthermore, the computer program that solves the knapsack problem with accordance to SPEA algorithm is introduced. Example of the possible application of this program to the multi-objective reliability optimization of exemplary parallel-series system is shown.

Źródło:

Journal of Polish Safety and Reliability Association; 2015, 6, 1; 101--114
2084-5316

Pojawia się w:

Journal of Polish Safety and Reliability Association

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 62.

Tytuł:

Translation Challenges: Qualitative Interviewing in a Multi-Lingual Field

Autorzy:

Inhetveen, Katharina

Powiązania:

https://bibliotekanauki.pl/articles/2108279.pdf

Data publikacji:

2012-08-30

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

Qualitative Interviews
Language
Translation
Ethnography
Multi-Lingual Fields
Interpreter
Refugee Camps

Opis:

This paper suggests how translation processes can be integrated in qualitative interviews in multi-lingual research fields. While theoretical and methodological problems of language and translation have been thoroughly reflected upon from different perspectives in qualitative research, the literature provides little guidance for the practical gathering and handling of multi-lingual material. As a contribution to filling this gap, the paper suggests a systematic, comparative combination of oral and written translations of interviews, which would serve both a diagnostic and a heuristic function. Based on an ethnographic study in Zambian refugee camps and conceptual distinctions between schemes of translation, I identify, in oral translations, five forms of translator’s decision to depart from the literal wording in favor of a pragmatic translation intended to aid continuation of the conversation. As an important element of the suggested procedure, the comparison of the translation modes is systematically discussed with the translating research assistant, leading not only to reflection on further translation practices, but, most importantly, to an awareness of important substantial aspects of the material. This heuristic function of the comparative combination of translation modes thus leads to an enhancement of the research process.

Źródło:

Qualitative Sociology Review; 2012, 8, 2; 28-45
1733-8077

Pojawia się w:

Qualitative Sociology Review

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 63.

Tytuł:

Coupled energy measurements in multi-core photonic-crystal fibers

Autorzy:

Klimek, J.

Powiązania:

https://bibliotekanauki.pl/articles/221407.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

photonic crystal fibers
multi-core fibers
optical fiber measurements
photonic sensors

Opis:

This paper outlines a measurement method of properties of microstructured optical fibers that are useful in sensing applications. Experimental studies of produced photonic-crystal fibers allow for a better understanding of the principles of energy coupling in photonic-crystal fibers. For that purpose, fibers with different filling factors and lattice constants were produced. The measurements demonstrated the influence of the fiber geometry on the coupling level of light between the cores. For a distance between the cores of 15 μm, a very low level (below 2%) of energy coupling was obtained. For a distance of 13 μm, the level of energy transfer toneighboring cores on the order of 2-4% was achieved for a filling factor of 0.29. The elimination of the energycoupling penomenon between the cores was achieved by duplicating the filling factor of the fiber. The coupling level was as high as 22% in the case of fibers with a distance between the cores of 8.5 μm. Our results can be used for microstructured-fiber sensing applications and for transmission-channel switching in liquid-crystal multi-core photonic fibers.

Źródło:

Metrology and Measurement Systems; 2013, 20, 4; 689-696
0860-8229

Pojawia się w:

Metrology and Measurement Systems

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 64.

Tytuł:

Multi-objective optimization problem in the OptD-multi method

Autorzy:

Błaszczak-Bąk, Wioleta
Sobieraj-Żłobińska, Anna
Kowalik, Michał

Powiązania:

https://bibliotekanauki.pl/articles/221473.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

reduction
OptD method
optimization
LiDAR

Opis:

New measurement technologies, e.g. Light Detection And Ranging (LiDAR), generate very large datasets. In many cases, it is reasonable to reduce the number of measuring points, but in such a way that the datasets after reduction satisfy specific optimization criteria. For this purpose the Optimum Dataset (OptD) method proposed in [1] and [2] can be applied. The OptD method with the use of several optimization criteria is called OptD-multi and it gives several acceptable solutions. The paper presents methods of selecting one best solution based on the assumptions of two selected numerical optimization methods: the weighted sum method and the ε-constraint method. The research was carried out on two measurement datasets from Airborne Laser Scanning (ALS) and Mobile Laser Scanning (MLS). The analysis have shown that it is possible to use numerical optimization methods (often used in construction) to obtain the LiDAR data. Both methods gave different results, they are determined by initially adopted assumptions and – in relation to early made findings, these results can be used instead of the original dataset for various studies.

Źródło:

Metrology and Measurement Systems; 2019, 26, 2; 253-266
0860-8229

Pojawia się w:

Metrology and Measurement Systems

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 65.

Tytuł:

Evolutionary multi-agent computing in inverse problems

Autorzy:

Wróbel, K.
Torba, P.
Paszyński, M
Byrski, A.

Powiązania:

https://bibliotekanauki.pl/articles/305816.pdf

Data publikacji:

2013

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

multi-agent systems
evolutionary computation
inverse problems

Opis:

This paper tackles the application of evolutionary multi-agent computing to solve inverse problems. High costs of fitness function call become a major difficulty when approaching these problems with population-based heuristics. However, evolutionary agent-based systems (EMAS) turn out to reduce the fitness function calls, which makes them a possible weapon of choice against them. This paper recalls the basics of EMAS and describes the considered problem (Step and Flash Imprint Lithography), and later, shows convincing results that EMAS is more effective than a classical evolutionary algorithm.

Źródło:

Computer Science; 2013, 14 (3); 367-383
1508-2806
2300-7036

Pojawia się w:

Computer Science

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 66.

Tytuł:

Fully coupled multi-physics modeling of the multi-type magnetic particles dynamic behavior in low intensity magnetic separator

Autorzy:

Wang, Feiwang
Zhao, Hongming
Dai, Huixin
Du, Wuxing

Powiązania:

https://bibliotekanauki.pl/articles/109730.pdf

Data publikacji:

2019

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

multi-physics model
low-intensity magnetic separator
magnetic particles
dynamic behaviour

Opis:

Studying the dynamic behavior of magnetic particle suspensions in the low intensity magnetic separator has important implications for various mineral beneficiation processes. A new approach for fully coupled multi-physics modeling of the dynamic behavior of multi-type magnetic particles (MTMPs) is developed in the study. In this model, the particle tracing module is employed to identify and determine individual particle trajectories in the fluid and magnetic field, which are modelled through the COMSOL Multiphysics. The results show that the different arrangements of the permanent magnet assembly and the volume percentage of interlocked particles affect the dynamic behavior of MTMPs and the efficiency of the separation. The model is compared with experiments and the particle capture theory and the correctness of the solution obtained from COMSOL is demonstrated. The model gives new possibilities to control, optimise, and develop the process of LIMS.

Źródło:

Physicochemical Problems of Mineral Processing; 2019, 55, 1; 163-172
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 67.

Tytuł:

Modelowanie i symulacja funkcjonowania regulacji na stanowisku Multi Tank
Modelling and simulation of control functioning at the Multi Tank station

Autorzy:

Juszka, H.
Tomasik, M.
Lis, S.

Powiązania:

https://bibliotekanauki.pl/articles/287141.pdf

Data publikacji:

2008

Wydawca:

Polskie Towarzystwo Inżynierii Rolniczej

Tematy:

algorytm regulacji
Multi Tank
sterowanie mikrokomputerowe
Xilinx
control algorithms
microcomputer control
XilinxŽ

Opis:

Opisano problematykę sterowania procesami technologicznymi za pomocą mikroprocesorowych systemów sterowania, instalowanych w komputerach. Rozwiązanie takie umożliwia przeprogramowanie układów automatyki i zmianę struktury algorytmu sterowania, często bez konieczności przebudowy/wymiany urządzeń sterujących. Dla wybranych algorytmów regulacji analizowano funkcjonalność systemów sterowania mikroprocesorowego, bazujących na układach FPGA z procesorem XilinxŽ. Wyniki badań doświadczalnych przedstawiono na wykresach.
The paper describes the issues of manufacturing process control using microprocessor control systems, which are installed in computers. This solution allows to reprogram automatic systems and to modify control algorithm structure, often without the need to rebuild/replace control equipment. The research involved analysis of functionality of microprocessor control systems based on FPGA systems containing XilinxŽ processor for selected control algorithms. Experimental test results are shown in diagrams.

Źródło:

Inżynieria Rolnicza; 2008, R. 12, nr 10(108), 10(108); 97-104
1429-7264

Pojawia się w:

Inżynieria Rolnicza

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 68.

Tytuł:

The scalarization approach for multi-objective optimization of network resource allocation in distributed systems

Autorzy:

Wesołowski, Z.

Powiązania:

https://bibliotekanauki.pl/articles/92817.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach

Tematy:

distributed system
resource allocation
multi-objective optimization

Opis:

The paper presents a multi-objective optimization framework to the network resource allocation problem, where the aim is to maximize the bitrates of data generated by all agents executed in a distributed system environment. In the proposed approach, the utility functions of agents may have different forms, which allows a more realistic modeling of phenomena occurring in computer networks. A scalarizing approach has been applied to solve the optimization problem.

Źródło:

Studia Informatica : systems and information technology; 2016, 1-2(20); 39-52
1731-2264

Pojawia się w:

Studia Informatica : systems and information technology

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 69.

Tytuł:

Application of multi-criteria approach for sustainability assessment of manufacturing processes

Autorzy:

Kluczek, A.

Powiązania:

https://bibliotekanauki.pl/articles/407367.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

multi-criteria decision analysis
analytical hierarchy process
sustainability assessment
manufacturing

Opis:

The paper is to present a multi-criteria approach for sustainability assessment of manufacturing processes, which can be applied to carry out the sustainability assessment of manufacturing processes requiring less detailed data, time, and expert knowledge, but still providing a company-level analysis. The analytical hierarchy process method is used to determine ranking of simple and relevant activity areas for manufacturing processes in terms of sustainability objectives. Analytical technique is also employed to assess the degree of sustainability in manufacturing due to limited information which appear to be a characteristic of the case study presented. One goal of sustainability characterization methodology is to improve the manufacturing sustainability performance. Similar to the baseline scenario, sustainability reevaluation for sustainability improvement is also applied and discuses performance profile at the process level. This approach seems particularly useful when comparing different processes. It makes applicable for various industries and might be a challenge to derive priorities for systematic improvement. The applicability and usability of the proposed assessment method was verified by the case study in company producing heating devices.

Źródło:

Management and Production Engineering Review; 2016, 7, 3; 62-78
2080-8208
2082-1344

Pojawia się w:

Management and Production Engineering Review

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 70.

Tytuł:

The Multi-sensory landscape as an inspiration in the creation of a tourism product

Autorzy:

Rogowski, Mateusz

Powiązania:

https://bibliotekanauki.pl/articles/627571.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

multi-sensory landscape
landscape perception
tourism product

Opis:

Stimulated by growing competition in the tourism market, the offer available needs to be continuously enhanced, and as a result those doing the development reach out for increasingly sophisticated measures. An important element in this context is the popular multi-sensory perception of landscape which guarantees that the tourism product created will be interesting and unique. This helps to provide more interesting experiences and achieve greater involvement, which undoubtedly allows greater satisfaction to be drawn from participation in tourism activities. The purpose of this article is to demonstrate tha the multi-sensory approach to landscape may be applied in the creation process of the tourism product, and this proposition will be supported with examples corresponding to particular landscape stimuli. The author intends to show that contemporary tourism offers benefit from the phenomenon of the multi-sensory landscape more and more frequently.

Źródło:

Turyzm; 2016, 26, 2; 23-32
0867-5856
2080-6922

Pojawia się w:

Turyzm

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 71.

Tytuł:

Nieścisłości stałych podstawowych i propozycja standaryzacji dualnego sposobu publikowania wyników pomiaru multi-mezurandu
Inaccuracy of fundamental constants and proposal of the dual publication form of multi-measurand data

Autorzy:

Ezhela, V. V.
Warsza, Z. L.

Powiązania:

https://bibliotekanauki.pl/articles/154130.pdf

Data publikacji:

2011

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

pomiary multi-mezurandu
stałe podstawowe
publikowanie danych skorelowanych
e-publikacje
measurement of multi-measurand
fundamental constancies
correlated data evaluation
e-publishing

Opis:

Po wprowadzeniu scharakteryzowano rolę pomiarów wieloparametrowych w metrologii, nauce, edukacji i dziedzinach gospodarczych. Omówiono nieścisłości w korektach danych podstawowych stałych fizycznych opublikowanych przez CODATA. Jako rozwinięcie opracowywanego Suplementu 2, który rozszerzy zalecenia przewodnika GUM-2008 o wyrażanie wyników pomiarów wieloparametrowych (multi-mezurandu), zaproponowano podjęcie prac nad standaryzacją przedstawiania wyników pomiarów w dualnej formie: na papierze i za pomocą e-publishing. Podano centra światowe będące prekursorami takiego gromadzenia danych.
In this paper the current unsatisfactory situation concerning quality of correlated quantities data obtained from multi-parameter measurements and their exchange in physics, metrology, economy and education is discussed. It is argued that, due to the advent of e-publishing, it is time to change the form of scientific and technical publications reporting measured or evaluated data. Namely: any paper publication reporting the measured data should be associated with file(s) containing complete set of numerical data which comprise the result reported. These data files associated with publication, being properly standardized, will give publishers possibility to deploy the "numerical peer review" to assure the quality of the numerical data and to organize the stable stewardship of the numerical data as they do with textual and graphical information. It is expected that such a form of scientific publication will greatly reduce the number of papers presenting the corrupted measured data and from the other side will simplify data exchange inside the community. It also will assure the quality of preserved data and knowledge for future generations. In multivari-able measurements urgently is needed standardization of the evaluation method and dual measurement data presentation - on the paper and by e-publishing. That allows full numerical review of the multidimensional data, wide dissemination and unlimited in time storage.

Źródło:

Pomiary Automatyka Kontrola; 2011, R. 57, nr 5, 5; 486-490
0032-4140

Pojawia się w:

Pomiary Automatyka Kontrola

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 72.

Tytuł:

Oceny wielokryterialne w procesach decyzyjnych
The multi-criteria evaluations in decision problems

Autorzy:

Zoleński, W.

Powiązania:

https://bibliotekanauki.pl/articles/324875.pdf

Data publikacji:

2015

Wydawca:

Politechnika Śląska. Wydawnictwo Politechniki Śląskiej

Tematy:

proces decyzyjny
kryterium
ocena
multi-criteria
evaluation
decision problem

Opis:

Oceny wielokryterialne złożonych zjawisk są ważną częścią problemów decyzyjnych. W ocenach wielokryterialnych występują różnego typu trudności, a w szczegól-ności liczność i różnorodność ocenianych zjawisk, liczność i różnorodność zmiennych diagnostycznych, charakteryzujących oceniane zjawisko, trudność przekształcenia charakterystyk jakościowych na mierniki ilościowe oraz trudności w agregacji cząstkowych kryteriów oceny. W artykule przedstawiono wybrane modele ocen wielokryterialnych, które odpowiadają różnym sytuacjom decyzyjnym.
Multi-criteria evaluation of complex phenomena is an important part of decision problems. The multi-criteria evaluations are different types of difficulties, in particular, the multiplicity and diversity of the assessed phenomena, the multiplicity and the variety of diagnostic variables characterizing the evaluated phenomenon, the difficulty to transform the quality characteristics of quantitative traits, the difficulty of aggregating sub-criteria. This paper presents selected models of multi-criteria evaluation corresponding to different decision-making situations.

Źródło:

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2015, 78; 541-551
1641-3466

Pojawia się w:

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 73.

Tytuł:

The problem of not driven propellers in Multi - screw ships propulsion arrangements

Autorzy:

Charchalis, A.

Powiązania:

https://bibliotekanauki.pl/articles/247889.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

fast ships
ships screw propeller
multi-screw propulsion arrangements

Opis:

Power requirement for ship's movement depends on their size (water displacement) and sailing speed. The problem is especially important for fast ships, because the speed of movement is generating significant high power requirement, while limited displacement, diminishing a drag quantity from one hand, is a reason of limited draft and consequently limited capacity of a hull from the other. Above facts have strong influence at a number, type, power and size of main engines and propellers. Fast ships are designed for reaching maximum speed, but majority of exploitation time, are cruising at lower speed, called partial speed. That exploitation profile requires stopping of some engines or braking of propellers. Not driven propellers are dragged behind the hull, and work at a turbine mode, giving a torque at a propulsion shaft and creates a negative thrust what means the additional drag. The additional drag of not driven propellers must be calculated during the propulsion design stage, and analysis of speed value during different variants of the ship's movement . Torque values and thrusts can be evaluated basing on the universal hydrodynamic characteristics of propellers. the method and example of calculation of the drag created by free-rotating and stopped propellers of the exemplary propulsion set are presented in the paper.

Źródło:

Journal of KONES; 2012, 19, 2; 83-86
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 74.

Tytuł:

The multi-criteria approach to project selection based on the fuzzy sets theory

Autorzy:

Łapuńka, I.

Powiązania:

https://bibliotekanauki.pl/articles/409592.pdf

Data publikacji:

2012

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

multi-criteria evaluation
fuzzy sets theory
project selection

Opis:

This paper describes an approach to multi-criteria evaluation of project variants based on the fuzzy set theory. The multi-criteria evaluation based on the criteria proposed by experts or decision-makers in the planning phase, during which it is critical to document the tasks to be completed in a project schedule. Fuzzy sets theory transforms criterion indicators into variants fuzzy partial evaluations by means of transformation functions. The method facilitates comparison of different values by transformation to the fuzzy numbers from the range of „´0, 1„Ä.The presented approach offers support for the decision makers in making various kinds of decisions, in all situations when we may determine an evaluation criteria set. Moreover, it takes into consideration versatility of criteria, their hierarchy and expertsˇŚ uncertainty; at the same time it is efficient and quite simple to be implemented in real decision problems.

Źródło:

Research in Logistics & Production; 2012, 2, 2; 193-203
2083-4942
2083-4950

Pojawia się w:

Research in Logistics & Production

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 75.

Tytuł:

Multi-objective conceptual design optimization of a domestic unmanned airship

Autorzy:

Amani, S.
Pourtakdoust, S. H.
Pazooki, F.

Powiązania:

https://bibliotekanauki.pl/articles/949225.pdf

Data publikacji:

2014

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

airship
multi-objective optimization
Pareto optimality

Opis:

Autonomous airships have gained a high degree of importance over the last decades, both theoretically as well and practically. This is due to their long endurance capability needed for monitoring, observation and communication missions. In this paper, a Multi-Objective Optimization approach (MOO) is followed for conceptual design of an airship taking aerody- namic drag, static stability, performance as well as the production cost that is proportional to the helium mass and the hull surface area, into account. Optimal interaction of the afo- rementioned disciplinary objectives is desirable and focused through the MOO analysis. Standard airship configurations are categorized into three major components that include the main body (hull), stabilizers (elevators and rudders) and gondola. Naturally, component sizing and positioning play an important role in the overall static stability and performance characteristics of the airship. The most important consequence of MOO analysis is that the resulting design not only meets the mission requirement, but will also be volumetrically optimal while having a desirable static and performance characteristics. The results of this paper are partly validated in the design and construction of a domestic unmanned airship indicating a good potential for the proposed approach.

Źródło:

Journal of Theoretical and Applied Mechanics; 2014, 52, 1; 47-60
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 76.

Tytuł:

Integrated sustainable freight transport system for city multi-floor manufacturing clusters

Autorzy:

Wiśnicki, Bogusz
Dzhuguryan, Tygran

Powiązania:

https://bibliotekanauki.pl/articles/2064829.pdf

Data publikacji:

2019

Wydawca:

STE GROUP

Tematy:

multi-floor manufacturing
transport system
supply chain management

Opis:

The purpose of the article is to present the integrated sustainable freight transport system dedicated for city clusters. The presented concept and calculation model is the result of a broader study on the effectiveness of production and transport systems in urban areas. The integrated sustainable freight transport system described in this paper serves multi-floor manufacturing clusters and therefore meets two efficiency requirements: technological integration and process sustainability. The integration of in-house transport system servicing multi-floor manufacturing building and supply chain deliveries to/from logistic node is based on efficient use of Intelligent Reconfigurable Trolleys (IRTs). The calculation model of integrated freight transport system allows for the quantitative matching of key elements of the transport system to the multi-floor manufacturing cluster needs. Properly selected and functionally integrated elements of proposed transport system allows to minimize losses and reduce the negative impact of transport on the environment.

Źródło:

Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 151--160
2545-2827

Pojawia się w:

Multidisciplinary Aspects of Production Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 77.

Tytuł:

The voice of conservation-restoration on multi-disciplinary restoration projects

Autorzy:

Røskar, Tanja

Powiązania:

https://bibliotekanauki.pl/articles/113795.pdf

Data publikacji:

2019

Wydawca:

Politechnika Lubelska. Polski Komitet Narodowy Międzynarodowej Rady Ochrony Zabytków

Tematy:

building restoration
multi-disciplinary work
conservation-restoration
conservation-restoration ethics
cooperation

Opis:

As conservator-restorers we should be „a voice of reason”, an advocate that speaks for the cultural heritage values of our built heritage. However, we are often only one voice in a large group consisting of everything from structural engineers, geologists and carpenters to economic advisors and bureaucrats. Being a conservator-restorer in such settings often turns out to be a great balancing act. On the one hand, we are supposed to protect the buildings against any intervention that will compromise its authenticity and cultural values. On the other hand, we must allow as much protective work as possible to ensure the buildings’ future. Questions that can arise for a conservator-restorer during and after discussions in multi-disciplinary groups are many. Questions that needs answering before work starts. Are the conservator-restorer and the master craftsperson really on each end of the scale in a project, or is it just that we use different words? Is it conservation ethics versus the practical view of the engineer, or can both sides be pragmatic and find a new and possibly better solution? Is it possible that the conservator-restorer and the funding body can meet in the middle, or can that jeopardize the project?

Źródło:

Ochrona Dziedzictwa Kulturowego; 2019, 8; 281-290
2543-6422

Pojawia się w:

Ochrona Dziedzictwa Kulturowego

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 78.

Tytuł:

Pałac wielorodzinny czy miejski monument?
Multi family palace or urban monument?

Autorzy:

Początko, M.

Powiązania:

https://bibliotekanauki.pl/articles/97061.pdf

Data publikacji:

2017

Wydawca:

Politechnika Krakowska im. Tadeusza Kościuszki. Wydział Architektury. Instytut Projektowania Architektonicznego. Zakład Architektury Mieszkaniowej i Kompozycji Architektonicznej

Tematy:

dom wielorodzinny
miejski monument
Bofill
multi-family house
urban monument

Opis:

Leon Krier mówi, że miasto składa się z ulic i placów, kwartałów i monumentalnych budowli. Miejsce domu jest nieokreślone. Czy brak powagi i wypełnienie codzienną użytkowością wyklucza go ze świata architektury monumentalnej? Ricardo Bofill zaprzecza – proponuje mieszkanie w pałacu, w miejskim monumencie na obrzeżach metropolii. To w jego budowlach mieszkaniowych odszukać możemy postmodernistyczne próby złączenia pofragmentowanego miasta i artystyczne poszukiwania nowych źródeł architektury, które prowadzą, niczym literacka trawestacja, do zaskakujących rezultatów. Być może dlatego Charles Jencks architekturę tych obiektów nazywa cudownym paradoksem.
Leon Krier says that the city is made up of streets and squares, blocks and monumental buildings. The location of the house is unspecified. Does the lack of seriousness and fulfilling everyday usability exclude it from the world of monumental architecture? Ricardo Bofill denies it – he proposes an apartment in the palace, in an urban monument on the outskirts of the metropolis. It is in his residential buildings that one can find postmodern attempts to join the fragmented city and artistic search for new sources of architecture, which, like a literary travesty, lead to surprising results. Perhaps that is why Charles Jencks calls the architecture of these buildings a wonderful paradox.

Źródło:

Pretekst; 2017, 7; 101-104
2449-5247

Pojawia się w:

Pretekst

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 79.

Tytuł:

Multi-constrained topology optimization using constant criterion surface algorithm

Autorzy:

Mrzygłód, M.

Powiązania:

https://bibliotekanauki.pl/articles/201310.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

multi-constrained topology optimization
stress and fatigue constraints
constant criterion surface algorithm

Opis:

This paper sets out to describe a multi-constrained approach to topology optimization of structures. In the optimization, a constant criterion surface algorithm and the multi-constraint procedure is used. The multi-constraint procedure consists of constraints normalization and equivalent design space assembling. The work is illustrated by an example of the L-shaped domain optimization with the horizontal line support and complex loads. The example takes into consideration stress, fatigue and compliance constraints. The separate and simultaneous application of constraints resulted in significant differences in structure topology layouts. The application of a fatigue constraint gave more conservative results when compared to static stress or compliance limitations. The multi-constrained approach allowed effectively lowering the mass of the structure while satisfying all constraints.

Źródło:

Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 2; 229-236
0239-7528

Pojawia się w:

Bulletin of the Polish Academy of Sciences. Technical Sciences

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 80.

Tytuł:

Efficient multi-classifier wrapper feature-selection model. Application for dimension reduction in credit scoring

Autorzy:

Bouaguel, Waad

Powiązania:

https://bibliotekanauki.pl/articles/27312845.pdf

Data publikacji:

2022

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

multi-classifier
heuristic
dimensionality reduction
credit scoring

Opis:

The task of identifying the most relevant features for a credit-scoring application is a challenging task. Reducing the number of redundant and unwanted features is an inevitable task for improving the performance of a credit-scoring model. The wrapper approach is usually used in credit-scoring applications to identify the most relevant features. However, this approach suffers from the issue of subset generation and the use of a single classifier as an evaluation function. The problem here is that each classifier may give different results that can be interpreted differently. Hence, we propose an ensemble wrapper featureselection model in this study that is based on a multi-classifier combination. In the first stage, we address the problem of subset generation by minimizing the search space through a customized heuristic. Then, a multi-classifier wrapper evaluation is applied using two-classifier-arrangement approaches in order to select a set of mutually approved sets of relevant features. The proposed method was evaluated on four credit datasets and has shown good performance as compared to individual classifier results.

Źródło:

Computer Science; 2022, 23 (1); 133--155
1508-2806
2300-7036

Pojawia się w:

Computer Science

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 81.

Tytuł:

Multi-objective optimization of high speed vehicle-passenger catamaran by genetic algorithm. Part I. Theoretical background on evolutionary multi objective optimization

Autorzy:

Sekulski, Z.

Powiązania:

https://bibliotekanauki.pl/articles/259303.pdf

Data publikacji:

2011

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

ship structure
multi-objective optimization
evolutionary algorithm
genetic algorithm
Pareto domination
set of non-dominated solutions

Opis:

Real ship structural design problems are usually characterized by presence of many conflicting objectives. Simultaneously, a complete definition of the optimal structural design requires a formulation of size-topology-shape-material optimization task unifying the optimization problems from these four areas and giving an effective solution of this problem. So far, a significant progress towards the solution of this problem has not been obtained. An objective of the present paper was to develop an evolutionary algorithm for multi-objective optimization of the structural elements of the large spatial sections of ships. Selected elements of the multi-criteria optimization theory have been presented in details. Methods for solution of the multi-criteria optimization problems have been discussed with the focus on the evolutionary optimization algorithms. In the paper an evolutionary algorithm where selection takes place based on the aggregated objective function combined with domination attributes as well as distance to the asymptotic solution is proposed and applied to solve the problem of optimizing structural elements with respect to their weight and surface area on a high speed vehicle-passenger catamaran structure with several design variables, such as plate thickness, scantlings of longitudinal stiffeners and transverse frames, and spacing between longitudinals and transversal members. Details of the computational models were at the level typical for conceptual design. Scantlings were analyzed using the selected rules of a classification society. The results of numerical experiments with the use of the developed algorithm are presented. They show that the proposed genetic algorithm can be an efficient multi-objective optimization tool for ship structures optimization. The paper will be published in three parts: Part I: Theoretical background on evolutionary multi-objective optimization, Part II: Computational investigations, and Part III: Analysis of the results.

Źródło:

Polish Maritime Research; 2011, 2; 3-18
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 82.

Tytuł:

Low Power, High Dynamic Range Analogue Multiplexer for Multi-Channel Parallel Recording of Neuronal Signals Using Multi-Electrode Arrays

Autorzy:

Rydygier, P.
Dąbrowski, W.
Fiutowski, T.
Wiącek, P.

Powiązania:

https://bibliotekanauki.pl/articles/226679.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

analogue multiplexer
low power amplifier
multi-channel electronics
multielectrode arrays
neural signal

Opis:

In the paper we present the design and test resultsof an integrated circuit combining a sample & hold circuit andan analogue multiplexer. The circuit has been designed as abuilding block for a multi-channel Application Specific IntegratedCircuit (ASIC) for recording signals from alive neuronal tissueusing high-density micro-electrode arrays (MEAs). The designis optimised with respect to critical requirements for suchapplications, i.e. short sampling time, low power dissipation, goodl inearity and high dynamic range. Presented design comprisessample&hold circuits with class AB operational amplifier, novelshift register, which allows minimising cross-coupling of the clocksignal and control logic. The circuit has been designed in 0.35µm CMOS process and has been successfully implemented in aprototype multi-channel ASIC.

Źródło:

International Journal of Electronics and Telecommunications; 2010, 56, 4; 399-404
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 83.

Tytuł:

Retracts and homotopies for multi-maps

Autorzy:

Suszycki, A.

Powiązania:

https://bibliotekanauki.pl/articles/1363747.pdf

Data publikacji:

1983

Wydawca:

Polska Akademia Nauk. Instytut Matematyczny PAN

Źródło:

Fundamenta Mathematicae; 1983, 115, 1; 9-26
0016-2736

Pojawia się w:

Fundamenta Mathematicae

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 84.

Tytuł:

RIS-aided Multi-hop Backhauling for 5G/6G UAV-assisted Access Points

Autorzy:

Janji, Salim
Sroka, Paweł

Powiązania:

https://bibliotekanauki.pl/articles/24200733.pdf

Data publikacji:

2023

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

backhaul link
multi-hop
RIS
UAV

Opis:

Drones are considered to be an important part of future 6G telecommunication systems. Thanks to their quick deployment potential, they provide additional connectivity options in the form of a flying hotspot. However, in such use cases, they typically require a wireless backhaul link to facilitate their proper operation, which might be a challenging task in dense urban environments. One of the potential methods that may be relied upon to connect such nodes is the integrated access and backhaul (IAB) approach, where part of the spectrum allocated to users accessing the base station is used for wireless backhauling. Thus, in this work, we consider the problem of establishing a multi-hop wireless backhaul link following the IAB concept, with the aid of drone relay stations (DRSs) and reconfigurable intelligent surfaces (RISs). We formulate the problem of coverage improvement with a fixed number of relays, assuming certain throughput requirements for the backhaul link. The simulations show that the use of RISs offers a coverage improvement in such a scenario or a reduction in the number of nodes involved in ensuring the required backhaul performance.

Źródło:

Journal of Telecommunications and Information Technology; 2023, 2; 63--69
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 85.

Tytuł:

Multi-criteria decision problems in information technology program management

Autorzy:

Szymaczek, M.
Iskierka, S.

Powiązania:

https://bibliotekanauki.pl/articles/97656.pdf

Data publikacji:

2014

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

multi-criteria problems
decision aid
program
program management
project management
PMI

Opis:

The authors identify the crucial multi-criteria decision problems in program management in themes defined in Standard for Program Management published by PMI (Project Management Institute). Solving presented problems may be supported by MCDA methods. This article is the complement to the new standard for program management that doesn’t address multi-criteria decision aid.

Źródło:

Computer Applications in Electrical Engineering; 2014, 12; 582-587
1508-4248

Pojawia się w:

Computer Applications in Electrical Engineering

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 86.

Tytuł:

Evolutionary multi–objective weather routing of sailboats

Autorzy:

Sobecka, Ewa
Szłapczyński, Rafał
Życzkowski, Marcin

Powiązania:

https://bibliotekanauki.pl/articles/1585076.pdf

Data publikacji:

2020

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

sailing vessels
weather routing
evolutionary multi-objective optimization
weather forecasts
navigation

Opis:

The paper presents a multi-objective method, which optimises the route of a sailboat. The presented method makes use of an evolutionary multi-objective (EMO) algorithm, which performs the optimisation according to three objective functions: total passage time, a sum of all course alterations made during the voyage and the average angle of heel. The last two of the objective functions reflect the navigator’s and passenger’s comfort, which may decrease with multiple turns or when experiencing an excessive heel angle for a long time. The optimisation process takes into account static bathymetry-related constraints as well as dynamic constraints related to the sailboat’s safety in changing wind and wave conditions. The method makes use of all of the above and finally returns an approximated Pareto set containing non-dominated solutions to the optimisation problem. The developed method has been implemented as a simulation application. The paper includes selected simulation results followed by their discussion.

Źródło:

Polish Maritime Research; 2020, 3; 130-139
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 87.

Tytuł:

The selected problems of multi-layer pavements modelling in design and diagnostics

Autorzy:

Graczyk, M.
Rafa, J.

Powiązania:

https://bibliotekanauki.pl/articles/241609.pdf

Data publikacji:

2007

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

multi-layer
pavement
modelling
dynamic impact
thermal impact

Opis:

This paper will present selected problems connected with modelling of multi-layer pavements. Multi-layer pavement models, which utilize solutions such as the one of Boussinesq, Burmister, Kogan, Odemark and others, contain many simplifications, which bas a significant influence on the estimated real value of stress, strain, deflection as well as on the coefficient of pavement layers interaction. In the article based on the experiments carried out, we want to present our own layered-pavement models and solutions to them, which can be used mainly in the diagnostics of bearing capacity. The estimation of bearing capacity is conducted on the basis of full time data obtained with the FWD device. Moreover, the conclusions implicated by the above mentioned analysis are of big importance in design and operation process of road and airfield pavements. They pertain not only to the influence of modulus and thickness of particular layers but also to the way of pavement layers interaction, Poisson's coefficient, thermal characteristics and others.

Źródło:

Journal of KONES; 2007, 14, 1; 209-218
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 88.

Tytuł:

Approximate multi-Jensen-cubic mappings and a fixed point theorem

Autorzy:

Ramzanpour, Elahe
Bodaghi, Abasalt

Powiązania:

https://bibliotekanauki.pl/articles/1797177.pdf

Data publikacji:

2020-04-02

Wydawca:

Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie

Tematy:

Banach space
multi-Jensen-cubic functional equation
Hyers-Ulam stability

Opis:

In this paper, we introduce multi-Jensen-cubic mappings and unify the system of functional equations defining the multi-Jensen-cubic mapping to a single equation. Applying a fixed point theorem, we establish the generalized Hyers-Ulam stability of multi-Jensen-cubic mappings. As a known outcome, we show that every approximate multi-Jensen-cubic mapping can be multi-Jensen-cubic.

Źródło:

Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica; 2020, 19; 141-154
2300-133X

Pojawia się w:

Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 89.

Tytuł:

Multi-loop control system design

Autorzy:

Alekseev, A.
Zamyatin, S.
Rudnicki, V.

Powiązania:

https://bibliotekanauki.pl/articles/201635.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

control system
multi-loop system
plant identification
auto tuning controller
real interpolation method

Opis:

The approach based on a special case of the Laplace transform, which allows to design multi-loop system is considered. The tuning regulators program on the base of this approach is developed. The numerical example is shown.

Źródło:

Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 3; 627-630
0239-7528

Pojawia się w:

Bulletin of the Polish Academy of Sciences. Technical Sciences

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 90.

Tytuł:

Strategy of multi-channel marketing as a success factor for the pharmaceutical market

Autorzy:

Wick, Alexander
Strazovska, Lumbomira

Powiązania:

https://bibliotekanauki.pl/articles/2130324.pdf

Data publikacji:

2020

Wydawca:

Instytut Studiów Międzynarodowych i Edukacji Humanum

Tematy:

multi-channel retailing
drug supply
field service

Opis:

The distribution channels in the pharmaceutical industry have remained constant for several decades. However, in the course of digitalization and the new possibilities that come with it, this industry is not immune to the development of new distribution channels and to the question of whether the exist- ing ones are still up-to-date and in line with the market. This article deals exactly with this problem and weighs up the advantages and disadvantages of multi-channel retailing for the pharmaceutical industry.

Źródło:

Humanum. Międzynarodowe Studia Społeczno-Humanistyczne; 2020, 1(36); 173-178
1898-8431

Pojawia się w:

Humanum. Międzynarodowe Studia Społeczno-Humanistyczne

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 91.

Tytuł:

Four-dimensional uncertain multi-objective multi-item transportation problem

Autorzy:

Kakran, Vandana
Dhodiya, Jayesh

Powiązania:

https://bibliotekanauki.pl/articles/2175838.pdf

Data publikacji:

2022

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

four-dimensional
transportation problem
uncertain programming
optimistic value model
fuzzy technique

Opis:

This paper considers a four-dimensional multi-objective multi-item transportation problem (4DMOMITP), where all the parameters are regarded as uncertain variables. In this paper, three mathematical models, namely expected value model (EVM), optimistic value model (OVM) and dependent optimistic-constrained model (DOCM), are discussed for the uncertain model of 4DMOMITP. These models are converted into their corresponding deterministic forms using different ranking criteria from uncertainty theory. These deterministic models are then solved by using the Lingo 18.0 software, utilizing three different classical approaches for obtaining a solution. A numerical example is given to illustrate the application of the model and the solution algorithm. A sensitivity analysis for the OVM and DOCM models has also been performed with respect to the confidence levels.

Źródło:

Operations Research and Decisions; 2022, 32, 2; 52--73
2081-8858
2391-6060

Pojawia się w:

Operations Research and Decisions

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 92.

Tytuł:

Reconfigurable and tunable multi-tap bandpass microwave photonic filter based on a hybrid-gain-assisted multi-wavelength fiber ring laser

Autorzy:

Peng, Mengmeng
Wang, Fei
Shi, Lun
Huang, Jingxin
Kang, Wen

Powiązania:

https://bibliotekanauki.pl/articles/174908.pdf

Data publikacji:

2019

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

microwave photonic filter
multi-wavelength fiber ring laser
microwave signal processing

Opis:

A reconfigurable and tunable multi-tap bandpass microwave photonic filter based on a hybrid-gain-assisted multi-wavelength fiber ring laser (HMFRL) is proposed and experimentally demonstrated. The HMFRL containing a hybrid gain medium and a high birefringence fiber loop mirror serves as the multiple taps generator for the microwave photonic filter. In order to realize a bandpass filter, the multiple taps are phase modulated, then the modulated signal is launched into a coil of dispersion compensating fiber to introduce different time delays for each tap. As a result, a bandpass response is obtained at the output of a high speeding photodetector. By adjusting the bias of the semiconductor optical amplifier from 344 to 450 mA, the number of multiple taps can be increased without optical signal-to-noise ratio degradation. Thus, a multi-tap bandpass microwave photonic filter with bandwidth reconfiguring from 449 to 274 MHz is achieved. In addition, by changing the length of polarization maintaining fiber in the high birefringence fiber loop mirror, the wavelength spacing of the multiple taps can be adjusted, making the bandpass microwave photonic filter’s free spectral range tunable.

Źródło:

Optica Applicata; 2019, 49, 3; 499-507
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 93.

Tytuł:

Towards a distributed solution to multi-robot task allocation problem with energetic and spatiotemporal constraints

Autorzy:

Zitouni, Farouq
Harous, Saad
Maamri, Ramdane

Powiązania:

https://bibliotekanauki.pl/articles/305365.pdf

Data publikacji:

2020

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

multi-robot systems
multi-robot task allocation
energetic constraints
spatial constraints
temporal constraints
objective function
parallel distributed guided genetic algorithms

Opis:

This paper tackles the Multi-Robot Task Allocation problem. It consists of two distinct sets: a set of tasks (requiring resources), and a set of robots (offering resources). Then, the tasks are allocated to robots while optimizing a certain objective function subject to some constraints; e.g., allocating the maximum number of tasks, minimizing the distances traveled by the robots, etc. Previous works mainly optimized the temporal and spatial constraints, but no work focused on energetic constraints. Our main contribution is the introduction of energetic constraints on multi-robot task allocation problems. In addition, we propose an allocation method based on parallel distributed guided genetic algorithms and compare it to two state-of-the-art algorithms. The performed simulations and obtained results show the effectiveness and scalability of our solution, even in the case of a large number of robots and tasks. We believe that our contribution is applicable in many contemporary areas of research such as smart cities and related topics.

Źródło:

Computer Science; 2020, 21 (1); 3-24
1508-2806
2300-7036

Pojawia się w:

Computer Science

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 94.

Tytuł:

Evolutionary Learning of Goal-Oriented Communication Strategies in Multi-Agent Systems

Autorzy:

Althnian, A.
Agah, A.

Powiązania:

https://bibliotekanauki.pl/articles/384735.pdf

Data publikacji:

2015

Wydawca:

Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów

Tematy:

multi-agent system
communication strategy
evolutionary communication
genetic algorithms

Opis:

Previous studies in multi-agent systems have observed that varying the type of information that agents communicate, such as goals and beliefs, has a significant impact on the performance of the system with respect to different, usually conflicting, performance metrics, such as speed of solution, communication efficiency, and travel distance/cost. Therefore, when designing a communication strategy for a multi-agent system, it is unlikely that one strategy can perform well with respect to all of performance metrics. Yet, it is not clear in advance, which strategy will be the best with respect to each metric. With multi-agent systems being a common paradigm for building distributed systems in different domains, performance goals can vary from one application to the other according to the domain’s specifications and requirements. To address this issue, this work proposes a genetic algorithm-based approach for learning a goal- oriented communication strategy. The approach enables learning an effective communication strategy with respect to flexible, user-defined measurable performance goals. The learned strategy will determine what, when, and to whom information should be communicated during the course of task execution in order to improve the performance of the system with respect to the stated goal. Our preliminary evaluation shows that the proposed approach has promising results and the learned strategies have significant usefulness in improving the performance of the system with respect to the goals.

Źródło:

Journal of Automation Mobile Robotics and Intelligent Systems; 2015, 9, 3; 52-64
1897-8649
2080-2145

Pojawia się w:

Journal of Automation Mobile Robotics and Intelligent Systems

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 95.

Tytuł:

Monotone method for Riemann-Liouville multi-order fractional differential systems

Autorzy:

Denton, Z.

Powiązania:

https://bibliotekanauki.pl/articles/254754.pdf

Data publikacji:

2016

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

fractional differential systems
multi-order systems
lower and upper solutions
monotone method

Opis:

In this paper we develop the monotone method for nonlinear multi-order N-systems of Riemann-Liouville fractional differential equations. That is, a hybrid system of nonlinear equations of orders qi where 0 < qi < 1. In the development of this method we recall any needed existence results along with any necessary changes. Through the method's development we construct a generalized multi-order Mittag-Leffler function that fulfills exponential-like properties for multi-order systems. Further we prove a comparison result paramount for the discussion of fractional multi-order inequalities that utilizes lower and upper solutions of the system. The monotone method is then developed via the construction of sequences of linear systems based on the upper and lower solutions, and are used to approximate the solution of the original nonlinear multi-order system.

Źródło:

Opuscula Mathematica; 2016, 36, 2; 189-206
1232-9274
2300-6919

Pojawia się w:

Opuscula Mathematica

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 96.

Tytuł:

Multi-criteria decision-making on road transport vehicles by the AHP method

Autorzy:

Baric, Danijela
Zeljko, Luka

Powiązania:

https://bibliotekanauki.pl/articles/2056097.pdf

Data publikacji:

2021

Wydawca:

Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji

Tematy:

transport
vehicles
road
AHP
multi-criteria decision-making

Opis:

Decision-making processes require the selection of appropriate and choose the optimal solution for implementation. This means that different criteria and their sub-criteria evaluate various alternatives of possible solutions to determine the optimal solution. The research focuses on an Analytic Hierarchy Process (AHP) as one of the multi-criteria decision-making (MCDM) methods and its implementation to evaluate road transport vehicles. The AHP is one of the most used methods for evaluating projects in transport and traffic area. This paper presents a comprehensive review of studies on road transport vehicles evaluated by the AHP method. To gather research articles for the study, several databases such as Web of Science and Scopus were searched. The focus of the research is on road transport vehicles but the performance of the AHP method in the road sector, in general, is briefly reviewed. The results show that most of the studies use AHP for the evaluation of electric and autonomous vehicles. Finally, research results are discussed and recommendations for future research are proposed.

Źródło:

Archiwum Motoryzacji; 2021, 94, 4; 17--26
1234-754X
2084-476X

Pojawia się w:

Archiwum Motoryzacji

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 97.

Tytuł:

Effects of Nonlinearity on Bolt Forces for the Operational State of a Multi-bolted Connection

Autorzy:

Grzejda, R.

Powiązania:

https://bibliotekanauki.pl/articles/298134.pdf

Data publikacji:

2013

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie

Tematy:

multi-bolted connection
operational state
bolt force

Opis:

In the paper modelling and calculations of an asymmetrical multi-bolted connection at the operational stage are presented. The physical model of the joint is based on a flexible flange element that is connected with a rigid support by means of linear spring elements, which substitute bolts. Between the flange element and the support, the linear Winkler model of a contact layer is taken into consideration. The multi-bolted system is preloaded and then subjected to an eccentric normal load. Influence of nonlinearity of the contact layer between joined elements on computational values of bolt forces has been investigated. Results of calculations for several different values of the joined element’s thickness are pointed out.

Źródło:

Technical Sciences / University of Warmia and Mazury in Olsztyn; 2013, 16(3); 221-231
1505-4675
2083-4527

Pojawia się w:

Technical Sciences / University of Warmia and Mazury in Olsztyn

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 98.

Tytuł:

On multi-state safety analysis in shipping

Autorzy:

Dziula, P.
Jurdziński, M.
Kołowrocki, K.
Soszyńska, J.

Powiązania:

https://bibliotekanauki.pl/articles/2069623.pdf

Data publikacji:

2007

Wydawca:

Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności

Tematy:

safety
multi-state system
operation process
complex system
shipping

Opis:

A multi-state approach to defining basic notions of the system safety analysis is proposed. A system safety function and a system risk function are defined. A basic safety structure of a multi-state series system of components with degrading safety states is defined. For this system the multi-state safety function is determined. The proposed approach is applied to the evaluation of a safety function, a risk function and other safety characteristics of a ship system composed of a number of subsystems having an essential influence on the ship safety. Further, a semi-Markov process for the considered system operation modelling is applied. The paper also offers a general approach to the solution of a practically important problem of linking the multi-state system safety model and its operation process model. Finally, the proposed general approach is applied to the preliminary evaluation of a safety function, a risk function and other safety characteristics of a ship system with varying in time its structure and safety characteristics of the subsystems it is composed of.

Źródło:

Journal of Polish Safety and Reliability Association; 2007, 1; 83--96
2084-5316

Pojawia się w:

Journal of Polish Safety and Reliability Association

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 99.

Tytuł:

On the prognosis of failure coincidences in multi-system scenarios

Autorzy:

Rakowsky, U. K.

Powiązania:

https://bibliotekanauki.pl/articles/2069649.pdf

Data publikacji:

2010

Wydawca:

Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności

Tematy:

coincidence probability
coincidence patterns
multi-system scenario
integral products
staple graphs

Opis:

The objective of the approach is to calculate the probability of failure coincidences or maintenance conflicts, respectively, in an n-system-single-maintenance-unit scenario. Beside the operation of conventional systems, reliability-adaptive systems can be considered as well in this scenario. The approach applies multiple integrals over probability density functions, which are arranged Matryoshka-like. The contribution discusses permutations of coincidence patterns explicitly and general coincidence probabilities. So-called staple graph and staple graph coincidence permutation diagrams are introduced as graphical representations.

Źródło:

Journal of Polish Safety and Reliability Association; 2010, 1, 1; 203--214
2084-5316

Pojawia się w:

Journal of Polish Safety and Reliability Association

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce

Skocz do pozycji: 100.

Tytuł:

Position of OLAF in a multi-level governance system of the European Union

Autorzy:

Janusz, Ruszkowski,

Powiązania:

https://bibliotekanauki.pl/articles/895176.pdf

Data publikacji:

2019-11-19

Wydawca:

Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego

Tematy:

OLAF
multi-level governance
supra-suprantional level
European Union

Opis:

Pozycja OLAF w systemie wielopoziomowego sprawowania rządów w Unii Europejskiej Celem artykułu jest zbadanie miejsca jakie zajmuje OLAF w systemie wielopoziomowego zarządzania Unii Europejskiej ze specyficznymi inter-instytucjonalnymi konsekwencjami tego miejsca, przy założeniu, że OLAF nie jest klasyczną instytucją ponadnarodową. Istotną rolę w przedmiocie badań odgrywa Komisja Europejska (KE), która ustanowiła OLAF i nadała jemu kompetencje do działania. Ramy te są ważne i mają wpływ na precyzję usytuowania OLAF w systemie wielopoziomowego zarządzania. Jeżeli OLAF jako agent i nadzorca ma kompetencje kontrolne nad ponadnarodowymi instytucjami, włącznie ze swoim mocodawcą − Komisją Europejską − to nie jest on podobny do innych instytucji ponadnarodowych. Pomocnymi w badaniu narzędziami teoretyczno-metodolo gicznymi są, z jednej strony teoria mocodawca-agent (Principal/Agent Theory, PAT) oraz jej mutacja − teoria mocodawca-agent-nadzorca (Principal/Agent/Supervisor Theory, PSAT), a z drugiej strony koncepcja wielopoziomowego zarządzania (Multi-level Governance − MLG).

Źródło:

Przegląd Europejski; 2019, 3; 103-120
1641-2478

Pojawia się w:

Przegląd Europejski

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

Zmień widok

• na półce