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Wyświetlanie 1-8 z 8
Tytuł:
Preliminary investigation to estimate soil NAPL retention using parametric pedotransfer functions
Autorzy:
Hernadi, H.
Mako, A.
Powiązania:
https://bibliotekanauki.pl/articles/24805.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
pressure-saturation relationship
soil property
soil
non-aqueous phase liquid
retention
pedotransfer function
hydraulic characteristics
van Genuchten method
Opis:
Organic liquid retention of soils is a primary input variable for modelling the nonaqueous phase liquid transport and behaviour in the subsurface. In environmental and soil physical practice, it is mainly determined by scaling based on the water retention of soils or with charts of average empirical values of organic liquid retention or the fitting parameters of hydraulic functions. Predicting the fitting parameters of organic liquid retention curves with pedotransfer functions might be a promising alternative method, but this topic has only been researched to a limited extent. Thus we investigated the applicability of different hydraulic functions (3- and 4- parameter form of the van Genuchten equation and Brutsaert equation) for fitting organic liquid retention characteristics. Multivariate linear regression was used to build and develop pedotransfer functions, modelling relations between original and transformed values of basic soil properties and organic liquid retention. We attempted to generate parametric pedotransfer functions. According to our results, the applicability of hydraulic functions for fitting nonaqueous phase liquid retention curves to the experimental data was proven. The investigations gave promising results for the possibility to estimate soil nonaqueous phase liquid retention with parametric pedotransfer functions.
Źródło:
International Agrophysics; 2014, 28, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil physical properties affected by biochar addition at different plant phaenological phases. Part II
Autorzy:
Mako, A.
Barna, G.
Horel, A.
Powiązania:
https://bibliotekanauki.pl/articles/2082863.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
biochar
aggregate size distribution
hydraulic
conductivity
bulk density
Opis:
A great emphasis has been placed on biochar addition to soils to improve its physical, chemical, and biological properties in recent times in order to achieve improved crop growth and yields. The present study explored to soil physical changes through different plant growth stages caused by biochar addition to silt loam soil in a pot-experiment. Our research focused on changes in soil bulk density, aggregate size distribution, and saturated hydraulic conductivity. The soils were amended with different amounts of biochars (control with 0, BC0.5 with 0.5%, BC2.5 with 2.5%, and BC5.0 with 5.0% biochar, by weight). Capsicum annuum L. were planted at a two-four leaf stage. Soil samples were taken at 6, 10 and 12 weeks after planting. The biochar amendment resulted in a significant decrease in soil bulk density values. Soil saturated hydraulic conductivity values ranged between 5.5 and 7.9 times higher for all treatments compared to the controls.
Źródło:
International Agrophysics; 2020, 34, 1; 1-7
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil physical properties affected by biochar addition at different plant phaenological phases. Part I
Autorzy:
Horel, A.
Barna, G.
Mako, A.
Powiązania:
https://bibliotekanauki.pl/articles/2082508.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
structural stability
macro- and microaggregate stability
laser diffraction method
Opis:
Soil amendment usage can substantially modify soil structural and hydraulic properties, with the aim of improving its water, air and nutrition management along with crop growth. The purpose of the present study was to investigate the physical changes in soil through different plant growing stages caused by biochar addition to silt loam soil. This research focused on changes in structural stability, and macro- and microaggregate stability. The soils were amended with different amounts of biochar (control with 0, BC0.5 with 0.5%, BC2.5 with 2.5%, and BC5.0 with 5.0% biochar, by weight). Capsicum annuum L. were planted at a two-four leaf stage. Soil samples were taken at 6, 10 and 12 weeks after planting. The results showed increasing macroaggregate stability values with increasing biochar addition; however, higher values were also detectable in control treatments over time. Increased microaggregate stability values were observed during the plant maturing phase and the decrease, which occurred during fruit development was more pronounced. The largest microaggregate stability value was observed in the case of BC2.5 among all treatments, which corresponded better to plant growth rather than to the amount of added biochar. It was also found that the laser diffraction method is a suitable alternative technique to the sieve-pipette method for analysing biochar and biochar-amended soil particle size distribution and structure.
Źródło:
International Agrophysics; 2019, 33, 2; 255-262
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of soil texture determination using soil fraction data resulting from laser diffraction method
Autorzy:
Mako, A.
Szabo, B.
Rajkai, K.
Szabo, J.
Bakacsi, Z.
Labancz, V.
Hernadi, H.
Barna, G.
Powiązania:
https://bibliotekanauki.pl/articles/2082643.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
laser diffraction
particle-size distribution
pedotransfer function
soil texture triangle
Opis:
There are global aspirations to harmonize soil particle- size distribution data measured by the laser diffraction method and by traditional sedimentation techniques, e.g. sieve-pipette methods. The need has arisen therefore to build up a database, containing particle-size distribution values measured by the sieving and pipette method according to the Hungarian standard (sieve-pipette methods-MSZ) and the laser diffraction method according to a widespread and widely used procedure. In our current publication, 155 soil samples measured with sieve-pipette methods-MSZ and laser diffraction method (Malvern Mastersizer 2000, HydroG dispersion unit) were compared. Through the application of the usual size limits at the laser diffraction method, the clay fraction was under- and the silt fraction was overestimated compared to the sieve-pipette methods-MSZ results, and subsequently the soil texture classes were determined according to the results of both methods also differed significantly from each other. Based on our previous experience, the extension of the upper size limit of the clay fraction from 2 to 7 μm increases the comparability of sievepipette methods-MSZ and laser diffraction method, in this way the texture classes derived from the particle-size distributions were also more in accordance with each other. The difference between the results of the two kinds of particle-size distribution measurement methods could be further reduced with the pedotransfer functions presented.
Źródło:
International Agrophysics; 2019, 33, 4; 445-454
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diverging workplace innovation trajectories in the European public sector (a preliminary cross-country comparison)
Autorzy:
Makó, Csaba
Illéssy, Miklós
Borbély, András
Powiązania:
https://bibliotekanauki.pl/articles/904234.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Ekonomiczny w Krakowie, Małopolska Szkoła Administracji Publicznej
Tematy:
innovation
private/public sector
work organisation
creativity
learning organisations
Opis:
Objectives: The core aim of this paper is to improve our knowledge base on the innovation process comparing how public and private organisations can develop abilities to innovate in order to cope with the challenges created by the changing priorities of the political market, the intensification of global competition and the higher speed of the technological changes. The authors intend to identify and compare the creative/learning capabilities of the workplaces in the EU-27 countries. Research Design & Methods: In testing empirically the various types of jobs our analysis uses the data sets of the fourth (2005), fifth (2010) and sixth (2015) waves of the European Working Conditions Survey (EWCS). The EWCS is a crosssectional survey taken in every five years since 1990, organised by the European Foundation for the Improvement of Living and Working Conditions (Eurofound, Dublin). The recent editions of this survey cover more than 40,000 workers in the EU member states and in various other European countries (Eurofound, 2017). We used a cluster analysis in order to identify three clusters of jobs in Europe and their prevalence in different countries and country groups. Findings: The data from the European Working Condition Surveys (2005, 2010 and 2015) shows that in the public administration boosts creative workplaces in all countries. The ability of organisations to mobilise their internal resources into efficient and dynamic routines depends on intangible resources (e.g. creativity) and less on such traditional tangible factors such as physical or financial sources. Powering public sector innovation is inhibited by the following major factors: unfavourable institutional settings; weak innovation leadership; lack of systematic knowledge of the innovation process; and a shortage of the systematic data collection at both the EU and Member State levels. Implications & Recommendations: The increasing rate of creative jobs may speed up the implementation of the “High-Engagement Civil Services” to improve both efficiency and quality of work in the public sector. A more profound and evidence-based understanding of the innovation processes at the workplace level would allow us to exploit the full potential thereof in terms of positive impacts on both employment and job quality. Contribution & Value Added: Despite the fact that innovation studies have been at the heart of socio-economic research for decades now, relatively little attention has been paid on innovation in the public sector. This research topic has gained more importance only in the 2010s and thus there is often a lack of empirical evidence for this sector, which plays a crucial role in all developed economies as a major employer as well as the main actor shaping the regulatory environment. This article is among the first attempts aimed at giving insights into the job characteristics of public sector organisations.
Źródło:
Zarządzanie Publiczne / Public Governance; 2018, 3(45); 44-59
1898-3529
2658-1116
Pojawia się w:
Zarządzanie Publiczne / Public Governance
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Operational statistics of Kosice Airport
Autorzy:
Szabo, S.
Pilát, M.
Tobisová, A.
Makó, S.
Powiązania:
https://bibliotekanauki.pl/articles/197122.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
operational statistics
airport
scheduled passenger
and non-scheduled passenger
statystyki operacyjne
lotnisko
pasażer rozkładowy
pasażer nieregularny
Opis:
The main aim of the article is to bring the understanding of operational statistics of airports closer to readers. What is the essence of the execution and what belongs to them. For this article, we chose the Airport Kosice and present its operational statistics in a specific year. In the introduction are some business companies at the airport as well as the airport itself. The number of transported passengers as one of the most basic airport operation services is dealt with in the scheduled and non scheduled passenger transport for the chosen year. Finally, it is connected to the global overtaking operations of Kosice Airport. All of these indicators are graphically displayed for easier comprehension for the reader, the portions of the transported passengers for each selected transport segment.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2019, 102; 197-203
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the load factor on the ticket price
Autorzy:
Szabo, S.
Mako, S.
Tobisova, A.
Hanak, P.
Pilat, M.
Powiązania:
https://bibliotekanauki.pl/articles/374185.pdf
Data publikacji:
2018
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
load factor
ticket price
airline
współczynnik obciążenia
cena biletu
linia lotnicza
Opis:
The factor of the aircraft load or sometimes simply called the load factor is the rate of capacity of the airline. It is also known as the efficiency measure and is therefore the most commonly used estimate to describe the performance of the airline. Achieving high load factor is considerably important for the profitability of the airline, and it is interesting to identify factors that could influence the factors of the aircraft load. To describe the problem of load factor and airfare, we chose the Airbus A319 aircraft on the Bratislava (BTS) and Larnaca (LCA) routes. The data we used to calculate the individual indicators are based on real resources and give us a clear example of how the load factor affects the ticket price.
Źródło:
Transport Problems; 2018, 13, 3; 41-49
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lojalny skrzydłowy
Autorzy:
Brzezina, Józef Maciej (1959- ).
Powiązania:
Przegląd Sił Zbrojnych 2020, nr 2, s. 144-150
Data publikacji:
2020
Tematy:
Statki powietrzne bezzałogowe
Kratos XQ-58A Valkyrie (samolot)
Kratos UTAP-22 Mako (samolot)
Suchoj S-70 Ochotnik (samolot)
BATS (samolot)
Budowa i konstrukcje
Dane taktyczno-techniczne sprzętu wojskowego
Projekty
Prognostyka wojskowa
Artykuł z czasopisma wojskowego
Opis:
Artykuł dotyczy amerykańskiego programu "Loyal Wingman” (lojalny skrzydłowy). Program zakłada wykorzystanie rojów BSP do współpracy z maszynami załogowymi. Przedstawiono projekty bezzałogowych statków powietrznych w Stanach Zjednoczonych, Wielkiej Brytanii, Australii i Rosji.
Dostawca treści:
Bibliografia CBW
Artykuł
    Wyświetlanie 1-8 z 8

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