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Tytuł:
Research on the side deflection of the saw band of a joinery band saw influenced by the selected technical and technological factors
Autorzy:
Krilek, Jozef
Kuvik, Tomáš
Kováč, Ján
Melicherčík, Ján
Powiązania:
https://bibliotekanauki.pl/articles/409900.pdf
Data publikacji:
2020
Wydawca:
STE GROUP
Tematy:
band saw
saw band
stability
side deflection
Opis:
The paper focuses on measuring and evaluating the impact of selected technical and technological factors - the height of adjustable guides and stretching force - on the side deflection of the saw band of a joinery band saw. There is a detailed description of the ways the side deflection can be measured. In order to find out the intensity of the stretching force was used portable tension meter SANDVIK 5000, enabling to check the tensile stress in the saw blades of a gang saw or in the saw bands of a band saw. The actual experiment was conducted on a joinery band saw, at the cutting rate vc = 15 m·s-1. The results of the measurements confirmed the theoretical assumption of the impact of the selected technical and technological factors on the stability of the saw band, where the side deflection decreases with increasing stretching force and increases with increasing height of the guides. The stability of the saw band affects the quality of the surface to be treated, thus saving the cost of machining the workpiece and making work productivity more efficient.
Źródło:
Management Systems in Production Engineering; 2020, 3 (28); 148-153
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance Analysis of Vertical Handoff Metrics using Variance Based Algorithms
Autorzy:
Bijwe, A.
Dethe, C. G.
Powiązania:
https://bibliotekanauki.pl/articles/108786.pdf
Data publikacji:
2015
Wydawca:
Społeczna Akademia Nauk w Łodzi
Tematy:
SAW
TOPOSIS
GRA
MEW
Opis:
Vertical handover is the evolving concept in 4G for seamless communication between heterogeneous networks. In this paper, our main objective is to analyze handover between two WLAN, two Wimax, two UMTS networks. The vertical handover decision is taken based on the variance based algorithm, which calculates the variance of parameters such as delay, jitter, bandwidth and packet loss for various above mentioned networks and the network with most of the parameters with minimum variance is selected. This algorithm is also compared with other algorithms such as MEW (Multiplicative experiment weighting), SAW (Simple Additive Weighting), TOPOSIS (Technique for order preference by similarity to ideal solution) and GRA (Grey Relational Analysis). These algorithms are appropriate for different traffic classes. Simulation results for proposed variance based algorithm in Matlab is discussed and compared with other Multiple attribute decision making algorithm basis of bandwidth; jitter, delay etc. are discussed in the paper. It can be seen that the proposed variance algorithm gives less packet delay than all the algorithms, Jitter is also is least than all the other algorithms.
Źródło:
Journal of Applied Computer Science Methods; 2015, 7 No. 1; 33-42
1689-9636
Pojawia się w:
Journal of Applied Computer Science Methods
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of airside aerodrome infrastructure by SAW method with weights from Shannons interval entropy
Autorzy:
Żak, Jolanta
Gołda, Paweł
Cur, Krzysztof
Zawisza, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2067399.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
entropy
aerodrome infrastructure
SAW
Opis:
Multi-criteria decision support (MCDM) methods are widely used in many areas of science. This applies to economic, social and technical sciences. Implementing activities at the strategic, tactical or operational level requires appropriate tools to support decision-makers. The use of these tools requires the preparation of a decision model along with the formalization of the goal and the acquisition and preparation of data to make the decision accurate. Due to the wide application of MCDM in engineering practice, the article presents their application in air transport. It is an area that is constantly evolving, and all decisions at the strategic level have long-term effects and must be adequately justified. In the paper a compartmental extension of the classical SAW method with weights obtained using the compartmental Shannon entropy was proposed. This paper presents issues concerning the choice of airport layout and describes the problems that occur in determining the cost and capacity of airports. This paper reviews the literature on airport capacity and operations and airside air transport processes and the application of various multi-criteria decision support methods to airport problems. The main part of the article contains an optimization mathematical model aimed at determining the parameters of the elements comprising the airport, on the basis of which a simulation model was developed and a modified method of multi-criteria evaluation of SAW taking into account the interval numbers was presented, in which the set of weights was estimated by the Shannon entropy method. In the application part for 3 variants of the airport arrangement, the parameters were determined in the form of interval numbers and then evaluated using the presented method. The presented numerical example shows that the proposed method is an excellent tool to assist in solving complex decision problems where the data are imprecise and represented by interval numbers.
Źródło:
Archives of Transport; 2021, 60, 4; 171--185
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical Analysis of Sensitivity of SAW Structure to the Effect of Toxic Gases
Autorzy:
Hejczyk, T.
Pustelny, T.
Wszołek, B.
Jakubik, W.
Maciak, E.
Powiązania:
https://bibliotekanauki.pl/articles/177695.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
surface acoustics wave SAW
SAW
Ingebrigtsen’s formula
gas diffusion equations
gaseous acoustic sensors
numerical analyses of SAW structures
Opis:
The paper presents the results of numerical analysis of the SAW gas sensor in the steady and non-steady states. The effect of SAW velocity changes vs surface electrical conductivity of the sensing layer is predicted. The conductivity of the porous sensing layer above the piezoelectric waveguide depends on the profile of the diffused gas molecule concentration inside the layer. The Knudsen’s model of gas diffusion was used. Numerical results for the effect of gas CH4 on layers: WO3, TiO2, NiO, SnO2 in the steady state and CH4 in the non-steady state in recovery step in the WO3 sensing layer have been shown. The main aim of the investigation was to study thin film interaction with target gases in the SAW sensor configuration based on simple reaction-diffusion equation. The results of the numerical analysis allow to select the sensor design conditions, including the morphology of the sensor layer, its thickness, operating temperature, and layer type. The numerical results basing on the code elaborated numerical system (written in Python language), were analysed. The theoretical results were verified and confirmed experimentally.
Źródło:
Archives of Acoustics; 2016, 41, 4; 747-755
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of chain saw pitch on vibration level on the internal combustion chain saw handles during cross cutting of wood
Wpływ podziałki piły łańcuchowej na poziom drgań uchwytów pilarki spalinowej podczas przerzynki drewna
Autorzy:
Skarzynski, J.
Pietrkiewicz, P.
Powiązania:
https://bibliotekanauki.pl/articles/56211.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
chain saw
vibration level
internal combustion chain saw
handle
cross-cutting
wood cutting
Opis:
Effect of chain saw pitch on vibration level on the internal combustion chain saw handles during cross cutting of wood. Results of investigations on the efect of chain saw pitch on the vibration level recorded on the internal combustion chain saw handles are presented. The investigations can contribute to learning of factors that intensify vibrations existing during cross cutting of wood with the use of chain saws of different pitch values; they can be also a source of practical instructions for the sawmen-operators of internal combustion chain saws to reduce the hazard of mechanical vibrations. Basing on the results of investigations one can find that the chain saw pitch affects vibration level on the machine handles; it increases along with an increase in the pitch.
Wpływ podziałki piły łańcuchowej na poziom drgań uchwytów pilarki spalinowej podczas przerzynki drewna. W artykule przedstawiono wyniki badań nad wpływem wielkości podziałki piły łańcuchowej na poziom drgań rejestrowanych na uchwytach pilarki spalinowej. Przedstawione badania mogą przyczynić się do poznania czynników intensyfikujących drgania występujące podczas przerzynki drewna z zastosowaniem pił łańcuchowych o różnych wielkościach podziałek oraz mogą być źródłem praktycznych wskazówek dla drwali operatorów pilarek spalinowych w kwestii zmniejszenia ich narażenia na drgania mechaniczne. Na podstawie wyników badań można stwierdzić, że wielkość podziałki piły łańcuchowej wpływa na poziom drgań na uchwytach pilarki. Wraz ze wzrostem podziałki piły łańcuchowej, drgania emitowane przez pilarkę zwiększają się.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Agriculture; 2013, 61 Agric.Forest Eng.
0208-5712
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Agriculture
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of technological usefulness of panel production line in shipbuilding process
Autorzy:
Urbański, T.
Graczyk, T.
Taraska, M.
Iwańkowicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/259325.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
panel production line
welding technology
SAW
SAW-tandem
GMAW-tandem
FCAW
ship hull
Opis:
This paper presents assessment of technological usefulness of panel production line in prefabrication process of large ship hull sections, in which special attention is paid to producibility of welding operations. Basing on the assessment these authors worked out hierarchy of analyzed sequences of welding technological processes as well as production line stands used for the processes. The assessment was performed on the basis of analysis of a concept of panel production line based on real production lines functioning in shipbuilding industry, as well as technical documentation of typical hull sections of a multi-purpose ferry. The presented analysis took into account impact of technological - constructional parameters onto producibility of welding process of prefabricated sections. Among these parameters the following were numbered: mass of the sections and number of their elements, total length of welds, labour consumption, material consumption as well as linear heat input in welding operations. On the basis of the achieved results, places which worsen effectiveness of production line operation were identified, as a result it was possible to formulate proposals for modernization of flow prefabrication line for hull sections.
Źródło:
Polish Maritime Research; 2018, S 1; 134-144
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania eksperymentalne sił działających na zęby piły taśmowej w czasie cięcia różnych gatunków drewna
Experimental research of cutting forces acting on a band saw teeth during cutting various species of wood
Autorzy:
Król, R.
Taraś, A.
Powiązania:
https://bibliotekanauki.pl/articles/310873.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
piła taśmowa
pilarka taśmowa
obróbka drewna
band saw
band saw machine
wood processing
Opis:
W artykule przedstawione zostały wyniki pomiarów sił, które działają na zęby piły taśmowej podczas cięcia różnych gatunków drewna występujących w Polsce. Ostatnia zaawansowana praca, poświęcona cięciu polskich gatunków drewna na piłach taśmowych opublikowana została przez T. Orlicza w latach sześćdziesiątych ubiegłego stulecia. Obecnie brak jest publikacji zawierających podobne wyniki, zmierzone przy użyciu nowoczesnych metod. W artykule autor przedstawił wyniki pomiarów sił skrawania uzyskane przy użyciu oryginalnego urządzenia składającego się z czujników foliowych, elektronicznego układu Arduino oraz laptopa. Informacje o siłach podczas cięcia drewna są potrzebne przy projektowaniu pił taśmowych i pilarek taśmowych. Znany jest przypadek firmy produkującej piły taśmowe, która zdecydowała się na eksport swoich produktów do Chin i zanotowała straty, ponieważ chińskie drewno odznacza się innymi właściwościami fizycznymi niż gatunki krajowe.
In this paper the results of forces measurement, which act on the band saw teeth during cutting various species of Polish wood was discussed. Since 1960, when T. Orlicz published results of cutting forces measurement, there haven’t been published any comprehensive work which present the similar data measured with modern equipment for Polish species of wood. In this paper, author shows the results which was measured by the original device consisted of film sensors, Arduino electronic board programmed by the author for the film sensor signal sampling and notebook. Knowledge about forces, which act on the band saw teeth during cutting chosen species of wood is necessary in the design of band saw blades and band saw machines. It was known case, when Polish company took in the export of band saws for China and recorded a loss, because the Chinese wood is characterized by different physical properties than domestic species.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 12; 1092-1096
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Wood Processing Safety in the Production Organization
Autorzy:
Kotus, M.
Koloman, K.
Hudec, M.
Powiązania:
https://bibliotekanauki.pl/articles/2065027.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
hazard
threat
risk
circular saw
Opis:
Occupational health and safety legislation imposes an obligation on the production organization to regularly and comprehensibly inform employees of the dangers, threats and risks involved. In the paper, we assessed the basic requirements of safety in the wood processing workshop on the forming disc saw. Deficiencies in non-compliance with security regulations were determined from the check list analysis (CLA). The safety assessment was performed using the extended point method, where we determined the value of the risk measure. When working on a saw blade, the risk cannot be accepted and safety precautions have to be proposed. For the production organization, we have proposed remedial measures and a safety card to be considered before working on forming disc saw. All the measures proposed by us were accepted and implemented by the production organization. Applying and observing safety measures can prevent the occurrence of an occupational injury or damage to the health of the worker.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 727--737
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measuring the dynamic twisting behaviour of saw blades in the kerf during the sawing process
Autorzy:
Albrecht, D.
Stehle, T.
Powiązania:
https://bibliotekanauki.pl/articles/100185.pdf
Data publikacji:
2016
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
band saw
cutting
vibration
measurement
Opis:
Vibrations may occur in all kinds of production processes. Particularly the kinematics of band saws with their thin and unstable structure of the saw blade causes high vibrations, which generate, on the one hand, a high acoustic level. On the other hand, the impact can be seen as grooves on the surface of the workpiece. To optimize the sawing process, the vibration behaviour of the saw blades is investigated by experiment on a test band saw with a contactless measuring system during the sawing process of steel. The focus here is on the twisting of the saw blade in the kerf. The sawing parameters of cutting speed and feed rate are varied here in a wide range to examine the stability of the process and the occurring displacement of the saw blade. The results of this investigation indicate that the saw blade in the kerf shows a characteristic behaviour, which is subject to the cutting parameters. It is obvious that the performance of the process depends not only on the cutting process but also on the tensile state of the saw blade affected by the design of the saw frame, the saw blade guides and the saw blade tension. The results obtained are able to support future developments and identify an optimization potential for the sawing process.
Źródło:
Journal of Machine Engineering; 2016, 16, 3; 75-87
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of kerf height on noise emission level in the internal combustion chain saw Stihl MS 211 and the electric chain saw Stihl E 180C during cross cutting of wood
Wpływ wysokości rzazu na poziom emisji hałasu pilarki spalinowej Stihl MS 211 i pilarki elektrycznej Stihl E 180C podczas przerzynki drewna
Autorzy:
Skarzynski, J.
Lipinski, R.
Powiązania:
https://bibliotekanauki.pl/articles/56292.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
noise emission
emission level
internal combustion chain saw
electrical chain saw
cross-cutting
wood cutting
Opis:
The effect of kerf height on noise emission level in the internal combustion and electric chain saws during cross cutting of wood is described. There were investigated the two Stihl chain saw models of similar power and kerb weight. To differentiate cross cutting methods, the lower and upper sides of the guide bar were used. The obtained results of measurements were subjected to statistical analysis; it allowed for precise determination of dependence between the kerf height and noise emitted by investigated chain saws. Significant dependences between investigated features were found for both the chain saws during cross cutting with the lower side of guide bar; therefore, the kerf height affects significantly the level of emitted noise.
Wpływ wysokości rzazu na poziom emisji hałasu pilarki spalinowej Stihl MS 211 i pilarki elektrycznej Stihl E 180C podczas przerzynki drewna. Dokonano analizy zagrożenia hałasem występującym podczas przerzynki drewna pilarką spalinową i elektryczną. W badaniach wykorzystane zostały dwa modele pilarek firmy Stihl o zbliżonej mocy i masie własnej narzędzia. Przerzynki dokonywano dolną jak i górną stroną prowadnicy. Pomiary hałasu zostały przeprowadzone w warunkach laboratoryjnych, wykorzystując do przerzynki drewno sosnowe o różnych wysokościach rzazu. W przypadku cięcia dolną stroną prowadnicy uzyskano istotne zależności między badanymi cechami dla obydwu pilarek, czyli wysokość rzazu ma istotny wpływ na poziom emitowanego hałasu.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Agriculture; 2013, 62 Agric.Forest Eng.
0208-5712
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Agriculture
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CHANGES IN THE LEVEL OF REGIONAL DEVELOPMENT OF ALBANIA AND VOIVODSHIPS IN POLAND IN 2010-2017
Autorzy:
Kozak, Sylwester
Muça, Etleva
Powiązania:
https://bibliotekanauki.pl/articles/1818404.pdf
Data publikacji:
2020-04-10
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
regional development
MCDA procedure
SAW method
Opis:
The article presents the results of research on changes in the level of regional development in Albania and in all voivodships (regions) in Poland in 2010-2017. Annual data comes from national statistical offices. The level of regional development was determined by the multi-criteria decision analysis method - SAW (the Simple Additive Weighting) and includes two social and six economic criteria. The obtained results indicate that in the whole analyzed period the level of regional development in Albania was lower than in all regions in Poland. However, it achieved the highest increase in the studied group, among others thanks to improving the demographic situation, increasing entrepreneurship and improving the quality of the market. The Mazowieckie, Pomorskie and Wielkopolskie voivodships were characterized by the highest level of development throughout the entire period as a consequence of a good demographic situation, increased entrepreneurship and high GDP dynamics. Negative population growth and an increase in unemployment meant that the Lubelskie and Warmińsko-Mazurskie voivodships are characterized by the lowest level of regional development in Poland. Faster improvement of the situation in more developed regions contributed to the increase of disparity in the socio-economic development of regions in Poland.
Źródło:
Zeszyty Naukowe Uniwersytetu Przyrodniczo-Humanistycznego w Siedlcach; 2019, 50, 123; 37-44
2082-5501
Pojawia się w:
Zeszyty Naukowe Uniwersytetu Przyrodniczo-Humanistycznego w Siedlcach
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Historical Metal works named Warsaw in Iran
Autorzy:
KARAMIAN, Gholamreza
Powiązania:
https://bibliotekanauki.pl/articles/1016296.pdf
Data publikacji:
2020-10-17
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
Borujerd
metalwork
War-saw
Iran
Polska
Opis:
Since long times ago, the artists of Lorestan, have been earning their livelihood through making various types of handicraft a valuable art piece deeply rooted in the province’s history called nickel silver crafts. In Farsi, varsho is actually the word ‘War-saw’. What is the reason for such labeling of these works of art in the Qajar and Pahlavi periods in Iran? Lorestan artists in Borujerd town created such magnificent art at that time. We still don’t know the reason for this naming, but one thing is clear, such metalwork is part of the history of art in both Poland and Iran.
Źródło:
Historia i Świat; 2020, 9; 205-218
2299-2464
Pojawia się w:
Historia i Świat
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of saw chain type and wood species on the kickback angle of a chainsaw
Autorzy:
Kaliniewicz, Z.
Maleszewski, Ł.
Krzysiak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/297817.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
chainsaw
kickback
saw chain
wood
correlation
Opis:
Wood processing operations, in particular debarking, can pose a significant hazard for the chainsaw operator when performed without due caution. The most common hazards with potentially fatal consequences include kickback which occurs when the chainsaw’s guide bar is violently thrown backwards towards the operator. The aim of this study was to determine the influence of wood species and different saw chain brands on the kickback angle of a chainsaw. The kickback angle of a combustion chainsaw was analyzed in a self-designed test stand with the use of a digital level gauge accurate to 0.1°. Four differently priced saw chain brands, including two standard chains and two chains with anti-kickback features, were evaluated. Kickback was analyzed on five wood species (pine, spruce, birch, alder and oak) at three engine speeds (50%, 75% and 100% of maximum rotational speed). Kickback was significantly determined by wood species and saw chain type, and it was less influenced by the rotational speed of the chainsaw engine. The average kickback angle was largest in alder and smallest in spruce. The analyzed parameter was not always reduced by saw chains with anti-kickback features. In some cases, low-priced saw chains with anti-kickback features offer less protection than more expensive standard chains. Chainsaw buyers should decide whether it is worthwhile to compromise on safety in exchange for a lower price.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2018, 21(4); 323-334
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review of Surface Acoustic Wave Sensors for the Detection and Identification of Toxic Environmental Gases/Vapours
Autorzy:
Panneerselvam, G.
Thirumal, V.
Pandya, H. M.
Powiązania:
https://bibliotekanauki.pl/articles/176789.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
toxic gases
SAW
surface acoustic wave
SAW sensors
E-Nose
electronic nose
gas sensors
selective coating
Opis:
Detection and identification of toxic environmental gases have assumed paramount importance precisely in the defense, industrial and civilian security sector. Numerous methods have been developed for the sensing of toxic gases in the environment ever since surface acoustic wave (SAW) technology came into existence. Such SAW sensors called electronic nose (E-Nose) sensor use the frequency response of a delay line/resonator. SAW device is focused and given importance. The selective coating between input and output interdigital transducers (IDTs) in the SAW device is responsible for corresponding changes in operating frequency of the device for a specific gas/vapour absorbed from the environment. A suitable combination of well-designed SAW delay lines with selective coatings not only help to improve sensor sensitivity and selectivity but also leads to the minimization of false frequency alarms in the E-Nose sensor. This article presents a comprehensive review of design, development, simulation and modelling of a SAW sensor for potential sensing of toxic environmental gases.
Źródło:
Archives of Acoustics; 2018, 43, 3; 357-367
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metoda SAW z przedziałowymi danymi i wagami uzyskanymi za pomocą przedziałowej entropii Shannona
The SAW method with interval data and the weights obtained using the interval Shannon’s entropy
Autorzy:
Kacprzak, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/591032.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Entropia Shannona
Liczby przedziałowe
Metoda SAW
Wagi obiektywne
Interval numbers
Objective weights
SAW method
Shannon entropy
Opis:
Celem artykułu jest rozszerzenie metody SAW na problemy podejmowania decyzji z danymi przedziałowymi. Pozwala to na modelowanie problemów rzeczywistych, w których nie można dokładnie zmierzyć danych. Zaproponowana metoda wykorzystuje entropię Shannona, która jest jedną z metod wyznaczania obiektywnych wag kryteriów. Pozwala to uniknąć subiektywizmu i nieprecyzyjności spowodowanej niekompletną wiedzą, osądami, opiniami i preferencjami decydentów.
The aim of the paper is to extend the SAW method for decision-making problems with interval data. This allows modeling real life problems in which data cannot be measured precisely. Moreover, proposed method uses Shannon’s entropy which is one of the methods for finding objective weights of criteria. It allows to avoid subjectivity and imprecision caused by incomplete knowledge, judgments, opinions and preferences of decision makers.
Źródło:
Studia Ekonomiczne; 2018, 348; 144-155
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 77

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