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Wyszukujesz frazę "modelling value" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Modelling the impact of SME lending on business value added
Autorzy:
Ivashchenko, Alla
Polishchuk, Yevheniia
Dubyna, Maksym
Smerichevskyi, Serhii
Kornyliuk, Anna
Powiązania:
https://bibliotekanauki.pl/articles/24201259.pdf
Data publikacji:
2023
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
SME
lending
value added
modelling
correlation-regression analysis
MŚP
wartość dodana
modelowanie
analiza korelacyjno-regresyjna
Opis:
The SME lending covers a list of its needs related to its day-to-day performance, fixed assets, development. Existing methods of identifying impact on economic indicators from using loans by SMEs are limited. The aim of the research is to develop a methodology which allows reveal the impact of SME lending on business value added on macroeconomic level. The methodology is based on correlation regression analysis in order to identify the level of loan influence on business development, value added in particular, due to the lack of adequate methods for SME development forecasting. The obtained results are sufficient for medium business and be used in forecasting medium business development in Ukraine. For small business model has insufficient density of the relationship between indicators, therefore, it was proposed to use additional factors as equity; liabilities and non-economic factors exemplified as the level of shadow economy.
Źródło:
Acta Innovations; 2023, 48; 5--21
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of the relationship between the SPAD values and photosynthetic pigments content in Quercus petraea and Prunus serotina leaves
Autorzy:
Bielinis, E.
Jozwiak, W.
Robakowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/41313.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
black cherry
tree
modelling
relationship
SPAD value
photosynthetic pigment
pigment content
Quercus petraea
Prunus serotina
leaf
sessile oak
chlorophyll
carotenoid
Opis:
In forest research and nursery practice there is often a need to monitor the condition and responses of trees to different stressors. Chlorophyll content in leaf is a good indicator of plant health and can be measured rapidly in many repetitions using the chlorophyll meter SPAD-502Plus. This practical tool provides the values of chlorophyll content in relative units (SPAD values), therefore it should be calibrated for each species to determine chlorophyll content in physiological units. In this study, the chlorophyll meter SPAD-502Plus was calibrated to be used for total chlorophyll (Chl), chlorophyll a (Chl a), chlorophyll b (Chl b) and carotenoids (Car) contents determination in leaves of Quercus petraea and Prunus serotina seedlings growing in different light environments. In the same leaf, SPAD values were measured with the Chl meter, and then photosynthetic pigments content (PP; chlorophyll and carotenoids) was consistently assessed using a conventional extraction method. The measurements were conducted once a month from May to November in three light treatments to obtain the widest possible range of the PP content values. To estimate total Chl content in leaves using the chlorophyll meter the quadratic polynomial functions: y = 0.0374x2 + 0.5345x + 0.5137 and y = 0.024x2 + 2.1998x – 32.7866 were obtained from the relationship between the Chl meter SPAD readings and total Chl determined spectrophotometrically for P. serotina and Q. petraea, respectively. Chl was higher under shade compared with full light regime and Car were linearly correlated with Chl. PP content was positively correlated with air temperature except for Car in P. serotina leaves. It was concluded that at the same soil conditions chlorophyll content in leaves of Q. petraea and P. serotina depended on species, light regimes and temperature of growth. The chlorophyll meter can be used as a practical tool to monitor and compare photosynthetic pigments content in leaves between tree species or populations acclimated to different environments together with a control of abiotic and biotic factors affecting pigments content and leaf optical properties.
Źródło:
Dendrobiology; 2015, 73
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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