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Wyszukujesz frazę "E62" wg kryterium: Temat


Tytuł:
Methods of forecasting VAT revenues for the state budget of Ukraine
Autorzy:
Okseniuk, Oksana
Powiązania:
https://bibliotekanauki.pl/articles/646256.pdf
Data publikacji:
2015-06
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
VAT
forecast
state budget
C53
E62
H25
Opis:
VAT is the main indirect tax in Ukraine, among other countries, providing one of the largest items of state budget revenues. The presence of the VAT refund procedure and the need to cover public spending with the revenues from VAT administration require that an effective method of planning and forecasting VAT revenues for the new fiscal year be used. The purpose of the article was to analyze the effectiveness of two methods of forecasting of VAT revenues, such as the moving average method and the method of correlation and regression. This was done by analysing the effectiveness of forecasts made for previous years and comparing them with actual data to make the forecast of VAT revenues using these methods for 2014–2016 years and identifying the main causes of problems in the forecasting process. The results show that the forecasts based on two methods (correlation and regression analysis and double moving average) are sufficiently accurate. After making certain adjustments, these methods can be used at the national level.
Źródło:
Ekonomia Międzynarodowa; 2015, 010
2082-4440
2300-6005
Pojawia się w:
Ekonomia Międzynarodowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Janusz Wojciech Libicki i jego wkład do polskiej ekonomii (w osiemdziesiątą rocznicę mordu w Katyniu)
Janusz Wojciech Libicki and his contribution to Polish economics (on the 80th anniversary of his murder at Katyń)
Autorzy:
Bochenek, Mirosław
Powiązania:
https://bibliotekanauki.pl/articles/1036698.pdf
Data publikacji:
2021-03-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
history of economic thought
monetary policy
economic crisis
theory of production costs
public finances
JEL Codes: B2, D24, E32, E52, E62
historia myśli ekonomicznej
polityka monetarna
kryzys gospodarczy
teoria kosztów produkcji
finanse publiczne
JEL: B2, D24, E32, E52, E62
Opis:
Celem niniejszego opracowania jest prezentacja dorobku naukowego Janusza Wojciecha Libickiego – ekonomisty, oficera Wojska Polskiego i „katyńczyka”. Jako zwolennik szkoły neoklasycznej oraz stosowania metody matematycznej zajmował się manipulowaniem pieniądza przez bank centralny, kryzysami agrarnymi, nowoczesną teorią kosztów produkcji, równowagą przedsiębiorstwa i rentą producenta, teorią opodatkowania i wydatków publicznych. Był uznawany za nadzieję polskiej ekonomii okresu międzywojennego. Niestety, został zamordowany w okolicach Katynia i szybko zapomniany przez polskich ekonomistów.
The aim of this study is to present the scientific output of Janusz Wojciech Libicki, an economist, Polish Army officer, and Katyń victim. As an advocate of the neoclassical school and of the application of the mathematical method, he dealt with the manipulation of money by the central bank, agrarian crises, modern production cost theory, company balance and producer’s rent, taxation and public expenditure theory. In the interwar period, he was considered to be the hope of Polish economics. Tragically, he was murdered near Katyń and quickly forgotten by Polish economists.
Źródło:
Ruch Prawniczy, Ekonomiczny i Socjologiczny; 2021, 83, 1; 243-256
0035-9629
2543-9170
Pojawia się w:
Ruch Prawniczy, Ekonomiczny i Socjologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lattice Dynamics of Cubic Mercury Sulphide
Autorzy:
Szuszkiewicz, W.
Dybko, K.
Dynowska, E.
Górecka, J.
Witkowska, B.
Hennion, B.
Powiązania:
https://bibliotekanauki.pl/articles/1952186.pdf
Data publikacji:
1996-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
62.20.Dc
63.20.-e
Opis:
The acoustic phonon dispersion of mercury sulphide of zinc-blende structure (β-HgS) was studied by inelastic neutron scattering. The measurements were carried out at 19 K and 295 K on HgS crystals doped with Fe. A slight decrease in phonon frequencies with increasing temperature was found, the temperature dependence being the strongest for LA phonons with [ξ,ξ,0] propagation. From acoustic phonon dispersion the values of selected elastic constants were determined for β-HgS.
Źródło:
Acta Physica Polonica A; 1996, 90, 5; 947-950
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Novel High Strain Rate Sensitive Rigid Polyurethane Resin Based Syntactic Foam
Autorzy:
Yazıcı, M.
Powiązania:
https://bibliotekanauki.pl/articles/1186501.pdf
Data publikacji:
2016-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
62.23.Pq
61.43.Gt
61.41.+e
62.20.-x
Opis:
Syntactic foams are closed cell structured foam materials and present improved properties for lightweight and high performance material requests. They have been widely used in naval, aeronautical, aerospace, civil, industrial, and automotive engineering applications on account of their good acoustical attenuation, excellent strength to weight ratio, vibration isolation, dielectric properties. In this study, a novel high strain rate sensitive syntactic foam was developed. A rigid polyurethane resin was used as a binder material. Glass bubbles were used as an additive for producing cell structure. Elastomeric silicone rubber resin were used to change elastic properties of the foam as an additional binder material. Quasistatic compression properties and high strain rate compression properties were obtained by using Instron Universal Tensile-Compression Machine and Split Hopkinson Pressure Bar experimental setup respectively. The results show that developed foams are low dense and very high strain rate sensitive materials. Consequently, developed foam can be used for the blast, impact or ballistic mitigation purpose as a coating material.
Źródło:
Acta Physica Polonica A; 2016, 129, 4; 613-616
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the Crash Boxes Light Weighting with Syntactic Foams by the Finite Element Analysis
Autorzy:
Özer, H.
Can, Y.
Yazıcı, M.
Powiązania:
https://bibliotekanauki.pl/articles/1031574.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
02.70.Dh
62.20.-x
61.41.+e
Opis:
Light-weighting is a new scope in the automotive industry to accommodate new emission regulations. The parts produced with conventional metallic materials are replaced with parts produced by using light weight or high strength materials, to obtain light weighted equivalents of the same strength. Foam core sandwich structures, high strength steels, composite materials are the most used alternative materials. Syntactic foams that show outstanding performance in case of high-speed collisions have an excellent utility as energy absorbers in vehicle crash boxes. Syntactic foams are modeled in crash boxes at various filling rates and filling patterns in the context of this study. As results of the FEM analyses, it is observed that syntactic foams have excellent crash performance, as well as weight-reducing effect in vehicle crash boxes.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 734-737
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical Characterisation of Modified Aramid Fibres Used in Dentistry
Autorzy:
Malicka-Soczka, A.
Domka, L.
Gajdus, P.
Hędzelek, W.
Powiązania:
https://bibliotekanauki.pl/articles/1810276.pdf
Data publikacji:
2009-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
62.20.-x
68.37.Hk
61.41.+e
Opis:
Reconstructive phase of medical treatment, especially in dentistry, requires the use of different polymers. A common laboratory method to increase the fracture resistance of acrylic resin dentures is to include high-resistance synthetic fibres in the processing protocol. However, in the case of aramid fibres the problem of ensuring high durability of bonding between the fibre and acrylic resin has not been solved yet. The aim of the study is to evaluate the mechanical properties and microstructure of acrylic resin reinforced with modified aramid fibres used as fillers or as fibres treated with epoxy resin. In this study mechanical strength of 10 samples of aramid fibres Kevlar (DuPont) and 10 samples of acrylic resin ProBase (Ivoclar) was determined. The controls were unreinforced samples. The three point loading tests were carried out on a universal testing machine Hounsfield. The structures of the fillers and composites were characterised by the scanning electron microscopy. The results are presented graphically in diagrams and table.
Źródło:
Acta Physica Polonica A; 2009, 115, 2; 599-601
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optical and Structural Properties of Zn$\text{}_{1-x}$Be$\text{}_{x}$Se Mixed Crystals
Autorzy:
Firszt, F.
Łęgowski, S.
Męczyńska, H.
Szatkowski, J.
Zakrzewski, J.
Paszkowicz, W.
Domagała, J.
Marczak, M.
Powiązania:
https://bibliotekanauki.pl/articles/1969072.pdf
Data publikacji:
1998-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.55.Et
78.20.-e
62.65.+k
Opis:
Optical and structural properties of Zn$\text{}_{1-x}$Be$\text{}_{x}$Se bulk crystals in the range of composition 0 ≤ x ≤ 0.41 have been studied. These crystals were grown by Bridgman method under an argon overpressure. Transmission, absorption, photoluminescence and photoacoustic spectra as a function of composition were investigated. It has been found that the crystal structure is of sphalerite type. The crystal quality increases when the crystallization process of the same boule is performed more than once. In the investigated composition range the lattice constant decreases and the energy gap increases with increasing beryllium content. From photoluminescence measurements the excitonic energy gap about 3.64 eV at 40 K was estimated for the highest obtained Be concentration (x=0.41).
Źródło:
Acta Physica Polonica A; 1998, 94, 2; 309-312
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First-Principles Study of Structural, Elastic and Mechanical Properties of Zinc-Blende Boron Nitride (B3-BN)
Autorzy:
Daoud, S.
Loucif, K.
Bioud, N.
Lebgaa, N.
Powiązania:
https://bibliotekanauki.pl/articles/1419742.pdf
Data publikacji:
2012-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
45.10.-b
62.20.D-
61.66.-f
62.20.de
81.40.Jj
31.15.E-
Opis:
First principles study of structural, elastic properties and anisotropy effect on the mechanical parameters of the zinc-blende boron nitride has been performed using the pseudopotential plane wave method based on density functional theory with the Teter and Pade exchange-correlation functional of the local density approximation. The equilibrium lattice constant, molecular and crystal densities, bond length, the independent elastic constants, bulk modulus and its pressure derivatives, compressibility, shear modulus, internal strain parameter, isotropy factor, compliance constants, the Debye temperature, Young's modulus, Poisson's ratio, the Lamé constants and sound velocity for directions within the important crystallographic planes of this compound are obtained and analyzed in comparison with the available theoretical data reported in the literature.
Źródło:
Acta Physica Polonica A; 2012, 122, 1; 109-115
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat Capacity and Elastic Constants of Fe$\text{}_{3-x}$Zn$\text{}_{x}$O$\text{}_{4}$ in the Vicinity of the Verwey Transition
Autorzy:
Kozłowski, A.
Kąkol, Z.
Schwenk, H.
Bareiter, S.
Hinkel, C.
Luthi, B.
Honig, J. M.
Powiązania:
https://bibliotekanauki.pl/articles/2013722.pdf
Data publikacji:
2000-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
62.20.Dc
63.20.-e
64.60.-i
65.40.+g
Opis:
The results of the heat capacity and elastic constant studies of Fe$\text{}_{3-x}$Zn$\text{}_{x}$O$\text{}_{4}$ (x<0.04) series are reported. Adiabatic heat capacity measurements, performed on single crystals, show the clear change of the transition character from first order for low Zn content (x<0.012) to the higher order in 0.012
Źródło:
Acta Physica Polonica A; 2000, 97, 5; 883-887
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Raman Piezospectroscopy of Phonons in Bulk 6H-SiC
Autorzy:
Grodecki, K.
Wysmołek, A.
Stępniewski, R.
Baranowski, J.
Hofman, W.
Tymicki, E.
Grasza, K.
Powiązania:
https://bibliotekanauki.pl/articles/1791360.pdf
Data publikacji:
2009-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
62.50.-p
42.65.Dr
63.20.-e
78.30.-j
Opis:
Raman piezospectroscopy of high quality 6H-SiC crystals is presented. The crystals used in experiments were grown by the seeded physical vapor transport method. Uniaxial stress up to 0.9 MPa, obtained using a spring apparatus, was applied along [11-20] and [10-10] directions. It was found that the application of uniaxial stress led to different energy shifts of the observed phonon excitations in the investigated 6H-SiC crystals. The obtained pressure coefficients vary in the range 0.98-5.5 $cm^{-1}$ $GPa^{-1}$ for different transverse optical phonon modes. For longitudinal optic phonon modes pressure coefficients in the range 1.6-3.6 $cm^{-1}$ $GPa^{-1}$ were found. The data obtained could be useful in evaluation of local strain fields in SiC based structures and devices including epitaxial graphene.
Źródło:
Acta Physica Polonica A; 2009, 116, 5; 947-949
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phototermal Spectra of Inhomogeneous Coatings
Autorzy:
Popovic, M.
Galovic, S.
Stojanovic, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1791218.pdf
Data publikacji:
2009-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.62.Eh
44.05.+e
44.10.+i
68.60.Dv
Opis:
In this paper we demonstrate a theoretical study for photothermal measurements on inhomogeneous coatings. First, a general photothermal mathematical model for thermal gradient materials is presented. Then, we discuss the effects of inhomogeneous thermal properties in photothermal amplitude and phase spectra of coatings. Finally, a method for quantitative depth profiling that makes use of prior knowledge about the type of profile existing in a sample to reduce the instabilities associated with the mathematically ill conditioned task is demonstrated.
Źródło:
Acta Physica Polonica A; 2009, 116, 4; 535-537
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Local Phenomena in meta-mict Titanite
Autorzy:
Bismayer, U.
Paulmann, C.
Groat, L.
Zhang, M.
Powiązania:
https://bibliotekanauki.pl/articles/1550076.pdf
Data publikacji:
2010-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
23.60.+e
61.43.-j
62.23.-c
78.30.-j
81.40.-z
Opis:
Pure titanite is a mineral with chemical composition $CaTiSiO_{5}$. Its structure consists of corner linked $TiO_{6}$-octahedra, $SiO_{4}$-tetrahedra and sevenfold coordinated Ca positions. In nature various impurities like U and Th can be incorporated in the structure showing alpha and beta radiation. On meta-mictization, a process which occurs in nature when a mineral is exposed to radioactive irradiation, strong modifications of the structure are observed. Recoil processes due to alpha radiation change over geological time scales the originally periodically structured material into a quasi-amorphous state with persisting short-range order but destroyed long-range order. We report IR and Raman spectra as well as X-ray diffraction data of meta-mict and heat treated titanite from the Cardiff mine, Canada. IR as well as the Raman modes are strongly broadened in the meta-mict material and sharpen on annealing. The OH-stretching mode at 3486 $cm^{-1}$ indicates strong changes in the local environment of OH in meta-mict titanite. The appearance of the Raman excitations between 620 and 750 $cm^{-1}$ in meta-mict titanite, which in IR spectra are due to Ti-O stretching from $TiO_{6}$ octahedra, indicates the breakdown of the Raman selection rules. This points to the breaking of the octahedral symmetry of $TiO_{6}$ polyhedra.
Źródło:
Acta Physica Polonica A; 2010, 117, 1; 74-77
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Single Pulse Laser Ablation of AISI 316L Stainless Steel Surface Using Nd:YAG Laser Irradiation
Autorzy:
Demir, P.
Kacar, E.
Akman, E.
Demir, A.
Powiązania:
https://bibliotekanauki.pl/articles/1195232.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.62.-b
44.05.+e
44.10.+i
61.82.-d
61.82.Bg
79.20.Eb
Opis:
The interaction of single-pulse Nd:YAG laser, operating at 1064 nm wavelength and 6 ns pulse duration, with AISI 316L stainless steel target surface was investigated experimentally and theoretically. Surface modification of stainless steel using laser irradiation was studied by observing the effects of varying incident laser pulse intensities on surface morphology. Surface structure of laser treated stainless steel was determined by optical microscopy and profilometry analyses. Numerical calculation by heat transfer equation was performed for single laser pulse irradiation. The results, obtained by theoretical and experimental processes, of the interaction between single-pulse Nd:YAG laser irradiation and AISI 316L stainless steel target surface are reported.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 439-441
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł

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