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Wyświetlanie 1-15 z 20
Tytuł:
Temporal/locative inversion in Arabic
Autorzy:
Jarrah, Marwan
Powiązania:
https://bibliotekanauki.pl/articles/1121469.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
phase theory
subject extraction
temporal/locative inversion
Arabic
Opis:
This research scrutinizes the observation that when the thematic subject is extracted (i.e. questioned) in Jordanian Arabic, temporal/locative inversion may occur. Temporal inversion occurs irrespective of the verb being transitive or intransitive, whereas locative inversion is limited to contexts with an unaccusative verb. This research argues that this distinction correlates with the base-generation of temporal/locative adjuncts; temporal adjuncts are base-generated adjoining to TP, whereas locatives are base-generated adjoining to VP. Temporal but not locative adjuncts resist fronting with vP, demand the use of a tense copula (or a tensed verb), and are not subject to deletion along with the lexical verb. With the assumption that Spec, SubjP must be filled with a non-silent copy due to the effects of the so-called Subject Criterion (Rizzi and Shlonsky 2007), a temporal or locative adjunct, if any, fills this position instead of the extracted thematic subject. Given its low position, a locative adjunct is accessible to Subj0 only when there is no v*P, hence the account of the correlation between locative inversion and the type of the verb. Furthermore, this research explores the existence of temporal/locative inversion in other two Arabic dialects (Najdi Arabic and Iraqi Arabic), arguing for a micro-parametric view of this strategy across Arabic dialects.
Źródło:
Yearbook of the Poznań Linguistic Meeting; 2017, 3, 1; 117-140
2449-7525
Pojawia się w:
Yearbook of the Poznań Linguistic Meeting
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sentence-final particles in multiple phases? Some evidence from language contact
Autorzy:
Chan, Tsan Tsai
Powiązania:
https://bibliotekanauki.pl/articles/2135317.pdf
Data publikacji:
2021-09-25
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
sentence-final particles
cartography
Phase Theory
language contact
Cantonese
Opis:
Cinque’s (1999) cartographic theory associates one meaning with one functional head. As such, if applied to sentence-final particles (SFPs), cartographic assumptions ought to group semantically similar SFPs onto the same functional head cross-linguistically (cf. Pan 2019; Sybesma & Li 2007). However, I show that aspectual and restrictive focus SFPs in Cantonese and Mandarin (Sinitic, Sino-Tibetan) seemingly contradict Cinque by occupying different structural positions despite their semantic closeness. To shed light on the problem, I adduce novel data from Guangzhou Cantonese and Singapore Cantonese, demonstrating that SFPs borrowed into these varieties are treated differently according to their structural height. Likewise citing scopal and other facts, I ultimately make a case for placing SFPs in multiple phases (Chomsky 2000 etc.), following Erlewine (2017) and Biberauer (2017), but contra Pan (2019), a.o. To accommodate Cinque (1999), I ultimately submit that different-phase SFPs constitute distinct lexical classes, which each cluster separately, but in the same semantically determined sequence compatible with cartographic assumptions.
Źródło:
Yearbook of the Poznań Linguistic Meeting; 2021, 7, 1; 1-41
2449-7525
Pojawia się w:
Yearbook of the Poznań Linguistic Meeting
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Refined multi-phase-lags theory and Thomson effect on a micropolar thermoelastic medium with voids
Autorzy:
Alharbi, Amnah M.
Abd-Elaziz, Elsayed M.
Othman, Mohamed I.A.
Powiązania:
https://bibliotekanauki.pl/articles/1955005.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
micropolar
voids
refined-phase-lags theory
thomson effect
normal mode
analysis
Opis:
The problem considered is that of an isotropic, micropolar thermoelastic medium with voids subjected to the Thomson effect. The solution to the problem is presented in the context of the refined multiphase-lags theory of thermoelasticity. The normal mode analysis was used to obtain the analytical expressions of the considered variables. The nondimensional displacement, temperature, microrotation, the change in the volume fraction field and stress of the material are obtained and illustrated graphically. The variations of these quantities have been depicted graphically in the refined-phase-lag theory, Green and Naghdi theory of type II, Lord and Shulman theory and a coupled theory. The effects of the Thomson parameter and phase lag parameters on a homogeneous, isotropic, micropolar thermoelastic material with voids are revealed and discussed. Some particular cases of interest are deduced from the present investigation.
Źródło:
Archives of Thermodynamics; 2021, 42, 3; 279--309
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation of a solid product with high water content and water retention properties
Autorzy:
Cvijić, Marko
Golob, Janvit
Powiązania:
https://bibliotekanauki.pl/articles/778509.pdf
Data publikacji:
2020
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
water in organic phase emulsion
phase equilibrium
mass transfer
Luikov’s parameters
theory of drying
Opis:
This work presents the development of a solid product with a high water content (99.08%) and water retention properties. Water was chosen as a potential carrier of a volatile active substance and water retaining properties of material were studied at a temperatures and relative air humidity values with the support of the theory of drying. The study first confirmed the role of Gibbs’ phase rule in the research of solid-gas phase equilibrium, and second presented drying kinetics developed from Fick’s second law and expressed with the first term of the Fourier equation. Solutions of equations for phase equilibrium and mass transfer enabled the calculation of Luikov’s parameters, which are important for equilibrium relations and for the diffusivity of water in a solid for mass transfer prediction. The obtained thermodynamic and kinetic parameters enabled product characterisation that may be important for the prediction of retention times.
Źródło:
Polish Journal of Chemical Technology; 2020, 22, 3; 17-23
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Decomposition Pathways for Aqueous Hydroxylammonium Nitrate Solutions: a DFT Study
Autorzy:
Izato, Y.
Koshi, M.
Miyake, A.
Powiązania:
https://bibliotekanauki.pl/articles/357968.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
hydroxylamine nitrate
reaction pathway
liquid-phase reaction
density functional theory
Opis:
Hydroxylammmonium nitrate (hydroxylamine nitrate, HAN) is one of the most promising candidates as a replacement for commonly used liquid mono-propellants such as hydrazine. The reaction pathways involved in the initial and the catalytic decomposition of HAN in aqueous solution were determined using quantum chemistry calculations incorporating solvent effects. Optimized structures were obtained for the reactants, products and transition states at the ωB97XD/6-311++G(d,p)/SCRF = (solvent = water) level of theory and the total electron energies of these structures were calculated at the CBS-QB3 level of theory. In the initial decomposition, the ion-neutral NH3OH+-HNO3 reaction, the neutral-neutral NH3O-HNO3 reaction and the HNO3 self-decomposition pathways were all found to have reasonable energy barriers, with values of 91.7 kJ/mol, 88.7 kJ/mol and 89.8 kJ/mol, respectively. The overall reaction resulting from any of these pathways can be written as: HAN → HONO + HNO + H2O. The ionic reaction is dominant during the initial decomposition of HAN in aqueous solution because NH3OH+ and NO3– are the major species in such solutions. We also developed six catalytic mechanisms and each of these schemes provided the same global reaction: NH2OH + HONO → N2O + 2H2O. The t-ONONO2 oxidizing scheme is the most plausible based on the energy barrier results.
Źródło:
Central European Journal of Energetic Materials; 2017, 14, 4; 888-916
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Condensed Geometry II: New Constraints, Temporal Confinement Phase and Structure and Interpretation of Space and Time
Autorzy:
Kabe, Koustubh
Powiązania:
https://bibliotekanauki.pl/articles/1190218.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Ashtekar variables
Loop Quantum Gravity
surface states
phase transitions
string theory
Opis:
In this paper we basically intend to deductively study aspects and physical behavior of time in the Quantum Mechanical and Loop Quantum Gravity regime and the physical interpretations therein. The implicit gauge invariance of the vortical time is deduced. A new form of the Hamiltonian constraint is produced and the corresponding Vector or Diffeomorphism constraint is also introduced, the Gauss constraint being found to be the same as that in the original. The new consequences are discussed. The paper presents fresh new ideas and interpretations as well as perspectives on the spatial as well as the now introduced temporal aspects of Loop Quantum Gravity. In this we basically intend to deductively study aspects and physical behavior of Time in the Quantum Mechanical and Loop quantum gravity regime and the physical interpretations therein. In what follows, we provide a systematic mathematico-physical treatment of the vortical aspect of quantum gravity or a test quantum system, relative to space, as the time for that system. The implicit gauge invariance of the vortical time is deduced. A general theory of implicit and explicit gauge invariance is proposed. The gauging out of the acausality gauge degree of freedom is deduced and the causal direction of time is shown to nucleate out as a self ordered criticality due to a “tweaking” field which is shown to be a form of magnetic phase transition. This magnetic phase arising in the Kodama holomorphic wave functional universe, arises naturally due to the Ashtekar “magnetic” field in general. Also the wave-particle duality of gravity/ geometry as a quantum system is interpreted in terms of the physical role played by time. The long standing problem of the interpretation of the quantum mechanical time-inverse temperature has apriori been resolved with a heuristic interpretation. As an epilogue, the Pauli theorem on time as an operator has been discussed along with the standard proof.
Źródło:
World Scientific News; 2016, 44; 236-256
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Double phase problems: a survey of some recent results
Autorzy:
Papageorgiou, Nikolaos S.
Powiązania:
https://bibliotekanauki.pl/articles/2048893.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
double phase integrand
generalized Orlicz spaces
regularity theory
maximum principle
Nehari manifold
Opis:
We review some recent results on double phase problems. We focus on the relevant function space framework, which is provided by the generalized Orlicz spaces. We also describe the basic tools and methods used to deal with double phase problems, given that there is no global regularity theory for these problems.
Źródło:
Opuscula Mathematica; 2022, 42, 2; 257-278
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Memory response on generalized thermoelastic medium in context of dual phase lag thermoelasticity with non-local effect
Autorzy:
Tiwari, R.
Saeed, A. M.
Kumar, R.
Kumar, A.
Singhal, A.
Powiązania:
https://bibliotekanauki.pl/articles/38694222.pdf
Data publikacji:
2022
Wydawca:
Instytut Podstawowych Problemów Techniki PAN
Tematy:
memory dependent derivative
time-delay
kernel function
non-local
continuum theory
dual phase lags
Opis:
Theory of non-local continuum is contemporary appraised and is found to be supplementary coherent to capture the impacts of each and every point of the material at its single point. The conviction of memory dependent derivative is also newly appraised and is observed to be more intuitionistic for predicting the realistic character of the real-world obstacles. Attractiveness of the belief of a memory dependent derivative lies in its unique properties such as its significant constituents – a kernel function and time-delay are freely selected according to the requirement of a problem. The present study comprises a new meticulous thermoelastic heat conduction model for the homogeneous, isotropic, thermoelastic half space medium concerning memory effects and non-local effects. Governing equations are constructed on the basis of the newly appraised non-local generalized theory of thermoelasticity with two phase lags in the frame of a memory dependent derivative. Exact analytical solutions of the physical fields such as dimensionless temperature, displacement as well as thermal stress are evaluated by using a suitable technique of the Laplace transform. Quantitative results are determined in a time-domain for different values of time by taking the numerical inversion of the Laplace transform. Noteworthy role of the constituents of the memory dependent derivative such as kernel function as well as time-delay factor has been scrutinized on the crucial field variables of the medium through computational outcomes. Moreover, the impact of non-local parameter is examined on the variations of field quantities through the quantitative results.
Źródło:
Archives of Mechanics; 2022, 74, 2-3; 69-88
0373-2029
Pojawia się w:
Archives of Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Matrix Notation for the Analysis of Power Changes in a 3‑phase Circuit
Wykorzystanie zapisu macierzowego do analizy zmian mocy w obwodzie 3-fazowym
Autorzy:
Ładniak, L.
Powiązania:
https://bibliotekanauki.pl/articles/397235.pdf
Data publikacji:
2016
Wydawca:
ENERGA
Tematy:
system 3-fazowy
teoria mocy
rachunek macierzowy
three-phase system
power theory
matrix calculus
Opis:
Using the matrix notation for voltages and currents of a 3-phase system, a description of changing the instantaneous power on terminals of electric circuit has been offered as a third rank matrix. As a result of the power matrix’ decomposition into a symmetric matrix and an antisymmetric matrix and upon defining norms for these matrices the state of the 3-phase circuit can be clearly determined.
Korzystając z zapisu macierzowego napięć i prądów występujących w węźle obwodu 3-fazowego, zaproponowano opis zmian wartości chwilowych mocy na zaciskach rozpatrywanego układu w postaci macierzy trzeciego stopnia. W wyniku dekompozycji macierzy mocy na macierz symetryczną i antysymetryczną oraz po zdefiniowaniu norm dla tych macierzy można w jednoznaczny sposób określić stan układu 3-fazowego.
Źródło:
Acta Energetica; 2016, 2; 149-152
2300-3022
Pojawia się w:
Acta Energetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Single-phase power active filter using instantaneous reactive power theory : theoretical and practical approach
Autorzy:
Altus, J.
Michalik, J.
Dobrucky, B.
Viet, L. H.
Powiązania:
https://bibliotekanauki.pl/articles/262653.pdf
Data publikacji:
2005
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
power active filter
p-q power theory
orthogonal transformations
single-phase system
fictitous virtual quantity
Opis:
The paper deals with the new method of analysis, synthesis and experimentation of single-phase power active filters. By using a new particular transformation theory, the ordinary single-phase system can be transformed into an equivalent two-axes orthogonal one. The new original thought is based on the idea that ordinary single-phase quantity can be complemented bv fictitious second phase so that both of them will create an orthogonal system, as is usual in three-phase systems, in spite of [1]. Application of the above theory makes it possible to use complex methods of analysis as the instantaneous reactive power method, which have not been usable for single-phase systems so far. Both, the active and reactive powers can be determined by this way. Practical application of the method is outlined for the case of reference current determination for single-phase power active filter. The paper shows some examples of the simu-lution verification results, which proved a high accuracy and extremely fast response of the single-phase active filter with control, based on the introduced method. The effectiveness of proposed control algorithm is also demonstrated by experimental results, which were carried out on the single - phase active parallel filter, power rate of 25 kVA and controlled by 32 - bit Heating point digital signal processor TMS 320C31.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2005, 11, 1; 33-38
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Meta-stable solidification created by the detonation method of coating formation
Autorzy:
Wołczyński, W.
Garzeł, G.
Morgiel, J.
Senderowski, C.
Pawłowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/382812.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
krystalizacja
krzepnięcie szybkie
powłoka Fe-Al
faza amorficzna
theory of crystallization
rapid solidification process
Fe-Al coating
meta-stable phase diagram
amorphous phase
Opis:
Particles of the Fe-Al type (less than 50 m in diameter) were sprayed onto the 045 steel substrate by means of the detonation method. The TEM, SAED and EDX analyses revealed that the Fe-Al particles have been partially melted in the experiment of coating formation. Particle undergone melting even within about 80% of its volume. Therefore, solidification of the melted part of particles was expected. Solidification differed significantly due to a large range of chemical composition of applied particles (from 15 at.% Al up to 63 at.% Al). A single particle containing 63 at.% Al was subjected to the detailed analysis, only. The TEM / SAED techniques revealed in the solidified part of particle three sub-layers: an amorphous phase, [...] , periodically situated FeAl + Fe2Al5 phases, and a non-equilibrium phase, [...]. A hypothesis dealing with the inter-metallic phases formation in such a single particle of the nominal composition No = 0.63 is presented. At first, the solid / liquid system is treated as an interconnection: substrate / liquid / nonmelted particle part . Therefore, it is suggested that the solidification occurs simultaneously in two directions: towards a substrate and towards a non-melted part of particle. The solidification mechanism is referred to the Fe-Al meta-stable phase diagram. It is shown that the melted part of particle solidifies rapidly according to the phase diagram of meta-stable equilibrium and at a significant deviation from the thermodynamic equilibrium.
Źródło:
Archives of Foundry Engineering; 2012, 12, 2; 93-96
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hamilton-Jacobi/ Canonical Phase Transitions of Ashtekar LQG-Polyakov Strings: World Sheet Dynamics as Regelation through the d = 3 + 1 Spacetime
Autorzy:
Kabe, Koustubh
Powiązania:
https://bibliotekanauki.pl/articles/1179195.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Ashtekar connectio-dynamics
Loop Quantum Gravity
Nambu-Goto action
Polyakov path integral
phase transitions
string theory
Opis:
The following paper takes up an Ashtekar connectio-dynamics and algebraic quantum field theoretic treatment of a relativistic quantum string without SUSY and hence in four spacetime dimensions treats the Polyakov dynamics of a relativistic quantum string given explicitly by the Polyakov path integral in terms of a “canonical” phase transition where the string is imagined as a thread regelating through the “ice cube” of spacetime.
Źródło:
World Scientific News; 2017, 83; 206-211
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics coefficient for two-phase soil model
Autorzy:
Wrana, B.
Powiązania:
https://bibliotekanauki.pl/articles/178585.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
dynamic consolidation
Biot theory
dynamics
two-phase soil model
teoria Biota
dynamika
dwufazowy model gleby
konsolidacja dynamiczna
Opis:
The paper investigates a description of energy dissipation within saturated soils-diffusion of pore-water. Soils are assumed to be two-phase poro-elastic materials, the grain skeleton of which exhibits no irreversible behavior or structural hysteretic damping. Description of motion and deformation of soil is introduced as a system of equations consisting of governing dynamic consolidation equations based on Biot theory. Selected constitutive and kinematic relations for small strains and rotation are used. This paper derives a closed form of analytical solution that characterizes the energy dissipation during steady-state vibrations of nearly and fully saturated poro-elastic columns. Moreover, the paper examines the influence of various physical factors on the fundamental period, maximum amplitude and the fraction of critical damping of the Biot column. Also the so-called dynamic coefficient which shows amplification or attenuation of dynamic response is considered.
Źródło:
Studia Geotechnica et Mechanica; 2014, 36, 2; 51-56
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibrations in a fluid-loaded poroelastic hollow cylinder surrounded by a fluid in plane-strain form
Autorzy:
Shanker, B.
Nath, C. N.
Shah, S. A.
Reddy, P. M.
Powiązania:
https://bibliotekanauki.pl/articles/265190.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
teoria Biota
częstotliwość
wibracje
prędkość fazowa
Biot's theory
fluid-loaded poroelastic cylinder
frequency
planestrain vibrations
phase velocity
Opis:
Plane-strain vibrations in a fluid-loaded poroelastic hollow cylinder surrounded by a fluid are investigated employing Biot’s theory of wave propagation in poroelastic media. The poroelastic hollow cylinder is homogeneous and isotropic, while the inner and outer fluids are homogeneous, isotropic and inviscid. The frequency equation of the fluid-loaded poroelastic cylinder surrounded by a fluid is obtained along with several particular cases, namely, fluid-loaded poroelastic cylinder, fluid-loaded bore, poroelastic cylinder surrounded by a fluid and poroelastic solid cylinder submerged in a fluid. The frequency equations are obtained for axially symmetric, flexural and anti-symmetric vibrations each for a pervious and an impervious surface. Nondimensional frequency for propagating modes is computed as a function of the ratio of thickness to the inner radius of the core. The results are presented graphically for two types of poroelastic cylinders and then discussed.
Źródło:
International Journal of Applied Mechanics and Engineering; 2013, 18, 1; 189-216
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of diffusion and internal heat source on a two-temperature thermoelastic medium with three-phase-lag model
Autorzy:
Othman, M. I.
Said, S. M.
Powiązania:
https://bibliotekanauki.pl/articles/240881.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
diffusion
Green-Naghdi theory
internal heat source
three-phase-lag model
two-temperature
dyfuzja
teoria Greena-Naghdiego
źródło ciepła
Opis:
The purpose of this paper is to depict the effect of diffusion and internal heat source on a two-temperature magneto-thermoelastic medium. The effect of magnetic field on two-temperature thermoelastic medium within the three-phase-lag model and Green-Naghdi theory without energy dissipation i discussed. The analytical method used to obtain the formula of the physical quantities is the normal mode analysis. Numerical results for the field quantities given in the physical domain are illustrated on the graphs. Comparisons are made with results of the two models with and without diffusion as well as the internal heat source and in the absence and presence of a magnetic field.
Źródło:
Archives of Thermodynamics; 2018, 39, 2; 15-39
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
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