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Wyszukujesz frazę "fuzzy assessment" wg kryterium: Temat


Tytuł:
Quality standards implementation in maritime education and training institutions: fuzzy assessment
Standardy realizacji jakości w edukacji morskiej i instytucjach szkoleniowych: ocena rozmyta
Autorzy:
Tuljak-Suban, D.
Powiązania:
https://bibliotekanauki.pl/articles/374575.pdf
Data publikacji:
2013
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
MET institutions
quality
assessment
fuzzy assessment
CAF 2006
jakość
oszacowanie
rozmyte oceny
Opis:
Efficient organization of maritime industry is based on adequate human resources. Knowledge and skills are the results of a well organized study process and training. Since education is part of the public administration, the European Quality Management tool for the Public Sector - Common Assessment Framework (CAF) could be used, in accordance with the STCW convention requirements as a starting point to develop a model that allows quantitative assessment of the Maritime Education and Training (MET) institutions. Evaluation results and procedures are usually described qualitatively as verbal assessments that are part of a report or are summarized in statistical reports. Fuzzy reasoning permits a transition from qualitative to quantitative decision making. For this purpose, we suggest fuzzy modelling, which gives a quantitative assessment of education effectiveness. Evaluators‟ verbal assessments could be linguistic input variables of a fuzzy decision model, based on CAF recommendations and STCW convention that produces a quantitative mark of the Maritime Education and Training Institution quality
Wydajna organizacja przemysłu morskiego jest oparta na odpowiednich zasobach ludzkich. Wiedza i umiejętności są rezultatem dobrze zorganizowanego procesu nauczania oraz szkolenia. Od kiedy edukacja jest częścią administracji publicznej, narzędzie Europejskiego Zarządzania Jakością dla sektoru publicznego Powszechne Oszacowanie Struktury (CAF) może zostać użyte zgodnie z wymaganiami konwencji STCW jako punkt początkowy rozwoju modelu, który pozwoli na ocenę ilościową instytucji Morskiej Edukacji i Szkolenia (MET). Ocena rezultatów i procedur jest zwykle opisywana jakościowo jako ocena słowna, SA to części raportu lub są sumowane w raporty statystyczne. Rozmyta argumentacja zezwala na przekształcenie podejmowania decyzji jakościowych w ilościowe. Do tego celu sugerujemy modelowanie rozmyte, które daje ilościową ocenę efektywności edukacji. Ewaluatory słownej oceny mogą być lingwistycznymi zmiennymi wejściowymi dla rozmytego modelu decyzyjnego, opartymi na zaleceniach CAF i jakości instytucji szkoleniowych.
Źródło:
Transport Problems; 2013, 8, 2; 63-72
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of economic activity of the company on the base of fuzzy inference rules
Autorzy:
Chojnacki, A.
Borzęcka, H.
Powiązania:
https://bibliotekanauki.pl/articles/92954.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
fuzzy sets theory
fuzzy logic
fuzzy rule of conclusion
linguistic variables
fuzzy model of assessment
Opis:
The article presents the assessment of companies efficiency, the idea based on the fuzzy set theory and fuzzy logic. Relevant financial measures are selected by experts and auditors. Variables of the proposed fuzzy model are expressed as linguistic variables and their correlations are defined by If-Then fuzzy rules of conclusion. The theoretical modeling is then followed by numerical examples. There is further extension of model toward assessment and comparison for enterprises of different size and various business branches.
Źródło:
Studia Informatica : systems and information technology; 2009, 1(12); 33-45
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identyfikacja przepływu dwufazowego gaz-ciecz oparta na ocenie rozmytej obrazów tomograficznych 3D
Two-phase flow structure identification based on fuzzy assesment of 3D tomographical imaging
Autorzy:
Jaworski, T.
Fiderek, P.
Wajman, R.
Banasiak, R.
Powiązania:
https://bibliotekanauki.pl/articles/408592.pdf
Data publikacji:
2013
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
logika rozmyta
rozmyta ocena obrazów
przetwarzanie obrazów
obrazy przestrzenne
fuzzy logic
fuzzy image assessment
image processing
spatial images
Opis:
Prezentowany artykuł przedstawia wyniki prac nad systemem automatycznego rozpoznawania przepływów dwufazowych gaz-ciecz w rurociągach poziomych i pionowych. Opiera się on na logice rozmytej przy ocenie obrazów przestrzennych z tomografii 3D a następnie na przyporządkowaniu uzyskanych ocen do jednej z klas przepływu.
The following paper presents results of research on automated two-phase flow pattern identification, which is based on a fuzzy assessment of registered spatial images. Such images are obtained from 3D tomography reconstruction algorithms and for each a set of fuzzy-based features is calculated. Finally, acquired features are used to classify obtained image to one of flow regime structures.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2013, 3; 41-48
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Project Risk Assessment Using Fuzzy Inference System
Autorzy:
Pisz, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/503848.pdf
Data publikacji:
2011
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
project
risk
risk management
risk assessment
fuzzy sets
fuzzy numbers
Fuzzy Inference System
Opis:
The article focuses on the risk assessment of project. The risk assessment is a complexity decision making problem. The assessment risk of projects can be solved with Fuzzy Sets Theory. A Fuzzy Inference System is presented in order to risk assessment of the given project.
Źródło:
Logistics and Transport; 2011, 13, 2; 25-34
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Fuzzy Model for Assessing Risk of Occupational Safety in the Processing Industry
Autorzy:
Tadic, D.
Djapan, M.
Misita, M.
Stefanovic, M.
Milanovic, D. D.
Powiązania:
https://bibliotekanauki.pl/articles/90316.pdf
Data publikacji:
2012
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
occupational safety
risk assessment
uncertainty
fuzzy sets
Opis:
Managing occupational safety in any kind of industry, especially in processing, is very important and complex. This paper develops a new method for occupational risk assessment in the presence of uncertainties. Uncertain values of hazardous factors and consequence frequencies are described with linguistic expressions defined by a safety management team. They are modeled with fuzzy sets. Consequence severities depend on current hazardous factors, and their values are calculated with the proposed procedure. The proposed model is tested with real-life data from fruit processing firms in Central Serbia.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2012, 18, 2; 115-126
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Justification of RFID implementation. A case study of white goods manufacturer
Autorzy:
Gladysz, B.
Nalepa, K.
Santarek, K.
Powiązania:
https://bibliotekanauki.pl/articles/407105.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
technology assessment
RFID
SCOR
TOPSIS
fuzzy sets
Opis:
Radio Frequency Identification (RFID) is a rapidly emerging technology with a wide range of impact and still not fully exploited potential applications. The impact of RFID is not limited to the area of its direct application. There are many possible benefits to be gained from RFID application, but it must be preceded with careful analysis as its implementation is not always reasonable. A new method for an assessment of RFID technology was presented and explained on the case of a white goods manufacturer. There was a lack of such a method allowing for relatively quick and flexible assessment, which is important for decision makers, who do not want to become involved in very sophisticated and time-consuming analysis at the early stage of decision making. The method supports early phases of decision making related to RFID implementation. Conclusions derived from the analysis of the case study confirmed that the method applied allows for rationalizing decision making and answers whether RFID could generate strategic advantage, in which area RFID should be applied, how RFIDsupported processes will be executed and what benefits would be expected. previous papers focused only on answering specific questions from the above list, without showing a holistic approach. the approach to answer questions about execution of processes and benefits was not considered earlier at all. The paper illustrates details of using a new method of an assessment of RFID technology (ART) using a real industrial example.
Źródło:
Management and Production Engineering Review; 2017, 8, 4; 91-104
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of fuzzy inference to assessment of degree of hazard to ship power plant operator
Autorzy:
Kowalewski, T.
Podsiadło, A.
Tarełko, W.
Powiązania:
https://bibliotekanauki.pl/articles/259595.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
safety
operator
ship power plant
assessment
fuzzy inference
Opis:
This paper presents application of fuzzy logic to assessment of degree of hazard to ship power plant operator. For the assessment a system of computer-aided identification of hazardous zone within ship power plant, was used. The system’s variables representing the subject-matter knowledge in safety design area were transformed into fuzzy sets by means of appropriate linguistic variables and membership functions. The assessing of safety level of operator with the use of fuzzy inference was performed by means of an expert system programmed in the PROLOG LPA language.
Źródło:
Polish Maritime Research; 2007, 3; 7-11
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Defining of the structural robustness
Autorzy:
Woliński, S.
Powiązania:
https://bibliotekanauki.pl/articles/201962.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
structural robustness
risk assessment
fuzzy information
tolerable risk
Opis:
Different methods of quantitative assessment of structural robustness has been proposed and widely discussed in recent years. This paper starts out with an outline of the requirements and discussion of the conventional and risk based methods and measures of structural robustness. The probability and consequence analysis related to the assessment of robustness usually contains the statistical, fuzzy and fuzzy-statistical information on the basic variables and parameters. The new fuzzy-probabilistic index of robustness is presented in order to consider all types of available information about different hazards and consequences which influence robustness of a structure. The proposed framework for imprecise risk assessment by means of the frequency-consequences acceptance diagram and quantification of the robustness is illustrated through a numerical example.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 1; 137-144
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Software for Occupational Health and Safety Risk Analysis Based on a Fuzzy Model
Autorzy:
Stefanovic, M.
Tadic, D.
Djapan, M.
Macuzic, I.
Powiązania:
https://bibliotekanauki.pl/articles/90031.pdf
Data publikacji:
2012
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
risk assessment
uncertainty
fuzzy model
software simulation
occupational health and safety
Opis:
Risk and safety management are very important issues in healthcare systems. Those are complex systems with many entities, hazards and uncertainties. In such an environment, it is very hard to introduce a system for evaluating and simulating significant hazards. In this paper, we analyzed different types of hazards in healthcare systems and we introduced a new fuzzy model for evaluating and ranking hazards. Finally, we presented a developed software solution, based on the suggested fuzzy model for evaluating and monitoring risk.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2012, 18, 2; 127-136
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A methodology for rating and ranking hazards in maritime formal safety assessment using fuzzy logic
Autorzy:
Dourmas, N. G.
Nikitakos, V. N.
Lambrou, A. M.
Powiązania:
https://bibliotekanauki.pl/articles/2069600.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
decision making
formal safety assessment
hazard identification
marine safety
fuzzy logic
Opis:
Formal safety assessment of ships has attracted great attention over the last few years. This paper, following a brief review of the current status of marine safety assessment is focused on the hazards identification (HAZID) and prioritisation process. A multicriteria decision making framework, which is based on experts‟ estimation, is then proposed for hazards evaluation. Additionally in this paper many aspects of the evaluation framework are presented including the synthesis of evaluation teams, the assessment of the importance of criteria, the evaluation of the consequences of the alternative hazards and the final ranking of the hazards. The proposed methodology has the innovative feature of embodying techniques of fuzzy logic theory into the classical multicriteria decision analysis. The paper concludes by exploring the potentiality of the above methodology in providing a robust and flexible evaluation framework suitable to the characteristics of a hazard evaluation problem.
Źródło:
Journal of Polish Safety and Reliability Association; 2007, 1; 59--65
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk assessment of LNG carrier systems failure using fuzzy logic
Ocena ryzyka awarii systemów statku LNG przy pomocy logiki rozmytej
Autorzy:
Zalewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/360038.pdf
Data publikacji:
2011
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
logika rozmyta
ocena ryzyka
zbiornikowiec LNG
fuzzy logic
risk assessment
LNG carrier
Opis:
The failure data available for power, navigation, propulsion and steering systems onboard LNG carriers, during critical manoeuvres in the final harbour and berth approach phase, are often accompanied with a high degree of uncertainty. For this reason the use of conventional probabilistic risk assessment methods may not be well suited. The approach described uses fault tree analysis to calculate the fuzzy probability of systems failure. The risks associated with failure events are determined by combining their occurrence likelihood (probability) and possible consequences to produce a risk ranking.
Dane dotyczące zawodności systemów energetycznych, nawigacyjnych, napędowych i sterowych zbiornikowców LNG podczas manewrów w fazie podejścia i cumowania do nabrzeża są często obarczone dużą miarą niepewności. Z tego powodu tradycyjne, probabilistyczne metody oceny ryzyka mogą nie być w tych sytuacjach adekwatne. Zaprezentowana metoda wykorzystuje analizę drzewa niezdatności w celu wyznaczenia rozmytego prawdopodobieństwa awarii systemu. Ryzyka związane z sytuacjami awaryjnymi są kwantyfikowane na podstawie ich prawdopodobieństwa zajścia oraz możliwych skutków i kategoryzowane.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2011, 25 (97); 77-85
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatio-temporal soil quality assessment under crop rotation irrigated with treated urban wastewater using fuzzy modelling
Autorzy:
Ghaemi, M.
Astaraei, A.R.
Mahalati, M.N.
Emami, H.
Sanaeinejad, H.H.
Powiązania:
https://bibliotekanauki.pl/articles/24657.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
spatio-temporal property
soil quality
assessment
crop rotation
irrigation
urban waste water
fuzzy model
fuzzy function
treated waste water
Opis:
Quantifying soil quality is important for asses- sing soil management practices effects on spatial and temporal variability of soil quality at the field scale. We studied the pos- sibility of defining a simple and practical fuzzy soil quality index based on biological, chemical and physical indicators for assessing quality variations of soil irrigated with well water and treated urban wastewater during two experimental years. In this study 6 proper- ties considered as minimum data set were selected out of 18 soil properties as total data set using the principal component analysis. Treated urban wastewater use had greater impact on biological and chemical quality. The results showed that the studied minimum data set could be a suitable representative of total data set. Significant correlation between the fuzzy soil quality index and crop yield (R 2 = 0.72) indicated the index had high biological significance for studied area. Fuzzy soil quality index approach (R 2 = 0.99) could be effectively utilized as a tool leading to better understanding soil quality changes. This is a first trial of creation of a universal index of soil quality undertaken.
Źródło:
International Agrophysics; 2014, 28, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability assessment of wind turbine generators by fuzzy universal generating function
Autorzy:
Huang, Tudi
Xiahou, Tangfan
Li, Yan-Feng
Qian, Hua-Ming
Liu, Yu
Huang, Hong-Zhong
Powiązania:
https://bibliotekanauki.pl/articles/1841742.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
reliability assessment
double fed induction generator
multi-state system
fuzzy universal generating function
Opis:
Wind power has been widely used in the past decade because of its safety and cleanness. Double fed induction generator (DFIG), as one of the most popular wind turbine generators, suffers from degradation. Therefore, reliability assessment for this type of generator is of great significance. The DFIG can be characterized as a multi-state system (MSS) whose components have more than two states. However, due to the limited data and/or vague judgments from experts, it is difficult to obtain the accurate values of the states and thus it inevitably contains epistemic uncertainty. In this paper, the fuzzy universal generating function (FUGF) method is utilized to conduct the reliability assessment of the DFIG by describing the states using fuzzy numbers. First, the fuzzy states of the DFIG system’s components are defined and the entire system state is calculated based the system structure function. Second, all components’ states are determined as triangular fuzzy numbers (TFN) according to experts’ experiences. Finally, the reliability assessment of the DFIG based on the FUGF is conducted.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 2; 308-314
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy approach using experts’ psychological conditions to estimate the criteria importance for the assessment of innovative projects risk
Autorzy:
Deptuła, A. M.
Rudnik, K.
Powiązania:
https://bibliotekanauki.pl/articles/407147.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Fuzzy Multiple Criteria Decision Making
FMCDM
fuzzy Analytic Hierarchy Process
fuzzy AHP
group decision making
innovative project
assessment of risk
psychological aspects
process of making decision
Opis:
The difficulty of innovation risk assessment makes it necessary to use a multi-criteria analysis. Innovative projects are related to unstructured problems and the uncertainty, therefore, the use of fuzzy logic in the innovation risk assessment is analyzed. This paper proposes a method of determining the weights of criteria in order to innovation risk assessment. The weights are determined by 5 general criteria and 14 detailed criteria of innovation risk assessment. The proposed method is an extension of the fuzzy AHP method. The extension consists in taking into consideration the group decision-making approach with experts’ psychological conditions. The groups of experts have been chosen based on an elaborated form. The form makes it possible to characterize the persons within the scope of different psychological conditions. The proposed method provides objective and rational decision-making. The paper presents also a comparison of results with the fuzzy AHP method without the group decision making. The weights obtained by the proposed method are more diversified and bring out the most important criteria.
Źródło:
Management and Production Engineering Review; 2018, 9, 1; 13-23
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Real-time Risk Assessment for Aids to Navigation Using Fuzzy-FSA on Three-Dimensional Simulation System
Autorzy:
Chen, J.
Chen, T.
Shi, C.
Jia, D.
Powiązania:
https://bibliotekanauki.pl/articles/117294.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
risk assessment
Real-Time Risk Assessment
Formal Safety Assessment (FSA)
Fuzzy-FSA
Aids to Navigation (AtoN)
Three-Dimensional Simulation System
Quantitative Standard
Yangtze River Estuary
Opis:
The risk level of the Aids to Navigation (AtoNs) can reflect the ship navigation safety level in the channel to some extent. In order to appreciate the risk level of the aids to navigation (AtoNs) in a navigation channel and to provide some decision‐making suggestions for the AtoNs Maintenance and Management Department, the risk assessment index system of the AtoNs was built considering the advanced experience of IALA. Under the Formal Safety Assessment frame, taking the advantages of the fuzzy comprehensive evaluation method, the fuzzy‐FSA model of risk assessment for aids to navigation was established. The model was implemented for the assessment of aids to navigation in Shanghai area based on the aids to navigation three‐dimensional simulation system. The real‐time data were extracted from the existing information system of aids to navigation, and the real‐time risk assessment for aids to navigation of the chosen channel was performed on platform of the three‐dimensional simulation system, with the risk assessment software. Specifically, the deep‐water channel of the Yangtze River estuary was taken as an example to illustrate the general assessment procedure. The method proposed presents practical significance and application prospect on the maintenance and management of the aids to navigation.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 2; 197-203
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł

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