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Tytuł:
A method for estimating the probability distribution of the lifetime for new technical equipment based on expert judgement
Autorzy:
Andrzejczak, Karol
Bukowski, Lech
Powiązania:
https://bibliotekanauki.pl/articles/2038033.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
uncertainty
expert elicitation of lifetime
quantile function
Weibull distribution
Opis:
Managing the exploitation of technical equipment under conditions of uncertainty requires the use of probabilistic prediction models in the form of probability distributions of the lifetime of these objects. The parameters of these distributions are estimated with the use of statistical methods based on historical data about actual realizations of the lifetime of examined objects. However, when completely new solutions are introduced into service, such data are not available and the only possible method for the initial assessment of the expected lifetime of technical objects is expert methods. The aim of the study is to present a method for estimating the probability distribution of the lifetime for new technical facilities based on expert assessments of three parameters characterizing the expected lifetime of these objects. The method is based on a subjective Bayesian approach to the problem of randomness and integrated with models of classical probability theory. Due to its wide application in the field of maintenance of machinery and technical equipment, a Weibull model is proposed, and its possible practical applications are shown. A new method of expert elicitation of probabilities for any continuous random variable is developed. A general procedure for the application of this method is proposed and the individual steps of its implementation are discussed, as well as the mathematical models necessary for the estimation of the parameters of the probability distribution are presented. A practical example of the application of the developed method on specific numerical values is also presented.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 4; 757-769
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bridging Means-End Chain theory and self-concept through hybrid elicitation technique
Integracja teorii środków-celów i obrazu siebie — ujęcie hybrydowe
Autorzy:
Borgardt, Elena
Sagan, Adam
Powiązania:
https://bibliotekanauki.pl/articles/2077876.pdf
Data publikacji:
2021-10-31
Wydawca:
Polskie Wydawnictwo Ekonomiczne
Tematy:
laddering
Means-End Chain
self-concept
typology of consumer value
Zaltman Metaphor Elicitation Technique
metody drabinkowe
łańcuchy środków-celów
koncepcja jaźni
typologia wartości konsumenckich
technika ZMET
Opis:
This paper aims to examine the relationship between the Means-End Chain (MEC) theory and self-concept based on the Typology of Consumer Value through a hybrid elicitation technique. The contribution of this study is its sequential exploratory strategy of mixed-method design. The data were obtained from eighteen highly involved participants in Focus-Group (FG) discussions through the hybrid elicitation technique. First, a hierarchical value map is constructed using LadderUX software based on the responses. Second, a quantitative analysis with the help of RStudio software is conducted. Finally, an agglomerated matrix revealing the interconnections between self-concept and MEC is presented. The study provides evidence for a relationship between MEC and self-concept and redesigns the existing MEC approach's interpretation. This paper's originality lies in enlarging MEC theory's latitude by integrating self concept as a micro-component. Thus, the MEC model becomes enhanced with individualism, symbolism, and experiential aspects. This approach provides a new consumer-centric perspective on existing MEC and opens new avenues for further research.
Celem artykułu jest zbadanie związku pomiędzy teorią łańcuchów środków-celów a koncepcją self opartą na typologii wartości konsumenckiej za pomocą hybrydowej techniki gromadzenia danych. W badaniu wykorzystano sekwencyjne, eksploracyjne podejście badań mieszanych. Dane uzyskano w drodze zastosowania zogniskowanego wywiadu grupowego od osiemnastu zaangażowanych użytkowników smartfonów. W pierwszym etapie wyodrębniono przy użyciu oprogramowania LadderUX hierarchiczną mapę wartości konsumenckich. W drugim etapie zebrane wyniki zostały poddane analizie ilościowej z wykorzystaniem oprogramowania RStudio. W efekcie przeprowadzonych analiz uzyskano macierz zależności między wymiarami obrazu siebie a strukturą łańcuchów środków-celów. Wyniki badania pozwalają na wskazanie zależności pomiędzy łańcuchami środków-celów a obrazem self konsumenta oraz umożliwiają rozszerzenie dotychczasowej koncepcji środków-celów o aspekty indywidualne i symboliczne wynikające z autowizerunku konsumenta.
Źródło:
Marketing i Rynek; 2021, 10; 3-16
1231-7853
Pojawia się w:
Marketing i Rynek
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expert judgement-based tuning of the system reliability neural network
Autorzy:
Brandowski, A.
Nguyen, H.
Frąckowiak, W.
Powiązania:
https://bibliotekanauki.pl/articles/258506.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
neural network
reliability
elicitation
parameter
correlation
Opis:
The neural network tuning procedure applied to reliability analyses of anthrop technical systems, based on judgements of experts - experienced operating practicians. Numerical and linguistic elicitation of the judgements, analyses of the network input and output data correlation and of the AHP method processing deviation are presented. Example of data elicitation and correlation analysis of a reliability arrangement of the seagoing ship propulsion system are included to the article.
Źródło:
Polish Maritime Research; 2014, 1; 28-34
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Funkcja uzdrowiskowa i dziedzictwo kulturowe jako katalizatory rozwoju małych miast
Health resort function and cultural landscape as catalysts for a town’s development
Autorzy:
Cieślak, Adriana
Powiązania:
https://bibliotekanauki.pl/articles/447188.pdf
Data publikacji:
2014-09
Wydawca:
Instytut Rozwoju Miast
Tematy:
małe miasto
uzdrowisko
aktywizacja
dziedzictwo kulturowe
small town
health resort (spa)
activation (elicitation)
cultural heritage
Opis:
Artykuł porusza problematykę aktywizacji prouzdrowiskowej historycznych obszarów małomiejskich, odznaczających się wyraźnie ukształtowanym krajobrazem kulturowym. Istotą problemu jest rola małego miasta w rozwoju nowego modelu funkcji uzdrowiskowej, a także próba wstępnej analizy przekształceń, jakim podlegają zasoby kulturowe na rzecz podnoszenia atrakcyjności miasteczka, awszczególności wpływ funkcji uzdrowiskowej na strukturę historycznego centrum. Tak postawiony problem należy także postrzegać jako punkt wyjścia dla dalszych badań zmierzających do opracowania rozwiązań, wspomagających ochronę krajobrazu i tożsamości miasta, w warunkach współczesnych przekształceń prouzdrowiskowych. Badania, prowadzone metodą indukcyjną, objęły polskie miasta uzdrowiskowe omiejsko-zdrojowej strukturze, w których obszary miejskie ukształtowały się przed rozwojem funkcji zdrojowych. Analizie poddano cechy przestrzenne małego miasta pod kątem ich przydatności dla potrzeb funkcji uzdrowiskowej, charakter relacji funkcjonalno-przestrzennych pomiędzy obszarem staromiejskim i zespołem zdrojowym, a także znaczenie tożsamości kulturowej miasta dla budowania atrakcyjności uzdrowiska. Przeprowadzone badania pozwalają stwierdzić, że aktywizacja funkcji uzdrowiskowej, ukierunkowanej na profilaktykę i zintegrowanej z turystyką kulturową jawi się jako szansa na rewitalizację zespołów miejskich towarzyszących założeniom zdrojowym. Miasta uzdrowiskowe, wykorzystując swój potencjał kulturowy, mają szansę na realizację innowacyjnych produktów turystycznych, które mogą przyczynić się do ich rozwoju gospodarczego i społecznego.
The article discusses the problem of activation of spa functions in the historic areas of towns, which have clearly shaped the cultural landscape. The essence of the problem is the role of a small town in the development of a new model of spa function and it is an attempt to identify ways to use cultural resources to the achievement of competitive advantage of the town, and in particular to determine the impact of the spa functions on the structure of the historical centre. This issue should also be seen as a starting point for further research to develop solutions that will help protect the identity of these towns. Inductive research concerned the Polish spa towns with a complex structure in which urban areas were created before the development of the spa. Analyses include the spatial characteristics of a town considered in terms of their suitability for the function of the spa, the nature of functional and spatial relationships between the areas of the old town and spa, as well as the importance of the cultural identity of the town to build the attractiveness of the spa. The study allows us to conclude that the activation of spa function, which is integrated with cultural tourism, is seen as an opportunity to revitalize the spa towns. In addition, the spa towns which use its cultural potential can realise innovative investments that can become an important element of economic and social development.
Źródło:
Problemy Rozwoju Miast; 2014, 3; 21-28
1733-2435
Pojawia się w:
Problemy Rozwoju Miast
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of elicitation with sodium silicate and iron chelate on the composition and quality of fatty acids in buckwheat sprouts
Autorzy:
Debski, H.
Horbowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/1192811.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
common buckwheat
sprouts
elicitation
iron chelate
sodium silicate
fatty acids
Opis:
In laboratory experiments, the impact of elicitation with a mixture of sodium silicate and iron chelate or sodium silicate alone on fatty acid composition in sprouts of common buckwheat (Fagopyrum esculentum Moench) has been examined. Buckwheat seeds and then sprouts were soaked for 0.5 h each day over six days in an aqueous solution of the mentioned elicitors. The sprouts were grown in the light regime of 16/8 h, day/night. After seven days of germination (sprouting), the composition of fatty acids in freeze-dried and powdered sprout tissues was analyzed by gas chromatography. The results showed significant changes in the composition of fatty acids in sprouts in comparison to buckwheat seeds. The results indicate that the germination of buckwheat seeds leads to an increase in myristic (C14:0), palmitic (C16:0), stearic (C18:0) and behenic (C20:0) acid in sprouts, although the use of the elicitors, especially sodium silicate, inhibited this tendency. The sprouts of common buckwheat contained almost twice as much α-linolenic acid (C18:3) as the seeds did, and slightly less linoleic acid (C18:2). Moreover, the use of elicitors favored an increased accumulation of α-C18:3. As a result, germination drastically reduced the C18:2/a-C18:3 ratio by about 4 times, which may have a positive health effect. The buckwheat sprouts contained traces of eicosatrienoic (C20:3), eicosatetraenoic (C20:4), docosaenoic (C22:1) and docosadienoic (C22:2) acids, while their content in the seeds was between 0.6 and 2.4%. The buckwheat sprouts had a higher atherogenic (AI) and thrombogenic index (TI) and a lower health index (HI) than seeds did, but the use of elicitors inhibited this tendency.
Źródło:
Journal of Elementology; 2021, 26, 1; 87-96
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rozmowy o fotografiach
Talks about photography
Autorzy:
Fereński, Piotr Jakub
Powiązania:
https://bibliotekanauki.pl/articles/636776.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
photo elicitation
photography
place of memory
Opis:
The author reflects on the benefits that can be brought to the cultural studies of collective memory with the use of visual materials (pictures, images, photos), especially combined with individual interviews. As an example he uses the case of Augustyn Czyżowicz’s photographic archive
Źródło:
Przegląd Kulturoznawczy; 2012, 2(12); 153-162
1895-975X
2084-3860
Pojawia się w:
Przegląd Kulturoznawczy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rola technologii informacyjno-komunikacyjnych w aktywizowaniu osób z niepełnosprawnościami
The role of information and communication technologies in activating disabled people
Autorzy:
Garwol, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/446138.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Rzeszowski
Tematy:
niepełnosprawność
aktywizacja
internet
komputer
ICT
disability
elicitation
computer
Opis:
Artykuł omawia rolę technologii informacyjno-komunikacyjnych w procesie aktywizowania osób niepełnosprawnych na płaszczyźnie zawodowej oraz społecznej. Po przytoczeniu definicji związanych z niepełnosprawnością zostały przedstawione dane statystyczne na temat populacji osób niepełnosprawnych w Polsce, z uwzględnieniem stopnia oraz rodzaju niepełnosprawności. W dalszej kolejności omówiono wybrane programy pomocowe, zwłaszcza z obszaru ICT (techno-logie informacyjno-komunikacyjne) skierowane do osób niepełnosprawnych oraz opisano rolę technologii cyfrowych w procesie aktywizacji osób z niepełnosprawnością umysłową. W ramach podsumowania podano możliwości wsparcia finansowego, na jakie mogą liczyć osoby niepełnosprawne, które zdecydowały się na aktywność zawodową prowadząc własną dzia-łalność gospodarczą oraz przedstawiono skalę dofinansowania, na jaką może liczyć pracodawca taką osobę zatrudniając.
The article discusses the role of information and communication technologies in the process of activating disabled people on a professional and social level. After citing definitions related to disability, statistical data on the disabled population in Poland were presented, taking into account the degree and type of disability. Subsequently, selected assistance programs were discussed, especially in the area of ICT, which were addressed to the disable. Moreover the role of digital technologies in the process of activating people with intellectual disabilities was described. In a summary, there were described the possibilities of financial support for disabled who have decided on professional activity which means running their own business. Also it was pre-sented the scale of co-financing that entrepreneurs can gain when they employ disable worker.
Źródło:
Dydaktyka informatyki; 2019, 14; 30-41
2083-3156
Pojawia się w:
Dydaktyka informatyki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania wizualne na rozdrozu.
VISUAL RESEARCH AT THE CROSSROADS.
Autorzy:
Grady, John
Powiązania:
https://bibliotekanauki.pl/articles/1373929.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
COMMUNICATING RESEARCH FINDINGS
INTERPRETATION
METHODOLOGY
PHOTO ELICITATION
PHOTOGRAPHY
VIDEO DATA
VISUAL DATA
VISUAL METHODS
Opis:
The author argues that visual methods are at the crossroads. They can remain in a niche or move into the mainstream by also addressing all people using visual materials. In the social sciences, visual methods encompass photography, video, and graphic representations. With respect to the visual, one has to note that all interpretations that are ontologically dependent on photography require more interpretation. 'Looking at' means 'being framed by,' and this means also the picture maker who is also considered to be a viewer. For the social sciences, pictures provide us with personal insights as well as with a personal record of spatial and social relationships. On this basis one may raise questions like 'how pattern variations occur over time?', 'how are social processes organized?', or 'what is the role of emotion in social life?' These are issues, the author continues, to which visual data can contribute. It may be added that methodological discussion should, however, besides the areas of visual data generation, analysis and interpretation also include solutions for the problem of communicating research findings. Some of these questions can be approached via controlled photo-observation, photo-elicitation techniques and imagery provided by the subjects themselves. Finally, the author turns to the question of what remains to be done? Here, he delineates three main areas: (1) evaluating the theoretical and conceptual basis of visual research, (2) creating public databases for the development and testing of theories, (3) defining 'best practices' for visual research.
Źródło:
Przegląd Socjologii Jakościowej; 2009, 5, 2; 82-117
1733-8069
Pojawia się w:
Przegląd Socjologii Jakościowej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methyl jasmonate stimulates biosynthesis of 2-phenylethylamine, phenylacetic acid and 2-phenylethanol in seedlings of common buckwheat
Autorzy:
Horbowicz, Marcin
Wiczkowski, Wiesław
Sawicki, Tomasz
Szawara-Nowak, Dorota
Sytykiewicz, Hubert
Mitrus, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1039097.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
elicitation
Fagopyrum esculentum
phenylacetic acid
2-phenylethanol
2-phenylethylamine
Opis:
Methyl jasmonate has a strong effect on secondary metabolizm in plants, by stimulating the biosynthesis a number of phenolic compounds and alkaloids. Common buckwheat (Fagopyrum esculentum Moench) is an important source of biologically active compounds. This research focuses on the detection and quantification of 2-phenylethylamine and its possible metabolites in the cotyledons, hypocotyl and roots of common buckwheat seedlings treated with methyl jasmonate. In cotyledons of buckwheat sprouts, only traces of 2-phenylethylamine were found, while in the hypocotyl and roots its concentration was about 150 and 1000-times higher, respectively. Treatment with methyl jasmonate resulted in a 4-fold increase of the 2-phenylethylamine level in the cotyledons of 7-day buckwheat seedlings, and an 11-fold and 5-fold increase in hypocotyl and roots, respectively. Methyl jasmonate treatment led also to about 4-fold increase of phenylacetic acid content in all examined seedling organs, but did not affect the 2-phenylethanol level in cotyledons, and slightly enhanced in hypocotyl and roots. It has been suggested that 2-phenylethylamine is a substrate for the biosynthesis of phenylacetic acid and 2-phenylethanol, as well as cinnamoyl 2-phenethylamide. In organs of buckwheat seedling treated with methyl jasmonate, higher amounts of aromatic amino acid transaminase mRNA were found. The enzyme can be involved in the synthesis of phenylpyruvic acid, but the presence of this compound could not be confirmed in any of the examined organs of common buckwheat seedling.
Źródło:
Acta Biochimica Polonica; 2015, 62, 2; 235-240
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparing the Crisp and Fuzzy Approaches to Modelling Preferences Towards Health States
Autorzy:
Kamiński, Bogumił
Jakubczyk, Michał
Powiązania:
https://bibliotekanauki.pl/articles/578540.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Discrete choice experiment
Fuzzy modelling
Health-related quality of life
Preference elicitation
Eksperyment z dyskretnym wyborem
Jakość życia związana ze zdrowiem
Modelowanie rozmyte
Opis:
Understanding societal preferences towards health is vital in public decisions on nancing health technologies. Thought experiments in which respondents choose between health states are used to understand the importance of individual criteria. Competing models of preference structure can be compared by their ability to explain empirical observations. One of the key challenges when constructing such models is that they have to aggregate preferences dened in multiple-criteria space. In the present paper, we test whether treating the impact of health worsening (dened using EQ-5D-5L descriptive system, i.e. decomposing health status in ve criteria) as a fuzzy concept can improve the model fit. To test if fuzzy approach to multiple-criteria preferences aggregation is valid, we compare a standard, crisp model (SM) with two models using fuzzy sets (JKL, previously proposed in the literature; and FMN introduced here). We nd FMN better than SM, and SM better than JKL. Anxiety/depression and pain/discomfort seem to weigh most in preferences. According to FMN, self-care and usual activities are associated with largest imprecision in preferences. The respondents are susceptible to framing eects when time unit is changed: e.g. measuring the duration in days results in short intervals mattering more than when expressed as weeks. We conclude that the fuzzy-based framework is promising, but requires careful work on the exact specication.
Źródło:
Multiple Criteria Decision Making; 2017, 12; 75-89
2084-1531
Pojawia się w:
Multiple Criteria Decision Making
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A real interlocutor in elicitation techniques: does it matter?
Autorzy:
Kanik, Mehmet
Powiązania:
https://bibliotekanauki.pl/articles/620643.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Elicitation techniques
DCT
interlocutor
email
Opis:
This study investigates whether adding a real interlocutor to elicitation techniques would result in requests that are different from those gathered through versions with a hypothetical interlocutor. For this purpose, a written method is chosen. One group of 40 students receive a written discourse completion task (DCT) with two situations that ask respondents to write emails on paper to an imaginary professor. This data is compared to earlier data collected from 27 students, where a group of students composed emails for the same situations and sent them electronically to their professor. Thus, while one group write emails to a hypothetical professor, the other group is provided with a real interlocutor. The data is analyzed for the inclusion of opening and closing moves, density, the level of directness and the choices of moves in the opening and closing sequences, as well as the choices of supportive moves. Results indicate significant differences in (the) level of directness, and the choices of moves in the opening and closing sequences. The other analyses do not show significant differences. The findings reveal that the addition of a real interlocutor does make a difference, albeit not a drastic one. The results have implications for the design of elicitation techniques that aim to simulate real life.
Źródło:
Research in Language; 2016, 14, 4
1731-7533
Pojawia się w:
Research in Language
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methyl jasmonate, yeast extract and sucrose stimulate phenolic acids accumulation in Eryngium planum L. shoot cultures
Autorzy:
Kikowska, Małgorzata
Kędziora, Izabela
Krawczyk, Aldona
Thiem, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/1039089.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
chlorogenic acid
elicitation
flat sea holly
in vitro shoot culture
rosmarinic acid
Opis:
Eryngium planum L. has been reported as a medicinal plant used in traditional medicine in Europe. The tissue cultures may be an alternative source of the biomass rich in desired bioactive compounds. The purpose of this study was to investigate the influence of the biotechnological techniques on the selected phenolic acids accumulation in the agitated shoot cultures of E. planum. Qualitative and quantitative analyses of those compounds in 50% aqueous - methanolic extracts from the biomass were conducted by applying the HPLC method. Methyl jasmonate (MeJA), yeast extract (YE) and sucrose (Suc) stimulated accumulation of the phenolic acids: rosmarinic (RA), chlorogenic (CGA) and caffeic (CA) in in vitro shoot cultures. Cultivation of shoots in liquid MS media supplemented with 1.0 mg L-1 6-benzyladenine and 0.1 mg L-1 indole-3-acetic acid in the presence of 100 µM MeJA for 48h was an optimum condition of elicitation and resulted in approximately 4.5-fold increased content of RA + CGA + CA in plant material compared to the control (19.795 mg g-1 DW, 4.36 mg g-1 DW, respectively). The results provide the first evidence that the selected phenolic acids can be synthesized in elicited shoot cultures of flat sea holly in higher amount than in untreated shoots.
Źródło:
Acta Biochimica Polonica; 2015, 62, 2; 197-200
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of methyl jasmonate on ginsenoside biosynthesis in suspension cultures of Panax quinquefolium L.
Autorzy:
Kochan, Ewa
Caban, Sylwia
Szymańska, Grażyna
Szymczyk, Piotr
Lipert, Anna
Kwiatkowski, Paweł
Sienkiewicz, Monika
Powiązania:
https://bibliotekanauki.pl/articles/763879.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Panax quinquefolium suspension culture, methyl jasmonate, ginsenosides, elicitation
Opis:
Panax quinquefolium L., belonging to the Araliaceae family, along with P. ginseng is one of the well-known species of ginseng. Multidirectional pharmacological action of this plant is attributed to triterpene saponins called ginsenosides. Pharmacopoeial raw material are roots obtained from the field crops which are time-consuming and require expensive agrotechnical procedures. Therefore, the new sources of ginseng biomass are sought such as in vitro suspension cultures. P. quinquefolium L. cell cultures, treated with the elicitation of methyl jasmonate (MJ) in concentration 50 and 250 μmol L-1, synthesize more ginsenosides than control cultures. The highest increase (2.2-fold) of all examined compounds was noted using 250 μmol L-1 MJ. In this condition, the predominantly quantitative metabolite was Rb1 ginsenoside belonging to protopanaxadiol derivatives.
Źródło:
Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia; 2017, 72, 1
2083-3563
0066-2232
Pojawia się w:
Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How to research the concept of national identity with child respondents in museum research
Autorzy:
Kolaříková, Veronika
Powiązania:
https://bibliotekanauki.pl/articles/2170090.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
national identity
children as respondents
museum research
photo-elicitation techniques
tożsamość narodowa
dzieci jako respondenci
badania muzealne
techniki photo-elicitation
Opis:
Museums have been closely linked to national identity since the 19th century. Currently, museums have to cope with the ways they present themselves to visitors properly. Therefore, national identity in a museum has become the centre of research attention. Children are a large group of visitors who come into contact with the national narrative in museums. Involving children in the research of the concept of national identity constructed in the museum can bring many interesting findings. However, research with children is difficult. Especially for beginning researchers or museum staff, who do not have in-depth experience with qualitative research. Thus, the aim of the study is to present possible ways of researching national identity with children. Attention will be drawn to the discussion of which variables and which data collection techniques are possible to examine national identity and it’s concept with children.
Źródło:
Opuscula Musealia; 2021, 28; 57-76
0239-9989
2084-3852
Pojawia się w:
Opuscula Musealia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Data analysis and processing for the system reliability neural network based on expert judgment
Autorzy:
Nguyen, H.
Powiązania:
https://bibliotekanauki.pl/articles/246332.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
artificial neural network
reliability
elicitation
AHP method
expert judgment
data correlation
Opis:
The article presents a data analysis and processing for tuning artificial neural network (ANN) of the anthrop technical system reliability, based on the opinions of experts. In general, the system reliability parameters are functions of operands – physical values – like time to failure, time between failures, duration times of specific reliability or operational states, number of failures in a time interval (event frequencies). These values are easier to be determined by an expert – operator with long year experience – than probabilistic model parameters. It is suggested that they be used in elicitation, for example linguistic estimates of the shares of reliability system elements in the system failure frequency. The numerical – linguistic elicitation of these opinions was carried out, which turned out to be uncorrelated and not suitable for tuning the network. Data processing method was used with the appropriate adopted analytic hierarchy process (AHP) geometric scale and matrix approximation method evaluations (logarithmic least squares method). Correlation analyses were performed for received input and output data of network and error of data processing method was determined. The results are shown in the example of elicitation and data correlation analyses for tuning the reliability neural network of the ship propulsion system.
Źródło:
Journal of KONES; 2014, 21, 2; 235-242
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
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