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Journal articles on the topic 'Parameter K(t)'

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Published: 28 June 2021

Last updated: 29 July 2025

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1

Venttsel’, V. A., A. E. Petrova, and A. V. Rudnev. "Magnetic susceptibility of high-T c superconducting ceramic Tl3Ca7Ba3Cu8O7." Soviet Journal of Low Temperature Physics 16, no. 1 (1990): 60–62. https://doi.org/10.1063/10.0032329.

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The ac magnetic susceptibility of HTS ceramic Tl3Ca7Ba3Cu8O7 is measured by using the bridge method. The critical parameters Tc = 100 K and Hc1 ≈ 15 Oe are estimated at T→0; below 50 K, Hc2 linearly decreases with temperature [Hc2 = 440-8.4T (kOe)], while above 50 K it decreases according to a power law [Hc2 = 275(1 – T/Tc)3.5 (kOe)]. The Ginzburg-Landau parameter is estimated as x(0) ≃ 300, x(Tc) ≈ 8, and x(T) ∝ x0(1 – T/Tc)1.6.

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2

Shankar, Sujay, Michael A. Gully-Santiago, and Caroline V. Morley. "A New Hybrid Machine Learning Method for Stellar Parameter Inference." Astrophysical Journal 985, no. 1 (2025): 68. https://doi.org/10.3847/1538-4357/adcb47.

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Abstract The advent of machine learning (ML) is revolutionary to numerous scientific disciplines, with a growing number of examples in astronomical spectroscopic inference, as ML is more powerful than traditional techniques. Here we introduce a hybrid ML (HML) method combining automatic differentiation, interpolation, and Bayesian optimization to infer stellar parameters of stellar spectra. We study T eff, log ( g ) , and [Fe/H], but this method could be extended to other parameters such as [α/Fe] (alpha element abundance), C/O (carbon–oxygen ratio), and f sed (sedimentation efficiency). We fi

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3

Petzschner, Frederike H., Irene P. Ponce, Martin Blaimer, Peter M. Jakob, and Felix A. Breuer. "Fast MR parameter mapping using k-t principal component analysis." Magnetic Resonance in Medicine 66, no. 3 (2011): 706–16. http://dx.doi.org/10.1002/mrm.22826.

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4

Falcon, Sergio. "On the Extended (k, t) - Fibonacci Numbers." Journal of Advances in Mathematics and Computer Science 39, no. 7 (2024): 81–89. http://dx.doi.org/10.9734/jamcs/2024/v39i71914.

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This article studies an extension of the concept of k-Fibonacci numbers by introducing a new non-zero positive integer parameter t. In case t = 1, the numbers found are the Leonardo numbers. A homogeneous recurrence relationship is found between these new numbers, and various formulas are studied such as the Binet Identity or the generating function.

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5

Sebko, V. V., Ye V. Pyrozhenko, N. M. Zashchepkina, V. G. Zdorenko, and O. M. Markina. "Four-parameter electromagnetic method for determining the parameters of brewery effluents." Journal of Achievements in Materials and Manufacturing Engineering 113, no. 2 (2022): 49–64. http://dx.doi.org/10.5604/01.3001.0016.1405.

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of the article is to study a four-parameter electromagnetic method for joint measurements of electrical resistivity k, relative permittivity εr, temperature t and density ρ of samples of acidic, alkaline and average effluents from a microbrewery based on a magnetic flux probe (MFP), which considers the influence of informative parameters of beer effluents on the components of the amplitude and phase signals of a multiparameter device. The implementation of the four-parameter method is carried out on the basis of the dependences G1 = f (A1) and G2 = f (A2) at two frequencies of the electromagne

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6

Deshmukh, Mangesh R., Ganesh M. Bansode, and Pallavi Mahajan. "EVALUATION OF POTATO CULTIVAR FOR GROWTH AND YIELD PARAMETER." World Journal of Biology and Biotechnology 3, no. 1 (2018): 203. http://dx.doi.org/10.33865/wjb.003.01.0138.

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The present investigation on evaluation of varietal performance of various potato varieties under Pune Conditions was initiated in Oct 2012. Potato tubers of Kufri Lauvkar, Kufri Badshah, Kufri Pushkar, Kufri Surya, Kufri Khyati, Kufri Ashoka, Kufri Jyoti, Kufri Pukharaj were planted on ridges and furrows. The results revealed that Kufri Surya recorded significantly higher total tuber yield (20.67 t/ha) followed by Kufri Pukharaj (18.45 t/ha). However percent plant emergence and foliage senescence were found non-significant. Whereas results in respect of yield depicted that the variety Kufri L

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7

Chuan-Hui, N., and S. Xiao-Bao. "Grüneisen parameter of lithium, sodium and potassium at T=298 K." Journal of Physics and Chemistry of Solids 62, no. 7 (2001): 1359–61. http://dx.doi.org/10.1016/s0022-3697(01)00007-5.

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8

RUSLAN, AHMAD BASRI. "Prediction Modelling Through Chaotic Approach on Ozone (O3) Pollutant Time Series in Shah Alam City." ASM Science Journal 17 (July 27, 2022): 1–9. http://dx.doi.org/10.32802/asmscj.2022.1159.

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Studies on Ozone (O3) particles and their effect have become a significant concern. Exposure to high concentrations of O3 can cause an adverse reaction in the human respiratory system. Therefore, this study aims to predict the monthly O3 time series in the highly populated area of Shah Alam through a chaotic approach. The phase space plot and Cao methods successfully detected the chaotic behaviour O3 time series data. The three parameters are determined before the prediction process: time delay t, embedded dimension m, and nearest neighbour k. This study used t=1 and the value of m is calculat

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9

Mukherjee, Somnath. "Some Studies on K-essence Lagrangian." International Journal of Innovative Research in Physics 2, no. 2 (2021): 9–14. http://dx.doi.org/10.15864/ijiip.2202.

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K-essence Lagrangian is studied in the context of an early universe epoch when t → 0. Equation of state parameter ω < −1 as well as deceleration parameter q0 < −1, indicates an accelerated expansion of the universe at an early epoch of time driven by negative pressure generated by dark energy.

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10

Li, Guo, Li Li, and Peng Zhu. "Galloping Control for Iced Conductors Using Tuned Mass Dampers with Fixed Time-Delayed Feedback." Shock and Vibration 2019 (February 27, 2019): 1–9. http://dx.doi.org/10.1155/2019/4823457.

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A tuned mass damper with fixed time-delay feedbacks (TTMD) is first applied to suppress galloping of iced conductors. It is different from general time-delay feedback control, which also connects an added mass to a galloping body and can absorb vibrational energy. The two-degrees-of-freedom model captures the essential mechanical behaviors of iced conductors with TTMD undergoing galloping. The harmonic balance method is then employed to obtain the approximate analytical solutions of the system. Particularly, the expressions of galloping amplitude and angle frequency were obtained. Then the inf

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11

Kristoffel, N., and T. Örd. "The Pseudogap and Superconductivity Order Parameter Fluctuations." International Journal of Modern Physics B 12, no. 29n31 (1998): 3106–9. http://dx.doi.org/10.1142/s0217979298002155.

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The influence of superconductivity unequilibrium order parameter correlated fluctuations on the normal phase elementary excitations have been investigated. Correspondingly a fluctuating source of pairs appears in the effective Hamiltonian described using the Gaussian free energy functional. A pseudogap (E g ) is found on the Fermi surface decreasing with rising temperature. It is scaled with the parameter α = ∊ F /k B T c . For smaller α-s E g develops more over T c . In non-high-T c systems and overdoped high-T c compounds the pseudogap is suppressed.

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12

Ye, Wen Ming, Xu Teng Hu, Wan Lin Guo, and Ying Dong Song. "Three Dimensional Criterion for Creep Crack Propagation in C(T) Specimen." Applied Mechanics and Materials 853 (September 2016): 142–47. http://dx.doi.org/10.4028/www.scientific.net/amm.853.142.

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Experimental of two kinds of compact tension (CT) specimens’ creep crack propagation are carried out in this paper. Traditional fracture mechanics and three-dimensional fracture theory are compared and the results show that: The K-Tz two-parameter model can eliminate the thickness-effect on the crack growth rates in the relatively low K range, however when K exceed certain values the effect of thickness for crack growth rates still exists; The Ct and Ct-Tz model can describe the thickness-effect of creep crack growth rates in regions of high Ct; When the crack tip stress intensity factor K of

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13

Русаков, В. С., В. С. Покатилов, А. С. Сигов, А. А. Белик та М. Е. Мацнев. "Температурные изменения магнитной структуры мультиферроика BiFe-=SUB=-0.80-=/SUB=-Cr-=SUB=-0.20-=/SUB=-O-=SUB=-3-=/SUB=-". Физика твердого тела 61, № 6 (2019): 1107. http://dx.doi.org/10.21883/ftt.2019.06.47686.340.

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AbstractThe results of a Mössbauer study of the magnetic structure of multiferroic BiFe_0.80Cr_0.20O_3 in the temperature range of 5–550 K are presented. It is found that a collinear antiferromagnetic structure of the G type is present in BiFe_0.80Cr_0.20O_3 at temperatures below 260 K. Above 260 K, an anharmonic spin wave with a magnetic anisotropy of the easy-axis type with a high value of the anharmonicity parameter m arises. With a further increase in the temperature, the m parameter decreases and tends to zero at T ~ 420 K, at which a harmonic spin wave comes into existence. Above a tempe

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14

Jaishanker, Acharya, S. Verma R., and P. Mathur R. "Study on electronic-spectral aspects with special emphasis on symmetry change around Pr3+ ion in solution of organic oximes." Journal of Indian Chemical Society Vol. 87, Apr 2010 (2010): 465·470. https://doi.org/10.5281/zenodo.5785553.

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Department of Chemistry, Govt. Dunger College, Bikaner-334 003, Rajasthan, India <em>Manuscript received 5 January 2009, received 15 September 2009, accepted 15 September 2009</em> The change in symmetry around (stereo-environment) the doped Pr<sup>3+</sup> ion In various solutions of some organic oximes has been studied for various electronic spectral parameters. The parameters viz. Slater-Condon (<em>F</em><sub>K</sub>), Lande parameter (ζ<sub>4f</sub>), Intensity of hypersensitive band, bonding parameter (b<sup>1/2</sup>), Judd-Ofelt parameter (T<sub>λ</sub>) and

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15

Tseng, Jimmy. "Eisenstein series and an asymptotic for the K-Bessel function." Ramanujan Journal 56, no. 1 (2021): 323–45. http://dx.doi.org/10.1007/s11139-020-00358-8.

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AbstractWe produce an estimate for the K-Bessel function $$K_{r + i t}(y)$$ K r + i t ( y ) with positive, real argument y and of large complex order $$r+it$$ r + i t where r is bounded and $$t = y \sin \theta $$ t = y sin θ for a fixed parameter $$0\le \theta \le \pi /2$$ 0 ≤ θ ≤ π / 2 or $$t= y \cosh \mu $$ t = y cosh μ for a fixed parameter $$\mu >0$$ μ > 0 . In particular, we compute the dominant term of the asymptotic expansion of $$K_{r + i t}(y)$$ K r + i t ( y ) as $$y \rightarrow \infty $$ y → ∞ . When t and y are close (or equal), we also give a uniform estimate. As an applicat

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16

Usoltsev, A. S., A. T. Daniyarkhodzhaev, A. A. Gippius, and A. V. Sadakov. "Superconducting Order Parameter of the RbCa2Fe4As4F2 Compound." JETP Letters 120, no. 12 (2024): 923–31. https://doi.org/10.1134/s0021364024604445.

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The superconducting order parameter of the RbCa2Fe4As4F2 compound belonging to the new 12442 family of iron-based superconductors with a critical temperature of T c ~ 32 K has been studied. Two superconducting condensates with the order parameters ΔL ~ 6.3 meV and ΔS ~ 2.8 meV have been detected for the first time by multiple Andreev reflection spectroscopy. The temperature dependence of the superconducting critical current density J c(T) in the intrinsic field has been measured. The approximation of the dependence J c(T) demonstrates the correspondence of the experimental data to the double-g

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17

Ross, Sheldon M. "THE MEAN WAITING TIME FOR A PATTERN." Probability in the Engineering and Informational Sciences 13, no. 1 (1999): 1–9. http://dx.doi.org/10.1017/s0269964899131012.

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Consider a sequence of independent and identically distributed random variables along with a specified set of k-vectors. We present an expression for E [T], the mean time until the last k observed random variables fall within this set. Not only can this expression often be used to obtain bounds on E[T], it also gives rise to an efficient way of approximating E[T] by a simulation. Specific lower and upper bounds for E[T] are also derived. These latter bounds are given in terms of a parameter, and a Markov chain Monte Carlo approach to approximate this parameter by a simulation is indicated. The

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18

Ludwig, Donald. "Estimation Techniques for Distributed Parameter Systems (H. T. Banks and K. Kunisch)." SIAM Review 33, no. 3 (1991): 486–87. http://dx.doi.org/10.1137/1033115.

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19

Betego´n, C., and J. W. Hancock. "Two-Parameter Characterization of Elastic-Plastic Crack-Tip Fields." Journal of Applied Mechanics 58, no. 1 (1991): 104–10. http://dx.doi.org/10.1115/1.2897135.

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Plane-strain elastic-plastic crack-tip fields have been modeled with modified boundary layer formulations based on the first two terms K and T, of the elastic field. These formulations match the appropriate full field solutions. Compressive T stresses reduce the stresses by an amount which is independent of radial distance, corresponding to the introduction of a second term in addition to the dominant plastic singularity. Geometries which maintain J-dominance are characterized by zero or positive T stresses, while geometries with negative T stresses can be described by a two-parameter characte

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20

Dimitrijevic, M. S., and S. Sahal−Bréchot. "Stark broadening parameter tables for In III, Tl III and Pb IV." Serbian Astronomical Journal, no. 158 (1998): 81–91. http://dx.doi.org/10.2298/saj9858081d.

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Using a semiclassical approach, we have calculated electron-, proton-, and ionized helium-impact line widths and shifts for 20 In III multiplets for perturber densities 1014? 1020 cm?3 and 2 Tl III multiplets for perturber densities 1017 ? 1020 cm?3, and temperatures T = 20,000 ? 500,000 K, in both cases. We have calculated as well, electron-, proton-, and He III-impact line widths and shifts for 2 Pb IV multiplets, for perturber densities 1017? 1020 cm?3 and temperatures T = 50,000 ? 1,000,000 K.

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21

Landry, Alexandre. "Scalar Field Source Teleparallel Robertson–Walker F(T) Gravity Solutions." Mathematics 13, no. 3 (2025): 374. https://doi.org/10.3390/math13030374.

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This paper investigates the teleparallel Robertson–Walker (TRW) F(T) gravity solutions for a scalar field source. We use the TRW F(T) gravity field equations (FEs) for each k-parameter value case added by a scalar field to find new teleparallel F(T) solutions. For k=0, we find an easy-to-compute F(T) solution formula applicable for any scalar field source. Then, we obtain, for k=−1 and +1 situations, some new analytical F(T) solutions, only for specific n-parameter values and well-determined scalar field cases. We can find by those computations a large number of analytical teleparallel F(T) so

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22

HAO, ZHIDONG. "THE EXACT SOLUTION OF THE BCS SELF-CONSISTENCY EQUATION AND THE IMPLICATIONS." Modern Physics Letters B 07, no. 22 (1993): 1439–47. http://dx.doi.org/10.1142/s021798499300148x.

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The existence of a first order differential equation for the temperature dependence of the energy gap parameter Δk for each k state is pointed out. By using this equation, exact solution for the energy and temperature dependences of Δk is obtained. The energy range over which Δk is appreciable is within a few kBT c around the Fermi surface. Each k state may have its own temperature T c k, above which Δk = 0. In general, these T c k are not necessarily the same for all k states (the superconducting transition temperature T c corresponds to the largest T c k). Limitations of the BCS cutoff appro

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23

Rohmat, Dede. "Tipikal Kuantitas Infiltrasi Menurut Karakteristik Lahan (Kajian Empirik di DAS Cimanuk Bagian Hulu)." Forum Geografi 23, no. 1 (2009): 41. http://dx.doi.org/10.23917/forgeo.v23i1.4998.

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Rate of infiltrate can be conduct as function of permeability, suction head and moisture of soil parameter. The parameters have close relationship with soil physical characteristics. That relation can be formulated by empirical research. This study have aim to get typical infiltrate quantity based on land characteristics. Method of Green-Ampt infiltrate developed and used to study typically of infiltrate capacity on Upstream of Watershed (Case on Upstream Cimanuk Watershed). Research conducted use empirical and analytical approach.Study conducted at Oxisol Soil occupied by five kinds of land u

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24

Sharma, Bhupendra K., and Chandan Kumawat. "Impact of temperature dependent viscosity and thermal conductivity on MHD blood flow through a stretching surface with ohmic effect and chemical reaction." Nonlinear Engineering 10, no. 1 (2021): 255–71. http://dx.doi.org/10.1515/nleng-2021-0020.

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Abstract A study has been carried for a viscous, incompressible electrically conducting MHD blood flow with temperature-dependent thermal conductivity and viscosity through a stretching surface in the presence of thermal radiation, viscous dissipation, and chemical reaction. The flow is subjected to a uniform transverse magnetic field normal to the flow. The governing coupled partial differential equations are converted into a set of non-linear ordinary differential equations (ODE) using similarity analysis. The resultant non-linear coupled ordinary differential equations are solved numericall

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25

Choubey, Ashish, Sachin Kumar Jain, and Prabin Kumar Padhy. "Comprehensive tuning of Frequency shifted IMC-PID controller for boost converter using Harris Hawk optimization." Engineering Research Express 7, no. 2 (2025): 025352. https://doi.org/10.1088/2631-8695/add4be.

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Abstract The proportional integral derivative (PID) controller has been widely adopted in different applications because of its easy implementation compared to other existing control techniques. In most of the cases, PID controller’s tuning has been focussed on three main parameters: proportional gain K P , integral gain K I , derivative gain K D . Other than the classical approaches, the internal model control (IMC) approach is an established approach to design a PID controller. In the IMC framework, the controller’s performance, viz., stability, robustness and transient response, depends upo

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26

Du, Bing, A.-Li Luo, Song Wang, et al. "An Empirical Sample of Spectra of M-type Stars with Homogeneous Atmospheric-parameter Labels." Astrophysical Journal Supplement Series 275, no. 2 (2024): 42. https://doi.org/10.3847/1538-4365/ad85dc.

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Abstract The discrepancies between theoretical and observed spectra, and the systematic differences between various spectroscopic parameter estimates, complicate the determination of atmospheric parameters of M-type stars. In this work, we present an empirical sample of 5105 M-type star spectra with homogeneous atmospheric parameter labels through stellar-label transfer and sample cleaning. We addressed systematic discrepancies in spectroscopic parameter estimates by adopting recent results for Gaia EDR3 stars as a reference standard. Then, we used a density-based spatial clustering of applica

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27

Peng, Xiao-Long. "Preferential attachment network model with aging and initial attractiveness." Communications in Theoretical Physics 74, no. 3 (2022): 035603. http://dx.doi.org/10.1088/1572-9494/ac5322.

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Abstract In this paper, we generalize the growing network model with preferential attachment for new links to simultaneously include aging and initial attractiveness of nodes. The network evolves with the addition of a new node per unit time, and each new node has m new links that with probability Π i are connected to nodes i already present in the network. In our model, the preferential attachment probability Π i is proportional not only to k i + A, the sum of the old node i's degree k i and its initial attractiveness A, but also to the aging factor τ i − α , where τ i is the age of the old n

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28

Journal, Baghdad Science. "Study the Characteristic of the Coupling Parameter ( ? ) in Dusty Plasma by Computer modeling." Baghdad Science Journal 7, no. 1 (2010): 98–104. http://dx.doi.org/10.21123/bsj.7.1.98-104.

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Computer modeling has been used to investing the Coulomb coupling parameter ?. The effects of the structure parameter K, grain charge Z, plasma density N, temperature dust grain Td, on the Coulomb coupling parameter had been studied. It was seen that the ? was increasing with increasing Z and N, and decrease with increasing K and T. Also the critical value of ? that the phase transfer of the plasma state from liquid to solid was studied.

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29

CORRADINI, MARIA G., and MICHA PELEG. "Demonstration of the Applicability of the Weibull–Log-Logistic Survival Model to the Isothermal and Nonisothermal Inactivation of Escherichia coli K-12 MG1655†." Journal of Food Protection 67, no. 11 (2004): 2617–21. http://dx.doi.org/10.4315/0362-028x-67.11.2617.

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Published isothermal semilogarithmic survival curves of Escherichia coli K-12 MG1655, in the range of 49.8 to 60.6°C, all had noticeable downward concavity. They could be described by the model log S(t) = −b(T)tn, where S(t) = N(t)/N0, N(t) and N0 being the momentary and initial number of organisms, respectively; b(T) is a temperature-dependent rate parameter; and n is a constant found to be about 1.5. The temperature dependence of b(T) could be described by the log-logistic model, b(T) = ln{1 + exp[k(T − Tc)]}, which had an almost perfect fit, with k = 0.88°C−1 and Tc = 60.5°C. The constants,

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30

Schurz, Henri, Taniya Chandrasena, and Shanika Chandrasena. "Analysis of stochastic SEIR(S) models with random total populations and variable diffusion rates." Electronic Journal of Qualitative Theory of Differential Equations, no. 55 (2024): 1–26. http://dx.doi.org/10.14232/ejqtde.2024.1.55.

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A stochastic SEIR(S) model with random total population, overall saturation constant K > 0 and general, local Lipschitz-continuous diffusion rates is presented. We prove the existence of unique, Markovian, continuous time solutions w.r.t. filtered, complete probability spaces on certain, bounded 4D prisms. The total population N ( t ) is governed by kind of stochastic logistic equations, which allows to have an asymptotically stable maximum population constant K > 0 . Under natural conditions on our SEIR(S) model, we establish asymptotic stochastic and moment stability of the disease-fre

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31

Магомедов, Рамазан Абдуллаевич, and Энвер Нариманович Ахмедов. "WATER VAPOR P-p-T PROPERTIES CALCULATION IN THE TEMPERATURE RANGE FROM 773 K TO 1673 K." Physical and Chemical Aspects of the Study of Clusters, Nanostructures and Nanomaterials, no. 14 (December 15, 2022): 298–306. http://dx.doi.org/10.26456/pcascnn/2022.14.298.

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В работе представлен расчёт изотерм уравнения состояния водяного пара в диапазоне температур от Т = 773 K до Т = 1673 K. Расчёт произведён с помощью специально разработанного программного модуля «Fract EOS». Предложен подход повышающий точность расчётов ранее описной методики. Если имеются табличные данные соотношения P-V-T (P-p-T) для нескольких температур и полученные по ним зависимости показателя производной дробного порядка ) (который является подгоночным), то можно с помощью интерполяции по температуре для нескольких значений плотности получить зависимость для температуры внутри диапазона

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32

Cui, Guo Min, Jin Yang Wang, Tao Jiang, and Xiang Bai Hu. "Transfer Behavior of Heat Exchanger." Advanced Materials Research 233-235 (May 2011): 1281–87. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.1281.

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This study deals with the transient response of heat exchanger which is approximated to the first-order system with delay. This function is of simple form and easy to be applied to design the practical controllers. The parameters such as gain K, time constant T and delay time are derived in this paper. On the basis of using the first-order system as the transfer function for a heat exchanger, more accurate models are built to derive the parameters K, T and respectively, which are constructed with a lumped parameter approach. Unlike a number of recent analyses K is obtained by using arithmetic

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33

Zhou, Fei, Feng-Dong Jia, Jiong Mei, et al. "The effect of the Doppler mismatch in microwave electrometry using Rydberg electromagnetically induced transparency and Autler–Townes splitting." Journal of Physics B: Atomic, Molecular and Optical Physics 55, no. 7 (2022): 075501. http://dx.doi.org/10.1088/1361-6455/ac5d8d.

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Abstract We have systematically investigated the influence of the gas temperature (T), the Rabi frequencies of the probe laser (Ωp), the coupling laser (Ωc) and the radio-frequency (RF) (ΩRF) on the Rydberg electromagnetically induced transparency (EIT) and Autler–Townes (AT) splitting (Δf) by defining a general Doppler mismatch factor D g = ΩRF/Δf in the Rydberg atom-based microwave electrometry. The effect of T on D g is studied in detail from 0 to 1000 K, the results show that D g is insensitive to T when T < 10 μK or T > 10 K, while D g changes significantly with 10 K \,T > 10\ens

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34

Giuliano, Gillo, and Wilma Polini. "Characterization of the Superplastic Magnesium Alloy AZ31 through Free-Forming Tests and Inverse Analysis." Applied Sciences 13, no. 4 (2023): 2730. http://dx.doi.org/10.3390/app13042730.

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This work proposes a simple procedure to characterize 1.0 mm thick sheets of superplastic magnesium alloy AZ31. The simplest mathematical function that models the behavior of a superplastic material is a power law between stress and strain rate with two parameters connected to the material: K and m. First, the parameter m (variable with the strain) was defined directly by carrying out free-forming experimental tests at constant pressure and using a simple expression taken from the analytical modeling of the free-forming process. In the second step, an inverse analysis was carried out through a

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35

SINGH, K. P., V. P. S. AWANA, MD SHAHABUDDIN, et al. "PHASE FORMATION AND SUPERCONDUCTIVITY OF Fe-TUBE ENCAPSULATED AND VACUUM-ANNEALED MgB2." Modern Physics Letters B 20, no. 27 (2006): 1763–69. http://dx.doi.org/10.1142/s0217984906011840.

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We report optimization of the synthesis parameters viz. heating temperature (TH), and hold time (t hold ) for vacuum-annealed (10-5 Torr) and LN 2 (liquid nitrogen) quenched MgB 2 compound. These are single-phase compounds crystallizing in the hexagonal structure (space group P 6/mmm ) at room temperature. Our XRD results indicated that for phase-pure MgB 2, the TH for 10-5 Torr annealed and LN 2-quenched samples is 750°C. The right stoichiometry i.e., MgB 2 of the compound corresponding to 10-5 Torr and TH of 750°C is found for the hold time (t hold ) of 2.30 hours. With varying t hold from 1

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Li, Chen, Hiroyuki Okamura, and Tadashi Dohi. "Parameter Estimation of $M_{t}/M/1/K$ Queueing Systems With Utilization Data." IEEE Access 7 (2019): 42664–71. http://dx.doi.org/10.1109/access.2019.2906796.

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Ceci, S., A. Švarc, B. Zauner, D. M. Manley, and S. Capstick. "Model-independent resonance parameter extraction from the trace of K and T matrices." Physics Letters B 659, no. 1-2 (2008): 228–33. http://dx.doi.org/10.1016/j.physletb.2007.11.003.

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Sun, Jian Dong, Jun Li Lv, Tao Du, and Yang Xian Li. "Numerical Modeling and Parametric Analysis of Multiplanar CHS KT-Joints with K-Plane Overlap and Out-of-Plane Gap." Applied Mechanics and Materials 94-96 (September 2011): 575–82. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.575.

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A finite element model simulating the experiment on multiplanar unstiffened CHS KT joints with K-plane overlapped and out-of-plane not (KT-IPOv joints), with the background of Suzhou International Convention & Exhibition Center, was advanced and validated by comparing failure mode and the ultimate capacity with experimental results, which is shown to be in good agreement with the test result. Using this model, the effect of non-dimensional parameters on ultimate capacity of KT-IPOv joints were studied, and resistance comparison between multiplanar KT-IPOv joints and uniplanar overlapped K-

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39

Huzak, Miljenko, Snježana Lubura Strunjak, and Andreja Vlahek vStrok. "An approximate maximum likelihood estimator of drift parameters in a multidimensional diffusion model." Glasnik Matematicki 59, no. 1 (2024): 213–58. http://dx.doi.org/10.3336/gm.59.1.10.

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For a fixed \(T\) and \(k \geq 2\), a \(k\)-dimensional vector stochastic differential equation \(dX_t=\mu(X_t, \theta)\,dt+\nu(X_t)\,dW_t,\) is studied over a time interval \([0,T]\). Vector of drift parameters \(\theta\) is unknown. The dependence in \(\theta\) is in general nonlinear. We prove that the difference between approximate maximum likelihood estimator of the drift parameter \(\overline{\theta}_n\equiv \overline{\theta}_{n,T}\) obtained from discrete observations \((X_{i\Delta_n}, 0 \leq i \leq n)\) and maximum likelihood estimator \(\hat{\theta}\equiv \hat{\theta}_T\) obtained fro

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40

McMullan, R. K., S. Ghose, N. Haga, and V. Schomaker. "Sodalite, Na4Si3Al3O12Cl: structure and ionic mobility at high temperatures by neutron diffraction." Acta Crystallographica Section B Structural Science 52, no. 4 (1996): 616–27. http://dx.doi.org/10.1107/s0108768196004132.

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Crystal data: Na4Si3Al3O12Cl, cubic, space group P43n, Z = 2, F(000) = 233.06 fm, μ n = 0.06 cm−1, lattice parameter ao (Å) [T] (K) at eight temperatures: 8.882 (1) [295]; 8.902 (2) [500]; 8.912 (1) [600]; 8.923 (1) [700] 8.951 (2) [800]; 8.971(1) [900]; 8.988 (1) [1000]; 9.037 (1) [1200]. The crystal structure has been determined at six temperatures (295 ≤ T ≤ 1200 K) based on neutron diffraction data with (sin θ/λ) < 0.80 Å−1. Besides conventional parameters, the least-squares refinement model included thermal tensor parameters up to fourth-order for sodium and chlorine (295 ≤ T ≤ 1200 K)

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Y, Gololobov, Borovoy N, and Nikolaienko A. "THE FEATURES OF STRUCTURE PARAMETERS CHANGES Ag3AsS3 SEMICONDUCTOR." National Transport University Bulletin 1, no. 46 (2020): 73–82. http://dx.doi.org/10.33744/2308-6645-2020-1-46-073-082.

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Influence of temperature and optical irradiation is investigated on the parameters of elementary cell and linear coefficients of thermal expansion of Ag3AsS3 proustite crystals. Object of the study - single-crystals of compounds - semiconductor Ag3AsS3. Purpose of the study - to determine an elementary cell parameters change features of Ag3AsS3crystals in the interval of temperatures of T= 120-300 К with presence of optical irradiation. Method of the study - X-rays metod. Temperature dependences of the elementary cell parameters and also linear coefficients of thermal expansion of crystals of

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42

Zhu, Qiao-Na, Qiang Wang, Yan-Biao Hu, and Xawkat Abliz. "Practical Determination of the Solubility Parameters of 1-Alkyl-3-methylimidazolium Bromide ([CnC1im]Br, n = 5, 6, 7, 8) Ionic Liquids by Inverse Gas Chromatography and the Hansen Solubility Parameter." Molecules 24, no. 7 (2019): 1346. http://dx.doi.org/10.3390/molecules24071346.

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The physicochemical properties of four 1-alkyl-3-methylimidazolium bromide ([CnC1im]Br, n = 5, 6, 7, 8) ionic liquids (ILs) were investigated in this work by using inverse gas chromatography (IGC) from 303.15 K to 343.15 K. Twenty-eight organic solvents were used to obtain the physicochemical properties between each IL and solvent via the IGC method, including the specific retention volume and the Flory–Huggins interaction parameter. The Hildebrand solubility parameters of the four [CnC1im]Br ILs were determined by linear extrapolation to be δ 2 ( [ C 5 C 1 im ] Br ) = 25.78 (J·cm−3)0.5, δ 2 (

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43

BARTOS, A., D. WIARDA, Z. INGLOT, K. P. LIEB, M. UHRMACHER, and T. WENZEL. "MAGNETIC PHASE TRANSITIONS IN TRANSITIONAL METAL OXIDES STUDIED WITH PERTURBED ANGULAR CORRELATIONS." International Journal of Modern Physics B 07, no. 01n03 (1993): 357–60. http://dx.doi.org/10.1142/s0217979293000755.

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The Perturbed Angular Correlation (PAC) method with radioactive tracer nuclei is well-suited to study the critical behaviour of magnetic hyperfine fields. Here we present the results of PAC measurements with 111 Cd probes, concerning the antiferromagnetic phase transitions in CuO, Co 3 O 4 and MnO. The measured Larmor frequencies were fitted with a Curie-Weiss type temperature dependence ωL (T) /ωL(0) = (1- T/T N)β. In CuO the PAC probe is subject to a high electric field gradient (efg) with the coupling constant νQ = 434(2) MHz and the asymmetry parameter η = 0.42(1). Therefore, combined elec

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44

Medak, B., and A. A. Tret’yakov. "ON THE APPLICATION OF THE SOLUTION OF THE DEGENERATE NONLINEAR BURGERS EQUATION WITH A SMALL PARAMETER AND THE THEORY OF <i>p</i>-REGULARITY." Доклады Российской академии наук. Математика, информатика, процессы управления 512, no. 1 (2023): 5–9. http://dx.doi.org/10.31857/s2686954323700236.

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The article discusses various modifications of the nonlinear Burgers equation with small parameter and degenerate in solution of the form\(F(u,\varepsilon ) = {{u}_{t}} - {{u}_{{xx}}} + u{{u}_{x}} + \varepsilon {{u}^{2}} - f(x,t) = 0,\) (1)where \(F:\Omega \to C([0,\pi ] \times [0,T])\), \(T 0\), \(\Omega = {{C}^{2}}([0,\pi ] \times [0,T]\,)\,\mathbb{R}\) and \(u(0,t) = u(\pi ,t) = 0\), \(u(x,0) = \varphi (x)\), \(f(x,t) \in C([0,\pi ] \times [0,T])\), \(\varphi (x) \in C[0,\pi ]\). We will be interested in the most important in applications case of a small parameter ε with oscillating initial

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45

TOYOKI, HIROYASU. "PHASE ORDERING SIMULATION OF VECTOR ORDER-PARAMETERS WITHOUT SINGULAR DEFECTS." Modern Physics Letters B 07, no. 06 (1993): 397–403. http://dx.doi.org/10.1142/s0217984993000394.

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Cell dynamical study of phase ordering dynamics is presented for vector order-parameter systems without singular defects. The structure factor satisfies the scaling relation; S (k, t) = l (t)2 g(kl(t)), whose tail at kl ≫ 1 is characterized by a single power as g (x) ~ x −χ. The exponent χ is larger than an analytical value χ = d + n where n and d are the dimensionality of order-parameter and space respectively. The characteristic length varies as l (t) ~ t0.5 for n ≥ 4 while the growth for n = 3 is slower than that.

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Razavi, F. S., Y. Rohanizadegan, M. Hajialamdari, M. Reedyk, R. K. Kremer, and B. Mitrović. "The effect of quasiparticle self-energy on Cd2Re2O7 superconductor." Canadian Journal of Physics 93, no. 12 (2015): 1646–50. http://dx.doi.org/10.1139/cjp-2015-0173.

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The magnitude and the temperature dependence of the superconducting order parameter Δ(T) of single crystals of Cd2Re2O7 (Tc = 1.02 K) was measured using point-contact spectroscopy. To fit the conductance spectra and to extract the order parameter at different temperatures we generalized the Blonder–Tinkham–Klapwijk theory by including the self-energy of the quasiparticles into the Bogoliubov equations. This modification enabled excellent fits of the conductance spectra. Δ(T) increases steeply below the superconducting transition temperature of 1.02 K and levels off below ∼0.8 K at a value of 0

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47

Baryl’nik, A. S., V. M. Dmitriev, D. A. Dikin, et al. "Peculiarities in the properties of ceramic Bi (Tl)–Sr (Ba)–Ca–Cu–O." Soviet Journal of Low Temperature Physics 15, no. 9 (1989): 514–17. https://doi.org/10.1063/10.0032244.

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The phase composition, phase structure, lattice parameters, thermal expansion coefficients, magnetic susceptibility, and electric resistivity of Bi and Tl ceramics were measured at temperatures between 5 and 293 K. The 2212 phase revealed an instability which was manifested in the relaxation of structural and thermodynamic characteristics induced by redistribution and ordering of oxygen atoms. Thermal expansion anisotropy may be observed in the basal plane of the 2212 phase of the Bi ceramic. The Tl ceramic is found to contain a new pseudotetragonal phase 2245 with the parameter c = 48.2 Å. Ac

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48

Choi, Jae. "Conditional wiener integral associated with Gaussian processes and applications." Filomat 37, no. 26 (2023): 8791–811. http://dx.doi.org/10.2298/fil2326791c.

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Let C0[0,T] denote the one-parameter Wiener space and let C?0[0,T] be the Cameron-Martin space in C0[0,T]. Given a function k in C?0[0,T], define a stochastic process Zk : C0[0,T] ? [0, T] ? R by Zk(x, t) = R t 0 Dk(s)dx(s), where Dk ? d/dt k. Let a random vector XG,k : C0[0,T] ? Rn be given by XG,k(x) = ((g1,Zk(x,?))~,..., (gn,Zk(x,?))~), where G = {g1, ..., gn} is an orthonormal set with respect to the weighted inner product induced by the function k on the space C?0[0,T], and (g,Zk(x,?))~ denotes the Paley-Wiener-Zygmund stochastic integral. In this paper, using the reproducing kernel prope

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Zhang, Xuemei. "Parameter Dependence of Positive Solutions for Second-Order Singular Neumann Boundary Value Problems with Impulsive Effects." Abstract and Applied Analysis 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/968792.

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The author considers the Neumann boundary value problem-y′′t+Myt=λωtft,yt, t∈J, t≠tk, -Δy′|t=tk=λIktk,ytk, k=1,2,…,m, y′(0)=y′(1)=0and establishes the dependence results of the solution on the parameterλ, which cover equations without impulsive effects and are compared with some recent results by Nieto and O’Regan.

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TABUCHI, Toshiaki, Takashi SOEDA, Terushige KAWATA, and Mitsuru SOEDA. "Parameter Estimation of ARMA Process by Taking into Consideration of ^|^part;kx(t)/^|^part;^|^alpha;T^|^middot;^|^epsilon;(t)." Transactions of the Society of Instrument and Control Engineers 24, no. 4 (1988): 357–62. http://dx.doi.org/10.9746/sicetr1965.24.357.

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